Fastening structure and vehicle door assembly

Abstract

The utility model relates to the technical field of part assembly, and discloses a fastening structure and a vehicle door assembly, and the fastening structure comprises a sealing part and a clamping part. The sealing part is provided with a first end face and a second end face which deviate from each other, the first end face is connected with the clamping part, and the edge of the second end face is bent outwards to form a waterproof flange. The clamping part is provided with a limiting step extending in the circumferential direction, it is ensured that in the fastening process, the components are limited between the limiting step and the first end face, and one component can tightly abut against the waterproof flange to form a first seal and then tightly abut against the first end face to form another seal; the gap between the sealing part and the component is sealed, moisture and impurities are effectively prevented from invading, the sealing performance and stability of component connection are remarkably improved, and the sealing structure is suitable for precise connection scenes such as the door panel module and the automobile body metal plate of an automobile.

Description

Technical Field

[0001] The present application relates to the technical field of parts assembly, and further to a fastening structure and a vehicle door assembly. Background Art

[0002] At present, there are usually some key problems in the existing component fastening structure, especially in application scenarios where the sealing between components needs to be maintained. For example, in the automotive manufacturing industry, the connection between the plastic door module and the sheet metal inside the door must not only be strong, but also have good waterproof performance to prevent moisture from invading the interior of the vehicle and affecting vehicle performance and passenger comfort.

[0003] However, existing fastening structures often have difficulty in meeting the dual requirements of firm fastening and effective sealing. For example, some fastening structures may rely on bolts, screws or other fasteners to achieve the connection between components, which not only increases the complexity of assembly, but may also cause the sealing performance to deteriorate due to loosening or corrosion of the fasteners.

[0004] In summary, there is a need to improve the problems in the prior art. Utility Model Content

[0005] In view of the above-mentioned technical problems, the purpose of the present application is to provide a fastening structure and a door assembly, aiming to solve the problem of insufficient sealing performance of traditional fastening structures, improve the durability of the overall structure, and help solve cost issues.

[0006] In order to achieve the above-mentioned object, the present application provides a fastening structure for relative fastening between two or more components, comprising: a sealing portion and a clamping portion connected to each other;

[0007] The sealing portion comprises a first end face and a second end face which are arranged opposite to each other, the first end face is connected to the clamping portion, and the edge of the second end face is bent outward to form a waterproof retaining edge;

[0008] The clamping portion has a limiting step extending along its circumferential portion. In a tightened state, all of the components are simultaneously limited between the limiting step and the first end face and are in a stacked state, and one of the components abuts against the waterproof rib to form a first seal, and abuts against the first end face to form another seal, so as to close the gap between the sealing portion and the component.

[0009] In some embodiments, the active surface of the waterproof retaining edge is arc-shaped;

[0010] The edge of the first end face and the root of the waterproof retaining edge are transitioned through an annular guide surface, so that in a tightened state, the component can simultaneously abut against the active surface, the annular guide surface and the first end face to form a continuous seal.

[0011] In some embodiments, the size of the first end face is smaller than that of the second end face, and the first end face and the second end face are concentrically arranged, and the annular guide surface is inclined so that the sealing portion has a conical profile.

[0012] In some embodiments, the number of the limiting steps is two, and the two limiting steps are symmetrically distributed on the periphery of the clamping portion along the axial direction of the clamping portion, so that the clamping portion is in a "T" shape in vertical plane projection.

[0013] In some embodiments, each of the limiting steps is provided with a locking surface, and the two locking surfaces are oriented in different directions;

[0014] Each locking surface has an inclined arc profile, and the locking surface extends from the top edge of the limiting step to the bottom of the limiting step. The locking surface is used to correspond to a preset position on the pressing member when the clamping portion rotates.

[0015] In some embodiments, the clamping portion is a hollow structure, and a reinforcing rib structure is provided on the inner wall of the clamping portion, wherein the reinforcing rib structure includes at least one transverse plate distributed laterally and at least one longitudinal plate distributed longitudinally, and the transverse plates and the longitudinal plates are staggered and fixed to provide auxiliary reinforcement for the clamping portion.

