A body b-pillar reinforcement structure for a frameless door

Abstract

The application discloses a frameless vehicle door body B column reinforcing structure and belongs to the technical field of automobile manufacturing, which comprises a B column inner plate assembly, a B column reinforcing piece and an outer plate reinforcing plate assembly. On the basis of the original B column inner plate assembly, a plurality of Z-direction long holes are arranged on the inner side of the B column inner plate along the body height direction, and the B column reinforcing piece is assembled on the Z-direction long holes. The B column reinforcing piece optimizes the corresponding position intrusion amount of the B column in the collision. The B column inner plate assembly provided with the B column reinforcing piece is welded with the outer plate reinforcing plate assembly, and a closed reinforcing cavity is formed between the B column inner plate assembly and the outer plate reinforcing plate assembly, which can effectively absorb the collision energy and make up for the sharply reduced outer cavity space. The frameless vehicle door body B column reinforcing structure can optimize and correct the corresponding position intrusion amount of the B column in the collision without adjusting the welding tooling, thereby saving the correction period and cost and being beneficial to the lightweight of the new energy vehicle body.

Description

Technical Field

[0001] This invention relates to the field of automobile manufacturing technology, and in particular to a frameless car door B-pillar reinforcement structure. Background Technology

[0002] As people become more aware of vehicle safety, the requirements for vehicle collision performance are also gradually increasing. The B-pillar is crucial in both side and pole impacts. The collision curve of the B-pillar's energy absorption and deformation speed is directly related to the size of the occupant's survival space. Therefore, an effective design of the B-pillar energy absorption structure can reduce the amount of B-pillar intrusion in a collision.

[0003] Most car models now use framed doors with reinforced B-pillar structures, while very few new energy vehicles use frameless doors with reinforced B-pillar structures. Moreover, this type of reinforced structure has many welded parts, large reinforcement components, and is over-designed, which is not conducive to the lightweight requirements of new energy vehicles. At the same time, optimizing and adjusting the intrusion of the B-pillar in a collision can only be done by adding parts or increasing the cross-section of the reinforcement components, increasing the material thickness, etc., which makes the optimization plan complex, the rectification cycle long, and the tooling rectification cost high. Summary of the Invention

[0004] The purpose of this invention is to provide a frameless car door B-pillar reinforcement structure to solve the problems existing in the prior art. It can optimize the intrusion amount of the B-pillar at the corresponding position in a collision without adjusting the welding tooling, saving the rectification cycle and cost, and at the same time, it is conducive to the lightweighting of new energy vehicle bodies.

[0005] To achieve the above objectives, the present invention provides the following solution: The present invention provides a frameless car door B-pillar reinforcement structure, including...

[0006] The B-pillar inner panel assembly, wherein the B-pillar inner panel of the assembly has multiple Z-shaped elongated holes along the vehicle height direction; and

[0007] A B-pillar reinforcement member, wherein the B-pillar reinforcement member is fitted onto the Z-direction elongated hole, and the position of the B-pillar reinforcement member on the Z-direction elongated hole is adjustable; and

[0008] The outer panel reinforcement assembly, the inner panel assembly of the B-pillar on which the B-pillar reinforcement is installed, is welded to the outer panel reinforcement assembly, and a closed reinforcement cavity is formed between the inner panel assembly of the B-pillar and the outer panel reinforcement assembly.

[0009] Preferably, the number of Z-direction elongated holes is four, and the four Z-direction elongated holes are spaced apart and arranged side by side on the inner plate of the B-pillar.

[0010] Preferably, the upper end of the Z-direction elongated hole corresponds to the upper-middle position of the window, and the lower end of the Z-direction elongated hole corresponds to the upper-middle position of the door body section.

[0011] Preferably, the B-pillar reinforcement is made of aluminum alloy material.

[0012] Preferably, the B-pillar reinforcement is of a rectangular body structure, and the cross-section of the B-pillar reinforcement is in the shape of a Chinese character 'Ri' or a Chinese character 'Tian'.

[0013] Preferably, a plurality of mounting holes are formed in the B-pillar reinforcement, and rivets pass through the mounting holes to fix the B-pillar reinforcement on the Z-direction long holes of the B-pillar inner panel assembly.

