A column assembly and vehicle body

Abstract

The utility model provides an A-pillar assembly and a car body, the A-pillar assembly comprises an A-pillar roof side rail reinforcer and an A-pillar reinforcer which are connected, the A-pillar assembly further comprises a reinforcing tubular beam, the reinforcing tubular beam is arranged in an inner cavity in a penetrating mode, and the inner cavity comprises an inner cavity of the A-pillar roof side rail reinforcer and an inner cavity of the A-pillar reinforcer; and the reinforced tubular beam is connected with the A upright post upper edge beam reinforcer and the A upright post reinforcer. According to the technical scheme, the strength of the A column assembly is improved, the reinforcing structure is simplified, then the weight cost of the A column assembly is reduced, and the weight of a vehicle body is reduced on the premise that the safety performance is met.

Description

Technical Field

[0001] The utility model relates to the technical field of automobiles, and more specifically, to an A-pillar assembly and a vehicle body. Background Art

[0002] With the increasing richness of automobile products and the improvement of people's consumption level, automobile consumers have higher and higher requirements for the quality of automobile products. Passive safety of the vehicle body has increasingly become the focus of consumers' attention, and vehicle body safety technology is the key research object of each automobile enterprise. At present, the collision safety standards are constantly upgraded. In order to meet the increasingly stringent collision requirements, the safety design of the vehicle body is becoming more and more important. The side A-pillar is an important part of the vehicle body. The A-pillar is an important framework of the vehicle body, and its structure has a direct impact on the stiffness, strength and safety of the whole vehicle.

[0003] As shown in the A-pillar assembly Figure 1 An A-pillar reinforcement 1, an upper side beam reinforcement 2 of the A-pillar and a sill reinforcement 3 are connected to the engine compartment, the floor sill, the B-pillar and the front roof cross member. In order to reduce the intrusion amount into the occupant compartment during a 25% small-offset collision, the structural requirements for the A-pillar assembly are getting higher and higher. Therefore, how to improve the strength of the A-pillar structure to enhance the safety performance of the vehicle has become the focus of attention during the vehicle body development process.

[0004] Existing solutions mostly strengthen locally by increasing the material thickness and the cavity cross-sectional area or adding patch plates. This makes the structure of the upper side beam of the A-pillar more complex and the vehicle body heavier, which does not conform to the current transformation trend of automotive electrification and lightweighting. Summary of the Utility Model

[0005] In view of this, the purpose of the embodiments of the present application is to provide an A-pillar assembly, which can solve the problem of the increasing weight of the vehicle body in the prior art.

[0006] To achieve the above technical purpose, the technical solution adopted in the present application is as follows:

[0007] In a first aspect, the embodiments of the present application provide an A-pillar assembly, including a connected upper side beam reinforcement of the A-pillar and an A-pillar reinforcement, and further including:

[0008] A reinforcing pipe beam, the reinforcing pipe beam runs through the inner cavities of the upper side beam reinforcement of the A-pillar and the A-pillar reinforcement, and is connected to both the upper side beam reinforcement of the A-pillar and the A-pillar reinforcement.

[0009] Further, it further includes a sill reinforcement, and the upper side beam reinforcement of the A-pillar, the A-pillar reinforcement and the sill reinforcement are connected in sequence;

[0010] The end of the reinforcing pipe beam away from the upper side beam reinforcement of the A-pillar is connected to the sill reinforcement.

[0011] Further, it further includes a mounting bracket which is installed inside the inner cavity of the A-pillar reinforcement. The reinforcing pipe beam is connected to the lower part of the A-pillar reinforcement through the mounting bracket.

[0012] Further, the reinforcing pipe beam is welded to the A-pillar reinforcement. The number of welds between the reinforcing pipe beam and the A-pillar reinforcement is multiple, and all the welds are uniformly arranged along the extending direction of the A-pillar reinforcement.

[0013] Further, it further includes a weakening structure which is arranged in the bending area between the upper side beam reinforcement of the A-pillar and the A-pillar reinforcement, so that the A-pillar reinforcement can collapse towards the interior of the vehicle body at the weakening structure.

[0014] Further, the weakening structure is a through hole.

[0015] Further, the shape of the through hole is triangular.

[0016] In a second aspect, the present application proposes a vehicle body including the above-mentioned A-pillar assembly.

[0017] The invention adopting the above technical solution has the following advantages:

[0018] In the technical solution provided by the present application, a reinforcing pipe beam is provided. The reinforcing pipe beam penetrates through the inner cavities of the upper side beam reinforcement of the A-pillar and the A-pillar reinforcement, and is connected to both the upper side beam reinforcement of the A-pillar and the A-pillar reinforcement, improving the strength of the A-pillar assembly, simplifying the reinforcing structure, and further reducing the weight of the A-pillar assembly, reducing the weight of the vehicle body on the premise of meeting the safety performance.

