Automobile body structure and automobile

Abstract

The embodiment of the utility model provides an automobile body structure and an automobile. The automobile body structure comprises a back door frame assembly, a left side wall assembly, a right side wall assembly, a lower automobile body assembly and a top cover assembly. The back door frame assembly comprises a back door frame and a top cover rear cross beam; the back door frame is welded with the top cover rear cross beam; the two sides of the back door frame assembly are in sliding lap joint with the left side wall assembly and the right side wall assembly respectively and then are welded and fixed; the top end of the left side wall assembly and the top end of the right side wall assembly are in sliding lap joint with the top cover rear cross beam. The bottom of the back door frame assembly is connected with the lower vehicle body assembly in a welded mode. According to the automobile body structure, the back door frame assembly, the left side wall assembly, the right side wall assembly, the lower automobile body assembly and the top cover assembly can be connected through appropriate structures, and the precision of the automobile body structure can be improved.

Description

Technical field

[0001] The utility model relates to the technical field of automobile accessories, in particular to an automobile body structure and an automobile. [Background Technology]

[0002] The side panel assembly, tailgate frame and lower body assembly of a car are the basic structural parts of the car body. Due to the accumulation of dimensional tolerances in the welding of the side panel assembly, lower body assembly and rear crossbeam of the roof, it is difficult to guarantee the size of the tailgate frame of the body-in-white after it is welded to the car body. After the sealing strip is installed on the tailgate frame, the matching deviation between the tailgate frame and the tailgate is large, resulting in water leakage from the tailgate and external noise being transmitted into the car, affecting the driving experience and increasing maintenance costs. [Utility Model Content]

[0003] The present application provides an automobile body structure and an automobile, which can form a tailgate frame assembly into an integrally formed frame structure, and then connect it with other structural parts using a suitable structure. This can reduce the manufacturing cost of the body structure, improve the accuracy of the automobile body structure, easily ensure the dimensional accuracy of the tailgate frame, and provide good structural stability.

[0004] The embodiment of the present application provides an automobile body structure, which includes: a back door frame assembly, a left side panel assembly, a right side panel assembly, a lower body assembly, and a top cover assembly;

[0005] The back door frame assembly includes a back door frame and a rear cross beam of the top cover. The back door frame is integrally formed and is welded to the rear cross beam of the top cover.

[0006] The two sides of the back door frame assembly are respectively slidably overlapped with the left side panel assembly and the right side panel assembly and then welded and fixed; wherein, the top end of the left side panel assembly and the top end of the right side panel assembly are respectively slidably overlapped with the rear cross beam of the roof;

[0007] The bottom of the back door frame assembly is welded to the lower vehicle body assembly.

[0008] In one embodiment, the back door frame includes a back door frame main body and two first welding portions extending from both sides of the back door frame main body close to the top cover assembly, wherein the first welding portions include a first overlapping area and a second overlapping area with a height difference;

[0009] The left side panel assembly and the right side panel assembly each include a side panel inner panel and a side panel outer panel, wherein the side panel inner panel is provided with an upper portion of the rear cross member of the roof, and the side panel outer panel is provided with a side panel outer panel overlap area;

[0010] The side panel inner panel overlapping area is slidably overlapped with the first overlapping area, and the side panel outer panel overlapping area is slidably overlapped with the second overlapping area.

[0011] In one embodiment, a back door frame inner flange is provided at the inner edge of the back door frame.

[0012] In one embodiment, both the left side panel assembly and the right side panel assembly are provided with process through holes.

[0013] In one embodiment, the side outer panel overlap area is provided with a plurality of welding points arranged at intervals. After the side outer panel overlap area and the second overlap area are slid and overlapped to a predetermined position, the side outer panel overlap area and the second overlap area are welded together.

