Column A and vehicle

Abstract

The utility model relates to an A column and a vehicle. The A column comprises an A column upper inner plate, a first cross beam connecting plate, a second cross beam connecting plate and an extension plate. The first cross beam connecting plate and the second cross beam connecting plate are arranged on the inner side of the A-column upper inner plate, and the extending plate is arranged on the side, in the lengthwise extending direction of the A-column upper inner plate, of the A-column upper inner plate. The A column upper inner plate, the first cross beam connecting plate, the second cross beam connecting plate and the extension plate are of an integrated structure. Compared with a traditional A column, the A column can be formed through the integrated forming technology, the procedure that the A column upper inner plate is welded to the first cross beam connecting plate, the second cross beam connecting plate and the extending plate can be omitted, and therefore the production efficiency of the A column can be improved.

Description

Technical Field

[0001] The present application relates to the field of automobile technology, and in particular to an A-pillar and a vehicle. Background Art

[0002] The A-pillar refers to a connecting pillar on a vehicle that is used to connect the roof and the front cabin. However, the production process of the traditional A-pillar is relatively large, which leads to low production efficiency of the traditional A-pillar. Summary of the invention

[0003] Based on this, it is necessary to provide an A-pillar and a vehicle to address the problem that the traditional A-pillar has many production processes and thus has low production efficiency.

[0004] According to a first aspect of the present application, there is provided an A-pillar, comprising:

[0005] A-pillar upper inner panel;

[0006] A first crossbeam connecting plate and a second crossbeam connecting plate are provided on the inner side of the A-pillar upper inner plate; and

[0007] An extension plate, provided on one side of the A-pillar upper inner plate along the longitudinal extension direction of the A-pillar upper inner plate;

[0008] Wherein, the A-pillar upper inner plate, the first crossbeam connecting plate, the second crossbeam connecting plate and the extension plate are an integrated structure.

[0009] In the technical solution of the present application, on the one hand, compared with the traditional A-pillar, in the A-pillar of the present application, the welding surface of the overlapping part of the inner plate on the A-pillar connected to the first crossbeam connecting plate, the second crossbeam connecting plate and the extension plate can be removed, which can effectively reduce the overall weight of the A-pillar, which is conducive to lightweighting the entire vehicle, and is conducive to reducing product costs and enhancing the market competitiveness of the entire vehicle; on the other hand, compared with the traditional A-pillar, the A-pillar of the present application can be formed by an integrated molding process, which can save the welding steps of the inner plate on the A-pillar and the first crossbeam connecting plate, the second crossbeam connecting plate and the extension plate respectively, which is conducive to improving the production efficiency of the A-pillar.

[0010] In one embodiment, the strength of the inner plate on the A-pillar is greater than the strength of the first cross beam connecting plate. On the one hand, the strength of the inner plate on the A-pillar is relatively high, so that the inner plate on the A-pillar still maintains a relatively high tensile strength. For example, the strength of the inner plate on the A-pillar can be 1300MPa-1650Mpa, which can improve the overall strength of the A-pillar to meet the application requirements of the A-pillar as a load-bearing component and working conditions such as small offset collision and top pressure; on the other hand, the strength of the first cross beam connecting plate is relatively small, for example, the tensile strength of the first cross beam connecting plate does not exceed 600Mpa, so that the first cross beam connecting plate can be connected to other aluminum plates (such as the front cross beam of the roof) through self-piercing riveting or self-piercing riveting (SPR connection) to meet the use requirements of the A-pillar for steel-aluminum connection, and can also better meet the lightweight requirements of the vehicle.

[0011] In one embodiment, the first crossbeam connecting plate includes a first transition portion and a first tough portion, wherein the first transition portion is connected between the first tough portion and the upper inner plate of the A-pillar; the strength of the first transition portion is between the strength of the upper inner plate of the A-pillar and the strength of the first tough portion. The A-pillar has a "soft and hard" performance distribution, which enables it to have efficient performance in small offset collision experiments. In addition, the first transition portion can also be used to achieve a slow transition from the hard area to the first soft area, which can effectively reduce stress concentration and help improve the toughness and service life of the A-pillar.

