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In modern Mercedes-Benz cars, electronic systems are used in a wide range of applications, including:
Driver assistance systems: such as adaptive cruise control, automatic parking assistance, collision warning systems, etc.
Infotainment systems: including multimedia entertainment, navigation, voice recognition and in-car connectivity.
Autonomous driving technologies: sensors, LIDAR, cameras, control modules, etc.
In-vehicle electrical system: including battery management system (BMS), powertrain control module, etc.
Comfort and safety systems: heated seats, seat adjustment, power windows, climate control, etc.
Fasteners are needed in electronic systems to ensure the stability and long-term reliability of their various modules. Fasteners and clips must have good durability, adaptability and precision to adapt to the complex environmental conditions (e.g. temperature changes, vibration, humidity, etc.) during vehicle operation.
In the electronic system of Mercedes-Benz automobile, clips and fasteners play various important roles:
Fixing electronic modules: Many electronic components (e.g. ECU, sensors, control units, etc.) need to be fixed to the car body or bracket by fasteners. These fasteners ensure the stability of the electronic components during driving and prevent the modules from loosening or being damaged due to vibration or collision.
Cable and wire management: The electronic systems in Mercedes-Benz vehicles usually include a large number of cables and wires, which need to be managed and secured by means of clips and fasteners. Appropriate fasteners ensure that cables and wires are arranged neatly and securely, preventing them from becoming loose or broken.
Module interconnections and interfaces: Modern Mercedes-Benz vehicles use a modular design in which individual electronic modules are connected and secured to the body frame or other components by means of fasteners. By means of a precise fastening system, the electronic modules can be accurately interfaced with other systems and components of the vehicle to ensure unobstructed transmission of signals and power between the modules.
Different types of fasteners are used for different electronic components, mainly including:
Plastic Clips:
These clips are widely used in the interior of Mercedes-Benz cars and in the fixing of electronic modules. They are often used for lightweight components and parts that need to be quickly installed or removed, such as the center console, door trim panels, seat adjustment controls, etc.
Example of application: The instrument panel of the Mercedes-Benz S-Class uses a variety of plastic clips to ensure the secure mounting of the in-car entertainment system and the instrument display module.
Spring Clips:
Spring Clips are often used to secure heavy or high-precision electronic components, providing additional clamping force. They are commonly used to secure large electronic modules and sensors, especially in high vibration areas such as underbody or in the engine compartment.
Application example: The on-board sensors and LiDAR modules of the Mercedes-Benz E-Class are secured with spring-loaded clips to prevent the modules from loosening due to vibrations at high speeds.
Expansion Clips:
Expansion clips are used to secure components after installation by means of an expansion mechanism, and are often used for components that require strong fixation, such as vehicle control units (ECUs) and other heavy electronic equipment.
Application example: The powertrain control module of the Mercedes-Benz GLE is fixed by means of expansion clips, which ensures the stability of the electronic module over a long period of time.
Bolts and Nuts:
For large electronic modules, especially those requiring high-strength and high-precision fixing, Mercedes-Benz uses conventional screws and nuts. They are often used in conjunction with other clips or clamps to ensure a solid connection of electronic components.
Application example: The battery management system (BMS) module and on-board power supply system of the Mercedes-Benz S-Class are fixed with bolts to ensure the long-term stability and safety of these critical components.
In the Mercedes-Benz automotive electronics system, fasteners not only have to provide fixation, but also need to fulfill the following functional requirements:
Vibration resistance: electronic modules are usually installed in parts with high vibration, such as the body, engine compartment, chassis and so on. Fasteners must have the ability to resist vibration to prevent the electronic module from loosening or damage due to vibration.
Temperature resistance: the working environment of automotive electronic components has a large change in temperature. Fasteners need to withstand extreme changes in high or low temperatures, especially in the engine compartment or near the on-board battery.
Electromagnetic shielding (EMI): In many electronic modules, fasteners and clips need to have some electromagnetic shielding to prevent electromagnetic interference (EMI) from affecting other electronic components of the vehicle.
Corrosion resistance: Vehicles are exposed to moisture, salt, dust and other environmental factors for long periods of time, so the materials used for fasteners must have good corrosion resistance, especially when they are used in components outside the vehicle.
With the increase of intelligence and automation level, Mercedes-Benz automotive electronic system faces many new challenges, and also puts forward higher requirements on the design of clips and fasteners:
High Density Integration: With the increasing integration of automotive electronic systems, fasteners need to provide stronger fixing force in limited space to adapt to high-density layout.
Modular design: The modular design of Mercedes-Benz vehicles requires electronic components to be assembled and replaced quickly and more efficiently, and the design of clips and fasteners needs to take into account convenient disassembly and reassembly.
Intelligent Sensors and Precision Requirements of Autonomous Driving System: The sensors used in autonomous driving technology require extremely high installation position and precision. Fasteners need to be designed not only to ensure fixation, but also to ensure that the sensors respond accurately to the external environment.
In the future, with the increasing complexity of Mercedes-Benz automotive electronic systems, smart fasteners may become a key technology. Smart fasteners not only secure electronic modules, but also monitor the fastening status (e.g., torque, loosening detection, etc.) through sensors to ensure the safety of electronic components. In addition, with advances in automated assembly technology, fasteners will be installed more efficiently and accurately, reducing human error.
