Vehicle door inner plate, vehicle door assembly and vehicle
By integrally molding the mounting part of the door inner panel with the panel body and connecting it with the reinforcement part, the problems of high door weight and cost are solved, achieving the effects of lightweighting and cost reduction, while improving the processing precision and assembly quality of the door inner panel.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG ZEEKR INTELLIGENT TECH CO LTD
- Filing Date
- 2025-05-07
- Publication Date
- 2026-04-28
AI Technical Summary
Existing vehicle doors are heavy and costly.
Design a door inner panel by integrally molding the mounting part with the panel body and setting reinforcement parts around the mounting part to improve the strength and rigidity of the mounting part and reduce material loss rate and processing cost.
This technology enables lightweighting of the door inner panel, reducing weight and cost, improving processing precision and assembly quality, enhancing the reliability of the connection between the mounting part and the inner panel, simplifying the production process, and expanding the freedom of styling design.
Smart Images

Figure CN224170775U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of vehicle technology, and more specifically, to door inner panels, door assemblies, and vehicles. Background Technology
[0002] Some known vehicle doors have technical issues that result in excessive weight and high cost. Utility Model Content
[0003] This application provides a door inner panel, a door assembly, and a vehicle to address the technical problems of heavy and costly vehicle doors in some known vehicles.
[0004] This application provides an inner door panel, including a panel body, multiple mounting portions and multiple reinforcing portions. The multiple mounting portions are integrally formed with the panel body, and the thickness of each of the multiple mounting portions is greater than the thickness of the panel body. The mounting portions are used to install vehicle accessories. The multiple reinforcing portions are connected to the panel body, and the reinforcing portions are connected to the corresponding mounting portions in their respective regions. The reinforcing portions are used to improve the strength of the corresponding mounting portions.
[0005] According to this application, the door inner panel, being integrally formed with multiple mounting parts, reduces material waste during processing and lowers the overall weight of the door inner panel, thereby improving its lightweight performance, reducing processing costs, decreasing the number of assembly parts in the door inner panel assembly, increasing integration, simplifying the production process, and enhancing dimensional control stability. This, in turn, improves processing precision and assembly quality between the door inner panel and the outer door panel. Furthermore, the integral forming of the mounting parts with the panel improves the reliability of the connection between the mounting parts and the inner panel. In addition, the integral forming method allows for a wider range of forming depths along the width of the vehicle, facilitating styling designs to meet diverse design requirements. Simultaneously, by increasing the thickness of the mounting parts and using reinforcing parts to connect the panel and mounting parts, the strength and rigidity of the mounting parts are synergistically improved, ensuring the reliability of the connection between the mounting parts and vehicle components.
[0006] In one possible implementation:
[0007] The plate includes a first surface and a second surface disposed opposite to each other; the plurality of mounting parts include a first mounting part, which protrudes from the second surface of the plate toward the first surface and is located at the corresponding second surface of the plate.
[0008] In one possible implementation:
[0009] The first mounting part includes a mounting wall and a connecting wall. The mounting wall is located on the side of the first surface away from the second surface. One end of the connecting wall is connected to the mounting wall, and the other end of the connecting wall protrudes from the first surface. The connecting wall surrounds and forms the groove.
[0010] In one possible implementation:
[0011] The plurality of reinforcing parts include a first reinforcing part, which is disposed in the groove and connected to the corresponding first mounting part.
[0012] In one possible implementation:
[0013] The plurality of reinforcing parts include a second reinforcing part, which is disposed on the first surface and connected to the first mounting part.
[0014] In one possible implementation:
[0015] The multiple reinforcing parts are integrally formed with the plate body.
[0016] In one possible implementation:
[0017] The plate includes a first surface and a second surface disposed opposite to each other; the plurality of reinforcing parts include a third reinforcing part, which protrudes from the first surface; the plurality of mounting parts also include a second mounting part, which protrudes from the side of the third reinforcing part opposite to the first surface.
[0018] In one possible implementation:
[0019] The plate includes a bottom wall and side walls, with the side walls surrounding the bottom wall; wherein...
[0020] The mounting part is connected to the bottom wall;
[0021] And / or, the mounting portion is connected to the side wall;
[0022] And / or, the mounting part is connected to the connection between the bottom wall and the side wall.
[0023] This application also provides a door assembly, including the aforementioned inner door panel and outer door panel. The outer door panel is connected to the inner door panel.