[0012] In one embodiment, the strength of the inner plate on the A-pillar is greater than the strength of the second cross beam connecting plate. On the one hand, the strength of the inner plate on the A-pillar is relatively high, so that the inner plate on the A-pillar still maintains a relatively high tensile strength. For example, the strength of the inner plate on the A-pillar can be 1300MPa-1650Mpa, which can improve the overall strength of the A-pillar to meet the application requirements of the A-pillar as a load-bearing component and working conditions such as small offset collision and top pressure; on the other hand, the strength of the second cross beam connecting plate is relatively small, for example, the second cross beam connecting plate is 500MPa-600Mpa, so that the second cross beam connecting plate can be connected to other aluminum plates (such as the cross beam in the top cover) through self-piercing riveting or self-piercing riveting (SPR connection) to meet the use requirements of the A-pillar for steel-aluminum connection, and can also better meet the lightweight requirements of the vehicle.

[0013] In one embodiment, the second cross beam connecting plate includes a second transition portion and a second tough portion, wherein the second transition portion is connected between the second tough portion and the upper inner plate of the A-pillar; the strength of the second transition portion is between the strength of the upper inner plate of the A-pillar and the strength of the second tough portion. This allows the A-pillar to have a "soft and hard" performance distribution, enabling it to have efficient performance in small offset collision tests. In addition, the second transition portion can also be used to achieve a slow transition from the hard zone to the second soft zone, which can effectively reduce stress concentration and help improve the toughness and service life of the A-pillar.

[0014] In one embodiment, the strength of the inner plate on the A-pillar is greater than the strength of the extension plate. On the one hand, the strength of the inner plate on the A-pillar is relatively high, so that the inner plate on the A-pillar still maintains a relatively high tensile strength. For example, the strength of the inner plate on the A-pillar can be 1300MPa-1650Mpa, which can improve the overall strength of the A-pillar to meet the application requirements of the A-pillar as a load-bearing component and working conditions such as small offset collision and top pressure; on the other hand, the strength of the extension plate is relatively small, for example, the tensile strength of the extension plate does not exceed 600Mpa, so that the extension plate can be connected to other aluminum plates (such as the C-pillar) through self-piercing riveting or self-piercing riveting (SPR connection) to meet the use requirements of the A-pillar for steel-aluminum connection, and can also better meet the lightweight requirements of the vehicle.

[0015] In one embodiment, the extension plate includes a third transition portion and a third tough portion, wherein the third transition portion is connected between the third tough portion and the upper inner plate of the A-pillar; the strength of the third transition portion is between the strength of the upper inner plate of the A-pillar and the strength of the third tough portion. This allows the A-pillar to have a "soft and hard" performance distribution, enabling it to have efficient performance in small offset collision experiments. In addition, the third transition portion can also be used to achieve a slow transition from the hard zone to the third soft zone, which can effectively reduce stress concentration and help improve the toughness and service life of the A-pillar.

[0016] In one embodiment, a weight-reducing hole is provided at the connection between the A-pillar upper inner plate and the first cross beam connecting plate; and / or a groove is provided on the second cross beam connecting plate, and a weight-reducing groove is provided on the A-pillar upper inner plate and communicates with the groove, and the bottom wall of the weight-reducing groove is flush with the bottom wall of the groove. The connection between the A-pillar upper inner plate and the first cross beam connecting plate adopts a hollowing design, and the position where the weight-reducing groove is provided on the A-pillar upper inner plate is hollowed out, which can effectively reduce the overall weight of the A-pillar and better meet the lightweight requirements of the vehicle.

[0017] In one embodiment, the A-pillar upper inner plate, the first crossbeam connecting plate, the second crossbeam connecting plate and the extension plate are integrally connected by stamping. The A-pillar is stamped in one step by a hot forming stamping process, so as to realize the special performance of the A-pillar being "soft and hard".

[0018] According to a second aspect of the present application, a vehicle is provided, comprising the A-pillar described in any one of the above embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] FIG1 is a schematic structural diagram of the A-pillar of the present application.

[0020] FIG. 2 is a schematic structural diagram of an A-pillar upper inner panel of a conventional A-pillar.

[0021] Reference numerals:

[0022] 10. A-pillar; 110. A-pillar upper inner plate; 120. first crossbeam connecting plate; 121. first transition portion; 122. first tough portion; 130. second crossbeam connecting plate; 131. second transition portion; 132. second tough portion; 140. extension plate; 141. third transition portion; 142. third tough portion; K. weight-reducing hole; C1. groove; C2. weight-reducing groove. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0024] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0025] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0026] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0027] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0028] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0029] After research, it was found that in the traditional A-pillar, the A-pillar includes components such as the A-pillar upper inner panel, the roof front cross beam connecting plate, the A-pillar upper inner panel extension plate and the roof middle cross beam connecting plate. It requires 10 welding points to weld the various components of the A-pillar. This causes the traditional A-pillar to require additional welding processes and tooling for welding, and thus the traditional A-pillar has more production processes, which in turn leads to lower production efficiency of the traditional A-pillar.

