Column A upper reinforcer assembly, side wall reinforcement assembly and vehicle

Abstract

The invention discloses an A-pillar upper reinforcer assembly, a side wall reinforcing assembly and a vehicle, the A-pillar upper reinforcer assembly comprises a hot air expansion pipe, the hot air expansion pipe comprises a first section, a second section and a third section, the first section, the second section and the third section are connected in sequence, the first section is used for being connected with an A-pillar lower reinforcer assembly, and the second section is used for being connected with an A-pillar lower reinforcer assembly; at least part of the second section is used for being arranged between an A column lower reinforcer assembly and a B column reinforcer assembly, and the third section is used for being connected with the B column reinforcer assembly and / or a C column reinforcer assembly. The second section comprises a first wall, a second wall and a third wall, the first wall, the second wall and the third wall are sequentially connected end to end to form a closed loop structure, and at least one of the first wall, the second wall and the third wall is used for being connected with a side wall outer plate. According to the A column upper reinforcer assembly, the overall structural strength and the anti-torque rigidity of the A column upper reinforcer assembly can be improved, the A column obstacle angle and the view blind area of a driver are reduced, and the driving safety is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to an A-pillar upper reinforcement assembly, a side wall reinforcement assembly and a vehicle. BACKGROUND

[0002] With the increasing weight of the whole vehicle and the continuous upgrading of the collision safety standard, the challenge to the vehicle body collision safety is also increasing. The A-pillar upper reinforcement assembly of the vehicle body is an important part of the vehicle body structure and plays a crucial role in the whole vehicle collision. It is required to ensure that the A-pillar upper reinforcement assembly does not bend and resist deformation during collision to protect the survival space of the passenger compartment. Therefore, the A-pillar upper reinforcement assembly needs to be strengthened when designing it.

[0003] In the related art, please refer to Figure 1 , part of the A-pillar upper reinforcement assembly includes an A-pillar upper reinforcement plate 01, a first patch plate 02, an A-pillar inner plate 03 and a second patch plate 04. The A-pillar upper reinforcement plate 01, the first patch plate 02, the A-pillar inner plate 03 and the second patch plate 04 are located inside the side wall outer plate 05. The first patch plate 02 is connected to one side of the A-pillar upper reinforcement plate 01 facing the A-pillar inner plate 03. The second patch plate 04 is connected to one side of the A-pillar inner plate 03 facing the A-pillar upper reinforcement plate 01. The A-pillar upper reinforcement plate 01 is connected to the A-pillar inner plate 03. The A-pillar upper reinforcement assembly of such structure has relatively weak torsional rigidity and relatively large A-pillar obstacle angle, which is not conducive to safe driving. In order to improve the torsional rigidity, please refer to Figure 2 , part of the A-pillar upper reinforcement assembly uses a pipe instead of a reinforcement plate and a patch plate, which includes a pipe 06 and a reinforcement bracket 07. The pipe 06 and the reinforcement bracket 07 are located inside the side wall outer plate 05. The reinforcement bracket 07 is connected to the side wall outer plate 05 and the pipe 06, respectively. Although the A-pillar upper reinforcement assembly of such structure can improve the torsional rigidity to a certain extent, it still has a large A-pillar obstacle angle and a driver's blind area. SUMMARY

[0004] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides an A-pillar upper reinforcement assembly, a side wall reinforcement assembly and a vehicle, which can improve the structural strength and torsional rigidity of the A-pillar upper reinforcement assembly as a whole, reduce the A-pillar obstacle angle and the driver's blind area, and improve the safety of driving.

[0005] In a first aspect, an embodiment of the present application provides an A-pillar upper reinforcement assembly, the A-pillar upper reinforcement assembly comprising a hot air expansion tube, the hot air expansion tube comprising a first section, a second section and a third section, the first section, the second section and the third section being connected in sequence, the first section being configured to be connected with an A-pillar lower reinforcement assembly, at least part of the second section being configured to be arranged between the A-pillar lower reinforcement assembly and a B-pillar reinforcement assembly, and the third section being configured to be connected with the B-pillar reinforcement assembly and / or a C-pillar reinforcement assembly. The second section comprises a first wall, a second wall and a third wall, the first wall, the second wall and the third wall being connected in sequence and forming a closed loop structure, and at least one of the first wall, the second wall and the third wall is configured to be connected with a side outer panel. The A-pillar upper reinforcement assembly according to the embodiment of the present application has at least the following beneficial effects: On the one hand, by adopting the hot air expansion tube as the main force structure of the A-pillar upper reinforcement assembly, the hot air expansion tube itself has high structural strength and torsional stiffness, which is conducive to improving the structural strength and torsional stiffness of the A-pillar upper reinforcement assembly as a whole, thereby improving the safety performance of the vehicle. Moreover, compared with the main force structure formed by the combination of traditional reinforcement plates, patch plates and the like, the hot air expansion tube can effectively reduce the cross-sectional size of the A-pillar upper reinforcement assembly, thereby reducing the A-pillar obstruction angle and the driver's visual blind area. On the other hand, by arranging at least part of the second section between the A-pillar lower reinforcement assembly and the B-pillar reinforcement assembly, the second section is connected by the first wall, the second wall and the third wall to form a closed loop structure. In this way, the number of tube walls of the second section is reduced. Without increasing the size of the other two tube walls, the size of the tube wall away from the vehicle cabin side can be relatively large, so as to form a circular arc angle at both ends of the tube wall away from the vehicle cabin side, thereby realizing the feasibility of the hot air expansion tube forming. The size of the tube wall close to the vehicle cabin side can be designed to be relatively small without prolonging the size of the tube wall close to the vehicle cabin side. Therefore, the A-pillar obstruction angle of the A-pillar upper reinforcement assembly and the driver's visual blind area can be further reduced, the safety of driving is improved, the cross-sectional size of the second section with a relatively small number of tube walls is smaller, and the material quantity and weight are less, which is conducive to reducing the manufacturing cost of the hot air expansion tube and meeting the lightweight demand.