[0024] This application also provides a vehicle including the aforementioned door inner panel or the aforementioned door assembly. Attached Figure Description
[0025] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0026] Figure 1 This is a schematic diagram of the structure of a vehicle according to an embodiment of this application.
[0027] Figure 2 This is a cross-sectional structural schematic diagram of a door assembly according to an embodiment of this application.
[0028] Figure 3 This is a three-dimensional structural diagram of the inner panel of a car door according to an embodiment of this application.
[0029] Figure 4 This is a three-dimensional structural diagram of the inner door panel of an embodiment of this application from another perspective.
[0030] Figure 5 This is a partial structural diagram of a portion of the inner panel of a car door according to an embodiment of this application.
[0031] Figure 6 This is a cross-sectional structural diagram of a portion of the inner panel of a car door according to an embodiment of this application.
[0032] Figure 7 This is a three-dimensional structural diagram of the inner door panel of an embodiment of this application from another perspective.
[0033] Figure 8 for Figure 7 A magnified view of a portion of point II.
[0034] Figure 9 for Figure 3 A magnified view of a portion of point I in the middle.
[0035] Explanation of key component symbols:
[0036] 100% of the inner door panel
[0037] Board 10
[0038] Bottom wall 11
[0039] Side wall 12
[0040] Installation Department 20
[0041] First Installation Section 20a
[0042] Second Installation Section 20b
[0043] Third Installation Section 20c
[0044] Mounting wall 21
[0045] First section 211
[0046] Second wall section 212
[0047] Connecting wall 22
[0048] Strengthening Department 30
[0049] First Reinforcement Section 30a
[0050] Second Reinforcement Section 30b
[0051] Third Reinforcement Section 30c
[0052] First Strengthening Section 31
[0053] Second Strengthening Section 32
[0054] Third Strengthening Section 33
[0055] Mounting hole K
[0056] First edge L1
[0057] Second edge L2
[0058] Third edge L3
[0059] Fourth Edge L4
[0060] First surface P1
[0061] Second surface P2
[0062] Door assembly 200
[0063] Door outer panel 201
[0064] Vehicle 300
[0065] Body 301
[0066] Containment cavity Q
[0067] Containment slot C1
[0068] Groove C2
[0069] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this application. Detailed Implementation
[0070] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.
[0071] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. When a component is said to be "set on" another component, it can be directly set on the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.
[0072] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "or / and" as used herein includes any and all combinations of one or more of the associated listed items.
[0073] Some embodiments of this application are described in detail. Unless otherwise specified, the following embodiments and features can be combined with each other.
[0074] See Figure 1 and Figure 2 This embodiment provides a vehicle 300. The vehicle 300 includes a body 301 and a door assembly 200. The door assembly 200 is mounted on the body 301. The door assembly 200 can be a front door, a rear door, or a tailgate of the vehicle 300.
[0075] See Figure 2 The door assembly 200 includes an inner door panel 100 and an outer door panel 201. The outer door panel 201 is connected to the inner door panel 100. The outer door panel 201 faces outwards, while the inner door panel 100 faces inwards. A receiving cavity Q3 is formed between the outer door panel 201 and the inner door panel 100. The receiving cavity Q3 can be used to house vehicle accessories. Vehicle accessories include door hinges, window regulators, door limiters, and door locks. The specific structure of the vehicle accessories and the specific connection structure between the vehicle accessories and the door can be referenced from existing installation structures and will not be described in detail here.
[0076] Please see further. Figure 3 The inner door panel 100 includes a panel 10, multiple mounting portions 20, and multiple reinforcing portions 30. The mounting portions 20 are integrally formed with the panel 10. The thickness of each mounting portion 20 is greater than the thickness of the panel 10. The mounting portions 20 are used to mount vehicle accessories. The multiple reinforcing portions 30 are connected to the panel 10, and the reinforcing portions 30 are connected to corresponding mounting portions 20 in sections to improve the strength of the mounting portions 20.
