B column assembly and vehicle

Abstract

The utility model discloses a B-pillar assembly which comprises a B-pillar roof side rail inner plate and a B-pillar inner plate, the B-pillar roof side rail inner plate and the B-pillar inner plate are connected with an A-pillar roof side rail reinforcing plate in a welding mode, and a welding flux hole for containing welding flux is formed in the lap joint position of the B-pillar roof side rail inner plate and the B-pillar inner plate. According to the B-column assembly, the welding flux holes are formed in the lap joint position of the B-column roof side rail inner plate and the B-column inner plate, the B-column roof side rail inner plate and the B-column inner plate can be connected with the A-column roof side rail reinforcing plate more firmly after welding, the rigidity and the strength of connection are enhanced through the structure, abnormal sound is well avoided, and the B-column assembly has the advantages of being simple in structure and convenient to use. And meanwhile, the lap joint surfaces of the B column inner plate and other parts can be reduced, excessive material consumption is avoided, and the lightweight degree can be improved. The utility model further discloses a vehicle.

Description

Technical Field

[0001] The utility model belongs to the technical field, and specifically, the utility model relates to a B-pillar assembly and a vehicle. Background Art

[0002] At present, safety performance is an important indicator of the white body performance, especially in terms of side collision and roof crush performance. Since the buffer area of the side body structure is small, the B-pillar structure of the vehicle body side plays a crucial role in absorbing and transmitting energy in side collisions. In the collision accidents between vehicles, the incidence rate of side collisions reaches 20%, which is higher than that of frontal collisions and only second to the incidence rate of rear-end collisions. And according to the investigation of collision accidents in recent years, in all fatal accidents of various car crash types, the fatality rate of side collisions is as high as 45%. The reason why side collisions often cause more serious injuries to the occupants in the car door than rear-end collisions is that when the car is impacted from the front or the rear, the engine compartment and the trunk both provide a large buffer and energy absorption space for the passenger compartment. However, due to the small variable space on the side of the vehicle body, the degree of injury to the occupants in the car door after the collision is often more serious than that of rear-end collisions.

[0003] The B-pillar assembly is a load-bearing beam between the front and rear rows of the car cockpit, connecting the roof at the top and the floor at the bottom. There is also a wiring harness passing through it, and a seat belt fixing buckle is installed on it. It may even be equipped with a safety airbag, which is an important factor affecting the safety performance of the vehicle body. To ensure safety, by thickening the material, it can be designed as a high-strength rigid member, resulting in less deformation of the B-pillar reinforcement plate when subjected to a side collision, and its top falling off from the car roof, causing injury to the occupants. And the compressive capacity of the car roof is also an important consideration factor for car safety. According to the investigation, in a rollover accident, for a vehicle with a pressure-weight ratio of 1.5 on the car roof, compared with a vehicle with a pressure-weight ratio of 4, the fatality rate or injury rate of the occupants in the car will increase by more than 50%. Therefore, as the most important force transmission path for bearing the roof crush condition, strengthening the contact between the B-pillar and the upper side beam of the roof is particularly important.

[0004] The existing B-pillar assembly has the following defects:

[0005] 1. The ineffective lap surface between the existing upper side beam reinforcement plate and the B-pillar inner panel is too large, consuming too much material, with relatively high cost and low lightweight level;

[0006] 2. The firmness of the connection between the existing vehicle body side and the roof is not high, and in a side collision accident, the separation phenomenon between the roof and the vehicle body side will occur.

[0007] The Chinese patent with the application number 202310132035.X discloses a B-pillar assembly, which includes an inner B-pillar panel, an outer B-pillar panel and a B-pillar reinforcement plate. The B-pillar reinforcement plate is arranged between the inner B-pillar panel and the outer B-pillar panel, and the B-pillar reinforcement plate is strip-shaped and conformally fixed to the outer B-pillar panel; it also includes a seat belt installation reinforcement plate that is strip-shaped and conformally fixed to the inner B-pillar panel; so that the overall B-pillar structure is a multi-layer reinforced laminated structure, which can meet the requirements of structural strength, effectively improve the roof strength performance of the B-pillar, meet the roof strength, and effectively reduce the deformation amount in the upper and middle parts of the B-pillar, ensuring the survival space of the dummy in the whole vehicle side collision condition, and it is a structure that meets the side collision condition.

