A-pillar assembly, front subassembly and vehicle

Abstract

The application relates to the technical field of vehicles and aims to solve the technical problem that an A-pillar structure is difficult to simultaneously consider a small occupied space and strong impact resistance, and provides an A-pillar assembly, a front assembly and a vehicle. The A-pillar assembly comprises an upper A-pillar, a reinforcing pipe and a reinforcing piece. The upper A-pillar is arranged to extend rearward along a first direction, the upper A-pillar is formed with a plurality of bending risk areas, the plurality of bending risk areas are arranged at intervals along the first direction, and the upper A-pillar defines an A-pillar cavity. The reinforcing pipe is arranged in the A-pillar cavity, the reinforcing pipe is connected to the upper A-pillar, the reinforcing pipe is formed with a plurality of reinforcing portions, the plurality of reinforcing portions are arranged at intervals along the length direction of the reinforcing pipe, and each reinforcing portion is arranged in correspondence with one bending risk area. The reinforcing piece is connected to the reinforcing portions to reinforce the strength of the reinforcing portions. The application has the beneficial effect of simultaneously considering a small occupied space and strong impact resistance.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and more specifically, to A-pillar components, front assemblies, and vehicles. Background Technology

[0002] When a vehicle is involved in a collision, the impact force is transmitted to the A-pillar. Typically, the A-pillar is required to exhibit minimal deformation to ensure the stability of the door ring structure it forms. Simultaneously, requirements such as vehicle visibility limit the cross-sectional size of the A-pillar, making it difficult for existing A-pillar structures to simultaneously achieve a small footprint and strong impact resistance. Utility Model Content

[0003] This application provides an A-pillar assembly, a front assembly, and a vehicle to solve the technical problem in the related art that the A-pillar structure is difficult to balance a small footprint with strong impact resistance.

[0004] The embodiments of this application are implemented as follows: In a first aspect, this application provides an A-pillar assembly, comprising: an upper A-pillar extending rearward along a first direction, the upper A-pillar forming a plurality of bending risk zones spaced apart along the first direction, the upper A-pillar defining an A-pillar chamber; a reinforcing tube disposed within the A-pillar chamber, the reinforcing tube connecting to the upper A-pillar, the reinforcing tube forming a plurality of reinforcing portions spaced apart along the length direction of the reinforcing tube, each reinforcing portion corresponding to one of the bending risk zones; and a reinforcing member connected to the reinforcing portions to enhance the strength of the reinforcing portions.

[0005] According to the A-pillar assembly of this application, by reinforcing the upper A-pillar with a strengthening section, the bending resistance of the bending risk zone P can be improved, thereby protecting the passenger compartment and reducing the unlimited intrusion of impact forces into the front assembly. The impact force transmitted to the upper A-pillar is mainly absorbed by the reinforcing tube, thereby reducing the degree of bending of the upper A-pillar. Furthermore, the increased space requirement for the strengthening section is only in the area of ​​the A-pillar cavity corresponding to the bending risk zone P, which facilitates the installation of the reinforcing tube in a smaller space. In addition, since the bending energy absorption generated by the upper A-pillar and the reinforcing tube is minimal, most of the impact force is transmitted to the B-pillar through the upper A-pillar and the reinforcing tube. The strengthening member can further strengthen some of the strengthening sections, thereby further improving the strength of the corresponding strengthening sections in a smaller space.

[0006] In one possible implementation: The plurality of reinforcing parts include a first reinforcing part, a second reinforcing part, and a third reinforcing part. The first reinforcing part is located on the side of the second reinforcing part that is forward along a first direction, and the third reinforcing part is located on the side of the second reinforcing part that is backward along the first direction. The cross-sectional area of ​​the first reinforcing part is smaller than that of the second reinforcing part, and the cross-sectional area of ​​the third reinforcing part is smaller than that of the second reinforcing part. The reinforcing member is connected to the third reinforcing part.

[0007] In one possible implementation: The reinforcing tube also includes a main body, and the first reinforcing part, the second reinforcing part and the third reinforcing part are connected to the main body at intervals along the length direction of the main body. The cross-sectional area of ​​the first reinforcing part is larger than the cross-sectional area of ​​the main body, the cross-sectional area of ​​the second reinforcing part is larger than the cross-sectional area of ​​the main body, and the cross-sectional area of ​​the third reinforcing part is larger than the cross-sectional area of ​​the main body.