[0006] According to some embodiments of the present application, one end of the third section connected with the second section is located between the A-pillar lower reinforcement assembly and the B-pillar reinforcement assembly and is configured to be connected with a front roof cross beam, and the second section is located between the A-pillar lower reinforcement assembly and the front roof cross beam.

[0007] According to some embodiments of the present application, the second wall is located on the side of the hot air expansion tube close to the vehicle cabin, the third wall is located on the side of the hot air expansion tube away from the vehicle cabin, and the first wall is located on the upper side of the second wall and the third wall and is connected with the upper end of the second wall and the third wall, respectively. In the radial cross section of the main section, the included angle between the first wall and the horizontal line is greater than or equal to 0° and less than or equal to 10°.

[0008] According to some embodiments of the present application, the first wall is located on the upper side of the second wall and the third wall and is connected to the upper end of the second wall and the third wall respectively, and the projection of the second wall and / or the third wall in the thickness direction of the first wall is located within the projection of the first wall.

[0009] According to some embodiments of the present application, the connection between the first wall and the second wall, the connection between the second wall and the third wall, and the connection between the third wall and the first wall are all provided with a circular arc corner, and the radian angle of the circular arc corner is at least 3 times the initial wall thickness of the second section.

[0010] According to some embodiments of the present application, the first wall is located on the upper side of the second wall and the third wall and is connected to the upper end of the second wall and the third wall respectively, and the first wall is used to be connected with the lap joint part of the front windshield, and the projection of the lap joint part and the projection of the first wall overlap in the thickness direction of the first wall.

[0011] According to some embodiments of the present application, the second wall is located on the side of the hot gas expansion tube close to the vehicle cabin, the third wall is located on the side of the hot gas expansion tube away from the vehicle cabin, and the first wall is located on the upper side of the second wall and the third wall and is connected to the upper end of the second wall and the third wall respectively. The first wall is used to be connected with the upper side plate of the side outer panel. And / or, the second wall and / or the third wall are used to be connected with the lower side plate of the side outer panel.

[0012] According to some embodiments of the present application, the upper side plate is arranged in parallel with the first wall, and the first wall is used to be attached to the upper side plate and is welded and fixed.

[0013] According to some embodiments of the present application, the A-pillar upper reinforcing assembly further comprises a first connecting plate, one end of the first connecting plate is arranged in parallel with the first wall and is attached to the first wall, and the other end of the first connecting plate extends out of the first wall in the direction of the vehicle cabin and is used to be connected with the upper side plate.

[0014] According to some embodiments of the present application, the A-pillar upper reinforcing assembly further comprises a second connecting plate and / or a third connecting plate, wherein one end of the second connecting plate is arranged in parallel with the second wall and is attached to the second wall, the other end of the second connecting plate extends downward and is used to be connected with the lower side plate, one end of the third connecting plate is arranged in parallel with the third wall and is attached to the third wall, and the other end of the third connecting plate extends downward and is used to be connected with the lower side plate.

[0015] According to some embodiments of the present application, the A-pillar upper reinforcing assembly further comprises a structural adhesive, and the structural adhesive is arranged between the third wall and the lower side plate and fixes the third wall and the lower side plate. Alternatively, the A-pillar upper reinforcement assembly further comprises a second connecting plate and structural glue, one end of the second connecting plate is connected with the second wall, the other end of the second connecting plate extends towards the lower side plate, and is used for connecting with the lower side plate, and the structural glue is arranged between the third wall and the lower side plate, and fixes the third wall and the lower side plate.

[0016] According to some embodiments of the present application, the change rate of the circumference of the hot-bulb tube along the length direction of the hot-bulb tube is not greater than 8%; And / or, the wall thickness of the partial area of the hot-bulb tube is not equal to that of other areas along the length direction and / or the circumferential direction of the hot-bulb tube, or the wall thickness of the hot-bulb tube is equal along the length direction and / or the circumferential direction of the hot-bulb tube.

[0017] In the second aspect, the embodiments of the present application further provide a side reinforcement assembly, which comprises the A-pillar lower reinforcement assembly, the B-pillar reinforcement assembly, the C-pillar reinforcement assembly, and the A-pillar upper reinforcement assembly according to any one of claims 1-12, the B-pillar reinforcement assembly is located between the A-pillar lower reinforcement assembly and the C-pillar reinforcement assembly, the first section is connected with the A-pillar lower reinforcement assembly, and the third section is connected with the B-pillar reinforcement assembly and the C-pillar reinforcement assembly respectively.

[0018] In the third aspect, the embodiments of the present application further provide a vehicle, which comprises the side reinforcement assembly described above.

[0019] Additional aspects and advantages of the present application will be given in part in the following description, will become apparent from the following description, or will be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0020] The present application will be further described below in conjunction with the drawings and embodiments, in which: Figure 1 Structure schematic diagrams of some A-pillar upper reinforcement assemblies in the related art; Figure 2 Structure schematic diagrams of some A-pillar upper reinforcement assemblies in the related art; Figure 3 Structure schematic diagram of the cooperation between the side reinforcement assembly and the side outer plate according to the embodiments of the present application; Figure 4 Structure schematic diagram of the side reinforcement assembly according to the embodiments of the present application, wherein E represents the connection position of the front roof cross beam and the hot-bulb tube; Figure 5 Sectional view schematic diagram of the cooperation between the A-pillar upper reinforcement assembly and the side outer plate according to the embodiments of the present application Figure 1 , which is cut along the D-D direction of Figure 1 , and shows the cooperation structure between the front windshield glass and the A-pillar upper reinforcement assembly; Figure 6A comparison diagram of the second section of the embodiment of the present application and a conventional pipe fitting, wherein the conventional pipe fitting with four side walls is represented by a thick dashed line and the second section of the embodiment of the present application is represented by a thin solid line; Figure 7 A cross-sectional view of the cooperation between the A-pillar upper reinforcement assembly and the side outer panel of the embodiment of the present application Figure 1 ; Figure 8 A cross-sectional view of the cooperation between the A-pillar upper reinforcement assembly and the side outer panel of the embodiment of the present application Figure 3 .