[0016] In some embodiments, the sealing portion and the clamping portion are integrally injection molded.

[0017] Another aspect of the present application also provides a vehicle door assembly, comprising:

[0018] A door module; a body sheet metal; and the above-mentioned fastening structure, used to fasten the door module and the body sheet metal.

[0019] In some embodiments, a first assembly hole is provided on the door module, and a second assembly hole is provided on the body sheet metal, wherein the contours of the first assembly hole, the second assembly hole, and the clamping portion are all non-circular contours;

[0020] During tightening, the clamping portion passes through the first assembly hole and the second assembly hole in sequence, and rotates during operation, so that a misalignment is formed between the clamping portion and the second assembly hole to limit the clamping portion from coming out.

[0021] In some embodiments, a connecting groove is provided at the center of the second end surface, and the contour of the connecting groove is a non-circular contour for clamping an operating tool, so that the clamping portion can be driven to rotate by rotating the operating tool.

[0022] Compared with the prior art, the fastening structure and door assembly provided by the present application have the following beneficial effects:

[0023] 1. In the present application, the fastening structure design allows for relative fastening between two or more components, thereby improving the versatility and adaptability of the fastening structure. The sealing portion is provided with a waterproof rib formed by bending outward, and the component is closely abutted against the first end face, forming a double sealing mechanism, which effectively isolates moisture and other external factors. At the same time, the limiting step of the clamping portion ensures the precise positioning of the component during fastening, thereby enhancing the stability and reliability of the overall connection.

[0024] 2. In the present application, an annular guide surface is designed between the edge of the first end face and the root of the waterproof retaining edge to provide a smooth transition. This transition ensures that the component can evenly contact the sealing part when tightened, reducing the risk of sealing failure due to local stress concentration, thereby forming a multi-pass sealing design of the tightening structure together with the waterproof retaining edge and the first end face.

[0025] 3. In this application, the fastening structure simplifies the assembly process through an integrated design, reduces the reliance on additional fasteners, thereby reducing the complexity and time of assembly and improving production efficiency. At the same time, it reduces the performance degradation caused by loose fasteners in traditional fastening methods and improves the durability of the overall structure.

[0026] 4. In this application, the clamping part adopts a hollow structure design, which helps to reduce the weight of the overall component and directly reduces the production cost by reducing the use of materials. At the same time, a reinforcing rib structure is set on the inner wall of the clamping part, which significantly improves the bearing capacity and anti-deformation performance of the clamping part by increasing the local thickness and rigidity in the key area, thereby enhancing the structural strength of the clamping part while avoiding unnecessary weight increase. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The preferred implementation scheme will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present application.

[0028] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0029] Figure 2 It is a schematic diagram of the overall structure of an embodiment of the present application from another perspective;

[0030] Figure 3is a side view of an embodiment of the present application;

[0031] Figure 4 is a schematic diagram of the assembly of a fastening structure in one embodiment of the present application at one viewing angle;

[0032] Figure 5 is a cross-sectional schematic diagram of an embodiment of the present application;

[0033] Figure 6 is a schematic structural diagram of a door module in one embodiment of the present application;

[0034] Figure 7 It is a schematic assembly diagram of a fastening structure in one embodiment of the present application at another viewing angle.

[0035] Description of the accompanying drawings: sealing portion 1; first end face 11; limiting rib 111; second end face 12; waterproof rib 121; connecting groove 122; annular guide surface 13; clamping portion 2; limiting step 21; locking surface 210; transverse plate 221; longitudinal plate 222; door module 3; first assembly hole 30; transition groove 31; limiting groove 32; body sheet metal 4; second assembly hole 40. DETAILED DESCRIPTION

[0036] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the specific implementation methods of the present application will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0037] In order to simplify the drawings, only the parts related to the application are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically drawn or marked. In this article, "one" not only means "only one", but also means "more than one".

[0038] It should be further understood that the term “and / or” used in the specification and appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0039] In this document, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0040] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0041] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0042] In the traditional field of component fastening, especially in the automotive manufacturing industry, the connection method between components plays a vital role in ensuring the stability and sealing of the vehicle structure. Usually, the fastening between components relies on bolts, screws or other fastening structures. Although these fastening structures can provide the necessary fixing effect, they also bring a series of problems.

