An automobile inner door panel, a door and an automobile

Abstract

The application relates to the technical field of automobile interiors, in particular to an automobile inner door panel, a vehicle door and an automobile. The automobile inner door panel comprises a door panel body, the door panel body comprises an annular frame part and a base plate fixedly connected to the annular frame part, the base plate is protruded to the outside of the automobile door to form a containing groove; the bottom of the annular frame part is arranged on the local notch of the containing groove close to the bottom side of the door, and the bottom of the annular frame part and the containing groove jointly form a map pocket structure; the groove bottom of the containing groove is provided with a soft covering in a large-area flat area, the soft covering comprises a covering body and a covering skin, the orthographic projection of the covering body and the covering skin overlaps on a plane parallel to the groove bottom of the containing groove, the covering skin is fixedly connected to one side of the covering body facing the inside of the automobile door, and the covering body is fixedly embedded in the groove bottom of the containing groove; the covering body is provided with a reinforcing framework rib on the side facing the outside of the automobile door; the material density of the door panel body is less than or equal to 1 g / cm3, the bending modulus is greater than or equal to 2000 MPa, and the thickness is 2 mm-2.2 mm.

Description

Technical Field

[0001] This application relates to the field of automotive interior technology, and more specifically, to an automotive interior door panel, a door, and an automotive. Background Technology

[0002] In the current rapid development of the automotive industry, lightweighting has a more significant impact on extending vehicle range and improving energy efficiency, becoming a crucial breakthrough for enhancing the competitiveness of new energy vehicles. As a vital component of the vehicle body, the structural design and material selection of commercial vehicle door panels directly affect the overall weight and performance of the vehicle. Existing commercial vehicle door panels mainly consist of the door panel body, the door pocket structure, the inner door handle assembly, and the upper door frame. Among these, the door panel body, the door pocket structure, and the upper door frame, due to their large area proportions, are the core structural components affecting the overall weight of the door panel. In existing technologies, these core structural components are mostly formed using PP material injection molding. Commonly available products of this type generally have a thickness ranging from 2.5-3mm and employ a uniform material thickness design.

[0003] However, the actual usage scenarios of commercial vehicle door panels have significantly different requirements for structural performance. Furthermore, to adapt to the overall vehicle shape and internal functional layout, the structure of the door panel is usually quite complex. The uniform material thickness design used in existing technologies fails to fully incorporate the differentiated design based on the actual performance requirements of different parts of the door panel. This results in performance redundancy in some areas with lower strength and stiffness requirements, not only causing significant waste of PP material and increasing production costs, but more importantly, it fails to effectively reduce the weight of the door panel, severely hindering the lightweight development of commercial vehicles, especially new energy commercial vehicles that are more sensitive to weight.

[0004] Given the shortcomings of existing commercial vehicle door panels in lightweight design, and the urgent need for weight control in new energy commercial vehicles, there is a pressing need to design a door panel structure that can fully combine material properties and structural innovation advantages, meet the actual use requirements of door panels, and achieve better lightweight effects, thereby promoting the development and application of lightweight technology in new energy commercial vehicles. Utility Model Content

[0005] In view of this, this application provides an automotive interior door panel, a door, and an automobile, aiming to improve the problem that existing automotive interior door panels, due to their uniform material thickness design, result in performance redundancy, material waste, and consequently low lightweighting.

[0006] In a first aspect, this application provides an automotive interior door panel, including a door panel body;

[0007] The door panel body is installed on the inside of the car door. The door panel body includes an annular frame and a base plate fixedly connected to the annular frame. The base plate protrudes outward to form a receiving groove, which extends from the bottom side of the car door to the middle area of ​​the door.

[0008] The bottom of the annular frame is covered by a partial groove near the bottom of the car door of the receiving groove, and the bottom of the annular frame and the receiving groove together form a map pocket structure.

[0009] The bottom of the receiving groove has a soft covering over a large flat area. The soft covering includes a covering body and a covering skin. On a plane parallel to the bottom of the receiving groove, the orthographic projections of the covering body and the covering skin overlap. The covering skin is fixedly connected to the side of the covering body facing the inside of the car door. The covering body is fixedly embedded in the bottom of the receiving groove. The covering body has a reinforcing skeleton on the side facing the outside of the car door.

