Waterproof sealing device of automobile electric sliding door
By coordinating the support mechanism, pressurizing mechanism, and roller coating mechanism, the problem of unstable sealing of electric sliding door sealing devices under temperature difference and dynamic pressure changes is solved, realizing automatic adjustment and precise sealing of electric sliding doors, and improving sealing performance and service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YANCHENG SHILIANKAI PRECISION ELECTROMECHANICAL MFG CO LTD
- Filing Date
- 2025-05-26
- Publication Date
- 2026-04-24
AI Technical Summary
Existing automotive electric sliding door sealing devices exhibit unstable sealing performance under temperature and dynamic pressure variations, failing to achieve automatic adjustment. This results in changes in sealing gaps, delayed rebound, and localized contact pressure deviations, impacting waterproof reliability and service life.
The system employs a support mechanism, a pressurizing mechanism, and a roller coating mechanism. Through the cooperation of the lifting motor disc and the pressurizing motor disc, it achieves automatic adjustment and precise sealing of the electric sliding door. Combined with the roller coating material coverage driven by the flip motor, it ensures a good sealing effect.
It enables automatic adjustment and precise sealing of electric sliding doors under temperature difference and dynamic pressure changes, improves sealing performance and service life, reduces the risk of water backflow, and enhances the practicality of the sealing device.
Smart Images

Figure CN224159154U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electric sliding door sealing technology, and in particular to a waterproof sealing device for an electric sliding door for automobiles. Background Technology
[0002] The sealing device of an electric sliding door is crucial for ensuring vehicle airtightness and passenger comfort, and is widely used in MPVs, high-end commercial vehicles, and new energy vehicles. Current technology primarily employs a structural design combining EPDM rubber sealing strips with water guide channels, achieving sealing through control of the door frame pre-compression deformation, supplemented by a pressure balance valve to regulate the pressure difference between the inside and outside of the cabin. The current mainstream double-lip sealing structure can achieve an IPX4 waterproof standard and maintain seal integrity under drainage rates ≥1.5L / min. With the development of automotive intelligence, electric sliding door systems are beginning to integrate automatic closing functions, placing higher demands on the dynamic adaptability and precise pressure control of the sealing device.
[0003] However, existing technologies have limitations. Traditional mechanical sealing structures rely on a fixed preload and cannot automatically adjust the clamping amount according to the door's closing state. When the temperature difference exceeds ±30℃, the sealing gap changes by 2-3mm. The air pressure balancing mechanism has a lag in response, and the rebound delay of the sealing strip due to the negative pressure inside the cabin at the moment the door closes reaches 0.8-1.2 seconds. The coordination between the electric actuator and the sealing components is poor, and the sealing block driven by the linear motor has a 5%-8% off-center load rate, resulting in a local contact pressure deviation exceeding 15N / cm. 2 Existing drainage channel designs do not consider dynamic water pressure changes. When the wading depth exceeds 300mm, the siphon effect can cause backflow of up to 200ml / min. These problems seriously affect the waterproof reliability and service life of electric sliding door systems. Therefore, we provide a waterproof sealing device for automotive electric sliding doors. Utility Model Content
[0004] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a waterproof sealing device for electric sliding doors of automobiles.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a waterproof sealing device for an electric sliding door of an automobile, comprising: a support mechanism, the support mechanism including a support frame, a connecting frame provided on one side of the support frame, a fixing pin provided between the connecting frame and the support frame, a lifting main frame provided on the connecting frame, a lifting motor plate provided on one side of the lifting main frame, a pressure motor plate provided on the side of the connecting frame away from the lifting main frame, and a pressure-applying mechanism provided on one side of the lifting motor plate and the pressure motor plate;
[0006] The pressurizing mechanism includes a docking lifter, one end of which is provided with a connecting plate frame, a pressurizer is provided on the connecting plate frame, one end of which is provided with a pressure applicator, and a pressure applicator is provided with a pressure application line.
[0007] In a preferred embodiment, a roller coating mechanism is provided between the two support frames. The roller coating mechanism includes a base plate, a limiting frame is provided on the base plate, a flipping box is provided in the limiting frame, and a flipping motor is provided on one side of the flipping box.
[0008] In a preferred embodiment, the bottom of the limiting frame is mounted on the base plate, the outer surface of the flipping box is nested in the limiting frame, the flipping motor is mounted on the base plate, and one side of the flipping motor is abutted against the flipping box.
[0009] In a preferred embodiment, one side of the connecting frame contacts the support frame, the outer surface of the fixing pin is inserted and nested between the support frame and the connecting frame, and one side of the lifting main frame is welded to one side of the connecting frame.
