Novel swing car

Abstract

The utility model relates to the technical field of bicycles, in particular to a novel swing bicycle, which comprises a frame, wheels, a driving wheel and a crankshaft, the wheels and the driving wheel are rotatably mounted on the frame, and the driving wheel is positioned above the center of the wheels and is in frictional contact with the wheels. The crankshaft is installed on the driving wheel and drives the driving wheel to rotate in a front-back swinging mode, and the rotating direction of the driving wheel is always opposite to the rotating direction of the wheel when the swing vehicle advances. In the whole riding process, the wheels are kept in a forward state all the time, riding is more coherent, the pedals and the crankshaft swing front and back, and the swing angle is smaller than 90 degrees, so that the movement amplitude of a rider is reduced, operation is more convenient, the physical ability of the rider is effectively distributed, the driving wheels are located above the wheels, a friction driving mode is adopted, and the driving efficiency is improved. Compared with the background technology, the height of the driving system is increased, the overall weight of the driving system is reduced, the swing car can be suitable for more wheels with small wheel diameters, the size of the swing car is smaller, and occupied space is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of bicycles, and in particular to a novel swing bicycle. Background Technology

[0002] Bicycles are widely used in various aspects of daily life as a means of transportation, entertainment, fitness, acrobatic performances, general sports, extreme sports, and competitions. Most bicycles use a two-wheeled tandem pedaling method to complete a full circle, while a few use a one-wheeled pedaling method. Two-wheeled tandem bicycles are mostly complex in structure and not convenient to fold.

[0003] Therefore, the applicant filed a Chinese utility model patent CN201211910Y in 2008 and was authorized in 2009, which disclosed a "dual-wheel crankshaft parallel bicycle". It adopts a special crankshaft structure to simplify the body structure and achieve the purpose of dual-wheel parallel operation.

[0004] Subsequently, in order to improve the convenience and safety of operation, the applicant filed a Chinese invention patent CN102152838B in 2011 and was authorized and announced in 2015, which disclosed a "dual-wheel crankshaft parallel swing vehicle", which uses a special gearbox structure to achieve the effect of crankshaft swinging back and forth to provide walking power.

[0005] The aforementioned "dual-wheel crankshaft parallel swing bike" is basically applicable to swing bikes with larger wheel sizes, such as wheel sizes of 24 inches and above. However, for smaller wheel sizes, such as wheel sizes of 18 inches, the crankshaft length may cause the pedals to come into contact with the ground or debris on the ground, making it impossible for the crankshaft to swing normally or making it inconvenient to swing.

[0006] Therefore, in order to enable the smooth application of crankshafts on smaller wheels and facilitate the rider's leg swing, the applicant continued to invest in research and development based on the original "dual-wheel crankshaft parallel swing bike" design, aiming to provide a new type of swing bike that can be adapted to the usage scenarios of smaller wheels. Utility Model Content

[0007] To accommodate smaller wheels, this invention provides a novel swing vehicle.

[0008] The novel swing vehicle provided by this utility model adopts the following technical solution:

[0009] A novel swing vehicle includes a frame, wheels, a drive wheel, and a crankshaft. The wheels and drive wheel are rotatably mounted on the frame. The drive wheel is located above the center of the wheel and in frictional contact with the wheel. The crankshaft is mounted on the drive wheel and drives the drive wheel to rotate by swinging back and forth. The rotation direction of the drive wheel is always opposite to the rotation direction of the wheels when the swing vehicle moves forward.

[0010] By adopting the above technical solution, the wheels remain in a forward-moving state throughout the entire riding process, making the ride more continuous. The pedals and crankshaft swing back and forth with an angle of less than 90°, which not only reduces the rider's range of motion and makes operation more convenient, but also effectively distributes the rider's energy. The drive wheel is located above the wheel and uses a friction drive method. Compared with existing technologies, this increases the height of the drive system and reduces the overall weight of the drive system. Although the drive structure is simplified, the drive performance is enhanced, the drive system is more durable, and it can be used with more small-diameter wheels. This swing vehicle is smaller in size, has a simplified structure, and reduces the occupation of social space, social resources, road space, and storage space. Compared with traditional unicycles, it solves the problems of difficulty in getting on the vehicle, high center of gravity when pedaling a full circle, and difficulty in maintaining balance, making it easier for riders to get on the vehicle and maintain balance.

