Automobile door wading sealing structure and sealing air pressure control method thereof

Abstract

The invention relates to an automobile door wading sealing structure and a sealing air pressure control method thereof.The automobile door wading sealing structure comprises a first sealing strip installed on an automobile door inner plate and a door opening sealing strip installed on a top spigot of a side wall metal plate, and the door opening sealing strip is arranged on the inner side of the first sealing strip; the first sealing strip and the door opening sealing strip are of a closed annular structure, three sealing strips are arranged below the outer side of the first sealing strip, a channel between the three sealing strips and the first sealing strip is a wet area, a semi-wet area is arranged between the first sealing strip and the door opening sealing strip, and the outer side of the semi-wet area is pressurized and sealed through an automatic pressure regulating system of the first sealing strip. The inner side of the semi-wet area is sealed through a door opening sealing strip, the automatic pressure regulating system comprises an air pipe, an air pump, an electromagnetic valve and a pressure sensor, the first sealing strip comprises a mounting base, a first bubble pipe and a reinforcing core pipe, the air pipe connected with the reinforcing core pipe is connected with the air pump, and the air pump is provided with the electromagnetic valve. And the pressure sensor is embedded in the [-shaped mounting base. By means of the controllable inflation pressure regulating system, the reliable and convenient floating sailing function of the vehicle is achieved, and the safety of floating sailing of the vehicle is improved.

Description

Technical Field

[0001] This invention relates to the field of automotive sealing technology, specifically to a water-sealing structure for automotive doors and a method for controlling the sealing air pressure, used for sealing automotive doors during navigation and emergency buoyancy. Background Technology

[0002] With the development of automotive technology, people have put forward higher and higher requirements for the multi-functionality of automobiles. In the field of water wading, major car manufacturers have put forward higher requirements for the wading depth of automobiles; some luxury models even put forward the requirements for emergency floating and car navigation on the water surface. This requirement puts forward higher requirements for the sealing system of automobile doors. Conventional door seals are not suitable because they have insufficient sealing force and cannot provide the sealing force required for floating.

[0003] The market typically uses methods to enhance the sealing force of door weatherstripping to improve sealing. However, this leads to a significant increase in the force required to open and close the door, resulting in poor door closing feel and difficulty in closing the door smoothly. Therefore, there is an urgent need to design a water-resistant sealing structure for automotive doors and a method for controlling the sealing air pressure. Summary of the Invention

[0004] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a water-sealing structure for automobile doors and a method for controlling the sealing air pressure. Through a controllable inflation and pressure regulation system, the invention enables reliable and convenient floating navigation of vehicles, thereby improving the safety of vehicles floating in water.

[0005] The objective of this invention is achieved as follows: A water-sealing structure for automotive doors includes a first sealing strip installed on the inner panel of the door and a door opening sealing strip installed on the top stop of the side panel sheet metal. The door opening sealing strip is located inside the first sealing strip, and the first sealing strip and the door opening sealing strip form a closed annular structure. The structure is characterized by: three sealing strips located below the outer side of the first sealing strip; the channel between the three sealing strips and the first sealing strip is a wet zone; the area between the first sealing strip and the door opening sealing strip is a semi-wet zone; the outer side of the semi-wet zone is pressurized and sealed by an automatic pressure regulating system of the first sealing strip; and the inner side of the semi-wet zone is sealed by the door opening sealing strip. The automatic pressure regulating system includes an air pipe, an air pump, a solenoid valve, and a pressure sensor. The first sealing strip includes a mounting base, a first-stage bubble tube, and a reinforcing core tube. The air pipe connected to the reinforcing core tube is connected to the air pump, which is equipped with a solenoid valve. The pressure sensor is embedded in a U-shaped mounting base.

[0006] Preferably, the first-stage bubble tube abuts against the side plate sheet metal, the first-stage bubble tube is provided with a reinforcing core tube, the reinforcing core tube is floatingly disposed in the first-stage bubble tube, the air tube is an extension of the reinforcing core tube, one end of the air tube is connected to the first-stage bubble tube, and the other end extends out of the first-stage bubble tube, and the first-stage bubble tube is provided with a through hole corresponding to the air tube.