[0014] In one embodiment, the back door frame further includes a second welding portion extending from the top of the back door frame main body, the second welding portion including a welding boss and an overlapping portion of an edge of the welding boss;

[0015] The roof rear cross beam comprises an upper portion and a lower portion of the roof rear cross beam, and the cross section of the roof rear cross beam is a groove shape;

[0016] The lower portion of the rear cross beam of the top cover is welded to the inner side of the welding boss, and the upper portion of the rear cross beam of the top cover is welded to the inner side of the overlap portion.

[0017] In one embodiment, the lower edge of the rear cross beam of the roof cover toward the rear of the vehicle is arc-shaped, and the upper edge of the rear cross beam of the roof cover toward the rear of the vehicle is arc-shaped and provided with a flange structure.

[0018] In one embodiment, the tailgate frame further includes a left D-pillar reinforcement portion and a right D-pillar reinforcement portion extending outward from both sides of the tailgate frame main body close to the lower body assembly; and a rear skirt reinforcement portion extending downward from the bottom of the tailgate frame main body.

[0019] In one embodiment, the tailgate frame further includes a third welding portion extending from the bottom end of the tailgate frame main body toward the ground, and the third welding portion is welded to the lower vehicle body assembly.

[0020] The present application also provides a car, which includes the above-mentioned car body structure.

[0021] After adopting the above technical solution, the beneficial effects are:

[0022] The embodiment of the present application provides an automobile body structure, wherein the tailgate frame assembly includes an integrally formed tailgate frame and a rear crossbeam of the top cover; the tailgate frame and the rear cover are provided with an overlap structure, and the two are welded after overlap; the two sides of the tailgate frame assembly are provided with sliding overlap structures with the left side panel assembly and the right side panel assembly respectively, and the three are welded after overlap; wherein, the top of the left side panel assembly and the top of the right side panel assembly are provided with sliding overlap structures with the rear crossbeam of the top cover, and the three are welded after overlap; the bottom of the tailgate frame assembly is welded to the lower body assembly. The automobile body structure provided by the present application can form the tailgate frame assembly into an integrally formed frame structure, and then welded to other structural parts using a suitable structure, which can reduce the manufacturing cost of the automobile body structure, improve the structural accuracy of the automobile body, and easily ensure the dimensional accuracy of the tailgate frame, and has good structural stability.

Brief Description of the Drawings

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0024] Figure 1 A schematic diagram of an exploded view of an automobile body structure provided in an embodiment of the present application.

[0025] Figure 2 A schematic diagram of the welding structure of an automobile body structure provided in an embodiment of the present application.

[0026] Figure 3 A schematic structural diagram of a rear door frame assembly of an automobile body structure provided in an embodiment of the present application.

[0027] Figure 4 A schematic diagram of the welding structure of a side panel assembly and a rear door frame assembly of an automobile body structure provided in an embodiment of the present application.

[0028] Figure 5 A schematic diagram of the local structure of the welding area of ​​the side panel assembly of an automobile body structure provided in an embodiment of the present application.

[0029] Figure 6 A schematic diagram of the overlap structure of a side panel assembly and a rear door frame assembly of an automobile body structure provided in an embodiment of the present application.

[0030] Figure 7 A schematic diagram of the rear crossbeam structure of a roof of an automobile body structure provided in an embodiment of the present application.

[0031] Figure 8This is a schematic diagram of an exploded view of a rear door frame assembly of an automobile body structure provided in an embodiment of the present application.

[0032] Reference numerals:

[0033] 1-Back door frame assembly;

[0034] 11- back door frame;

[0035] 110-back door frame main body;

[0036] 1101-Inner flange of back door frame;

[0037] 1102-rear skirt reinforcement;

[0038] 1103-lap joint;

[0039] 1104-welding point;

[0040] 1105-Left D-pillar reinforcement;

[0041] 1106-right D-pillar reinforcement;

[0042] 1107-welded boss;

[0043] 2-top cover assembly;

[0044] 21-top cover front crossbeam;

[0045] 22-top cover rear crossbeam;

[0046] 221-upper part of rear cross member of roof;

[0047] 2211-Flanged structure;

[0048] 222-lower part of rear cross member of roof;

[0049] 3- Left side panel assembly, right side panel assembly;

[0050] 32-side outer panel;

[0051] 322-side outer panel overlap area;

[0052] 34-side inner panel;

[0053] 342-side inner panel overlap area;

[0054] 346-process vias;

[0055] 4-lower body assembly;

[0056] 52-first welding portion;

[0057] 54- second welding portion;

[0058] 56-third welding part;

[0059] 62-first overlapping area;

[0060] 64-Second overlap area. [Specific implementation method]

[0061] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0062] It should be clear that the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0063] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The singular forms "a", "an", "the" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise.

