Vehicle body side structure and vehicle
By using a welded and integrally formed double-door ring body structure, the problems of high equipment requirements, high cost, and poor safety of existing vehicle body side reinforcement plates are solved, achieving lightweight and cost-reducing design of the vehicle body and improving collision safety.
Patent Information
- Application Number
- CN202520088286.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-14
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2035-01-14
AI Technical Summary
Existing vehicle body side reinforcement panel structures suffer from problems such as high equipment requirements, high labor costs, difficulty in controlling molding precision, increased weight, and poor collision safety.
The double door ring body structure is formed by stamping multiple plates welded together, including A-pillar, B-pillar and C-pillar components. It is formed by laser welding and one-piece hot stamping, with a first patch plate to improve the connection strength, and hot-formed steel plates of different thicknesses and materials are selected to meet the strength requirements of different areas.
The reduction in sheet metal usage and welding processes improved material utilization and production efficiency, reduced weight and manufacturing costs, enhanced collision safety, and achieved lightweight and cost-effective vehicle body design.
Smart Images
Figure CN223736123U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of car body side, especially relates to a car body side structure, and simultaneously, the utility model relates to a vehicle with the car body side structure in the car body side. BACKGROUND
[0002] The side wall reinforcing plate in the vehicle body is an important structural part of the car body side, which is usually composed of A-pillar reinforcing plate, B-pillar reinforcing plate, upper side beam reinforcing plate, C-pillar reinforcing plate and rocker reinforcing plate, and after stamping of each component, it is connected into a side wall door ring structure by spot welding.
[0003] The advantage of the existing side wall reinforcing plate structure is that the tonnage requirement of the stamping machine is low, and the product forming is good. However, it also has the disadvantages of large demand for equipment and tooling quantity, high labor cost, and difficult effective control of forming precision, and at the same time, the spot welding method for assembling each component also has multiple lap joints, which not only leads to the increase of the weight of the whole door ring structure and the poor continuity of force transmission, but also is not conducive to the improvement of vehicle lightweight and collision safety. SUMMARY
[0004] Therefore, the utility model aims at providing a car body side structure which helps to improve the collision safety and is conducive to the design of cost reduction and weight reduction.
[0005] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:
[0006] A car body side structure, comprising a double-door ring body formed by stamping a plurality of plate components welded together;
[0007] The double-door ring body comprises an A-pillar assembly, a B-pillar assembly and a C-pillar assembly connected in sequence;
[0008] The A-pillar assembly and the B-pillar assembly form a front door ring, and the B-pillar assembly and the C-pillar assembly form a rear door ring;
[0009] The A-pillar assembly has an A-pillar upper segment reinforcing plate, the B-pillar assembly has a B-pillar upper segment reinforcing plate, the top end of the A-pillar upper segment reinforcing plate is connected with the B-pillar upper segment reinforcing plate, and a first patch plate is arranged between the A-pillar upper segment reinforcing plate and the B-pillar upper segment reinforcing plate.
[0010] Further, the A-pillar assembly further has an A-pillar lower section reinforcing plate connected with the A-pillar upper section reinforcing plate, and a rocker beam reinforcing plate connected with the A-pillar lower section reinforcing plate; the B-pillar assembly further has a B-pillar lower section reinforcing plate connected with the B-pillar upper section reinforcing plate, and the B-pillar lower section reinforcing plate is connected with the rocker beam reinforcing plate; the C-pillar assembly has a rear extension plate of the upper side beam, a C-pillar reinforcing plate and a rear extension plate of the rocker beam connected in sequence; the rear extension plate of the upper side beam is connected with the B-pillar upper section reinforcing plate, and the rear extension plate of the rocker beam is connected with the B-pillar lower section reinforcing plate.
[0011] Further, the thickness t3 of the rocker beam reinforcing plate, the thickness t2 of the A-pillar lower section reinforcing plate and the thickness t1 of the A-pillar upper section reinforcing plate satisfy t3 < t2 < t1; and / or, the thickness t5 of the B-pillar lower section reinforcing plate and the thickness t4 of the B-pillar upper section reinforcing plate satisfy t5 < t4.
[0012] Further, the thickness t6 of the rear extension plate of the upper side beam, the thickness t7 of the C-pillar reinforcing plate and the thickness t4 of the B-pillar upper section reinforcing plate satisfy t7 < t6 < t4, and / or, the thickness t7 of the C-pillar reinforcing plate, the thickness t8 of the rear extension plate of the rocker beam and the thickness t5 of the B-pillar lower section reinforcing plate satisfy t7 < t8 < t5.
[0013] Further, the thickness t9 of the first patch plate and the thickness t1 of the A-pillar upper section reinforcing plate satisfy t1 < t9, and the thickness t9 of the first patch plate and the thickness t4 of the B-pillar upper section reinforcing plate satisfy t4 < t9; and / or, the A-pillar lower section reinforcing plate is provided with a second patch plate, and the second patch plate is arranged close to the A-pillar upper section reinforcing plate.
[0014] Further, the A-pillar lower section reinforcing plate comprises a main section arranged in the up-down direction of the whole vehicle, and a rocker beam connecting section below the main section; the A-pillar upper section reinforcing plate comprises a lower connecting section, an intermediate section and an upper connecting section connected in sequence from bottom to top; the length sum L1 of the intermediate section, the lower connecting section and the upper connecting section, and the length sum L2 of the main section and the rocker beam connecting section satisfy L1: L2 = 6: 4.5 ~ 6: 3.5.