[0043] First, the fastening methods using fastening structures such as bolts and screws are often complicated and require precise positioning and torque control, which not only increases the difficulty of assembly but also prolongs the production cycle. In addition, corrosion and loosening of fasteners are common problems, which may lead to a decrease in the strength of the connection and even cause safety problems.

[0044] Secondly, sealing is another key issue in component fastening. Especially in the connection between the door panel module and the inner sheet metal of the car, poor sealing may lead to the intrusion of moisture and dust, affecting the sound insulation and durability of the door, and may even cause electrical failure. Traditional sealing methods, such as using rubber gaskets or sealing strips, can provide sealing effects to a certain extent, but these materials are easily affected by environmental factors such as temperature changes, ultraviolet radiation, etc., which leads to a decrease in sealing performance.

[0045] Based on the above content, a fastening structure provided in the present application is intended to solve the above problems, which can not only simplify the fastening process but also provide a durable and reliable sealing effect.

[0046] Reference Manual Attached Figure 1 and Figure 2 The present application provides a fastening structure for relative fastening between two or more components, including a sealing portion 1 and a clamping portion 2 connected to each other.

[0047] It should be noted that in the simplest application scenario, the fastening structure is used to connect the first component to the second component. However, the application of the fastening structure in this application is not limited to two components, and its design concept is also applicable to the fastening of multiple components, including but not limited to the third component, the fourth component, etc.

[0048] In the specification, we will focus on the fastening principle between the first component and the second component as the basis for understanding the design of this structure. Through this basis, it can be inferred that in complex situations involving more components, the principle of this fastening structure is also applicable, and only the structure needs to be expanded and adapted accordingly.

[0049] Specifically, the sealing portion 1 has a first end face 11 and a second end face 12 disposed opposite to each other, wherein the first end face 11 is connected to the clamping portion 2, and the edge of the second end face 12 is bent outward to form a waterproof retaining edge 121. This design not only enhances the stability of the structure, but also effectively prevents the penetration of water through the waterproof retaining edge 121. The clamping portion 2 has a circumferentially extending limiting step 21, and the limiting step 21 and the sealing portion 1 are arranged to ensure that the first component and the second component are positioned between the limiting step 21 and the first end face 11.

[0050] When the first component and the second component are fastened, the first component is tightly against the waterproof retaining edge 121 and the first end face 11, and the first component first forms a first seal with the waterproof retaining edge 121, and then forms another seal with the first end face 11, and the two realize the sealing of the gap between the sealing part 1 and the first component. Such a sealing effect not only prevents the intrusion of moisture and other environmental factors, but also improves the reliability and durability of the component connection, effectively solves the problems of corrosion, looseness and insufficient sealing performance that may be caused by traditional fasteners, and reduces the complexity of assembly through a simplified fastening mechanism.

[0051] In addition, the waterproof rib 121 of the sealing part 1 can be adjusted according to the specific shape and size of the component to achieve a better sealing effect. The limiting step 21 of the clamping part 2 can be designed to be adjustable to adapt to components of different thicknesses and provide a wider range of applicability.

[0052] It should be noted that this fastening structure can be applied to a variety of different component connection scenarios. For example, in the field of automobile manufacturing, it can be used to connect the door module 3 with the body sheet metal 4, which not only improves the sealing and durability of the door, but also contributes to the lightweight design of the entire vehicle. In other industrial fields, such as machinery manufacturing, building structures or electronic equipment assembly, this fastening structure can also provide a stable and durable connection solution.

[0053] Furthermore, the action surface of the waterproof retaining edge 121 is arc-shaped. First, the arc-shaped action surface enables the waterproof retaining edge 121 to better adapt to the surface contour of the first component, providing a larger contact area, thereby forming a more uniform and tight seal between the first component and the sealing portion 1; on the other hand, during the fastening process, the arc-shaped action surface can first contact the first component, using the compliance of the arc to achieve initial positioning and pre-compression. At the same time, the design of the arc-shaped action surface also helps to reduce stress concentration during installation and extend the service life of the component.

