Small refueling or charging door and vehicle

Abstract

The embodiment of the utility model provides a refueling or charging small door and a vehicle, and the refueling or charging small door comprises a small door cover plate, a sealing structure and a limiting block; the sealing structure comprises a connecting plate and a sealing ring, the connecting plate is arranged on one side, in the first direction, of the small door cover plate, and the sealing ring wraps the peripheral side of the connecting plate; the limiting block is arranged between the sealing ring and the small door cover plate, and on a projection plane perpendicular to the first direction, the projection of the limiting block is located in the projection area of the sealing ring. According to the refueling or charging small door, the limiting block can be hidden while Y-direction limiting of the limiting block is achieved, and therefore the appearance quality of the door assembly after the refueling or charging small door is opened can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to a refueling or charging door and a vehicle. BACKGROUND

[0002] In the related art, a door assembly for refueling or charging of a vehicle generally has a limiting structure arranged on a small door pipe of the door assembly. When the refueling or charging door is closed, the limiting structure can limit the refueling or charging door in the Y direction (the front-rear direction of the vehicle is the X direction, the left-right direction is the Y direction, and the up-down direction is the Z direction) by abutting against the refueling or charging door.

[0003] However, when the refueling or charging door is opened, the limiting structure is exposed, which seriously affects the appearance of the door assembly, thereby resulting in poor appearance quality of the door assembly. CONTENT OF THE UTILITY MODEL

[0004] Therefore, an embodiment of the present application aims to provide a refueling or charging door and a vehicle capable of improving the appearance quality of a door assembly for refueling or charging.

[0005] To achieve the above-mentioned purpose, an embodiment of the present application provides a refueling or charging door, comprising:

[0006] a door cover plate;

[0007] a sealing structure, the sealing structure comprising a connecting plate and a sealing ring, the connecting plate being arranged on one side of the door cover plate in a first direction, and the sealing ring being wrapped around the outer circumferential side of the connecting plate;

[0008] a limiting block, the limiting block being arranged between the sealing ring and the door cover plate, and the projection of the limiting block being located within the projection area of the sealing ring in a projection plane perpendicular to the first direction.

[0009] In an embodiment, the limiting block is arranged on the sealing ring.

[0010] In an embodiment, the sealing ring comprises a connecting portion and a sealing portion, the connecting portion being wrapped around the outer circumferential side of the connecting plate, and the sealing portion being connected with the connecting portion; the limiting block is arranged on the sealing portion and located between the sealing portion and the door cover plate, and the limiting block abuts against the door cover plate at least when the refueling or charging door is in a closed state.

[0011] In an embodiment, the sealing portion is curved away from the door cover plate.

[0012] In an embodiment, the sealing part comprises a first section and a second section, the first section is located between the connecting part and the second section, and an included angle is formed between the first section and the second section, the included angle is located on a side of the sealing part away from the door cover plate in the first direction, and the limiting block is arranged on the second section.

[0013] In an embodiment, the Shore A hardness of the sealing ring is greater than or equal to 50 HA.

[0014] In an embodiment, the limiting block comprises a side wall body, and the side wall body surrounds a hollow space.

[0015] In an embodiment, the wall thickness of the side wall body is 0.5 mm-1.5 mm; and / or,

[0016] The limiting block further comprises a reinforcing rib arranged in the hollow space, and the reinforcing rib is connected with the side wall body.

[0017] In an embodiment, the refueling or charging door comprises a hinge connected with the connecting plate, the hinge is located on a side of the connecting plate in a second direction, and the limiting blocks are arranged on opposite sides of the connecting plate in a third direction, wherein the first direction, the second direction and the third direction are perpendicular to each other.

[0018] In an embodiment, the connecting plate has a first region and a second region, the second region is located on a side of the first region away from the hinge in the second direction, and the limiting blocks are arranged on opposite sides of the second region in the third direction.

[0019] Another embodiment of the present application provides a vehicle comprising a door assembly, the door assembly comprises a door opening pipe with a through hole and the refueling or charging door described above, the refueling or charging door is arranged at the door opening pipe in an openable and closable manner, the connecting plate and the sealing ring are located on a side of the door cover plate close to the through hole, and when the refueling or charging door is in a closed state, the sealing ring is in sealing contact with a part of the door opening pipe located on a side of the through hole.

