Vehicle B-pillar assembly and vehicle

Abstract

The present invention relates to a vehicle B-pillar assembly and a vehicle. The vehicle B-pillar assembly includes: a door sill; a B-pillar reinforcement and a B-pillar inner panel, disposed relative to each other on the door sill along the Y-direction of the vehicle body, the B-pillar reinforcement being fixedly connected to the B-pillar inner panel, and the lower portion of each being fixedly connected to the door sill; and a lower inner panel reinforcement, disposed between the B-pillar reinforcement and the B-pillar inner panel, the lower inner panel reinforcement being fixedly connected to the B-pillar inner panel and the door sill, respectively. By adding a lower inner panel reinforcement disposed between the B-pillar reinforcement and the lower inner panel, the present invention can effectively enhance the lower inner connection strength of the vehicle body B-pillar assembly, thereby preventing the problem of lower inner panel connection failure during a side collision, and thereby improving the side collision performance of the vehicle body B-pillar assembly.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile accessories, and in particular to a vehicle B-pillar assembly and a vehicle. Background Art

[0002] The B-pillar assembly is a key component of the vehicle's frame and a critical load-bearing member of the vehicle's structure. Side impacts and top pressures place high performance demands on the B-pillar assembly. Currently, to meet the trend toward lightweight vehicle bodies, steel-aluminum hybrid structures are widely used in vehicle body components. Traditional vehicle body structures and connection processes are no longer able to fully meet these performance requirements.

[0003] Related technology discloses a vehicle B-pillar assembly structure, including: a B-pillar reinforcement plate, which is a sheet metal component and includes: a reinforcement plate body, a first crossbeam, and a second crossbeam, the first crossbeam and the second crossbeam being respectively arranged at the two ends of the reinforcement plate body, and the reinforcement plate body being provided with a plurality of first mounting holes; a support plate, which is a carbon fiber structural component and is bonded to the B-pillar reinforcement plate to form a high-temperature resistant and lightweight vehicle B-pillar assembly structure, and the support plate is provided with a plurality of second mounting holes that match the first mounting holes. The vehicle B-pillar assembly structure is formed by bonding a support plate made of carbon fiber material to a B-pillar reinforcement plate made of sheet metal material. This structure can meet the requirements of lightweight vehicle body. At the same time, after the vehicle B-pillar assembly structure is baked at a high temperature of 150°C-215°C in a paint shop, the performance and dimensional changes of the components are stable, which can meet the performance and dimensional requirements of the entire vehicle. However, it has problems such as weak connection strength between the upper and lower bodies of the steel-aluminum hybrid body and complex overall splicing process. Summary of the Invention

[0004] One of the purposes of the present invention is to provide a vehicle body B-pillar assembly to solve the problems of weak connection strength between the upper and lower bodies of steel-aluminum hybrid vehicles and complex overall splicing process in the prior art; a second purpose is to provide a vehicle including the above-mentioned vehicle body B-pillar assembly.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0006] In some embodiments, the present invention provides a vehicle body B-pillar assembly, the vehicle body B-pillar assembly comprising:

[0007] threshold;

[0008] The B-pillar reinforcement and the B-pillar inner panel are arranged on the door sill in a direction Y of the vehicle body relative to each other, the B-pillar reinforcement and the B-pillar inner panel are fixedly connected, and the lower portions of the B-pillar reinforcement and the B-pillar inner panel are fixedly connected to the door sill; and

[0009] The lower inner panel reinforcement is arranged between the B-pillar reinforcement and the B-pillar inner panel, and the lower inner panel reinforcement is fixedly connected to the B-pillar inner panel and the door sill respectively.

[0010] In some embodiments, the door sill is formed by one-piece extrusion.

[0011] In some embodiments, the interior of the door sill is divided into a plurality of cavities by at least one vertical rib and at least one horizontal rib.

[0012] In some embodiments, the B-pillar reinforcement is made using a thermoforming process, and a first cavity structure is provided in the side impact area of ​​the part along the Y direction of the vehicle body.

[0013] In some embodiments, the surface of the B-pillar reinforcement is provided with bosses and / or concave-convex bosses.

