Front cabin framework assembly and vehicle body framework assembly with front cabin framework assembly

Abstract

The invention relates to the field of vehicle bodies, in particular to a forecabin framework assembly and a vehicle body framework assembly with the forecabin framework assembly, and the forecabin framework assembly comprises an edge frame assembly, a vehicle body longitudinal beam assembly, an internal frame assembly and a front wheel cover assembly; the edge frame assembly comprises a windshield cross beam assembly, a floor cross beam assembly and two A-column front frame assemblies; the two ends of the windshield cross beam assembly are connected with the floor cross beam assembly through A-column stand columns respectively. The A column front frame assembly is connected to the A column stand column. The two ends of the inner frame assembly are connected to the A column front frame assemblies respectively. The internal frame assembly is further connected with a vehicle body longitudinal beam assembly through a front wheel cover assembly. The vehicle body longitudinal beam assembly is connected to the floor cross beam assembly; the forecabin framework assembly disclosed by the invention is formed by splicing, a modular mounting unit can be formed, and modular production and splicing of the forecabin framework assembly are facilitated.

Description

Technical Field

[0001] This invention relates to the field of vehicle bodies, specifically to a front compartment frame assembly and a vehicle body frame assembly having the front compartment frame assembly. Background Technology

[0002] In the automotive body structure, the front cabin frame assembly is the basic framework that supports key components such as the suspension and steering system, and it is also the main area for stress and energy absorption in collision safety.

[0003] The rationality of its structural design directly affects the safety, rigidity, lightweight level, and manufacturing cost of the entire vehicle.

[0004] Traditional vehicle body front compartment structures are mostly manufactured using one-piece stamping or complex welding processes, especially major load-bearing components such as vehicle body longitudinal beams, which usually rely on large stamping dies for production.

[0005] While this production method ensures structural strength, it also suffers from high mold development costs, long production cycles, and poor flexibility, especially in small-batch, multi-model production. Furthermore, traditional front compartment structures often have low modularity and complex connections between components, leading to low assembly efficiency, inconvenient maintenance, and suboptimal force transmission paths during collisions, affecting the integrity of the passenger compartment and collision safety.

[0006] In addition, the front crossbeam is usually a simple plate or open section beam, and its cross-sectional shape and connection method have limited contribution to the windshield installation, dashboard support and overall ring stiffness.

[0007] Meanwhile, the rigidity and local strength of the subframe mounting point on the front longitudinal beam need to be improved, and the arrangement of the mounting point also imposes certain limitations on the utilization of the front compartment space and the layout of the chassis system.

[0008] Existing patent CN 218616913 U discloses a longitudinal beam assembly, a vehicle body structure, and a vehicle having the same. The longitudinal beam assembly disclosed in this patent has a relatively complex overall structure and mainly requires production through molds, resulting in high production costs.

[0009] Therefore, in order to improve or solve at least one of the above technical problems, it is necessary to optimize the design of the existing vehicle body frame. Summary of the Invention

[0010] The purpose of this invention is to provide a front cabin frame assembly that is low in production cost and easy to manufacture.

[0011] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0012] A front cabin frame assembly includes an edge frame assembly, a body longitudinal beam assembly, an internal frame assembly, and a front wheel arch assembly;

[0013] The edge frame assembly includes a windshield crossbeam assembly, a floor crossbeam assembly, and two A-pillar front frame assemblies;

[0014] The windshield beam assembly is connected to the floor beam assembly at both ends via A-pillars;

[0015] The front frame assembly of the A-pillar is connected to the A-pillar upright;

[0016] The internal frame assembly is connected at both ends to an A-pillar front frame assembly;

[0017] The internal frame assembly is also connected to the body longitudinal beam assembly via the front wheel arch assembly;

[0018] The vehicle body longitudinal beam assembly is connected to the floor crossbeam assembly.

[0019] The floor crossbeam assembly includes mounting crossbeams; the vehicle longitudinal beam assembly includes a front longitudinal beam assembly.

[0020] The front longitudinal beam assembly includes two spaced-apart front longitudinal beam units;

[0021] The two front longitudinal beam units are distributed in parallel at intervals on the mounting crossbeam;

[0022] The front longitudinal beam unit includes a front longitudinal beam body;

[0023] The front longitudinal beam includes a rear mounting beam and a front longitudinal beam body; the front longitudinal beam body is connected to the mounting crossbeam via the rear mounting beam.

[0024] The front longitudinal beam is an arc-shaped beam; the rear mounting beam is perpendicular to the mounting crossbeam; the upper surface of the rear mounting beam is parallel to the upper surface of the mounting crossbeam.

[0025] Each of the aforementioned front longitudinal beams is connected to the mounting beam via a reinforcing unit; the reinforcing unit includes an outer diagonal brace and / or an inner diagonal brace of the longitudinal beam; one end of each outer diagonal brace and / or inner diagonal brace is connected to the front longitudinal beam, and the other end is connected to the floor assembly.

[0026] The diagonal brace inside the longitudinal beam is connected to the connection between the rear mounting beam and the front longitudinal beam body in the front longitudinal beam body; the rear mounting beam is provided with an overlapping inclined surface; the side of the diagonal brace inside the longitudinal beam abuts against the overlapping inclined surface.

[0027] The windshield crossbeam assembly includes a front crossbeam; the front crossbeam is an internally hollow arc-shaped beam; the vertical cross-section of the front crossbeam is polygonal.

[0028] The front crossbeam includes an upper plate, a rear connecting plate, a lower plate, and a front connecting plate; the upper plate, the rear connecting plate, the lower plate, and the front connecting plate are connected in sequence in a ring shape.

[0029] The upper plate and the lower plate of the crossbeam are parallel and spaced apart; one end of the upper plate of the crossbeam is connected to the lower plate of the crossbeam through a rear connecting plate; the other end is connected to the lower plate of the crossbeam through a front connecting plate.

