Vehicle door inner plate modal frame beam design structure

Abstract

The utility model discloses a modal frame beam design structure of a vehicle door inner plate, a structural beam and a peripheral beam (2) are arranged on the inner side of the vehicle door inner plate (1), the structural beam is connected with the peripheral beam (2), and a frame (3) arranged along the edge of the vehicle door inner plate (1) is arranged in the vehicle door inner plate (1); structural area division is carried out on the integrally-stamped automobile door inner plate (1), each structural beam has a certain width design, the section rigidity is improved, particularly the width and depth of the longitudinal structural beam are improved, the frame structural performance of the automobile door inner plate (1) is improved more effectively, and the structural performance of the automobile door inner plate (1) is improved through transition connection of joints of the structural beams and extension and fairing design of the structural beams. And stress concentration is avoided, so that the structural stability of the vehicle door inner plate (1) is formed, accessories on the vehicle door are effectively supported, the bending resistance and torsion resistance of the vehicle door inner plate (1) are improved, and the overall improvement of the bending mode and the torsional rigidity of the vehicle door is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of vehicle door technology. Specifically, this utility model relates to a design structure of a modal frame beam for the inner panel of a vehicle door. Background Technology

[0002] With the development of automotive intelligence, car door functions are becoming increasingly rich, and the requirements for overall vehicle NVH performance are also constantly increasing. The structural performance of car doors urgently needs to be improved. As the main body of the car door component, the design structure of the inner door panel varies greatly from model to model, and its structural performance cannot be optimized. The design of the car door structure is subject to the requirements of styling and accessory layout. It is extremely important to achieve the best design of the structural performance of the car door. In particular, with the increasing demand of customers for the quality of the car door's user experience, the modal and stiffness performance of the inner door panel is an important indicator to ensure the quality of the car door and is also the foundation of the car door structure.

[0003] A patent specification published on March 26, 2024, with patent number 202321790648.4, discloses a door inner panel structure, including a main body and an inner panel mounting plate. The main body is fixedly connected to the outer panel, providing a frame and sealing function. The inner panel mounting plate is fixedly connected to the main body and includes a bus-specific module and a van-specific module. The bus-specific module has a window regulator mounting section for installing a window regulator and enhancing structural strength through the window regulator. The van-specific module enhances the modality of the inner panel and adds protrusions to the outer panel to improve its local dent resistance. Through a modular approach, the structures affecting the installation of the bus window regulator, the van-specific inner panel modality enhancement structure, and the outer panel dent resistance structure are designed independently, with separate tooling. During use, the appropriate tooling can be selected to manufacture the corresponding modules as needed, maximizing the versatility of the inner panel and reducing tooling investment.

[0004] With the development of lightweight vehicle body design, lightweighting remains an important design indicator for both fuel-powered and new energy vehicles. To achieve lightweight design of door structures, some aluminum alloy materials have been used in actual vehicles. However, for steel doors, it is necessary to achieve lightweight design while improving modal stiffness and overall door performance. In order to meet the stamping process requirements, high elongation is used in the inner steel plate of the door. At the same time, in order to achieve lightweighting, the thickness is getting thinner and thinner. Using thick steel plates to meet the modal stiffness performance is not the optimal design. Even if local reinforcement plate structures are used, it will still lead to an increase in weight. Utility Model Content

[0005] The present invention aims to provide a door inner panel modal frame beam design structure that achieves lightweighting while ensuring door strength.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a modal frame beam design structure for an inner door panel, wherein a structural beam and a peripheral beam are provided on the inner side of the inner door panel, the structural beam is connected to the peripheral beam, and a frame is provided inside the inner door panel along the edge of the inner door panel.

[0007] The frame is distributed along the edge of the inner panel of the door, and the structural beam and the peripheral beam are located inside the frame.

[0008] The peripheral beam is U-shaped, and the structural beam includes a window frame structural beam. The window frame structural beam is horizontal and located at the opening of the peripheral beam. Both ends of the window frame structural beam are connected to the ends of the peripheral beam.

[0009] The structural beam also includes a structural convex beam and a structural concave beam, which are disposed between the window frame structural beam and the peripheral beam.

[0010] The structural protruding beam and the structural concave beam are vertical. The top end of the structural protruding beam is connected to the window frame structural beam, and the bottom end of the structural protruding beam is connected to the peripheral beam. The top end of the structural concave beam is connected to the window frame structural beam, and the bottom end of the structural concave beam is connected to the peripheral beam.

[0011] The convex beam and the concave beam of the structure are adjacent.