[0015] Further, the B-pillar upper section reinforcing plate comprises a first transverse section arranged along the front-rear direction of the whole vehicle, and a first longitudinal section arranged along the up-down direction of the whole vehicle; the B-pillar lower section reinforcing plate comprises a second transverse section arranged along the front-rear direction of the whole vehicle, and a second longitudinal section arranged along the up-down direction of the whole vehicle; the rocker beam rear extension plate comprises a third transverse section arranged along the front-rear direction of the whole vehicle; the first longitudinal section and the second longitudinal section are connected, wherein the length L3 of the first longitudinal section and the length L4 of the second longitudinal section satisfy: L3:L4=6:3~6:2, and / or the length L5 of the rocker beam reinforcing plate, the length L6 of the second transverse section and the length L7 of the third transverse section satisfy: L5:L6:L7=3:4.5:3~3:3.5:2.
[0016] Further, the rocker beam rear extension plate further comprises a first inclined section connected with the third transverse section, and the first inclined section is connected with the lower end of the C-pillar reinforcing plate; the upper side beam rear extension plate comprises a fourth transverse section arranged along the front-rear direction of the whole vehicle, and a second inclined section connected with the fourth transverse section, and the second inclined section is connected with the upper end of the C-pillar reinforcing plate; the length sum L8 of the fourth transverse section and the second inclined section, the length L9 of the C-pillar reinforcing plate, and the length sum L10 of the third transverse section and the first inclined section satisfy: L8:L9:L10=3:5.5:3~3:4.5:2.
[0017] Further, the B-pillar lower section reinforcing plate and the rocker beam rear extension plate are both made of a hot forming steel plate with a tensile strength of 370MPa-800MPa; and / or the A-pillar upper section reinforcing plate, the A-pillar lower section reinforcing plate, the rocker beam reinforcing plate, the B-pillar upper section reinforcing plate, the upper side beam rear extension plate, the C-pillar reinforcing plate and the first patch plate are all made of a hot forming steel plate with a tensile strength of 1200MPa-2000MPa.
[0018] Compared with the prior art, the utility model has the following advantages:
[0019] The utility model discloses a vehicle body side structure, adopt by the stamping forming of a plurality of plate members who are welded together double door ring body, compared with the traditional spot welding lap joint mode, can integrate a plurality of parts into a whole, not only can reduce the use of sheet material, reduce the welding procedure, benefit the promotion material utilization and production efficiency, and solve the problem of the weight of the vehicle body is too heavy and the high preparation cost, also will reduce the lap joint structure, benefit the promotion double door ring body's transmission continuity, and set up the first patch plate, can promote the connection strength between A column upper segment reinforcing plate and B column upper segment reinforcing plate, guarantee the welding place between the both does not tear in the crash, and then promote the crash safety, simultaneously, adopt the first patch plate and double door ring body integrated molding, also can save the die development cost and the investment of fixture, gauge and other tooling equipment, thereby benefit the promotion of the crash safety of the vehicle body side structure, and realize the purpose of reducing the cost and reducing the weight design.
[0020] In addition, the plate thickness t1 of the A column upper segment reinforcing plate, the plate thickness t2 of the A column lower segment reinforcing plate and the plate thickness t3 of the rocker beam reinforcing plate satisfy: t3 < t2 < t1, not only benefit guaranteeing that the A column part of the vehicle body has higher structural strength and improving the anti-collapse ability, but also benefit the transmission of the crash force to the rocker beam. The plate thickness t4 of the B column upper segment reinforcing plate and the plate thickness t5 of the B column lower segment reinforcing plate satisfy: t5 < t4, which can improve the structural strength of the upper part of the B column region of the vehicle body and improve the transmission effect of the crash force from top to bottom, thereby benefiting the decomposition, dissipation and absorption of the force. The plate thickness t6 of the upper side beam rear extension plate, the plate thickness t7 of the C column reinforcing plate and the plate thickness t4 of the B column upper segment reinforcing plate satisfy: t7 < t6 < t4, and the plate thickness t7 of the C column reinforcing plate, the plate thickness t8 of the rocker beam rear extension plate and the plate thickness t5 of the B column lower segment reinforcing plate satisfy: t7 < t8 < t5, which can benefit satisfying the lightweight design of the C column region of the vehicle body while improving the transmission and dissipation effect of the crash force at the rear door ring position.
[0021] Moreover, the plate thickness t9 of the first patch plate and the plate thickness t1 of the A column upper segment reinforcing plate satisfy: t1 < t9, and the plate thickness t9 of the first patch plate and the plate thickness t4 of the B column upper segment reinforcing plate satisfy: t4 < t9, which can make the first patch plate have sufficient structural strength to benefit ensuring the connection strength between the A column upper segment reinforcing plate and the B column upper segment reinforcing plate, especially guaranteeing that the weld of the A column upper segment reinforcing plate and the B column upper segment reinforcing plate does not tear in the crash. The second patch plate can reduce the intrusion amount of the leg region of the driver and the front passenger in the crash process and satisfy the leg protection demand of the driver and the front passenger.