[0054] Considering the requirements of different application scenarios, the waterproof retaining edge 121 of the arc-shaped action surface can be customized according to the specific shape of the component and the requirements of the installation position. For example, in applications requiring higher sealing performance, the curvature of the arc-shaped action surface can be increased to provide a stronger sealing effect.

[0055] Based on the above, the sealing part 1 and the clamping part 2 are integrally injection molded, which significantly improves the performance and reliability of the fastening structure. The integral molding of the sealing part 1 and the clamping part 2 ensures the precise fit between the two parts, eliminates the errors and defects that may occur in the traditional assembly method, and thus fundamentally improves the sealing and stability of the fastening structure. In addition, the integrally molded fastening structure also has significant advantages in cost control because it reduces the manpower, time and material consumption required for assembly.

[0056] In one embodiment, based on the above embodiment, the edge of the first end face 11 and the root of the waterproof rib 121 are transitioned through the annular guide surface 13, so that in the tightened state, the first component can evenly abut against the annular rib 121 and the annular guide surface 13. This progressive transition not only ensures the consistency of the seal, but also reduces local stress concentration by evenly distributing the contact pressure, thereby extending the service life of the sealing material and improving the reliability of the overall structure.

[0057] In addition, the provision of the annular guide surface 13 also simplifies the fastening process. The smooth transition reduces the resistance during installation, making it easier for the first component to form a tight fit with the sealing portion 1, while also reducing the risk of damage caused by improper installation, while improving production efficiency and reducing maintenance costs, because uniform sealing contact reduces the wear of the sealing material.

[0058] At the same time, the setting of the annular guide surface 13 also needs to consider the thickness of the sealing part 1 to ensure the best pressure distribution and sealing effect during the tightening process. The thickness of the sealing part 1 determines the extension length of the annular guide surface 13 in the thickness direction. A thicker sealing part 1 allows the design of a longer annular guide surface 13, which helps to provide a smoother transition between the edge of the first end face 11 and the root of the waterproof rib 121; on the contrary, if the sealing part 1 is thinner, the length of the annular guide surface 13 will also be shortened accordingly to adapt to the size of the sealing part 1. The thickness of the sealing part 1 can be adjusted according to specific application needs and design requirements to adapt to different tightening pressures and sealing requirements.

[0059] In one embodiment, the sealing portion 1 is designed to be conical. Specifically, the size of the first end face 11 is smaller than that of the second end face 12, and the first end face 11 and the second end face 12 are concentrically arranged. The conical profile design forms a gradually changing cross-sectional size of the sealing portion 1. This gradual transition from narrow to wide reduces the friction resistance during initial insertion and ensures the ultimate realization of a tight fit.

[0060] Specifically, during the assembly process, the sealing part 1 can slide into the assembly hole more smoothly due to its inclined annular guide surface 13. The initial smaller contact area reduces the force required for insertion, and as the sealing part 1 is further inserted, the larger second end surface 12 gradually contacts the first component, and a tight seal with the first component is achieved through the waterproof retaining edge 121. This design significantly reduces possible scratches or misalignments during the assembly process, and improves the accuracy and repeatability of assembly.

[0061] It should be noted that the design of the quasi-conical profile can be adjusted according to specific assembly requirements and aperture size to achieve optimal assembly performance. For example, in applications with higher requirements for assembly speed and sealing performance, the inclination angle and end face size of the quasi-conical profile can be optimized to provide faster assembly speed and better sealing effect.

[0062] In another embodiment, based on the above embodiment, the number of the limiting steps 21 is two, and the two limiting steps 21 are symmetrically distributed on the periphery of the clamping part 2 along the axial direction of the clamping part 2 to achieve uniform force distribution and structural balance.

[0063] Specifically, each limiting step 21 is connected to the outer periphery of the clamping portion 2 to form a pair of mutually mirrored support surfaces. When the first component and the second component are fastened, the two limiting steps 21 work together to firmly position the components between the sealing portion 1 and the limiting steps 21. At the same time, during the fastening process, the first component and the second component can be uniformly supported at two positions at the same time, so that the force of each component is more dispersed, reducing the stress concentration that may be generated at a single support point.

