Vehicle door rear reinforcement structure and vehicle

Abstract

The application provides a vehicle door rear reinforcing structure and a vehicle, and belongs to the technical field of vehicles, and comprises a door inner plate, a window frame and a reinforcing plate, the reinforcing plate is provided with a first lap joint part which is lap jointed to the rear part of the window frame and a second lap joint part which extends rearward and is lap jointed to the door inner plate; the window frame is lap jointed to the upper edge of the door inner plate; the reinforcing plate is further provided with a third lap joint part which extends rearward and downward and is lap jointed to a door lock reinforcing plate at the door lock part; the first lap joint part, the second lap joint part and the third lap joint part form a triangular reinforcing structure. The reinforcing plate is connected between the window frame, the door inner plate and the door lock reinforcing plate in a triangular reinforcing structure, reinforcing is formed at the rear part of the vehicle door, the strength and rigidity of the rear part of the vehicle door are improved, when the vehicle door is opened with great force, the position of the reinforcing plate at the rear part of the vehicle door can sufficiently resist the deformation of the vehicle door, the problem that the inner and outer plates of the edge end of the vehicle door are dislocated and deformed to cause the vehicle door to be cracked and painted is avoided, and the appearance quality and normal opening and closing performance of the vehicle door are ensured.

Description

Technical Field

[0001] This invention belongs to the field of vehicle technology, specifically relating to a rear door reinforcement structure and a vehicle having the rear door reinforcement structure. Background Technology

[0002] The front of the door assembly is hinged to the body. When the door assembly is opened too forcefully, it cantilevered with the hinge as the fulcrum, and the rear of the door assembly forms the cantilever end. However, the existing door assembly structure has insufficient strength at the rear, causing the door assembly to deform under stress. The upper rear corner of the door near the window frame is a stress concentration point, which causes the inner and outer panels of the rear edge of the door to misalign, resulting in paint cracking and affecting the appearance quality of the door. Summary of the Invention

[0003] This invention provides a rear door reinforcement structure and vehicle, aiming to solve the problem of insufficient strength at the rear of the door assembly, which causes paint cracking in the door.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a rear door reinforcement structure is provided, comprising: an inner door panel, a window frame, and a reinforcing plate. The reinforcing plate has a first overlapping portion that overlaps the rear of the window frame and a second overlapping portion that extends rearward and overlaps the inner door panel. The window frame overlaps the upper edge of the inner door panel. The reinforcing plate also has a third overlapping portion that extends rearward and downward, and the third overlapping portion overlaps the door lock reinforcement plate at the door lock. The first overlapping portion, the second overlapping portion, and the third overlapping portion constitute a triangular reinforcement structure.

[0005] In conjunction with the first aspect, in one feasible manner, the front end of the second overlapping portion has a reinforcing portion that extends forward and overlaps the lower rear corner of the window frame, wherein the second overlapping portion is located above and behind the first overlapping portion, and the second overlapping portion has more connection points with the window frame than the first overlapping portion has connection points with the window frame.

[0006] In conjunction with the first aspect, in one feasible manner, the angle between the first overlapping portion and the third overlapping portion is an obtuse angle, and the angle between the second overlapping portion and the third overlapping portion is an acute angle.

[0007] In conjunction with the first aspect, in one feasible manner, the third overlapping portion has a bend in the direction extending in the rearward direction, and the third overlapping portion forms a first closed cavity with the window frame, and the third overlapping portion forms a second closed cavity with the door lock reinforcing plate.

[0008] In conjunction with the first aspect, in one feasible manner, a third reinforcing rib is provided on the third overlapping portion, and the third reinforcing rib is disposed at the junction of the third overlapping portion with the first overlapping portion and the second overlapping portion.

[0009] In conjunction with the first aspect, in one feasible manner, the third overlapping portion also overlaps with the inner panel of the door.

[0010] In conjunction with the first aspect, in one feasible embodiment, an outer panel reinforcing plate is also included, the outer panel reinforcing plate overlapping the lower edge of the window frame, and the rear end of the outer panel reinforcing plate overlapping the second overlapping portion.

[0011] In conjunction with the first aspect, in one feasible manner, the second overlapping portion has a bend along the front-rear direction of the vehicle body, and a first open cavity is formed between the second overlapping portion and the outer panel reinforcing plate, and a second open cavity is formed between the second overlapping portion and the inner door panel.

[0012] In conjunction with the first aspect, in one feasible manner, the first overlapping portion has a bend along the front-rear direction of the vehicle body, and has flanges on both sides of the vehicle body in the vertical direction that bend towards the window frame.