[0007] Preferably, the door opening sealing strip includes a sealing bubble tube and an installation part. The inverted U-shaped installation part is inserted into the top stop of the side panel sheet metal. The top of the inverted U-shaped installation part is provided with butyl self-adhesive, and the inner side wall of the installation part near the sealing bubble tube is provided with high-foaming sponge adhesive.

[0008] Preferably, the reinforcing core tube can be a closed annular structure or a strip structure with both ends molded and sealed.

[0009] Preferably, the sealing surface of the mounting base near the inner panel of the door is covered with heat-sensitive adhesive tape.

[0010] Preferably, the sealing bubble tube abuts against the door skirt panel installed on the inner panel of the door, and the outer surface of the sealing bubble tube in contact with the door skirt panel is provided with multiple arc-shaped protrusions.

[0011] Preferably, the sealed bubble tube is provided with a support rib, which divides the sealed bubble tube into two bubble chambers.

[0012] Preferably, the sidewall of the sealed bubble tube has arc-shaped recesses at both ends corresponding to the supporting rib.

[0013] A method for controlling the air pressure of a car door's water-sealing seal, employing the aforementioned car door water-sealing structure, includes the following steps: The vehicle is equipped with an emergency buoyancy control module. A water level sensor is installed inside the door. The water level sensor, pressure sensor, and solenoid valve are all electrically connected to the emergency buoyancy control module. Multiple water level sensors are set around the perimeter of the vehicle. The emergency buoyancy control module collects wading information from the water level sensors. When the emergency buoyancy control module detects that the water level exceeds the normal limit, it transmits a signal to the solenoid valve and controls the air pump to start inflation, automatically pressurizing the first sealing strip to reach the first wading pressure and start normal cruising. When the pressure sensor detects insufficient pressure, it automatically increases the inflation volume to compensate for the pressure loss. After the buoyancy test is complete, the emergency buoyancy control module detects a drop in water level and sends a signal to the solenoid valve, controlling the air pump to release air and automatically depressurize the first sealing strip, thus exiting the emergency buoyancy state and opening the doors to drain the water from the wet and semi-wet areas outside the vehicle.

[0014] Preferably, the emergency floating control module is also equipped with a manual switch. When the vehicle is ready to navigate on the water, the driver can manually turn on the pressure regulating system through the manual switch to manually pressurize the first sealing strip. When the pressure is monitored to meet the wading requirements, the vehicle can pass. After passing, the air pump releases air and reduces pressure, the sealing surface is reset, the vehicle exits the water navigation state, and the door is opened to drain the water in the wet and semi-wet areas outside the vehicle.

[0015] The beneficial effects of this invention are: By adding a controllable inflatable reinforcing core tube inside the first sealing strip, the core tube is inflated according to a program when the vehicle is floating on water. This causes the core tube to expand and act on the inner wall of the first sealing strip, significantly increasing the pressure on the sealing surface of the first sealing strip and achieving a reliable door seal. When the vehicle is in normal driving conditions, the gas inside the reinforcing core tube is extracted to maintain its normal stress state, allowing the door to achieve normal sealing and opening and closing, thus improving the safety of the vehicle while floating on water. By using air pressure sensors and pressure sensors, the inflation pressure of the sealing system and the contact pressure of the sealing surface are monitored in real time while the vehicle is floating on water. When a seal failure or a drop in air pressure occurs, gas is replenished in time and a warning signal is sent to the vehicle user to ensure the safety of the vehicle floating on water. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a water-sealing structure for an automobile door according to the present invention.

[0017] Figure 2 This is a schematic diagram showing the connection between the first sealing strip and the automatic pressure regulating system.

[0018] Figure 3 This is a schematic diagram of the cross-section of the first sealing strip (with the reinforcing core tube uninflated).

[0019] Figure 4 This is a schematic diagram of the cross-section of the first sealing strip (with the reinforcing core tube in an inflated state).

[0020] Figure 5 This is a schematic diagram of the cross-section of the door opening sealing strip.

