Opening cover plate, vehicle protection plate and opening cover plate mounting method

Abstract

The invention belongs to the technical field of automobile engineering, and discloses an opening cover plate, an automobile protection plate and an opening cover plate mounting method. The opening cover plate comprises a cover plate main body and a movable plate, the cover plate main body can be clamped on an overhaul structure, and an observation opening is formed in the cover plate main body; the movable plate is movably arranged on the cover plate main body, the movable plate has a use state of blocking the observation opening and an observation state of opening the observation opening, in the use state, the movable plate can be connected with the overhaul structure in an inserted mode, and in the observation state, the movable plate can be separated from the overhaul structure. The open cover plate has a visualization function, improves the disassembly and assembly efficiency and the installation precision on the maintenance structure, and improves the use feeling of maintenance personnel.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automotive engineering, and in particular to an opening cover plate, a vehicle fender and an opening cover plate mounting method. BACKGROUND

[0002] In the automobile manufacturing process, in order to facilitate subsequent maintenance, detection and maintenance operations, openings are usually reserved in key areas such as engine compartment covers, fuel tank covers, charging ports and fenders, and maintenance cover plates are provided for these openings. During the daily use of the vehicle, the maintenance cover plate can effectively seal the reserved opening, thereby ensuring the sealing and durability of the vehicle; when the key area needs to be repaired, the corresponding maintenance cover plate only needs to be opened, and the target area can be accessed through the reserved opening to carry out related operations.

[0003] In the prior art, the installation of the maintenance cover plate generally adopts the mode of "first plugging the opening and then connecting with the vehicle body". However, during the installation process, the opening is plugged, making it difficult for maintenance personnel to directly observe the docking condition of the inner side of the maintenance cover plate and the vehicle body, which not only poses a challenge to the installation precision, but also to some extent weakens the convenience of maintenance operations. In addition, in the prior art, the connection between the maintenance cover plate and the vehicle body mainly relies on screws or knobs for fastening, which makes the disassembly and assembly process of the maintenance cover plate complicated and inefficient, especially for scenarios that require frequent maintenance operations.

[0004] Therefore, there is an urgent need for an opening cover plate, a vehicle fender and an opening cover plate mounting method to solve the above problems. SUMMARY

[0005] The present application aims to provide an opening cover plate, a vehicle fender and an opening cover plate mounting method, which has a visualization function, improves the disassembly and assembly efficiency and installation precision on the maintenance structure, and improves the user experience of maintenance personnel.

[0006] To achieve this purpose, the present application adopts the following technical solutions:

[0007] In a first aspect, an opening cover plate is provided, comprising:

[0008] A cover plate body capable of being clamped on a maintenance structure, the cover plate body being provided with an observation port;

[0009] An activity plate movably arranged on the cover plate body, the activity plate having a use state of plugging the observation port and an observation state of opening the observation port, in the use state, the activity plate is capable of being inserted into the maintenance structure, and in the observation state, the activity plate is capable of being separated from the maintenance structure.

[0010] Optionally, the activity plate is provided with a locking portion, in the use state, the locking portion is capable of being inserted into the maintenance structure and being clamped with the maintenance structure.

[0011] Optionally, the locking part and the maintenance structure are provided with a clamping block and a clamping groove, respectively, and the clamping block is clamped in the clamping groove in the use state and is separated from the clamping groove in the observation state.

[0012] Optionally, the cover plate body is provided with a mounting groove, and the movable plate is movably arranged in the mounting groove, and the movable plate is at least partially arranged in the mounting groove in the observation state, and the movable plate is moved out of the mounting groove when the movable plate is switched from the observation state to the use state.

[0013] Optionally, the movable plate is slidably connected with the cover plate body.

[0014] Optionally, the movable plate is rotatably connected with the cover plate body.

[0015] Optionally, the opening cover plate further comprises a clamping piece arranged on the cover plate body, and the cover plate body is clamped with the maintenance structure through the clamping piece.

[0016] Optionally, the opening cover plate further comprises an operation part arranged on the movable plate.

[0017] In a second aspect, a vehicle guard plate is provided, comprising a guard plate body and the opening cover plate of the first aspect, the guard plate body is provided with a maintenance opening, and the opening cover plate is detachably arranged on the guard plate body and used for plugging the maintenance opening.