[0011] Optionally, the drive wheel includes a wheel body with a receiving cavity inside. A crankshaft rotatably passes through the central axis of the wheel body. A rotating shaft is rotatably connected inside the wheel body and is parallel to one side of the crankshaft. A drive gear and a drive one-way bearing are fixedly mounted on the crankshaft, and a driven gear and a driven one-way bearing are fixedly mounted on the rotating shaft. The drive gear and the driven gear mesh and are both located within the receiving cavity. Both the drive one-way bearing and the driven one-way bearing are interference-fitted with the wheel body.

[0012] By adopting the above technical solution, when both feet push forward, the crankshaft swings forward, and the direction of the crankshaft's swing is the same as the direction the wheel wants to move forward, that is, the wheel can only move forward by rotating clockwise. At this time, the inner and outer rings of the driving one-way bearing are locked, and the driving gear drives the driven gear to rotate. The driven gear and the rotating shaft rotate simultaneously. At this time, the inner and outer rings of the driven one-way bearing separate. Due to the interference fit between the driving one-way bearing and the wheel body, the drive wheel rotates counterclockwise. Due to the frictional contact between the wheel and the drive wheel, the wheel rotates clockwise, and the entire swinging vehicle moves forward. When both feet push the pedals backward, the crankshaft swings backward, and the direction of the crankshaft's swing is the same as the direction the wheel wants to move forward. The direction of advance is opposite. At this time, the inner and outer rings of the driving one-way bearing separate. Since the driven gear meshes with the driving gear, the rotating shaft has a tendency to rotate in the opposite direction, causing the inner and outer rings of the driven one-way bearing to lock. Since the driven one-way bearing is interference-fitted with the wheel body, the driven gear can only make circular motion around the driving gear. Since the driven gear cannot rotate on its own, it can only drive the drive wheel to rotate counterclockwise. Since the wheel and the drive wheel are in frictional contact, the wheel rotates clockwise, and the entire oscillating car moves forward. Compared with the flywheel combination mechanism and the ratchet and pawl mechanism, the use of one-way bearings simplifies the structure of the bearing and one-way clutch combination and can be regarded as the optimal implementation method.

[0013] Optionally, the crankshaft includes a first shaft passing through the drive wheel, an axially telescopic second shaft vertically fixed to the end of the first shaft, and a third shaft for mounting pedals vertically fixed to the end of the second shaft away from the first shaft.

[0014] By adopting the above technical solution, the second axle can be extended and retracted axially, which can achieve the purpose of adjusting the length of the crankshaft to accommodate riders of different heights.

[0015] Optionally, the second shaft includes a mounting block for connecting the first shaft. A sleeve is fixed on the mounting block, and a sealing block is fixed at the end of the sleeve away from the mounting block. An extension rod that extends into the sleeve is slidably passed through the sealing block. One end of the extension rod is fixed to the third shaft, and a positioning nut is threaded onto the other end of the extension rod. A compression spring is also fitted on the extension rod, and the compression spring is elastically supported between the positioning nut and the sealing block.

[0016] By adopting the above technical solution, using an extension rod, positioning nut and compression spring structure, the crankshaft length can be adjusted, shock absorption can be achieved, and the pedals can be rotated and stored, so as to accommodate riders of different heights and swing bikes.

[0017] Optionally, the sleeve consists of multiple straight rods arranged in a circular pattern and parallel to each other, with one end of the straight rod fixed to the mounting block and the other end fixed to the sealing block.

[0018] By adopting the above technical solution, the installation and manufacturing of the sleeve are facilitated.

[0019] Optionally, the sleeve is a tubular structure, with the mounting block threaded onto one end of the sleeve and the sealing block threaded onto the other end of the sleeve.

[0020] By adopting the above technical solution, the mounting block and the sealing block are detachable, which facilitates the adjustment of the position of the positioning nut.

[0021] Optionally, end caps are provided at both ends of the wheel body, and the end caps are fixed to the wheel body by fixing bolts.

[0022] By adopting the above technical solution, it is convenient to protect the internal structure of the wheel body and assemble the drive wheel.

[0023] Optionally, a ratchet clutch can be installed inside the drive wheel, with a ratchet and pawl combination structure or a bearing, one-way clutch and gear combination structure, to cooperate with the crankshaft.