[0021] The components include: 1. First sealing strip; 1.1. Mounting base; 1.2. First foam tube; 1.3. Reinforcing core tube; 1.4. Fiberglass thread; 1.5. Heat-sensitive tape; 2. Door opening sealing strip; 2.1. Sealing foam tube; 2.1.1. Arc-shaped protrusion; 2.2. Sealing lip; 2.3. Mounting part; 2.4. Butyl self-adhesive; 2.5. High-density foam adhesive; 2.6. Support rib; 2.7. Arc-shaped recess; 2.8. Three sealing strips; 3. Outer door panel; 4. Inner door panel; 5. Door skirt panel; 6. Side panel sheet metal; 7. Air pipe; 8. Air pump; 9. Solenoid valve; 10. Pressure sensor; 11. Detailed Implementation

[0022] See Figure 1-5This invention relates to a water-sealing structure for automotive doors, comprising a primary sealing strip 1 installed on the inner door panel 5 and a door opening sealing strip 2 installed on the side panel sheet metal 7. The door opening sealing strip 2 is disposed inside the primary sealing strip 1. The primary sealing strip 1 and the door opening sealing strip 2 form a closed annular structure. The primary sealing strip 1 is equipped with an automatic pressure regulating system. The primary sealing strip 1 includes a mounting base 1.1, a primary bubble tube 1.2, a reinforcing core tube 1.3, and fiberglass wire 1.4. The mounting base 1.1 is U-shaped. A heat-sensitive adhesive tape 1.5 is attached to the sealing surface of the mounting base 1.1 near the inner door panel 5. The mounting base 1.1 is connected to the primary bubble tube 1.2, which abuts against the side panel sheet metal 7. The reinforcing core tube 1.3 is provided inside the primary bubble tube 1.2. The reinforcing core tube 1.3 is floatingly disposed inside the first-stage bubble tube 1.2. The reinforcing core tube 1.3 is connected to an automatic pressure regulating system, which includes an air pipe 8, an air pump 9, a solenoid valve 10, and a pressure sensor 11. The air pipe 8 is an extension of the reinforcing core tube 1.3, with one end connected to the first-stage bubble tube 1.2 and the other end extending out of the first-stage bubble tube 1.2. The first-stage bubble tube 1.2 has a through hole corresponding to the air pipe 8. The air pipe 8 is connected to the air pump 9, which is equipped with a solenoid valve 10. The pressure sensor 11 is embedded in a U-shaped mounting base 1.1 and is used to monitor the sealing force of the first-stage sealing strip 1 to determine whether the sealing force can meet the requirements of wading depth and navigation. The automatic pressure regulating system controls the gas pressure inside the reinforcing core tube 1.3 to achieve automatic pressurization and sealing.

[0023] The air pump outlet is also equipped with an air pressure sensor to detect the air pressure entering the reinforcing core tube and avoid excessive or insufficient pressure.

[0024] The fiberglass thread 1.4 is embedded in the mounting base 1.1 to prevent dimensional shrinkage.

[0025] The reinforcing core tube 1.3 can be a closed annular structure or it can be molded and sealed at both ends, with the air tube 8 connected to the reinforcing core tube 1.3.

[0026] The door opening sealing strip 2 includes a sealing bubble tube 2.1, a sealing lip 2.2, and an installation part 2.3. The inverted U-shaped installation part 2.3 is inserted into the top stop of the side panel 7. The installation part 2.3 is fitted with a skeleton 2.4. The inner side walls of the installation part 2.3 are provided with several inverted teeth. The number and shape of the inverted teeth on both sides are different. The irregular arrangement of the teeth prevents the door opening sealing strip 2 from falling off. The top of the inverted U-shaped installation part 2.3 is provided with butyl self-adhesive 2.5. The inner side wall of the installation part 2.3 near the sealing bubble tube 2.1 is provided with high-foaming sponge adhesive 2.6. The high-foaming sponge adhesive 2.6 makes the installation part 2.3 fit against the side of the side panel 7 to buffer vibration. The butyl self-adhesive 2.5 makes the contact surface between the installation part 2.3 and the top stop of the side panel 7 waterproof and airproof, providing long-term weather-resistant sealing. The combined action of butyl self-adhesive 2.5 and high-foaming sponge adhesive 2.6 forms the seal at the top stop of the side panel sheet metal 7.

