Front wheel damping structure of electric child tricycle

Abstract

The utility model relates to the field of baby carriage front wheel damping, and discloses a front wheel damping structure of an electric three-wheel baby carriage, which comprises a baby carriage front wheel, the baby carriage front wheel is rotatably arranged in a front wheel cover, the two sides of the front wheel cover are detachably provided with loading and unloading plates, the top surfaces of the loading and unloading plates are fixedly provided with connecting rods, and the connecting rods are fixedly connected with the front wheel cover. A hollow cylinder is slidably arranged at the top end of the connecting rod, a sealing hole is formed in the bottom end of the hollow cylinder, the connecting rod is slidably inserted into the sealing hole, and an elastic plate is fixed to the top end of the connecting rod. According to the utility model, the front wheel of the baby carriage can generate larger vibration in the running process, the front wheel of the baby carriage can jump up and down in the vibration process, the front wheel of the baby carriage which jumps upwards can drive the connecting rod to slide upwards in the hollow cylinder, the air in the hollow cylinder can be extruded due to the fact that the hollow cylinder is filled with the air, and the air in the hollow cylinder can be extruded due to the pressure of the air. And the moving distance of the connecting rod in the hollow cylinder is limited, and the damping effect on the baby carriage is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of front wheel shock absorption of a baby carriage, in particular to a front wheel shock absorption structure of an electric three-wheel baby carriage. Background Art

[0002] A baby carriage is a tool vehicle designed to facilitate outdoor activities for babies. There are various models. Generally, children aged 1 to 2 years old play with baby carriages, and children over 2 years old play with toy cars with wheels. Baby carriages can bring certain benefits to children's intellectual development and increase children's brain development.

[0003] According to the Chinese patent publication number: CN207657957U, a shock-absorbing folding baby stroller includes a front wheel, a front frame, a rear wheel, a rear frame and a seat cushion frame, and is characterized in that one end of the front frame is fixedly connected to the seat cushion frame, one end of the rear frame is connected to the front frame, one end of the seat cushion frame is connected to the rear frame through a shock-absorbing device, the shock-absorbing device includes a pin shaft, the pin shaft is fixedly set on the rear frame, a spring is sleeved on the pin shaft, a shock-absorbing kit is arranged on the outside of the spring, one end of the shock-absorbing kit is arranged on the end of the seat cushion frame, and the other end of the shock-absorbing kit is arranged on the rear frame, and the shock-absorbing kit forms a sealed space between the seat cushion frame and the rear frame.

[0004] In the above scheme, a spring is used to reduce shock to the baby stroller, but it still has the following disadvantages: the spring will accumulate restoring elastic force when compressed, and the accumulated restoring elastic force will reset the spring and repeat the above process many times, which will increase the vibration duration of the baby stroller and affect the shock-absorbing effect of the baby stroller. Utility Model Content

[0005] The purpose of the utility model is to provide a front wheel shock-absorbing structure of an electric three-wheeled baby carriage to solve the problem that the accumulated restoring elastic force will cause the spring to reset and repeat the above process many times, which will increase the vibration duration of the baby carriage and affect the shock-absorbing effect of the baby carriage.

[0006] In order to achieve the above-mentioned purpose of the utility model, the utility model adopts the following technical scheme: a front wheel shock absorption structure of an electric three-wheeled baby carriage, including a front wheel of the baby carriage, which is rotatably arranged inside a front wheel cover, and loading and unloading plates are detachably arranged on both sides of the front wheel cover, a connecting rod is fixed to the top surface of the loading and unloading plate, a hollow cylinder is slidably arranged on the top end of the connecting rod, a sealing hole is opened at the bottom end of the hollow cylinder, the sealing hole is slidably inserted with the connecting rod, an elastic plate is fixed to the top end of the connecting rod, the elastic plate is interference fit with the inside of the hollow cylinder, and the sealing hole is interference fit with the connecting rod.

[0007] Preferably, a rotating hole is opened on one side of the front wheel of the baby carriage, a central axis is rotatably inserted inside the rotating hole, a plurality of bearings are fixed on the central axis, the inner wall surface of the rotating hole is fixed to the surface of the outer ring of the bearing, positioning holes are respectively opened on both sides of the front wheel cover, and the central axis is fixedly inserted into the positioning hole.

[0008] Preferably, through holes are respectively provided on both sides of the loading and unloading plate, the loading and unloading plate is slidably inserted with the central axis, two loading and unloading holes are provided on the surface of the central axis, loading and unloading bolts are slidably inserted inside the through holes, one end of the loading and unloading bolt passes through the through holes and is slidably inserted with the loading and unloading holes, and one end of the loading and unloading bolt is threadedly connected with a nut.

[0009] Preferably, a fixing hole is opened on the surface of the hollow cylinder, an air valve is fixed inside the fixing hole, and a sealing cover is threadedly connected to the air valve.

[0010] Preferably, a damper is provided on the connecting rod.

