Compartment airtight sealing door plate and door frame matching structure

Abstract

The utility model discloses a compartment airtight sealing door plate and door frame matching structure, which relates to the technical field of automobile parts and comprises a door frame and a door plate arranged in the door frame, a gap is reserved between the periphery of the door frame and the door plate, and a first groove is arranged on the inner side of the periphery of the door frame. Second grooves corresponding to the first grooves are formed in the outer side of the periphery of the door plate. A rubber sealing strip is arranged in the second groove, and the rubber sealing strip is of an annular closed hollow structure; a plurality of elastic bands are arranged in a cavity of the rubber sealing strip, and at least one inflating hose communicated with the cavity is arranged on the outer side of the rubber sealing strip; in a natural state, the rubber sealing strip is flat under the action of the elastic band; in the working state, the cavity of the rubber sealing strip is inflated through the inflation hose, the rubber sealing strip deforms after being expanded, and an extrusion sealing structure is formed by the rubber sealing strip, the first groove and the second groove.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, specifically a door panel and door frame mating structure for airtight sealing of a vehicle compartment. Background Technology

[0002] The cargo compartment is the main functional part of a commercial vehicle for carrying goods. For scenarios such as cold chain transportation and grain transportation, the airtightness of the cargo compartment is a core functional requirement. To facilitate the entry and exit of goods, the cargo compartment must be equipped with door openings, and these openings should be as large as possible. Generally, the cargo compartment has at least one rear door, and some also have side doors.

[0003] The cargo compartment can be viewed as a six-sided box. Excluding the rear door frame and rear door assembly, the remaining five panels can be sealed using methods such as full welding or sealant application. The rear door frame and rear door assembly are generally connected to the cargo compartment using hinges. Typical cargo compartment rear doors are relatively large, with the rear door frame measuring 2.5m x 2.6m and individual door panels measuring approximately 1.25m x 2.6m, resulting in significant weight. For cargo compartments requiring airtightness, the gap between the door panel and the door frame is sealed using multi-layer extruded sealing strips. These rubber sealing strips are typically installed on the door panel and connected via riveting or self-tapping screws. At the factory, the gap between the door panel and the door frame is basically fixed, and the rubber sealing strips are manufactured to the ideal gap. However, with increased use, the rubber sealing strips will wear down. Due to door frame deformation or door panel sagging, the gap between the door panel and the door frame will shift, ultimately resulting in a poor seal in the cargo compartment and causing cargo transportation losses. Repairing this type of multi-layer extruded sealing strip after a sealing problem occurs is difficult, and replacing the sealing strips is cumbersome.

[0004] Chinese patent "A Waterproof Rear Door Sealing Structure for Automobile Cabin" (patent application number: 202222035673.3) discloses an innovative solution. This solution utilizes two annular airbags that, after inflation, completely seal against each other, dynamically eliminating the gap between the rear door and the door frame, thereby significantly improving the waterproof sealing effect. When the door is closed, the airbags are deflated, preventing damage from compression and making closing the door easier.

[0005] However, this scheme has the following main drawbacks:

[0006] Limited applicability: This design is only suitable for door frames and panels with specific structures, making it difficult to adapt to common car models on the market. Furthermore, the applicable door opening size is typically small, further limiting its application range.

[0007] Insufficient reliability of return to position: After deflation, the airbag relies solely on its own elastic recoil to return to its original position. After long-term use, the airbag material may age or deform, making it difficult to guarantee that it can always return to its original position smoothly and completely, which may affect the normal opening and closing of the car door.

[0008] Low operational efficiency: This solution requires inflating and deflating two airbags, which increases the complexity and time cost of the door opening and closing process, and reduces work efficiency. Summary of the Invention

[0009] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a vehicle compartment airtight sealing door panel and door frame mating structure. It adopts an active inflation airbag structure for sealing, structurally solving the sealing problem of the mating between the vehicle compartment door panel and door frame, basically eliminating the wear of the sealing strip, and the large deformation of the airbag can offset the sealing problem after the gap between the door panel and door frame shifts.

