A buckle structure, a vehicle door assembly and a vehicle

Abstract

The utility model relates to vehicle assembly technical field, concretely relates to a buckle structure, car door assembly and vehicle. The buckle structure includes: first buckle, including base and connecting head, the connecting head sets up on the base, the base is used for with first sheet metal connection, second buckle, one end is provided with support frame, the other end is provided with connecting hard card, the connecting hard card is used for with second sheet metal connection, wherein, the support frame is provided with elastic card fin, the elastic card fin is with connecting head buckle connection. First buckle and second buckle are connected with elastic card fin through connecting head and are clamped, can quickly realize the connection of first sheet metal and second sheet metal, has changed the installation mode of traditional through metal screw, has reduced the installation time, has improved the installation efficiency, has saved the installation cost.

Description

Technical Field

[0001] This utility model relates to the field of vehicle assembly technology, specifically to a snap-fit ​​structure, a door assembly, and a vehicle. Background Technology

[0002] Consumers have placed stringent demands on the safety, comfort, and manufacturing efficiency of automobiles. Among these demands, the door panels, as a crucial component of the door system, serve functions such as decoration, sound insulation, and supporting interior components. Their safety in side-impact collisions directly impacts the lives of occupants. Therefore, improving assembly efficiency while ensuring the side-impact safety performance of front and rear door panels has become a critical issue that the automotive manufacturing industry urgently needs to address.

[0003] In existing technology, the assembly connection between the inner and outer door panels of automobiles and the door sheet metal typically employs a combination of ordinary plastic clips and metal screws. The plastic clips work by deforming the clip heads pre-installed on the door interior panel, forcing them into pre-drilled mounting holes in the door sheet metal, and then restoring their original shape due to their elasticity, thus locking and securing them in place. However, due to practical limitations during assembly, the interference fit of the clip heads cannot be designed to be too large, otherwise it will be difficult for them to fit into the mounting holes. Simultaneously, to ensure smooth deformation and assembly, the clips need to have a large amount of deformability, which affects the overall structural strength of the plastic clips, resulting in poor tensile strength and low pull-out force. During vehicle operation, when subjected to external forces such as vibration and impact, the plastic clips are prone to loosening, failing to reliably connect and secure the door panel to the door sheet metal.

[0004] To compensate for the insufficient tensile strength of plastic clips, existing technologies necessitate the use of metal screws for auxiliary connection, ensuring the door panel does not detach from the door sheet metal and thus guaranteeing vehicle safety. However, using metal screws requires a torque wrench for tightening, which often takes approximately 10 seconds per screw. This significantly increases assembly time for the door panel, reduces overall production cycle time, impacts automotive manufacturing efficiency, and increases production costs. Utility Model Content

[0005] This application addresses, to at least some extent, one of the technical problems in the related art.

[0006] Therefore, this application aims to provide a snap-fit ​​structure, a door assembly, and a vehicle.

[0007] To achieve the above objectives, in a first aspect, this application provides a snap-fit ​​structure, comprising:

[0008] The first buckle includes a base and a connector; the connector is disposed on the base; the base is used to connect with a first sheet metal part.

[0009] The second buckle has a support frame at one end and a connecting hard clip at the other end. The connecting hard clip is used to connect with the second sheet metal. A sealing structure is provided in the middle for sealing between the second buckle and the second sheet metal.

[0010] The support frame is equipped with elastic clips, which engage with the connector.

[0011] In the technical solution, the first and second clips are connected to the elastic clips via a connector, which enables the quick connection between the first and second sheet metal parts. This changes the traditional installation method using metal screws, reduces installation time, improves installation efficiency, and saves installation costs. The sealing structure can seal the connection gap between the second clip and the second sheet metal part, preventing dust, rainwater, and other substances from entering.

[0012] In some embodiments of this application, two elastic clips are symmetrically arranged, and the elastic clips are inclined from the side away from the first buckle toward each other;

[0013] The two elastic clips are positioned close to each other at one end and abut against the side of the connector away from the support frame to achieve the engagement of the first and second clips.