[0021] Reference signs: side reinforcement assembly 100; A-pillar upper reinforcement assembly 10; hot gas expansion pipe 11; first section 111; second section 112; first wall 1121; second wall 1122; third wall 1123; third section 113; circular arc corner 101; first connecting plate 12; second connecting plate 13; third connecting plate 14; structural adhesive 15; A-pillar lower reinforcement assembly 20; B-pillar reinforcement assembly 30; C-pillar reinforcement assembly 40; side outer panel 200; upper side panel 210; lower side panel 220; front windshield 300; lap joint 310. DETAILED DESCRIPTION

[0022] The embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above description of drawings are intended to cover non-exclusive inclusion.

[0024] In the description of the embodiments of the present application, the technical terms "first", "second", "third" and the like are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0025] The phrase "in one embodiment" as used herein does not mean the same embodiment in every instance. Rather, the phrase "in one embodiment" means that the particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of the present application. Additionally, the phrase "in one embodiment" is not used herein to refer to the same embodiment in all instances.

[0026] In the description of the embodiments of the present application, the term "and / or" is merely used to describe associated objects, and can represent the three conditions of "A and / or B", that is, A and B can exist independently, A and B exist simultaneously, and B exists independently.

[0027] In the description of the embodiments of the present application, the technical terms "top", "bottom", "upper", "lower" and the like indicate the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the embodiments of the present application and simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed, operated or used in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0028] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, can be fixedly connected, can be detachably connected, or can be integrated. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0029] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical term "contact" should be understood broadly, which can be direct contact or contact through an intermediate medium layer, and can be contact between two objects in contact without mutual interaction force, or contact between two objects in contact with mutual interaction force.

[0030] For related technology, please refer to Figure 2The pipe 06 includes at least four side walls which are connected end to end and form a closed loop structure. The pipe 06 is provided with at least four side walls because the connection of the pipe 06 with the A-pillar lower reinforcement assembly requires at least four side walls to be respectively overlapped with the A-pillar lower reinforcement assembly, and the connection of the pipe 06 with the B-pillar reinforcement assembly requires at least four side walls to be respectively overlapped with the B-pillar reinforcement assembly. In the forming of the pipe 06, the connection between each two adjacent side walls needs to be chamfered with a circular arc. Taking the case of four side walls as an example, four circular arc angles need to be chamfered, and the two adjacent circular arc angles are located at the two ends of the same side wall. If the size of the side wall is too small, the circular arc angles formed at the two ends of the side wall will also be too small, and the too small circular arc angles will cause the pipe to be unable to be formed. The four side walls are a first side wall 061, a second side wall 062, a third side wall 063 and a fourth side wall 064. Since the first side wall 061 away from the vehicle cabin side needs to be formed with the side wall outer plate 05, the size of the first side wall 061 is small. Therefore, the size of the first side wall 061 is lengthened to form the circular arc angles at the two ends of the first side wall 061. At the same time, in order to make the angles of the first side wall 061, the second side wall 062, the third side wall 063 and the fourth side wall 064 as small as possible, the third side wall 063 close to the vehicle cabin side needs to be lengthened. However, the lengthening of the third side wall 063 will cause the A-pillar obstacle angle to increase, which is not conducive to reducing the A-pillar obstacle angle.

[0031] Therefore, in a first aspect, referring to Figure 4 , the embodiment of the present application provides an A-pillar upper reinforcement assembly 10, which comprises a hot gas expansion pipe 11. The hot gas expansion pipe 11 comprises a first section 111, a second section 112 and a third section 113. The first section 111, the second section 112 and the third section 113 are connected in sequence. The second section 112 is located between the first section 111 and the third section 113. The first section 111 is used to connect with an A-pillar lower reinforcement assembly 20. At least part of the second section 112 is used to be arranged between the A-pillar lower reinforcement assembly 20 and a B-pillar reinforcement assembly 30. The third section 113 is used to connect with the B-pillar reinforcement assembly 30 and / or a C-pillar reinforcement assembly 40.

[0032] Please refer to Figure 5 The second section 112 comprises a first wall 1121, a second wall 1122 and a third wall 1123. The first wall 1121, the second wall 1122 and the third wall 1123 are connected in sequence and form a closed loop structure. At least one of the first wall 1121, the second wall 1122 and the third wall 1123 is used to connect with a side wall outer plate 200.

[0033] In the embodiment of the present application, on the one hand, by adopting the hot gas expansion pipe 11 as the main force structure of the A-pillar upper reinforcement assembly 10, the hot gas expansion pipe 11 itself has high structural strength and torsional stiffness, which is beneficial to improve the overall structural strength and torsional stiffness of the A-pillar upper reinforcement assembly 10, thereby improving the safety performance of the vehicle, and compared with the main force structure formed by the combination of the traditional reinforcing plate, patch plate and the like, the hot gas expansion pipe 11 can effectively reduce the cross-sectional size of the A-pillar upper reinforcement assembly 10, thereby reducing the A-pillar obstacle angle and the driver's visual blind area; on the other hand, by arranging at least part of the second section 112 between the A-pillar lower reinforcement assembly 20 and the B-pillar reinforcement assembly 30, the second section 112 is connected by the first wall 1121, the second wall 1122 and the third wall 1123 to form a closed loop structure, in this way, the number of pipe walls of the second section 112 is reduced, and under the premise of not increasing the size of the other two pipe walls, the size of the pipe wall away from the vehicle cabin side can be relatively large, so as to form a circular arc angle at both ends of the pipe wall away from the vehicle cabin side, thereby realizing the feasibility of forming the hot gas expansion pipe 11, without the need to lengthen the size of the pipe wall close to the vehicle cabin side, so that the size of the pipe wall close to the vehicle cabin side can be designed to be relatively small, thereby further reducing the A-pillar obstacle angle of the A-pillar upper reinforcement assembly 10 and the driver's visual blind area, improving the safety of driving, and the cross-sectional size of the second section 112 with a relatively small number of pipe walls is smaller, and the material quantity and weight are less, which is beneficial to reduce the manufacturing cost of the hot gas expansion pipe 11 and meet the lightweight demand.