[0018] In a third aspect, an opening cover plate mounting method is provided, which is suitable for the opening cover plate of the first aspect and comprises the following steps:

[0019] S1, switching the movable plate to the observation state;

[0020] S2, clamping the cover plate body to the maintenance structure;

[0021] S3, driving the movable plate to move until the movable plate is inserted into the maintenance structure, and the movable plate is switched to the use state.

[0022] Compared with the prior art, the opening cover plate has the following advantages:

[0023] The application provides an opening cover plate, a vehicle guard plate and an opening cover plate mounting method. In an observation state, an observation port is opened, so that a maintenance worker can observe the connection state between the inside of the opening cover plate and the maintenance structure through the observation port when connecting the cover plate body and the maintenance structure, that is, the opening cover plate has a visual function, which helps to improve the convenience of connecting the cover plate body and the maintenance structure and the precision of mounting the cover plate body on the maintenance structure. After the cover plate body and the maintenance structure are clamped, the movable plate is switched to a use state to block the observation port. At this time, the cover plate body and the movable plate together can block the opening on the maintenance structure to ensure the sealing property and durability of the maintenance structure during daily use. In the use state, the movable plate is inserted into the maintenance structure, and the movable plate and the cover plate body jointly act, so that the opening cover plate can be stably mounted on the maintenance structure. When the cover plate body needs to be separated from the maintenance structure, the movable plate can be pulled out of the maintenance structure, which is convenient and fast and significantly improves the dismounting efficiency and the use feeling of the maintenance worker. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 A schematic view of the outside of the opening cover plate provided by the application;

[0025] Figure 2 A schematic view of the inside of the opening cover plate provided by the application;

[0026] Figure 3 A side view structural view of the opening cover plate provided by the application;

[0027] Figure 4 A structural schematic view of the movable plate of the opening cover plate provided by the application;

[0028] Figure 5 A structural schematic view of the cover plate body of the opening cover plate provided by the application;

[0029] Figure 6 A flowchart of the opening cover plate mounting method provided by the application.

[0030] In the drawings:

[0031] 1, cover plate body; 11, observation port; 12, mounting groove; 13, clamping piece; 131, connecting groove;

[0032] 2, movable plate; 21, locking part; 211, clamping groove; 22, operation part. DETAILED DESCRIPTION

[0033] The application will be further described in detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the application, but not to limit the application. In addition, it should be noted that, for the convenience of description, only the parts related to the application are shown in the drawings, but not all the structures.

[0034] In the description of the present application, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0035] In the present application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0036] In the description of the present embodiment, the terms "up", "down", "right", and other orientation or position relationships are based on the orientation or position relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0037] Embodiment one

[0038] As Figures 1 to 5 shown, the present embodiment provides an opening cover plate with visualization function, which improves the disassembly and assembly efficiency and installation precision on the maintenance structure, and improves the use feeling of maintenance personnel.

[0039] Referring to Figure 1 and Figure 2 , the opening cover plate comprises a cover plate body 1 and a movable plate 2, the cover plate body 1 can be clamped on the maintenance structure, and the cover plate body 1 is provided with an observation port 11; the movable plate 2 is movably arranged on the cover plate body 1, and the movable plate 2 has a use state of plugging the observation port 11 and an observation state of opening the observation port 11, in the use state, the movable plate 2 can be inserted with the maintenance structure, and in the observation state, the movable plate 2 can be separated from the maintenance structure.

[0040] The opening cover plate provided by the embodiment has the observation opening 11 opened in the observation state, so that the maintenance personnel can observe the connection state of the inside of the opening cover plate and the maintenance structure when connecting the cover plate body 1 and the maintenance structure through the observation opening 11, that is, the opening cover plate has a visual function, which not only helps to improve the convenience of connecting the cover plate body 1 and the maintenance structure, but also helps to improve the installation precision of the cover plate body 1 on the maintenance structure. When the cover plate body 1 is completely connected with the maintenance structure, the movable plate 2 is switched to the use state to block the observation opening 11, so that the cover plate body 1 and the movable plate 2 together can block the opening on the maintenance structure to ensure the sealing property and durability of the maintenance structure in daily use. In the use state, the movable plate 2 is inserted into the maintenance structure, and the movable plate 2 and the cover plate body 1 jointly act to enable the opening cover plate to be stably installed on the maintenance structure. When the cover plate body 1 needs to be separated from the maintenance structure, the movable plate 2 can be pulled out of the maintenance structure, which is convenient and fast, and significantly improves the disassembly and assembly efficiency and the use feeling of the maintenance personnel.

