Stepping driving device

Abstract

A stepping driving device comprises a main support, a driving rod, a stabilizing rod, a driving shaft, a stabilizing shaft, a pedal, a one-way clutch, a transmission and a restorer, the stabilizing shaft is installed on the main support, the stabilizing rod is rotatably connected with the stabilizing shaft and the pedal, the one-way clutch is installed on the driving shaft, and an outer ring of the one-way clutch is fixed to one end of the driving rod. The other end of the driving rod is rotationally connected with a pedal; the four-quadrilateral electric bicycle is small in size and low in gravity center, and drives a bicycle, a tricycle, a pedal boat, a body builder, a generator and the like by means of the gravity of the four-quadrilateral electric bicycle within the highest driving efficiency interval.

Description

Technical Field

[0001] The utility model relates to a driving device, in particular to a step driving device. Background Art

[0002] The existing stepping drive device, application number: CN201721458744.3 discloses a "ratchet-driven stepping vehicle", which is prone to shaking when driven by its own gravity, and has poor human-machine efficiency. Summary of the invention

[0003] The utility model aims to provide a stepping drive device with small volume, simple structure, light weight and ergonomics. A movable quadrilateral structure is formed between the pedal and the main bracket, and the shaking amplitude is small when stepped on.

[0004] The technical scheme of the utility model is: a stepping drive device, comprising a main bracket, a driving rod, a stabilizing rod, a driving shaft, a stabilizing shaft, a pedal, a one-way clutch, a transmission and a resetter, the stabilizing shaft is installed on the main bracket, the stabilizing rod is rotatably connected to the stabilizing shaft and the pedal, the one-way clutch is installed on the driving shaft, the outer ring of the one-way clutch is fixed to one end of the driving rod, the other end of the driving rod is rotatably connected to the pedal, and the driving shaft is connected to the transmission; the main bracket, the driving rod, the stabilizing rod and the pedal form two or four quadrilateral structures, the one-way clutch is a one-way needle bearing or a one-way ball bearing or a one-way ratchet, the pedal is provided with a retractable switch, the rear stage of the transmission is provided with one or two driving wheels, which together with the steering wheel form a two-wheeled, three-wheeled or four-wheeled vehicle, the resetter is arranged between the pedal and the main bracket, the two-wheeled, three-wheeled or four-wheeled vehicle is a folding structure, and the two-wheeled, three-wheeled or four-wheeled vehicle is provided with a power-assisting motor.

[0005] The beneficial effects of the utility model are as follows: the utility model has a small volume and a low center of gravity, and utilizes its own gravity to drive a bicycle, a tricycle, a pedal boat, a fitness machine, a generator, etc. in the range of highest driving efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0007] Figure 1 The utility model is a schematic diagram of the exploded structure of a step driving device.

[0008] Figure 2 The utility model is a schematic diagram of the exploded structure of a step structure.

[0009] Figure 3 It is a perspective structural schematic diagram of the first preferred embodiment of the utility model.

[0010] Figure 4 It is a perspective structural schematic diagram of the second preferred embodiment of the utility model.

[0011] Description of reference numerals: 1. main bracket, 2. left pedal, 3. right pedal, 4. cover plate, 5. drive rod, 6. stabilizer rod, 7. rivet, 8. rivet, 9. spring, 10. spring, 11. stabilizer shaft, 12. drive shaft, 13. output shaft, 14. gear, 15. gear, 16. sprocket, 17. drive rod, 18. stabilizer rod, 19. rivet, 20. rivet, 21. spring, 22. spring, 23. adjustment handle, 24. cam, 25. slider, 26. slot, 27. slider, 28. slot, 30. pull rod, 31. drive rod, 32. stabilizer rod, 33. drive rod, 34. stabilizer rod, 35. nut, 36. screw rod, 37. nut, 38. Spring, 39. Buffer pad, 40. Buffer pad, 41. Step drive device, 42. Folding hinge, 43. Triangle bracket, 44. Chain, 47. Step drive device, 48. Step structure, 49. Bracket, 50. Folding hinge. DETAILED DESCRIPTION

