Front floor assembly for vehicle and vehicle

Abstract

The invention relates to the technical field of vehicles, in particular to a front floor assembly for a vehicle and the vehicle. The front floor assembly comprises an upper framework, a lower framework and a front floor, the upper framework comprises a middle channel and a first cross beam, the middle channel extends in the front-back direction of a vehicle, the first cross beam comprises a first sub-cross beam and a second sub-cross beam, the first sub-cross beam and the second sub-cross beam extend in the left-right direction of the vehicle, and the second sub-cross beam extends in the left-right direction of the vehicle. The middle channel is located between the first sub-beam and the second sub-beam, and the first sub-beam and the second sub-beam are both connected with the middle channel. The lower framework is located below the upper framework and corresponds to the middle channel in the vertical direction of the vehicle. The front floor is located between the upper framework and the lower framework in the vertical direction. The technical problems that a front floor is poor in structural strength and large in weight are solved, and the technical effects that the overall strength of a front floor assembly is improved, and the weight of the front floor assembly is reduced are achieved.

Description

Technical Field

[0001] The present application relates to the technical field of vehicles, and in particular to a front floor assembly for a vehicle and a vehicle. Background Art

[0002] In the related art, the front floor frame is divided into a central channel and multiple left and right cross beams, and the front floor is divided into left and right front floors. There are many connecting parts between the floor and the central channel and multiple cross beams, and between the floor frame and the front floor, and the connections are many and the sealing is complicated. The weight of the floor, the central channel and multiple cross beams after being overlapped is also heavy; the precision of the connection of multiple parts is poor, and the overall strength is also poor. Summary of the invention

[0003] The present application provides a front floor assembly for a vehicle and a vehicle, which solves the technical problems of poor structural strength and heavy weight of the front floor, and achieves the technical effect of improving the overall strength of the front floor assembly and reducing the weight of the front floor assembly.

[0004] In order to achieve the above objectives, the main technical solutions adopted in this application include:

[0005] In a first aspect, an embodiment of the present application provides a front floor assembly for a vehicle, comprising an upper frame, a lower frame and a front floor, the upper frame comprising a middle channel and a first cross beam, the middle channel extending along the front-rear direction of the vehicle, the first cross beam comprising a first sub-cross beam and a second sub-cross beam, along the left-right direction of the vehicle, the middle channel is located between the first sub-cross beam and the second sub-cross beam, and the first sub-cross beam and the second sub-cross beam are both connected to the middle channel; the lower frame is located below the upper frame, and along the up-down direction of the vehicle, the lower frame and the middle channel are arranged correspondingly; along the up-down direction, the front floor is located between the upper frame and the lower frame.

[0006] The front floor assembly for a vehicle proposed in the embodiment of the present application is an integral structure, arranged between the upper frame and the lower frame, reducing the number of connecting parts between the front floor and the middle channel and the first crossbeam, improving the connection strength between the front floor and the upper frame and the lower frame, while improving the overall strength of the front floor assembly, reducing costs. In addition, the first sub-crossbeam and the second sub-crossbeam of the first crossbeam are respectively located on the left and right sides of the middle channel and connected to the middle channel, thereby reducing the weight of the front floor assembly and achieving the purpose of lightweighting; at the same time, the force conduction path of the upper frame in the left and right directions is optimized.

[0007] Optionally, there are multiple first cross beams, which are spaced apart along the front-rear direction, and the middle channel and the multiple first cross beams are integrally formed. The multiple first cross beams are integrally formed with the middle channel, which reduces the number of connecting parts between the middle channel and the multiple first cross beams, improves the overall strength of the upper frame, and reduces the cost.

[0008] Optionally, the central channel includes a first top wall and a first left side wall and a first right side wall located on the left and right sides of the first top wall, and the first left side wall and the first right side wall define a first cavity. The central channel defines the first cavity, which is conducive to absorbing the collision force transmitted to the central channel, improving the energy absorption capacity of the central channel, and further improving the collision performance of the front floor assembly.

[0009] Optionally, the front floor assembly further includes a middle channel reinforcement beam, which is disposed above the middle channel and fixedly connected to the middle channel. In the up-down direction, the middle channel reinforcement beam is fixedly connected above the middle channel, and the collision force on the middle channel can be transmitted to the middle channel reinforcement beam, which is equivalent to adding a force transmission channel to the upper frame structure, thereby improving the energy absorption capacity and force transmission capacity of the upper frame.

[0010] Optionally, the middle channel reinforcement beam is at least partially separated from the middle channel to form a fourth cavity, thereby increasing the energy absorption cavity of the upper frame and improving the energy absorption capacity of the upper frame, thereby making the front floor assembly have better collision performance.

