A linkage structure of rear wheels of a tricycle

Abstract

This utility model relates to a rear two-wheel linkage structure for a tricycle, belonging to the technical field of tricycle scooters. The rear two-wheel linkage structure of the tricycle includes a frame and two rear fork assemblies, one end of which is movably connected to the frame via a damping box. The damping box contains a reduction gear. The rear two-wheel linkage structure of the tricycle, through the meshing damping between the bevel gear and the bevel wheel, can achieve shock absorption of the rear fork frame, thereby improving the feedback when the tricycle encounters bumpy road sections during its movement.

Description

Technical Field

[0001] This utility model relates to a linkage structure for the rear two wheels of a tricycle, belonging to the technical field of tricycle scooters. Background Technology

[0002] Three-wheeled electric scooters are currently a very popular and practical category of personal mobility tools for adults. Compared with two-wheeled electric scooters, three-wheeled electric scooters provide riders with a wide support surface through the front-one-rear-two layout. This makes riders extremely stable when starting, braking, traveling at low speeds and stopping in place, greatly reducing the risk of falling due to loss of balance. In related technologies, when a three-wheeled electric scooter travels on a bumpy road, due to the high rigidity of its three-wheeled structure, the entire scooter will bounce upwards as a whole when encountering a bump, rather than the front and rear wheels responding sequentially as in a two-wheeled vehicle. This can cause discomfort to the rider. In addition, after a long period of riding on bumpy roads, the constant impact can cause slight deformation of the two rear wheels if the rear fork structure at the rear of the scooter is not strong enough, thus accelerating tire wear. Utility Model Content To solve the above-mentioned technical problems, this utility model provides a linkage structure for the rear two wheels of a tricycle, thereby solving the problems in the background art where riding a tricycle electric scooter for a long time on bumpy roads can cause discomfort to the rider, and where, under long-term impact on bumpy roads, if the rear fork structure at the rear of the scooter is not strong enough, it may cause slight deformation of the two rear wheels, which will aggravate tire wear. The technical solution adopted by this utility model to solve its technical problem is: A rear two-wheel linkage structure for a tricycle, the rear two-wheel linkage structure of the tricycle includes: a frame and rear fork assemblies, the number of rear fork assemblies is two, and one end of each rear fork assembly is movably connected to the frame through a damping box; The damping box contains a deceleration component that can improve the feedback of the rear two-wheel linkage structure of the tricycle when encountering bumpy road sections during the movement of the tricycle scooter. The damping box has a damping hole inside, and the rear fork assembly is movably connected to the damping box at the position of the damping hole through a deceleration assembly.

[0003] Preferably, the rear fork assembly includes a rear fork frame, one end of which forms a bevel gear shaft hole, the rear fork frame is connected to a reduction assembly at the location where the bevel gear shaft hole is formed, and a rear wheel is movably mounted on the other end of the rear fork frame.

[0004] Preferably, the deceleration assembly includes a parapet wheel shaft and a bevel gear shaft. The two ends of the parapet wheel shaft are rotatably mounted inside the damping box via parapet wheel bearings, and two parapet wheels are symmetrically distributed and mounted on the parapet wheel shaft. One end of the bevel gear shaft is rotatably mounted inside the damping hole formed by the damping box via a bevel gear bearing, and the other end of the bevel gear shaft is rotatably mounted inside the bevel gear shaft hole formed on one side of the rear fork via a bevel gear bearing. A bevel gear is mounted on the bevel gear shaft, and the outer side of the bevel gear meshes with the outer side of the bevel cone wheel.

[0005] Preferably, one end of the bevel gear shaft is provided with a threaded section, and a threaded groove is formed at the center of the bevel gear shaft.

[0006] Preferably, the frame has a groove inside, and the inner wall of the groove has a positioning hole.

