Vehicle B column, vehicle body side wall structure and vehicle

Abstract

The utility model discloses a vehicle B pillar, a vehicle body side wall structure and a vehicle, the vehicle B pillar comprises a body, and the body is provided with a first reinforcing area, a second reinforcing area and a third reinforcing area which are sequentially arranged at intervals in the first direction. The body comprises a first outer layer plate, a second outer layer plate and an inner layer fiber plate. The inner-layer fiber board is clamped between the first outer-layer board and the second outer-layer board, and the inner-layer fiber board, the first outer-layer board and the second outer-layer board all extend in the first direction. At least one of the first outer-layer plate, the second outer-layer plate and the inner-layer fiber plate is provided with a first reinforcing area, a second reinforcing area and a third reinforcing area which are sequentially arranged at intervals in the first direction, the first reinforcing area can be connected with a top frame upper cross beam of the vehicle body side wall structure, and the third reinforcing area can be connected with a doorsill beam of the vehicle body side wall structure. Therefore, the overall strength of the vehicle B column is enhanced, and the side collision safety performance of the vehicle is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a vehicle B-pillar, a vehicle side structure and a vehicle. Background Art

[0002] The B-pillar is the main load-bearing component of the car. Like the A-pillar, C-pillar and D-pillar, it is an important component that supports and stabilizes the entire car body. The B-pillar is mainly used to support the front door and the rear door. When the car is hit from the side, the energy of the collision directly acts on the B-pillar. If the B-pillar is not strong enough, it will deform or break during the collision, and the external collision object will directly invade the passenger compartment, posing a threat to the safety of the people inside the car. Therefore, the strength of the B-pillar is an important indicator for testing the safety performance of the car. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a vehicle B-pillar, a vehicle body side enclosure structure and a vehicle, which strengthens the overall strength of the vehicle B-pillar and effectively improves the vehicle side collision safety performance.

[0004] The vehicle B-pillar according to the first aspect of the present invention comprises a body extending along a first direction and provided with a first reinforcement area, a second reinforcement area and a third reinforcement area arranged in sequence along the first direction.

[0005] The first reinforcement area can be connected to the top frame upper cross beam of the vehicle body side structure, and the third reinforcement area can be connected to the sill beam of the vehicle body side structure.

[0006] In this embodiment, the vehicle B-pillar is formed by sequentially combining a first outer layer plate, an inner fiber plate, and a second outer layer plate, thereby strengthening the overall strength of the vehicle B-pillar, effectively improving the vehicle side collision safety performance, and reducing the mass of the vehicle B-pillar; by increasing the thickness of the first reinforced area, the second reinforced area, and the third reinforced area of ​​the vehicle B-pillar, the first reinforced area is prevented from collapsing or partially bending due to axial pressure; the second reinforced area is prevented from bending due to side collision, and the intrusion amount of the second reinforced area is suppressed; the third reinforced area is prevented from being subjected to Y-direction extrusion, thereby further improving the overall strength of the vehicle B-pillar and further improving the vehicle side collision safety performance.

[0007] According to some embodiments of the present invention, the body includes a first outer layer board, a second outer layer board and an inner fiberboard.

[0008] The inner fiberboard is sandwiched between the first outer board and the second outer board. At least one of the first outer board, the second outer board and the inner fiberboard is provided with the first reinforcement area, the second reinforcement area and the third reinforcement area which are sequentially arranged at intervals along the first direction.

[0009] According to some embodiments of the present invention, the inner fiberboard is provided with the first reinforcement area, the second reinforcement area, and the third reinforcement area.

[0010] According to some embodiments of the utility model, the second reinforcement area and / or the third reinforcement area corresponding to the inner fiberboard is stacked by a first bidirectional fiber fabric, a first unidirectional fiber fabric, a second unidirectional fiber fabric, a third unidirectional fiber fabric, and a second bidirectional fiber fabric.

[0011] According to some embodiments of the present invention, the first reinforcement area corresponding to the inner fiberboard is formed by stacking the first bidirectional fiber woven fabric, the first unidirectional fiber woven fabric, the second unidirectional fiber woven fabric, and the third unidirectional fiber woven fabric.

[0012] According to some embodiments of the present invention, the laying angles of the first unidirectional fiber fabric, the second unidirectional fiber fabric, and the third unidirectional fiber fabric in the first reinforcement area and / or the second reinforcement area are 0°, 90°, and 0°, respectively.

