CN221809789U - Reinforced beam assembly of vehicle and vehicle thereof - Google Patents

Abstract

The application relates to a reinforcement beam assembly of a vehicle and the vehicle thereof, comprising a first reinforcement beam, wherein the first reinforcement beam comprises a first cross beam, a first reinforcement beam and a first joint, the length direction of the first cross beam is intersected with the length direction of the first reinforcement beam, the first cross beam is connected with the floor of the vehicle, the first reinforcement beam is connected with an inner wheel cover of the vehicle, and the first joint is connected between the first cross beam and the first reinforcement beam along the length direction of the first cross beam; wherein the cross-sectional area of the first joint gradually decreases from the side of the first reinforcement beam toward the side of the first cross beam. The reinforcement beam body assembly of the vehicle and the vehicle thereof can avoid stress concentration of the first reinforcement beam body to a certain extent; the occupation of the first cross beam on the space in the vehicle can be reduced.

Description

Reinforced beam assembly of vehicle and vehicle thereof

Technical Field

The present application belongs to the technical field of automobile equipment, and specifically relates to a reinforced beam assembly of a vehicle and a vehicle thereof.

Background Art

The torsional stiffness of the vehicle body is an indicator to measure the overall stiffness of the vehicle body. It directly reflects the overall stiffness level of the vehicle body. Higher torsional stiffness improves the overall resistance of the vehicle body to torsional deformation, and can better maintain the comfort, stable handling and passive safety of the vehicle. Therefore, the body structure needs to be strengthened.

The C-ring structure has a great influence on the torsional stiffness of the vehicle body. However, more and more car companies are designing the lower body of the vehicle to be relatively flat in pursuit of larger storage and passenger space. This makes it difficult to optimize the layout of the C-ring structure, which in turn affects the torsional stiffness of the vehicle body.

Utility Model Content

The purpose of the present application is to provide a vehicle reinforcement beam assembly and a vehicle thereof, which can not only avoid stress concentration of the first reinforcement beam to a certain extent, but also reduce the space occupied by the first cross beam in the vehicle.

The first aspect of the present application discloses a reinforcing beam assembly of a vehicle, including a first reinforcing beam, wherein the first reinforcing beam includes a first cross beam, a first reinforcing beam and a first joint, wherein the length direction of the first cross beam intersects with the length direction of the first reinforcing beam, the first cross beam is connected to the floor of the vehicle, the first reinforcing beam is connected to the inner wheel cover of the vehicle, and the first joint is connected between the first cross beam and the first reinforcing beam along the length direction of the first cross beam; wherein the cross-sectional area of the first joint gradually decreases from one side of the first reinforcing beam toward one side of the first cross beam.

In an exemplary embodiment of the present application, the first joint includes a first connection portion, a second connection portion and an intermediate connection portion, and the first connection portion and the second connection portion are arranged opposite to the intermediate connection portion along the width direction of the first beam; the spacing value between the first connection portion and the second connection portion gradually decreases from one side of the first reinforcing beam toward one side of the first beam.

In an exemplary embodiment of the present application, the intermediate connecting portion includes an upper plate portion and a lower plate portion, the upper plate portion and the first connecting portion are an integral structure, and the lower plate portion and the second connecting portion are an integral structure; the upper plate portion is stacked on the lower plate portion and are connected to each other.

In an exemplary embodiment of the present application, the upper plate portion and the lower plate portion each include a first plate segment, a second plate segment and an arcuate plate segment sequentially arranged along the length direction of the first crossbeam, and the arcuate plate segment is connected between the first plate segment and the second plate segment.

In an exemplary embodiment of the present application, the first connecting portion and the second connecting portion each include at least one arc segment along the length direction of the first crossbeam.

In an exemplary embodiment of the present application, both the intermediate connection portion and the first connection portion are provided with weight-reducing holes.