[0008] In one possible implementation: The reinforcing member includes a first plate and a second plate. One end of the first plate is connected to one radial side of the reinforcing tube, and one end of the second plate is connected to the other radial side of the reinforcing tube. The other end of the first plate is bent and connected to the other end of the second plate.

[0009] In one possible implementation: The upper A-pillar includes an inner A-pillar sealing plate and an outer A-pillar reinforcing plate. One side edge of the inner A-pillar sealing plate is connected to one side edge of the outer A-pillar reinforcing plate, and the other side edge of the inner A-pillar sealing plate is connected to the other side edge of the outer A-pillar reinforcing plate. The inner A-pillar sealing plate and the outer A-pillar reinforcing plate form the A-pillar cavity. The reinforcing tube is disposed in the A-pillar cavity and connected to the outer A-pillar reinforcing plate.

[0010] In one possible implementation: The A-pillar outer reinforcing plate includes a first plate segment and a second plate segment that are bent and connected; one end of the first plate segment is connected to one side edge of the inner sealing plate of the A-pillar, and one end of the second plate segment is connected to the other side edge of the inner sealing plate of the A-pillar; the reinforcing tube is connected to the first plate segment, and the reinforcing member is located between the inner sealing plate of the A-pillar and the second plate segment.

[0011] In one possible implementation: The reinforcing tube also includes a main body, and a plurality of reinforcing parts are connected to the main body at intervals along the extension direction of the main body. The surface of the reinforcing part is convex relative to the surface of the main body, and the surface of each reinforcing part is smoothly connected to the surface of the main body.

[0012] In one possible implementation: The outer circumferential surface of the reinforcing tube includes a smoothly connected reference surface area, a forming surface area, an outwardly convex surface area, and a transition surface area. The reference surface area is arc-shaped. The forming surface area connects to one side of the reference surface area in the circumferential direction. The transition surface area connects to the other side of the reference surface area in the circumferential direction. The outwardly convex surface area connects the forming surface area and the transition surface area.

[0013] Secondly, this application provides a front assembly including a front bumper beam assembly and an A-pillar assembly. One end of the A-pillar assembly along a first direction is connected to the front bumper beam assembly, one end of the A-pillar assembly along a second direction is used to connect to the B-pillar, and the other end of the A-pillar assembly along the second direction is used to connect to the door sill beam.

[0014] Thirdly, this application provides a vehicle including the aforementioned front assembly. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of a vehicle according to an embodiment of this application.

[0017] Figure 2 This is a side view of the internal structure of a vehicle according to an embodiment of this application.

[0018] Figure 3 This is a three-dimensional structural diagram of the front assembly according to an embodiment of this application.

[0019] Figure 4 This is a schematic diagram of the structure of an A-pillar assembly according to an embodiment of this application.

[0020] Figure 5 This is an exploded structural diagram of the upper A-pillar according to an embodiment of this application.

[0021] Figure 6 This is a cross-sectional view of the upper A-pillar at the third reinforcing part and the reinforcing member according to an embodiment of this application.

[0022] Figure 7 This is a cross-sectional view of the upper A-pillar at the second reinforcing part according to an embodiment of this application.

[0023] Figure 8 This is a cross-sectional view of the upper A-pillar at the first reinforcing part according to an embodiment of this application.

[0024] Figure 9This is an exploded structural diagram of the reinforcing tube and reinforcing member according to an embodiment of this application.

[0025] Explanation of key component symbols: 1. Vehicle; 100. Front assembly; 10. Front bumper beam assembly; 20. Upper side beam assembly; 60. A-pillar assembly; 61. Upper A-pillar; 611. Inner A-pillar end plate; 612. Outer A-pillar reinforcement plate; 6121. First plate segment; 6122. Second plate segment; P60. Bending risk zone; Q60. A-pillar chamber; 62. Reinforcing tube; 621. Reinforcement section; 621a. First reinforcement section; 621b. Second reinforcement section 621c, Third Reinforcing Section; 622, Main Body; 63, Reinforcing Component; 631, First Plate; 632, Second Plate; 64, Lower A-pillar; P61, Reference Surface Area; P62, Forming Surface Area; P63, Outer Convex Surface Area; P64, Transition Surface Area; 200, Top Frame Longitudinal Beam; 300, Sill Beam; 400, B-pillar; 500, Rear Assembly; X, Length Direction; Y, Width Direction; Z, Height Direction.

