Automobile structure for reducing the amount of collision intrusion of side doors

Abstract

The present invention discloses a car structure for reducing the amount of intrusion caused by a side door collision, including car doors, specifically a front door 101 and a rear door 102, wherein the inner side of the front door 101 and the inner side of the rear door 102 are reinforced with a reinforcing beam plate structure 200, and the reinforcing beam plate structure 200 is configured to provide sufficient support for the side door to reduce the amount of intrusion. The scheme of the present invention can share the load, optimize the force transmission path, solve the problem of the door sinking due to the impact of the new barrier, and solve the problem of excessive intrusion of the occupants. Through actual testing, the door can almost achieve the effect of uniform energy absorption, and will not sink too much. The overall energy absorption effect is at least 24% higher than that of the traditional design. After optimization, the intrusion speed of the front door is reduced by 3km / h, and the intrusion amount is reduced by 110mm; the intrusion speed of the B-pillar is reduced by 1km / h, and the intrusion amount is reduced by 84mm; the intrusion speed of the rear door is reduced by 1.6km / h, and the intrusion amount is reduced by 56mm; by reasonably placing the structural support points, the overall score reaches the target level.

Description

Technical Field

[0001] The invention relates to the technical field of motor vehicle collision improvement, in particular to an automobile structure that reduces the collision intrusion amount of a side door. Background Art

[0002] Currently, due to the increase in the barrier and the hardening of the two end areas of the barrier, the door structure causes great intrusion, causing great damage to the front and rear passengers. Therefore, under the premise of complying with the new regulations, how to improve the excessive side intrusion, stabilize the collision force transmission path, improve the occupant intrusion damage value, and increase the passenger compartment survival space are the current challenges that need to be overcome. Summary of the invention

[0003] In view of the existing problems, the present invention provides a new technical solution, that is, by reasonably designing the side structure of the vehicle body, the front door and the rear door, it is possible to avoid the failure to effectively absorb energy and bear force during a collision, resulting in a high intrusion amount at the side measuring point and a large injury value for the occupants. After applying the structural solution of the present invention, it can effectively improve the excessive intrusion amount at the side, stabilize the collision force transmission path, improve the occupant intrusion injury value, and enhance the survival space of the occupant compartment.

[0004] Specifically, the detailed technical solution provided by the present invention is as follows:

[0005] A vehicle structure for reducing the amount of intrusion caused by a side door collision includes vehicle doors, specifically a front door 101 and a rear door 102. A reinforcing beam plate structure 200 is reinforced and installed in the inner side surface of the front door 101 and the inner side surface of the rear door 102. The reinforcing beam plate structure 200 is configured to provide sufficient support for the side door to reduce the amount of intrusion.

[0006] Furthermore, the reinforced beam-plate structure 200 includes an anti-collision main beam 201, which is designed obliquely on the side door; the anti-collision main beam 201 is respectively arranged on the front door 101 and the rear door 102; the oblique span of each anti-collision main beam 201 is configured to cover the front door 101 and the rear door 102 respectively.

[0007] Furthermore, the reinforcing beam plate structure 200 also includes a door bottom reinforcing beam 202, and the door bottom reinforcing beams 202 are respectively fixed at the door bottom positions of the front door 101 and the rear door 102; the door bottom reinforcing beam 202 is transversely arranged along the door bottom, and one end of the door bottom reinforcing beam 202 is fixed to the oblique lower end of the anti-collision main beam 201.

[0008] Furthermore, the door bottom reinforcement beam 202 includes a middle section and a left section and a right section respectively arranged on the middle section, and the left section, the middle section and the right section are formed into an integral structure by a hot forming stamping process.

[0009] Furthermore, the cross-sectional widths of the left section and the right section are greater than those of the middle section, so that the entire door bottom reinforcement beam has a structure that is narrow in the middle and wide at both sides.

[0010] Furthermore, the door bottom reinforcement beam 202 has an arched protrusion extending along its length direction, so that the cross-section of the door bottom reinforcement beam is "Ω"-shaped; when the door bottom reinforcement beam 202 is fixed at the door bottom position, the arched protrusion and the door bottom plane form a cavity.

