B column reinforcing plate, vehicle frame and vehicle
The three-layer reinforcement plate structure and induction groove design solve the problem of easy fracture of welds in the B-pillar structure, thereby improving the strength of the B-pillar and the collision safety performance of the vehicle.
Patent Information
- Application Number
- CN202423030009.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-09
- Publication Date
- 2025-09-19
- Estimated Expiration
- 2034-12-09
AI Technical Summary
The connection between the hard and soft areas of the B-pillar structure is not strong enough, and the welds are prone to breakage, resulting in insufficient strength of the B-pillar and failure to meet the collision safety performance requirements and collision safety performance requirements.
A three-layer reinforcement plate structure is adopted, including the first reinforcement plate, the second reinforcement plate and the third reinforcement plate. The third reinforcement plate covers the weld seam to enhance the strength of the weld seam area, and disperses the impact force through the induction groove and the reinforcement flange to reduce the stress near the weld seam.
The strength of the B-pillar is improved, the risk of weld fracture is reduced, and the collision safety performance of the vehicle is improved.
Smart Images
Figure CN223355709U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of automotive technology, and in particular to a B-pillar reinforcement plate, a vehicle frame, and a vehicle. Background Art
[0002] The B-pillar structure is a key component of the vehicle. It is located between the front door and the rear door of the vehicle. It supports the roof and absorbs the impact of collisions, effectively protecting the safety of the driver and passengers.
[0003] The B-pillar structure is typically welded together using a hard upper section made of high-tensile-strength material and a soft lower section made of relatively low-tensile-strength material. This ensures that the B-pillar meets both support strength and collision safety requirements. However, the connection between the hard and soft sections of the B-pillar is insufficiently strong, and the welds between the hard and soft sections are prone to fracture, resulting in insufficient B-pillar strength. Therefore, improvements are needed to improve the B-pillar structure and enhance both the strength of the vehicle and the vehicle. Utility Model Content
[0004] The main purpose of this application is to provide a B-pillar reinforcement plate, a vehicle frame and a vehicle, aiming to solve the above-mentioned technical problems existing in the prior art.
[0005] To solve the above problems, the present application provides a B-pillar reinforcement plate, which includes a first reinforcement plate, a second reinforcement plate and a third reinforcement plate. The first reinforcement plate is welded to the second reinforcement plate, and there is a welding seam at the connection between the first reinforcement plate and the second reinforcement plate. The third reinforcement plate connects the first reinforcement plate and the second reinforcement plate at the same time, and the third reinforcement plate covers the welding seam.
[0006] Preferably, a first induction groove and a second induction groove are provided on the second reinforcing plate, the first induction groove is located between the third reinforcing plate and the second induction groove, and the length of the second induction groove is greater than that of the first induction groove.
[0007] Preferably, there are multiple first induction grooves, and the multiple first induction grooves are arranged at intervals on the second reinforcing plate.
[0008] Preferably, the B-pillar reinforcement plate includes a first hinge mounting portion, and the first hinge mounting portion is arranged on the second reinforcement plate between the first induction groove and the second induction groove.
[0009] Preferably, the B-pillar reinforcement plate includes a reinforcement flange portion, which is arranged on the second reinforcement plate between the first induction groove and the second induction groove, and a portion of the reinforcement flange portion surrounds the first hinge mounting portion.
[0010] Preferably, the reinforcing flange portion divides the second reinforcing plate between the first induction groove and the second induction groove into a plurality of sub-energy absorbing portions.
[0011] Preferably, the third reinforcing plate includes a reinforcing main body portion and a reinforcing connection portion bent and connected to the reinforcing main body portion, the reinforcing connection portion is connected to the first reinforcing plate and the second reinforcing plate, the reinforcing connection portion has a connected boss portion and a sunken platform portion, and there is a step between the boss portion and the sunken platform portion.
[0012] Preferably, a second hinge mounting portion is provided on the reinforcement body portion, and the welding seam is spaced apart from the second hinge mounting portion.