[0026] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this application. Detailed Implementation

[0027] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0028] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. When a component is said to be "set on" another component, it can be directly set on the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "or / and" as used herein includes any and all combinations of one or more of the associated listed items.

[0030] Some embodiments of this application are described in detail. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0031] See Figure 1 This embodiment provides a vehicle 1. Vehicle 1 has a length direction X, a width direction Y, and a height direction Z. The length direction X of vehicle 1 can be... Figure 1 The first direction is the front-to-back direction of vehicle 1. The height direction Z of vehicle 1 can be... Figure 1 The second direction in the context. Unless otherwise specified, in this embodiment, "outward" refers to the direction from the interior space of vehicle 1 to the exterior space of vehicle 1, "inward" refers to the direction from the exterior space of vehicle 1 to the interior space of vehicle 1, "forward" refers to the direction from the rear of vehicle 1 to the front of vehicle 1, "rearward" refers to the direction from the front of vehicle 1 to the rear of vehicle 1, "upward" refers to the direction along the height direction Z of vehicle 1 from the bottom side of vehicle 1 to the top side of vehicle 1, and "downward" refers to the direction along the height direction Z of vehicle 1 from the top side of vehicle 1 to the bottom side of vehicle 1.

[0032] See Figure 2 Vehicle 1 includes a front assembly 100, a top frame longitudinal beam 200, a sill beam 300, a B-pillar 400, and a rear assembly 500. The front assembly 100, B-pillar 400, and rear assembly 500 are arranged sequentially along the length X direction of vehicle 1. The top frame longitudinal beam 200 is located on the upper side of vehicle 1 in the height Z direction. The top frame longitudinal beam 200 connects the upper ends of the front assembly 100 and B-pillar 400 along the height Z direction of vehicle 1 to the rear assembly 500. The sill beam 300 connects the lower ends of the front assembly 100 and B-pillar 400 along the height Z direction of vehicle 1 to the rear assembly 500. The material of the sill beam 300 can be HC820 / 1180DP.

[0033] In this embodiment, two of each of the top frame longitudinal beam 200, the sill beam 300, and the B-pillar 400 are provided and are spaced apart along the width direction Y of the vehicle 1.

[0034] See also Figure 3 The front assembly 100 includes a front bumper beam assembly 10 and an A-pillar assembly 60. One end of the A-pillar assembly 60 along a first direction is connected to the front bumper beam assembly 10, one end of the A-pillar assembly 60 along a second direction (i.e., the height direction Z of the vehicle 1) is used to connect to the B-pillar 400, and the other end of the A-pillar assembly 60 along the second direction is used to connect to the door sill beam 300.

[0035] In some embodiments, see Figure 4 The A-pillar assembly 60 includes an upper A-pillar 61 and a lower A-pillar 64. One end of the upper A-pillar 61 is connected to the upper side beam assembly 20, and the other end of the upper A-pillar 61 extends to connect to the B-pillar 400. One end of the lower A-pillar 64 is connected to the upper A-pillar 61, and the other end of the lower A-pillar 64 extends to connect to the sill beam 300. After the impact force is transmitted to the A-pillar assembly 60, part of the impact force is transmitted to the upper A-pillar 61, and the other part of the impact force is transmitted to the lower A-pillar 64.