[0008] It is desired to provide an improved B-pillar assembly, especially regarding how to improve the lightweight degree of the B-pillar assembly. Utility Model Content

[0009] The present utility model aims to solve at least one of the technical problems existing in the prior art. For this reason, the present utility model provides a B-pillar assembly with the aim of improving the lightweight degree.

[0010] To achieve the above object, the technical solution adopted by the present utility model is: a B-pillar assembly, including an inner upper B-pillar panel and an inner B-pillar panel. The inner upper B-pillar panel and the inner B-pillar panel are welded to the A-pillar upper beam reinforcement plate, and a solder hole for accommodating solder is provided at the overlapping part of the inner upper B-pillar panel and the inner B-pillar panel.

[0011] It also includes a B-pillar reinforcement plate, and the B-pillar reinforcement plate is connected to the inner upper B-pillar panel and the inner B-pillar panel.

[0012] The B-pillar reinforcement plate is connected to the outer side panel.

[0013] The B-pillar reinforcement plate is located between the outer side panel and the inner upper B-pillar panel, and the A-pillar upper beam reinforcement plate is connected to the outer side panel.

[0014] The length of the B-pillar reinforcement plate is greater than the width of the inner B-pillar panel.

[0015] The present utility model also provides a vehicle, including the B-pillar assembly described above.

[0016] For the B-pillar assembly of the present utility model, by providing a solder hole at the overlapping part of the inner upper B-pillar panel and the inner B-pillar panel, after welding, the inner upper B-pillar panel and the inner B-pillar panel can be more firmly connected to the A-pillar upper beam reinforcement plate. This structure enhances the stiffness and strength of the connection, and also well avoids the occurrence of abnormal noises. At the same time, it can reduce the overlapping surface between the inner B-pillar panel and other components, avoid excessive material use, and can improve the lightweight degree. Brief Description of the Drawings

[0017] This specification includes the following attached drawings, which respectively show:

[0018] Figure 1 It is a schematic diagram of the side wall structure;

[0019] Figure 2 It is a schematic diagram of a partial side wall structure;

[0020] Figure 3 It is another schematic diagram of a partial side wall structure;

[0021] Figure 4 It is a schematic diagram of the structure of the B-pillar assembly of the present utility model;

[0022] Figure 5 It is a connection schematic diagram of the upper side beam reinforcement plate of the A-pillar and the inner plate of the B-pillar;

[0023] In the figure, the markings are: 1. Inner plate of the upper side beam of the B-pillar; 2. Inner plate of the B-pillar; 3. Reinforcement plate of the upper side beam of the A-pillar; 4. Reinforcement plate of the B-pillar; 5. Outer panel of the side wall. Detailed implementation manners

[0024] The following is a more detailed description of the specific implementation manners of the present utility model by referring to the attached drawings and describing the embodiments, aiming to help those skilled in the art have a more complete, accurate and in-depth understanding of the concept and technical solution of the present utility model and facilitate its implementation.

[0025] As Figures 1 to 5 shown, the present utility model provides a B-pillar assembly, which includes an inner plate 1 of the upper side beam of the B-pillar and an inner plate 2 of the B-pillar. The inner plate 1 of the upper side beam of the B-pillar and the inner plate 2 of the B-pillar are welded to the reinforcement plate 3 of the upper side beam of the A-pillar, and a solder hole for accommodating solder is provided at the overlapping portion of the inner plate 1 of the upper side beam of the B-pillar and the inner plate 2 of the B-pillar.