[0013] According to some embodiments of the present invention, the laying angles of the first unidirectional fiber fabric, the second unidirectional fiber fabric, and the third unidirectional fiber fabric in the third reinforcement area are 0°, 90°, and 0°, respectively.

[0014] According to some embodiments of the present invention, the fiber orientation of the first bidirectional fiber woven fabric and the second bidirectional fiber woven fabric is 0 / 90° or -45° / 45°.

[0015] According to some embodiments of the present invention, there is a distance d1 between the first reinforcement area and the second reinforcement area, 130mm≤d1≤190mm, and there is a distance d2 between the second reinforcement area and the third reinforcement area, 70mm≤d2≤130mm.

[0016] According to some embodiments of the present invention, the size of the first reinforcement area in the first direction is L1, 180mm≤L1≤230mm; the size of the second reinforcement area in the first direction is L2, 190mm≤L2≤240mm; the size of the third reinforcement area in the first direction is L3, 310mm≤L3≤360mm.

[0017] The vehicle body side structure according to the embodiment of the second aspect of the utility model includes the vehicle B-pillar in the second aspect.

[0018] According to some embodiments of the present invention, a B-pillar support is further included, wherein the B-pillar support is connected to the vehicle B-pillar and the rocker beam.

[0019] A vehicle according to an embodiment of the second aspect of the utility model includes the vehicle body side structure in the second aspect.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0022] Figure 1 is a schematic structural diagram of a vehicle B-pillar according to an embodiment of the utility model;

[0023] Figure 2 It is a schematic diagram of a first outer layer board, an inner fiberboard, and a second outer layer board according to an embodiment of the utility model;

[0024] Figure 3 is a schematic diagram of the arrangement of the first, second and third reinforcement areas of the B-pillar of a vehicle according to an embodiment of the utility model;

[0025] Figure 4 It is a structural schematic diagram of a vehicle body side enclosure structure according to an embodiment of the utility model;

[0026] Figure 5 It is a finite element force analysis diagram of a vehicle B-pillar according to an embodiment of the utility model;

[0027] Figure 6 It is a three-point bending performance comparison diagram according to an embodiment of the utility model;

[0028] Figure 7 It is a comparison diagram of drop weight impact performance according to an embodiment of the utility model;

[0029] Figure 8 This is a comparison diagram of the extrusion performance of the third reinforced zone according to an embodiment of the utility model;

[0030] Fig. 9 This is a comparison diagram of the axial extrusion performance of the first reinforcement zone according to an embodiment of the utility model;

[0031] Reference numerals:

[0032] Vehicle B-pillar 10, first outer layer plate 11, inner fiber plate 12, second outer layer plate 13;

[0033] A first reinforcement area 101, a second reinforcement area 102, and a third reinforcement area 103;

[0034] The vehicle body side structure 20 , the top frame upper cross beam 21 , the B-pillar support 22 , and the door sill beam 23 . DETAILED DESCRIPTION

[0035] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0036] The disclosure below provides many different embodiments or examples for realizing different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described below. Of course, they are merely examples, and the purpose is not to limit the utility model. In addition, the utility model can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the utility model provides various specific examples of processes and materials, but those of ordinary skill in the art can be aware of the applicability of other processes and / or the use of other materials.

[0037] like Figure 1-Figure 9 As shown, a vehicle B-pillar 10 according to an embodiment of the first aspect of the utility model comprises: a body extending along a first direction and provided with a first reinforcement area 101, a second reinforcement area 102 and a third reinforcement area 103 arranged in sequence along the first direction C.

[0038] The main body includes a first outer layer board 11 , a second outer layer board 13 and an inner fiber board 12 .

[0039] The inner fiberboard 12 is sandwiched between the first outer board 11 and the second outer board 13, and the inner fiberboard 12, the first outer board 11, and the second outer board 13 all extend along the first direction C. A first reinforcement area 101, a second reinforcement area 102, and a third reinforcement area 103 arranged in sequence along the first direction C are provided on at least one of the first outer board 11, the second outer board 13, and the inner fiberboard 12, the first reinforcement area 101 is connected to the top frame upper cross beam 21 of the vehicle body side wall structure 20, and the third reinforcement area 103 is connected to the door sill beam 23 of the vehicle body side wall structure 20.