[0077] According to the door inner panel 100 of this application, since the panel body 10 and multiple mounting parts 20 are integrally formed, the material loss rate during processing of the door inner panel 100 can be reduced, and the overall weight of the door inner panel 100 can be reduced, thereby improving the lightweight performance of the door inner panel 100, reducing the processing cost of the door inner panel 100, reducing the number of assembly parts of the door inner panel 100, increasing the integration of the door inner panel 100, simplifying the production process, and improving the dimensional control stability of the door inner panel 100, thereby improving the processing accuracy of the door inner panel 100 and improving the assembly quality of the door inner panel 100 and the door outer panel 201. At the same time, the integral forming of the mounting parts 20 with the panel body 10 can also improve the connection reliability between the mounting parts 20 and the inner panel. In addition, the integral forming processing method allows for a wide range of forming depths of the door inner panel 100 along the width direction of the vehicle 300, for example, the forming depth can be greater than 160mm, thereby facilitating the styling design of the door inner panel 100 and meeting different design requirements. At the same time, by increasing the thickness of the mounting part 20 and by connecting the plate 10 and the mounting part 20 through the reinforcing part 30, the strength and rigidity of the mounting part 20 can be improved in a coordinated manner, thereby ensuring the reliability of the mounting part 20 in connecting vehicle parts.
[0078] In addition, when vehicle parts shake, the vehicle parts will not cause the mounting part 20 to collide with the plate 10, thereby further alleviating the abnormal noise phenomenon of the door assembly 200.
[0079] The mounting sections 20 corresponding to the connections of the reinforcing sections 30 refer to the fact that each mounting section 20 is connected to several reinforcing sections 30. Some of the multiple reinforcing sections 30 may also be spaced apart from the mounting sections 20 to individually improve the strength of the plate 10. The placement of the reinforcing sections 30 can be determined using simulation methods such as topology optimization to ensure process feasibility and the reliability of the reinforcement provided by the reinforcing sections 30 to the mounting sections 20.
[0080] In some embodiments, the reinforcing part 30 is integrally formed with the plate 10. This further enhances the strengthening effect of the reinforcing part 30 on the mounting part 20, thereby improving the installation reliability of the mounting part 20. The inner door panel 100 can be integrally formed by die casting. In other embodiments, the plate 10 and the mounting part 20 can be integrally formed by die casting, and the reinforcing part 30 is then connected to the plate 10 and the mounting part 20 by threaded connections, welding, or other methods.
[0081] The inner door panel 100 can be made of aluminum alloy, which can both increase the strength of the inner door panel 100 and reduce its weight. In other embodiments, the inner door panel 100 can also be made of magnesium alloy.
[0082] Compared to known split-type door inner panels, the door inner panel 100 of this embodiment can be reduced in weight by approximately 30%, with a material utilization rate of over 90%. The depth of the door inner panel 100 along the width direction of the vehicle 300 can be increased by approximately 80%, thereby improving the freedom of design. Furthermore, due to the further simplification of the production process, the cost of mold and tooling equipment for the door inner panel 100 of this embodiment can be further reduced by approximately 25%, thereby reducing the production cost of the door inner panel 100.
[0083] In some embodiments, see Figure 3 The plate 10 includes a first edge L1, a second edge L2, a third edge L3, and a fourth edge L4 connected sequentially along its circumference. The first edge L1 and the third edge L3 are arranged opposite to each other, and the second edge L2 and the fourth edge L4 are arranged opposite to each other. Several reinforcing parts 20 may be provided at the first edge L1 to improve the strength of the plate 10 at the first edge L1, thereby facilitating the installation of a vehicle window at the first edge L1.
[0084] In some embodiments, see Figure 3 The panel 10 includes a bottom wall 11 and a side wall 12. The side wall 12 surrounds the bottom wall 11. A mounting portion 20 is connected to the bottom wall 11. And / or, the mounting portion 20 is connected to the side wall 12. And / or, the mounting portion 20 is connected at the junction of the bottom wall 11 and the side wall 12. A receiving groove C1 is formed between the side wall 12 and the bottom wall 11. The outer door panel cover 201 closes to the opening of the receiving groove C1 to form a receiving cavity Q with the panel 10. Several reinforcing portions 20 may be provided at the junction of the bottom wall 11 and the side wall 12 to improve the connection reliability of the bottom wall 11 and the side wall 12 and reduce the risk of bending.
[0085] In some embodiments, see Figure 3 The panel 10 includes a first surface P1 and a second surface P2 disposed opposite to each other. The first surface P1 is disposed facing the outer door panel 201. The second surface P2 is disposed away from the outer door panel 201.
[0086] In some embodiments, see Figure 3 and Figure 4 The plurality of mounting parts 20 include a first mounting part 20a, a second mounting part 20b, and a third mounting part 20c.
[0087] The panel 10 has several spaced-apart first mounting portions 20a near its first edge L1. The panel 10 also has several spaced-apart first mounting portions 20a near its third edge L3. All of these first mounting portions 20a are used to connect to a glass lifter. The first mounting portions 20a near the first edge L1 are located on the bottom wall 11. The first mounting portions 20a near the third edge L3 are located on the side wall 12.