In an exemplary embodiment of the present application, the first crossbeam includes a top plate portion, a first side plate portion and a second side plate portion spaced apart from each other, the first side plate portion and the second side plate portion are arranged opposite to each other and connected to the top plate portion; the angle between the plate surface of the first side plate portion and the plate surface of the top plate portion is greater than 90°; the angle between the plate surface of the second side plate portion and the plate surface of the top plate portion is greater than 90°.

In an exemplary embodiment of the present application, the reinforcing beam assembly also includes a second reinforcing beam body spaced apart from the first reinforcing beam body, and the second reinforcing beam body is arranged opposite to the first reinforcing beam body; wherein the second reinforcing beam body includes a second cross beam, a second reinforcing beam and a second joint, the length direction of the second cross beam intersects with the length direction of the second reinforcing beam, the second cross beam is connected to the floor of the vehicle, the second reinforcing beam is connected to the inner wheel cover of the vehicle, and the second joint is connected between the second cross beam and the second reinforcing beam along the length direction of the second cross beam.

The second aspect of the present application discloses a vehicle, including a vehicle body and the reinforcing beam assembly, wherein the vehicle body includes a floor and an inner wheel cover, the inner wheel cover is connected to the floor, and the first reinforcing beam is connected to the inner wheel cover and the floor.

In an exemplary embodiment of the present application, the vehicle body further includes a seat, and the seat is connected to the first reinforcing beam.

This application scheme has the following beneficial effects:

In the embodiment of the present application, the first joint is connected between the first reinforcing beam and the first cross beam, and the cross section of the end of the first joint connected to the first reinforcing beam is larger than the cross section of the end connected to the first cross beam. The first joint can absorb most of the torsional deformation transmitted from the inner wheel cover to the first reinforcing beam, and then transmit it to the floor and the first cross beam. Therefore, the first joint can avoid stress concentration on the first reinforcing beam body to a certain extent. At the same time, after the first reinforcing beam is connected to the first cross beam through the first joint, the torsional deformation force transmitted to the first cross beam is small, and there is no need to increase the cavity of the first cross beam to resist the torsional deformation, thereby reducing the space occupied by the first cross beam in the vehicle.

It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application.

BRIEF DESCRIPTION OF THE DRAWINGS

The drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present application, and together with the specification, are used to explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and for ordinary technicians in this field, other drawings can also be obtained based on these drawings without creative work. Among them, the drawings here are used to represent the utility model concept of the present application, and are not completely equivalent to the structure of the actual product protected by the present application.

FIG. 1 shows a schematic diagram of the assembly structure of the reinforced beam assembly in an embodiment of the present application.

FIG. 2 is a schematic diagram of a three-dimensional structure of an integral body formed by the first connecting portion and the upper plate portion in an embodiment of the present application.

FIG3 is a schematic diagram of a three-dimensional structure of an integral body formed by the second connecting portion and the lower plate portion in an embodiment of the present application.

FIG. 4 shows a schematic diagram of the three-dimensional structure of the first crossbeam in an embodiment of the present application.

FIG. 5 is a schematic diagram showing the front view structure of the first crossbeam in an embodiment of the present application.

FIG. 6 shows a schematic diagram of the top view of the structure of the first crossbeam in an embodiment of the present application.

FIG7 shows a schematic diagram of the cross-sectional structure of the first beam A-A in FIG6 of the embodiment of the present application.

FIG8 shows a schematic diagram of the three-dimensional structure of the second joint in an embodiment of the present application.

FIG. 9 shows a schematic diagram of the three-dimensional structure of the second crossbeam in an embodiment of the present application.

Description of reference numerals:

1. First reinforcing beam body; 101. First mounting hole; 102. Second mounting hole; 103. Weight reduction hole; 11. First cross beam; 111. Top plate; 112. First side plate; 112a. Transverse section; 112b. Vertical section; 113. Second side plate; 12. First reinforcing beam; 13. First joint; 131. First connecting part; 132. Second connecting part; 133. Middle connecting part; 1331. Upper plate; 1332. Lower plate; 2. Second reinforcing beam body; 21. Second cross beam; 22. Second reinforcing beam; 23. Second joint; 231. First connecting plate; 232. Second connecting plate; 233. Middle connecting plate; 3. Inner wheel cover; 4. Floor; a. First flange; b. Second flange; c. First plate section; d. Second plate section; e. Arc plate section.