[0014] In some embodiments, the vehicle body B-pillar assembly further includes a hinge reinforcement, which is fixedly disposed on an inner side of the B-pillar reinforcement.

[0015] In some embodiments, the upper portion of the hinge reinforcement extends beyond a transition position between the first cavity structure and the non-cavity structure of the B-pillar reinforcement, and the lower portion extends beyond a placement position where the belt retractor is mounted.

[0016] In some embodiments, the cross section of the hinge reinforcement is U-shaped, and the flanged overlapping surface is provided with an overlapping boss.

[0017] In some embodiments, the hinge reinforcement is made of cold-punched high-strength, high-ductility quenched steel.

[0018] In some embodiments, the B-pillar inner panel comprises:

[0019] an upper inner panel, welded to the B-pillar reinforcement;

[0020] The top surface of the lower inner plate abuts against the bottom surface of the upper inner plate, and the bottom is fixedly connected to the door sill.

[0021] In some embodiments, the upper inner plate is a thermoformed part including a patch plate, and the upper portion is a second cavity structure, and the maximum depth of the second cavity structure is 60 mm.

[0022] In some embodiments, a pre-fastener is provided at the abutting position between the upper inner panel and the lower inner panel.

[0023] In some embodiments, the lower inner panel reinforcement and the lower inner panel are both made of cold-punched high-strength, high-ductility quenched steel.

[0024] In some embodiments, the present invention further provides a vehicle, comprising a vehicle body, wherein the vehicle body comprises the vehicle body B-pillar assembly as described above.

[0025] Beneficial effects of the present invention:

[0026] By adding a lower inner panel reinforcement disposed between the B-pillar reinforcement and the lower inner panel, the present invention can effectively improve the lower inner connection strength of the vehicle body B-pillar assembly, avoid the problem of lower inner panel connection failure in side collisions, and thus improve the side collision performance of the vehicle body B-pillar assembly.

[0027] The present invention effectively solves the problems in the prior art of poor B-pillar structural performance strength of a steel-aluminum hybrid vehicle body, weak connection strength between the upper and lower vehicle bodies, and complex overall assembly process.

[0028] The present invention can effectively improve the body safety performance of the entire vehicle.

[0029] The vehicle body B-pillar assembly of the present invention can be applied to a B-pillar structure of a frameless door design. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is an assembly drawing of the vehicle body B-pillar assembly of the present invention;

[0031] Figure 2 It is a schematic diagram of the structure of each part of the vehicle body B-pillar assembly;

[0032] Figure 3 Schematic diagram of the structure of the threshold;

[0033] Figure 4 Schematic diagram of the structure of the upper inner plate;

[0034] Figure 5 Schematic diagram of the connection structure between the B-pillar reinforcement and the hinge reinforcement;

[0035] Among them, 1-sill, 11-horizontal reinforcement, 12-vertical reinforcement;

[0036] 2-B-pillar reinforcement, 21-transition point between the first cavity structure and the non-cavity structure;

[0037] 31-upper inner plate, 311-patch plate, 32-lower inner plate, 33-pre-fastener;

[0038] 4-Hinge reinforcement;

[0039] 5-Lower inner panel reinforcement;

[0040] 6- Install the belt retractor layout location. DETAILED DESCRIPTION

[0041] The following describes the embodiments of the present invention with reference to the accompanying drawings and preferred embodiments. Those skilled in the art will readily appreciate the other advantages and benefits of the present invention from the disclosure herein. The present invention may also be implemented or applied through various other specific embodiments, and the various details in this specification may be modified or altered based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are intended only to illustrate the present invention and are not intended to limit the scope of protection of the present invention.

[0042] It should be noted that the illustrations provided in the following embodiments are merely schematic illustrations of the basic concept of the present invention. Therefore, the illustrations only show components related to the present invention and are not drawn according to the number, shape, and size of components in actual implementation. In actual implementation, the type, quantity, and proportion of each component may be changed arbitrarily, and the component layout may also be more complex.

