A sealing device for automatic vehicle door protection

Abstract

The application discloses a sealing device for automatic vehicle door protection, which comprises a vehicle door, a power air bag assembly, an execution air bag assembly and a pressure limiting device; the power air bag assembly comprises a power air bag which is installed on a side wall of the vehicle door close to an A column; the execution air bag assembly comprises an execution air bag which is installed on a side wall of the vehicle door close to a B column; a pressure limiting hose is connected to the pressure limiting device; the pressure limiting hose is connected with the execution air bag and the power air bag; a crashproof silica gel strip is arranged outside the execution air bag; the power air bag is fixedly bonded with the vehicle door sealing rubber strip through special silica gel double-sided adhesive; the power air bag is integrated in a cavity in the vehicle door sealing rubber strip, and wiring is arranged in the vehicle door sealing rubber strip; and the structure is compact. Compared with the prior art, the sealing device has the advantages that the power air bag is directly driven to deform through a vehicle door opening and closing action, the execution air bag is driven to stretch and retract through air as a medium, no additional driving components such as a motor and a spring are needed, and the structure is simple and the action is reliable.

Description

Technical Field

[0001] This invention relates to the field of vehicle door sealing equipment, specifically a sealing device for automatic vehicle door protection. Background Technology

[0002] As a frequently opened and closed component, car doors are prone to collisions with adjacent vehicles, walls, or obstacles in narrow parking spaces and crowded parking lots, causing scratches and dents to the paint on the door edges and potentially damaging surrounding vehicles. To address this issue, current technologies generally employ fixed door bumper strips / blocks, typically made of elastic materials such as rubber, TPE, and PVC, which are glued or clipped to the door edges to provide cushioning protection when the door is opened.

[0003] Meanwhile, sealing door gaps and providing sound insulation and dust protection while driving are also important requirements for vehicle use. Existing sealing structures mostly rely on the original vehicle's sealing strips and lack an integrated design that links with collision protection. Although some high-end solutions use electrically or hydraulically driven telescopic protective structures, the overall system is complex and costly.

[0004] The fixed anti-collision strips are exposed for a long time, which disrupts the streamlined shape of the car body. They still protrude from the door surface after the door is closed, affecting the overall appearance of the vehicle and making it easy to accumulate dust and dirt.

[0005] It can only provide static buffering, without an automatic extension mechanism when the door is opened and an automatic retraction mechanism when the door is closed, thus limiting the timing and coverage of protection; most products only have anti-collision functions and do not take into account sealing, warning and other effects.

[0006] Ordinary rubber and plastic materials have poor weather resistance and are prone to hardening, cracking, and fading when exposed to sun and rain for a long time; adhesive-bonded materials are prone to peeling and curling at the edges, while snap-on materials are prone to loosening and making abnormal noises, and adhesive residue can easily remain after removal, damaging the paint surface. Summary of the Invention

[0007] The technical problem to be solved by this invention is to overcome the above-mentioned technical defects.

[0008] To solve the above problems, the technical solution of the present invention is: a sealing device for automatic vehicle door protection, comprising a vehicle door, a power airbag assembly, an actuator airbag assembly, and a pressure limiting device; The power airbag assembly includes a power airbag mounted on the side wall of the door near the A-pillar. The actuator airbag assembly includes an actuator airbag mounted on the side wall of the door near the B-pillar. A pressure-limiting hose is connected to the pressure-limiting device, and the pressure-limiting hose is connected to the actuator airbag and the power airbag. An anti-collision silicone strip is provided on the outer side of the actuator airbag. The power airbag adopts an independent structure or an integrated built-in structure with the door sealing strip. When an independent structure is adopted, the power airbag is bonded and fixed to the door sealing strip with special silicone double-sided adhesive, which is suitable for most vehicles and is a universal or general-purpose structure. When an integrated built-in structure is adopted, the power airbag is integrated into the internal cavity of the door sealing strip, and the pressure-limiting hose runs inside the door sealing strip. The structure is compact, highly integrated, and simple in appearance. This integrated built-in structure is adapted to the shape of the door sealing strip of specific models, which is a vehicle-specific structure. It can be mass-produced with vehicle manufacturers and used as a standard accessory for new cars. The durability of the silicone material used covers the entire life cycle of the vehicle.