[0011] Optionally, the central channel reinforcement beam includes a fourth top wall and a fourth left side wall and a fourth right side wall located on the left and right sides of the fourth top wall, the fourth left side wall is connected to the first left side wall, the fourth right side wall is connected to the first right side wall, and the front section of the fourth top wall is spaced apart from the front section of the first top wall to form the fourth cavity. A distance is provided between the front end of the fourth top wall and the first top wall, so that a cavity structure is formed between the first top wall, the fourth left side wall, the fourth top wall and the fourth right side wall, thereby increasing the energy absorption chamber of the upper frame and improving the energy absorption capacity of the upper frame, thereby enabling the front floor assembly to have better force transmission performance and collision performance.

[0012] Optionally, along the front-to-back direction, the fourth top wall includes a first section and a second section, the first section is tilted relative to the second section, and along the direction from front to back, the distance between the first section and the second section in the up-down direction gradually decreases. At the front end of the middle channel, the cavity between the first top wall and the fourth top wall of the middle channel is larger, and the larger cavity has better energy absorption capacity; from front to back, the cavity between the first top wall and the fourth top wall of the middle channel gradually decreases, and the remaining collision force absorbed by the cavity between the first top wall and the fourth top wall is transmitted to the first cross beam and other parts of the vehicle body.

[0013] Optionally, the lower frame is fitted with the front floor, and along the up-down direction, the lower frame portion is spaced apart from the front floor to form a fifth cavity. The shape and structure of the lower frame can cooperate with the front floor to improve the overall structure of the front floor assembly. The fifth cavity is formed between the lower frame and the front floor, so that the front floor assembly can have better energy absorption capacity while improving the overall structure.

[0014] Optionally, the lower frame is provided with a second reinforcing rib, and along the up-down direction, the second reinforcing rib is recessed downward and spaced from the front floor to form the fifth cavity. The second reinforcing rib can enhance the strength of the lower frame, and the second reinforcing rib is recessed downward to lift the front floor assembly and improve the overall structure while having better energy absorption capacity.

[0015] Optionally, the first sub-cross beam defines a second cavity, the second sub-cross beam defines a third cavity, and the second cavity and the third cavity both extend in the left-right direction; wherein the second cavity is connected to the first cavity in the left-right direction, and the third cavity is connected to the first cavity in the left-right direction. This is beneficial for transmitting the collision force on the central channel to the multiple first sub-cross beams and multiple second sub-cross beams in the left-right direction of the vehicle, increasing the transmission path and improving the collision performance of the front floor assembly.

[0016] Optionally, a first through hole connecting the second cavity and the first cavity is provided on the first left side wall, and a second through hole connecting the third cavity and the first cavity is provided on the first right side wall. The first cavity, the second cavity and the third cavity are completely connected and integrally formed, which is conducive to the transmission of the collision force on the central channel from the first cavity to the multiple second cavities and multiple third cavities in the left and right directions of the vehicle, thereby improving the energy absorption capacity of the front floor assembly.

[0017] Optionally, the front floor assembly further includes a plurality of first reinforcing beams, each of which is connected to the corresponding first sub-cross beam and the corresponding second sub-cross beam, and the first reinforcing beam passes through the second cavity, the first cavity, and the third cavity in the left-right direction. Each first cross beam is provided with a corresponding first reinforcing beam, and the first reinforcing beam improves the strength of the upper frame in the left-right direction, and because the first reinforcing beam passes through the second cavity, the first cavity, and the third cavity in the left-right direction, the upper frame can have a better force conduction effect in the left-right direction.

[0018] Optionally, the first sub-crossbeam includes a second top wall and a first front side wall and a first rear side wall located on both sides of the second top wall, and the second sub-crossbeam includes a third top wall and a second front side wall and a second rear side wall located on both sides of the third top wall; the first reinforcing beam is fixedly connected to the second top wall and the third top wall respectively; the first reinforcing beam is also fixedly connected to the first top wall, the first left side wall and the first right side wall respectively. The first reinforcing beam is fixedly connected to the second top wall in the second cavity and fixedly connected to the third top wall in the third cavity, thereby enhancing the strength of the first crossbeam and improving the collision performance of the upper frame. The first reinforcing beam is also fixedly connected to the first top wall, the first left side wall and the first right side wall respectively, which can improve the overall strength of the upper frame, thereby improving the overall strength of the front floor assembly, thereby achieving the purpose of improving the collision performance of the front floor assembly.

[0019] Optionally, the front floor assembly further includes a plurality of second reinforcement beams, which are spaced apart along the left-right direction and separated from the middle channel, each of which is provided on the front floor, and which extend from the front of the front floor to the first cross beam along the front-back direction, and are connected to at least one of the first cross beams. The plurality of second reinforcement beams are spaced apart along the left-right direction and extend along the front-back direction to be fixedly connected to the first cross beam, thereby improving the overall strength of the front floor assembly. At the same time, the collision force in front of the vehicle is dispersed to the entire floor, reducing the concentration of the collision force, thereby improving the collision performance of the front floor assembly.