[0030] The front connecting plate includes a first front connecting plate; the first front connecting plate is inclined; the inclination angle of the first front connecting plate is the same as the inclination angle of the windshield; the front connecting plate includes a lower connecting plate; one end of the lower connecting plate is connected to the first front connecting plate, and the other end is connected to the lower plate of the crossbeam;

[0031] The lower connecting plate includes a second front connecting plate and a third front connecting plate; one end of the second front connecting plate is connected to the first front connecting plate, and the other end is connected to the lower plate of the crossbeam through the third front connecting plate;

[0032] The second front connecting plate is arranged longitudinally, and the third front connecting plate is arranged obliquely; the rear connecting plate includes a first rear connecting plate and a second rear connecting plate; one end of the first rear connecting plate is connected to the upper plate of the crossbeam, and the other end is connected to the lower plate of the crossbeam through the second rear connecting plate;

[0033] The first rear connecting plate is arranged longitudinally; the second rear connecting plate is arranged at an angle.

[0034] The front longitudinal beam is equipped with a subframe mounting structure, which includes an external mounting structure and an internal mounting structure.

[0035] The external installation structure includes an installation platform; the installation platform includes a base plate, and a lateral limiting block is provided at the edge of the base plate; the installation platform is attached to the two sides of the front longitudinal beam through the base plate and the lateral limiting block.

[0036] The lateral limiting block is set perpendicular to the base horizontal plate; the base horizontal plate is provided with multiple clearance through holes;

[0037] The internal mounting structure includes a nut mounting plate, on which mounting nuts are provided;

[0038] In the subframe mounting structure, the external mounting structure is arranged on the outside of the front longitudinal beam; the internal mounting structure is distributed on the inside of the front longitudinal beam; the nut mounting plate in the internal mounting structure is riveted to the longitudinal beam.

[0039] In the external mounting structure, the mounting platform is welded to the longitudinal beam.

[0040] The front frame assembly of the A-pillar includes a front frame structure, which includes an upper frame beam and a lower frame beam. The upper frame beam is connected to the lower frame beam via a longitudinal frame beam. The upper frame beam and the lower frame beam are distributed in parallel at intervals. The front frame structure of the A-pillar is connected to the A-pillar column via the upper frame beam and the lower frame beam.

[0041] The internal frame assembly includes a central frame structure, which comprises multiple individual frame beams; the multiple adjacent individual frame beams are interconnected.

[0042] The upper crossbeam, lower crossbeam, longitudinal beam, and individual frame beam of the middle frame are square tube beams; the front longitudinal beam and the mounting crossbeam are square tube beams.

[0043] A vehicle body frame assembly, including the aforementioned front compartment frame assembly.

[0044] The advantages of this invention are:

[0045] This invention discloses a front compartment frame assembly and a vehicle body frame assembly having the front compartment frame assembly.

[0046] The front cabin frame assembly disclosed in this invention is mainly composed of an edge frame assembly, a body longitudinal beam assembly, an internal frame assembly, and a front wheel arch assembly, which can form a modular installation unit, facilitating the modular production and assembly of the front cabin frame assembly.

[0047] In addition, the beam structure disclosed in this invention is mostly square tube beam. This design can greatly reduce the production cost of the car frame assembly while ensuring the structural strength of the product. Furthermore, assembling the front compartment frame assembly with square tube beams can avoid the problem of excessive use of stamping dies in the production of traditional front compartment frame assemblies, thus reducing the development cost of stamping dies.

[0048] In addition, the present invention facilitates the arrangement of the subframe assembly under the front compartment by setting the subframe mounting structure; at the same time, it also ensures the strength and rigidity of the subframe mounting position.

[0049] The front crossbeam of this invention has a polygonal cross-section design to ensure its structural strength, while the inclined setting of the first front connecting plate can facilitate the installation and positioning of the windshield. Attached Figure Description

[0050] The following is a brief explanation of the contents of each of the accompanying drawings and the markings in the drawings:

[0051] Figure 1 This is a structural schematic diagram from a first perspective of the present invention.

[0052] Figure 2This is a structural schematic diagram from a first perspective of the present invention.

[0053] Figure 3 This is a front view of the front cabin frame assembly of the present invention.

[0054] Figure 4 This is a schematic diagram of the structure from a first-view perspective when the front longitudinal beam unit is connected to the floor crossbeam assembly in this invention.

[0055] Figure 5 This is a schematic diagram of the structure from a first-view perspective when the front longitudinal beam unit is connected to the floor crossbeam assembly in this invention.

[0056] Figure 6 This is a schematic diagram of the connection between the front longitudinal beam and the internal mounting structure in this invention.

[0057] Figure 7 This is a schematic diagram of the external mounting structure connection in this invention.

[0058] Figure 8 This is a schematic diagram of the front crossbeam in this invention.

[0059] Figure 9 This is a schematic diagram of the internal mounting structure connection in this invention.

[0060] The markings in the above figures are all:

[0061] 1. Floor assembly, 100. Floor crossbeam assembly, 2. Body longitudinal beam assembly, 3. External mounting structure, 4. Front crossbeam, 400. Windshield crossbeam assembly, 5. A-pillar front frame assembly, 6. Internal mounting structure, 7. A-pillar pillar, 8. Internal frame assembly, 9. Front wheel arch assembly, 10. Drain channel. Detailed Implementation

[0062] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and the description of the preferred embodiments.

[0063] A front cabin frame assembly includes an edge frame assembly, a body longitudinal beam assembly 2, an internal frame assembly 8, and a front wheel arch assembly 9. The front cabin frame assembly disclosed in this invention is mainly assembled from the edge frame assembly, the body longitudinal beam assembly 2, the internal frame assembly 8, and the front wheel arch assembly 9, which can form a modular installation unit, facilitating the modular production and assembly of the front cabin frame assembly.

[0064] In this invention, the edge frame assembly is mainly a frame structure around the front cabin assembly. The edge frame assembly in this invention includes a windshield crossbeam assembly 400, a floor crossbeam assembly 100, and two A-pillar front frame assemblies 5. The windshield crossbeam assembly 400 is mainly arranged at the lower edge of the windshield, and the front end of the A-pillar is mainly used for the installation and fixing of components such as vehicle water channels and waterproof walls.

[0065] Furthermore, the floor beam assembly 100 disclosed in this invention is mainly a part of the floor assembly 1, primarily the front end of the floor assembly 1, facilitating connection with the vehicle body longitudinal beam assembly 2.