[0013] The rear door reinforcement structure provided by this invention has the following advantages compared with the prior art: the reinforcing plate acts as a connecting bridge, forming a triangular reinforcing structure between the window frame, the inner door panel, and the lock reinforcement plate, thus forming a reinforcement at the rear of the door and improving the strength and rigidity of the rear of the door. When the door is opened too forcefully, the position of the reinforcing plate at the rear of the door can fully resist the deformation of the door, avoiding the problem of paint cracking caused by misalignment and deformation of the inner and outer panels at the edge of the door, and ensuring the appearance quality of the door and the normal opening and closing performance of the door.

[0014] Secondly, embodiments of the present invention also provide a vehicle including the aforementioned rear door reinforcement structure.

[0015] The vehicle provided in this embodiment of the invention has improved the deformation resistance of the rear part of the door due to the reinforced structure adopted at the rear of the door, avoiding the problem of paint cracking caused by misalignment of the inner and outer panels at the rear edge of the door, thus ensuring the appearance quality of the door and its normal opening and closing performance. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the rear door reinforcement structure provided in an embodiment of the present invention;

[0017] Figure 2 for Figure 1 A magnified schematic diagram of the partial structure at point A in the middle;

[0018] Figure 3For along Figure 2 Cross-sectional view of the middle BB line;

[0019] Figure 4 For along Figure 2 Cross-sectional view of the CC line;

[0020] Figure 5 A schematic diagram of the rear door reinforcement structure provided in an embodiment of the present invention, with the outer reinforcement plate removed;

[0021] Figure 6 for Figure 5 A magnified schematic diagram of the local structure at point D;

[0022] Figure 7 A schematic diagram of the structure of the rear door reinforcement structure provided in an embodiment of the present invention, with the inner door panel removed;

[0023] Figure 8 for Figure 7 A magnified schematic diagram of the local structure at point E;

[0024] Figure 9 for Figure 7 A schematic diagram of the provided rear door reinforcement structure without the door lock reinforcement plate;

[0025] Figure 10 for Figure 9 A magnified schematic diagram of the local structure at point F;

[0026] Figure 11 A schematic diagram of the reinforcing plate provided in an embodiment of the present invention. Figure 1 ;

[0027] Figure 12 For along Figure 11 Cross-sectional view of line G1-G1 in the middle;

[0028] Figure 13 For along Figure 11 Cross-sectional view of line G2-G2 in the middle;

[0029] Figure 14 For along Figure 11 Cross-sectional view of line G3-G3 in the middle;

[0030] Figure 15 For along Figure 11 Cross-sectional view of line G4-G4 in the middle;

[0031] Figure 16 A schematic diagram of the reinforcing plate provided in an embodiment of the present invention. Figure 2 ;

[0032] Figure 17 A schematic diagram of the reinforcing plate provided in an embodiment of the present invention. Figure 3 ;

[0033] Figure 18 This is a schematic diagram of the structure of the door lock reinforcing plate provided in an embodiment of the present invention;

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

[0035] 1. Window frame; 2. Outer panel reinforcement plate; 3. Door inner panel; 4. Reinforcing plate; 41. First overlap; 411. Flanged edge; 42. Second overlap; 421. Reinforcing part; 43. Third overlap; 44. Third reinforcing rib; 45. Second reinforcing rib; 5. Door lock reinforcement plate; 6. First open cavity; 7. Second open cavity; 8. First closed cavity; 9. Second closed cavity. Detailed Implementation

[0036] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0037] It should be noted that in the description of this invention, terms such as "front," "rear," "up," and "down," which indicate orientation or positional relationship, correspond to the "front, rear, up, and down" directions of the vehicle body. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0038] Please refer to the following: Figures 1 to 18 The rear door reinforcement structure provided by the present invention will now be described. The rear door reinforcement structure includes: an inner door panel 3, a window frame 1, and a reinforcing plate 4. The reinforcing plate 4 has a first overlapping portion 41 that overlaps the rear of the window frame 1, and a second overlapping portion 42 that extends rearward and overlaps the inner door panel 3; wherein the window frame 1 overlaps the upper edge of the inner door panel 3.

[0039] The rear door reinforcement structure provided by this invention has the following advantages compared with the prior art:

[0040] First, the reinforcing plate reinforces the rear part of the door near the window frame. The reinforcing plate 4, as a connecting bridge, is a triangular reinforced structure connecting the window frame 1, the door lock reinforcing plate 5, and the inner door panel 3 (that is, the upper rear corner of the door near the window frame). It forms a reinforcement at the rear of the door, improving the strength and rigidity of the rear of the door. When the door is opened too forcefully, the position of the reinforcing plate 4 at the rear of the door can fully resist the deformation of the door, avoiding the problem of paint cracking caused by the misalignment and deformation of the inner and outer panels at the edge of the door, thus ensuring the appearance quality of the door.

