CN213502725U - Bicycle with a wheel - Google Patents

Abstract

The embodiment of the disclosure belongs to the technical field of bicycles, and particularly relates to a bicycle. The embodiment of the disclosure aims to solve the problems that the distance between the second supporting rod and the ground is large, the center of gravity of a bicycle is high, and the safety is insufficient in the related art. In the bicycle of the embodiment of the disclosure, the front fork is arranged at the front end of the first supporting rod, and the front wheel is arranged at the bottom end of the front fork; the rear end of the first supporting rod is connected with the bottom end of the second supporting rod and the front end of the rear fork through a five-way joint, and the five-way joint is provided with a shaft hole; the rear fork extends in a direction back to the front fork, the rear wheel is arranged on the rear fork, the axes of the rear wheel and the front wheel are positioned in the same preset horizontal plane, the shaft hole is positioned at the lower part of the preset horizontal plane, and the distance between the center line of the shaft hole and the preset horizontal plane is less than or equal to 10 mm; reduce the five-way and the distance between the ground, and then reduce the distance between second bracing piece and the ground, reduced the focus of bicycle, improved the security of bicycle.

Description

Bicycle with a wheel

Technical Field

The embodiment of the disclosure relates to the technical field of bicycles, in particular to a bicycle.

Background

In the related art, a bicycle comprises a frame, a handlebar and a saddle, wherein the frame comprises a first supporting rod, a second supporting rod, a front fork and a rear fork, the front fork is arranged at the front end of the first supporting rod and is rotatably connected with the first supporting rod, a front wheel is arranged on the front fork, and the handlebar is connected with the front fork; the rear end of the first supporting rod is connected with the bottom end of the second supporting rod through a five-way joint, and the saddle is arranged at the top end of the second supporting rod; the front end of the rear fork is connected with the five-way joint, and the rear wheel is arranged at the rear end of the rear fork; the five-way is provided with a shaft hole, the bicycle further comprises a pedal driving device, and a driving shaft of the pedal driving device penetrates through the shaft hole.

However, in the related art, the axle hole, the front wheel and the center line of the rear wheel are located in the same horizontal plane, so that the distance between the second support rod and the ground is large, the center of gravity of the bicycle is high, and the safety is insufficient.

SUMMERY OF THE UTILITY MODEL

The embodiment of the disclosure provides a bicycle, which is used for solving the problems that the distance between a second supporting rod and the ground is large, the center of gravity of the bicycle is high, and the safety is insufficient.

In one aspect, embodiments of the present disclosure provide a bicycle comprising: frame, front wheel, rear wheel and drive shaft, the frame includes first bracing piece, second bracing piece, front fork and back fork, the rotatable setting of front fork is in the front end of first bracing piece, the front wheel sets up on the bottom of front fork.

The rear end of the first supporting rod is connected with the bottom end of the second supporting rod and the rear fork through a five-way joint, the five-way joint is provided with a shaft hole, and the driving shaft penetrates through the shaft hole; the back vent is to keeping away from the direction of front fork extends, the back wheel sets up on the back vent, the back wheel with the axis of front wheel is located same preset horizontal plane, the shaft hole is located the lower part of preset horizontal plane, just the central line in shaft hole with distance between the preset horizontal plane is less than or equal to 10 mm.

Through the arrangement, compared with the plane where the central line of the shaft hole is located on the axis of the front wheel and the axis of the rear wheel, the distance between the five-way valve and the ground can be reduced, the distance between the second supporting rod and the ground is further reduced, the center of gravity of the bicycle is reduced, and the safety of the bicycle is improved.

In some embodiments, which may include the above-mentioned embodiments, the second support rod extends upward, a top end of the second support rod is provided with a saddle, and the second support rod is disposed obliquely with respect to the preset horizontal plane such that a bottom end of the second support rod is disposed closer to the front wheel than a top end of the second support rod.

So set up, the elastic deformation can take place on the road surface of jolting to the second bracing piece that the slope set up to absorb the impact force to the saddle, and then play absorbing effect, improve user experience.

In some embodiments, which may include the above embodiments, the second support bar has a smaller first included angle of 69-72 ° with respect to the predetermined horizontal plane.

So set up, when making the frame have better shock attenuation effect, avoid the relative and the too big horizontal plane inclination of predetermineeing of second bracing piece.

In some embodiments, which may include the above embodiments, a distance between the top end of the second support bar and the centerline of the shaft aperture is 405 mm to 415 mm.

So set up, avoid setting up the saddle height on second bracing piece top too high, and then avoid user's when riding high too high, improved the security of bicycle.

