Front floor assembly, lower vehicle body assembly and vehicle

Abstract

The utility model discloses a front floor assembly, a lower vehicle body assembly and a vehicle, and the front floor assembly comprises a front floor longitudinal beam, a front floor body and a rear floor longitudinal beam, a mounting groove is formed in the front floor body, and the front floor longitudinal beam is inserted into the mounting groove and matched with the mounting groove; wherein the shape of the front floor longitudinal beam is changed so as to resist the deformation of a formed part; according to the front floor assembly provided by the embodiment of the utility model, the front floor longitudinal beam is arranged to be strip-shaped, so that the formed front floor longitudinal beam does not rebound, and the stability of the formed front floor longitudinal beam is ensured. The rebounding ribs are arranged on the front floor longitudinal beam, rebounding deformation of the front floor longitudinal beam in the forming process or after forming is prevented, the structural strength is enhanced, material utilization is optimized, and collision safety is improved. By means of the design, the overall performance and safety of the vehicle can be improved, and the manufacturing purposes of light weight, cost control and the like are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile manufacturing, in particular to a front floor assembly. Background Art

[0002] In the related technology, a rather thorny problem has been encountered in the molding process of HC600 / 980QP materials. Specifically, the front floor longitudinal beam produced by the current process has a significant rebound phenomenon at both ends and sides, making it difficult to effectively control the dimensional deformation. This not only seriously affects the welding matching performance of the parts, but also brings great difficulties to the subsequent installation matching; therefore, there is room for improvement. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the first purpose of the utility model is to provide a front floor assembly that can ensure that the longitudinal beam of the front floor does not rebound after being formed.

[0004] The second objective of the utility model is to provide an underbody assembly, which includes the front floor assembly.

[0005] The third objective of the utility model is to provide a vehicle, which includes the lower body assembly.

[0006] The first aspect of the utility model provides a front floor assembly, comprising: a front floor longitudinal beam and a front floor body; the front floor longitudinal beam is in a long strip shape; the front floor body is provided with a mounting groove, the front floor longitudinal beam is inserted into the mounting groove and cooperates with the mounting groove; wherein the shape of the front floor longitudinal beam is changed to resist the deformation of the formed parts.

[0007] According to an embodiment of the utility model, the side wall of the front floor longitudinal beam is provided with a rebound rib or a concave-convex structure, and the rebound rib or the concave-convex structure is used to resist deformation of the molded parts.

[0008] According to an embodiment of the present invention, the cross section of the front floor longitudinal beam is U-shaped, and the side curvature of the U-shaped cross section is 5°-7°.

[0009] In some embodiments, the U-shaped cross section of the front floor longitudinal beam has a width W of 60 mm to 70 mm and a height H of 45 mm to 55 mm.

[0010] In some embodiments, the chamfer angle R of the bottom of the front floor longitudinal beam is 7mm-9mm, and the upper portion of the front floor longitudinal beam has a connecting edge, and the chamfer angle R of the connecting edge is 5mm-7mm.

[0011] According to an embodiment of the utility model, the front floor longitudinal beams include two, and the two front floor longitudinal beams are arranged at intervals and have the same structure.

[0012] According to an embodiment of the utility model, a positioning hole is opened on the front floor longitudinal beam.

[0013] The second aspect of the utility model proposes an undercarriage assembly, which includes the front floor assembly, a launch bin and a rear floor assembly, wherein the front floor longitudinal beam is connected to the launch bin through a positioning hole, and the end of the front floor longitudinal beam away from the launch bin is connected to the rear floor assembly.

[0014] A third aspect of the utility model provides a vehicle, which includes the lower body assembly, a body structure and a chassis, wherein the lower body assembly is located between the body structure and the chassis, and wherein the lower body assembly is arranged on the chassis.

