Two-wheeled vehicle with shock absorbing structure

Abstract

The application discloses a two-wheeled vehicle with a damping structure, which comprises a frame, a front wheel and a rear wheel, a damping mechanism is arranged between the front wheel or the rear wheel and the frame, the damping mechanism comprises a mounting seat, a rotating shaft and a swing arm frame which are arranged on the frame, the rotating shaft is arranged in the mounting seat, the rotating shaft is connected with the upper end of the swing arm frame, the wheel is arranged at the lower end of the swing arm frame, the swing arm frame is arranged in an inclined mode, the swing arm frame drives the rotating shaft to rotate when the swing arm frame swings, the mounting seat is provided with a displacement block and an elastic element, the displacement block is sleeved on the rotating shaft, the rotating shaft and the displacement block can rotate relative to each other, the rotating shaft is fixed with a linkage part which is located on one side of the displacement block, the elastic element presses the displacement block on the linkage part, at least one guide inclined surface is arranged between the linkage part and the displacement block, a contact position which is matched with the guide inclined surface is arranged on the linkage part / displacement block, the linkage part pushes the displacement block to move to the side of the elastic element along the guide inclined surface when the rotating shaft rotates, the displacement block moves and extrudes the elastic element to realize damping.

Description

Technical Field

[0001] This invention relates to a two-wheeled vehicle, and more particularly to a two-wheeled vehicle with a shock-absorbing structure. Background Technology

[0002] Two-wheeled vehicles consist of a front wheel, a rear wheel, and a frame, and come in many varieties, such as bicycles, scooters, and electric vehicles. Scooters, in particular, are composed of a steering bar, pedals, a front fork, a handlebar, and wheels. When moving forward, a person places one foot on the scooter and pushes off the ground with the other foot. The friction between the shoe and the ground creates friction, and the scooter propels itself forward using the reaction force of this friction.

[0003] When operating a two-wheeled vehicle on uneven or bumpy roads, the wheels will bounce violently, severely affecting the user's control of the vehicle. The shaking and vibration transmitted from the wheels often cause discomfort to the user, requiring the two-wheeled vehicle to be equipped with a shock-absorbing structure for shock absorption.

[0004] For example, patent CN207889919U discloses a wheel shock absorption structure for an electric scooter and the electric scooter itself, including a fixed block, a fork, an axle, and a wheel. The outer end of the fork has a front fork opening, and the wheel is fixed in the front fork opening through the axle. The inner end of the fork is hinged to one end of the fixed block, forming a variable angle between them. An elastic connector is hinged between the ends away from the angle. The elastic connector is a telescopic hydraulic shock absorber cylinder, including a cylinder body and a telescopic rod inside the cylinder body. However, this shock absorption structure is relatively large, and its placement on one side of the fork and fixed block makes it prone to contacting other parts of the scooter, causing interference, and also making the overall structure of the scooter less compact.

[0005] For example, the electric bicycle disclosed in patent CN207889920U includes: a frame; a front wheel assembly, which includes a front swing arm and a front wheel, the front wheel being connected to the front swing arm; and a front shock absorber mechanism, which includes a first lead screw and a first lead screw nut, the first lead screw nut being threadedly connected to the first lead screw. The front shock absorber mechanism is mounted on the frame, and the front wheel assembly is connected to the frame through the front shock absorber mechanism. The front swing arm is connected to the first lead screw. When the front swing arm swings, it drives the first lead screw to rotate and causes the first lead screw nut to move along the axial direction of the first lead screw. When the first lead screw nut moves, it is subjected to shock absorption by the assembly.

[0006] The existing two-wheeled vehicles have the following problems: 1. The shock absorption is achieved through the structure of a lead screw and a nut block. During wheel vibration, the threads on the lead screw and nut block are easily worn, resulting in a short service life; 2. The nut block and lead screw cannot be adjusted to change or switch between soft and hard shock absorption, resulting in poor applicability. Summary of the Invention

[0007] Based on the above-mentioned lead screw and nut block combination for shock absorption, the threads on the lead screw and nut block are prone to wear, resulting in a short service life. Furthermore, the nut block and lead screw cannot be adjusted to switch between soft and hard shock absorption. Therefore, this invention provides a two-wheeled vehicle with a shock absorption structure.

[0008] The technical solution adopted by the present invention to solve the above-mentioned technical problem is as follows: a two-wheeled vehicle with a shock-absorbing structure, including a frame and wheels mounted on the frame. The wheels include a front wheel mounted on the front side of the frame and a rear wheel mounted on the rear side of the frame. A shock-absorbing mechanism is provided between the front wheel or the rear wheel and the frame. The wheels are connected to the frame through the shock-absorbing mechanism to dampen the bounce of the wheels. The shock-absorbing mechanism includes a mounting seat, a rotating shaft, and a swing arm mounted on the frame. The rotating shaft is installed in the mounting seat and can rotate relative to the mounting seat. The rotating shaft is connected to the upper end of the swing arm. The wheels are mounted on the lower end of the swing arm. The swing arm is tilted... The device is angled, and when the swing arm swings, it drives the rotating shaft to rotate. The mounting base is equipped with a displacement block and an elastic element. The displacement block and the mounting base are restricted from rotating relative to each other. The displacement block is sleeved on the rotating shaft, and the rotating shaft and the displacement block can rotate relative to each other. A linkage part located on one side of the displacement block is fixed on the rotating shaft. The elastic element presses the displacement block on the linkage part. At least one guide slope is provided between the linkage part and the displacement block. The linkage part / displacement block is provided with a contact part that cooperates with the guide slope. When the rotating shaft rotates, the linkage part pushes the displacement block along the guide slope to move towards the elastic element. The displacement block moves and squeezes the elastic element to absorb shock.