[0014] In the technical solution, the two symmetrical elastic clips converge inward, and the connector is inserted into the elastic clip. One end of the elastic clip firmly abuts against the inner side of the connector, so that the first and second clips can be securely connected and will not come loose.

[0015] In some embodiments of this application, the base includes:

[0016] A sliding connection part is provided on the side of the base for insertion into the mounting part on the first sheet metal.

[0017] The first limiting member is used to limit the position of the first buckle on the mounting part.

[0018] In the technical solution, the sliding connection part is connected to the mounting part on the first sheet metal, which limits the vertical and horizontal displacement of the first buckle. The first limiting member is locked in the first limiting hole of the mounting part, which restricts the displacement of the first buckle in the front and back directions and improves the stability of the connection.

[0019] In some embodiments of this application, the first buckle further includes a second limiting member for engaging with the mounting portion to limit the front-to-back position of the first buckle on the mounting portion.

[0020] In the technical solution, the second limiting member is engaged in the second limiting hole of the mounting part, which further restricts the displacement of the first buckle in the front and rear directions and further improves the stability of the connection; at the same time, the second limiting member is set at the insertion end of the base, which can prevent the first buckle from being inserted in the wrong direction when it mates with the first sheet metal.

[0021] In some embodiments of this application, the first buckle is further provided with a connecting wing, one end of which is disposed at the connector, the base, or the junction of the connector and the base, and the connecting wing extends obliquely from one end to the other in a direction away from the base.

[0022] In the technical solution, after the first buckle and the second buckle are connected, one end of the connecting wing is fixed on the first buckle and tilts outward to abut against the second buckle, which can reduce the buffering between the first buckle and the second buckle.

[0023] In some embodiments of this application, the second buckle further includes elastic clips disposed on both sides of the connecting hard clip.

[0024] In the technical solution, the elastic clips are set on both sides of the connecting hard clip, perpendicular to the position direction of the connecting hard clip. This can improve the stability of the connection between the second clip and the second sheet metal, and at the same time, avoid incorrect orientation during installation, thus improving installation efficiency.

[0025] In some embodiments of this application, the center of one end of the elastic card of the second buckle is set with a hollow structure for deformation of the elastic card, so as to facilitate the second buckle to be snapped into place.

[0026] In the technical solution, when the second buckle is connected to the second sheet metal buckle, the elastic buckle deforms inward and reduces its width, making it easier for the connecting hard buckle to be inserted into the connecting hole of the second sheet metal. The hollow structure makes it easier for the elastic buckle to deform and shrink inward.

[0027] In some embodiments of this application, the second buckle further includes a connecting plate, one side of which is provided with a connecting hard clip and a sealing structure, wherein the sealing structure surrounds the connecting hard clip; the other side is provided with a support frame.

[0028] In the technical solution, the connecting plate is used to connect the support frame and the connecting hard clip. The sealing mechanism is set on the connecting plate. After the snap-fit ​​structure connects the second sheet metal and the first sheet metal, the sealing mechanism can abut against the second sheet metal to seal.

[0029] In a second aspect, this application provides a door assembly, including a first sheet metal, a second sheet metal, and a snap-fit ​​structure as described in the first aspect.

[0030] In the technical solution, the first sheet metal and the first clip, the second sheet metal and the second clip, and the first clip and the second clip are all connected by a snap-fit ​​method, which improves the installation efficiency of the door assembly and reduces costs.

[0031] In some embodiments of this application, the mounting portion provided on the first sheet metal includes:

[0032] The upper surface, intermediate ribs, and supporting ribs are used to limit the position of the sliding connection.

[0033] The first limiting hole is provided on both sides of the mounting part for positioning the first limiting member;

[0034] The second limiting hole is provided at one end of the mounting part and is used for positioning the second limiting member.

[0035] In the technical solution, the sliding connection part and the mounting part are connected in cooperation. The upper surface, middle rib and support rib of the mounting part restrict the left and right and up and down positions of the first buckle; the first limiting hole restricts the front and back positions of the first buckle, and the second limiting hole further restricts the front and back positions of the first buckle. The double limiting improves the stability of the connection and prevents the connection from loosening.

[0036] In some embodiments of this application, the second sheet metal is provided with a connection hole, which is used for the snap-fit ​​and fixation of the connecting hard card.

