A new type of side door sheet metal local reinforcement structure
Patent Information
- Application Number
- CN202522699369.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-19
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-12-19
AI Technical Summary
In existing technology, when the side and rear doors are opened to their maximum angle, there is no reinforced rigid connection between the upper and lower parts of the waterline, which leads to stress concentration and the risk of cracking and corrosion.
A novel side door sheet metal local reinforcement structure is designed. Through stress transmission analysis, the sheet metal reinforcement structure is optimized by adding water-cutting reinforcement components, support plate components, and hinge reinforcement plates to form a continuous reinforcement connection and improve stress distribution.
It reduces stress concentration at the moment the car door is opened too wide, reduces the occurrence of cracking, reduces the risk of corrosion, and improves the impact resistance and safety of the car door.
Smart Images
Figure CN224928818U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of automobile manufacturing technology, and more specifically, it relates to a novel side door sheet metal partial reinforcement structure. Background Technology
[0002] In existing technology, after the side and rear door is opened to its maximum angle (maximum opening angle of the limiter), there is no reinforced rigid connection between the upper and lower parts of the water slit line. When the door is opened and twisted, at the moment of over-opening, the non-edge-sealed areas of the inner and outer panels of the side and rear door near the waistline R-angle, due to stress concentration, may cause glue cracking.
[0003] Cracks in car doors can negatively impact the customer's driving experience. Furthermore, repeated opening and closing over a long period can cause the adhesive to crack and peel off, increasing the gaps between the sheet metal and raising the risk of corrosion. Utility Model Content
[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a new type of side door sheet metal local reinforcement structure. Through stress transmission analysis, the sheet metal reinforcement structure is modified and optimized to improve the problem of local stress concentration in the sheet metal caused by excessive door opening under the characteristic shape, and reduce the risk of cracking and corrosion.
[0005] The novel side door sheet metal partial reinforcement structure includes an outer door panel and an inner door panel. The inner door panel is fixed inside the outer door panel, defining an installation space between them. A window frame is provided above the installation space. A window frame reinforcement plate, a water-cutting reinforcement component, a door lock reinforcement plate, a support plate assembly, and a hinge reinforcement plate are fixed within the installation space. The window frame reinforcement plate is fixed to one side of the window frame and is fixedly connected to the outer and inner door panels, with one end protruding into the installation space. The water-cutting reinforcement component is fixed within the installation space, located below the window frame, with one end fixedly connected to the window frame reinforcement plate. The door lock reinforcement plate is fixed within the installation space, with one end fixedly connected to the window frame reinforcement plate. The hinge reinforcement plate is fixed to the end of the installation space away from the door lock reinforcement plate and is fixedly connected to a portion of the water-cutting reinforcement component. The support plate assembly consists of multiple plates fixed within the installation space, with some plates fixedly connected to the door lock reinforcement plate and the hinge reinforcement plate. An outer water-cutting reinforcement plate is fixed between the water-cutting reinforcement component and a portion of the support plate assembly.
[0006] Preferably, the water-cutting reinforcement assembly includes an outer water-cutting reinforcement plate and an inner water-cutting reinforcement plate. The middle part of the outer water-cutting reinforcement plate is fixedly connected to the outer door panel and the outer water-cutting lower reinforcement plate. One end of the outer water-cutting reinforcement plate is fixedly connected to the window frame reinforcement plate, and the other end is fixedly connected to the inner water-cutting reinforcement plate and the hinge reinforcement plate. The inner water-cutting reinforcement plate is fixedly connected to the inner door panel.
[0007] Preferably, a bridging plate is fixed between the outer water-cutting reinforcing plate and the inner water-cutting reinforcing plate, and the bridging plate is located at the end of both facing the window frame reinforcing plate.
[0008] Preferably, the support plate assembly includes an upper door support plate, a middle door support plate, and a lower door support plate. The upper door support plate is inclinedly disposed in the installation space, with one end fixedly connected to the outer door panel and the door lock reinforcement plate, and the other end fixedly connected to the outer door panel, the hinge reinforcement plate, and the outer water-cutting reinforcement plate. The middle door support plate is located below the upper door support plate, with one end fixedly connected to the outer door panel and the other end fixedly connected to the hinge reinforcement plate. One end of the lower door support plate is fixedly connected to the middle door support plate, and the other end extends below the hinge reinforcement plate and is fixedly connected to the outer door panel.