[0030] In order to solve the above technical problems, the present application designs an A-pillar, which adopts an integrated design, can save additional welding processes and improve the production efficiency of the A-pillar.

[0031] FIG. 1 shows a schematic structural diagram of an A-pillar in an embodiment of the present application.

[0032] Please refer to FIG. 1 , an A-pillar 10 provided in one embodiment of the present application includes an A-pillar upper inner plate 110 , a first cross-beam connecting plate 120 , a second cross-beam connecting plate 130 and an extension plate 140 .

[0033] The first cross beam connecting plate 120 and the second cross beam connecting plate 130 are disposed on the inner side of the A-pillar upper inner plate 110 .

[0034] The inner side of the A-pillar upper inner panel 110 refers to a side of the A-pillar upper inner panel 110 that is close to the front cross beam of the roof or the middle cross beam of the roof along the width direction of the vehicle.

[0035] Specifically, the first cross beam connecting plate 120 is a top cover front cross beam connecting plate, and is used to connect the top cover front cross beam; the second cross beam connecting plate 130 is a top cover middle cross beam connecting plate, and is used to connect the top cover middle cross beam.

[0036] The extension plate 140 is disposed on one side of the A-pillar upper inner plate 110 along the longitudinal extension direction of the A-pillar upper inner plate 110 , and the side of the extension plate 140 away from the A-pillar upper inner plate 110 is used to connect to the C-pillar.

[0037] The A-pillar upper inner plate 110 , the first cross beam connecting plate 120 , the second cross beam connecting plate 130 and the extension plate 140 are an integrated structure.

[0038] On the one hand, compared with the traditional A-pillar, in the A-pillar 10 of the present application, the welding surface of the overlapping part of the inner plate 110 on the A-pillar connected to the first cross beam connecting plate 120, the second cross beam connecting plate 130 and the extension plate 140 can be removed, which can effectively reduce the overall weight of the A-pillar 10, which is conducive to lightweighting the entire vehicle, and is conducive to reducing product costs and enhancing the market competitiveness of the entire vehicle; on the other hand, compared with the traditional A-pillar, the A-pillar 10 of the present application can be formed by an integrated molding process, which can save the welding steps of the inner plate 110 on the A-pillar and the first cross beam connecting plate 120, the second cross beam connecting plate 130 and the extension plate 140 respectively, which is conducive to improving the production efficiency of the A-pillar 10.

[0039] In some embodiments, the strength of the A-pillar upper inner plate 110 is greater than the strength of the first cross beam connecting plate 120 .

[0040] On the one hand, the strength of the A-pillar upper inner panel 110 is relatively high, so that the A-pillar upper inner panel 110 still maintains a relatively high tensile strength. For example, the strength of the A-pillar upper inner panel 110 can be 1300MPa-1650Mpa, which can improve the overall strength of the A-pillar 10 to meet the application requirements of the A-pillar 10 as a load-bearing component and working conditions such as small offset collision and top pressure; on the other hand, the strength of the first crossbeam connecting plate 120 is relatively small. For example, the tensile strength of the first crossbeam connecting plate 120 does not exceed 600Mpa, so that the first crossbeam connecting plate 120 can be connected to other aluminum plates (such as the front crossbeam of the roof) by self-piercing riveting or self-piercing riveting (SPR connection) to meet the use requirements of the A-pillar 10 for steel-aluminum connection, and can also better meet the lightweight requirements of the vehicle.

[0041] In some embodiments, the first cross beam connecting plate 120 includes a first transition portion 121 and a first tough portion 122, the first transition portion 121 is connected between the first tough portion 122 and the A-pillar upper inner panel 110, and the strength of the first transition portion 121 is between the strength of the A-pillar upper inner panel 110 and the strength of the first tough portion 122.

[0042] The first tough portion 122 refers to a portion of the first beam connecting plate 120 that has lower strength and higher toughness.

[0043] The first transition portion 121 refers to a portion of the first cross beam connecting plate 120 whose strength is between the A-pillar upper inner plate 110 and the first tough portion 122 .