[0024] By adopting the above technical solutions, a ratchet clutch, a ratchet and pawl mating structure, or a bearing, one-way clutch, and gear mating structure can replace the one-way bearing and gear mating structure to achieve the same function.

[0025] Optionally, the frame includes a front fork, a seat post, and a connecting rod. The wheel is rotatably mounted on the front fork, the bottom end of the seat post is mounted on the wheel axle, the connecting rod is mounted between the seat post and the front fork and above the wheel, and the drive wheel is rotatably mounted on the connecting rod via a crankshaft.

[0026] By adopting the above technical solution, a frame design that is convenient for riding, and whose drive wheels and wheels are easy to assemble and fit together is provided, making it easy for mass production and use. Attached Figure Description

[0027] Figure 1 This is a structural schematic diagram of the novel swing vehicle according to an embodiment of the present utility model.

[0028] Figure 2 This is a schematic diagram of the crankshaft structure according to an embodiment of the present invention.

[0029] Figure 3 This is a cross-sectional view of the drive wheel according to an embodiment of the present invention.

[0030] Explanation of reference numerals in the attached drawings: 1. Frame; 10. Front fork; 11. Seat support; 12. Connecting rod; 2. Wheel; 3. Drive wheel; 30. Wheel body; 300. Receiving cavity; 31. End cap; 32. Fixing bolt; 33. Rotating shaft; 34. Drive gear; 35. Driven gear; 36. Driven one-way bearing; 37. Driven one-way bearing; 4. Crankshaft; 40. First shaft; 41. Second shaft; 410. Mounting block; 411. Sleeve; 412. Sealing block; 413. Extension rod; 414. Positioning nut; 415. Compression spring; 42. Third shaft; 5. Pedal. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1 -Appendix Figure 3 The present invention will be described in further detail below.

[0032] This utility model discloses a novel swing vehicle.

[0033] Reference Figure 1 and Figure 2 A novel swing bike includes a frame 1, a wheel 2, a drive wheel 3, a crankshaft 4, and a pedal 5. The frame 1 includes a front fork 10, a seat support 11, and a connecting rod 12. The wheel 2 is rotatably mounted on the front fork 10. The bottom end of the seat support 11 is mounted on the axle of the wheel 2. The connecting rod 12 is mounted between the front fork 10 and the seat support 11. There are two connecting rods 12 arranged in parallel and both are located directly above the wheel 2.

[0034] Reference Figures 1-3The drive wheel 3 is rotatably mounted between two connecting rods 12 and in frictional contact with the wheel 2. The rotation of the drive wheel 3 drives the wheel 2 to rotate, and the rotation direction of the drive wheel 3 is opposite to that of the wheel 2. The drive wheel 3 includes a wheel body 30, and the crankshaft 4 includes a first shaft 40 passing through the central axis of the wheel body 30 and rotatably passing through the connecting rods 12. The wheel body 30 has an internal receiving cavity 300, and end caps 31 are respectively provided at the left and right ends of the wheel body 30. The two end caps 31 are fixed to the wheel body 30 by fixing bolts 32.

[0035] Reference Figure 3 A rotating shaft 33 is rotatably connected between the two end caps 31 and the wheel body 30. The rotating shaft 33 is parallel to one side of the first shaft 40. A driving gear 34 is sleeved and fixed on the first shaft 40, and a driven gear 35 is sleeved and fixed on the rotating shaft 33. The driven gear 35 meshes with the driving gear 34. Both the driving gear 34 and the driven gear 35 are located in the receiving cavity 300.

[0036] Reference Figure 3 A drive one-way bearing 36 is installed on the first shaft 40. The inner ring of the drive one-way bearing 36 is interference-fitted with the first shaft 40, and the outer ring of the drive one-way bearing 36 is interference-fitted with the wheel body 30. A driven one-way bearing 37 is installed on the rotating shaft 33. The inner ring of the driven one-way bearing 37 is interference-fitted with the rotating shaft 33, and the outer ring of the driven one-way bearing 37 is interference-fitted with the wheel body 30.

[0037] Reference Figure 1 and Figure 2 The crankshaft 4 also includes a second shaft 41. There are two second shafts 41, which are respectively vertically fixed to both ends of the first shaft 40. In order to accommodate riders of different heights, the second shaft 41 is a telescopic rod structure. The end of the second shaft 41 away from the first shaft 40 is vertically fixed to a third shaft 42. The pedal 5 is rotatably mounted on the third shaft 42.