[0036] In some embodiments, see Figure 5 The A-pillar assembly 60 includes an upper A-pillar 61, a reinforcing tube 62, and a reinforcing member 63. The upper A-pillar 61 extends rearward along the length direction X of the vehicle 1. The upper A-pillar 61 forms multiple bending risk zones P60. The multiple bending risk zones P60 are spaced apart along the length direction X of the vehicle 1. The upper A-pillar 61 defines an A-pillar chamber Q60. The reinforcing tube 62 is disposed within the A-pillar chamber Q60 and connects to the upper A-pillar 61. The reinforcing tube 62 forms multiple reinforcing sections 621, which are spaced apart along the length direction X of the reinforcing tube 62. Each reinforcing section 621 corresponds to a bending risk zone P60. By reinforcing the upper A-pillar 61 with the reinforcing sections 621, the bending resistance of the bending risk zones P60 can be improved, thereby protecting the passenger compartment and reducing the unlimited intrusion of impact forces into the front assembly 100. The impact force transmitted to the upper A-pillar 61 is mainly absorbed by the reinforcing tube 62, thereby reducing the degree of bending of the upper A-pillar 61. Furthermore, the increased space requirement for the reinforcing section 621 is only in the area of ​​the A-pillar cavity Q60 corresponding to the bending risk zone P60, facilitating the installation of the reinforcing tube 62 within a smaller space. In addition, since the bending energy absorption generated by the upper A-pillar 61 and the reinforcing tube 62 is minimal, most of the impact force is transmitted to the B-pillar 400 through the upper A-pillar 61 and the reinforcing tube 62. The reinforcing member 63 can further strengthen part of the reinforcing section 621, thereby further increasing the strength of the corresponding reinforcing section 621 within a smaller space.

[0037] Therefore, the A-pillar assembly 60 in this embodiment can balance a small footprint with strong impact resistance.

[0038] In this embodiment, the reinforcing part 621 can be implemented in various ways. For example, in other embodiments, the strength of the material of the reinforcing part 621 can be higher than the strength of the material of the main body 622. Alternatively, the reinforcing tube 62 can be a hollow tube structure, and the wall thickness of the reinforcing part 621 can be greater than the wall thickness of the main body 622.

[0039] In this embodiment, the bending risk zone P60 can be obtained through simulation testing or actual testing. For example, when there is no reinforcing tube 62 in the upper A-pillar 61, a collision impact test is performed on the A-pillar assembly 60 to obtain several areas in the upper A-pillar 61 that are prone to bending, which are the bending risk zones P60.

[0040] In some embodiments, see Figure 5 The reinforcing tube 62 also includes a main body 622. Multiple reinforcing parts 621 protrude from the main body 622. The cross-sectional area of ​​the reinforcing parts 621 is larger than that of the main body 622. In this way, the space requirement of the entire reinforcing tube 62 is only increased at the location of the reinforcing parts 621, thereby allowing the reinforcing tube 62 to be installed in the upper A-pillar 61 where the arrangement space is relatively small, thus improving the applicability of the upper A-pillar 61.

[0041] Optionally, the reinforcing tube 62 can be configured as a thermal expansion tube.

[0042] Optionally, the cross-section of the body 622 is approximately circular, with a diameter of approximately 20 mm to 22 mm. For example, the cross-sectional area of ​​the body 622 can be 20 mm, 21 mm, 21.2 mm, or 22 mm.

[0043] Optionally, the material of the reinforcing tube 62 can be automotive hot-formed steel CR1200 / 1800HS. The wall thickness of the reinforcing tube 62 can be 1.8 mm. In other embodiments, the wall thickness of the reinforcing tube 62 can be greater than 1.8 mm or less than 1.8 mm.

[0044] In some embodiments, see Figure 5 and Figure 6 The A-pillar assembly 60 also includes a reinforcing member 63. The reinforcing member 63 connects to the reinforcing part 621 to enhance the strength of the reinforcing part 621.

[0045] Optionally, the material of the reinforcing member 63 may be automotive hot-formed steel CR950 / 1200HS. The wall thickness of the reinforcing member 63 may be 1.5 mm. In other embodiments, the wall thickness of the reinforcing member 63 may be greater than 1.5 mm or less than 1.5 mm.

[0046] In some embodiments, see Figure 6 The reinforcing member 63 includes a first plate 631 and a second plate 632. One end of the first plate 631 is connected to one radial side of the reinforcing tube 62, and one end of the second plate 632 is connected to the other radial side of the reinforcing tube 62. The other end of the first plate 631 is bent and connected to the other end of the second plate 632. In this way, the first plate 631 and the second plate 632 can make full use of the internal space of the upper A-pillar 61 and improve the strength of the reinforcing part 621.

