Sealing structure, cabin door and manufacturing method

Abstract

The invention discloses a sealing structure, a cabin door and a manufacturing method, and belongs to the technical field of cabin door sealing. A first sealing rubber strip is arranged on the outer door frame, and a first mechanical pressing point is arranged on the outer door frame. A second sealing rubber strip is arranged on the door leaf frame, and a second mechanical pressing point is arranged on the door leaf frame. A first sealing rubber strip and a corresponding first mechanical pressing point are arranged on the outer door frame, and a second sealing rubber strip and a corresponding second mechanical pressing point are arranged on the door leaf frame. And the first mechanical pressing point presses the second sealing rubber strip, and the second mechanical pressing point presses the first sealing rubber strip, so that crossed pressing is formed. The crossed arrangement enables the two rubber strips to have overlapped sealing parts, and the two rubber strips can bear directional compression from opposite side structures instead of depending on a single-side frame body only. Multiple sealing paths are formed, the medium permeation path is remarkably prolonged, the sealing effect is close to a labyrinth type sealing effect, and the waterproof performance, the airtight performance, the dustproof performance, the electromagnetic resistance, the radiation leakage resistance and the like are improved.

Description

Technical Field

[0001] This invention belongs to the field of hatch sealing technology, specifically a sealing structure, a hatch, and a manufacturing method. Background Technology

[0002] As a key module in special vehicles, field hospitals, radar and communication equipment, and emergency rescue systems, modular shelters typically employ aluminum alloy or steel frame structures to achieve rapid deployment, environmental isolation, and multifunctional integration. As the main opening component of the modular shelter structure, the sealing performance of the doors directly affects its waterproofing, dustproofing, heat insulation, airtightness, and radiation leakage prevention, thus impacting the reliability of internal equipment and the safety of personnel.

[0003] Existing modular shelter doors generally employ a structure with a single sealing strip arranged circumferentially on the outer frame or door leaf frame. When the door is closed, the sealing strip forms linear contact with the corresponding frame, achieving basic waterproof, dustproof, and airtight performance. To ensure a tight seal between the sealing strip and the frame surface, mechanical pressure points are usually installed on the outer frame or door leaf frame. This applies pressure to the sealing strip when the door is locked, ensuring the proper functioning of the sealing structure.

[0004] Single-strip sealing strips typically have limited width, and mechanical locking points can only be placed at a single location covered by the strip, resulting in each sealing structure forming only one effective clamping point. Single-strip structures are usually planar or simple lip-type contacts, with a single sealing path, making it impossible to form multi-stage or labyrinthine barrier structures. When the hatch is in an environment with high wind pressure, low pressure differential, or exposed to rainwater or dust, the medium can enter the cabin along a shorter interface path, thus limiting the overall sealing performance. Summary of the Invention

[0005] The purpose of this invention is to provide a sealing structure, a hatch, and a manufacturing method to solve the problems mentioned in the prior art.

[0006] A sealing structure, a hatch, and a manufacturing method are provided, including:

[0007] The door frame is provided with a first sealing strip, and a first mechanical pressure point is provided at the position where the door frame and the first sealing strip meet. The door frame is provided with a second sealing strip, and a second mechanical pressure point is provided at the junction of the door frame and the second sealing strip. The first mechanical pressure point can contact the second sealing strip, and the second mechanical pressure point can contact the first sealing strip.

[0008] As a further embodiment of the present invention, it also includes a type B adhesive strip, which is disposed on one of the outer frame of the door and the door leaf frame. A third mechanical pressure point is provided on the outer frame of the door or the door leaf frame, which can contact the type B adhesive strip when the door hinge is installed.

[0009] Based on the existing double-strip structure formed by the first and second sealing strips, a third type B sealing strip is added to create a third sealing line, which, in conjunction with the third mechanical pressure point, forms an independent clamping pair. The first and second sealing strips provide the primary seal, but when slight deformation occurs in the first sealing area, the type B sealing strip provides a secondary compensating seal, dispersing the pressure rather than concentrating it on a single sealing strip.

[0010] In the initial stage of hatch closure, the Type B sealing strip, due to its large cross-section and extended reach, will be the first to contact the third mechanical pressure point. This contact generates a directional primary compressive force, which guides the hatch in a unified and controllable closing direction, providing a stop point guide for the hatch. This means the hatch no longer relies on hard-on-hard metal positioning, but is guided to the correct position by the flexible sealing strip. When the first and second mechanical pressure points press their respective sealing strips together, the positioning is more precise and the pressure is more controllable.

