Vehicle door rear reinforcing structure and vehicle

Abstract

The invention provides a vehicle door rear portion reinforcing structure and a vehicle, and belongs to the technical field of vehicles, the vehicle door rear portion reinforcing structure comprises a vehicle door inner plate, a window frame and a reinforcing plate, and the reinforcing plate is provided with a first lap joint part in lap joint with the rear portion of the window frame and a second lap joint part extending backwards to be in lap joint with the vehicle door inner plate; the window frame is lapped on the upper edge of the automobile door inner plate; the reinforcing plate is further provided with a third lap joint part extending towards the lower rear portion, the third lap joint part is in lap joint with a door lock reinforcing plate at the position of a vehicle door lock, and 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 of a triangular reinforcing structure and is connected among the window frame, the vehicle door inner plate and the door lock reinforcing plate, reinforcement is formed on the rear portion of the vehicle door, the strength and rigidity of the rear portion of the vehicle door are improved, and when the vehicle door is excessively opened with large force, the position where the reinforcing plate on the rear portion of the vehicle door is located can fully resist deformation of the vehicle door; the problem of paint cracking of the vehicle door caused by dislocation deformation of inner and outer plates at the edge covering end of the vehicle door is avoided, and the appearance quality and normal opening and closing use performance of the vehicle door are guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of vehicles, and in particular relates to a door rear reinforcement structure and a vehicle having the door rear reinforcement structure. Background Art

[0002] The front part of the door assembly is hinged to the body through a hinge. When the door assembly is opened with great force, the door assembly is cantilevered with the hinge as the fulcrum, and the rear part of the door assembly forms a cantilever end. However, the existing door assembly structure has insufficient strength at the rear part, and the door assembly is deformed under stress. The position of 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 edging end of the door to shift, resulting in paint cracking, affecting the appearance quality of the door. Summary of the invention

[0003] The embodiments of the present invention provide a door rear reinforcement structure and a vehicle, aiming to solve the problem of paint cracking on the door caused by insufficient strength of the rear of the door assembly.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: to provide a door rear reinforcement structure, including: a door inner panel, a window frame and a reinforcement plate, the reinforcement plate having a first overlapping portion overlapping the rear of the window frame, and a second overlapping portion extending rearward and overlapping the door inner panel; wherein the window frame overlaps the upper edge of the door inner panel; the reinforcement plate also has a third overlapping portion extending rearward and downward, the third overlapping portion overlaps the door lock reinforcement plate at the door lock of the vehicle door, and the first overlapping portion, the second overlapping portion and the third overlapping portion constitute a triangular reinforcement structure.

[0005] In combination with the first aspect, in one feasible manner, the front end of the second overlapping portion has a reinforcing portion extending forward and overlapping the rear lower corner of the window frame, wherein the second overlapping portion is located above and rearward of 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 combination with the first aspect, in one achievable 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 combination with the first aspect, in one feasible manner, the third overlapping portion has a bend along the direction extending in the lower rear portion, and a first closed cavity is formed between the third overlapping portion and the window frame, and a second closed cavity is formed between the third overlapping portion and the door lock reinforcement plate.

[0008] In combination with the first aspect, in one achievable manner, a third reinforcing rib is provided on the third overlapping portion, and the third reinforcing rib is provided at a junction between the third overlapping portion and the first overlapping portion and the second overlapping portion.

[0009] In combination with the first aspect, in one achievable manner, the third overlapping portion is also overlapped on the door inner panel.

[0010] In combination with the first aspect, in one achievable manner, it further includes an outer panel reinforcement plate, wherein the outer panel reinforcement plate is overlapped on the lower edge of the window frame, and the rear end of the outer panel reinforcement plate is overlapped on the second overlap portion.

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

[0012] In combination with the first aspect, in one achievable manner, the first overlapping portion is bent along the front-rear direction of the vehicle body, and both sides thereof in the upper-lower direction of the vehicle body respectively have flanges bent toward the window frame.