[0027] The sealing bubble tube 2.1 abuts against the door skirt panel 6 installed on the inner door panel 5. The outer surface of the sealing bubble tube 2.1 in contact with the door skirt panel 6 is provided with multiple arc-shaped protrusions 2.1.1. The setting of the arc-shaped protrusions 2.1.1 increases the sealing pressure between the lower door skirt panel 6 and the door opening sealing strip 2, forming multiple tiny sealing water lines to prevent water under high pressure from seeping into the car.

[0028] The sealing tube 2.1 and sealing lip 2.2 are made of EPDM expanding foam, and the mounting part 2.3 is made of EPDM solid adhesive.

[0029] The sealing bubble tube 2.1 is provided with a support rib 2.7, which divides the sealing bubble tube 2.1 into two bubble chambers, improving the durability of the sealing bubble tube. The side wall of the sealing bubble tube 2.1 is provided with arc-shaped recesses 2.8 at both ends of the support rib 2.7 to guide the orderly deformation of the sealing bubble tube 2.1, protect the support rib 2.7, and provide pre-deformation space.

[0030] Three sealing strips 3 are located below the outer side of the first sealing strip 1. These three sealing strips 3 reduce water pressure. The channel between the three sealing strips 3 and the first sealing strip 1 is a wet zone, allowing water to enter and serving as the main drainage channel. The area between the first sealing strip 1 and the doorway sealing strip 2 is a semi-wet zone, sealed by the automatic pressure regulating system of the first sealing strip 1. When the vehicle is in emergency floating or navigating, the automatic pressure regulating system activates to pressurize the reinforcing core tube 1.3 inside the first sealing strip 1, achieving a certain air pressure to ensure a seal. The doorway sealing strip 2, located inside the first sealing strip 1, acts as a second line of defense, preventing a small amount of water from entering the vehicle.

[0031] A method for controlling the air pressure of a car door's water-resistant seal includes the following steps: The vehicle is equipped with an emergency buoyancy control module. A water level sensor is installed inside the door. The water level sensor, pressure sensor 11, and solenoid valve 10 are all electrically connected to the emergency buoyancy control module. Multiple water level sensors are set around the vehicle and at the same height. The emergency buoyancy control module collects the wading information from the water level sensors. When the emergency buoyancy control module detects that the water level exceeds the normal limit, it transmits a signal to the solenoid valve 10 and controls the air pump 9 to start inflation, automatically pressurizing the first sealing strip 1 to reach the first wading pressure and start normal cruising. When the pressure sensor 11 detects insufficient pressure, it automatically increases the compensation pressure (compensation inflation) according to the pressure loss situation. After the water floatation is completed, the emergency water floatation control module detects the water level drop, transmits the signal to the solenoid valve, and controls the air pump 9 to release air, automatically completing the decompression of the first sealing strip 1, thereby exiting the emergency water floatation state, opening the door to drain the water in the wet and semi-wet areas outside the vehicle.

[0032] The emergency buoyancy control module is also equipped with a manual switch. When the vehicle is preparing to navigate on water, such as on a large flooded road or in a puddle, the driver can manually activate the pressurization system via the manual switch to manually pressurize the first sealing strip. Once the pressure is monitored to meet the wading requirements, the vehicle can proceed. After passage, the air pump releases air and reduces pressure, the sealing surface resets, and the vehicle exits the water navigation state. The doors are then opened to drain the water from the wet and semi-wet areas outside the vehicle.

[0033] In addition to the above embodiments, the present invention also includes other embodiments. All technical solutions formed by equivalent transformation or equivalent substitution should fall within the protection scope of the claims of the present invention.