[0066] The A-pillar front frame assembly 5 is mainly located on the side of the front cabin, forming the side support structure of the front cabin, and also facilitating the installation and fixing of the front fender.

[0067] In this invention, the vehicle body longitudinal beam assembly 2 is mainly the main support frame structure of the chassis.

[0068] The internal frame assembly 8 is mainly located inside the front compartment, serving as a partition and connection, and also mainly acts as a central mounting bracket to facilitate the installation and placement of other components inside the front compartment.

[0069] The front wheel arch assembly 9 is mainly used for the installation and connection of the vehicle's front suspension system.

[0070] In this invention, the windshield beam assembly 400 is connected to the floor beam assembly 100 at both ends via A-pillar uprights 7. The A-pillar uprights 7 are the lower structure of the A-pillar assembly, mainly arranged longitudinally, and are essentially part of the side wall assembly. The A-pillar uprights 7 play a good supporting and raising role.

[0071] The A-pillar post 7 can be directly connected to the floor beam assembly 100, or it can be connected to the floor beam assembly 100 through the threshold beam.

[0072] In this invention, the A-pillar front frame assembly 5 is connected to the A-pillar pillar 7; in this invention, the A-pillar front frame assembly 5 is arranged laterally; it is located on the side of the front cabin assembly, and can be used for the upper end installation and fixation of the wheel arch assembly, and can also be used with the bracket to realize the installation and fixation of the fender.

[0073] In this invention, the two ends of the internal frame assembly 8 are respectively connected to an A-pillar front frame assembly 5; this arrangement allows the internal frame assembly 8 to also play a good connecting role, better ensuring the integrity of the front cabin assembly.

[0074] In this invention, the internal frame assembly 8 is also connected to the vehicle body longitudinal beam assembly 2 via the front wheel arch assembly 9; this arrangement allows the upper and lower structures of the front compartment assembly to be directly connected, thus ensuring the structural strength of the front compartment assembly.

[0075] In this invention, the vehicle longitudinal beam assembly 2 is connected to the floor crossbeam assembly 100; based on this design, the vehicle longitudinal beam disclosed in this invention is equivalent to a segmented structure, with the front compartment assembly area being the front longitudinal beam structure and the floor assembly 1 being the rear longitudinal beam structure.

[0076] In this invention, the floor beam assembly 100 includes a mounting beam 12; the vehicle body longitudinal beam assembly 2 includes a front longitudinal beam assembly; the floor beam assembly 100 is a transverse beam structure, which is mainly used for the connection between two floor side beams 11, while the longitudinal beam assembly is mainly connected to the mounting beam 12.

[0077] In this invention, the front longitudinal beam assembly includes two spaced-apart front longitudinal beam units; the two front longitudinal beam units are spaced-apart parallel to each other on the mounting beam 12; each front longitudinal beam unit includes a front longitudinal beam body 2-2; the front longitudinal beam body 2-2 includes a rear mounting beam and a front longitudinal beam body 21; the front longitudinal beam body 21 is connected to the mounting beam 12 via the rear mounting beam; the front longitudinal beam body 21 is an arc-shaped beam; the rear mounting beam is perpendicular to the mounting beam 12; the upper end face of the rear mounting beam is parallel to the upper end face of the mounting beam 12.

[0078] The floor assembly 1 includes two floor edge beams 11; the ends of the two floor edge beams 11 are connected to mounting beams 12.

[0079] The rear ends of the two front longitudinal beam units 2-1 are respectively connected to the "installation crossbeam 12".

[0080] Furthermore, the front longitudinal beam 2-2 described in this invention includes a rear mounting beam 22 and a front longitudinal beam body 21; the rear mounting beam 22 of this invention acts as a connector, which facilitates the connection between the front longitudinal beam body 21 and the mounting crossbeam 12. In addition, the rear mounting beam 22 of this invention can also be used for the installation of the subframe, which facilitates the installation and arrangement of the subframe in the front compartment area.

[0081] In this invention, the front longitudinal beam body 21 is connected to the mounting crossbeam 12 via the rear mounting beam 22; the front longitudinal beam body 21 is an arc-shaped beam; the arc-shaped beam can change the collision path transmission of the vehicle body longitudinal beam assembly 2.

[0082] In this invention, the rear mounting beam 22 is perpendicular to the mounting crossbeam 12; the upper surface of the rear mounting beam 22 is parallel to the upper surface of the mounting crossbeam 12; the rear mounting beam 22, as an independent "connector" module, simplifies the connection interface between the front longitudinal beam body 21 and the mounting crossbeam 12. This design makes the connection more standardized and robust, improving the rigidity and strength of the joint.

[0083] The rear mounting beam 22 is perpendicular to the mounting crossbeam 12 and its upper surface is parallel, forming a standard "T-shaped" rigid node. This structure can efficiently disperse and transfer the collision force and driving load transmitted from the longitudinal beam to the transverse mounting crossbeam 12 and the entire front body structure, thereby improving the overall torsional stiffness and bending stiffness of the vehicle body.

[0084] This is the core advantage of the curved front longitudinal beam body 21. In a frontal collision (especially an offset collision): guiding and changing the path: the curved beam can cleverly guide the collision force to be transmitted rearward along its curved direction, consciously directing part of the impact force to the stronger longitudinal beam root, sill beam and side structure, avoiding the impact force being too concentrated and directly intruding into the passenger compartment.

[0085] The arc-shaped structure itself can provide a more stable and gradual deformation mode during the crushing process. Combined with the crushing induction groove of the longitudinal beam itself, it can achieve more efficient step-by-step energy absorption and absorb more collision energy.

[0086] In an offset collision, a good force transmission path can reduce torsion and lateral displacement at the front of the vehicle, helping to maintain the integrity of the passenger compartment.

[0087] The rear mounting beam 22 also functions as the front mounting point for the subframe, which is a very important advantage. It integrates the connection point between the body structure and the chassis system, resulting in a compact layout: saving front compartment space and freeing up more space for the placement of components such as the suspension and steering system.

[0088] The arc-shaped front longitudinal beam body 21 of the present invention protects the occupants by guiding and absorbing collision energy.

[0089] The rear mounting beam 22 strengthens the connection nodes, integrates the subframe mounting function, and improves the overall vehicle rigidity.

