A door sill reinforcement beam, a door sill beam assembly, and an automobile

Abstract

This application relates to the field of automotive structural technology, disclosing a door sill reinforcement beam, a door sill beam assembly, and an automobile. The door sill reinforcement beam provided by this application includes a main body, within which multiple cavities are formed in a transversely connected manner. These cavities include a first cavity, at least one second cavity, and at least one third cavity. The second and third cavities are located on opposite sides of the first cavity in the transverse direction. At least a portion of the cavities are provided with reinforcing structures, such that the stiffness of the first cavity is greater than the stiffness of the second cavity, and the stiffness of the first cavity is greater than the stiffness of the third cavity. This allows the door sill reinforcement beam to collapse and absorb energy while also possessing sufficient structural support stiffness.

Description

Technical Field

[0001] This application relates to the field of automotive structural technology, and more particularly to a door sill reinforcement beam, a door sill beam assembly, and an automobile. Background Technology

[0002] The vehicle door sill is a key energy absorption area in a side impact. Furthermore, due to the small side cavity space and the close proximity of occupants to the impact point, the structure of the door sill is crucial for occupant protection. In addition, currently, the power batteries of new energy vehicles are installed on the door sill beams. When a new energy vehicle is involved in a side impact, in addition to potential injuries to occupants, it can also cause impacts on the power battery, potentially leading to extreme safety accidents such as battery explosion. Therefore, it is urgent to improve the overall collision performance of the vehicle door sill to address these issues. Utility Model Content

[0003] In view of this, embodiments of this application provide a sill reinforcement beam, a sill beam assembly, and a vehicle, which aims to enable the sill reinforcement beam to collapse and absorb energy while also having sufficient structural support stiffness to improve the overall collision performance of the vehicle sill.

[0004] To achieve the above objectives, the technical solution of this application embodiment is implemented as follows: In a first aspect, embodiments of this application provide a sill reinforcement beam, wherein the sill reinforcement beam includes a main body, and the main body has a plurality of cavities sequentially connected in the transverse direction. The plurality of cavities include a first cavity, at least one second cavity, and at least one third cavity. The second cavity and the third cavity are located on both sides of the first cavity in the transverse direction, and at least a portion of the cavities are provided with reinforcement structures, such that the stiffness of the first cavity is greater than the stiffness of the second cavity, and the stiffness of the first cavity is greater than the stiffness of the third cavity.

[0005] The door sill reinforcement beam provided in this application embodiment is applied in the vehicle door sill. It includes multiple cavities connected sequentially in the transverse direction, and at least some of the cavities are provided with reinforcement structures. The multiple cavities include a first cavity with greater stiffness, and a second cavity and a third cavity located on both sides of it. When a collision occurs, the second cavity and the third cavity with less stiffness can collapse and absorb energy in the early stage of the collision to reduce the collision energy. At the same time, in the later stage of the collision, the first cavity with greater stiffness can form a rigid structure to maintain the shape of the vehicle door sill and prevent the vehicle door sill from further collapsing and causing direct collision injury to the occupants in the passenger compartment. In new energy vehicles, it also prevents the power battery from being directly impacted by the collision, so as to greatly reduce the probability of extreme safety accidents such as battery explosion.

[0006] In one possible implementation of this application, the reinforcing structure includes reinforcing ribs disposed within the cavity.

[0007] In this embodiment, reinforcing ribs are provided in the cavity to improve the rigidity of the cavity. Furthermore, by providing reinforcing ribs in some of the cavities, different cavities can have different rigidities to meet functional requirements.

[0008] In one possible implementation of this application, the reinforcing rib is provided to extend laterally.

[0009] In this embodiment, the reinforcing rib is defined as extending laterally, mainly considering that the vehicle sill is for side collision protection, that is, the actual application scenario is to protect against lateral collisions. The reinforcing rib structure extending laterally is set in the cavity, and its structural characteristics are used to mainly enhance the structural rigidity of the sill reinforcement beam in the lateral direction to meet functional requirements.

[0010] In one possible implementation of this application, a first reinforcing rib is provided inside the first cavity, and the first reinforcing rib extends laterally and is inclined relative to the lateral direction.

[0011] This embodiment proposes a first reinforcing rib structure installed inside the first cavity. Based on its lateral extension, it is inclined relative to the lateral direction. In order to enhance the rigidity of the first cavity when subjected to lateral impact force, in addition to improving the rigidity of the first cavity based on its own structural strength, it can also combine with the cavity wall of the first cavity to suppress the deformation of the first cavity, thereby further improving the rigidity of the first cavity and meeting the rigidity requirements of the first cavity.

