Threshold beam assembly, vehicle body assembly and vehicle

Abstract

The invention relates to the technical field of vehicles, in particular to a threshold beam assembly, a vehicle body assembly and a vehicle. The invention aims to solve the problem that the doorsill beam cannot give consideration to battery pack protection and light weight at the same time. In order to achieve the purpose, the doorsill beam assembly comprises a beam body which is an extrusion part, the beam body is in a long strip shape, and a plurality of containing cavities are formed in the beam body in the length direction; and the structural reinforcer is in a long strip shape, the length of the structural reinforcer is smaller than that of the beam body, and the structural reinforcer is arranged in one of the multiple containing cavities and connected with the beam body. According to the doorsill beam assembly, the structural reinforcing part is arranged in one containing cavity of the beam body, and the length of the reinforcing part is smaller than that of the beam body, so that protection of the battery pack and light weight of the doorsill beam can be both considered.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to a door sill beam component, a vehicle body assembly and a vehicle. Background Art

[0002] As the proportion of new energy vehicles in my country increases, there are more and more cases of battery fires caused by traffic accidents. As one of the core components of new energy vehicles, the battery pack is generally installed under the floor of the vehicle body. Due to its flammable and explosive properties, in safety collisions, especially side column collisions, it is necessary to minimize the impact on the battery pack to reduce the deformation of the battery cell and protect the safety of drivers and passengers and people at the accident site.

[0003] As for the side pillar collision, the component that can bear the collision energy absorption is mainly the threshold beam. There are two common schemes for the threshold beams of existing models. One is a stamping + welding single-cavity structure, and the other is an extruded aluminum multi-cavity structure. Since the stamping + welding single-cavity structure has no reinforcing ribs in the Y direction (body width direction), it cannot effectively absorb energy during the Y-direction side pillar collision, which is not conducive to the protection of the battery pack. The extruded aluminum threshold beam can realize a multi-cavity structure, and the wall thickness and number of the Y-direction reinforcing ribs are adjustable to meet the protection of the battery pack. However, since the threshold is very long, the extrusion is a single-section two-dimensional stretching process, which makes the extruded threshold very heavy, which not only affects the endurance of new energy vehicles, but also increases production costs.

[0004] Accordingly, the art needs a new technical solution to solve the above problems. Summary of the invention

[0005] In order to solve at least one of the above problems in the prior art, that is, to solve the problem that the threshold beam cannot take into account both battery pack protection and lightweight at the same time, the present application provides a threshold beam assembly, the threshold beam assembly comprising:

[0006] A beam body, which is an extruded part, is in a long strip shape and has a plurality of accommodating cavities formed inside along the length direction;

[0007] A structural reinforcement member is in the shape of an elongated strip and its length is less than the length of the beam body. The structural reinforcement member is arranged in one of the plurality of accommodating cavities and is connected to the beam body.

[0008] The threshold beam assembly of the present application can take into account both the protection of the battery pack and the lightness of the threshold beam by setting a structural reinforcement in a receiving cavity of the beam body, and the length of the reinforcement is less than the length of the beam body. Specifically, by setting the structural reinforcement, the energy generated by the collision of the side column can be absorbed by the structural reinforcement, the impact on the battery pack can be reduced, and the safety of the battery pack during the collision of the side column can be improved. Moreover, since the length of the structural reinforcement is short and it is specifically set in one of the receiving cavities, the setting of the reinforcing ribs can be reduced in other receiving cavities, and the wall thickness can be reduced. In this way, compared with the one-piece extruded threshold beam, the weight and cost can be greatly reduced.

[0009] In a preferred technical solution of the above-mentioned sill beam assembly, the beam body is formed with a first outer accommodating cavity and a first inner accommodating cavity, and the structural reinforcement is arranged in the first outer accommodating cavity.

[0010] The structural reinforcement is arranged in the first outer accommodating cavity, and can absorb the energy of the side column collision in the first time.

[0011] In the preferred technical solution of the above-mentioned sill beam assembly, the structural reinforcement is fixedly connected to the outer side wall.