[0015] According to the front floor assembly of the embodiment of the utility model, by setting the front floor longitudinal beam into a long strip shape, the front floor longitudinal beam after forming does not rebound, thereby ensuring the stability of the front floor longitudinal beam after forming. The long strip front floor longitudinal beam cooperates with the installation groove, thereby realizing the assembly of the long strip front floor longitudinal beam, while improving the strength of the overall structure and enhancing the ability to resist deformation. In addition, rebound ribs are set on the front floor longitudinal beam to prevent the front floor longitudinal beam from rebounding and deforming during or after forming, enhance structural strength, optimize material utilization and improve collision safety. Such a design can not only improve the overall performance and safety of the vehicle, but also achieve manufacturing goals such as lightweight and cost control.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 It is a schematic diagram of the structure of the front floor longitudinal beam at one perspective;

[0019] Figure 2 This is a structural diagram of the front floor longitudinal beam from another perspective;

[0020] Figure 3 is a schematic diagram of a cross section of a front floor longitudinal beam;

[0021] Figure 4 is a schematic diagram of the assembly of the front floor assembly according to an embodiment of the utility model;

[0022] Figure 5 It is a schematic diagram of the assembly of the front floor assembly, the hair compartment and the rear floor assembly according to an embodiment of the utility model.

[0023] Reference numerals:

[0024] Front floor longitudinal beam 10, rebound rib 101, positioning hole 102,

[0025] Front floor body 20,

[0026] The front floor assembly is 30, the delivery compartment is 40, and the rear floor assembly is 50. DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0028] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "plate thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] Combine the following Figure 1-Figure 5 As shown, a front floor assembly according to an embodiment of the present utility model is described.

[0031] like Figure 1 As shown, the present disclosure provides a front floor assembly 30 , which includes a front floor longitudinal beam 10 and a front floor body 20 .

[0032] The front floor longitudinal beam 10 is in the shape of a long strip. The front floor body 20 is provided with a mounting groove, and the front floor longitudinal beam 10 is inserted into the mounting groove and matched with the mounting groove. The shape of the front floor longitudinal beam 10 is changed to resist the deformation of the molded parts.

[0033] The function of the front floor longitudinal beam 10 is to bear and disperse the impact force. For example, when a collision occurs, the front floor longitudinal beam 10 can absorb and disperse the impact force from the front, protect the integrity of the passenger compartment, and thus reduce the damage to the internal members.

[0034] The second aspect is to provide vehicle body rigidity. The front floor longitudinal beam 10 greatly improves the rigidity of the vehicle body, maintains the stability of the vehicle during driving and reduces the distortion of the vehicle body.

[0035] The third aspect is to provide support and positioning. For example, the front floor longitudinal beam 10 provides support and positioning for the key components of the engine and suspension system, ensuring that these components can work normally and remain in the correct position.

[0036] The fourth aspect is to guide the transfer of force. For example, when the vehicle collides or is subjected to other external forces, the front floor longitudinal beam 10 will guide these forces to be transferred along the designed path, thereby ensuring that the core part of the vehicle is not damaged.

[0037] Since HC600 / 980QP is a high-strength material, in order to avoid uneven distribution of internal stress and rebound during the part forming process, the front floor longitudinal beam 10 is in a long strip shape. In other words, the long strip front floor longitudinal beam 10 ensures uniform distribution of internal stress and stability of the formed front floor longitudinal beam 10.

[0038] The shape of the front floor longitudinal beam 10 is not limited in this embodiment.

[0039] The mounting groove cooperates with the front floor longitudinal beam 10 , thereby realizing the assembly of the front floor longitudinal beam 10 and the front floor body 20 . During the parts molding process, it is ensured that the molded front floor longitudinal beam 10 does not rebound.

[0040] According to the front floor assembly 30 of the embodiment of the utility model, the front floor longitudinal beam 10 is set to be long and strip-shaped, so that the front floor longitudinal beam 10 does not rebound after being formed, and the stability of the front floor longitudinal beam 10 after being formed is ensured. The long strip front floor longitudinal beam 10 is matched with the installation groove, so that the long strip front floor longitudinal beam 10 is assembled, and the strength of the overall structure is improved, and the ability to resist deformation is enhanced.