[0064] The symmetrically distributed limiting steps 21 significantly increase the number of supporting points of the component, thereby providing a more stable supporting structure. The advantage of this design is that the increase in supporting points allows the force to be more evenly distributed over the entire contact surface when the component is subjected to external force, effectively avoiding local stress concentration and reducing structural deformation or damage caused by uneven force. At the same time, the symmetrical limiting steps 21 also improve the accuracy and repeatability of assembly and provide a clear positioning reference for the component.

[0065] It should be noted that the design of the limiting step 21 can be further adjusted and optimized according to the specific application requirements of the component. For example, the size, shape and position of the limiting step 21 can be adjusted according to the weight of the component and the expected force conditions to ensure that each support point can provide sufficient bearing capacity. In addition, the step surface can be designed with a specific texture or coating to increase the friction coefficient with the component and further improve the stability of the support.

[0066] In one embodiment, Figure 1 and Figure 3 As shown, each of the above-mentioned limiting steps 21 is provided with a locking surface 210, so there are two locking surfaces 210 on the clamping part 2, and the directions of the two locking surfaces 210 are different. When the clamping part 2 rotates, the two locking surfaces 210 can respectively correspond to the preset positions on the second component, thereby achieving a more secure fastening effect.

[0067] The locking surface 210 on each limiting step 21 is designed as an inclined arc profile, extending smoothly from the top edge of the limiting step 21 to the bottom, so that the locking surface 210 can smoothly move along the surface of the second component when the clamping part 2 rotates, thereby achieving gradual locking. At the same time, the design of the inclined arc surface ensures that uniform pressure can be continuously provided during the rotation process until the preset locking position is reached. The two locking surfaces 210 face opposite directions, so that the clamping part 2 can achieve bidirectional locking on the second component, increasing the stability of the structure.

[0068] It can be understood that, through the cooperation of the locking surface 210 and the limiting step 21 in this embodiment, the present application solves the problems of inaccurate positioning and unreliable locking that may occur in the traditional fastening structure during the rotation positioning and locking process. The limiting step 21 provides the initial symmetrical support, while the locking surface 210 ensures that the clamping part 2 can smoothly transition to the locking position during the rotation process, thereby improving the overall stability and durability of the fastening structure.

[0069] In one embodiment, Figure 2As shown, the clamping part 2 adopts a hollow structure design, which reduces the use of materials and thus reduces the overall weight, and is particularly suitable for fields with high requirements for lightweight such as automobile manufacturing. On the inner wall of the clamping part 2, a reinforcing rib structure is provided to further enhance its stability.

[0070] Specifically, the reinforcing rib structure is composed of transverse plates 221 distributed transversely and longitudinal plates 222 distributed longitudinally, and these plates are staggered and fixed to form a strong grid structure. This grid layout not only optimizes the mechanical properties of the clamping part 2, but also improves its torsion and bending resistance, so that the clamping part 2 can effectively withstand forces from different directions and reduce deformation or damage caused by local force.

[0071] In addition, the design of the reinforcing rib structure allows adjustment according to specific stress conditions and performance requirements, such as changing the distribution density, size and shape of the transverse plate 221 and the longitudinal plate 222 to achieve the best support effect. In terms of material selection, high-strength steel or light alloy material can be selected according to cost and performance requirements, further improving the durability and reliability of the clamping part 2.

[0072] In one embodiment, the reference specification Figure 5 According to another aspect of the present application, the present application further provides a vehicle door assembly, comprising a vehicle door module 3, a vehicle body sheet metal 4 and the above-mentioned fastening structure. The fastening structure is used to firmly fix the vehicle door module 3 on the vehicle body sheet metal 4, wherein the vehicle door module 3 corresponds to the first component described above, and the vehicle body sheet metal 4 corresponds to the second component.