[0012] The structural reinforcement is fixed on the outer side wall of the first outer side accommodating cavity, so that energy can be absorbed along with the deformation of the outer side wall of the first outer side accommodating cavity when the side pillar collides, thereby improving the energy absorption effect of the side pillar collision.

[0013] In the preferred technical solution of the above-mentioned door sill beam assembly, the structural reinforcement member is an extruded member, and a structural cavity is formed on the structural reinforcement member along its length direction.

[0014] In the preferred technical solution of the above-mentioned threshold beam assembly, the structural reinforcement member is an extruded aluminum alloy structural member or an extruded magnesium alloy structural member; and / or

[0015] The wall thickness of the structural reinforcement in the vehicle width direction is greater than the wall thickness in the vehicle height direction.

[0016] The arrangement mode in which the wall thickness of the structural reinforcement in the vehicle width direction is greater than the wall thickness in the vehicle height direction is beneficial to improving the energy absorption effect when the side column collides.

[0017] In the preferred technical solution of the above-mentioned sill beam assembly, a B-pillar connecting member is arranged in the structural cavity.

[0018] The B-pillar connector is arranged in the structural cavity to enhance the rigidity of the whole vehicle, strengthen the B-pillar under top pressure conditions, and avoid failure of the connection between the B-pillar and the door sill beam.

[0019] In the preferred technical solution of the above-mentioned rocker beam assembly, the structural cavity includes an inner structural cavity and an outer structural cavity, the B-pillar connecting member is arranged in the outer structural cavity and the two sides of the B-pillar connecting member along the vehicle width direction are respectively abutted against the two side walls of the outer structural cavity.

[0020] The two sides of the B-pillar connecting piece are respectively abutted against the two side walls of the outer structural cavity, which can enhance the connection strength.

[0021] In the preferred technical solution of the above-mentioned door sill beam assembly, the B-pillar connecting member is a threaded sleeve.

[0022] In the preferred technical solution of the above-mentioned door sill beam assembly, the structural reinforcement member is a metal foam material member.

[0023] Using metal foam material parts as structural reinforcement parts can reduce the weight of the threshold beam while achieving energy absorption effect.

[0024] In the preferred technical solution of the above-mentioned door sill beam assembly, a B-pillar connecting piece is pre-embedded in the metal foam material piece.

[0025] The B-pillar connector is arranged in the metal foam material part, so as to enhance the rigidity of the whole vehicle, strengthen the B-pillar in the top pressure condition, and avoid failure of the connection between the B-pillar and the door sill beam.

[0026] In the preferred technical solution of the above-mentioned sill beam assembly, an A-pillar outer panel connecting member is further provided in the first outer accommodating cavity.

[0027] In the preferred technical solution of the above-mentioned threshold beam assembly, a floor connecting member is arranged in the first inner accommodating cavity.

[0028] In a preferred technical solution of the above-mentioned sill beam assembly, two sides of the floor connecting member along the vehicle width direction are respectively abutted against two side walls of the first inner accommodating cavity.

[0029] The two sides of the floor connector are respectively in contact with the two side walls of the first inner accommodating cavity, which can enhance the rigidity of the entire vehicle and ensure the structural integrity under offset collision conditions.

[0030] In the preferred technical solution of the above-mentioned threshold beam assembly, the floor connecting member is a threaded sleeve.

[0031] In the preferred technical solution of the above-mentioned threshold beam assembly, the threaded sleeve includes a plurality of threaded tubes and a connecting plate connected between adjacent threaded tubes.

[0032] By arranging connecting plates between the threaded pipes, the connection strength between the connecting points can be mutually reinforced.

[0033] In the preferred technical solution of the above-mentioned sill beam assembly, the beam body is also formed with a second outer accommodating cavity and a second inner accommodating cavity, the second outer accommodating cavity is located at the lower side of the first outer accommodating cavity, the second inner accommodating cavity is located at the lower side of the first inner accommodating cavity, and an A-pillar inner panel connecting piece is arranged in the second inner accommodating cavity.