[0064] It should be understood that the term "and / or" as used herein is merely a description of the relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0065] The present application provides an automobile body structure 100, Figure 1 An exploded schematic diagram of an automobile body structure provided in an embodiment of the present application; Figure 2 A schematic diagram of a welding structure of an automobile body structure provided in an embodiment of the present application;

[0066] Figure 3 A schematic diagram of the structure of a rear door frame assembly of an automobile body structure provided in an embodiment of the present application is shown in FIG. Figure 1 、 Figure 2 and Figure 3As shown, the automobile body structure includes: a back door frame assembly 1, a left side panel assembly 3, a right side panel assembly 3, a lower body assembly 4 and a top cover assembly 2. The back door frame assembly 1 includes a back door frame 11 and a top cover rear cross beam 22. The back door frame 11 is an integral stamped frame structure. During the frame assembly process, the back door frame 11 and the top cover rear cross beam 22 are positioned by a fixture and then welded and connected in an inverted L shape. The two sides of the back door frame assembly 1 are respectively slidably overlapped with the left side panel assembly 3 and the right side panel assembly 3 and then positioned by a fixture and then welded and fixed. Among them, the top end of the left side panel assembly 3 and the top end of the right side panel assembly 3 are respectively slidably overlapped with the top cover rear cross beam 22 and positioned by a fixture and then welded; the bottom of the back door frame assembly 1 is positioned by a fixture and then welded to the lower body assembly 4. Finally, the top cover assembly 2 and the top cover front cross beam 21 are welded. The welding method can be metal welding or other welding methods, and the material can be metal or non-metallic material.

[0067] In the above technical solution, the method of sliding overlap followed by welding is adopted, which can reduce the accumulation of welding dimensional tolerances and ensure the size of the white body's back door frame. After the sealing strip is installed on the back door frame, the matching deviation between the back door frame and the back door is small, which will not cause the back door to leak or external noise to be transmitted into the car, thereby improving the driving experience.

[0068] Please continue reading Figures 2 to 8 The back door frame assembly 1 includes a back door frame 11 and a rear cross beam 22 of the top cover. The back door frame 11 is an integrally stamped frame structure.

[0069] Among them, the back door frame 11 includes a back door frame main body 110 and two first welding parts 52 extending from the two sides of the back door frame main body 110 close to the top cover assembly 2. The first welding parts 52 are located in the area where the left and right sides of the back door frame 11 overlap with the left side panel assembly 3 and the right side panel assembly 3.

[0070] The left side panel assembly 3 and the right side panel assembly 3 both include a side panel inner panel 34 and a side panel outer panel 32. The side panel inner panel 34 is located at the inner edge of the left side panel assembly 3 or the right side panel assembly 3. The upper end of the side panel inner panel 34 extends to one end of the rear cross beam 22 of the top cover, and the lower end of the side panel inner panel 34 extends to one end of the bottom of the lower body assembly 4. The outer shape is an irregular arc with a raised structure, and can be formed by stamping or other methods.

[0071] The side panel outer panel 32 is provided with an inner folding structure on the edge facing the rear of the vehicle and is connected to the side panel inner panel 34 and welded to form the left side panel assembly 3 and the right side outer panel assembly 3. The side panel inner panel 34 is provided with a side panel inner panel overlapping area 342. The side panel inner panel overlapping area 342 is located on the side of the welding boss 1107 of the side panel inner panel 34 close to the back door frame 11. The side panel outer panel 32 is provided with a side panel outer panel overlapping area 322 located on the inner folding surface of the side of the side panel outer panel 32 close to the side panel inner panel 34.