[0010] The door panel body has a material density of ≤1g / cm3, a bending modulus of ≥2000MPa, and a thickness of 2mm-2.2mm.

[0011] Preferably, the annular frame portion is provided with a reinforcing groove protruding outwards from the car door, and the reinforcing groove is located in a local area where the rigidity of the annular frame portion is insufficient;

[0012] The substrate is provided with reinforcing ribs that protrude outwards from the car door, and the reinforcing ribs are located in local areas where the substrate has insufficient rigidity.

[0013] Preferably, the receiving groove is provided with a reinforcing protrusion, which is formed by the bottom of the receiving groove protruding towards the inside of the car door, and the bottom of the annular frame portion abuts against the reinforcing protrusion on the side facing the outside of the car door.

[0014] Preferably, the interior door panel of the car also includes a door handle cover plate, the top of the annular frame portion is provided with a connecting edge plate extending outward to the outside of the car door, the door handle cover plate is installed on the connecting edge plate, and the door handle cover plate is provided with a handle groove and an electrical appliance receiving groove.

[0015] Preferably, the interior door panel further includes an interior door latch assembly. A locking hole is provided between the top side of the base plate and the annular frame portion. The interior door latch assembly is installed within the locking hole. Both the base plate and the annular frame have protruding posts on the side facing away from the interior of the car door. The interior door latch assembly has mounting holes that are adapted to engage with the protruding posts. Preferably, the panel also includes an interior door latch assembly installed inside the annular frame portion and fixedly connected to the annular frame portion and the base plate.

[0016] Preferably, the door panel body is made of PP material, the door handle cover is made of ABS injection molded part, and the soft covering is made of leather material.

[0017] Preferably, the elastic modulus of the door panel body is ≥2000MPa and the Poisson's ratio is ≥0.4.

[0018] Preferably, the thickness of both the reinforcing skeleton and the soft covering is 2mm.

[0019] Secondly, this application provides a vehicle door, including an outer door panel and an inner door panel provided in the first aspect of this application.

[0020] Thirdly, this application provides an automobile, including the door provided in the second aspect of this application.

[0021] Compared with the prior art, the automotive interior door panel, door, and automotive provided in this application achieve at least the following beneficial effects:

[0022] The automotive interior door panel, door, and automotive components provided in this application are configured such that the density of the door panel material is limited to ≤1g / cm³. 3 This design achieves lightweighting of automotive door panels, effectively reducing overall vehicle weight and contributing to improved fuel economy and range. Simultaneously, it specifies a bending modulus ≥2000MPa and a thickness controlled between 2mm and 2.2mm. While significantly reducing material thickness (compared to traditional door panels), it ensures the door panel itself possesses the basic rigidity and structural stability required for use, avoiding substandard overall performance due to excessive lightweighting.

[0023] Furthermore, the substrate protrudes outwards from the door to form a receiving groove extending from the bottom of the door to the central area. Simultaneously, a partial opening of the receiving groove is covered at the bottom of the annular frame, together forming a map pocket structure. This creates a non-flat structure with a raised shape on the substrate, providing practical storage space for the user and combining structural reinforcement with storage functionality. A soft-touch covering is applied to a portion of the substrate's inner side of the door, enhancing both the user's tactile and operational comfort and aesthetics. On the other hand, the bottom of the receiving groove has weak structural strength in large, flat areas. When the soft covering is placed in this area, the surface of the covering body is covered by the covering skin. Therefore, there is no need to consider the surface quality of the plastic parts (i.e., the covering body) in the area covered by the soft covering. Based on this, the thickness design of the reinforcing skeleton of the covering body is not limited by surface quality and can be flexibly adjusted according to local stiffness requirements. By directly strengthening the large, flat areas of the receiving groove with insufficient stiffness through the reinforcing skeleton, the stiffness loss caused by the reduction in material thickness is further compensated. Moreover, since the reinforcing skeleton is located within the area covered by the soft covering, it will not affect the user experience. Thus, the synergy between "user experience optimization" and "local stiffness enhancement" is achieved, enabling the door panel to meet performance and lightweight requirements while also possessing practical functions and a good user experience.

[0024] Of course, any product implementing this application need not specifically need to achieve all of the technical effects described above at the same time.

[0025] Other features and advantages of this application will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0026] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present application and, together with their description, serve to explain the principles of the present application.

