Front structure of frame and vehicle

Abstract

The invention provides a front structure of a frame and a vehicle, which comprises a front wall front extension plate, a front partition plate lower mounting plate, a front wall plate lower plate, a front floor front cross beam, a left / right A-pillar inner plate, a left / right A-pillar outer plate, a cab of the vehicle formed by connecting a left / right A-pillar outer plate and a cab front end, and a closed first cavity formed by the front wall plate lower plate and the front floor front cross beam; the front wall front extending plate and the front partition plate lower mounting plate define a second cavity, the left / right A column inner plate and the left / right A column outer plate form a closed third cavity on the left side and the right side of the cab, and the first cavity, the third cavity and the second cavity are sequentially connected to define a first frame structure. The first frame structure is located on the front portion of the vehicle frame, the structural strength of the front end of the driving cab is improved through the square-like frame formed by connecting the first cavity, the third cavity and the second cavity, and then the safety of the vehicle driving cab and the front end of the driving cab, the safety of passengers and the NVH performance are improved.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle body parts, and in particular to a front structure of a vehicle frame and a vehicle. Background Art

[0002] With the continuous development of society, people not only need cars to meet daily travel needs, but also need cars to have excellent safety performance, provide good protection for passengers, and have good NVH performance.

[0003] Figure 1 The A-body structure diagram of the front end of the cockpit of the existing model is shown in the figure. Figure 1 As shown, component 1 is a single-piece structure with an uneven surface, and component 2 is a single-piece structure with an uneven surface. Component 1 and component 2 do not constitute a closed cavity structure. The two are connected together in a surface-to-surface overlap manner and then connected to the left and right sides of the vehicle body.

[0004] Figure 2 The B body structure diagram of the front end of the cockpit of the existing model is shown in the figure. Figure 2 As shown, components 1, 2, and 3 are monolithic structures with uneven surfaces. Components 1 and 3 form a closed cavity structure, while component 2 does not form a closed cavity structure with either component 1 or component 3. After component 1 and 3 form a closed cavity, they form a single unit with component 2 and are then connected to the left and right sides of the vehicle body.

[0005] Figure 3 The C-body structure diagram of the front end of the cockpit of the existing model is shown in the figure. Figure 3 As shown, components 1, 2, 3, and 4 are monolithic structures with uneven surfaces. Components 2 and 4 form a closed cavity structure, while components 1 and 2, 1 and 3, and 2 and 3 do not form a closed cavity structure. After components 2 and 4 form a closed cavity, they form a single unit with components 1 and 3, and are then connected to the left and right sides of the vehicle body.

[0006] In the three aforementioned vehicle body structures, the annular body structure, where components form a closed cavity around the cockpit, especially at the front of the cockpit, is rarely used. This, to a certain extent, affects the safety of the vehicle cockpit, the safety of passengers, and the improvement of NVH performance, failing to meet the demand for improved overall vehicle performance. Therefore, how to improve the safety of the vehicle cockpit and the front of the cockpit, the safety of passengers, and the NVH performance has become a technical problem that those skilled in the art urgently need to solve. Summary of the Invention

[0007] The present application provides a front structure of a vehicle frame and a vehicle, which can solve the problems of safety of the vehicle cockpit and the front end of the cockpit, safety of passengers and NVH performance.

[0008] The present application provides a front structure of a vehicle frame, the front structure of the frame comprising a dash front extension plate, a front bulkhead lower mounting plate, a dash lower plate, a front floor front cross member, left / right A-pillar inner plates, and left / right A-pillar outer plates, which are connected to form a vehicle cockpit and a front end of the cockpit, the dash lower plate and the front floor front cross member are arranged in a vehicle width direction and form a first cavity closed at the lower rear portion of the front end of the cockpit, the dash front extension plate and the front bulkhead lower mounting plate are arranged in the vehicle width direction, and the dash front extension plate and the front bulkhead lower mounting plate enclose a second cavity; the left / right A-pillar inner plates extend in a vehicle front-to-rear direction, the left / right A-pillar outer plates extend in a vehicle up-down direction, and the left / right A-pillar inner plates and the left / right A-pillar outer plates form a closed third cavity on the left and right sides of the cockpit; The first cavity, the third cavity and the second cavity are sequentially connected and enclosed to form a first frame structure.