[0022] Second, the length sum L1 of the intermediate section, the lower connecting section and the upper connecting section, and the length sum L2 of the main body section and the threshold connecting section satisfy: L1:L2=6:4.5~6:3.5, the length L3 of the first longitudinal section and the length L4 of the second longitudinal section satisfy: L3:L4=6:3~6:2, the length L5 of the threshold beam reinforcing plate, the length L6 of the second transverse section and the length L7 of the third transverse section satisfy: L5:L6:L7=3:4.5:3~3:3.5:2, and the length sum L8 of the fourth transverse section and the second inclined section, the length L9 of the C-pillar reinforcing plate and the length sum L10 of the third transverse section and the first inclined section satisfy: L8:L9:L10=3:5.5:3~3:4.5:2, which not only helps to meet the overall structural strength requirement and space design of the body side structure, but also improves the material utilization.
[0023] In addition, the B-pillar lower section reinforcing plate and the threshold beam rear extension plate are both made of a hot forming steel plate with a tensile strength of 370MPa-800MPa, which can help to form a crush zone to improve the energy absorption effect and protect the survival space. The A-pillar upper section reinforcing plate, the A-pillar lower section reinforcing plate, the threshold beam reinforcing plate, the B-pillar upper section reinforcing plate, the upper side beam rear extension plate, the C-pillar reinforcing plate and the first patch plate are all made of a hot forming steel plate with a tensile strength of 1200MPa-2000MPa, which can help to ensure that the corresponding regions of the plates have high structural strength and good impact resistance, and can also take into account the lightweight design under the condition of meeting the safety performance.
[0024] Another purpose of the utility model is to provide a vehicle, the vehicle body of the vehicle is equipped with the vehicle body side structure as described above.
[0025] The vehicle is equipped with the vehicle body side structure as described above, which can realize cost reduction design and lightweight design, and also has good crash performance, so that the overall vehicle quality can be improved. BRIEF DESCRIPTION OF DRAWINGS
[0026] The drawings constituting a part of the utility model are used to provide further understanding of the utility model, and the illustrative embodiment of the utility model and the description thereof are used to explain the utility model and do not constitute improper limitation on the utility model. In the drawings:
[0027] Figure 1 It is an overall structure schematic view of the vehicle body side structure described in the embodiment of the utility model;
[0028] Figure 2 It is an overall structure schematic view of the vehicle body side structure described in the embodiment of the utility model; Figure 1 It is an overall structure schematic view of the vehicle body side structure described in the embodiment of the utility model;
[0029] Figure 3 It is an overall structure schematic view of the vehicle body side structure described in the embodiment of the utility model; Figure 1Structure schematic view of the structure shown in the middle from another perspective;
[0030] Figure 4 Structure schematic view of the first patch plate according to the embodiment of the utility model;
[0031] Figure 5 Structure schematic view of the second patch plate according to the embodiment of the utility model;
[0032] Explanation of reference signs:
[0033] 10, A pillar assembly; 11, A pillar upper segment reinforcing plate; 111, lower connecting segment; 112, middle segment; 113, upper connecting segment; 12, A pillar lower segment reinforcing plate; 121, main body segment; 122, door sill connecting segment; 13, door sill beam reinforcing plate;
[0034] 20, B pillar assembly; 21, B pillar upper segment reinforcing plate; 211, first transverse segment; 212, first longitudinal segment; 22, B pillar lower segment reinforcing plate; 221, second transverse segment; 222, second longitudinal segment;
[0035] 30, C pillar assembly; 31, upper side beam rear extension plate; 311, fourth transverse segment; 312, second inclined segment; 32, C pillar reinforcing plate; 33, door sill beam rear extension plate; 331, third transverse segment; 332, first inclined segment;
[0036] 40, first patch plate; 50, second patch plate. DETAILED DESCRIPTION
[0037] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.
[0038] In the following description, specific details are set forth such as particular system configurations, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. However, it should be apparent to those skilled in the art that the present application can be practiced without such specific details. In other instances, well known systems, structures, circuits, and techniques have been not been described in detail in order to avoid obscuring the application.
[0039] In the description of the utility model, it should be noted that if the terms indicating the orientation or position relationship such as "upper", "lower", "inner", "outer" appear, it is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model. In addition, if the terms "first", "second" appear, they are also only for the purpose of description, and cannot be understood as indicating or implying relative importance.
[0040] In the vehicle in which the body side structure described in the present application is used as an example, the orientation words such as "upper, lower, left, right, front, and rear" used in the embodiments are defined with reference to the up-down direction (also referred to as the height direction or the vehicle Z direction), the left-right direction (also referred to as the width direction or the vehicle Y direction), and the front-rear direction (also referred to as the length direction or the vehicle X direction) of the vehicle. The "inner" and "outer" are defined with reference to the contour of the corresponding component, for example, the "inner" and "outer" are defined with reference to the contour of the vehicle, the side close to the middle of the vehicle is "inner", and the opposite side is "outer".
[0041] In addition, in the description of the present application, unless otherwise explicitly defined, the terms "mounting", "connecting", "connection", and "connector" should be understood in a broad sense. For example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood in combination with the specific circumstances.
[0042] The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.
[0043] Embodiment One
[0044] The present embodiment relates to a body side structure, which has good crash performance, and is also beneficial to the lightweight design and cost reduction of the vehicle.
[0045] As shown in the overall structure, Figures 1 to 5 The body side structure of the present embodiment includes a double door ring body stamped and formed by a plurality of panel pieces spliced together. The double door ring body includes an A-pillar assembly 10, a B-pillar assembly 20, and a C-pillar assembly 30 connected in sequence.