[0011] Furthermore, the reinforced beam-plate structure 200 also includes an anti-collision longitudinal beam 203, the two ends of which are respectively fixed to the anti-collision main beam 201 and the door bottom reinforcement beam 202 by spot welding, and the anti-collision longitudinal beam 203, the anti-collision main beam 201 and the door bottom reinforcement beam 202 together form a triangular closed-loop structure.

[0012] Furthermore, the reinforced beam-plate structure 200 also includes a hinge reinforcement plate 204, and the hinge reinforcement plate 204 is respectively fixed to the hinge connection of the front door 101 and the hinge connection of the rear door 102, and the hinge reinforcement plate 204 is configured to stabilize the longitudinal force of the door and control its bending; the oblique upper end of the anti-collision main beam 201 is fixed on the hinge reinforcement plate 204.

[0013] Furthermore, an anti-collision beam 205 is fixed to the front door 101 , and the anti-collision beam 205 is fixed to the inner side surface of the front door and is arranged horizontally.

[0014] Furthermore, fixed structural members are respectively provided at the positions of the door sill, B-pillar and rear wheel cover of the car to provide sufficient supporting force to the side of the car.

[0015] The beneficial effects achieved by adopting this technical solution are:

[0016] By rationally designing the side structure of the vehicle body, the front door and the rear door, it is possible to avoid the failure to effectively absorb energy and bear force during a collision, resulting in high intrusion at the side measuring point and a large injury value for the occupants. After applying the structural solution of the present invention, it is possible to effectively improve the excessive intrusion at the side, stabilize the collision force transmission path, improve the occupant intrusion injury value, and enhance the occupant cabin survival space.

[0017] At the same time, the solution of the present invention can effectively share the load, optimize the force transmission path, solve the problem of the door sinking due to the impact of the new barrier, and solve the problem of excessive intrusion of the occupants. And through actual testing, the door can almost achieve the effect of uniform energy absorption, and will not sink too much. The overall energy absorption effect is at least 24% higher than the traditional design. The front door intrusion speed is reduced by 3km / h after optimization, and the intrusion amount is reduced by 110mm; the B-pillar intrusion speed is reduced by 1km / h, and the intrusion amount is reduced by 84mm; the rear door intrusion speed is reduced by 1.6km / h, and the intrusion amount is reduced by 56mm; by reasonably placing the structural support points, the overall score reaches the target level. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A plan view of the reinforced beam plate structure designed on the front door and rear door for the automobile structure in this scheme.

[0019] Figure 2 The plan view of the reinforcement structure designed for the side of the body of the automobile structure in this scheme.

[0020] Figure 3 This is the effect diagram of a vehicle side collision after applying this solution.

[0021] Among them: 100 door, 101 front door, 102 rear door, 200 reinforced beam structure, 201 anti-collision main beam, 202 door bottom reinforcement beam, 203 anti-collision longitudinal beam, 204 hinge reinforcement plate, 205 anti-collision cross beam, 301 door sill extruded aluminum, 302 B-pillar reinforcement plate, 303 reinforced partition, 304 wheel cover reinforcement CBS. DETAILED DESCRIPTION

[0022] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0023] This embodiment provides a vehicle structure that reduces the amount of intrusion caused by a side door collision, and improves the vehicle structure to adapt to the current new regulations. This is because the IIHS (Insurance Institute for Highway Safety) has already released the 2023 evaluation procedures, which will upgrade the regulations for the original side collision; at the same time, the two major domestic evaluation systems, C-NCAP (China New Car Assessment Program) and C-IASI (China Insurance Automobile Safety Index), have also launched research on side collisions and upgraded collision regulations. The third edition of C-IASI will be released in 2023 and will be officially implemented in 2024. In the side collision, the barrier vehicle will be completely replaced, and the mass of the trolley will be increased to 1,650kg (1,500kg for the second edition of C-IASI), and the distribution of the soft and hard areas of the barrier will be changed to make it closer to actual road traffic accidents in China. The C-NCAP 2025 version will be released in 2024 and officially implemented in 2025. The side impact barrier will be completely replaced, the vehicle mass will be increased to 1700kg, and the soft and hard areas of the barrier will be re-divided, but the vehicle collision speed will be increased to 60km / h. Both of these new barriers will impact the side structure of the vehicle. At this stage, through preliminary research, no car on the market can cope with this regulation.