[0020] In a second aspect, an embodiment of the present application provides a vehicle, comprising the front floor assembly for a vehicle as described in any of the above embodiments.

[0021] In the vehicle provided in this embodiment, the collision force on the central channel can be transmitted to the left and right directions of the vehicle through the multiple first cross beams, and then transmitted to other body parts connected to the multiple first cross beams, thereby increasing the force transmission path, which is beneficial to improving the collision performance of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 This is an exploded view of the floor assembly before this application;

[0024] Figure 2 A top perspective view of the floor assembly before this application;

[0025] Figure 3 A bottom perspective view of the floor assembly before this application;

[0026] Figure 4 A partial bottom perspective view of the floor assembly before this application;

[0027] Figure 5 This is a bottom-up stereoscopic view of the upper skeleton of this application.

[0028] [Description of Reference Numerals]

[0029] 1: upper frame; 11: middle channel; 110: first cavity; 111: first top wall; 1111: first reinforcing rib; 112: first left side wall; 113: first right side wall; 12: first crossbeam; 121: first sub-crossbeam; 1210: second cavity; 1211: second top wall; 12111: fourth reinforcing rib; 1212: first front side wall; 1213: first rear side wall; 122: second sub-crossbeam; 1220: third cavity; 1221: third top wall; 12211: fifth reinforcing rib; 1222: second front side wall; 1223: second rear side wall; 13: first reinforcing beam; 131: third reinforcing rib;

[0030] 2: lower frame; 21: second reinforcement rib;

[0031] 3: front floor; 30: sixth cavity; 31: matching structure; 32: sixth reinforcement rib;

[0032] 4: middle channel reinforcement beam; 40: fourth cavity; 41: fourth top wall; 411: first section; 412: second section; 42: fourth left side wall; 43: fourth right side wall;

[0033] 5: Second reinforcing beam; A: Up and down direction; B: Front and back direction; C: Left and right direction. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0035] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0036] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0037] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" 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 elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0038] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0039] The term "multiple" as used in the present application refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple sheets" refers to more than two sheets (including two sheets).

[0040] At present, the front floor frame is divided into a central channel and multiple left and right cross beams, and the front floor is divided into left and right front floors. Among them, the central channel and multiple cross beams are independent and separate, and there are many connecting parts between the central channel and multiple cross beams and between the floor frame and the front floor. The connection is many and the sealing is complicated. The weight of the central channel and multiple cross beams after being overlapped is also heavy; the precision of multiple parts after connection is poor and the cost is high, and the overall strength of multiple parts connected by welding is also poor.

[0041] Therefore, it is necessary to develop a new front floor assembly that can reduce the number of connecting parts between the center channel and multiple cross beams, improve the overall strength of the center channel and multiple cross beams, and reduce the weight and cost of the front floor assembly. In view of this, the present application provides a front floor assembly for a vehicle and a vehicle.

[0042] In a first aspect, an embodiment of the present application provides a front floor assembly for a vehicle, referring to Figures 1 to 5 The front floor assembly includes an upper frame 1, a lower frame 2 and a front floor 3. The upper frame 1 includes a middle channel 11 and a first cross beam 12. The middle channel 11 extends along the front-rear direction B of the vehicle. The first cross beam 12 includes a first sub-cross beam 121 and a second sub-cross beam 122. Along the left-right direction C of the vehicle, the middle channel 11 is located between the first sub-cross beam 121 and the second sub-cross beam 122. The first sub-cross beam 121 and the second sub-cross beam 122 are both connected to the middle channel 11; the lower frame 2 is located below the upper frame 1, and along the up-down direction A, the lower frame 2 and the middle channel 11 are correspondingly arranged; along the up-down direction A, the front floor 3 is located between the upper frame 1 and the lower frame 2.

[0043] The first cross beam 12 includes a first sub-cross beam 121 and a second sub-cross beam 122, and along the left-right direction C, the first sub-cross beam 121 and the second sub-cross beam 122 are respectively located on the left and right sides of the middle channel 11, and the first sub-cross beam 121 and the second sub-cross beam 122 both extend along the left-right direction C of the vehicle. In other words, the left side of the middle channel 11 has a plurality of first sub-cross beams 121, and the right side of the middle channel 11 has a plurality of second sub-cross beams 122. The upper frame 1 is located above the front floor 3 and is connected to the middle channel 11 and the plurality of first sub-cross beams 121 and the plurality of second sub-cross beams 122, and the lower frame 2 is located below the front floor 3, and the lower frame 2 is arranged corresponding to the middle channel 11. The front floor 3 is sandwiched between the upper frame 1 and the lower frame 2. The front floor 3 is supported by the upper frame 1 and the lower frame 2 in the up and down directions. When a collision force is transmitted to the front floor assembly, the collision force is dispersed to the front floor 3, the upper frame 1 and the lower frame 2, reducing the probability of deformation or damage of the front floor assembly due to a large collision force, thereby improving the strength of the front floor assembly. The lower frame 2 provides support for the front floor 3 in the up and down direction A. When the collision force is transmitted to the front floor assembly, the front floor 3, the upper frame 1 and the lower frame 2 support each other, reducing the probability of separation between the components, thereby improving the connection strength of the front floor assembly.