[0041] According to an embodiment of the utility model, the side wall of the front floor longitudinal beam 10 is provided with a rebound rib 101 or a concave-convex structure, and the rebound rib 101 or the concave-convex structure is used to resist deformation of the molded parts.

[0042] The side wall of the front floor longitudinal beam 10 is provided with a rebound rib 101 or a concave-convex structure in order to resist the deformation of the front floor longitudinal beam 10 after molding.

[0043] The rebound ribs 101 are arranged on the outer side wall of the front floor longitudinal beam 10, and the rebound ribs 101 include a plurality of rebound ribs 101, which are arranged at intervals on the outer side wall of the front floor longitudinal beam 10 to ensure that the formed front floor longitudinal beam 10 does not rebound and increase the ability to resist deformation.

[0044] The front floor longitudinal beam 10 may also be curved, and a plurality of intervally arranged rebound ribs 101 may be provided on the outer surface of the curved front floor longitudinal beam 10 to increase the ability to resist deformation and ensure that the formed front floor longitudinal beam 10 does not rebound.

[0045] Specifically, the function of the rebound rib 101 in this embodiment is as follows:

[0046] Preventing rebound deformation, that is, the design of the rebound rib 101 can effectively suppress the rebound deformation that may occur during the molding or use of the front floor longitudinal beam 10. By increasing the local rigidity and stability of the material, the rebound rib 101 can ensure that the front floor longitudinal beam 10 maintains its predetermined shape and size when subjected to external force, thereby avoiding structural problems caused by rebound.

[0047] Enhance the structural strength, that is, the rebound rib 101 as a part of the front floor longitudinal beam 10 can significantly improve the structural strength of the longitudinal beam. When the vehicle is driving or collides, the front floor longitudinal beam 10 needs to bear forces and loads from different directions. By providing the rebound rib 101, these forces can be more evenly distributed to various parts of the longitudinal beam, thereby enhancing the overall load-bearing capacity and anti-deformation ability of the longitudinal beam.

[0048] Optimizing material utilization, that is, in automobile manufacturing, lightweight and cost control are key considerations. By providing the rebound rib 101, material utilization can be optimized while ensuring structural strength. The design of the rebound rib 101 enables the material to function more effectively when subjected to force, thereby reducing material waste and cost increase.

[0049] Improve collision safety, that is, when a vehicle collision occurs, the front floor longitudinal beam 10, as one of the main force transmission paths, is crucial to protecting the safety of the occupants. By providing the rebound ribs 101, the energy absorption and dispersion capabilities of the front floor longitudinal beam 10 during a collision can be further improved, thereby reducing the intrusion of the collision into the passenger compartment and the damage to the occupants.

[0050] In short, the role of "arranging the rebound rib 101 on the front floor longitudinal beam 10" is mainly reflected in preventing rebound deformation, enhancing structural strength, optimizing material utilization and improving collision safety. This design can not only improve the overall performance and safety of the vehicle, but also help achieve manufacturing goals such as lightweight and cost control.

[0051] In this embodiment, the shape of the front floor longitudinal beam 10 is not limited.

[0052] According to an embodiment of the utility model, the cross section of the front floor longitudinal beam 10 is U-shaped, and the side curvature of the U-shaped cross section is 5°-7°. The cross section of the front floor longitudinal beam 10 is U-shaped, and the side curvature of the U-shaped cross section is 5°-7°, preferably 6°, which can ensure that the front floor longitudinal beam 10 after forming does not rebound, ensure the stability of the front floor longitudinal beam 10 after forming, and the cross section of the floor longitudinal beam is U-shaped, so as to achieve lightweight structure.