[0088] The plate 10 has a first mounting part 20a near the second edge L2. The first mounting part 20a is used to connect the door limiter.
[0089] A second mounting portion 20b is provided near the fourth edge L4 of the plate 10. The second mounting portion 20b is used to connect the door lock. The second mounting portion 20b is located at the connection between the side wall 12 and the bottom wall 11.
[0090] The third mounting portion 20c is located on the plate 10 near the second edge L2. This third mounting portion 20c is used to connect the door hinge. Specifically, this third mounting portion 20c is located on the side wall 12.
[0091] In some embodiments, see Figure 3 A first mounting portion 20a is disposed on the first surface P1. The first mounting portion 20a protrudes from the second surface P2 of the plate 10 toward the first surface P1, and defines a groove C2 at the corresponding location on the second surface P2 of the plate 10. Thus, the protruding first mounting portion 20a facilitates the installation of vehicle accessories. Simultaneously, the first mounting portion 20a can extend from the first surface P1 into the receiving cavity Q, thereby not occupying space on the side of the plate 10 along the second surface P2, ensuring the integrity of the door assembly 200 on the interior space side, and thus ensuring the installation reliability of the interior trim. Furthermore, the groove C2 formed by the first mounting portion 20a further enhances the strength of the first mounting portion 20a, thereby improving the installation reliability of the vehicle accessories.
[0092] In some embodiments, see Figure 5 The first mounting part 20a includes a mounting wall 21 and a connecting wall 22. The mounting wall 21 is located on the side of the first surface P1 opposite to the second surface P2. One end of the connecting wall 22 is connected to the mounting wall 21, and the other end of the connecting wall 22 protrudes from the first surface P1 and is connected to the plate 10. The connecting wall 22 and the mounting wall 21 form a groove C2. In this way, the mounting wall 21 can provide a fixing plane for the vehicle parts to ensure the installation reliability of the vehicle parts.
[0093] Optionally, see Figure 5 and Figure 6 The first mounting part 20a has a mounting hole K. The mounting hole K is located in the mounting wall 21. Alternatively, the mounting hole K extends from the connecting wall 22 to the mounting wall 21. The shape of the mounting hole K can be circular, oblong, rectangular, racetrack-shaped, or irregular, etc.
[0094] In some embodiments, a portion of the connecting wall 22 of the first mounting portion 20a is disposed on the side wall 12, with a part of the connecting wall 22 connected to the side wall 12 and the other part of the connecting wall 22 connected to the bottom wall 11. Another portion of the connecting wall 22 of the first mounting portion 20a is disposed on the bottom wall 11, and the connecting wall 22 is spaced apart from the side wall 12. The mounting position of the first mounting portion 20a on the plate 10 can be adjusted according to the actual installation requirements of the vehicle parts; this embodiment does not specifically limit it.
[0095] In some embodiments, see Figure 5 The plurality of reinforcing parts 30 include a first reinforcing part 30a. The first reinforcing part 30a is disposed in the groove C2 and connected to the corresponding first mounting part 20a. In this way, the mounting space of the groove C2 can be fully utilized, while also providing reinforcement to the first mounting part 20a.
[0096] In some implementations, see Figure 5 The mounting hole K divides the mounting wall 21 into a first wall segment 211 and a second wall segment 212. The first mounting portion 20a is provided with two corresponding first reinforcing portions 30a. One first reinforcing portion 30a connects the first wall segment 211 and the connecting wall 22. The other first reinforcing portion 30a connects the second wall segment 212 and the connecting wall 22. The first reinforcing portion 30a may include several spaced reinforcing ribs. This ensures that the first reinforcing portion 30a does not interfere with the fit between the mounting hole K and the fastening structure, thereby ensuring the reliability of the connection between the first mounting portion 20a and the vehicle component.
[0097] In some implementations, see Figure 7 and Figure 8 The first reinforcing part 30a is connected to the mounting wall 21 along one side of its width direction. The two ends of the first reinforcing part 30a along its length direction are respectively connected to the opposite sides of the connecting wall 22. This improves the reinforcing effect of the first reinforcing part 30a on the first mounting part 20a. The first reinforcing part 30a may include a plurality of spaced reinforcing ribs.
