A filler cap and vehicle

Abstract

The utility model discloses a kind of filling port cover and vehicle, it is related to vehicle energy filling technology field, the filling port cover includes: port cover body, inner insert and clamping portion, the port cover body, the inner insert and the clamping portion integrally injection molding, and the inner insert is located inside the port cover body, the port cover body includes first face and second face, the inner insert is close to the second face, the second face is equipped with clamping portion on the side of the first face, the clamping portion is suitable for with the filling port hinge arm of vehicle body connection.The utility model embodiment's filling port cover injection has inner insert, the clamping portion of port cover body is separated with the first face of port cover body, first face is appearance, that is, the appearance between the clamping portion of port cover body is separated, after installation, clamping portion is stressed in inner insert, using the rigid deformation of inner insert, solve appearance pit problem.

Description

Technical Field

[0001] This utility model relates to the field of vehicle energy refueling technology, and in particular to a refueling cap and a vehicle. Background Technology

[0002] Currently, energy refueling caps are basically divided into two types: sheet metal stamping parts and plastic injection molding parts. With the increasing emphasis on appearance and refinement, the mainstream in the market is now mostly plastic parts. These caps are fixed to the energy refueling port hinge arm by injection molding features such as snap-fit ​​parts and limiting ribs on the inner side of the outer panel. During the injection molding process, due to the difference in cooling time and speed at the root of the snap-fit ​​parts and limiting ribs, shrinkage marks are formed in the area where the snap-fit ​​parts are located. Furthermore, when the snap-fit ​​parts are subjected to the tensile force of the refueling port hinge arm, local stress concentration causes tensile pits to appear on the refueling cap, resulting in surface defects. Utility Model Content

[0003] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, this utility model proposes a filling cap, wherein the filling cap has an insert molded inside, which separates the snap-fit ​​part of the cap body from the first surface of the cap body. The first surface is also the appearance surface. After installation, the snap-fit ​​part is subjected to force by the insert, and the problem of pits on the appearance surface is solved by utilizing the rigid deformation of the insert.

[0004] According to an embodiment of the present utility model, the filling port cap includes: a cap body, an insert, and a snap-fit ​​portion. The cap body, the insert, and the snap-fit ​​portion are integrally injection molded, and the insert is located inside the cap body. The cap body includes a first surface and a second surface. The insert is located near the second surface. The snap-fit ​​portion is provided on the side of the second surface opposite to the first surface. The snap-fit ​​portion is adapted to connect with the filling port hinge arm of the vehicle body.

[0005] According to an embodiment of this utility model, the filling cap, the cap body, the insert, and the snap-fit ​​part are integrally injection molded. The insert is located inside the cap body and close to the second surface of the cap body. The snap-fit ​​part is located inside the cap body and connected to the second surface of the cap body. During the injection molding of the cap body, an insert with a certain rigidity is embedded inside. The insert separates the snap-fit ​​part inside the cap body from the first surface of the cap body. The first surface is the outer surface, that is, after the filling cap is installed on the filling port of the vehicle body, the first surface faces outward. The setting of the insert solves the shrinkage problem at the snap-fit ​​part position during the injection molding process. After installation, the snap-fit ​​part is stressed by the insert. The deformation of the insert solves the pit problem on the first surface.

[0006] According to the filling cap of this utility model embodiment, a portion of the second surface protrudes towards the inside of the vehicle to form a raised structure, so that the insert is located inside the raised structure, and the snap-fit ​​portion is located on the side of the raised structure facing the inside of the vehicle.

[0007] According to the filling cap of this utility model embodiment, the second surface includes a first area surface and a second area surface located around the first area surface, and an arc-shaped transition surface is formed at the transition between the first area surface and the second area surface.

[0008] According to the filling cap of this utility model embodiment, the distance between the insert and the first surface is L2, and the distance between the second area surface and the first surface is L1, and satisfies: L2≥L1.