[0010] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a door panel and door frame mating structure for airtight sealing of a vehicle compartment, including a door frame and a door panel disposed within the door frame, with a gap between the door frame and the door panel around its perimeter. A first groove is provided on the inner side of the perimeter of the door frame, and a second groove corresponding to the first groove is provided on the outer side of the perimeter of the door panel. A rubber sealing strip is disposed in the second groove, and the rubber sealing strip has an annular closed hollow structure. Several elastic bands are disposed in the cavity of the rubber sealing strip, and at least one air-filled hose communicating with the cavity is disposed on the outer side of the rubber sealing strip. In its natural state, the rubber sealing strip is flattened under the action of the elastic bands. In its working state, air is injected into the cavity of the rubber sealing strip through the air-filled hose, and the rubber sealing strip expands and deforms to form a compression sealing structure with the first groove and the second groove.

[0011] A further improvement is that a rubber airbag adapted to the rubber sealing strip is provided in the first groove.

[0012] A further improvement is that the back of the rubber sealing strip is bonded to the second groove with adhesive.

[0013] A further improvement is that the two ends of the elastic band are connected to the front and back of the rubber sealing strip, respectively.

[0014] A further improvement is that a guide bevel is provided at the opening of the first groove, and a guide surface adapted to the guide bevel is provided on the front side of the rubber sealing strip.

[0015] A further improvement is that the inflatable hose is provided in two parts, which are respectively arranged at the two top corners of the door panel.

[0016] A further improvement is that the door frame includes an upper frame, a lower frame, and two uprights.

[0017] A further improvement is that the door panel is connected to the column via a hinge.

[0018] A further improvement is that the inflation hose extends from the second groove and connects to an external inflation device.

[0019] A further improvement is that the inflation device is an air pump or a gas cylinder.

[0020] The beneficial effects of this utility model are as follows:

[0021] 1. In this utility model, the rubber sealing strip is a ring-shaped closed hollow structure with an elastic band inside. In its natural state, the rubber strip can be controlled to be flat to avoid interference when the door panel is opened and closed. In the working state, air is injected into the rubber sealing strip. After the rubber strip expands, it deforms and forms a seal with the rubber air bladder inside the groove of the door frame.

[0022] 2. In this utility model, the gap between the door panel and the door frame is smaller, and the rubber strip has a greater deformation capacity, which can cope with the deformation generated during the use of the carriage and has better durability.

[0023] 3. In this utility model, the rubber sealing strip is a ring-shaped closed hollow structure, which can be checked by inflation, making it easy to check the sealing performance.

[0024] 4. In this utility model, the rubber sealing strip is assembled with the door panel by utilizing the elasticity of rubber and a small amount of self-adhesive. Compared with conventional multi-layer extrusion sealing strips, which require drilling and riveting or self-tapping screws, replacing the rubber sealing strip is very easy and does not produce additional holes, thus better ensuring the airtightness of the vehicle compartment. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the airtight sealing door panel and door frame of the carriage in an embodiment of this utility model;

[0026] Figure 2 for Figure 1 Sectional view along the AA direction.

[0027] Figure label:

[0028] 1-Door frame; 11-First groove; 12-Rubber airbag; 13-Guide bevel; 14-Upper frame; 15-Lower frame; 16-Post;

[0029] 2-Door panel; 21-Second groove; 22-Hinge;

[0030] 3-Gap;

[0031] 4-Rubber sealing strip; 41-Cavity; 42-Elastic band; 43-Inflatable hose; 44-Guide surface; 45-Adhesive. Detailed Implementation

[0032] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.

[0033] In the description of this utility model, it should be noted that the directional terms such as "center", "horizontal (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and 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. They should not be construed as limiting the specific protection scope of this utility model.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Thus, the use of "first" and "second" to define a feature may explicitly or implicitly include one or more of that feature. In the description of this utility model, "several" or "a number" means two or more, unless otherwise explicitly specified.

[0035] The following description, in conjunction with the accompanying drawings, further illustrates specific embodiments of the present invention, making the technical solution and beneficial effects of the present invention clearer and more explicit. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0036] See Figure 1 and Figure 2 As shown, this utility model embodiment provides a door panel and door frame mating structure for an airtight sealing door panel of a vehicle compartment, including a door frame 1 and a door panel 2 disposed within the door frame 1, with a gap 3 between the door frame 1 and the door panel 2 around its perimeter. Specifically, the door frame 1 includes an upper frame 14, a lower frame 15, and two uprights 16. The door panel 2 is connected to the uprights 16 via hinges 22.