[0020] The embodiment of the present application provides a refueling or charging door and a vehicle, the refueling or charging door comprises a door cover plate, a sealing structure and a limiting block, the sealing structure comprises a connecting plate and a sealing ring, the connecting plate is arranged on one side of the door cover plate in a first direction, and the sealing ring is wrapped on the outer circumferential side of the connecting plate. Since the limiting block is arranged between the sealing ring and the door cover plate, when the refueling or charging door is closed, the limiting block can limit the door cover plate in the Y direction of the vehicle, and since the projection of the limiting block is located in the projection area of the sealing ring in the projection plane perpendicular to the first direction, the limiting block can be shielded by the sealing ring in this way, so that when the refueling or charging door is opened, the user can hardly see the limiting block. That is to say, the limiting block of the embodiment of the present application not only limits in the Y direction, but also is better hidden between the sealing ring and the door cover plate, and when the refueling or charging door is opened, the limiting block is not exposed to affect the appearance of the door assembly, therefore, the refueling or charging door adopting the embodiment of the present application can improve the appearance quality of the door assembly after the refueling or charging door is opened, and then the perception quality of the user can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 FIG. 1 is a structural schematic diagram of a door assembly according to an embodiment of the present application, and the refueling or charging door in the figure is in an open state;

[0022] Figure 2 FIG. 2 is a sectional view of part of the door assembly shown in FIG. 1; Figure 1

[0023] Figure 3 FIG. 3 is a structural schematic diagram of a door assembly according to an embodiment of the present application, and the refueling or charging door in the figure is in a closed state, in order to show the limiting block, the door cover plate and other irrelevant structures are omitted in the figure; Figure 1

[0024] Figure 4 FIG. 4 is a structural schematic diagram of a limiting block according to an embodiment of the present application;

[0025] Figure 5 FIG. 5 is a structural schematic diagram of another limiting block according to an embodiment of the present application.

[0026] BRIEF DESCRIPTION OF DRAWINGS

[0027] 10, refueling or charging door; 11, door cover plate; 12, sealing structure; 121, connecting plate; 122, sealing ring; 1221, connecting part; 1222, sealing part; 1222a, included angle; 12221, first section; 12222, second section; 13, limiting block; 13a, hollow space; 13b, opening; 131, side wall body; 132, reinforcing rib; 14, hinge; 20, door opening pipe; 20a, through hole. DETAILED DESCRIPTION​​

[0028] In the description of the embodiments of the present application, it should be noted that the term "first direction" is based on the orientation or positional relationship shown in the drawings, and the terms "second direction" and "third direction" are based on the orientation or positional relationship shown in the drawings. These orientation terms are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the devices or elements 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 embodiments of the present application. Figure 2 Figure 3 In the description of the embodiments of the present application, it should be noted that the term "first direction" is based on the orientation or positional relationship shown in the drawings, and the terms "second direction" and "third direction" are based on the orientation or positional relationship shown in the drawings. These orientation terms are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the devices or elements 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 embodiments of the present application.

[0029] The vehicle according to the embodiments of the present application comprises a door assembly.

[0030] The vehicle according to the embodiments of the present application includes but is not limited to a fuel car and a new energy car. The fuel car refers to a car using conventional vehicle fuel such as gasoline and diesel. The new energy car includes a car using unconventional vehicle fuel and a car using conventional vehicle fuel but adopting a new type of vehicle-mounted power device. The new energy car includes but is not limited to a pure electric car, a range-extender electric car, a hybrid electric car, a fuel cell electric car, a hydrogen engine car, etc.

[0031] For a vehicle with a fuel tank, the door assembly is used to protect the inlet of the fuel tank. For a vehicle with a charging port, the door assembly is used to protect the charging port.

[0032] Referring to Figure 1 , the door assembly comprises a refueling or charging door 10 and a door opening pipe 20.

[0033] Referring to Figures 1 to 5 , the refueling or charging door 10 according to the embodiments of the present application comprises a door cover plate 11, a sealing structure 12 and a limiting block 13.

[0034] The sealing structure 12 comprises a connecting plate 121 and a sealing ring 122. The connecting plate 121 is arranged on one side of the door cover plate 11 along the first direction, and the sealing ring 122 is wrapped on the outer circumferential side of the connecting plate 121. The limiting block 13 is arranged between the sealing ring 122 and the door cover plate 11. In the projection plane perpendicular to the first direction, the projection of the limiting block 13 is located within the projection area of the sealing ring 122.