[0009] Furthermore, the power airbag is installed on the door sealing strip near the door hinge side of the door, and the execution airbag is installed on the inner side of the door edge, near the outer side.

[0010] Furthermore, an arc-shaped anti-collision silicone strip is bonded to the outside of the airbag. When the door is closed, the door compresses the power airbag, and the air inside the airbag enters the airbag through the pressure-limiting hose, causing it to expand. This causes the anti-collision silicone strip to retract into the door gap. When the door is opened, the power airbag rebounds and sucks in air. The airbag deflates under atmospheric pressure, causing the anti-collision silicone strip to extend outward and wrap around the door edge, achieving automatic retraction and anti-collision protection. At the same time, when the door is closed, the airbag assembly fills and seals the door gap. The anti-collision silicone strip has built-in reflective luminous material to provide nighttime door opening warning.

[0011] Furthermore, the width of the power airbag is smaller than the width of the door sealing strip, and it is fixed to the door sealing strip by overlapping with special silicone double-sided adhesive.

[0012] Furthermore, the pressure limiting device is used to compensate for or release the internal air pressure of the device to counteract the effect of thermal expansion and contraction caused by changes in ambient temperature on the working air pressure.

[0013] Furthermore, the airbag is made of a thin, elongated silicone film airbag and an anti-collision silicone strip bonded together with a special silicone adhesive, and the length of the airbag is consistent with the height of the door edge.

[0014] The advantages of this invention compared to existing technologies are: This invention directly drives the deformation of the airbag through the opening and closing action of the car door, using air as a medium to drive the expansion and contraction of the airbag. It does not require additional driving components such as motors and springs, has a simple structure, and is reliable in operation. It can realize the automatic extension of the anti-collision protection strip when the door is opened and the automatic retraction when the door is closed. It does not damage the original appearance of the vehicle, and can effectively protect the door edge when the door is opened, avoiding paint damage caused by bumps when the door is opened. At the same time, it can also reduce collision damage to adjacent vehicles and obstacles.

[0015] When the doors are closed, the airbags and anti-collision silicone strips retract and fill the gaps in the doors, effectively sealing the gaps between the front and rear doors and between the doors and the C-pillar. This significantly improves the vehicle's sound insulation, noise reduction, and dust prevention, enhancing the in-vehicle driving environment.

[0016] The anti-collision silicone strip has built-in reflective luminous material, which can clearly show the outline of the door edge when the door is opened at night, serving as a clear warning and effectively reducing the safety risk of collision and scratch when opening the door at night.

[0017] Made entirely of silicone, the device utilizes silicone's good flexibility, resistance to high and low temperatures, and strong weather resistance to ensure a long service life, resistance to aging and deformation, and adaptability to different regions and seasons.

[0018] The pressure limiting device can compensate for or release the air pressure changes caused by thermal expansion and contraction, ensuring stable internal air pressure and making the expansion and contraction movements unaffected by ambient temperature, resulting in higher operational stability. Attached Figure Description

[0019] Figure 1 This invention relates to a three-dimensional sealing device for automatic car door protection. Figure 1 .

[0020] Figure 2 This invention relates to a three-dimensional sealing device for automatic car door protection. Figure 2 .

[0021] As shown in the picture: 1. Car door; 2. Power airbag; 3. Execution airbag; 4. Pressure limiting device; 5. Pressure limiting hose; 6. Anti-collision silicone strip. Detailed Implementation

[0022] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings. Identical components are indicated by the same reference numerals.