[0011] Preferably, a shock-absorbing compression spring is surrounded on the surface of the connecting rod, one end of the shock-absorbing compression spring is fixed to the top surface of the loading and unloading plate, and the other end of the shock-absorbing compression spring is fixed to the bottom end of the damper.

[0012] Compared with the prior art, the front wheel shock absorbing structure of an electric three-wheeled baby carriage adopting the above technical solution has the following beneficial effects:

[0013] 1. The front wheel of the baby carriage is connected to the baby carriage through the top of the hollow cylinder. When the baby carriage is running on the ground, the front wheel of the baby carriage will roll on the ground. If the road surface is rough, the front wheel of the baby carriage will vibrate greatly during running. The front wheel of the baby carriage will jump up and down during the vibration. The jumping front wheel of the baby carriage will drive the connecting rod to slide upward inside the hollow cylinder. Since the inside of the hollow cylinder is full of air, when the elastic plate is pushed by the connecting rod to slide upward inside the hollow cylinder, the air inside the hollow cylinder can be squeezed. Due to the pressure of the gas, the moving distance of the connecting rod inside the hollow cylinder is limited, thereby increasing the shock absorption effect on the baby carriage.

[0014] Second, when the structure directly or indirectly connected to the loading and unloading plate is damaged, the staff will unscrew the nut from the loading and unloading bolt, and then pull out the loading and unloading bolt from the inside of the penetration hole to disassemble the loading and unloading plate from the central axis, and then disassemble and replace the loading and unloading plate and the device directly or indirectly connected to the loading and unloading plate, which increases the convenience of the staff to replace the damaged parts during quality inspection;

[0015] 3. The damper controls the shock absorption effect by hindering the vibration of the shock absorption compression spring. The damper can affect the hardness and softness of the shock absorption. The staff will add gas to the inside of the hollow tube through the valve mouth to prevent the shock absorption effect on the front wheel of the baby carriage from being affected by insufficient gas inside the hollow tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of an embodiment.

[0017] Figure 2 It is an exploded perspective schematic diagram of an embodiment.

[0018] Figure 3 It is a schematic diagram of the explosion of the hollow cylinder and the connecting rod in the embodiment.

[0019] Figure 4 for Figure 2 A schematic diagram of the enlarged local structure in the middle.

[0020] In the figure: 1. front wheel of the baby carriage; 2. front wheel cover; 3. loading and unloading plate; 4. connecting rod; 5. hollow cylinder; 6. sealing hole; 7. elastic plate; 8. rotating hole; 9. central axis; 10. positioning hole; 11. penetration hole; 12. loading and unloading bolt; 13. loading and unloading hole; 14. nut; 15. fixing hole; 16. valve; 17. sealing cover; 18. shock-absorbing compression spring; 19. damper. DETAILED DESCRIPTION

[0021] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0022] like Figure 1-Figure 3 As shown, a front wheel shock absorption structure of an electric three-wheeled baby carriage comprises a front wheel 1 of the baby carriage, which is rotatably arranged inside a front wheel cover 2, and loading and unloading plates 3 are detachably arranged on both sides of the front wheel cover 2, a connecting rod 4 is fixed to the top surface of the loading and unloading plate 3, a hollow cylinder 5 is slidably arranged on the top end of the connecting rod 4, a sealing hole 6 is opened at the bottom end of the hollow cylinder 5, the sealing hole 6 and the connecting rod 4 are slidably inserted, an elastic plate 7 is fixed to the top end of the connecting rod 4, the elastic plate 7 is interference fit with the inside of the hollow cylinder 5, and the sealing hole 6 is interference fit with the connecting rod 4.

[0023] During use, the front wheel 1 of the baby carriage is connected to the baby carriage through the top of the hollow cylinder 5. When the baby carriage is traveling on the ground, the front wheel 1 of the baby carriage will roll on the ground. If the road surface is rough, the front wheel 1 of the baby carriage will generate greater vibrations during driving. During the vibration, the front wheel 1 of the baby carriage will jump up and down. The upwardly jumping front wheel 1 of the baby carriage will drive the connecting rod 4 to slide upward inside the hollow cylinder 5. Since the interior of the hollow cylinder 5 is filled with air, when the elastic plate 7 is pushed by the connecting rod 4 to slide upward inside the hollow cylinder 5, the air inside the hollow cylinder 5 can be squeezed. Due to the pressure of the gas, the moving distance of the connecting rod 4 inside the hollow cylinder 5 is limited, thereby increasing the shock-absorbing effect on the baby carriage.