[0041] Secondly, the reinforcing plate helps to alleviate, disperse, and eliminate stress concentration at the rear of the door near the window frame. The reinforcing plate connects the lower rear corner of the window frame to the inner door panel. Since the lower rear corner of the window frame is located at a corner and is a protruding part of the rear of the door, stress concentration is likely to occur. Through the reinforcing plate, the stress on the window frame, the outer door panel, and the inner door panel can be dispersed and transferred through the first and second overlaps, thereby alleviating the stress concentration at this location and preventing the paint layer on the outer door panel from cracking.

[0042] Third, the area at the upper rear corner of the door, near the lower rear corner of the window frame, is where the door protrudes rearward. When the door is open, it forms a cantilever around the hinge, with the upper rear corner of the door being the end of the cantilever. Since the door lock and door handle are located near the upper rear corner of the door, and the cantilever has only one fulcrum, its end tends to sag. Insufficient strength in the upper rear of the door can cause the rear of the door to sag and deform, eventually leading to the door not being able to close properly. Placing a reinforcing plate at the lower rear corner of the window frame in the upper rear corner of the door increases the strength of the cantilever end, resisting the sagging and deformation of the door. This improves and alleviates the door deformation caused by the sag of the rear of the door after it is opened, ensuring the normal opening and closing performance of the door.

[0043] Specifically, the reinforcing plate 4 is fixed at the lower rear corner of the window frame 1 near the door lock to improve the support strength of this area.

[0044] In some embodiments, such as Figure 5 and Figure 6 As shown, the front end of the second overlapping portion 42 has a reinforcing portion 421 that extends forward and overlaps the lower rear corner of the window frame 1. The second overlapping portion 42 is located above and behind the first overlapping portion 41, and the connection point between the second overlapping portion 42 and the window frame 1 (e.g., ...) Figure 6 The reinforcing plate 4 has more connection points at the upper rear end than at the lower front end than at the middle (f) of the window frame 1. In this embodiment, the reinforcing plate 4 overlaps with the window frame 1 to form a window frame assembly; and at the connection points between the reinforcing plate 4 and the window frame 1, the upper rear end has more connection points than the lower front end, thereby ensuring the firmness of the connection of the reinforcing plate 4 and improving and mitigating the tendency of the reinforcing plate 4 to sag and deform under its own weight, thus ensuring the deformation resistance of the rear part of the door. For example, the second overlapping part 42 has four connection points distributed in a quadrilateral structure with the window frame 1, while the first overlapping part 41 has one connection point.

[0045] The reinforcement portion formed by the forward extension of the second overlapping portion of the reinforcing plate 4 increases the overlap area between the reinforcing plate and the window frame, and also provides structural support for the arrangement of more connection points between the second overlapping portion 42 and the window frame 1. At the same time, it is also convenient to distribute multiple connection points to avoid stress concentration problems in a small area. Moreover, the second overlapping portion is located above and behind the first overlapping portion 41. Through the reinforced connection of multiple connection points, the problem of the rear end of the reinforcing plate 4 sagging is improved and avoided in the local area where the reinforcing plate is suspended. It is also through the reinforced connection of the front end of the second overlapping portion 42 that the sagging of the rear end of the second overlapping portion 42 is prevented from superimposing on the overall sagging of the door.

[0046] Since the lower rear corner of the window frame assembly is basically located at the very end of the rear of the door, the reinforcement plate 4 is reinforced at the lower rear corner of the rear window frame 1 of the door. This can improve and alleviate the misalignment problem between the inner door panel 3 and the outer door panel at the rear edge of the door, and can also improve the problem of paint cracking on the door.

[0047] The connection between the second overlapping part 42 of the reinforcing plate 4 and the window frame 1 can be welding, snap-fitting, or screwing.

[0048] In some embodiments, such as Figures 4 to 17 As shown, the reinforcing plate 4 also has a third overlapping portion 43 extending rearward and downward. The third overlapping portion 43 overlaps with the door lock reinforcing plate 5 at the door lock. The first overlapping portion 41, the second overlapping portion 42 and the third overlapping portion 43 constitute a triangular reinforcing structure.