[0053] Specifically:

[0054] The cross section of the front floor longitudinal beam 10 is U-shaped. The first aspect is to improve the structural strength and rigidity. For example, the U-shaped cross section has good structural strength and rigidity and can effectively withstand loads from all directions, including bending, torsion and shearing forces. Such a design allows the front floor longitudinal beam 10 to remain stable during vehicle driving and reduce deformation and vibration.

[0055] The second aspect is to optimize weight. For example, compared with solid or other shaped sections, the U-shaped section can reduce the amount of material while ensuring sufficient strength, thereby achieving a lightweight design.

[0056] The third aspect is to enhance the bending resistance. For example, the opening direction of the U-shaped cross section has an important influence on the bending resistance. In the application of the front floor longitudinal beam 10 of the automobile, the opening of the U-shaped cross section is usually toward the side of the vehicle. Such a design can make the front floor longitudinal beam 10 have better bending resistance when it is hit from the side.

[0057] The fourth aspect is to facilitate manufacturing. For example, the U-shaped cross section is easy to manufacture and process. By using stamping, bending and other processes, a U-shaped front floor longitudinal beam 10 with a desired curvature and size can be efficiently produced.

[0058] The fifth aspect is the selection of curvature. The selection of the curvature of the U-shaped cross-section front floor longitudinal beam 10 to be 6 degrees is based on the results of empirical optimization and experimental verification. This curvature is an optimal value determined after considering multiple factors such as structural strength, rigidity, weight, manufacturing process and assembly requirements. It can ensure that the longitudinal beam has sufficient mechanical properties and meet the requirements of manufacturing process and assembly accuracy.

[0059] The sixth aspect is collision safety. For example, when a car collides, the front floor longitudinal beam 10 serves as an important force transmission path and energy absorption component. Its U-shaped design is conducive to energy absorption and dispersion, thereby improving the safety of the vehicle.

[0060] In some embodiments, Figure 3 As shown, the width W of the U-shaped cross section of the front floor longitudinal beam 10 is 60 mm-70 mm, preferably 67 mm, and the height H is 45 mm-55 mm, preferably 50 mm, so as to ensure that the front floor longitudinal beam 10 after forming does not change or rebound.

[0061] Specifically:

[0062] The width of the U-shaped cross section of the front floor longitudinal beam 10 is preferably 67 mm, and the height is preferably 50 mm. This design is to, firstly, enhance the structural strength and rigidity. That is, the selection of these size ranges can ensure that the front floor longitudinal beam 10 has sufficient structural strength and rigidity to withstand various loads generated during vehicle driving, including bending, torsion and shearing forces, etc. Sufficient strength and rigidity are the key to maintaining vehicle stability and safety.

[0063] Secondly, material utilization and lightweighting are achieved. That is to say, by selecting the appropriate cross-sectional size, the amount of material used can be optimized while ensuring structural performance, thereby achieving a lightweight design of the vehicle.

[0064] Thirdly, in order to ensure collision safety, that is, when a car collides, the front floor longitudinal beam 10 is an important force transmission path and energy absorption component, and its cross-sectional dimensions are designed to ensure collision safety. That is, the width and height can ensure that the front floor longitudinal beam 10 effectively absorbs and disperses energy during a collision, protecting the safety of the occupants.

[0065] In some embodiments, the bottom chamfer of the front floor longitudinal beam 10 is 7mm-9mm, preferably 8mm, and the upper portion of the front floor longitudinal beam 10 has a connecting edge, and the connecting edge chamfer R is 5mm-7mm, preferably 6mm. Such a design ensures that the front floor longitudinal beam 10 after forming does not rebound or remain unchanged, and enhances the ability to resist deformation.

[0066] Specifically:

[0067] Chamfer design can improve the stress distribution of materials. During the forming process, stress will be generated inside the material, and chamfering can effectively disperse this stress and avoid deformation or cracking caused by stress concentration. By optimizing the chamfer radius, the stress distribution can be made more uniform, thereby improving the deformation resistance of the longitudinal beam.

