An automobile A-pillar and an automobile

By installing a reinforcing plate between the outer and inner panels of the A-pillar and using obtuse and acute angles to decompose stress, the problem of A-pillar weld tearing was solved, structural strength and fatigue life were improved, and driving safety was ensured.

CN224546102UActive Publication Date: 2026-07-24WUHAN JIANGXIA CHUNENG AUTOMOBILE TECHNOLOGY R&D CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
WUHAN JIANGXIA CHUNENG AUTOMOBILE TECHNOLOGY R&D CO LTD
Filing Date
2025-10-21
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

In existing technologies, the welds on the A-pillar are prone to failure and tearing during a collision, leading to stress concentration and threatening the safety of passengers. Furthermore, the reinforcement plate cannot effectively disperse energy.

Method used

A reinforcing plate is installed between the outer and inner panels of the A-pillar. The reinforcing plate transfers and distributes forces between the inner and outer panels, forming a reinforced space. The obtuse and acute angles are used in the design to decompose stress and improve the structural strength.

Benefits of technology

It effectively avoids weld tearing, reduces stress concentration, improves structural fatigue life and strength, and ensures driving and riding safety.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224546102U_ABST
    Figure CN224546102U_ABST
Patent Text Reader

Abstract

The utility model discloses a kind of automobile A column and automobile, automobile A column, including side-by-side arrangement's A column outer plate and A column inner plate, and be set between the A column outer plate and the A column inner plate's reinforcing plate, the reinforcing plate one end is connected with the A column outer plate, the other end is connected with the A column inner plate, the reinforcing plate and the welding spot on the A column outer plate abut, the reinforcing plate and the A column inner plate form reinforcing space.This utility model is by being set between A column outer plate and A column inner plate and being connected with A column outer plate, A column inner plate reinforcing plate, in collision, force can be efficiently transmitted and shunted between inner and outer plate by reinforcing plate, stress dispersion, and then avoid the situation that "welding point tear" appears on A column outer plate.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model belongs to the field of automotive technology, specifically relating to an A-pillar for automobiles and an automobile. Background Technology

[0002] The A-pillar, connecting the roof and front doors and supporting the windshield, is a crucial safety component in the vehicle's structure. In a frontal offset collision (such as when the front of the vehicle hits an obstacle), it bears the majority of the impact force, preventing intrusion into the passenger compartment and preserving a survival space for occupants. During a collision or under extreme stress (severe conditions), the immense impact force is transmitted to the base area where the A-pillar connects to the front bumper. The weld joints in this area are prone to failure due to the immense shear force, leading to increased A-pillar deformation and threatening occupant safety. Current solutions involve adding a reinforcing plate to the front bumper's "I" crossbeam and the outer A-pillar panel, secured with bolts. This plate protects the weld joints from failure and tearing at the front of the A-pillar assembly. However, in existing solutions, the reinforcing plate only connects to the outer A-pillar panel. The energy absorbed by the plate cannot be effectively dissipated or dispersed, potentially causing stress concentration around the connection point and leading to tearing of the outer A-pillar panel elsewhere. Utility Model Content

[0003] The purpose of this utility model is to provide an A-pillar for automobiles and an automobile. By setting a reinforcing plate between the outer and inner A-pillar panels and connecting them, in the event of a collision, the force can be efficiently transmitted and diverted between the inner and outer panels through the reinforcing plate, thus dispersing stress and preventing "weld tearing" from occurring on the outer A-pillar panel.

[0004] The technical solution adopted by this utility model to solve its technical problem is, in the first aspect, to provide an A-pillar for automobiles, including an outer A-pillar panel and an inner A-pillar panel arranged side by side, and a reinforcing plate disposed between the outer A-pillar panel and the inner A-pillar panel. One end of the reinforcing plate is connected to the outer A-pillar panel, and the other end is connected to the inner A-pillar panel. The reinforcing plate abuts against a weld point on the outer A-pillar panel, and the reinforcing plate and the inner A-pillar panel form a reinforcing space.

[0005] In this embodiment, the reinforcing plate includes a first plate, a second plate, a third plate, a fourth plate, and a fifth plate that are integrally connected. The first plate and the fifth plate are connected to the inner panel of the A-pillar, the third plate is connected to the outer panel of the A-pillar, and the second plate, the third plate, the fourth plate, and the inner panel of the A-pillar form a reinforcing space.

[0006] In this embodiment of the application, the angle between the first plate and the fifth plate is an obtuse angle.

[0007] In this embodiment of the application, the angle between the second plate and the fourth plate faces the inner plate of the A-pillar.

[0008] In this embodiment of the application, the angle between the second plate and the fourth plate is an acute angle.

[0009] In this embodiment of the application, the reinforcing plate further includes a sixth plate and a seventh plate. The sixth plate is connected to the second plate, the third plate, and the fourth plate. The seventh plate is connected to the second plate, the third plate, and the fourth plate. The sixth plate and the seventh plate abut against the outer panel of the A-pillar.