[0049] The reinforcing plate 4, acting as a connecting bridge, first connects to the window frame 1 to form a front corner fixation. Then, it connects to the inner door panel 3, the door lock reinforcing plate 5, and the outer panel reinforcing plate 2 to form a rear upper and lower fixation, ultimately forming a triangular reinforcing structure. This ensures the stability and reliability of the rear of the door, significantly improving its resistance to deformation and preventing stress concentration. When the door is opened forcefully, the rear triangular reinforcing structure effectively resists door deformation, solving the problem of door deformation and paint cracking, and ensuring the door's appearance quality and normal opening and closing performance.

[0050] Here, the inner door panel 3, the door lock reinforcement plate 5, and the window frame assembly are connected to form the inner panel sub-assembly. The reinforcement plate 4, the inner door panel 3, and the door lock reinforcement plate 5 are connected by two weld points to form a three-layer weld (e.g., ...). Figure 6 (As shown); or a three-layer connection can be formed by two clips or two screws.

[0051] The three overlapping parts of the reinforcing plate also form three force transmission channels. The stress concentration in the area of ​​the lower rear corner of the window frame at the rear of the door can be distributed to different positions of the body through the three overlapping parts in different directions, which can improve or avoid the problem of paint cracking on the outer side of the rear of the door.

[0052] In some embodiments, such as Figure 16 As shown, the included angle between the first overlapping portion 41 and the third overlapping portion 43 is an obtuse angle, and the included angle between the second overlapping portion 42 and the third overlapping portion 43 is an acute angle. This arrangement of the three overlapping portions of the reinforcing plate 4 is mainly to improve the strength of the rear part of the door after reinforcement. The obtuse angle α between the first overlapping portion 41 and the third overlapping portion 43 is 120° to 170°, for example, α is 130°, 140°, 150°, etc.; the acute angle b between the second overlapping portion 42 and the third overlapping portion 43 is 30° to 60°, for example, b is 35°, 40°, 45°, 55°, etc.

[0053] The first overlapping part 41 and the second overlapping part 42 are basically parallel and extend along the front and rear direction of the vehicle body. At the same time, these two overlapping parts are also basically parallel to the lower edge of the window frame 1, which improves the structural strength of the lower rear corner area of ​​the window frame 1 and also increases the strength of the rear part of the door.

[0054] In some embodiments, such as Figures 1 to 4 , such as 11 and Figure 15 As shown, the third overlapping portion 43 has a bend extending in the rearward and downward direction, and a first closed cavity 8 is formed between the third overlapping portion 43 and the window frame 1, and a second closed cavity 9 is formed between the third overlapping portion 43 and the door lock reinforcing plate 5. The reinforcing plate 4 is arranged on the upper part of the window frame 1 and the door lock reinforcing plate 5, and is also located on the upper part of the inner door panel 3. It is connected to the door lock reinforcing plate 5 and the inner door panel 3 through the third overlapping portion 43, forming two closed cavities. The formed closed cavities have the function of buffering and absorbing energy, improving the deformation resistance of the rear part of the door. The bend of the third overlapping portion 43 itself ensures the strength of the reinforcing plate 4 itself.

[0055] The third overlap 43 is bent into a U-shaped structure, and a third reinforcing rib 44 is provided at the bottom of the U-shaped structure. The third reinforcing rib 44 is located at the junction of the third overlap 43 with the first overlap 41 and the second overlap 42, thereby increasing the strength of the third overlap 43 and thus improving the structural strength of the reinforcing plate 4. Figure 11 , Figure 16 As shown.

[0056] In some embodiments, such as Figure 5 and Figure 6 As shown, the third overlapping part 43 also overlaps with the inner door panel 3. Here, the reinforcing plate 4 and the inner door panel 3 form a two-layer weld e through two weld points, as shown. Figure 6 As shown, a two-layer connection can also be formed using two clips or two screws. The reinforcing plate also strengthens the door lock area.

[0057] In some embodiments, such as Figure 1 and Figure 2As shown, it also includes an outer panel reinforcing plate 2, which extends along the length of the window frame 1 and overlaps the lower edge of the window frame 1. The rear end of the outer panel reinforcing plate 2 overlaps the second overlap portion 42. The inner panel sub-assembly is connected to the outer panel reinforcing plate 2 to form the door inner panel assembly. The door inner panel 3, reinforcing plate 4, and outer panel reinforcing plate 2 are sequentially bonded from the inside to the outside through two weld points, forming a three-layer welded structure. Figure 2 As shown, the intensity is increased at this location.