DETAILED DESCRIPTION

Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this application will be more comprehensive and complete and fully convey the concept of example embodiments to those skilled in the art.

In addition, described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present application. However, those skilled in the art will appreciate that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, devices, steps, etc. can be adopted. In other cases, known methods, devices, realizations or operations are not shown or described in detail to avoid blurring the various aspects of the present application.

The present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the technical features involved in the various embodiments of the present application described below can be combined with each other as long as they do not conflict with each other. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be understood as limiting the present application.

As shown in Figures 1 to 9, this embodiment provides a reinforcing beam assembly of a vehicle, including a first reinforcing beam 1, the first reinforcing beam 1 including a first cross beam 11, a first reinforcing beam 12 and a first joint 13, the length direction of the first cross beam 11 intersects with the length direction of the first reinforcing beam 12, the first cross beam 11 is connected to the floor 4 of the vehicle, the first reinforcing beam 12 is connected to the inner wheel cover 3 of the vehicle, and the first joint 13 is connected between the first cross beam 11 and the first reinforcing beam 12 along the length direction of the first cross beam 11; wherein, the cross-sectional area of the first joint 13 gradually decreases from one side of the first reinforcing beam 12 toward one side of the first cross beam 11.

In this embodiment, the first joint 13 is connected between the first reinforcing beam 12 and the first cross beam 11, and the cross section of the end of the first joint 13 connected to the first reinforcing beam 12 is larger than the cross section of the end connected to the first cross beam 11. The first joint 13 can absorb most of the torsional deformation transmitted from the inner wheel cover 3 to the first reinforcing beam 12, and then transmit it to the floor 4 and the first cross beam 11. Therefore, the first joint 13 can avoid stress concentration of the first reinforcing beam body 1 to a certain extent. At the same time, after the first reinforcing beam 12 is connected to the first cross beam 11 through the first joint 13, the torsional deformation force transmitted to the first cross beam 11 is small, and there is no need to increase the cavity of the first cross beam 11 to resist the torsional deformation, thereby reducing the occupation of the first cross beam 11 in the vehicle interior.

As shown in Figures 1 to 3, the first joint 13 includes a first connection portion 131, a second connection portion 132 and an intermediate connection portion 133. The first connection portion 131 and the second connection portion 132 are arranged relative to the intermediate connection portion 133 along the width direction of the first beam 11; the spacing between the first connection portion 131 and the second connection portion 132 gradually decreases from one side of the first reinforcing beam 12 toward one side of the first beam 11.

In this embodiment, a first flange a is provided at one end of the first connection portion 131 away from the middle connection portion 133, and the first flange a is connected to the inner wheel cover 3 and the floor 4; a second flange b is provided at one end of the second connection portion 132 away from the middle connection portion 133, and the second flange b is connected to the inner wheel cover 3 and the floor 4. The first flange a can ensure the rigidity of the connection between the first connection portion 131 and the inner wheel cover 3 and the floor 4, and the second flange b can ensure the rigidity of the connection between the second connection portion 132 and the inner wheel cover 3 and the floor 4, thereby ensuring the rigidity of the connection between the first joint 13 and the inner wheel cover 3 and the floor 4.

1 to 3 , the middle connection portion 133 includes an upper plate portion 1331 and a lower plate portion 1332 . The upper plate portion 1331 and the first connection portion 131 are an integral structure, and the lower plate portion 1332 and the second connection portion 132 are an integral structure. The upper plate portion 1331 is stacked on the lower plate portion 1332 and are connected to each other.