[0012] The concave beam of the structure is elongated, and the convex beam of the structure is crescent-shaped.

[0013] The peripheral beams are set along the inner side of the frame.

[0014] The technical effects of this utility model are as follows: by connecting the joints of each structural beam and designing the extension and smoothness of the structural beams, stress concentration is avoided, thereby forming structural stability of the inner panel of the car door and providing effective support for the upper accessories of the car door, improving the bending and torsional resistance of the inner panel of the car door, and realizing the overall improvement of the bending mode and torsional stiffness of the car door. Attached Figure Description

[0015] This manual includes the following figures, which illustrate the following:

[0016] Figure 1 This is a structural schematic diagram of a modal frame beam design structure for an inner panel of a car door according to the present invention;

[0017] Figure 2 for Figure 1 A schematic diagram of the X-direction section of the inner panel of a car door with a modal frame beam design structure;

[0018] Figure 3 for Figure 1 A schematic diagram of the Z-direction section of the inner panel of a car door, representing a modular frame beam design structure for the inner panel.

[0019] The markings in the diagram are: 1. Inner door panel; 2. Peripheral beam; 3. Frame; 4. Window frame structural beam; 5. Structural protruding beam; 6. Structural concave beam. Detailed Implementation

[0020] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, in order to help those skilled in the art to have a more complete, accurate and in-depth understanding of the utility model concept and technical solution, and to facilitate its implementation.

[0021] Please see Figure 1-3 A modular frame beam design structure for a car door inner panel is disclosed. The inner side of the car door inner panel 1 is provided with a structural beam and a peripheral beam 2, which are connected to each other. A frame 3 is provided along the edge of the car door inner panel 1. By dividing the integrally stamped car door inner panel 1 into structural areas, the peripheral beam 2 and the structural beam of the car door inner panel 1 constitute the entire frame beam structure of the car door inner panel 1. Each structural beam has a certain width design to improve the cross-sectional stiffness. In particular, the width and depth of the longitudinal structural beams are more effective in improving the frame structure performance of the car door inner panel 1. Through the transition connection of the joints of each structural beam, the extension and smooth design of the structural beams avoid stress concentration, thereby forming the structural stability of the car door inner panel 1 and providing effective support for the upper accessories of the car door, improving the bending and torsional resistance of the car door inner panel 1, and realizing the overall improvement of the bending mode and torsional stiffness of the car door.

[0022] The frame 3 is distributed along the edge of the inner door panel 1, and the structural beam and peripheral beam 2 are located inside the frame 3. The frame 3 is used to improve the outer edge strength of the inner door panel 1, while the structural beam and peripheral beam 2 are distributed inside the frame 3 to improve the structural strength of the inner side of the inner door panel 1 without the protection of the frame 3.

[0023] The peripheral beam 2 is U-shaped, and the structural beam includes the window frame structural beam 4, which is horizontal and located at the opening of the peripheral beam 2. Both ends of the window frame structural beam 4 are connected to the ends of the peripheral beam 2. The peripheral beam 2 and the window frame structural beam 4 are connected to form a U-shaped structure, which improves the frame strength of the inner side of the door inner panel 1.

[0024] The structural beams also include a convex structural beam 5 and a concave structural beam 6, which are positioned between the window frame structural beam 4 and the peripheral beam 2. The use of the two convex and concave structural beams can effectively improve the structural performance of the door inner panel 1 frame.

[0025] The structural protruding beam 5 and the structural concave beam 6 are vertical. The top of the structural protruding beam 5 is connected to the window frame structural beam 4, and the bottom of the structural protruding beam 5 is connected to the peripheral beam 2. The top of the structural concave beam 6 is connected to the window frame structural beam 4, and the bottom of the structural concave beam 6 is connected to the peripheral beam 2. The longitudinal structural beam runs through the middle of the inner door panel 1 and connects the peripheral beam 2 and the window frame structural beam 4 together, connecting all the structural beams and the peripheral beam 2 together to form an integral frame, improving the overall strength of the inner door panel 1. Furthermore, due to the structural protruding beam... The structural beams 5 and 6 are located in the middle of the door, which can effectively increase the strength of the middle part of the inner door panel 1. Since the peripheral beams 2 and the window frame structural beams 4 are distributed at the edge of the inner door panel 1, by covering the middle with two vertical structural beams, namely the structural convex beam 5 and the structural concave beam 6, both of which have a certain width, the middle part of the inner door panel 1 can be covered as much as possible, which can effectively improve the vertical structural strength of the middle part of the inner door panel 1. Furthermore, the adjacent concave and convex structures can improve the lateral structural strength of the inner door panel 1.