[0012] In one possible implementation of this application, the first cavity is square in shape, such that the first cavity has a first cavity wall and a second cavity wall spaced apart in the lateral direction. Two first reinforcing ribs are provided in the first cavity, and one end of the two first reinforcing ribs is connected to the middle of the first cavity wall, and the other end of the two first reinforcing ribs is respectively connected to the two ends of the second cavity wall.

[0013] In this embodiment, the first cavity is further defined as a square structure. Furthermore, two first reinforcing ribs are provided in the first cavity, and the arrangement of the two first reinforcing ribs is designed so that the first cavity is divided into three triangular sub-cavities. By utilizing the principle of triangle stability, the rigidity of the first cavity is greatly improved, thereby ensuring the protective function of the first cavity in forming a rigid structure in the later stage of the collision.

[0014] In one possible implementation of this application, a second reinforcing rib is provided inside the second cavity, and the second reinforcing rib extends laterally so that the stiffness of the second cavity is greater than the stiffness of the third cavity.

[0015] In this embodiment, a second reinforcing rib extending laterally is provided in the second cavity, so that the stiffness of the second cavity is greater than that of the third cavity, thereby achieving two-stage energy absorption. On the one hand, this avoids the situation where the sill reinforcement beam cannot collapse to absorb energy due to small collision force, and on the other hand, it avoids the situation where the second cavity and the third cavity have a small energy absorption effect due to large collision force, so as to meet the energy absorption requirements of the sill reinforcement beam in different collision scenarios and ensure its protective performance.

[0016] In one possible implementation of this application, the threshold reinforcement beam comprises an aluminum reinforcement beam.

[0017] In this embodiment, the threshold reinforcement beam is set as an aluminum reinforcement beam. Compared with the steel structure, it is easier to form and has a smaller mass. At the same time, its structural stiffness is relatively smaller than that of the steel structure, making it suitable for collapse energy absorption scenarios and meeting functional requirements.

[0018] Secondly, this application provides a sill beam assembly, which includes an outer sill plate, an inner sill plate, and a sill reinforcing beam. The outer sill plate and the inner sill plate are spaced apart in the lateral direction. The sill reinforcing beam is disposed between the outer sill plate and the inner sill plate, with its two ends connected to the outer sill plate and the inner sill plate respectively. The sill reinforcing beam includes a plurality of cavities connected sequentially in the lateral direction, and at least some of the cavities are provided with reinforcing structures, such that the plurality of cavities include a first cavity with greater stiffness, and a second cavity and a third cavity located on both sides thereof. In the event of a collision, the second cavity and the third cavity with less stiffness in the initial stage of the collision can collapse and absorb energy to reduce the collision energy. At the same time, in the later stage of the collision, the first cavity with greater stiffness can form a rigid structure to maintain the shape of the vehicle sill, preventing the vehicle sill from further collapsing and causing direct collision injury to the occupants in the passenger compartment. In new energy vehicles, it also prevents the power battery from being directly impacted by the collision, thereby greatly reducing the probability of extreme safety accidents such as battery explosion.

[0019] In one possible implementation of this application, the outer sill plate is configured as a steel outer plate; and / or, the inner sill plate is configured as a steel inner plate.

[0020] In this embodiment, the inner sill plate is made of steel, and the outer sill plate is made of steel. This, together with the sill reinforcement beam, ensures the rigidity of the vehicle sill and meets the structural strength requirements.

[0021] Thirdly, this application provides an automobile, wherein the automobile includes a sill beam assembly, the sill beam assembly includes an outer sill plate, an inner sill plate, and a sill reinforcing beam, the outer sill plate and the inner sill plate are spaced apart in the lateral direction; the sill reinforcing beam is disposed between the outer sill plate and the inner sill plate, and its two ends are respectively connected to the outer sill plate and the inner sill plate, the sill reinforcing beam includes a plurality of cavities connected sequentially in the lateral direction, and at least some of the cavities are provided with reinforcing structures, such that the plurality of cavities include a first cavity with greater stiffness, and a second cavity and a third cavity located on both sides thereof, in the event of a collision, the second cavity and the third cavity with less stiffness in the initial stage of the collision can collapse and absorb energy to reduce the collision energy, while the first cavity with greater stiffness in the later stage of the collision can form a rigid structure to maintain the shape of the vehicle sill, avoid further collapse of the vehicle sill and direct collision injury to the occupants in the passenger compartment, and in new energy vehicles, also avoid the power battery being directly impacted by the collision, so as to greatly reduce the probability of extreme safety accidents such as battery explosion. Attached Figure Description

[0022] Figure 1 A schematic cross-sectional view of the threshold reinforcement beam provided in an embodiment of this application; Figure 2 A partial cross-sectional schematic diagram of the threshold beam assembly provided in the embodiments of this application.