[0009] According to the filling cap of this utility model embodiment, the thickness of the inner insert is d, and satisfies: 0mm<d≤1mm.

[0010] According to the filling cap of this utility model embodiment, the insert is constructed as a polygonal structure, and the transition between adjacent sides of the polygonal structure is a rounded corner, and the radius of the rounded corner is R. The width of the insert along the first direction is L3, and satisfies: R≥L3 / 3.

[0011] According to an embodiment of the present utility model, the filling port cap is constructed in an L-shape to form a first locking groove between the locking part and the cap body. The filling port hinge arm is provided with a second locking groove. The locking part is used to lock into the second locking groove, and at least a portion of the filling port hinge arm is adapted to extend into the first locking groove.

[0012] According to the filling cap of this utility model embodiment, a reinforcing rib is also connected to one side of the snap-fit ​​portion.

[0013] According to the embodiment of the present utility model, the filling cap has multiple snap-fit ​​parts, and the multiple snap-fit ​​parts are spaced apart and injection molded on one side of the cap body. The cap body is provided with the insert corresponding to the position of each snap-fit ​​part, and the multiple snap-fit ​​parts are adapted to be connected one-to-one with the multiple second snap-fit ​​grooves of the vehicle body.

[0014] A vehicle according to an embodiment of the present utility model includes the above-described filler cap.

[0015] The advantages of the vehicle compared to existing technologies and the refueling cap compared to existing technologies are the same, and will not be elaborated here.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a partial cross-sectional structural diagram of the filling cap according to an embodiment of the present utility model; Figure 2 This is a schematic cross-sectional view of the filling cap according to an embodiment of the present utility model; Figure 3 This is a schematic diagram of the connection between the snap-fit ​​part of the filling port cap and the filling port hinge arm in an embodiment of this utility model; Figure 4 This is a schematic diagram of the structure of the filling port cap having multiple snap-fit ​​parts according to an embodiment of the present utility model; Figure 5 This is a schematic diagram of the embedded structure inside the filling cap of this utility model embodiment.

[0018] Figure label: Add 100 to the cap. The cap body 1 has a first surface 11, a second surface 12, a second area surface 121, an arc-shaped transition surface 122, a first area surface 123, an insert 2, a second side length 21, a flow hole 22, a first side length 23, a snap-fit ​​part 3, a first snap-fit ​​groove 31, a first section 32, a second section 33, a raised structure 4, a filling port hinge arm 5, a vertical section 51, a horizontal section 52, a support section 53, a second snap-fit ​​groove 54, and a reinforcing rib 6. Detailed Implementation

[0019] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0020] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] The existing filling cap 100 has stress concentration in the area where the snap-fit ​​part 3 is located, which causes pitting problems due to stress concentration on the outer surface of the filling cap 100; during the injection molding process, the structural features of the snap-fit ​​part 3 have melt flow dead corners, and the material shrinkage stress concentration during injection cooling causes shrinkage marks on the appearance surface of the filling cap 100; moreover, after the filling cap 100 is installed with the filling port hinge arm 5, the local tensile force at the installation point of the filling cap 100 is large, resulting in local pitting on the surface of the filling cap 100 and uneven surface gloss.

[0022] The following is for reference. Figures 1-5 According to an embodiment of the present utility model, the filling cap 100 has an embedded member 2 inside, which separates the snap-fit ​​part 3 of the cap from the first surface 11 of the cap body 1. The first surface 11 is also the appearance surface. The first surface 11 of the cap body 1 is separated from the snap-fit ​​part 3. After installation, the snap-fit ​​part 3 is subjected to force on the embedded member 2. The problem of pits on the appearance surface is solved by using the rigid deformation of the embedded member 2.