[0012] exist Figure 1In the embodiment, the upper end of the driving rod 5 is rotatably connected to the U-shaped bracket at the rear of the left pedal 2 by a rivet 7, and the two ends of the spring 9 are stuck in the corresponding holes of the driving rod 5 and the left pedal 2 after passing through the rivet 7. The upper end of the stabilizing rod 6 is rotatably connected to the U-shaped bracket in the middle of the left pedal 2 by a rivet 8, and the two ends of the spring 10 are stuck in the corresponding holes of the stabilizing rod 6 and the left pedal 2 after passing through the rivet 8. The upper end of the driving rod 17 is rotatably connected to the U-shaped bracket at the rear of the right pedal 3 by a rivet 19, and the two ends of the spring 21 are stuck in the corresponding holes of the driving rod 17 and the right pedal 3 after passing through the rivet 19. The upper end of the stabilizing rod 18 is rotatably connected to the U-shaped bracket in the middle of the right pedal 3 by a rivet 20, and the two ends of the spring 22 are stuck in the corresponding holes of the stabilizing rod 18 and the right pedal 3 after passing through the rivet 20; the middle part of the stabilizing shaft 11 is fixed in the first hole at the front end of the main bracket 1 integrated with the shell, and the driving shaft 12 passes through The second hole at the front end of the main bracket 1 and the bearings on both sides of the gear 14 are fixed to the main bracket 1, and the gear 14 is fixed to the middle of the drive shaft 12. The output shaft 13 passes through the hole in the middle of the main bracket 1 and is fixed to the main bracket 1 by the bearings on both sides. The gear 15 installed in the main bracket 1 is fixed to the output shaft 13, and its small teeth match the large teeth of the gear 14. The lower ends of the stabilizer bar 6 and the stabilizer bar 18 are respectively rotatably connected to the left and right ends of the stabilizer shaft 11 with bearings and blocked by retaining springs (nuts can also be used). The one-way needle bearings fixed to the lower ends of the drive rod 5 and the drive rod 17 are respectively sleeved on the left and right ends of the drive shaft 12 located outside the main bracket 1 and blocked by retaining springs. The sprocket 16 is fixed to the right end of the output shaft 13 located outside the main bracket 1. Gears or pulleys can also be installed on the output shaft 13 to output power; step on the left pedal 2 with your foot Or on the right pedal 3, the force drives the drive shaft 12 to rotate through the one-way needle bearing at the lower end of the drive rod 5 or the drive rod 17, and drives the output shaft 13 and the sprocket 16 to rotate through the gear 14 and the gear 15 of the transmission; the retractable switch structure of the pedal is as follows: the card slot 26 and the card slot 28 are respectively fixed in the main bracket 1 and located on the upper part of the stabilizing shaft 11, the slider 25 and the slider 27 are respectively covered with spiral springs and placed in the card slot 26 and the card slot 28 and can slide left and right, the left and right ends of the symmetrical cam 24 are pressed against the right end of the slider 25 and the left end of the slider 27, the adjusting handle 23 passes through the hole at the upper front end of the main bracket 1, and its lower end is fixed in the middle hole of the cam 24, and the upper part of the adjusting handle 23 is blocked by a retaining spring to prevent sliding, The cover plate 4 is fixed to the main bracket 1 with screws, and the left pedal 2 and the right pedal 3 are stepped on at the same time, and the adjusting handle 23 is rotated counterclockwise by ninety degrees. The cam 24 drives the right end of the slider 25 and the slider 27 to slide to the left and right ends respectively and get stuck in the corresponding holes at the lower ends of the stabilizing rod 6 and the stabilizing rod 18, so that the left pedal 2 and the right pedal 3 stop rotating. The adjusting handle 23 is rotated clockwise by ninety degrees. After the sliders 25 and 27 are retracted into the main bracket 1 under the action of the spring, the left pedal 2 and the right pedal 3 can rotate freely. The resetter includes springs 9, 10, 21 and 22. A spring can also be set between the stabilizing rod 6 and the stabilizing rod 18 and the main bracket 1. The cover plate 4 can also be integrated with the main bracket 1 and replaced by a rectangular tube.

[0013] exist Figure 2 In the embodiment, the lower end of the driving rod 31 is sleeved on the upper left end of the pulling rod 30, and the screw rod 36 passes through the hole on the upper part of the spring 38 and the corresponding holes of the driving rod 31 and the pulling rod 30, and then the two ends are fixed with nuts 35 and nuts 37 respectively after adding balls. The nuts 35 and nuts 37 serve as the inner rings of the ball bearings, and the grooves on both sides of the driving rod 31 serve as the outer rings of the ball bearings. The lower end of the stabilizing rod 32, the upper end of the driving rod 33 and the upper end of the stabilizing rod 34 are rotatably connected with the holes corresponding to the pulling rod 30 in the same manner as the above-mentioned connection manner. The 7 teeth corresponding to the lower end of the driving rod 31 and the upper end of the driving rod 33 are meshed, and the 7 teeth corresponding to the lower end of the stabilizing rod 32 and the upper end of the stabilizing rod 34 are meshed. The buffer pads 39 and 40 made of rubber are respectively fixed in the grooves of the stabilizing rod 32 and the stabilizing rod 34, and the upper ends of the driving rod 31 and the stabilizing rod 32 are respectively rotatably connected as shown in the figure. Figure 1 The pedal shown in the figure, the one-way needle bearing at the lower end of the driving rod 33 and the lower end of the stabilizing rod 34 are respectively rotatably connected as shown in the figure. Figure 1 The drive shaft and stabilizer shaft are similar in structure and are used in Figure 1 The transmission shown has a reversing gear added therein, and the transmission can also be rotated horizontally 180 degrees as a whole and then the drive rod and the stabilizer bar can be interchanged and installed.