[0009] Preferably, the outer water-cutting reinforcing plate is interference-fitted toward the inner wall of the outer door panel, and the opposite sides are interference-fitted with the outer water-cutting reinforcing plate and the upper support plate of the door, respectively.
[0010] Preferably, an upper guide rail and a side guide rail are fixed to the top of the window frame and the end away from the window frame reinforcing plate, respectively; wherein, one end of the side guide rail extends into the installation space and is fixedly connected to the hinge reinforcing plate.
[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. By analyzing the force transmission, the sheet metal reinforcement structure was modified and optimized to improve the problem of local stress concentration in the sheet metal caused by the excessive opening of the door under the characteristic shape, thereby reducing the risk of cracking and corrosion. Attached Figure Description
[0012] Figure 1 This is the front view of the present invention; Figure 2 This is a schematic diagram of the internal structure of the present invention; Figure 3 This is a schematic diagram of the internal structure of this utility model from another angle; Figure 4 This is a stress test diagram before optimization of this utility model; Figure 5 This is the optimized stress test diagram of this utility model.
[0013] In the diagram, 1. Outer door panel; 2. Inner door panel; 3. Installation space; 4. Window frame; 41. Window frame reinforcing plate; 42. Upper guide rail; 43. Side guide rail; 5. Water cutter reinforcing assembly; 51. Outer water cutter reinforcing plate; 52. Inner water cutter reinforcing plate; 53. Outer water cutter lower reinforcing plate; 54. Bridging plate; 6. Door lock reinforcing plate; 7. Support plate assembly; 71. Upper support plate of the door; 72. Middle support plate of the door; 73. Lower support plate of the door; 8. Hinge reinforcing plate. Detailed Implementation
[0014] The present invention will be further described below with reference to the accompanying drawings: The directional terms used in the detailed description paragraphs are only for the convenience of those skilled in the art to understand the technical solutions described in this application based on the visual orientation shown in the accompanying drawings. Unless otherwise expressly specified and limited, the terms "setting," "installation," "connection," etc., should be interpreted broadly, and those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0015] like Figures 1 to 3 As shown, a novel side door sheet metal partial reinforcement structure includes an outer door panel 1 and an inner door panel 2. The inner door panel 2 is fixed to the inside of the outer door panel 1, defining an installation space 3 between them. A window frame 4 is provided above the installation space 3. A window frame reinforcement plate 41, a water-cutting reinforcement component 5, a door lock reinforcement plate 6, a support plate assembly 7, and a hinge reinforcement plate 8 are fixed within the installation space 3. The window frame reinforcement plate 41 is fixed to one side of the window frame 4 and is fixedly connected to the outer door panel 1 and the inner door panel 2, with one end of the window frame reinforcement plate 41 protruding into the installation space 3. The water-cutting reinforcement component 5 is fixed to the installation space 1. Within space 3, located below window frame 4, one end of the door lock reinforcing plate 6 is fixedly connected to window frame reinforcing plate 41; the door lock reinforcing plate 6 is fixed within installation space 3, one end of which is fixedly connected to window frame reinforcing plate 41; the hinge reinforcing plate 8 is fixed at the end of installation space 3 away from door lock reinforcing plate 6, and is fixedly connected to a portion of water-cutting reinforcing component 5; the support plate assembly 7 consists of multiple plates fixed within installation space 3, and some plates are fixedly connected to door lock reinforcing plate 6 and hinge reinforcing plate 8; wherein, an outer water-cutting lower reinforcing plate 53 is fixed between water-cutting reinforcing component 5 and a portion of support plate assembly 7.