[0007] Compared with the prior art, the beneficial effects of this utility model are as follows: The rear two-wheel linkage structure of the tricycle described above has the following advantages: It is equipped with a frame and a rear fork assembly. One end of the rear fork assembly is movably connected to the frame through a damping box, and a reduction component is installed inside the damping box. The deceleration assembly includes a parapet wheel shaft and a bevel gear shaft. The two ends of the parapet wheel shaft are rotatably mounted inside the damping box via parapet wheel bearings. Two parapet wheels are symmetrically distributed and mounted on the parapet wheel shaft. One end of the bevel gear shaft is rotatably mounted inside the damping hole formed by the damping box via a bevel gear bearing, and the other end of the bevel gear shaft is rotatably mounted inside the bevel gear shaft hole formed on one side of the rear fork via a bevel gear bearing. A bevel gear is mounted on the bevel gear shaft, and the outer side of the bevel gear meshes with the outer side of the bevel cone wheel. When the rear wheel travels on a bumpy road, it will vibrate up and down. During this vibration, the bevel gear shaft will rotate. Since the outer side of the bevel gear mounted on the bevel gear shaft meshes with the outer side of the bevel wheel set on the bevel wheel shaft, the meshing damping between the bevel wheel and the bevel gear can dampen the vibration of the rear fork frame when the bevel gear shaft rotates, thereby improving the feedback of the tricycle when encountering bumpy roads. Attached Figure Description

[0008] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0009] Figure 1 This is a schematic diagram of the linkage structure of the rear two wheels of a tricycle according to the present invention.

[0010] Figure 2 This is an exploded disassembly diagram of the rear two-wheel linkage structure of a tricycle according to the present invention.

[0011] In the diagram: 1-frame, 2-damping box, 3-rear fork, 4-rear wheel, 5-positioning hole, 6-box groove, 7-damping hole, 8-bevel cone axle, 9-bevel cone bearing, 10-bevel gear, 11-bevel gear shaft, 12-bevel gear bearing, 13-threaded section, 14-bevel gear shaft hole. Detailed Implementation