[0037] In the technical solution, after the elastic card is deformed by compression, the connecting hard card can be inserted into the second sheet metal through the connecting hole, and then rotated 90 degrees to lock the connecting hard card onto the second sheet metal.

[0038] Thirdly, this application provides a vehicle, including a body and a snap-fit ​​structure as described in the first aspect.

[0039] In the technical solution, the door assembly in the vehicle body is equipped with a snap-fit ​​structure to replace the traditional metal screw connection method, which improves the installation efficiency and reduces the cost.

[0040] As can be seen from the above technical solutions, additional aspects and advantages of this application 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 this application. Attached Figure Description

[0041] Figure 1 This is a partial structural schematic diagram of a door assembly according to an embodiment of this application;

[0042] Figure 2 This is a partial structural schematic diagram of a door assembly according to an embodiment of this application;

[0043] Figure 3This is a schematic diagram of the overall structure of the snap-fit ​​structure according to the embodiments of this application;

[0044] Figure 4 This is a schematic diagram of the overall structure of the first buckle according to the embodiment of this application;

[0045] Figure 5 This is a schematic diagram of the overall structure of the first buckle according to the embodiment of this application;

[0046] Figure 6 This is a schematic diagram of the overall structure of the first buckle according to the embodiment of this application;

[0047] Figure 7 This is a schematic diagram of the overall structure of the second buckle according to an embodiment of this application;

[0048] Figure 8 This is a schematic diagram of the overall structure of the second buckle according to an embodiment of this application;

[0049] Figure 9 This is a partial structural schematic diagram of the first sheet metal according to an embodiment of this application;

[0050] Figure 10 This is a partial structural schematic diagram of the second sheet metal according to an embodiment of this application.

[0051] In the above figures: 1. First buckle; 11. Base; 111. Sliding connection; 112. First limiting member; 113. Second limiting member; 12. Connector; 13. Connecting wing;

[0052] 2. Second buckle; 21. Support frame; 211. Elastic clip; 22. Connecting hard clip; 23. Elastic clip; 24. Hollow structure; 25. Sealing structure; 26. Connecting plate; 27. Reinforcing rib; 28. Support foot;

[0053] 3. First sheet metal; 31. Mounting part; 311. Upper surface; 312. Intermediate rib; 313. Support rib; 314. First limiting hole; 315. Second limiting hole;

[0054] 4. Second sheet metal; 41. Connecting hole. Detailed Implementation

[0055] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application 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 application.

[0056] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0057] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0058] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. 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. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0059] The present application will now be described in detail through exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may be advantageously incorporated into other embodiments.

[0060] It should be noted that in the automotive industry, door panels, as an important component of the door system, serve functions such as decoration, sound insulation, and supporting interior components. Their safety in the event of a side collision is crucial to the lives of passengers. How to further improve the assembly efficiency of front and rear door panels while ensuring their side-impact safety performance has become a critical issue that the automotive manufacturing industry urgently needs to address.

[0061] In existing technology, the assembly connection between the inner and outer door panels of automobiles and the door sheet metal typically employs a combination of ordinary plastic clips and metal screws. The plastic clips work by deforming the clip heads pre-installed on the door interior panel, forcing them into pre-drilled mounting holes in the door sheet metal, and then restoring their original shape due to their elasticity, thus locking and securing them in place. However, due to practical limitations during assembly, the interference fit of the clip heads cannot be designed to be too large, otherwise it will be difficult for them to fit into the mounting holes. Simultaneously, to ensure smooth deformation and assembly, the clips need to have a large amount of deformability, which affects the overall structural strength of the plastic clips, resulting in poor tensile strength and low pull-out force. During vehicle operation, when subjected to external forces such as vibration and impact, the plastic clips are prone to loosening, failing to reliably connect and secure the door panel to the door sheet metal.

[0062] To compensate for the insufficient tensile strength of plastic clips, existing technologies necessitate the use of metal screws for auxiliary connection, ensuring the door panel does not detach from the door sheet metal and thus guaranteeing vehicle safety. However, using metal screws requires a torque wrench for tightening, which often takes approximately 10 seconds per screw. This significantly increases assembly time for the door panel, reduces overall production cycle time, impacts automotive manufacturing efficiency, and increases production costs.

