Novel off-road bicycle capable of saving manpower

Abstract

The utility model relates to the technical field of bicycles, and discloses a novel manpower-saving cross-country bicycle which comprises a bicycle frame, a driving assembly used for moving the bicycle frame is installed on the side face of the bicycle frame, a driving speed change assembly used for limiting and converting the driving assembly is installed at the top of the bicycle frame, and a straight cylinder is fixedly installed on the side face of the bicycle frame. A rack is fixedly installed on the outer surface of a sliding rod, a straight cylinder is arranged in the sliding rod, a cylinder is connected into the straight cylinder in a sliding mode, the tooth surface of a gear is meshed with the tooth surface of the rack, and a limiting assembly used for rotating the rotating rod is installed in the fixing shell. A limiting assembly is used for driving a rotating rod installed in a fixing shell to rotate, the rotating rod can drive a gear to rotate when rotating and drive a fixing rod and a cylinder to ascend, the cylinder can adjust a saddle, and when the bicycle is on a bumpy road section, due to the fact that the gear is clamped on the outer surface of a rack, the saddle can be prevented from descending; therefore, the safety of a rider on a bumpy road section can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bicycles, in particular to a novel off-road bicycle which saves manpower. Background Art

[0002] The new off-road bicycles that save manpower in current life usually refer to those bicycles that use advanced technology to improve riding efficiency and reduce the burden on riders. Modern off-road bicycles are usually equipped with advanced suspension systems, such as air pressure or oil pressure suspension. These systems can absorb the impact of the road and reduce the bumps when the rider rides on rugged terrain, thereby saving physical energy.

[0003] Existing labor-saving new off-road bicycles require the seat height to be adjusted for better riding by the rider. However, since they are used in an off-road environment, the seat may fall on bumpy roads. The seat is the main part of the body in contact with the rider during riding. If the seat falls off, the rider will not be able to maintain the correct riding posture, which will reduce riding comfort. Utility Model Content

[0004] The purpose of the present invention is to provide a new off-road bicycle that saves manpower in order to solve the above problems. The gears and racks are provided to perform stable adjustment and limiting functions, thereby solving the problems mentioned in the background technology.

[0005] In order to solve the above problems, the present invention provides a technical solution:

[0006] The top of the bicycle frame is fixedly provided with a wheel hub, and the top of the bicycle frame is connected with a wheel hub, and the top of the bicycle frame is connected with a wheel hub, and the top of the bicycle frame is connected with a wheel hub.

[0007] As a preferred solution of the present invention, the limiting assembly includes a worm wheel, the inner wall of the worm wheel is fixedly sleeved on the outer surface of the rotating rod, the internal rotation of the fixed shell is connected to a worm, the outer surface of the worm is engaged with the outer surface of the worm wheel, one end of the worm is fixedly installed with a shaft, and one end of the shaft passes through the interior of the fixed shell and is fixedly installed with a knob.

[0008] As a preferred solution of the present invention, a limit clamp is movably sleeved on the outer surface of the cylinder, and bolts are movably connected internally at both ends of the limit clamp. A nut is threadedly connected to the outer surface of the bolt, and one end of the nut is tightly fitted to the side of the limit clamp.

[0009] As a preferred solution of the present invention, two fixed blocks are fixedly installed on the inner wall of the straight cylinder, and two sliding grooves are provided on the outer surface of the sliding rod. The inner walls of the two sliding rods are respectively slidably connected to the outer surfaces of the corresponding fixed blocks.

[0010] As a preferred solution of the present invention, the drive assembly includes a front frame, one side of the front frame is fixedly mounted on the side of the frame, the front wheels are rotatably connected on both sides of the interior of the front frame, and a rear frame is fixedly mounted on one side of the frame, and the rear wheels are rotatably connected on both sides of the interior of the rear frame.

[0011] As a preferred solution of the present invention, the drive and speed change assembly includes a brake device, the side of the brake device is fixedly mounted on the top of the frame, a speed change component is fixedly mounted on the top of the frame, a drive device is mounted on the bottom of the frame, pedals are fixedly mounted on both sides of the drive device, and a speed change plate is fixedly mounted at the connection between the rear frame and the rear wheel.

[0012] The beneficial effects of the present invention are as follows: a sliding rod is arranged inside the straight cylinder, and a rack is fixedly installed on the outer surface of the sliding rod. A limiting assembly is used to drive a rotating rod installed inside the fixed shell to rotate. The rotating rod can drive the gear to rotate when it rotates. The tooth surface of the gear drives the rack and the sliding rod to slide inside the straight cylinder, and drives the fixed rod and the cylinder to rise. The cylinder can adjust the seat. When on a bumpy road section, the gear is stuck on the outer surface of the rack to prevent the seat from falling, thereby increasing the safety of the rider on bumpy roads. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] For ease of explanation, the present invention is described in detail with reference to the following specific implementations and accompanying drawings.