[0010] In a preferred embodiment, the bottom of the lifting motor plate is welded to the connecting frame, the outer surface of the pressure motor plate is nested in the connecting frame, and the two ends of the docking lift are respectively docked between the lifting motor plate and the connecting plate frame.
[0011] In a preferred embodiment, one side of the pressurizer is welded to one side of the connecting plate frame, one end of the pressurizer is welded to the pressure applicator, and the two ends of the pressure application connection line are respectively connected to the pressure applicator and the pressure motor plate.
[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:
[0013] This invention places the electric sliding door between two support frames. Operators can control the switches of the lifting motor and the pressure motor. The rotation of the lifting motor drives the switch of the connecting lifter, which in turn adjusts the pressure mechanism. The pressure motor then controls the pressure device and the pressure connection line to seal the electric sliding door, thus improving its practicality in actual use. Attached Figure Description
[0014] Figure 1 This is a structural schematic diagram of a waterproof sealing device for an electric sliding door of an automobile, provided by this utility model.
[0015] Figure 2 A schematic diagram of the support mechanism structure of a waterproof sealing device for an electric sliding door of an automobile provided by this utility model.
[0016] Figure 3A schematic diagram of the pressure mechanism structure of a waterproof sealing device for an electric sliding door of an automobile provided by this utility model.
[0017] Figure 4 A schematic diagram of the coating mechanism of a waterproof sealing device for an electric sliding door of an automobile. This utility model provides a structural diagram of the coating mechanism.
[0018] Legend:
[0019] 1. Support mechanism; 11. Support frame; 12. Connecting frame; 13. Fixing pin; 14. Lifting main frame; 15. Lifting motor plate; 16. Pressure motor plate;
[0020] 2. Pressurizing mechanism; 21. Docking lift; 22. Connecting plate frame; 23. Pressurizer; 24. Pressurizing connection line; 25. Pressurizer;
[0021] 3. Roller coating mechanism; 31. Base plate; 32. Limiting frame; 33. Flip box; 34. Flip motor. Detailed Implementation
[0022] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.
[0023] It should be noted that many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.
[0024] Furthermore, it should be understood in the description of this utility model that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral unit; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. However, specifying a direct connection indicates that the two main bodies at the connection point are not connected by an intermediate structure, but are simply connected to form a whole through a connecting structure. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0026] In this utility model, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0027] Example 1
[0028] like Figure 1-3 As shown, this utility model provides a technical solution: a waterproof sealing device for an electric sliding door of an automobile, comprising: a support mechanism 1, the support mechanism 1 including a support frame 11, a connecting frame 12 provided on one side of the support frame 11, a fixing pin 13 provided between the connecting frame 12 and the support frame 11, a lifting main frame 14 provided on the connecting frame 12, a lifting motor plate 15 provided on one side of the lifting main frame 14, a pressure motor plate 16 provided on the side of the connecting frame 12 away from the lifting main frame 14, and a pressure-applying mechanism 2 provided on one side of the lifting motor plate 15 and the pressure motor plate 16;
[0029] The pressurizing mechanism 2 includes a docking lift 21, a connecting plate frame 22 is provided at one end of the docking lift 21, a pressurizer 23 is provided on the connecting plate frame 22, a pressure applicator 25 is provided at one end of the pressurizer 23, and a pressure application connecting line 24 is provided on the pressure applicator 25.
[0030] One side of the connecting frame 12 contacts the support frame 11. The outer surface of the fixing pin 13 is inserted and nested between the support frame 11 and the connecting frame 12. One side of the lifting main frame 14 is welded to one side of the connecting frame 12. The bottom of the lifting motor plate 15 is welded to the connecting frame 12. The outer surface of the pressure motor plate 16 is nested in the connecting frame 12. The two ends of the docking lifting device 21 are respectively docked between the lifting motor plate 15 and the connecting plate frame 22. One side of the pressurizer 23 is welded to one side of the connecting plate frame 22. One end of the pressurizer 23 is welded to the pressure device 25. The two ends of the pressure connecting line 24 are respectively docked to the pressure device 25 and the pressure motor plate 16.
[0031] In this embodiment, when the operator uses this sealing device to seal the electric sliding door, the operator can place the electric sliding door between two support frames 11. Then, the operator can control the switch of the lifting motor plate 15 and the pressure motor plate 16. In this way, the rotation of the lifting motor plate 15 can drive the switch of the docking lifter 21 to adjust the pressure mechanism 2. Then, the pressure motor plate 16 controls the pressure applicator 25 and the pressure connection line 24 to control the electric sliding door to seal.
[0032] Example 2
[0033] like Figure 1-4 As shown, a roller coating mechanism 3 is provided between the two support frames 11. The roller coating mechanism 3 includes a base plate 31, a limit frame 32 is provided on the base plate 31, a flip box 33 is provided in the limit frame 32, and a flip motor 34 is provided on one side of the flip box 33.