[0040] It should be noted that when the vehicle B-pillar 10 is applied to the vehicle body side structure 20, the first direction C is the vehicle body height direction, that is, corresponds to the vertical direction. Of course, according to the design of the vehicle body side structure 20, when the B-pillar is slightly angled with the vertical direction, the first direction C will also change slightly accordingly.

[0041] In some embodiments, the first outer layer plate 11, the inner fiber plate 12, and the second outer layer plate 13 have the same outer contour. The first outer layer plate 11 and the inner fiber plate 12 are bonded by structural adhesive, and the second outer layer plate 13 and the inner fiber plate 12 are bonded by structural adhesive. The first outer layer plate 11 and the second outer layer plate 13 are made of the same material, and metal materials can be selected, such as carbon steel outer layer plates, aluminum alloy outer layer plates, magnesium alloy outer layer plates, etc. With such a configuration, the external first outer layer plate 11 and the second outer layer plate 13 have good yield strength and tensile strength, which can improve the side collision safety performance of the whole vehicle, and at the same time, the production cost of the first outer layer plate 11 and the second outer layer plate 13 is low. The inner fiber plate 12 can be one of a carbon fiber plate, a basalt fiber plate, a glass fiber plate, and an aramid fiber plate. As a lightweight material, the inner fiberboard 12 can reduce the mass of the vehicle B-pillar 10 and improve the strength and rigidity of the vehicle B-pillar 10 compared with carbon steel, aluminum alloy and magnesium alloy. In addition, it has the advantages of good corrosion resistance, fatigue resistance and impact resistance.

[0042] In addition, in practical applications, reference Figure 4 The vehicle B-pillar 10 is connected to the top frame upper cross beam 21 of the vehicle body side structure 20 by bolts. A B-pillar support 22 is provided between the vehicle B-pillar 10 and the sill beam 23 of the vehicle body side structure 20. The B-pillar support 22 is connected to the vehicle B-pillar 10 by bolts, and the B-pillar support 22 is connected to the sill beam 23 by bolts. The vehicle B-pillar 10 can simulate the stress environment of the vehicle B-pillar 10 under the vehicle body side structure 20 according to the finite element analysis software, and then obtain the finite element stress analysis diagram of the vehicle B-pillar 10, such as Figure 5 As shown. Figure 5 It can be known from FIG. 1 that the area where the vehicle B-pillar 10 is connected to the top frame upper cross beam 21 is subjected to axial pressure and collapses or partially bends, and this area is defined as the first reinforcement area 101, such as Figure 3 The area where the vehicle B-pillar 10 is connected to the B-pillar support member 22 is subjected to Y-direction extrusion, and the area is defined as the third reinforcement area 103, such as Figure 3 As shown; the middle part of the vehicle B-pillar 10 is bent due to side impact, and the intrusion amount in the middle part is the largest, and this area is defined as the second reinforcement area 102, such as Figure 3 The first reinforcement area 101, the second reinforcement area 102 and the third reinforcement area 103 are arranged in sequence along the first direction C.

[0043] In one embodiment, the thickness of the first reinforcement area 101, the second reinforcement area 102 and the third reinforcement area 103 corresponding to the first outer plate 11 can be increased; in another embodiment, the thickness of the first reinforcement area 101, the second reinforcement area 102 and the third reinforcement area 103 corresponding to the second outer plate 13 can be increased; in another embodiment, the thickness of the first reinforcement area 101, the second reinforcement area 102 and the third reinforcement area 103 corresponding to the inner fiber plate 12 can be increased, ..., this embodiment is not listed one by one. In this way, the thickness of the first reinforcement area 101, the second reinforcement area 102 and the third reinforcement area 103 of the vehicle B-pillar 10 can be increased, thereby preventing the first reinforcement area 101 from collapsing or partially bending due to axial pressure; preventing the second reinforcement area 102 from bending due to side collision, and suppressing the intrusion of the second reinforcement area 102; preventing the third reinforcement area 103 from being squeezed in the Y direction, thereby further improving the overall strength of the vehicle B-pillar 10 and further improving the vehicle side collision safety performance.