[0013] To solve the above problems, the present application also provides a vehicle frame, which includes a rocker beam and the above-mentioned B-pillar reinforcement plate, one end of the second reinforcement plate of the B-pillar reinforcement plate is connected to the rocker beam, and the second induction groove of the B-pillar reinforcement plate is adjacent to the rocker beam.
[0014] To solve the above problems, the present application also provides a vehicle, which includes the above vehicle frame.
[0015] Compared to the prior art, the B-pillar reinforcement plate of the present application includes a first reinforcement plate, a second reinforcement plate, and a third reinforcement plate. The first reinforcement plate is welded to the second reinforcement plate, and a weld seam is formed at the connection between the first and second reinforcement plates. The third reinforcement plate connects both the first and second reinforcement plates, and the third reinforcement plate covers the weld seam. Through the above embodiment, the third reinforcement plate reinforces the weld seam between the first and second reinforcement plates. At the same time, the first and second reinforcement plates in the area near the weld seam are also reinforced by the third reinforcement plate, thereby strengthening the B-pillar reinforcement plate in the weld seam area, making the B-pillar reinforcement plate less prone to fracture and improving its strength. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0017] Figure 1 This is a structural diagram of an embodiment of a B-pillar reinforcement plate provided by this application;
[0018] Figure 2 yes Figure 1 The structural diagram of the B-pillar reinforcement plate without the third reinforcement plate is shown;
[0019] Figure 3 yes Figure 1 The structural schematic diagram of the third reinforcement plate in the B-pillar reinforcement plate is shown.
[0020] Figure numbers: B-pillar reinforcement plate 1; first reinforcement plate 10; second reinforcement plate 20; first induction groove 210; second induction groove 220; reinforcement flange portion 230; sub-energy absorption portion 240; third reinforcement plate 30; reinforcement body portion 310; reinforcement connection portion 320; boss portion 321; sinking portion 322; welding seam 40; first hinge mounting portion 50; second hinge mounting portion 60. DETAILED DESCRIPTION
[0021] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.
[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.
[0023] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.
[0024] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.
[0025] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.
[0026] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).
[0027] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.
[0028] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.
[0029] The B-pillar structure is typically welded together using a hard upper section made of high-tensile-strength material and a soft lower section made of relatively low-tensile-strength material. This ensures that the B-pillar meets both support strength and collision safety requirements. However, the connection between the hard and soft sections of the B-pillar is insufficiently strong, and the welds between the hard and soft sections are prone to fracture, resulting in insufficient B-pillar strength. Therefore, improvements are needed to improve the B-pillar structure and enhance both the strength of the vehicle and the vehicle.
[0030] In order to solve the related technical problems, this application provides a B-pillar reinforcement plate, see Figure 1-Figure 3 , Figure 1 This is a schematic structural diagram of an embodiment of a B-pillar reinforcement plate provided by this application. Figure 2 yes Figure 1 The structural diagram of the B-pillar reinforcement plate without the third reinforcement plate is shown. Figure 3 yes Figure 1 The structural schematic diagram of the third reinforcement plate in the B-pillar reinforcement plate is shown.
[0031] The B-pillar reinforcement plate 1 includes a first reinforcement plate 10, a second reinforcement plate 20, and a third reinforcement plate 30. The first reinforcement plate 10 is welded to the second reinforcement plate 20, and a weld seam 40 is formed at the connection between the first reinforcement plate 10 and the second reinforcement plate 20. The third reinforcement plate 30 connects both the first reinforcement plate 10 and the second reinforcement plate 20, and covers the weld seam 40. Through the above embodiment, the third reinforcement plate 30 reinforces the weld seam 40 at the connection between the first reinforcement plate 10 and the second reinforcement plate 20. Part of the third reinforcement plate 30 covers and connects to the first reinforcement plate 10, while another part covers and connects to the second reinforcement plate 20. Therefore, the first reinforcement plate 10 and the second reinforcement plate 20 in the vicinity of the weld seam 40 are also reinforced by the third reinforcement plate 30, thereby strengthening the strength of the B-pillar reinforcement plate 1 in the area of the weld seam 40, making the B-pillar reinforcement plate 1 less prone to fracture and improving the strength of the B-pillar reinforcement plate 1. Preferably, the length of the third reinforcing plate 30 overlapping the second reinforcing plate 20 is 220 mm. Of course, the overlapping dimension between the third reinforcing plate 30 and the second reinforcing plate 20 can be adjusted to other values based on actual conditions and is not a limitation here. It is sufficient to ensure that the third reinforcing plate 30 and the second reinforcing plate 20 have a certain overlap to enhance the strength of the weld seam 40. The third reinforcing plate 30 can enhance the strength of the area near the weld seam 40, but it also increases the weight of the B-pillar reinforcement plate 1. Therefore, the overlapping dimension between the third reinforcing plate 30 and the second reinforcing plate 20 can be adjusted based on a comprehensive consideration of strength, weight, and collision energy absorption performance.
