Access cover, access cover mounting structure and vehicle

Abstract

The present application relates to the technical field of access openings with movable or detachable covers for vehicles, and in particular to an access cover, an access cover mounting structure and a vehicle. The access cover comprises a cover body and an outer frame located at an edge of the cover body, wherein an upper surface of the cover body is of a planar structure, the outer frame comprises a pressing edge, and a recessed structure is provided at the edge of the cover body for allowing the pressing edge of the outer frame to reset thereon, such that after the pressing edge of the outer frame rests on the edge of the cover body, the top of the outer frame is flush with the upper surface of the cover body.

Description

An inspection port cover, an inspection port cover mounting structure, and a vehicle Technical Field

[0001] This application relates to the field of vehicle access technology with movable or detachable covers, and particularly to an inspection cover, an inspection cover mounting structure, and a vehicle. Background Technology

[0002] With the rapid development of my country's bus market, a large number of buses, passenger buses, and tour buses have been put into use. During the manufacturing process of these types of vehicles, inspection ports are opened on the vehicle body to facilitate the repair and replacement of internal parts. After being assembled into a complete vehicle, the inspection ports are usually located in the aisle of the passenger compartment. During daily operation, inspection port covers are installed at the inspection ports to prevent dust from falling into the internal parts of the vehicle and causing malfunctions, while also facilitating the movement of passengers in the passenger compartment. When a bus malfunctions, maintenance personnel can open the inspection port cover to repair the internal parts of the vehicle through the inspection port. However, because the engine noise is relatively high during vehicle operation, the noise can easily enter the passenger compartment through the inspection port, causing inconvenience to passengers.

[0003] To address the aforementioned issues, Chinese utility model patent CN213008415U, with an authorization announcement date of April 20, 2021, discloses a double-layer sealed, double-layer heat-insulating and noise-reducing inspection cover assembly for buses. This inspection cover assembly includes an inspection cover plate assembly and a bottom frame aluminum profile. A second heat-insulating and noise-reducing layer is provided below the inspection cover plate assembly. The inspection cover plate assembly is pressed downwards, and the second heat-insulating and noise-reducing layer is connected to the bottom frame aluminum profile by fastening bolts. The inspection cover plate assembly includes an upper cover. The first heat insulation and noise reduction layer is bonded to the lower surface of the upper cover plate. A bubble-sealed strip is set at the lower part of the bottom frame aluminum profile. The second heat insulation and noise reduction layer squeezes the bubble-sealed strip to partially compress and deform it to form the first seal. There are two semi-circular protrusions on the lower support surface of the bottom frame aluminum profile. The second heat insulation and noise reduction layer will deform at the semi-circular protrusions due to the force to form the second seal. The double-layer seal and double-layer heat insulation and noise reduction structure can better play the role of sealing, heat insulation and noise reduction, and improve the passenger riding experience.

[0004] In the above solution, the inspection cover assembly also includes decorative cover aluminum profiles. Currently, the existing decorative cover aluminum profiles are all located between the upper cover and the car floor. The side of the decorative cover aluminum profile closest to the car floor has a floor edging, and the side closest to the upper cover has a cover edging. The upper cover is flush with the car floor, but both the floor edging and the cover edging protrude from the upper surface of the car floor and the upper cover. This makes it inconvenient to clean and can easily cause passengers to trip and fall while walking. Summary of the Invention

[0005] The purpose of this application is to provide an access cover that addresses the problem of existing decorative aluminum profiles protruding from the upper surface of the access cover, which easily causes passengers to trip and fall while walking. Furthermore, this application also aims to provide an access cover mounting structure that solves the same problem. Additionally, this application provides a vehicle that, by using the aforementioned access cover mounting structure, solves the problem of passengers easily tripping and falling while walking inside the vehicle due to the protruding decorative aluminum profiles.

[0006] To achieve the above objectives, the inspection port cover of this application adopts the following technical solution:

[0007] An inspection cover includes a cover body and an outer frame located at the edge of the cover body. The upper surface of the cover body is a planar structure. The outer frame includes a pressing edge. A recessed structure is provided at the edge of the cover body for the pressing edge of the outer frame to overlap, so that after the pressing edge of the outer frame overlaps the edge of the cover body, the top of the outer frame is flush with the upper surface of the cover body.