[0034] In a preferred technical solution of the above-mentioned threshold beam assembly, the beam body is further formed with a bottom accommodating cavity, and the bottom accommodating cavity is arranged at the lower side of the second outer accommodating cavity and the second inner accommodating cavity.

[0035] In the preferred technical solution of the above-mentioned threshold beam assembly, the beam body is an extruded aluminum alloy structural member.

[0036] The present application also provides a vehicle body assembly, which includes a sill beam assembly as described in any one of the above technical solutions.

[0037] The vehicle body assembly of the present application can take into account both the protection of the battery pack and the lightweighting of the sill beam by providing a sill beam assembly, thereby improving vehicle body safety and reducing vehicle body weight and production costs.

[0038] The present application also provides a vehicle, which includes the above-mentioned body assembly.

[0039] The vehicle of the present application, by adopting the above-mentioned body assembly, can take into account both the protection of the battery pack and the lightweighting of the door sill beam, thereby improving the safety and endurance of the vehicle. Solution 1. A threshold beam assembly, characterized in that the threshold beam assembly comprises: A beam body, which is an extruded part, is in a long strip shape and has a plurality of accommodating cavities formed inside along the length direction; A structural reinforcement member is in the shape of an elongated strip and its length is less than the length of the beam body. The structural reinforcement member is arranged in one of the plurality of accommodating cavities and is connected to the beam body. Solution 2. The threshold beam assembly according to Solution 1 is characterized in that the beam body is formed with a first outer accommodating cavity and a first inner accommodating cavity, and the structural reinforcement is arranged in the first outer accommodating cavity. Solution 3. The threshold beam assembly according to Solution 2 is characterized in that the structural reinforcement is fixedly connected to the outer side wall of the first outer accommodating cavity. Solution 4. The sill beam assembly according to Solution 1 is characterized in that the structural reinforcement is an extruded member, and a structural cavity is formed on the structural reinforcement along its length direction. Solution 5. The threshold beam assembly according to Solution 4 is characterized in that the structural reinforcement member is an extruded aluminum alloy structural member or an extruded magnesium alloy structural member; and / or The wall thickness of the structural reinforcement in the vehicle width direction is greater than the wall thickness in the vehicle height direction. Solution 6. The sill beam assembly according to Solution 4 is characterized in that a B-pillar connecting member is provided in the structural cavity. Solution 7. The rocker beam assembly according to Solution 6 is characterized in that the structural cavity includes an inner structural cavity and an outer structural cavity, the B-pillar connecting member is arranged in the outer structural cavity and the two sides of the B-pillar connecting member along the vehicle width direction are respectively abutted against the two side walls of the outer structural cavity. Solution 8. The threshold beam assembly according to Solution 6 is characterized in that the B-pillar connecting member is a threaded sleeve. Solution 9. The sill beam assembly according to Solution 1 is characterized in that the structural reinforcement member is a metal foam material member. Solution 10. The threshold beam assembly according to Solution 9 is characterized in that a B-pillar connecting piece is pre-embedded in the metal foam material piece. Solution 11. The sill beam assembly according to Solution 2 is characterized in that an A-pillar outer panel connecting piece is also provided in the first outer accommodating cavity. Solution 12. The threshold beam assembly according to Solution 2 is characterized in that a floor connecting member is provided in the first inner accommodating cavity. Solution 13. The sill beam assembly according to Solution 12 is characterized in that the two sides of the floor connecting member along the vehicle width direction are respectively abutted against the two side walls of the first inner accommodating cavity. Solution 14. The threshold beam assembly according to Solution 12 is characterized in that the floor connecting member is a threaded sleeve. Solution 15. The threshold beam assembly according to Solution 8 or 14 is characterized in that the threaded sleeve includes a plurality of threaded tubes and a connecting plate connected between adjacent threaded tubes. Solution 16. The threshold beam assembly according to Solution 2 is characterized in that the beam body is also formed with a second outer accommodating cavity and a second inner accommodating cavity, the second outer accommodating cavity is located at the lower side of the first outer accommodating cavity, the second inner accommodating cavity is located at the lower side of the first inner accommodating cavity, and an A-pillar inner panel connecting piece is arranged in the second inner accommodating cavity. Solution 17. The threshold beam assembly according to Solution 16 is characterized in that the beam body is also formed with a bottom accommodating cavity, and the bottom accommodating cavity is arranged at the lower side of the second outer accommodating cavity and the second inner accommodating cavity. Solution 18. The threshold beam assembly according to Solution 1 is characterized in that the beam body is an extruded aluminum alloy structural member. Option 19. A vehicle body assembly, characterized in that the vehicle body assembly includes a rocker beam assembly according to any one of Options 1 to 18. Option 20. A vehicle, characterized in that the vehicle includes the body assembly described in Option 19. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The present application is described below with reference to the accompanying drawings. In the accompanying drawings:

[0041] Figure 1 A structural diagram of the threshold beam assembly of the present application;

[0042] Figure 2 A side cross-sectional view of a threshold beam assembly of the present application;

[0043] Figure 3 A structural diagram of a beam body, a structural reinforcement and a B-pillar connecting member in a sill beam assembly of the present application;

[0044] Figure 4 A structural diagram of a structural reinforcement member and a B-pillar connecting member in a sill beam assembly of the present application;

[0045] Figure 5 This is a structural diagram of a threaded sleeve in a threshold beam assembly of the present application.

[0046] Reference numerals list

[0047] 1. Beam body; 11. First outer accommodating cavity; 12. First inner accommodating cavity; 13. Second outer accommodating cavity; 14. Second inner accommodating cavity; 15. Bottom accommodating cavity; 2. Structural reinforcement; 21. Inner structural cavity; 22. Outer structural cavity; 3. B-pillar connector; 4. A-pillar outer panel connector; 5. A-pillar inner panel connector; 6. Floor connector; 7. Threaded sleeve; 71. Threaded pipe; 72. Connecting plate; 8. Battery bracket. DETAILED DESCRIPTION

[0048] The preferred embodiments of the present application are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present application and are not intended to limit the scope of protection of the present application. For example, although the beam body in the accompanying drawings is illustrated by combining the example of five accommodating cavities, the arrangement of the beam body is not static, and those skilled in the art can adjust it as needed to adapt to specific application scenarios. For example, the beam body can also be provided with any number of accommodating cavities, such as two, three, four, or six, according to specific needs.

[0049] It should be noted that, in the description of the present application, the terms "upper", "lower", "vertical", "horizontal", "inside", "outside" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are merely for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance. In addition, in the description of the present application, "multiple" refers to at least two.

[0050] In addition, it should be noted that in the description of this application, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0051] First refer to Figure 1 , a brief introduction to the threshold beam assembly of the present application is given.

[0052] like Figure 1 As shown, in order to solve the problem that the threshold beam cannot take into account both battery pack protection and lightweight at the same time, the threshold beam assembly of the present application includes a beam body 1 and a structural reinforcement 2. The beam body 1 is an extruded part, and the beam body 1 is long and has multiple accommodating cavities formed inside along the length direction. The structural reinforcement 2 is long and its length is less than that of the beam body 1. The structural reinforcement 2 is arranged in one of the multiple accommodating cavities and is connected to the beam body 1.

[0053] In a possible application scenario, the length of the structural reinforcement 2 is less than the length of the beam body 1, and is equal to or slightly greater than the length of the new energy vehicle battery pack (referring to the size of the battery in the length direction of the vehicle). The structural reinforcement 2 is set in one of the accommodating cavities of the beam body 1, and the accommodating cavity corresponds to the battery pack of the new energy vehicle in the height direction of the vehicle. That is to say, after being set, the structural reinforcement 2 corresponds to the height of the battery pack in the height direction and corresponds to the length of the battery pack in the length direction. In this way, during the collision of the side pillar, the sill beam is deformed by the collision to absorb the collision energy, and the structural reinforcement 2 is deformed during the collision to absorb the collision energy.