[0014] Figure 1 It is a schematic structural diagram of the utility model as a whole;

[0015] Figure 2 This is a schematic structural diagram of the straight cylinder, the round cylinder and the fixed rod of the utility model;

[0016] Figure 3 It is a schematic cross-sectional structure diagram of the straight cylinder, the round cylinder and the fixed rod of the utility model;

[0017] Figure 4 This is a schematic structural diagram of the cylinder, limit clamp and bolt of the utility model;

[0018] Figure 5 This is a schematic structural diagram of the limit assembly, gear and rotating rod of the utility model;

[0019] Figure 6 It is a structural schematic diagram of the sliding rod and rack of the utility model.

[0020] In the figure: 1. frame; 2. seat; 3. straight cylinder; 4. drive assembly; 41. front wheel; 42. front frame; 43. rear frame; 44. rear wheel; 5. drive speed change assembly; 51. brake device; 52. speed change member; 53. pedal; 54. drive device; 55. speed change plate; 6. fixed shell; 7. cylinder; 8. fixed rod; 9. slide rod; 10. fixed block; 11. limit clamp; 12. nut; 13. bolt; 14. rack; 15. through groove; 16. rotating rod; 17. gear; 18. limit assembly; 181. worm; 182. worm wheel; 183. shaft; 184. knob; 19. slide groove. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0022] Example

[0023] See also Figures 1-6 The utility model provides a technical solution: a new off-road bicycle that saves manpower, comprising a frame 1, a driving assembly 4 for moving the frame 1 is installed on the side of the frame 1, and a driving speed change assembly 5 for limiting and converting the driving assembly 4 is installed on the top of the frame 1. A straight cylinder 3 is fixedly installed on the side of the frame 1, and a cylinder 7 is slidably connected inside the straight cylinder 3. A fixed rod 8 is movably connected to the top of the cylinder 7, and a seat 2 is fixedly installed on the top of the fixed rod 8. A slide rod 9 is slidably connected inside the straight cylinder 3, and the top of the slide rod 9 is fixedly installed on the bottom end of the cylinder 7.

[0024] Furthermore, the limiting assembly 18 includes a worm gear 182, the inner wall of the worm gear 182 is fixedly sleeved on the outer surface of the rotating rod 16, the internal rotation of the fixed shell 6 is connected to the worm 181, the outer surface of the worm 181 is engaged with the outer surface of the worm gear 182, one end of the worm 181 is fixedly installed with a shaft 183, one end of the shaft 183 passes through the interior of the fixed shell 6 and is fixedly installed with a knob 184, the worm gear 182 and the worm 181 mainly play a role in limiting the gear 17.

[0025] Furthermore, a limit clamp 11 is movably sleeved on the outer surface of the cylinder 7, and bolts 13 are movably connected internally at both ends of the limit clamp 11. A nut 12 is threadedly connected to the outer surface of the bolt 13, and one end of the nut 12 fits tightly to the side of the limit clamp 11. The setting of the limit clamp 11 enables the seat 2 to be replaced.

[0026] Furthermore, two fixed blocks 10 are fixedly installed on the inner wall of the straight cylinder 3, and two sliding grooves 19 are provided on the outer surface of the slide rod 9. The inner walls of the two slide rods 9 are respectively slidably connected to the outer surfaces of the corresponding fixed blocks 10. When the slide rod 9 moves, the fixed blocks 10 play a straight-up role to prevent the slide rod 9 from rotating.

[0027] Furthermore, the drive assembly 4 includes a front frame 42, one side of the front frame 42 is fixedly mounted on the side of the frame 1, and the front wheels 41 are rotatably connected on both sides of the interior of the front frame 42; a rear frame 43 is fixedly mounted on one side of the frame 1, and the rear wheels 44 are rotatably connected on both sides of the interior of the rear frame 43.

[0028] Furthermore, the drive transmission assembly 5 includes a brake device 51, the side of the brake device 51 is fixedly mounted on the top of the frame 1, a transmission part 52 is fixedly mounted on the top of the frame 1, a drive device 54 is mounted on the bottom of the frame 1, pedals 53 are fixedly mounted on both sides of the drive device 54, and a transmission disc 55 is fixedly mounted at the connection between the rear frame 43 and the rear wheel 44.