[0044] Optionally, along the direction from the first transition portion 121 to the first tough portion 122 , the size of the first transition portion 121 is D1 , and D1 is 40 mm.

[0045] From the perspective of mechanical properties, the A-pillar 10 is divided into a hard zone (the area where the A-pillar upper inner plate 110 is located), a first transition zone (the area where the first transition portion 121 is located), and a first soft zone (the area where the first toughness portion 122 is located). On the one hand, the A-pillar upper inner plate 110 still maintains a relatively high tensile strength, which can meet the application requirements of the A-pillar 10 as a load-bearing component and working conditions such as small offset collision and top pressure; on the other hand, the strength of the first toughness portion 122 is relatively small, for example, the strength of the first toughness portion 122 is 500MPa-600Mpa, and the elongation at break of the first toughness portion 122 can reach more than 10%, so that the A-pillar 10 has a "soft and hard" performance distribution, so that it can have efficient performance in small offset collision experiments. In addition, the first transition portion 121 can also be used to achieve a slow transition from the hard zone to the first soft zone, which can effectively reduce stress concentration and help improve the toughness and service life of the A-pillar 10.

[0046] In some embodiments, the strength of the A-pillar upper inner panel 110 is greater than the strength of the second cross beam connecting plate 130 .

[0047] On the one hand, the strength of the A-pillar upper inner panel 110 is relatively high, so that the A-pillar upper inner panel 110 still maintains a relatively high tensile strength. For example, the strength of the A-pillar upper inner panel 110 can be 1300MPa-1650Mpa, which can improve the overall strength of the A-pillar 10 to meet the application requirements of the A-pillar 10 as a load-bearing component and working conditions such as small offset collisions and top pressure; on the other hand, the strength of the second crossbeam connecting plate 130 is relatively small. For example, the second crossbeam connecting plate 130 is 500MPa-600Mpa, so that the second crossbeam connecting plate 130 can be connected to other aluminum plates (such as the middle crossbeam of the top cover) by self-piercing riveting or self-piercing riveting (SPR connection) to meet the use requirements of the A-pillar 10 for steel-aluminum connection, and can also better meet the lightweight requirements of the vehicle.

[0048] In some embodiments, the second cross beam connecting plate 130 includes a second transition portion 131 and a second tough portion 132, the second transition portion 131 is connected between the second tough portion 132 and the A-pillar upper inner panel 110, and the strength of the second transition portion 131 is between the strength of the A-pillar upper inner panel 110 and the strength of the second tough portion 132.

[0049] The second tough portion 132 refers to a portion of the second beam connecting plate 130 that has lower strength and higher toughness.

[0050] The second transition portion 131 refers to a portion of the second cross beam connecting plate 130 whose strength is between the A-pillar upper inner plate 110 and the second toughness portion 132 .

[0051] Optionally, along the direction from the second transition portion 131 to the second tough portion 132 , the size of the second transition portion 131 is D2 , and D2 is 40 mm.

[0052] From the perspective of mechanical properties, the A-pillar 10 is divided into a hard zone (the area where the inner plate 110 on the A-pillar is located), a second transition zone (the area where the second transition portion 131 is located), and a second soft zone (the area where the second toughness portion 132 is located). On the one hand, the inner plate 110 on the A-pillar still maintains a relatively high tensile strength, which can meet the application requirements of the A-pillar 10 as a load-bearing component and working conditions such as small offset collision and top pressure; on the other hand, the strength of the second toughness portion 132 is relatively small, for example, the strength of the second toughness portion 132 is 500MPa-600Mpa, and the elongation at break of the second toughness portion 132 can reach more than 10%, so that the A-pillar 10 has a "soft and hard" performance distribution, so that it can have efficient performance in small offset collision experiments. In addition, the second transition portion 131 can also be used to achieve a slow transition from the hard zone to the second soft zone, which can effectively reduce stress concentration and help improve the toughness and service life of the A-pillar 10.

[0053] In some embodiments, the strength of the A-pillar upper inner panel 110 is greater than the strength of the extension panel 140 .

[0054] On the one hand, the strength of the A-pillar upper inner panel 110 is relatively high, so that the A-pillar upper inner panel 110 still maintains a relatively high tensile strength. For example, the strength of the A-pillar upper inner panel 110 can be 1300MPa-1650Mpa, which can improve the overall strength of the A-pillar 10 to meet the application requirements of the A-pillar 10 as a load-bearing component and working conditions such as small offset collisions and top pressure; on the other hand, the strength of the extension plate 140 is relatively small. For example, the tensile strength of the extension plate 140 does not exceed 600Mpa, so that the extension plate 140 can be connected to other aluminum plates (such as the C-pillar) through self-piercing riveting or self-piercing riveting (SPR connection) to meet the use requirements of the A-pillar 10 for steel-aluminum connection, and can also better meet the lightweight requirements of the vehicle.