[0044] In summary, the vehicle B-pillar 10 is formed by sequentially combining the first outer layer plate 11, the inner fiber plate 12, and the second outer layer plate 13, thereby strengthening the overall strength of the vehicle B-pillar 10, effectively improving the vehicle side collision safety performance, and reducing the mass of the vehicle B-pillar 10; by increasing the thickness of the first reinforced area 101, the second reinforced area 102, and the third reinforced area 103 of the vehicle B-pillar 10, the first reinforced area 101 is prevented from collapsing or partially bending due to axial pressure; the second reinforced area 102 is prevented from bending due to side collision, and the intrusion amount of the second reinforced area 102 is suppressed; the third reinforced area 103 is prevented from being squeezed in the Y direction, thereby further improving the overall strength of the vehicle B-pillar 10 and the vehicle side collision safety performance.

[0045] Among them, the structural adhesive has high strength, can withstand large loads, and is resistant to aging, fatigue, corrosion, and stable in performance. It is suitable for bonding parts that withstand strong forces, and helps to improve the bonding between the first outer plate 11 and the inner fiber plate 12, and helps to improve the bonding between the second outer plate 13 and the inner fiber plate 12, and improves the strength of the entire vehicle B-pillar 10. Of course, it is understandable that in addition to structural adhesive bonding, fasteners can also be used for connection. The fasteners penetrate the first outer plate 11, the inner fiber plate 12, and the second outer plate 13. The fasteners can be rivets, bolts, etc.

[0046] In some embodiments of the present invention, the inner fiberboard 12 is provided with a first reinforcement area 101, a second reinforcement area 102, and a third reinforcement area 103. Such a configuration can further improve the overall strength of the vehicle B-pillar 10 while preventing the overall weight of the vehicle B-pillar 10 from increasing too much.

[0047] The following embodiment is described by taking the inner fiberboard 12 as an example with the first reinforcement area 101, the second reinforcement area 102, and the third reinforcement area 103:

[0048] In some embodiments of the present invention, Figure 3 As shown, there is a distance d1 between the first reinforced area 101 and the second reinforced area 102, 130 mm ≤ d1 ≤ 190 mm. There is a distance d2 between the second reinforced area 102 and the third reinforced area 103, 70 mm ≤ d2 ≤ 130 mm.

[0049] It should be noted that, in actual application, the side impact resistance of the vehicle B-pillar 10 is indirectly verified by three working conditions: three-point bending, drop hammer impact and extrusion of the third reinforcement area 103, and the roof static pressure resistance is verified by the axial extrusion of the first reinforcement area 101. The vehicle B-pillar 10 of this embodiment is compared and analyzed with the hot-formed steel B-pillar in terms of maximum resistance, maximum intrusion and weight: Figure 6 As shown, the maximum compressive strength of the vehicle B-pillar 10 under three-point bending is increased by 28%. Figure 7 As shown, the maximum penetration under the falling weight impact is reduced by 5%, as shown in Figure 8 As shown, the maximum compressive strength of the third reinforced area 103 of the vehicle B-pillar 10 under extrusion is comparable to that of a hot-formed steel B-pillar. Fig. 9 As shown, the maximum pressure resistance of the first reinforced area 101 under axial compression is equivalent to that of a hot-formed steel B-pillar. Therefore, the vehicle B-pillar 10 of this embodiment has a higher anti-collision performance.

[0050] The distance d1 between the first reinforcement area 101 and the second reinforcement area 102 can be 130 mm, 133 mm, 135 mm, 136 mm, 138 mm, 140 mm, 150 mm, 170 mm, 180 mm, or 190 mm, which are not listed one by one in this embodiment.

[0051] The distance d2 between the second reinforcement area 102 and the third reinforcement area 103 can be 70 mm, 73 mm, 75 mm, 76 mm, 80 mm, 100 mm, 110 mm, 120 mm, or 130 mm, which are not listed one by one in this embodiment.

[0052] Considering the production cost and anti-collision performance of the inner fiberboard 12, preferably, the distance d1 between the first reinforcement area 101 and the second reinforcement area 102 is 140 mm; the distance d2 between the second reinforcement area 102 and the third reinforcement area 103 is 80 mm.

[0053] The dimension of the first reinforced area 101 in the first direction C is L1, 180 mm ≤ L1 ≤ 230 mm. Preferably, the dimension of the first reinforced area 101 in the first direction C is 190 mm, which can take into account both the axial compression resistance and production cost of the first reinforced area 101.