[0072] Please continue reading Figure 5 and Figure 6 The area where the inner surface of the back door frame 11 facing the front of the vehicle contacts the overlapping area 342 of the side inner panel 34 is the first overlapping area 62, and the area where the inner surface of the back door frame 11 facing the front of the vehicle contacts the overlapping area 322 of the side outer panel 32 is the second overlapping area 64. There is a height difference between the first overlapping area 62 and the second overlapping area 64, and the height difference can match the height difference between the overlapping positions of the side outer panel overlapping area 322 and the side inner panel overlapping area 342.

[0073] The side inner panel overlap area 342 and the first overlap area 62 are slidably overlapped and then welded, and the side outer panel overlap area 322 and the second overlap area 64 are slidably overlapped and welded. The welding method can be metal welding or other welding methods, and the material can be metal material or non-metal material.

[0074] In the above technical solution, the left side panel assembly 3, the right side panel assembly 3 and the back door frame 11 are slidably overlapped and then positioned by a fixture and then welded, which can avoid the problem of large dimensional deviation after welding caused by the accumulation of dimensional tolerances of previous components.

[0075] Specifically, such as Figure 3 As shown, a back door frame inner flange 1101 is provided at the inner edge of the back door frame 11. The back door frame inner flange 1101 is located in a circular distribution on the inner edge of the back door frame 11 and is bent toward the rear of the vehicle. The edge of the back door frame inner flange 1101 is smooth without sharp corners. The back door frame inner flange 1101 can be used to install a rear vehicle transparent window or other devices.

[0076] In the above technical solution, a back door frame inner flange 1101 structure is provided at the inner edge of the back door frame 11, which can resist distortion, and can well position the components during installation, and is more beautiful.

[0077] Specifically, such as Figure 5 As shown, the left side panel assembly 3 and the right side panel assembly 3 are both provided with a plurality of process through holes 346. The process through holes 346 are arranged on the side panel inner panel overlap area 342 and are located between the side panel inner panel overlap area 342 and the side panel outer panel overlap area 322. The number of process through holes 346 is irregular in shape and can be formed by stamping or other methods. The material can be metal or non-metallic material.

[0078] In the above technical solution, the process through holes 346 provided in the left side panel assembly 3 and the right side panel assembly 3 can reduce weight, facilitate welding by punching with a welding gun, disperse the internal stress generated by stamping, and facilitate welding and assembly processes.

[0079] Specifically, such as Figure 4 、 Figure 5 and Figure 6As shown, the side panel outer panel overlap area 322 is provided with a plurality of spaced welding points 1104. During the assembly process of the left side panel assembly 3, the right side panel assembly 3 and the back door frame assembly 1, the side panel outer panel overlap area 322 and the second overlap area 64 are slid and overlapped to a predetermined position. After the fixture is positioned, the side panel outer panel overlap area 322 and the second overlap area 64 are welded together. The welding method can be metal welding or other welding methods.

[0080] In the above technical solution, the sliding overlap absorbs the accumulated component dimensional tolerances caused by the previous process, and overlaps and fits the two components by overlapping. There is no conflicting part between the two components. Under the clamping of the tooling fixture, multiple points are welded to fix the designed process dimensions with high dimensional accuracy.

[0081] like Figure 7 、 Figure 8 As shown, the roof rear cross beam 22 includes a roof rear cross beam upper portion 221 and a roof rear cross beam lower portion 222 .

[0082] The upper portion 221 of the roof's rear crossbeam is a concave sheet-like structure. Its sides, facing both the front and rear, are curved, with straight edges at both ends. The area between the front and rear edges is recessed toward the vehicle's bottom and features multiple grids parallel to the vehicle's forward direction, which helps reduce the weight of the roof. The rearward edge of the upper portion 221 features a stamped flange structure 2211, which connects to the tailgate frame 11.