[0009] A further preferred technical solution of the present invention is as follows: the mounting base is provided with two sets of displacement blocks and elastic elements. The two displacement blocks are located on both sides of the linkage part, and the two elastic elements press the displacement blocks on the same side onto the linkage part in the middle. When the shaft rotates, the linkage part pushes the displacement blocks on both sides to move to both sides along the guide slope. The displacement blocks move and squeeze the elastic elements on the same side to reduce shock.

[0010] A further preferred embodiment of the present invention is as follows: an installation groove is provided on the inner side of the swing arm frame, and a connecting block is detachably installed in the installation groove. The connecting block and the installation groove are relatively rotationally restricted. A snap-fit ​​hole is provided on the connecting block for the end of the rotating shaft to be inserted. The end of the rotating shaft is provided with multiple snap teeth / grooves. The inner wall of the snap-fit ​​hole is provided with grooves / snap teeth that cooperate with the snap teeth / grooves. When the end of the rotating shaft is inserted into the snap-fit ​​hole, the snap teeth are engaged in the grooves, thereby restricting the relative rotation of the swing arm frame and the rotating shaft.

[0011] A further preferred embodiment of the present invention is as follows: a limiting pin is fixed on the side of the displacement block away from the linkage part, and when the linkage part pushes the displacement block to move to one side, the limiting pin can abut against the inner wall of the mounting base to limit the maximum movement distance of the displacement block.

[0012] A further preferred embodiment of the present invention is as follows: a slot 1 is provided on the side of the displacement block away from the linkage part, and a slot 2 is provided on the inner wall of the mounting base opposite to the slot 1. One end of the elastic member is inserted into the slot 1, and the other end of the elastic member is inserted into the slot 2. The elastic member is supported between the displacement block and the inner wall of the mounting base, and presses the displacement block tightly against the linkage part.

[0013] A further preferred embodiment of the present invention is as follows: The mounting base has swing arm frames on both sides, the two swing arm frames are arranged opposite to each other, the two ends of the rotating shaft extend from both sides of the mounting base, and the two ends of the rotating shaft are respectively connected to the upper ends of the two swing arm frames. A wheel is installed at the lower end of the swing arm frame. When the swing arm frame swings, it drives the rotating shaft to rotate. The mounting base includes a hollow cavity with openings on both sides. Side covers are provided on the openings. The two ends of the rotating shaft extend from the side covers on both sides. The side covers have through holes for the rotating shaft to pass through. The upper ends of the two swing arm frames each have shaft holes for the ends of the rotating shaft to pass through. The ends of the rotating shaft have threaded portions. The ends of the rotating shaft pass through the shaft holes and are connected to a nut through the threaded portions.

[0014] A further preferred embodiment of the present invention is as follows: the displacement block is provided with at least one first inclined surface and at least one second inclined surface on the side opposite to the linkage part for use as guide inclined surfaces, the first inclined surface and the second inclined surface are inclined in opposite directions, and the linkage part is provided with a third inclined surface that cooperates with the first inclined surface and a fourth inclined surface that cooperates with the second inclined surface on both sides, the third inclined surface and the fourth inclined surface are inclined in opposite directions, and the third inclined surface and the fourth inclined surface are used as contacting parts to contact and cooperate with the guide inclined surface.

[0015] A further preferred embodiment of the present invention is as follows: the contacting part is an inclined surface that cooperates with the guide inclined surface, and the displacement block is sleeved on the rotating shaft and moves along the axial direction of the rotating shaft.

[0016] A further preferred embodiment of the present invention is as follows: both the front wheel and the rear wheel are provided with shock absorption mechanisms between themselves and the frame, and the front wheel and the rear wheel are connected to the frame through the front shock absorption mechanism and the rear shock absorption mechanism, respectively.

[0017] A further preferred embodiment of the present invention is as follows: the frame includes a pedal and a connecting arm rotatably connected to the front side of the pedal, the upper end of the connecting arm is connected to a vertical pole, the top of the vertical pole is provided with a handle, the front shock absorption mechanism is located at the bottom of the connecting arm, and the rear shock absorption mechanism is located at the rear of the pedal.

[0018] Compared with the prior art, the advantages of this invention are that the mounting base is provided with a displacement block and an elastic element. The displacement block is restricted from relative rotation with the mounting base. The displacement block is sleeved on a rotating shaft, and the rotating shaft and the displacement block can rotate relative to each other. A linkage part located on one side of the displacement block is fixed on the rotating shaft. The elastic element presses the displacement block onto the linkage part. At least one guide slope is provided between the linkage part and the displacement block. The linkage part / displacement block is provided with a contact part that cooperates with the guide slope. When the rotating shaft rotates, the linkage part pushes the displacement block along the guide slope to move towards the elastic element. The displacement block moves and squeezes the elastic element to absorb shock. This shock absorption mechanism controls the lateral movement of the displacement block by rotating the shaft, compressing the elastic element to absorb shock. Its small size makes the two-wheeled vehicle structure more aesthetically pleasing and compact, and it is less likely to interfere with other parts of the two-wheeled vehicle. It is reasonable in use, and the displacement block moves through the cooperation of the guide ramp and the contact part, making the structure more stable. Compared with the structure of the lead screw and nut block, it is less likely to be affected by wear and tear, thus improving its service life. Furthermore, the shock absorption mechanism of the two-wheeled vehicle can be adjusted to be hard or soft by changing the slope of the guide ramp, making it suitable for different application environments and enhancing its applicability. Attached Figure Description

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be construed as limiting the scope of the invention. Furthermore, unless specifically indicated, the drawings are only schematic representations of the composition or structure of the described objects and may contain exaggerated depictions, and the drawings are not necessarily drawn to scale.