[0054] It can be seen that the threshold beam assembly of the present application can take into account both the protection of the battery pack and the lightweighting of the threshold beam by setting a structural reinforcement 2 in a receiving cavity of the beam body 1, and the length of the reinforcement is less than the length of the beam body 1. Specifically, the conventional threshold beam is formed by integral extrusion, which not only has a longer length of the beam, but also connects from the A-pillar to the C-pillar of the vehicle, and in order to increase the collision energy absorption effect, the cavity is provided with many Y-direction (vehicle width direction) reinforcement ribs, and the wall thickness is large. However, the present application can achieve the decoupling of the collision energy absorption function and the overall structural connection function by setting a structural reinforcement 2 in the receiving cavity of the beam body 1, that is, the connection function of the vehicle is realized by the beam body 1, and the energy generated by the collision of the side column is absorbed by the structural reinforcement 2, reducing the impact on the battery pack and improving the safety of the battery pack when the side column collides. And because the length of the structural reinforcement 2 is short and is specifically set in one of the receiving cavities, the setting of reinforcement ribs can be reduced in other receiving cavities, and the wall thickness can be reduced, so that the weight and cost can be greatly reduced compared with the integral extruded threshold beam.

[0055] Combine the following Figures 1 to 5 , a specific implementation of the threshold beam assembly of the present application is introduced.

[0056] like Figures 1 to 5 As shown, in a specific embodiment, the rocker beam assembly includes a beam body 1 and a structural reinforcement 2 .

[0057] See also Figure 1 and Figure 2 The beam body 1 is in the shape of an elongated strip and is an extruded aluminum alloy structural member. Five accommodating chambers are formed inside it, namely, a first outer accommodating chamber 11, a first inner accommodating chamber 12, a second outer accommodating chamber 13, a second inner accommodating chamber 14 and a bottom accommodating chamber 15. The first outer accommodating chamber 11 and the first inner accommodating chamber 12 are arranged along the width direction of the vehicle, and when installed on the vehicle body, the first outer accommodating chamber 11 is located on the outer side of the vehicle body, and the first inner accommodating chamber 12 is located on the inner side of the vehicle body. The second outer accommodating chamber 13 is located on the lower side of the first outer accommodating chamber 11, the second inner accommodating chamber 14 is located on the lower side of the first inner accommodating chamber 12, and the bottom accommodating chamber 15 is arranged on the lower side of the second outer accommodating chamber 13 and the second inner accommodating chamber 14.

[0058] See also Figure 2 and Figure 3 The structural reinforcement 2 is an elongated and extruded component. More specifically, the structural reinforcement 2 is an extruded aluminum alloy structural component. The structural reinforcement 2 is disposed in the first outer accommodating cavity 11 and is fixedly connected to the outer wall of the first outer accommodating cavity 11 (i.e., the side wall facing the outer side of the vehicle body in the installed state) by means of blind rivets or FDS (self-tightening bolt technology). After being connected, the structural reinforcement 2 is approximately located in the middle of the beam body 1. Figure 4, the structural reinforcement member 2 is integrally in an inverted "day" shape, and a structural cavity is formed along the length direction of the structural reinforcement member 2. The structural cavity includes an inner structural cavity 21 and an outer structural cavity 22. Among them, in the installed state, the inner structural cavity 21 is close to the inner side of the vehicle body, and the outer structural cavity 22 is close to the outer side of the vehicle body. In a specific setting mode, the wall thickness of the structural reinforcement member 2 in the vehicle width direction is greater than its wall thickness in the vehicle height direction. Taking Figure 4 the direction shown as an example, that is, the thickness of the upper wall and the lower wall of the structural reinforcement member 2 extending in the horizontal direction is greater than the thickness of the three side walls extending in the vertical direction.