[0044] In the front floor assembly for a vehicle proposed in the embodiment of the present application, the front floor 3 is an integral structure, which is arranged between the upper frame 1 and the lower frame 2, reducing the number of connecting parts between the front floor 3 and the middle channel 11 and the plurality of first cross beams 12, improving the connection strength between the front floor 3 and the upper frame 1 and the lower frame 2, and improving the overall strength of the front floor assembly, thereby reducing the cost. In addition, the first sub-cross beam 121 and the second sub-cross beam 122 of the first cross beam 12 are respectively located on the left and right sides of the middle channel 11 and connected to the middle channel 11. Compared with the first sub-cross beam 121 and the second sub-cross beam 122 being an integral part connected to the middle channel 11, the structure of the first cross beam 12 is still provided directly below the middle channel 11. In the present application, the first sub-cross beam 121 and the second sub-cross beam 122 are respectively located on the left and right sides of the middle channel 11, and the structure of the first cross beam 12 is not provided directly below the middle channel 11, thereby reducing the weight of the front floor assembly and achieving the purpose of lightweighting, while also optimizing the force conduction path of the upper frame 1 in the left and right directions.

[0045] Optionally, there are multiple first cross beams 12, and the multiple first cross beams 12 are spaced apart along the front-to-back direction B, and the middle channel 11 and the multiple first cross beams 12 are integrally formed. The middle channel 11 and the multiple first cross beams 12 of the upper frame 1 adopt an integrated structure, which reduces the connection structure between the middle channel 11 and the multiple first cross beams 12, reduces the number of connecting parts used and the number of welding points, saves about 10% of the tooling cost, improves the strength of the upper frame 1, improves the force transmission effect, and improves the assembly efficiency. At the same time, the integrated upper frame 1 structure reduces the overlap of the multiple first cross beams 12 and the middle channel 11, and can reduce the weight of the upper frame 1 by about 4Kg while meeting the same performance.

[0046] Optionally, refer to Figure 3 The middle channel 11 includes a first top wall 111 and a first left side wall 112 and a first right side wall 113 located on the left and right sides of the first top wall 111. The first left side wall 112 and the first right side wall 113 define a first cavity 110. The middle channel 11 defines the first cavity 110, and the first cavity 110 extends in the front-to-rear direction B, which is conducive to absorbing the collision force transmitted to the middle channel 11, improving the energy absorption capacity of the middle channel 11, and further improving the collision performance of the front floor assembly.

[0047] Optionally, refer to Figures 1 to 4 The front floor assembly further includes a central channel reinforcement beam 4, which is disposed above the central channel 11 and fixedly connected to the central channel 11. Along the up-down direction A, the central channel reinforcement beam 4 is fixedly connected above the central channel 11, and the collision force on the central channel 11 can be transmitted to the central channel reinforcement beam 4, which is equivalent to adding a force transmission channel to the structure of the upper frame 1, thereby improving the energy absorption capacity and force transmission capacity of the upper frame 1.

[0048] Optionally, the middle channel reinforcement beam 4 is at least partially separated from the middle channel 11 to form a fourth cavity 40. The middle channel reinforcement beam 4 is located above the middle channel 11 and forms the fourth cavity 40 with the first top wall 111 of the middle channel 11, thereby increasing the energy absorption chamber of the upper frame 1 and improving the energy absorption capacity of the upper frame 1, thereby making the front floor assembly have better collision performance.

[0049] In addition, since the middle channel reinforcement beam 4 is arranged above the middle channel 11, the cavity in the middle channel 11 will not be occupied, so that the wiring harness can pass through conveniently, and the middle channel reinforcement beam 4 will not interfere with the wiring harness in the cavity in the middle channel 11.

[0050] Optionally, the central channel reinforcement beam 4 includes a fourth top wall 41 and a fourth left side wall 42 and a fourth right side wall 43 located on the left and right sides of the fourth top wall 41, the fourth left side wall 42 is connected to the first left side wall 112, the fourth right side wall 43 is connected to the first right side wall 113, and the front section of the fourth top wall 41 is spaced apart from the front section of the first top wall 111 to form a fourth cavity 40. Specifically, there is a distance between the front end of the fourth top wall 41 and the first top wall 111, so that a cavity structure is formed between the first top wall 111, the fourth left side wall 42, the fourth top wall 41 and the fourth right side wall 43, thereby increasing the energy absorption chamber of the upper frame 1 and improving the energy absorption capacity of the upper frame 1, thereby making the front floor assembly have better force transmission performance and collision performance.