[0020] Figure 1 This is a schematic diagram of the 3D structure of a scooter;

[0021] Figure 2 This is a side view of the scooter;

[0022] Figure 3 This is a schematic diagram of the front of a scooter;

[0023] Figure 4 This is a diagram showing the rear of the scooter.

[0024] Figure 5 This is a schematic diagram showing the disassembly of the swing arm and the pivot.

[0025] Figure 6 This is a schematic diagram showing the disassembly of the front shock absorber mechanism;

[0026] Figure 7 This is a schematic diagram showing the disassembly of the rear shock absorber mechanism;

[0027] Figure 8 This is a schematic diagram of the internal structure of the mounting base;

[0028] Figure 9This is a cross-sectional view of the mounting base;

[0029] Figure 10 This is a three-dimensional schematic diagram of the internal structure of the mounting base;

[0030] Figure 11 This is a structural schematic diagram of the linkage and displacement block;

[0031] Figure 12 This is an alternative arrangement of the linkage, displacement block, and elastic element;

[0032] Figure 13 A schematic diagram of another combination of linkage and displacement block;

[0033] Figure 14 This is a schematic diagram showing the breakdown of another structure for the linkage and displacement block.

[0034] In the diagram: 1. Frame; 2. Handlebar; 3. Post; 4. Pedal; 5. Diagonal frame; 6. Handlebar tube; 7. Connecting arm; 8. Rear shock absorber; 9. Front shock absorber; 10. Rear wheel; 11. Front wheel; 12. Swing arm; 13. Mounting base; 14. Nut; 15. Washer 2; 16. Nut groove; 17. Connecting block; 18. Contact surface; 19. Snap-fit ​​hole; 20. Gear; 21. Shaft; 22. Threaded part; 23. Snap-fit ​​tooth; 24. Hollow cavity; 25. Mounting cavity; 26. Bushing; 27. Side cover; 28. 29. Screw; 30. Through hole; 31. Washer 1; 32. Elastic element; 33. Displacement block; 34. Linkage part; 35. Mounting groove; 36. Intermediate sleeve; 37. Limiting pin; 38. Guide slope; 39. Abutting part; 40. Abutting plane; 41. Shaft hole; 42. Slot 2; 43. Protrusion 1; 44. First linkage block; 45. Second linkage block; 46. Protrusion 2; 47. Slot 1; 48. First side; 49. Second side; 50. First slope; 51. Second slope; 52. Third slope; 53. Fourth slope. Detailed Implementation

[0035] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely descriptive and exemplary and should not be construed as limiting the scope of the invention.

[0036] It should be noted that similar labels in the following figures indicate similar items; therefore, once an item is defined in one figure, it may not be further defined and explained in subsequent figures.

[0037] Figures 1-12As shown, a two-wheeled vehicle with a shock-absorbing structure, such as a scooter, includes a frame 1 and wheels mounted on the frame 1. The wheels include a front wheel 11 mounted on the front side of the frame 1 and a rear wheel 10 mounted on the rear side of the frame 1. The front wheel 11 and the rear wheel 10 are rotatably mounted on the front and rear sides of the frame 1. The scooter can be a foot-powered scooter or an electrically driven scooter.

[0038] When a foot-powered scooter moves forward, one foot is on the scooter while the other foot pushes off the ground. The friction between the shoe and the ground creates friction, and the scooter moves forward by the reaction force of this friction.

[0039] When an electric scooter moves forward, the motor is activated, which drives the scooter's wheels to rotate, thus propelling the scooter forward.

[0040] When riding a scooter over uneven or bumpy surfaces, the wheels bounce violently, severely affecting the user's control of the handlebars. The wobbling and vibration from the wheels often cause discomfort, necessitating a shock-absorbing mechanism. This patent primarily describes a shock-absorbing mechanism installed between the wheels and the frame 1 to reduce the bounce generated by the wheels, resulting in a more comfortable and better user experience.

[0041] A shock-absorbing mechanism is provided between the front wheel 11 or the rear wheel 10 and the frame 1. The wheel is connected to the frame 1 through the shock-absorbing mechanism to dampen the wheel's bounce. The shock-absorbing mechanism can be provided between the front wheel 11 and the frame 1, or between the rear wheel 10 and the frame 1, or both the front wheel 11 and the rear wheel 10 and the frame 1 can be provided with shock-absorbing mechanisms.

[0042] Figure 1 As shown, the above-mentioned shock absorption mechanism includes a mounting base 13, a rotating shaft 21, and a swing arm 12 mounted on the frame 1. The rotating shaft 21 is installed in the mounting base 13 and can rotate relative to the mounting base 13. The rotating shaft 21 is connected to the upper end of the swing arm 12. The wheel is installed at the lower end of the swing arm 12. The swing arm 12 is inclined. When the swing arm 12 swings up and down around the axis of the rotating shaft 21, the swing arm 12 can drive the rotating shaft 21 to rotate.

[0043] Figure 8 , Figure 9 As shown, the mounting base 13 is provided with a displacement block 32 and an elastic element 31. The displacement block 32 is restricted to rotate relative to the mounting base 13, that is, the displacement block 32 cannot rotate relative to the mounting base 13. The displacement block 32 is sleeved on the rotating shaft 21, and the displacement block 32 and the rotating shaft 21 can rotate relative to each other, so that the displacement block 32 is limited to move laterally left and right within the mounting base 13.