[0011] As a further embodiment of the present invention: a first assembly groove for accommodating the B-type adhesive strip is formed on the outer frame of the door, and a plurality of first ribs are provided in the first assembly groove along the length direction, and a first recessed groove that fits with the first ribs is formed on the B-type adhesive strip.

[0012] The first assembly groove serves as a limiting cavity for the type B adhesive strip, restricting its lateral and axial position to prevent slippage, flipping, or detachment during compression. Several first stiffening plates are installed as rigid positioning ribs, arranged along the length of the groove to ensure the geometric stability of the groove area of ​​the door frame, unaffected by frame compression, temperature changes, or external impacts. The first recessed groove fits snugly against the stiffening plates, forming a snap-fit ​​constraint. This not only prevents the adhesive strip from falling off but also ensures correct assembly orientation, eliminating errors from manual assembly.

[0013] As a further embodiment of the present invention: when the first mechanical pressure point presses the second sealing strip, the portion of the second sealing strip relative to the first sealing strip extends toward the direction of the first sealing strip; and / or When the second mechanical pressure point presses on the first sealing strip, the portion of the first sealing strip relative to the second sealing strip extends toward the direction of the second sealing strip.

[0014] The two rubber strips extend towards each other to form an overlapping area, which compensates for the depression in the area around the sealing strip caused by mechanical pressure. In addition to the sealing surface formed by the mechanical pressure point and the sealing strip, the two sealing strips form an additional sealing contact surface through opposing pressure, thereby forming a labyrinth sealing path and improving sealing performance.

[0015] As a further embodiment of the present invention: an air cavity is formed in the first sealing strip and / or the second sealing strip, and the first mechanical pressure point and / or the second mechanical pressure point eccentrically compresses the air cavity.

[0016] The eccentric compression method triggers uneven pressure in the air chamber. The air pressure causes the rubber strip to shift and deform, that is, the compression area of ​​the sealing rubber strip is rolled into the free deformation area, forcing the free area to extend outward, so that the two sealing rubber strips can make close contact.

[0017] As a further embodiment of the present invention: a second assembly groove is formed on the outer frame of the door for receiving the first sealing strip, and a plurality of second ribs are provided in the second assembly groove along the length direction, and a second recessed groove is formed on the first sealing strip to fit the second ribs.

[0018] The second assembly groove serves as a limiting cavity for the first sealing strip, restricting its lateral and axial position to prevent slippage, flipping, or detachment during compression. Several second ribs are provided as rigid positioning ribs, arranged along the length of the groove to ensure the geometric stability of the groove area of ​​the door frame, unaffected by frame compression, temperature changes, or external impacts. The second recessed groove fits snugly against the ribs, forming a snap-fit ​​constraint. This not only prevents the sealing strip from falling off but also ensures correct assembly orientation, eliminating errors from manual assembly.

[0019] In another aspect, the present invention provides a hatch, including the sealing structure described above, and further including: a cabin wall panel and a door leaf, wherein the outer frame of the door is disposed on the end wall of the cabin wall panel and a sealant is applied between the mating surface of the door and the cabin wall panel, and the door leaf frame is disposed on the end wall of the door leaf.

[0020] By separating the hull panels and door frames into independent components, and further separating the door panels and door frame into independent components, the hatch system achieves a modular, relatively adjustable structural arrangement. Specifically, the modular structure allows for independent adjustment of the door frame when installed onto the hull panels, and of the door frame when installed onto the door panels. This provides freedom in terms of minor movement, micro-angle adjustment, and surface correction. Locally damaged components can be replaced independently, and more flexible mounting bases are provided for functional fillers, reinforcements, and decorative elements.

[0021] As a further embodiment of the present invention: an installation part extending along the side wall of the cabin wall is formed on the outer frame of the door, and a rotating body extending toward the cabin wall is formed at the end of the outer frame of the door away from the cabin wall. A filler is provided between the outer frame of the door and the cabin wall, and the filler extends to the rotating body.

[0022] The mounting section allows the door outer frame to be assembled from the side wall of the hull panel, providing clearance for functional fillers located between the door outer frame and the end wall of the hull panel. The rotating body, acting as a rotating barrier structure, improves the assembly stability of the fillers. The fillers, as functional materials, fill gaps according to actual needs, giving the hatch additional performance characteristics.