[0034] For ease of understanding, please refer to Figure 6 , in Figure 6 , the traditional pipe with four side walls is represented by a thick dashed line, and the second section 112 of the embodiment of the present application is represented by a thin solid line, the traditional pipe can form a larger circular arc angle at both ends of the first side wall 061 to realize the feasibility of pipe forming, and the size of the first side wall 061 away from the vehicle cabin side needs to be lengthened, which causes the third side wall 063 close to the vehicle cabin side to be lengthened synchronously, thereby causing the A-pillar obstacle angle to increase. In the present embodiment, the third wall 1123 away from the vehicle cabin side does not need to be separately formed into the first side wall 061 and the fourth side wall 064 of the traditional pipe, so that the size of the third wall 1123 itself is large enough to meet the requirement of forming a larger circular arc angle at both ends, realize the feasibility of forming the hot gas expansion pipe 11, and does not need to lengthen the size of the second wall 1122, so that the size of the third wall 1123 can be smaller than the size of the traditional third side wall 063, therefore, the A-pillar obstacle angle of the present embodiment is smaller than the traditional A-pillar obstacle angle.

[0035] It can be understood that the number of tube walls of the first section 111 and the third section 113 can be selected according to actual needs. For example, the number of tube walls of the first section 111 can be four, and the four tube walls are connected end to end to form a closed loop structure for respectively overlapping with the A-pillar lower reinforcement assembly 20, so as to ensure that the first section 111 has sufficient connection strength with the A-pillar lower reinforcement assembly 20. The number of tube walls of the third section 113 can also be four, and the four tube walls are connected end to end to form a closed loop structure for overlapping with the B-pillar reinforcement assembly 30 and / or the C-pillar reinforcement assembly 40, so as to ensure that the third section 113 has sufficient connection strength with the B-pillar lower reinforcement assembly and / or the C-pillar reinforcement assembly 40. The connection between the first section 111 and the second section 112 can gradually transition from four tube walls to three tube walls, and the connection between the third section 113 and the second section 112 can also gradually transition from four tube walls to three tube walls.

[0036] Generally, the A-pillar blind area is concentrated between the A-pillar lower reinforcement assembly 20 and the front roof cross beam.

[0037] Therefore, referring to Figure 4 , in Figure 4 , E represents the connection position of the front roof cross beam and the hot air expansion tube 11. In some embodiments, one end of the third section 113 connected with the second section 112 is located between the A-pillar lower reinforcement assembly 20 and the B-pillar reinforcement assembly 30, and is used for connecting with the front roof cross beam. The second section 112 is located between the A-pillar lower reinforcement assembly 20 and the front roof cross beam. In this way, the second section 112 does not need to extend to the A-pillar lower reinforcement assembly 20 and directly connect with the A-pillar lower reinforcement assembly 20, nor does it need to extend to the front roof cross beam and directly connect with the front roof cross beam. The extension length of the second section 112 can be reduced, and the A-pillar blind area between the A-pillar lower reinforcement assembly 20 and the front roof cross beam can be reduced. At the same time, the hot air expansion tube 11 is connected with the A-pillar lower reinforcement assembly 20 through the first section 111, and is connected with the front roof cross beam through the third section 113. The number of tube walls of the first section 111 and the third section 113 can be selected according to the overlapping needs. For example, the number of tube walls of the first section 111 and the third section 113 is four. The four tube walls of the first section 111 are respectively overlapped with the A-pillar lower reinforcement assembly 20, and the four tube walls of the third section 113 are respectively overlapped with the front roof cross beam, so as to ensure the connection strength of the hot air expansion tube 11 with the A-pillar lower reinforcement assembly 20 and the front roof cross beam.

[0038] Of course, according to needs, the second section 112 can also extend to the A-pillar lower reinforcement assembly 20 and be connected with the first section 111 to the A-pillar lower reinforcement assembly 20. The third section 113 can also extend to the front roof cross beam, the B-pillar reinforcement assembly 30 or the C-pillar reinforcement assembly 40, and be connected with the third section 113 to the front roof cross beam, the B-pillar reinforcement assembly 30 or the C-pillar reinforcement assembly 40.

[0039] Referring to Figure 5 In some embodiments, the second wall 1122 is located at the side of the hot-bent tube 11 close to the vehicle cabin, the third wall 1123 is located at the side of the hot-bent tube 11 away from the vehicle cabin, and the first wall 1121 is located at the upper side of the second wall 1122 and the third wall 1123 and connected to the upper ends of the second wall 1122 and the third wall 1123 respectively. In the radial cross section of the second section 112, the included angle β between the first wall 1121 and the horizontal line L is greater than or equal to 0° and less than or equal to 10°. Wherein, the first wall 1121 coincides with or is located above the horizontal line L, and the horizontal line L is parallel to the vehicle width direction.

[0040] It can be understood that the upper end of the second wall 1122 will affect the A-pillar obstacle angle and the driver's visual blind area. When the included angle β between the first wall 1121 and the horizontal line L is too large, the position of the end of the first wall 1121 connected to the second wall 1122 is relatively high with respect to the horizontal line L, and the second wall 1122 needs to be extended upward by a certain size to be connected to the first wall 1121, which causes the position of the upper end of the second wall 1122 to be relatively high with respect to the horizontal line L, and further causes the A-pillar obstacle angle and the driver's visual blind area to increase. In the present embodiment, by making the included angle β between the first wall 1121 and the horizontal line L less than or equal to 10°, the size of the upward extension of the second wall 1122 can be reduced under the condition that the position of the lower end of the second wall 1122 with respect to the horizontal line L remains unchanged, so that the position of the upper end of the second wall 1122 with respect to the horizontal line L is relatively low, thereby reducing the A-pillar obstacle angle and the driver's visual blind area and improving the safety of driving. And by making the included angle β between the first wall 1121 and the horizontal line L greater than or equal to 0°, the second wall 1122 can be prevented from being too short due to the negative value of the included angle β under the condition that the position of the lower end of the second wall 1122 with respect to the horizontal line L remains unchanged, thereby reducing the internal cavity of the second section 112, wherein the too small internal cavity will reduce the structural performance of the second section 112.

