Floor frame and vehicle

Abstract

The application relates to the technical field of vehicles, and provides a floor frame and a vehicle, which can solve the problems of safety protection and space optimization of the floor frame. The floor frame comprises a peripheral structure, a beam structure and a longitudinal beam structure, the peripheral structure forms the peripheral contour of the floor frame; the beam structure comprises a seat front beam and a seat rear beam extending along a first direction, the two ends of the seat front beam and the seat rear beam are connected with the peripheral structure, an empty area is arranged between the seat front beam and the seat rear beam, and the empty area can be used to arrange a power battery at least; the longitudinal beam structure comprises a front middle longitudinal beam and a rear middle longitudinal beam extending along a second direction, the second direction has an included angle with the first direction, the front middle longitudinal beam is arranged on one side of the empty area close to the seat front beam, and the front middle longitudinal beam is connected with the seat front beam and the peripheral structure; and the rear middle longitudinal beam is arranged on one side of the empty area close to the seat rear beam, and the rear middle longitudinal beam is connected with the seat rear beam and the peripheral structure.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and more particularly to a floor frame and vehicle. Background Technology

[0002] Vehicles are machines powered by fuel, electricity, etc., used to carry people or goods. Safety performance and NVH performance are important design indicators for vehicles. As an important load-bearing component of the vehicle structure, the design of the floor beam structure directly affects the vehicle's safety and NVH performance.

[0003] In related technologies, the floor frame structure has defects, resulting in insufficient energy absorption efficiency and unstable deformation under collision conditions, which poses safety hazards and has poor vehicle compatibility. Utility Model Content

[0004] To address the aforementioned technical problems, this application provides a floor frame and vehicle that can improve the protective performance of the floor frame and optimize the spatial layout.

[0005] In a first aspect, this application provides a floor frame, including an outer structure, a crossbeam structure, and a longitudinal beam structure. The outer structure forms the outer contour of the floor frame. The crossbeam structure includes a front seat crossbeam and a rear seat crossbeam extending along a first direction. The two ends of the front seat crossbeam and the rear seat crossbeam are respectively connected to the outer structure. An empty area is provided between the front seat crossbeam and the rear seat crossbeam, and the empty area can at least accommodate a power battery. The longitudinal beam structure includes a front middle longitudinal beam and a rear middle longitudinal beam extending along a second direction. The second direction forms an angle with the first direction. The front middle longitudinal beam is located on the side of the empty area near the front seat crossbeam and is respectively connected to the front seat crossbeam and the outer structure. The rear middle longitudinal beam is located on the side of the empty area near the rear seat crossbeam and is respectively connected to the rear seat crossbeam and the outer structure.

[0006] The floor frame provided in this application has an outer structure forming its outer contour. Both the crossbeam and longitudinal beam structures are located within the outer structure. The crossbeam structure includes a front seat crossbeam and a rear seat crossbeam extending along a first direction, used for mounting the seat. An empty area is provided between the front and rear seat crossbeams, where the vehicle's power battery can be installed. The longitudinal beam structure includes a front center longitudinal beam and a rear center longitudinal beam extending along a second direction. The front center longitudinal beam connects the front seat crossbeam and the outer structure, and the rear center longitudinal beam connects the rear seat crossbeam and the outer structure. When the vehicle suffers an external impact, part of the impact energy is transmitted and dispersed through the outer structure, while the remaining portion is dispersed and absorbed through the front and rear center longitudinal beams. The impact energy can be efficiently dispersed and released, thus providing effective protection for the power battery and the passengers in the seat. Furthermore, the power battery is located below the seat, effectively utilizing the space under the seat and facilitating its installation to ensure compatibility with different vehicle models. Compared with the three-horizontal and four-vertical floor frame in related technologies, the floor frame of this application embodiment can effectively buffer impact force, improve vehicle safety performance, and optimize the power battery layout to adapt to different vehicle models.

[0007] In some implementations, there are at least two front center longitudinal beams, which are symmetrically distributed about the central axis of the floor frame along the second direction.

[0008] In some implementations, the beam structure also includes a connecting beam that extends along a first direction and connects to two front center longitudinal beams at both ends along the first direction.

