Body structures and multi-purpose vehicles

Abstract

The present invention discloses a vehicle body structure and a multi-purpose vehicle, and relates to the technical field of multi-purpose vehicle body structures, wherein a vehicle body structure comprises: two front pillar door ring assemblies, a first sunroof reinforcement ring, and two slide rail assemblies, wherein the two front pillar door ring assemblies are spaced apart in the left-right direction and have a B-pillar assembly extending in the up-down direction; the first sunroof reinforcement ring is arranged between the two front pillar door ring assemblies; the two slide rail assemblies are spaced apart in the left-right direction and extend in the front-back direction, and the slide rail assembly is provided with a connecting portion at one end in the front-back direction; wherein the connecting portion is fixedly connected to the B-pillar assembly and the first sunroof reinforcement ring assembly, respectively. The technical solution provided by the present invention connects the first sunroof reinforcement ring and the B-pillar assembly respectively through the connecting portion, and when the B-pillar is hit from the side, the force can be diverted to the first sunroof reinforcement ring through the connecting portion, thereby reducing the force borne by the B-pillar assembly and improving the anti-collision capability of the B-pillar assembly.

Description

Technical Field

[0001] The present invention relates to the technical field of multi-purpose vehicle body structures, in particular to a body structure and a multi-purpose vehicle. Background Art

[0002] The safety performance of a vehicle is one of the important considerations for users when purchasing a vehicle.

[0003] Compared with traditional vehicles, MPVs have second-row doors that open by sliding, so a sliding door guide structure needs to be installed in the second row of the sliding rail assembly (between the B-pillar and the C-pillar). In order to facilitate part molding, the strength of the sliding rail assembly itself is relatively low. In addition, due to the arrangement of the sliding door guide rail and the sunroof, when the B-pillar is subjected to lateral force, the force is difficult to transmit to the sunroof reinforcement ring, causing the B-pillar to be subjected to a large external force that is difficult to transmit and evacuate. Therefore, the B-pillar is easily damaged, further affecting the collision performance of the vehicle body structure.

[0004] Therefore, the collision performance of MPV (multi-purpose vehicle) models on the market is generally poor. Summary of the Invention

[0005] The main purpose of the present invention is to provide a vehicle body structure and a multi-purpose vehicle, aiming to improve the anti-collision performance of the multi-purpose vehicle body structure.

[0006] To achieve the above-mentioned objectives, the vehicle body structure proposed in the present invention includes: two front pillar door ring assemblies, a first sunroof reinforcement ring and two slide rail assemblies, the two front pillar door ring assemblies are arranged at intervals along the left-right direction, and have a B-pillar assembly extending along the up-down direction; the first sunroof reinforcement ring is arranged between the two front pillar door ring assemblies; the two slide rail assemblies are arranged at intervals along the left-right direction and extend along the front-to-back direction, and the slide rail assembly is provided with a connecting portion at one end in the front-to-back direction; wherein, the connecting portion is fixedly connected to the B-pillar assembly and the first sunroof reinforcement ring assembly respectively.

[0007] In one embodiment, the first sunroof reinforcement ring has a first extension section extending in the left-right direction, the width of the first extension section in the front-to-back direction is smaller than the width of the connecting portion in the front-to-back direction, and the first extension section is installed within the width range of the connecting portion in the front-to-back direction and is fixedly connected to the connecting portion.

[0008] In one embodiment, the first extension section has a yield strength greater than or equal to 420 MPa, a tensile strength greater than or equal to 780 MPa, and a thickness greater than or equal to 1.4 mm in the vertical direction.

[0009] In one embodiment, the B-pillar assembly includes:

[0010] a B-pillar extending in the up-down direction, wherein a cross-sectional area of ​​the B-pillar taken by a section perpendicular to the up-down direction increases in a direction away from the connecting portion, and the B-pillar has a cavity extending in the up-down direction;

[0011] A plurality of reinforcement members are installed in the cavity and close to one end of the connecting portion.

[0012] In one embodiment, the B-pillar assembly has an upper section close to the connecting portion and a lower section away from the connecting portion, and the strength of the upper section is greater than that of the lower section.

[0013] In one embodiment, the vehicle body structure further includes a C-pillar assembly, the C-pillar assembly extending in the up-down direction and disposed opposite to the B-pillar assembly in the front-rear direction;

[0014] The slide rail assembly is arranged between the B-pillar assembly and the C-pillar assembly, and is fixedly connected to both of them.