[0090] Furthermore, in this invention, the distance between the two front longitudinal beams 2-2 is less than the length of the mounting crossbeam 12; this arrangement can reduce the lateral space occupied by the front longitudinal beams 2-2, facilitating the subsequent arrangement and placement of the suspension and tires.

[0091] In this invention, the front longitudinal beam 2-2 is connected to the mounting beam 12 through a reinforcing unit; the setting of the reinforcing unit ensures the structural strength at the connection between the front longitudinal beam 2-2 and the mounting beam 12; each front longitudinal beam 2-2 is connected to the mounting beam 12 through a reinforcing unit.

[0092] In this invention, the reinforcing unit includes an outer diagonal brace 24 and / or an inner diagonal brace 23 of the longitudinal beam; one end of each of the outer diagonal brace 24 and / or the inner diagonal brace 23 is connected to the front longitudinal beam 2-2, and the other end is connected to the floor assembly 11-1; the outer diagonal brace 24 and the inner diagonal brace 23 of the longitudinal beam are distributed on opposite sides of the front longitudinal beam 2-2, forming two triangular structures, thereby better ensuring the structural stability and strength of the connection between the front longitudinal beam 2-2 and the mounting beam 12.

[0093] In this invention, the longitudinal beam external diagonal brace 24 is connected to both the floor edge beam 11 and the mounting beam 12. Based on this design, the longitudinal beam external diagonal brace 24 can not only act as a reinforcing member, but also as a connecting member, ensuring the stability of the connection between the floor edge beam 11 and the mounting beam 12.

[0094] In this invention, the diagonal brace 23 inside the longitudinal beam is connected at the connection between the rear mounting beam 22 and the front longitudinal beam body 21 in the front longitudinal beam body 2-2; the diagonal brace 23 inside the longitudinal beam is connected at the connection between the rear mounting beam 22 and the front longitudinal beam body 21; this arrangement effectively ensures the structural strength of the front longitudinal beam body 2-2, while also ensuring the structural strength of the connection between the rear mounting beam 22 and the front longitudinal beam body 21.

[0095] Furthermore, the rear mounting beam 22 in this invention is provided with an overlapping inclined surface; the side of the longitudinal beam inner diagonal brace 23 abuts against the overlapping inclined surface; the overlapping inclined surface plays an installation and positioning role, and can also abut against the side of the longitudinal beam inner diagonal brace 23. Based on this design, the structural strength of the connection between the front longitudinal beam assembly 2 and the rear longitudinal beam assembly 1 can be better guaranteed.

[0096] Furthermore, in this invention, a reinforcing diagonal brace 13 is provided at the connection between the floor edge beam 11 and the mounting beam 12 bracket; one end of the reinforcing diagonal brace 13 is connected to the mounting beam 12, and the other end is connected to the floor edge beam 11; the reinforcing diagonal brace 13 of this invention is arranged at the corner where the floor edge beam 11 and the mounting beam 12 are connected, thereby ensuring the structural strength of the floor assembly 11-1.

[0097] Furthermore, the windshield crossbeam assembly 400 in this invention includes a front crossbeam 4; the front crossbeam 4 is an internally hollow arc-shaped beam; the vertical cross section of the front crossbeam 4 is polygonal; the crossbeam structure disclosed in this invention is mainly arranged at the rear end of the front cabin assembly, at the lower edge of the windshield; the basic function of the crossbeam structure of this invention is to ensure the strength of the rear end of the front cabin assembly; at the same time, to realize the connection of the left and right A-pillar areas of the side assembly 2; and at the same time, to facilitate the limitation and positioning of the installation position of the instrument panel and the windshield.

[0098] The beam structure disclosed in this invention is mainly arranged at the rear end of the front cabin, between the left and right A-pillars.

[0099] Its main function is to ensure the structural strength of the front end of the vehicle body frame. In addition, it can also serve as a connector to facilitate the positioning of the lower end of the windshield and the front end of the dashboard.

[0100] In this invention, the crossbeam structure mainly includes a front crossbeam 4; the front crossbeam 4 is the main structure of the crossbeam structure, and in this invention, the front crossbeam 4 is an internally hollow arc-shaped beam; this setting can not only reduce the weight of the front crossbeam 4, but also ensure the structural strength of the front crossbeam 4, and increase the difficulty of deformation of the front end of the front crossbeam 4 during a collision. In this invention, the front crossbeam 4 has a structure that protrudes into the front cabin space. This setting can also increase the arrangement space of the instrument panel to a certain extent and optimize the arrangement of internal components of the instrument panel; while the front end and lower end of the front crossbeam 4 are mainly used for the installation and connection of the vehicle's water channel 10 and firewall.

[0101] In this invention, the front crossbeam 4 has a polygonal vertical cross section. The polygonal structural design can effectively ensure the structural strength of the front crossbeam 4, while increasing the difficulty of deformation of the front crossbeam 4. At the same time, the polygonal design facilitates the overlapping and positioning of the front crossbeam 4 with adjacent components.

[0102] Furthermore, in this invention, the front crossbeam 4 includes an upper crossbeam plate 41, a rear connecting plate 44, a lower crossbeam plate 42, and a front connecting plate 43; the upper crossbeam plate 41, the rear connecting plate 44, the lower crossbeam plate 42, and the front connecting plate 43 are connected in sequence in a ring distribution; the front crossbeam 4 of this invention has a ring structure, which is essentially a type of tubular beam. This structure not only ensures the strength of the front crossbeam 4 itself, but also facilitates actual production.

[0103] In actual production, the upper plate 41 of the crossbeam, the rear connecting plate 44, the lower plate 42 of the crossbeam, and the front connecting plate 43 can be an integral structure or a separate structure. Adjacent plates can be connected by welding; the integral structure is more commonly used.

[0104] In this invention, the upper plate 41 and the lower plate 42 of the crossbeam are parallel and spaced apart. One end of the upper plate 41 is connected to the lower plate 42 of the crossbeam through a rear connecting plate 44, and the other end is connected to the lower plate 42 of the crossbeam through a front connecting plate 43. In this invention, the upper plate 41 of the crossbeam is an upper flat plate, and the lower plate 42 of the crossbeam is a lower flat plate, which helps to ensure the flatness of the upper and lower ends of the front crossbeam 4 and facilitates the subsequent overlapping and installation with adjacent components.