[0043] It should be noted that all directional indications (such as up, down, top, bottom, and inside) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0044] In the present invention, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0045] In addition, in the present invention, descriptions such as "first" and "second" are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0046] It should be noted that the illustrations provided in the following embodiments are merely schematic illustrations of the basic concept of the present invention. Therefore, the illustrations only show components related to the present invention and are not drawn according to the number, shape, and size of components in actual implementation. In actual implementation, the type, quantity, and proportion of each component may be changed arbitrarily, and the component layout may also be more complex.

[0047] The present invention will be described in detail below by way of specific examples. It should also be understood that the following examples are only used to specifically illustrate the present invention and are not to be construed as limiting the scope of protection of the present invention. Any non-essential improvements and adjustments made by those skilled in the art based on the above content of the present invention fall within the scope of protection of the present invention.

[0048] In the related art, the vehicle B-pillar assembly structure has problems such as weak connection strength between the upper and lower parts of the steel-aluminum hybrid body and complex overall splicing process. To solve the above technical problems, this application proposes a vehicle body B-pillar assembly.

[0049] See also Figures 1 to 2 In some embodiments, the vehicle body B-pillar assembly of the embodiment of the present invention includes a door sill 1, a B-pillar reinforcement 2, a B-pillar inner panel, a hinge reinforcement 4 and a lower inner panel reinforcement 5.

[0050] See also Figure 3 The threshold 1 is formed by one-piece extrusion. The material of the threshold 1 can be aluminum alloy, etc. The interior of the threshold 1 is divided into several cavities by at least one vertical rib 12 and at least one horizontal rib 11. There is no restriction on the number of vertical ribs 12 and horizontal ribs 11. For example, the number of horizontal ribs 11 can be 2, and the number of vertical ribs 12 can be 3. These horizontal ribs 11 and vertical ribs 12 divide the interior of the threshold 1 into several cavities.

[0051] Specifically, the vehicle body B-pillar assembly of the embodiment of the present invention can improve the side impact performance of the B-pillar by configuring the interior of the door sill 1 to be divided into several cavities by at least one vertical rib 12 and at least one horizontal rib 11, while improving the torsional performance of the entire vehicle and thereby improving comfort.

[0052] See also Figure 5 The B-pillar reinforcement 2 is positioned relative to the door sill 1 along the Y-axis of the vehicle body. The lower portion of the B-pillar reinforcement 2 is fixedly connected to the door sill 1. Specifically, the lower portion of the B-pillar reinforcement 2 is fixedly connected to the door sill 1 via FDS (hot-melt self-tapping screws). The B-pillar reinforcement 2 is also fixedly connected to the B-pillar inner panel. The B-pillar reinforcement 2 is manufactured using a thermoforming process and is provided with a side impact area. This area has a first cavity structure along the Y-axis of the vehicle body. The depth of the first cavity structure is 95-105mm. The surface of the B-pillar reinforcement 2 is provided with raised and / or concave-convex areas.

[0053] Specifically, the B-pillar assembly of this embodiment of the present invention effectively improves its structural strength by providing a first cavity structure 21 along the Y-axis of the vehicle body in the side impact area of ​​the B-pillar reinforcement 2. The structural strength of the B-pillar assembly can be further enhanced by providing raised and / or recessed bosses on the surface of the B-pillar reinforcement 2. The lower portion of the B-pillar reinforcement 2 is fixedly connected to the door sill 1 using FDS (hot-melt self-tapping screws), simplifying the assembly process.

[0054] See also Figure 1 and Figure 4 The B-pillar inner panel is arranged relative to the door sill 1 along the Y direction of the vehicle body. The B-pillar inner panel includes an upper inner panel 31 and a lower inner panel 32. Among them, the upper inner panel 31 is welded to the B-pillar reinforcement 2, and the upper inner panel 31 is a hot-formed part containing a patch plate 311. The upper part of the upper inner panel 31 is a second cavity structure with a maximum depth of 60 mm. The top surface of the lower inner panel 32 abuts against the bottom surface of the upper inner panel 31, and a pre-fastener 33 is provided at the abutting position of the upper inner panel 31 and the lower inner panel 32. The bottom of the lower inner panel 32 is fixedly connected to the door sill 1. Specifically, the bottom of the lower inner panel 32 is fixedly connected to the door sill 1 through a pre-opening structure using FDS (hot-melt self-tapping screws). The lower inner panel 32 is made of cold-punched high-strength and high-ductility quenched steel.