[0024] like Figure 2 and Figure 4 As shown, a rotating hole 8 is opened on one side of the front wheel 1 of the baby carriage, and a central shaft 9 is rotatably inserted inside the rotating hole 8. A number of bearings are fixed on the central shaft 9. The inner wall surface of the rotating hole 8 is fixed to the surface of the outer ring of the bearing. Positioning holes 10 are opened on both sides of the front wheel cover 2, and the central shaft 9 is fixedly inserted in the positioning hole 10. Penetration holes 11 are opened on both sides of the loading and unloading plate 3, and the loading and unloading plate 3 and the central shaft 9 are slidably inserted. Two loading and unloading holes 13 are opened on the surface of the central shaft 9, and a loading and unloading bolt 12 is slidably inserted inside the penetrating hole 11. One end of the loading and unloading bolt 12 passes through the penetrating hole 11 and is slidably inserted in the loading and unloading hole 13, and one end of the loading and unloading bolt 12 is threadedly connected with a nut 14.

[0025] During use, when the structure directly or indirectly connected to the loading and unloading plate 3 is damaged, the staff will unscrew the nut 14 from the loading and unloading bolt 12, and then pull out the loading and unloading bolt 12 from the inside of the through hole 11 to disassemble the loading and unloading plate 3 from the central axis 9. The loading and unloading plate 3 and the device directly or indirectly connected to the loading and unloading plate 3 can be disassembled and replaced, which increases the convenience for the staff to replace damaged parts during quality inspection.

[0026] like Figure 2 and Figure 3 As shown, a fixing hole 15 is opened on the surface of the hollow cylinder 5, a valve 16 is fixed inside the fixing hole 15, a sealing cover 17 is threadedly connected to the valve 16, a damper 19 is arranged on the connecting rod 4, a shock-absorbing compression spring 18 is surrounded on the surface of the connecting rod 4, one end of the shock-absorbing compression spring 18 is fixed to the top surface of the loading and unloading plate 3, and the other end of the shock-absorbing compression spring 18 is fixed to the bottom end of the damper 19.

[0027] During use, the damper 19 controls the shock absorbing effect by hindering the vibration of the shock absorbing compression spring 18. The damper 19 can affect the hardness and softness of the shock absorbing. The staff will add gas to the inside of the hollow tube 5 through the valve mouth 16 to prevent the shock absorbing effect on the front wheel 1 of the baby carriage from being affected by insufficient gas inside the hollow tube 5.

[0028] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A front wheel shock absorbing structure of an electric three-wheeled baby carriage, comprising a front wheel (1) of the baby carriage, wherein the front wheel (1) of the baby carriage is rotatably arranged inside a front wheel cover (2), and characterized in that: Both sides of the front wheel cover (2) are detachably provided with loading and unloading plates (3), the top surface of the loading and unloading plates (3) is fixed with a connecting rod (4), the top end of the connecting rod (4) is slidably provided with a hollow cylinder (5), the bottom end of the hollow cylinder (5) is provided with a sealing hole (6), the sealing hole (6) and the connecting rod (4) are slidably inserted, the top end of the connecting rod (4) is fixed with an elastic plate (7), the elastic plate (7) is interference fit with the inside of the hollow cylinder (5), and the sealing hole (6) is interference fit with the connecting rod (4).

2. The front wheel shock absorbing structure of the electric three-wheeled baby carriage according to claim 1, characterized in that: A rotating hole (8) is provided on one side of the front wheel (1) of the baby carriage, a central shaft (9) is rotatably inserted inside the rotating hole (8), a plurality of bearings are fixed on the central shaft (9), an inner wall surface of the rotating hole (8) is fixed to the surface of the outer ring of the bearing, positioning holes (10) are respectively provided on both sides of the front wheel cover (2), and the central shaft (9) is fixedly inserted into the positioning hole (10).

3. The front wheel shock absorbing structure of the electric three-wheeled baby carriage according to claim 1, characterized in that: Through holes (11) are respectively provided on both sides of the loading and unloading plate (3); the loading and unloading plate (3) is slidably inserted with the central shaft (9); two loading and unloading holes (13) are provided on the surface of the central shaft (9); loading and unloading bolts (12) are slidably inserted inside the through holes (11); one end of the loading and unloading bolt (12) passes through the through holes (11) and is slidably inserted with the loading and unloading holes (13); one end of the loading and unloading bolt (12) is threadedly connected with a nut (14).

4. The front wheel shock absorbing structure of the electric three-wheeled baby carriage according to claim 1, characterized in that: A fixing hole (15) is provided on the surface of the hollow cylinder (5), a valve (16) is fixed inside the fixing hole (15), and a sealing cover (17) is threadedly connected to the valve (16).

5. The front wheel shock absorbing structure of the electric three-wheeled baby carriage according to claim 1, characterized in that: A damper (19) is provided on the connecting rod (4).

6. The front wheel shock absorbing structure of the electric three-wheeled baby carriage according to claim 1, characterized in that: The surface of the connecting rod (4) is surrounded by a shock-absorbing compression spring (18), one end of the shock-absorbing compression spring (18) is fixed to the top surface of the loading and unloading plate (3), and the other end of the shock-absorbing compression spring (18) is fixed to the bottom end of the damper (19).

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