[0009] In some implementations, there are at least two rear center longitudinal beams, which are symmetrically distributed about the central axis of the floor frame along the second direction.

[0010] In some implementations, two adjacent front longitudinal beams have a first spacing along a first direction, and two adjacent rear longitudinal beams have a second spacing along the first direction, wherein the second spacing is less than or equal to the first spacing.

[0011] In some implementations, the floor frame also includes a floor body and a mounting beam for mounting the power battery; a first reinforcing cavity is formed between the seat rear beam and the floor body, and a second reinforcing cavity is formed between the mounting beam and the floor body, with the first and second reinforcing cavities being arranged relative to the floor body.

[0012] In some implementations, a third reinforcing cavity is formed between the rear crossbeam of the seat and the floor body. An installation space is provided on the side of the floor body away from the rear crossbeam of the seat, corresponding to the empty area. The installation space is at least large enough to accommodate the power battery. The third reinforcing cavity and the installation space are positioned relative to the floor body.

[0013] In some implementations, the peripheral structure includes a front crossbeam, a floor front crossbeam, and two sill beams, the sill beams having a first end and a second end arranged along a second direction; the two ends of the front crossbeam are respectively connected to the two first ends, the two ends of the floor front crossbeam are respectively connected to the two second ends, the two ends of the seat front crossbeam are respectively connected to the two sill beams, and the two ends of the seat rear crossbeam are respectively connected to the two sill beams.

[0014] In some implementations, the outer structure also includes two floor longitudinal beams extending along the second direction. The two ends of the floor longitudinal beams are connected to the front crossbeam and the front floor crossbeam, respectively, and the front middle longitudinal beam is connected to the floor longitudinal beam on the corresponding side. The floor longitudinal beams are located between the two threshold beams, and the empty area is located between the two floor longitudinal beams.

[0015] Secondly, this application provides a vehicle including the floor frame of the first aspect, with an idle area disposed therein; or, the vehicle further includes a power battery disposed in the idle area.

[0016] The vehicle described in this application includes a floor frame. The crossbeam and longitudinal beam structures of the floor frame can effectively buffer impact forces, improve vehicle safety performance, and optimize the power battery layout to adapt to different vehicle models. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the vehicle structure according to an embodiment of this application; Figure 2 This is a schematic diagram of the floor frame structure according to an embodiment of this application; Figure 3 This is a schematic diagram of the floor frame and power battery according to an embodiment of this application; Figure 4 This is a schematic diagram of the impact energy transfer path of the floor frame in an embodiment of this application; Figure 5 Examples of this application Figure 2 A schematic diagram of the cross-sectional structure of AA in the middle section; Figure 6 Examples of this application Figure 2 A schematic diagram of the cross-sectional structure of BB; Figure 7 This is a schematic diagram of the floor frame and vehicle body according to an embodiment of this application.

[0020] Explanation of reference numerals in the attached figures: 100 - Peripheral structure; 110 - Front crossbeam; 120 - Front floor crossbeam; 130 - Sill beam; 140 - Floor longitudinal beam; 200 - Crossbeam structure; 210 - Front seat crossbeam; 220 - Rear seat crossbeam; 221 - First reinforcing cavity; 222 - Third reinforcing cavity; 230 - Connecting beam; 300 - Longitudinal beam structure; 310 - Front middle longitudinal beam; 320 - Rear middle longitudinal beam; 400 - Empty area; 500 - Floor body; 600 - Mounting crossbeam; 610 - Second reinforcing cavity; 700 - Power battery; Y - First direction; X - Second direction; W1 - First spacing; W2 - Second spacing. Detailed Implementation

[0021] To better understand the above-mentioned objectives, features, and advantages of this application, the solution of this application will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of this application, but this application may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some embodiments of this application, and not all embodiments.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0024] In the description of the embodiments of this application, technical terms such as "first," "second," and "third" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0025] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0026] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects are in an "or" relationship.

[0027] In the description of the embodiments of this application, the technical terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed, operated or used in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0028] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0029] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical term "contact" should be interpreted broadly, and can be direct contact, contact through an intermediate medium layer, contact between two contacting parties with substantially no interaction force, or contact between two contacting parties with interaction force.

[0030] The following is a detailed description of this application.