[0013] Compared with the prior art, the door rear reinforcement structure provided by the present invention has the following beneficial effects: the reinforcement plate serves as a connecting bridge and is connected between the window frame, the door inner panel and the lock reinforcement plate in a triangular reinforcement structure, thereby forming reinforcement at the rear of the door and improving the strength and rigidity of the rear of the door. When the door is opened with great force, the position of the reinforcement plate at the rear of the door can fully resist the deformation of the door, thereby avoiding the problem of paint cracking on the door caused by the misalignment and deformation of the inner and outer panels of the door edging end, thereby ensuring the appearance quality of the door and the normal opening and closing performance of the door.

[0014] In a second aspect, an embodiment of the present invention further provides a vehicle, comprising the door rear reinforcement structure.

[0015] The vehicle provided by the embodiment of the present invention has an enhanced deformation resistance capability of the rear part of the door due to the adoption of such a reinforced structure at the rear part of the door, thereby avoiding the problem of paint cracking caused by the misalignment of the inner and outer panels at the rear end of the door edging, and can ensure the appearance quality of the door and the normal opening and closing performance of the door. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic structural diagram of a vehicle door rear reinforcement structure provided by an embodiment of the present invention;

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

[0018] Figure 3For along Figure 2 The cross-sectional structure diagram of the middle BB line;

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

[0020] Figure 5 A schematic structural diagram of a door rear reinforcement structure without an outer panel reinforcement plate provided by an embodiment of the present invention;

[0021] Figure 6 for Figure 5 A schematic diagram of the local enlarged structure at D in the middle;

[0022] Figure 7 A schematic structural diagram of a door rear reinforcement structure without a door inner panel provided by an embodiment of the present invention;

[0023] Figure 8 for Figure 7 A schematic diagram of the local enlarged structure at E in the middle;

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

[0025] Fig.10 for Fig. 9 A schematic diagram of the local enlarged structure at F in the middle;

[0026] Fig.11 A schematic diagram of the structure of the reinforcement plate provided in the embodiment of the present invention Figure 1 ;

[0027] Fig.12 For along Fig.11 The cross-sectional structure diagram of the G1-G1 line;

[0028] Fig.13 For along Fig.11 The cross-sectional structure diagram of the G2-G2 line;

[0029] Fig.14 For along Fig.11 The cross-sectional structure diagram of the G3-G3 line;

[0030] Fig.15 For along Fig.11 The cross-sectional structure diagram of the G4-G4 line;

[0031] Fig.16 A schematic diagram of the structure of the reinforcement plate provided in the embodiment of the present invention Figure 2 ;

[0032] Fig.17 A schematic diagram of the structure of the reinforcement plate provided in the embodiment of the present invention Figure 3 ;

[0033] Fig.18 A schematic diagram of the structure of a door lock reinforcement plate provided in an embodiment of the present invention;

[0034] Description of reference numerals:

[0035] 1. Window frame; 2. Outer panel reinforcement plate; 3. Door inner panel; 4. Reinforcement plate; 41. First overlapping portion; 411. Flange; 42. Second overlapping portion; 421. Reinforcement portion; 43. Third overlapping portion; 44. Third reinforcement rib; 45. Second reinforcement rib; 5. Door lock reinforcement plate; 6. First open cavity; 7. Second open cavity; 8. First closed cavity; 9. Second closed cavity. DETAILED DESCRIPTION

[0036] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0037] It should be noted that in the description of the present invention, the terms "front", "rear", "up" and "down" that indicate directions or positional relationships are consistent with the "front, rear, up and down" directions of the vehicle body. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as a limitation on the present invention.

[0038] Please also read Figures 1 to 18 The rear reinforcement structure of a vehicle door provided by the present invention is now described. The rear reinforcement structure of a vehicle door comprises: a vehicle door inner panel 3, a window frame 1 and a reinforcement plate 4, wherein the reinforcement plate 4 has a first overlap portion 41 overlapped with the rear portion of the window frame 1, and a second overlap portion 42 extending backwards and overlapped with the vehicle door inner panel 3; wherein the window frame 1 overlaps the upper edge of the vehicle door inner panel 3.