[0023] In another aspect, the present invention provides a manufacturing method for manufacturing the above-mentioned sealing structure, comprising the following steps: S1.1 Door frame profiles obtained through extrusion process; S1.2. Locate and drill continuous anchor bolt holes on the outer frame of the door and the first stiffening plate; S1.3 Connect the outer frame of the door to the first stiffening plate with anchor bolts through the anchor bolt holes.

[0024] In another aspect, the present invention provides a manufacturing method for manufacturing the above-mentioned sealing structure, comprising the following steps: S2.1 Door frame profiles obtained through extrusion process; S2.2. Locate and drill continuous anchor bolt holes on the outer frame of the door and the second stiffening plate; S2.3 Connect the outer frame of the door to the first stiffening plate with anchor bolts through the anchor bolt holes.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows: A first sealing strip and its corresponding first mechanical pressure point are installed on the outer frame of the door, while a second sealing strip and its corresponding second mechanical pressure point are installed on the door leaf frame. The first mechanical pressure point presses against the second sealing strip, and the second mechanical pressure point presses against the first sealing strip, forming a cross-type compression. This cross arrangement allows the two strips to have overlapping sealing portions and both to be subjected to directional pressure from the opposite side structure, rather than relying solely on a single side of the frame. This creates multiple sealing paths, significantly extending the medium penetration path and achieving a near-labyrinth seal effect, thus improving waterproof, airtight, dustproof, electromagnetic, and radiation leakage prevention performance. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this drawing or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this drawing. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the overall structure of a hatch; Figure 2 This is a partial structural diagram of the second assembly slot provided in an embodiment of the present invention; Figure 3 This is a partial structural diagram of the first assembly slot provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the first sealing strip provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of the second sealing strip provided in an embodiment of the present invention.

[0028] In the diagram: 1. Door outer frame; 11. First mechanical pressure point; 12. Second assembly groove; 13. Second stiffening plate; 14. Mounting part; 15. Rotating body; 2. Door leaf frame; 21. Second mechanical pressure point; 22. First assembly groove; 23. First stiffening plate; 3. First sealing strip; 31. Second recessed groove; 4. Second sealing strip; 5. Type B sealing strip; 51. First recessed groove; 6. Third mechanical pressure point; 7. Air cavity; 8. Cabin wall panel; 9. Door leaf; 10. Filler. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this application clearer, the application is described and illustrated below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application. All other embodiments obtained by those skilled in the art based on the embodiments provided in this application without inventive effort are within the scope of protection of this application.

[0030] Obviously, the accompanying drawings described below are merely some examples or embodiments of this application. Those skilled in the art can apply this application to other similar scenarios based on these drawings without any inventive effort. Furthermore, it is understood that although the efforts made in this development process may be complex and lengthy, for those skilled in the art related to the content disclosed in this application, any changes to design, manufacturing, or production based on the technical content disclosed in this application are merely conventional technical means and should not be construed as insufficient disclosure of the content of this application.

[0031] However, there may be instances where unnecessary detailed descriptions are omitted. For example, detailed descriptions of well-known matters or repetitive descriptions of essentially the same structures may be omitted. This is to avoid unnecessarily lengthy descriptions and to facilitate understanding by those skilled in the art. Furthermore, the accompanying drawings and the following description are provided to enable those skilled in the art to fully understand this application and are not intended to limit the subject matter of the claims.

[0032] Please see Figure 1 As shown, the sealing structure, hatch, and manufacturing method in this embodiment of the invention include a door outer frame 1 and a door leaf frame 2. A first sealing strip 3 is provided on the door outer frame 1, and a first mechanical pressure point 11 is provided at the position where the door outer frame 1 and the first sealing strip 3 meet. A second sealing strip 4 is provided on the door leaf frame 2, and a second mechanical pressure point 21 is provided at the position where the door leaf frame 2 and the second sealing strip 4 meet. The first mechanical pressure point 11 can contact the second sealing strip 4, and the second mechanical pressure point 21 can contact the first sealing strip 3.

[0033] As the hatch begins to move from the open position towards the closed position, the relative positions of the outer frame 1 and the door leaf frame 2 gradually approach each other, but at this time the sealing strips on both sides are not yet under force. The hatch's guidance mainly relies on the geometric trajectory of the hatch hinges themselves, while the sealing structure has not yet entered operation.