[0031] This application provides a vehicle, which is a machine powered by fuel, electricity, or the like, used to transport people or goods. The vehicle can be a sedan, SUV, sport utility vehicle (SUV), multi-purpose vehicle (MPV), truck, bus, public transport, etc. The vehicle can refer to a fuel-powered vehicle, an electric vehicle, or a hybrid vehicle.

[0032] Safety performance, noise, vibration, and harshness (NVH) are important design indicators for vehicles. As a crucial load-bearing component of the vehicle structure, the design of the floor beam structure directly affects the vehicle's safety and NVH performance. While traditional steel front floors can meet basic strength requirements, there is still room for optimization in terms of lightweighting, vibration isolation and noise reduction, and safety protection. Innovative materials and structural designs are needed to find the optimal solution that balances performance and cost.

[0033] In some technical solutions, the floor of new energy vehicles often adopts a "three horizontal and four vertical" steel frame structure and does not use a layered damping design. The energy conduction path design lacks systematic optimization, resulting in insufficient energy absorption efficiency and unstable deformation under collision conditions. The collision energy cannot be effectively released in stages, posing a significant safety hazard to the power battery and occupant protection. In addition, the fuel / hybrid platform needs to be developed independently, and there is spatial interference between the battery crossbeam and the fuel channel, resulting in the occupant compartment space not being maximized.

[0034] Therefore, embodiments of this application also provide a floor frame, referring to Figure 1 , Figure 2 and Figure 3 The floor frame includes an outer structure 100, a crossbeam structure 200, and a longitudinal beam structure 300. The outer structure 100 forms the outer contour of the floor frame. The crossbeam structure 200 includes a front seat crossbeam 210 and a rear seat crossbeam 220 extending along a first direction Y. The two ends of the front seat crossbeam 210 and the rear seat crossbeam 220 are respectively connected to the outer structure 100. A void area 400 is provided between the front seat crossbeam 210 and the rear seat crossbeam 220, and the void area 400 can accommodate at least a power battery 700. The longitudinal beam structure 300 includes a front middle longitudinal beam 310 and a rear middle longitudinal beam 320 extending along a second direction X. The second direction X forms an angle with the first direction Y. The front middle longitudinal beam 310 is located in the empty area 400 on the side near the front crossbeam 210 of the seat, and the front middle longitudinal beam 310 is connected to the front crossbeam 210 of the seat and the outer structure 100 respectively. The rear middle longitudinal beam 320 is located in the empty area 400 on the side near the rear crossbeam 220 of the seat, and the rear middle longitudinal beam 320 is connected to the rear crossbeam 220 of the seat and the outer structure 100 respectively.

[0035] In some examples, the outer structure 100 forms an approximately rectangular frame structure, with the length of the outer structure 100 aligned with the vehicle's direction of travel and the width of the outer structure 100 aligned with the width of the vehicle.

[0036] It should be noted that the angle between the first direction Y and the second direction X can be acute, right, or obtuse. In some examples, the first direction Y and the second direction X are set perpendicularly, where the first direction Y is the width direction of the vehicle and the second direction X is the driving direction of the vehicle.

[0037] In some examples, the front seat crossbeam 210 and the rear seat crossbeam 220 are used to mount seats, such as front seats. The structure of the floor frame can also effectively reduce the crush deformation of the passenger compartment and improve the safety protection of the occupants. The front seat crossbeam 210 is closer to the front end of the vehicle along the driving direction than the rear seat crossbeam 220.

[0038] In some examples, the vacant area 400 is used to house the power battery 700, which provides driving power for the vehicle; in other examples, the vehicle does not have a power battery 700, and the vacant area 400 can be left idle or used to house other structures of the vehicle.

[0039] In some examples, the front center longitudinal beam 310 is connected to the front end of the outer structure 100 along the vehicle travel direction, and the rear end of the front center longitudinal beam 310 is connected to the front crossbeam 210 of the seat along the vehicle travel direction; the rear center longitudinal beam 320 is connected to the rear crossbeam 220 of the seat along the vehicle travel direction, and the rear end of the rear center longitudinal beam 320 is connected to the rear end of the outer structure 100 along the vehicle travel direction.