[0039] Compared with the prior art, the door rear reinforcement structure provided by the present invention has the following beneficial effects:

[0040] First, the reinforcing plate has a reinforcing effect on the rear part of the door near the window frame; the reinforcing plate 4 serves as a connecting bridge and is connected between the window frame 1, the door lock reinforcing plate 5 and the door inner panel 3 (that is, the rear upper corner of the door near the window frame) in a triangular reinforcing structure, forming reinforcement at the rear part of the door to improve the strength and rigidity of the rear part of the door. When the door is opened with great force, the position of the reinforcing plate 4 at the rear part of the door can fully resist the deformation of the door, avoid the problem of paint cracking on the door caused by the misalignment and deformation of the inner and outer panels of the door edging end, and ensure the appearance quality of the door.

[0041] Second, the reinforcing plate has the function of alleviating, dispersing and eliminating stress concentration at the rear part of the door near the window frame; the reinforcing plate is connected between the rear lower corner of the window frame and the door inner panel. Since the rear lower corner of the window frame is located at the corner and is a position where the rear part of the door protrudes backward, stress concentration is easily formed. Through the reinforcing plate, the stress on the window frame, the door outer panel and the door inner panel can be dispersed and transmitted through the first overlapping part and the second overlapping part, thereby alleviating the stress concentration at this position and avoiding the problem of cracking of the paint layer on the surface of the door outer panel.

[0042] Third, the area of ​​the door protruding backwards at the upper rear corner near the rear lower corner of the window frame is where the door is opened. When the door is opened, the door forms a cantilever with the hinge as the axis, and the upper rear corner of the door is 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, the cantilever end tends to sag. The insufficient strength of the upper rear part of the door will cause the rear part of the door to sag and the door to deform. Over time, the door may not be able to close tightly. A reinforcement plate is provided at the rear lower corner of the window frame at the upper rear corner of the door to increase the strength of the cantilever end to resist the problem of sagging and deformation of the door. This can improve and alleviate the problem of door deformation caused by the sagging of the rear part of the door after the door is opened, thereby ensuring the normal opening and closing performance of the door.

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

[0044] In some embodiments, Figure 5 and Figure 6 As shown, the front end of the second overlapping portion 42 has a reinforcing portion 421 extending forward and overlapping the rear lower corner of the window frame 1, wherein 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 (such as Figure 6 f) is greater than the connection points between the first overlap portion 41 and the window frame 1. In this embodiment, the reinforcing plate 4 overlaps the window frame 1 to form a window frame assembly; and among the connection points between the reinforcing plate 4 and the window frame 1, the connection points at the upper rear end are greater than the connection points at the lower front end, thereby ensuring the firmness of the connection of the reinforcing plate 4, improving and alleviating the tendency of the reinforcing plate 4 to sag and deform due to its own gravity, thereby ensuring the anti-deformation ability of the rear part of the door. For example, the second overlap portion 42 and the window frame 1 have four connection points distributed in a quadrilateral structure, and the first overlap portion 41 has one connection point.

[0045] The reinforcement portion formed by the forward extension of the second overlapping portion of the reinforcement plate 4 increases the overlapping area between the reinforcement plate and the window frame, and also provides structural support for the layout of more connection points between the second overlapping portion 42 and the window frame 1; at the same time, it is also convenient to disperse the layout of multiple connection points to avoid stress concentration problems in a small range; and the second overlapping portion is located above and behind the first overlapping portion 41, and through the reinforced connection of multiple connection points, the problem of sagging of the rear end of the reinforcement plate 4 is improved and avoided in the local area where the reinforcement plate is suspended, and the reinforced connection at the front end of the second overlapping portion 42 is also used to prevent the rear end of the second overlapping portion 42 from sagging and superimposing on the problem of overall sagging of the vehicle door.

[0046] Since the rear lower corner of the window frame assembly is basically at the rearmost end of the vehicle door, the reinforcing plate 4 is reinforced at the rear lower corner of the window frame 1 at the rear of the vehicle door, which can improve and alleviate the problem of misalignment between the door inner panel 3 and the door outer panel at the rear end edge of the vehicle door, and can improve the problem of cracked paint on the vehicle door.

[0047] The connection between the second overlapping portion 42 of the reinforcing plate 4 and the window frame 1 may be welded, clamped or screwed.