[0059] Referring to Figure 2 and Figure 4 , a B-pillar connecting member 3 is arranged in the structural cavity. Specifically, the B-pillar connecting member 3 is arranged in the outer structural cavity 22, and both sides of the B-pillar connecting member 3 in the vehicle width direction are respectively abutted against the two side walls of the outer structural cavity 22. In this application, the B-pillar connecting member 3 is a threaded sleeve 7, and the threaded sleeve 7 is fixed in the outer structural cavity 22 by means of indentation fixation. Among them, the specific structure of the threaded sleeve 7 will be specifically introduced below.

[0060] Returning to refer to Figure 1 and Figure 2 , an A-pillar outer panel connecting member 4 is also arranged in the first outer accommodation cavity 11, and an A-pillar inner panel connecting member 5 is arranged in the second inner accommodation cavity 14. The two are respectively used to provide connection points for the A-pillar outer panel and the A-pillar inner panel of the vehicle. More specifically, both the A-pillar outer panel connecting member 4 and the A-pillar inner panel connecting member 5 are nut plates, and the nut plates are connected in the corresponding accommodation cavities by blind rivets. Among them, the A-pillar outer panel connecting member 4 is connected to the outer side wall of the first outer accommodation cavity 11, and the A-pillar inner panel connecting member 5 is connected to the outer side wall (the side wall close to the inner side of the vehicle body) of the second inner accommodation cavity 14.

[0061] Continuing to refer to Figure 1 and Figure 2 , a floor connecting member 6 is arranged in the first inner accommodation cavity 12. The floor connecting member 6 is used to provide a connection point for the floor of the vehicle. Specifically, the floor connecting member 6 also adopts a threaded sleeve 7, and the threaded sleeve 7 is fixed in the first inner accommodation cavity 12 by means of indentation fixation, and both sides of the threaded sleeve 7 in the vehicle width direction are respectively abutted against the two side walls of the first inner accommodation cavity 12. In addition, a battery bracket 8 is connected to the outside of the second inner accommodation cavity 14, and the battery pack is fixedly connected to the battery bracket 8. After installation, the side surface of the battery pack is approximately flush with the height of the structural reinforcement member 2.

[0062] Referring to Figure 5The threaded sleeve 7 includes a plurality of threaded tubes 71 and a connecting plate 72 connected between adjacent threaded tubes 71. In the present application, the threaded sleeve 7 includes two threaded tubes 71 and a connecting plate 72 connected between the two threaded tubes 71. In a specific embodiment, the threaded tube 71 is integrally formed with the connecting plate 72.

[0063] Usually, the connection between the B-pillar and the threshold beam adopts the combination of FDS + structural adhesive, but this connection form has poor shear resistance under top pressure conditions. However, the present application adopts the B threaded sleeve 7 as the B-pillar connector 3, so that the shear resistance of the threaded tube 71 and the B-pillar is greatly improved after being connected by bolts, thereby avoiding failure of the connection between the B-pillar and the threshold beam. The two sides of the B-pillar connector 3 are respectively abutted against the two side walls of the outer structural cavity 22, which can enhance the connection strength.

[0064] Furthermore, the prior art sets a nut plate in the door sill beam to connect the floor, but the overall strength of the nut plate is poor. The threaded sleeve 7 is used as the floor connector 6, and the two sides are respectively abutted against the two side walls of the first inner accommodating cavity 12. Compared with the prior art, the rigidity of the entire vehicle can be enhanced to ensure the structural integrity under offset collision conditions.

[0065] In addition, in the above specific embodiment, the structural reinforcement 2 is fixed to the outer wall of the first outer accommodating cavity 11, which can absorb energy as the outer wall of the first outer accommodating cavity 11 deforms when the side column collides, thereby improving the energy absorption effect of the side column collision. The wall thickness of the structural reinforcement 2 in the vehicle width direction is greater than its wall thickness in the vehicle height direction, which is conducive to improving the energy absorption effect when the side column collides. By arranging the connecting plate 72 between the threaded tubes 71, the connection strength between the connection points can be mutually reinforced, further improving the connection strength.