[0051] Optionally, refer to Figures 2 to 4 , along the front-to-back direction B, the fourth top wall 41 includes a first section 411 and a second section 412, the first section 411 is inclined relative to the second section 412, and the distance between the first section 411 and the second section 412 in the up-down direction A gradually decreases from the front to the back. Along the front-to-back direction B, the first section 411 is located at the front, and the second section 412 is located at the back, and an angle is formed between the first section 411 and the second section 412. Along the front-to-back direction B, the height of the first section 411 relative to the second section 412 gradually decreases, that is, from front to back, the height of the fourth left side wall 42 and the fourth right side wall 43 corresponding to the first section 411 along the up-down direction A gradually decreases. At the front end of the middle channel, the cavity between the first top wall 111 and the fourth top wall 41 of the middle channel 11 is relatively large, and the relatively large cavity has a better energy absorption capacity; from front to back, the cavity between the first top wall 111 and the fourth top wall 41 of the middle channel 11 gradually decreases, and the remaining collision force absorbed by the cavity between the first top wall 111 and the fourth top wall 41 is transmitted to the multiple first cross beams 12 and other parts of the vehicle body. In other words, the first top wall 111, the fourth left side wall 42, the fourth top wall 41 and the fourth right side wall 43 form a triangular cavity structure, and the triangular cavity structure improves the energy absorption capacity of the upper frame 1.

[0052] In a specific embodiment, the first top wall 111 of the middle channel 11 has a third section corresponding to the first section 411 and a fourth section corresponding to the second section 412, and an inclination angle of the third section relative to the horizontal plane is smaller than an inclination angle of the fourth section relative to the horizontal plane, so that the height of the front section of the middle channel 11 is not too high to affect the installation of the front floor assembly.

[0053] From front to rear, the height of the middle tunnel 11 along the vertical direction A tends to decrease. Since the collision force is continuously absorbed and dispersed during the transmission process, the force transmitted to the rear of the middle tunnel 11 gradually weakens. Therefore, the height of the middle tunnel 11 can be reduced to reduce the weight of the front floor assembly, thereby reducing costs.

[0054] Optionally, the lower frame 2 is fitted with the front floor 3, and along the up-down direction A, the lower frame 2 is partially separated from the front floor 3 to form a fifth cavity. Specifically, a matching structure 31 that fits with the first cavity 110 of the middle channel 11 is provided at the position where the front floor 3 is connected to the middle channel 11, and the matching structure 31 is protruding upward, and the lower frame 2 is located below the front floor 3 and fits with the front floor 3, that is, the shape structure of the lower frame 2 can match with the front floor 3 to improve the overall structure of the front floor assembly. The fifth cavity is formed between the lower frame 2 and the front floor 3, so that the front floor assembly can have better energy absorption capacity while improving the overall structure.

[0055] Optionally, the lower frame 2 is provided with a second reinforcing rib 21, and along the up-down direction A, the second reinforcing rib 21 is recessed downward and separated from the front floor 3 to form a fifth cavity. The second reinforcing rib 21 can enhance the strength of the lower frame 2, and the second reinforcing rib 21 recessed downward can improve the overall structure of the front floor assembly while having better energy absorption capacity. In addition, the upwardly protruding matching structure 31 of the front floor 3 forms a sixth cavity 30, which also makes the front floor assembly have better absorption capacity and improves the collision performance of the front floor assembly. A sixth reinforcing rib 32 is provided on the matching structure 31 of the front floor 3 to improve the structural strength of the front floor 3.

[0056] In a specific embodiment, the first left side wall 112 and the first right side wall 113 of the middle channel 11 both have a second flange facing away from the first cavity 110, the first front side wall 1212 and the first rear side wall 1213 of the plurality of first cross beams 12 have a third flange facing away from the second cavity 1210, and the second front side wall 1222 and the second rear side wall 1223 of the plurality of first cross beams 12 have a fourth flange facing away from the third cavity 1220. The flange structure of the middle channel 11 and the plurality of first cross beams 12 enables the connection between the middle channel 11 and the plurality of first cross beams 12 and the front floor 3 to have a rounded transition, so that the front floor assembly has a better force transmission effect.