In this embodiment, the first joint 13 is composed of an integral body formed by an upper plate portion 1331 and a first connecting portion 131, and an integral body formed by a lower plate portion 1332 and a second connecting portion 132. The first joint 13 is configured as two parts, which can reduce the precision error of the first joint 13 during assembly and avoid assembly difficulties. The intermediate connecting portion 133 includes an upper plate portion 1331 and a lower plate portion 1332 that are interconnected. The upper plate portion 1331 and the lower plate portion 1332 can increase the rigidity of the intermediate connecting portion 133, thereby increasing the rigidity of the first joint 13 to enhance the torsional rigidity of the vehicle body.

In this embodiment, in combination with Figures 1 to 3, the upper plate portion 1331 and the lower plate portion 1332 are both provided with a plurality of first mounting holes 101 spaced apart from each other, and bolts are passed through the first mounting holes 101 to be connected to the first reinforcing beam 12. The bolt connection is used to ensure that the upper plate portion 1331 and the lower plate portion 1332 can fit tightly with the first reinforcing beam 12, thereby ensuring that the first joint 13 and the first reinforcing beam 12 remain tightly connected to change the transmission path of the torsional deformation; the first connection portion 131 and the second connection portion 132 are connected to the first reinforcing beam 12 by welding to ensure the connection strength between the first joint 13 and the first reinforcing beam 12.

In addition, the lower plate portion 1332 is also provided with a second mounting hole 102, the first mounting hole 101 and the second mounting hole 102 are arranged at intervals, and the bolts pass through the second mounting hole 102 to connect with the first reinforcing beam 12. The bolt connection method is used to ensure that the lower plate portion 1332 can fit tightly with the first reinforcing beam 12, which is beneficial for the first joint 13 to change the transmission path of torsional deformation.

1 to 3 , the upper plate portion 1331 and the lower plate portion 1332 each include a first plate segment c, a second plate segment d and an arcuate plate segment e sequentially arranged along the length direction of the first cross beam 11 , and the arcuate plate segment e is connected between the first plate segment c and the second plate segment d.

In this embodiment, the first plate segment c is used to connect to the first reinforcing beam 12, the second plate segment d is used to connect to the first cross beam 11, and the arcuate plate segment e connects the first plate segment c with the second plate segment d. The arcuate plate segment e can change the transmission path of the torsional deformation, prevent stress concentration, and reduce the probability of cracking or deformation of the upper plate portion 1331 and the lower plate portion 1332.

It should be understood that since a certain angle is set between the inner wheel cover 3 and the floor 4, the first joint 13 needs to connect the first reinforcing beam 12 with the first cross beam 11, and the upper plate portion 1331 and the lower plate portion 1332 need to fit with the first reinforcing beam 12 and the first cross beam 11 respectively. Therefore, the upper plate portion 1331 and the lower plate portion 1332 both include a first plate segment c and a second plate segment d, the first plate segment c is connected to the inner wheel cover 3, and the second plate segment d is connected to the first cross beam 11, and the arc-shaped plate segment e connects the first plate segment c and the second plate segment d to form the upper plate portion 1331 and the lower plate portion 1332.

In this embodiment, in combination with Figures 1 to 3, the first connection portion 131 and the second connection portion 132 each include at least one arc segment along the length direction of the first beam 11. The arc segment changes the spacing value between the first connection portion 131 and the second connection portion 132, thereby changing the transmission path of the torsional deformation and preventing stress concentration, so that the first joint 13 has excellent ability to resist torsional deformation and strength stress level.

In this embodiment, as shown in FIG. 2 and FIG. 3 , both the intermediate connection portion 133 and the first connection portion 131 are provided with a weight-reducing hole 103 . The weight-reducing hole 103 can reduce the weight of the components and prevent stress concentration.

4 to 7 , the first beam 11 includes a top plate 111 , a first side plate 112 and a second side plate 113 spaced apart from each other. The first side plate 112 and the second side plate 113 are disposed opposite to each other and connected to the top plate 111 .