[0063] Based on this, this application proposes a snap-fit ​​structure, a door assembly, and a vehicle. Through the snap-fit ​​connection of the first and second snap-fits, a quick connection between the first and second snap-fits is achieved. The door assembly includes a first sheet metal and a second sheet metal. The quick connection between the first snap-fit ​​and the first sheet metal, and the quick connection between the second snap-fit ​​and the second sheet metal, improves installation efficiency. It should be noted that the snap-fit ​​structure is not limited to sheet metal parts such as the first or second sheet metal; it can be used to connect other non-sheet metal parts.

[0064] In the following, embodiments of this application will be described in detail with reference to the accompanying drawings.

[0065] As attached Figures 1 to 10 As shown in the schematic embodiment of a snap-fit ​​structure in this application, the snap-fit ​​structure includes a first snap-fit ​​1, which includes a base 11 and a connector 12; the connector 12 is disposed on the base 11; the base 11 is used to connect with the first sheet metal 3; in practical applications, the first snap-fit ​​1 is usually referred to as a male connector.

[0066] In some embodiments, the snap-fit ​​structure further includes a second snap-fit ​​2, one end of which is provided with a support frame 21, and the other end is provided with a connecting hard clip 22, the connecting hard clip 22 being used to connect with the second sheet metal 4; the snap-fit ​​structure also includes a connecting plate 26, one side of which is fixedly provided with the support frame 21, and the other side of which is fixedly provided with the connecting hard clip 22, and a sealing structure 25 is provided on the side of the connecting plate 26 with the connecting hard clip 22, the sealing structure surrounding the connecting hard clip 22. In practical applications, the second snap-fit ​​2 is usually referred to as a female connector.

[0067] Furthermore, a reinforcing rib 27 is provided between the side of the support frame 21 and one side of the connecting plate 26 to enhance the connection stability of the support frame 21. A support foot 28 is also provided at one end of the support frame 21 so that the second buckle 2 can be supported on the first sheet metal 3.

[0068] Furthermore, a sealing structure 25 is provided on the connecting plate 26. When the second buckle 2 is connected to the second sheet metal 4, one side of the connecting plate 26 abuts against the second sheet metal 4, at which time the sealing structure 25 seals the connecting hole on the second sheet metal 4.

[0069] Furthermore, the support frame 21 is provided with elastic clips 211, which are snapped together with the connector 12. The first clip 1 and the second clip 2 are engaged with the elastic clips 211 through the connector 12, which enables a quick and reliable connection between the first sheet metal 3 and the second sheet metal 4. This changes the traditional installation method using metal screws, shortens the installation time, improves installation efficiency, and saves installation costs.

[0070] It should be noted that when the first latch 1 and the second latch 2 are engaged, the connector 12 engages with the elastic retaining fin 211. The connector 12 will push the elastic retaining fin 211 outward, and the support frame 21 provides an opposing force to prevent the elastic retaining fin 211 from expanding excessively outward and causing the engagement to loosen. After the first sheet metal 3 and the second sheet metal 4 are connected through the latch structure of this solution, the support foot 28 on the support frame 21 can support the first sheet metal 3. The purpose is to provide a force support when the first sheet metal 3 and the second sheet metal 4 approach each other under external force under certain working conditions, so that the force on the first sheet metal 3 and the second sheet metal 4 can be directly transmitted through the second latch 2, avoiding disorderly squeezing of the latch structure and causing damage to the latch structure.

[0071] In some embodiments, two elastic clips 211 are symmetrically arranged, or multiple clips are arranged according to actual force requirements, and multiple elastic clips 211 are evenly distributed around the support frame 21 to ensure force balance. When two elastic clips 211 are symmetrically arranged, the elastic clips 211 are inclined from the side away from the first latch 1 towards each other, presenting an inward V-shape structure. The open end of the inward V-shape is connected to the support frame 21, and the closed end opens inward to form a channel for easy insertion of the connector 12. The connector 12 has an overall arrow-like structural feature, with a triangular tip and a rectangular shaft.