[0012] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0013] Please see Figure 1 and Figure 2 This utility model provides a technical solution: A rear two-wheel linkage structure for a tricycle, the rear two-wheel linkage structure of the tricycle comprising: The frame 1 and the rear fork assembly, there are two rear fork assemblies, and one end of each rear fork assembly is movably connected to the frame 1 through a damping box 2; the damping box 2 is equipped with a deceleration component; the deceleration component inside the damping box 2 can improve the feedback of the rear two-wheel linkage structure of the tricycle when encountering bumpy road sections during the movement of the tricycle scooter. The damping box 2 has a damping hole 7 inside, and the rear fork assembly is movably connected to the damping box 2 at the position of the damping hole 7 through the deceleration assembly. Please see Figure 1 and Figure 2 In one embodiment of the present invention, the rear fork assembly includes a rear fork frame 3, one end of which forms a bevel gear shaft hole 14, the rear fork frame 3 is connected to a reduction assembly at the position where the bevel gear shaft hole 14 is formed, and a rear wheel 4 is movably mounted on the other end of the rear fork frame 3. When the tricycle is moving, the rear wheel 4, which is mounted at one end of the rear fork 3, rolls, while the bevel gear shaft hole 14 formed at one end of the rear fork 3 achieves a damping effect through the deceleration assembly, which is used to provide feedback on the tricycle when encountering bumpy road sections during its movement. Specifically, the deceleration assembly includes a parapet wheel shaft 8 and a bevel gear shaft 11. The two ends of the parapet wheel shaft 8 are rotatably mounted inside the damping box 2 via parapet wheel bearings 9, and two parapet wheel shafts are symmetrically distributed on the parapet wheel shaft 8. One end of the bevel gear shaft 11 is rotatably mounted inside the damping hole 7 formed in the damping box 2 via a bevel gear bearing 12, and the other end of the bevel gear shaft 11 is rotatably mounted inside the bevel gear shaft hole 14 formed on one side of the rear fork 3 via a bevel gear bearing 12. A bevel gear 10 is also mounted on the bevel gear shaft 11, and the outer side of the bevel gear 10 located on the bevel gear shaft 11 meshes with the outer side of the parapet wheel shaft 8. In the embodiments of this utility model, when the tricycle is moving, the rear wheel 4, which is movably mounted at one end of the rear fork 3, also rolls; at the same time, when the rear wheel 4 travels to a bumpy section, it will shake up and down. During the shaking, the bevel gear shaft 11 will rotate. Since the outer side of the bevel gear 10 mounted on the bevel gear shaft 11 meshes with the outer side of the umbrella cone wheel set on the umbrella cone wheel shaft 8, when the bevel gear shaft 11 rotates, the meshing damping between the umbrella cone wheel and the bevel gear 10 can resist the shaking of the rear fork 3, thereby improving the feedback of the tricycle when encountering bumpy sections during its travel. Specifically, one end of the bevel gear shaft 11 is provided with a threaded section 13, and a threaded groove is formed at the center of the bevel gear 10. By cooperating with the threaded groove formed at the center of the bevel gear 10 and the threaded section 13 provided at one end of the bevel gear shaft 11, quick disassembly and installation between the bevel gear 10 and the bevel gear shaft 11 can be achieved. Please see Figure 2 In one embodiment of the present invention, a box groove 6 is formed inside the frame 1, and a positioning hole 5 is provided on the inner wall of the box groove 6; the size of the damping box 2 is adapted to the size of the box groove 6 formed inside the frame 1, and a positioning hole 5 is provided on the surface of the damping box 2. In an embodiment of this utility model, when the damping box 2 is assembled with the frame 1, one end of the damping box 2 is inserted into the box groove 6 formed inside the frame 1, and the positioning hole 5 formed in the inner wall of the box groove 6 and the positioning hole 5 opened on the surface of the damping box 2 are simultaneously passed through the positioning hole 5 formed in the inner wall of the box groove 6 and the positioning hole 5 opened on the surface of the damping box 2 to achieve the installation and fixation between the damping box 2 and the frame 1. Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A linkage structure for the rear two wheels of a tricycle, characterized in that... include: The frame (1) and the rear fork assembly, there are two rear fork assemblies, and one end of each rear fork assembly is movably connected to the frame (1) through a damping box (2); The damping box (2) is equipped with a deceleration component that can improve the feedback of the rear two-wheel linkage structure of the tricycle when encountering bumpy road sections during the movement of the tricycle scooter. The damping box (2) has a damping hole (7) inside. The rear fork assembly is movably connected to the damping box (2) at the position of the damping hole (7) through the deceleration assembly.

2. The rear two-wheel linkage structure of the tricycle according to claim 1, characterized in that: The rear fork assembly includes a rear fork frame (3), one end of which forms a bevel gear shaft hole (14), the rear fork frame (3) is connected to a reduction assembly at the location where the bevel gear shaft hole (14) is formed, and a rear wheel (4) is movably mounted on the other end of the rear fork frame (3).

3. The rear two-wheel linkage structure of the tricycle according to claim 2, characterized in that: The deceleration assembly includes a parapet wheel shaft (8) and a bevel gear shaft (11). The two ends of the parapet wheel shaft (8) are rotatably mounted inside the damping box (2) through parapet wheel bearings (9). Two parapet wheels are symmetrically distributed on the parapet wheel shaft (8). One end of the bevel gear shaft (11) is rotatably mounted inside the damping hole (7) formed by the damping box (2) via the bevel gear bearing (12), and the other end of the bevel gear shaft (11) is rotatably mounted inside the bevel gear shaft hole (14) formed on one side of the rear fork frame (3) via the bevel gear bearing (12). A bevel gear (10) is mounted on the bevel gear shaft (11), and the outer side of the bevel gear (10) meshes with the outer side of the bevel cone wheel.

4. The rear two-wheel linkage structure of the tricycle according to claim 3, characterized in that: The bevel gear shaft (11) has a threaded section (13) at one end, and a threaded groove is formed at the center of the bevel gear (10).

5. The rear two-wheel linkage structure of the tricycle according to claim 1, characterized in that: The frame (1) has a groove (6) inside, and a positioning hole (5) is provided on the inner wall of the groove (6).

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