In some embodiments, which may include the above embodiments, the distance of the saddle from the axis of the front fork in the horizontal plane is from 530 mm to 570 mm.

So set up, be convenient for take the user on the saddle and hold the handlebar of setting on the front fork to the user controls, has improved user experience.

In some embodiments, which may include the above embodiments, the distance between the axis of the front wheel and the axis of the rear wheel in the preset horizontal plane is from 985 mm to 1040 mm.

So set up, when the bicycle has higher stationarity for the turning radius of bicycle is unlikely to too big, and the bicycle also has better flexibility of controlling.

In some embodiments, which may include the above embodiments, the distance in the horizontal plane between the axis of the front wheel and the centerline of the axle bore is 580 mm to 620 mm.

So set up, can make the distance of five-way to rear wheel be less than the distance of five-way to front wheel, when riding, user's gravity mainly exerts on the rear wheel, and then has improved the nature controlled of bicycle.

In some embodiments, which may include the above embodiments, the axis of the front fork is disposed obliquely to the predetermined horizontal plane such that the bottom end of the front fork is disposed farther from the rear wheel than the top end of the front fork.

So set up, can have great distance between the axis of front wheel and the axis of rear wheel, improved the stability of bicycle.

In some embodiments, which may include the above embodiments, the second, lesser included angle between the axis of the front fork and the predetermined horizontal plane is 68-71 °.

So set up, have under the prerequisite of better stationarity at the bicycle for the turn of bicycle is more nimble, has improved the nature controlled of bicycle.

In some embodiments, which may include the above-mentioned embodiments, the front fork is curved in a direction away from the rear wheel such that a distance between an intersection point between an axis of the front fork and the preset horizontal plane and an axis of the front wheel is 40 mm to 45 mm.

So set up, can further increase the distance between the axis of front wheel and the axis of rear wheel, further improve the stability of bicycle.

In the bicycle provided by the embodiment of the disclosure, the front fork is rotatably arranged at the front end of the first supporting rod, and the front wheel is rotatably arranged at the bottom end of the front fork; the rear end of the first supporting rod is connected with the bottom end of the second supporting rod and the front end of the rear fork through a five-way joint, the five-way joint is provided with a shaft hole, and the driving shaft penetrates through the shaft hole; the rear fork extends in a direction back to the front fork, the rear wheel is arranged on the rear fork, the axes of the rear wheel and the front wheel are positioned in the same preset horizontal plane, the shaft hole is positioned at the lower part of the preset horizontal plane, and the distance between the center line of the shaft hole and the preset horizontal plane is less than or equal to 10 mm; compare in the plane that the axis that lies in the axis of front wheel and the axis of rear wheel with the central line in shaft hole belongs to, can reduce the distance between five-way and the ground, and then reduce the distance between second bracing piece and the ground, reduced the focus of bicycle, improved the security of bicycle.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

Fig. 1 is a schematic structural view of a bicycle provided in an embodiment of the present disclosure.

Description of reference numerals:

10: a first support bar;

20: a second support bar;

30: a rear fork;

40: a front fork;

50: a handlebar;

60: a saddle;

70: a rear wheel;

80: a front wheel;

90: five-way connection;

a: a first included angle;

b: a second included angle;

a: a first distance;

b: a second distance;

c: a third distance;

d: a fourth distance;

e: a fifth distance;

f: a sixth distance;

g: a seventh distance.

With the foregoing drawings in mind, certain embodiments of the disclosure have been shown and described in more detail below. These drawings and written description are not intended to limit the scope of the disclosed concepts in any way, but rather to illustrate the concepts of the disclosure to those skilled in the art by reference to specific embodiments.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be described clearly and completely with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are some, but not all embodiments of the present disclosure. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.

The bicycle comprises a frame, a handlebar and a saddle, wherein the frame comprises a first supporting rod, a second supporting rod, a front fork and a rear fork, the front fork is arranged at the front end of the first supporting rod and is rotatably connected with the first supporting rod, the bottom end of the front fork is provided with a front wheel, and the handlebar is connected with the top end of the front fork; the rear end of the first supporting rod is connected with the bottom end of the second supporting rod through a five-way joint, and the saddle is arranged at the top end of the second supporting rod; the front end of the rear fork is connected with the five-way joint, and the rear wheel is arranged at the rear end of the rear fork; the five-way is provided with a shaft hole, the bicycle further comprises a pedal driving device, and a driving shaft of the pedal driving device penetrates through the shaft hole.

However, in the related art, the center line of the axle hole, the axis of the front wheel and the axis of the rear wheel are located in the same horizontal plane, so that the distance between the second support rod and the ground is large, the center of gravity of the bicycle is high, and the safety is insufficient.