[0015] In one embodiment, the slide rail assembly includes:

[0016] The upper slide rail upper plate and the upper slide rail reinforcement plate extend in the front-to-back direction and enclose to form a mounting groove for mounting the slide rail;

[0017] An upper slide rail reinforcement plate patch, fixedly connected to an end of the upper slide rail reinforcement plate away from the connecting portion, and used for fixed connection to the C-pillar assembly;

[0018] An upper slide rail inner plate, fixedly connected to the upper slide rail upper plate, the upper slide rail reinforcement plate, the first sunroof reinforcement ring, and the B-pillar assembly respectively;

[0019] Among them, the yield strength of the upper slide rail reinforcement plate and the upper slide rail reinforcement plate supplement plate is greater than or equal to 330MPa, the tensile strength is greater than or equal to 590MPa, the thickness of the upper slide rail reinforcement plate in the up and down directions is greater than or equal to 1.2mm, and the thickness of the upper slide rail reinforcement plate supplement plate in the up and down directions is greater than or equal to 2.0mm.

[0020] In one embodiment, the upper slide rail reinforcement plate and the upper slide rail reinforcement plate supplement plate partially overlap in the front-to-back direction, and the overlapping portions are glued and welded.

[0021] In one embodiment, the vehicle body structure further includes:

[0022] A second second window reinforcement ring is installed between the two slide rail assemblies, and the second second window reinforcement ring has a second extension section extending in the left-right direction;

[0023] The C-pillar assembly extends in the up-down direction and is fixedly connected to an end of the slide rail assembly away from the connecting portion, and the C-pillar assembly and the second extension section are correspondingly arranged in the front-to-back direction.

[0024] The present invention also proposes a multi-purpose vehicle, including the body structure described above, wherein the body structure includes: two front pillar door ring assemblies, a first sunroof reinforcement ring and two slide rail assemblies, the two front pillar door ring assemblies are arranged at intervals along the left-right direction, and have a B-pillar assembly extending along the up-down direction; the first sunroof reinforcement ring is arranged between the two front pillar door ring assemblies; the two slide rail assemblies are arranged at intervals along the left-right direction and extend along the front-to-back direction, and the slide rail assembly is provided with a connecting portion at one end in the front-to-back direction; wherein the connecting portion is fixedly connected to the B-pillar assembly and the first sunroof reinforcement ring assembly respectively.

[0025] The technical solution of the present invention connects the first skylight reinforcement ring and the B-pillar assembly respectively through a connecting part. When the B-pillar is subjected to a side impact, the force can be diverted to the first skylight reinforcement ring through the connecting part, thereby reducing the force borne by the B-pillar assembly and improving the anti-collision ability of the B-pillar assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0027] Figure 1 A structural schematic diagram of an embodiment of a vehicle body structure provided by the present invention;

[0028] Figure 2 for Figure 1 Schematic diagram of the partial structure of the mid-body structure;

[0029] Figure 3 for Figure 2 Exploded diagram of a partial vehicle body structure;

[0030] Figure 4 for Figure 1 Schematic diagram of the partial structure of the mid-body structure;

[0031] Figure 5 for Figure 4 A schematic structural diagram of a partial vehicle body structure in another perspective;

[0032] Figure 6 for Figure 1 Schematic diagram of the structure of the B-pillar assembly of the mid-body structure.

[0033] Description of Figure Numbers:

[0034] 100. Body structure; 1. Front pillar door ring assembly; 11. B-pillar assembly; 111. B-pillar; 112. Reinforcement; 2. First skylight reinforcement ring; 21. First extension section; 3. Slide rail assembly; 31. Connecting portion; 32. Upper slide rail upper plate; 33. Upper slide rail reinforcement plate; 34. Upper slide rail reinforcement plate patch; 35. Upper slide rail inner plate; 4. C-pillar assembly; 5. Second skylight reinforcement ring; 51. Second extension section.

[0035] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0037] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0038] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0039] Compared to traditional vehicles, MPVs require a sliding door rail assembly (between the B-pillar and C-pillar) for the second row of doors, as they open by sliding. This inherently reduces the strength of the rail assembly to facilitate part molding. Furthermore, due to the placement of the sliding door rail and sunroof, lateral forces acting on the B-pillar are difficult to transmit to the sunroof reinforcement ring. This results in significant external forces being applied to the B-pillar and difficult to dissipate, making it susceptible to damage and further impacting the crashworthiness of the vehicle body structure. Consequently, MPVs (multi-purpose vehicles) currently on the market generally exhibit poor crashworthiness.

[0040] The present invention provides a vehicle body structure.