[0027] Figure 1 The image shown is a schematic diagram of the front structure of an automotive interior door panel provided in an embodiment of this application;

[0028] Figure 2 The diagram shown is a schematic diagram of the back structure of an automotive interior door panel provided in an embodiment of this application;

[0029] Figure 3 The figure shown is a three-dimensional structural diagram of an automotive interior door panel provided in an embodiment of this application;

[0030] Figure 4 The diagram shown is an exploded view (I) of the structure of an automotive interior door panel provided in an embodiment of this application;

[0031] Figure 5 The diagram shown is a schematic representation of the positional relationship between the reinforcing skeleton, the substrate, and the soft covering in an embodiment of this application.

[0032] Figure 6 As shown Figure 1 Schematic diagram of the CC section;

[0033] Figure 7 The image shown is an exploded view (II) of the structure of the automotive interior door panel provided in the embodiment of this application.

[0034] Explanation of reference numerals in the attached figures:

[0035] 100-Door panel body, 101-Lock hole, 102-Protruding post, 110-Annular frame, 112-Reinforcing groove, 113-Connecting edge plate, 120-Base plate, 121-Accommodation groove, 123-Reinforcing protrusion, 124-Sound hole, 125-Reinforcing rib, 130-Soft covering, 131-Covered body, 1311-Reinforcing skeleton rib, 132-Covered skin, 200-Door handle cover plate, 210-Electrical appliance receiving groove, 220-Handle groove, 300-Door inward opening handle assembly, 301-Assembly hole. Detailed Implementation

[0036] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present application.

[0037] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the scope of this application and its application or use.

[0038] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0039] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0040] Various modifications and variations can be made to this application without departing from its spirit or scope, which will be apparent to those skilled in the art. Therefore, this application is intended to cover modifications and variations falling within the scope of the corresponding claims (the claimed technical solutions) and their equivalents. It should be noted that the embodiments provided in this application can be combined with each other without contradiction.

[0041] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0042] Figure 1 The image shown is a schematic diagram of the front structure of an automotive interior door panel provided in an embodiment of this application. Figure 2 The diagram shown is a schematic representation of the back structure of an automotive interior door panel according to an embodiment of this application. Figure 3 The figure shown is a three-dimensional structural diagram of an automotive interior door panel provided in an embodiment of this application. Figure 4 The diagram shown is an exploded view (I) of the structure of an automotive interior door panel provided in an embodiment of this application. Figure 5 The diagram shown illustrates the positional relationship between the reinforcing skeleton, substrate, and soft covering in an embodiment of this application. Figure 6 As shown Figure 1 Schematic diagram of the CC section.

[0043] Please refer to Figures 1 to 6 This application provides an automotive interior door panel, including a door panel body 100.

[0044] The door panel body 100 is installed on the inside of the car door. The door panel body 100 includes an annular frame portion 110 and a base plate 120 fixedly connected in the annular frame portion 110. The base plate 120 protrudes outward from the car door to form a receiving groove 121. The receiving groove 121 extends from the bottom side of the base plate 120 to the middle area of ​​the base plate 120. The bottom of the annular frame portion 110 covers a partial groove of the receiving groove 121 near the bottom side of the car door, and the bottom of the annular frame portion 110 and the receiving groove 121 together form a map pocket structure.

[0045] The bottom of the receiving groove 121 has a soft covering 130 in a large flat area. The soft covering 130 includes a covering body 131 and a covering skin 132. On the plane parallel to the bottom of the receiving groove 121, the orthographic projections of the covering body 131 and the covering skin 132 overlap. The covering skin 132 is fixedly connected to the side of the covering body 131 facing the inside of the car door. The covering body 131 is fixedly embedded in the bottom of the receiving groove 121. The covering body 131 has a reinforcing skeleton rib 1311 on the side facing the outside of the car door.

[0046] The material density of the door panel body 100 is ≤1g / cm³. 3 The bending modulus is ≥2000MPa and the thickness is 2mm-2.2mm.

[0047] In the automotive interior door panel provided in this embodiment, the density of the door panel body material is limited to ≤1g / cm³. 3This design achieves lightweighting of automotive door panels, effectively reducing overall vehicle weight and contributing to improved fuel economy and range. Simultaneously, it specifies a bending modulus ≥2000MPa and a thickness controlled between 2mm and 2.2mm. While significantly reducing material thickness (compared to traditional door panels), it ensures the door panel body 100 possesses the basic rigidity and structural stability required for use, avoiding substandard overall performance due to excessive lightweighting.