[0023] like Figure 1-5As shown, according to an embodiment of the present invention, a filling port cap 100 includes: a cap body 1, an insert 2, and a snap-fit ​​part 3. The cap body 1, the insert 2, and the snap-fit ​​part 3 are integrally injection molded, and the insert 2 is located inside the cap body 1. The cap body 1 includes a first surface 11 and a second surface 12. The insert 2 is located near the second surface 12. The snap-fit ​​part 3 is provided on the side of the second surface 12 away from the first surface 11. The snap-fit ​​part 3 is adapted to be connected to the filling port hinge arm 5 of the vehicle body.

[0024] In practice, the filler cap 100 includes the fuel filler cap and the gas filler cap. The core features of the fuel filler cap and the gas filler cap are safety sealing, prevention of misoperation, convenient identification, and compatibility with fuel characteristics. Both the fuel filler cap and the gas filler cap must be strictly sealed to prevent leakage and evaporation of gasoline, diesel, natural gas, etc., while also preventing dust, rainwater, and other impurities from entering the fuel system, ensuring safe storage and use. Moreover, the filler cap 100 is mostly located on one side of the vehicle body, often near the rear wheel, and is a component that covers the filler cap on the vehicle body. The opening methods include in-vehicle button, lever control, or automatic pop-out by pressing. Some models require a mechanical key to unlock, preventing unauthorized opening.

[0025] Specifically, during the manufacturing of the filling cap 100, an internally arranged rigidly deformable insert 2 is incorporated. The insert 2 is made of steel plate, whose advantages include high strength, light weight, and good plasticity and toughness. Furthermore, the insert 2 and the cap body 1 are integrally injection molded. The core advantages of injection molding are high production efficiency, good product consistency, and the ability to manufacture complex structural parts, making it particularly suitable for mass production. Moreover, the precision of the mold dimensions determines the product precision; products produced by injection molding from the same mold have highly uniform dimensions and shapes, resulting in a low scrap rate. (Refer to...) Figure 1 As shown, the filler cap 100 has a first surface 11 facing outwards from the vehicle and a second surface 12 facing inwards from the vehicle. When the filler cap 100 is installed on the filler cap hinge arm 5, the first surface 11 of the filler cap 100 is flush with the surface of the vehicle body, thereby ensuring the flatness of the vehicle's outer surface.

[0026] Furthermore, the inside of the cap body 1 of the filling port cap 100 is injection molded with an insert 2. The insert 2 is a steel plate and is parallel to the first surface 11. The insert 2 can be located exactly at the position of the second surface 12, or the insert 2 can be located between the second surface 12 and the first surface 11, and the distance between the insert 2 and the second surface 12 is less than the distance between the insert 2 and the first surface 11. At the same time, the side of the second surface 12 facing the vehicle interior is provided with a snap-fit ​​part 3. The snap-fit ​​part 3 can snap-fit ​​with the filling port hinge arm 5. The snap-fit ​​method makes it easy to connect the filling port cap 100 to the filling port of the vehicle body. After connection, when the connection part is subjected to force, the force is transmitted to the steel plate. For example, the steel plate deforms to absorb the force, and the steel plate can isolate the force from the first surface 11, thereby avoiding the force from being transmitted to the first surface 11 and causing the first surface 11 to have a local dent.

[0027] Furthermore, the steel plate is close to or attached to the second surface 12 of the injection molded part, and physical isolation ensures that the steel plate does not affect the appearance quality of the cap body 1, which is the first surface 11. This achieves optimized force transmission path. The tension of the snap-fit ​​part 3 is first transmitted to a local position of the steel insert 2. The insert 2, through its high rigidity, decomposes the concentrated force and transmits it to the entire insert 2. The force can also be transmitted to the mating surface between the insert 2 and the cap body 1, that is, the contact surface between the second surface 12 and the steel insert 2, further dispersing the stress, avoiding stress on the first surface 11, and improving the flatness of the first surface 11.