[0024] To address this problem, the side structure of the vehicle needs to be optimized, especially in areas such as the front and rear doors, the B-pillar of the vehicle body, and the lower door sill. The current problem is that due to the introduction of new regulations, higher requirements are placed on barriers, and the areas at both ends of the barriers have become harder. Continuing to use the traditional door structure will result in a large amount of intrusion, which will cause greater damage to the front or rear passengers. The purpose of designing this technical solution is to improve the problem of excessive side intrusion, and to stabilize the collision force transmission path by adding structural parts to the side structure, so that the collision force generated can be more evenly dispersed on the door, thereby improving the occupant intrusion damage value and improving the survival space of the passenger compartment.

[0025] For this, the specific technical solutions adopted in this scheme are as follows:

[0026] A vehicle structure for reducing the amount of intrusion caused by a side door collision includes vehicle doors, specifically a front door 101 and a rear door 102. A reinforcing beam plate structure 200 is reinforced and installed in the inner side surface of the front door 101 and the inner side surface of the rear door 102. The reinforcing beam plate structure 200 is configured to provide sufficient support for the side door to reduce the amount of intrusion.

[0027] As a further improvement in this embodiment, the reinforced beam-plate structure 200 includes an anti-collision main beam 201, which is designed obliquely on the side door; the anti-collision main beam 201 is respectively arranged on the front door 101 and the rear door 102; the oblique span of each anti-collision main beam 201 is configured to cover the front door 101 and the rear door 102 respectively.

[0028] As a further improvement in this embodiment, the reinforcing beam plate structure 200 also includes a door bottom reinforcing beam 202, and the door bottom reinforcing beams 202 are respectively fixed at the door bottom positions of the front door 101 and the rear door 102; the door bottom reinforcing beam 202 is horizontally arranged along the door bottom, and one end of the door bottom reinforcing beam 202 is fixed to the oblique lower end of the anti-collision main beam 201.

[0029] As a further improvement in this embodiment, the door bottom reinforcement beam 202 includes a middle section and a left section and a right section respectively arranged on the middle section, and the left section, the middle section and the right section are formed into an integral structure by a hot forming stamping process.

[0030] As a further improvement in this embodiment, the cross-sectional widths of the left section and the right section are greater than those of the middle section, so that the entire door bottom reinforcement beam has a structure that is narrow in the middle and wide on both sides.

[0031] As a further improvement in this embodiment, the door bottom reinforcement beam 202 has an arched protrusion extending along its length direction, so that the cross-section of the door bottom reinforcement beam is "Ω"-shaped; when the door bottom reinforcement beam 202 is fixed at the door bottom position, the arched protrusion forms a cavity with the door bottom plane.

[0032] As a further improvement in this embodiment, the reinforced beam-plate structure 200 also includes an anti-collision longitudinal beam 203, the two ends of which are respectively fixed to the anti-collision main beam 201 and the door bottom reinforcement beam 202 by spot welding, and the anti-collision longitudinal beam 203, the anti-collision main beam 201 and the door bottom reinforcement beam 202 together form a triangular closed-loop structure.

[0033] As a further improvement in this embodiment, the reinforced beam-plate structure 200 also includes a hinge reinforcement plate 204, and the hinge reinforcement plate 204 is respectively fixed at the hinge connection of the front door 101 and the hinge connection of the rear door 102, and the hinge reinforcement plate 204 is configured to stabilize the longitudinal force of the door and control its bending; the oblique upper end of the anti-collision main beam 201 is fixed on the hinge reinforcement plate 204.

[0034] As a further improvement in this embodiment, an anti-collision beam 205 is also fixed on the front door 101, and the anti-collision beam 205 is fixed to the inner side surface of the front door and is horizontally arranged.

[0035] As a further improvement in this embodiment, fixed structural members are respectively provided at the positions of the door sill, B-pillar and rear wheel cover of the automobile to provide sufficient supporting force for the side of the automobile.