[0038] Reference Figure 2 The second shaft 41 includes a mounting block 410 that is detachably fixed to the end of the first shaft 40. A sleeve 411 consisting of three straight rods evenly arranged along the circumference is fixedly connected to the mounting block 410. A sealing block 412 is fixedly connected to the end of the sleeve 411 away from the mounting block 410. In other embodiments, if the sleeve 411 is a cylindrical structure, the mounting block 410 and the sealing block 412 can be fixed to the sleeve 411 by threaded installation.

[0039] Reference Figure 2An extension rod 413, which extends into the sleeve 411, slides along the central shaft of the sealing block 412. One end of the extension rod 413 is fixed to the third axle 42, and the other end of the extension rod 413 is provided with an external thread. Two positioning nuts 414 are threadedly installed on the end of the extension rod 413 near the mounting block 410. A compression spring 415 is also sleeved on the extension rod 413. The compression spring 415 is elastically supported between the positioning nuts 414 and the sealing block 412. By adjusting the position of the positioning nuts 414 on the extension rod 413, the overall length of the second axle 41 can be changed to accommodate riders of different heights. If storage is required, the pedal 5 can be rotated 180° along the extension rod 413 to face the inside of the frame 1 to reduce the overall space occupied by the swing bike.

[0040] In addition, the drive wheel 3 and crankshaft 4 in this utility model can also be applied to the field of tools such as wrenches. For example, by welding a screw sleeve to the outer wall of the end cover 31 and using the second shaft 41 as a handle, it can be used as a high-efficiency wrench. The drive wheel 3 and crankshaft 4 can also be extended to the field of manual rotary drives such as gear transmission, sprocket transmission and friction transmission, and can be adapted to meet actual use needs.

[0041] In other embodiments, a ratchet clutch, a ratchet and pawl engagement structure, or a bearing, one-way clutch, and gear engagement structure can be used instead of a one-way bearing and gear engagement structure to achieve the same function.

[0042] The implementation principle of a novel swing bike according to this utility model embodiment is as follows: the rider first places both feet on the pedals 5 located on both sides to maintain balance.

[0043] When both feet push off the pedal 5 forward, that is:

[0044] The crankshaft 4 swings forward, and the first shaft 40 rotates counterclockwise. The swing direction of the crankshaft 4 is the same as the direction in which the wheel 2 needs to move forward, that is, the wheel 2 can only move forward by rotating clockwise. At this time, the inner and outer rings of the driving one-way bearing 36 are locked, and the driving gear 34 drives the driven gear 35 to rotate. The driven gear 35 and the rotating shaft 33 rotate simultaneously. At this time, the inner and outer rings of the driven one-way bearing 37 separate. Since the driving one-way bearing 36 is interference-fitted with the wheel body 30, the drive wheel 3 follows the first shaft 40 to rotate counterclockwise. Since the wheel 2 and the drive wheel 3 are in frictional contact, the wheel 2 rotates clockwise, and the entire swinging vehicle moves forward.

[0045] When both feet push off the pedal 5 backward, that is:

[0046] The crankshaft 4 swings backward, and the first shaft 40 rotates clockwise. The swing direction of the crankshaft 4 is opposite to the direction that the wheel 2 wants to move forward. At this time, the inner and outer rings of the driving one-way bearing 36 separate. Since the driven gear 35 meshes with the driving gear 34, the rotating shaft 33 has a tendency to rotate in the opposite direction, causing the inner and outer rings of the driven one-way bearing 37 to lock. Since the driven one-way bearing 37 is interference-fitted with the wheel body 30, the driven gear 35 can only make circular motion around the driving gear 34. Since the driven gear 35 cannot rotate on its own, it can only drive the drive wheel 3 to rotate counterclockwise. Since the wheel 2 and the drive wheel 3 are in frictional contact, the wheel 2 rotates clockwise, and the entire swinging car moves forward.

[0047] Throughout the ride, wheel 2 remains in a forward-moving state, making the ride more continuous. Pedals 5 and crankshaft 4 swing back and forth at angles less than 90°, reducing the rider's range of motion, making operation more convenient, and effectively distributing the rider's energy. Drive wheel 3 is located above wheel 2 and uses friction drive. Compared to previous technologies, this increases the height of the drive unit and reduces its overall weight, allowing it to be used with more small-diameter wheels.