[0034] As the hatch closes further, the first mechanical pressure point 11 presses against the second sealing strip 4, and the second mechanical pressure point 21 presses against the first sealing strip 3, forming a first and a second pressing pair on both sides respectively. A curved feature with localized deformation is formed between the mechanical pressure points and the sealing strips, while the first sealing strip 3 and the second sealing strip 4 contact each other to form a linear feature. Specifically, because the free ends of the two sealing strips roll into each other, a second flexible sealing interface formed by the contact of the strips is created outside the mechanical pressing pair, resulting in a labyrinthine path of multi-segment barriers and multi-cavity reversals in the sealing structure.

[0035] The sealing structure also includes a type B rubber strip 5, which is installed on one of the outer frame 1 and the door leaf frame 2. The outer frame 1 or the door leaf frame 2 is provided with a third mechanical pressure point 6 that can contact the type B rubber strip 5 when the hatch hinge is installed.

[0036] In one specific embodiment, the hinge mating surface of the door outer frame 1 has an independent assembly groove along the circumference. The assembly groove is in the form of a closed ring or a three-sided border. The type B adhesive strip 5 is embedded in the assembly groove to prevent lateral movement, flipping, or dislodging. At the same time, a third mechanical pressing point 6 is provided on the door frame 2, which can form a multi-point extension structure. The third mechanical pressing point 6 contacts the type B adhesive strip 5 when the door is hinged.

[0037] In one specific embodiment, the hinge mating surface of the door frame 2 has an independent assembly groove along the circumference. The assembly groove is in the form of a closed ring or a three-sided border. The type B adhesive strip 5 is embedded in the assembly groove to prevent lateral movement, flipping, or dislodging. At the same time, a third mechanical pressing point 6 is provided on the outer door frame 1, which can form a multi-point extension structure. The third mechanical pressing point 6 contacts the type B adhesive strip 5 when the door is hinged.

[0038] In the initial stage of hatch closure, the Type B rubber strip 5, located on the outer frame 1 or door leaf frame 2, has a larger cross-sectional size and a more prominent outward extension, enabling it to make contact with the corresponding third mechanical pressure point 6 first. Simultaneously with initial elastic compression, the Type B rubber strip 5 applies a stable and predictable reaction force to the hatch. Through this compressive force, the hatch is flexibly guided to a uniform closing path during the closing process, thus forming a flexible stopping point.

[0039] Compared to the traditional method of direct metal-part positioning, the flexible guidance provided by the Type B sealing strip 5 avoids hard interference with the hatch, improves the smoothness of the closing action, and reduces structural wear. With the help of this flexible guidance, when the first mechanical pressure point 11 and the second mechanical pressure point 21 finally reach their stopping positions, the pressing depth with the corresponding first sealing strip 3 and second sealing strip 4 is more precise, and the pressing force is more reasonable and controllable. This avoids damage to the sealing strips due to excessive compression or insufficient sealing effect due to insufficient pressure.

[0040] When the first mechanical pressure point 11 presses against the second sealing strip 3, or the second mechanical pressure point 21 presses against the first sealing strip 4, portions of the two sealing strips extend in opposite directions, forming overlapping areas. This overlapping area not only effectively compensates for the local indentation of the sealing strips caused by the mechanical pressure points, but also makes full use of the flexible free area of ​​the strips, making the pressure distribution more uniform and preventing local leakage or permanent deformation of a single strip due to excessive local stress.

[0041] More specifically, through the overlapping area formed by the two sealing strips extending in opposite directions, an additional flexible sealing surface is created on top of the linear sealing surface formed by the original mechanical pressure points, thus forming a multi-stage sealing pair. This multi-stage sealing pair forms a labyrinthine sealing path, forcing media (such as air, water, or dust) to pass through multiple reversal paths before entering the chamber, significantly increasing leakage resistance. Simultaneously, due to the full utilization of the free area of ​​the sealing strips by the overlapping area, when the hatch undergoes minor deformation under high pressure differentials, vibration, or scouring environments, the overlapping area can adaptively compensate, ensuring a tight seal and reducing the risk of leakage caused by localized indentation or displacement.