[0036] The above scheme is introduced in detail below.

[0037] In this scheme, the improvement is mainly aimed at the side doors of the car, that is, in this scheme, see Figure 1 The automobile structure provided includes a car door 100. As is known to all, the car door 100 generally includes a front door 101 and a rear door 102. We fixedly install a reinforcing beam plate structure 200 on the car door 100, and form a stable support for the car door 100 by utilizing the reinforcing beam plate structure 200 here, especially when a collision occurs, the reinforcing beam plate structure 200 here is utilized to reduce the deformation intrusion of the car door 100.

[0038] In this solution, the proposed reinforcing beam plate structure 200 is designed to correspond to the front door 101 and the rear door 102 one by one, that is, in this solution, one reinforcing beam plate structure 200 is not used to fix the front door 101 and the rear door 102 at the same time; instead, the reinforcing beam plate structure 200 is reinforced and installed on the inner side surface of the front door 101 and the inner side surface of the rear door 102. By adopting such a separate design, the front door 101 and the rear door 102 can be effectively supported and protected. When a collision occurs, under the protection of each reinforcing beam plate structure 200, the collision intrusion amount can be correspondingly reduced. That is, the provided reinforcing beam plate structure 200 is configured to provide sufficient support to the side doors (including the front door 101 and the rear door 102) to reduce the intrusion amount.

[0039] In order to conduct an in-depth structural analysis of the reinforced beam-slab structure 200 , the specific components of the reinforced beam-slab structure 200 are introduced in detail below.

[0040] In this solution, the reinforced beam-slab structure 200 includes an anti-collision main beam 201, which is an important component structure for effectively supporting the front door 101 and the rear door 102. The anti-collision main beam 201 is designed obliquely on the side door, that is, the anti-collision main beam 201 is obliquely arranged on the front door 101 and also obliquely arranged on the rear door 102; by respectively arranging the anti-collision main beams 201 on the front door 101 and the rear door 102; it has a great promoting effect on improving the stability of each door (the front door 101 and the rear door 102).

[0041] At the same time, in order to ensure that the collision force can be evenly distributed on the front door 101 and the rear door 102, in this solution, the oblique span of each anti-collision main beam 201 is configured to respectively cover the front door 101 and the rear door 102. It can be understood that one end of the anti-collision main beam 201 is fixed at the bottom position of the door, and the other end of the anti-collision main beam 201 is fixed at the top position of the door by oblique extension. Taking the front door 101 as an example, the specific position of the anti-collision main beam 201 fixed in the front door 101 is that the lower right end of the anti-collision main beam 201 is fixed at the right side of the bottom of the front door 101, and the upper left end of the anti-collision main beam 201 is fixed at the upper left hinge position of the front door 101. The anti-collision main beam 201 arranged in this way spans the entire front door 101. When a collision occurs, the upper left, middle and lower right parts of the anti-collision main beam 201 can effectively bear the force, thereby reducing the degree of intrusion of the front door 101.

[0042] The specific structure of the anti-collision main beam 201 on the rear door 102 is the same as the specific structure of the anti-collision main beam 201 on the front door 101, so the arrangement of the anti-collision main beam 201 on the rear door 102 will not be repeated here.

[0043] In this solution, the reinforcing beam plate structure 200 also includes a door bottom reinforcing beam 202, that is, a door bottom reinforcing beam 202 is fixed at the door bottom position of the front door 101 and the rear door 102 respectively; the door bottom reinforcing beam 202 here is arranged horizontally along the bottom of the door, and one end of the door bottom reinforcing beam 202 is fixed to the oblique lower end of the anti-collision main beam 201.

[0044] That is, the door bottom reinforcement beams 202 are welded and fixed at the door bottom positions of the front door 101 and the rear door 102, so as to stabilize the door bottom and improve the door sinking problem. The lower right end of the anti-collision main beam 201 introduced above is directly fixed on the door bottom reinforcement beam 202 here.