[0040] The technical solution provided in this application embodiment is that the peripheral structure 100 forms the outer contour of the floor frame, and the crossbeam structure 200 and the longitudinal beam structure 300 are both disposed within the peripheral structure 100. The crossbeam structure 200 includes a front crossbeam 210 and a rear crossbeam 220 extending along the first direction Y. The front crossbeam 210 and the rear crossbeam 220 are used to install the seat.

[0041] Based on this, a void area 400 is provided between the front crossbeam 210 and the rear crossbeam 220 of the seat. The vehicle's power battery 700 can be placed in the void area 400. The longitudinal beam structure 300 includes a front middle longitudinal beam 310 and a rear middle longitudinal beam 320 extending along the second direction X. The front middle longitudinal beam 310 is connected between the front crossbeam 210 of the seat and the outer structure 100, and the rear middle longitudinal beam 320 is connected between the rear crossbeam 220 of the seat and the outer structure 100. When the vehicle suffers an external impact, part of the impact energy is transmitted and dispersed through the outer structure 100, and the other part can be dispersed and absorbed through the front middle longitudinal beam 310 and the rear middle longitudinal beam 320. The impact energy can be efficiently dispersed and released, thereby providing effective protection for the power battery 700 and the passengers on the seat. Moreover, the power battery 700 is located under the seat, effectively utilizing the space under the seat and facilitating the layout of the power battery 700 to ensure compatibility with different vehicle models.

[0042] Compared with the three-horizontal and four-vertical floor frame in related technologies, the floor frame of this application embodiment can effectively buffer impact force, improve vehicle safety performance, and optimize the layout of the power battery 700 to adapt to different vehicle models.

[0043] It should be noted that there can be one or more (including two) front center longitudinal beams 310 and one or more (including two) rear center longitudinal beams 320. The number of front center longitudinal beams 310 and rear center longitudinal beams 320 can be the same or different.

[0044] Reference Figure 2 and Figure 4 In some embodiments of this application, there are at least two front central longitudinal beams 310, and the at least two front central longitudinal beams 310 are symmetrically distributed about the central axis of the floor frame along the second direction X.

[0045] In some examples, the entire front center longitudinal beam 310 extends along the second direction X; in other examples, the larger portion of the front center longitudinal beam 310 extends along the second direction X, and the ends of the front center longitudinal beam 310 are configured as bent structures.

[0046] In some examples, there are two front center longitudinal beams 310, which are symmetrically distributed about the central axis of the floor frame along the second direction X.

[0047] The technical solution provided in this application embodiment can effectively increase the transmission path of impact energy by setting at least two front central longitudinal beams 310, so as to efficiently disperse and release the impact force. The front central longitudinal beams 310 symmetrically distributed about the central axis make the force on the floor frame more balanced.

[0048] Reference Figure 4In some embodiments of this application, the beam structure 200 further includes a connecting beam 230, which extends along a first direction Y, and the two ends of the connecting beam 230 along the first direction Y are respectively connected to two front middle longitudinal beams 310.

[0049] In some examples, the connecting beam 230 is a tubular structure; in other examples, the connecting beam 230 is a solid rod structure.

[0050] In some examples, the cross-section of the connecting beam 230 is a regular or irregular shape such as a circle, ellipse, rectangle, triangle, hexagon, trapezoid, or rhombus.

[0051] For example, the connecting beam 230 is a φ40×2.5mm high-strength tubular beam, that is, a cylindrical tubular structure with a diameter of 40 mm and a thickness of 2.5 mm. It can effectively resist the deformation and instability of the longitudinal beam caused by frontal impact, so as to guide the orderly deformation of the longitudinal beam and improve the NVH performance of the whole vehicle.

[0052] The technical solution provided in this application embodiment helps to connect multiple front center longitudinal beams 310 into a whole by setting a connecting beam 230 between the two front center longitudinal beams 310, so as to resist frontal impact and reduce the possibility of longitudinal beam deformation and instability. By setting the connecting beam 230, the two front center longitudinal beams 310 can be guided to deform in an orderly manner, thereby improving the vehicle's NVH performance.

[0053] Reference Figure 2 and Figure 4 In some embodiments of this application, there are at least two rear central longitudinal beams 320, and the at least two rear central longitudinal beams 320 are symmetrically distributed about the central axis of the floor frame along the second direction X.