[0055] In some embodiments, the extension plate 140 includes a third transition portion 141 and a third tough portion 142, the third transition portion 141 is connected between the third tough portion 142 and the A-pillar upper inner panel 110, and the strength of the third transition portion 141 is between the strength of the A-pillar upper inner panel 110 and the strength of the third tough portion 142.

[0056] The third tough portion 142 refers to a portion of the extension plate 140 having lower strength and higher toughness.

[0057] The third transition portion 141 refers to a portion of the extension plate 140 whose strength is between the A-pillar upper inner panel 110 and the third tough portion 142 .

[0058] Optionally, along the direction from the third transition portion 141 to the third tough portion 142 , the dimension of the third transition portion 141 is D3, and D3 is 40 mm.

[0059] From the perspective of mechanical properties, the A-pillar 10 is divided into a hard zone (the area where the inner plate 110 on the A-pillar is located), a third transition zone (the area where the third transition portion 141 is located), and a third soft zone (the area where the third toughness portion 142 is located). On the one hand, the inner plate 110 on the A-pillar still maintains a relatively high tensile strength, which can meet the application requirements of the A-pillar 10 as a load-bearing component and working conditions such as small offset collision and top pressure. On the other hand, the strength of the third toughness portion 142 is relatively small. For example, the strength of the third toughness portion 142 is 500MPa-600Mpa, and the elongation at break of the third toughness portion 142 can reach more than 10%, so that the A-pillar 10 has a "soft and hard" performance distribution, so that it can have efficient performance in small offset collision experiments. In addition, the third transition portion 141 can also be used to achieve a slow transition from the hard zone to the third soft zone, which can effectively reduce stress concentration and help improve the toughness and service life of the A-pillar 10.

[0060] In some embodiments, a weight-reducing hole K is provided at the connection between the A-pillar upper inner plate 110 and the first cross beam connecting plate 120 (which can be understood by comparing FIG. 1 and FIG. 2 ).

[0061] By way of example, the lightening hole K is configured as an oblong hole.

[0062] The connection between the A-pillar upper inner plate 110 and the first cross beam connecting plate 120 is hollowed out, which can effectively reduce the overall weight of the A-pillar 10 and better meet the lightweight requirements of the vehicle.

[0063] In some embodiments, a groove C1 is provided on the second cross beam connecting plate 130 , a weight reduction groove C2 communicating with the groove C1 is provided on the A-pillar upper inner plate 110 , and a bottom wall of the weight reduction groove C2 is flush with a bottom wall of the groove C1 .

[0064] It can be understood that the hollowing design at the position where the weight reduction groove C2 is set on the inner panel 110 of the A-pillar (which can be understood by comparing Figures 1 and 2) can effectively reduce the overall weight of the A-pillar 10 and better meet the lightweight requirements of the vehicle.

[0065] In some embodiments, the A-pillar upper inner plate 110 , the first cross beam connecting plate 120 , the second cross beam connecting plate 130 , and the extension plate 140 are integrally connected by stamping.

[0066] It can be understood that the A-pillar 10 is formed by a one-time stamping process using a hot forming stamping process, which facilitates the realization of the special "soft and hard" performance of the A-pillar 10. Specifically, the A-pillar 10 is formed by a one-time stamping process using a hot forming stamping process. A heating rod can be arranged at positions of the mold corresponding to the first cross beam connecting plate 120, the second cross beam connecting plate 130 and the extension plate 140 (soft area), and a cooling water channel can be arranged at positions of the mold corresponding to the inner plate 110 (hard area) on the A-pillar. In the production process of the A-pillar 10, the sheet material of the part is first heated, and the heated sheet material is placed in the mold by an industrial robot. In the process of stamping the sheet material, the sheet material The portion corresponding to the hard zone can be quickly cooled and quenched by water, so that the strength of the portion of the sheet corresponding to the hard zone is greatly improved, and an A-pillar upper inner plate 110 with a certain strength can be formed. The portion of the sheet corresponding to the soft zone is kept at a higher temperature by a heating rod for heat preservation, and is not quenched, so that the strength of the portion of the sheet corresponding to the soft zone is relatively low, and a first crossbeam connecting plate 120, a second crossbeam connecting plate 130 and an extension plate 140 with relatively low strength can be formed. This process can flexibly adjust the strength of the soft zone by only adjusting the mold temperature, without adding additional processes and materials. The production process is simple, the cost is low, the quality of parts is easy to control, and it is suitable for mass production.