[0045] In order to form an effective support, the specific structure of the door bottom reinforcement beam 202 is optimized here, because in the collision process, the bottom of the door without a solution is easy to collapse into the passenger compartment, and the door bottom reinforcement beam 202 of this solution will stabilize the bottom of the door and improve the door sinking problem. Specifically, the door bottom reinforcement beam 202 includes a middle section B and a left section A and a right section C respectively arranged on the middle section B, and the left section A, the middle section B and the right section C are formed into an integrated structure by a hot forming stamping process.

[0046] In this embodiment, the cross-sectional widths of the left section and the right section are greater than the middle section, so that the entire door bottom reinforcement beam 202 is narrow in the middle and wide at both sides. The door bottom reinforcement beam 202 is designed to be wider at both sides, mainly to strengthen the fixing range of the door bottom reinforcement beam 202 and the inner plate at the bottom of the door. The wide fixing range is conducive to a more uniform distribution of the collision force.

[0047] At the same time, the door bottom reinforcement beam 202 has an arched protrusion extending along its length direction, so that the cross section of the door bottom reinforcement beam 202 is "Ω"-shaped; when the door bottom reinforcement beam 202 is fixed at the door bottom position, the arched protrusion and the door bottom plane form a cavity.

[0048] It can be simply understood that the arched protrusion on the door bottom reinforcement beam 202 is similar to a reinforcing rib structure, and the cavity structure formed with the door bottom plane has a great role in increasing the bending resistance of the door bottom. The edges on both sides of the arched protrusion are equivalent to flanges, and the plane formed by the flanges is fixed to the door bottom plane.

[0049] In order to enhance the fixing effect of the door bottom reinforcement beam 202 and the door bottom plane, the flange here is spot welded to the door bottom plane, thereby achieving the purpose of the reinforcement effect.

[0050] In this solution, the reinforced beam-plate structure 200 also includes an anti-collision longitudinal beam 203, the two ends of which are respectively fixed to the anti-collision main beam 201 and the door bottom reinforcement beam 202 by spot welding. The anti-collision longitudinal beam 203, the anti-collision main beam 201 and the door bottom reinforcement beam 202 together form a triangular closed-loop structure.

[0051] The main function of the anti-collision longitudinal beam 203 is to improve the stability of the anti-collision main beam 201 and the door bottom reinforcement beam 202, that is, through the anti-collision longitudinal beam 203 here, the connection relationship between the anti-collision main beam 201 and the door bottom reinforcement beam 202 is further strengthened; the door bottom reinforcement beam 202 is arranged horizontally, and the anti-collision main beam 201 is arranged obliquely, and an acute angle structure is formed between the anti-collision main beam 201 and the door bottom reinforcement beam 202, and then under the reinforcement of the anti-collision longitudinal beam 203, the anti-collision longitudinal beam 203, the anti-collision main beam 201 and the door bottom reinforcement beam 202 form a stable triangular area, which can effectively increase the side collision area and effectively reduce the intrusion amount caused by collision on the side of the door.

[0052] In this solution, the reinforced beam plate structure 200 also includes a hinge reinforcement plate 204, which is mainly used to strengthen the connection between the door and the body, thereby ensuring the stability of the door. The hinge reinforcement plate 204 is provided on both the front door 101 and the rear door 102. Specifically, a hinge reinforcement plate 204 is fixedly connected to the hinge connection of the front door 101, and a hinge reinforcement plate 204 is also fixed to the hinge connection of the rear door 102. By using the hinge reinforcement plate 204, the hinge reinforcement plate 204 is configured to stabilize the longitudinal force of the door and control its bending; improve the stability of the connection between the front door 101, the rear door 102 and the body.

[0053] Of course, the hinge reinforcement plate 204 designed here has another function, that is, to provide a stable installation fixing point for the anti-collision main beam 201. It can be understood that the inclined upper end of the anti-collision main beam 201 is fixed on the hinge reinforcement plate 204 here.

[0054] At this point, it is found through comparison that the anti-collision main beam 201, the door bottom reinforcement beam 202, the anti-collision longitudinal beam 203 and the hinge reinforcement plate 204 are fixed on both the front door 101 and the rear door 102; and they are connected to each other to provide stable support for the front door 101 or the rear door 102; at the same time, the anti-collision main beam 201, the door bottom reinforcement beam 202 and the anti-collision longitudinal beam 203 form a stable triangular area, which can effectively increase the side collision area. In the process of the door sinking inward, the triangular connection can stabilize the deformation mode of the side of the door, and effectively reduce the amount of intrusion on the side of the door caused by collision.