[0009] In one embodiment, the front structure of the frame further includes a dash panel front cross beam, the dash panel front cross beam and the dash panel lower plate are arranged along the vehicle width direction, and the dash panel front cross beam and the dash panel lower plate constitute a fourth cavity enclosed at the lower front end of the cockpit.

[0010] In one embodiment, the front structure of the vehicle frame further includes a left / right front beam cover plate; The front panel lower plate extends along the front and rear directions of the vehicle, and the left / right front beam sealing plates extend along the upper and lower directions of the vehicle. The front panel lower plate and the left / right front beam sealing plates respectively form a closed fifth cavity on the left and right sides of the cockpit.

[0011] In one embodiment, the fourth cavity, the fifth cavity and the first cavity are sequentially connected and enclosed to form a second frame structure.

[0012] In one embodiment, the front structure of the frame further comprises a channel arch plate; The overlapping portion of the front panel lower plate and the channel arch plate in the middle of the cockpit forms a closed sixth cavity; The first cavity and the fourth cavity are arranged opposite to each other, the sixth cavity is arranged between the first cavity and the fourth cavity, and two ends of the sixth cavity are respectively connected to the first cavity and the fourth cavity to form a first I-shaped structure.

[0013] In one embodiment, the fifth cavity, the fourth cavity, the sixth cavity and the first cavity are sequentially connected and enclosed to form two connected third frame structures.

[0014] In one embodiment, the front structure of the frame further includes a left / right front beam; The left / right front beam extends in the front-to-rear direction of the vehicle, and the left / right front beam cover plate extends in the up-down direction of the vehicle. The left / right front beam and the left / right front beam cover plate form a closed seventh cavity on the left and right sides of the front end of the cockpit; The seventh cavity and the fifth cavity are connected to each other, and the two groups of the seventh cavity and the fifth cavity are arranged opposite to each other. The fourth cavity is arranged between the two groups of the seventh cavity and the fifth cavity, and the two ends of the fourth cavity are respectively connected to one group of the seventh cavity and the fifth cavity to form a second I-shaped frame.

[0015] In one embodiment, the two fifth cavities are arranged opposite to each other, the first cavity is arranged between the two fifth cavities, and both ends of the first cavity are respectively connected to one of the fifth cavities to form a third I-shaped frame.

[0016] In one embodiment, one end of the fifth cavity is connected to the third cavity to form a T-shaped structure.

[0017] The present application also provides a vehicle, which includes the above-mentioned front structure applicable to a vehicle frame.

[0018] After adopting the above technical solution, the beneficial effects are: The present application provides a front structure of a vehicle frame and a vehicle, comprising a dash front extension plate, a front bulkhead lower mounting plate, a dash lower plate, a front floor front cross member, left / right A-pillar inner plates, and left / right A-pillar outer plates, which are connected to form a vehicle cockpit and a front end of the cockpit; the dash lower plate and the front floor front cross member are arranged in the vehicle width direction and form a first cavity enclosed at the lower rear portion of the front end of the cockpit; the dash front extension plate and the front bulkhead lower mounting plate are arranged in the vehicle width direction and enclose a second cavity; the left / right A-pillar inner plates extend in the vehicle front-to-back direction; the left / right A-pillar outer plates extend in the vehicle up-down direction; and the left / right A-pillar inner plates and the left / right A-pillar outer plates form a closed third cavity on the left and right sides of the cockpit; The first, third, and second cavities are sequentially connected to form a first frame structure. The first frame structure is located at the front of the vehicle frame. The square-shaped frame formed by the first, third, and second cavities enhances the structural strength of the front end of the cockpit, thereby improving the safety of the vehicle cockpit and the front end, as well as passenger safety and NVH performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is a schematic diagram of the A-body structure at the front end of the cockpit of the existing model.

[0021] Figure 2 This is a schematic diagram of the B-body structure at the front end of the cockpit of the existing model.

[0022] Figure 3 Schematic diagram of the C-body structure at the front end of the cockpit of the existing model.

[0023] Figure 4 This is a schematic diagram of the overall front structure of a vehicle frame provided in an embodiment of the present application.