[0028] In some embodiments, a portion of the second surface 12 protrudes toward the inside of the vehicle to form a raised structure 4, such that the insert 2 is located inside the raised structure 4, and the snap-fit ​​portion 3 is located on the side of the raised structure 4 facing the inside of the vehicle.

[0029] Reference Figure 1 As shown, the second surface 12 protrudes towards the inside of the vehicle to form a raised structure 4, and the steel plate is integrally injection molded inside the raised structure 4. The snap-fit ​​part 3 is located on the side of the raised structure 4 facing the inside of the vehicle. When the snap-fit ​​part 3 is connected to the filling port hinge arm 5, the connection strength of the snap-fit ​​part 3 at the location of the cover body 1 can be improved, thereby providing a reliable force-bearing mounting point for the snap-fit ​​part 3 and preventing the cover body 1 from deforming at this location when the force is concentrated. Moreover, the second surface 12 protrudes towards the inside of the vehicle, which allows the insert 2 to be located inside the raised structure 4 and prevents the insert 2 from affecting the shape and structure of the first surface 11. That is, while ensuring that the first surface 11 is flush with the surface of the vehicle body, an insert 2 of a set thickness can be injection molded inside the cover body 1. Without affecting the appearance, the location of the cover body 1 connected to the snap-fit ​​part 3 can be strengthened. At the same time, the steel plate also absorbs the deformation caused by the force concentration and blocks the force from being transmitted to the first surface 11, thus preventing the first surface 11 from denting.

[0030] It should be noted that the protruding structure 4 is only provided at the position where the snap-fit ​​part 3 is provided on the cap body 1, so that the reinforcement is provided at the position where reinforcement is required, and the original thickness is maintained at the position where reinforcement is not required. Thus, the connection position of the cap body 1 can be reinforced while saving materials.

[0031] In some embodiments, the second surface 12 includes a first region surface 123 and a second region surface 121 located around the first region surface 123, and an arcuate transition surface 122 is formed at the transition between the first region surface 123 and the second region surface 121.

[0032] Reference Figure 1 and Figure 3 As shown, the second surface 12 includes a first region surface 123. The extension length of the first region surface 123 along the vehicle's longitudinal direction can be greater than or equal to the length of the steel plate along the vehicle's longitudinal direction, which is the vehicle's longitudinal direction. Figure 1 and Figure 3 The left and right directions, such as Figure 1 The left side can be either the front or the rear of the vehicle. Figure 1 When the left side is the front of the vehicle, then the right side is the rear of the vehicle. Figure 3 forward and backward directions and Figure 1 The front and back directions are opposite, such as Figure 1 The left side is Figure 3 On the right side; an arc-shaped transition surface 122 is formed between the first area surface 123 and the surrounding second area surface 121, thereby avoiding stress concentration at the junction between the first area surface 123 and the second area surface 121. When the force is transmitted from the snap-fit ​​part 3 to the first area surface 123, since the first area surface 123 and the second area surface 121 are arc-shaped transitions, a part of the force can be gradually transmitted to the surrounding second area surface 121, and another part of the force is transmitted to the insert 2, so that the insert 2 deforms to absorb the force, thereby reducing the deformation of the overall cap body 1.

[0033] Furthermore, after the snap-fit ​​part 3 is connected to the filling port hinge arm 5, the filling port hinge arm 5 exerts a pulling force on the snap-fit ​​part 3, which can make the pulling force mainly at the steel plate and the protruding structure 4 of the first area surface 123. Moreover, the position of the protruding structure 4 has a greater ability to bear the force than other parts, thereby reducing the impact of the force on the entire filling port cover 100.

[0034] In some embodiments, the distance between the insert 2 and the first surface 11 is L2, and the distance between the second region surface 121 and the first surface 11 is L1, and the following condition is met: L2≥L1.