[0068] Secondly, the chamfer design reduces the springback phenomenon during the molding process. Springback is the tendency of the material to return to its original shape after molding, and the chamfer radius can effectively suppress this springback. The chamfer design of the bottom and upper connecting edges ensures that the front floor longitudinal beam 10 can maintain a stable shape and size after molding by optimizing the plastic flow and elastic recovery of the material.

[0069] In addition, the chamfer design also improves the assembly performance of the front floor longitudinal beam 10. The chamfer makes the contact between the front floor longitudinal beam 10 and other components smoother, reducing friction and resistance during assembly. This not only improves assembly efficiency, but also helps to ensure assembly accuracy and stability.

[0070] In summary, the chamfer design of the bottom and upper connecting edges of the front floor longitudinal beam 10 ensures that the front floor longitudinal beam 10 does not rebound or deform after forming, and enhances the ability to resist deformation through the comprehensive effects of stress distribution, springback reduction, assembly performance improvement and manufacturing process consideration. This design not only improves the safety and stability of the vehicle, but also helps to achieve an economical and efficient manufacturing process.

[0071] According to an embodiment of the utility model, the front floor longitudinal beam 10 includes two, and the two front floor longitudinal beams 10 are arranged at intervals and have the same structure. Such a design ensures that the formed front floor longitudinal beam 10 does not rebound or remain unchanged, and enhances the ability to resist deformation.

[0072] Specifically:

[0073] The structural stability is enhanced, that is, by using two front floor longitudinal beams 10 of the same structure and arranging them at intervals, the load on the front of the vehicle body can be effectively dispersed, thereby enhancing the structural stability of the entire front floor. This design reduces the possible distortion and deformation of the vehicle body during driving, thereby improving the vehicle's handling and ride comfort.

[0074] Preventing rebound and deformation, that is, the structural identity and spacing arrangement of the two front floor longitudinal beams 10, combined with their material properties and molding process, work together to prevent rebound or deformation of the formed front floor longitudinal beam 10. This design ensures that the front floor longitudinal beam 10 can maintain a stable shape and size after molding, thereby ensuring the accuracy of vehicle assembly and reliability in long-term use.

[0075] Optimizing material utilization, that is, the two front floor longitudinal beams 10 with the same structure not only simplify the manufacturing process, but also optimize the utilization of materials. Through mass production and standardized design, material waste can be reduced, production efficiency can be improved, and ultimately the manufacturing cost of the vehicle can be reduced.

[0076] The collision safety is improved, that is, when the vehicle collides, especially a frontal collision, the two strong and stable front floor longitudinal beams 10 can effectively absorb and disperse the collision energy, thereby protecting the safety of the occupants. This design enhances the safety performance of the vehicle in a collision accident.

[0077] Easy to assemble and repair, that is, because the two front floor longitudinal beams 10 have the same structure, they can be used interchangeably during assembly, which greatly simplifies the assembly process and improves assembly efficiency. At the same time, it is also easier to find suitable replacement parts during maintenance, reducing maintenance costs and time.

[0078] In summary, by using two front floor longitudinal beams 10 of the same structure and arranged at intervals, and combining the optimized design of its material and molding process, it is possible to achieve that the molded front floor longitudinal beam 10 does not rebound or deform, thereby ensuring the stability of the molded front floor longitudinal beam 10. This design not only improves the structural stability and safety performance of the vehicle, but also reduces manufacturing costs and improves the convenience of assembly and maintenance.

[0079] According to an embodiment of the present invention, a positioning hole 102 is provided on the front floor longitudinal beam 10. Such a design is to ensure that the front floor longitudinal beam 10 can be firmly connected with other components.

[0080] Specifically:

[0081] Positioning accuracy, that is, the design of the positioning hole 102 ensures the accurate positioning of the front floor longitudinal beam 10 during assembly. The positioning hole 102 matches the corresponding hole positions of other components, so that each component can be installed according to a predetermined position and angle, thereby ensuring the accuracy of the overall structure.