[0105] In this invention, the rear connecting plate 44 is arranged on the side closer to the driver's cab, and the front connecting plate 43 is arranged on the side of the front compartment; the rear connecting plate 44 and the front connecting plate 43 form a hollow box structure.

[0106] In this invention, the front connecting plate 43 includes a first front connecting plate 431; the first front connecting plate 431 is inclined; in addition to serving as a connecting plate, the first front connecting plate 431 also serves as an overlapping plate to facilitate the overlapping installation of the windshield on the front crossbeam 4.

[0107] In actual design, the tilt angle of the first front connecting plate 431 is required to be the same as the tilt angle of the windshield; this is mainly to facilitate the installation and positioning between the front crossbeam 4 and the windshield.

[0108] Furthermore, in this invention, the front connecting plate 43 includes a lower connecting plate 432; one end of the lower connecting plate 432 is connected to the first front connecting plate 431, and the other end is connected to the lower plate 42 of the crossbeam; the lower connecting plate 432 is a lower connecting plate, which facilitates the connection between the first front connecting plate 431 and the lower plate 42 of the crossbeam, and plays a good bridging and supporting role.

[0109] In this invention, the lower connecting plate 432 includes a second front connecting plate 4321 and a third front connecting plate 4322; one end of the second front connecting plate 4321 is connected to the first front connecting plate 431, and the other end is connected to the lower plate 42 of the crossbeam through the third front connecting plate 4322; the third front connecting plate 4322 and the second front connecting plate 4321 are also connecting plate structures, which mainly play a good bridging and connecting role, and also facilitate the installation and connection of the water channel 10 and the firewall.

[0110] Furthermore, in this invention, the second front connecting plate 4321 is arranged longitudinally, and the second front connecting plate 4321 is the front end plate of the front connecting plate 43, which facilitates the installation and connection with the water trough 10; while the third front connecting plate 4322 is arranged at an angle, which plays a good role in connection and avoidance.

[0111] In this invention, the rear connecting plate 44 includes a first rear connecting plate 441 and a second rear connecting plate 442; one end of the first rear connecting plate 441 is connected to the upper plate 41 of the crossbeam, and the other end is connected to the lower plate 42 of the crossbeam through the second rear connecting plate 442; the first rear connecting plate 441 is arranged longitudinally; the second rear connecting plate 442 is arranged obliquely; the cooperative use of the first rear connecting plate 441 and the second rear connecting plate 442 of this invention can facilitate the connection between the upper plate 41 of the crossbeam and the lower plate 42 of the crossbeam; at the same time, the second rear connecting plate 442 mainly plays a good connecting and avoidance role, facilitating the connection between the first rear connecting plate 441 and the lower plate 42 of the crossbeam.

[0112] The two ends of the front crossbeam 4 are fixedly connected to the corresponding positions of the left and right A-pillars by welding and bolting; specifically, it is attached to the crossbeam 51 of the frame of the front frame assembly 5 of the A-pillar.

[0113] Specifically, the two ends of the front crossbeam 4 are firmly connected to the left and right A-pillar front frame assemblies 5, forming a high-rigidity transverse annular frame at the rear of the front compartment of the vehicle. Based on this design, a key annular structure is formed: after the front crossbeam 4 connects with the left and right A-pillars, it together constitutes a high-strength annular frame surrounding the windshield. This annular structure is a crucial link in the force transmission path during frontal collisions and roof crushing, which can greatly improve the overall torsional rigidity and collision safety of the vehicle body.

[0114] The present invention discloses a crossbeam structure, which is mainly installed at the rear end of the front compartment assembly of the automobile body, specifically at the lower edge of the windshield; at the front end of the dashboard, and laterally connected to the A-pillar area on the left and right sides of the vehicle body.

[0115] The front crossbeam 4 is an arc-shaped beam that protrudes into the front compartment of the vehicle. This arc design not only follows the contour of the windshield, but also provides more space for the rear of the dashboard.

[0116] The vertical cross-section of the front crossbeam 4 is a closed polygon, forming a hollow tubular (or box-shaped) beam structure. This hollow polygonal cross-section design ensures excellent structural strength, stiffness, and resistance to impact deformation while achieving effective weight reduction.

[0117] Specifically, the polygonal cross-section is formed by four main parts connected in sequence to form a closed ring structure. The four main parts are: the upper plate 41 of the crossbeam, the rear connecting plate 44, the lower plate 42 of the crossbeam, and the front connecting plate 43.

[0118] The upper crossbeam plate 41 and the lower crossbeam plate 42 are arranged in a roughly parallel and spaced manner. The upper crossbeam plate 41 forms the upper surface of the front crossbeam 4 and is usually flat to facilitate connection with other upper components of the vehicle body; the lower crossbeam plate 42 forms the bottom surface of the front crossbeam 4 and is also flat to ensure the flatness of the mounting base.

[0119] Rear connecting plate 44: Located on the side closest to the cab (i.e., the rear of the vehicle). It connects the rear end of the upper crossbeam plate 41 to the rear end of the lower crossbeam plate 42.

[0120] Front connecting plate 43: Located on the side near the front compartment of the vehicle (i.e., the front of the vehicle). It connects the front end of the upper crossbeam plate 41 to the front end of the lower crossbeam plate 42.

[0121] Thus, the upper plate 41 of the crossbeam, the rear connecting plate 44, the lower plate 42 of the crossbeam, and the front connecting plate 43 together form a hollow, high-strength box-shaped section.

[0122] The front panel 43 is a key component for facing the front cabin and mounting the windshield, and its structure is further refined:

[0123] First front connecting plate 431: As the upper main body of the front connecting plate 43, it is inclined. Its inclination angle is preferably designed to be the same as the installation inclination angle of the windshield, so as to directly serve as the mounting overlap surface and positioning surface of the lower edge of the windshield.