[0035] Combination Figure 1 and Figure 3As shown, the distance between the side of the insert 2 facing the first surface 11 and the first surface 11 is greater than or equal to the distance between the second area surface 121 and the first surface 11. That is, when the steel plate is located between the first surface 11 and the second surface 12, and the distance between the side of the insert 2 facing the first surface 11 and the first surface 11 is equal to the distance between the second area surface 121 and the first surface 11, the upper surface of the steel plate can remain flush with the second area surface 121 of the second surface 12. In this case, the distance between the upper surface of the steel plate and the first surface 11 is L1. Therefore, during injection molding, the flow of the injection molding liquid can be kept more uniform, and the flow of the injection molding liquid on the side of the steel plate facing the first surface 11 can be kept more uniform. This ensures a more uniform density of the injection cap 100. A uniform density of the injection cap 100 results in better appearance quality, a smoother surface, and no obvious weld lines, air bubbles, or other defects. At the same time, it can reduce internal air bubbles and stress concentration, improve the strength and durability of the product, and reduce the risk of cracking or damage during use.

[0036] Furthermore, when the steel plate is located between the first surface 11 and the second surface 12, the upper surface of the steel plate can be kept closer to the inside of the vehicle than the second surface 121, that is, along... Figure 1 From the perspective of the second region surface 121, which is higher than the upper surface of the steel plate, the steel plate can be located inside the protruding structure 4 as a whole, and the position of the steel plate is closer to the position of the snap-fit ​​part 3. This can also reduce the impact of the steel plate injection molding on the appearance of the first surface 11, and reduce the problem of the snap-fit ​​part 3 pulling on the first surface 11 when the force is concentrated, causing the first surface 11 to be dented.

[0037] In some embodiments, the thickness of the insert 2 is d, and satisfies: 0mm < d ≤ 1mm.

[0038] The thickness of the insert 2 can be set to 1mm. A 1mm thick steel plate can improve the structural strength of the filling port cover 100, save materials, achieve the requirement of lightweighting, and save space. It also avoids the problem of the filling port cover 100 being too thick due to the thickness of the insert 2, which would cause interference with the surrounding structure, thus reducing the impact on the appearance of the filling port cover 100. Of course, it can also be set to 0.8mm, 0.7mm, 0.9mm, etc. Moreover, the steel plate has high strength and rigidity. Injecting it into the filling port cover 100 can improve the overall strength of the filling port cover 100, enabling it to withstand greater external forces and pressures. For example, it can better maintain its shape and structural integrity when subjected to collisions or compression. In addition, the steel plate has a relatively low coefficient of thermal expansion. Injecting it into the filling port cover 100 can help stabilize the dimensions of the filling port cover 100 and reduce dimensional deformation caused by factors such as temperature changes. This ensures the fitting accuracy between the filling port cover 100 and the filling port of the vehicle body and prevents problems such as leakage.

[0039] In some embodiments, the inlay 2 is constructed as a polygonal structure, and the transition between adjacent sides of the polygonal structure is a rounded corner with a radius of R. The width of the inlay 2 along the first direction is L3, and satisfies: R≥L3 / 3.

[0040] Reference Figure 5 As shown, the embedded part 2 has a structure similar to a quadrilateral, but this quadrilateral structure includes a first side length 23 and a second side length 21 that are opposite each other along a first direction and a second side length 21 that are opposite each other along a second direction. That is, the first direction is the width direction of the filling cap 100, and the second direction is the length direction of the filling cap 100. The first side length 23 and the second side length 21 are connected, wherein the second side length 21 is an arc-shaped side length and forms an arc transition with the first side length 23. The radius of the rounded corner of the arc-shaped side length is greater than or equal to 1 / 3 of the width of the embedded part 2. The width of the embedded part 2 is... Figure 5 The width of L3 is increased, thereby enlarging the rounded corners of insert 2. If this area were a sharp corner, it would easily lead to localized thermal stress concentration, such as weld lines and cooling differences. Therefore, a large rounded corner is needed to eliminate sharp edges and reduce the risk of uneven heat transfer. Furthermore, in terms of injection speed, the melt filling speed in the sharp corner area can be reduced, avoiding localized overheating caused by high-speed filling. Of course, insert 2 can also be designed as other polygonal structures, with an arc transition between adjacent sides to reduce stress concentration.