[0014] Preferably, the number of the mounting holes is four, and the four mounting holes are evenly distributed on the mounting surface of the B-pillar reinforcement.

[0015] The present invention has achieved the following beneficial technical effects compared with the prior art:

[0016] The body B-pillar reinforcement structure of the frameless door in the present invention includes a B-pillar inner panel assembly, a B-pillar reinforcement and an outer panel reinforcement assembly. On the basis of the original B-pillar inner panel assembly, a plurality of Z-direction long holes are arranged along the vehicle body height direction on the inner side of the B-pillar inner panel, and the B-pillar reinforcement is assembled on the Z-direction long holes. The intrusion amount of the corresponding position of the B-pillar during collision is optimized through the B-pillar reinforcement. The B-pillar inner panel assembly with the B-pillar reinforcement is welded to the outer panel reinforcement assembly, and a closed reinforcement cavity is formed between the B-pillar inner panel assembly and the outer panel reinforcement assembly, which can effectively absorb collision energy and compensate for the sharply reduced outer cavity space. The body B-pillar reinforcement structure of the frameless door in the present invention can optimize and rectify the intrusion amount of the corresponding position of the B-pillar during collision without adjusting the welding and assembling tooling, saving the rectification period and cost, and being beneficial to the lightweight of the new energy vehicle body at the same time. Brief Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 It is a schematic structural view of the B-pillar reinforcement;

[0019] Figure 2 It is a schematic overall structural view of the B-pillar inner panel assembly;

[0020] Figure 3 It is a schematic view of the adjustment range of the B-pillar reinforcement;

[0021] Among them, 1, B-pillar reinforcement; 2, Z-direction long hole; 3, rivet; 4, B-pillar inner panel assembly; 5, outer panel reinforcement assembly; 6, mounting hole. Detailed Embodiments

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0023] The purpose of the present invention is to provide a body B-pillar strengthening structure for frameless doors to solve the problems existing in the above-mentioned prior art, optimize and rectify the intrusion amount of the corresponding position of the B-pillar in a collision, without adjusting the welding fixture, save the rectification cycle and cost, and at the same time contribute to the lightweight of new energy vehicle bodies.

[0024] To make the above objects, features and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0025] As Figures 1-3 shown, the present invention provides a B-pillar strengthening structure for a vehicle with frameless doors, including

[0026] an inner B-pillar assembly 4, on which multiple Z-direction long holes 2 are arranged along the vehicle body height direction on the inner B-pillar of the inner B-pillar assembly 4; and

[0027] a B-pillar reinforcement 1, which is assembled on the Z-direction long holes 2, and the position of the B-pillar reinforcement 1 on the Z-direction long holes 2 is adjustable; and

[0028] an outer panel reinforcement assembly 5, the inner B-pillar assembly 4 with the B-pillar reinforcement 1 installed is welded to the outer panel reinforcement assembly 5, and a closed strengthening cavity is formed between the inner B-pillar assembly 4 and the outer panel reinforcement assembly 5.

[0029] In one embodiment, the upper end of the Z-direction long hole 2 corresponds to the middle upper part of the window, and the lower end of the Z-direction long hole 2 corresponds to the middle upper part of the door body part.

[0030] In one embodiment, the B-pillar reinforcement 1 is made of aluminum alloy material, the B-pillar reinforcement 1 is of a rectangular body structure, and the cross-section of the B-pillar reinforcement 1 is in the shape of a Japanese character or a field character. The B-pillar reinforcement 1 is riveted to the inner B-pillar by rivets 3, and there are 4 Z-direction long holes 2 on the inner B-pillar to provide for the B-pillar reinforcement 1 to adjust the installation on the Z-direction long holes 2. When the installation position of the B-pillar reinforcement 1 is different, the corresponding Z-direction height is different, which can optimize the intrusion amount of the corresponding position of the B-pillar in a collision.