[0044] A linkage part 33 is fixed on one side of the displacement block 32 on the rotating shaft 21. An elastic member 31 is located on the other side of the displacement block 32. The displacement block 32 is located between the elastic member 31 and the linkage part 33. The elastic force of the elastic member 31 acts on the displacement block 32, causing the displacement block 32 to move towards the linkage part 33. Furthermore, the elastic member 31 presses the displacement block 32 tightly against the linkage part 33. At least one guide slope 37 is provided between the linkage part 33 and the displacement block 32. The linkage part 33 / displacement block 32 is provided with a contact part 38 that cooperates with the guide slope 37.

[0045] When the shaft 21 rotates, the linkage 33 pushes the displacement block 32 along the guide slope 37 to move towards the elastic member 31. The displacement block 32 moves and squeezes the elastic member 31 to reduce shock.

[0046] The shock absorption mechanism controls the lateral movement of the displacement block 32 by rotating the shaft 21 to compress the elastic element 31 for shock absorption. Its small size makes the scooter structure more beautiful and compact, and it is less likely to interfere with other parts of the scooter. It is reasonable to use. The displacement block 32 moves through the cooperation of the guide slope 37 and the contact part 38, making the structure more stable. Compared with the structure of the lead screw and nut block, it is less likely to affect normal use due to wear, thus improving its service life. Furthermore, the shock absorption mechanism of the scooter can be adjusted to hard or soft shock absorption by changing the slope of the guide slope 37, making it suitable for different usage environments and enhancing its applicability.

[0047] When the scooter needs hard shock absorption via the damping mechanism, the slope of the guide ramp 37 can be increased; when the scooter needs soft shock absorption via the damping mechanism, the slope of the guide ramp 37 can be decreased. When the rotation angle of the pivot 21 is the same, the distance that the linkage 33 pushes the displacement block 32 laterally along the guide ramp 37 with the larger slope is greater than the distance that the linkage 33 pushes the displacement block 32 laterally along the guide ramp 37 with the smaller slope. The larger lateral movement distance of the displacement block 32 results in greater elastic resistance from the elastic element 31, while the smaller lateral movement distance results in less elastic resistance from the elastic element 31. When different usage locations or users have different needs, the soft and hard shock absorption of the scooter can be adjusted by adjusting the slope of the guide ramp 37.

[0048] Figure 6 , Figure 7 As shown, preferably, the mounting base 13 includes a hollow cavity 24, and the hollow cavity 24 is provided with a mounting cavity 25 for mounting the rotating shaft 21, the displacement block 32 and the elastic element 31. Most preferably, the mounting cavity 25 is a square inner cavity, and the displacement block 32 is a square block whose shape is adapted to the shape of the mounting cavity 25, so that the displacement block 32 is limited to the mounting cavity 25 and can only move laterally along the inner wall of the mounting cavity 25, and the displacement block 32 and the mounting base 13 will not rotate relative to each other.

[0049] Preferably, the displacement block 32 is sleeved on the rotating shaft 21 and moves laterally left and right along the axial direction of the rotating shaft 21, that is, the mounting base 13 limits the displacement block 32 to move axially on the rotating shaft 21.

[0050] The linkage part 33 is an annular block independent of the rotating shaft 21. The annular block is fitted onto the rotating shaft 21 and fixed with screws, thus fixing the annular block to the rotating shaft 21. Preferably, an integral square protrusion 42 is fixed on the rotating shaft 21. The center hole of the annular block is a square hole that matches the shape of the protrusion 42. The annular block is fitted onto the protrusion 42, so that the annular block will not rotate relative to the rotating shaft 21, and the connection between the annular block and the rotating shaft 21 is more stable.

[0051] Figure 11 As shown, preferably, the guide slope 37 is disposed on the displacement block 32, and the contact part 38 is disposed on the linkage part 33. Most preferably, the displacement block 32 is provided with three guide slopes 37, and the linkage part 33 is provided with three contact parts 38 corresponding to the three guide slopes 37. One contact part 38 cooperates with one guide slope 37, so that the linkage part 33 and the displacement block 32 are more stable.

[0052] Preferably, the contact part 38 is an inclined surface that cooperates with the guide inclined surface 37. The contact part 38 and the guide inclined surface 37 are in contact and linked, which makes the linkage more stable.

[0053] Specifically, the side opposite to the displacement block 32 and the linkage part 33 is the first side surface 47, and the other side opposite to the elastic member 31 is the second side surface 48. Three integrated first linkage blocks 43 are protruding on the first side surface 47. The three first linkage blocks 43 are arranged in a ring around the axis of the rotating shaft 21. One end of the three first linkage blocks 43 is set as a guide slope 37. On the side opposite to the displacement block 32, the linkage part 33 is provided with three second linkage blocks 44 that cooperate with the three first linkage blocks 43. The three second linkage blocks 44 are integrated with the linkage part 33 and are arranged in a ring around the axis of the rotating shaft 21 on the side opposite to the displacement block 32. One end of the second linkage block 44 is set as a contact part 38 that cooperates with the guide slope 37 on the displacement block 32. When the elastic member 31 presses the displacement block 32 tightly onto the linkage part 33, the first linkage blocks 43 and the second linkage blocks 44 are interleaved.

[0054] In addition, the other ends of the first linkage block 43 and the second linkage block 44 are both abutting planes 39. When the rotating shaft 21 rotates in the opposite direction, the abutting plane 39 on the second linkage block 44 can rotate and abut against the abutting plane 39 of the first linkage block 43, restricting the rotation of the rotating shaft 21 relative to the mounting base 13 and preventing the rotating shaft 21 from rotating excessively when it reverses back to its original position.