[0035] Referring to Figure 1 , the refueling or charging door 10 is generally also provided with a hinge 14, and the hinge 14 is connected with the connecting plate 121.

[0036] Referring to Figure 1 , the door opening pipe 20 has a through opening 20a. For the door assembly cooperating with the fuel tank, the through opening 20a communicates with the inlet of the fuel tank. For the door assembly cooperating with the charging port, the through opening 20a is used to avoid the charging port.​

[0037] The oiling or charging door 10 is arranged at the door opening pipe 20 in an openable and closable manner, and the connecting plate 121 and the sealing ring 122 are arranged at the side of the door cover plate 11 close to the through opening 20a.

[0038] The oiling or charging door 10 is rotatably connected to the door opening pipe 20 through the hinge 14, and the oiling or charging door 10 is opened or closed by rotating.

[0039] When the oiling or charging door 10 is in the closed state, the sealing ring 122 is in sealing contact with the part of the door opening pipe 20 located at the side of the through opening 20a, thereby sealing the through opening 20a.

[0040] The sealing ring 122 can be made of an elastic material such as rubber, for example, the material of the sealing ring 122 can be Ethylene Propylene Diene Monomer (EPDM), Thermoplastic Vulcanizate (TPV), Silicone Rubber (SIL), Nitrile Butadiene Rubber (NBR), Fluorocarbon Rubber (FKM), Advanced Composites Materia (ACM), Chloroprene Rubber (CR), etc.

[0041] Please continue to refer to Figure 2 and Figure 3 , the limiting block 13 is arranged between the sealing ring 122 and the door cover plate 11, so as to limit the door cover plate 11 in the Y direction of the vehicle (the front-rear direction of the vehicle is the X direction, the left-right direction is the Y direction, and the up-down direction is the Z direction, Figure 2 the first direction in the above is parallel to the Y direction).

[0042] The number of the limiting block 13 can be one or more.

[0043] Please refer to Figure 2 and Figure 3 , the limiting block 13 can be arranged on the sealing ring 122, and when the oiling or charging door 10 is in the closed state, the limiting block 13 can limit by abutting against the door cover plate 11.

[0044] In order to facilitate processing and manufacturing, the limiting block 13 and the sealing ring 122 can adopt an integral molding structure, for example, the limiting block 13 and the sealing ring 122 can be integrally injection molded, and in other embodiments, the limiting block 13 can also be connected with the sealing ring 122 by bonding or the like.

[0045] In some other embodiments, the limiting block 13 can also be arranged on the small door cover plate 11, and when the refueling or charging small door 10 is in the closed state, the limiting block 13 can abut against the sealing ring 122 to achieve limiting.

[0046] In some other embodiments, the limiting block 13 can be connected with the small door cover plate 11 and the sealing ring 122 respectively.

[0047] The hardness of the sealing ring 122 can be set according to the design needs of the design, but if the hardness of the sealing ring 122 is relatively low, when the refueling or charging small door 10 is in the closed state, the sealing ring 122 cannot provide sufficient supporting force to the limiting block 13, so that the limiting block 13 can be difficult to provide sufficient abutting force between the small door cover plate 11 and the sealing ring 122, thereby possibly affecting the Y-direction limiting effect of the limiting block 13 (and even causing the small door cover plate 11 to be recessed towards the inside of the vehicle and affecting the aesthetic appearance of the vehicle), therefore, in order to avoid affecting the Y-direction limiting effect of the limiting block 13, the hardness of the sealing ring 122 should not be too low, and preferably, the Shore A hardness of the sealing ring 122 can be greater than or equal to 50HA.

[0048] In the projection plane perpendicular to the first direction, the projection of the limiting block 13 is located in the projection area of the sealing ring 122, that is, the limiting block 13 is hidden between the sealing ring 122 and the small door cover plate 11, and the sealing ring 122 can shield the limiting block 13, please refer to Figure 1 When the refueling or charging small door 10 is opened, the user can only see the sealing ring 122 from the side of the sealing ring 122 away from the limiting block 13, and almost cannot see the limiting block 13.