[0067] The A-pillar 10 of the present application has the following features:

[0068] (1) Lightweight

[0069] In the A-pillar 10 of the present application, the welding surface of the overlapping portion of the A-pillar upper inner plate 110 connected to the first crossbeam connecting plate 120, the second crossbeam connecting plate 130 and the extension plate 140 can be removed, and the connection between the A-pillar upper inner plate 110 and the first crossbeam connecting plate 120, and the position where the weight-reducing groove C2 is set on the A-pillar upper inner plate 110 adopt a hollowing design. In this way, the overall weight of the A-pillar 10 can be effectively reduced, which is conducive to achieving lightweight of the entire vehicle, and is conducive to reducing product costs and enhancing the market competitiveness of the entire vehicle.

[0070] (2) Reduce production processes

[0071] The A-pillar 10 of the present application is formed by a one-time stamping process using a hot forming stamping process, which can save the welding process of the A-pillar upper inner plate 110 with the first cross beam connecting plate 120, the second cross beam connecting plate 130 and the extension plate 140, thereby helping to reduce the production process of the A-pillar 10 and improve the production efficiency of the A-pillar 10.

[0072] (3) Achieving different strengths for the same part

[0073] This application achieves different strengths and elongations on the same part by using different quenching temperatures on the mold, which can meet the SPR connection requirements for subsequent steel-aluminum hybrid connections.

[0074] An embodiment of the present application provides a vehicle, comprising the A-pillar 10 described in any of the above embodiments.

[0075] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0076] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. An A-pillar, characterized in that: include: A-pillar upper inner panel; A first crossbeam connecting plate and a second crossbeam connecting plate are arranged on the inner side of the A-pillar upper inner plate; and An extension plate, provided on one side of the A-pillar upper inner plate along the longitudinal extension direction of the A-pillar upper inner plate; Wherein, the A-pillar upper inner plate, the first crossbeam connecting plate, the second crossbeam connecting plate and the extension plate are an integrated structure.

2. The A-pillar according to claim 1, characterized in that: The strength of the inner plate on the A-pillar is greater than the strength of the first crossbeam connecting plate.

3. The A-pillar according to claim 2, characterized in that: The first cross beam connecting plate includes a first transition portion and a first tough portion, wherein the first transition portion is connected between the first tough portion and the A-pillar upper inner plate; The strength of the first transition portion is between the strength of the A-pillar upper inner panel and the strength of the first toughness portion.

4. The A-pillar according to claim 1, characterized in that: The strength of the inner plate on the A-pillar is greater than the strength of the second cross beam connecting plate.

5. The A-pillar according to claim 4, characterized in that: The second cross beam connecting plate includes a second transition portion and a second tough portion, and the second transition portion is connected between the second tough portion and the A-pillar upper inner plate; The strength of the second transition portion is between the strength of the A-pillar upper inner panel and the strength of the second toughness portion.

6. The A-pillar according to claim 1, characterized in that: The strength of the inner panel on the A-pillar is greater than the strength of the extension panel.

7. The A-pillar according to claim 6, characterized in that: The extension plate includes a third transition portion and a third tough portion, wherein the third transition portion is connected between the third tough portion and the A-pillar upper inner plate; The strength of the third transition portion is between the strength of the A-pillar upper inner panel and the strength of the third toughness portion.

8. The A-pillar according to any one of claims 1 to 7, characterized in that: A weight-reducing hole is provided at the connection between the A-pillar upper inner plate and the first crossbeam connecting plate; and / or A groove is provided on the second cross beam connecting plate, and a weight-reducing groove communicating with the groove is provided on the upper inner plate of the A-pillar, and a bottom wall of the weight-reducing groove is flush with a bottom wall of the groove.

9. The A-pillar according to any one of claims 1 to 7, characterized in that: The A-pillar upper inner plate, the first crossbeam connecting plate, the second crossbeam connecting plate and the extension plate are integrally connected by stamping.

10. A vehicle, characterized in that: It comprises an A-pillar as described in any one of claims 1 to 9.

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