[0041] In addition, the side outer plate 200 is defined with a cavity 201 and a cavity opening in communication with the cavity 201 on the side facing the vehicle cabin, and the A-pillar reinforcement assembly 10 is arranged in the cavity 201 through the cavity opening. Generally, in order to enable the A-pillar reinforcement assembly 10 to be closely matched with the side outer plate 200, the cavity opening is arranged to be small, and the upper side plate 210 of the side outer plate 200 has a small inclination angle relative to the horizontal line L, which causes the second section 112 to be difficult to be arranged in the cavity 201 through the cavity opening, and the upper side plate 210 needs to be bent to a certain extent to enable the second section 112 to be arranged in the cavity 201 through the cavity opening, which is difficult to assemble and can cause the side outer plate 200 to be permanently deformed. In the embodiment, by arranging the angle β between the first wall 1121 and the horizontal line L to be less than or equal to 10°, the inclination degree of the first wall 1121 relative to the horizontal line L is small as a whole, and thus the second section 112 can be conveniently arranged in the cavity 201 of the side outer plate 200 through the cavity opening, the assembly difficulty of the second section 112 and the side outer plate 200 is reduced, and the assembly efficiency is improved.

[0042] Optionally, the angle β between the first wall 1121 and the horizontal line L is greater than 0° and less than or equal to 10°.

[0043] Optionally, the angle β between the first wall 1121 and the horizontal line L is greater than or equal to 3° and less than or equal to 5°.

[0044] Please refer to Figure 5 In some embodiments, the first wall 1121 is located on the upper side of the second wall 1122 and the third wall 1123 and is connected with the upper ends of the second wall 1122 and the third wall 1123, respectively. In the thickness direction of the first wall 1121, the projection of the second wall 1122 and / or the projection of the third wall 1123 is located in the projection of the first wall 1121, and thus the structure of the second section 112 as a whole can be compact under the premise of meeting the structural performance of the second section 112. In the embodiment, by arranging the projection of the second wall 1122 to be located in the projection of the first wall 1121, that is, the second wall 1122 is folded away from the position of the vehicle cabin from the first wall 1121, and thus the space occupation of the second wall 1122 on the side of the vehicle cabin can be reduced to provide a layout space for the A-pillar inner panel, the side curtain and the like. By arranging the projection of the third wall 1123 to be located in the projection of the first wall 1121, that is, the third wall 1123 is folded towards the position of the vehicle cabin from the first wall 1121, and thus the space occupation of the third wall 1123 on the cavity 201 of the side outer plate 200 can be reduced to avoid the side outer plate 200 from protruding outward to avoid the third wall 1123 and causing an awkward feeling.

[0045] Please refer to Figure 5In some embodiments, the junction between the first wall 1121 and the second wall 1122, the junction between the second wall 1122 and the third wall 1123, and the junction between the third wall 1123 and the first wall 1121 are each provided with a circular arc corner 101, and the radian angle of the circular arc corner 101 is at least 3 times the initial wall thickness of the second section 112.

[0046] In the present embodiment, on the one hand, by providing the circular arc corner 101 at the junction of each pipe wall, the circular arc transition between each pipe wall is achieved, the stress structure between adjacent walls is optimized, the structural strength and torsional rigidity of the second section 112 can be improved, and when the vehicle is in a collision, stress concentration at the junction of each pipe wall can be avoided to generate cracks; on the other hand, by making the radian angle of the circular arc corner 101 at least 3 times the initial wall thickness of the hot gas expansion pipe 11, the structural strength and torsional rigidity of the entire hot gas expansion pipe 11 after forming can be ensured on the premise of meeting the forming process requirements of the hot gas expansion pipe 11.

[0047] In the present embodiment, on the one hand, by providing the circular arc corner 101 at the junction of each pipe wall, the circular arc transition between each pipe wall is achieved, the stress structure between adjacent walls is optimized, the structural strength and torsional rigidity of the second section 112 can be improved, and when the vehicle is in a collision, stress concentration at the junction of each pipe wall can be avoided to generate cracks; on the other hand, by making the radian angle of the circular arc corner 101 at least 3 times the initial wall thickness of the hot gas expansion pipe 11, the structural strength and torsional rigidity of the entire hot gas expansion pipe 11 after forming can be ensured on the premise of meeting the forming process requirements of the hot gas expansion pipe 11.

[0048] Optionally, the radian angle of the circular arc corner 101 is 4 times the initial wall thickness of the second section 112.

[0049] It should be noted that the junction of each adjacent two pipe walls of the first section 111 is also provided with a circular arc corner, and the radian angle of the circular arc corner 101 is at least 3 times the initial wall thickness of the first section 111. The junction of each adjacent two pipe walls of the third section 113 is also provided with a circular arc corner, and the radian angle of the circular arc corner is at least 3 times the initial wall thickness of the first section 111.

[0050] Please refer to Figure 5 In some embodiments, the first wall 1121 is located on the upper side of the second wall 1122 and the third wall 1123, and is connected with the upper end of the second wall 1122 and the third wall 1123 respectively, the first wall 1121 is used to be connected with the lap joint part 310 of the front windshield glass 300, and the projection of the lap joint part 310 and the projection of the first wall 1121 overlap in the thickness direction of the first wall 1121.

[0051] When the lap joint 310 of the front windshield 300 is connected to the upper side of the first wall 1121, the lap joint 310 will affect the A-pillar obstacle angle and the driver's blind area, and if the lap joint 310 is closer to the vehicle cabin than the upper end of the second wall 1122, the A-pillar obstacle angle and the driver's blind area will be increased. In the present embodiment, by overlapping the projection of the lap joint 310 and the projection of the first wall 1121, the lap joint 310 is at least partially located on the side of the upper end of the second wall 1122 away from the vehicle cabin, which can reduce the impact of the lap joint 310 on the A-pillar obstacle angle and the driver's blind area, and ensure that the A-pillar obstacle angle and the driver's blind area of the A-pillar reinforcement assembly 10 are small.