[0014] exist Figure 3 In Figure 1 The front end of the step driving device 41 of the structure shown is welded to the rear end of the folding hinge 42, and the rear end of the step driving device 41 is welded to the corresponding position of the triangular bracket 43. The chain 44 for driving the wheel is installed on the sprocket of the step driving device 41. The two-wheeled bicycle can be folded after loosening the folding hinge at the bottom of the front handlebar and the handle on the side of the folding hinge 42; the folding hinge at the bottom of the front handlebar can also be cancelled, and the folding hinge 42 can be moved forward and replaced with a scooter folding hinge.

[0015] exist Figure 4 In Figure 1 The front end of the housing of the stepping drive device 47 with similar structure as shown is welded to the rear end of the folding hinge 50, as shown in FIG. Figure 2 The step structure 48 shown is rotatably connected to the driving shaft and the stabilizing shaft of the step driving device 47, the front end of the bracket 49 is welded to the outer shell of the step driving device 47, and the rear end of the bracket 49 is rotatably connected to the driving shaft of the rear wheel. The bevel gears installed on the driving shaft of the step driving device 47 and the driving shaft of the rear wheel are meshed with the bevel gears at both ends of the connecting shaft, so that the power of the output shaft is transmitted to the rear wheel. The transmission consists of the above two groups of bevel gears with a total of two speed increase levels of 1:2 and 1:3; the pedals of the step structure 48 are folded up, and the handle on the lower side of the folding hinge 50 and the lower part of the front handlebar of the three-wheeled self-driving vehicle are loosened and folded up.

[0016] The bearings shown in the above figures can be needle bearings, ball bearings or copper sleeve bearings, etc. Figure 1The middle main support, driving rod, stabilizing rod and pedal form two movable quadrilateral structures. Figure 1 The middle cover plate 4 can eliminate the need for an integrated housing. Figure 2 The middle main support, driving rod, stabilizing rod and pedals plus the pull rod form two movable quadrilateral structures on one side, and two symmetrical quadrilateral structures on the other side form four quadrilateral structures; the pedals can be driven by the user's own gravity or by the thigh power while lying down, and the lengths between the axes of the stabilizing rod and the driving rod can be the same, or the length of the stabilizing rod can be slightly shorter than that of the driving rod; Figure 3 and Figure 4 The bicycle can be equipped with a seat cushion that is easily removable for long-distance travel, or an assist motor can be added to make climbing easier. The bicycle can be folded and loaded with a backpack to be used as a travel case. The resetter can also adopt a cable or gear set structure.

[0017] The above description is a preferred embodiment of the present invention and is not intended to limit the scope of protection.

Claims

1. A stepping drive device, comprising a main support, a driving rod, a stabilizing rod, a driving shaft, a stabilizing shaft, a pedal, a one-way clutch, a transmission and a resetter, characterized in that: The stabilizing shaft is installed on the main bracket, the stabilizing rod is rotatably connected to the stabilizing shaft and the pedal, the one-way clutch is installed on the driving shaft, the outer ring of the one-way clutch is fixed to one end of the driving rod, the other end of the driving rod is rotatably connected to the pedal, and the driving shaft is connected to the transmission.

2. The stepping drive device according to claim 1, characterized in that: The main support, the driving rod, the stabilizing rod and the pedal form two or four quadrilateral structures.

3. The stepping drive device according to claim 1, characterized in that: The one-way clutch is a one-way needle bearing or a one-way ball bearing or a one-way ratchet.

4. The stepping drive device according to claim 1, characterized in that: The pedal is provided with a retractable switch.

5. The stepping drive device according to claim 1, characterized in that: The transmission rear stage is provided with one or two driving wheels, which together with the steering wheels form a two-wheel, three-wheel or four-wheel vehicle.

6. The stepping drive device according to claim 1, characterized in that: The restorer is arranged between the pedal and the main bracket.

7. The stepping drive device according to claim 5, characterized in that: The two-wheeled, three-wheeled or four-wheeled vehicle is of a folding structure.

8. The stepping drive device according to claim 5, characterized in that: The two-wheeled, three-wheeled or four-wheeled vehicle is provided with a power-assisting motor.

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