[0008] Furthermore, the sunken structure is a downward slope from the inside out, and the lower side of the pressing edge is a downward pressing slope that matches the downward slope.

[0009] Furthermore, the sinking structure is a sinking groove, and the depth of the sinking groove is equal to the maximum thickness of the pressing edge.

[0010] Furthermore, the upper surface of the outer frame is flat.

[0011] Furthermore, the outer frame is a profile frame, which includes side walls extending vertically and a bidirectional flange at the top of the side walls. The inward flange of the bidirectional flange forms a pressing edge, and the bottom of the side walls is provided with an inwardly extending lower retaining edge. The cover body is fitted between the pressing edge and the lower retaining edge.

[0012] Furthermore, the cover body includes a cover floor and a floor covering laid in a conformal manner on the cover floor, with the floor covering sandwiched between the edge and the cover floor.

[0013] Furthermore, the inspection port cover also includes a bottom cover, which is connected to the bottom of the outer frame, and a noise reduction layer is filled between the bottom cover and the port cover body.

[0014] Beneficial effects: The access cover of this application is an improved invention. By setting a recessed structure at the edge of the cover body, the upper surface of the cover body is made flat, and the pressing edge of the outer frame of the cover body rests on the recessed structure, so that the top of the outer frame is flush with the upper surface of the cover body, forming an access cover with a flush upper surface. In actual use, the access cover with a flush upper surface is installed in the vehicle's access port, which can ensure that passengers can walk freely in the carriage without tripping.

[0015] The inspection port cover installation structure of this application adopts the following technical solution:

[0016] The access cover mounting structure includes a vehicle floor and an access port located on the vehicle floor. An access cover is installed at the access port. The access cover includes a cover body and an outer frame located at the edge of the cover body. The outer frame of the access cover has an outward flange. The upper surface of the access cover is generally flat. The edge of the access port where the outward flange rests has a recessed structure so that when the access cover is fastened to the access port, the upper surface of the vehicle floor is flush with the upper surface of the access cover.

[0017] Furthermore, the sunken structure is a sloping surface that slopes from the inside out, and the lower side of the outer flange is an overlapping sloping surface that is adapted to the sloping surface.

[0018] Furthermore, the sunken structure is a sunken overlapping groove, and the depth of the sunken overlapping groove is equal to the maximum thickness of the outer flange.

[0019] Furthermore, the vehicle floor includes a floor body and a floor covering laid conformally on the floor body, with the floor covering sandwiched between the outer flange and the floor body.

[0020] Furthermore, the outer frame of the inspection cover also has an inner flange, which forms a pressing edge. The edge of the cover body on which the inner flange of the outer frame rests is a recessed structure, so that the inner flange of the outer frame rests on the recessed structure of the edge of the cover body, making the top of the outer frame flush with the upper surface of the cover body.

[0021] Furthermore, the recessed structure on the cap body is a downward slope from the inside out, and the lower side of the pressing edge of the outer frame is a downward pressing slope that matches the downward slope.

[0022] Furthermore, the recessed structure on the cap body is a recessed groove, and the depth of the recessed groove is equal to the maximum thickness of the pressing edge.

[0023] Furthermore, the upper surface of the outer frame is flat.

[0024] Furthermore, the outer frame is a profile frame, which includes side walls extending vertically and vertically and a bidirectional flange at the top of the side walls. The outward flange of the bidirectional flange is used to rest on the edge of the access port. The bottom of the side walls is provided with an inwardly extending lower retaining edge, and the cover body is secured between the pressing edge and the lower retaining edge.

[0025] Furthermore, the cover body includes a cover floor and a floor covering laid on the cover floor in a conformal manner, with the floor covering sandwiched between the edge and the cover floor.

[0026] Furthermore, the inspection port cover also includes a bottom cover, which is connected to the bottom of the outer frame, and a noise reduction layer is filled between the bottom cover and the port cover body.