[0055] Figure 8 As shown, a limit pin 36 is fixed on the second side 48 of the displacement block 32. When the linkage part 33 rotates, it pushes the displacement block 32 to move to one side. The limit pin 36 can press against the inner wall of one side of the mounting base 13 to limit the maximum movement distance of the displacement block 32. This can limit the maximum angle of the swing arm 12 swinging upward and also prevent the contact part 38 from moving out of the guide slope 37 and causing a malfunction.

[0056] Preferably, threaded holes are provided on the four corners of the second side 48 of the displacement block 32, and four limiting pins 36 are respectively threaded into the four threaded holes and fixed to the displacement block 32.

[0057] Figure 11 As shown, for the stability of the elastic element 31, a slot 46 is provided on the second side 48 of the displacement block 32, and a slot 41 is provided on the inner wall of the mounting base 13 on the side opposite to the slot 46. One end of the elastic element 31 is inserted into the slot 46, and the other end of the elastic element 31 is inserted into the slot 41. The elastic element 31 is supported between the displacement block 32 and the inner wall of the mounting base 13, and presses the displacement block 32 tightly onto the linkage part 33. The slots 46 and 41 make the elastic element 31 more stably set in the mounting base 13, which is used to provide elastic force on the displacement block 32 and to provide elastic buffering.

[0058] Specifically, protrusions 45 are provided on the four corners of the second side 48 of the displacement block 32. The four threaded holes are respectively opened on the four protrusions 45. The four protrusions 45 are integrally formed with the displacement block 32, and the four protrusions 45 surround to form the slot 46.

[0059] Preferably, the elastic element 31 includes a spring, an elastic silicone element, an elastic rubber element, or at least one disc spring. Most preferably, the elastic element 31 is an elastic structure composed of multiple disc springs. The number and combination of disc springs are not limited, and the disc springs are sleeved on the rotating shaft 21.

[0060] The mounting base 13 can be equipped with a set of displacement blocks 32 and elastic elements 31, or multiple sets of displacement blocks 32 and elastic elements 31 for shock absorption.

[0061] Figure 8 , Figure 9As shown, preferably, the mounting base 13 is provided with two sets of displacement blocks 32 and elastic elements 31. The two displacement blocks 32 are respectively located on both sides of the linkage part 33, which is located in the middle of the rotating shaft 21. Both sides of the linkage part 33 are provided with abutment parts 38 that cooperate with the guide slope 37 on the displacement blocks 32. The two elastic elements 31 are respectively located on the outer side of the two displacement blocks 32. The two elastic elements 31 push the displacement blocks 32 on the same side towards the middle, pressing the displacement blocks 32 on the same side tightly against the linkage part 33 in the middle. When the rotating shaft 21 rotates, the linkage part 33 simultaneously pushes the displacement blocks 32 on both sides to move to the sides along the guide slope 37. The displacement blocks 32 move and squeeze the elastic elements 31 on the same side to reduce vibration. By providing displacement blocks 32 on both sides of the linkage part 33, the structure is more stable and the vibration reduction effect is optimized.

[0062] Each of the two displacement blocks 32 is provided with a limiting pin 36 on its second side 48. When the two displacement blocks 32 move to the sides respectively, the limiting pin 36 can abut against the inner walls of the two sides of the mounting base 13 to limit the maximum lateral movement distance of the displacement blocks 32.

[0063] Figure 3 , Figure 4 As shown, in addition, swing arm brackets 12 are provided on both sides of the mounting base 13. The two swing arm brackets 12 are arranged opposite each other. The two ends of the rotating shaft 21 extend from both sides of the mounting base 13, and the two ends of the rotating shaft 21 are respectively connected to the upper ends of the two swing arm brackets 12. The wheels are installed at the lower ends of the swing arm brackets 12. When the swing arm brackets 12 swing up and down, they can drive the rotating shaft 21 to rotate. The two swing arm brackets 12 can better bear the force when the wheel bounces, have higher strength, and can better drive the rotating shaft 21 to rotate.

[0064] Specifically, the hollow cavity 24 has openings on both sides, and side covers 27 are provided on the openings. The two side covers 27 are fixedly connected to the two sides of the mounting base 13 by screws 28. The side covers 27 cover the openings on both sides to form the mounting cavity 25. The two ends of the rotating shaft 21 extend from the side covers 27 on both sides respectively. The side covers 27 are provided with through holes 29 for the rotating shaft 21 to pass through. The upper ends of the swing arm frames 12 on both sides are provided with shaft holes 40 for the ends of the rotating shaft 21 to pass through. The ends of the rotating shaft 21 are provided with threaded parts 22. The ends of the rotating shaft 21 pass through the shaft holes 40 and are connected to the nuts 14 through the threaded parts 22, so that the swing arm frames 12 on both sides are connected to the two ends of the rotating shaft 21.

[0065] A bushing 26 is inserted into the through hole 29, and the rotating shaft 21 passes through the center of the bushing 26.

[0066] The aforementioned slot 2 41 is provided on the inner wall of the side cover 27 on both sides. The other end of the elastic member 31 is inserted into the slot 2 41 on the side cover 27. A gasket 30 is provided between the elastic member 31 and the side cover 27. The gasket 30 is sleeved on the rotating shaft 21 and is located in the slot 2 41.

[0067] A nut groove 16 is provided on the outer side of the upper end of the swing arm 12. The nut 14 is housed in the nut groove 16. One end of the shaft hole 40 is connected to the nut groove 16. A washer 15 is provided between the inner side of the nut 14 and the inner bottom of the nut groove 16. The washer 15 is sleeved on the rotating shaft 21. A step is provided between the threaded part 22 and the outer wall of one end of the rotating shaft 21. When the nut 14 is tightened, the washer 15 is pressed tightly onto the step.