Claims

1. A water-sealing structure for an automobile door, comprising a first sealing strip installed on the inner panel of the door and a door opening sealing strip installed on the top stop of the side panel sheet metal, wherein the door opening sealing strip is disposed inside the first sealing strip, and the first sealing strip and the door opening sealing strip form a closed annular structure, characterized in that: The outer side of the first sealing strip is provided with three sealing strips. The channel between the three sealing strips and the first sealing strip is a wet zone, and the area between the first sealing strip and the door opening sealing strip is a semi-wet zone. The outer side of the semi-wet zone is pressurized and sealed by the automatic pressure regulating system of the first sealing strip, and the inner side of the semi-wet zone is sealed by the door opening sealing strip. The automatic pressure regulating system includes an air pipe, an air pump, a solenoid valve, and a pressure sensor. The first sealing strip includes a mounting base, a first bubble tube, and a reinforcing core tube. The air pipe connected to the reinforcing core tube is connected to the air pump. The air pump is equipped with a solenoid valve, and the pressure sensor is embedded in the U-shaped mounting base.

2. The water-sealing structure for a car door according to claim 1, characterized in that: The first-stage bubble tube abuts against the side panel sheet metal. A reinforcing core tube is provided inside the first-stage bubble tube. The reinforcing core tube is floatingly disposed inside the first-stage bubble tube. The air tube is an extension of the reinforcing core tube. One end of the air tube is connected to the first-stage bubble tube, and the other end extends out of the first-stage bubble tube. The first-stage bubble tube has a through hole corresponding to the air tube.

3. The water-sealing structure for an automobile door according to claim 1, characterized in that: The door opening sealing strip includes a sealing bubble tube and an installation part. The inverted U-shaped installation part is inserted into the top stop of the side sheet metal. The top of the inverted U-shaped installation part is provided with butyl self-adhesive. The inner wall of the installation part near the sealing bubble tube is provided with high-foaming sponge adhesive.

4. The water-sealing structure for a car door according to claim 2, characterized in that: The reinforcing core tube can be a closed annular structure or a strip structure with both ends molded and sealed.

5. The water-sealing structure for a car door and its sealing air pressure control method according to claim 1, characterized in that: The mounting base is fitted with heat-sensitive adhesive tape on the sealing surface near the inner panel of the door.

6. The water-sealing structure for an automobile door according to claim 3, characterized in that: The sealing bubble tube abuts against the door skirt panel installed on the inner panel of the door, and the outer surface of the sealing bubble tube in contact with the door skirt panel is provided with multiple arc-shaped protrusions.

7. The water-sealing structure for an automobile door according to claim 3, characterized in that: The sealed bubble tube is provided with a support rib, which divides the sealed bubble tube into two bubble chambers.

8. The water-sealing structure for an automobile door according to claim 7, characterized in that: The sidewall of the sealed bubble tube has arc-shaped recesses at both ends corresponding to the supporting ribs.

9. A method for controlling the air pressure of a car door's water-sealing seal, characterized in that: The water-sealing structure for a car door according to any one of claims 1-8 includes the following steps: The vehicle is equipped with an emergency buoyancy control module. A water level sensor is installed inside the door. The water level sensor, pressure sensor, and solenoid valve are all electrically connected to the emergency buoyancy control module. Multiple water level sensors are set around the perimeter of the vehicle. The emergency buoyancy control module collects wading information from the water level sensors. When the emergency buoyancy control module detects that the water level exceeds the normal limit, it transmits a signal to the solenoid valve and controls the air pump to start inflation, automatically pressurizing the first sealing strip to reach the first wading pressure and start normal cruising. When the pressure sensor detects insufficient pressure, it automatically increases the inflation volume to compensate for the pressure loss. After the buoyancy test is complete, the emergency buoyancy control module detects a drop in water level and sends a signal to the solenoid valve, controlling the air pump to release air and automatically depressurize the first sealing strip, thus exiting the emergency buoyancy state and opening the doors to drain the water from the wet and semi-wet areas outside the vehicle.

10. A method for controlling the air pressure of a car door's water-sealing seal according to claim 9, characterized in that: The emergency floating control module is also equipped with a manual switch. When the vehicle is ready to navigate on the water, the driver can manually turn on the pressure regulating system and manually pressurize the first sealing strip. When the pressure is monitored to meet the requirements for wading, the vehicle can pass. After passing, the air pump releases air and reduces pressure, the sealing surface is reset, the vehicle exits the water navigation state, and the doors are opened to drain the water in the wet and semi-wet areas outside the vehicle.

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