[0082] The structural stability is enhanced, that is, the front floor longitudinal beam 10 can be firmly connected to other body parts through the positioning holes 102. This connection not only enhances the stability of the front floor longitudinal beam 10 itself, but also helps to improve the rigidity and torsion resistance of the entire body structure, thereby reducing possible deformation during use.

[0083] It is convenient for inspection and adjustment, that is, the positioning holes 102 provide convenience for quality inspection and adjustment. During the manufacturing process, the position and posture of the front floor longitudinal beam 10 can be quickly determined by checking the positioning holes 102. If deviation is found, it can be adjusted in time to ensure that the formed front floor longitudinal beam 10 meets the design requirements.

[0084] The second aspect of the utility model proposes an undercarriage assembly, which includes the front floor assembly 30, the launch bin 40 and the rear floor assembly 50, wherein the front floor longitudinal beam 10 is connected to the launch bin 40 through a positioning hole 102, and the end of the front floor longitudinal beam 10 away from the launch bin 40 is connected to the rear floor assembly 50.

[0085] Front floor assembly 30:

[0086] Function: The front floor assembly 30 mainly bears the load of the cab and the front passenger area, including the support of seats, consoles, accelerator pedals, etc. It is also connected to the gantry 40 and the rear floor assembly 50 to transmit and disperse various forces from the front of the vehicle body.

[0087] Structural features: The front floor assembly 30 is usually designed with front floor longitudinal beams 10, which have high strength and good plasticity, can effectively absorb and disperse collision energy, and improve the safety of the vehicle.

[0088] Issue 40:

[0089] Function: The engine compartment 40 (also called the engine compartment) mainly accommodates and protects the engine and its related accessories, such as the radiator, battery, air filter, etc. It is also connected with the front floor assembly 30 and the rear floor assembly 50 to form a solid structure to support and protect the engine system.

[0090] Structural features: The engine compartment 40 is usually made of high-strength metal material and has sufficient rigidity and impact resistance to ensure that the engine and passengers are protected when the vehicle collides.

[0091] Rear floor assembly 50:

[0092] Function: The rear floor assembly 50 mainly bears the load of the rear passenger area and the trunk. It is connected with the front floor assembly 30 to form a continuous floor structure to provide a smooth riding experience and sufficient storage space.

[0093] Structural features: The rear floor assembly 50 is also designed with structures such as longitudinal beams and cross beams to enhance overall rigidity and stability. These structures also help to disperse various forces from the rear of the vehicle body and improve the vehicle's handling and ride comfort.

[0094] Function after assembly:

[0095] Structural stability, that is, a strong and stable lower body structure is formed by assembling the front floor assembly 30, the gantry 40 and the rear floor assembly 50. This structure can effectively disperse and transmit the load and force from various parts of the body, and maintain the rigidity and stability of the body.

[0096] Collision safety, that is, when the vehicle collides, the lower body assembly can absorb and disperse the collision energy to reduce the impact and injury to the occupants. The design of the front floor assembly 30 and the hair compartment 40 is particularly important because they are located in the areas most susceptible to impact in a collision accident.

[0097] Maneuverability and comfort, that is, by optimizing the design and connection of each component, the lower body assembly can provide better maneuverability and ride comfort. For example, the continuous floor structure of the front floor assembly 30 and the rear floor assembly 50 can reduce the distortion and vibration of the vehicle body and improve the ride stability.

[0098] In summary, the front floor assembly 30, the gantry 40 and the rear floor assembly 50 in the lower body assembly work together after assembly to provide guarantees in terms of structural stability, collision safety, handling and comfort.

[0099] The third aspect of the utility model provides a vehicle, which includes the lower body assembly, the body structure and the chassis, wherein the lower body assembly is located between the body structure and the chassis, and wherein the lower body assembly is arranged on the chassis.