In this embodiment, the first side plate portion 112 includes a transverse section 112a and a vertical section 112b, the vertical section 112b is connected to the top plate portion 111, and the transverse section 112a is connected to the floor 4 by welding to ensure the welding strength between the first cross beam 11 and the floor 4.

Further, in combination with FIGS. 4 to 7 , the angle between the plate surface of the vertical section 112 b and the plate surface of the top plate portion 111 is greater than 90°; the angle between the plate surface of the second side plate portion 113 and the plate surface of the top plate portion 111 is greater than 90°.

For example, the angle between the plate surface of the vertical section 112b and the plate surface of the top plate portion 111 can be 91°, 95°, 100°, 105°, 110°, 115°, 120°, etc.; the angle between the plate surface of the second side plate portion 113 and the plate surface of the top plate portion 111 can be 91°, 95°, 100°, 105°, 110°, 115°, 120°, etc.

In this embodiment, the angle between the plate surface of the vertical section 112b and the plate surface of the top plate portion 111 is 115°, and the angle between the plate surface of the second side plate portion 113 and the plate surface of the top plate portion 111 is 108°, so as to ensure the ability of the first beam 11 to resist torsional stiffness.

In addition, the angle between the plate surface of the second side plate portion 113 and the horizontal plane is 52°, so as to ensure the ability of the first cross beam 11 to resist torsional rigidity.

In this embodiment, the first side plate portion 112 is connected to the first connection portion 131, the second side plate portion 113 is connected to the second connection portion 132, and the top plate portion 111 is connected to the lower plate portion 1332. The angle between the plate surface of the second connection portion 132 and the plate surface of the second plate segment d of the lower plate portion 1332 is 108°, so as to ensure that the first cross beam 11 and the first joint 13 can be matched and connected.

It should be understood that in order to ensure that the second connecting portion 132 can fit together with the second side plate portion 113, and that the plate surface of the second plate segment d of the lower plate portion 1332 can fit together with the top plate portion 111, the angle between the plate surface of the second connecting portion 132 and the plate surface of the second plate segment d of the lower plate portion 1332 is set to 108°.

In this embodiment, the angle between the plate surface of the first connection portion 131 and the plate surface of the first flange a is 110°, so as to ensure that the first reinforcing beam 11 and the first joint 13 can be matched and connected.

As shown in FIG. 1 , the reinforcement beam assembly further includes a second reinforcement beam 2 spaced apart from the first reinforcement beam 1 , and the second reinforcement beam 2 is disposed opposite to the first reinforcement beam 1 .

In this embodiment, the second reinforcing beam 2 is arranged opposite to the first reinforcing beam 1, and the second reinforcing beam 2 can further enhance the torsional stiffness of the vehicle body, and thus the first reinforcing beam 1 and the second reinforcing beam 2 can ensure that the vehicle body has a higher torsional stiffness to ensure the overall torsional deformation resistance of the vehicle body.

Specifically, the second reinforcing beam 2 can increase the torsional stiffness of the body in white by 2500 Nm/deg and the torsional mode by 1.2 Hz, effectively improving the driving experience and excellent handling performance of the body under low-speed, high-speed and bad-road driving conditions.

It should be understood that when driving at low speeds, high torsional stiffness can maintain the overall stability of the vehicle body and better resist the load impact from bad roads; when driving at high speeds, high torsional stiffness can better maintain the stability of the vehicle body posture to obtain a good handling and driving experience; when driving on curved roads, high torsional stiffness can ensure good vehicle body following performance and better cornering control.

Further, in combination with Figures 1, 8 and 9, the second reinforcing beam body 2 includes a second cross beam 21, a second reinforcing beam 22 and a second joint 23. The length direction of the second cross beam 21 intersects with the length direction of the second reinforcing beam 22. The second cross beam 21 is connected to the floor 4 of the vehicle, the second reinforcing beam 22 is connected to the inner wheel cover 3 of the vehicle, and the second joint 23 is connected between the second cross beam 21 and the second reinforcing beam 22 along the length direction of the second cross beam 21.