[0068] The wheel is located between the two swing arms 12, and the wheel is connected to the swing arms 12 on both sides via axles.

[0069] Working principle: When the scooter bounces up and down, the swing arm 12 vibrates with the wheels, causing it to swing up and down around the axis of the rotating shaft 21. During the upward swing of the swing arm 12, the rotating shaft 21 is rotated. The linkage part 33 in the middle of the rotating shaft 21 rotates together with the rotating shaft 21. During the rotation, the contact part 38 on the linkage part 33 slides along the guide slope 37 on the two side displacement blocks 32, and the contact part 38 pushes the two side displacement blocks 32 to move apart to the sides. The two side displacement blocks 32 squeeze the elastic element 31 on the same side. The elastic element 31 on the same side provides resistance to the lateral movement of the displacement block 32, so that the displacement block 32 will give the linkage part 33 a reverse rotational torque when it moves, thereby greatly buffering the rotation amplitude of the swing arm 12 and achieving a buffering effect.

[0070] Figures 7-9 As shown, the damping mechanism can also be configured to insert an intermediate sleeve 35 into the mounting cavity 25. The shape of the intermediate sleeve 35 is adapted to the shape of the mounting cavity 25. The rotating shaft 21, the elastic element 31 and the displacement block 32 are all installed in the intermediate sleeve 35. The shape of the displacement block 32 is adapted to the shape of the central hole of the intermediate sleeve 35.

[0071] Preferably, both the front wheel 11 and the rear wheel 10 are provided with shock-absorbing mechanisms between themselves and the frame 1. The front wheel 11 and the rear wheel 10 are connected to the frame 1 through the front shock-absorbing mechanism 9 and the rear shock-absorbing mechanism 8, respectively. The front shock-absorbing mechanism 9 and the rear shock-absorbing mechanism 8 have the same structure. The provision of shock-absorbing mechanisms on both the front and rear wheels makes the scooter's shock absorption effect better and more comfortable to use.

[0072] Figure 1 As shown, the frame 1 has the same structure as existing scooters. Specifically, the frame 1 includes a footboard 4 and a connecting arm 7 rotatably connected to the front of the footboard 4. A slant frame 5 is fixed to the front of the footboard 4, and a handlebar tube 6 is provided on the slant frame 5. The handlebar tube 6 is sleeved on the upper end of the connecting arm 7 and rotatably connected to the upper end of the connecting arm 7. The upper end of the connecting arm 7 passes through the handlebar tube 6 and is connected to the upright post 3. A handlebar 2 is provided at the top of the upright post 3. See patent CN214356495U for more information.

[0073] The front shock absorber 9 is located at the bottom of the connecting arm 7, and the rear shock absorber 8 is located at the tail of the pedal 4. Preferably, the mounting base 13 of the front shock absorber 9 is integrally formed at the bottom of the connecting arm 7, and the mounting base 13 of the rear shock absorber 8 is fixedly connected to the tail of the pedal 4 by screws 28. A variable angle can be formed between the connecting arm 7 and the swing arm 12, and the angle changes when the swing arm 12 is subjected to vibration and swing.

[0074] Figure 5 As shown, the swing arm 12 is provided with a snap-fit ​​hole 19 for inserting the end of the rotating shaft 21. The end of the rotating shaft 21 is provided with multiple snap teeth 23 / tooth grooves 20. The inner wall of the snap-fit ​​hole 19 is provided with tooth grooves 20 / snap teeth 23 that cooperate with the snap teeth 23 / tooth grooves 20. When the end of the rotating shaft 21 is inserted into the snap-fit ​​hole 19, the snap teeth 23 are engaged in the tooth grooves 20, thereby restricting the relative rotation of the swing arm 12 and the rotating shaft 21, so that the swing arm 12 can drive the rotating shaft 21 to rotate when it swings.

[0075] Preferably, a mounting groove 34 is provided on the inner side of the upper end of the swing arm 12. The shaft hole 40 of the swing arm 12 is located between the mounting groove 34 and the nut groove 16. The shaft hole 40 connects the mounting groove 34 and the nut groove 16. A connecting block 17 is detachably installed in the mounting groove 34. The connecting block 17 restricts relative rotation with the mounting groove 34. A snap-fit ​​hole 19 is provided on the connecting block 17, and one end of the snap-fit ​​hole 19 is connected to the shaft hole 40. When the rotating shaft 21 is connected to the swing arm 12, the end of the rotating shaft 21 passes through the snap-fit ​​hole 19 and the shaft hole 40 in sequence and connects with the nut 14 in the nut groove 16. The detachable connecting block 17 facilitates the machining of the snap-fit ​​hole 19, and the connecting block 17 can be replaced after the tooth groove 20 / tooth 23 in the snap-fit ​​hole 19 wears out, without having to replace the entire swing arm 12, thus saving costs.

[0076] Specifically, the outer wall of the connecting block 17 is provided with at least one contact surface 18, and the shape of the mounting groove 34 is adapted to the shape of the connecting block 17. When the connecting block 17 is inserted into the mounting groove 34, the contact surface 18 on the connecting block 17 and the contact surface 18 on the inner wall of the mounting groove 34 are in surface-to-surface contact, thereby restricting the relative rotation between the connecting block 17 and the mounting groove 34. Preferably, contact surfaces 18 are provided at symmetrical positions on both sides of the connecting block 17.