[0023] It should be noted that the terms “front,” “back,” “left,” “right,” “up,” and “down” used in the following description refer to the directions shown in the attached diagram, while the terms “inside” and “outside” refer to the directions toward or away from the geometric center of a specific component, respectively.

[0024] To make the content of this invention easier to understand, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings.

[0025] like Figures 1 to 2 As shown, a sealing device for automatic door protection includes a door 1, a power airbag assembly, an actuator airbag assembly, and a pressure limiting device 4.

[0026] The power airbag assembly includes a long strip of silicone power airbag 2. The power airbag 2 is installed on the door sealing strip of the door 1 near the A-pillar and near the door hinge. The width of the power airbag 2 is slightly smaller than the width of the door sealing strip. It is fixed to the original door sealing strip by using special silicone double-sided adhesive to achieve non-destructive installation.

[0027] The airbag assembly includes an airbag 3, which is installed on the side of the door 1 near the B-pillar, on the outer side of the door edge. The bottom of the airbag 3 is also fixed to the inner side of the door edge with special double-sided adhesive. The power airbag (2) adopts an independent structure or an integrated built-in structure with the door sealing strip. When the independent structure is adopted, the power airbag (2) is bonded to the door sealing strip with special silicone double-sided adhesive. It is suitable for most vehicles and is a universal or general-purpose structure. When the integrated built-in structure is adopted, the power airbag (2) is integrated into the cavity inside the door sealing strip. The pressure limiting hose (5) runs inside the door sealing strip. The structure is compact, highly integrated, and simple in appearance. This integrated built-in structure is adapted to the shape of the door sealing strip of a specific model. It is a special structure for specific vehicles and can be mass-produced with vehicle manufacturers. As a standard accessory for new cars, the silicone material used has durability that covers the entire life cycle of the vehicle.

[0028] The pressure limiting device 4 is connected to a pressure limiting silicone hose 5. One end of the pressure limiting hose 5 is connected to the power airbag 2, and the other end is connected to the execution airbag 3 through the pressure limiting device 4, forming a closed air passage.

[0029] The airbag 3 consists of a slender silicone film airbag and a crash barrier silicone strip 6 bonded together with a special silicone adhesive. The overall length of the airbag 3 is the same as the height of the door edge. The crash barrier silicone strip 6 has an arc-shaped cross-section and contains reflective luminous material for nighttime door opening warning.

[0030] In this embodiment, the power airbag 2, the execution airbag 3, the pressure limiting hose 5, and the anti-collision silicone strip 6 are all made of silicone material. By utilizing the good flexibility, high and low temperature resistance, and strong weather resistance of silicone, the device can be made to work stably under different ambient temperatures.

[0031] When door 1 is closed, door 1 and the door frame compress the power airbag 2, causing the power airbag 2 to be compressed. The compressed air inside flows into the actuator airbag 3 through the pressure limiting hose 5 and the pressure limiting device 4. The actuator airbag 3 inflates and pushes the outer bonded anti-collision silicone strip 6 into the gap of the door, so that the anti-collision silicone strip 6 is retracted and hidden in the gap of the door. From the outside of the car body, the surface of the door is flat and beautiful, with no protruding parts. At the same time, the retracted actuator airbag assembly and the anti-collision silicone strip 6 fill and seal the gap between the front and rear doors and the gap between the rear door and the C-pillar, which plays a role in sound insulation, noise reduction and dust prevention.

[0032] When the car door 1 is opened, the squeezing force of the car door 1 on the power airbag 2 disappears, and the power airbag 2 returns to its original position by its own elasticity. The volume of the airbag cavity increases and negative pressure is generated, thereby sucking in the air inside the execution airbag 3. The execution airbag 3 collapses and deforms under the action of external atmospheric pressure, causing the anti-collision silicone strip 6 to extend outward. The arc-shaped anti-collision silicone strip 6 surrounds the outside of the car door edge, forming a continuous door edge protection strip.

