CCB modal lifting annular structure of non-bearing type vehicle body structure

Abstract

The invention relates to the field of automobile body stabilizing structures, in particular to a CCB modal lifting annular structure of a non-bearing type automobile body structure, which is characterized in that a front top cross beam welding assembly, a front floor sub assembly, a left inner door ring assembly and a right inner door ring assembly respectively form the upper, lower, left and right frame edges of a first frame body annular structure; the instrument cross beam support divides the first frame annular structure into a second frame annular structure and a third frame annular structure, and the gutter channel body assembly, the instrument cross beam support, the left front wheel cover upper reinforcing beam assembly and the right front wheel cover form a fourth frame annular structure. According to the CCB modal lifting annular structure, the multi-annular structures are formed in the front portion and the middle portion of the non-bearing vehicle body, so that the rigidity of the vehicle body structure is improved, the inherent frequency of a CBB can be improved, resonance and steering wheel shaking are prevented, the NVH and safety performance of the whole vehicle are remarkably improved, and meanwhile the manufacturing cost of the whole vehicle is reduced.

Description

Technical Field

[0001] The invention relates to the field of automobile body stabilizing structures, in particular to a CCB modal lifting annular structure of a non-load-bearing body structure. Background Art

[0002] The non-load-bearing CCB (Cross Car Beam, generally refers to the instrument cross beam bracket) modal improvement structure refers to a structure that improves the CCB natural frequency to avoid being close to the vibration excitation frequency at engine idling, reduces steering wheel vibration, makes the driving process smoother and more comfortable, and improves driving comfort and safety. When performing modal analysis on the instrument cross beam bracket of an existing vehicle, it was found that the NVH (noise, vibration and harshness) and safety performance requirements were at a low value, and the structure was not optimized, resulting in a complex process. Summary of the invention

[0003] The purpose of the present invention is to provide a CCB modal lifting ring structure for a non-load-bearing body structure, which can increase its natural frequency, prevent resonance and steering wheel vibration, significantly improve the NVH and safety performance of the entire vehicle, and reduce the manufacturing cost of the entire vehicle.

[0004] The purpose of the present invention can be achieved through the following technical solutions:

[0005] A CCB modal lifting annular structure of a non-load-bearing body structure, the body structure includes an instrument cross beam bracket, a left front wheel cover upper reinforcement beam assembly, a right front wheel cover upper reinforcement beam assembly, a left inner door ring assembly, a right inner door ring assembly, a front top cross beam welding assembly, a water flow channel body assembly and a front floor sub-assembly, the front top cross beam welding assembly, the front floor sub-assembly, the left inner door ring assembly and the right inner door ring assembly respectively constitute the upper and lower left and right frame edges of the first frame annular structure, the left and right ends of the instrument cross beam bracket are respectively connected to the inner side edges of the middle of the front end of the left inner door ring assembly and the right inner door ring assembly, and the lower end of the instrument cross beam bracket is connected to the The front floor sub-assembly is connected, the upper end of the instrument cross beam bracket is arranged below the front top cross beam welding assembly, the instrument cross beam bracket divides the first frame annular structure into a second frame annular structure and a third frame annular structure, the left front wheel cover upper reinforcement beam assembly and the right front wheel cover upper reinforcement beam assembly are respectively connected to the front ends of the left inner door ring assembly and the right inner door ring assembly, the two ends of the water trough body assembly are respectively connected to the inner sides of the front ends of the left front wheel cover upper reinforcement beam assembly and the right front wheel cover upper reinforcement beam assembly, the water trough body assembly and the instrument cross beam bracket, the left front wheel cover upper reinforcement beam assembly and the right front wheel cover form a fourth frame annular structure.