[0077] Preferably, the rotating shaft 21 is provided with a plurality of locking teeth 23, and the inner wall of the locking hole 19 is provided with the same number of tooth grooves 20 as the locking teeth 23. Most preferably, the end of the rotating shaft 21 is provided with an external spline, and the inner wall of the locking hole 19 is provided with an internal spline. The tooth grooves 20 are formed between the teeth of two adjacent internal splines. When the end of the rotating shaft 21 is inserted into the locking hole 19, the teeth of the external spline and the teeth of the internal spline are interlocked and engaged.

[0078] The structure where the locking teeth 23 on the rotating shaft 21 engage with the grooves 20 on the inner wall of the locking hole 19 allows the user to adjust the tilt angle of the swing arm 12 as needed. To adjust the tilt angle, move the swing arm 12 outwards to disengage the locking teeth 23 from the locking hole 19, rotate the swing arm 12 relative to the rotating shaft 21, and then engage the locking hole 19 on the swing arm 12 with the locking teeth 23 on the rotating shaft 21. This completes the adjustment. The tilt angle of the swing arm 12 can be adjusted to change the distance between the bottom of the scooter footboard 4 and the ground, thus raising or lowering the bottom of the scooter footboard 4.

[0079] For example, if the external spline on the rotating shaft 21 has 36 teeth and the internal spline on the snap-fit ​​hole 19 has 36 teeth, and the teeth of the external and internal splines mesh alternately, then 36 tooth grooves 20 are formed on the inner wall of the snap-fit ​​hole 19. The snap teeth 23 on the rotating shaft 21 are respectively engaged in one of the corresponding tooth grooves 20. At this time, rotating the swing arm 12 causes the snap teeth 23 to rotate and engage in the next tooth groove 20, thus adjusting the tilt angle of the swing arm 12 by 10°. The number of teeth can be set according to requirements and is not limited to 36.

[0080] Preferably, the rotating shaft 21 is parallel to the wheel axle.

[0081] Figure 12 As shown, in addition, regarding the positions of the displacement block 32, elastic element 31 and linkage part 33, we have another structure. Linkage parts 33 are fixed on both ends of the rotating shaft 21. The inner side of the two linkage parts 33 is provided with displacement blocks 32 that cooperate and link with the linkage parts 33 on the same side. The elastic element 31 is provided in the middle of the two displacement blocks 32. When the rotating shaft 21 rotates, it drives the two linkage parts 33 to rotate. The rotation of the two linkage parts 33 pushes the displacement blocks 32 on the same side to move towards the middle. The two displacement blocks 32 move towards the middle, approach each other, and squeeze the elastic element 31 in the middle for shock absorption.

[0082] Figure 13 , Figure 14 As shown, in addition to the above-mentioned displacement block 32 and linkage part 33, we have another solution. The first side surface 47 of the displacement block 32 is provided with at least one first inclined surface 49 and at least one second inclined surface 50 for use as the above-mentioned guide inclined surface 37. The inclination direction of the first inclined surface 49 is opposite to the inclination direction of the second inclined surface 50, such as one inclined to the left and the other inclined to the right. Both sides of the linkage part 33 are provided with a third inclined surface 51 that cooperates with the first inclined surface 49 and a fourth inclined surface 52 that cooperates with the second inclined surface 50. The inclination direction of the third inclined surface 51 is opposite to the inclination direction of the fourth inclined surface 52, such as one inclined to the left and the other inclined to the right. The third inclined surface 51 and the fourth inclined surface 52 are used as contact parts 38 to contact and cooperate with the guide inclined surface 37.

[0083] Specifically, three integral first linkage blocks 43 are protruding from the first side surface 47 of the displacement block 32. The three first linkage blocks 43 are arranged in a ring around the axis of the rotating shaft 21 on the first side surface 47. One end of the three first linkage blocks 43 is set as a first inclined surface 49, and the other end of the three first linkage blocks 43 is set as a second inclined surface 50. On both sides of the linkage part 33, three second linkage blocks 44 are protruding to cooperate with the first linkage blocks 43 on the displacement blocks 32 on both sides. The three second linkage blocks 44 are linked with the first linkage blocks 43. The first linkage block 43 is an integral part, and the three second linkage blocks 44 are arranged in a ring on both sides of the linkage block 33 with the axis of the rotating shaft 21 as the center. One end of the three second linkage blocks 44 is set as the third inclined surface 51, and the other end of the three second linkage blocks 44 is set as the fourth inclined surface 52. When the elastic member 31 presses the displacement block 32 tightly onto the linkage block 33, the first linkage block 43 and the second linkage block 44 are interleaved and inserted, and the first inclined surface 49 and the third inclined surface 51 are in contact and linked, and the second inclined surface 50 and the fourth inclined surface 52 are in contact and linked.

[0084] When the two displacement blocks 32 are located on both sides of the linkage 33 for shock absorption, the linkage 33 rotates, causing the contact part 38 to slide along the guide slope 37 and push the two displacement blocks 32 to move laterally towards the elastic member 31 on the same side. The displacement blocks 32 squeeze the elastic member 31 to absorb shock. At this time, one side of the linkage 33 is engaged by the first slope 49 and the third slope 51, and the other side is engaged by the second slope 50 and the fourth slope 52.

[0085] By setting the linkage part 33 and displacement block 32 of this structure, the displacement block 32 and linkage part 33 can be installed in reverse. The displacement block 32 on the left can be installed on the right for use, and the linkage part 33 can also be rotated 180 degrees for use. There is no need to consider the orientation of the linkage part 33 during assembly, which is convenient for installation and manufacturing. Only one type of displacement block 32 needs to be produced.