[0046] Furthermore, the A-pillar assembly 10 and the B-pillar assembly 20 form a front door ring, and the B-pillar assembly 20 and the C-pillar assembly 30 form a rear door ring. The A-pillar assembly 10 has an A-pillar upper segment reinforcing plate 11, and the B-pillar assembly 20 has a B-pillar upper segment reinforcing plate 21. The top end of the A-pillar upper segment reinforcing plate 11 is connected to the B-pillar upper segment reinforcing plate 21, and a first patch plate 40 is arranged between the A-pillar upper segment reinforcing plate 11 and the B-pillar upper segment reinforcing plate 21.
[0047] At this time, as set above, the double door ring body formed by stamping the plurality of plate pieces welded together can integrate a plurality of components into one whole compared to the traditional spot welding lap joint mode, which can not only reduce the use of plate materials, reduce the welding process, improve material utilization and production efficiency, and solve the problems of excessive weight of the vehicle body and high preparation cost, but also reduce the lap joint structure, which is conducive to improving the continuity of the force transmission of the double door ring body, and the first patch plate 40 can improve the connection strength between the A-pillar upper segment reinforcement plate 11 and the B-pillar upper segment reinforcement plate 21, and ensure that the welding between the two does not tear in a collision, thereby improving the collision safety, and at the same time, the first patch plate 40 and the double door ring body are integrally formed, which can also save mold development costs and investment in tooling equipment such as fixtures and gauges, reducing labor costs, thereby facilitating the improvement of the collision safety of the vehicle body side structure and achieving the purpose of reducing the cost and weight design.
[0048] Based on the above overall introduction, in detail, in the embodiment, in specific implementation, the double door ring body is first welded together by laser welding and then integrally hot stamping formed by a plurality of plate pieces, wherein there is no mechanical contact in the laser welding process, which can easily ensure that the welding position does not deform due to stress, and the alloy connection is achieved by melting the smallest amount of material, which can greatly improve the welding quality and efficiency. At the same time, the laser weld has a large depth-width ratio, and the weld heat affected zone is very small, and the welding quality is good.
[0049] In the embodiment, as shown in Figure 1 and Figure 2 , the A-pillar assembly 10 further has an A-pillar lower segment reinforcement plate 12 connected with the A-pillar upper segment reinforcement plate 11, and a rocker beam reinforcement plate 13 connected with the A-pillar lower segment reinforcement plate 12. Moreover, the B-pillar assembly 20 further has a B-pillar lower segment reinforcement plate 22 connected with the B-pillar upper segment reinforcement plate 21, and the B-pillar lower segment reinforcement plate 22 is connected with the rocker beam reinforcement plate 13. At the same time, the C-pillar assembly 30 has an upper side beam rear extension plate 31, a C-pillar reinforcement plate 32 and a rocker beam rear extension plate 33 connected in sequence, the upper side beam rear extension plate 31 is connected with the B-pillar upper segment reinforcement plate 21, and the rocker beam rear extension plate 33 is connected with the B-pillar lower segment reinforcement plate 22.
[0050] In specific implementation, the A-pillar upper segment reinforcement plate 11, the A-pillar lower segment reinforcement plate 12, the rocker beam reinforcement plate 13, the B-pillar upper segment reinforcement plate 21 and the B-pillar lower segment reinforcement plate 22 are circumferentially constructed and welded to form a front door ring, and the B-pillar upper segment reinforcement plate 21, the B-pillar lower segment reinforcement plate 22, the upper side beam rear extension plate 31, the C-pillar reinforcement plate 32 and the rocker beam rear extension plate 33 are circumferentially constructed and welded to form a rear door ring.
[0051] In addition, as a preferred implementation form, in the embodiment, the B-pillar lower section reinforcing plate 22 and the rocker beam rear extension plate 33 are both made of a hot-formed steel plate with a tensile strength of 370-800 MPa. Meanwhile, as a preferred implementation form, the A-pillar upper section reinforcing plate 11, the A-pillar lower section reinforcing plate 12, the rocker beam reinforcing plate 13, the B-pillar upper section reinforcing plate 21, the upper side beam rear extension plate 31, the C-pillar reinforcing plate 32, and the first patch plate 40 are all made of a hot-formed steel plate with a tensile strength of 1200-2000 MPa.
[0052] In this way, not only is it beneficial to form a crush zone in the B-pillar lower section reinforcing plate 22 area and the rocker beam rear extension plate 33 area to improve the energy absorption effect of the side portion of the vehicle body and protect the living space, but also it can ensure that the corresponding areas of other plates have higher structural strength and better impact resistance, thereby meeting the safety performance requirements while also taking into account lightweighting.
[0053] In particular implementations, the B-pillar lower section reinforcing plate 22 and the rocker beam rear extension plate 33 can both preferably be made of a hot-formed steel plate with a tensile strength of 550 MPa, and the A-pillar upper section reinforcing plate 11, the A-pillar lower section reinforcing plate 12, the rocker beam reinforcing plate 13, the B-pillar upper section reinforcing plate 21, the upper side beam rear extension plate 31, the C-pillar reinforcing plate 32, and the first patch plate 40 can all preferably be made of a hot-formed steel plate with a tensile strength of 1500 MPa.
[0054] In addition, as a preferred implementation form in the embodiment, the thickness t1 of the A-pillar upper section reinforcing plate 11, the thickness t2 of the A-pillar lower section reinforcing plate 12, and the thickness t3 of the rocker beam reinforcing plate 13 satisfy the relationship t3 < t2 < t1. The main advantage of this arrangement is that it not only helps to ensure that the A-pillar portion of the vehicle body has high structural strength and improves the crush resistance, but also facilitates the transmission of impact forces to the rocker beam.