[0054] The dimension of the second reinforced area 102 in the first direction C is L2, 190 mm ≤ L2 ≤ 240 mm. Preferably, the dimension of the second reinforced area 102 in the first direction C is 200 mm, which can take into account both the bending resistance and production cost of the second reinforced area 102.

[0055] The dimension of the third reinforcement area 103 in the first direction C is L3, 310 mm ≤ L3 ≤ 360 mm. Preferably, the dimension of the second reinforcement area 102 in the first direction C is 320 mm, which can take into account both the Y-direction compression resistance and the production cost.

[0056] In some embodiments of the present invention, the second reinforcement area 102 corresponding to the inner fiberboard 12 is formed by stacking a first bidirectional fiber fabric, a first unidirectional fiber fabric, a second unidirectional fiber fabric, a third unidirectional fiber fabric, and a second bidirectional fiber fabric.

[0057] It should be noted that according to Figure 5 It can be seen that the stress level of the second reinforced area 102 is greater than that of the first reinforced area 101. Considering that the second reinforced area 102 is bent due to the side impact, the intrusion amount of the second reinforced area 102, that is, the second reinforced area 102 is bent and deformed.

[0058] Based on this, the second reinforcement area 102 corresponding to the inner fiberboard 12 is selected to be stacked with 5 layers, which can be stacked in sequence of the first bidirectional carbon fiber fabric, the first unidirectional carbon fiber fabric, the second carbon unidirectional fiber fabric, the third carbon unidirectional fiber fabric, and the second bidirectional carbon fiber fabric. The carbon fiber orientation in the first unidirectional carbon fiber fabric is 0°, the carbon fiber orientation in the second unidirectional carbon fiber fabric is 90°, and the carbon fiber orientation in the third unidirectional carbon fiber fabric is 0°, wherein the carbon fiber orientation is 0°, that is, the length direction of the carbon fiber extends along the first direction C. In this way, the first and third unidirectional carbon fiber fabrics can enhance the bending resistance of the second reinforcement area 102 and inhibit the deformation of the second reinforcement area 102.

[0059] The fiber orientation of the first bidirectional fiber fabric and the second bidirectional fiber fabric is 0 / 90° or -45° / 45°. One of the first bidirectional fiber fabric and the second bidirectional fiber fabric is in contact with the first outer plate 11, and the other is in contact with the second outer plate 13. The forces acting on the first bidirectional fiber fabric and the second bidirectional fiber fabric at least include the connection force and the bending force of the first and second outer plates, and the first bidirectional fiber fabric and the second bidirectional fiber fabric can withstand the bidirectional force, and the force effect is better than that of the unidirectional carbon fiber fabric. At the same time, the material price of the bidirectional fiber fabric is higher than that of the unidirectional carbon fiber fabric. In order to take into account the production cost of the inner fiber board 12, the first and fifth layers are bidirectional fiber fabrics, and the second, third and fourth layers are unidirectional carbon fiber fabrics. On the one hand, the bending resistance of the second reinforcement area 102 is improved; on the other hand, the production cost of the inner fiber board 12 is reduced.

[0060] In some embodiments of the present invention, the third reinforcement area 103 corresponding to the inner fiberboard 12 is formed by stacking a first bidirectional fiber fabric, a first unidirectional fiber fabric, a second unidirectional fiber fabric, a third unidirectional fiber fabric, and a second bidirectional fiber fabric.

[0061] It should be noted that according to Figure 5 It can be seen that the stress level of the third reinforced area 103 is greater than that of the first reinforced area 101. Considering that the third reinforced area 103 is subjected to Y-direction extrusion.

[0062] Based on this, the third reinforcement area 103 corresponding to the inner fiberboard 12 is selected to be stacked by 5 layers, which can be a first bidirectional carbon fiber fabric, a first unidirectional carbon fiber fabric, a second carbon unidirectional fiber fabric, a third carbon unidirectional fiber fabric, and a second bidirectional carbon fiber fabric. The carbon fiber orientation in the first unidirectional carbon fiber fabric is 90°, the carbon fiber orientation in the second unidirectional carbon fiber fabric is 0°, and the carbon fiber orientation in the third unidirectional carbon fiber fabric is 90°. In this way, the first and third unidirectional carbon fiber fabrics can enhance the Y-direction compressive performance of the third reinforcement area 103 and inhibit the deformation of the third reinforcement area 103.

