Vehicle body structure of B-pillar-free vehicle

Abstract

The utility model belongs to a B-pillar-free vehicle body structure in the technical field of automobile bodies. The side wall outer plate comprises a first side wall outer plate body (1) and a second side wall outer plate body (2), a reinforcing door ring (3) is arranged between the first side wall outer plate body (1) and the second side wall outer plate body (2), one side of the reinforcing door ring (3) is attached to the first side wall outer plate body (1), the other side of the reinforcing door ring (3) is attached to the second side wall outer plate body (2), the front portion of the reinforcing door ring (3) extends to the position of a vehicle column A (4), and the rear portion of the reinforcing door ring (3) extends to the position of a vehicle column C (5). The B-column-free vehicle body structure is simple in structure and high in deformation resistance, the defect that a vehicle body side wall assembly is free of a B column is overcome, the safety strength of a vehicle body is guaranteed, the weight of the vehicle body is reduced, and light weight is good.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile bodies, and more specifically relates to a vehicle body structure without a B-pillar. Background Art

[0002] With the rapid development of the automobile industry, product iterations are rapid. In order to meet the needs of different user groups, configurations such as double doors and floor doors are also being used more and more. For vehicles with double doors, the models currently on the market all use a B-pillar-free structure design for the body side assembly. Compared with conventional B-pillar bodies, this design is at a disadvantage in terms of force transmission and anti-deformation ability in tests such as 25% frontal offset collision and side collision due to the lack of B-pillar support, resulting in insufficient body safety level. At present, there are relatively few models on the market that use a body without a B-pillar design. In order to improve the safety level of these models, the measures taken and the impacts are as follows: First, the door pillars of the double-doors are strengthened to play the role of B-pillars, which increases the weight of the body and the weight of the entire vehicle; then the body frame side assembly is strengthened; the strengthening plan is generally divided into two steps, the first is to increase the cross-sectional cavity area, and the second is to increase the grade or thickness of the internal reinforcement plate to improve the body's ability to resist deformation; because the cross-sectional cavity area is increased, the door opening becomes smaller, affecting the convenience of passengers entering and exiting, and because the thickness of the internal reinforcement plate is increased, the weight of the entire vehicle will also increase, which violates the requirement of lightweight.

[0003] In the prior art, there is a technology named "B-pillar-free door structure and vehicle having the same" and publication number "CN220242944U", which discloses a B-pillar-free door structure and a vehicle having the same, wherein the B-pillar-free door structure includes: a first door and a second door, wherein the first door is located in front of the second door; a first seal, wherein the first seal is adapted to abut between the first door and the second door to seal the gap between the first door and the second door; and a filler, wherein the filler is disposed between the first door and the second door and is located on the side of the first seal facing the outside of the vehicle body. According to the B-pillar-free door structure of the utility model, by disposing a filler between the first door and the second door, the filler can fill the cavity defined by the first door, the second door and the first seal, reduce the volume of the cavity and block the airflow from flowing into the cavity, thereby reducing the airflow flowing into the cavity when the vehicle is driving, reducing the noise at the door gap, and improving the quietness of the vehicle. However, the technology does not involve the technical problems and technical solutions of the present application. Utility Model Content

[0004] The technical problem to be solved by the utility model is: in view of the deficiencies in the prior art, a vehicle body structure without a B-pillar is provided, which has a simple structure and strong anti-deformation ability, makes up for the disadvantage of the vehicle body side assembly having no B-pillar, ensures the safety strength of the vehicle body, reduces the weight of the vehicle body, and has good lightweight.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the utility model is:

[0006] The utility model discloses a vehicle body structure without a B-pillar. A side outer panel comprises a first side outer panel and a second side outer panel. A reinforcing door ring is arranged between the first side outer panel and the second side outer panel. One side of the reinforcing door ring is fitted to the first side outer panel, and the other side of the reinforcing door ring is fitted to the second side outer panel. The front part of the reinforcing door ring extends to the position of the A-pillar 4 of the vehicle, and the rear part of the reinforcing door ring extends to the position of the C-pillar of the vehicle.

[0007] The reinforced door knocker comprises a door knocker front part, a door knocker upper part, a door knocker rear part and a door knocker lower part, and the door knocker front part, the door knocker upper part, the door knocker rear part and the door knocker lower part are connected to form a closed annular structure.