[0086] The above describes the two-wheeled vehicle with a shock-absorbing structure provided by the present invention. Specific examples have been used to illustrate the principles and implementation methods of the invention. The descriptions of the embodiments above are only for the purpose of helping to understand the invention and its core ideas. It should be noted that those skilled in the art can make various improvements and modifications to the invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A two-wheeled vehicle with a shock-absorbing structure, comprising a frame and wheels mounted on the frame, the wheels including a front wheel mounted on the front side of the frame and a rear wheel mounted on the rear side of the frame, a shock-absorbing mechanism being provided between the front wheel or the rear wheel and the frame, the wheels being connected to the frame through the shock-absorbing mechanism to dampen wheel bounce, characterized in that, The shock absorption mechanism includes a mounting base, a rotating shaft, and a swing arm mounted on the vehicle frame. The rotating shaft is installed inside the mounting base and can rotate relative to it. The rotating shaft is connected to the upper end of the swing arm, and the wheel is installed at the lower end of the swing arm. The swing arm is tilted, and when it swings, it drives the rotating shaft to rotate. The mounting base contains a displacement block and an elastic element. The displacement block is relatively limited in its rotation relative to the mounting base. The displacement block is sleeved on the rotating shaft, and the rotating shaft and the displacement block can rotate relative to each other. A linkage part located on one side of the displacement block is fixed on the rotating shaft. The elastic element presses the displacement block onto the linkage part. At least one guide ramp is provided between the linkage part and the displacement block. The linkage part / displacement block has an abutment part that cooperates with the guide ramp. The mounting base contains... There are two sets of displacement blocks and elastic elements. The two displacement blocks are located on both sides of the linkage part. The two elastic elements press the displacement blocks on the same side onto the linkage part in the middle. The side of the displacement block opposite to the linkage part is provided with at least one first inclined surface and at least one second inclined surface as guide inclined surfaces. The first and second inclined surfaces are inclined in opposite directions. Both sides of the linkage part are provided with a third inclined surface that cooperates with the first inclined surface and a fourth inclined surface that cooperates with the second inclined surface. The third and fourth inclined surfaces are inclined in opposite directions. The third and fourth inclined surfaces are used as contact parts to contact and cooperate with the guide inclined surfaces. When the shaft rotates, the linkage part pushes the displacement blocks on both sides to move to both sides along the guide inclined surfaces. The displacement blocks move and squeeze the elastic elements on the same side to absorb shock.

2. The two-wheeled vehicle with a shock-absorbing structure according to claim 1, characterized in that, The inner side of the swing arm frame is provided with a mounting groove, and a connecting block is detachably installed in the mounting groove. The connecting block and the mounting groove are restricted from relative rotation. The connecting block is provided with a snap-fit ​​hole for the end of the rotating shaft to be inserted. The end of the rotating shaft is provided with multiple snap teeth / grooves. The inner wall of the snap-fit ​​hole is provided with grooves / snap teeth that cooperate with the snap teeth / grooves. When the end of the rotating shaft is inserted into the snap-fit ​​hole, the snap teeth are engaged in the grooves, thereby restricting the relative rotation of the swing arm frame and the rotating shaft.

3. The two-wheeled vehicle with a shock-absorbing structure according to claim 1, characterized in that, A limit pin is fixed on the side of the displacement block away from the linkage. When the linkage pushes the displacement block to move to one side, the limit pin can press against the inner wall of the mounting base to limit the maximum movement distance of the displacement block.

4. The two-wheeled vehicle with a shock-absorbing structure according to claim 1, characterized in that, The displacement block has a slot one on the side away from the linkage part, and the mounting base has a slot two on its inner wall opposite to the slot one. One end of the elastic member is inserted into the slot one, and the other end of the elastic member is inserted into the slot two. The elastic member is supported between the displacement block and the inner wall of the mounting base, and presses the displacement block tightly against the linkage part.

5. The two-wheeled vehicle with a shock-absorbing structure according to claim 1, 2, 3, or 4, characterized in that, The mounting base has swing arms on both sides, which are arranged opposite each other. The two ends of the rotating shaft extend from both sides of the mounting base and are respectively connected to the upper ends of the two swing arms. The wheels are installed at the lower ends of the swing arms. When the swing arms swing, they drive the rotating shaft to rotate. The mounting base includes a hollow cavity with openings on both sides. Side covers are provided on the openings. The two ends of the rotating shaft extend from the side covers on both sides. The side covers are provided with through holes for the rotating shaft to pass through. The upper ends of the two swing arms are provided with shaft holes for the ends of the rotating shaft to pass through. The ends of the rotating shaft are provided with threads. The ends of the rotating shaft pass through the shaft holes and are connected to nuts through the threads.

6. The two-wheeled vehicle with a shock-absorbing structure according to claim 1, characterized in that, The contact part is an inclined surface that cooperates with the guide inclined surface, and the displacement block is sleeved on the rotating shaft and moves along the axial direction of the rotating shaft.

7. The two-wheeled vehicle with a shock-absorbing structure according to claim 1, characterized in that, Both the front and rear wheels are equipped with shock absorption mechanisms between themselves and the frame, and the front and rear wheels are connected to the frame through the front shock absorption mechanism and the rear shock absorption mechanism, respectively.

8. The two-wheeled vehicle with a shock-absorbing structure according to claim 7, characterized in that, The frame includes a pedal and a connecting arm rotatably connected to the front side of the pedal. A vertical pole is connected to the upper end of the connecting arm, and a handle is provided at the top of the vertical pole. The front shock absorption mechanism is located at the bottom of the connecting arm, and the rear shock absorption mechanism is located at the rear of the pedal.

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