[0052] In some embodiments, the projection of the lap joint 310 of the front windshield 300 can be completely within the projection of the first wall 1121, that is, the lap joint 310 is entirely located on the side of the upper end of the second wall 1122 away from the vehicle cabin, which can greatly reduce the impact of the lap joint 310 on the A-pillar obstacle angle and the driver's blind area. Of course, the projection of the lap joint 310 of the front windshield 300 can also be partially within the projection of the first wall 1121 and partially outside the projection of the first wall 1121, that is, the lap joint 310 is partially located on the side of the upper end of the second wall 1122 away from the vehicle cabin and partially located on the side of the upper end of the second wall 1122 close to the vehicle cabin, which can reduce the impact of the lap joint 310 on the A-pillar obstacle angle and the driver's blind area to some extent.

[0053] Please refer to Figure 5 In some embodiments, the second wall 1122 is located on the side of the hot gas expansion tube 11 close to the vehicle cabin, the third wall 1123 is located on the side of the hot gas expansion tube 11 away from the vehicle cabin, and the first wall 1121 is located on the upper side of the second wall 1122 and the third wall 1123 and connected to the upper end of the second wall 1122 and the third wall 1123, respectively, and is used to be connected to the upper side plate 210 of the side outer panel 200.

[0054] Please refer to Figure 7 In some embodiments, the second wall 1122 and / or the third wall 1123 are used to be connected to the lower side plate 220 of the side outer panel 200.

[0055] In Figure 5 and Figure 7 In the embodiments shown in the drawings, by connecting the first wall 1121, the second wall 1122 and / or the third wall 1123 to the side outer panel 200, the force transmission between the second section 112 and the side outer panel 200 can be achieved, and when the vehicle is in a collision, the collision load borne by the side outer panel 200 can be transmitted to the hot gas expansion tube 11, so that the collision load can be effectively introduced into the vehicle body structure through the second section 112, thereby avoiding tearing and excessive deformation of the side outer panel 200.

[0056] When the first wall 1121 is connected with the upper side plate 210 of the side outer plate 200, the second section 112 can support the side outer plate 200 from bottom to top, which is conducive to the stable connection of the side outer plate 200 on the second section 112, and the collision load borne by the side outer plate 200 can be effectively transmitted to the front roof cross beam and other structures through the first wall 1121; when the second wall 1122 and / or the third wall 1123 are connected with the lower side plate 220 of the side outer plate 200, the torsional rigidity of the lower end of the second section 112 can be improved, so that deformation is not easy to occur when the vehicle collides.

[0057] Among them, only when one of the first wall 1121, the second wall 1122 or the third wall 1123 is connected with the side outer plate 200, the connection position of the second section 112 and the side outer plate 200 can be reduced under the premise of ensuring the connection strength between the second section 112 and the side outer plate 200, and the welding step is reduced.

[0058] Please refer to Figure 5 In some embodiments, the upper side plate 210 is arranged in parallel with the first wall 1121, and the first wall 1121 is used to be attached to the upper side plate 210 and is welded and fixed, that is to say, the first wall 1121 and the upper side plate 210 do not need to be connected and fixed through an adapter, and the first wall 1121 is directly welded and fixed with the upper side plate 210, so that the connection structure between the first wall 1121 and the upper side plate 210 can be simplified, the material required for fixing the first wall 1121 and the upper side plate 210 can be saved, and direct and effective force transmission between the first wall 1121 and the upper side plate 210 is facilitated.

[0059] In the specific implementation process, laser welding can be used between the first wall 1121 and the upper side plate 210 to realize the fixation.

[0060] Please refer to Figure 7 In some embodiments, the A-pillar reinforcement assembly 10 further includes a first connecting plate 12, one end of the first connecting plate 12 is arranged in parallel with the first wall 1121 and is attached to the first wall 1121, and the other end of the first connecting plate 12 extends out of the first wall 1121 towards the direction of the vehicle cabin and is used to be connected with the upper side plate 210, that is to say, the first wall 1121 and the upper side plate 210 are connected through the first connecting plate 12, so that under the premise of meeting the structural performance, the first connecting plate 12 can compensate the distance between the first wall 1121 and the upper side plate 210 to a certain extent through the adapter, so that the cross-sectional size of the second section 112 can be appropriately reduced, and the effects of weight reduction and cost reduction are achieved.

[0061] Please refer to Figure 7In some embodiments, the A-pillar upper reinforcement assembly 10 further comprises a second connecting plate 13, one end of the second connecting plate 13 is arranged parallel to the second wall 1122 and is attached to the second wall 1122, and the other end of the second connecting plate 13 extends downward and is used to connect with the lower side plate 220, that is to say, the second wall 1122 and the lower side plate 220 are connected through the second connecting plate 13, in this way, the second connecting plate 13 can strengthen the connection between the second wall 1122 and the lower side plate 220, improve the torsional rigidity of the lower end of the second section 112, and meet the small offset collision requirements.

[0062] Please refer to Figure 8 In some embodiments, the A-pillar upper reinforcement assembly 10 further comprises a third connecting plate 14, one end of the third connecting plate 14 is arranged parallel to the third wall 1123 and is attached to the third wall 1123, and the other end of the third connecting plate 14 extends downward and is used to connect with the lower side plate 220, that is to say, the third wall 1123 and the lower side plate 220 are connected through the third connecting plate 14, in this way, the second connecting plate 13 can strengthen the connection between the third wall 1123 and the lower side plate 220, improve the torsional rigidity of the lower end of the second section 112, and meet the small offset collision requirements.