[0023] Figure label: 100. Threshold reinforcement beam; 1. Main body; 11. First cavity; 11a. First cavity wall; 11b. Second cavity wall; 111. First reinforcing rib; 12. Second cavity; 121. Second reinforcing rib; 13. Third cavity; 200. Outer sill plate; 300. Inner sill plate. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the specific technical solutions of this application will be further described in detail below with reference to the accompanying drawings of the embodiments of this application. The following embodiments are used to illustrate this application, but are not intended to limit the scope of this application.

[0025] In the embodiments of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this application, unless otherwise stated, "multiple" means two or more.

[0026] Furthermore, in the embodiments of this application, directional terms such as "upper," "lower," "left," and "right" are defined relative to the positions in which the components are schematically placed in the accompanying drawings. It should be understood that these directional terms are relative concepts, used for relative description and clarification, and can change accordingly depending on the position of the components in the accompanying drawings.

[0027] In the embodiments of this application, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, "connection" can mean a fixed connection, a detachable connection, or an integral part; it can mean a direct connection or an indirect connection through an intermediate medium.

[0028] In embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0029] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0030] The vehicle door sill is a key energy absorption area in a side impact. Furthermore, due to the small side cavity space and the close proximity of occupants to the impact point, the structure of the door sill is crucial for occupant protection. In addition, currently, the power batteries of new energy vehicles are installed on the door sill beams. When a new energy vehicle is involved in a side impact, in addition to potential injuries to occupants, it can also cause impacts on the power battery, potentially leading to extreme safety accidents such as battery explosion. Therefore, it is urgent to improve the overall collision performance of the vehicle door sill to address these issues.

[0031] In view of this, this application proposes a sill reinforcement beam, please refer to [link / reference]. Figure 1 The following is an embodiment of the threshold reinforcement beam, which will be described in detail below with reference to the specific drawings.

[0032] Please see Figure 1The threshold reinforcement beam 100 provided in this application embodiment includes a main body 1. The main body 1 has a plurality of cavities connected sequentially in the transverse direction. The plurality of cavities include a first cavity 11, at least one second cavity 12 and at least one third cavity 13. The second cavity 12 and the third cavity 13 are located on both sides of the first cavity 11 in the transverse direction, and at least some of the cavities are provided with reinforcement structures, so that the stiffness of the first cavity 11 is greater than the stiffness of the second cavity 12 and the stiffness of the first cavity 11 is greater than the stiffness of the third cavity 13.

[0033] The sill reinforcement beam 100 provided in this application embodiment is applied in the vehicle sill. It includes multiple cavities connected sequentially in the transverse direction, and at least some of the cavities are provided with reinforcement structures. The multiple cavities include a first cavity 11 with greater stiffness, and a second cavity 12 and a third cavity 13 located on both sides of it. When a collision occurs, the second cavity 12 and the third cavity 13 with less stiffness can collapse and absorb energy in the early stage of the collision to reduce the collision energy. At the same time, the first cavity 11 with greater stiffness can form a rigid structure in the later stage of the collision to maintain the shape of the vehicle sill and prevent the vehicle sill from collapsing further, which would cause the occupants in the passenger compartment to be directly injured by the collision. In new energy vehicles, it also prevents the power battery from being directly impacted by the collision, so as to greatly reduce the probability of extreme safety accidents such as battery explosion.

[0034] In this embodiment of the application, the specific number of cavities is not limited, as long as the first cavity 11 can form a rigid structure and the second cavity 12 and the third cavity 13 can collapse and absorb energy.

[0035] Additionally, it should be noted that in this embodiment, the horizontal direction refers to the left-right direction of the car, while the vertical direction refers to the front-back direction of the car, and the up-down direction refers to the height direction of the car. The main body 1 has multiple cavities longitudinally formed on it. The reinforcing structure can be set independently of the main body 1 or it can be connected to the main body 1, as long as it is set in the cavity and can improve the rigidity of the cavity.

[0036] In some embodiments of this application, reference is made to Figure 1 The reinforcing structure includes reinforcing ribs disposed within the cavity. These ribs enhance the rigidity of the cavity through their own strength and can also be integrated with the cavity to further improve its rigidity. It should be noted that in some embodiments of this application, the reinforcing structure can also be configured in other structural forms, such as a support member placed within the cavity. The specific structural form of the support member is not limited, as long as it satisfies the requirement of improving the rigidity of the cavity.

