Lightweight high-strength child balance car integrated frame
Patent Information
- Application Number
- CN202522182474.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-15
- Publication Date
- 2026-09-15
- Estimated Expiration
- 2035-10-15
AI Technical Summary
[0002]现有儿童平衡车为追求轻量化普遍采用中空铝管拼焊车架，管壁厚度被压缩至1.2mm以下，导致：整体抗扭刚度不足，儿童在侧倾路面骑行时，车架后端出现肉眼可见的“S”形弹性变形，影响操控稳定性，易发生疲劳裂纹，铝管封闭结构使热量积聚，表面温度夏季较高，存在烫伤风险
轻量化高强度儿童平衡车一体成型车架，与现有技术相比，一体成型取消焊缝，疲劳试验万次无裂纹，对比传统焊接车架寿命提高，表面低温安全：散热铝板与散热储存槽组合，让车架最高表面温度降低，避免儿童夏季触碰烫伤，生产效率高：对接接头、后防护定位弯板与中心连接架一次出模，减少后续加工量，可维护性好：储存安装框与脚踏框上下同型号，可互换安装，售后仅需更换单组散热轻量化保护组件即可恢复性能，降低维修成本。
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Figure CN224752671U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of children's balance bike technology, and more specifically, to a lightweight, high-strength one-piece molded frame for children's balance bikes. Background Technology
[0002] In pursuit of lightweight design, current children's balance bikes generally use hollow aluminum tubes welded together to form a frame, with the tube wall thickness compressed to less than 1.2mm. This results in: insufficient overall torsional stiffness; visible "S"-shaped elastic deformation at the rear of the frame when children ride on sloping surfaces, affecting handling stability and making them prone to fatigue cracks; and the closed aluminum tube structure causes heat to accumulate, resulting in high surface temperatures in summer and posing a risk of burns. Utility Model Content
[0003] In order to overcome the above-mentioned defects of the prior art, the embodiments of this utility model provide a lightweight, high-strength one-piece molded frame for children's balance bikes to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a lightweight, high-strength, one-piece molded frame for a children's balance bike, including a central connecting frame. The central connecting frame has child balance bike frame support and stabilization devices at both ends. Each child balance bike frame support and stabilization device includes a high-strength stabilization component and a heat-dissipating, lightweight protection component. The heat-dissipating, lightweight protection component is located at the lower end of the high-strength stabilization component, and the high-strength stabilization component is located on both sides of the central connecting frame.
[0005] In a preferred embodiment, the high-strength stabilizing component includes: a butt joint, a rear protective positioning bend, a longitudinal reinforcement frame, a transverse reinforcement frame, a footrest frame, and a fixing groove. The fixing groove is formed inside the upper part of the footrest frame, and the longitudinal reinforcement frame and the transverse reinforcement frame are respectively installed inside the fixing groove.
[0006] In a preferred embodiment, the heat dissipation lightweight protection component includes: a heat dissipation storage tank, a storage mounting frame, and a heat dissipation aluminum plate. Multiple sets of heat dissipation aluminum plates are provided, and the outer walls of the multiple sets of heat dissipation aluminum plates are installed on the inner wall of the heat dissipation storage tank.
[0007] In a preferred embodiment, two sets of rear protective positioning plates are provided, and the front ends of the two sets of rear protective positioning plates are respectively installed on the outer wall of the rear end of the central connecting frame.
[0008] In a preferred embodiment, two sets of the mating joints are provided, and the two sets of mating joints are respectively provided on the outer walls of both ends of the central connecting frame. Two sets of the high strength stabilizing components are provided, and the two sets of high strength stabilizing components are the same size and model, and the two sets of high strength stabilizing components are respectively installed on both sides of the central connecting frame.
[0009] In a preferred embodiment, the heat dissipation storage slot is located inside the lower end of the storage mounting frame, and two sets of the heat dissipation lightweight protection components are provided.
[0010] In a preferred embodiment, the two upper ends of the heat dissipation lightweight protection components are respectively installed on the two lower ends of the foot pedal frame, and the upper and lower ends of the foot pedal frame and the heat dissipation storage tank are the same size.
[0011] The technical effects and advantages of this utility model are as follows: The lightweight, high-strength one-piece molded frame of the children's balance bike eliminates welds compared to existing technologies. It withstands tens of thousands of fatigue tests without cracking, resulting in a longer lifespan compared to traditional welded frames. The surface is safe at low temperatures: the combination of a heat-dissipating aluminum plate and a heat-dissipating storage tank lowers the maximum surface temperature of the frame, preventing burns to children in summer. Production efficiency is high: the butt joint, rear protective positioning bend, and center connecting frame are molded in one piece, reducing subsequent processing. Maintainability is excellent: the storage mounting frame and footrest frame are of the same model and can be interchanged. After-sales service only requires replacing a single set of lightweight heat-dissipating protection components to restore performance, reducing maintenance costs. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0013] Figure 2 This is a schematic diagram of the structure of the children's balance bike frame support and stabilization device of this utility model.
[0014] Figure 3 This is a schematic diagram of the high-strength and stable component structure of this utility model.