[0006] In a further scheme, the left inner door ring assembly includes a left inner door ring body assembly, a left instrument cross beam mounting frame and a door sill energy absorption box assembly, the left instrument cross beam mounting frame is welded to the lower side of the front end of the left inner door ring body assembly and is connected to the left end of the instrument cross beam bracket, the left inner door ring body assembly has a fifth frame annular structure at one end close to the left front wheel cover upper reinforcement beam assembly, the left inner door ring body assembly has a half-frame structure at one end away from the left front wheel cover upper reinforcement beam assembly, the half-frame structure is used to form a sixth frame annular structure with the rear structure of the vehicle, the half-frame structure and the fifth frame annular structure share a frame edge of the fifth frame annular structure, the left inner door ring body assembly has an integral hot-formed structure, and the door sill energy absorption box assembly is arranged on the lower side of the common frame edge; the right inner door ring assembly and the left inner door ring assembly are symmetrical with respect to the longitudinal center plane of the vehicle body.

[0007] In a further scheme, the water gutter body assembly includes a water gutter body, a front windshield lower cross beam, a wiper motor mounting bracket assembly and a water gutter reinforcement plate. The water gutter body is provided with a transverse water gutter, and the two ends of the water gutter are respectively abutted and closed with the left front wheel cover upper reinforcement beam assembly and the right front wheel cover upper reinforcement beam assembly. The wiper motor mounting bracket assembly is arranged in the middle of the water gutter body and is located on the water gutter. The front windshield lower cross beam is welded to the side of the water gutter body close to the left inner door ring assembly. The water gutter reinforcement plate is arranged between the water gutter body and the front windshield lower cross beam, and is located on the inner side of one end of the water gutter close to the front windshield lower cross beam. The upper end of the instrument cross beam bracket is connected to the water gutter body assembly and the water gutter reinforcement plate by bolts.

[0008] In a further scheme, the upper reinforcement beam assembly of the left front wheel cover includes an upper reinforcement beam outer plate, an upper reinforcement beam inner plate and a left hinge reinforcement plate of the hood, the upper reinforcement beam inner plate is welded to the end of the water flow groove for sealing the water flow groove, the upper reinforcement beam outer plate and the upper reinforcement beam inner plate are interconnected to form a frame structure, the left hinge reinforcement plate of the hood is welded to one end of the frame structure close to the water flow groove, and the upper reinforcement beam assembly of the right front wheel cover and the upper reinforcement beam assembly of the left front wheel cover are symmetrical with respect to the longitudinal center plane of the vehicle body.

[0009] In a further solution, the upper end of the instrument crossbeam bracket is connected to the water flow channel reinforcement plate by bolts, and the fourth frame ring structure is divided into a seventh frame ring structure and an eighth frame ring structure.

[0010] In a further scheme, the front top cross beam welding assembly includes a front top cross beam assembly, a left reinforcing rubber block and a right reinforcing rubber block. An installation groove is provided on the front top cross beam assembly. The left reinforcing rubber block and the right reinforcing rubber block are both adhered to the two ends of the installation groove after being coated with a high-temperature foaming agent. The left reinforcing rubber block is located at one end of the installation groove close to the left inner door ring assembly.

[0011] In a further scheme, the front floor sub-assembly includes a front floor body, a front floor frame assembly, a front seat front cross beam assembly and a front seat rear cross beam assembly, the front floor body is welded in the front floor frame assembly, the front seat front cross beam assembly and the front seat rear cross beam assembly are respectively welded to the front and rear parts of the front floor frame assembly at positions for supporting seats, the left and right sides of the front floor body, the front floor frame assembly, the front seat front cross beam assembly and the front seat rear cross beam assembly are respectively welded to the left inner door ring assembly and the right inner door ring assembly, the front end of the front floor body is welded to the lower end of the instrument cross beam bracket, and the third frame annular structure is divided into a ninth frame annular structure, a tenth frame annular structure and an eleventh frame annular structure from left to right.

[0012] In a further solution, a cavity structure is formed between the front floor frame assembly and the front floor body.

[0013] In a further solution, a cavity structure is formed between the front cross beam assembly of the front seat and the front floor body.

[0014] In a further solution, a cavity structure is formed between the front seat rear cross beam assembly and the front floor body.