[0032] It should be noted that the first reinforcing plate 10 and the second reinforcing plate 20 are arranged along the height direction of the vehicle, one end of the first reinforcing plate 10 is connected to the roof, and the other end of the first reinforcing plate 10 and one end of the second reinforcing plate 20 can be connected by laser welding; because the first reinforcing plate 10 supports the roof, the second reinforcing plate 20 needs to absorb collision energy, so the strength of the first reinforcing plate 10 is set to be greater than the strength of the second reinforcing plate 20. The first reinforcing plate 10 can adopt a hot-formed steel material with a tensile strength of 1500MPa, and the second reinforcing plate 20 can adopt a hot-formed steel material with a tensile strength of 1000Mpa. The thickness of the second reinforcing plate 20 can be 1.5mm. Of course, the tensile strength and thickness of the second reinforcing plate 20 can also be adjusted according to actual conditions. If the tensile strength decreases, the thickness needs to be increased so that it needs to meet both the collision energy absorption requirements and the strength requirements (to ensure that the second reinforcing plate 20 does not break).
[0033] The second reinforcing plate 20 is provided with a first guiding groove 210 and a second guiding groove 220. The first guiding groove 210 is located between the third reinforcing plate 30 and the second guiding groove 220, and the second guiding groove 220 is longer than the first guiding groove 210. The second reinforcing plate 20 is required to absorb the impact force generated by a vehicle collision. The first guiding groove 210 and the second guiding groove 220 are provided to induce deformation of the second reinforcing plate 20, so that the lower area of the second reinforcing plate 20 not covered by the third reinforcing plate 30 preferentially absorbs the impact force of the collision, reducing the local stress in the upper area of the second reinforcing plate 20 near the weld seam 40, that is, the area where the second reinforcing plate 20 is covered and connected by the third reinforcing plate 30, thereby reducing the risk of fracture of the weld seam 40. Preferably, the first induction groove 210 is arranged in the area close to the side of the second reinforcing plate 20. The first induction groove 210 can be arranged 60 mm below the third reinforcing plate 30 in the vehicle height direction. Of course, it can also be other values, so that the first induction groove 210 and the third reinforcing plate 30 have a certain distance. The farther the distance between the first induction groove 210 and the third reinforcing plate 30 (that is, the distance between the first induction groove 210 and the weld seam 40) is, the smaller the stress at the weld seam 40 during a collision will be. However, the deformation induction area between the first induction groove 210 and the second induction groove 220 is larger. The impact force on this area may be too great, and the second reinforcing plate 20 may be at risk of breaking. Therefore, the spacing between the first induction groove 210 and the third reinforcing plate 30 is adjusted based on the actual situation. The first induction groove 210 can be an annular groove with a depth of 5 mm, a width of 30 mm, and a length of 30 mm, so that when a collision occurs, the second reinforcing plate 20 is deformed inward from the edge to the annular groove. The size and shape of the first induction groove 210 are not limited. For example, the shape of the first induction groove 210 can be a circular groove, which can be adjusted based on the actual situation. The second induction groove 220 extends toward both sides of the second reinforcing plate 20. The second induction groove 220 is farther away from the weld seam 40 than the first induction groove 210. The length of the second induction groove 220 is greater than that of the first induction groove 210, so that the second reinforcing plate 20 is preferentially deformed and absorbs energy in the second induction groove 220 area, thereby reducing the stress on the weld seam 40.
