Aluminum alloy wheel
Patent Information
- Application Number
- CN202521904968.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-04
- Publication Date
- 2026-09-04
- Estimated Expiration
- 2035-09-04
AI Technical Summary
这种结构存在明显缺陷：首先，较短且下倾的下抵面无法为卡脚提供一个有效的、向上的支撑和锁止面；其次，当车辆行驶振动时，卡脚容易沿此斜面滑出，导致轮毂盖安装不牢固，甚至在高速行驶中脱落，存在安全隐患，也影响美观
本实用新型将环形卡槽的下抵面设计为向上倾斜，形成一个类似于“钩状”的锁止结构，当轮毂盖的卡脚卡入槽内后，此上斜的下抵面能够从下方“兜住”并锁紧卡脚，有效抵抗车辆振动带来的向下的脱出力，彻底解决了轮毂盖易脱落的问题。
Smart Images
Figure CN224714721U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to automotive parts, and in particular to an aluminum alloy wheel hub. Background Technology
[0002] Car wheel hubs typically have a hubcap at the center, used for decoration and protection of the wheel bearing. Common hubcaps are secured by multiple clips on their back that snap into annular grooves in the wheel rim.
[0003] Currently, the cross-section of the annular groove is roughly C-shaped, with its lower abutment surface typically designed to be short and often featuring a downward slope for ease of demolding. This structure has significant drawbacks: First, the short and downward-sloping lower abutment surface cannot provide an effective upward support and locking surface for the retaining foot; second, when the vehicle vibrates during driving, the retaining foot can easily slide off along this slope, resulting in an insecure installation of the wheel hub cover, or even detachment at high speeds, posing a safety hazard and affecting aesthetics.
[0004] Therefore, a new wheel hub slot structure is urgently needed to solve the problem of unstable wheel hub cover engagement. Utility Model Content
[0005] The technical problem to be solved by this utility model is to provide an aluminum alloy wheel hub whose annular groove structure can firmly lock the wheel hub cover's locking feet and effectively prevent it from falling off.
[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is: an aluminum alloy wheel hub, including a rim and a disc, wherein an annular groove is provided on the inner wall of the end of the rim near the disc, the cross-section of the annular groove is C-shaped, and includes a connecting surface, an upper abutment surface located at the upper end of the connecting surface and a lower abutment surface located at the lower end of the connecting surface, wherein the lower abutment surface extends upward at an inclination. The principle of this invention is as follows: When installing the hubcap, align the retaining foot on its back with the annular groove and press it down. The elastic part at the lower end of the retaining foot first contacts the arc-shaped transition area of the lower abutment surface. Guided by this area, the elastic part of the retaining foot undergoes elastic deformation and slides into the groove. After installation, the elastic part of the retaining foot rebounds under its own elasticity, and the upper retaining platform of the retaining foot abuts against the upper abutment surface, forming a locked state. Because the lower end of the retaining foot is firmly "supported" and "hooked" by the upwardly inclined lower abutment surface, no matter how the vehicle bumps or vibrates, the retaining foot is mainly subjected to a downward pull-out force. This force interacts with the normal force of the lower abutment surface, generating greater friction and locking force, thereby greatly reducing the risk of detachment and ensuring that the hubcap is securely and reliably fixed.
[0007] As an improvement, the lower abutment surface is tilted upward at an angle of 10~20° relative to the horizontal plane.
[0008] As an improvement, the lower abutment surface is curved to the inner wall surface of the rim.
[0009] As an improvement, the lower abutment surface is closer to the center line of the wheel hub than the upper abutment surface.
[0010] The beneficial effects of this utility model compared with the prior art are: This invention designs the lower abutment surface of the annular groove to be inclined upward, forming a locking structure similar to a "hook". When the wheel hub cover's locking foot is inserted into the groove, this inclined lower abutment surface can "hold" and lock the locking foot from below, effectively resisting the downward pull-out force caused by vehicle vibration, and completely solving the problem of wheel hub covers easily falling off. Attached Figure Description
[0011] Figure 1 This is a schematic diagram showing the fit between the hubcap and the hub.
[0012] Figure 2 for Figure 1 Enlarged view of point A.
[0013] Figure 3 for Figure 1 Enlarged view of point B. Detailed Implementation
[0014] The present invention will be further described below with reference to the accompanying drawings.
[0015] like Figures 1 to 3 As shown, an aluminum alloy wheel hub includes a rim 1 and a disc. The inner wall of the rim 1 near the disc has an annular groove 2. The annular groove 2 has a C-shaped cross-section and includes an arc-shaped connecting surface 21, an upper abutment surface 23 at the upper end of the connecting surface 21, and a lower abutment surface 22 at the lower end of the connecting surface 21. The upper abutment surface 23 has a downward curving tendency. The lower abutment surface 22 extends upward at an angle of 10-20° relative to the horizontal plane. The lower abutment surface 22 transitions arc-shaped to the inner wall surface of the rim 1, and is closer to the centerline of the wheel hub than the upper abutment surface 23.
[0016] The principle of this utility model is as follows: Figure 2 As shown, when installing the hubcap, align the retaining foot on its back with the annular groove 2 and press it down. The elastic part 31 at the lower end of the retaining foot 3 first contacts the arc-shaped transition area of the lower abutment surface 22. Guided by this area, the elastic part 31 of the retaining foot undergoes elastic deformation and slides into the groove 2. After installation, the elastic part 31 of the retaining foot rebounds under its own elasticity, and the upper retaining platform 32 of the retaining foot abuts against the upper abutment surface 23, forming a locked state. Since the lower end of the retaining foot is firmly "supported" and "hooked" by the upwardly inclined lower abutment surface 22, no matter how the vehicle bumps and vibrates, the retaining foot is mainly subjected to a downward pull-out force. This force will interact with the normal force of the lower abutment surface 22 to generate greater friction and locking force, thereby greatly reducing the risk of falling off and ensuring that the hubcap is securely fixed.
Claims
1. An aluminum alloy wheel hub, comprising a rim and a disc, characterized in that: The inner wall of the rim near the wheel disc is provided with an annular groove. The cross-section of the annular groove is C-shaped and includes a connecting surface, an upper abutment surface located at the upper end of the connecting surface, and a lower abutment surface located at the lower end of the connecting surface. The lower abutment surface extends upward at an incline.
2. The aluminum alloy wheel hub according to claim 1, characterized in that: The lower abutment surface is inclined upward at an angle of 10~20° relative to the horizontal plane.
3. The aluminum alloy wheel hub according to claim 1, characterized in that: The lower abutment surface transitions into the inner wall surface of the rim in an arc shape.
4. The aluminum alloy wheel hub according to claim 1, characterized in that: The lower abutment surface is closer to the center line of the wheel hub than the upper abutment surface.