What are the unique requirements and precautions for installing automotive aluminum hinges?
Publish Time: 2024-12-18
The installation of automotive aluminum hinges has a series of unique requirements and precautions, which are designed to ensure the safety, stability and smooth opening and closing of the door. The following is a detailed summary of these requirements and precautions:1. Installation location and spacing requirementsArrangement below the door waistline: The door hinge is usually arranged below the door waistline. This is because the thickness of the door above the waistline decreases sharply and there is no space for hinge arrangement.Upper and lower hinge spacing: For economy cars, the hinge spacing of the front door is not less than 350mm, and the hinge spacing of the rear door is not less than 320mm, and the hinge spacing should be greater than 1/3 of the door length to improve the door stress condition.Axis position: The closer the hinge axis is to the door outer panel and the front end of the door, the more favorable it is. The axis close to the door outer panel can increase the gap after the door is fully opened to avoid interference; the axis close to the front end of the door can reduce the intrusion of the A and B pillars when the door rotates. However, it should be noted that the distance between the male hinge and the door outer panel should be no less than 12mm.2. Angle and gap requirementsHinge centerline angle: The hinge centerline is generally tilted forward and inward, with the inward angle required to be between 0~2°, and the forward and backward angles between 0~1.5° or 0~3° (different standards vary), which is subject to actual conditions.Maximum opening angle: The maximum opening angle of the hinge should be 3~5° larger than the maximum opening angle of the limiter to ensure that the door can be fully opened.Safety gap: During the entire movement of the door, the safety gap between the door and the surrounding parts is not less than 1.8mm; when the door moves to the maximum opening angle of the hinge, the safety gap between the door and the surrounding parts is not less than 6mm.3. Durability and anti-corrosion requirementsDurability: Automobile aluminum hinges need to undergo durability tests to ensure that they can maintain normal operation during long-term use. The test usually includes static load tests and durability tests, requiring the door hinge to withstand certain longitudinal and lateral loads and to still work normally after multiple opening and closing tests.Anti-corrosion treatment: The surface of the aluminum hinge should be treated with anti-corrosion to increase its service life and prevent safety hazards caused by corrosion.4. Installation process and adjustment methodInstallation bolts: The installation bolts of the door hinge are generally M8, and the passability of the sleeve size Φ22 needs to be fully considered. At the same time, it is necessary to ensure that the strength and structure of the column at the hinge installation position can meet the requirements.Adjustment method: If the door cannot be completely closed or there are problems such as sinking, the problem can be solved by adjusting the door coverage distance, depth and height. This usually requires precise adjustment using eccentric screws and adjustable height hinge bases.5. Other considerationsInstallation sequence: When installing aluminum hinges, you need to install them in the correct order and ensure that each component is installed in place.Fastener quality: Ensure that the fasteners used (such as bolts, nuts, etc.) are of reliable quality and meet the requirements of relevant standards.Regular inspection and maintenance: Regularly inspect and maintain the door hinges to ensure that they are in good working condition. If any abnormality or damage is found, it should be replaced or repaired in time.The installation of automotive aluminum hinges requires strict compliance with a series of unique requirements and precautions. These requirements and precautions cover installation location, angles and gaps, durability and corrosion protection, installation process and adjustment methods, and other related aspects. By following these requirements and precautions, you can ensure the safety, stability, and smooth opening and closing of the car door.