[0026] Specifically, as Figures 1 to 5 shown, the length direction of the inner plate 1 of the upper side beam of the B-pillar is parallel to the length direction of the reinforcement plate 3 of the upper side beam of the A-pillar. The reinforcement plate 3 of the upper side beam of the A-pillar is connected to the A-pillar assembly. In the present utility model, a solder hole is opened in the middle of the overlapping portion of the inner plate 1 of the upper side beam of the B-pillar and the inner plate 2 of the B-pillar. Then, the innermost mating surface of this solder hole is the reinforcement plate 3 of the upper side beam of the A-pillar. Then, the inner plate 1 of the upper side beam of the B-pillar, the inner plate 2 of the B-pillar and the reinforcement plate 3 of the upper side beam of the A-pillar are welded at this solder hole using carbon dioxide shielded welding, which can well make the three sheet metal bodies of the inner plate 1 of the upper side beam of the B-pillar, the inner plate 2 of the B-pillar and the reinforcement plate 3 of the upper side beam of the A-pillar be more firmly connected together. This structure enhances the stiffness and strength of the connection, thereby enabling the body roof and the side wall to be more firmly connected, and also well avoiding the occurrence of abnormal noises. At the same time, better protection is provided in terms of lightweight.

[0027] As Figures 1 to 5As shown in the figure, the B-pillar assembly provided by the present utility model further includes a B-pillar reinforcement plate 4, and the B-pillar reinforcement plate 4 is connected to the upper ends of the inner panel 1 of the B-pillar upper side beam and the inner panel 2 of the B-pillar. The B-pillar reinforcement plate 4 is welded to the outer panel 5 of the side wall, and the length directions of the B-pillar reinforcement plate 4 and the outer panel 5 of the side wall are parallel to the length direction of the A-pillar upper side beam reinforcement plate 3, and the length of the B-pillar reinforcement plate 4 is greater than the width of the inner panel 2 of the B-pillar.

[0028] As Figures 1 to 5 shown, the B-pillar reinforcement plate 4 is located between the outer panel 5 of the side wall and the inner panel 1 of the B-pillar upper side beam, and the A-pillar upper side beam reinforcement plate 3 is welded to the outer panel 5 of the side wall.

[0029] The B-pillar assembly with the above structure has the following advantages:

[0030] 1. This structure can save the material cost of the sheet metal of the inner panel of the B-pillar and the upper side beam, and effectively improve the lightweight performance;

[0031] 2. This structure uses plug welding, which can effectively avoid abnormal noises;

[0032] 3. This structure can better increase the bending and torsional strength and stiffness of the vehicle body frame, and can also better prevent the separation of the side wall and the roof.

[0033] The present utility model provides a vehicle, including the B-pillar assembly with the above structure. The specific structure of this B-pillar assembly can be referred to Figures 1 to 5 , which will not be elaborated here. Since the vehicle of the present utility model includes the B-pillar assembly in the above embodiment, it has all the advantages of the above B-pillar assembly.

[0034] The above has made an exemplary description of the present utility model in combination with the drawings. Obviously, the specific implementation of the present utility model is not limited by the above methods. As long as various non-substantive improvements are made by adopting the method concept and technical solution of the present utility model; or without improvement, the above concept and technical solution of the present utility model are directly applied to other occasions, all are within the protection scope of the present utility model.

Claims

1. B-pillar assembly, characterized in that: It includes the inner panel of the upper side beam of the B-pillar and the inner panel of the B-pillar. The inner panel of the upper side beam of the B-pillar and the inner panel of the B-pillar are welded to the reinforcing plate of the upper side beam of the A-pillar. Solder holes for accommodating solder are provided at the lap joint of the inner panel of the upper side beam of the B-pillar and the inner panel of the B-pillar.

2. The B-pillar assembly according to claim 1, characterized in that: It further includes a B-pillar reinforcing plate, and the B-pillar reinforcing plate is connected to the inner panel of the upper side beam of the B-pillar and the inner panel of the B-pillar.

3. The B-pillar assembly according to claim 2, wherein: The B-pillar reinforcing plate is connected to the outer panel of the side wall.

4. The B-pillar assembly according to claim 3, wherein: The B-pillar reinforcing plate is located between the outer panel of the side wall and the inner panel of the upper side beam of the B-pillar, and the reinforcing plate of the upper side beam of the A-pillar is connected to the outer panel of the side wall.

5. The B-pillar assembly according to any one of claims 2 to 4, characterized in that: The length of the B-pillar reinforcing plate is greater than the width of the inner panel of the B-pillar.

6. Vehicle, characterized in that: It includes the B-pillar assembly according to any one of claims 1 to 5.

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