[0057] Optionally, the first sub-beam 121 defines a second cavity 1210, and the second sub-beam 122 defines a third cavity 1220, and the second cavity 1210 and the third cavity 1220 both extend in the left-right direction C; wherein the second cavity 1210 is connected to the first cavity 110 in the left-right direction C, and the third cavity 1220 is connected to the first cavity 110 in the left-right direction C. The first cavity 110 defined by the middle channel 11 is connected to the second cavity 1210 defined by the first sub-beam 121 and the third cavity 1220 defined by the second sub-beam 122, and the middle channel 11, the first sub-beam 121 and the second sub-beam 122 are an integrated structure. That is to say, the first cavity 110 and the second cavity 1210 and the third cavity 1220 of a first cross beam 12 form a "cross" shaped cavity. Along the front-to-back direction B, the first cavity 110 and the second cavity 1210 and the third cavity 1220 of multiple second cross beams form multiple "cross" shaped cavities, which is beneficial for the collision force on the central channel 11 to be transmitted to the multiple first sub-cross beams 121 and the multiple second sub-cross beams 122 in the left-right direction C of the vehicle, thereby increasing the transmission path and improving the collision performance of the front floor assembly.

[0058] Optionally, refer to Figure 3 , a first through hole connecting the second cavity 1210 and the first cavity 110 is provided on the first left side wall 112, and a second through hole connecting the third cavity 1220 and the first cavity 110 is provided on the first right side wall 113. That is to say, along the up-down direction A, a notch extending from the bottom of the first left side wall 112 to the first top wall 111 is provided on the first left side wall 112, and the notch penetrates the first left side wall 112 along the up-down direction A to form a first through hole, and the first through hole connects the first cavity 110 and the second cavity 1210; along the up-down direction A, a notch extending from the bottom of the first right side wall 113 to the first top wall 111 is provided on the first right side wall 113, and the notch penetrates the first right side wall 113 along the up-down direction A to form a second through hole, and the second through hole connects the first cavity 110 and the third cavity 1220. The first cavity 110, the second cavity 1210 and the third cavity 1220 are completely connected and integrally formed, which is beneficial for the collision force on the central channel 11 to be transmitted from the first cavity 110 to the multiple second cavities 1210 and the multiple third cavities 1220 in the left and right direction C of the vehicle, thereby improving the energy absorption capacity of the front floor assembly.

[0059] Optionally, the front floor assembly further includes a plurality of first reinforcing beams 13, each of which is connected to the corresponding first sub-cross beam 121 and the corresponding second sub-cross beam 122, and the first reinforcing beam 13 passes through the second cavity 1210, the first cavity 110, and the third cavity 1220 along the left-right direction C. Each first reinforcing beam 13 passes through the second cavity 1210, the first cavity 110, and the third cavity 1220 in sequence along the left-right direction C, and each first reinforcing beam 13 is connected to the first sub-cross beam 121, the middle channel 11, and the second sub-cross beam 122 in sequence along the left-right direction C. In other words, each first cross beam 12 is provided with a corresponding first reinforcing beam 13, and the first reinforcing beam 13 improves the strength of the upper frame 1 along the left-right direction C, and because the first reinforcing beam 13 passes through the second cavity 1210, the first cavity 110, and the third cavity 1220 along the left-right direction C, the upper frame 1 can have a better force conduction effect in the left-right direction.

[0060] Optionally, refer to Figure 4 The first sub-crossbeam 121 includes a second top wall 1211 and a first front side wall 1212 and a first rear side wall 1213 located at the front and rear sides of the second top wall 1211. The second sub-crossbeam 122 includes a third top wall 1221 and a second front side wall 1222 and a second rear side wall 1223 located at the front and rear sides of the third top wall 1221. The first front side wall 1212 and the first rear side wall 1213 are respectively rounded to the first left side wall 112, and the second front side wall 1222 and the second rear side wall 1223 are respectively rounded to the first right side wall 113. The first front side wall 1212 is rounded to the first left side wall 112, the first rear side wall 1213 is rounded to the first left side wall 112, the second front side wall 1222 is rounded to the first right side wall 113, and the second rear side wall 1223 is rounded to the first right side wall 113, so that the transmission effect of the collision force between the middle channel 11 and the plurality of first crossbeams 12 is better.

[0061] Optionally, refer to Figure 4 and Figure 5 The first reinforcing beam 13 is fixedly connected to the second top wall 1211 and the third top wall 1221. The first reinforcing beam 13 is fixedly connected to the second top wall 1211 in the second cavity 1210 and is fixedly connected to the third top wall 1221 in the third cavity 1220, thereby enhancing the strength of the first cross beam 12 and improving the collision performance of the upper frame 1.

[0062] Optionally, the first reinforcing beam 13 is also fixedly connected to the first top wall 111, the first left side wall 112 and the first right side wall 113. Specifically, the first reinforcing beam 13 includes a bottom wall and side walls on both sides. Along the left-right direction C, the first reinforcing beam 13 extends from the second cavity 1210 to the first cavity 110 and the third cavity 1220, and is fixedly connected to the second top wall 1211 in the second cavity 1210, fixedly connected to the first top wall 111 in the first cavity 110, and fixedly connected to the third top wall 1221 in the third cavity 1220; the side walls of the first reinforcing beam 13 abut or are fixedly connected to the first front side wall 1212 and the first rear side wall 1213 in the second cavity 1210, abut or are fixedly connected to the first left side wall 112 and the first right side wall 113 in the first cavity 110, and are fixedly connected to the second front side wall 1222 and the second rear side wall 1223 in the third cavity 1220. The first reinforcing beam 13 is integrally fitted and fixedly connected to the first sub-crossbeam 121 , the middle channel 11 and the second sub-crossbeam 122 , thereby improving the overall strength of the upper frame 1 and further improving the overall strength of the front floor assembly, thereby achieving the purpose of improving the collision performance of the front floor assembly.