[0063] In some embodiments of the present invention, the first reinforcement area 101 corresponding to the inner fiberboard 12 is formed by stacking a first bidirectional fiber woven fabric, a first unidirectional fiber woven fabric, a second unidirectional fiber woven fabric, and a third unidirectional fiber woven fabric.

[0064] It should be noted that according to Figure 5 It can be seen that the stress level of the first reinforced area 101 is weaker than that of the second and third reinforced areas. Considering that the first reinforced area 101 is subjected to axial pressure and collapses or partially bends, the direction of the axial pressure is the same as the first direction C.

[0065] Based on this, the first reinforcement area 101 corresponding to the inner fiberboard 12 is selected to be stacked with 4 layers, which can be a first bidirectional carbon fiber fabric, a first unidirectional carbon fiber fabric, a second carbon unidirectional fiber fabric, and a third carbon unidirectional fiber fabric stacked in sequence. The carbon fiber orientation in the first unidirectional carbon fiber fabric is 0°, the carbon fiber orientation in the second unidirectional carbon fiber fabric is 90°, and the carbon fiber orientation in the third unidirectional carbon fiber fabric is 0°. In this way, the first and third unidirectional carbon fiber fabrics can enhance the axial compressive performance of the first reinforcement area 101 and inhibit the deformation of the first reinforcement area 101.

[0066] The area outside the first, second and third reinforcement areas of the inner fiberboard 12 is formed by stacking two layers, which may be a first bidirectional carbon fiber woven fabric and a second bidirectional carbon fiber woven fabric.

[0067] Taking the vehicle B-pillar 10 as a carbon fiber-high-strength steel composite B-pillar as an example, the manufacturing process of the carbon fiber-high-strength steel composite B-pillar is described.

[0068] The carbon fiber layer is pre-laid with woven cloth and unidirectional tape prepreg according to the layer design requirements, and the outer thermoforming layer is stamped. First, the metal blank layer is placed on the male mold and bonded, and then the composite material preform is placed on the metal layer and bonded, and finally heated and pressurized to cure it quickly and integrally. The specific steps are as follows:

[0069] ①Preparation of preform: Optimization analysis is performed based on demand to obtain the number of carbon fiber composite material layers and ply angles required for optimal performance of the composite B-pillar. Based on the results, carbon fiber prepreg is cut to prepare a preform.

[0070] ②Preheat the mold: spray the release agent on the heated male and female molds 2 to 3 times, clean the surface of the metal blank stamping parts, and remove dust and oil stains. Transfer the processed metal blank stamping parts to the female mold, let the metal blank stamping parts fit tightly to the mold, and preheat for about 30 to 60 seconds.

[0071] ③ Compression molding: Place the composite material preform on the mold, close the mold and evacuate for 30 to 200 seconds, pressurize the product by 1 to 5 MPa, and open the mold after keeping warm for 60 minutes.

[0072] ④ Demolding: Use an ejection device to eject the cured product to obtain a carbon fiber-high-strength steel composite B-pillar.

[0073] The vehicle body side structure 20 according to the embodiment of the second aspect of the present invention includes the vehicle B-pillar 10 in the first aspect.

[0074] In practical applications, such as Figure 4As shown, the vehicle body side structure 20 includes a vehicle B-pillar 10, a top frame upper cross beam 21, a B-pillar support 22, and a door sill beam 23. The vehicle B-pillar 10 is connected to the top frame upper cross beam 21 by bolts. A B-pillar support 22 is provided between the vehicle B-pillar 10 and the door sill beam 23, and the B-pillar support 22 is connected to the vehicle B-pillar 10 by bolts, and the B-pillar support 22 is connected to the door sill beam 23 by bolts. The setting of the B-pillar support 22, on the one hand, avoids excessive stress deformation between the vehicle B-pillar 10 and the door sill beam 23; on the other hand, the split design of the vehicle B-pillar 10 and the B-pillar support 22 reduces the processing difficulty of the vehicle B-pillar 10 and reduces the production cost of the vehicle B-pillar 10.

[0075] In addition, the vehicle body side structure 20 has the advantages of the vehicle B-pillar 10 , so it is not described in detail.