[0055] Similarly, to ensure the crash performance of the B-pillar area, as a preferred implementation form in the embodiment, the thickness t4 of the B-pillar upper section reinforcing plate 21 and the thickness t5 of the B-pillar lower section reinforcing plate 22 satisfy the relationship t5 < t4, thereby improving the structural strength of the upper portion of the B-pillar area of the vehicle body and improving the downward transmission of impact forces, which in turn facilitates the decomposition, dissipation, and absorption of forces.
[0056] In addition, as a preferred implementation form in the embodiment, the thickness t6 of the upper side beam rear extension plate 31, the thickness t7 of the C-pillar reinforcing plate 32, and the thickness t4 of the B-pillar upper section reinforcing plate 21 satisfy the relationship t7 < t6 < t4, and the thickness t7 of the C-pillar reinforcing plate 32, the thickness t8 of the rocker beam rear extension plate 33, and the thickness t5 of the B-pillar lower section reinforcing plate 22 satisfy the relationship t7 < t8 < t5.
[0057] It can be understood that, through the different thickness designs among the upper side rail rear extension plate 31, the C-pillar reinforcement plate 32, the upper B-pillar reinforcement plate 21, and the rocker rail rear extension plate 33, the collision force transmission and dissipation effect at the rear door ring position can be improved while the C-pillar area lightweight design of the vehicle body is facilitated.
[0058] In this embodiment, as a preferred implementation form, the thickness t9 of the first patch plate 40 and the thickness t1 of the upper A-pillar reinforcement plate 11 satisfy t1 < t9, and the thickness t9 of the first patch plate 40 and the thickness t4 of the upper B-pillar reinforcement plate 21 satisfy t4 < t9. The advantage of such a setting is mainly that the first patch plate 40 has sufficient structural strength to facilitate ensuring the connection strength between the upper A-pillar reinforcement plate 11 and the upper B-pillar reinforcement plate 21, and in particular to facilitate ensuring that the welds of the upper A-pillar reinforcement plate 11 and the upper B-pillar reinforcement plate 21 do not tear in a collision.
[0059] Considering the collision requirements and occupant protection requirements of the lower A-pillar area, in this embodiment, as a preferred implementation form, as shown in Figure 3 and Figure 5 , the lower A-pillar reinforcement plate 12 is provided with a second patch plate 50, and the second patch plate 50 is arranged close to the upper A-pillar reinforcement plate 11. In this way, the intrusion amount of the driver's and front passenger's leg areas during a collision can be reduced, and the driver's and front passenger's leg protection requirements can be met.
[0060] Furthermore, as a preferred implementation form, the thickness t10 of the second patch plate 50 and the thickness t2 of the lower A-pillar reinforcement plate 12 satisfy t10 < t2, so as to achieve lightweight design of the A-pillar area while meeting the structural reinforcement requirements. Specifically, the second patch plate 50 can also be made of a hot-formed steel plate with a tensile strength of 1200 MPa-2000 MPa, and for example, can be specifically made of a hot-formed steel plate with a tensile strength of 1500 MPa, so as to ensure its reinforcement effect on the upper area of the lower A-pillar reinforcement plate 12.
[0061] It is worth mentioning that, in this embodiment, the lower A-pillar reinforcement plate 12 is a main stress area during a collision, and needs to be ensured not to deform and bend during a collision. In combination with the overall lightweight requirement of the structure, the thickness t2 of the lower A-pillar reinforcement plate 12 can be preferably set to be between 1.6 mm-2.5 mm, and for example, can be specifically set to be 1.6 mm. The second patch plate 50 mainly serves to reduce the intrusion amount of the lower A-pillar area during a collision, and to protect the leg area of the occupant, so the thickness t10 of the second patch plate 50 can be preferably set to be between 1.0 mm-2.5 mm, and for example, can be specifically set to be 1.0 mm.
[0062] The threshold beam reinforcing plate 13 is the main force area when not colliding, needs to absorb a certain amount of impact force, at the same time, the force is transmitted to the A-pillar area, seat front beam area, C-pillar area, seat rear beam area, to protect the passenger cabin space, and the light weight is considered, the thickness t3 of the plate can be preferably set between 1.4mm-2.5mm, and for example, can be specifically set to 1.4mm. The A-pillar upper reinforcing plate 11 is the main force area in the frontal and offset collision, needs to ensure that it cannot be deformed and folded during the collision, so the thickness t1 of the A-pillar upper reinforcing plate 11 can be preferably set to 1.7mm-2.5mm to ensure the strength, and for example, can be specifically set to 1.7mm. The first patch plate 40 is to ensure that the weld between the A-pillar upper reinforcing plate 11 and the B-pillar upper reinforcing plate 21 does not tear during the collision, and is the main force area, so the thickness t9 of the first patch plate 40 can be preferably set between 2.0mm-2.5mm, and for example, can be specifically set to 2.0mm.