[0073] For further information, refer to the manual attached. Figure 6 and Figure 7 The door module 3 is provided with a first assembly hole 30, and the body sheet metal 4 is provided with a second assembly hole 40. Both sets of assembly holes are designed with a non-circular profile, which improves the accuracy of assembly and reduces assembly errors caused by the shape of the assembly holes. The clamping portion 2 of the fastening structure also adopts a non-circular profile to ensure matching with the first and second assembly holes 40.

[0074] During the fastening process, the clamping portion 2 first passes through the first assembly hole 30 on the door module 3 and the second assembly hole 40 on the body sheet metal 4 in sequence. Subsequently, under the operation of the user, the clamping portion 2 rotates, and this rotation causes a misalignment between the clamping portion 2 and the second assembly hole 40. This misalignment design limits the clamping portion 2 from coming out of the second assembly hole 40, thereby achieving a secure locking between the door module 3 and the body sheet metal 4.

[0075] In addition, the door module 3 and the body sheet metal 4 are precisely limited between the limiting step 21 of the clamping part 2 and the first end face 11 of the sealing part 1 when fastened. This double-sided clamping structure not only provides a stable support, but also effectively prevents the intrusion of external water vapor, impurities, etc. through the close fit of the sealing part 1, ensuring the sealing and durability of the door assembly.

[0076] Based on the above, the door assembly achieves a triple sealing effect through the sealing portion 1, which significantly improves the sealing and structural stability of the connection between the door module 3 and the body sheet metal 4.

[0077] The first seal is provided by the waterproof rib 121, whose outward bending design is conducive to establishing a preliminary barrier, effectively isolating external moisture and impurities from penetrating through the gap between the sealing part 1 and the door module 3. The annular guide surface 13 constitutes the second seal, which forms a close fit with the door module 3 during the rotation and tightening process of the clamping part 2, and the smooth transition further enhances the sealing effect. The direct contact between the first end face 11 and the door module 3 forms the third seal, ensuring that there is no gap in the structure after tightening, and achieving a stable sealing state. The effects of these three seals are superimposed on each other, which not only improves the waterproof performance of the door assembly, but also enhances the overall airtightness and dustproof ability.

[0078] Furthermore, corresponding limiting structures are provided on the door module 3 and the first end surface 11 of the sealing portion 1 to prevent circumferential deflection between the components after the tightening is completed. At the same time, the limiting structures can also play a certain stopping role, so that the tightening structure can stop rotating at a predetermined position, avoiding damage or deformation that may be caused by over-tightening, and also simplifying the assembly process, because the operator can clearly know that the tightening has reached an appropriate degree.

[0079] There are many related settings of the above-mentioned limit structure, such as Figure 2 and Figure 6 In the embodiment, a limiting rib 111 is provided on the first end face 11 of the sealing portion 1, and a transition groove 31 and a limiting groove 32 are correspondingly provided on the door module 3, thereby ensuring the precise fit between the door module 3 and the body sheet metal 4, and effectively preventing the circumferential deflection of the fastened components, while providing a clear stop position.

[0080] Reference Manual Attached Figure 4 , Figure 6 and Figure 7During the fastening process, the clamping portion 2 first passes through the first assembly hole 30 on the door module 3 and the second assembly hole 40 on the body sheet metal 4, and then the first end surface 11 of the sealing portion 1 contacts the door module 3. During the fastening process, the limiting rib 111 on the first end surface 11 first passes through the transition groove 31 on the door module 3, providing an initial guiding effect for the clamping portion 2, ensuring that the clamping portion 2 can smoothly rotate to a preset angle.

[0081] With further tightening, the limiting rib 111 is finally embedded in the limiting groove 32, and the limiting groove 32 provides a precise embedding position for the limiting rib 111. At this time, the cooperation between the limiting groove 32 and the limiting rib 111 not only prevents the further circumferential movement of the clamping part 2, but also ensures that the fastening structure stops rotating at a predetermined position.

[0082] In one embodiment, a connection groove 122 is provided at the center of the second end surface 12 of the sealing portion 1. The contour of the connection groove 122 is non-circular and is used to adapt to the connection operation tool, thereby ensuring the accuracy and reliability of the rotation operation.