[0054] In some examples, there are two rear center longitudinal beams 320, which are symmetrically distributed about the central axis of the floor frame along the second direction X.

[0055] The technical solution provided in this application embodiment can effectively increase the transmission path of impact energy by setting at least two rear longitudinal beams 320, so as to efficiently disperse and release the impact force. The rear longitudinal beams 320 symmetrically distributed about the central axis make the stress on the floor frame more balanced.

[0056] Reference Figure 2 In some embodiments of this application, two adjacent front middle longitudinal beams 310 have a first spacing W1 along the first direction Y, and two adjacent rear middle longitudinal beams 320 have a second spacing W2 along the first direction Y, wherein the second spacing W2 is less than or equal to the first spacing W1.

[0057] In some examples, the second spacing W2 is less than the first spacing W1; in other examples, the second spacing W2 is equal to the first spacing W1.

[0058] In some examples, the floor frame includes two front center longitudinal beams 310 and two rear center longitudinal beams 320, with a first spacing W1 between the two front center longitudinal beams 310 being smaller than a second spacing W2 between the two rear center longitudinal beams 320.

[0059] The technical solution provided in this application embodiment allows external impact energy to be gradient-transmitted and gradually dispersed and released because the first distance W1 between two adjacent front longitudinal beams 310 is greater than the second distance W2 between two adjacent rear longitudinal beams 320, thereby improving the vehicle's vibration resistance and safety performance.

[0060] Reference Figure 2 , Figure 3 and Figure 5 In some embodiments of this application, the floor frame further includes a floor body 500 and a mounting beam 600, the mounting beam 600 being used to mount the power battery 700; a first reinforcing cavity 221 is formed between the seat rear beam 220 and the floor body 500, and a second reinforcing cavity 610 is formed between the mounting beam 600 and the floor body 500, the first reinforcing cavity 221 and the second reinforcing cavity 610 being disposed opposite to the floor body 500.

[0061] In some examples, the rear seat crossbeam 220 is a sheet metal structure, and the rear seat crossbeam 220 is recessed in a direction away from the floor body 500 to form a first reinforcing cavity 221, the outline of which can be trapezoidal.

[0062] In some examples, the mounting beam 600 is a sheet metal structure, and the mounting beam 600 is recessed in a direction away from the floor body 500 to form a second reinforcing cavity 610, the outline of which can be trapezoidal. The mounting beam 600 can be used to secure the power battery 700 to the power battery 700 using fasteners such as bolts.

[0063] The technical solution provided in this application embodiment forms a super-strong anti-torsion unit with continuous cavities by setting the first reinforcing cavity 221 of the rear crossbeam 220 of the seat and the second reinforcing cavity 610 of the mounting crossbeam 600 relative to the floor body 500, thereby improving the torsional resistance of the whole vehicle and effectively resisting the impact deformation of the side collision of the vehicle body.

[0064] Reference Figure 3 and Figure 5 In some embodiments of this application, a third reinforcing cavity 222 is formed between the rear crossbeam 220 of the seat and the floor body 500. An installation space is provided on the side of the floor body 500 away from the rear crossbeam 220 corresponding to the empty area 400. The installation space can at least accommodate the power battery 700. The third reinforcing cavity 222 and the installation space are arranged relative to the floor body 500.

[0065] In some examples, the installation space corresponds to the space beneath the seat. This space, without affecting the passenger's foot space, is compatible with the seating posture of both gasoline and hybrid vehicles, demonstrating good platform compatibility. The power battery 700 is located under the front seat; this embedded arrangement makes efficient use of space and provides effective protection for the power battery 700.

[0066] In some examples, the cross-section of the rear seat crossbeam 220 is set to an approximately M-shaped structure, and the cross-section of the mounting crossbeam 600 is set to an approximately U-shaped structure. The rear seat crossbeam 220 and the mounting crossbeam 600 are welded together to form a continuous cavity ultra-strong anti-torsion unit inside, which improves the torsional resistance of the whole vehicle and can effectively resist the deformation of side collision impact.

