Detailed explanation of the structure and function of the car hinge_Hinge Knowledge

Exploring the Importance of Car Door Hinges

When it comes to evaluating the quality of a car, paying attention to the details is crucial. In this article, we will delve into the significance of one particular detail – the car door hinge. The door hinge serves the purpose of connecting the body and the door, and it is composed of at least three essential parts.

Firstly, there are the body parts that connect to the car body. Secondly, there are the door parts that connect to the door itself. Lastly, there are other components that ensure the door hinges can facilitate smooth opening and closing movements.

Car hinges come in various types, and they can be classified based on different standards. Let us now provide a brief introduction to some commonly used classification standards for car hinges.

Classification by Location:

The requirements for hinges differ depending on their positions, which naturally leads to different hinge types. Based on their respective positions, car hinges can be divided into three primary types: hood hinges, side door hinges, and rear door hinges.

Hood hinges, as the name suggests, are used to connect the hood (or bonnet) and the car body. The hood usually opens upwards and is held horizontally. Therefore, hood hinges do not require high axial support. However, due to their location in the engine compartment and lower part of the hood, these hinges need to consider factors such as space constraints and pedestrian protection. Consequently, they typically have an elongated shape.

Since the hood is typically secured by a strut or pneumatic spring after being opened, the hood hinge usually does not need additional constraints or limiters. Moreover, the hood only has two states – fully closed or fully opened – thus limiting the design constraints. Additionally, the hood opens relatively infrequently compared to other doors, resulting in lower reliability requirements for its hinges.

Side door hinges are the most complex type of car hinges. They connect the side door to the car body and carry the weight of the entire door. Therefore, they require high axial strength. Moreover, since side doors are usually installed vertically on cars, the side door hinges need to support the weight and movement of the door effectively. For this reason, side door hinges are compact in size and typically have a cubic shape.

Side doors can open at any angle, necessitating the use of limiters to hold them securely. Opening and closing the side door frequently can also pose safety risks. For instance, when driving uphill or downhill, an improper opening force may cause the door to automatically increase its angle, resulting in safety hazards. To mitigate this, side door hinges are inclined in both a backward and inward direction, ensuring that the door remains secure while in operation. The angle of inclination typically ranges from 0-3°.

Ideally, side door hinges should be installed with a significant distance between them. However, technical considerations such as structure and coating limit the distance between hinges. Consequently, the recommended distance between the two hinges is at least one-third of the door width.

Rear door hinges, as the name suggests, connect the rear door to the car body. These hinges are similar to hood hinges, as they do not require high axial strength. Additionally, rear doors can open in two ways: horizontally or vertically (in the case of sedans and hatchbacks).

Classification by Manufacturing:

Car hinges can also be classified based on the method of manufacturing – either stamping or forging.

Stamping hinges are composed of stamped sheet metal parts. They have the advantage of being affordable, easy to process, and lightweight. However, they have poorer axial positioning accuracy, higher looseness, and weaker axial strength compared to other hinge types.

Forged hinges, on the other hand, are produced using forging processes. These hinges are smaller in size, have higher strength, and offer better axial orientation accuracy. However, they are more expensive and weigh more than stamping hinges.

Classification by Structure:

Car hinges can be further categorized based on their structure – either integrated hinges or non-integrated hinges.

Integrated hinges combine the functions of both hinges and limiters. They eliminate the need for a separate stopper, making them more convenient for design and installation. However, integrated hinges tend to be larger, heavier, and more costly compared to standard hinges. There are two types of integrated hinges: torsion bar type and spring type. The spring type uses a spring-driven limiter, while the torsion bar type utilizes a torsion bar to drive the limit mechanism. The cost of the spring type is lower, but its limiting capability is inferior to that of the torsion bar type.

Non-integrated hinges, also known as split hinges, are the most common hinge type. They lack a limiter function and are typically used in conjunction with other components, such as pneumatic or torsion springs.

In summary, car hinges play a crucial role in automobile design and functionality. Due to the wide assortment of door styles, there are numerous types of car hinges available. This article has provided an overview of common classifications for car hinges, focusing on their positions and structures. As a reputed provider, we prioritize impeccable customer service and ensure that our products meet high standards through rigorous certifications.