[0066] It should be noted that the above preferred implementations are only used to illustrate the principles of the present application and are not intended to limit the scope of protection of the present application. Without departing from the principles of the present application, those skilled in the art may adjust the above settings so that the present application can be applied to more specific application scenarios.

[0067] For example, in an alternative embodiment, although the above embodiment is described in combination with the example of the structural reinforcement 2 being arranged in the first outer accommodating cavity 11, this is only an exemplary solution, as long as the structural reinforcement 2 is arranged in one of the multiple accommodating cavities and the structural reinforcement 2 can effectively resist the collision and absorb the collision energy when the side column collides. For example, the structural reinforcement 2 can also be arranged in the first inner accommodating cavity 12 or the second outer accommodating cavity 13, but its energy absorption effect will be weakened accordingly.

[0068] For another example, in another alternative embodiment, the structural reinforcement member 2 being disposed on the outer sidewall of the first outer accommodation cavity 11 is merely a possible connection method. In other embodiments, the structural reinforcement member 2 can also be fixedly connected to any sidewall of the first outer accommodation cavity 11.

[0069] For another example, in another alternative embodiment, in addition to the pressing member, the structural reinforcement member 2 can also be made of other forms of workpieces. For example, the structural reinforcement member 2 can be a metal foam material member. More specifically, it can be a foam aluminum material member or a foam magnesium material member, etc. Using a metal foam material member as the structural reinforcement member 2 can reduce the weight of the sill beam while achieving the energy absorption effect. Further, when using a metal foam material member, the B-pillar connecting member 3 can be embedded in the structural reinforcement member 2, which can also strengthen the overall vehicle stiffness, strengthen the B-pillar in the roof crush condition, and avoid the connection failure between the B-pillar and the sill beam.

[0070] For another example, in another alternative embodiment, when the structural reinforcement member 2 is an extrusion member, using an extruded aluminum alloy structural member is merely a possible embodiment, and those skilled in the art can replace it. For example, an extruded magnesium alloy structural member can also be used.

[0071] For another example, in another alternative embodiment, the setting of the B-pillar connecting member 3 is not necessary. Those skilled in the art can choose whether to set the B-pillar connecting member 3 and the setting position of the B-pillar connecting member 3 based on the specific application scenario, and such adjustment does not deviate from the principle of this application.

[0072] For another example, in another alternative embodiment, although the specific structural form of the structural reinforcement member 2 is described by taking the inverted "日" character as an example, the specific structural form of the structural reinforcement member 2 is not unique, and those skilled in the art can adjust it. For example, its cross-section can also be in the shape of a "口" character, "目" character, "田" character, etc. In addition, the thickness relationship of the sidewalls of the structural reinforcement member 2 is not limited to that introduced in the above embodiments, and those skilled in the art can also adjust it. However, in the setting where the wall thickness of the structural reinforcement member 2 in the vehicle width direction is greater than its wall thickness in the vehicle height direction, it is more beneficial to improve the energy absorption effect.

[0073] For another example, in another alternative embodiment, the B-pillar connecting member 3 and the floor connecting member 6 using the threaded sleeve 7 is merely a possible embodiment. In other embodiments, those skilled in the art can use other connection structures for replacement, and such replacement does not deviate from the principle of this application. For example, those skilled in the art can replace at least one of the above two components with a nut plate.

[0074] For another example, in another replaceable embodiment, although the above embodiment is described in conjunction with the sill beam assembly including the A-pillar outer panel connector 4 and the A-pillar inner panel connector 5, this is only applicable to a vehicle model that has both an A-pillar inner panel and an A-pillar outer panel. When the A-pillar structure of the vehicle model is adjusted, technical personnel in this field can make corresponding adjustments to the A-pillar outer panel connector 4 and the A-pillar inner panel connector 5, for example, at least one of the above two components can be omitted.

[0075] For another example, the provision of the floor connector 6 is only one possible implementation mode, and those skilled in the art may also selectively omit the provision of the floor connector 6 and instead fix the floor of the vehicle at other positions.