[0048] In some embodiments, Figures 4 to 17 As shown, the reinforcement plate 4 also has a third overlapping portion 43 extending rearward and downward, and the third overlapping portion 43 is overlapped on the door lock reinforcement plate 5 at the door lock of the vehicle door. The first overlapping portion 41, the second overlapping portion 42 and the third overlapping portion 43 form a triangular reinforcement structure.

[0049] The reinforcing plate 4 is used as a connecting bridge. It is first connected to the window frame 1 to form a front corner fixation, and then connected to the door inner panel 3, the door lock reinforcement plate 5 and the outer panel reinforcement plate 2 to form a rear upper fixation and a rear lower fixation, and finally a triangular reinforcement structure is formed, which makes the rear of the door stable and reliable, greatly improves the deformation resistance of the rear of the door, and avoids the problem of stress concentration. When the door is opened too hard, the rear triangular reinforcement structure can fully resist the deformation of the door, solve the problem of door deformation and paint cracking, and ensure the appearance quality and normal opening and closing performance of the door.

[0050] Here, the door inner panel 3, the door lock reinforcement plate 5 and the window frame assembly are connected to form an inner panel sub-assembly. Among them, the reinforcement plate 4, the door inner panel 3 and the door lock reinforcement plate 5 form a three-layer welding d (such as Figure 6 The three-layer connection can also be formed by two buckles or two screws.

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

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

[0053] Among them, the first overlapping portion 41 and the second overlapping portion 42 are basically parallel and both extend along the front and rear directions of the vehicle body. At the same time, the two overlapping portions are also basically parallel to the lower edge of the window frame 1, thereby improving the structural strength of the rear lower corner area of ​​the window frame 1 and increasing the strength of the rear part of the door.

[0054] In some embodiments, Figures 1 to 4 , such as 11 and Fig.15 As shown, the third overlap portion 43 has a bend along the direction extending from the rear lower part, and a first closed cavity 8 is formed between the third overlap portion 43 and the window frame 1, and a second closed cavity 9 is formed between the third overlap portion 43 and the door lock reinforcement plate 5. The reinforcement plate 4 is arranged on the upper part of the window frame 1 and the door lock reinforcement plate 5, and is also located on the upper part of the door inner panel 3. It is connected to the door lock reinforcement plate 5 and the door inner panel 3 through the third overlap portion 43 to form two closed cavities. The formed closed cavity has the functions of buffering and energy absorption, and improves the anti-deformation ability of the rear part of the door. The bend of the third overlap portion 43 itself ensures the strength of the reinforcement plate 4 itself.

[0055] The third lap joint 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 provided at the junction of the third lap joint 43 and the first lap joint 41 and the second lap joint 42 to improve the strength of the third lap joint 43, thereby improving the structural strength of the reinforcing plate 4. Fig.11 , Fig.16 shown.

[0056] In some embodiments, Figure 5 and Figure 6 As shown, the third overlap portion 43 is also overlapped on the door inner panel 3. Here, the reinforcing plate 4 and the door inner panel 3 form two layers of welding e through two welding points, as shown in FIG. Figure 6 As shown, two layers of connection can also be formed by two buckles or two screws. The reinforcement plate also plays a role in strengthening the door lock part.

[0057] In some embodiments, Figure 1 and Figure 2As shown, it also includes an outer panel reinforcement plate 2, which extends along the length direction of the window frame 1 and overlaps the lower edge of the window frame 1. The rear end of the outer panel reinforcement plate 2 overlaps the second overlap portion 42. The inner panel sub-assembly is connected to the outer panel reinforcement plate 2 to form a door inner panel assembly. Among them, the door inner panel 3, the reinforcement plate 4 and the outer panel reinforcement plate 2 are sequentially attached from the inside to the outside through two welding points to form a three-layer welding c, as shown in FIG. Figure 2 As shown, increase the strength in this position.

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

[0059] The second overlap portion 42 has two bends, and a second reinforcing rib 45 is provided at the intersection of the two bends to improve the strength of the second overlap portion 42. Fig.11 and Fig.16 shown.