[0055] Meanwhile, in this embodiment, the design of the front door 101 is slightly different from that of the rear door 102. For example, in this solution, an anti-collision beam 205 is fixed on the front door 101, and the anti-collision beam 205 is fixed to the inner side of the front door 101 and arranged horizontally. The anti-collision beam 205 is used to further enhance the stable support of the front door 101 and strengthen its stability; of course, the anti-collision beam 205 is not provided on the rear door 102.

[0056] In this embodiment, reinforcing beam-plate structures 200 are designed on the inner side surfaces of the front door 101 and the rear door 102 respectively, thereby achieving stability of the front door 101 and the rear door 102. When a collision occurs, the reinforcing beam-plate structure 200 is used to reduce the deformation between the front door 101 and the rear door 102, thereby reducing the problem of excessive side intrusion. At the same time, the anti-collision main beam 201, the door bottom reinforcement beam 202, the anti-collision longitudinal beam 203 and the hinge reinforcement plate 204 are interconnected and fixed to stabilize the collision force transmission path, improve the occupant intrusion damage value, and enhance the survival space of the occupant compartment.

[0057] In addition, we have also made further improvements in the areas close to the doors, such as the door sills, B-pillars and rear wheel arches, to improve the stability of the side structure. Figure 2 In this solution, fixed structural members are respectively provided at the door sill, B-pillar and rear wheel cover of the car to provide sufficient supporting force for the side of the car.

[0058] For example, in the present embodiment, a threshold extruded aluminum 301 is fixedly disposed at the threshold of the automobile, and the threshold extruded aluminum 301 extends along the length direction of the threshold, thereby achieving the purpose of strengthening the door threshold.

[0059] In this solution, the designed door sill extruded aluminum 301 is a 90° bent structure, specifically including a vertical bent edge and a horizontal bent edge. The horizontal bent edge of the door sill extruded aluminum 301 is arranged above the vertical bent edge, and the vertical bent edge is fixed to the side of the car door sill. The horizontal bent edge of the door sill extruded aluminum 301 overlaps with the door bottom reinforcement beam 202.

[0060] The anti-collision structure of the door sill extruded aluminum 301 is the main core component for strengthening the door sill, wherein the door bottom reinforcement beam 202 at the vehicle door can overlap with it. When a collision occurs, the impact force received at the door bottom reinforcement beam 202 can be partially transmitted to the vehicle body floor through the door sill extruded aluminum 301, thereby effectively dispersing the impact force.

[0061] In this solution, a structural member is provided at the B-pillar position, which is a B-pillar reinforcement plate 302. The B-pillar reinforcement plate 302 is mainly used to stabilize the deformation of the B-pillar and provide overlap support for the door (the door is mainly overlapped in this area). The overall structure of the B-pillar reinforcement plate 302 is wider at the lower end and narrower at the upper end, and the transition between the wide and narrow is a smooth curve transition; through such a structural design, the B-pillar reinforcement plate 302 can be stably fixed on the B-pillar, forming an effective strong support for the B-pillar.

[0062] Optionally, a cavity is formed at the lower end of the B-pillar reinforcement plate 302, so that when a collision impact force is generated, a portion of the force can be transferred to the crossbeam of the bottom plate.

[0063] In this solution, the structural members added at the rear wheel housing are the reinforcing partition 303 and the wheel housing reinforcing CBS 304, which are used to prevent the vehicle body from collapsing due to the overlap of the door. That is, by adopting the above structural design, the support problem of the rear door anti-collision main beam 201 is mainly stabilized. The former can adopt the reinforcing partition 303, and the latter can adopt the CBS to fill the cavity, corresponding to the overlap position of the rear door anti-collision main beam.