As shown in Figures 1 and 8, the second joint 23 includes a first connecting plate 231, a second connecting plate 232 and an intermediate connecting plate 233. The first connecting plate 231 and the second connecting plate 232 are arranged relative to the intermediate connecting plate 233 along the width direction of the first cross beam 11. The first connecting plate 231 and the second connecting plate 232 are both connected to the floor 4 and the inner wheel cover 3.

In this embodiment, the first cross beam 11 and the first joint 13 are connected to the floor assembly of the vehicle by spot welding, and the first reinforcing beam 12 is connected to the side panel assembly of the vehicle by welding; finally, the middle connecting portion 133 is connected to the first reinforcing beam 12 by bolts passing through the first mounting hole 101 and the second mounting hole 102, and the first connecting portion 131 and the second connecting portion 132 are connected to the first reinforcing beam 12 by welding, so that the first joint 13 is connected to the first reinforcing beam 12, thereby completing the assembly of the side panel assembly and the floor assembly.

The second cross beam 21 and the second joint 23 are connected to the floor assembly of the vehicle by spot welding, and the second reinforcing beam 22 is connected to the side panel assembly of the vehicle by welding; finally, the middle connecting plate 233 is connected to the second reinforcing beam 22 by bolts, and the first connecting plate 231 and the second connecting plate 232 are connected to the second reinforcing beam 22 by welding, so that the second joint 23 is connected to the second reinforcing beam 22, thereby completing the assembly of the side panel assembly and the floor assembly.

It should be understood that the inner wheel cover 3 includes a left inner wheel cover and a right inner wheel cover, and both the left inner wheel cover and the right inner wheel cover are provided with a first reinforcing beam 12 and a second reinforcing beam 22. Therefore, both ends of the first cross beam 11 are provided with a first joint 13 to connect with the first reinforcing beam 12 connected to the left inner wheel cover and the first reinforcing beam 12 connected to the right inner wheel cover; both ends of the second cross beam 21 are provided with a second joint 23 to connect with the second reinforcing beam 22 connected to the left inner wheel cover and the second reinforcing beam 22 connected to the right inner wheel cover.

In this embodiment, in order to reduce the space occupied in the vehicle, the thickness of the first cross beam 11 is 1.2 mm, the thickness of the first reinforcement beam 12 is 1.8 mm, and the thickness of the first joint 13 is 2 mm; the thickness of the second cross beam 21 is 1.4 mm, the thickness of the second reinforcement beam 22 is 1 mm, and the thickness of the second joint 23 is 1.2 mm.

This embodiment also provides a vehicle, including a vehicle body and the above-mentioned reinforcing beam assembly, the vehicle body includes a floor 4 and an inner wheel cover 3, the inner wheel cover 3 is connected to the floor 4, and the first reinforcing beam 1 is connected to the inner wheel cover 3 and the floor 4.

In this embodiment, the second reinforcing beam 2 is connected to the inner wheel housing 3 and the floor 4, and is spaced apart from the first reinforcing beam 1 along the wheelbase direction of the vehicle body. The first reinforcing beam 1 and the second reinforcing beam 2 can not only change the transmission path of the torsional deformation and avoid overly concentrated stress distribution, but also improve the torsional rigidity of the vehicle body, so that the overall load-bearing capacity of the vehicle body is better under the condition of variable load, and the durability and reliability of the whole vehicle are effectively improved.

In this embodiment, the vehicle body also includes a seat, which is connected to the first cross beam 11 of the first reinforcing beam body 1. The first cross beam 11 can not only be used to install the seat, but also absorb part of the torsional deformation.

It should be understood that since the first joint 13 is installed between the first reinforcing beam 12 and the first cross beam 11, the first joint 13 reduces the torsional deformation transmitted to the first cross beam 11, and there is no need to set the cavity of the first cross beam 11 larger to resist the torsional deformation, thereby reducing the space occupied by the first cross beam 11 in the vehicle and increasing the space for installing seats, which can both increase the function of the seats and improve the riding comfort.