[0041] If R can be set to 1 / 3*L3 or R can be set to 3 / 4*L3, a good arc transition between the first side length 23 and the second side length 21 can be maintained, and a larger fillet can be set to reduce the problem of local thermal stress concentration.

[0042] It should also be noted that the insert 2 in this embodiment of the present invention is also provided with a flow hole 22. First, the flow hole 22 can reduce the amount of steel plate material used, thereby reducing the overall weight of the filling cap 100. This is important for some applications where weight is a requirement, and it can also reduce material costs. In addition, the flow hole 22 can change the stress distribution of the steel plate, reduce stress concentration, and allow the stress of the filling cap 100 to be more evenly distributed when subjected to external force, thereby improving its resistance to deformation and fracture and extending its service life. Moreover, the flow hole 22 on the steel plate can provide a channel for material flow during the injection molding process, which helps the material to fill the mold cavity more evenly, reduce the generation of molding defects such as bubbles and weld lines, and improve the appearance and internal quality of the product. At the same time, after the raw material flows from the flow hole 22, it can flow to the position where the snap-fit ​​part 3 is formed, which is beneficial to the formation of the snap-fit ​​part 3.

[0043] In some embodiments, the snap-fit ​​part 3 is configured as an L-shaped structure so that a first snap-fit ​​groove 31 is formed between the snap-fit ​​part 3 and the cap body 1, the filling port hinge arm 5 is provided with a second snap-fit ​​groove 54, the snap-fit ​​part 3 is used to snap into the second snap-fit ​​groove 54, and at least a portion of the filling port hinge arm 5 is adapted to extend into the first snap-fit ​​groove 31.

[0044] Reference Figure 3 As shown, the snap-fit ​​part 3 includes a first section 32 and a second section 33 that are bent and connected. One end of the first section 32 is connected to the second surface 12 of the filling port cap 100, and the second section 33 is bent and connected to the first section 32 to form a first snap-fit ​​groove 31. The filling port hinge arm 5 includes a vertical section 51 and a horizontal section 52 that are bent and connected. The vertical section 51 and the horizontal section 52 are bent and connected. It also includes a support section 53. The support section 53 is spaced apart from the vertical section 51, and a second snap-fit ​​groove 54 is formed between the support section 53 and the horizontal section 52. When the filler cap 100 and the filler hinge arm 5 are engaged, the second segment 33 of the engagement part 3 engages with the second engagement groove 54 formed by the filler hinge arm 5 on the vehicle body, and the support segment 53 supports the second segment 33. The transverse segment 52 of the filler hinge arm 5 contacts the second segment 33 of the engagement part 3, thereby forming a stable engagement and support. The support segment 53 and the transverse segment 52 together compress the second segment 33 of the engagement part 3, further improving the stability of the connection between the filler cap 100 and the filler hinge arm 5.

[0045] Furthermore, it should be noted that the thickness of the second segment 33 of the latching part 3 can be set to be greater than the thickness of the first segment 32. The second segment 33 is used to contact the transverse segment 52 of the filling port hinge arm 5, and is squeezed between the transverse segment 52 when subjected to force. Therefore, by setting the second segment 33 to be thicker, the reliability of the second segment 33 latching into the second latching groove 54 can be improved. Of course, in actual design, the thickness of the first segment 32 and the thickness of the second segment 33 can also be set to be the same, provided that the strength requirements are met, which can also ensure the reliability of the connection between the second segment 33 and the second latching groove 54.