[0072] Furthermore, the two symmetrical elastic clips 211 converge inward in a figure-eight shape. When the connector 12 is inserted between the elastic clips 211, the elastic clips 211 will wrap around the tip of the connector 12 by their own elastic deformation. One end of the elastic clip 211 can firmly abut against the inner side of the connector 12, forming a limit, so that the first latch 1 and the second latch 2 can be stably connected. Even under certain external impact or vibration, they will not loosen, ensuring the reliability of the connection.

[0073] During the actual snap-fit ​​process, the two elastic clips 211 approach each other at one end and abut against the side of the connector 12 away from the support frame 21. That is, after the tip is inserted into the elastic clip 211, the retracted end of the elastic clip 211 will abut against the inner side of the tip to achieve the snap-fit ​​of the first snap 1 and the second snap 2.

[0074] In some embodiments, the base 11 includes a sliding connection portion 111 disposed on the side of the base 11 for insertion into the mounting portion 31 on the first sheet metal 3; the sliding connection portion 111 is a rectangular track with an outward opening, while the mounting portion 31 of the first sheet metal 3 is a rectangular track with an inward opening, and the two are slidably connected to each other; here, the shapes of the sliding connection portion 111 and the mounting portion 31 of the first sheet metal 3 are not limited to rectangular tracks, but can also be triangular, dovetail-shaped or other irregular structures.

[0075] In some embodiments, a first limiting member 112 is also provided to limit the position of the first latch 1 on the mounting portion 31. The first limiting member 112 is a protrusion provided on the sliding connection portion 111, and the mounting portion 31 is provided with a groove or an opening. In this embodiment, the opening is a first limiting hole 314. When the sliding connection portion 111 slides into the mounting portion 31, the protrusion is engaged at the opening of the mounting portion 31.

[0076] Furthermore, the sliding connection 111 connects to the mounting portion 31 on the first sheet metal 3, limiting the vertical and horizontal displacement of the first buckle 1, preventing it from wobbling in these two directions. The first limiting member 112 is engaged within the first limiting hole 314 of the mounting portion 31, restricting the front-to-back displacement of the first buckle 1 and improving the stability of the connection.

[0077] In some embodiments, to make the connection between the first buckle 1 and the first sheet metal 3 more secure, the first buckle 1 is also provided with a second limiting member 113 for engaging with the mounting part 31, thereby further restricting the position of the first buckle 1 in the front-rear direction on the mounting part 31, forming over-constraint. The second limiting member 113 is configured as a barb, which can hook onto the side of the second limiting hole 315, making it less prone to loosening and increasing the stability of the connection.

[0078] Furthermore, when the second limiting member 113 is engaged in the second limiting hole 315 of the mounting part 31, the second limiting member 113 and the first limiting member 112 work together to restrict the displacement of the first buckle 1 in the front-back direction from different positions, further improving the stability of the connection. Even under complex working conditions such as impact and vibration, the reliability of the connection can be maintained. At the same time, the second limiting member 113 is located at the end of the base 11 in the insertion direction. Only when the first buckle 1 is inserted in the correct direction can the second limiting member 113 enter the second limiting hole 315 and complete the engagement. If the insertion direction is incorrect, the second limiting member 113 will remain on the outside to remind the installer of the installation error. Therefore, the second limiting member 113 can prevent the first buckle 1 from being inserted in the wrong direction when it mates with the first sheet metal 3, improving the accuracy and efficiency of the installation.

[0079] In some embodiments, two connecting wings 13 are symmetrically arranged on the first buckle 1. Multiple connecting wings 13 can also be arranged according to the force conditions to adapt to the space or force requirements in different scenarios. One end of the connecting wing 13 is fixed to the first opening, specifically it can be arranged on the connector 12 or the base 11. In this embodiment, the connecting wing 13 is arranged at the intersection of the connector 12 and the base 11. The connecting wing 13 gradually expands from one end to the other in an inclined manner away from the first buckle 1.