[0031] The structure of the provided B-pillar reinforcement 1 is as Figure 1As shown, there are 4 mounting holes 6 provided; the B-pillar reinforcement 1 and the inner B-pillar panel are connected by 4 rivets 3. There are 4 Z-direction long holes 2 on the inner B-pillar panel. The B-pillar reinforcement 1 can be adjusted in the Z direction on the Z-direction long holes 2, and the adjustment range is controlled within L( Figure 3 ). After the assembled inner B-pillar panel 4 is installed, it is welded to the outer panel reinforcement assembly 5. After welding, a closed reinforcement cavity is formed, which can effectively absorb collision energy and compensate for the sharply reduced outer cavity space.

[0032] After the actual vehicle collision in the later stage, the actual vehicle can be optimized according to the collision curve of the energy absorption and deformation speed of the B-pillar, which can be achieved by adjusting the position of the B-pillar reinforcement 1 without rectifying the tooling.

[0033] The body B-pillar reinforcement structure of the frameless door designed by the present invention has the following characteristics:

[0034] 1. The structure is simple and has high strength. The intrusion amount at the corresponding position of the B-pillar collision can be adjusted and optimized by adjusting the position of the B-pillar reinforcement 1.

[0035] 2. It adopts aluminum alloy material, with a daily character or a field character cross-section. The parts are small and the structure is strong, which is beneficial to the energy absorption of the B-pillar and the lightweight of the vehicle body.

[0036] 3. It adopts a riveted structure, which saves welding tooling and reduces the number of welded parts.

[0037] 4. It effectively compensates the strength of the reinforcement cross-section from the inner cavity space, so as to leave enough styling and installation space for the outer decorative panel.

[0038] The body B-pillar reinforcement structure of the frameless door designed by the present invention has a simple structure, good versatility and good adjustability. By adjusting the position of the B-pillar reinforcement 1, the intrusion amount at the corresponding position of the B-pillar in the collision can be optimized and rectified without adjusting the welding tooling, saving the rectification cycle and cost. At the same time, the B-pillar reinforcement 1 does not need to be too large or too long, and there will be no over-design, which is beneficial to the lightweight of the new energy vehicle body. The cross-section of this reinforcement is not limited to the daily character or field character structure, and any structure derived therefrom is acceptable.

[0039] It should be noted that for those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention, and any reference signs in the claims should not be regarded as limiting the claimed rights.

[0040] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A frameless car door B-pillar reinforcement structure, characterized in that: include The B-pillar inner panel assembly has multiple Z-shaped elongated holes along the vehicle height direction on its inner panel. The upper ends of these Z-shaped elongated holes correspond to the upper-middle position of the window, and the lower ends correspond to the upper-middle position of the door body section. B-pillar reinforcement, wherein the B-pillar reinforcement is mounted on the Z-direction elongated hole, and the position of the B-pillar reinforcement on the Z-direction elongated hole is adjustable; as well as The outer panel reinforcement assembly, the inner panel assembly of the B-pillar on which the B-pillar reinforcement is installed, is welded to the outer panel reinforcement assembly, and a closed reinforcement cavity is formed between the inner panel assembly of the B-pillar and the outer panel reinforcement assembly.

2. The vehicle B-pillar reinforcement structure for frameless doors according to claim 1, characterized in that: The number of Z-direction elongated holes is four, and the four Z-direction elongated holes are spaced apart and arranged side by side on the inner plate of the B-pillar.

3. The vehicle B-pillar reinforcement structure for frameless doors according to claim 1, characterized in that: The B-pillar reinforcement is made of aluminum alloy.

4. The vehicle B-pillar reinforcement structure for frameless doors according to claim 1, characterized in that: The B-pillar reinforcement is a rectangular structure, and its cross-section is either H-shaped or Grid-shaped.

5. The vehicle B-pillar reinforcement structure for frameless doors according to claim 1, characterized in that: The B-pillar reinforcement has multiple mounting holes, and rivets pass through the mounting holes to fix the B-pillar reinforcement to the Z-direction elongated hole of the B-pillar inner panel assembly.

6. The vehicle B-pillar reinforcement structure for frameless doors according to claim 5, characterized in that: The number of mounting holes is four, and the four mounting holes are evenly distributed on the mounting surface of the B-pillar reinforcement.

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