[0015] Figure 4 This is a schematic diagram of the heat dissipation and lightweight protection component of this utility model.
[0016] The attached figures are labeled as follows: 1. Central connecting frame; 2. Child balance bike frame support and stabilization device; 21. High-strength stabilizing component; 211. Butt joint; 212. Lateral reinforcement frame; 213. Longitudinal reinforcement frame; 214. Footrest frame; 215. Fixing groove; 216. Rear protective positioning bend; 22. Heat dissipation lightweight protection component; 221. Heat dissipation aluminum plate; 222. Storage mounting frame; 223. Heat dissipation storage groove. Detailed Implementation
[0017] 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.
[0018] As attached Figure 1-4 As shown, this utility model provides a lightweight, high-strength, one-piece molded frame for a children's balance bike, including a central connecting frame 1. The central connecting frame 1 has children's balance bike frame support and stabilization devices 2 at both ends. The children's balance bike frame support and stabilization devices 2 include: a high-strength stabilization component 21 and a heat dissipation and lightweight protection component 22. The heat dissipation and lightweight protection component 22 is disposed at the lower end of the high-strength stabilization component 21, and the high-strength stabilization component 21 is disposed on both sides of the central connecting frame 1.
[0019] The high-strength stabilizing component 21 includes: a butt joint 211, a rear protective positioning bend plate 216, a longitudinal reinforcement frame 213, a transverse reinforcement frame 212, a footrest frame 214, and a fixing groove 215. The fixing groove 215 is located inside the upper part of the footrest frame 214. The longitudinal reinforcement frame 213 and the transverse reinforcement frame 212 are respectively installed inside the fixing groove 215. Two sets of rear protective positioning bend plates 216 are provided, and the front ends of the two sets of rear protective positioning bend plates 216 are respectively installed on the outer wall of the rear end of the central connecting frame 1. Two sets of butt joints 211 are provided, and the two sets of butt joints 211 are respectively located on the outer walls of both ends of the central connecting frame 1. Two sets of high-strength stabilizing components 21 are provided, and the two sets of high-strength stabilizing components 21 are of the same size and model, and the two sets of high-strength stabilizing components 21 are respectively installed on both sides of the central connecting frame 1.
[0020] The heat dissipation lightweight protection component 22 includes: a heat dissipation storage tank 223, a storage mounting frame 222, and a heat dissipation aluminum plate 221. Multiple sets of heat dissipation aluminum plates 221 are provided, and the outer walls of multiple sets of heat dissipation aluminum plates 221 are installed on the inner wall of the heat dissipation storage tank 223. The heat dissipation storage tank 223 is opened at the lower end inside the storage mounting frame 222. Two sets of heat dissipation lightweight protection components 22 are provided, and the upper ends of the two sets of heat dissipation lightweight protection components 22 are respectively installed at the lower ends of the two sets of foot pedal frames 214. The upper and lower ends of the foot pedal frames 214 and the heat dissipation storage tank 223 are the same size.
[0021] The specific implementation method is as follows: When using this utility model, load transfer: the child's weight passes through the footrest frame 214 → the transverse reinforcement frame 212 and longitudinal reinforcement frame 213 in the fixing groove 215 to form a "cross space beam", instantly dispersing the local pedaling force to the central connecting frame 1; the central connecting frame 1 then distributes the torque evenly to the rear protective positioning bends 216 on both sides through the butt joint 211, realizing a closed force circuit for the whole vehicle, avoiding single-point stress concentration, and integral molding: the entire high-strength stabilizing component 21 and the central connecting frame 1 are integrally molded by 8000T high-pressure die casting, without traditional ring welding, the material fiber flow direction is continuous, the torsional stiffness is improved, and heat dissipation and lightweighting are achieved in parallel: the lower end of the footrest frame 214 is directly coupled to the heat dissipation and lightweight protection component 22, and multiple sets of heat dissipation aluminum plates 221 are embedded in the heat dissipation storage groove 223 to form a "fin-type" air channel; when riding, the oncoming wind carries away heat through the front and rear through holes of the storage installation frame 222, causing the surface temperature of the frame to drop, while the wall thickness of the heat dissipation aluminum plate 221 is only 0.8mm. Compared to solid aluminum plates, this design achieves weight reduction through modular assembly: the rear protective positioning bend plate 216 and the interfaces of the wheel, seat post, and front fork are all machined on the same reference plane, ensuring left-right symmetry, reducing assembly internal stress, and improving the overall straight-line gliding stability of the vehicle. High rigidity without weight reduction: the cross-beam structure of the transverse reinforcement frame 212 and the longitudinal reinforcement frame 213 meets the requirements of racing-grade lightweight design. Increased fatigue life: one-piece molding eliminates welds, and after 200,000 fatigue tests, no cracks were observed, resulting in a longer lifespan compared to traditional welded frames. Low-temperature surface safety: the combination of the heat dissipation aluminum plate 221 and the heat dissipation storage tank 223 lowers the highest surface temperature of the frame, preventing children from being burned by contact in summer. High production efficiency: the butt joint 211, the rear protective positioning bend plate 216, and the center connecting frame 1 are molded in one piece, reducing subsequent processing. Good maintainability: the storage mounting frame 222 and the pedal frame 214 are of the same model and can be interchanged. After-sales service only requires replacing a single set of lightweight heat dissipation protection components 22 to restore performance, reducing maintenance costs.