[0047] In some embodiments, see Figure 6 The upper A-pillar 61 includes an inner A-pillar sealing plate 611 and an outer A-pillar reinforcing plate 612. One edge of the inner A-pillar sealing plate 611 is connected to one edge of the outer A-pillar reinforcing plate 612, and the other edge of the inner A-pillar sealing plate 611 is connected to the other edge of the outer A-pillar reinforcing plate 612. The inner A-pillar sealing plate 611 and the outer A-pillar reinforcing plate 612 form an A-pillar chamber Q60. A reinforcing tube 62 is disposed within the A-pillar chamber Q60. The reinforcing tube 62 is connected to the outer A-pillar reinforcing plate 612.

[0048] Optionally, the inner A-pillar end plate 611 and the outer A-pillar reinforcing plate 612 can be connected by welding.

[0049] Optionally, a portion of the reinforcing tube 62 is connected to the outer reinforcing plate 612 of the A-pillar, and another portion of the reinforcing tube 62 is spaced apart from the outer reinforcing plate 612 of the A-pillar, with a gap of approximately 2 mm to 4 mm between them. For example, the gap can be 2 mm, 3 mm, or 4 mm.

[0050] In some embodiments, see Figure 6 The cross-section of the A-pillar chamber Q60 is approximately triangular. A reinforcing tube 62 is positioned near one side of the triangle. A reinforcing member 63 connects to the reinforcing tube 62 and is located at the corner of the triangle corresponding to that side. This allows for full utilization of the space within the A-pillar chamber Q60.

[0051] Optionally, the A-pillar outer reinforcing plate 612 includes a first plate segment 6121 and a second plate segment 6122 connected by bending. One end of the first plate segment 6121 is connected to one side edge of the A-pillar inner sealing plate 611. One end of the second plate segment 6122 is connected to the other side edge of the A-pillar inner sealing plate 611. A reinforcing tube 62 is connected to the first plate segment 6121. A reinforcing member 63 is located between the A-pillar inner sealing plate 611 and the second plate segment 6122.

[0052] Optionally, the reinforcing tube 62 can be connected to the first plate segment 6121 by welding.

[0053] In some embodiments, see Figure 5 The plurality of reinforcing parts 621 include a first reinforcing part 621a, a second reinforcing part 621b, and a third reinforcing part 621c. The first reinforcing part 621a is located on the side of the second reinforcing part 621b that faces forward along the length X of the vehicle 1, and the third reinforcing part 621c is located on the side of the second reinforcing part 621b that faces rearward along the length X of the vehicle 1. The cross-sectional area of ​​the first reinforcing part 621a is smaller than that of the second reinforcing part 621b, and the cross-sectional area of ​​the third reinforcing part 621c is smaller than that of the second reinforcing part 621b. The reinforcing member 63 connects to the third reinforcing part 621c.

[0054] At the position corresponding to the first reinforcing part 621a on the upper A-pillar 61, the first reinforcing part 621a is closely attached to the outer reinforcing plate 612 of the upper A-pillar 61 and connected by CO2 welding. At the position corresponding to the second reinforcing part 621b on the upper A-pillar 61, due to ergonomic factors such as the headroom of the passenger compartment, the cross-sectional area of ​​the cavity of the upper A-pillar 61 shrinks sharply at this location, forming a bending risk zone P60. The second reinforcing part 621b, with its increased area, can provide reinforcement support to this sharply shrinking area. At the position corresponding to the third reinforcing part 621c on the upper A-pillar 61, the shear force locking angle along the length direction X of the vehicle 1 increases sharply, forming another bending risk zone P60. By adding a reinforcing member 63, a structural reinforcement function can be provided to ensure that the upper A-pillar 61 does not bend at this location.

[0055] Therefore, in this embodiment, the first reinforcing part 621a, the second reinforcing part 621b, the third reinforcing part 621c and the reinforcing member 63 are respectively arranged in each bending risk area P60 of the upper A-pillar 61 to achieve a reliable reinforcement effect on the upper A-pillar 61.

[0056] In some embodiments, see Figures 6 to 8 The cross-sectional area of ​​the first reinforcing part 621a is greater than that of the main body 622, the cross-sectional area of ​​the second reinforcing part 621b is greater than that of the main body 622, and the cross-sectional area of ​​the third reinforcing part 621c is greater than that of the main body 622.