[0034] There are multiple first induction grooves 210, and multiple first induction grooves 210 are arranged at intervals on the second reinforcing plate 20. Preferably, the number of first induction grooves 210 is set to two, and the two first induction grooves 210 are arranged at intervals on both sides of the second reinforcing plate 20 to guide the second reinforcing plate 20 to deform inward from the edge, so that the lower area of the second reinforcing plate 20 away from the weld seam 40 can fully deform and absorb energy, reduce the stress on the second reinforcing plate 20 close to the weld seam 40, and reduce the risk of fracture of the weld seam 40; the number of first induction grooves 210 can also be other values, such as 3.
[0035] The B-pillar reinforcement plate 1 includes a first hinge mounting portion 50, which is disposed on the second reinforcement plate 20 between the first guide groove 210 and the second guide groove 220. The first hinge mounting portion 50 is used to mount a vehicle hinge, which is used to connect the vehicle door. To prevent the connection strength of the vehicle door from being affected, the first and second guide grooves 210, 220 are spaced apart from the first hinge mounting portion 50.
[0036] The B-pillar reinforcement plate 1 includes a reinforcing flange 230, which is disposed on the second reinforcement plate 20 between the first and second guide grooves 210 and 220. A portion of the reinforcing flange 230 surrounds the first hinge mounting portion 50. The reinforcing flange 230 protrudes from the surface of the second reinforcement plate 20 to enhance the torsional rigidity of the second reinforcement plate 20, making it less susceptible to breakage during collision deformation. The reinforcing flange 230 partially surrounds the first hinge mounting portion 50 to strengthen its strength.
[0037] The reinforcing flange portion 230 separates the second reinforcing plate 20 between the first inducing groove 210 and the second inducing groove 220 into a plurality of sub-energy absorbing portions 240. The reinforcing flange portion 230 forms a step on the surface of the second reinforcing plate 20, thereby reinforcing the local strength of the second reinforcing plate 20. The local strength of the reinforcing flange portion 230 is greater than the strength of the sub-energy absorbing portion 240, thereby guiding the second reinforcing plate 20 to be recessed toward each sub-energy absorbing portion 240, so that the second reinforcing plate 20 area between the first inducing groove 210 and the second inducing groove 220 can fully and evenly absorb energy, reducing the local stress on the second reinforcing plate 20. Part of the reinforcing flange portion 230 extends and connects to the second inducing groove 220, so that the deformation of the second inducing groove 220 area can be better transmitted to the sub-energy absorbing portion 240.
[0038] The third reinforcing plate 30 includes a reinforcing body portion 310 and a reinforcing connection portion 320 that is bent and connected to the reinforcing body portion 310. The reinforcing connection portion 320 is connected to the first reinforcing plate 10 and the second reinforcing plate 20. The reinforcing connection portion 320 has a connected boss portion 321 and a recessed portion 322, with a step between the boss portion 321 and the recessed portion 322. The third reinforcing plate 30 is generally U-shaped. The reinforcing connection portion 320 is bent and connected to the reinforcing body portion 310, allowing the third reinforcing plate 30 to bend and extend in different directions. This helps to improve the torsional rigidity of the third reinforcing plate 30 and also helps form a cavity between the third reinforcing plate 30, the first reinforcing plate 10, and the second reinforcing plate 20, thereby facilitating energy absorption during a collision. The boss portion 321 and the recessed portion 322 extend in different directions on the same side surface of the reinforcing connection portion 320, helping to improve the strength of the reinforcing connection portion 320 and the third reinforcing plate 30.
[0039] A second hinge mounting portion 60 is provided on the reinforcement main body portion 310, and the welding seam 40 is separated from the second hinge mounting portion 60. The second hinge mounting portion 60 is located on the reinforcement main body portion 310 corresponding to the first reinforcing plate 10. The second hinge mounting portion 60 is used to install the vehicle hinge, and the vehicle hinge is used to connect the vehicle door. The first hinge mounting portion 50 and the second hinge mounting portion 60 are jointly connected to the vehicle door. The welding seam 40 is separated from the second hinge mounting portion 60 to avoid mutual interference with the vehicle door.