[0010] In this embodiment of the application, the width of the sixth plate is smaller than the width of the second plate.

[0011] In this embodiment of the application, the width of the sixth plate is smaller than the width of the outer plate of the A-pillar.

[0012] In this embodiment, the car A-pillar further includes a reinforcing shell, one end of which is connected to the third plate and the other end of which is connected to the outer plate of the A-pillar.

[0013] Secondly, a car is proposed, including an A-pillar as described in the first aspect.

[0014] The beneficial effects of this utility model are as follows: 1. The present invention proposes an A-pillar for automobiles, which, by setting a reinforcing plate between the outer and inner A-pillar panels and connecting them, allows force to be efficiently transmitted and distributed between the inner and outer panels during a collision, thereby dispersing stress and preventing "weld tearing" from occurring on the outer A-pillar panel. 2. The present invention proposes an A-pillar for automobiles, wherein the angle between the first plate and the second plate is an obtuse angle, and the angle between the fourth plate and the fifth plate is an obtuse angle. In this way, when the outer plate of the A-pillar is subjected to force, the force on the outer plate of the A-pillar will be transferred to the third plate, and then the force on the third plate will be transferred to the first plate and the fifth plate through the second plate and the fourth plate, and then to the inner plate of the A-pillar. The force flow transition is smoother, significantly reducing the stress concentration effect and improving the fatigue life of the structure. 3. The present invention proposes an A-pillar for automobiles, wherein the angle between the second plate and the fourth plate faces the inner plate of the A-pillar, and the second plate and the fourth plate form an angle. When the third plate is subjected to a force, the force will be decomposed into multiple components through the connection points (the connection point between the second plate and the third plate, and the connection point between the third plate and the fourth plate). The second plate and the fourth plate also participate in bearing the load, thereby sharing the stress on the inner plate of the A-pillar. 4. The present invention proposes an A-pillar for automobiles, wherein the angle between the second plate and the fourth plate is an acute angle, and the force is mainly transmitted through the axial pressure / tension of the second plate and the fourth plate, thereby improving the structural strength of the A-pillar for automobiles. Attached Figure Description

[0015] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention. In these drawings, similar reference numerals are used to denote similar elements. The drawings described below are some embodiments of the present invention, but not all embodiments. Other drawings will be readily available to those skilled in the art based on these drawings without any inventive effort.

[0016] Figure 1 This is a schematic diagram of an A-pillar of a car according to an embodiment of the present utility model; Figure 2 This is a side view of an A-pillar of a car according to an embodiment of the present utility model; Figure 3 This is a schematic diagram of the installation of an A-pillar and its outer panel in an automobile, according to an embodiment of the present utility model. Figure 4 This is a schematic diagram of the installation of an A-pillar and its inner panel in a car, according to an embodiment of the present invention.

[0017] In the diagram: 1. Outer A-pillar panel; 2. Inner A-pillar panel; 3. Reinforcing plate; 31. First plate; 32. Second plate; 33. Third plate; 34. Fourth plate; 35. Fifth plate; 36. Sixth plate; 37. Seventh plate; 4. Reinforcing space; 5. Reinforcing shell. Detailed Implementation

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model and the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort. Furthermore, the design orientation only indicates the relative positional relationship between the components, not the absolute positional relationship.

[0019] Firstly, this utility model embodiment provides an A-pillar for automobiles; please refer to [link / reference]. Figure 1 , Figure 2 , Figure 3 , Figure 4 It mainly includes the outer A-pillar panel 1, the inner A-pillar panel 2, and the reinforcing panel 3.

[0020] In this embodiment, the car A-pillar includes an outer A-pillar panel 1, an inner A-pillar panel 2, and a reinforcing plate 3. The reinforcing plate 3 is arranged between the outer A-pillar panel 1 and the inner A-pillar panel 2. One end of the reinforcing plate 3 is connected to the outer A-pillar panel 1, and the other end is connected to the inner A-pillar panel 2. The reinforcing plate 3 abuts against the weld points on the outer A-pillar panel 1, and the reinforcing plate 3 and the inner A-pillar panel 2 form a reinforcing space 4. By providing a reinforcing plate 3 connected to the outer A-pillar panel 1 and the inner A-pillar panel 2 between them, this application allows force to be efficiently transmitted and distributed between the inner and outer panels during a collision, dispersing stress and thus preventing "weld point tearing" on the outer A-pillar panel 1.

[0021] In one possible implementation, the reinforcing plate 3 includes a first plate 31, a second plate 32, a third plate 33, a fourth plate 34, and a fifth plate 35 that are integrally connected. The first plate 31 and the fifth plate 35 are connected to the inner plate 2 of the A-pillar by bolts. The third plate 33 is welded to the outer plate 1 of the A-pillar. The second plate 32, the third plate 33, the fourth plate 34 and the inner plate 2 of the A-pillar form a reinforcing space 4.