[0027] Beneficial Effects: The access cover installation structure of this application is an improved invention. By utilizing an access cover with the upper surface of the outer frame flush with the upper surface of the cover body, and by setting the edge of the access cover where the outer flange of the outer frame overlaps as a recessed structure, a design is achieved where the upper surface of the vehicle floor is flush with the upper surface of the access cover when the access cover is installed inside the access cover. In addition, the upper surface of the access cover itself is also flush. In practical use, when the access cover is installed inside the access cover, the outer frame is flush with both the cover body and the vehicle floor, ensuring that passengers can walk freely inside the carriage without tripping.

[0028] The vehicle in this application adopts the following technical solution:

[0029] The vehicle has an access cover mounting structure, which includes a vehicle floor and an access door located on the vehicle floor. An access cover is installed at the access door. The access cover includes a cover body and an outer frame located at the edge of the cover body. The outer frame of the access cover has an outward flange. The upper surface of the access cover is generally flat. The edge of the access door where the outward flange rests is recessed so that when the access cover is fastened to the access door, the upper surface of the floor is flush with the upper surface of the access cover.

[0030] Furthermore, the sunken structure is a sloping surface that slopes from the inside out, and the lower side of the outer flange is an overlapping sloping surface that is adapted to the sloping surface.

[0031] Furthermore, the sunken structure is a sunken overlapping groove, and the depth of the sunken overlapping groove is equal to the maximum thickness of the outer flange.

[0032] Furthermore, the vehicle floor includes a floor body and a floor covering laid conformally on the floor body, with the floor covering sandwiched between the outer flange and the floor body.

[0033] Furthermore, the outer frame of the inspection cover also has an inner flange, which forms a pressing edge. The edge of the cover body on which the inner flange of the outer frame rests is a recessed structure, so that the inner flange of the outer frame rests on the recessed structure of the edge of the cover body, making the top of the outer frame flush with the upper surface of the cover body.

[0034] Furthermore, the recessed structure on the cap body is a downward slope from the inside out, and the lower side of the outer frame pressing edge is a downward pressing slope that matches the downward slope.

[0035] Furthermore, the recessed structure on the cap body is a recessed groove, and the depth of the recessed groove is equal to the maximum thickness of the pressing edge.

[0036] Furthermore, the upper surface of the outer frame is flat.

[0037] Furthermore, the outer frame is a profile frame, which includes side walls extending vertically and a bidirectional flange at the top of the side walls. The outward flange is used to rest on the edge of the access port. The bottom of the side walls is provided with an inwardly extending lower retaining edge, and the cover body is secured between the pressing edge and the lower retaining edge.

[0038] Furthermore, the cover body includes a cover floor and a floor covering laid on the cover floor in a conformal manner, with the floor covering sandwiched between the edge and the cover floor.

[0039] Furthermore, the inspection port cover also includes a bottom cover, which is connected to the bottom of the outer frame, and a noise reduction layer is filled between the bottom cover and the port cover body.

[0040] Beneficial Effects: The vehicle described in this application is an improved invention. By utilizing an inspection cover whose outer frame is flush with the upper surface of the cover body, and by setting the edge of the inspection opening where the outer flange overlaps with the outer frame as a recessed structure, a design is achieved where the upper surface of the vehicle floor is flush with the upper surface of the inspection cover when the inspection cover is installed inside the inspection opening. In addition, the upper surface of the inspection cover itself is also flush. In practical use, when the inspection cover is installed inside the inspection opening, the outer frame of the inspection cover is flush with both the cover body and the vehicle floor, ensuring that passengers can walk freely inside the passenger compartment without tripping. Attached Figure Description

[0041] Figure 1 is a schematic cross-sectional view of an embodiment of the access cover of this application installed in an access panel on the vehicle floor.

[0042] In the diagram: 1. Cover body; 2. Outer frame; 3. Pressing edge; 4. Lower slope; 5. Lower pressing slope; 6. Side wall; 7. Lower retaining edge; 8. Cover floor; 9. Floor covering; 10. Bottom cover; 11. Noise reduction layer; 12. Vehicle floor; 13. Inspection port; 14. Outer flange; 15. Recessed overlap groove; 16. Overlap slope; 17. Floor body; 18. Inner flange. Detailed Implementation

[0043] The features and performance of this application will be further described in detail below with reference to embodiments.