[0015] Beneficial effects of the present invention:

[0016] The present invention forms a multi-ring structure at the front and middle parts of the non-load-bearing vehicle body through the front floor sub-assembly, the left front wheel cover upper reinforcement beam assembly, the right front wheel cover upper reinforcement beam outer plate assembly, the left inner door ring assembly, the right inner door ring assembly, the front top cross beam welding assembly, the water flow trough body assembly and the instrument cross beam support structure, so as to improve the rigidity of the vehicle body structure, reduce the resonance at the instrument cross beam support, and improve the NVH and safety performance of the whole vehicle.

[0017] The present invention forms a frame structure at the middle part of the side of the non-load-bearing vehicle body through the left inner door ring body and the right inner door ring body, and forms a frame structure at the front part of the side of the non-load-bearing vehicle body through the upper reinforcing beam outer plate and the upper reinforcing beam inner plate, thereby improving the rigidity of the side structure of the non-load-bearing vehicle body and improving the NVH and safety performance of the whole vehicle.

[0018] The present invention forms multiple frame ring structures at the bottom of the non-load-bearing vehicle body through the front floor body, the front floor frame assembly, the front seat front cross beam assembly and the front seat rear cross beam assembly, which can improve the rigidity of the bottom of the non-load-bearing vehicle body. When connected with the instrument cross beam bracket, its natural frequency can be improved, the steering wheel vibration can be reduced, and the driving process can be smoother and more comfortable.

[0019] The left inner door ring body and the right inner door ring body of the present invention are formed in an integrated manner by hot forming, which can also increase their rigidity. In addition, the left and right ends and the front end of the instrument cross beam bracket are respectively locked and connected with the left and right inner door ring assemblies and the water flow channel body assembly by bolts, thereby increasing the connection strength with the front and bottom of the non-load-bearing vehicle body. The lower end of the instrument cross beam bracket is welded to the front floor sub-assembly, thereby improving its modal requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is an axial view of a CCB modal lifting ring structure of a non-load-bearing body structure in an embodiment of the present invention;

[0022] Figure 2 An exploded diagram of a CCB modal lifting ring structure of a non-load-bearing vehicle body structure in an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the connection of the water tank body assembly in an embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the connection of the water flow channel reinforcement plate in an embodiment of the present invention;

[0025] Figure 5 It is a schematic diagram of the connection between the left front wheel housing upper reinforcement beam assembly and the end of the water flow channel body assembly in an embodiment of the present invention;

[0026] Figure 6 Schematic diagram of a front top crossbeam welding assembly in an embodiment of the present invention;

[0027] Figure 7 is a schematic diagram of a left inner door ring assembly in an embodiment of the present invention;

[0028] Figure 8 This is a schematic diagram of the connection of the left mounting bracket of the instrument cross beam in an embodiment of the present invention;

[0029] Fig. 9 A schematic diagram of a front floor sub-assembly in an embodiment of the present invention;

[0030] Fig.10 A schematic diagram of a cavity formed by a front floor body, a front floor frame assembly and a front cross beam assembly of a front seat in an embodiment of the present invention;

[0031] Fig.11It is a rear view schematic diagram of a frame ring structure formed by a front top crossbeam welding assembly, an instrument crossbeam bracket, a left inner door ring assembly, a right inner door ring assembly and a front floor sub-assembly in an embodiment of the present invention;

[0032] Fig.12 It is a top view schematic diagram of a frame ring structure formed by a front top crossbeam welding assembly, an instrument crossbeam bracket, a left inner door ring assembly, a right inner door ring assembly and a front floor sub-assembly in an embodiment of the present invention;

[0033] Fig.13 It is a schematic diagram of a frame ring structure formed by an instrument cross beam bracket, a water flow channel body assembly, a left front wheel cover upper reinforcement beam assembly, and a right front wheel cover upper reinforcement beam assembly in an embodiment of the present invention;