[0024] Figure 5 A partial schematic diagram of the front structure of a vehicle frame provided in an embodiment of the present application.

[0025] Figure 6 A front schematic diagram of the front structure of a vehicle frame provided in an embodiment of the present application.

[0026] Figure 7 This is an oblique schematic diagram of the front structure of a vehicle frame provided in an embodiment of the present application.

[0027] Figure 8 The front structure of a frame provided in an embodiment of the present application Figure 6 Cross-section along AA direction.

[0028] Figure 9 The front structure of a frame provided in an embodiment of the present application Figure 6 Cross-section along BB direction.

[0029] Figure 10 A schematic diagram of the frame structure of the front structure of a vehicle frame provided in an embodiment of the present application.

[0030] Figure 11 The front structure of a frame provided in an embodiment of the present application Figure 6 Cross-section along CC direction.

[0031] Figure 12 The front structure of a frame provided in an embodiment of the present application Figure 7 Cross-section along EE direction.

[0032] Figure 13The front structure of a frame provided in an embodiment of the present application Figure 6 Cross-section along DD direction.

[0033] Reference numerals: 100-front structure of the frame; 1-Front extension panel of the front panel; 2-Front upper panel; 3- front bulkhead lower mounting plate; 4-Cash panel front cross member; 5-front panel lower plate; 6-channel arch plate; 7-Front floor front cross member; 8-Left / right A-pillar inner panel; 9-Left / right A-pillar outer panel; 10-left / right front beam; 11-Left / right front beam sealing plate; 57 - first cavity; 13 - second cavity; 89 - third cavity; 45 - fourth cavity; 511 - fifth cavity; 56 - sixth cavity; 1011 - seventh cavity; 111-first frame structure; 112-second frame structure; 113-third frame structure; 211-first I-shaped structure; 212-second I-shaped frame; 213-third I-shaped frame; 311-T structure. DETAILED DESCRIPTION

[0034] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0035] It should be clear that the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0036] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The singular forms "a", "an", "the" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise.

[0037] It should be understood that the term "and / or" as used herein is merely a description of the relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0038] With the continuous development of society, people have higher and higher demands for automobiles. In order to improve the safety of the vehicle cockpit and the front end of the cockpit, the safety of the passengers and the NVH performance, and further enhance the comprehensive strength of the vehicle cockpit and the front end of the cockpit in the front and back, left and right, and up and down directions, the present application provides a front structure of the vehicle frame. Figure 4 This is a schematic diagram of the front structure of a vehicle frame provided in an embodiment of the present application. Figure 5 This is a partial schematic diagram of the front structure of a vehicle frame provided in an embodiment of the present application. Figure 6 This is a front view schematic diagram of a front structure of a vehicle frame provided in an embodiment of the present application, as shown in FIG. Figures 4 to 6 As shown, the front structure 100 of the vehicle frame includes eleven components with uneven surfaces: a front extension plate 1 for the front dash, an upper plate 2 for the front dash, a lower mounting plate 3 for the front bulkhead, a front cross beam 4 for the front dash, a lower plate 5 for the front dash, a channel arch plate 6, a front cross beam 7 for the front floor, left / right A-pillar inner plates 8, left / right A-pillar outer plates 9, a left / right front beam 10 and a left / right front beam closing plate 11, which are connected and enclosed to form the cockpit and the front end of the cockpit of the vehicle frame.

[0039] Figure 7 This is an oblique schematic diagram of the front structure of a vehicle frame provided in an embodiment of the present application. Figure 8 The front structure of a frame provided in an embodiment of the present application Figure 6 The cross-section along AA direction, Figure 9 The front structure of a frame provided in an embodiment of the present application Figure 6 Please refer to the BB section of Figure 5 、 Figures 7 to 9 The front dash lower plate 5 and the front floor front cross beam 7 are arranged along the vehicle width direction and constitute a first cavity 57 closed at the lower rear part of the front end of the cockpit. The front dash front extension plate 1 and the front bulkhead lower mounting plate 3 are arranged along the vehicle width direction, and the front dash front extension plate 1 and the front bulkhead lower mounting plate 3 enclose a second cavity 13. The left / right A-pillar inner plate 8 extends along the vehicle front-rear direction, and the left / right A-pillar outer plate 9 extends along the vehicle up-down direction, and the left / right A-pillar inner plate 8 and the left / right A-pillar outer plate 9 constitute a closed third cavity 89 on the left and right sides of the cockpit.