[0049] In the related art, the limiting structure is generally arranged on the small door opening pipe, and when the refueling or charging small door is opened, the limiting structure on the small door opening pipe is directly exposed outside, that is, the user can directly see the limiting structure, therefore, this kind of arrangement mode can seriously affect the aesthetic appearance of the door assembly after the refueling or charging small door is opened, thereby causing the user's perception quality of the door assembly to be reduced.

[0050] The embodiment of the present application sets a limiting block 13 on the refueling or charging door 10. Since the limiting block 13 is arranged between the sealing ring 122 and the door cover plate 11, when the refueling or charging door 10 is closed, the limiting block 13 can limit the door cover plate 11 in the Y direction of the vehicle. Since the connecting plate 121 of the sealing structure 12 is arranged on one side of the door cover plate 11 in the first direction, the sealing ring 122 of the sealing structure 12 is wrapped around the outer circumferential side of the connecting plate 121, and in the projection plane perpendicular to the first direction, the projection of the limiting block 13 is located within the projection area of the sealing ring 122. Therefore, this arrangement can also rely on the sealing ring 122 to shield the limiting block 13, so that after the refueling or charging door 10 is opened, the user can hardly see the limiting block 13. That is, the limiting block 13 of the embodiment of the present application not only limits in the Y direction, but also is better hidden between the sealing ring 122 and the door cover plate 11. When the refueling or charging door 10 is opened, the limiting block 13 will not be exposed to affect the appearance of the door assembly. Therefore, the refueling or charging door 10 adopting the embodiment of the present application can improve the appearance quality of the door assembly after the refueling or charging door 10 is opened, thereby improving the perception quality of the user.

[0051] In some embodiments, referring to Figure 2 The sealing ring 122 includes a connecting portion 1221 and a sealing portion 1222. The connecting portion 1221 is wrapped around the outer circumferential side of the connecting plate 121, and the sealing portion 1222 is connected with the connecting portion 1221. For the limiting block 13 arranged on the sealing ring 122, the limiting block 13 can be arranged on the sealing portion 1222 and located between the sealing portion 1222 and the door cover plate 11. The limiting block 13 at least abuts against the door cover plate 11 when the refueling or charging door 10 is in a closed state.

[0052] The sealing portion 1222 is used for sealing contact with the part of the door opening pipe 20 located around the through hole 20a. The limiting block 13 is arranged on the sealing portion 1222, which means that the limiting block 13 is shielded by the sealing portion 1222.

[0053] The sealing portion 1222 has a certain elastic deformation capacity. When the refueling or charging door 10 is closed, the sealing portion 1222 deforms by contacting the part of the door opening pipe 20 located around the through hole 20a, thereby achieving sealing contact.

[0054] When the refueling or charging door 10 is in an open state, the limiting block 13 can abut against the door cover plate 11 or form a gap with the door cover plate 11. After the refueling or charging door 10 is closed, the limiting block 13 abuts against the door cover plate 11, so that the limiting block 13 not only has a Y direction limiting effect, but also can better support the door cover plate 11.

[0055] And since the sealing portion 1222 has a certain elastic deformation capacity, the limiting block 13 is arranged on the sealing portion 1222, so that the limiting block 13 can be reliably abutted against the small door cover plate 11 by the deformation of the sealing portion 1222.

[0056] In order to make the sealing portion 1222 have better deformation capacity, please refer to Figure 2 , the sealing portion 1222 can be bent away from the small door cover plate 11, that is, the curvature center of the bending of the sealing portion 1222 is located on the side of the sealing portion 1222 away from the small door cover plate 11, and the sealing portion 1222 forms an included angle 1222a by bending, and the included angle 1222a is located on the side of the sealing portion 1222 away from the small door cover plate 11 along the first direction. After the refueling or charging small door 10 is closed, the sealing portion 1222 deforms elastically, so that the included angle 1222a can be increased to a certain extent.

[0057] Please continue to refer to Figure 2 , the sealing portion 1222 includes a first segment 12221 and a second segment 12222, the first segment 12221 is located between the connecting portion 1221 and the second segment 12222, and an included angle 1222a is formed between the first segment 12221 and the second segment 12222. Preferably, the limiting block 13 can be arranged on the second segment 12222.

[0058] Specifically, after the refueling or charging small door 10 is closed, the second segment 12222 is in sealing contact with the part of the small door opening pipe 20 located on the periphery of the through hole 20a, and in the process of increasing the included angle 1222a, the second segment 12222 is actually deflected towards the small door cover plate 11. Therefore, the limiting block 13 arranged on the second segment 12222 can be abutted against the small door cover plate 11 more closely by the deflection of the second segment 12222, so as to further improve the Y-direction limiting and supporting effect of the limiting block 13.