[0040] To sum up, the third reinforcing plate 30 covers and is connected to the first reinforcing plate 10 and the second reinforcing plate 20, and the welding seam 40 is covered by the third reinforcing plate 30, so that the strength of the first reinforcing plate 10 and the second reinforcing plate 20 in the welding seam 40 and the vicinity thereof is strengthened, thereby reducing the risk of fracture of the welding seam 40 and improving the strength of the B-pillar reinforcement plate 1; the setting of the first induction groove 210, the second induction groove 220 and the reinforcing flange portion 230 enables the second reinforcing plate 20 away from the welding seam 40 to fully deform and absorb energy, thereby reducing the stress on the welding seam 40 and the vicinity thereof and reducing the risk of fracture of the welding seam 40.
[0041] The present application also provides a vehicle frame, comprising a rocker beam and the aforementioned B-pillar reinforcement plate 1. One end of the second reinforcement plate 20 of the B-pillar reinforcement plate 1 is connected to the rocker beam, and the second guide groove 220 of the B-pillar reinforcement plate 1 is adjacent to the rocker beam. The rocker beam is located on the vehicle chassis, and the second guide groove 220 is disposed adjacent to the second reinforcement plate 20 and the rocker beam to help guide deformation toward the second reinforcement plate 20, thereby reducing damage to the rocker beam and chassis.
[0042] The present application also provides a vehicle, which includes the above-mentioned vehicle frame. The vehicle of the present application can effectively improve strength and collision safety performance.
[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.
Claims
1. A B-pillar reinforcement plate, characterized in that: The B-pillar reinforcement plate includes a first reinforcement plate, a second reinforcement plate and a third reinforcement plate. The first reinforcement plate is welded to the second reinforcement plate. There is a welding seam at the connection between the first reinforcement plate and the second reinforcement plate. The third reinforcement plate connects the first reinforcement plate and the second reinforcement plate at the same time, and the third reinforcement plate covers the welding seam.
2. The B-pillar reinforcement plate according to claim 1, characterized in that: A first induction groove and a second induction groove are provided on the second reinforcing plate. The first induction groove is located between the third reinforcing plate and the second induction groove. The length of the second induction groove is greater than that of the first induction groove.
3. The B-pillar reinforcement plate according to claim 2, characterized in that: There are multiple first induction grooves, and the multiple first induction grooves are arranged at intervals on the second reinforcing plate.
4. The B-pillar reinforcement plate according to claim 2, characterized in that: The B-pillar reinforcement plate includes a first hinge mounting portion, which is disposed on the second reinforcement plate between the first induction groove and the second induction groove.
5. The B-pillar reinforcement plate according to claim 4, characterized in that: The B-pillar reinforcement plate includes a reinforcement flange portion, which is disposed on the second reinforcement plate between the first induction groove and the second induction groove, and a portion of the reinforcement flange portion surrounds the first hinge mounting portion.
6. The B-pillar reinforcement plate according to claim 5, characterized in that: The reinforcing flange portion divides the second reinforcing plate between the first induction groove and the second induction groove into a plurality of sub-energy absorbing portions.
7. The B-pillar reinforcement plate according to claim 1, characterized in that: The third reinforcing plate includes a reinforcing main body and a reinforcing connection part bent and connected to the reinforcing main body. The reinforcing connection part is connected to the first reinforcing plate and the second reinforcing plate. The reinforcing connection part has a connected boss part and a sink part, and a step is provided between the boss part and the sink part.
8. The B-pillar reinforcement plate according to claim 7, characterized in that: A second hinge mounting portion is provided on the reinforcement body portion, and the welding seam is spaced apart from the second hinge mounting portion.
9. A vehicle frame, characterized in that: The vehicle frame includes a rocker beam and a B-pillar reinforcement plate according to any one of claims 1 to 8, one end of the second reinforcement plate of the B-pillar reinforcement plate is connected to the rocker beam, and the second induction groove of the B-pillar reinforcement plate is adjacent to the rocker beam.
10. A vehicle, characterized in that: The vehicle includes the vehicle frame of claim 9 .