[0064] Based on this, it can be concluded that the main application solutions are provided in this solution:

[0065] The design idea of ​​the front and rear doors is mainly to increase the overlap points with the body structure and stabilize the energy-absorbing deformation structure, so as to solve the problem of the doors sinking into the passenger compartment due to collision with the new barrier (because through a survey of the market, the doors will basically sink into the passenger compartment).

[0066] In the technology provided by this solution, the energy absorption structure and basic distribution of the positions of the front and rear doors are consistent, except that the rear door does not have an anti-collision beam 205. Figure 1It is proposed that the anti-collision main beam 201 + anti-collision longitudinal beam 203 + door bottom reinforcement beam 202 form a stable triangular area, which can increase the side collision area. In the collision process, the bottom of the door without a solution is easy to collapse into the passenger compartment, increasing Figure 1 The door bottom reinforcement beam 202 in the number will stabilize the bottom of the door and improve the door sinking problem. It should be noted that the cross section of the door bottom reinforcement beam 202 forms a cavity structure with the door inner panel, and the flange of the door bottom reinforcement beam 202 is spot welded to the door inner panel. The cross section of the anti-collision longitudinal beam 203 is also a cavity structure to increase the bending resistance, and the two ends of the anti-collision longitudinal beam 203 overlap the reinforcement ribs and cavity of the anti-collision main beam 201 and the door bottom reinforcement beam 202, and are connected in the form of spot welding; in the process of the door sinking inward, the triangular connection can stabilize the side deformation mode of the door. The anti-collision main beam 201 overlaps the door inner panel. The hinge reinforcement plate 204 can stabilize the longitudinal direction of the door and control bending.

[0067] At the same time, some solutions that can be improved are also provided:

[0068] In the root area of ​​the B-pillar, a B-pillar reinforcement plate 302 is arranged at the bending point, thereby forming an effective support and being able to disperse the force.

[0069] The door sill extruded aluminum 301 anti-collision structure is the main core component of the door sill reinforcement. The door bottom reinforcement beam can overlap with it and form a larger overlap area with the bottom of the door as much as possible to increase the contact points, disperse the energy, and transfer part of the force to the floor beam. (There is no such structure in the current body plan).

[0070] Structural parts are added to the rear wheel arch area, specifically the reinforced baffle 303 and the wheel arch reinforcement CBS 304, that is, the former can use a reinforced baffle and the latter can use a CBS-filled cavity, corresponding to the overlap position of the main anti-collision beam of the rear door; to prevent the body from collapsing at the door overlap.

[0071] See also Figure 3 This technical solution can effectively share the load, optimize the force transmission path, and solve the problem of the door sinking due to the impact of the new barrier, and also solve the problem of excessive intrusion of the occupants. And through actual testing, the door can almost achieve the effect of uniform energy absorption, and there will be no excessive sinking. The overall energy absorption effect is at least 24% higher than the traditional design. The front door intrusion speed is reduced by 3km / h after optimization, and the intrusion amount is reduced by 110mm; the B-pillar intrusion speed is reduced by 1km / h, and the intrusion amount is reduced by 84mm; the rear door intrusion speed is reduced by 1.6km / h, and the intrusion amount is reduced by 56mm; by reasonably placing the structural support points, the overall score reaches the target level.

[0072] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0073] It should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the technical product is usually placed when in use. They are only for the convenience of describing the present technology and simplifying the description, and do 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 technology. In addition, "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. Therefore, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In the description of the present invention, unless otherwise specified, the meaning of "multiple" is two or more.

[0074] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0075] In the description of this technology, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this technology can be understood according to specific circumstances.

[0076] The above are only preferred implementations of the present technology. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of the present technology, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the technical concept and technical solution to other occasions without improvement, should be regarded as the protection scope of the present technology.