The embodiment of the disclosure provides a bicycle, the axis that makes the front wheel is located same horizontal plane with the axis of rear wheel, and the shaft hole setting is in the lower part of this horizontal plane, and has certain distance between with this horizontal plane, has reduced the distance between second bracing piece bottom to the ground, and then has reduced the focus of bicycle, has improved the security.

Referring to fig. 1, the bicycle of the present embodiment includes a frame, and a front wheel 80 and a rear wheel 70 mounted on the frame. Wherein the frame includes first bracing piece 10, second bracing piece 20, front fork 40 and back vent 30, and the front end of first bracing piece 10 is provided with the sleeve pipe, and the top of front fork 40 is provided with the axis of rotation, and the axis of rotation is worn to establish in the sleeve pipe to realize the rotatable coupling between front fork 40 and the first bracing piece 10. Further, a bearing may be provided between the rotating shaft and the sleeve to reduce resistance to rotation of the front fork 40 and improve the controllability of the bicycle.

The front wheel 80 has a rotatable front axle removably connected to the bottom end of the front fork 40 to rotatably connect the front wheel 80 to the front fork 40. The axis of the front wheel 80 is collinear with the axis of the front axle and all parallel to the horizontal plane.

Further, the bicycle further includes a handle bar 50, the handle bar 50 is connected to the rotating shaft, and a user can rotate the handle bar 50 to drive the front fork 40 to rotate, thereby adjusting the traveling direction of the bicycle.

In the above implementation, the bottom end of the second support rod 20 is connected to the rear end of the first support rod 10 and the front end of the rear fork 30 through the five-way joint 90, for example, the five-way joint 90 may be connected to the first support rod 10, the second support rod 20 and the rear fork 30 through welding, or the five-way joint 90 is connected to the first support rod 10, the second support rod 20 and the rear fork 30 through bolts, and of course, the five-way joint 90 may also be integrated with the first support rod 10, the second support rod 20 and the rear fork 30.

The top end of the second support bar 20 is provided with a saddle 60, and the user rides on the saddle 60 while riding. The rear fork 30 extends rearward, and the rear end of the rear fork 30 is connected to the rear wheel 70; illustratively, a rotatable rear axle is provided on the rear wheel 70, and the rear axle is detachably connected to the rear end of the rear fork 30 to rotatably connect the rear wheel 70 to the rear fork 30. The axis of the rear wheel 70 is collinear with the axis of the rear axle, the axis of the rear axle is parallel to the horizontal plane, and the axis of the rear wheel 70 is parallel to the axis of the front wheel 80 and is located in the same preset horizontal plane.

In this embodiment, the bicycle further comprises a pedal driving device, wherein the pedal driving device comprises a driving shaft, a driving arm and a pedal; the five-way 90 is provided with a shaft hole, the center line of the shaft hole is parallel to the center line of the front wheel 80, and the driving shaft is rotatably arranged in the shaft hole; the driving arms comprise a first driving arm and a second driving arm, the first driving arm is connected with one end of the driving shaft, the second driving arm is connected with the other end of the driving shaft, one end of each driving arm, which is far away from the driving shaft, can be rotatably provided with a pedal, and the driving shaft is in transmission connection with the rear wheel 70; when riding, the user drives the driving shaft to rotate by pedaling the two pedals, and then drives the rear wheel 70 to rotate, so as to provide power for the bicycle to run.

Illustratively, a driving sprocket may be provided on the driving shaft, and a driven sprocket may be provided on the rear wheel 70, and a chain is engaged between the driving sprocket and the driven sprocket to rotate the rear wheel 70 via the driving sprocket, the driven sprocket and the chain when the driving shaft rotates. Of course, the pedal driving device may further include a transmission shaft, one end of the rotation shaft is provided with a first gear, the other end of the transmission shaft is provided with a second gear, a driving gear is correspondingly provided on the driving shaft, a driven gear is provided on the rear wheel 70, the first gear is engaged with the driving gear, the second gear is engaged with the driven gear, and the connection between the driving shaft and the rear wheel 70 can also be realized.

In this embodiment, the shaft hole of the five-way joint 90 is located at the lower part of the preset horizontal plane, that is, the center line of the shaft hole is located at the lower part of the preset horizontal plane, so that the distance between the second support rod 20 connected with the five-way joint 90 and the ground is reduced; when the user sits on the saddle 60 at the top end of the second support rod 20, the user's gravity acts on the second support rod 20, so that the center of gravity of the bicycle can be lowered, thereby improving the safety of the bicycle. Further, the first distance a between the center line of the shaft hole and the preset horizontal plane is smaller than or equal to 10 mm, so that the bicycle has better safety, and meanwhile, the distance between the five-way 90 and the ground is prevented from being too small, so that objects between the five-way 90 and the ground are prevented from being scraped and rubbed when the bicycle runs, and the bicycle has better trafficability.