[0041] Specifically, referring to Figure 1 and Figure 2 , when the movable plate 2 is switched from the observation state to the use state, the area of the movable plate 2 for blocking the observation opening 11 gradually increases; when the movable plate 2 completely blocks the observation opening 11, the movable plate 2 is switched to the use state; when the movable plate 2 is switched from the use state to the observation state, the area of the movable plate 2 for blocking the observation opening 11 gradually decreases, and the observation opening 11 is gradually opened.

[0042] Exemplarily, the maintenance structure includes, but is not limited to, a cabin cover of a vehicle engine, a fuel tank cover of a vehicle, a charging port of a vehicle and a protective plate of a vehicle.

[0043] Optionally, referring to Figure 1 , the movable plate 2 is provided with a locking portion 21, and the locking portion 21 can be inserted into the maintenance structure and connected with the maintenance structure in the use state. The locking portion 21 helps to improve the stability and sealing property of the connection between the movable plate 2 and the maintenance structure in the use state, ensures that the opening cover plate can be stably installed on the maintenance structure, and the movable plate 2 can reliably block the observation opening 11.

[0044] In the embodiment, referring to Figure 3 and Figure 4 , one of the locking portion 21 and the maintenance structure is provided with a clamping block, and the other of the locking portion 21 and the maintenance structure is provided with a clamping groove 211, and the clamping block is arranged in the clamping groove 211 in the use state to improve the stability and sealing property of the connection between the movable plate 2 and the maintenance structure, and the clamping block is separated from the clamping groove 211 in the observation state, so that the movable plate 2 can be separated from the maintenance structure, and the observation opening 11 can be smoothly opened.

[0045] Specifically, referring to Figure 3The right side is the outer side of the maintenance structure, and the left side is the inner side of the maintenance structure. The locking portion 21 is preferably arranged on the side of the movable plate 2 facing the inner side of the maintenance structure, so that the side of the opening plate body facing the outer side of the maintenance structure can be kept flat in the use state, which not only helps to improve the appearance of the maintenance structure, but also effectively prevents the locking portion 21 from colliding with other structures during installation.

[0046] In this embodiment, a slot is arranged on the maintenance structure, a clamping block is arranged in the slot, and a clamping groove 211 is arranged on the locking portion 21. When the movable plate 2 is switched from the observation state to the use state, the locking portion 21 can gradually be inserted into the slot; when the clamping block is clamped into the clamping groove 211, the movable plate 2 is switched to the use state; the clamping block is pressed to make the clamping block disengage from the clamping groove 211, at this time, the movable plate 2 can be switched from the use state to the observation state.

[0047] Preferably, the clamping block is elastic, so that the clamping block can smoothly disengage from the clamping groove 211 by pressing.

[0048] In other embodiments, a slot is arranged on the maintenance structure, a clamping groove 211 is arranged on the slot wall, and a clamping block is arranged on the locking portion 21.

[0049] Exemplarily, the locking portion 21 is a lock tongue and is integrally formed with the movable plate 2. The thickness of the movable plate 2 is 2.5 mm, and the thickness of the locking portion 21 is 3.0 mm.

[0050] Optionally, referring to Figure 2 and Figure 5 , the cover plate body 1 is provided with a mounting slot 12, and the movable plate 2 is movably arranged in the mounting slot 12. In the observation state, the movable plate 2 is at least partially located in the mounting slot 12, and when the movable plate 2 is switched from the observation state to the use state, the movable plate 2 is moved out of the mounting slot 12. In the observation state, the mounting slot 12 can provide mounting space for the movable plate 2 and constrain the movement of the movable plate 2, so that the movable plate 2 can be stably kept in the observation state. When the movable plate 2 is gradually moved out of the mounting slot 12, the area of the movable plate 2 blocking the observation opening 11 gradually increases, so that the movable plate 2 can be switched from the observation state to the use state.