[0124] Lower connecting plate 432: Used to connect the lower edge of the first front connecting plate 431 and the front edge of the lower beam plate 42. This lower connecting plate 432 typically consists of two parts:

[0125] The second front connecting plate 4321 is basically arranged along the longitudinal direction of the vehicle, and its upper end is connected to the first front connecting plate 431. The second front connecting plate 4321 forms the frontmost vertical surface of the front crossbeam 4, which facilitates the installation and connection with the water channel 10 of the front compartment.

[0126] The third front connecting plate 4322 is arranged at a certain angle, with its upper end connected to the lower end of the second front connecting plate 4321 and its lower end connected to the lower plate 42 of the crossbeam. The third front connecting plate 4322 serves as a transition and clearance space, and also provides a connection surface for the installation of the firewall.

[0127] First rear connecting plate 441: It is basically arranged along the longitudinal direction of the vehicle, and its upper end is connected to the upper plate 41 of the crossbeam.

[0128] The second rear connecting plate 442 is arranged at a certain angle, with its upper end connected to the lower end of the first rear connecting plate 441 and its lower end connected to the lower plate of the crossbeam 42. The second rear connecting plate 442 realizes a smooth transition from the first rear connecting plate 441 to the lower plate of the crossbeam 42, and its inclined design can also provide necessary clearance space for pipelines or other components.

[0129] Implementation methods and advantages:

[0130] In actual manufacturing, the aforementioned upper beam plate 41, rear connecting plate 44, lower beam plate 42, and front connecting plate 43 can be manufactured into a complete annular cross-section part through an integral stamping process, which has the advantages of good rigidity and high production efficiency. Alternatively, a split structure can be adopted, where each plate is manufactured separately and then connected into a whole by welding. This method has lower requirements for molds and greater flexibility.

[0131] The beam structure provided in this embodiment of the invention integrates the following beneficial effects:

[0132] High strength and lightweight: The hollow polygonal box-shaped cross-section combined with the curved beam body gives it extremely high bending and torsional stiffness and collision energy absorption capacity, while achieving the goal of lightweighting.

[0133] Functional integration: A single component integrates multiple functions such as structural reinforcement, connection of the left and right A pillars, positioning and installation of the windshield, support and installation of the dashboard, connection of the water channel 10 and firewall, etc., simplifying the front structure of the vehicle body.

[0134] Space optimization: The forward-protruding arc design provides more space for electrical components, air conditioning systems, and other equipment at the rear of the dashboard.

[0135] Furthermore, in this invention, a subframe mounting structure is provided on the front longitudinal beam 2-2; the subframe mounting structure includes an external mounting structure 3 and an internal mounting structure 6; the external mounting structure is arranged on the outside of the front longitudinal beam 2-2; the internal mounting structure is distributed on the inside of the front longitudinal beam 2-2; the nut mounting plate in the internal mounting structure is riveted to the longitudinal beam; the mounting platform in the external mounting structure is welded to the longitudinal beam; the external mounting structure 3 includes a mounting platform 301; the mounting platform 301 includes a base cross plate 31, the base cross plate 31 A lateral limiting block 32 is provided at the edge; the mounting platform 301 is attached to the two sides of the longitudinal beam through the base plate 31 and the lateral limiting block 32; the internal mounting structure 6 includes a nut mounting plate 61, on which a mounting nut 62 is provided; in the subframe mounting structure, the external mounting structure 3 is arranged on the outside of the front longitudinal beam 2-2; the internal mounting structure 6 is distributed on the inside of the front longitudinal beam 2-2; the nut mounting plate 61 in the internal mounting structure 6 is riveted to the longitudinal beam; the mounting platform 301 in the external mounting structure 3 is welded to the front longitudinal beam 2-2.

[0136] In this invention, the external mounting structure 3 includes a mounting platform 301; the mounting platform 301 includes a base horizontal plate 31, and a lateral limiting block 32 is provided at the edge of the base horizontal plate 31; the mounting platform 301 is attached to the two sides of the front longitudinal beam 2-2 through the base horizontal plate 31 and the lateral limiting block 32; the main purpose of the subframe mounting structure disclosed in this invention is to ensure the structural strength of the connection between the front longitudinal beam 2-2 and the subframe, and it essentially acts as a connecting reinforcement.

[0137] The subframe mounting structure disclosed in this invention is mainly arranged at the lower edge of the front longitudinal beam 2-2, close to the subframe side; in subsequent use, it is mainly used to connect with the subframe to facilitate the suspension installation of the subframe.

[0138] In this invention, the external mounting structure 3 is mainly an external reinforcement. One function is to ensure the contact area with the subframe cantilever and to ensure the support force at the upper end of the subframe cantilever. Another function is to increase the local structural strength of the front longitudinal beam 2-2 and avoid the area where the front longitudinal beam 2-2 is mounted on the subframe being too weak.

[0139] The external mounting structure 3 described in this invention includes a mounting platform 301; the mounting platform 301 is essentially an external connector, which is connected to the front longitudinal beam 2-2 by welding.

[0140] Furthermore, the installation platform 301 in this invention includes a base horizontal plate 31, and a lateral limiting block 32 is provided at the edge of the base horizontal plate 31. The installation platform 301 is attached to the two sides of the front longitudinal beam 2-2 through the base horizontal plate 31 and the lateral limiting block 32. The basic structure of the installation platform 301 of this invention is an L-shaped structure, which is attached to the lower side and outer side of the front longitudinal beam 2-2 during subsequent installation. This setting can realize the self-positioning between the installation platform 301 and the front longitudinal beam 2-2, which facilitates the installation and positioning of the installation platform 301 on the front longitudinal beam 2-2.

[0141] The lateral limiting block 32 described in this invention is hollow inside; the hollow design of the lateral limiting block 32 can reduce the weight of the lateral limiting block 32 and reduce the installation platform 301 without excessively increasing the weight of the whole vehicle.

[0142] In this invention, the lateral limiting block 32 and the base horizontal plate 31 are arranged perpendicular to each other. This arrangement makes the installation platform 301 form an L-shaped structure. The lateral limiting block 32 is attached to the outer side of the front longitudinal beam 2-2, and the base horizontal plate 31 is attached to the lower side of the front longitudinal beam 2-2. Through the attachment of the two planes, the stability and accuracy of the connection between the installation platform 301 and the front longitudinal beam 2-2 can be guaranteed, and the risk of the installation platform 301 shifting on the front longitudinal beam 2-2 can be reduced.