[0063] In some embodiments, the A-pillar upper reinforcement assembly 10 comprises the second connecting plate 13 and the third connecting plate 14 described above, in this way, the lower side plate 220 is connected with the hot gas expansion tube 11 on both sides, which can ensure that the lower end of the second section 112 has high torsional rigidity, and optimize the stress structure between the second section 112 and the outer panel 200, thereby improving the structural performance of the A-pillar upper reinforcement assembly 10.

[0064] In some embodiments, the other end of the second connecting plate 13 and the third connecting plate 14 can be stacked with the lower side plate 220 and fixed to each other.

[0065] In the specific implementation process, the second connecting plate 13 can be fixed to the second wall 1122 and the lower side plate 220 by welding, and the third connecting plate 14 can be fixed to the third wall 1123 and the lower side plate 220 by welding.

[0066] Please refer to Figure 7In some embodiments, the A-pillar upper reinforcement assembly 10 further comprises a structural adhesive 15 arranged between the third wall 1123 and the lower side plate 220 and fixing the third wall 1123 and the lower side plate 220. In this way, the connection structure between the third wall 1123 and the lower side plate 220 can be simplified, the required material for fixing the third wall 1123 and the lower side plate 220 can be saved, direct and effective force transmission between the third wall 1123 and the lower side plate 220 can be facilitated, and the low-frequency road noise effect between the third wall 1123 and the lower side plate 220 can be reduced.

[0067] Referring to Figure 7 In some embodiments, the A-pillar upper reinforcement assembly 10 further comprises a second connecting plate 13 and a structural adhesive 15. One end of the second connecting plate 13 is connected with the second wall 1122, and the other end of the second connecting plate 13 extends downward and is used to be connected with the lower side plate 220. The structural adhesive 15 is arranged between the third wall 1123 and the lower side plate 220 and fixes the third wall 1123 and the lower side plate 220. Through the above arrangement, the double-sided connection of the lower side plate 220 and the lower end of the second section 112 is realized, the torsional rigidity of the lower end of the second section 112 is improved, the small offset collision requirement is met, direct and effective force transmission between the third wall 1123 and the lower side plate 220 is facilitated, and the low-frequency road noise effect between the third wall 1123 and the lower side plate 220 is reduced.

[0068] It should be noted that, in the second section 112 of the present application, the first wall 1121, the second wall 1122 and the third wall 1123 are connected in series to form a closed loop structure. In reducing the number of pipe walls, the connection of the second section 112 and the side outer plate 200 in any one of the embodiments shown in Figure 5 、 7 and Figure 8 can meet the connection requirements of the second section 112 and the side outer plate 200 and ensure the structural performance between the second section 112 and the side outer plate 200.

[0069] Referring to the drawings, in some embodiments, the perimeter change rate of the hot gas expansion tube 11 along the length direction of the hot gas expansion tube 11 is not greater than 8%.

[0070] The change rate of the circumference of the hot gas expansion tube 11 refers to the difference between the circumference of the section with the longest circumference of the hot gas expansion tube 11 and the circumference of the section with the shortest circumference of the hot gas expansion tube 11, divided by the circumference of the section with the shortest circumference of the hot gas expansion tube 11. The control of the change rate of the circumference of the hot gas expansion tube 11 is mainly realized by optimizing the hot gas expansion forming process. The change rate of the circumference of the hot gas expansion tube 11 is not greater than 8%, the mechanical properties of the sections of the hot gas expansion tube 11 are less different, and the process stability is improved.

[0071] In some embodiments, the wall thickness of the hot gas expansion tube 11 is not equal in different regions along the length direction and / or the circumferential direction of the hot gas expansion tube 11. For example, the hot gas expansion tube 11 can be provided with a larger wall thickness in regions with greater stress (such as the connection position of the hot gas expansion tube 11 and other components) to enhance the local structural strength, and the wall thickness can be appropriately reduced in regions with smaller stress to reduce the overall weight.

[0072] The variable wall thickness can be a tailored rolled blank (TRB) or a tailored welded blank (TWB). Specifically, in the forming process, the plate body is rolled or laser welded to obtain a plate body with a variable wall thickness, the plate body with a variable wall thickness is wound and welded to obtain a pipe with a variable wall thickness, and then the pipe with a variable wall thickness is obtained after multiple processes.

[0073] In other embodiments, the wall thickness of the hot gas expansion tube 11 is equal along the length direction and / or the circumferential direction of the hot gas expansion tube 11. In this way, the structural design of the hot gas expansion tube 11 can be simplified, and the manufacturing cost can be reduced.

[0074] In a second aspect, referring to Figure 3 and Figure 4 The embodiment of the present application also provides a side wall reinforcement assembly 100, which comprises the A-pillar lower reinforcement assembly 20, the B-pillar reinforcement assembly 30, the C-pillar reinforcement assembly 40, and the A-pillar upper reinforcement assembly 10. The B-pillar reinforcement assembly 30 is located between the A-pillar lower reinforcement assembly 20 and the C-pillar reinforcement assembly 40. The first section 111 of the A-pillar upper reinforcement assembly 10 is connected with the A-pillar lower reinforcement assembly 20, and the third section 113 of the A-pillar upper reinforcement assembly 10 is connected with the B-pillar reinforcement assembly 30 and the C-pillar reinforcement assembly 40, respectively.

[0075] In the embodiment, the A-pillar lower reinforcement assembly 20, the B-pillar reinforcement assembly 30 and the C-pillar lower reinforcement assembly are respectively connected with the hot gas expansion tube 11 of the A-pillar upper reinforcement assembly 10, and since the hot gas expansion tube 11 itself has high structural strength and torsional rigidity, the torsional rigidity and connection reliability of the connection between the A-pillar upper reinforcement assembly 10 and the A-pillar lower reinforcement assembly 20, the B-pillar reinforcement assembly 30 and the C-pillar lower reinforcement assembly are improved, and the safety performance of the vehicle is improved.

[0076] In a third aspect, the embodiment of the present application further provides a vehicle, which comprises the side wall reinforcement assembly.