[0051] In this embodiment, referring to Figure 4 and Figure 5 , the movable plate 2 is a rectangular plate, and the mounting slot 12 extends along the circumference of the movable plate 2. In the use state, three sides of the movable plate 2 are located in the mounting slot 12. In this way, the mounting slot 12 can provide mounting space for the movable plate 2 while significantly reducing the manufacturing cost of the mounting slot 12, thereby improving the economy of the opening cover plate.

[0052] In other embodiments, the movable plate 2 is a rectangular plate, and the mounting groove 12 is a rectangular groove. In use, the movable plate 2 is located in the mounting groove 12 as a whole.

[0053] Referring to the orientation in Figure 3 , the right side is the outer side of the maintenance structure, and the left side is the inner side of the maintenance structure. The mounting groove 12 is preferably arranged on the side of the cover plate body 1 facing the inner side of the maintenance structure, so that the side of the opening plate body facing the outer side of the maintenance structure can remain flat. This not only helps to improve the aesthetics of the maintenance structure, but also effectively prevents the mounting groove 12 from colliding with the installation of other structures.

[0054] In an optional embodiment, referring to Figure 2 , the movable plate 2 is in sliding connection with the cover plate body 1. By driving the movable plate 2 to slide, the movable plate 2 can be switched between the use state and the observation state, improving the convenience of driving the movable plate 2 to switch states.

[0055] In this embodiment, referring to the orientation in Figure 2 and Figure 5 , the observation port 11 is arranged in the upper half of the cover plate body 1, and the lower half of the cover plate body 1 is provided with the mounting groove 12. The movable plate 2 is in sliding cooperation with the groove wall of the mounting groove 12 in the vertical direction. When the movable plate 2 is separated from the maintenance structure, the movable plate 2 can automatically slide down into the mounting groove 12 under the action of its own gravity, without the need for manual operation by maintenance personnel, further improving the convenience of state switching of the movable plate 2. Among them, the mounting groove 12 not only provides mounting space for the movable plate 2, but also provides sliding space for the movable plate 2, which helps to further reduce the manufacturing cost of the opening cover plate and improve the economy of the opening cover plate.

[0056] In other embodiments, the observation port 11 and the mounting groove 12 are arranged in a horizontal direction. The movable plate 2 is in sliding cooperation with the groove wall of the mounting groove 12 in the horizontal direction.

[0057] In another optional embodiment, the movable plate 2 is in rotational connection with the cover plate body 1. By driving the movable plate 2 to rotate, the movable plate 2 can be switched between the use state and the observation state, improving the convenience of driving the movable plate 2 to switch states.

[0058] Specifically, the opening cover plate further comprises a connecting shaft, the cover plate body 1 is provided with a first rotating hole, the movable plate 2 is provided with a second rotating hole, the connecting shaft is arranged in the first rotating hole and the second rotating hole, and is in rotational cooperation with the hole wall of the second rotating hole. When the movable plate 2 is driven to rotate, the movable plate 2 rotates relative to the connecting shaft and the cover plate body 1.

[0059] In the embodiment, the cross-sectional shape of the observation opening 11 and the movable plate 2 is a sector, and the movable plate 2 is rotatably connected to the cover plate body 1 at the center of the sector. When the movable plate 2 rotates relative to the cover plate body 1 by different angles, the area of the movable plate 2 blocking the observation opening 11 is different.

[0060] In other embodiments, the cross-sectional shape of the observation opening 11 and the movable plate 2 is a rectangle, and the movable plate 2 is rotatably connected to the cover plate body 1 at one side or one corner of the rectangle.

[0061] Optionally, referring to Figure 5 The opening cover further comprises a clamping piece 13, which is arranged on the cover plate body 1 and clamps the maintenance structure through the clamping piece 13. The clamping of the cover plate body 1 and the maintenance structure not only helps to improve the efficiency of the assembly between the cover plate body 1 and the maintenance structure, saves time and labor, but also enables the cover plate body 1 and the maintenance structure to be repeatedly connected and separated, and ensures the reliability of the connection between the cover plate body 1 and the maintenance structure.

[0062] Specifically, referring to Figure 5 A connecting groove 131 is formed between the clamping piece 13 and the cover plate body 1, and part of the maintenance structure can be clamped into the connecting groove 131 to realize the clamping of the cover plate body 1 and the maintenance structure.