[0042] In one embodiment, the mechanical pressure point is a boss structure, with a size smaller than the width of the rubber strip, ensuring localized compression without complete flattening. The pressure point forms an eccentric contact with the flexible lip of the rubber strip, triggering the extension area to roll in and overlap. At the initial stage of closure, the two rubber strips are compressed by their respective opposite pressure points, causing the free area of ​​the rubber strip to extend to the opposite side, forming an overlapping region. The length of the overlapping region is continuous along the circumference of the rubber strip, creating a labyrinthine zigzag path. This extension is achieved through the properties of the rubber strip itself; the rubber strip is made of a material with high elasticity, which facilitates the extrapolation deformation of the free area through asymmetrical compression.

[0043] In one embodiment, the mechanical pressure point is a boss structure, and the size of the pressure point is smaller than the width of the sealing strip. An elastic tab is provided inside the sealing strip. When the mechanical pressure point presses eccentrically on the sealing strip, the elastic tab is subjected to an eccentric load, causing the free end of the elastic tab to lift up, thereby causing the free area of ​​the sealing strip to extend outward.

[0044] In one embodiment, see Figure 1 , Figure 4and Figure 5 As shown, an air cavity 7 is formed within the sealing strip, and a mechanical pressure point eccentrically compresses the air cavity 7. When the mechanical pressure point presses on the eccentric side of the air cavity 7, that side experiences rapid local collapse due to its thin wall. The air inside the air cavity 7 is compressed and flows to the opposite side, forming an internal pressure gradient. The pressurized free sidewall undergoes an outward bulging deformation, protruding towards the other side of the sealing strip. Ultimately, overlapping areas are formed, converging towards each other. The internal air pressure difference actively propels the free area outward, and the outward deformation is stable and repeatable.

[0045] Please see Figure 1 and Figure 3 As shown, a first mounting groove 22 is formed on the door frame 2 to accommodate the type B adhesive strip 5. Several first stiffening plates 23 are arranged along the length of the first mounting groove 22. A first recessed groove 51 is formed on the type B adhesive strip 5 to fit against the first stiffening plates 23. The first mounting groove 22 serves as a limiting cavity for the type B adhesive strip 5, and its main function is to provide a precisely defined installation space for the adhesive strip, thereby restricting its lateral position and axial movement.

[0046] The first assembly groove 22 is located in the cantilever section of the door frame 2. Because this section loses the continuity of the main structure of the profile and has a relatively thin wall thickness, it is prone to local bending and torsion under stress. The first stiffening plate 23 is set inside the groove as a rigid positioning rib. The first stiffening plate 23 extends along the width direction of the first assembly groove 22 and plays a role in rigidity enhancement.

[0047] Specifically, since the first assembly groove 22 is a locally weakened structure, and the first stiffening plate 23 has reinforcing ribs implanted inside the weakened area, the bending and torsional stiffness of the groove cross-section is greatly improved. As a local stiffening rib, the first stiffening plate 23 effectively reduces the side wall deformation when the cantilever section is under pressure, so that the groove does not warp like a beam due to the clamping load when the hatch is closed, ensuring the stability of the groove geometry and fundamentally avoiding delamination, overturning or displacement of the rubber strip during the compression process.

[0048] It should be noted that the first recessed groove 51 on the type B rubber strip 5 does not completely cut off the type B rubber strip 5, but is only to accommodate the first reinforcing plate 23 to be recessed inward to a certain depth, and does not affect the overall sealing performance of the type B rubber strip 5.

[0049] Furthermore, extruded profiles cannot be extruded in one go to form a structure that extends laterally, has large differences in length and width in some areas, or abrupt changes in direction. Therefore, if the profile structure is relied upon entirely, the assembly groove can only maintain a simple thickness and cannot naturally produce local protrusions, recesses, or high-rigidity ribs.

[0050] In one specific embodiment, after the extruded profile is formed, the first assembly groove 22 and the corresponding first stiffener 23 structure are formed by cutting and grinding processes. However, due to the large length of the profile, the need to equip it with a corresponding positioning mechanism, and the difficulty for the cutting tool to find the entry angle due to interference from other structures of the profile, the forming cost of this process is high and the process is relatively complicated.

[0051] Therefore, the present invention provides a manufacturing method for manufacturing a first assembly groove 22 and a first stiffening plate 23, comprising the following steps: Step 1: Door frame profile 1 obtained through extrusion process.

[0052] Step 2: Locate and drill continuous anchor bolt holes on the outer frame 1 and the first stiffening plate 23; Step 3: Connect the outer frame 1 and the first stiffening plate 23 with anchor bolts through the anchor bolt holes.