[0059] It should be noted that the limiting block 13 is not limited to being arranged on the second segment 12222, and in other embodiments, the limiting block 13 can also be arranged on the first segment 12221, or the limiting block 13 can also be arranged at the junction of the first segment 12221 and the second segment 12222.

[0060] In some embodiments, please refer to Figure 4 , the limiting block 13 can include a side wall body 131, and the side wall body 131 surrounds a hollow space 13a.

[0061] Figure 4The side wall body 131 shown has two ends separated from each other, and an opening 13b is formed between the two ends, that is, the hollow space 13a is not a structure enclosed on all sides. In other embodiments, the side wall body 131 can also not have two ends separated from each other, that is, the side wall body 131 can also be a closed ring, so that the side wall body 131 encloses the hollow space 13a to form a structure enclosed on all sides.

[0062] The limiting block 13 adopts the structure of the hollow space 13a enclosed by the side wall body 131, which can ensure that the limiting block 13 has a certain structural rigidity while reducing the material of the limiting block 13, thereby saving the production cost of the refueling or charging small door 10.

[0063] The wall thickness of the side wall body 131 can be adjusted according to design needs, but if the wall thickness of the side wall body 131 is thin, the structural rigidity of the limiting block 13 is relatively poor, and when the refueling or charging small door 10 is in a closed state, the limiting block 13 is difficult to provide sufficient abutting force between the small door cover plate 11 and the sealing ring 122, thereby possibly affecting the Y-direction limiting effect of the limiting block 13. If the wall thickness of the side wall body 131 is thick, the limiting block 13 uses more material and is heavier, and especially when the limiting block 13 is arranged at the sealing part 1222 of the sealing ring 122, the sealing part 1222 of the sealing ring 122 can be deformed by being extruded by the excessively heavy limiting block 13 after the refueling or charging small door 10 is opened, thereby affecting the appearance quality of the sealing ring 122. Therefore, in order to ensure that the limiting block 13 has a relatively appropriate structural rigidity and is not too heavy, preferably, the wall thickness of the side wall body 131 can be 0.5mm-1.5mm(inclusive), such as 0.5mm, 1mm, 1.5mm, etc.

[0064] In addition, in order to improve the structural strength of the limiting block 13, in some embodiments, referring to Figure 5 , the limiting block 13 can also include a reinforcing rib 132, which is arranged in the hollow space 13a and connected with the side wall body 131.

[0065] In some embodiments, referring to Figure 3 , the hinge 14 is located on one side of the connecting plate 121 along the second direction, and the opposite sides of the connecting plate 121 along the third direction can be respectively provided with limiting blocks 13, wherein the first direction, the second direction and the third direction are perpendicular to each other.

[0066] That is, the number of limiting blocks 13 is at least two, and part of the limiting blocks 13 are arranged on one side of the connecting plate 121 along the third direction, and the other part of the limiting blocks 13 are arranged on the other side of the connecting plate 121 along the third direction.

[0067] In this way, the door cover plate 11 can be limited in the Y direction on both sides of the connecting plate 121, thereby improving the reliability and stability of the limiting block 13.

[0068] Further, referring to Figure 3 , the connecting plate 121 has a first region Z1 (i.e. the region within the dashed box indicated by Z1) and a second region Z2 (i.e. the region within the dashed box indicated by Z2), and the second region Z2 is located on the side of the first region Z1 away from the hinge 14 in the second direction. Preferably, the limiting block 13 can be arranged on both sides of the second region Z2 in the third direction.

[0069] Specifically, the door assembly is generally provided with a locking structure and a press switch. When the refueling or charging door 10 is in a closed state, the locking structure locks the refueling or charging door 10, and by applying a pressing force to the press switch, an unlocking signal can be triggered to unlock the locking structure.