[0076] For another example, in another alternative embodiment, the specific structure of the threaded sleeve 7 is not limited to the above-mentioned two threaded tubes 71 connected by a connecting plate 72. Those skilled in the art can adjust the specific structure of the threaded sleeve 7 based on the needs so that the present application is applicable to more specific application scenarios. For example, the number of threaded tubes 71 in the threaded sleeve can be adjusted, and the structure of the connecting plate 72 can also be adjusted, such as adjusting it to a connecting rod, or setting a plurality of connecting plates 72. For another example, the threaded sleeve 7 can also include only the threaded tube 71, and omit the connecting plate 72. Of course, such a setting is not conducive to enhancing the connection strength between the threaded tubes 71.

[0077] For example, although the above implementation is introduced in conjunction with the example of the beam body 1 being an extruded aluminum alloy structural member, the specific setting method of the beam body 1 is not fixed. Technical personnel in this field can make adjustments based on needs and adjust the extruded aluminum alloy to other metal extrusions.

[0078] Of course, the above-mentioned replaceable implementations, as well as the replaceable implementations and the preferred implementations, can be used in a cross-coordinated manner to combine new implementations to suit more specific application scenarios.

[0079] The present application also provides a vehicle body assembly, which includes a threshold beam assembly according to any one of the above technical solutions.

[0080] The vehicle body assembly of the present application can take into account both the protection of the battery pack and the lightweighting of the sill beam by providing a sill beam assembly, thereby improving vehicle body safety and reducing vehicle body weight and production costs.

[0081] The present application also provides a vehicle, which includes the above-mentioned body assembly.

[0082] The vehicle of the present application, by adopting the above-mentioned body assembly, can take into account both the protection of the battery pack and the lightweighting of the door sill beam, thereby improving the safety and endurance of the vehicle.

[0083] Those skilled in the art will appreciate that, although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present application and form different embodiments. For example, in the claims of the present application, any one of the claimed embodiments may be used in any combination.

[0084] So far, the technical solutions of the present application have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present application is obviously not limited to these specific embodiments. Without departing from the principles of the present application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present application.

Claims

1. A threshold beam assembly, characterized in that: The threshold beam assembly comprises: A beam body, which is an extruded part, is in a long strip shape and has a plurality of accommodating cavities formed inside along the length direction; A structural reinforcement member is in the shape of an elongated strip and its length is less than the length of the beam body. The structural reinforcement member is arranged in one of the plurality of accommodating cavities and is connected to the beam body.

2. The sill beam assembly according to claim 1, characterized in that: The beam body is formed with a first outer accommodating cavity and a first inner accommodating cavity, and the structural reinforcement is arranged in the first outer accommodating cavity.

3. The sill beam assembly according to claim 2, characterized in that: The structural reinforcement is fixedly connected to the outer side wall of the first outer accommodating cavity.

4. The sill beam assembly according to claim 1, characterized in that: The structural reinforcement member is an extruded member, and a structural cavity is formed along the length direction of the structural reinforcement member.

5. The sill beam assembly according to claim 4, characterized in that: The structural reinforcement member is an extruded aluminum alloy structural member or an extruded magnesium alloy structural member; and / or The wall thickness of the structural reinforcement in the vehicle width direction is greater than the wall thickness in the vehicle height direction.

6. The sill beam assembly according to claim 4, characterized in that: A B-pillar connecting piece is arranged in the structural cavity.

7. The sill beam assembly according to claim 6, characterized in that: The structural cavity comprises an inner structural cavity and an outer structural cavity, the B-pillar connecting member is arranged in the outer structural cavity, and the two sides of the B-pillar connecting member along the vehicle width direction are respectively abutted against the two side walls of the outer structural cavity.

8. The sill beam assembly according to claim 6, characterized in that: The B-pillar connecting piece is a threaded sleeve.

9. The sill beam assembly according to claim 1, characterized in that: The structural reinforcement member is a metal foam material member.

10. The sill beam assembly according to claim 9, characterized in that: A B-pillar connecting piece is pre-embedded in the metal foam material piece.

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