[0044] This application addresses the problem that when existing inspection covers are installed on inspection hatches inside the passenger compartment, the profile frame between the inspection cover and the passenger compartment floor protrudes, causing passengers to trip and fall. By setting recessed structures on both the inspection hatch cover and the passenger compartment floor, the profile frame is installed within these recessed structures, achieving a flush alignment between the profile frame and both the inspection hatch cover and the passenger compartment floor, allowing passengers to walk freely within the passenger compartment. Based on this inventive concept, this application proposes an inspection hatch cover, an inspection hatch cover installation structure, and a vehicle. By setting a recessed structure at the edge of the hatch body where the inner flange of the outer frame overlaps, and also at the inspection hatch where the outer flange of the outer frame overlaps, the inner and outer flanges of the outer frame overlap within the recessed structures on their respective sides, thus achieving a recessed design for the outer frame and ensuring its flush alignment with the vehicle floor and the hatch body.

[0045] The implementation method of the access cover in this application is as follows:

[0046] Referring to Figure 1, as a basic embodiment of this application, the inspection hatch includes a hatch body 1 and an outer frame 2 located at the edge of the hatch body 1. In practical engineering applications, the hatch body 1 is usually rectangular. The outer frame 2 at the four edges of the hatch body 1 is formed by two U-shaped frames joined together to form a rectangular outer frame 2, or by a U-shaped frame and a straight edge sealing to form a rectangular outer frame 2. The upper surface of the hatch body 1 is a planar structure, and the edge of the hatch body 1 where the pressing edge 3 of the outer frame 2 rests is a recessed structure, so that after the pressing edge 3 of the outer frame 2 rests on the edge of the hatch body 1, the top of the outer frame 2 is flush with the upper surface of the hatch body 1. This setting can realize the recessed design of the outer frame 2, so that the top of the outer frame 2 is flush with the upper surface of the hatch body 1, forming an inspection hatch with a flush upper surface. In specific use, the inspection hatch with a flush upper surface is installed in the vehicle's inspection hatch 13, which can ensure that passengers can walk freely in the carriage without tripping, and also facilitates the cleaning of the carriage by staff.

[0047] As a preferred embodiment of this application, as shown in Figure 1, the sinking structure is a downward slope 4 from the inside out, and the lower side of the pressing edge 3 of the outer frame 2 is a downward pressing slope 5 adapted to the downward slope 4. In this embodiment, the four edges of the cap body 1 are provided with downward slope 4 extending from the inside to the outside as sinking structures. The pressing edge 3 of the outer frame 2 overlaps on the downward slope 4, so that the downward pressing slope 5 is parallel and attached to the downward slope 4, so that the upper surface of the cap body 1 is completely flush with the upper surface of the outer frame 2.

[0048] Based on the above embodiments, as a preferred embodiment of this application, the sinking structure is a sinking groove, the depth of which is equal to the maximum thickness of the pressing edge 3. The sinking groove extends along the thickness direction of the cap body 1. At this time, the pressing edge 3 of the outer frame 2 sinks down and overlaps in the sinking groove, so that the upper surface of the outer frame 2 is flush with the upper surface of the cap body 1. In this embodiment, when the lower side of the pressing edge 3 is the aforementioned pressing slope 5, it is sufficient to ensure that the maximum thickness of the pressing edge 3 is equal to the depth of the sinking groove to achieve flushing. In other embodiments, the lower side of the pressing edge 3 can also be set as a plane. In this case, the thickness of each part of the pressing edge 3 is consistent, and it is sufficient to ensure that the thickness of the pressing edge 3 is equal to the depth of the sinking groove to achieve flushing. In addition, in this embodiment, sinking grooves are provided as sinking structures on all four edges of the cap body 1, and the pressing edge 3 of the outer frame 2 can directly sink down and overlap in the sinking groove.

[0049] Based on the above embodiments, as a preferred embodiment of this application, the upper surface of the outer frame 2 is made flat, so that the upper surface of the outer frame 2 is completely flush with the upper surface of the cover body 1, further improving the comfort and flatness of passenger walking. In other embodiments, the upper surface of the outer frame 2 can also be made into an arc surface, and the arc surface of the outer frame 2 is also recessed into the recessed structure. In this case, it is sufficient to ensure that the horizontal plane where the highest point of the arc surface is located is flush with the upper surface of the cover body 1. The arc surface can disperse the stress on the outer frame 2, improve the service life of the outer frame 2, and at the same time, the arc surface will not create steps and will not cause passengers to trip and fall.