[0046] In some embodiments, a reinforcing rib 6 is also connected to one side of the snap-fit ​​portion 3. (Refer to...) Figure 4As shown, both the first segment 32 and the second segment 33 of the latching part 3 are connected to reinforcing ribs 6. However, the connection of the reinforcing ribs 6 does not affect the opening of the first latching groove 31. By setting the reinforcing ribs 6, it is possible to ensure that the transverse segment 52 of the filling port hinge arm 5 overlaps at the first latching groove 31, while also strengthening the latching part 3. This further prevents the latching part 3 from being damaged or failing due to stress concentration after it is connected to the second latching groove 54 of the filling port hinge arm 5. Furthermore, the length of the reinforcing rib 6 can be longer than the length of the second segment 33 of the latching part 3, and the width can be at least equal to the width of the first segment 32. This means that the reinforcing rib 6 and the latching part 3 are connected together to the cap body 1, improving the structural strength of the latching part 3 and reducing the deformation problem when the latching part 3 is engaged with the filling port hinge arm 5.

[0047] In some embodiments, there are multiple snap-fit ​​parts 3, and the multiple snap-fit ​​parts 3 are spaced apart and injection molded on one side of the cover body 1. The cover body 1 is provided with an insert 2 corresponding to the position of each snap-fit ​​part 3, and the multiple snap-fit ​​parts 3 are adapted to be connected one-to-one with the multiple second snap-fit ​​grooves 54 of the vehicle body.

[0048] like Figure 4 In the middle, there are six snap-fit ​​parts 3, which form two rows, and each row has three snap-fit ​​parts 3. The corresponding position of each snap-fit ​​part 3 can be filled with an insert 2 inside the cap body 1, or the three snap-fit ​​parts 3 in each row can share one insert 2; for example Figure 4 In this process, the insert 2 extends inside the cap body 1 along the distribution direction of the three snap-fit ​​parts 3, thereby enabling one insert 2 to simultaneously reinforce the positions of the three snap-fit ​​parts 3. At this time, it is not necessary to set too many inserts 2, which is convenient for processing and can better reinforce the filling cap 100.

[0049] Of course, in actual operation, an insert 2 can also be provided at the position of the cover body 1 corresponding to each snap-fit ​​part 3. If each snap-fit ​​part 3 is located at the middle of the length of each insert 2 extending along the first direction, it can ensure that the force of the snap-fit ​​part 3 is evenly transmitted to the insert 2, thereby making the force uniform; the first direction can be understood as Figure 4 The direction of each row is defined by three latching parts 3, and the second direction is the spacing distribution direction between the latching parts 3 of the two rows.

[0050] Additionally, it should be noted that each snap-fit ​​part 3 is connected to a reinforcing rib 6 on one side. The reinforcing ribs 6 corresponding to the two rows of snap-fit ​​parts 3 are located on the side of the two rows of snap-fit ​​parts 3 that are far away from each other. When the transverse section 52 of the second snap-fit ​​groove 54 of the filling port hinge arm 5 snaps into the first snap-fit ​​groove 31, the reinforcing rib 6 can limit the transverse section 52 along the second direction, that is, along the distribution direction of the two rows of snap-fit ​​parts 3, thereby ensuring the stability of the connection between the filling port cover 100 and the vehicle body and avoiding the positional change of the filling port cover 100 caused by vehicle vibration. Furthermore, the filling port hinge arm 5 is provided with multiple second snap-fit ​​grooves 54 that correspond one-to-one with the multiple snap-fit ​​parts 3, thereby forming a one-to-one snap-fit ​​between the multiple snap-fit ​​parts 3 and the multiple second snap-fit ​​grooves 54.

[0051] Furthermore, the three snap-fit ​​parts 3 in each row are evenly spaced, and the multiple snap-fit ​​parts 3 in two rows can also correspond one-to-one along the width direction, thereby improving the uniformity of force after the filling port cover 100 is connected to the filling port of the vehicle body, thus avoiding the problem of poor flatness between the filling port cover 100 and the vehicle body due to local depressions.