[0034] In the figure: 1. Instrument crossbeam bracket; 2. Left front wheel cover upper reinforcement beam assembly; 201. Upper reinforcement beam outer plate; 202. Upper reinforcement beam inner plate; 203. Hood left hinge reinforcement plate; 3. Right front wheel cover upper reinforcement beam assembly; 4. Left inner door ring assembly; 401. Left inner door ring body assembly; 402. Instrument crossbeam left mounting bracket; 403. Door sill energy absorption box assembly; 5. Right inner door ring assembly; 6. Front top crossbeam welding assembly; 601. Front top crossbeam assembly; 602. Left reinforcement rubber block; 603. Right reinforcement rubber block; 7. Water trough body assembly; 701. Water trough body; 702. Front windshield lower crossbeam; 703. Wiper Motor mounting bracket assembly; 704, water trough reinforcement plate; 8, front floor sub-assembly; 801, front floor body; 802, front floor frame assembly; 803, front seat front crossbeam assembly; 804, front seat rear crossbeam assembly; 9, first frame annular structure; 10, second frame annular structure; 11, third frame annular structure; 12, fourth frame annular structure; 13, fifth frame annular structure; 14, sixth frame annular structure; 15, seventh frame annular structure; 16, eighth frame annular structure; 17, ninth frame annular structure; 18, tenth frame annular structure; 19, eleventh frame annular structure. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] like Figure 1As shown, a CCB modal lifting ring structure of a non-load-bearing body structure, the body structure includes a front floor sub-assembly 8, a left front wheel cover upper reinforcement beam assembly 2, a right front wheel cover upper reinforcement beam assembly 3, a left inner door ring assembly 4, a right inner door ring assembly 5, a front top cross beam welding assembly 6, a water trough body assembly 7 and an instrument cross beam bracket 1, see Fig.11 As shown, the front top cross beam welding assembly 6, the front floor sub-assembly 8, the left inner door ring assembly 4 and the right inner door ring assembly 5 respectively constitute the upper, lower, left and right frame edges of the first frame annular structure 9, the left and right ends of the instrument cross beam bracket 1 are respectively connected to the inner side edges of the middle of the front end of the left inner door ring assembly 4 and the right inner door ring assembly 5, the lower end of the instrument cross beam bracket 1 is connected to the front floor sub-assembly 8, the upper end of the instrument cross beam bracket 1 is arranged below the front top cross beam welding assembly 6, and the instrument cross beam bracket 1 divides the first frame annular structure 9 into a second frame annular structure 10 and a third frame annular structure 11, the left front wheel cover upper reinforcement beam assembly 2 and the right front wheel cover upper reinforcement beam assembly 3 are respectively connected to the front ends of the left inner door ring assembly 4 and the right inner door ring assembly 5, and the two ends of the water flow trough body assembly 7 are respectively connected to the inner sides of the front ends of the left front wheel cover upper reinforcement beam assembly 2 and the right front wheel cover upper reinforcement beam assembly 3, see Fig.13 As shown, the water tank body assembly 7, the instrument cross beam support 1, the left front wheel housing upper reinforcement beam assembly 2 and the right front wheel housing form a fourth frame annular structure 12. Figure 2 As shown in the explosion diagram, the front floor sub-assembly 8, the left front wheel cover upper reinforcement beam assembly 2, the right front wheel cover upper reinforcement beam assembly 3, the left inner door ring assembly 4, the right inner door ring assembly 5, the front top cross beam welding assembly 6, the water trough body assembly 7 and the instrument cross beam bracket 1 are schematically shown. By forming the first frame ring structure 9, the second frame ring structure 10, the third frame ring structure 11 and the fourth frame ring structure 12, the rigidity of the vehicle body and the anti-collision ability of the front part of the vehicle body can be improved as a whole, the support strength and natural frequency of the instrument cross beam bracket 1 can be improved, and it can prevent it from resonating with the engine, and the NVH and safety performance of the whole vehicle can be significantly improved.