[0016] Optionally, the outer water-cutting reinforcing plate 53 is made of DC01 material, 1.2mm thick steel plate, and is fixedly connected to the outer water-cutting reinforcing plate 51 and the upper support plate 71 of the door by spot welding, establishing a continuous reinforcing connection structure. Compared with the unoptimized structure, the optimized structure optimizes the force transmission path through the reinforced connection structure. Thus, at the moment the side and rear door over-opens, the optimized structure weakens the torsional effect of the upper and lower parts of the water-cutting line of the side and rear door, thereby reducing the stress concentration near the waistline R-angle of the side and rear door caused by shearing.
[0017] like Figure 4 and Figure 5 As shown in the data from the stress test, before the structural optimization, the stress at the edge of the outer door panel 1 reached 860 at the moment of opening; after the structural optimization, the stress at the edge of the outer door panel 1 decreased from 860 to 538 at the moment of opening, and the stress was significantly improved. The actual vehicle verification showed good results, with no cracking and greatly reducing the risk of corrosion.
[0018] like Figure 2 and Figure 3 As shown, the water-cutting reinforcement assembly 5 includes an outer water-cutting reinforcement plate 51 and an inner water-cutting reinforcement plate 52. The middle part of the outer water-cutting reinforcement plate 51 is fixedly connected to the outer door panel 1 and the outer water-cutting lower reinforcement plate 53, one end of which is fixedly connected to the window frame reinforcement plate 41, and the other end is fixedly connected to the inner water-cutting reinforcement plate 52 and the hinge reinforcement plate 8. The inner water-cutting reinforcement plate 52 is fixedly connected to the inner door panel 2. A bridging plate 54 is fixed between the outer water-cutting reinforcement plate 51 and the inner water-cutting reinforcement plate 52, and the bridging plate 54 is located at the end of both facing the window frame reinforcement plate 41. In this way, the addition of the bridging plate 54 between the outer water-cutting reinforcement plate 51 and the inner water-cutting reinforcement plate 52 can improve the supporting force between the two and improve the impact resistance of the water-cutting reinforcement assembly 5.
[0019] like Figure 2 and Figure 3 As shown, the support plate assembly 7 includes an upper door support plate 71, a middle door support plate 72, and a lower door support plate 73. The upper door support plate 71 is inclinedly disposed in the installation space 3, with one end fixedly connected to the outer door panel 1 and the door lock reinforcing plate 6, and the other end fixedly connected to the outer door panel 1, the hinge reinforcing plate 8, and the outer water-cutting reinforcing plate 53. The middle door support plate 72 is located below the upper door support plate 71, with one end fixedly connected to the outer door panel 1 and the other end fixedly connected to the hinge reinforcing plate 8. One end of the lower door support plate 73 is fixedly connected to the middle door support plate 72, and the other end extends below the hinge reinforcing plate 8 and is fixedly connected to the outer door panel 1. In this way, the upper door support plate 71, middle door support plate 72, and lower door support plate 73, distributed in a stepped manner between the outer door panel 1 and the inner door panel 2, form a comprehensive rigid impact-resistant structure within the installation space 3. This allows the outer door panel 1 to effectively disperse impact force when subjected to impact, ensuring the safety of the occupants. Furthermore, the lower door support plate 73, together with the middle door support plate 72 and the area below the hinge reinforcement plate 8, form a triangular structure. This not only improves the impact resistance of the door from the direction of the outer door panel 1 but also assists the hinge reinforcement plate 8 in improving the shear resistance of the door on the hinge side, thereby reducing the shear stress of the door from the hinge connection direction.
[0020] Optionally, the outer water-cutting reinforcing plate 53 is interference-fitted toward the inner wall of the outer door panel 1, and the opposite sides are interference-fitted with the outer water-cutting reinforcing plate 51 and the upper support plate 71 of the door, respectively.
[0021] like Figure 2 and Figure 3As shown, an upper guide rail 42 and a side guide rail 43 are fixed to the top of the window frame 4 and the end away from the window frame reinforcing plate 41, respectively; one end of the side guide rail 43 extends into the mounting space 3 and is fixedly connected to the hinge reinforcing plate 8. In this way, by setting the upper guide rail 42 and the side guide rail 43 in the window frame 4, the raising and lowering of the vehicle window can be guided, avoiding the vehicle window from tilting or shifting during the raising and lowering process.