[0063] The B-pillar upper reinforcing plate 21 is the main force area in side collision and roof pressure, needs to ensure that it cannot be deformed and folded during the collision, to avoid breaking and impacting the passengers, so the thickness t4 of the B-pillar upper reinforcing plate 21 can be preferably set to 1.7mm-2.5mm, that is, the B-pillar upper reinforcing plate 21 and the A-pillar upper reinforcing plate 11 are preferably designed as equal thickness, which not only can ensure that the front part of the vehicle body side structure has good structural strength, but also can improve the smoothness of the collision force transmission, and the thickness t9 of the first patch plate 40 is greater than the thickness t1 of the A-pillar upper reinforcing plate 11 and the thickness t4 of the B-pillar upper reinforcing plate 21, and the first patch plate 40 with larger thickness can also be used to improve the stability and connection strength of the weld between the B-pillar upper reinforcing plate 21 and the A-pillar upper reinforcing plate 11. The B-pillar lower reinforcing plate 22 is set as a collapse area, fully absorbs the collision energy, reduces the upper intrusion amount, makes the survival space of the passengers more abundant, at the same time, the collision force is transmitted to the seat beam area, and the light weight is considered, the thickness t5 of the plate can be preferably set between 1.4mm-2.5mm, and for example, can be specifically set to 1.4mm, that is, the B-pillar lower reinforcing plate 22 can be preferably designed as equal thickness with the threshold beam reinforcing plate 13, which is beneficial to improve the smoothness of the force transmission between the two, and is also more beneficial to realize the collapse of the B-pillar lower reinforcing plate 22 area.
[0064] Furthermore, the upper beam rear extension plate 31 is a main force bearing area in non-collision, used for supporting the roof structure, ensuring that the roof structure is not deformed when the vehicle rolls or heavy objects press the roof, thereby protecting the safety of the rear passenger compartment, while taking into account the light weight consideration, the thickness t6 of the plate can be preferably set between 1.2mm-2.5mm, and for example can be specifically set to 1.2mm. The C-pillar reinforcement plate 32 is also a main force bearing area in non-collision, used for supporting the C-pillar requirement, also used for absorbing the impact force brought by rear-end and rear collision and transmitting the force, protecting the safety of the rear passenger compartment, the thickness t7 of the plate can be preferably set between 1.0mm-2.5mm, and for example can be specifically set to 1.0mm. The rocker beam rear extension plate 33 is set as a collapse area, used for absorbing the force and transmitting the force, protecting the passenger living space, taking into account the light weight consideration, the thickness t8 of the plate can be preferably set between 1.2mm-2.5mm, and for example can be specifically set to 1.2mm, that is, the thickness of the upper beam rear extension plate 31 and the rocker beam rear extension plate 33 can be designed, so as to facilitate the transmission of the collision force to the C-pillar reinforcement plate 32. Here, compared with the traditional structure design, the C-pillar part adopts a three-section design, which not only improves the material utilization rate, ensures the overall strength of the vehicle body and absorbs most of the impact force, but also takes into account the light weight.
[0065] In addition, in the embodiment, as shown in Figure 2 as a preferred implementation form, the lower A-pillar reinforcement plate 12 includes a main body section 121 arranged in the up-down direction of the whole vehicle, and a rocker connecting section 122 located below the main body section 121. The upper A-pillar reinforcement plate 11 includes a lower connecting section 111, an intermediate section 112 and an upper connecting section 113 connected in sequence from bottom to top. The sum L1 of the lengths of the intermediate section 112, the lower connecting section 111 and the upper connecting section 113, and the sum L2 of the lengths of the main body section 121 and the rocker connecting section 122 satisfy: L1:L2=6:4.5 ~ 6:3.5.
[0066] In this way, not only the structural strength requirement of the A-pillar area and the overall height design requirement of the vehicle can be met, but also the material utilization rate can be improved. Specifically, the sum L1 of the lengths of the intermediate section 112, the lower connecting section 111 and the upper connecting section 113, and the sum L2 of the lengths of the main body section 121 and the rocker connecting section 122 can specifically satisfy: L1:L2=3:2.
[0067] In this embodiment, as a preferred implementation form, the upper B-pillar reinforcing plate 21 includes a first transverse section 211 arranged along the front-rear direction of the whole vehicle, and a first longitudinal section 212 arranged along the up-down direction of the whole vehicle. The lower B-pillar reinforcing plate 22 includes a second transverse section 221 arranged along the front-rear direction of the whole vehicle, and a second longitudinal section 222 arranged along the up-down direction of the whole vehicle. The rear threshold beam extension plate 33 includes a third transverse section 331 arranged along the front-rear direction of the whole vehicle. The first longitudinal section 212 and the second longitudinal section 222 are connected, and the length L3 of the first longitudinal section 212 and the length L4 of the second longitudinal section 222 satisfy L3:L4=6:3~6:2, so as to improve the material utilization rate while meeting the structural strength requirement of the B-pillar region and the height design requirement of the whole vehicle.
[0068] Meanwhile, as a preferred implementation form, in this embodiment, the length L5 of the threshold beam reinforcing plate 13, the length L6 of the second transverse section 221, and the length L7 of the third transverse section 331 satisfy L5:L6:L7=3:4.5:3~3:3.5:2, so as to improve the material utilization rate while meeting the structural strength and length requirement of the vehicle body. In specific implementation, the length L3 of the first longitudinal section 212 and the length L4 of the second longitudinal section 222 can specifically satisfy L3:L4=6:2.5. The length L5 of the threshold beam reinforcing plate 13, the length L6 of the second transverse section 221, and the length L7 of the third transverse section 331 can specifically satisfy L5:L6:L7=3:4:2.5.