[0037] like Figure 7 As shown, the left inner door ring assembly 4 includes a left inner door ring body assembly 401, a door sill energy absorption box assembly 403 and Figure 8 The instrument beam left mounting bracket 402 shown, see Figure 8 As shown, the instrument beam left mounting bracket 402 is welded to the lower front end of the left inner door ring body assembly 401, and is connected to the left end of the instrument beam bracket 1 by connecting bolts. The instrument beam left mounting bracket 402 increases the strength of the connection between the left inner door ring assembly 4 and the instrument beam bracket 1, ensuring the rigidity requirements of the instrument beam bracket 1. Figure 7As shown, the left inner door ring body assembly 401 has a fifth frame annular structure 13 near one end of the left front wheel cover upper reinforcement beam assembly 2, which can increase the rigidity of the non-load-bearing vehicle body side, so that the side has little effect on the vibration of the instrument cross beam bracket 1. The left inner door ring body assembly 401 has a semi-frame structure away from the left front wheel cover upper reinforcement beam assembly 2. The semi-frame structure is used to form a sixth frame annular structure 14 with the rear structure of the vehicle. The semi-frame structure and the fifth frame annular structure 13 share a frame edge of the fifth frame annular structure 13. The left inner door ring body assembly 401 has an integrated hot forming structure, and the door sill energy absorption box assembly 403 is arranged on the lower side of the shared frame edge. The door sill energy absorption box absorbs the side collision energy to avoid bending here, thereby solving the damage to the passengers caused by the side collision. The right inner door ring assembly 5 and the left inner door ring assembly 4 are symmetrical with respect to the longitudinal center plane of the vehicle body. The instrument of the left mounting frame 402 of the instrument cross beam and the right mounting frame of the right inner door ring assembly 5 increase the local installation stiffness of the instrument cross beam bracket 1CBB. The left inner door ring body and the right inner door ring body use a frame ring structure and are formed by a thermoforming process to achieve one-piece forming of different material thicknesses, reduce the number of parts, and add a threshold energy absorption box assembly 403 to solve the side collision collapse problem and protect the driver's safety.

[0038] like Figure 3 As shown, the water trough body assembly 7 includes a water trough body 701, a front windshield lower crossbeam 702, a wiper motor mounting bracket assembly 703 and a water trough reinforcement plate 704. The water trough body 701 has a transverse water trough, and the two ends of the water trough are respectively abutted and closed with the left front wheel cover upper reinforcement beam assembly 2 and the right front wheel cover upper reinforcement beam assembly 3. The wiper motor mounting bracket assembly 703 is arranged in the middle of the water trough body 701 and is located on the water trough, so that the effect of the water trough body 701 is strengthened in the transverse direction, and the middle part of the water trough is prevented from being easily bent due to being too long, thereby improving the overall stiffness of the water trough assembly and the bending and torsional stiffness of the whole vehicle. The front windshield lower crossbeam 702 is welded to the side of the water trough body 701 close to the left inner door ring assembly 4. Figure 4 As shown, the water trough reinforcement plate 704 is arranged between the water trough body 701 and the front windshield lower cross beam 702, and is located on the inner side of the water trough near the front windshield lower cross beam 702, thereby improving the overall rigidity of the water trough assembly. The upper end of the instrument cross beam bracket 1 is connected with the water trough body assembly 7 and the water trough reinforcement plate 704 by bolts, and the water trough reinforcement plate 704 provides a connection point for the instrument cross beam bracket 1. The water trough reinforcement plate 704 is connected with the corresponding bolts to the water trough body 701, thereby strengthening the strength of the connection between the instrument cross beam bracket 1 and the vehicle body.

[0039] like Figure 5As shown, the left front wheel cover upper reinforcement beam assembly 2 includes an upper reinforcement beam outer plate 201, an upper reinforcement beam inner plate 202 and a hood left hinge reinforcement plate 203. The upper reinforcement beam inner plate 202 is welded at the end of the water flow channel to seal the water flow channel. The upper reinforcement beam outer plate 201 and the upper reinforcement beam inner plate 202 are interconnected to form a frame structure. The frame structure not only increases the rigidity of the left front wheel cover upper reinforcement beam assembly 2, but also provides stability for the connection between the left front wheel cover upper reinforcement beam assembly 2 and the instrument cross beam bracket 1. The hood left hinge reinforcement plate 203 is welded on one end of the frame structure close to the water flow channel, which can solve the rigidity problem required by the front engine compartment hood motion hinge. The right front wheel cover upper reinforcement beam assembly 3 and the left front wheel cover upper reinforcement beam assembly 2 are symmetrical with respect to the longitudinal center plane of the vehicle body.