[0048] Furthermore, the substrate 120 protrudes outwards from the door to form a receiving groove 121 extending from the bottom of the door to the central area. Simultaneously, the bottom of the annular frame portion 110 is covered with a partial opening of the receiving groove 121, together forming a map pocket structure. This creates a non-flat structure with a raised shape on the substrate 120, providing practical storage space for the user and combining structural reinforcement with storage functionality. A soft-coverage 130 is provided in a partial area on the inner side of the door, enhancing user comfort and aesthetics. On the other hand, the bottom of the receiving groove 121 has weak structural strength in a large flat area. The soft covering 130 is located in this area, and the surface of the covering body 131 is covered by the covering skin 132. Therefore, there is no need to consider the surface quality of the plastic parts (i.e., the covering body 131) in the area covered by the soft covering 130. Based on this, the thickness design of the reinforcing skeleton 1311 provided in the covering body 131 is not limited by surface quality and can be flexibly adjusted according to local stiffness requirements. By directly strengthening the large flat area where the receiving groove 121 lacks stiffness through the reinforcing skeleton 1311, the stiffness loss caused by the reduction in material thickness is further compensated. Furthermore, since the reinforcing skeleton 1311 is located within the area covered by the soft covering 130, it will not affect the user experience. Thus, a synergy between "user experience optimization" and "local stiffness enhancement" is achieved, enabling the door panel to meet performance and lightweight requirements while also possessing practical functions and a good user experience.

[0049] See also Figure 1 and Figure 2 In some embodiments, the annular frame portion 110 is provided with a reinforcing groove 112 protruding outwards from the car door, and the reinforcing groove 112 is located in a local area where the rigidity of the annular frame portion 110 is insufficient; the substrate 120 is provided with a reinforcing rib 125 protruding outwards from the car door, and the reinforcing rib 125 is located in a local area where the rigidity of the substrate 120 is insufficient.

[0050] It should be understood that the "reinforcing groove 112 is located in a local area of ​​insufficient stiffness in the annular frame portion 110" and the "reinforcing rib 125 is located in a local area of ​​insufficient stiffness in the substrate 120" can be obtained through finite element analysis. In specific implementation, CAE analysis software can be used.

[0051] In one specific implementation of this embodiment, such as Figure 2The reinforcing ribs 125 are distributed in a grid pattern, and their grid density can be adaptively configured according to the local structural strength of the substrate 120. That is, for areas of the substrate 120 with lower local structural strength, such as the bottom area of ​​the receiving groove 121, the grid density of the reinforcing ribs 125 is set to be larger; correspondingly, in areas of the substrate 120 with higher local structural strength, the grid density of the reinforcing ribs 125 is relatively smaller. Furthermore, the grid structure of the reinforcing ribs 125 is connected to the reinforcing skeleton ribs 1311 on the side of the covering body 131 facing the outer side of the car door, forming a mutually synergistic overall reinforcement system. This is beneficial to improving the overall structural rigidity and deformation resistance of the door panel body 100, and ensuring the structural stability of the car interior door panel during long-term use.

[0052] In this embodiment, the annular frame portion 110 is provided with a reinforcing groove 112 protruding outward of the car door in a local area where the rigidity is insufficient, and the substrate 120 is provided with a reinforcing rib 125 protruding outward of the car door in a local area where the rigidity is insufficient. This can enhance the bending rigidity of the local weak areas of the annular frame portion 110 and the substrate 120, and make up for the rigidity loss caused by the reduction of material thickness in the local area where the rigidity is insufficient.

[0053] See Figure 3 and Figure 4 In some embodiments, the receiving groove 121 is provided with a reinforcing protrusion 123, which is formed by the bottom of the receiving groove 121 protruding towards the inside of the car door, and the bottom of the annular frame portion 110 abuts against the reinforcing protrusion 123 on the side facing the outside of the car door.