[0083] The cross section of the lower part 222 of the rear cross beam of the top cover is L-shaped, and its long side of the L is provided with multiple through holes and a lower groove parallel to its short side of the L; the short side of the L-shaped lower part 222 of the rear cross beam of the top cover and the bottom edge of the upper part 221 of the rear cross beam of the top cover facing the front of the vehicle are welded after being positioned by a tooling fixture to form the rear cross beam of the top cover 22, and the cross section of the rear cross beam of the top cover 22 is groove-shaped.

[0084] In order to achieve rapid assembly of the rear cross beam 22 of the top cover and the back door frame 11, the back door frame 11 is provided with a welding boss 1107 and a lap joint 1103 at the edge of the boss. The welding boss 1107 and the lap joint 1103 at the edge of the welding boss 1107 are located in the second welding portion 54 area. The welding boss 1107 is a lower convex area located in the middle of the top cross frame of the back door frame 11. The welding boss of the back door frame 11 is welded to the lower part 222 of the rear cross beam of the top cover.

[0085] The overlap portion 1103 is a raised arc-shaped structure located on the upper edge of the back door frame 11 facing the front of the vehicle. The overlap portion 1103 of the back door frame 11 is welded to the flange structure 2211 of the rear cross beam 22 of the top cover. By welding the two welding structures with a height difference, the boss 1107 and the overlap portion 1103, the overall welding of the back door frame assembly 1 is achieved, which can ensure the overall structural strength of the back door frame assembly 1, speed up the process assembly convenience of the back door frame assembly 1, and improve production efficiency. In some embodiments, the components of the rear cross beam 22 of the top cover and the back door frame 11 can be formed by stamping or other methods, and the materials can be metal materials or non-metal materials. The welding method can be metal welding or other welding methods. For example, the back door frame 11 can be made of stainless steel, aluminum alloy, etc.

[0086] In the above technical solution, the back door frame 11 is provided with a welding boss 1107 and an overlapping portion 1103 on the edge of the boss, which is beneficial to the accuracy and firmness of the welding between the back door frame 11 and the rear cross beam 22 of the top cover. At the same time, a process reserve is made for the welding of the back door frame assembly 1 and the vehicle side assembly, thereby improving the frame welding dimensional accuracy.

[0087] like Figure 2 and Figure 8 As shown, the tailgate frame 11 is provided with a left D-pillar reinforcement portion 1105 and a right D-pillar reinforcement portion 1106. The left D-pillar reinforcement portion 1105 and the right D-pillar reinforcement portion 1106 are wing-shaped structures extending outward from both sides of the tailgate frame main body close to the lower body assembly 4 and bending inward. A window is provided at the upper and lower ends of the wing-shaped structures of the left D-pillar reinforcement portion 1105 and the right D-pillar reinforcement portion 1106 for installing car lights.

[0088] The tailgate frame 11 also features a rear skirt reinforcement 1102 extending downward from the bottom of the main body of the tailgate frame 11. This is located in the middle of the bottom of the lower frame of the tailgate frame 11, aligning with the license plate mounting area. W-shaped ribs are incorporated into the rear skirt reinforcement 1102. The left and right D-pillar reinforcements 1105 and 1106, as well as the rear skirt reinforcement 1102, can be made of metal or non-metallic materials and can be formed by stamping or other methods.

[0089] In the above technical solution, the left D-pillar reinforcement 1105 and the right D-pillar reinforcement 1106 enhance the strength of the D-pillar, and the two wings are provided with lamp mounting positions, which enriches the use of the component; the structure of the rear skirt reinforcement 1102 enhances the strength of the bottom of the back door frame 11, integrates the license plate installation position requirements, and does not affect the aesthetics of the vehicle.

[0090] Furthermore, if Figure 2As shown, the tailgate frame 11 also includes a third welding portion 56 extending from the bottom end of the main body of the tailgate frame 11 toward the ground. The third welding portion 56 is located at the rear skirt reinforcement portion 1102 and the left and right extension areas of the rear skirt reinforcement portion 1102. The third welding portion 56 of the tailgate frame 11 is welded to the lower body assembly 4. The welding method can be metal welding or other welding methods.