[0098] In some embodiments, see Figure 9 The plurality of reinforcing parts 30 include a second reinforcing part 30b. The second reinforcing part 30b is disposed on the first surface P1 and connected to the first mounting part 20a. In this way, the second reinforcing part 30b can strengthen the connection between the first mounting part 20a and the plate 10. At the same time, the second reinforcing part 30b does not occupy the interior space of the second surface P2 on the side opposite to the first surface P1.
[0099] In some implementations, see Figure 9The second reinforcing part 30b connects the connecting wall 22 and the plate 10. The second reinforcing part 30b can provide support and reinforcement for the connecting wall 22, thereby improving the strength of the first mounting part 20a.
[0100] In some implementations, see Figure 9 The second reinforcing section 30b includes a first reinforcing section 31, a second reinforcing section 32, and a third reinforcing section 33. The first reinforcing section 31 connects one side of the plate 10 and the connecting wall 22. The second reinforcing section 32 connects the other side of the plate 10 and the connecting wall 22. The third reinforcing section 33 connects to the mounting wall 21, and also connects the first reinforcing section 31 and the second reinforcing section 32. This significantly enhances the reinforcing effect on the first mounting section 20a.
[0101] In some embodiments, there are multiple second reinforcing parts 30b. Multiple second reinforcing parts 30b are connected to the first mounting part 20a at intervals.
[0102] In some embodiments, please refer again Figure 4 The plurality of reinforcing portions 30 includes a third reinforcing portion 30c. The third reinforcing portion 30c protrudes from the first surface P1. The second mounting portion 20b protrudes from the side of the third reinforcing portion 30c opposite to the first surface P1. Thus, the third reinforcing portion 30c can further increase the thickness of the area where the second mounting portion 20b is located, thereby strengthening the second mounting portion 20b. In other embodiments, the second mounting portion 20b may also be connected to other first reinforcing portions 30a.
[0103] In some embodiments, the second mounting portion 20b has a mounting hole K. The mounting hole K penetrates the second mounting portion 20b, the third reinforcing portion 30c, and the plate 10.
[0104] The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the above preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solutions of this application should not depart from the spirit and scope of the technical solutions of this application.
Claims
1. A door inner panel, characterized in that, The device includes a plate, multiple mounting portions, and multiple reinforcing portions. The mounting portions are integrally formed with the plate, and the thickness of each mounting portion is greater than the thickness of the plate. The mounting portions are used to mount vehicle accessories. The reinforcing portions are connected to the plate, and the reinforcing portions are connected to the corresponding mounting portions in their respective areas. The reinforcing portions are used to improve the strength of the corresponding mounting portions.
2. The inner door panel according to claim 1, characterized in that: The plate includes a first surface and a second surface disposed opposite to each other; The plurality of mounting portions include a first mounting portion, which protrudes from a second surface of the plate toward a first surface and defines a groove at a corresponding second surface of the plate.
3. The inner door panel according to claim 2, characterized in that: The first mounting part includes a mounting wall and a connecting wall. The mounting wall is located on the side of the first surface away from the second surface. One end of the connecting wall is connected to the mounting wall, and the other end of the connecting wall protrudes from the first surface. The connecting wall surrounds and forms the groove.
4. The inner door panel according to claim 2, characterized in that: The plurality of reinforcing parts include a first reinforcing part, which is disposed in the groove and connected to the corresponding first mounting part.
5. The inner door panel according to claim 2, characterized in that: The plurality of reinforcing parts include a second reinforcing part, which is disposed on the first surface and connected to the first mounting part.
6. The inner door panel according to claim 1, characterized in that: The multiple reinforcing parts are integrally formed with the plate body.
7. The inner door panel according to claim 1, characterized in that: The plate includes a first surface and a second surface disposed opposite to each other; The plurality of reinforcing portions include a third reinforcing portion that protrudes from the first surface, and the plurality of mounting portions also include a second mounting portion that protrudes from the side of the third reinforcing portion opposite to the first surface.
8. The inner door panel according to any one of claims 1 to 7, characterized in that: The plate includes a bottom wall and side walls, with the side walls surrounding the bottom wall; wherein... The mounting part is connected to the bottom wall; And / or, the mounting portion is connected to the side wall; And / or, the mounting part is connected to the connection between the bottom wall and the side wall.
9. A door assembly, characterized in that, include: The inner door panel as described in any one of claims 1 to 8; The outer panel of the car door is connected to the inner panel of the car door.
10. A vehicle, characterized in that, Includes the door inner panel as described in any one of claims 1 to 8, or the door assembly as described in claim 9.