[0037] In addition, it should be noted that by providing the reinforcing ribs in some of the cavities, different cavities can have different stiffnesses, thus satisfying the collapse energy absorption and rigid support functions of the threshold reinforcing beam 100.

[0038] Based on this, refer to Figure 1 In some embodiments of this application, the reinforcing ribs are provided to extend laterally. It can be understood that this is mainly because the vehicle sill is designed for side collision protection, that is, the actual application scenario is to protect against lateral collisions. The reinforcing rib structure extending laterally is provided in the cavity to enhance the lateral structural rigidity of the sill reinforcement beam 100 by utilizing its structural characteristics, thereby meeting the functional requirements.

[0039] Of course, in some embodiments of this application, the reinforcing ribs can also be configured to extend in the vertical direction, as long as they can improve the rigidity of the cavity and meet the above functional requirements.

[0040] Based on this, continue to refer to Figure 1 In some embodiments of this application, a first reinforcing rib 111 is provided within the first cavity 11. The first reinforcing rib 111 extends laterally and is inclined relative to the lateral direction. This embodiment proposes a structure for the first reinforcing rib 111 within the first cavity 11. Based on its lateral extension, it is inclined relative to the lateral direction. Therefore, when subjected to lateral impact force, in addition to enhancing the rigidity of the first cavity 11 based on its own structural strength, it can also combine with the cavity wall of the first cavity 11 to suppress the deformation of the first cavity 11, thereby further enhancing the rigidity of the first cavity 11 and meeting the rigidity requirements of the first cavity 11.

[0041] Furthermore, in some embodiments of this application, the first cavity 11 is square, such that the first cavity 11 has a first cavity wall 11a and a second cavity wall 11b spaced apart laterally. Two first reinforcing ribs 111 are provided within the first cavity 11, with one end of each first reinforcing rib 111 connected to the middle of the first cavity wall 11a, and the other ends of each second reinforcing rib 121 connected to both ends of the second cavity wall 11b. In this embodiment, the first cavity 11 is further defined as a square structure. Furthermore, two first reinforcing ribs 111 are provided within the first cavity 11, and the arrangement of the two first reinforcing ribs 111 is designed so that the first cavity 11 is divided into three triangular sub-cavities. Utilizing the principle of triangular stability, the rigidity of the first cavity 11 is greatly improved, thereby ensuring the protective function of the first cavity 11 forming a rigid structure in the later stages of a collision. It is understandable that, in addition to the arrangement of two first reinforcing ribs 111 in the above embodiments, in some embodiments, only one first reinforcing rib 111 may be provided, and the two ends of the first reinforcing rib 111 may be connected to the opposite ends of the first cavity wall 11a and the second cavity wall 11b, that is, the first reinforcing rib 111 may be set to connect the diagonals of the square first cavity 11 to divide the cavity into two triangular sub-cavities; furthermore, based on this, in other embodiments, another first reinforcing rib 111 may be provided to connect the other first reinforcing rib 11a to the opposite ends of the second cavity wall 11b. One end of the reinforcing rib 111 is connected to the middle of the first reinforcing rib 111, and the other end of the other first reinforcing rib 111 is connected to the end of the first cavity wall 11a or the second cavity wall 11b. In this way, the two first reinforcing ribs 111 divide the square first cavity 11 into three triangular sub-cavities. In addition, in other embodiments, more first reinforcing ribs 111 can be provided to divide the square first cavity 11 into multiple triangular sub-cavities to provide higher structural rigidity. The specific arrangement method depends on the actual needs and is not specifically limited here.

[0042] Furthermore, in some embodiments of this application, a second reinforcing rib 121 is provided inside the second cavity 12, and the second reinforcing rib 121 extends laterally so that the stiffness of the second cavity 12 is greater than the stiffness of the third cavity 13. It is understandable that, in order to achieve the functions of collapsible energy absorption and rigid support of the sill reinforcement beam 100, the stiffness of the second cavity 12 and the third cavity 13 can be set to be the same. However, if the stiffness of the second cavity 12 and the third cavity 13 is set to be large and the impact force is small, neither the second cavity 12 nor the third cavity 13 will collapse, resulting in the sill reinforcement beam 100 being unable to collapse and absorb energy. This allows the impact energy to be directly transmitted to the interior of the vehicle body through the sill reinforcement beam 100, causing injury to personnel or the vehicle body. Conversely, if the stiffness of the second cavity 12 and the third cavity 13 is set to be small and the impact force is large, the collapse and energy absorption effect of the second cavity 12 and the third cavity 13 is small, and the impact energy ultimately transmitted to the interior of the vehicle body is still large, posing a risk of injury to personnel or the vehicle body. Therefore, in this embodiment, a second reinforcing rib 121 extending laterally is provided in the second cavity 12 so that the stiffness of the second cavity 12 is greater than that of the third cavity 13, thereby achieving secondary energy absorption. This arrangement, compared to setting the stiffness of the second cavity 12 and the third cavity 13 to be the same, can improve the above-mentioned problems, so as to meet the energy absorption requirements of the threshold reinforcing beam 100 for different collision scenarios and ensure its protective performance.