[0054] In this embodiment, by "the bottom of the receiving groove 121 protruding towards the inside of the door to form a reinforcing protrusion 123", it is equivalent to forming a "rib-like support structure" at the bottom of the groove, which can significantly improve the local rigidity and bending resistance of the receiving groove 121, and can effectively bear the weight of books, tools and other items placed inside the map pocket structure. The reinforcing protrusion 123 can also divide the map pocket structure into multiple chambers of different sizes, such as a cup holder chamber and a miscellaneous storage chamber. In addition, the bottom of the annular frame portion 110 abuts against the reinforcing protrusion 123 on one side of the outer side of the door. The reinforcing protrusion 123 provides a certain support for the bottom of the annular frame portion 110. The load borne by the bottom of the annular frame portion 110 (such as the vibration load when the door is opened and closed, and the lateral force of the object being squeezed) can be transferred to the reinforcing protrusion 123, and then distributed to the entire receiving groove 121 through the reinforcing protrusion 123, avoiding local stress concentration and realizing load distribution. This can reduce the stress on the connection between the annular frame portion 110 and the substrate 120, reduce the risk of cracking and falling off of the connection, and extend the service life of the map pocket structure.

[0055] Furthermore, the reinforcing protrusion 123 is formed directly from the bottom of the receiving groove 121, without the need for additional independent reinforcing components (such as metal support plates). It can be integrally formed with the receiving groove 121 and the substrate 120 (such as injection molding), which not only reduces the number of parts and lowers the assembly cost, but also achieves efficient reuse of materials and avoids the weight and cost redundancy caused by additional materials.

[0056] See Figure 3 and Figure 4 In some embodiments, the interior door panel of the car also includes a door handle cover 200. The top of the annular frame portion 110 is provided with a connecting edge plate 113 extending outward to the outside of the car door. The door handle cover 200 is installed on the connecting edge plate 113. The door handle cover 200 is provided with a handle groove 220 and an electrical appliance receiving groove 210.

[0057] In this embodiment, the door handle cover 200 is installed on the connecting edge plate 113, thus integrating the door handle cover 200 into the door panel body 100. The handle groove 220 and the electrical appliance receiving groove 210 can be directly used as the force application point for closing the door, eliminating the need for an additional mechanical handle, reducing parts and assembly steps, and conforming to the curvature of the hand to avoid slipping or discomfort. The cavities of the handle groove 220 and the electrical appliance receiving groove 210 can hold small items such as mobile phones and cards. The storage area overlaps with the operation area, without occupying other space in the inner door panel, allowing drivers and passengers to easily access and place items, thus improving driving safety.

[0058] Figure 7 The image shown is an exploded view (II) of the structure of an automotive interior door panel provided in an embodiment of this application. See also... Figure 7 In some embodiments, the interior door panel of the car also includes an interior door handle assembly 300. A locking hole 101 is provided between the top side of the base plate 120 and the annular frame portion 110. The interior door handle assembly 300 is installed in the locking hole 101. The base plate 120 and the annular frame 110 are both provided with protruding posts 102 on the side away from the interior side of the car door. The interior door handle assembly 300 is provided with mounting holes 301, and the mounting holes 301 are adapted to engage with the protruding posts 102.

[0059] In this embodiment, a locking hole 101 is provided between the top side of the substrate 120 and the annular frame portion 110. The locking hole 101 provides installation space and a mounting reference for the door interior door handle assembly 300, eliminating the need for additional holes in the door panel body 100. This avoids positional misalignment of the door interior door handle assembly 300 during assembly, thus integrating the door interior door handle assembly 300 into the door panel body 100. Simultaneously, the door interior door handle assembly 300 engages with the protruding post 102 through the matching mounting hole 301, forming a bidirectional multi-point positioning structure. This improves the installation accuracy and structural stability of the door interior door handle assembly 300, preventing loosening or displacement during long-term use.

[0060] Furthermore, the matching snap-fit ​​structure between the protruding post 102 and the mounting hole 301 eliminates the need for complex bolt connections or welding processes, allowing for fixation solely through snap-fit. This simplifies assembly steps, reduces assembly difficulty, and improves the overall production and assembly efficiency of the door panel. Moreover, since the interior door handle assembly 300 is a key functional component subjected to high-frequency forces, it is physically connected to the core structure of the door panel body 100 (annular frame 110, base plate 120) through the locking hole 101. The snap-fit ​​structure between the protruding post 102 and the mounting hole 301 further transmits the force to the annular frame 110 and base plate 120. This effectively absorbs the tensile force borne by the interior door handle assembly 300 during door opening and distributes the stress to the overall structure of the door panel body 100, preventing structural damage caused by localized stress concentration and significantly improving the reliability of the interior door handle assembly 300 and the door panel body 100 in coordinating force distribution.