[0040] Figure 10 A schematic diagram of the frame structure of the front structure of a vehicle frame provided in an embodiment of the present application is shown in FIG. Figure 10 As shown, the first cavity 57 , the third cavity 89 and the second cavity 13 are sequentially connected and enclosed to form a first frame structure 111 .

[0041] In the technical solution of this application, the first frame structure 111 is located at the front of the vehicle frame. The square-shaped frame formed by connecting the first cavity 57, the third cavity 89, and the second cavity 13 enhances the structural strength of the front end of the cockpit, thereby improving the safety of the vehicle cockpit and the front end of the cockpit, the safety of the occupants, and the NVH performance. In contrast, the corresponding portion of the existing vehicle body structure is typically formed by components 1 and 2 into a non-cavity structure, or by components 1 and 3 forming a cavity that is connected to other components and then connected to the left and right vehicle bodies. The other structures of the existing vehicle body do not form a complete cavity to connect and reinforce them. Therefore, the strength of the existing vehicle body structure is lower than that of the front structure 100 of the vehicle frame of this application.

[0042] The closed cavity structure enables the plates to be connected to form a hollow beam structure, which can significantly increase the section moment of inertia compared to a solid beam structure. With the same material usage, the hollow beam structure has higher bending stiffness. In addition, this closed cavity structure can form a continuous section, reducing structural deformation in the event of a vehicle collision.

[0043] In some embodiments, the cavity may be filled with damping materials to reduce the risk of resonance and improve the NVH performance of the vehicle.

[0044] In some embodiments, Figure 5 and Figure 8 As shown, the front panel lower plate 5 and the front floor front cross beam 7 are arranged along the vehicle width direction and constitute a first cavity 57 that is closed at the lower rear part of the front end of the cockpit.

[0045] Specifically, the dash panel lower panel 5 and the front floor front cross member 7 are arranged along the width of the vehicle. They are located near the driver's or passenger's footrests at the front end of the cockpit. Together, they form a first cavity 57, a closed cavity structure at the lower rear portion of the front end of the cockpit. This first cavity 57 is connected to the left and right vehicle bodies. The front floor front cross member 7 within this first cavity 57 engages the dash panel lower panel 5 from bottom to top, forming a closed cavity structure. Furthermore, the first cavity 57 extends from the bottom of the front end of the cockpit along the width of the left and right vehicle bodies, effectively resisting bending and twisting deformation, enhancing the torsional rigidity of the vehicle floor, and improving vehicle stability on bumpy roads or during aggressive driving. The cavity structure can also be filled with sound-absorbing materials or its own structure to reduce noise transmission, thereby enhancing interior quietness.

[0046] For example, the cross-section of the first cavity 57 can be approximately triangular, quadrilateral, polygonal, or other closed shapes. The dash panel lower panel 5 and the front floor front cross member 7 can be connected together by welding, bonding, riveting, or other methods, without limitation. Taking into account factors such as processing difficulty and manufacturing cost, while also taking into account the dust and water resistance requirements of the cockpit, welding combined with bonding is preferred.

[0047] In some embodiments, Figure 5 and Figure 9 As shown, the cowl front extension plate 1 and the front bulkhead lower mounting plate 3 are arranged along the vehicle width direction, and the cowl front extension plate 1 and the front bulkhead lower mounting plate 3 enclose a second cavity 13 .

[0048] Specifically, the dash front extension panel 1 and the front bulkhead lower mounting plate 3 are arranged along the vehicle width. The dash front extension panel 1 is adjacent to the lower edge of the cockpit windshield, while the front bulkhead lower mounting plate 3 is adjacent to the wiper mounting location at the front end of the cockpit (not shown). Together, they form a second cavity 13 within the closed cavity structure at the upper front end of the cockpit. This cavity 13 connects the left and right vehicle bodies. Relatively close to the driver and front passenger seats, this second cavity 13 serves as a closed frame at the upper front end of the cockpit. Through its transversely extending cavity structure, it connects the left and right A-pillars and the front windshield frame, significantly enhancing the torsional rigidity of the upper body and suppressing roof deformation during cornering or bumpy conditions. Furthermore, the cavity deformation absorbs some collision energy, preventing direct impact on the windshield and upper passenger compartment. Furthermore, it blocks the transmission path of engine noise to the cockpit.