[0057] Optionally, the cross-sectional area of ​​the first reinforcing part 621a is S91, the cross-sectional area of ​​the second reinforcing part 621b is S92, the cross-sectional area of ​​the third reinforcing part 621c is S93, and the cross-sectional area of ​​the main body 622 is S90. S91 is between 1.05 and 1.1 times S90, for example, S91=1.05×S90, S91=1.06×S90, S91=1.07×S90, S91=1.08×S90, S91=1.09×S90, S91=1.1×S90. S92 is between 1.1 and 1.3 times S90, for example, S92=1.1×S90, S92=1.18×S90, S92=1.2×S90, S92=1.3×S90. S93 is between 1.03 and 1.05 times S90. For example, S93 = 1.03 × S90, S93 = 1.04 × S90, and S93 = 1.05 × S90.

[0058] In some embodiments, see Figure 9 The surface of the reinforcing part 621 protrudes outward relative to the surface of the main body 622, and the surface of the reinforcing part 621 is smoothly connected to the surface of the main body 622.

[0059] In some embodiments, see Figure 9 The outer circumferential surface of the reinforcing tube 62 includes a smoothly connected reference surface area P61, a forming surface area P62, a convex surface area P63, and a transition surface area P64. The reference surface area P61 is arc-shaped. The forming surface area P62 connects to one circumferential side of the reference surface area P61. The transition surface area P64 connects to the other circumferential side of the reference surface area P61. The convex surface area P63 connects the forming surface area P62 and the transition surface area P64. The draft angle of the transition surface area P64 is less than 1.5°. The transition radius (R) between the convex surface area P63 and the transition surface area P64 is greater than 5 times the wall thickness of the reference surface area P61. The wall thickness of the forming surface area P62 is greater than 2 times the wall thickness of the reference surface area P61.

[0060] In this way, the surface of the reinforcing tube 62 can smoothly transition from the main body 622 to the reinforcing part 621, reducing processing difficulty and improving processing quality. Furthermore, by increasing the wall thickness of the forming surface area P62, the strength of the reinforcing part 621 can be further increased, thereby further improving the reinforcing effect.

[0061] According to this embodiment, the A-pillar assembly 60 can be made possible by the cooperation of the reinforcing tube 62 and the reinforcing member 63 to ensure that the bending amount of the upper A-pillar 61 during the transmission and absorption of impact force and kinetic energy is minimal, thereby ensuring the integrity of the door ring structure of vehicle 1, improving the safety of the passenger compartment, and stably transmitting the impact force and kinetic energy to the B-pillar. By fully utilizing the heating tube 62 and the reinforcing member 63 in the A-pillar cavity Q60, no space needs to be occupied in the passenger compartment, thus having a wide range of applications.

[0062] Specifically, compared with the traditional A-pillar assembly 60 with welded inner and outer panels, the cavity cross-sectional area of ​​the upper A-pillar 61 of the A-pillar assembly 60 in this embodiment can be reduced by at least 30%, while also improving the overall bending resistance by 42%.

[0063] In this embodiment, during the 40% offset crash test of Vehicle 1 in the NCAP (New Car Assessment Program), the impact force is transmitted through the front bumper beam assembly 10 to the upper side beam assembly 20, and then through the upper side beam assembly 20 to the A-pillar assembly 60. A portion of the impact force reaching the A-pillar assembly 60 is transmitted through the upper A-pillar 61 to the B-pillar 400, and another portion is transmitted to the sill beam 300, ultimately reaching the rear assembly 500. The stable transmission of impact force and kinetic energy through the A-pillar assembly 60, while ensuring minimal deformation of the A-pillar assembly 60, guarantees the structural stability of the door ring structure of Vehicle 1.

[0064] Therefore, in this embodiment, vehicle 1 can achieve a stable force transmission path, maximize energy absorption within a limited development structure, and ultimately meet the five-star safety requirements of the 40% offset crash test.

[0065] Specifically, vehicle 1 in this embodiment can achieve a five-star safety rating in the 40% offset crash test in LATINNCAP (LATIN New Car Assessment Program).

[0066] The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the above preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solutions of this application should not depart from the spirit and scope of the technical solutions of this application.