[0037] A first groove 11 is provided on the inner side of the door frame 1, and a second groove 21 corresponding to the first groove 11 is provided on the outer side of the door panel 2. Specifically, a rubber airbag 12 adapted to the rubber sealing strip 4 is provided in the first groove 11. The back of the rubber sealing strip 4 is bonded to the second groove 21 with adhesive 45. A guide bevel 13 is provided at the opening of the first groove 11, and a guide surface 44 adapted to the guide bevel 13 is provided on the front of the rubber sealing strip 4.

[0038] A rubber sealing strip 4 is provided within the second groove 21, and the rubber sealing strip 4 has a closed, annular hollow structure. Several elastic bands 42 are provided within the cavity 41 of the rubber sealing strip 4; specifically, the two ends of the elastic bands 42 are connected to the front and back of the rubber sealing strip 4, respectively. At least one inflatable hose 43 communicating with the cavity 41 is provided on the outside of the rubber sealing strip 4; in this embodiment, two inflatable hoses 43 are provided, respectively located at the two upper corners of the door panel 2. Specifically, the inflatable hoses 43 extend from the second groove 21 and connect to an external inflation device. This does not affect the opening and closing of the door panel. The inflation device is an air pump or a gas cylinder.

[0039] In its natural state, the rubber sealing strip 4 is flattened under the action of the elastic band 42; in its working state, air is injected into the cavity 41 of the rubber sealing strip 4 through the air hose 43, and the rubber sealing strip 4 expands and deforms to form a compression sealing structure with the first groove 11 and the second groove 21.

[0040] In the description of this specification, references to terms such as "an embodiment," "preferred," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. Illustrative expressions of the above terms in this specification 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.

[0041] Based on the above description of the structure and principle, those skilled in the art should understand that this utility model is not limited to the specific embodiments described above. Improvements and substitutions made using techniques known in the art based on this utility model all fall within the protection scope of this utility model and should be defined by the claims.

Claims

1. A door panel and door frame mating structure for airtight sealing of a vehicle body, comprising a door frame (1) and a door panel (2) disposed within the door frame (1), wherein there is a gap (3) between the door frame (1) and the door panel (2) around its perimeter, characterized in that: The door frame (1) has a first groove (11) on its inner perimeter, and the door panel (2) has a second groove (21) on its outer perimeter corresponding to the first groove (11). A rubber sealing strip (4) is provided in the second groove (21), and the rubber sealing strip (4) is a closed hollow structure in the ring shape; a number of elastic bands (42) are provided in the cavity (41) of the rubber sealing strip (4), and at least one air hose (43) communicating with the cavity (41) is provided on the outside of the rubber sealing strip (4). In its natural state, the rubber sealing strip (4) is flat under the action of the elastic band (42); in its working state, air is injected into the cavity (41) of the rubber sealing strip (4) through the air inflating hose (43), and the rubber sealing strip (4) expands and deforms to form a compression sealing structure with the first groove (11) and the second groove (21).

2. The airtight sealing door panel and door frame mating structure of the carriage according to claim 1, characterized in that: A rubber airbag (12) adapted to the rubber sealing strip (4) is provided in the first groove (11).

3. The airtight sealing door panel and door frame mating structure of the carriage according to claim 1, characterized in that: The back of the rubber sealing strip (4) is bonded to the second groove (21) by adhesive tape (45).

4. The airtight sealing door panel and door frame mating structure of the carriage according to claim 1, characterized in that: The two ends of the elastic band (42) are connected to the front and back of the rubber sealing strip (4), respectively.

5. The airtight sealing door panel and door frame mating structure of the carriage according to claim 1, characterized in that: The opening of the first groove (11) is provided with a guide bevel (13), and the front of the rubber sealing strip (4) is provided with a guide surface (44) that matches the guide bevel (13).

6. The airtight sealing door panel and door frame mating structure of the carriage according to claim 1, characterized in that: Two inflatable hoses (43) are provided, which are respectively arranged at the two top corners of the door panel (2).

7. The airtight sealing door panel and door frame mating structure of the carriage according to claim 1, characterized in that: The door frame (1) includes an upper frame (14), a lower frame (15), and two posts (16).

8. The airtight sealing door panel and door frame mating structure of the carriage according to claim 7, characterized in that: The door panel (2) is connected to the column (16) via a hinge (22).

9. The airtight sealing door panel and door frame mating structure of the carriage according to claim 1, characterized in that: The inflation hose (43) is led out from the second groove (21) and connected to an external inflation device.

10. The airtight sealing door panel and door frame mating structure of the carriage according to claim 9, characterized in that: The inflation device is an air pump or a gas cylinder.

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