[0069] Also, in this embodiment, as a preferred implementation form, as shown in Figure 2 the rear threshold beam extension plate 33 further includes a first inclined section 332 connected with the third transverse section 331, and the first inclined section 332 is connected with the lower end of the C-pillar reinforcing plate 32. The rear upper side beam extension plate 31 includes a fourth transverse section 311 arranged along the front-rear direction of the whole vehicle, and a second inclined section 312 connected with the fourth transverse section 311, and the second inclined section 312 is connected with the upper end of the C-pillar reinforcing plate 32. The length sum L8 of the fourth transverse section 311 and the second inclined section 312, the length L9 of the C-pillar reinforcing plate 32, and the length sum L10 of the third transverse section 331 and the first inclined section 332 satisfy L8:L9:L10=3:5.5:3~3:4.5:2, so as to meet the structural strength requirement and height design requirement of the C-pillar region, and also facilitate the improvement of the material utilization rate.
[0070] That is, based on the length proportion design of each plate, not only the structural strength requirement and the space design requirement of the whole vehicle body side structure can be met, but also the material utilization rate can be improved.
[0071] It is still worth mentioning that in the embodiment, the lower connecting section 111 is connected with the main body section 121, the threshold connecting section 122 is connected with the second transverse section 221 through the threshold beam reinforcing plate 13, the second longitudinal section 222 is connected with the first longitudinal section 212, and the first transverse section 211 is connected with the upper connecting section 113, so that the front door ring is formed among the A-pillar upper section reinforcing plate 11, the A-pillar lower section reinforcing plate 12, the threshold beam reinforcing plate 13, the B-pillar upper section reinforcing plate 21 and the B-pillar lower section reinforcing plate 22. The first transverse section 211 is connected with the C-pillar reinforcing plate 32 through the fourth transverse section 311 and the second inclined section 312, and the second transverse section 221 is connected with the C-pillar reinforcing plate 32 through the third transverse section 331 and the first inclined section 332, so that the rear door ring is formed among the B-pillar upper section reinforcing plate 21, the B-pillar lower section reinforcing plate 22, the upper side beam rear extension plate 31, the C-pillar reinforcing plate 32 and the threshold beam rear extension plate 33. As shown in Figs. 4 and 5, the first patch plate 40 has a first connecting section connected with the intermediate section 112, a second connecting section connected with the upper connecting section 113 and the first transverse section 211, and a curved connecting section connected between the first connecting section and the second connecting section, and the curved connecting section matches the bending degree between the upper connecting section 113 and the intermediate section 112, so as to ensure that the first patch plate 40 has a better structural reinforcing effect. Figure 3 and Figure 4 As shown in Figs. 4 and 5, the first patch plate 40 has a first connecting section connected with the intermediate section 112, a second connecting section connected with the upper connecting section 113 and the first transverse section 211, and a curved connecting section connected between the first connecting section and the second connecting section, and the curved connecting section matches the bending degree between the upper connecting section 113 and the intermediate section 112, so as to ensure that the first patch plate 40 has a better structural reinforcing effect.
[0072] Compared with the traditional spot welding lap joint structure, the vehicle body side structure of the embodiment can reduce the amount of material used, so that the overall vehicle body can be reduced by 15%-20%. At the same time, through the integrated design of the double-door ring body, the multiple plate parts are integrated into one, and multiple sets of molds and clamps are integrated into one set, so that the overall tooling cost can be reduced by 10%-20%. Furthermore, the vehicle body side structure of the embodiment is integrally blanked by tailor-welding, which has high material utilization rate, is beneficial to improve the production rhythm, reduces the stamping, welding and other processes, and reduces the processing cost, so that the overall product cost can be reduced by 5%-15%. In addition, the double-door ring body integrated with multiple plate parts has improved product precision, shortened development cycle, stronger product strength, and improved safety performance due to the overall structure of the vehicle body side structure and continuous stress transmission.
[0073] In the embodiment, the complex tailor-welded lap joint structure is cancelled by designing the laser tailor-welded double-door ring body with unequal plate thickness, the material waste is avoided, the material and plate thickness of each part can be selected according to the collision strength requirement, the material selection is optimized, the material performance waste is avoided, and the final body is formed by laser tailor-welding and stamping.
[0074] Embodiment two
[0075] The vehicle of the embodiment has the vehicle body side structure of the embodiment one arranged in the vehicle body, and has both light weight and better crash performance, and is beneficial to cost reduction, thereby improving the overall vehicle quality and market product power.
[0076] The vehicle of the embodiment has the vehicle body side structure of the embodiment one arranged in the vehicle body, and has both light weight and better crash performance, and is beneficial to cost reduction, thereby improving the overall vehicle quality and market product power.
[0077] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A vehicle body side structure characterized by comprising a double door ring body formed by press forming a plurality of panel members spliced together; the double door ring body comprising an A-pillar assembly (10), a B-pillar assembly (20), and a C-pillar assembly (30) connected in this order; the A-pillar assembly (10) and the B-pillar assembly (20) forming a front door ring, and the B-pillar assembly (20) and the C-pillar assembly (30) forming a rear door ring; the A-pillar assembly (10) having an A-pillar upper section reinforcement panel (11) therein, the B-pillar assembly (20) having a B-pillar upper section reinforcement panel (21) therein, the top end of the A-pillar upper section reinforcement panel (11) being connected to the B-pillar upper section reinforcement panel (21), and a first patch panel (40) being provided between the A-pillar upper section reinforcement panel (11) and the B-pillar upper section reinforcement panel (21).