[0061] In some embodiments, the elastic modulus of the door panel body is ≥2000MPa, and the Poisson's ratio is ≥0.4. This further ensures the material's ability to resist elastic deformation, providing support for overall stiffness; a Poisson's ratio ≥0.4 makes the lateral deformation of the door panel more pronounced under stress, helping to distribute stress evenly and reduce local stress concentration; this parameter, combined with the structural design of the reinforcing groove and reinforcing skeleton rib 1311, effectively compensates for the lack of stiffness that may result from material thickness reduction; at the same time, it ensures that the door panel maintains shape stability during long-term use, reducing fatigue damage caused by repeated stress; ultimately, while meeting the requirements for lightweighting, it improves the structural stability and service life of the door panel, ensuring reliability in use.

[0062] In some embodiments, the door panel body 100 is made of PP material, the door handle cover 200 is an ABS injection molded part, and the soft covering 130 is made of leather material. The door panel body 100 is made of PP material, which fully meets its lightweight requirements (density ≤1g / cm³). 3To meet the requirements of basic stiffness (flexural modulus ≥ 2000MPa), the overall structural performance of the door panel and the weight reduction target are guaranteed. The door handle cover 200 is made of ABS injection molding. Thanks to the good molding precision and surface texture of ABS material, it can accurately fit the structural requirements of the handle groove and electrical component housing, ensuring smooth handle operation and stable installation of electrical components, while also enhancing the appearance of the door handle cover 200. The reasonable combination of the two materials allows both the door panel body 100 and the handle cover 200 to leverage their respective material advantages, and achieves structural and functional synergy through complementary performance, reducing overall manufacturing costs, extending component lifespan, and further improving the overall practicality and user experience of the automotive interior door panel. The leather material offers a comfortable, textured feel and is easy to clean. Using leather as the soft-covering material 130 enhances the overall quality of the interior and reduces the difficulty of daily maintenance for users. The leather material has good structural stability and can stably cover the orthographic projection area of ​​the reinforcing skeleton 1311 on the substrate 120. It does not affect the reinforcing skeleton 1311's effect on the local rigidity of the substrate 120, and can further optimize the user experience and visual effect of the inner side of the door panel through its own material characteristics.

[0063] In some embodiments, the thickness of both the reinforcing skeleton 1311 and the covering body 131 is 2 mm.

[0064] In this embodiment, the reinforcing skeleton 1311 and the covering body 131 are designed with the same thickness to avoid structural stress concentration caused by thickness differences. This makes the connection interface between the covering body and the reinforcing skeleton more uniformly stressed, enhances the bonding strength between the two, reduces the risk of peeling and loosening during long-term use, and ensures the overall stability of the soft covering 130 structure. The 2mm thickness design works in synergy with the overall thickness of the door panel body 100 (2mm-2.2mm). This avoids local weight increase caused by excessive thickness of the reinforcing skeleton 1311 (meeting the lightweight design goal of the door panel body), and the structural design with the same thickness as the covering body 131 allows the reinforcing skeleton to fully play its supporting role. Without increasing material consumption, the thickness matching achieves the dual function of "the covering body 131 bearing the load + the reinforcing skeleton 1311 strengthening the structure", ensuring that the soft covering 130 area meets the lightweight requirements while having sufficient resistance to deformation.

[0065] Based on the same inventive concept, this application also provides a car door. The car door includes an outer door panel and an inner door panel provided in any of the above embodiments. The inner door panel is adapted and assembled with other components of the car door (such as the outer door panel, window lifting mechanism, etc.) to form a complete car door structure. The car door provided in this application, because it integrates the aforementioned inner door panel, possesses all the beneficial effects of the inner door panel, such as lightweight, high rigidity, local structural reinforcement, superior user comfort, and high functional integration. For specific details regarding the beneficial effects of the inner door panel, please refer to the detailed descriptions of the inner door panel in the above embodiments; these details will not be repeated here.

[0066] In some embodiments, a vehicle speaker assembly is installed between the inner door panel and the outer door panel. To ensure that the sound emitted by the speaker assembly can efficiently penetrate the inner door panel and be transmitted into the cabin, the substrate 120 of the inner door panel has a sound-permeable hole 124 at a position corresponding to the speaker assembly. The sound-permeable hole 124 can significantly reduce the energy loss of sound when it penetrates the substrate 120, thereby effectively improving the sound penetration rate and ensuring the listening experience in the cabin.