[0041] See also Figure 1 (The front pillar door ring assembly 1 and the slide rail assembly 3 on the other side in the left and right directions are not shown in the figure). In one embodiment of the present invention, the vehicle body structure 100 includes: two front pillar door ring assemblies 1, a first sunroof reinforcement ring 2 and two slide rail assemblies 3. The two front pillar door ring assemblies 1 are spaced apart in the left and right directions and have a B-pillar assembly extending in the up and down directions; the first sunroof reinforcement ring 2 is arranged between the two front pillar door ring assemblies 1; the two slide rail assemblies 3 are spaced apart in the left and right directions and extend in the front and back directions, and the slide rail assembly 3 is provided with a connecting portion 31 at one end in the front and back directions; wherein the connecting portion 31 is fixedly connected to the B-pillar assembly 11 and the first sunroof reinforcement ring 2 assembly, respectively.

[0042] Compared to the prior art, the B-pillar assembly 11 and the first sunroof reinforcement ring 2 are also relatively fixedly connected, but they are connected by multiple connectors. When the B-pillar 111 is subjected to a large force, the force is transmitted between the multiple connectors. Due to the arrangement or structure of the connectors, the force cannot be effectively transmitted to the first sunroof reinforcement ring 2. In addition, the connectors may deform during the force transmission process due to their own structure or material. Therefore, the anti-collision capability of the B-pillar assembly 11 can be improved from the following aspects: 1. Reducing the force transmission path from the B-pillar assembly 11 to the first sunroof reinforcement ring 2; 2. Optimizing the force transmission path so that the external force can be effectively distributed to the first sunroof reinforcement ring 2; 3. Strengthening the structural strength of the first sunroof reinforcement ring 2 and the B-pillar assembly 11.

[0043] First, the technical solution of the present invention connects the front pillar door ring assembly 1 and the first sunroof reinforcement ring 2 respectively through the connection portion 31 of the slide rail assembly 3. In particular, the connection portion 31 is fixedly connected to the B-pillar assembly 11 of the front pillar door ring assembly 1. When the B-pillar 111 is hit from the side, the force can be diverted to the first sunroof reinforcement ring 2 through the connection portion 31, thereby reducing the force borne by the B-pillar assembly 11. When the strength of the B-pillar assembly 11 is constant, the anti-collision capability of the B-pillar assembly 11 can be improved. In addition, the B-pillar assembly 11 and the first sunroof reinforcement ring 2 are connected only by the connection portion 31, which shortens the force transmission path and makes it easier to distribute the external force to the first sunroof reinforcement ring 2.

[0044] Secondly, the force transmission path needs to be optimized. For the first skylight reinforcement ring 2, the portion extending in the front-to-back direction has a stronger ability to resist positive external force impact, and the portion extending in the left-to-right direction (the first extension section 21) has a stronger ability to resist lateral external force impact. The B-pillar assembly 11 needs to transmit external force to the first extension section 21. The optimal transmission path is: the B-pillar assembly 11 is directly connected to the first extension section 21, and the two are aligned in the front-to-back direction. Due to the sunroof installation position and appearance requirements, it is not possible to align the B-pillar assembly 11 and the first extension section 21 in the front-to-back direction. The greater the misalignment distance between the B-pillar assembly 11 and the first extension section 21 in the front-to-back direction, the greater the external force received by the connecting portion 31, and the smaller the external force received by the first extension section 21. As the slide rail assembly 3 itself extends in the front-to-back direction, its ability to bear lateral force is limited. To prevent the connecting portion 31 from being subjected to significant lateral forces that would prevent them from being effectively distributed to the first skylight reinforcement ring 2, the B-pillar assembly 11 and the first extension section 21 are positioned as close together in the fore-aft direction as possible. The fore-aft width of the first extension section 21 is smaller than the fore-aft width of the connecting portion 31. The first extension section 21 is installed within the fore-aft width range of the connecting portion 31 and is fixedly connected to the connecting portion 31. This arrangement ensures that the first extension section 21 is not misaligned with the connecting portion 31, preventing significant stress from being locally applied to one end of the first extension section 21. Furthermore, limiting the installation range of the first extension section 21 prevents excessive fore-aft misalignment between the B-pillar assembly 11 and the first extension section 21.

[0045] Furthermore, to enhance crashworthiness, the structural strength of the first roof reinforcement ring 2 and the B-pillar assembly 11 also needed to be strengthened. Specifically, the first extension section 21 had a yield strength of 420 MPa or greater, a tensile strength of 780 MPa or greater, and a vertical thickness of 1.4 mm or greater. This strength was ensured through careful material selection and thickness design.