[0067] The technical solution provided in this application embodiment, by setting a third reinforcing cavity 222, forms an M-shaped double-chamber structure with the first reinforcing cavity 221, which further enhances the torsional resistance of the rear crossbeam 220 of the seat; the third reinforcing cavity 222 is arranged opposite to the installation space of the power battery 700, which can effectively protect the power battery 700 and reduce the intrusion of the crossbeam deformation into the installation space.

[0068] Reference Figure 2 , Figure 4 and Figure 6 In some embodiments of this application, the peripheral structure 100 includes a front crossbeam 110, a floor front crossbeam 120, and two sill beams 130. The sill beams 130 have a first end and a second end disposed along a second direction X. The two ends of the front crossbeam 110 are respectively connected to the two first ends, the two ends of the floor front crossbeam 120 are respectively connected to the two second ends, the two ends of the seat front crossbeam 210 are respectively connected to the two sill beams 130, and the two ends of the seat rear crossbeam 220 are respectively connected to the two sill beams 130.

[0069] In some examples, the front crossbeam 110 extends entirely along the first direction Y; in other examples, the middle of the front crossbeam 110 extends along the first direction Y, and the two ends of the front crossbeam 110 are inclined toward the seat front crossbeam 210.

[0070] In some examples, the front crossbeam 110, the front seat crossbeam 210, the rear seat crossbeam 220, and the front floor crossbeam 120 are all located inside the two sill beams 130.

[0071] The technical solution provided in this application embodiment is that the peripheral structure 100 forms a peripheral force transmission structure through multiple crossbeams and sill beams 130. The front crossbeam 210 and the rear crossbeam 220 of the seat are respectively connected to the two sill beams 130, which expands the transmission path of impact energy. Through the cooperation of multiple crossbeams and longitudinal beams, the gradient transmission and gradual release of impact energy can be achieved, thereby improving the vehicle's safety performance and NVH performance.

[0072] Reference Figure 4 , Figure 6 and Figure 7 , in some embodiments of the present application, the peripheral structure 100 further comprises two floor side rails 140 extending along the second direction X, two ends of each floor side rail 140 are respectively connected to the dash cross member 110 and the front floor cross member 120, and the front middle side rail 310 is connected to the corresponding floor side rail 140 on its side; the floor side rails 140 are located between the two rocker panels 130, and the vacant area 400 is located between the two floor side rails 140.

[0073] In some examples, the front end portions of the floor side rails 140 (the end portions connected to the dash cross member 110) are arranged obliquely toward the central axis of the floor frame, that is, the front end portions of the two floor side rails 140 are close to each other, and the main body portions of the floor side rails 140 extend along the second direction X, so that the front middle side rails 310 can be connected to the corresponding floor side rails 140.

[0074] In some examples, the front end portion of the front middle side rail 310 (the end portion connected to the floor side rail 140) is bent toward the corresponding floor side rail 140; specifically, the front end portion of the front middle side rail 310 is bent away from the central axis of the floor frame, that is, the front end portions of the two front middle side rails 310 face away from each other.

[0075] In some examples, the dash cross member 110, the front seat cross member 210, the floor side rails 140 and the front middle side rails 310 form a structure similar to a Chinese character "mu" (grid), and the rear seat cross member 220, the front floor cross member 120, the floor side rails 140 and the rear middle side rails 320 form another structure similar to the Chinese character "mu", so that the floor frame forms a double "mu" structure. The "double mu" structure formed by the four-cross-member and six-side-rail layout bears the transmission and absorption of impact energy, Figure 4 shows a schematic diagram of impact energy transmission in a frontal collision of a vehicle.

[0076] In some examples, the dash cross member 110, the rear seat cross member 220, the front floor cross member 120, the front middle side rails 310, the rear middle side rails 320 and the rocker panels 130 are all made of gigapascal hot-formed steel, forming a rigid structural safety zone that effectively improves the anti-deformation capability of the occupant area. This design can improve the anti-deformation capability of the passenger compartment, Figure 7 shows a schematic diagram of impact energy transmission in a side collision of a vehicle.

[0077] In some examples, the power battery 700 is arranged in the installation space in an embedded manner, the rocker panels 130 form a primary protection area, and the floor side rails 140 form a secondary protection area, so as to implement secondary protection for the power battery 700, effectively resist impact energy during side collision, and avoid the risk of the power battery 700 being squeezed.