[0049] For example, the cross-section of the second cavity 13 can be approximately triangular, quadrilateral, polygonal, or other closed shapes. The dash front extension plate 1 and the front bulkhead lower mounting plate 3 can be connected together by welding, bonding, riveting, or other methods, without limitation. Taking into account factors such as processing difficulty and manufacturing cost, while also meeting the cockpit's dust and water resistance requirements, a combination of welding and bonding is preferred.

[0050] In some embodiments, Figure 5 and Figure 9 As shown, the left / right A-pillar inner panel 8 extends along the front-rear direction of the vehicle, and the left / right A-pillar outer panel 9 extends along the up-down direction of the vehicle, and the left / right A-pillar inner panel 8 and the left / right A-pillar outer panel 9 form a closed third cavity 89 on the left and right sides of the cockpit.

[0051] Specifically, the left / right A-pillar inner panels 8 and left / right A-pillar outer panels 9 extend in both the fore-aft and up-down directions of the vehicle. They extend downward adjacent to the vehicle's A-pillars, forming a closed third cavity 89 on either side of the cockpit. This third cavity 89 effectively resists bending and twisting forces from side collisions, roof crushing, or sharp turns, preventing A-pillar deformation and cockpit intrusion. Furthermore, the third cavities 89 on either side, combined with the second cavity 13 and the first cavity 57, form an annular framework. During collisions or dynamic conditions, the third cavities 89 disperse impact forces longitudinally and transversely to the roof rails (not shown) and the front floor cross member 7, reducing localized stress concentration.

[0052] For example, the cross-section of the third cavity 89 can be approximately triangular, quadrilateral, polygonal, or other closed shapes. The left / right A-pillar inner panel 8 and the left / right A-pillar outer panel 9 can be connected by welding, bonding, riveting, or other methods, without limitation. Taking into account factors such as processing difficulty and manufacturing cost, while also meeting the cockpit's dust and water resistance requirements, a combination of welding and bonding is preferred.

[0053] In some embodiments, Figure 11 The front structure of a frame provided in an embodiment of the present application Figure 6 The cross-section along CC direction is as follows: Figure 11 As shown, the dash panel front cross beam 4 and the dash panel lower plate 5 are arranged along the vehicle width direction, and the dash panel front cross beam 4 and the dash panel lower plate 5 form a fourth cavity 45 that is closed at the lower front end of the cockpit.

[0054] Specifically, the dash front cross member 4 and dash lower panel 5 are arranged along the vehicle width, with the dash front cross member 4 adjacent to the upper portion of the dash lower panel 5. Together, they form a fourth cavity 45, a closed cavity structure at the lower front end of the cockpit. This cavity 45 connects to the left and right vehicle bodies. This fourth cavity 45, acting as a transverse framework beneath the front of the cockpit, forms a framework with the left and right front beams 10. This significantly enhances the torsional rigidity of the front vehicle body, reduces deformation during cornering and bumpy driving, and prevents localized stress concentration that can lead to structural fatigue. Furthermore, the dash front cross member 4 and the left and right front beams 10 form a continuous force transmission path, synergistically absorbing collision energy and directing impact force downward to the floor longitudinal rails (not shown), minimizing the risk of intrusion into the front of the cockpit and protecting the lower limbs of the driver and passengers.

[0055] For example, the cross-section of the fourth cavity 45 can be approximately triangular, quadrilateral, polygonal, or other closed shapes. The dash panel front cross member 4 and dash panel lower plate 5 can be connected by welding, bonding, riveting, or other methods, without limitation. Taking into account factors such as processing difficulty and manufacturing cost, while also taking into account the cockpit's dust and water resistance requirements, a combination of welding and bonding is preferred.

[0056] In some embodiments, Figure 11 As shown, the front panel lower plate 5 extends along the front and rear directions of the vehicle, and the left / right front beam sealing plates 11 extend along the upper and lower directions of the vehicle. The front panel lower plate 5 and the left / right front beam sealing plates 11 respectively form a closed fifth cavity 511 on the left and right sides of the cockpit.