2. The vehicle body side structure according to claim 1, characterized in that: the A-pillar assembly (10) further has an A-pillar lower section reinforcement panel (12) connected to the A-pillar upper section reinforcement panel (11), and a rocker reinforcement panel (13) connected to the A-pillar lower section reinforcement panel (12); the B-pillar assembly (20) further has a B-pillar lower section reinforcement panel (22) connected to the B-pillar upper section reinforcement panel (21), the B-pillar lower section reinforcement panel (22) being connected to the rocker reinforcement panel (13); and the C-pillar assembly (30) has an upper side rail rear extension panel (31), a C-pillar reinforcement panel (32), and a rocker rear extension panel (33) connected in this order, the upper side rail rear extension panel (31) being connected to the B-pillar upper section reinforcement panel (21), and the rocker rear extension panel (33) being connected to the B-pillar lower section reinforcement panel (22).
3. The vehicle body side structure according to claim 2, characterized in that: the thickness t1 of the A-pillar upper section reinforcement panel (11), the thickness t2 of the A-pillar lower section reinforcement panel (12), and the thickness t3 of the rocker reinforcement panel (13) satisfy t3 < t2 < t1; and / or the thickness t4 of the B-pillar upper section reinforcement panel (21) and the thickness t5 of the B-pillar lower section reinforcement panel (22) satisfy t5 < t4.
4. The vehicle body side structure according to claim 2, characterized in that: the thickness t6 of the upper side rail rear extension panel (31), the thickness t7 of the C-pillar reinforcement panel (32), and the thickness t4 of the B-pillar upper section reinforcement panel (21) satisfy t7 < t6 < t4; and / or the thickness t7 of the C-pillar reinforcement panel (32), the thickness t8 of the rocker rear extension panel (33), and the thickness t5 of the B-pillar lower section reinforcement panel (22) satisfy t7 < t8 < t5.
5. The vehicle body side structure according to claim 2, characterized in that: the thickness t9 of the first patch panel (40) and the thickness t1 of the A-pillar upper section reinforcement panel (11) satisfy t1 < t9, and the thickness t9 of the first patch panel (40) and the thickness t4 of the B-pillar upper section reinforcement panel (21) satisfy t4 < t9; and / or the thickness t9 of the first patch panel (40) and the thickness t5 of the B-pillar lower section reinforcement panel (22) satisfy t5 < t9. The A-pillar lower section reinforcing plate (12) is provided with a second patch plate (50) arranged close to the A-pillar upper section reinforcing plate (11).
6. The vehicle body side structure according to claim 2, wherein: The A-pillar lower section reinforcing plate (12) comprises a main section (121) arranged in the up-down direction of the vehicle, and a rocker connecting section (122) arranged below the main section (121); The A-pillar upper section reinforcing plate (11) comprises a lower connecting section (111), an intermediate section (112), and an upper connecting section (113) connected in sequence from bottom to top; The length sum L1 of the intermediate section (112), the lower connecting section (111), and the upper connecting section (113), and the length sum L2 of the main section (121) and the rocker connecting section (122) satisfy: L1:L2=6:4.5~6:3.
5.
7. The vehicle body side structure according to claim 2, wherein: The B-pillar upper section reinforcing plate (21) comprises a first transverse section (211) arranged in the front-rear direction of the vehicle, and a first longitudinal section (212) arranged in the up-down direction of the vehicle; The B-pillar lower section reinforcing plate (22) comprises a second transverse section (221) arranged in the front-rear direction of the vehicle, and a second longitudinal section (222) arranged in the up-down direction of the vehicle; The rocker beam rear extension plate (33) comprises a third transverse section (331) arranged in the front-rear direction of the vehicle, and the first longitudinal section (212) and the second longitudinal section (222) are connected; Wherein, the length L3 of the first longitudinal section (212) and the length L4 of the second longitudinal section (222) satisfy: L3:L4=6:3~6:2, and / or, the length L5 of the rocker beam reinforcing plate (13), the length L6 of the second transverse section (221), and the length L7 of the third transverse section (331) satisfy: L5:L6:L7=3:4.5:3~3:3.5:
2.
8. The vehicle body side structure according to claim 7, wherein: The rocker beam rear extension plate (33) further comprises a first inclined section (332) connected to the third transverse section (331), and the first inclined section (332) is connected to the lower end of the C-pillar reinforcing plate (32); The upper side beam rear extension plate (31) comprises a fourth transverse section (311) arranged in the front-rear direction of the vehicle, and a second inclined section (312) connected to the fourth transverse section (311), and the second inclined section (312) is connected to the upper end of the C-pillar reinforcing plate (32); The length sum L8 of the fourth transverse section (311) and the second inclined section (312), the length L9 of the C-pillar reinforcing plate (32), and the length sum L10 of the third transverse section (331) and the first inclined section (332) satisfy: L8:L9:L10=3:5.5:3~3:4.5:
2.
9. The vehicle body side structure according to any one of claims 2 to 8, wherein: The B-column lower section reinforcing plate (22) and the rocker beam rear extension plate (33) are each made of a hot-formed steel sheet having a tensile strength of 370 MPa to 800 MPa; and / or, The A-column upper section reinforcing plate (11), the A-column lower section reinforcing plate (12), the rocker beam reinforcing plate (13), the B-column upper section reinforcing plate (21), the upper side beam rear extension plate (31), the C-column reinforcing plate (32), and the first patch plate (40) are each made of a hot-formed steel sheet having a tensile strength of 1200 MPa to 2000 MPa.
10. A vehicle characterized by comprising: The vehicle body of the vehicle is provided with the vehicle body side structure according to any one of claims 1 to 9.