[0053] The split stiffening plates, produced through post-processing, can possess arbitrary thickness, localized reinforcement zones, and stepped structures. They can be tightly fitted to the first assembly groove 22, providing a precisely matched reinforcing surface. High-rigidity geometric features impossible to achieve with profile extrusion can be realized. The split first stiffening plate 23 overcomes the inherent structural limitations of the extrusion process, enabling the groove to acquire a reinforcing structure that would otherwise be unattainable. The pre-tightening force generated after the anchor bolts are tightened ensures that the first stiffening plate 23 is tightly fitted to the wall surface of the door frame 2, creating a continuous load-bearing structure.

[0054] In an additional embodiment, welding is used to fix the first stiffener 23 to the first mounting groove 22. However, during welding, the lightweight door frame 2 is prone to local warping, which will affect the geometric accuracy of the first mounting groove 22 and may damage the surface coating of the profile, leading to corrosion risks.

[0055] In one specific embodiment, the anchor bolt is an expansion anchor bolt or a chemical anchor bolt.

[0056] Similarly, please see Figure 1 and Figure 2 As shown, a second mounting groove 12 is formed on the outer frame 1 of the door for accommodating the first sealing strip 3. Several second reinforcing plates 13 are arranged along the length of the second mounting groove 12. A second recessed groove 31 is formed on the first sealing strip 3 to fit against the second reinforcing plates 13. The second mounting groove 12 serves as a limiting cavity for the first sealing strip 3, and its main function is to provide a precisely defined installation space for the strip, thereby restricting the lateral position and axial movement of the strip as a whole.

[0057] The second assembly groove 12 is located in the cantilever section of the outer frame 1. Because this section loses the continuity of the main structure of the profile and has a relatively thin wall thickness, it is prone to local bending and torsion under stress. The second stiffening plate 13 is set inside the groove as a rigid positioning rib. The second stiffening plate 13 extends along the width direction of the second assembly groove 12 to play a role in rigid reinforcement.

[0058] Specifically, since the second assembly groove 12 is a locally weakened structure, and the second stiffening plate 13 has reinforcing ribs implanted inside the weakened area, the bending and torsional stiffness of the groove cross-section is greatly improved. As a local stiffening rib, the second stiffening plate 13 effectively reduces the side wall deformation when the cantilever section is under pressure, preventing the groove from beam-like warping due to the clamping load when the hatch is closed, ensuring the stability of the groove geometry, and fundamentally avoiding delamination, overturning or displacement of the rubber strip during the compression process.

[0059] It should be noted that the second recessed groove 31 on the first sealing strip 3 does not completely cut off the first sealing strip 3, but is only to accommodate the second rib plate 13 to be recessed inward to a certain depth, and does not affect the overall sealing performance of the first sealing strip 3.

[0060] Furthermore, extruded profiles cannot be extruded in one go to form a structure that extends laterally, has large differences in length and width in some areas, or abrupt changes in direction. Therefore, if the profile structure is relied upon entirely, the assembly groove can only maintain a simple thickness and cannot naturally produce local protrusions, recesses, or high-rigidity ribs.

[0061] In one specific embodiment, after the extruded profile is formed, the second assembly groove 12 and the corresponding second stiffener 13 structure are formed by cutting and grinding processes. However, due to the large length of the profile, the need to equip it with a corresponding positioning mechanism, and the difficulty in finding the entry angle of the cutting tool due to interference from other structures of the profile, the forming cost of this process is high and the process is relatively complicated.

[0062] Therefore, the present invention provides a manufacturing method for manufacturing a second assembly groove 12 and a second stiffening plate 13, comprising the following steps: Step 1: Door frame profile 1 obtained through extrusion process; Step 2: Locate and drill continuous anchor bolt holes on the outer frame 1 and the second stiffening plate 13; Step 3: Connect the outer frame 1 of the door to the second stiffening plate 13 with anchor bolts through the anchor bolt holes.

[0063] The split stiffening plates, produced through post-processing, can possess arbitrary thickness, localized reinforcement zones, and stepped structures. They can be tightly fitted to the second assembly groove 12, providing a precisely matched reinforcing surface. High-rigidity geometric features unattainable through profile extrusion can be achieved. The split second stiffening plate 13 overcomes the inherent structural limitations of the extrusion process, enabling the groove to acquire a reinforcing structure that would otherwise be impossible. The pre-tightening force generated after the anchor bolts are tightened ensures that the second stiffening plate 13 fits tightly against the wall surface of the door outer frame 1, creating a continuous load-bearing structure.