[0143] In this invention, the lateral limiting block 32 includes a vertical plate 321 and an inclined plate 322. One end of the inclined plate 322 is connected to the vertical plate 321, and the other end is connected to the base horizontal plate 31. Based on the above design, the vertical plate 321 acts as a lateral positioning plate, and the inclined plate 322 is an inclined support plate, so that the vertical plate 321, the inclined plate 322 and the base horizontal plate 31 form a triangular structure, which effectively ensures the strength of the lateral limiting block 32.

[0144] In this invention, the basic horizontal plate 31 is provided with a plurality of clearance through holes 33; in this invention, the clearance through holes 33 serve two purposes: one is to provide good clearance, and the other is to provide good material reduction; here, clearance mainly avoids the fasteners between the subframe and the front longitudinal beam 2-2 passing through the mounting platform 301; it also avoids the rivet passing through when the internal mounting structure 6 is connected to the front longitudinal beam 2-2.

[0145] The subframe mounting structure described in this invention also includes an internal mounting structure 6, which includes a nut mounting plate 61 and mounting nuts 62. In this invention, the internal mounting structure 6 mainly provides subframe mounting points and optimizes the structural strength of the subframe mounting position on the front longitudinal beam 2-2.

[0146] In this invention, the nut mounting plate 61 is arranged inside the front longitudinal beam 2-2; the nut mounting plate 61 is attached to the bottom surface of the inner cavity of the front longitudinal beam 2-2, and is subsequently fixed by riveting.

[0147] A mounting nut 62 is provided on the nut mounting plate 61 to facilitate the subsequent fasteners to pass through the subframe and connect to the front longitudinal beam 2-2.

[0148] In addition, the nut mounting plate 61 described in this invention includes a mounting plate body, and a lateral flange plate 63 is provided at the edge of the mounting plate body. The mounting plate body is the main structure of the nut mounting plate 61, and the lateral flange plate 63 plays a good role in lateral limiting and reinforcement. It can increase the contact area with the inner wall of the front longitudinal beam 2-2, so as to realize the installation and positioning of the front longitudinal beam 2-2 and the nut mounting plate 61. In addition, it also acts as a reinforcing rib to ensure the structural strength at the edge of the nut mounting plate 61.

[0149] The front longitudinal beam 2-2 has a hollow interior forming a cavity 201; the front longitudinal beam 2-2 is provided with the subframe mounting structure; the external mounting structure 3 of the subframe mounting structure is arranged on the outside of the front longitudinal beam 2-2; the internal mounting structure 6 is distributed on the inside of the front longitudinal beam 2-2; in this invention, the internal mounting structure 6 is arranged inside the front longitudinal beam 2-2, and the nut mounting plate 61 in the internal mounting structure 6 is riveted to the front longitudinal beam 2-2; while the external mounting structure 3 is installed at the lower part of the front longitudinal beam 2-2, specifically, the mounting platform 301 in the external mounting structure 3 is welded to the front longitudinal beam 2-2; based on the above design, the installation and connection of the subframe mounting structure on the front longitudinal beam 2-2 is facilitated, and the cantilever on the subframe is subsequently connected to the mounting nut 62 in the internal mounting structure 6 by fasteners, thereby realizing the installation and connection of the subframe on the front longitudinal beam 2-2.

[0150] The external mounting structure 3 and internal mounting structure 6 of this invention mainly provide subframe mounting points and optimize the structural strength of the subframe mounting position on the front longitudinal beam 2-2.

[0151] Furthermore, the A-pillar front frame assembly 5 in this invention includes an A-pillar front frame structure, which includes an upper frame beam 51 and a lower frame beam 52; the upper frame beam 51 is connected to the lower frame beam 52 through a frame longitudinal beam 53; the upper frame beam 51 and the lower frame beam 52 are distributed in parallel at intervals; the A-pillar front frame structure is connected to the A-pillar upright 7 through the upper frame beam 51 and the lower frame beam 52; the A-pillar front frame assembly 5 of this invention is mainly an I-shaped frame structure, which can play a good supporting and raising role, and also facilitates the installation and fixing of the fender with the bracket.

[0152] In this invention, the internal frame assembly 8 includes a central frame structure, which includes multiple individual frame beams 81; multiple adjacent individual frame beams 81 are interconnected; the individual frames are assembled into the internal frame structure. This arrangement facilitates the production and processing of the central frame structure. Here, individual frame beam 81 is a general term. In specific implementation, the shape, size and connection method of the individual frame beams 81 can be selected according to actual needs.

[0153] Furthermore, in this invention, the upper crossbeam 51, lower crossbeam 52, longitudinal beam 53, and single frame beam 81 of the middle frame are square tube beams; the front longitudinal beam body 2-2 and the mounting crossbeam 12 are square tube beams. This arrangement can ensure the structural strength of the product while greatly reducing the production cost of the chassis assembly. In addition, by assembling the body longitudinal beam assembly 2 with square tube beams, the problem of needing to use stamping dies for the production of the traditional body longitudinal beam assembly 2 can be avoided.

[0154] In this invention, the main beams and other core load-bearing components are all made of standard square tubular beams.

[0155] Standardized components are easy to procure, low in cost, and of stable quality.

[0156] This invention, employing the aforementioned design, eliminates the need for large stamping dies: traditional vehicle body longitudinal beams typically require the development of expensive, large stamping dies for production. This solution, by using standard square tubing and a splicing process, completely avoids this substantial initial investment and the associated die development cycle.

[0157] The production process is simplified to material preparation, processing (which may include end forming and drilling), and welding. It is more suitable for small-batch, multi-model, or rapid prototyping manufacturing.

[0158] The square tube beam itself is a closed section, which has excellent bending and torsional stiffness and can meet the basic mechanical performance requirements of the vehicle body longitudinal beam.

[0159] By precisely calculating and optimizing the wall thickness and material of the square tube beam (such as using high-strength steel), lightweighting can be achieved while ensuring strength.

[0160] By adjusting the combination of square tube beams with different strengths and specifications, the collision force transmission path in different areas (such as front energy absorption, middle rigidity, and rear energy absorption) can be optimized, thereby improving vehicle safety.