[0040] The upper end of the instrument cross beam support 1 is connected with the water trough body assembly 7 and the water trough reinforcement plate 704 by bolts to divide the fourth frame ring structure 12 into the seventh frame ring structure 15 and the eighth frame ring structure 16. This can further improve the torsional rigidity of the instrument cross beam support 1 and improve the modal requirements of the instrument cross beam support 1.

[0041] like Figure 6 As shown, the front top cross beam welding assembly 6 includes a front top cross beam assembly 601, a left reinforcing rubber block 602 and a right reinforcing rubber block 603. The front top cross beam assembly 601 is provided with a mounting groove. The left reinforcing rubber block 602 and the right reinforcing rubber block 603 are both adhered to the two ends of the mounting groove after being coated with a high-temperature foaming agent. The left reinforcing rubber block 602 is located at one end of the mounting groove near the left inner door ring assembly 4. The left reinforcing rubber block 602 and the right reinforcing rubber block 603 are melted by high-temperature baking and adhered to the front top cross beam assembly 601, which solves the problem that the front top cross beam assembly 601 is too small to be welded, and at the same time provides an effect higher than that of a high-strength steel plate, so that the top pressure resistance is improved, and the related annular structure formed therewith is stable and reliable.

[0042] like Fig. 9 As shown, the front floor subassembly 8 includes a front floor body 801, a front floor frame assembly 802, a front seat front cross beam assembly 803 and a front seat rear cross beam assembly 804. The front floor body 801 is welded in the front floor frame assembly 802, and the front seat front cross beam assembly 803 and the front seat rear cross beam assembly 804 are respectively welded to the front and rear parts of the front floor frame assembly 802 at positions for supporting seats, as shown in FIG. Fig.11 As shown, the left and right sides of the front floor body 801, the front floor frame assembly 802, the front seat front cross beam assembly 803 and the front seat rear cross beam assembly 804 are respectively welded to the left inner door ring assembly 4 and the right inner door ring assembly 5, the front end of the front floor body 801 is welded to the lower end of the instrument cross beam bracket 1, and the third frame ring structure 11 is divided into the ninth frame ring structure 17, the tenth frame ring structure 18 and the eleventh frame ring structure 19 from left to right. Fig.12 As shown, the front floor sub-assembly 8 and the instrument cross beam bracket 1 form a "well"-shaped multi-ring connection structure, which improves the stiffness and seismic resistance of the instrument cross beam bracket 1. The front floor frame assembly 802 can be formed in one piece by hot forming, and adopts a multi-ring structure, which greatly improves the stiffness, reduces parts, saves welding fixtures and work hours, and also contributes to manufacturing tolerances.

[0043] like Fig.10 As shown, a cavity structure is formed between the front floor frame assembly 802 and the front floor body 801. The cavity structure strengthens the bending and torsional rigidity of the ninth frame ring structure, the tenth frame ring structure and the eleventh frame ring structure.

[0044] A cavity structure is formed between the front seat front cross beam assembly 803 and the front floor body 801 .

[0045] A cavity structure is formed between the front seat rear cross beam assembly 804 and the front floor body 801. This strengthens the rigidity requirement of the front floor sub-assembly 8.

[0046] The present invention has the following advantages:

[0047] 1. The invention has a reasonable design layout, reasonable process, convenient manufacturing, and a main frame beam structure, which is suitable for mass production and can minimize manufacturing and production costs.

[0048] 2. The structural design of the present invention is reliable, and the horizontal and vertical frame structure is adopted, which not only meets the requirements of NVH performance, strength fatigue, safety, layout, and process, but also greatly reduces the number of parts compared with traditional structures, reduces the complexity of production and process, speeds up production cycle, reduces costs, and improves product competitiveness.