Claims

1. A vehicle structure for reducing the amount of collision intrusion of a side door, comprising a vehicle door (100), specifically a front door (101) and a rear door (102), characterized in that: A reinforcing beam plate structure (200) is installed in the inner side surface of the front door (101) and the inner side surface of the rear door (102), and the reinforcing beam plate structure (200) is configured to provide sufficient support to the side door to reduce the intrusion amount; fixed structural parts are respectively added at the positions of the door sill, B-pillar and rear wheel cover of the car to provide sufficient support force to the side of the car; The reinforcing beam plate structure (200) comprises an anti-collision main beam (201), and the anti-collision main beam (201) is obliquely designed on the side door; the reinforcing beam plate structure (200) further comprises a door bottom reinforcing beam (202), and the door bottom reinforcing beam (202) is respectively fixed at the door bottom position of the front door (101) and the rear door (102); the reinforcing beam plate structure (200) further comprises an anti-collision longitudinal beam (203), and the two ends of the anti-collision longitudinal beam (203) are respectively fixed to the anti-collision main beam (201) and the door bottom reinforcing beam (202) in the form of spot welding, and the anti-collision longitudinal beam (203), the anti-collision main beam (201) and the door bottom reinforcing beam (202) together form a triangular closed loop structure; A threshold extruded aluminum (301) is fixedly arranged at the threshold of the automobile. The threshold extruded aluminum (301) extends along the length direction of the threshold. The threshold extruded aluminum (301) is a 90° bent structure, specifically comprising a vertical bent edge and a horizontal bent edge. The horizontal bent edge of the threshold extruded aluminum (301) is arranged above the vertical bent edge. The vertical bent edge is fixed to the side of the automobile threshold. The horizontal bent edge of the threshold extruded aluminum (301) overlaps with the door bottom reinforcement beam (301). A structural member is arranged at the B-pillar position, which is a B-pillar reinforcement plate (302). The B-pillar reinforcement plate (302) is a structure with a wider lower end and a narrower upper end, and a smooth curve transition is adopted between the width and the narrowness. A cavity is also formed at the lower end of the B-pillar reinforcement plate (302). The structural members added at the rear wheel cover are a reinforcement partition plate (303) and a wheel cover reinforcement CBS (304) for preventing the vehicle body from collapsing due to the overlap of the door.

2. The vehicle structure for reducing the amount of side door collision intrusion according to claim 1, characterized in that: The anti-collision main beam (201) is respectively arranged on the front door (101) and the rear door (102); the oblique span of each anti-collision main beam (201) is configured to cover the front door (101) and the rear door (102) respectively.

3. The vehicle structure for reducing the amount of intrusion caused by a side door collision according to claim 2, characterized in that: The door bottom reinforcement beam (202) is arranged transversely along the bottom of the vehicle door, and one end of the door bottom reinforcement beam (202) is fixed to the oblique lower end of the anti-collision main beam (201).

4. The vehicle structure for reducing the amount of intrusion caused by a side door collision according to claim 3, characterized in that: The door bottom reinforcement beam (202) comprises a middle section and a left section and a right section respectively arranged on the middle section, and the left section, the middle section and the right section are formed into an integral structure by a hot forming stamping process.

5. The vehicle structure for reducing the amount of intrusion caused by a side door collision according to claim 4, characterized in that: The cross-sectional widths of the left section and the right section are greater than those of the middle section, so that the entire door bottom reinforcement beam (202) has a structure that is narrow in the middle and wide at both sides.

6. The vehicle structure for reducing the amount of intrusion caused by a side door collision according to claim 5, characterized in that: The door bottom reinforcement beam (202) has an arched protrusion extending along its length direction, so that the cross section of the door bottom reinforcement beam (202) is in an "Ω" shape; when the door bottom reinforcement beam (202) is fixed at the door bottom position, the arched protrusion and the door bottom plane form a cavity.

7. The vehicle structure for reducing the amount of intrusion caused by a side door collision according to claim 1, characterized in that: The reinforcing beam plate structure (200) further comprises a hinge reinforcing plate (204), the hinge connection of the front door (101) and the hinge connection of the rear door (102) being respectively fixed with the hinge reinforcing plate (204), the hinge reinforcing plate (204) being configured to stabilize the longitudinal force of the door and control its bending; the oblique upper end of the anti-collision main beam (201) is fixed on the hinge reinforcing plate (204).

8. The vehicle structure for reducing the amount of intrusion caused by a side door collision according to claim 1, characterized in that: An anti-collision beam (205) is also fixed on the front door (101), and the anti-collision beam (205) is fixed on the inner side of the front door (101) and is arranged horizontally.

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