[0058] In some embodiments, such as Figure 1 , Figure 2 and Figure 3 ,like Figure 11 , Figure 14 As shown, the second overlapping portion 42 has a bend along the front-rear direction of the vehicle body, and a first open cavity 6 is formed between the second overlapping portion 42 and the outer panel reinforcing plate 2, and a second open cavity 7 is formed between the second overlapping portion 42 and the inner door panel 3. Specifically, the reinforcing plate 4 is arranged at the lower rear corner of the window frame 1, located between the outer panel reinforcing plate 2 and the inner door panel 3, and is connected to the outer panel reinforcing plate 2 and the inner door panel 3 through the second overlapping portion 42, dividing the outer panel reinforcing plate 2 and the inner door panel 3 into upper and lower open cavities, thereby improving the deformation resistance of the rear part of the door. The bend of the second overlapping portion 42 itself ensures the strength of the reinforcing plate 4 itself.

[0059] The second lap joint 42 has two bends, and a second reinforcing rib 45 is provided at the junction of the two bends to enhance the strength of the location of the second lap joint 42. Figure 11 and Figure 16 As shown.

[0060] Preferably, each reinforcing rib is a triangular reinforcing rib.

[0061] The door inner panel 3 assembly, formed by connecting the reinforcing plate 4 with the inner door panel 3, window frame 1, outer panel reinforcing plate 2, and door lock reinforcing plate 5, simultaneously generates 4 reinforcing cavities (two closed cavities and two open cavities), which greatly improves the deformation resistance of the rear of the door.

[0062] In some embodiments, such as Figures 11 to 13 As shown, the first overlapping part 41 has a bend along the front-rear direction of the vehicle body, and it has flanges 411 that bend towards the window frame 1 on both sides in the vertical direction of the vehicle body. The first overlapping part 41 improves the strength of the reinforcing plate 4 itself through its bend and flanges 411, thereby improving the deformation resistance of the rear part of the door.

[0063] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0064] Based on the same inventive concept, this application also provides a vehicle including the aforementioned rear door reinforcement structure.

[0065] The vehicle provided in this embodiment of the invention, due to the reinforced structure at the rear of the door, improves the door's resistance to deformation, avoids misalignment of the inner and outer panels at the rear edge of the door, and prevents paint cracking. This ensures the door's appearance quality and normal opening and closing performance.

[0066] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A rear reinforcement structure for a vehicle door, characterized in that, include: The door inner panel (3), window frame (1), and reinforcing plate (4) are provided. The reinforcing plate (4) has a first overlapping part (41) that overlaps the rear of the window frame (1) and a second overlapping part (42) that extends rearward and overlaps the door inner panel (3). The window frame (1) overlaps the upper edge of the door inner panel (3). The reinforcing plate (4) also has a third overlapping part (43) that extends rearward and downward. The third overlapping part (43) overlaps the door lock reinforcing plate (5) at the door lock. The first overlapping part (41), the second overlapping part (42), and the third overlapping part (43) form a triangular reinforcing structure. The front end of the second overlapping part (42) has a reinforcing part (421) that extends forward and overlaps the lower rear corner of the window frame (1), wherein the second overlapping part (42) is located above and behind the first overlapping part (41), and the second overlapping part (42) has more connection points with the window frame (1) than the first overlapping part (41) has connection points with the window frame (1); The third overlapping part (43) has a bend along the direction of the rear lower extension, and the third overlapping part (43) and the window frame (1) form a first closed cavity (8), and the third overlapping part (43) and the door lock reinforcing plate (5) form a second closed cavity (9); It also includes an outer panel reinforcing plate (2), which overlaps the lower edge of the window frame (1), and the rear end of the outer panel reinforcing plate (2) overlaps the second overlapping part (42); The second overlapping part (42) has a bend along the front-rear direction of the vehicle body, and a first open cavity (6) is formed between the second overlapping part (42) and the outer panel reinforcing plate (2), and a second open cavity (7) is formed between the second overlapping part (42) and the inner panel of the door (3).

2. The rear door reinforcement structure as described in claim 1, characterized in that, The angle between the first overlapping part (41) and the third overlapping part (43) is an obtuse angle, and the angle between the second overlapping part (42) and the third overlapping part (43) is an acute angle.

3. The rear door reinforcement structure as described in claim 1, characterized in that, The third lap joint (43) is provided with a third reinforcing rib (44), which is located at the junction of the third lap joint (43) with the first lap joint (41) and the second lap joint (42).

4. The rear door reinforcement structure as described in claim 1, characterized in that, The third overlapping part (43) also overlaps on the inner panel (3) of the door.

5. The rear door reinforcement structure as described in claim 1, characterized in that, The first overlapping part (41) has a bend along the front-rear direction of the vehicle body, and has flanges (411) that bend toward the window frame (1) on both sides of the vehicle body in the vertical direction.

6. A vehicle, characterized in that, Includes the rear door reinforcement structure as described in any one of claims 1-5.

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