[0055] Specifically, the vehicle body B-pillar assembly of the present embodiment improves the upper and lower body connection strength of the vehicle body B-pillar assembly by positioning the B-pillar reinforcement 2 and the B-pillar inner panel relative to each other along the vehicle body Y direction. The B-pillar reinforcement 2 is fixedly connected to the B-pillar inner panel, and its lower portion is fixedly connected to the door sill 1. By configuring the upper inner panel 31 as a hot-formed part containing a patch plate, with the upper portion forming a second cavity structure with a maximum depth of 60 mm, the vehicle body B-pillar assembly's side impact performance is effectively improved, while also enhancing its top pressure strength. By configuring the lower inner panel 32 as a cold-stamped, high-strength, high-ductility quenched steel material, it complements the hot-formed material of the outer B-pillar reinforcement 2, absorbing energy and deforming in side impacts, further enhancing the vehicle body B-pillar assembly's side impact performance. By providing a pre-fastener 33 at the abutment point between the inner panel 31 and the lower inner panel 32, it provides a preliminary positioning function, preventing the upper and lower sub-assembly components from shaking during assembly, thereby improving the structural strength of the vehicle body B-pillar assembly. By fixing the bottom of the lower inner panel 32 to the door sill 1 through a pre-opening structure using FDS (hot-melt self-tapping screws), the splicing process can be simplified.

[0056] See also Figure 5The hinge reinforcement 4 is fixedly mounted on the inner side of the B-pillar reinforcement 2. Specifically, the hinge reinforcement 4 is spot-welded to the inner side of the B-pillar reinforcement 2 along the X and Y directions. The upper portion of the hinge reinforcement 4 extends beyond the transition point 21 between the first cavity structure and the non-cavity structure of the B-pillar reinforcement 2, and the lower portion of the hinge reinforcement 4 extends beyond the location 6 where the belt retractor is mounted. The hinge reinforcement 4 has a U-shaped cross-section, and the flanged overlap surface is provided with an overlap boss 41. The hinge reinforcement 4 is made of cold-stamped, high-strength, high-ductility quenched steel.

[0057] Specifically, the vehicle body B-pillar assembly of the embodiment of the present invention is able to improve the side impact performance of the vehicle body B-pillar assembly by configuring the hinge reinforcement 4 to extend upward to a position beyond the transition between the first cavity structure and the non-cavity structure of the B-pillar reinforcement 2, and to extend downward to a position beyond the arrangement of the mounting belt retractor. This can avoid problems such as bending at the transition position of the upper cavity and structural weakening or even fracture at the lower portion due to the retractor mounting hole, by configuring the hinge reinforcement 4 to be made of cold-punched high-strength, high-ductility quenched steel. This can deform and absorb energy during a side impact, reducing the risk of failure and further improving the side impact performance of the vehicle body B-pillar assembly. By configuring the cross-section of the hinge reinforcement 4 to be U-shaped and providing a lap boss 41 on the flange lap surface, the precision of the parts can be controlled and the welding quality can be guaranteed.

[0058] Please continue reading Figure 5 The lower inner panel reinforcement 5 is positioned between the B-pillar reinforcement 2 and the lower inner panel 3. It is fixedly connected to the lower inner panel 32 and the side sill 1, respectively. Specifically, the lower inner panel reinforcement 5 and the lower inner panel 3 are spot-welded to form the B-pillar lower inner panel assembly. The lower inner panel reinforcement 5 and the side sill 1 are fixedly connected in the Y and Z directions using pre-drilled holes using FDS (hot-melt tapping screws). The lower inner panel reinforcement 5 is made of cold-stamped, high-strength, high-ductility quenched steel.

