Car support plate - What is it used for in the water channel?
"Car support plate - for water channels" usually refers to a component in a car that has both structural support and drainage guiding functions, commonly found in the vehicle's drainage system. According to public information, such components have different names and functions at different locations, and their core function is to support the drainage channel structure and guide the water to be discharged outside the vehicle, preventing water from corroding or seeping into the interior.
Main types and functions
Door drip tray bracket: Supports the door drip tray and guides the rainwater through the deflector to the edge of the door for discharge, preventing the water from flowing back into the interior and protecting metal parts such as hinges and lock blocks.
Rainwater collection plate under the front windshield (or called rain deflector, support plate): Located at the bottom of the front windshield, it guides the water scraped by the wiper through the drainage holes to the underside of the vehicle, while blocking debris from entering the engine compartment and optimizing aerodynamics.
Chassis drainage hole support structure: Some models have drainage holes with rubber plugs near the support points of the chassis jack, and the surrounding structure can be regarded as a type of support plate, used to quickly discharge water after getting wet.
Special support plate (patent design): Such as the "car support plate with water flow guiding structure" mentioned in the utility model patent, which has a water collection chamber and an outlet pipe, used to collect and discharge wastewater from different parts, improving drainage stability.
Daily maintenance suggestions
Regularly check if the drainage holes are blocked by leaves, sand, etc.;
Use iron wire or syringes to clean the drainage channels;
Avoid direct spraying of high-pressure water guns on rubber seals to prevent damage.
Although these support plates are small, they are crucial for vehicle waterproofing, rust prevention, and comfort.
In the vehicle structure, "support plate for water channel function" usually refers to components that have both structural support and drainage guiding functions. According to public information, such designs are commonly found in the following key areas:
Main types and functions
Rainwater collection plate under the front windshield (or called windshield rain deflector, rain scraper water deflector)
Located at the bottom of the front windshield, covering the upper part of the engine compartment.
Core function:
Guides the rainwater through the side drainage holes to be discharged, preventing water from seeping into the engine compartment or air conditioning intake;
Blocks debris, such as leaves and dust, from entering the engine compartment;
Optimizes aerodynamics, reducing wind resistance;
Some models have rain/illumination sensor installation positions .
Door drip tray bracket
Supports the drip tray at the edge of the door, ensuring its shape is stable and guiding the rainwater.
Core function:
Physically supports the drip tray, avoiding deformation due to vibration when the door is opened and closed;
Guides the rainwater through the deflector to the edge of the door for discharge, preventing backflow into the interior;
The material is mostly galvanized steel or aluminum, balancing strength and corrosion resistance .
Water tank frame support plate
Installed under the lower part of the water tank frame, mainly serving as a fixation and support function. Some designs may integrate drainage channels to assist in guiding rainwater or condensation water .
Special support plate with water flow guiding structure (patent design)
Contains a water collection chamber, an inlet pipe, and an outlet pipe, capable of collecting and discharging wastewater from different parts of the vehicle, improving drainage stability and passenger comfort .
Typical application scenarios
Driving in rain: The rainwater collection plate ensures smooth drainage under the front windshield, preventing water film from blocking the view .
Wading or washing the car: The chassis drainage holes (such as near the jack support points of BMW models) can quickly discharge water .
Rainy areas： The anti-rust design of the door drip tray bracket is crucial for prolonging the life of the door .
Maintenance suggestions
Regularly check if the drainage holes of the rainwater collection plate are blocked， and use iron wire or syringes to clear them .
Avoid direct spraying of high-pressure water guns on the roof or the water drip tray of the door， to prevent leakage after the rubber seal ages .
If the interior floor is damp， it may be related to the poor drainage of the drip tray or rainwater collection plate， and timely maintenance is required . If you need specific diagrams of the support plates or drainage structures for the vehicle models, you can refer to the detailed model pages on PCCar.com.
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