[0070] The press switch is generally located on the side of the connecting plate 121 opposite the hinge 14 in the second direction Figure 3 , a third region Z3 is shown in the third region Z3, i.e. the region within the dashed box indicated by Z3, and the third region Z3 is the arrangement region of the press switch. The first region Z1 is actually a region relatively far from the press switch, and the second region Z2 is a region relatively close to the press switch. If the limiting block 13 is arranged in a region relatively far from the press switch, such as being arranged on both sides of the first region Z1 in the third direction, it may cause the press switch to trigger the unlocking signal under the action of a relatively small pressing force, thereby easily causing the unlocking signal to be triggered by mistake. If the limiting block 13 is arranged in a region relatively close to the press switch, such as being arranged on both sides of the second region Z2 in the third direction, the press switch needs to be under the action of a relatively large pressing force to trigger the unlocking signal. Therefore, by arranging the limiting block 13 on both sides of the second region Z2 in the third direction, the user's perception of the pressing force applied to the press switch can be improved, and the risk of the unlocking signal being triggered by mistake can be reduced.

[0071] It should be noted that arranging the limiting block 13 on both sides of the second region Z2 of the connecting plate 121 in the third direction is only one possible implementation, and in other embodiments, the arrangement position of the limiting block 13 can be adjusted according to actual conditions, which is not limited herein.

[0072] In the description of the application, the description of the terms "in some embodiments", "in some embodiments", "in other embodiments", "in yet other embodiments", or "exemplary" and the like means that the particular feature, structure, material, or characteristic being described is included in at least one embodiment or example of the application. The illustrative appearances of the above-mentioned terms in various places in the specification are not necessarily referring to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples. Moreover, the terminology used has sp ecial meanings from commonly- used dictionaries that are incorporated herein by reference.

[0073] The above description is merely illustrative of the application, and is not intended to limit the application. The application can be modified and varied greatly without departing from the spirit or scope of the application, as set forth in the following claims.

Claims

1. A small door for refueling or charging, characterized in that, include: Small door cover; A sealing structure, comprising a connecting plate and a sealing ring, wherein the connecting plate is disposed on one side of the small door cover plate along a first direction, and the sealing ring covers the outer periphery of the connecting plate; A limiting block is disposed between the sealing ring and the small door cover plate. On a projection plane perpendicular to the first direction, the projection of the limiting block is located within the projection area of ​​the sealing ring.

2. The refueling or charging door according to claim 1, characterized in that, The limiting block is disposed on the sealing ring.

3. The refueling or charging door according to claim 2, characterized in that, The sealing ring includes a connecting part and a sealing part. The connecting part covers the outer periphery of the connecting plate, and the sealing part is connected to the connecting part. The limiting block is disposed on the sealing part and located between the sealing part and the small door cover plate. The limiting block abuts against the small door cover plate at least when the refueling or charging small door is in the closed state.

4. The refueling or charging door according to claim 3, characterized in that, The sealing part bends away from the small door cover.

5. The refueling or charging door according to claim 4, characterized in that, The sealing part includes a first section and a second section. The first section is located between the connecting part and the second section, and the first section and the second section form an angle. The angle is located on the side of the sealing part away from the small door cover plate along the first direction. The limiting block is disposed in the second section.

6. The refueling or charging door according to any one of claims 1-5, characterized in that, The sealing ring has a Shore A hardness greater than or equal to 50HA.

7. The refueling or charging door according to any one of claims 1-5, characterized in that, The limiting block includes a side wall, which encloses a hollow space.

8. The refueling or charging door according to claim 7, characterized in that, The wall thickness of the sidewall is 0.5mm-1.5mm; and / or, The limiting block also includes a reinforcing rib disposed in the hollow space, and the reinforcing rib is connected to the side wall.

9. The refueling or charging door according to any one of claims 1-5, characterized in that, The refueling or charging door includes a hinge connected to the connecting plate. The hinge is located on one side of the connecting plate along the second direction. The limiting blocks are respectively provided on opposite sides of the connecting plate along the third direction, wherein the first direction, the second direction, and the third direction are perpendicular to each other.

10. The refueling or charging door according to claim 9, characterized in that, The connecting plate has a first region and a second region, the second region being located on the side of the first region away from the hinge along the second direction, and the limiting blocks being disposed on opposite sides of the second region along the third direction.

11. A vehicle, characterized in that, The device includes a door assembly comprising a small door tube with a through opening and a refueling or charging door as described in any one of claims 1-10. The refueling or charging door is closably disposed at the small door tube, and the connecting plate and the sealing ring are located on the side of the door cover plate near the through opening. When the refueling or charging door is in a closed state, the sealing ring is in sealing contact with the portion of the small door tube located around the through opening.

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