[0050] In a preferred embodiment of this application, the outer frame 2 is a profile frame. The profile has good structural strength, can withstand long-term pressure, and will not easily deform. The profile frame includes vertically extending side walls 6 and a bidirectional flange at the top of the side walls 6. The inward flange of the bidirectional flange forms a pressing edge 3, and the outward flange of the bidirectional flange is used to rest on the edge of the access port 13. The bottom of the side walls 6 is provided with an inwardly extending lower retaining edge 7. The cover body 1 is held between the pressing edge 3 and the lower retaining edge 7. The pressing edge 3, the side walls 6, and the lower retaining edge 7 are integrally formed to constitute the profile frame, which can provide strong support for the cover body 1 and has good connection reliability. In other embodiments, the outer frame 2 can also be set as an integrally formed T-shaped frame. The crossbeam of the T-shaped frame forms the pressing edge 3, and the longitudinal beam of the T-shaped frame forms the side walls 6. The retaining edge is connected to the lower end of the T-shaped frame by a connector. The cover body 1 is engaged by the retaining edge and the pressing edge 3. The outer frame 2 configured in this way also has high strength.

[0051] As a preferred embodiment of this application, the cover body 1 includes a cover floor 8 and a floor covering 9 laid on the cover floor 8 in a conformal manner. The floor covering 9 is sandwiched between the pressing edge 3 and the cover floor 8. The floor covering 9 will sink along with the sunken structure. When the outer frame 2 is engaged with the cover body 1, the pressing edge 3 of the outer frame 2 overlaps the floor covering 9 above the sunken structure so that the upper surface of the outer frame 2 is flush with the upper surface of the floor covering 9. The floor covering 9 can prevent passengers from slipping and falling while walking. The flush arrangement of the upper surface of the outer frame 2 with the upper surface of the floor covering 9 can allow passengers to walk freely in the carriage without tripping.

[0052] In a preferred embodiment of this application, in practical engineering applications, vehicle interiors typically generate significant noise. Therefore, the access cover also includes a bottom cover 10, which is connected to the bottom of the outer frame 2. A noise-reducing layer 11 is installed between the bottom cover 10 and the access cover body 1. The noise-reducing layer 11 isolates the noise source, preventing noise from being transmitted into the passenger compartment and affecting the passenger's riding experience. The bottom cover 10 provides good structural strength for the noise-reducing layer 11 and the access cover body 1. The bottom cover 10 is fixedly connected to the outer frame 2. Here, the bottom cover 10 can be connected to the outer frame 2 by welding or by fasteners such as bolts, as long as the reliability of the connection between the bottom cover 10 and the outer frame 2 is ensured. In other embodiments, if there is no noise source under the floor, the noise-reducing layer 11 is omitted to reduce the weight of the access cover.

[0053] The installation process of the access cover assembly of this application is as follows: The cover body 1 connected with the floor covering 9 is snapped into the outer frame 2. During the snapping process, the pressing edge 3 of the outer frame 2 will overlap the upper surface of the slope 4 or the sinkhole. At this time, the upper surface of the outer frame 2 is flush with the upper surface of the floor covering 9, forming a flush access cover. Finally, the flush access cover is installed at the vehicle's access port 13.

[0054] The implementation method of the access cover mounting structure in this application is as follows:

[0055] Referring to Figure 1, as a basic embodiment of this application, the access cover mounting structure includes a vehicle floor 12 and an access port 13 disposed on the vehicle floor. An access cover is installed at the access port 13. The access cover includes a cover body 1 and an outer frame 2 located at the edge of the cover body 1. The outer frame 2 of the access cover has an outer flange 14. The upper surface of the access cover is entirely planar. The edge of the access port 13 where the outer flange 14 rests is recessed, so that when the access cover is fastened to the access port 13, the upper surface of the floor is flush with the upper surface of the access cover. This embodiment... The inspection cover, with its upper surface flush with the upper surface of the cover body 1, and the edge of the inspection opening 13 where the outer flange 14 of the outer frame 2 overlaps, is designed as a recessed structure. This achieves a design where the upper surface of the vehicle floor 12 is flush with the upper surface of the inspection cover when the inspection cover is installed inside the inspection opening 13. In addition, the upper surface of the inspection cover itself is also designed to be flush. In actual use, when the inspection cover is installed inside the inspection opening 13, the outer frame 2 is flush with both the cover body 1 and the vehicle floor 12, ensuring that passengers can walk freely in the carriage without tripping.