[0008] The door ring front part, door ring upper part, door ring rear part and door ring lower part of the reinforced door ring are an integrated structure.

[0009] The thickness of the front part of the reinforced door knocker is smaller than the thickness of the rear part of the door knocker, and the thickness of the lower part of the door knocker is smaller than the thickness of the upper part of the door knocker.

[0010] The front part and the upper part of the reinforced door knocker have the same thickness, and the rear part and the lower part of the door knocker have the same thickness.

[0011] The width of the front part of the reinforced door ring is greater than the width of the rear part of the door ring, and the thickness of the lower part of the door ring is greater than the width of the upper part of the door ring.

[0012] The reinforced door ring is made of high-strength steel material by integrated hot forming.

[0013] The reinforced door knocker is made of high-strength steel material BR1500HS. The yield strength of the high-strength steel material after quenching is ≥1200 MPa and the tensile strength is ≥1500 MPa.

[0014] The reinforced door ring 3 is provided with a protruding structure and a recessed structure.

[0015] The technical solution of the utility model is adopted, and the working principle and beneficial effects are as follows:

[0016] The vehicle body structure without B-pillar described in the utility model is partially improved on the body structure, and the side outer panel is divided into a first side outer panel and a second side outer panel, and a reinforcing door ring is arranged between the first side outer panel and the second side outer panel, and the reinforcing door ring is clamped between the first side outer panel and the second side outer panel, and one side of the reinforcing door ring is attached to the first side outer panel, and the other side of the reinforcing door ring is attached to the second side outer panel to form an integral body structure. When the reinforcing door ring is arranged, it matches the structure of the parking space outer panel, and after being arranged in place, the front part extends to the position of the vehicle A-pillar, and the rear part of the reinforcing door ring extends to the position of the vehicle C-pillar. In this way, by reinforcing the structure of the door ring, the strength of the body is improved, and the strength is guaranteed without increasing the thickness of the body, and the safety strength requirements of the body are met. At the same time, the side outer panel is an integrated structure, and is no longer formed by sheet metal welding, which reduces multiple sheet metal welding joints, reduces welding points, does not require sheet metal welding, and naturally does not require the overlap of sheet metal welding parts, which also reduces the length of the sheet metal, reduces the cost of tooling and clamping inspection used for welding, and reduces labor costs. Under the premise of ensuring the safety strength of the vehicle body, the cross-section of the side outer panel of the above structure can be smaller than that of conventional vehicles without a B-pillar structure, so the door opening is larger, and it is more convenient for passengers to enter and exit. The small cross-section also reduces the weight of the vehicle body, which is lightweight. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following is a brief description of the contents and symbols in the drawings of this specification:

[0018] Figure 1 A schematic diagram of a vehicle body structure without a B-pillar according to the present invention;

[0019] Figure 2 A schematic diagram of a reinforced door ring of a vehicle body structure without a B-pillar according to the utility model;

[0020] Figure 3 A schematic diagram of a vehicle body structure without a B-pillar in the prior art;

[0021] Figure 4 A schematic diagram of the distribution of welding points of a vehicle body structure without a B-pillar in the prior art;

[0022] The markings in the accompanying drawings are respectively: 1. first side outer panel; 2. second side outer panel; 3. reinforced door ring; 4. vehicle A-pillar; 5. vehicle C-pillar; 6. front of door ring; 7. upper part of door ring; 8. rear part of door ring; 9. lower part of door ring; 10. vehicle body structure; 11. welding point. DETAILED DESCRIPTION

[0023] The following is a detailed description of the embodiments of the present invention, such as the shapes, structures, positions and connection relationships of the components involved, the functions and working principles of the components, etc., by referring to the accompanying drawings:

[0024] As attached Figure 1 As shown, the utility model is a vehicle body structure without a B-pillar, the side outer panel comprises a first side outer panel 1 and a second side outer panel 2, a reinforcing door ring 3 is arranged between the first side outer panel 1 and the second side outer panel 2, one side of the reinforcing door ring 3 is attached to the first side outer panel 1, and the other side of the reinforcing door ring 3 is attached to the second side outer panel 2, the front of the reinforcing door ring 3 extends to the position of the vehicle A-pillar 4, and the rear of the reinforcing door ring 3 extends to the position of the vehicle C-pillar 5. The above structure proposes an improved technical solution to address the deficiencies in the prior art. When setting the structure, the vehicle body structure is partially improved, and the side panel is divided into a first side panel 1 and a second side panel 2. A reinforcing door ring 3 is set between the first side panel 1 and the second side panel 2. The reinforcing door ring 3 is clamped between the first side panel 1 and the second side panel 2. One side of the reinforcing door ring 3 is attached to the first side panel 1, and the other side of the reinforcing door ring 3 is attached to the second side panel 2 to form an integral vehicle body structure. When the reinforcing door ring 3 is set, it matches the structure of the parking space panel. After being arranged in place, the front part extends to the position of the vehicle A-pillar 4, and the rear part of the reinforcing door ring 3 extends to the position of the vehicle C-pillar 5. Such a structure improves the strength of the vehicle body by reinforcing the structure of the door ring, and ensures the strength without increasing the thickness of the vehicle body, so as to meet the requirements of ensuring the safety strength of the vehicle body. At the same time, the side panel is an integrated structure, which is no longer formed by welding of sheet metal parts, reducing multiple sheet metal welding joints, reducing welding points, and not requiring sheet metal welding. Naturally, there is no need for sheet metal welding. The welding parts of the sheet metal do not overlap, which also reduces the length of the sheet metal, reduces the cost of tooling and clamping inspection used for welding, and reduces labor costs. Under the premise of ensuring the safety strength of the vehicle body, the cross-section of the side outer panel can be smaller than that of a conventional vehicle body without a B-pillar structure, so that the door opening is larger, the convenience of passengers entering and exiting is better, and the small cross-section also reduces the weight of the vehicle body, and the lightweight is good. The vehicle body structure without a B-pillar described in the utility model has a simple structure and strong anti-deformation ability, which makes up for the disadvantage of the side assembly without a B-pillar, ensures the safety strength of the vehicle body, reduces the weight of the vehicle body, and is lightweight.

[0025] The reinforced door ring 3 comprises a door ring front portion 6, a door ring upper portion 7, a door ring rear portion 8, and a door ring lower portion 9, which are connected to form a closed annular structure. The above structure, through the arrangement of the reinforced door ring, is clamped on the first side outer panel 1 and the second side outer panel 2, which effectively improves the strength of the vehicle body side outer panel, and the reinforced door ring does not occupy additional space, and the side outer panel can be reduced in cross section.

[0026] The door ring front part 6, the door ring upper part 7, the door ring rear part 8 and the door ring lower part 9 of the reinforced door ring 3 are an integrated structure. In this way, the door ring has better integrity and stronger anti-deformation ability.

[0027] The thickness of the front part 6 of the reinforced door ring 3 is less than that of the rear part 8, and the thickness of the lower part 9 is less than that of the upper part 7. The thickness of the front part 6 and the upper part 7 of the reinforced door ring 3 is equal, and the thickness of the rear part 8 and the lower part 9 is equal. The width of the front part 6 of the reinforced door ring 3 is greater than that of the rear part 8, and the thickness of the lower part 9 is greater than that of the upper part 7. The above structure, according to the requirements related to vehicle collision, increases the thickness and width of some areas of the reinforced door ring 3, and reduces the thickness and width of some areas. While meeting the overall strength requirements of the vehicle body, it can reduce local materials, reduce weight, and achieve lightweight requirements.

[0028] The reinforced door ring 3 is made of high-strength steel material by integrated hot forming. The reinforced door ring 3 is made of high-strength steel material BR1500HS, and the yield strength of the high-strength steel material after quenching is ≥1200mpa, and the tensile strength is ≥1500mpa. In the above structure, the reinforced door ring 3 is made of high-strength steel material by integrated hot forming process, and the deformation resistance after forming is very strong. Compared with conventional B-pillar-free structure models, it can better ensure the integrity of the cab in 25% offset collision and side collision, improve the safety level of the vehicle body, and make up for the disadvantage of the body side assembly without B-pillar structure.

[0029] The reinforcing door ring 3 is provided with a protruding structure and a recessed structure. The above structure, the protruding structure and the recessed structure cooperate with the recessed structure and the protruding structure of the side outer panel, so that the first side outer panel 1, the second side outer panel 2 and the reinforcing door ring 3 are engaged with each other, and the overall strength is good after welding.