[0091] In the above technical solution, the third weld 56, the two first welds 52 extending from the sides of the back door frame assembly 1, and the second weld 54 extending from the top of the back door frame assembly 1 to the sides together form a complete weld ring, which has high weld strength and is relatively strong. The present application also provides an automobile, comprising the above-mentioned automobile body structure. When the above-mentioned automobile body structure is applied to the automobile assembly process, the manufacturing cost of the automobile body structure can be reduced, the accuracy of the automobile body structure can be improved, the dimensional accuracy of the back door frame can be easily guaranteed, and the structural stability is relatively good.

[0092] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An automobile body structure, characterized in that: The automobile body structure includes: a back door frame assembly, a left side panel assembly, a right side panel assembly, a lower body assembly and a top cover assembly; The back door frame assembly includes a back door frame and a rear cross beam of the top cover. The back door frame is integrally formed and is welded to the rear cross beam of the top cover. The two sides of the back door frame assembly are respectively slidably overlapped with the left side panel assembly and the right side panel assembly and then welded and fixed; wherein, the top end of the left side panel assembly and the top end of the right side panel assembly are respectively slidably overlapped with the rear cross beam of the roof; The bottom of the back door frame assembly is welded to the lower vehicle body assembly.

2. The automobile body structure according to claim 1, characterized in that: The back door frame includes a back door frame main body and two first welding portions extending from both sides of the back door frame main body close to the top cover assembly, wherein the first welding portions include a first overlapping area and a second overlapping area with a height difference; The left side panel assembly and the right side panel assembly each include a side panel inner panel and a side panel outer panel, wherein the side panel inner panel is provided with a side panel inner panel overlapping area, and the side panel outer panel is provided with a side panel outer panel overlapping area; The side panel inner panel overlapping area is slidably overlapped with the first overlapping area, and the side panel outer panel overlapping area is slidably overlapped with the second overlapping area.

3. The automobile body structure according to claim 2, characterized in that: An inner flange of the back door frame is provided at the inner edge of the back door frame.

4. The automobile body structure according to claim 2, wherein: The left side panel assembly and the right side panel assembly are both provided with process through holes.

5. The automobile body structure according to claim 2, characterized in that: The side outer panel overlap area is provided with a plurality of welding points arranged at intervals. After the side outer panel overlap area and the second overlap area are slid and overlapped to a predetermined position, the side outer panel overlap area and the second overlap area are welded together.

6. The automobile body structure according to claim 2, wherein: The back door frame further includes a second welding portion extending from the top of the back door frame main body, the second welding portion including a welding boss and an overlapping portion of an edge of the welding boss; The roof rear cross beam comprises an upper portion and a lower portion of the roof rear cross beam, and the cross section of the roof rear cross beam is a groove shape; The lower portion of the rear cross beam of the top cover is welded to the inner side of the welding boss, and the upper portion of the rear cross beam of the top cover is welded to the inner side of the overlap portion.

7. The automobile body structure according to claim 6, characterized in that: The lower edge of the rear cross beam of the top cover toward the rear of the vehicle is arc-shaped, and the upper edge of the rear cross beam of the top cover toward the rear of the vehicle is arc-shaped and provided with a flanging structure.

8. The automobile body structure according to claim 2, wherein: The back door frame further includes a left D-pillar reinforcement portion and a right D-pillar reinforcement portion extending outward from both sides of the back door frame main body close to the lower body assembly; and a rear skirt reinforcement portion extending downward from the bottom of the back door frame main body.

9. The automobile body structure according to claim 8, characterized in that: The back door frame further includes a third welding portion extending from the bottom end of the back door frame main body toward the ground, and the third welding portion is welded to the lower vehicle body assembly.

10. An automobile, characterized in that: The automobile comprises the automobile body structure according to any one of claims 1 to 9.

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