[0064] In an additional embodiment, the second stiffener 13 is fixed to the second mounting groove 12 by welding. However, during welding, the lightweight door frame 1 is prone to local warping, which will affect the geometric accuracy of the second mounting groove 12 and may damage the surface coating of the profile, leading to corrosion risks.

[0065] In one specific embodiment, the anchor bolt is an expansion anchor bolt or a chemical anchor bolt.

[0066] The present invention also provides a hatch, including the sealing structure described above, and further including a cabin wall panel 8 and a door leaf 9. The outer frame 1 of the door is disposed on the end wall of the cabin wall panel 8 and is coated with sealant between the mating surface of the door and the cabin wall panel 8. The door leaf frame 2 is disposed on the end wall of the door leaf 9.

[0067] First, after the bulkhead panel 8 is separated from the door frame 1 into independent components, the door frame 1 is no longer limited by the initial positional accuracy of the bulkhead panel when installed onto the bulkhead panel 8. It can achieve slight translation, slight rotation, and surface adjustment through screw connections or adjustable connection structures. This independent adjustability allows installers to realign the door frame 1 on-site based on bulkhead errors, opening deviations, or local deformations, thereby improving the overall assembly accuracy of the door system. The same principle applies to the separate structure of the door leaf 9 and the door leaf frame 2, giving the door leaf frame 2 independent attitude adjustment capability relative to the door leaf 9.

[0068] Secondly, the components around the hatch may experience localized structural deformation due to collisions, corrosion, fatigue damage, etc., during use. Since the outer frame 1, door leaf 9, and door leaf frame 2 are all independent components, only the damaged part needs to be replaced after damage occurs, without needing to replace the entire bulkhead panel 8 or the entire door leaf 9 assembly. This replaceability significantly improves maintenance efficiency, reduces downtime, and enhances the economy and sustainability of equipment operation and maintenance.

[0069] Furthermore, the independence of the outer door frame 1 and the door leaf frame 2 allows them to serve as mounting bases for various functional components, such as reinforcing plates, decorative panels, sealing compensation structures, sensor brackets, and wiring harness slots. Each component can be independently optimized based on the design of the sealing strips, the arrangement of mechanical pressure points, or the layout of decorative parts, without requiring a redesign of the entire cabin wall panel 8 or door leaf 9 body. This not only improves structural compatibility but also facilitates rapid derivation for different models and sealing levels.

[0070] Furthermore, an installation part 14 extending along the side wall of the cabin wall panel 8 is formed on the outer frame 1 of the door, and a rotating body 15 extending in the direction of the cabin wall panel 8 is formed at the end of the outer frame 1 away from the cabin wall panel 8. A filler 10 is provided between the outer frame 1 of the door and the cabin wall panel 8, and the filler 10 extends to the rotating body 15.

[0071] The mounting section 14 extends along the side wall of the hull panel 8, allowing the door frame 1 to be installed laterally close to the hull panel 8 without requiring deep insertion perpendicular to the hull panel 8. In the confined space of the hull, the hatch may not provide sufficient inward mounting distance, while lateral assembly can be completed without requiring a large space.

[0072] The rotating body 15 forms a reverse retaining edge extending toward the cabin wall panel 8, enclosing the filler 10 within a semi-enclosed cavity to prevent detachment, loosening, or displacement under vibration, impact, thermal expansion and contraction, or changes in air pressure. When the filler 10 performs functions such as heat insulation, energy absorption, and sound insulation, the rotating body 15 provides a relatively stable boundary, allowing the material's properties to be fully utilized within a more controlled cavity.

[0073] The filler 10 can be made of different materials, such as foam, sound-absorbing cotton, flame-retardant heat-insulating blocks, and density filler materials, to provide a functional sealing effect, depending on the needs of the hatch. The filler 10 is arranged between the outer frame 1 of the door and the end face of the cabin wall panel 8, providing additional performance and serving as: a heat insulation layer to improve the thermal management performance of the cabin; a flame-retardant layer to meet the fire protection requirements of special vehicles; an energy-absorbing layer for impact cushioning; a sound insulation layer to improve cabin comfort; and an absorption layer to absorb and block radiation, electromagnetic waves, etc.