[0030] The vehicle body structure without a B-pillar described in the utility model is partially improved on the body structure when the structure is set, and the side outer panel is divided into a first side outer panel 1 and a second side outer panel 2. A reinforcing door ring 3 is set between the first side outer panel 1 and the second side outer panel 2. The reinforcing door ring 3 is clamped between the first side outer panel 1 and the second side outer panel 2. One side of the reinforcing door ring 3 fits the first side outer panel 1, and the other side of the reinforcing door ring 3 fits the second side outer panel 2 to form an integral body structure. When the reinforcing door ring 3 is set, it cooperates with the structure of the parking space outer panel. After being arranged in place, the front part extends to the position of the vehicle's A-pillar 4, and the rear part of the reinforcing door ring 3 extends to the position of the vehicle's C-pillar 5. Such a structure improves the strength of the vehicle body by strengthening the structure of the door ring, ensuring the strength without increasing the thickness of the vehicle body, and meeting the safety strength requirements of the vehicle body. At the same time, the side panel is an integrated structure, no longer formed by sheet metal welding, reducing the number of sheet metal welding joints, reducing welding points, and eliminating the need for sheet metal welding. Naturally, there is no need for sheet metal welding parts to overlap, which reduces the length of the sheet metal, reduces the cost of tooling and clamping inspection used for welding, and reduces labor costs. Under the premise of ensuring the safety strength of the vehicle body, the cross-section of the side panel can be made smaller than that of conventional B-pillar-free structure models, so that the door opening of the vehicle body is larger, and the convenience of occupants entering and exiting is better. The small cross-section also reduces the weight of the vehicle body, making it lightweight.

[0031] The above is an exemplary description of the utility model in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A vehicle body structure without a B-pillar, characterized in that: The side enclosure outer panel comprises a first side enclosure outer panel (1) and a second side enclosure outer panel (2); a reinforcing door ring (3) is arranged between the first side enclosure outer panel (1) and the second side enclosure outer panel (2); one side of the reinforcing door ring (3) is in contact with the first side enclosure outer panel (1), and the other side of the reinforcing door ring (3) is in contact with the second side enclosure outer panel (2); the front part of the reinforcing door ring (3) extends to the position of the vehicle A-pillar (4), and the rear part of the reinforcing door ring (3) extends to the position of the vehicle C-pillar (5).

2. The B-pillar-less vehicle body structure according to claim 1, characterized in that: The reinforced door knocker (3) comprises a door knocker front portion (6), a door knocker upper portion (7), a door knocker rear portion (8), and a door knocker lower portion (9), and the door knocker front portion (6), the door knocker upper portion (7), the door knocker rear portion (8), and the door knocker lower portion (9) are connected to form a closed annular structure.

3. The B-pillar-less vehicle body structure according to claim 2, characterized in that: The door ring front part (6), door ring upper part (7), door ring rear part (8) and door ring lower part (9) of the reinforced door ring (3) are an integrated structure.

4. The B-pillar-less vehicle body structure according to claim 2 or 3, characterized in that: The thickness of the front part (6) of the reinforced door knocker (3) is smaller than the thickness of the rear part (8) of the door knocker, and the thickness of the lower part (9) of the door knocker is smaller than the thickness of the upper part (7) of the door knocker.

5. The B-pillar-less vehicle body structure according to claim 2 or 3, characterized in that: The door ring front part (6) and the door ring upper part (7) of the reinforced door ring (3) have the same thickness, and the door ring rear part (8) and the door ring lower part (9) have the same thickness.

6. The B-pillar-less vehicle body structure according to claim 2 or 3, characterized in that: The width of the front part (6) of the reinforced door ring (3) is greater than the width of the rear part (8) of the door ring, and the thickness of the lower part (9) of the door ring is greater than the width of the upper part (7) of the door ring.

7. The B-pillar-less vehicle body structure according to claim 1 or 2, characterized in that: The reinforced door ring (3) is made of high-strength steel material by integral hot forming.

8. The B-pillar-less vehicle body structure according to claim 2 or 3, characterized in that: The reinforced door knocker (3) is made of high-strength steel material BR1500HS. The yield strength of the high-strength steel material after quenching is ≥1200 MPa and the tensile strength is ≥1500 MPa.

9. The vehicle body structure without a B-pillar according to claim 1 or 2, characterized in that: The reinforced door ring (3) is provided with a protruding structure and a recessed structure.

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