[0022] Furthermore, the angle between the first plate 31 and the second plate 32 is an obtuse angle, and the angle between the fourth plate 34 and the fifth plate 35 is also an obtuse angle. In this way, when the outer plate 1 of the A-pillar is subjected to force, the force on the outer plate 1 of the A-pillar will be transferred to the third plate 33. Then, the force on the third plate 33 will be transferred to the first plate 31 and the fifth plate 35 through the second plate 32 and the fourth plate 34, and then to the inner plate 2 of the A-pillar. The force flow transition is smoother, which significantly reduces the stress concentration effect and improves the fatigue life of the structure.

[0023] Furthermore, the angle between the second plate 32 and the fourth plate 34 faces the inner plate 2 of the A-pillar. The second plate 32 and the fourth plate 34 form an angle. When the third plate 33 is subjected to a force, the force will be decomposed into multiple components through the connection points (the connection point between the second plate 32 and the third plate 33, and the connection point between the third plate 33 and the fourth plate 34). The second plate 32 and the fourth plate 34 also participate in bearing the load, thereby sharing the stress on the inner plate 2 of the A-pillar.

[0024] Preferably, the angle between the second plate 32 and the fourth plate 34 is an acute angle, and the force is mainly transmitted through the axial pressure / tension of the second plate 32 and the fourth plate 34, which improves the structural strength of the car A-pillar.

[0025] In one possible implementation, the reinforcing plate 3 further includes a sixth plate 36 and a seventh plate 37. The sixth plate 36 is edge-connected to the second plate 32, the third plate 33, and the fourth plate 34, and the seventh plate 37 is edge-connected to the second plate 32, the third plate 33, and the fourth plate 34. The sixth plate 36 and the seventh plate abut against the outer A-pillar plate 1. In this way, when the second plate 32 and the fourth plate 34 are under stress, the sixth plate 36 and the seventh plate 37 will not be in the height direction (i.e., Figure 2The vertical movement of the A-pillar enhances the structural strength of the entire car.

[0026] Furthermore, the width of the sixth plate 36 is smaller than the width of the second plate 32, and the width direction is... Figure 2 The left and right directions.

[0027] Preferably, the width of the sixth plate 36 is smaller than the width of the outer plate 1 of the A-pillar.

[0028] In one possible implementation, the car A-pillar also includes a reinforcing shell 5, one end of which is connected to the third plate 33 and the other end of which is connected to the outer plate 1 of the A-pillar, to distribute the force on the third plate 33 and to ensure the structural stability of the third plate 33.

[0029] Secondly, this utility model embodiment provides a car, which includes the A-pillar described in the first aspect.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0031] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific embodiments of the present invention are limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the protection scope of the present invention.

Claims

1. A type of automobile A-pillar, characterized in that, It includes an outer A-pillar panel (1) and an inner A-pillar panel (2) arranged side by side, and a reinforcing plate (3) disposed between the outer A-pillar panel (1) and the inner A-pillar panel (2). One end of the reinforcing plate (3) is connected to the outer A-pillar panel (1), and the other end is connected to the inner A-pillar panel (2). The reinforcing plate (3) abuts against the weld point on the outer A-pillar panel (1), and the reinforcing plate (3) and the inner A-pillar panel (2) form a reinforcing space (4).

2. The automobile A-pillar according to claim 1, characterized in that, The reinforcing plate (3) includes a first plate (31), a second plate (32), a third plate (33), a fourth plate (34), and a fifth plate (35) that are integrally connected. The first plate (31) and the fifth plate (35) are connected to the inner plate (2) of the A-pillar, the third plate (33) is connected to the outer plate (1) of the A-pillar, and the second plate (32), the third plate (33), the fourth plate (34) and the inner plate (2) of the A-pillar form a reinforcing space (4).

3. A car A-pillar according to claim 2, characterized in that, The angle between the first plate (31) and the fifth plate (35) is an obtuse angle.

4. A car A-pillar according to claim 2, characterized in that, The angle between the second plate (32) and the fourth plate (34) faces the inner plate (2) of the A-pillar.

5. A car A-pillar according to claim 4, characterized in that, The angle between the second plate (32) and the fourth plate (34) is an acute angle.

6. A car A-pillar according to claim 2, characterized in that, The reinforcing plate (3) also includes a sixth plate (36) and a seventh plate (37). The sixth plate (36) is connected to the second plate (32), the third plate (33) and the fourth plate (34). The seventh plate (37) is connected to the second plate (32), the third plate (33) and the fourth plate (34). The sixth plate (36) and the seventh plate (37) abut against the outer plate (1) of the A-pillar.

7. A car A-pillar according to claim 6, characterized in that, The width of the sixth plate (36) is smaller than the width of the second plate (32).

8. A car A-pillar according to claim 6, characterized in that, The width of the sixth plate (36) is smaller than the width of the outer plate (1) of the A-pillar.

9. A car A-pillar according to claim 2, characterized in that, The car A-pillar also includes a reinforcing shell (5), one end of which is connected to the third plate (33), and the other end is connected to the outer plate (1) of the A-pillar.

10. A car, characterized in that, Including the A-pillar of a car as described in any one of claims 1-9.