[0074] The installation part 14, the rotating body 15, and the filling body 10 together constitute a structural system with assemblability, adjustability, filling capability, expandability, and stability, which greatly improves the structural composite capability and application scenario adaptability of the interface around the hatch.

[0075] It should be noted that this application is not limited to the above-described embodiments. The above embodiments are merely examples, and any embodiments with the same structure and effect as the technical concept within the scope of this application are included in the technical scope of this application. Furthermore, various modifications that can be conceived by those skilled in the art to the embodiments, and other ways of constructing by combining some of the constituent elements of the embodiments, without departing from the spirit of this application, are also included in the scope of this application.

Claims

1. A sealing structure, characterized in that, include: The door frame (1) is provided with a first sealing strip (3), and a first mechanical pressure point (11) is provided at the position where the door frame (1) and the first sealing strip (3) are adjacent. A door frame (2) is provided with a second sealing strip (4), and a second mechanical pressure point (21) is provided at the position where the door frame (2) and the second sealing strip (4) are adjacent. The first mechanical pressure point (11) can contact the second sealing strip (4), and the second mechanical pressure point (21) can contact the first sealing strip (3).

2. The sealing structure according to claim 1, characterized in that, It also includes a type B rubber strip (5), which is installed on one of the door outer frame (1) and the door leaf frame (2). The door outer frame (1) or the door leaf frame (2) is provided with a third mechanical pressure point (6) that can contact the type B rubber strip (5) when the hatch hinge is installed.

3. The sealing structure according to claim 2, characterized in that, A first assembly groove (22) is formed on the door frame (2) for accommodating the type B adhesive strip (5). A number of first stiffeners (23) are provided along the length of the first assembly groove (22). A first recessed groove (51) is formed on the type B adhesive strip (5) to fit the first stiffeners (23).

4. A sealing structure according to claim 1, characterized in that, When the first mechanical pressure point (11) presses the second sealing strip (4), the portion of the second sealing strip (4) relative to the first sealing strip (3) extends toward the direction of the first sealing strip (3); and / or When the second mechanical pressure point (21) presses the first sealing strip (3), the portion of the first sealing strip (3) relative to the second sealing strip (4) extends toward the second sealing strip (4).

5. A sealing structure according to claim 4, characterized in that, An air cavity (7) is formed in the first sealing strip (3) and / or the second sealing strip (4), and the first mechanical pressure point (11) and / or the second mechanical pressure point (21) eccentrically press the air cavity (7).

6. A sealing structure according to claim 1, characterized in that, A second mounting groove (12) is formed on the outer frame (1) for the first sealing strip (3) to be accommodated. A number of second reinforcing plates (13) are provided along the length of the second mounting groove (12). A second recessed groove (31) is formed on the first sealing strip (3) to fit with the second reinforcing plates (13).

7. A hatch, comprising the sealing structure as described in claim 2, characterized in that, It also includes a cabin wall panel (8) and a door leaf (9). The door outer frame (1) is set on the end wall of the cabin wall panel (8) and is coated with sealant between the mating surface of the door and the cabin wall panel (8). The door leaf frame (2) is set on the end wall of the door leaf (9).

8. A hatch according to claim 7, characterized in that, An installation part (14) extending along the side wall of the cabin wall panel (8) is formed on the outer frame of the door (1). A rotating body (15) extending in the direction of the cabin wall panel (8) is formed at the end of the outer frame of the door (1) away from the cabin wall panel (8). A filler (10) is provided between the outer frame of the door (1) and the cabin wall panel (8). The filler (10) extends to the rotating body (15).

9. A manufacturing method for producing the sealing structure as described in claim 3, characterized in that, Includes the following steps: S1.1, Door frame (1) profile obtained by extrusion process; S1.

2. Locate and open continuous anchor bolt holes on the outer frame (1) and the first stiffening plate (23); S1.3 Connect the outer frame (1) of the door to the first stiffening plate (23) with anchor bolts through the anchor bolt holes.

10. A manufacturing method for producing the sealing structure as claimed in claim 6, characterized in that, Includes the following steps: S2.1, Door frame (1) profile obtained by extrusion process; S2.

2. Locate and open continuous anchor bolt holes on the outer frame (1) and the second stiffening plate (13); S2.3 Connect the outer frame (1) of the door with the second stiffening plate (13) through the anchor bolt holes.

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