[0080] Furthermore, when the first buckle 1 and the second buckle 2 are connected, the connecting wing 13 is fixed at one end of the first buckle 1 to remain stable, while the other end, which is tilted outward, will abut against the second buckle 2. Since the connecting wing 13 has a certain elasticity, when there is relative shaking between the first buckle 1 and the second buckle 2 or when it is subjected to external impact, the connecting wing 13 can absorb and reduce these forces by its own elastic deformation, thereby protecting the connection between the two and extending the service life of the entire buckle structure.

[0081] In some embodiments, the second latch 2 further includes an elastic clip 23, which is disposed on both sides of the connecting hard clip 22.

[0082] Furthermore, the connecting hard clip 22 has a flat structure, and the elastic clips 23 are located on both sides of the connecting hard clip 22, perpendicular to the position direction of the connecting hard clip 22. When the second buckle 2 is connected to the second sheet metal 4, the narrow side of the flat connecting hard clip 22 needs to pass through the connecting hole 41 on the second sheet metal 4. At this time, the elastic clip 23 will be squeezed. When the elastic clip 23 is squeezed to a size smaller than the passage size of the connecting hole 41, the connecting hard clip 22 and the elastic clip 23 pass through the connecting hole 41, and the connection at this position is completed after rotating 90 degrees. The connecting hard clip 22 and the elastic clip 23 can improve the stability of the connection between the second buckle 2 and the second sheet metal 4. At the same time, observing the direction of the elastic clip 23 during installation can avoid incorrect orientation during installation and improve installation efficiency.

[0083] In some embodiments, the center of one end of the elastic card 23 of the second buckle 2 is provided with a hollow structure 24 to leave space for the elastic card 23 to deform. When snapped together, the elastic card 23 can retract inward when deformation is required, so that the second buckle 2 can be snapped into place.

[0084] Furthermore, when the second clip 2 is connected to the second sheet metal 4, the elastic clip 23 deforms inward to reduce its width, facilitating the insertion of the connecting hard clip 22 into the connecting hole of the second sheet metal 4. The hollow structure 24 further enhances the inward deformation of the elastic clip 23, reducing resistance during deformation. This makes the connection process between the second clip 2 and the second sheet metal 4 easier. The elastic clip 23, with its excellent deformation capability provided by the hollow structure 24, works in conjunction with the connecting hard clip 22 to complete the docking with the second sheet metal 4, avoiding installation jams or incomplete connections caused by difficulty in deformation of the elastic clip 23, thus improving the convenience and reliability of installation.

[0085] In some embodiments, to improve the sealing performance of the connection between the second snap-fit ​​2 and the second sheet metal 4, the second snap-fit ​​2 is also designed with a sealing structure 25. This sealing structure 25 is located in the middle of the second snap-fit ​​2 and can cover the areas where gaps may occur. The sealing structure 25 is shaped like two annular protrusions, used for sealing between the second snap-fit ​​2 and the second sheet metal 4. Through double sealing, the sealing effect is improved.

[0086] Furthermore, once the second clip 2 and the second sheet metal 4 are in place, the two annular protrusions will fit tightly against the surface of the second sheet metal 4, sealing any gaps that may exist at the connection point. Rainwater encountered in outdoor environments, moisture in humid conditions, and even dust and impurities will find it difficult to penetrate the connection. This effectively improves the sealing performance of the connection, preventing leakage of rainwater and other liquids due to poor sealing, protecting the internal structure of the connection from corrosion, and extending the service life of the entire device. It is suitable for applications requiring high sealing performance.

[0087] In some embodiments, a door assembly includes a first sheet metal 3, a second sheet metal 4, and a snap-fit ​​structure, providing a reliable connection for the stable assembly of the door.

[0088] Furthermore, during the assembly of the door assembly, the first sheet metal 3 and the first clip 1, the second sheet metal 4 and the second clip 2, and the first clip 1 and the second clip 2 are all connected using a snap-fit ​​method. Compared to traditional connection methods, which often require a large number of screws, bolts, and other fasteners, aligning each screw hole individually and tightening them is time-consuming and tedious. The snap-fit ​​method, however, simplifies the installation process by simply aligning the corresponding clip structures and performing a simple plugging or pressing motion to quickly complete the connection.