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

[0061] The reinforcing plate 4 is connected with the door inner panel 3, the window frame 1, the outer panel reinforcing plate 2, and the door lock reinforcing plate 5 to form the door inner panel 3 assembly, and four reinforced cavities (two closed cavities and two open cavities) are generated at the same time, which greatly improves the deformation resistance of the rear part of the door.

[0062] In some embodiments, Figures 11 to 13 As shown, the first overlap portion 41 is bent along the front-rear direction of the vehicle body, and has flanges 411 bent toward the window frame 1 on both sides in the upper and lower directions of the vehicle body. The first overlap portion 41 improves the strength of the reinforcing plate 4 itself through its own bending and flanges 411, thereby improving the anti-deformation performance of the rear part of the door.

[0063] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0064] Based on the same inventive concept, an embodiment of the present application also provides a vehicle, comprising the door rear reinforcement structure described above.

[0065] The vehicle provided by the embodiment of the present invention has a door with a reinforced structure at the rear, which improves the anti-deformation capability of the door rear, avoids the problem of paint cracking caused by the misalignment of the inner and outer panels at the rear edge of the door, and ensures the appearance quality of the door and the normal opening and closing performance of the door.

[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 in the protection scope of the present invention.

Claims

1. A door rear reinforcement structure, characterized in that: include: A vehicle door inner panel (3), a window frame (1) and a reinforcing plate (4), wherein the reinforcing plate (4) has a first overlapping portion (41) overlapped with the rear portion of the window frame (1), and a second overlapping portion (42) extending rearwards and overlapping with the vehicle door inner panel (3); wherein the window frame (1) overlaps the upper edge of the vehicle door inner panel (3); the reinforcing plate (4) also has a third overlapping portion (43) extending rearwards and downwards, wherein the third overlapping portion (43) overlaps with a door lock reinforcing plate (5) at the vehicle door lock, and the first overlapping portion (41), the second overlapping portion (42) and the third overlapping portion (43) form a triangular reinforcing structure.

2. The vehicle door rear reinforcement structure according to claim 1, characterized in that: The front end of the second overlapping portion (42) has a reinforcing portion (421) extending forward and overlapping the rear lower corner of the window frame (1), wherein the second overlapping portion (42) is located above and behind the first overlapping portion (41), and the second overlapping portion (42) has more connection points with the window frame (1) than the first overlapping portion (41) has with the window frame (1).

3. The vehicle door rear reinforcement structure according to claim 1, characterized in that: The angle between the first overlapping portion (41) and the third overlapping portion (43) is an obtuse angle, and the angle between the second overlapping portion (42) and the third overlapping portion (43) is an acute angle.

4. The vehicle door rear reinforcement structure according to claim 1, characterized in that: The third overlapping portion (43) is bent along the direction extending from the rear lower portion, 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 reinforcement plate (5).

5. The vehicle door rear reinforcement structure according to claim 1, characterized in that: A third reinforcing rib (44) is provided on the third overlapping portion (43), and the third reinforcing rib (44) is provided at the connection between the third overlapping portion (43) and the first overlapping portion (41) and the second overlapping portion (42).

6. The vehicle door rear reinforcement structure according to claim 1, characterized in that: The third overlapping portion (43) is also overlapped on the vehicle door inner panel (3).

7. The vehicle door rear reinforcement structure according to claim 1, characterized in that: It also comprises an outer panel reinforcement plate (2), wherein the outer panel reinforcement plate (2) is overlapped on the lower edge of the window frame (1), and the rear end of the outer panel reinforcement plate (2) is overlapped on the second overlap portion (42).

8. The vehicle door rear reinforcement structure according to claim 7, characterized in that: The second overlapping portion (42) is bent 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 reinforcement plate (2), and a second open cavity (7) is formed between the second overlapping portion (42) and the door inner panel (3).

9. The vehicle door rear reinforcement structure according to claim 1, characterized in that: The first overlapping portion (41) is bent along the front-rear direction of the vehicle body, and has flanges (411) bent toward the window frame (1) on both sides in the upper and lower directions of the vehicle body.

10. A vehicle, characterized in that: The invention comprises a vehicle door rear reinforcement structure as claimed in any one of claims 1 to 9.

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