[0063] Exemplarily, the clamping piece 13 is a clamping claw.

[0064] In the embodiment, the clamping piece 13 is arranged on the side of the cover plate body 1 facing the inner side of the maintenance structure, so that the side of the opening plate body facing the outer side of the maintenance structure can remain flat, which not only helps to improve the appearance of the maintenance structure, but also effectively prevents the installation of the clamping piece 13 from conflicting with other structures.

[0065] In the embodiment, referring to Figure 5 The clamping piece 13 is provided in plurality, and the plurality of clamping pieces 13 are arranged along the circumference of the cover plate body 1, so that the four sides of the cover plate body 1 can be connected with the maintenance structure, improving the reliability of the installation of the cover plate body 1 on the maintenance structure.

[0066] Specifically, referring to Figure 2 and Figure 5 The observation opening 11 is arranged on the upper half of the cover plate body 1, and the movable plate 2 is slidably connected with the cover plate body 1 in the vertical direction. The clamping piece 13 is provided in two, and the two clamping pieces 13 are arranged at the lower end of the cover plate body 1. The locking portion 21 is arranged at the upper end of the movable plate 2. When the locking portion 21 is clamped with the maintenance structure, the upper and lower ends of the opening cover are connected with the maintenance structure, ensuring the reliability of the installation of the opening cover on the maintenance structure.

[0067] Optionally, referring to Figure 4The opening cover plate further comprises an operation part 22 arranged on the movable plate 2. In this way, the maintenance personnel can drive the movable plate 2 to move through the operation part 22, and the convenience of operation and the use feeling of the maintenance personnel are improved.

[0068] For example, referring to Figure 2 The operation part 22 is a handle arranged on one side of the movable plate 2 facing the outside of the maintenance structure.

[0069] In this embodiment, the operation part 22 is integrally cast with the movable plate 2 during the production of the movable plate 2.

[0070] Optionally, the opening cover plate further comprises a sealing part arranged on the cover plate body 1, and the cover plate body 1 is sealingly connected with the maintenance structure through the sealing part, so as to ensure the sealing property of the connection between the cover plate body 1 and the maintenance structure, and improve the durability of the maintenance structure in use.

[0071] Specifically, the sealing part extends along the circumference of the cover plate body 1, which is helpful to further improve the sealing property of the connection between the cover plate body 1 and the maintenance structure.

[0072] For example, the sealing part is made of rubber.

[0073] Embodiment two

[0074] The opening cover plate provided in the embodiment one is arranged on the maintenance structure, and is used for sealing the opening of the maintenance structure.

[0075] In this embodiment, the maintenance structure is a vehicle protection plate, the insertion slot is arranged on the protection plate body, and the maintenance opening on the protection plate body is the opening of the maintenance structure.

[0076] In this embodiment, the vehicle protection plate is a side protection surface of a trunk area of a vehicle. The side protection surface is a key interior part of the trunk area of the vehicle, and has both functionality and decoration. The side protection surface covers the trunk side wall metal plate, prevents scratches and damages to the vehicle body during loading and unloading of luggage, and avoids deformation through a reasonable support structure (such as a wheel cover metal plate backing). In some vehicle models, the side protection surface can also have the function of reducing noise through material compounding and structure design.

[0077] In this embodiment, the opening cover plate is detachably connected with the protection plate body in a plug-in and clamping manner.

[0078] Specifically, the clamping piece 13 of the opening cover plate is clamped with the guard body, and the locking part 21 of the opening cover plate is inserted with the guard body. When the opening cover plate needs to be detached from the guard body, the locking part 21 is first pulled out of the guard body, and then the clamping piece 13 is separated from the guard body, which is convenient and fast to operate; when the opening cover plate needs to be installed on the guard body, the guard body is first clamped into the connecting groove 131, and then the locking part 21 is inserted with the guard body.

[0079] Embodiment three

[0080] Referring to Figure 6 The embodiment provides an opening cover plate installation method, which is suitable for the opening cover plate of the embodiment one and comprises the following steps.

[0081] S1, switching the movable plate 2 to an observation state to open the observation port 11.