[0077] It should be noted that the vehicle in the embodiment of the present application can be a private car, such as a sedan, an SUV, an MPV or a pickup truck. The vehicle can also be a commercial vehicle, such as a van, a bus or a truck. The vehicle can be a gasoline vehicle or a new energy vehicle. When the vehicle is a new energy vehicle, it can be a hybrid vehicle or a pure electric vehicle.

[0078] It should be noted that the vehicle provided by the embodiment of the present application only shows the part related to the technical problem to be solved by the embodiment of the present application. It can be understood that the vehicle provided by the embodiment of the present application also includes other structures for realizing the function of the vehicle, including but not limited to a vehicle cabin.

[0079] The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be covered in the scope of the specification of the present application. In particular, each technical feature mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of protection.

Claims

1. An A-pillar reinforcement assembly, characterized in that, The device includes a hot gas expansion tube, which comprises a first section, a second section, and a third section, which are connected in sequence. The first section is used to connect to the A-pillar lower reinforcement assembly, at least a portion of the second section is used to be disposed between the A-pillar lower reinforcement assembly and the B-pillar reinforcement assembly, and the third section is used to connect to the B-pillar reinforcement assembly and / or the C-pillar reinforcement assembly. The second section includes a first wall, a second wall, and a third wall. The first wall, the second wall, and the third wall are connected end to end to form a closed loop structure. At least one of the first wall, the second wall, and the third wall is used to connect with the outer side panel.

2. The A-pillar reinforcement assembly according to claim 1, characterized in that, The third segment is located between the lower A-pillar reinforcement assembly and the B-pillar reinforcement assembly, and is used to connect with the front roof beam. The second segment is located between the lower A-pillar reinforcement assembly and the front roof beam.

3. The A-pillar reinforcement assembly according to claim 1, characterized in that, The second wall is located on the side of the hot air expansion tube closer to the vehicle compartment, and the third wall is located on the side of the hot air expansion tube away from the vehicle compartment. The first wall is located above the second wall and the third wall and is connected to the upper ends of the second wall and the third wall respectively. In the radial section of the second segment, the angle between the first wall and the horizontal line is greater than or equal to 0° and less than or equal to 10°.

4. The A-pillar reinforcement assembly according to claim 1, characterized in that, The first wall is located above the second wall and the third wall, and is connected to the upper ends of the second wall and the third wall respectively. Along the thickness direction of the first wall, the projection of the second wall and / or the third wall is located within the projection of the first wall.

5. The A-pillar reinforcement assembly according to claim 1, characterized in that, The connection between the first wall and the second wall, the connection between the second wall and the third wall, and the connection between the third wall and the first wall are all provided with rounded corners, and the arc angle of the rounded corner is at least 3 times the initial wall thickness of the second segment.

6. The A-pillar reinforcement assembly according to claim 1, characterized in that, The first wall is located above the second wall and the third wall, and is connected to the upper ends of the second wall and the third wall respectively. The first wall is used to connect with the overlap portion of the windshield. Along the thickness direction of the first wall, the projection of the overlap portion overlaps with the projection of the first wall.

7. The A-pillar reinforcement assembly according to claim 1, characterized in that, The second wall is located on the side of the hot air expansion tube closer to the vehicle compartment, the third wall is located on the side of the hot air expansion tube away from the vehicle compartment, and the first wall is located above the second wall and the third wall, and is connected to the upper ends of the second wall and the third wall respectively. The first wall is used to connect with the upper side plate of the outer side panel; And / or, the second wall and / or the third wall are used to connect to the lower side panel of the outer side panel.

8. The A-pillar reinforcement assembly according to claim 7, characterized in that, The upper side plate is arranged parallel to the first wall, and the first wall is used to fit against the upper side plate and be welded and fixed.

9. The A-pillar reinforcement assembly according to claim 7, characterized in that, The A-pillar reinforcement assembly also includes a first connecting plate. One end of the first connecting plate is parallel to and fits against the first wall. The other end of the first connecting plate extends out of the first wall toward the vehicle cabin and is used to connect with the upper side panel.

10. The A-pillar reinforcement assembly according to claim 7, characterized in that, The A-pillar reinforcement assembly further includes a second connecting plate and / or a third connecting plate, wherein one end of the second connecting plate is parallel to and abuts against the second wall, the other end of the second connecting plate extends downward and is used to connect with the lower side plate, one end of the third connecting plate is parallel to and abuts against the third wall, and the other end of the third connecting plate extends downward and is used to connect with the lower side plate.

11. The A-pillar reinforcement assembly according to claim 7, characterized in that, The A-pillar reinforcement assembly also includes structural adhesive, which is disposed between the third wall and the lower side panel and fixes the third wall and the lower side panel. Alternatively, the A-pillar reinforcement assembly may further include a second connecting plate and structural adhesive. One end of the second connecting plate is connected to the second wall, and the other end of the second connecting plate extends downward and is used to connect to the lower side plate. The structural adhesive is disposed between the third wall and the lower side plate and fixes the third wall and the lower side plate.

12. The A-pillar reinforcement assembly according to claim 1, characterized in that, Along the length of the hot gas expansion tube, the rate of change of the circumference of the hot gas expansion tube is no greater than 8%. And / or, along the length and / or circumferential direction of the hot gas expansion tube, the wall thickness of a portion of the hot gas expansion tube is not equal to that of other regions, or, along the length and / or circumferential direction of the hot gas expansion tube, the wall thickness of the hot gas expansion tube is equal.

13. The side panel reinforcement assembly, characterized in that, The assembly includes a lower A-pillar reinforcement assembly, a B-pillar reinforcement assembly, a C-pillar reinforcement assembly, and an upper A-pillar reinforcement assembly as described in any one of claims 1-12. The B-pillar reinforcement assembly is located between the lower A-pillar reinforcement assembly and the C-pillar reinforcement assembly. A first segment is connected to the lower A-pillar reinforcement assembly, and a third segment is connected to both the B-pillar reinforcement assembly and the C-pillar reinforcement assembly.

14. A vehicle, characterized in that, Includes the side reinforcement assembly as described in any one of claims 13.

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