[0063] In a specific embodiment, the first reinforcing beam 13 has first flanges on both sides in the width direction, and the first flanges are abutted or fixedly connected to the first top wall 111 of the middle channel 11, thereby improving the connection strength between the upper frame 1 and the first reinforcing beam 13, thereby improving the collision performance of the upper frame 1.

[0064] In a specific embodiment, the first reinforcing beam 13 has a plurality of third reinforcing ribs 131 , which extend along the left-right direction C and are spaced apart along the left-right direction C, thereby improving the strength of the first reinforcing beam 13 and further improving the overall strength of the upper frame 1 .

[0065] In a specific embodiment, the number of the plurality of first beams 12 is two, the number of the first sub-beams 121 and the number of the second sub-beams 122 are both two, the two first sub-beams 121 are located on the left side of the middle channel 11, and the two second sub-beams 122 are located on the right side of the middle channel 11. The second cavity 1210 and the third cavity 1220 of the two first beams 12 are both provided with a first reinforcing beam 13, thereby improving the overall strength of the upper frame 1 and improving the force transmission effect of the upper frame 1.

[0066] Optionally, refer to Figure 1 , Figure 4 and Figure 5The front floor assembly also includes a plurality of second reinforcement beams 5, which are spaced apart along the left-right direction C and are spaced apart from the central channel 11. Each second reinforcement beam 5 is provided on the front floor 3, and along the front-back direction B, the second reinforcement beam 5 extends from the front of the front floor 3 to the first cross beam 12, and is connected to at least one first cross beam 12. The plurality of second reinforcement beams 5 are spaced apart along the left-right direction C, and extend along the front-back direction B to be fixedly connected to the first cross beam 12, thereby improving the overall strength of the front floor assembly. At the same time, the collision force in front of the vehicle is dispersed to the entire floor, reducing the concentration of the collision force, thereby improving the collision performance of the front floor assembly.

[0067] Specifically, there are two second reinforcing beams 5 and two first cross beams 12 . The second reinforcing beams 5 are located on the left and right sides of the central channel 11 . The second reinforcing beams 5 extend from the front end of the front floor 3 to the first cross beam 12 in front and are fixedly connected to the first cross beam 12 in front.

[0068] Optionally, the first top wall 111 is provided with a plurality of first reinforcing ribs 1111 that are raised and / or recessed relative to the first top wall 111 , the plurality of first reinforcing ribs 1111 are spaced apart along the left-right direction C and the front-back direction B, and each first reinforcing rib 1111 extends along the front-back direction B. The plurality of first reinforcing ribs 1111 enhance the strength of the middle channel 11 and improve the overall strength of the upper frame 1 .

[0069] Optionally, the second top wall 1211 is provided with a plurality of fourth reinforcing ribs 12111 protruding and / or recessed relative to the second top wall 1211, and the third top wall 1221 is provided with a plurality of fifth reinforcing ribs 12211 protruding and / or recessed relative to the third top wall 1221, and the plurality of fourth reinforcing ribs 12111 and the plurality of fifth reinforcing ribs 12211 are spaced apart along the left-right direction C, and each of the fourth reinforcing ribs 12111 and the fifth reinforcing ribs 12211 extends along the left-right direction C. The plurality of fourth reinforcing ribs 12111 and the plurality of fifth reinforcing ribs 12211 enhance the strength of the first crossbeam 12, and at the same time improve the overall strength of the upper frame 1.

[0070] In a second aspect, an embodiment of the present application provides a vehicle, including the front floor assembly for a vehicle described in any of the above embodiments. In the vehicle provided by this embodiment, the collision force on the central channel 11 can be transmitted to the left and right direction C of the vehicle through the multiple first cross beams 12, and then transmitted to other body parts connected to the multiple first cross beams 12, thereby increasing the force transmission path, which is conducive to improving the collision performance of the vehicle.

[0071] In the present application, the front floor 3 is an integral structure, which is arranged between the upper frame 1 and the lower frame 2, reducing the number of connecting parts between the front floor 3 and the middle channel 11 and the plurality of first cross beams 12, improving the connection strength between the front floor 3 and the upper frame 1 and the lower frame 2, and improving the overall strength of the front floor assembly, thereby reducing the cost. In addition, the middle channel 11 and the plurality of first cross beams 12 are an integral structure, and the first sub-cross beam 121 and the second sub-cross beam 122 of the first cross beam 12 are respectively located on the left and right sides of the middle channel 11 and are connected to the middle channel 11, thereby reducing the heavy weight of the front floor assembly caused by the overlap of the first cross beam 12 and the middle channel 11, thereby achieving the purpose of reducing the weight of the front floor assembly and achieving lightweight.