[0089] Furthermore, the snap-fit ​​connection method directly improves the installation efficiency of the door assembly, allowing for the assembly of more door assemblies to be completed within the same timeframe, thus contributing to faster overall production. Simultaneously, by eliminating the use of numerous metal fasteners, it reduces raw material procurement costs, thereby lowering the manufacturing cost of the door assembly to some extent. The snap-fit ​​method also facilitates subsequent maintenance and disassembly operations, further enhancing the economic efficiency of the door assembly.

[0090] In some embodiments, in order to better cooperate with the first buckle 1 to achieve a stable connection, the first sheet metal 3 is also provided with a mounting part 31. In actual application scenarios, the mounting part 31 is usually called a "doghouse".

[0091] Furthermore, the mounting part 31 includes an upper surface 311, a middle rib 312, and a support rib 313, which cooperate to form a rectangular track that opens inward. This track is used to connect with the rectangular track of the sliding connection part 111 on the first buckle 1, ensuring that the sliding connection part 111 will not move freely after installation. Simultaneously, the mounting part 31 also has first limiting holes 314 or grooves on both sides. These holes are designed to mate with the first limiting member 112 on the first buckle 1. When the first buckle 1 is installed in place, the first limiting member 112 will be embedded in the first limiting hole 314, achieving initial positioning and fixation. In addition, a second limiting hole 315 is provided at one end of the mounting part 31. The second limiting hole 315 corresponds to the second limiting member 113 on the first buckle 1 and is used to position the second limiting member 113, forming a secondary fixation.

[0092] Furthermore, when the first clip 1 connects to the first sheet metal 3, the sliding connection 111 forms a tight connection with the mounting part 31. At this time, the upper surface 311 of the mounting part 31 constrains the sliding connection 111 from above, the intermediate rib 312 constrains the sliding connection 111 from the middle, and the support rib 313 acts as a limit from the bottom, restricting the left-right and up-down positions of the first clip 1. The first limiting hole 314 locks the first limiting member 112, restricting the front-back position of the first clip 1 from one side; the second limiting hole 315 locks the second limiting member 113, further restricting the front-back position of the first clip 1 from one end. This double-limiting design improves the stability of the connection between the first clip 1 and the first sheet metal 3. When encountering bumps during vehicle operation or being touched by external forces during daily use, it can effectively prevent the connection from becoming loose, thus improving the stability of the door assembly connection.

[0093] In some embodiments, a connecting hole 41 is provided on the second sheet metal 4. The size and shape of the connecting hole 41 are used to cooperate with the connecting hard clip 22 of the second buckle 2 to achieve snap-fit ​​fixation. It is the interface for connecting the second sheet metal 4 and the second buckle 2. It should be noted that the shape of the connecting hole 41 is not limited to rectangle or circle, but can be other shapes.

[0094] Furthermore, when the connecting hole 41 is rectangular, a circular hole is provided in the middle of the rectangular hole. The circular hole enlarges the size of the middle part of the rectangular hole, making it easier for the elastic card 23 to pass through.

[0095] In the specific technical solution, when the second clip 2 is connected to the second sheet metal 4, the elastic clip 23 is first compressed and deformed, which temporarily reduces the width of the second clip 2. At this time, the connecting hard clip 22 can be smoothly inserted into the second sheet metal 4 through the rectangular hole. After the connecting hard clip 22 is inserted into place, the second clip 2 is rotated 90 degrees, causing the connecting hard clip 22 to rotate and form a cross-locking state with the rectangular hole, thereby locking the second sheet metal 4 and completing the stable connection between the two.

[0096] Furthermore, the deformation characteristics of the elastic clip 23 solve the size matching problem during insertion, and the rotation operation achieves reliable snap-fit ​​fixation without the need for additional tools. The operation is convenient and the connection is firm, further demonstrating the efficiency of the snap-fit ​​structure in the assembly process.

[0097] In some embodiments, a vehicle is also provided, which includes a body as the main structure and a snap-fit ​​structure. The snap-fit ​​structure, as a highly efficient connecting component, is used in the vehicle body construction, bringing convenience to vehicle assembly.