[0019] In the technical solution provided by the present application, a weakening structure is arranged in the bending area. When the vehicle is subjected to a frontal collision force, the A-pillar reinforcement can collapse at the weakening structure, reducing the intrusion amount into the occupant compartment and improving the safety of the vehicle occupants. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present application can be further illustrated by the non-limiting embodiments given in the drawings. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can also be obtained based on these drawings without creative efforts.

[0021] Figure 1 Schematic structural diagram of an A-pillar assembly in the prior art.

[0022] Figure 2 Schematic structural diagram of the present application.

[0023] Figure 3 Schematic structural diagram of the reinforcing pipe beam.

[0024] Figure 4 Schematic diagram of the connection method between the reinforcement pipe beam and the upper side beam reinforcement of the A-pillar

[0025] Figure 5 Schematic diagram of the connection method between the reinforcement pipe beam and the A-pillar reinforcement

[0026] Figure 6 Schematic diagram of the connection method between the reinforcement pipe beam and the sill reinforcement

[0027] Figure 7 Schematic diagram of the force transmission path of the A-pillar assembly

[0028] Figure 8 Schematic diagram of the weakening structure

[0029] Icon: 1 - A-pillar reinforcement; 2 - Upper side beam reinforcement of the A-pillar; 3 - Sill reinforcement; 4 - Reinforcement pipe beam; 41 - Upper section of the A-pillar; 42 - Transition section; 43 - Lower section of the A-pillar; 5 - First weld; 6 - Mounting bracket; 7 - Second weld; 8 - Rear part of the side panel; 9 - Front cross member of the roof panel; 10 - Floor cross member; 11 - Floor sill; 12 - Weakening structure Specific implementation manner

[0030] The following will describe the present application in detail with reference to the accompanying drawings and specific embodiments. It should be noted that in the accompanying drawings or the description of the specification, similar or identical parts are all denoted by the same reference numerals, and the implementation manners not illustrated or described in the accompanying drawings are the forms known to those of ordinary skill in the art. In the description of the present application, the terms "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance

[0031] In response to the technical problems raised in the background art, the present embodiment provides an A-pillar assembly, as Figure 2 shown, including an A-pillar reinforcement 1, an upper side beam reinforcement 2 of the A-pillar, a sill reinforcement 3, and a reinforcement pipe beam 4. The A-pillar reinforcement 1, the upper side beam reinforcement 2 of the A-pillar, and the sill reinforcement 3 are connected in sequence to form the A-pillar assembly of the prior art. In the present embodiment, a reinforcement pipe beam 4 is provided to improve the strength of the A-pillar assembly

[0032] The reinforcing pipe beam 4 is disposed through the inner cavity body, and the inner cavity body includes the inner cavity of the A-column reinforcing member 1 and the inner cavity of the upper side beam reinforcing member 2 of the A-column. The reinforcing pipe beam 4 is fixedly connected to both the A-column reinforcing member 1 and the upper side beam reinforcing member 2 of the A-column. In this embodiment, the inner cavities of the A-column reinforcing member 1 and the upper side beam reinforcing member 2 of the A-column are communicated with each other. The inner cavity can be understood as the inner side of the structure, and the inner side is located inside the vehicle body. For example, the inner cavity of the A-column reinforcing member 1 can be understood as the inner side of the A-column reinforcing member 1, and the inner cavity of the upper side beam reinforcing member 2 of the A-column can be understood as the inner side of the upper side beam reinforcing member 2 of the A-column.

[0033] Compared with the reinforcing members of other structural shapes, the reinforcing pipe beam 4 is easier to manufacture and install, and at the same time saves layout space.

[0034] As Figure 3 shown, the reinforcing pipe beam 4 includes an upper section 41 of the A-column, a transition section 42 and a lower section 43 of the A-column. The upper section 41 of the A-column is fixedly connected to the upper side beam reinforcing member 2 of the A-column. The lower section 43 of the A-column is fixedly connected to the A-column reinforcing member 1. The transition section 42 has a bend and corresponds to the bend area between the A-column reinforcing member 1 and the upper side beam reinforcing member 2 of the A-column. The transition section 42 is shaped to follow the bend area. The perimeter difference between the upper section 41 of the A-column, the transition section 42 and the lower section 43 of the A-column is controlled within 15%. The forming process can be selected as liquid bulging (tensile strength Rm~780-900 MPa) or hot gas bulging forming (tensile strength Rm~1300-1650 MPa).

[0035] As Figure 4 shown, the reinforcing pipe beam 4 is connected to the upper side beam reinforcing member 2 of the A-column by hot melt welding (carbon dioxide shielded welding or laser welding). The number of the first weld seams 5 is multiple, and they are arranged on both sides of the reinforcing pipe beam 4 and are evenly arranged along the extending direction of the upper side beam reinforcing member 42 of the A-column, so that the welding points of the reinforcing pipe beam 4 and the upper side beam reinforcing member 2 of the A-column are evenly arranged, which is beneficial to improving the connection stability between the reinforcing pipe beam 4 and the upper side beam reinforcing member 2 of the A-column.