In this application, unless otherwise clearly specified and limited, the terms "assembly", "connection" and the like 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 mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. "Multiple" means two or more, unless otherwise clearly and specifically defined. And the description of the terms "some embodiments", "exemplarily", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application.

The schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without contradicting each other.

Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application. Therefore, any changes or modifications made in accordance with the claims and description of the present application should fall within the scope of the patent of this application.

Claims (10)

1. A reinforcing beam assembly for a vehicle, characterized in that it comprises a first reinforcing beam, the first reinforcing beam comprising a first cross beam, a first reinforcing beam and a first joint, the length direction of the first cross beam intersects with the length direction of the first reinforcing beam, the first cross beam is connected to the floor of the vehicle, the first reinforcing beam is connected to the inner wheel cover of the vehicle, and the first joint is connected between the first cross beam and the first reinforcing beam along the length direction of the first cross beam; wherein, The cross-sectional area of the first joint gradually decreases from one side of the first reinforcing beam toward one side of the first cross beam. 2. The reinforced beam assembly according to claim 1, characterized in that the first joint comprises a first connection portion, a second connection portion and an intermediate connection portion, and the first connection portion and the second connection portion are arranged opposite to the intermediate connection portion along the width direction of the first cross beam; The distance between the first connection portion and the second connection portion gradually decreases from one side of the first reinforcing beam toward one side of the first cross beam. 3. The reinforced beam assembly according to claim 2, characterized in that the intermediate connecting portion comprises an upper plate portion and a lower plate portion, the upper plate portion and the first connecting portion are an integral structure, and the lower plate portion and the second connecting portion are an integral structure; The upper plate portion is stacked on the lower plate portion and connected to each other. 4. The reinforced beam assembly according to claim 3 is characterized in that the upper plate portion and the lower plate portion both include a first plate segment, a second plate segment and an arc-shaped plate segment which are sequentially arranged along the length direction of the first cross beam, and the arc-shaped plate segment is connected between the first plate segment and the second plate segment. 5 . The reinforced beam assembly according to claim 2 , wherein the first connecting portion and the second connecting portion each include at least one arc segment along the length direction of the first cross beam. 6. The reinforced beam assembly according to claim 2, characterized in that both the intermediate connecting portion and the first connecting portion are provided with weight-reducing holes. 7. The reinforced beam assembly according to claim 1, characterized in that the first cross beam comprises a top plate portion, a first side plate portion and a second side plate portion spaced apart from each other, the first side plate portion is disposed opposite to the second side plate portion and connected to the top plate portion; The angle between the plate surface of the first side plate portion and the plate surface of the top plate portion is greater than 90°; An angle between a plate surface of the second side plate portion and a plate surface of the top plate portion is greater than 90°. 8. The reinforcing beam assembly according to claim 1, characterized in that the reinforcing beam assembly further comprises a second reinforcing beam spaced apart from the first reinforcing beam, the second reinforcing beam being arranged opposite to the first reinforcing beam; wherein, The second reinforcing beam body includes a second cross beam, a second reinforcing beam and a second joint, the length direction of the second cross beam intersects with the length direction of the second reinforcing beam, the second cross beam is connected to the floor of the vehicle, the second reinforcing beam is connected to the inner wheel cover of the vehicle, and the second joint is connected between the second cross beam and the second reinforcing beam along the length direction of the second cross beam. 9. A vehicle, characterized in that it comprises a vehicle body and the reinforcing beam assembly according to any one of claims 1 to 8, wherein the vehicle body comprises a floor and an inner wheel cover, the inner wheel cover is connected to the floor, and the first reinforcing beam is connected to the inner wheel cover and the floor. 10 . The vehicle according to claim 9 , wherein the vehicle body further comprises a seat, and the seat is connected to the first reinforcing beam.