[0100] The role of the lower body assembly in the car is mainly reflected in the following aspects:

[0101] The lower body assembly, as the main load-bearing structure at the bottom of the car, plays an important role in transmitting and dispersing various loads (such as passengers, cargo, road reaction, etc.). It transmits various forces to the entire body structure through the connection with the chassis, ensuring that the car can remain stable and safe under various driving conditions.

[0102] In other words, the lower body assembly also protects important parts of the bottom of the car (such as the engine, suspension system, fuel system, etc.) from erosion and damage by the external environment (such as mud, sand, etc.). Through its closed structural design, these parts can be effectively isolated from direct contact with the external environment, extending their service life.

[0103] According to the front floor assembly 30 of the embodiment of the utility model, by setting the front floor longitudinal beam 10 into a long strip shape, the front floor longitudinal beam 10 after forming does not rebound, thereby ensuring the stability of the front floor longitudinal beam 10 after forming. By matching the long strip front floor longitudinal beam 10 with the mounting groove, the assembly of the long strip front floor longitudinal beam 10 is achieved, while the strength of the overall structure is improved and the ability to resist deformation is enhanced. In addition, rebound ribs 101 are provided on the front floor longitudinal beam 10 to prevent the front floor longitudinal beam 10 from rebounding and deforming during or after forming, enhance structural strength, optimize material utilization, and improve collision safety. Such a design can not only improve the overall performance and safety of the vehicle, but also achieve manufacturing goals such as lightweight and cost control.

[0104] The front floor assembly 30 and other structures and operations described in the embodiment of the utility model are known to those skilled in the art and will not be described in detail here. The up-down direction, left-right direction and front-back direction are based on the up-down direction, left-right direction and front-back direction shown in the figure.

[0105] In the description of the present utility model, unless otherwise clearly specified and limited, a first feature "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature "above", "above" and "above" a second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.

[0106] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0107] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A front floor assembly, characterized in that: include: The front floor longitudinal beam is long and strip-shaped; The front floor body is provided with a mounting groove, and the front floor longitudinal beam is inserted into the mounting groove and matched with the mounting groove; The shape of the front floor longitudinal beam is changed to resist the deformation of the molded parts.

2. The front floor assembly according to claim 1, characterized in that: The side wall of the front floor longitudinal beam is provided with a rebound rib or a concave-convex structure, and the rebound rib or the concave-convex structure is used to resist deformation of the molded parts.

3. The front floor assembly according to claim 1, characterized in that: The cross section of the front floor longitudinal beam is U-shaped, and the side curvature of the U-shaped cross section is 5°-7°.

4. The front floor assembly according to claim 3, characterized in that: The width W of the U-shaped cross section of the front floor longitudinal beam is 60mm-70mm, and the height H is 45mm-55mm.

5. The front floor assembly according to claim 4, characterized in that: The chamfer angle R of the bottom of the front floor longitudinal beam is 7mm-9mm, and the upper part of the front floor longitudinal beam has a connecting edge, and the chamfer angle R of the connecting edge is 5mm-7mm.

6. The front floor assembly according to claim 1, characterized in that: The front floor longitudinal beams include two, and the two front floor longitudinal beams are arranged at intervals and have the same structure.

7. The front floor assembly according to claim 1 or 6, characterized in that: The front floor longitudinal beam is provided with a positioning hole.

8. A lower vehicle body assembly, characterized in that: comprising the front floor assembly, the hair compartment and the rear floor assembly as claimed in claim 7, The front floor longitudinal beam is connected to the firing chamber through a positioning hole, and one end of the front floor longitudinal beam away from the firing chamber is connected to the rear floor assembly.

9. A vehicle, characterized in that: comprising the lower body assembly, the body structure and the chassis as claimed in claim 8, Wherein, the lower body assembly is located between the body structure and the chassis, and wherein the lower body assembly is arranged on the chassis.

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