[0083] Through the design of this embodiment, the operating tool can be matched with the connection groove 122, thereby providing a stable interface during the clamping process. The connection groove 122 with a non-circular profile not only provides a dedicated clamping point for the operating tool, but also effectively prevents incorrect installation or alignment of the tool through the specificity of its shape, greatly reducing the possibility of errors during the assembly process.

[0084] When the fastening operation is performed, the rotation of the operating tool can directly drive the clamping part 2, so that the clamping part 2 sequentially passes through the first assembly hole 30 on the door module 3 and the second assembly hole 40 on the body sheet metal 4. After the clamping part 2 reaches the predetermined position of the second assembly hole 40, the clamping part 2 is further rotated by the operating tool to form a misalignment with the second assembly hole 40, and automatic locking is achieved to prevent it from falling out.

[0085] It should be noted that the above embodiments can be freely combined as needed. The above are only preferred implementations of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application, and these improvements and modifications should also be regarded as the protection scope of the present application.

Claims

1. A fastening structure, characterized in that: Used for relative fastening between two or more components, including: a sealing part and a clamping part connected; The sealing portion comprises a first end face and a second end face which are arranged opposite to each other, the first end face is connected to the clamping portion, and the edge of the second end face is bent outward to form a waterproof retaining edge; The clamping portion has a limiting step extending along its circumferential portion. In a tightened state, all of the components are simultaneously limited between the limiting step and the first end face and are in a stacked state, and one of the components abuts against the waterproof rib to form a first seal, and abuts against the first end face to form another seal, so as to close the gap between the sealing portion and the component.

2. The fastening structure according to claim 1, characterized in that: The action surface of the waterproof retaining edge is arc-shaped; The edge of the first end face and the root of the waterproof retaining edge are transitioned through an annular guide surface, so that in a tightened state, the component can simultaneously abut against the active surface, the annular guide surface and the first end face to form a continuous seal.

3. The fastening structure according to claim 2, characterized in that: The size of the first end face is smaller than that of the second end face, and the first end face and the second end face are concentrically arranged, and the annular guide surface is inclined so that the sealing portion has a cone-like profile.

4. The fastening structure according to any one of claims 1 to 3, characterized in that: The number of the limiting steps is two, and the two limiting steps are symmetrically distributed on the outer periphery of the clamping part along the axial direction of the clamping part, so that the clamping part is in a "T" shape in vertical plane projection.

5. The fastening structure according to claim 4, characterized in that: Each of the limiting steps is provided with a locking surface, and the two locking surfaces are oriented in different directions; Each locking surface has an inclined arc profile, and the locking surface extends from the top edge of the limiting step to the bottom of the limiting step. The locking surface is used to correspond to a preset position on the pressing member when the clamping portion rotates.

6. The fastening structure according to claim 1, characterized in that: The clamping part is a hollow structure, and the inner wall of the clamping part is provided with a reinforcing rib structure, the reinforcing rib structure includes at least one transverse plate distributed laterally and at least one longitudinal plate distributed longitudinally, the transverse plates and the longitudinal plates are staggered and fixed to provide auxiliary reinforcement for the clamping part.

7. The fastening structure according to any one of claims 1 to 3, 5 and 6, characterized in that: The sealing portion and the clamping portion are integrally injection-molded.

8. A vehicle door assembly, characterized in that: include: Door modules; Body sheet metal; The fastening structure according to any one of claims 1 to 7 is used to fasten the door module and the body sheet metal.

9. The vehicle door assembly according to claim 8, characterized in that: The door module is provided with a first assembly hole, and the body sheet metal is provided with a second assembly hole, wherein the contours of the first assembly hole, the second assembly hole and the clamping portion are all non-circular contours; During tightening, the clamping portion passes through the first assembly hole and the second assembly hole in sequence, and rotates during operation, so that a misalignment is formed between the clamping portion and the second assembly hole to limit the clamping portion from coming out.

10. The vehicle door assembly according to claim 9, characterized in that: A connecting groove is provided at the center of the second end surface. The contour of the connecting groove is a non-circular contour and is used for clamping an operating tool, so that the clamping portion can be driven to rotate by rotating the operating tool.

Images