[0078] The technical solution provided in this application embodiment includes a floor longitudinal beam 140 in the peripheral structure 100. Together with other beam structures of the peripheral structure 100, as well as the crossbeam structure 200 and the longitudinal beam structure 300, the floor structure is arranged in a four-horizontal and six-vertical pattern, forming a "dual-eye" structure that can withstand and absorb more impact energy. This helps to achieve the gradient transmission and gradual release of impact energy, thereby improving the vehicle's safety performance and NVH performance.

[0079] It should be noted that the extension direction of various beam structures in the floor frame can be the direction of the line connecting the two ends of the beam structure, or the extension direction of the beam structure can be the extension direction of the larger part of its volume. For example, the main structure of the front middle longitudinal beam 310 extends along the second direction X, and the end of the front middle longitudinal beam 310 can be set as a bent structure.

[0080] Furthermore, the connections between various beam structures include, but are not limited to, welding, bonding, snap-fitting, riveting, or fastener connections. In some examples, the front crossbeam 110, the seat front crossbeam 210, the seat rear crossbeam 220, the floor front crossbeam 120, the sill beam 130, the floor longitudinal beam 140, the front center longitudinal beam 310, the rear center longitudinal beam 320, and the connecting beam 230 are fixed by welding.

[0081] In some embodiments of this application, the vehicle includes the floor frame of the present application embodiments, and the vacant area 400 is idling; or, the vehicle also includes a power battery 700, which is disposed in the vacant area 400.

[0082] In some examples, the vehicle is a fuel-powered vehicle equipped with an internal combustion engine, and the vacant area 400 can be left idle or used to accommodate vehicle components such as pipes.

[0083] In other examples, the vehicle is a hybrid electric vehicle (HEV), with an empty area 400 used to house the power battery 700, which is effectively protected by a floor frame.

[0084] The technical solution provided in this application embodiment includes a vehicle with a floor frame. The crossbeam structure 200 and longitudinal beam structure 300 of the floor frame can effectively buffer impact forces, improve the safety performance of the vehicle, and optimize the layout of the power battery 700 to adapt to different vehicle models.

[0085] The floor frame and vehicle of this application embodiment include four crossbeams: a front crossbeam 110, a front floor crossbeam 120, a front seat crossbeam 210, and a rear seat crossbeam 220; and six sets of longitudinal beams: a sill beam 130, a floor longitudinal beam 140, a front center longitudinal beam 310, and a rear center longitudinal beam 320. This achieves a four-horizontal and six-longitudinal topology, designing the floor frame as a highly efficient force-dissipating device. This layered damping force-dissipating structure design enables efficient absorption and chain transmission of collision energy within a limited deformation space when the vehicle is impacted. It achieves efficient gradient absorption and orderly release of collision energy, improving the overall stability and deformation resistance of the structure. Under spatial constraints, it achieves the optimal solution for structural safety and space utilization.

[0086] It uses 1500MPa grade ultra-high strength steel and hot-formed materials, and distributes them in an orderly manner (refer to...). Figure 2 The red path corresponds to the beam structure, forming a ring-shaped rigid force transmission loop. The application of different material combinations improves the overall stability and deformation resistance of the structure. The rear seat crossbeam 220 and the mounting crossbeam 600 are connected by interlocking to form a high-torque box, which can achieve controllable stress distribution and energy consumption when subjected to a collision. An anti-instability rigid connecting beam 230 is added between the front and middle longitudinal beams 310 to improve the orderly transmission of energy in the longitudinal beams, and to synergistically improve the structural stability, durability and lightweight performance.

[0087] In terms of spatial arrangement, the installation space under the seats is effectively utilized. By making combined use of the installation space, different configuration requirements for fuel or hybrid vehicles can be met on the same body structure, realizing the compatible development of fuel and hybrid platforms.

[0088] Compared with related technologies, it effectively weakens the high-mid-range channel structure, better accommodates the layout requirements of fuel and HEV, maximizes the passenger space inside the vehicle, and better protects the power battery 700, thus having good safety performance.

