Walking structure of baby carriage
By using a combination of movable seats and tensile springs in the walking structure of the stroller, the problem of insufficient shock absorption effect of the existing stroller rear wheels is solved, and a better shock absorption and buffering effect is achieved, and the vibration load in the inclined direction is adapted.
Patent Information
- Application Number
- CN202421437115.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-21
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-06-21
AI Technical Summary
The shock absorption and cushioning effect of the rear wheels of existing strollers is insufficient, especially when resistance needs to be overcome during travel, the driving requirements of the rear wheels are poorly adaptable.
A walking structure of a stroller is adopted, wherein the rear wheel main body of the rear wheel is articulated with the frame through the movable seat, so that the rear wheel main body and the movable seat can rotate and swing relative to the frame, and at the same time, a tension spring is used to play a shock-absorbing role in the rotation and swing of the rear wheel main body.
Through the shock-absorbing and buffering effect of the tensile spring, the rear wheel can better adapt to the vibration load in the inclined direction, improving the shock-absorbing effect of the stroller rear wheel.
Smart Images
Figure CN222591556U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of baby products, and in particular to a walking structure of a baby carriage. Background Art
[0002] Whether the wheels of the baby stroller are spring-loaded and how many springs are used for shock absorption are important indicators for evaluating the shock absorption performance of the wheels. Usually, at least the two front wheels of most baby strollers are spring-loaded, and better baby strollers are equipped with spring shock absorption for all four front and rear wheels.
[0003] When pushing a stroller, the power is mainly output by the rear wheels, so the rear wheels are usually larger than the front wheels. Relatively speaking, the horizontal driving force required for the stroller to move is greater. Currently, the shock-absorbing buffers of the rear wheels of strollers are usually vertical springs, which have poor adaptability to the driving requirements of the rear wheels and the buffering effect needs to be improved. Utility Model Content
[0004] In order to improve the buffering and shock-absorbing effect of the rear wheels of a baby stroller, the present application provides a walking structure of the baby stroller.
[0005] The walking structure of a baby carriage provided in the present application adopts the following technical solution:
[0006] A walking structure of a baby carriage comprises a frame, the frame is equipped with a front wheel and a rear wheel, the rear wheel comprises a rear wheel body and a movable seat, the rear wheel body is rotatably mounted on the movable seat, the movable seat is hinged to the frame, a tension spring is connected between the movable seat and the frame; the tension spring is used to prevent the movable seat from rotating and swinging relative to the frame.
[0007] By adopting the above technical solution, the walking structure of the baby stroller walks through the front wheels and the rear wheels, wherein the rear wheel body of the rear wheel is hinged to the frame through the movable seat, so that the rear wheel body and the movable seat can rotate and swing relative to the frame, and the tension spring can play a shock-absorbing and buffering role in the rotation and swing of the rear wheel body. In addition to bearing gravity during the movement of the rear wheel, it is also necessary to overcome the main resistance during the movement of the baby stroller, so that the rear wheel is subjected to the combined force of the inclination relative to the ground during the movement. The rear wheel uses the tension spring as a shock-absorbing and buffering component, which can better adapt to the vibration load in the inclination direction.
[0008] Optionally, the movable seat is provided with two limit blocking pieces, the limit blocking pieces are parallel to the length direction of the tension spring, and the tension spring is located between the two limit blocking pieces.
[0009] By adopting the above technical solution, the two limit blocks can limit the position of the tension spring, making the position of the tension spring more stable.
[0010] Optionally, hooks are respectively provided at both ends of the tension spring; the rear wheel also includes two hanging components for connecting the hooks, one of the hanging components is fixed to the frame, and the other hanging component is fixed to the movable seat.
[0011] By adopting the above technical solution, the tension spring is connected to the two hanging components respectively through the hooks at both ends, so the installation is more convenient.
[0012] Optionally, the hanging component is a pin shaft, the pin shaft sleeve is provided with a limiting sleeve, one end of the limiting sleeve is sleeved with the hook, and the end of the limiting sleeve is provided with a notch for avoiding the hook.
[0013] When the extension spring is stretched and deformed, the two hooks of the extension spring have a tendency to expand outward. By adopting the above technical solution, the limit sleeve is connected with the hook, so that the limit sleeve can constrain the hook to suppress the outward deformation amplitude of the hook, thereby reducing the situation of the hook being decoupled from the pin.
[0014] Optionally, the pin shaft is provided with a retaining spring, and the retaining spring is used to limit the axial position of the limiting sleeve.
[0015] By adopting the above technical solution, when the retaining spring is removed from the pin shaft, the limiting sleeve can be moved axially away from the hook, so that the tension spring can be removed and replaced.
[0016] Optionally, the inner hole of the limiting sleeve is adapted to the pin shaft, and an expanded hole is provided at one end of the limiting sleeve, the expanded hole is used to accommodate the hook, and the notch is opened in the hole wall of the expanded hole.