[0036] As Figure 5 shown, an installation bracket 6 is provided in the inner cavity of the A-column reinforcing member 1. The installation bracket 6 is fixed on the A-column reinforcing member 1. The installation bracket 6 is of an L-shaped structure. The upper part of the reinforcing pipe beam 4 is welded to the A-column reinforcing member 1 by hot melt welding. The reinforcing pipe beam 4 is connected to the lower part of the A-column reinforcing member 1 through two installation brackets 6. One end of the installation bracket 6 is connected to the reinforcing pipe beam 4 by hot melt welding, and the other end is connected to the A-column reinforcing member 1 by resistance spot welding.

[0037] In at least one embodiment, the reinforcing pipe beam 4 can also be directly connected to the inner cavity of the A-column reinforcing member 1 by welding, or connected to the inner cavity of the A-column reinforcing member 1 through other installation mechanisms.

[0038] AsFigure 6 As shown in the figure, in order to further improve the strength of the A-pillar assembly, the lower end of the reinforcing pipe beam 4 is welded to the sill reinforcement 3. The second weld seams 7 between the reinforcing pipe beam 4 and the sill reinforcement 3 are respectively located on both sides of the reinforcing pipe beam 4, so as to form a complete force transmission path, enabling the force at the front end of the A-pillar to be more effectively transmitted to the lower and rear parts of the vehicle body through the sill, thereby effectively reducing the deformation intrusion amount of the upper part of the occupant compartment.

[0039] Specifically:

[0040] The impact force from the front is dispersed into two force transmission paths through the penetrating reinforcing pipe beam 4 and transmitted to the rear and lower parts of the vehicle body. One is transmitted to the rear part 8 of the side panel and the front roof cross member 9 through the upper side beam reinforcement 2 of the A-pillar, and the other is transmitted to the floor sill 11 and the floor cross member 10 through the sill reinforcement 3. In this way, the impact force can be effectively transmitted to the entire vehicle body, avoiding the overall slippage of the vehicle body.

[0041] In this embodiment, as Figure 8 shown, a weakening structure 12 is provided in the bending area between the upper side beam reinforcement 2 of the A-pillar and the A-pillar reinforcement 1. When the A-pillar is subjected to a frontal collision force, the A-pillar reinforcement 1 collapses towards the interior of the vehicle body at the weakening structure 12, playing a role in buffering and energy absorption, thereby reducing the deformation of the occupant compartment.

[0042] The weakening structure in this embodiment is a triangular through-hole structure.

[0043] This embodiment also proposes a vehicle body including the above-mentioned A-pillar assembly.

[0044] The above are only the embodiments of the present application and are not used to limit the protection scope of the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. An A-pillar assembly, comprising an A-pillar upper side beam reinforcement and an A-pillar reinforcement connected to each other, characterized in that: Also includes: A reinforced tubular beam is passed through an inner cavity, the inner cavity includes an inner cavity of the A-pillar upper side beam reinforcement and an inner cavity of the A-pillar reinforcement, and the reinforced tubular beam is connected to both the A-pillar upper side beam reinforcement and the A-pillar reinforcement.

2. The A-pillar assembly according to claim 1, characterized in that: It also includes a sill reinforcement, wherein the A-pillar upper side beam reinforcement, the A-pillar reinforcement and the sill reinforcement are connected in sequence; The end of the reinforced tubular beam away from the A-pillar upper side beam reinforcement is connected to the door sill reinforcement.

3. The A-pillar assembly according to claim 1, characterized in that: It also includes a mounting bracket, which is mounted in the inner cavity of the A-pillar reinforcement, and the reinforced pipe beam is connected to the lower part of the A-pillar reinforcement through the mounting bracket.

4. The A-pillar assembly according to claim 1, characterized in that: The reinforced tubular beam is welded to the A-pillar reinforcement, and there are multiple welds between the reinforced tubular beam and the A-pillar reinforcement, and all the welds are evenly arranged along the extension direction of the A-pillar reinforcement.

5. The A-pillar assembly according to claim 1, characterized in that: It also includes a weakened structure, which is arranged in a bending area between the A-pillar upper beam reinforcement and the A-pillar reinforcement, so that the A-pillar reinforcement can collapse toward the inside of the vehicle body at the weakened structure.

6. The A-pillar assembly according to claim 5, characterized in that: The weakened structure is a through hole.

7. The A-pillar assembly according to claim 6, characterized in that: The through hole is configured in a triangular shape.

8. A vehicle body, characterized in that: Comprising the A-pillar assembly according to any one of claims 1-7.

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