[0049] 3. The design of the present invention is ingenious and beautiful. According to the performance and functional requirements, a multi-ring structure is adopted to greatly improve the mode of the instrument cross beam bracket 1, improve the comfort and controllability of the vehicle, and provide the driver with a more comfortable driving experience.

[0050] It should be noted that the terms "first", "second", etc. in this application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so as to describe the embodiments of the present application described here.

[0051] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0052] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A CCB modal lifting ring structure of a non-load-bearing body structure, characterized in that: The vehicle body structure comprises an instrument cross beam bracket (1), a left front wheel cover upper reinforcement beam assembly (2), a right front wheel cover upper reinforcement beam assembly (3), a left inner door ring assembly (4), a right inner door ring assembly (5), a front top cross beam welding assembly (6), a water flow channel body assembly (7) and a front floor sub-assembly (8); the front top cross beam welding assembly (6), the front floor sub-assembly (8), the left inner door ring assembly (4) and the right inner door ring assembly (5) respectively constitute the upper, lower, left and right frame edges of the first frame ring structure (9); the left and right ends of the instrument cross beam bracket (1) are respectively connected to the inner side edges of the middle of the front end of the left inner door ring assembly (4) and the right inner door ring assembly (5); the lower end of the instrument cross beam bracket (1) is connected to the front floor sub-assembly (8); The upper end of the instrument cross beam bracket (1) is arranged below the front top cross beam welding assembly (6); the instrument cross beam bracket (1) divides the first frame annular structure (9) into a second frame annular structure (10) and a third frame annular structure (11); the left front wheel cover upper reinforcement beam assembly (2) and the right front wheel cover upper reinforcement beam assembly (3) are respectively connected to the front ends of the left inner door ring assembly (4) and the right inner door ring assembly (5); the two ends of the water flow trough body assembly (7) are respectively connected to the inner sides of the front ends of the left front wheel cover upper reinforcement beam assembly (2) and the right front wheel cover upper reinforcement beam assembly (3); the water flow trough body assembly (7) and the instrument cross beam bracket (1), the left front wheel cover upper reinforcement beam assembly (2) and the right front wheel cover form a fourth frame annular structure (12).

2. The CCB modal lifting ring structure of a non-load-bearing vehicle body structure according to claim 1, characterized in that: The left inner door ring assembly (4) comprises a left inner door ring body assembly (401), a left instrument cross beam mounting frame (402) and a door sill energy absorption box assembly (403); the left instrument cross beam mounting frame (402) is welded to the lower front end of the left inner door ring body assembly (401) and is connected to the left end of the instrument cross beam bracket (1); the left inner door ring body assembly (401) has a fifth frame annular structure (13) at one end close to the left front wheel cover upper reinforcement beam assembly (2); the left inner door ring body assembly (401) is away from the left front wheel cover One end of the hood reinforcement beam assembly (2) has a semi-frame structure, and the semi-frame structure is used to form a sixth frame annular structure (14) with the rear structure of the vehicle. The semi-frame structure and the fifth frame annular structure (13) share a frame edge of the fifth frame annular structure (13). The left inner door ring body assembly (401) has an integral hot-formed structure, and the door sill energy absorption box assembly (403) is arranged on the lower side of the shared frame edge; the right inner door ring assembly (5) and the left inner door ring assembly (4) are symmetrical with respect to the longitudinal center plane of the vehicle body.

3. The CCB modal lifting ring structure of a non-load-bearing vehicle body structure according to claim 1, characterized in that: The water trough body assembly (7) comprises a water trough body (701), a front windshield lower cross beam (702), a wiper motor mounting bracket assembly (703) and a water trough reinforcement plate (704); the water trough body (701) is provided with a transverse water trough, the two ends of the water trough are respectively abutted and sealed with a left front wheel cover upper reinforcement beam assembly (2) and a right front wheel cover upper reinforcement beam assembly (3); the wiper motor mounting bracket assembly (703) is arranged on the water trough body (701) The front windshield lower cross beam (702) is welded to the side of the water trough body (701) close to the left inner door ring assembly (4); the water trough reinforcement plate (704) is arranged between the water trough body (701) and the front windshield lower cross beam (702), and is located on the inner side of one end of the water trough close to the front windshield lower cross beam (702); the upper end of the instrument cross beam bracket (1) is connected to the water trough body assembly (7) and the water trough reinforcement plate (704) by bolts.