[0072] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0073] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0074] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

[0075] Although the embodiments of the present application have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present application, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A front floor assembly for a vehicle, characterized in that: include: An upper frame, the upper frame comprising a middle channel and a first cross beam, the middle channel extending along the front-rear direction of the vehicle, the first cross beam comprising a first sub-cross beam and a second sub-cross beam, along the left-right direction of the vehicle, the middle channel is located between the first sub-cross beam and the second sub-cross beam, and the first sub-cross beam and the second sub-cross beam are both connected to the middle channel; A lower frame, the lower frame is located below the upper frame, and along the up-down direction of the vehicle, the lower frame is arranged corresponding to the middle channel; A front floor is located between the upper frame and the lower frame along the up-down direction.

2. The front floor assembly for a vehicle according to claim 1, characterized in that: There are a plurality of the first cross beams, and the plurality of the first cross beams are spaced apart and distributed along the front-rear direction, and the middle channel and the plurality of the first cross beams are an integrally formed part.

3. The front floor assembly for a vehicle according to claim 1 or 2, characterized in that: The middle channel includes a first top wall and a first left side wall and a first right side wall located on the left and right sides of the first top wall, and the first left side wall and the first right side wall define a first cavity.

4. The front floor assembly for a vehicle according to claim 3, characterized in that: The front floor assembly also includes a central channel reinforcement beam, which is disposed above the central channel and fixedly connected to the central channel.

5. The front floor assembly for a vehicle according to claim 4, characterized in that: The central channel reinforcement beam is at least partially spaced apart from the central channel to form a fourth cavity.

6. The front floor assembly for a vehicle according to claim 5, characterized in that: The middle channel reinforcement beam includes a fourth top wall and a fourth left side wall and a fourth right side wall located on the left and right sides of the fourth top wall, the fourth left side wall is connected to the first left side wall, the fourth right side wall is connected to the first right side wall, and the front section of the fourth top wall is spaced apart from the front section of the first top wall to form the fourth cavity.

7. The front floor assembly for a vehicle according to claim 6, characterized in that: Along the front-to-back direction, the fourth top wall includes a first section and a second section, the first section is inclined relative to the second section, and along the direction from front to back, the distance between the first section and the second section in the up-down direction gradually decreases.

8. The front floor assembly for a vehicle according to claim 1, characterized in that: The lower frame is in contact with the front floor, and along the up-down direction, a portion of the lower frame is spaced apart from the front floor to form a fifth cavity.

9. The front floor assembly for a vehicle according to claim 8, characterized in that: The lower frame is provided with a second reinforcing rib, and along the up-down direction, the second reinforcing rib is recessed downward and is spaced apart from the front floor to form the fifth cavity.

10. The front floor assembly for a vehicle according to claim 3, characterized in that: The first sub-crossbeam defines a second cavity, the second sub-crossbeam defines a third cavity, and the second cavity and the third cavity both extend in the left-right direction; Wherein, the second cavity is communicated with the first cavity in the left-right direction, and the third cavity is communicated with the first cavity in the left-right direction.

11. The front floor assembly for a vehicle according to claim 10, characterized in that: A first via hole connecting the second cavity and the first cavity is disposed on the first left side wall, and a second via hole connecting the third cavity and the first cavity is disposed on the first right side wall.

12. The front floor assembly for a vehicle according to claim 10, characterized in that: The front floor assembly further includes a plurality of first reinforcement beams, each of which is connected to the corresponding first sub-cross beam and the corresponding second sub-cross beam, and the first reinforcement beam passes through the second cavity, the first cavity and the third cavity in the left-right direction.

13. The front floor assembly for a vehicle according to claim 12, characterized in that: The first sub-cross beam includes a second top wall and a first front side wall and a first rear side wall located on the front and rear sides of the second top wall; the second sub-cross beam includes a third top wall and a second front side wall and a second rear side wall located on the front and rear sides of the third top wall; the first reinforcing beam is fixedly connected to the second top wall and the third top wall respectively; the first reinforcing beam is also fixedly connected to the first top wall, the first left side wall and the first right side wall respectively.

14. The front floor assembly for a vehicle according to claim 1, characterized in that: It also includes a plurality of second reinforcing beams, which are spaced apart along the left-right direction and separated from the central channel, each of which is disposed on the front floor, and along the front-back direction, the second reinforcing beams extend from the front of the front floor to the first cross beam and are connected to at least one of the first cross beams.

15. A vehicle, characterized in that: A front floor assembly for a vehicle comprising any one of claims 1 to 14.

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