[0082] In the embodiment, the movable plate 2 is connected with the cover body 1 in an up-down sliding mode, and the observation port 11 is arranged on the upper half of the cover body 1. Specifically, in step S1, the maintenance personnel pull down the movable plate 2 by holding the operation part 22, and the movable plate 2 slides into the installation groove 12. In this process, the area of the observation port 11 gradually increases until the sliding plate contacts the bottom wall of the installation groove 12. At this time, the observation port 11 is completely opened, and the movable plate 2 is switched to the observation state.

[0083] S2, clamping the cover body 1 to the maintenance structure.

[0084] Specifically, the maintenance structure is provided with an opening, the cover body 1 is in contact with the opening wall of the opening, and the opening wall is clamped into the connecting groove 131 between the clamping piece 13 and the cover body 1. At this time, the opening is partially blocked by the opening cover plate, and only the position corresponding to the observation port 11 is not blocked.

[0085] S3, driving the movable plate 2 to move until the movable plate 2 is inserted with the maintenance structure, and the movable plate 2 is switched to a use state to block the observation port 11. At this time, the opening on the maintenance structure is completely blocked.

[0086] Specifically, the maintenance personnel pull up the movable plate 2 by holding the operation part 22, the movable plate 2 gradually separates from the installation groove 12, and the locking part 21 moves upward and gradually enters the insertion slot of the maintenance structure; after the clamping block in the insertion slot is clamped into the clamping groove 211 on the locking part 21, the movable plate 2 stops moving, and the observation port 11 is completely blocked by the movable plate 2.

[0087] In the embodiment, the maintenance structure adopts a vehicle guard, and the opening on the maintenance structure is a maintenance opening on the guard body.

[0088] Obviously, the above embodiments of the present application are merely exemplary but not intended to limit the embodiments of the present application. Various obvious changes, re-adjustments and substitutions can be made by those skilled in the art without departing from the scope of the present application. It is not necessary or possible to enumerate all the embodiments. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. An opening cover characterized by, include: The cover plate body (1) can be locked onto the maintenance structure, and the cover plate body (1) is provided with an observation port (11). The movable plate (2) is movably disposed on the cover body (1). The movable plate (2) has a use state of blocking the observation port (11) and an observation state of opening the observation port (11). In the use state, the movable plate (2) can be inserted into the maintenance structure. In the observation state, the movable plate (2) can be separated from the maintenance structure.

2. The open cover panel according to claim 1, wherein The movable plate (2) is provided with a locking part (21). In the use state, the locking part (21) can be inserted into the maintenance structure and engage with the maintenance structure.

3. The open cover panel according to claim 2, wherein A locking block is provided on one of the locking part (21) and the maintenance structure, and a slot (211) is provided on the other of the locking part (21) and the maintenance structure. In the use state, the locking block is locked in the slot (211), and in the observation state, the locking block is disengaged from the slot (211).

4. The open cover panel according to claim 1, wherein The cover plate body (1) is provided with an installation groove (12), and the movable plate (2) is movably disposed in the installation groove (12). In the observation state, the movable plate (2) is at least partially located in the installation groove (12). When the movable plate (2) switches from the observation state to the use state, the movable plate (2) moves out of the installation groove (12).

5. The open cover panel of claim 1, wherein, The movable plate (2) is slidably connected to the cover plate body (1).

6. The open cover panel of claim 1, wherein, The movable plate (2) is rotatably connected to the cover plate body (1).

7. The open cover panel according to any one of claims 1 to 6, characterized in that The opening cover also includes a snap-fit ​​member (13), which is disposed on the cover body (1) and the cover body (1) is snapped to the maintenance structure through the snap-fit ​​member (13).

8. The open cover panel according to any one of claims 1-6, characterized in that The opening cover also includes an operating part (22), which is disposed on the movable plate (2).

9. A fender for a vehicle, characterized by The device includes a protective plate body and an opening cover as described in any one of claims 1-8, wherein the protective plate body is provided with a maintenance port, and the opening cover is detachably installed on the protective plate body for sealing the maintenance port.

10. A method of installing an access cover, characterised by, An opening cover plate applicable to any one of claims 1-8 includes the following steps: S1. Switch the movable plate (2) to the observation state; S2. Secure the cover plate body (1) to the maintenance structure; S3. Drive the movable plate (2) to move until the movable plate (2) is inserted into the maintenance structure, and the movable plate (2) switches to the use state.

Images