4. The CCB modal lifting ring structure of a non-load-bearing vehicle body structure according to claim 3, characterized in that: The left front wheel cover upper reinforcement beam assembly (2) comprises an upper reinforcement beam outer plate (201), an upper reinforcement beam inner plate (202) and a hood left hinge reinforcement plate (203); the upper reinforcement beam inner plate (202) is welded to the end of the water flow channel for sealing the water flow channel; the upper reinforcement beam outer plate (201) and the upper reinforcement beam inner plate (202) are connected to each other to form a frame structure; the hood left hinge reinforcement plate (203) is welded to one end of the frame structure close to the water flow channel; the right front wheel cover upper reinforcement beam assembly (3) and the left front wheel cover upper reinforcement beam assembly (2) are symmetrical with respect to the longitudinal center plane of the vehicle body.

5. The CCB modal lifting ring structure of a non-load-bearing vehicle body structure according to claim 3, characterized in that: The upper end of the instrument crossbeam support (1) is connected to the water flow channel reinforcement plate (704) by bolts, and the fourth frame ring structure (12) is divided into a seventh frame ring structure (15) and an eighth frame ring structure (16).

6. The CCB modal lifting ring structure of a non-load-bearing vehicle body structure according to claim 1, characterized in that: The front top cross beam welding assembly (6) comprises a front top cross beam assembly (601), a left reinforcing rubber block (602) and a right reinforcing rubber block (603). The front top cross beam assembly (601) is provided with a mounting groove. The left reinforcing rubber block (602) and the right reinforcing rubber block (603) are both adhered to the two ends of the mounting groove after being coated with a high-temperature foaming agent. The left reinforcing rubber block (602) is located at one end of the mounting groove close to the left inner door ring assembly (4).

7. The CCB modal lifting ring structure of a non-load-bearing vehicle body structure according to claim 1, characterized in that: The front floor subassembly (8) comprises a front floor body (801), a front floor frame assembly (802), a front seat front cross beam assembly (803) and a front seat rear cross beam assembly (804); the front floor body (801) is welded inside the front floor frame assembly (802); the front seat front cross beam assembly (803) and the front seat rear cross beam assembly (804) are respectively welded to the front and rear parts of the front floor frame assembly (802) at positions for supporting seats; the front floor body (801) is welded to the front floor frame assembly (802); the front seat front cross beam assembly (803) and the front seat rear cross beam assembly (804) are respectively welded to the front and rear parts of the front floor frame assembly (802) at positions for supporting seats; 1), the left and right sides of the front floor frame assembly (802), the front seat front cross beam assembly (803) and the front seat rear cross beam assembly (804) are respectively welded to the left inner door ring assembly (4) and the right inner door ring assembly (5), the front end of the front floor body (801) is welded to the lower end of the instrument cross beam bracket (1), and the third frame annular structure (11) is divided into a ninth frame annular structure (17), a tenth frame annular structure (18) and an eleventh frame annular structure (19) from left to right.

8. The CCB modal lifting ring structure of the non-load-bearing vehicle body structure according to claim 7, characterized in that: A cavity structure is formed between the front floor frame assembly (802) and the front floor body (801).

9. The CCB modal lifting ring structure of a non-load-bearing vehicle body structure according to claim 7, characterized in that: A cavity structure is formed between the front cross beam assembly (803) of the front seat and the front floor body (801).

10. The CCB modal lifting ring structure of a non-load-bearing vehicle body structure according to claim 7, characterized in that: A cavity structure is formed between the front seat rear cross beam assembly (804) and the front floor body (801).

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