[0161] By adopting standard square tube beams for modular assembly, the production method of the front cabin assembly has been successfully transformed from relying on high-cost, long-cycle stamping processes to a flexible, low-cost, and easy-to-implement manufacturing solution.

[0162] A vehicle body frame assembly includes the aforementioned front compartment frame assembly; specifically, the vehicle body frame assembly structure of the front compartment frame assembly has advantages such as convenient production, low production cost, and strong integrity.

[0163] Obviously, the specific implementation of this invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of this invention are within the protection scope of this invention.

Claims

1. A front cabin frame assembly, characterized in that, This includes the edge frame assembly, body longitudinal beam assembly, internal frame assembly, and front wheel arch assembly; The edge frame assembly includes a windshield crossbeam assembly, a floor crossbeam assembly, and two A-pillar front frame assemblies; The windshield beam assembly is connected to the floor beam assembly at both ends via A-pillars; The front frame assembly of the A-pillar is connected to the A-pillar upright; The internal frame assembly is connected at both ends to an A-pillar front frame assembly; The internal frame assembly is also connected to the body longitudinal beam assembly via the front wheel arch assembly; The vehicle body longitudinal beam assembly is connected to the floor crossbeam assembly.

2. The front cabin frame assembly according to claim 1, characterized in that, The floor crossbeam assembly includes mounting crossbeams; the vehicle longitudinal beam assembly includes a front longitudinal beam assembly. The front longitudinal beam assembly includes two spaced-apart front longitudinal beam units; The two front longitudinal beam units are distributed in parallel at intervals on the mounting crossbeam; The front longitudinal beam unit includes a front longitudinal beam body; The front longitudinal beam includes a rear mounting beam and a front longitudinal beam body; the front longitudinal beam body is connected to the mounting crossbeam via the rear mounting beam. The front longitudinal beam is an arc-shaped beam; the rear mounting beam is perpendicular to the mounting crossbeam; the upper surface of the rear mounting beam is parallel to the upper surface of the mounting crossbeam.

3. The front cabin frame assembly according to claim 2, characterized in that, Each of the aforementioned front longitudinal beams is connected to the mounting beam via a reinforcing unit; the reinforcing unit includes an outer diagonal brace and / or an inner diagonal brace of the longitudinal beam; one end of each outer diagonal brace and / or inner diagonal brace is connected to the front longitudinal beam, and the other end is connected to the floor assembly.

4. The front cabin frame assembly according to claim 3, characterized in that, The diagonal brace inside the longitudinal beam is connected to the connection between the rear mounting beam and the front longitudinal beam body in the front longitudinal beam body; the rear mounting beam is provided with an overlapping inclined surface; the side of the diagonal brace inside the longitudinal beam abuts against the overlapping inclined surface.

5. A front cabin frame assembly according to claim 3, characterized in that, The windshield crossbeam assembly includes a front crossbeam; the front crossbeam is an internally hollow arc-shaped beam; the vertical cross-section of the front crossbeam is polygonal.

6. A front cabin frame assembly according to claim 5, characterized in that, The front crossbeam includes an upper plate, a rear connecting plate, a lower plate, and a front connecting plate; the upper plate, the rear connecting plate, the lower plate, and the front connecting plate are connected in sequence in a ring shape. The upper plate and the lower plate of the crossbeam are parallel and spaced apart; one end of the upper plate of the crossbeam is connected to the lower plate of the crossbeam through a rear connecting plate; the other end is connected to the lower plate of the crossbeam through a front connecting plate. The front connecting plate includes a first front connecting plate; the first front connecting plate is inclined; the inclination angle of the first front connecting plate is the same as the inclination angle of the windshield; the front connecting plate includes a lower connecting plate; one end of the lower connecting plate is connected to the first front connecting plate, and the other end is connected to the lower plate of the crossbeam; The lower connecting plate includes a second front connecting plate and a third front connecting plate; one end of the second front connecting plate is connected to the first front connecting plate, and the other end is connected to the lower plate of the crossbeam through the third front connecting plate; The second front connecting plate is arranged longitudinally, and the third front connecting plate is arranged obliquely; the rear connecting plate includes a first rear connecting plate and a second rear connecting plate; one end of the first rear connecting plate is connected to the upper plate of the crossbeam, and the other end is connected to the lower plate of the crossbeam through the second rear connecting plate; The first rear connecting plate is arranged longitudinally; the second rear connecting plate is arranged at an angle.

7. A front cabin frame assembly according to claim 2, characterized in that, The front longitudinal beam is provided with a subframe mounting structure, which includes an external mounting structure and an internal mounting structure. The external installation structure includes an installation platform; the installation platform includes a base plate, and a lateral limiting block is provided at the edge of the base plate; the installation platform is attached to the two sides of the front longitudinal beam through the base plate and the lateral limiting block. The lateral limiting block is set perpendicular to the base horizontal plate; the base horizontal plate is provided with multiple clearance through holes; The internal mounting structure includes a nut mounting plate, on which mounting nuts are provided; In the subframe mounting structure, the external mounting structure is arranged on the outside of the front longitudinal beam; the internal mounting structure is distributed on the inside of the front longitudinal beam; the nut mounting plate in the internal mounting structure is riveted to the longitudinal beam. In the external mounting structure, the mounting platform is welded to the longitudinal beam.

8. A front cabin frame assembly according to claim 1, characterized in that, The front frame assembly of the A-pillar includes a front frame structure, which includes an upper frame beam and a lower frame beam. The upper frame beam is connected to the lower frame beam via a longitudinal frame beam. The upper frame beam and the lower frame beam are distributed in parallel at intervals. The front frame structure of the A-pillar is connected to the A-pillar column via the upper frame beam and the lower frame beam. The internal frame assembly includes a central frame structure, which comprises multiple individual frame beams; the multiple adjacent individual frame beams are interconnected.

9. A front cabin frame assembly according to claim 8, characterized in that, The upper crossbeam, lower crossbeam, longitudinal beam, and individual frame beam of the middle frame are square tube beams; the front longitudinal beam and the mounting crossbeam are square tube beams.

10. A vehicle body frame assembly, characterized in that, Includes the front cabin frame assembly as described in any one of claims 1-9.

Images