[0033] When a vehicle is parked or opened in a crowded parking lot or narrow parking space, the anti-collision silicone strip 6 prioritizes contact with adjacent vehicles, walls, or other obstacles. Through its flexible energy absorption, it avoids direct impact damage to the paint surface of the door edge and also reduces collision damage to adjacent vehicles. When the door is opened at night, the reflective luminous material inside the anti-collision silicone strip 6 makes the outline of the door edge clearly visible, serving as a warning to pedestrians and vehicles behind and reducing the risk of collision when the door is opened.

[0034] During operation, the pressure limiting device 4 automatically compensates for or releases air pressure based on the thermal expansion and contraction effect inside the air passage caused by changes in ambient temperature, maintaining stable air pressure inside the air passage and ensuring that the actuator airbag 3 can expand and contract normally under different temperature environments, thus ensuring reliable device operation.

[0035] This device is driven entirely by the mechanical energy of opening and closing the car door, using air as the transmission medium. It requires no external power supply or additional drive mechanism, has a simple structure, is easy to install, and is highly adaptable. It can be used in most existing car models and has multiple functions such as automatic anti-collision protection, sealing, sound insulation, dust prevention, and night warning, making it highly practical.

[0036] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A sealing device for automatic vehicle door protection, characterized in that: Includes the door (1), the power airbag assembly, the execution airbag assembly and the pressure limiting device (4); The power airbag assembly includes a power airbag (2), which is installed on the side wall of the door (1) near the A-pillar. The execution airbag assembly includes an execution airbag (3), which is installed on the side wall of the door (1) near the B-pillar. The pressure limiting device (4) is connected to a pressure limiting hose (5). The pressure limiting hose (5) is connected to the execution airbag (3) and the power airbag (2). The execution airbag (3) is provided with an anti-collision silicone strip (6) on its outer side. The power airbag (2) is bonded and fixed to the door sealing strip by special silicone double-sided adhesive. The power airbag (2) is integrated into the cavity inside the door sealing strip, and the pressure limiting hose (5) is routed inside the door sealing strip. The structure is compact and highly integrated.

2. The sealing device for automatic vehicle door protection according to claim 1, characterized in that: The power airbag (2) is installed on the door sealing strip of the door (1) near the door hinge, and the execution airbag (3) is installed on the inner side of the door (1) near the outer side.

3. The sealing device for automatic vehicle door protection according to claim 1, characterized in that: The outer side of the airbag (3) is bonded with an arc-shaped anti-collision silicone strip (6). When the door (1) is closed, the door (1) compresses the power airbag (2). The air in the airbag enters the airbag (3) through the pressure limiting hose (5) to make it expand, which causes the anti-collision silicone strip (6) to contract into the gap of the door. When the door (1) is opened, the power airbag (2) rebounds and returns to its original position and sucks in air. The airbag (3) collapses under atmospheric pressure, causing the anti-collision silicone strip (6) to extend outward and hug the edge of the door, realizing automatic telescopic anti-collision protection. At the same time, when the door is closed, the airbag assembly fills and seals the gap of the door. The anti-collision silicone strip (6) has built-in reflective luminous material to realize nighttime door opening warning.

4. A sealing device for automatic vehicle door protection according to claim 1, characterized in that: The width of the power airbag (2) is smaller than the width of the door sealing strip, and it is fixed to the door sealing strip by overlapping with special silicone double-sided adhesive.

5. A sealing device for automatic vehicle door protection according to claim 1, characterized in that: The pressure limiting device (4) is used to compensate for or release the internal air pressure of the device in order to counteract the effect of thermal expansion and contraction caused by changes in ambient temperature on the working air pressure.

6. A sealing device for automatic vehicle door protection according to claim 1, characterized in that: The execution airbag (3) is made of a thin silicone film airbag and a collision-resistant silicone strip (6) bonded together with special silicone adhesive. The length of the execution airbag (3) is consistent with the height of the door edge.

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