[0017] By adopting the above technical solution, the inner hole of the limit sleeve is adapted to the pin shaft, so that the installation state of the limit sleeve on the pin shaft is more reliable. At the same time, by arranging an expansion hole on the limit sleeve, the limit sleeve can meet the requirement of accommodating the hook.
[0018] Optionally, the front wheel includes a front wheel support, a front wheel body and a compression spring, the front wheel support is mounted on the frame, the front wheel body is provided with a front wheel axle, the front wheel axle is slidably connected to the front wheel support up and down, and the compression spring is used to prevent the front wheel axle from moving upward.
[0019] By adopting the above technical solution, the front wheel axle of the front wheel body can slide up and down relative to the front wheel support. Under this premise, a compression spring that can hinder the upward movement of the front wheel axle is provided, so that the compression spring can form a shock-absorbing and buffering effect on the front wheel.
[0020] Optionally, the front wheel support is provided with a vertical rotating shaft, and the front wheel support is rotationally connected to the frame via the vertical rotating shaft.
[0021] By adopting the above technical solution, the front wheel support is rotatably connected to the frame through the vertical rotating shaft, so that the front wheel can play a role in guiding the steering.
[0022] In summary, the present application includes at least one of the following beneficial technical effects:
[0023] 1. The walking structure of the baby stroller is driven by the front wheels and the rear wheels, wherein the rear wheel body of the rear wheel is hinged to the frame through a movable seat, so that the rear wheel body and the movable seat can rotate and swing relative to the frame, and the tension spring can play a shock-absorbing and buffering role in the rotation and swing of the rear wheel body. The rear wheel can better adapt to the vibration load in the tilt direction.
[0024] 2. The front wheel axle of the front wheel body can slide up and down relative to the front wheel support. Under this premise, a compression spring that can hinder the upward movement of the front wheel axle is provided so that the compression spring can have a shock-absorbing and buffering effect on the front wheel. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 Schematic diagram of the walking structure of the baby carriage of Example 1.
[0026] Figure 2 It is a schematic diagram of Example 1 for reflecting the positional relationship between the front wheel axle and the compression spring.
[0027] Figure 3 yes Figure 1 Magnified view at A in the middle.
[0028] Figure 4 Schematic diagram of the connection method of the tension spring in Example 1.
[0029] Figure 5 It is a schematic diagram of the connection method of the tension spring in Example 2.
[0030] Description of reference numerals:
[0031] 1. Frame; 2. Front wheel; 21. Front wheel support; 211. Slideway; 22. Front wheel body; 23. Vertical rotation axis; 24. Front wheel axle; 25. Sliding block; 26. Compression spring; 3. Rear wheel; 31. Rear wheel body; 32. Movable seat; 321. Limit baffle; 33. Fixed seat; 34. Rear wheel axle; 35. Tension spring; 351. Hook; 36. Pin; 37. Limit sleeve; 371. Expanded hole; 372. Notch; 38. Retaining spring. DETAILED DESCRIPTION
[0032] The following is combined with Figure 1-5 This application is described in further detail.
[0033] Example 1
[0034] The present application embodiment discloses a walking structure of a baby carriage. Figure 1 The walking structure of the baby carriage includes a frame 1, which is a rod frame structure. Two front wheels 2 and two rear wheels 3 are installed at the bottom of the frame 1. The two front wheels 2 are relatively independent, and the two rear wheels 3 are coaxially arranged.
[0035] Reference Figure 1 and Figure 2 The front wheel 2 includes a front wheel support 21 and a front wheel body 22. The front wheel support 21 is provided with a vertical rotating shaft 23, and the front wheel support 21 is rotatably connected to the frame 1 through the vertical rotating shaft 23; the front wheel body 22 is provided with a front wheel axle 24, and sliders 25 are respectively provided at both ends of the front wheel axle 24. The front wheel support 21 is provided with two slideways 211 for the sliders 25 to slide up and down. The front wheel axle 24 is connected to the front wheel support 21 through the sliders 25 and the slideways 211 to form an up and down sliding connection. Compression springs 26 are provided in the two slideways 211 of the front wheel body 22, and the compression springs 26 are used to prevent the sliders 25 from moving upward.
[0036] Reference Figure 1 and Figure 3 The rear wheel 3 includes a rear wheel body 31, a movable seat 32 and a fixed seat 33. The fixed seat 33 is fixedly connected to the frame 1. A rear wheel axle 34 is connected between the movable seats 32 of the two rear wheels 3. The rear wheel body 31 is rotatably mounted on the movable seat 32. The rear wheel body 31 is coaxial with the rear wheel axle 34. The movable seat 32 is hinged to the frame 1. A tension spring 35 is connected between the movable seat 32 and the fixed seat 33. The tension spring 35 is used to prevent the movable seat 32 from rotating and swinging relative to the frame 1.
[0037] Reference Figure 1 The movable seat 32 is integrally provided with two limit baffles 321 , the limit baffles 321 are parallel to the length direction of the tension spring 35 , and the tension spring 35 is located between the two limit baffles 321 .