[0046] The B-pillar assembly 11 includes a B-pillar 111 and a plurality of reinforcements 112. The B-pillar 111 extends in the vertical direction. Due to its shape and structural limitations, the B-pillar 111 gradually thickens from top to bottom (in the direction away from the connection portion 31). That is, the cross-sectional area of ​​the B-pillar 111, measured by a section perpendicular to the vertical direction, increases in the direction away from the connection portion 31. As a result, the strength of the portion of the B-pillar 111 near the connection portion 31 is lower than that of the portion away from the connection portion 31. To supplement the strength of the portion of the B-pillar 111 near the connection portion 31, the B-pillar 111 has a cavity extending in the vertical direction (to reduce the weight of the vehicle body); a plurality of reinforcements 112 are installed in the cavity at one end near the connection portion 31.

[0047] When subjected to a significant external impact, the B-pillar 111 may deform to absorb the external energy. To prevent the B-pillar 111 from deforming and invading the cab, posing a significant risk to the driver, the upper portion of the B-pillar 111 is maintained as much as possible while the lower portion deforms. This reduces the risk of fatal injuries, as the lower portion intrudes into the seat or legroom area of ​​the cab. Therefore, the B-pillar assembly 11 has an upper section near the connecting portion 31 and a lower section away from the connecting portion 31. After installing multiple reinforcements 112, the upper section is made stronger than the lower section, ensuring that the lower section is more easily deformed than the upper section.

[0048] The vehicle body structure 100 also includes a C-pillar assembly extending in the vertical direction and disposed opposite the B-pillar assembly 11 in the front-to-back direction. The slide rail assembly 3 is disposed between the B-pillar assembly 11 and the C-pillar assembly and is fixedly connected to both. The slide rail assembly 3 is used for mounting a slide rail and can transmit the force to the other when either the B-pillar assembly 11 or the C-pillar assembly is subjected to a forward impact.

[0049] The specific structure of the slide rail assembly 3 is as follows: the slide rail assembly 3 includes: an upper slide rail upper plate 32, an upper slide rail reinforcement plate 33, an upper slide rail reinforcement plate supplement plate 34 and an upper slide rail inner plate 35. The upper slide rail upper plate 32 and the upper slide rail reinforcement plate 33 extend in the front and rear directions respectively, enclosing to form a mounting groove for slide rail installation; the upper slide rail reinforcement plate supplement plate 34 is fixedly connected to the end of the upper slide rail reinforcement plate 33 away from the connecting portion 31, and is used to be fixedly connected to the C-pillar assembly; the upper slide rail inner plate 35 is respectively connected to the upper slide rail upper plate 32 and the upper slide rail reinforcement plate 33 , the first sunroof reinforcement ring 2, the B-pillar assembly 11 are fixedly connected; in the prior art, in order to form the upper slide rail reinforcement plate 33 and the upper slide rail reinforcement plate patch 34 into one piece, a soft steel with better plasticity is selected, and the corresponding strength is lower. In order to improve the strength of the slide rail assembly, the material requirements for the slide rail reinforcement plate and the upper slide rail reinforcement plate patch 34 are to have a yield strength greater than or equal to 330MPa and a tensile strength greater than or equal to 590MPa. However, this means that due to the material's own properties and structural requirements, the two components cannot be formed into one piece. Therefore, the two can only be manufactured separately. In order to ensure strength, the thickness of the upper slide rail reinforcement plate 33 in the vertical direction is greater than or equal to 1.2mm, and the thickness of the upper slide rail reinforcement plate patch 34 in the vertical direction is greater than or equal to 2.0mm, and then the two are fixedly connected.

[0050] In order to ensure the connection strength of the connection, the upper slide rail reinforcement plate 33 and the upper slide rail reinforcement plate patch 34 partially overlap in the front-to-back direction, and the overlapping parts are glued and welded.

[0051] The C-pillar assembly is also a part worthy of attention when the vehicle body is hit from the side. According to the above analysis of the force transmission path of the B-pillar 111, similarly, the C-pillar assembly needs to be aligned with and fixedly connected to the part of the second window reinforcement ring 5 extending in the left-right direction. Specifically, the vehicle body structure 100 also includes: a second window reinforcement ring 5 and a C-pillar assembly. The second window reinforcement ring 5 is installed between the two slide rail assemblies 3, and the second window reinforcement ring 5 has a second extension section 51 extending in the left-right direction; the C-pillar assembly extends in the up-down direction and is fixedly connected to the end of the slide rail assembly 3 away from the connection portion 31, and the C-pillar assembly and the second extension section 51 are correspondingly arranged in the front-to-back direction.