[0076] A vehicle according to an embodiment of the third aspect of the present invention includes the vehicle body side structure 20 in the second aspect.

[0077] The vehicle has the advantages of the vehicle body side structure 20, so it is not described in detail.

[0078] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0079] In the description of the present invention, "first feature" or "second feature" may include one or more of the features.

[0080] In the description of the present invention, "plurality" means two or more.

[0081] In the description of the present invention, a first feature being “above” or “below” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact but are in contact with each other via another feature therebetween.

[0082] In the description of the present invention, a first feature “above”, “over” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0083] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", "some examples", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0084] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A vehicle B-pillar (10), characterized in that: include: A body extending along a first direction; The main body is provided with a first reinforcement area (101), a second reinforcement area (102) and a third reinforcement area (103) which are arranged in sequence and spaced apart along the first direction; the first reinforcement area (101) can be connected to an upper cross beam (21) of a top frame of a vehicle body side enclosure structure (20); and the third reinforcement area (103) can be connected to a sill beam (23) of the vehicle body side enclosure structure (20).

2. The vehicle B-pillar (10) according to claim 1, characterized in that: The body comprises a first outer layer board (11), a second outer layer board (13) and an inner layer fiber board (12), wherein the inner layer fiber board (12) is sandwiched between the first outer layer board (11) and the second outer layer board (13). At least one of the first outer layer board (11), the second outer layer board (13) and the inner fiber board (12) is provided with the first reinforcement area (101), the second reinforcement area (102) and the third reinforcement area (103) which are arranged in sequence and spaced apart along the first direction.

3. The vehicle B-pillar (10) according to claim 2, characterized in that: The inner fiberboard (12) is provided with the first reinforcement area (101), the second reinforcement area (102), and the third reinforcement area (103).

4. The vehicle B-pillar (10) according to claim 3, characterized in that: The second reinforcement area and / or the third reinforcement area corresponding to the inner fiberboard (12) is formed by stacking a first bidirectional fiber woven fabric, a first unidirectional fiber woven fabric, a second unidirectional fiber woven fabric, a third unidirectional fiber woven fabric, and a second bidirectional fiber woven fabric.

5. The vehicle B-pillar (10) according to claim 4, characterized in that: The first reinforcement area (101) corresponding to the inner fiberboard (12) is formed by stacking the first bidirectional fiber woven fabric, the first unidirectional fiber woven fabric, the second unidirectional fiber woven fabric, and the third unidirectional fiber woven fabric.

6. The vehicle B-pillar (10) according to claim 4, characterized in that: The laying angles of the first unidirectional fiber fabric, the second unidirectional fiber fabric, and the third unidirectional fiber fabric in the first reinforcement area and / or the second reinforcement area are 0°, 90°, and 0°, respectively.

7. The vehicle B-pillar (10) according to claim 4, characterized in that: The laying angles of the first unidirectional fiber fabric, the second unidirectional fiber fabric and the third unidirectional fiber fabric of the third reinforcement area (103) are 0°, 90° and 0° respectively.

8. The vehicle B-pillar (10) according to claim 4, characterized in that: The fiber orientations of the first bidirectional fiber woven fabric and the second bidirectional fiber woven fabric are 0 / 90° or -45° / 45°.

9. The vehicle B-pillar (10) according to claim 1, characterized in that: There is a distance d1 between the first reinforcement area (101) and the second reinforcement area (102), 130mm≤d1≤190mm, and there is a distance d2 between the second reinforcement area (102) and the third reinforcement area (103), 70mm≤d2≤130mm.

10. The vehicle B-pillar (10) according to claim 9, characterized in that: The size of the first reinforced area (101) in the first direction is L1, 180mm≤L1≤230mm; the size of the second reinforced area (102) in the first direction is L2, 190mm≤L2≤240mm; the size of the third reinforced area (103) in the first direction is L3, 310mm≤L3≤360mm.

11. A vehicle body side structure (20), characterized in that: The vehicle comprises a B-pillar (10) according to any one of claims 1 to 10.

12. The vehicle body side structure (20) according to claim 11, characterized in that: It also includes a B-pillar support member (22), wherein the B-pillar support member (22) is connected to the vehicle B-pillar (10) and the rocker beam (23).

13. A vehicle, characterized in that: It comprises the vehicle body side structure (20) as claimed in claim 11 or 12.

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