[0048] The second axle 41 is axially telescopic, employing an extension rod 413, a positioning nut 414, and a compression spring 415. This allows for adjustable crankshaft 4 length, shock absorption, and the rotation and storage of the pedals 5, accommodating riders of different heights and the storage of the swing bike. The swing bike can also be configured with single wheels, double wheels, or multiple wheels connected in series or parallel, broadening its application range and enhancing its versatility.

[0049] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A novel swing car, characterized by: The utility model provides a kind of swing car, including frame (1), wheel (2), drive wheel (3) and crankshaft (4), wheel (2) and drive wheel (3) are both rotationally installed on frame (1), drive wheel (3) is located above the center of wheel (2) and is in friction contact with wheel (2), crankshaft (4) is installed on drive wheel (3) and drives drive wheel (3) rotation by the way of forward and backward swing, the rotating direction of drive wheel (3) is always opposite to the rotating direction of wheel (2) when swing car advances.

2. The novel swing vehicle as claimed in claim 1, wherein: Drive wheel (3) includes wheel main body (30), wheel main body (30) is provided with accommodating cavity (300) inside, crankshaft (4) rotates and is arranged on the axis of wheel main body (30), rotation shaft (33) is rotationally connected in wheel main body (30), rotation shaft (33) is parallelly arranged on one side of crankshaft (4), driving gear (34) and driving one-way bearing (36) are fixedly installed on crankshaft (4), driven gear (35) and driven one-way bearing (37) are fixedly installed on rotation shaft (33), driving gear (34) is engaged with driven gear (35) and is located in accommodating cavity (300), driving one-way bearing (36) and driven one-way bearing (37) are all interference fit with wheel main body (30).

3. The novel swing vehicle as claimed in claim 2, wherein: Crankshaft (4) includes first shaft rod (40) that is arranged in drive wheel (3), the end of first shaft rod (40) is vertically fixed with the second shaft rod (41) that can be axially telescopic, the end of second shaft rod (41) away from first shaft rod (40) is vertically fixed with the third shaft rod (42) that can install pedal (5).

4. The novel swing vehicle as claimed in claim 3, wherein: Second shaft rod (41) includes mounting block (410) for connecting first shaft rod (40), sleeve (411) is fixed on mounting block (410), the end of sleeve (411) away from mounting block (410) is fixed with blocking block (412), elongated rod (413) is slidably arranged on blocking block (412) and extends into the inside of sleeve (411), one end of elongated rod (413) is fixed with third shaft rod (42), the other end of elongated rod (413) is screw-mounted with locating nut (414), compression spring (415) is also sleeved on elongated rod (413), and compression spring (415) is elastically supported between locating nut (414) and blocking block (412).

5. The novel swing vehicle as claimed in claim 4, wherein: Sleeve (411) is composed of a plurality of straight rods arranged around and parallel to each other, one end of the straight rod is fixedly connected with the mounting block (410), and the other end of the straight rod is fixedly connected with the blocking block (412).

6. The novel swing vehicle as claimed in claim 4, wherein: Sleeve (411) is a tubular structure, mounting block (410) is screw-mounted at one end of sleeve (411), and blocking block (412) is screw-mounted at the other end of sleeve (411).

7. The novel swing vehicle as claimed in claim 2, wherein: Wheel main body (30) is provided with end cover (31) at both ends respectively, and end cover (31) is fixed on wheel main body (30) by fixed bolt (32).

8. The novel swing vehicle as claimed in claim 1, wherein: Ratchet clutch, ratchet and pawl cooperation structure or bearing, one-way clutch and gear cooperation structure can be arranged in drive wheel (3) to cooperate with the work of crankshaft (4).

9. The novel swing vehicle according to any one of claims 1-8, characterized in that: The frame (1) comprises a front fork (10), a seat support rod (11) and a connecting rod (12), the wheel (2) is rotatably installed on the front fork (10), the bottom end of the seat support rod (11) is installed on the central shaft of the wheel (2), the connecting rod (12) is installed between the seat support rod (11) and the front fork (10) and above the wheel (2), and the driving wheel (3) is rotatably installed on the connecting rod (12) through a crankshaft (4).

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