Claims

1. An A-pillar assembly, characterized in that, include: The upper A-pillar extends rearward along a first direction and forms multiple bending risk zones, which are spaced apart along the first direction. The upper A-pillar defines the A-pillar chamber. A reinforcing tube is disposed in the cavity of the A-pillar and connected to the upper A-pillar. The reinforcing tube has multiple reinforcing sections, which are spaced apart along the length of the reinforcing tube. Each reinforcing section corresponds to a bending risk area. A reinforcing member is connected to the reinforcing part to enhance the strength of the reinforcing part.

2. The A-pillar assembly according to claim 1, characterized in that: The plurality of reinforcing portions include a first reinforcing portion, a second reinforcing portion and a third reinforcing portion, wherein the first reinforcing portion is located on the side of the second reinforcing portion that is forward along a first direction, and the third reinforcing portion is located on the side of the second reinforcing portion that is rearward along the first direction; The cross-sectional area of ​​the first reinforcing part is smaller than that of the second reinforcing part, the cross-sectional area of ​​the third reinforcing part is smaller than that of the second reinforcing part, and the reinforcing member is connected to the third reinforcing part.

3. The A-pillar assembly according to claim 2, characterized in that: The reinforcing tube also includes a main body, and the first reinforcing part, the second reinforcing part and the third reinforcing part are connected to the main body at intervals along the length direction of the main body. The cross-sectional area of ​​the first reinforcing part is larger than the cross-sectional area of ​​the main body, the cross-sectional area of ​​the second reinforcing part is larger than the cross-sectional area of ​​the main body, and the cross-sectional area of ​​the third reinforcing part is larger than the cross-sectional area of ​​the main body.

4. The A-pillar assembly according to claim 1, characterized in that: The reinforcing member includes a first plate and a second plate. One end of the first plate is connected to one radial side of the reinforcing tube, and one end of the second plate is connected to the other radial side of the reinforcing tube. The other end of the first plate is bent and connected to the other end of the second plate.

5. The A-pillar assembly according to claim 1, characterized in that: The upper A-pillar includes an inner A-pillar sealing plate and an outer A-pillar reinforcing plate. One side edge of the inner A-pillar sealing plate is connected to one side edge of the outer A-pillar reinforcing plate, and the other side edge of the inner A-pillar sealing plate is connected to the other side edge of the outer A-pillar reinforcing plate. The inner A-pillar sealing plate and the outer A-pillar reinforcing plate form the A-pillar cavity. The reinforcing tube is disposed in the A-pillar cavity and connected to the outer A-pillar reinforcing plate.

6. The A-pillar assembly according to claim 5, characterized in that: The A-pillar outer reinforcing plate includes a first plate segment and a second plate segment that are bent and connected; one end of the first plate segment is connected to one side edge of the inner sealing plate of the A-pillar, and one end of the second plate segment is connected to the other side edge of the inner sealing plate of the A-pillar; the reinforcing tube is connected to the first plate segment, and the reinforcing member is located between the inner sealing plate of the A-pillar and the second plate segment.

7. The A-pillar assembly according to claim 1, characterized in that: The reinforcing tube also includes a main body, and a plurality of reinforcing parts are connected to the main body at intervals along the extension direction of the main body. The surface of the reinforcing part is convex relative to the surface of the main body, and the surface of each reinforcing part is smoothly connected to the surface of the main body.

8. The A-pillar assembly according to claim 7, characterized in that: The outer circumferential surface of the reinforcing tube includes a smoothly connected reference surface area, a forming surface area, an outwardly convex surface area, and a transition surface area. The reference surface area is arc-shaped. The forming surface area connects to one side of the reference surface area in the circumferential direction. The transition surface area connects to the other side of the reference surface area in the circumferential direction. The outwardly convex surface area connects the forming surface area and the transition surface area.

9. A front assembly, characterized in that, include: Front bumper beam assembly; The A-pillar assembly as described in any one of claims 1 to 8, wherein one end of the A-pillar assembly along a first direction is connected to the front bumper beam assembly, one end of the A-pillar assembly along a second direction is used to connect to the B-pillar, and the other end of the A-pillar assembly along the second direction is used to connect to the door sill beam.

10. A vehicle, characterized in that, Includes the front assembly as described in claim 9.

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