[0067] Based on the same inventive concept, this application also provides an automobile. The automobile includes the door provided in the above embodiments, and the door is assembled in conjunction with the automobile's body frame, chassis system, etc., to meet the overall usage requirements of the automobile.

[0068] It is understood that the vehicle model provided in this application embodiment is not specifically limited, and may include various vehicles that require doors, such as vans, tractor-trailers, and vehicle-mounted modular units; regardless of the vehicle model, as long as the door in the above embodiments is used, it falls within the protection scope of this application. The vehicle provided in this application embodiment, because it is equipped with the aforementioned door, possesses all the beneficial effects of the door, and thus indirectly possesses the beneficial effects of the aforementioned vehicle inner door panel; for the specific details of the beneficial effects of the door and vehicle inner door panel, please refer to the detailed descriptions of the door and vehicle inner door panel in the above embodiments, which will not be repeated here.

[0069] While specific embodiments of this application have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of this application. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of this application. The scope of this application is defined by the appended claims.

Claims

1. A car interior door panel, characterized in that, Including the door panel itself; The door panel body is installed on the inside of the car door. The door panel body includes an annular frame and a base plate fixedly connected to the annular frame. The base plate protrudes outward to form a receiving groove, which extends from the bottom side of the car door to the middle area of ​​the door. The bottom of the annular frame is covered by a partial groove near the bottom of the car door of the receiving groove, and the bottom of the annular frame and the receiving groove together form a map pocket structure. The bottom of the receiving groove has a soft covering over a large flat area. The soft covering includes a covering body and a covering skin. On a plane parallel to the bottom of the receiving groove, the orthographic projections of the covering body and the covering skin overlap. The covering skin is fixedly connected to the side of the covering body facing the inside of the car door. The covering body is fixedly embedded in the bottom of the receiving groove. The covering body has a reinforcing skeleton on the side facing the outside of the car door. The material density of the door panel body is ≤1g / cm³. 3 The bending modulus is ≥2000MPa and the thickness is 2mm-2.2mm.

2. The automotive interior door panel as described in claim 1, characterized in that, The annular frame portion is provided with a reinforcing groove that protrudes outward toward the outside of the car door, and the reinforcing groove is located in a local area where the rigidity of the annular frame portion is insufficient. The substrate is provided with reinforcing ribs that protrude outwards from the car door, and the reinforcing ribs are located in local areas where the substrate has insufficient rigidity.

3. The automotive interior door panel as described in claim 1, characterized in that, The receiving groove is provided with a reinforcing protrusion, which is formed by the bottom of the receiving groove protruding towards the inside of the car door, and the bottom of the annular frame portion abuts against the reinforcing protrusion on the side facing the outside of the car door.

4. The automotive interior door panel as described in claim 1, characterized in that, It also includes a door handle cover plate, the top of the annular frame portion is provided with a connecting edge plate extending outward to the outside of the car door, the door handle cover plate is installed on the connecting edge plate, and the door handle cover plate is provided with a handle groove and an electrical appliance receiving groove.

5. The automotive interior door panel as described in claim 1, characterized in that, It also includes a door opening handle assembly, wherein a locking hole is provided between the top side of the base plate and the annular frame, the door opening handle assembly is installed in the locking hole, the base plate and the annular frame are provided with protruding posts on the side away from the inside of the car door, the door opening handle assembly is provided with mounting holes, and the mounting holes are adapted to engage with the protruding posts.

6. The automotive interior door panel as described in claim 3, characterized in that, The door panel body is made of PP material, the door handle cover is made of ABS injection molding, and the soft covering is made of leather material.

7. The automotive interior door panel as described in claim 1, characterized in that, The elastic modulus of the door panel body is ≥2000MPa and the Poisson's ratio is ≥0.

4.

8. The automotive interior door panel as described in claim 1, characterized in that, The thickness of both the reinforcing skeleton and the covering body is 2mm.

9. A vehicle door, characterized in that, The outer door panel and the inner door panel of the vehicle as described in any one of claims 1 to 8.

10. A car, characterized in that, Including the vehicle door as described in claim 9.

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