[0026] The structural convex beam 5 and the structural concave beam 6 are adjacent; the adjacent concave-convex design can effectively improve the lateral structural strength and prevent lateral deformation through the wavy structural form of the concave-convex shape.

[0027] The concave structural beam 6 is long and narrow, while the convex structural beam 5 is crescent-shaped. By setting adjacent structural beams in different shapes, they can complement each other and reduce the risk of damage. Since there is a slot in the inner panel 1 of the door for installing other equipment structures, the crescent-shaped convex structural beam 5 can reasonably avoid this slot. The arc-shaped edge of the convex structural beam 5 is set along the edge of this slot and fits together, which can effectively protect the edge strength of the slot and reduce the occurrence of breakage.

[0028] Peripheral beam 2 is set along the inner side of frame 3; peripheral beam 2 and frame 3 cooperate with each other to improve the edge strength of the inner door panel 1; the combination of peripheral beam 2 and frame 3 complement each other to improve the structural strength of the lower half of the inner door panel 1. Since the main equipment structure inside the door is located in the lower half of the door, the width of the structural beam is objectively increased through the double protection of peripheral beam 2 and frame 3, effectively ensuring the structural strength of the lower half of the inner door panel 1, reducing the degree of deformation of the lower half of the inner door panel 1 in the event of an accident, and ensuring the normal use of the door as much as possible.

[0029] The technical effect of this utility model is as follows: by connecting the joints of each structural beam and designing the extension and smoothness of the structural beams, stress concentration is avoided, thereby forming structural stability of the inner panel 1 of the car door and providing effective support for the upper accessories of the car door, improving the bending and torsional resistance of the inner panel 1 of the car door, and realizing the overall improvement of the bending mode and torsional stiffness of the car door.

[0030] By dividing the inner door panel 1 into structural beams, the arrangement of accessories on the door can be used as a reference. The arrangement of accessories, combined with the main frame beam structure of the inner door panel 1, supports each other and effectively ensures the frame beam structure design scheme of the inner door panel 1. This provides a reliable guarantee for improving the NVH performance of the vehicle during driving, resisting bending deformation of the protective panel accessories, and reducing the risk of resonance during the operation of the window lifting mechanism. It can effectively guarantee the function and performance of the door system and achieve a better user experience for customers.

[0031] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention; or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A modal frame beam design structure for an inner panel of a car door, characterized in that: The inner side of the door inner panel (1) is provided with a structural beam and a peripheral beam (2), the structural beam is connected to the peripheral beam (2), and the inner side of the door inner panel (1) is provided with a frame (3) along the edge of the door inner panel (1).

2. The modular frame beam design structure for the inner panel of a car door according to claim 1, characterized in that: The frame (3) is distributed along the edge of the inner panel (1) of the door, and the structural beam and the peripheral beam (2) are located inside the frame (3).

3. The modular frame beam design structure for the inner panel of a car door according to claim 1, characterized in that: The peripheral beam (2) is U-shaped, and the structural beam includes a window frame structural beam (4). The window frame structural beam (4) is horizontal and located at the opening of the peripheral beam (2). Both ends of the window frame structural beam (4) are connected to the ends of the peripheral beam (2).

4. The modular frame beam design structure for the inner panel of a car door according to claim 3, characterized in that: The structural beam also includes a structural protruding beam (5) and a structural concave beam (6), which are disposed between the window frame structural beam (4) and the peripheral beam (2).

5. The modular frame beam design structure for the inner panel of a car door according to claim 4, characterized in that: The structural protruding beam (5) and the structural concave beam (6) are vertical. The top of the structural protruding beam (5) is connected to the window frame structural beam (4), and the bottom of the structural protruding beam (5) is connected to the peripheral beam (2). The top of the structural concave beam (6) is connected to the window frame structural beam (4), and the bottom of the structural concave beam (6) is connected to the peripheral beam (2).

6. A modal frame beam design structure for an inner door panel according to claim 4 or 5, characterized in that: The structural convex beam (5) and the structural concave beam (6) are adjacent to each other.

7. The modular frame beam design structure for the inner panel of a car door according to claim 6, characterized in that: The concave beam (6) of the structure is long and narrow, and the convex beam (5) of the structure is crescent-shaped.

8. The modular frame beam design structure for the inner panel of a car door according to claim 3, characterized in that: The peripheral beam (2) is set along the inner side of the frame (3).

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