In the bicycle provided by the embodiment, the front fork 40 is rotatably arranged at the front end of the first support rod 10, and the front wheel 80 is rotatably arranged at the bottom end of the front fork 40; the rear end of the first support rod 10 is connected with the bottom end of the second support rod 20 and the front end of the rear fork 30 through a five-way joint 90, a shaft hole is formed in the five-way joint 90, and a drive shaft penetrates through the shaft hole; the rear fork 30 extends in a direction departing from the front fork 40, the rear wheel 70 is arranged on the rear fork 30, the axes of the rear wheel 70 and the front wheel 80 are positioned in the same preset horizontal plane, the shaft hole is positioned at the lower part of the preset horizontal plane, and the distance between the central line of the shaft hole and the preset horizontal plane is less than or equal to 10 mm; compared with the plane where the central line of the shaft hole is located on the axis of the front wheel 80 and the axis of the rear wheel 70, the distance between the five-way joint 90 and the ground can be reduced, the distance between the second support rod 20 and the ground is further reduced, the center of gravity of the bicycle is lowered, and the safety of the bicycle is improved.

With continued reference to fig. 1, in implementations where the top end of the second support rod 20 is provided with a saddle 60, the second support rod 20 is disposed at an incline relative to a predetermined horizontal plane such that the bottom end of the second support rod 20 is disposed closer to the front wheel 80 than the top end of the second support rod 20. The second bracing piece 20 that the slope set up can take place elastic deformation on the road surface of jolting to absorb the impact force to saddle 60, and then play absorbing effect, improve user experience.

Furthermore, the smaller first included angle A in the included angles between the second support rod 20 and the preset horizontal plane is 69-72 degrees, so that the second support rod 20 is prevented from being too large in inclination angle relative to the preset horizontal plane while the frame has a good damping effect.

It should be noted that two included angles are formed between the second supporting rod 20 and the preset horizontal plane, and the two included angles are complementary angles; the first included angle a is the smaller of the two included angles.

In the above implementation manner, the second distance b between the top end of the second support rod 20 and the central line of the shaft hole is 405 mm to 415 mm. So set up, avoid setting up saddle 60 on second bracing piece 20 top highly too high, and then avoid user's when riding highly too high, improved the security of bicycle.

With continued reference to fig. 1, in the present embodiment, the third distance c between the saddle 60 and the axis of the front fork 40 in the horizontal plane is 530 mm to 570 mm. So configured, a user sitting on saddle 60 can conveniently grip handlebar 50 provided on front fork 40, so as to facilitate user operation and improve user experience.

Illustratively, the saddle 60 may include a seat body and a saddle tube connected between a top end of the saddle tube and the seat body, and the third distance c may be a distance between the top end of the saddle tube and an axis of the front fork 40 in a horizontal plane.

In some embodiments, the top end of the second support rod 20 has an inwardly extending adjustment hole, a portion of the saddle tube is inserted into the adjustment hole, and the saddle tube is connected to the second support rod 20 by an adjustment device that locks the saddle tube after the saddle tube protrudes from the adjustment hole, thereby preventing the saddle tube from sliding in the adjustment hole to allow for adjustment of the height of the saddle 60. In this case, the third distance c may be a distance in a horizontal plane between the saddle 60 and the axis of the front fork 40 when the saddle pipe is extended to the limit from the inside of the adjustment hole (the saddle 60 is adjusted to the highest height), or may be a distance in a horizontal plane between the saddle 60 and the axis of the front fork 40 when the saddle pipe is retracted to the limit into the adjustment hole (the saddle 60 is adjusted to the lowest height).

In an implementable manner, the height of saddle 60 at which the user has used the most number of times can be obtained, taking as the third distance c the distance in the horizontal plane between saddle 60 and the axis of front fork 40 at this saddle 60 height, according to the average height of the user.

With continued reference to fig. 1, in the present embodiment, the fourth distance d between the axis of the front wheel 80 and the axis of the rear wheel 70 in the preset horizontal plane is 985 mm-1040 mm. The larger the fourth distance d is, the larger the turning radius of the bicycle is, and the more stable the bicycle runs; conversely, the smaller the fourth distance d, the smaller the turning radius of the bicycle (more flexible) and the poorer the smoothness. The fourth distance d is set to be 985 mm-1040 mm, so that the bicycle has higher stability, the turning radius of the bicycle is not too large, and the bicycle has better control flexibility.