[0052] This utility model embodiment also discloses a vehicle, including the aforementioned filling port cap 100. A steel plate is injection-molded inside the cap body 1, isolating the first snap-fit ​​groove 31 from the first surface 11 (exterior surface) of the cap body 1. When the first snap-fit ​​groove 31 is subjected to the tensile force of the filling port hinge arm 5, the force is transmitted to the insert 2. The insert 2 interrupts the tensile force, distributing it throughout the entire insert 2, thereby solving the stress concentration problem at the first snap-fit ​​groove 31 of the snap-fit ​​part 3 and also solving the problem of pitting caused by tensile stress on the first surface 11 of the cap body 1. The insert 2 is positioned opposite and close to the non-exterior surface (i.e., the second surface 12) of the injection-molded filling port cap 100, ensuring through physical isolation that the insert 2 does not affect the molding quality of the exterior surface of the filling port cap 100. Furthermore, the insert 2 has a large rounded corner design on its outer periphery to balance heat transfer and avoid quality problems on the injection-molded exterior surface of the cap body 1 caused by uneven heat conduction.

[0053] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0054] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A filling cap (100), characterized in that, include: The cap body (1), the insert (2) and the snap-fit ​​part (3) are integrally injection molded. The insert (2) is located inside the cap body (1). The cap body (1) includes a first surface (11) and a second surface (12). The insert (2) is located near the second surface (12). The snap-fit ​​part (3) is provided on the side of the second surface (12) away from the first surface (11). The snap-fit ​​part (3) is adapted to be connected to the filling port hinge arm (5) of the vehicle body.

2. The filling cap (100) according to claim 1, characterized in that, The second surface (12) protrudes partially toward the inside of the vehicle to form a raised structure (4) such that the insert (2) is located inside the raised structure (4) and the snap-fit ​​portion (3) is located on the side of the raised structure (4) facing the inside of the vehicle.

3. The filling cap (100) according to claim 2, characterized in that, The second surface (12) includes a first area surface (123) and a second area surface (121) located around the first area surface (123), and an arc-shaped transition surface (122) is formed at the transition between the first area surface (123) and the second area surface (121).

4. The filling cap (100) according to claim 3, characterized in that, The distance between the embedded part (2) and the first surface (11) is L2, and the distance between the second area surface (121) and the first surface (11) is L1, and satisfies: L2≥L1.

5. The filling cap (100) according to claim 1, characterized in that, The thickness of the insert (2) is d, and satisfies: 0mm < d ≤ 1mm.

6. The filling cap (100) according to claim 1, characterized in that, The inlay (2) is constructed as a polygonal structure, and the transition between adjacent sides of the polygonal structure is a rounded corner, and the radius of the rounded corner is R. The width of the inlay (2) along the first direction is L3, and satisfies: R≥L3 / 3.

7. The filling cap (100) according to claim 1, characterized in that, The latching part (3) is constructed in an L-shape so that a first latching groove (31) is formed between the latching part (3) and the cap body (1). The filling port hinge arm (5) is provided with a second latching groove (54). The latching part (3) is used to latch into the second latching groove (54), and at least a portion of the filling port hinge arm (5) is adapted to extend into the first latching groove (31).

8. The filling cap (100) according to claim 7, characterized in that, A reinforcing rib (6) is also connected to one side of the snap-fit ​​part (3).

9. The filling cap (100) according to claim 7, characterized in that, There are multiple snap-fit ​​parts (3), and the multiple snap-fit ​​parts (3) are spaced apart and injection molded on one side of the cover body (1). The cover body (1) is provided with the insert (2) corresponding to the position of each snap-fit ​​part (3). The multiple snap-fit ​​parts (3) are adapted to be connected one-to-one with the multiple second snap-fit ​​grooves (54) of the vehicle body.

10. A vehicle, characterized in that, Includes the filling cap (100) as described in any one of claims 1-9.

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