[0052] The present invention also proposes a multi-purpose vehicle, which includes a body structure 100. The specific structure of the body structure 100 refers to the above-mentioned embodiments. Since the multi-purpose vehicle adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described in detail here. The body structure 100 includes: two front pillar door ring assemblies 1, a first sunroof reinforcement ring 2 and two slide rail assemblies 3. The two front pillar door ring assemblies 1 are spaced apart in the left-right direction and have a B-pillar assembly 11 extending in the up-down direction; the first sunroof reinforcement ring 2 is arranged between the two front pillar door ring assemblies 1; the two slide rail assemblies 3 are spaced apart in the left-right direction and extend in the front-to-back direction. The slide rail assembly 3 is provided with a connecting portion 31 at one end in the front-to-back direction; wherein the connecting portion 31 is fixedly connected to the B-pillar assembly 11 and the first sunroof reinforcement ring 2 assembly respectively.

[0053] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformation made by utilizing the contents of the present invention's description and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A vehicle body structure for a multi-purpose vehicle, characterized in that: include: Two front pillar door ring assemblies are spaced apart in the left-right direction and have a B-pillar assembly extending in the up-down direction; a first sunroof reinforcement ring, disposed between the two front pillar door ring assemblies, the first sunroof reinforcement ring having a first extension section extending in the left-right direction; Two slide rail assemblies are spaced apart in the left-right direction and extend in the front-back direction, and a connecting portion is provided at one end of the slide rail assembly in the front-back direction; In which, the connecting portion is fixedly connected to the B-pillar assembly and the first sunroof reinforcement ring assembly respectively, the width of the first extension section in the front-to-back direction is smaller than the width of the connecting portion in the front-to-back direction, and the first extension section is installed within the width range of the connecting portion in the front-to-back direction and is fixedly connected to the connecting portion.

2. The vehicle body structure according to claim 1, wherein: For the first extension section, its yield strength is greater than or equal to 420 MPa, its tensile strength is greater than or equal to 780 MPa, and its thickness in the up and down directions is greater than or equal to 1.4 mm.

3. The vehicle body structure according to claim 1, wherein: The B-pillar assembly includes: a B-pillar extending in the up-down direction, wherein a cross-sectional area of ​​the B-pillar taken by a section perpendicular to the up-down direction increases in a direction away from the connecting portion, and the B-pillar has a cavity extending in the up-down direction; A plurality of reinforcement members are installed in the cavity and close to one end of the connecting portion.

4. The vehicle body structure according to claim 3, wherein: The B-pillar assembly includes an upper section close to the connecting portion and a lower section away from the connecting portion, wherein the strength of the upper section is greater than that of the lower section.

5. The vehicle body structure according to claim 1, wherein: The vehicle body structure further includes a C-pillar assembly, the C-pillar assembly extending in the up-down direction and arranged opposite to the B-pillar assembly in the front-rear direction; The slide rail assembly is arranged between the B-pillar assembly and the C-pillar assembly, and is fixedly connected to both of them.

6. The vehicle body structure according to claim 5, wherein: The rail assembly includes: The upper slide rail upper plate and the upper slide rail reinforcement plate extend in the front-to-back direction and enclose to form a mounting groove for mounting the slide rail; An upper slide rail reinforcement plate patch, fixedly connected to an end of the upper slide rail reinforcement plate away from the connecting portion, and used for fixed connection to the C-pillar assembly; An upper slide rail inner plate, fixedly connected to the upper slide rail upper plate, the upper slide rail reinforcement plate, the first sunroof reinforcement ring, and the B-pillar assembly respectively; Among them, the yield strength of the upper slide rail reinforcement plate and the upper slide rail reinforcement plate supplement plate is greater than or equal to 330MPa, the tensile strength is greater than or equal to 590MPa, the thickness of the upper slide rail reinforcement plate in the up and down directions is greater than or equal to 1.2mm, and the thickness of the upper slide rail reinforcement plate supplement plate in the up and down directions is greater than or equal to 2.0mm.

7. The vehicle body structure according to claim 6, wherein: The upper slide rail reinforcement plate and the upper slide rail reinforcement plate patch are partially overlapped in the front-to-back direction, and the overlapping parts are glued and welded.

8. The vehicle body structure according to claim 1, wherein: The vehicle body structure further includes: A second second window reinforcement ring is installed between the two slide rail assemblies, and the second second window reinforcement ring has a second extension section extending in the left-right direction; The C-pillar assembly extends in the up-down direction and is fixedly connected to an end of the slide rail assembly away from the connecting portion, and the C-pillar assembly and the second extension section are correspondingly arranged in the front-to-back direction.

9. A multi-purpose vehicle, characterized in that: It comprises the vehicle body structure according to any one of claims 1 to 8.

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