[0059] Specifically, the B-pillar assembly of this embodiment of the present invention, by adding a lower inner panel reinforcement 5 between the B-pillar reinforcement 2 and the lower inner panel 3, effectively improves the lower inner connection strength of the B-pillar assembly, preventing failure of the lower inner panel 3 connection during a side impact, thereby enhancing the side impact performance of the B-pillar assembly. By configuring the lower inner panel reinforcement 5 and the side sill 1 with pre-drilled holes in the Y and Z directions, secured with FDS (hot-melt self-tapping screws), the assembly process is simplified.

[0060] The principle of the vehicle body B-pillar assembly in the embodiment of the present invention is: by adding a lower inner panel reinforcement 5 arranged between the B-pillar reinforcement 2 and the lower inner panel 3, the lower inner side connection strength of the vehicle body B-pillar assembly can be effectively improved, thereby avoiding the problem of connection failure of the lower inner panel 3 in a side collision, and thus improving the side collision performance of the vehicle body B-pillar assembly.

[0061] In some embodiments, the present invention further provides a vehicle, which includes a body, wherein the body includes the body B-pillar assembly as described above.

[0062] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed herein are intended to be covered by the claims of the present invention.

Claims

1. A vehicle body B-pillar assembly, characterized in that: The vehicle body B-pillar assembly includes: threshold; The B-pillar reinforcement and the B-pillar inner panel are arranged on the door sill in a direction Y of the vehicle body relative to each other, the B-pillar reinforcement and the B-pillar inner panel are fixedly connected, and the lower portions of the B-pillar reinforcement and the B-pillar inner panel are fixedly connected to the door sill; and a lower inner panel reinforcement, disposed between the B-pillar reinforcement and the B-pillar inner panel, the lower inner panel reinforcement being fixedly connected to the B-pillar inner panel and the door sill respectively; The B-pillar reinforcement is made by a thermoforming process, and a first cavity structure is provided in the side impact area of ​​the part along the Y direction of the vehicle body, and the depth of the first cavity structure is 95-105 mm.

2. The vehicle body B-pillar assembly according to claim 1, characterized in that: The door sill is formed by integral extrusion.

3. The vehicle body B-pillar assembly according to claim 1, characterized in that: The interior of the door sill is divided into a plurality of cavities by at least one vertical rib and at least one horizontal rib.

4. The vehicle body B-pillar assembly according to claim 1, characterized in that: The surface of the B-pillar reinforcement is provided with bosses and / or concave-convex bosses.

5. The vehicle body B-pillar assembly according to claim 1, characterized in that: The vehicle body B-pillar assembly further includes a hinge reinforcement, which is fixedly disposed on the inner side of the B-pillar reinforcement.

6. The vehicle body B-pillar assembly according to claim 5, characterized in that: The upper portion of the hinge reinforcement extends beyond a transition position between the first cavity structure and the non-cavity structure of the B-pillar reinforcement, and the lower portion extends beyond a placement position for mounting the belt retractor.

7. The vehicle body B-pillar assembly according to claim 5, characterized in that: The cross section of the hinge reinforcement is U-shaped, and the flanged overlapping surface is provided with an overlapping boss.

8. The vehicle body B-pillar assembly according to claim 5, characterized in that: The hinge reinforcement is made of cold-punched high-strength and high-ductility quenched steel.

9. The vehicle body B-pillar assembly according to claim 1, characterized in that: The B-pillar inner panel comprises: an upper inner panel, welded to the B-pillar reinforcement; The top surface of the lower inner panel abuts against the bottom surface of the upper inner panel, the bottom is fixedly connected to the door sill, and the lower inner panel reinforcement is fixedly connected to the B-pillar inner panel.

10. The vehicle body B-pillar assembly according to claim 9, characterized in that: The upper inner plate is a thermoformed part containing a patch plate, and the upper part is a second cavity structure, the maximum depth of the second cavity structure is 60 mm.

11. The vehicle body B-pillar assembly according to claim 9, characterized in that: A pre-fastener is provided at the abutting position between the upper inner plate and the lower inner plate.

12. The vehicle body B-pillar assembly according to claim 9, characterized in that: The lower inner panel reinforcement and the lower inner panel are both made of cold-punched high-strength, high-ductility quenched steel.

13. A vehicle comprising a vehicle body, characterized in that: The vehicle body includes the vehicle body B-pillar assembly according to any one of claims 1-12.

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