[0038] Reference Figure 1 and Figure 4 Hooks 351 are respectively provided at both ends of the tension spring 35 , and both the fixed seat 33 and the movable seat 32 are fixedly provided with a hanging component for connecting the hooks 351 , and the hanging component is a pin shaft 36 .
[0039] The implementation principle of the walking structure of a baby stroller in the embodiment of the present application is as follows: the walking structure of the baby stroller walks through the front wheel 2 and the rear wheel 3, wherein the rear wheel body 31 of the rear wheel 3 is hinged to the frame 1 through the movable seat 32, so that the rear wheel body 31 and the movable seat 32 can rotate and swing relative to the frame 1, and the tension spring 35 can play a shock-absorbing and buffering role in the rotation and swing of the rear wheel body 31. In addition to bearing gravity during the movement of the rear wheel 3, it is also necessary to overcome the main resistance during the movement of the baby stroller, so that the rear wheel 3 is subjected to the combined force of the inclination relative to the ground during the movement. The rear wheel 3 uses the tension spring 35 as a shock-absorbing and buffering member, which can better adapt to the vibration load in the inclination direction.
[0040] Example 2
[0041] Reference Figure 5 The difference between this embodiment and embodiment 1 is that the pin shaft 36 in this embodiment is provided with a limiting sleeve 37, the inner hole of the limiting sleeve 37 is adapted to the pin shaft 36, one end of the limiting sleeve 37 is provided with an expanded hole 371, the inner diameter of the expanded hole 371 is larger than the inner diameter of the limiting sleeve 37, the expanded hole 371 is sleeved with the hook 351, and the hole wall of the expanded hole 371 is provided with a notch 372 for avoiding the hook 351; the pin shaft 36 is provided with a retaining spring 38, and the retaining spring 38 is used to limit the axial position of the limiting sleeve 37.
[0042] When the tension spring 35 is stretched and deformed, the two hooks 351 of the tension spring 35 have a tendency to expand outward. By using the expansion hole 371 of the limit sleeve 37 to constrain the hook 351, the outward expansion deformation amplitude of the hook 351 can be suppressed, thereby reducing the situation of the hook 351 being decoupled from the pin 36.
[0043] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A walking structure of a baby carriage, comprising a frame (1), wherein the frame (1) is provided with front wheels (2) and rear wheels (3), and wherein: The rear wheel (3) comprises a rear wheel body (31) and a movable seat (32); the rear wheel body (31) is rotatably mounted on the movable seat (32); the movable seat (32) is hinged to the vehicle frame (1); a tension spring (35) is connected between the movable seat (32) and the vehicle frame (1); the tension spring (35) is used to prevent the movable seat (32) from rotating and swinging relative to the vehicle frame (1).
2. A walking structure for a baby carriage according to claim 1, characterized in that: The movable seat (32) is provided with two limit baffles (321), the limit baffles (321) are parallel to the length direction of the tension spring (35), and the tension spring (35) is located between the two limit baffles (321).
3. The walking structure of a baby stroller according to claim 1, characterized in that: Hooks (351) are respectively provided at both ends of the tension spring (35); the rear wheel (3) further comprises two hanging parts for connecting the hooks (351), one of the hanging parts is fixed to the vehicle frame (1), and the other hanging part is fixed to the movable seat (32).
4. A walking structure for a baby carriage according to claim 3, characterized in that: The hanging component is a pin shaft (36), the pin shaft (36) is sleeved with a limiting sleeve (37), one end of the limiting sleeve (37) is sleeved with the hook (351), and the end of the limiting sleeve (37) is provided with a notch (372) for avoiding the hook (351).
5. The walking structure of a baby carriage according to claim 4, characterized in that: The pin shaft (36) is provided with a retaining spring (38), and the retaining spring (38) is used to limit the axial position of the limiting sleeve (37).
6. The walking structure of a baby carriage according to claim 4, characterized in that: The inner hole of the limiting sleeve (37) is adapted to fit the pin shaft (36); an expanded hole (371) is provided at one end of the limiting sleeve (37); the expanded hole (371) is used to accommodate the hook (351); and the notch (372) is provided on the hole wall of the expanded hole (371).
7. The walking structure of a baby stroller according to claim 1, characterized in that: The front wheel (2) comprises a front wheel support (21), a front wheel body (22) and a compression spring (26); the front wheel support (21) is mounted on the vehicle frame (1); the front wheel body (22) is provided with a front wheel axle (24); the front wheel axle (24) and the front wheel support (21) are connected in an upward sliding manner; and the compression spring (26) is used to prevent the front wheel axle (24) from moving upward.
8. The walking structure of a baby carriage according to claim 7, characterized in that: The front wheel support (21) is provided with a vertical rotation shaft (23), and the front wheel support (21) is rotationally connected to the vehicle frame (1) via the vertical rotation shaft (23).