With continued reference to fig. 1, further, the fifth distance e between the axis of the front wheel 80 and the centerline of the axle hole in the horizontal plane is 580 mm to 620 mm. So set up, can make distance that five-way 90 reaches rear wheel 70 be less than five-way 90 and reach the distance of front wheel 80, when riding, user's gravity mainly exerts on rear wheel 70, and then has improved the nature controlled of bicycle.

With continued reference to fig. 1, in the present embodiment, the axis of the front fork 40 is disposed obliquely to the preset horizontal plane such that the bottom end of the front fork 40 is disposed farther from the rear wheel 70 than the top end of the front fork 40; that is, the bottom end of the front fork 40 extends toward the front end of the bicycle. By such arrangement, a larger distance can be reserved between the axis of the front wheel 80 and the axis of the rear wheel 70, and the stability of the bicycle is improved.

Further, a second, smaller angle B between the axis of the front fork 40 and the predetermined horizontal plane is 68-71. So set up, have under the prerequisite of better stationarity at the bicycle for the turn of bicycle is more nimble, has improved the nature controlled of bicycle.

It should be noted that two included angles are formed between the axis of the front fork 40 and the predetermined plane, the two included angles are complementary angles, and the second included angle B is the smaller included angle of the two included angles.

With continued reference to fig. 1, further, the front fork 40 is bent in a direction away from the rear wheel 70, so that a sixth distance f from an intersection point between the axis of the front fork 40 and the preset horizontal plane to the axis of the front wheel 80 is 40 mm-45 mm. With this arrangement, the distance between the axis of the front wheel 80 and the axis of the rear wheel 70 can be further increased, and the stability of the bicycle can be further improved.

With continued reference to fig. 1, in the above implementation, when the bicycle travels on the ground, the intersection point of the axis of the front fork 40 and the ground is located in front of the vertical plane on which the axis of the front wheel 80 is located, and the seventh distance g from the axis of the front fork 40 to the vertical plane on which the axis of the front wheel 80 is located is 48 mm to 68 mm. By such arrangement, a larger distance can be reserved between the axis of the front wheel 80 and the axis of the rear wheel 70, and the stability of the bicycle is improved.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present disclosure, and not for limiting the same; while the present disclosure has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present disclosure.

Claims (10)

1. A bicycle, comprising: the frame comprises a first supporting rod, a second supporting rod, a front fork and a rear fork, the front fork is rotatably arranged at the front end of the first supporting rod, and the front wheel is arranged at the bottom end of the front fork;

the rear end of the first supporting rod is connected with the bottom end of the second supporting rod and the rear fork through a five-way joint, the five-way joint is provided with a shaft hole, and the driving shaft penetrates through the shaft hole; the back vent is to keeping away from the direction of front fork extends, the back wheel sets up on the back vent, the back wheel with the axis of front wheel is located same preset horizontal plane, the shaft hole is located the lower part of preset horizontal plane, just the central line in shaft hole with distance between the preset horizontal plane is less than or equal to 10 mm.

2. The bicycle of claim 1, wherein the second support rod extends upward, a saddle is disposed at a top end of the second support rod, and the second support rod is disposed at an angle with respect to the predetermined horizontal plane such that a bottom end of the second support rod is disposed closer to the front wheel than a top end of the second support rod.

3. The bicycle of claim 2, wherein the first, smaller angle between the second support bar and the predetermined horizontal plane is 69 ° -72 °.

4. The bicycle of claim 2 or 3, wherein the distance between the top end of the second strut and the centerline of the axle bore is in the range of 405 mm to 415 mm.

5. The cycle according to claim 2 or 3, wherein the distance of the saddle from the axis of the front fork in a horizontal plane is between 530 mm and 570 mm.

6. The cycle of claim 1, wherein the distance between the axis of the front wheel and the axis of the rear wheel in the preset horizontal plane is between 985 mm and 1040 mm.

7. The bicycle of claim 6, wherein the distance in a horizontal plane between the axis of the front wheel and the centerline of the axle bore is 580 mm-620 mm.

8. The bicycle of claim 1, wherein the axis of the front fork is disposed at an incline to the predetermined horizontal plane such that a bottom end of the front fork is disposed further from the rear wheel than a top end of the front fork.

9. The bicycle of claim 8, wherein the second, smaller angle between the axis of the front fork and the predetermined horizontal plane is 68-71 °.

10. The bicycle of claim 8 or 9, wherein the front fork is curved away from the rear wheel such that the distance between the intersection of the axis of the front fork and the predetermined horizontal plane and the axis of the front wheel is 40 mm to 45 mm.

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