[0056] As a preferred embodiment of this application, the sunken structure is a sloping surface that slopes from the inside out. The lower side of the outer flange 14 is an overlapping slope 16 that is adapted to the sloping surface. When the outer flange 14 of the outer frame 2 overlaps above the sunken structure at the edge of the access port 13, the overlapping slope 16 is parallel and fits against the sloping surface. At this time, the outer frame 2 is flush with the access port 13, that is, the access port cover is flush with the vehicle floor 12.

[0057] Based on the above embodiments, as a preferred embodiment of this application, the sunken structure is a sunken overlapping groove 15. The depth of the sunken overlapping groove 15 is equal to the maximum thickness of the outer flange 14. When the outer flange 14 of the outer frame 2 overlaps in the sunken overlapping groove 15 at the edge of the inspection port 13, the outer frame 2 is flush with the inspection port 13, that is, the inspection port cover is flush with the vehicle floor 12. In this embodiment, when the lower side of the outer flange 14 is the aforementioned overlapping slope 16, flushing can be achieved by ensuring that the maximum thickness of the outer flange 14 is equal to the groove depth of the sunken overlapping groove 15. In other embodiments, the lower side of the outer flange 14 can also be set as a plane. In this case, the thickness of each part of the outer flange 14 is consistent, and flushing can be achieved by ensuring that the thickness of the outer flange 14 is equal to the groove depth of the sunken overlapping groove 15.

[0058] Based on the above embodiments, as a preferred embodiment of this application, as shown in FIG1, the sunken structure is set as a sunken overlapping groove 15, and the lower side of the outer flange 14 is set as an overlapping slope 16, so that the outer flange 14 sinks and overlaps in the sunken overlapping groove 15, and the overlapping slope 16 will partially contact the sunken overlapping groove 15. At this time, ensuring that the maximum thickness of the outer flange 14 with the overlapping slope 16 is equal to the groove depth of the sunken overlapping groove 15 can achieve flushing.

[0059] As a preferred embodiment of this application, the vehicle floor 12 includes a floor body 17 and a floor covering 9 laid thereon. The floor covering 9 is sandwiched between the outer flange 14 and the floor body 17. The floor covering 9 will sink along with the sinking structure. When the outer flange 14 of the outer frame 2 overlaps the sinking overlap groove 15 or the slope surface, the upper surface of the outer frame 2 is flush with the upper surface of the floor covering 9.

[0060] As a preferred embodiment of this application, the access cover is selected from the access cover described in the above embodiments. The outer frame 2 of the access cover is attached to the cover body 1 by a recessed structure, so that the access cover is flush with the vehicle floor 12. In other embodiments, the outer frame 2 can also be set as a Z-shaped frame, so that the cover body 1 is placed on the lower horizontal side of the Z-shaped frame, and the upper side of the cover body 1 is flush with the upper surface of the upper horizontal side of the Z-shaped frame. This can also achieve the flush design of the access cover itself. When the access cover in this embodiment is installed in the access port, the flush design of the access cover and the vehicle floor 12 can also be achieved.

[0061] The installation process of the access cover mounting structure of this application is as follows: First, a recessed overlapping groove 15 or a sloped surface is set at the edge of the access cover 13 on the floor body 17. Then, the floor covering 9 is glued or connected to the upper surface of the floor body 17 by other means. Subsequently, the flush access cover is installed in the access cover 13. During this installation process, the overlapping slope 16 of the outer frame 2 will overlap and fit with the floor covering 9 on the recessed overlapping groove 15 or sloped surface. At this time, the upper surface of the outer frame 2 is flush with the upper surface of the floor covering 9 on the floor body 17, forming a flush design between the access cover and the vehicle floor 12.