[0022] Finally, although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A novel side door sheet metal partial reinforcement structure, comprising an outer door panel (1) and an inner door panel (2), wherein the inner door panel (2) is fixed to the inner side of the outer door panel (1), and an installation space (3) is defined between the two, and a window frame (4) is provided above the installation space (3), characterized in that: The installation space (3) is fixed with a window frame reinforcing plate (41), a water-cutting reinforcing component (5), a door lock reinforcing plate (6), a support plate component (7), and a hinge reinforcing plate (8). The window frame reinforcing plate (41) is fixed to one side of the window frame (4) and is fixedly connected to the outer door panel (1) and the inner door panel (2), with one end of the window frame reinforcing plate (41) protruding into the installation space (3). The water-cutting reinforcing component (5) is fixed in the installation space (3) and located below the window frame (4), with one end of it fixedly connected to the window frame reinforcing plate (41). The door lock reinforcing plate (6) is fixed to the window frame reinforcing plate (41). The plate (6) is fixed in the installation space (3), and one end of it is fixedly connected to the window frame reinforcing plate (41); the hinge reinforcing plate (8) is fixed in the installation space (3) away from the door lock reinforcing plate (6), and is fixedly connected to a portion of the water cutter reinforcing assembly (5); the support plate assembly (7) is composed of multiple plates fixed in the installation space (3), and some plates are fixedly connected to the door lock reinforcing plate (6) and the hinge reinforcing plate (8); wherein, an outer water cutter lower reinforcing plate (53) is fixed between the water cutter reinforcing assembly (5) and a portion of the support plate assembly (7).
2. The novel side door sheet metal partial reinforcement structure according to claim 1, characterized in that: The water-cutting reinforcement assembly (5) includes an outer water-cutting reinforcement plate (51) and an inner water-cutting reinforcement plate (52). The middle part of the outer water-cutting reinforcement plate (51) is fixedly connected to the outer door panel (1) and the outer water-cutting lower reinforcement plate (53). One end of the outer water-cutting reinforcement plate (51) is fixedly connected to the window frame reinforcement plate (41), and the other end is fixedly connected to the inner water-cutting reinforcement plate (52) and the hinge reinforcement plate (8). The inner water-cutting reinforcement plate (52) is fixedly connected to the inner door panel (2).
3. The novel side door sheet metal partial reinforcement structure according to claim 2, characterized in that: A bridging plate (54) is fixed between the outer water-cutting reinforcing plate (51) and the inner water-cutting reinforcing plate (52), and the bridging plate (54) is located at one end of both facing the window frame reinforcing plate (41).
4. The novel side door sheet metal partial reinforcement structure according to claim 1, characterized in that: The support plate assembly (7) includes an upper door support plate (71), a middle door support plate (72), and a lower door support plate (73). The upper door support plate (71) is installed in the installation space (3) at an angle. One end is fixedly connected to the outer door panel (1) and the door lock reinforcement plate (6), and the other end is fixedly connected to the outer door panel (1), the hinge reinforcement plate (8), and the outer water-cutting reinforcement plate (53). The middle door support plate (72) is located below the upper door support plate (71). One end is fixedly connected to the outer door panel (1), and the other end is fixedly connected to the hinge reinforcement plate (8). One end of the lower door support plate (73) is fixedly connected to the middle door support plate (72), and the other end extends to the bottom of the hinge reinforcement plate (8) and is fixedly connected to the outer door panel (1).
5. A novel side door sheet metal partial reinforcement structure according to any one of claims 1 to 4, characterized in that: The outer water-cutting reinforcing plate (53) is interference-fitted toward the inner wall of the outer door panel (1), and the opposite sides are interference-fitted with the outer water-cutting reinforcing plate (51) and the upper support plate (71) of the door, respectively.
6. A novel side door sheet metal partial reinforcement structure according to claim 1, characterized in that: The top of the window frame (4) and the end away from the window frame reinforcing plate (41) are respectively fixed with an upper guide rail (42) and a side guide rail (43); wherein, one end of the side guide rail (43) extends into the installation space (3) and is fixedly connected to the hinge reinforcing plate (8).