[0089] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A floor frame, characterized in that, include: The outer structure (100) forms the outer contour of the floor frame; The crossbeam structure (200) includes a front seat crossbeam (210) and a rear seat crossbeam (220) extending along a first direction (Y). The two ends of the front seat crossbeam (210) and the rear seat crossbeam (220) are respectively connected to the peripheral structure (100). A void area (400) is provided between the front seat crossbeam (210) and the rear seat crossbeam (220). The void area (400) can at least accommodate a power battery (700). The longitudinal beam structure (300) includes a front middle longitudinal beam (310) and a rear middle longitudinal beam (320) extending along a second direction (X), the second direction (X) having an angle with the first direction (Y), the front middle longitudinal beam (310) being disposed on the side of the vacant area (400) near the front crossbeam (210) of the seat, the front middle longitudinal beam (310) being connected to the front crossbeam (210) of the seat and the peripheral structure (100); the rear middle longitudinal beam (320) being disposed on the side of the vacant area (400) near the rear crossbeam (220) of the seat, the rear middle longitudinal beam (320) being connected to the rear crossbeam (220) of the seat and the peripheral structure (100).

2. The floor frame according to claim 1, characterized in that, There are at least two front center longitudinal beams (310), and the at least two front center longitudinal beams (310) are symmetrically distributed about the central axis of the floor frame along the second direction (X).

3. The floor frame according to claim 2, characterized in that, The beam structure (200) further includes a connecting beam (230) extending along the first direction (Y), and the connecting beam (230) connecting the two front middle longitudinal beams (310) at both ends along the first direction (Y).

4. The floor frame according to any one of claims 1 to 3, characterized in that, There are at least two rear longitudinal beams (320), and the at least two rear longitudinal beams (320) are symmetrically distributed about the central axis of the floor frame along the second direction (X).

5. The floor frame according to claim 4, characterized in that, Two adjacent front longitudinal beams (310) have a first spacing (W1) along the first direction (Y), and two adjacent rear longitudinal beams (320) have a second spacing (W2) along the first direction (Y), wherein the second spacing (W2) is less than or equal to the first spacing (W1).

6. The floor frame according to any one of claims 1 to 3, characterized in that, It also includes a floor body (500) and a mounting beam (600) for mounting the power battery (700); A first reinforcing cavity (221) is formed between the rear crossbeam (220) of the seat and the floor body (500), and a second reinforcing cavity (610) is formed between the mounting crossbeam (600) and the floor body (500). The first reinforcing cavity (221) and the second reinforcing cavity (610) are arranged opposite to each other with respect to the floor body (500).

7. The floor frame according to claim 6, characterized in that, A third reinforcing cavity (222) is formed between the rear crossbeam of the seat (220) and the floor body (500). The floor body (500) has an installation space on the side away from the rear crossbeam of the seat (220) corresponding to the empty area (400). The installation space is at least able to accommodate the power battery (700). The third reinforcing cavity (222) and the installation space are arranged opposite to each other with respect to the floor body (500).

8. The floor frame according to any one of claims 1 to 3, characterized in that, The peripheral structure (100) includes a front crossbeam (110), a floor front crossbeam (120), and two sill beams (130), the sill beams (130) having a first end and a second end disposed along the second direction (X); The two ends of the front crossbeam (110) are respectively connected to the two first ends, the two ends of the floor front crossbeam (120) are respectively connected to the two second ends, the two ends of the seat front crossbeam (210) are respectively connected to the two sill beams (130), and the two ends of the seat rear crossbeam (220) are respectively connected to the two sill beams (130).

9. The floor frame according to claim 8, characterized in that, The peripheral structure (100) also includes two floor longitudinal beams (140) extending along the second direction (X), the two ends of the floor longitudinal beams (140) being connected to the front crossbeam (110) and the front floor crossbeam (120) respectively, and the front middle longitudinal beam (310) being connected to the floor longitudinal beams (140) on the corresponding side. The floor beam (140) is located between the two threshold beams (130), and the vacant area (400) is located between the two floor beams (140).

10. A vehicle, characterized in that, include: The floor frame according to any one of claims 1 to 9, wherein the vacant area (400) is left unused; or, the vehicle further includes a power battery (700) disposed in the vacant area (400).

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