[0022] Summary of improvements compared to existing technologies This utility model uses an integrated molding structure of "cross-shaped spatial beam plus fin heat dissipation" to replace the four-section combination of "pipe plus weld seam plus reinforcing plate plus outer heat dissipation plate". While reducing the weight by 18%, the torsional stiffness is increased by about 35%, the surface temperature is reduced by 8℃ to 12℃, the fatigue life is increased by 3 times, and no subsequent welding reinforcement is required, thus achieving a truly "lighter, stronger and cooler" children's balance bike frame.
[0023] Working principle of this utility model: When using this utility model, load transfer: the child's weight passes through the footrest frame 214 → the transverse reinforcing frame 212 and longitudinal reinforcing frame 213 in the fixing groove 215 to form a "cross space beam", instantly dispersing the local stepping force to the central connecting frame 1; the central connecting frame 1 then distributes the torque evenly to the two rear protective positioning plates 216 on both sides through the butt joint 211, realizing a closed force circuit for the whole vehicle, avoiding single-point stress concentration, and integral molding: the entire high-strength stable component 21 and the central connecting frame 1 are integrally molded by 8000T high-pressure die casting, without traditional ring welding, the material fiber flow is continuous, and the torsional resistance is strong. Increased rigidity, heat dissipation and lightweight design go hand in hand: The lower end of the pedal frame 214 is directly coupled with the heat dissipation and lightweight protection component 22, and multiple sets of heat dissipation aluminum plates 221 are embedded in the heat dissipation storage groove 223 to form a "fin-like" air channel; when riding, the oncoming wind carries away heat through the front and rear through holes of the storage mounting frame 222, which reduces the surface temperature of the frame. At the same time, the heat dissipation aluminum plate 221 has a wall thickness of only 0.8mm, which achieves a weight reduction effect compared to solid aluminum plates. Modular assembly: The interfaces of the rear protective positioning bend plate 216 with the wheel, seat post and front fork are all processed on the same reference plane to ensure left and right symmetry, reduce assembly internal stress and improve the straight-line gliding stability of the whole vehicle.
[0024] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change. Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other. Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A lightweight, high-strength, one-piece molded frame for a children's balance bike, including a central connecting frame (1), characterized in that: The central connecting frame (1) is equipped with child balance bike frame support and stabilization devices (2) at both ends; The child balance bike frame support and stabilization device (2) includes: a high-strength stabilization component (21) and a heat dissipation and lightweight protection component (22). The heat dissipation and lightweight protection component (22) is located at the lower end of the high-strength stabilization component (21). The high-strength stabilization component (21) is located on both sides of the central connecting frame (1). The high-strength stabilization component (21) includes: a butt joint (211), a rear protective positioning bend plate (216), a longitudinal reinforcement frame (213), a transverse reinforcement frame (212), and a footrest frame (213). 214) and fixing groove (215), the fixing groove (215) is opened at the upper end of the footrest frame (214), the longitudinal reinforcement frame (213) and the transverse reinforcement frame (212) are respectively installed inside the fixing groove (215), the heat dissipation lightweight protection component (22) includes: heat dissipation storage groove (223), storage installation frame (222) and heat dissipation aluminum plate (221), the heat dissipation aluminum plate (221) is provided in multiple sets, and the outer wall of the multiple sets of heat dissipation aluminum plate (221) is installed on the inner wall of the heat dissipation storage groove (223).
2. The lightweight, high-strength, one-piece molded frame for children's balance bikes according to claim 1, characterized in that: The rear protective positioning bend plate (216) is provided in two sets, and the front ends of the two sets of rear protective positioning bend plates (216) are respectively installed on the outer wall of the rear end of the central connecting frame (1).
3. The lightweight, high-strength, one-piece molded frame for children's balance bikes according to claim 1, characterized in that: The docking joint (211) is provided in two sets, and the two sets of docking joints (211) are respectively opened on the outer walls of both ends of the central connecting frame (1). The high strength stabilizing component (21) is provided in two sets, and the two sets of high strength stabilizing components (21) are the same size and model, and the two sets of high strength stabilizing components (21) are respectively installed on both ends of the central connecting frame (1).
4. The lightweight, high-strength, one-piece molded frame for children's balance bikes according to claim 1, characterized in that: The heat dissipation storage tank (223) is located inside the lower end of the storage mounting frame (222), and two sets of the heat dissipation lightweight protection components (22) are provided.
5. The lightweight, high-strength, one-piece molded frame for children's balance bikes according to claim 1, characterized in that: The two upper ends of the heat dissipation lightweight protection component (22) are respectively installed on the two lower ends of the footrest frame (214). The footrest frame (214) and the heat dissipation storage tank (223) have the same model and size at both ends.