[0098] In the specific technical solution, the door assembly in the vehicle body is an application scenario of the snap-fit ​​structure. Traditional door assembly often relies on a large number of metal screws to connect various components. Workers need to align each screw hole individually and tighten the screws with tools, a cumbersome, time-consuming, and labor-intensive process. Furthermore, the procurement of the metal screws themselves and the manpower required for installation both increase costs. However, by using the snap-fit ​​structure described in this application, rapid assembly and cost reduction can be achieved. The relevant components in the door assembly are quickly connected via snap-fit, eliminating the need for screw tightening. Workers can complete the assembly process more quickly, improving the installation efficiency of the door assembly and shortening the overall vehicle production cycle. Eliminating the need for a large number of metal screws reduces material costs, saves labor costs during installation, and lowers the overall vehicle production cost. The application of the snap-fit ​​structure makes the connection during vehicle assembly more stable and improves assembly efficiency.

[0099] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A snap-fit ​​structure, characterized in that, include: The first buckle (1) includes a base (11) and a connector (12); the connector (12) is disposed on the base (11); the base (11) is used to connect with the first sheet metal (3); The second buckle (2) has a support frame (21) at one end and a connecting hard clip (22) at the other end. The connecting hard clip (22) is used to connect with the second sheet metal (4). A sealing structure (25) is provided in the middle for sealing between the second buckle (2) and the second sheet metal (4). The support frame (21) is provided with elastic clips (211), which are engaged with the connector (12).

2. The snap-fit ​​structure according to claim 1, characterized in that, Two elastic clips (211) are symmetrically arranged, and the elastic clips (211) are inclined from the side away from the first buckle (1) toward each other; The two elastic clips (211) are close to each other at one end and abut against the side of the connector (12) away from the support frame (21) to achieve the engagement of the first clip (1) and the second clip (2).

3. The snap-fit ​​structure according to claim 1, characterized in that, The base (11) includes: A sliding connection (111) is provided on the side of the base (11) for insertion into the mounting part (31) on the first sheet metal (3); The first limiting member (112) is used to limit the position of the first buckle (1) on the mounting part (31).

4. The snap-fit ​​structure according to claim 3, characterized in that, The first buckle (1) further includes a second limiting member (113) for engaging with the mounting part (31) to limit the position of the first buckle (1) on the mounting part (31).

5. A snap-fit ​​structure according to claim 1, characterized in that, The first buckle (1) is also provided with a connecting wing (13), one end of which is located at the junction of the connector (12), the base (11), or the connector (12) and the base (11). The connecting wing (13) extends from one end to the other in an inclined manner away from the base (11).

6. The snap-fit ​​structure according to claim 1, characterized in that, The second buckle (2) also includes an elastic clip (23), which is disposed on both sides of the connecting hard clip (22).

7. A snap-fit ​​structure according to claim 6, characterized in that, The center of one end of the elastic card (23) of the second buckle (2) is set with a hollow structure (24) for the elastic card (23) to deform, so that the second buckle (2) can be snapped into place.

8. The snap-fit ​​structure according to claim 1, characterized in that, The second buckle (2) also includes a connecting plate (26), one side of which is provided with a connecting hard clip (22) and a sealing structure (25), wherein the sealing structure (25) surrounds the connecting hard clip (22); the other side is provided with a support frame (21).

9. A door assembly, characterized in that, It includes the first sheet metal (3), the second sheet metal (4), and the snap-fit ​​structure as described in any one of claims 1-8.

10. A door assembly according to claim 9, characterized in that, The first sheet metal (3) is provided with a mounting part (31), including: The upper surface (311), the intermediate rib (312), and the supporting rib (313) are used to limit the position of the sliding connection (111); The first limiting hole (314) is provided on both sides of the mounting part (31) for positioning the first limiting member (112); The second limiting hole (315) is provided at one end of the mounting part (31) and is used for positioning the second limiting member (113).

11. A door assembly according to claim 9, characterized in that, The second sheet metal (4) is provided with a connection hole (41), which is used for the snap-fit ​​fixing of the connecting hard clip (22).

12. A vehicle, comprising a body, characterized in that, It also includes the snap-fit ​​structure as described in any one of claims 1-8.

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