[0034] The bottom of the limiting frame 32 is mounted on the base plate 31, the outer surface of the flip box 33 is nested in the limiting frame 32, the flip motor 34 is mounted on the base plate 31, and one side of the flip motor 34 is connected to the flip box 33.
[0035] In this embodiment, to further enhance its practicality in actual use, a corresponding roller coating mechanism 3 is provided on the electric sliding door. The operator can place the electric sliding door on the flip box 33, and then the operator can drive the flip box 33 to work through the flip motor 34, so that it can apply sealing material to the electric sliding door. Afterwards, the pressure mechanism 2 can apply pressure to seal the electric sliding door, thereby further enhancing its practicality in actual use.
[0036] Working principle:
[0037] like Figure 1-4As shown, during the sealing process of the electric sliding door using this sealing device, the operator needs to place the electric sliding door between the two support frames 11. Next, the operator can adjust the operation of the equipment by controlling the switches of the lifting motor plate 15 and the pressure motor plate 16. Specifically, the rotation of the lifting motor plate 15 will drive the switch of the docking lifter 21, thereby realizing the lifting and lowering adjustment of the pressure mechanism 2. Simultaneously, the pressure motor plate 16 is responsible for controlling the operation of the pressure applicator 25 and the pressure connection line 24, thereby performing a precise sealing operation on the electric sliding door.
[0038] To further enhance the practicality of the sealing device in real-world applications, a roller coating mechanism 3 is specially designed. Operators can place the electric sliding door on the tilting box 33, and the tilting motor 34 activates the tilting box 33 to rotate, thereby uniformly coating the surface of the electric sliding door with sealing material. During this process, the applied sealing material effectively covers the surface of the electric sliding door, improving its sealing effect. Finally, with the assistance of the pressurizing mechanism 2, appropriate pressure is applied to the electric sliding door to further seal it, ensuring that the door's sealing performance reaches the ideal effect.
[0039] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.
[0040] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A waterproof sealing device for an electric sliding door of an automobile, characterized in that, include: A support mechanism (1) is provided, the support mechanism (1) includes a support frame (11), a connecting frame (12) is provided on one side of the support frame (11), a fixing pin (13) is provided between the connecting frame (12) and the support frame (11), a lifting main frame (14) is provided on the connecting frame (12), a lifting motor plate (15) is provided on one side of the lifting main frame (14), a pressure motor plate (16) is provided on the side of the connecting frame (12) away from the lifting main frame (14), and a pressurizing mechanism (2) is provided on one side of the lifting motor plate (15) and the pressure motor plate (16); The pressurizing mechanism (2) includes a docking lift (21), one end of which is provided with a connecting plate frame (22), a pressurizer (23) is provided on the connecting plate frame (22), a pressure applicator (25) is provided on one end of the pressurizer (23), and a pressure applicator connecting line (24) is provided on the pressure applicator (25).
2. The waterproof sealing device for an electric sliding door of an automobile according to claim 1, characterized in that: A roller coating mechanism (3) is provided between the two support frames (11). The roller coating mechanism (3) includes a base plate (31). A limit frame (32) is provided on the base plate (31). A flip box (33) is provided in the limit frame (32). A flip motor (34) is provided on one side of the flip box (33).
3. The waterproof sealing device for an electric sliding door of an automobile according to claim 2, characterized in that: The bottom of the limiting frame (32) is mounted on the base plate (31), the outer surface of the flip box (33) is nested in the limiting frame (32), the flip motor (34) is mounted on the base plate (31), and one side of the flip motor (34) is connected to the flip box (33).
4. The waterproof sealing device for an electric sliding door of an automobile according to claim 1, characterized in that: One side of the connecting frame (12) is in contact with the support frame (11), the outer surface of the fixing pin (13) is inserted and nested between the support frame (11) and the connecting frame (12), and one side of the lifting main frame (14) is welded to one side of the connecting frame (12).
5. A waterproof sealing device for an electric sliding door of an automobile according to claim 1, characterized in that: The bottom of the lifting motor plate (15) is welded to the connecting frame (12), the outer surface of the pressure motor plate (16) is nested in the connecting frame (12), and the two ends of the docking lifter (21) are respectively docked between the lifting motor plate (15) and the connecting plate frame (22).
6. The waterproof sealing device for an electric sliding door of an automobile according to claim 1, characterized in that: One side of the pressurizer (23) is welded to one side of the connecting plate frame (22), one end of the pressurizer (23) is welded to the pressure applicator (25), and the two ends of the pressure application connecting line (24) are respectively connected to the pressure applicator (25) and the pressure application motor plate (16).