[0043] Furthermore, in some embodiments of this application, the sill reinforcement beam 100 includes an aluminum reinforcement beam. In this embodiment, the sill reinforcement beam 100 is set as an aluminum reinforcement beam, which, compared to a steel structure, is easier to form and has a smaller mass. Simultaneously, its structural stiffness is relatively lower than that of a steel structure, making it suitable for collapse-absorbing energy scenarios and meeting functional requirements. Specifically, the sill reinforcement beam 100 in this embodiment is an extruded profile, which can be integrally formed, facilitating processing and providing strong structural stability.

[0044] This application also provides a sill beam assembly; please refer to [link / reference]. Figure 2 The sill beam assembly includes an inner sill plate 300, an outer sill plate 200, and a sill reinforcing beam 100. The outer sill plate 200 and the inner sill plate 300 are spaced apart in the horizontal direction. The sill reinforcing beam 100 is disposed between the outer sill plate 200 and the inner sill plate 300, and its two ends are respectively connected to the outer sill plate 200 and the inner sill plate 300. The specific structure of the sill reinforcing beam 100 is as described in the above embodiments. Since the sill beam assembly adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0045] In some embodiments of this application, the outer sill plate 200 is made of steel, and the inner sill plate 300 is made of steel, thereby working in conjunction with the sill reinforcement beam 100 to ensure the rigidity of the vehicle sill and meet the structural strength requirements.

[0046] This application also provides a car, which includes a door sill beam assembly. The specific structure of the door sill beam assembly is as described in the above embodiments. Since the car adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0047] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments. The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made based on the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A rocker reinforcement beam characterized by, include: The main body (1) has a plurality of cavities connected in a horizontal direction inside. The plurality of cavities include a first cavity (11), at least one second cavity (12) and at least one third cavity (13). The second cavity (12) and the third cavity (13) are located on both sides of the first cavity (11) in the horizontal direction. At least some of the cavities are provided with reinforcing structures so that the stiffness of the first cavity (11) is greater than the stiffness of the second cavity (12) and the stiffness of the first cavity (11) is greater than the stiffness of the third cavity (13).

2. The rocker reinforcement beam of claim 1, wherein, The reinforcing structure includes reinforcing ribs disposed within the cavity.

3. The rocker reinforcement beam of claim 2, wherein, The reinforcing ribs are provided to extend laterally.

4. The rocker reinforcement beam of claim 1, wherein, The first cavity (11) is provided with a first reinforcing rib (111), which extends laterally and is inclined relative to the lateral direction.

5. The rocker reinforcement beam of claim 4, wherein, The first cavity (11) is square in shape, such that the first cavity (11) has a first cavity wall (11a) and a second cavity wall (11b) spaced apart in the lateral direction. There are two first reinforcing ribs (111) in the first cavity (11), and one end of the two first reinforcing ribs (111) is connected to the middle part of the first cavity wall (11a), and the other end of the two first reinforcing ribs (111) is connected to the two ends of the second cavity wall (11b).

6. The rocker reinforcement beam of any one of claims 2-5, wherein, The second cavity (12) is provided with a second reinforcing rib (121), which extends laterally so that the rigidity of the second cavity (12) is greater than that of the third cavity (13).

7. The sill reinforcement beam as described in claim 1, characterized in that, The threshold reinforcement beam (100) includes an aluminum reinforcement beam.

8. A door sill beam assembly, characterized in that, include: The outer sill plate (200) and the inner sill plate (300) are spaced apart horizontally; as well as, A threshold reinforcement beam (100) includes a threshold reinforcement beam (100) as described in any one of claims 1-7, wherein the threshold reinforcement beam (100) is disposed between the outer threshold plate (200) and the inner threshold plate (300), and its two ends are respectively connected to the outer threshold plate (200) and the inner threshold plate (300).

9. The sill beam assembly as described in claim 8, characterized in that, The threshold outer panel (200) is configured as a steel outer panel; and / or, The inner sill plate (300) is made of steel.

10. A car, characterized in that, Includes the sill beam assembly as described in any one of claims 8-9.

Images