[0029] In summary, when using the device, first, when the seat 2 needs to be replaced, loosen the nut 12 and take the bolt 13 out of the inside of the limit clamp 11. Then take out the fixing rod 8 and put the new fixing rod 8 into the cylinder 7. Tighten the nut 12 to clamp the limit clamp 11 to prevent the fixing rod 8 and the seat 2 from falling off from the inside of the cylinder 7. When adjustment is needed, turn the knob 184 to drive the shaft 183 to move. The shaft 183 drives the worm 181 installed at one end. The worm 18 1 drives the worm gear 182 installed on the outer surface to rotate, and the worm gear 182 drives the rotating rod 16 installed inside to rotate, and the rotating rod 16 can drive the gear 17 sleeved on the outer surface to rotate, and the gear 17 moves the rack 14 inside the straight cylinder 3, and the rack 14 acts on the slide rod 9, and the slide rod 9 can slide inside the straight cylinder 3, and finally can drive the cylinder 7 installed on the top of the slide rod 9 to move, and the cylinder 7 can drive the fixed rod 8 installed inside to move, so that the fixed rod 8 can drive the seat 2 to be adjusted.

[0030] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A new off-road bicycle that saves manpower, comprising a frame (1), characterized in that: A driving assembly (4) for moving the frame (1) is installed on the side of the frame (1), a driving speed change assembly (5) for limiting and converting the driving assembly (4) is installed on the top of the frame (1), a straight cylinder (3) is fixedly installed on the side of the frame (1), a cylinder (7) is slidably connected inside the straight cylinder (3), a fixed rod (8) is movably connected to the top of the cylinder (7), a seat (2) is fixedly installed on the top of the fixed rod (8), a sliding rod (9) is slidably connected inside the straight cylinder (3), and the top of the sliding rod (9) is fixedly installed on the cylinder ( 7), the outer surface of the straight cylinder (3) is fixedly sleeved with a fixed shell (6), the outer surface of the straight cylinder (3) is provided with a through groove (15) inside the fixed shell (6), the outer surface of the straight cylinder (3) is fixedly installed with a rack (14), the inner wall of the fixed shell (6) is rotatably connected with a rotating rod (16), the outer surface of the rotating rod (16) is fixedly sleeved with a gear (17), the tooth surface of the gear (17) and the tooth surface of the rack (14) are meshed with each other, and a limit assembly (18) for rotating the rotating rod (16) is installed inside the fixed shell (6).

2. A new type of off-road bicycle that saves manpower according to claim 1, characterized in that: The limiting assembly (18) includes a worm wheel (182), the inner wall of the worm wheel (182) is fixedly sleeved on the outer surface of the rotating rod (16), the interior of the fixed housing (6) is rotatably connected to a worm (181), the outer surface of the worm (181) is engaged with the outer surface of the worm wheel (182), one end of the worm (181) is fixedly mounted with a shaft (183), and one end of the shaft (183) passes through the interior of the fixed housing (6) and is fixedly mounted with a knob (184).

3. A new type of off-road bicycle that saves manpower according to claim 1, characterized in that: The outer surface of the cylinder (7) is movably sleeved with a limit clamp (11), and the two ends of the limit clamp (11) are internally movably connected with bolts (13), and the outer surface of the bolt (13) is threadedly connected with a nut (12), and one end of the nut (12) is tightly fitted on the side of the limit clamp (11).

4. A new type of off-road bicycle that saves manpower according to claim 1, characterized in that: Two fixed blocks (10) are fixedly installed on the inner wall of the straight cylinder (3), and two sliding grooves (19) are opened on the outer surface of the sliding rod (9). The inner walls of the two sliding rods (9) are respectively slidably connected to the outer surfaces of the corresponding fixed blocks (10).

5. A new type of off-road bicycle that saves manpower according to claim 1, characterized in that: The driving assembly (4) comprises a front frame (42), one side of the front frame (42) is fixedly mounted on the side of the frame (1), and the interior of the front frame (42) is rotatably connected to the front wheels (41) on both sides, and a rear frame (43) is fixedly mounted on one side of the frame (1), and the interior of the rear frame (43) is rotatably connected to the rear wheels (44) on both sides.

6. A new type of off-road bicycle that saves manpower according to claim 5, characterized in that: The driving speed-changing assembly (5) comprises a brake device (51), the side of the brake device (51) is fixedly mounted on the top of the vehicle frame (1), a speed-changing component (52) is fixedly mounted on the top of the vehicle frame (1), a driving device (54) is mounted on the bottom of the vehicle frame (1), pedals (53) are fixedly mounted on both sides of the driving device (54), and a speed-changing disc (55) is fixedly mounted at the connection between the rear frame (43) and the rear wheel (44).

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