[0062] The implementation method of the vehicle in this application:

[0063] The vehicle includes an access cover mounting structure, which is the same as the access cover mounting structure described above, and will not be repeated here.

[0064] The above description is merely a preferred embodiment of this application and is not intended to limit this application. The scope of patent protection of this application shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of this application shall also be included within the scope of protection of this application.

Claims

1. An inspection cover, comprising a cover body and an outer frame located at the edge of the cover body, characterized in that: The upper surface of the cap body is a planar structure, the outer frame includes a pressing edge, and a recessed structure is provided at the edge of the cap body for the pressing edge of the outer frame to overlap, so that after the pressing edge of the outer frame overlaps the edge of the cap body, the top of the outer frame is flush with the upper surface of the cap body.

2. The inspection port cover according to claim 1, characterized in that: The sinking structure is a downward slope from the inside out, and the lower side of the pressing edge is a downward pressing slope that is adapted to the downward slope.

3. The inspection port cover according to claim 1, characterized in that: The sinking structure is a sinking groove, wherein the depth of the sinking groove is equal to the maximum thickness of the pressing edge.

4. The inspection port cover according to any one of claims 1-3, characterized in that: The upper surface of the outer frame is flat.

5. The inspection port cover according to any one of claims 1-3, characterized in that: The outer frame is a profile frame, which includes vertically extending side walls and a bidirectional flange at the top of the side walls. The inward flange of the bidirectional flange forms the pressing edge. The bottom of the side walls is provided with an inwardly extending lower retaining edge. The cover body is secured between the pressing edge and the lower retaining edge.

6. The inspection port cover according to claims 1-5, characterized in that: The cap body includes a cap floor and a floor covering laid in a conformal manner on the cap floor, with the floor covering sandwiched between the pressing edge and the cap floor.

7. The inspection port cover according to any one of claims 1-6, characterized in that: The inspection port cover also includes a bottom cover, which is connected to the bottom of the outer frame, and a noise reduction layer is filled between the bottom cover and the port cover body.

8. A maintenance access cover mounting structure, comprising a vehicle floor and a maintenance access provided on the vehicle floor, wherein a maintenance access cover is installed at the maintenance access, the maintenance access cover comprising a cover body and an outer frame located at the edge of the cover body, the outer frame of the maintenance access cover having an outward flange, characterized in that: The upper surface of the inspection port cover is a planar structure, and the edge of the inspection port where the outer flange rests is a recessed structure, so that when the inspection port cover is fastened over the inspection port, the upper surface of the vehicle floor is flush with the upper surface of the inspection port cover.

9. The inspection port cover mounting structure according to claim 8, characterized in that: The sunken structure is a sloping surface that slopes from the inside out, and the lower side of the outer flange is an overlapping sloping surface that is adapted to the sloping surface.

10. The inspection port cover mounting structure according to claim 8, characterized in that: The sunken structure is a sunken overlapping groove, and the depth of the sunken overlapping groove is equal to the maximum thickness of the outer flange.

11. The inspection port cover mounting structure according to any one of claims 8-10, characterized in that: The vehicle floor includes a floor body and a floor covering laid on the floor body in a conformal manner, the floor covering being sandwiched between the outer flange and the floor body.

12. The inspection port cover mounting structure according to any one of claims 8-10, characterized in that: The outer frame of the inspection cover also has an inner flange, which forms a pressing edge. The edge of the cover body on which the inner flange of the outer frame rests is a recessed structure, so that the inner flange of the outer frame rests on the recessed structure of the edge of the cover body, making the top of the outer frame flush with the upper surface of the cover body.

13. The inspection port cover mounting structure according to claim 12, characterized in that: The recessed structure on the cap body is a downward slope from the inside out, and the lower side of the pressing edge of the outer frame is a downward pressing slope that matches the downward slope.

14. The inspection port cover mounting structure according to claim 12, characterized in that: The recessed structure on the cap body is a recessed groove, and the depth of the recessed groove is equal to the maximum thickness of the pressing edge.

15. A vehicle, including a maintenance access cover mounting structure provided in the vehicle, characterized in that: The access cover mounting structure includes the access cover mounting structure as described in any one of claims 8-14.

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