[0057] Specifically, the dash panel lower panel 5 and the left / right front beam cover panels 11 extend in both the front-to-back and up-down directions of the vehicle. The left / right front beam cover panels 11 are adjacent to the lower left and right portions of the front end of the cockpit and adjacent to the left / right front beams 10. Together, they form a fifth cavity 511 of a closed cavity structure on either side of the cockpit. The fifth cavity 511 connects the left / right front beams 10 and the dash panel front cross member 4, forming a continuous load transfer path. This significantly enhances the overall bending and torsional rigidity of the front vehicle body, suppressing distortion during sharp turns or bumpy rides. Furthermore, the fifth cavity 511, combined with the third cavity 89, evenly distributes longitudinal and vertical loads to the dash panel lower panel 5, the left / right front beam cover panels 11, the left / right A-pillar inner panels 8, and the left / right A-pillar outer panels 9, reducing local stress concentration and extending the vehicle's lifespan. At the same time, the closed cavity serves as a transition structure between the left / right front beams 10 and the cockpit. During a collision, it assists the left / right front beams 10 in absorbing energy through its own deformation, while guiding the impact force to be transmitted backward along the floor longitudinal beams, reducing the risk of intrusion into the front of the cockpit.

[0058] For example, the cross-section of the fifth cavity 511 can be approximately triangular, quadrilateral, polygonal, or other closed shapes. The dash panel lower panel 5 and the left / right front beam cover panels 11 can be connected by welding, bonding, riveting, or other methods, without limitation. Taking into account factors such as processing difficulty and manufacturing cost, while also taking into account the cockpit's dust and water resistance requirements, a combination of welding and bonding is preferred.

[0059] In some embodiments, Figure 12 The front structure of a frame provided in an embodiment of the present application Figure 7 The cross-section along EE direction is as follows: Figure 5 and Figure 12 As shown, the front structure of the vehicle frame further includes a channel arch plate 6 , and the overlapping portion of the front panel lower plate 5 and the channel arch plate 6 in the middle of the cockpit forms a closed sixth cavity 56 .

[0060] Specifically, the front panel lower plate 5 is arranged along the vehicle width direction and extends in the front and rear directions of the vehicle at the cockpit position. The channel arch plate 6 is arranged along the vehicle length direction and extends in the vehicle width direction at the middle position of the vehicle body at the cockpit. The front panel lower plate 5 and the channel arch plate 6 overlap in the middle of the cockpit, and the two constitute the sixth cavity 56 of the closed cavity structure. The sixth cavity 56 is connected to the front and rear vehicle bodies.

[0061] The sixth cavity 56 is located in the central core area of the cockpit. Extending along the length of the vehicle, it connects to the first cavity 57 and the fourth cavity 45. This significantly enhances the torsional rigidity of the midsection, suppressing distortion during cornering, pitching, or unilateral loading. Furthermore, in a frontal collision, cavity 56 transfers the impact force rearward to the central tunnel (not shown) and rear longitudinal beam (not shown) via the tunnel arch 6. In a rearward collision, the force is transferred in the opposite direction, preventing energy accumulation in the midsection. Furthermore, the sixth cavity 56, along with the first cavity 57 and the fourth cavity 45, forms a three-cavity structure at the front bottom of the cockpit. This combination reduces midsection resonance during driving. Combined with damping or sound-insulating material filling the cavity, it significantly reduces road noise and low-frequency powertrain noise.

[0062] For example, the cross-section of the sixth cavity 56 can be approximately triangular, quadrilateral, polygonal, or other closed shapes. The dash lower panel 5 and the tunnel arch panel 6 can be connected by welding, bonding, riveting, or other methods, without limitation. Taking into account factors such as processing difficulty and manufacturing cost, while also taking into account the cockpit's dust and water resistance requirements, a combination of welding and bonding is preferred.

[0063] In some embodiments, Figure 13 The front structure of a frame provided in an embodiment of the present application Figure 6 The cross-section along DD direction is as follows: Figure 4 and Figure 13 As shown, the left / right front beam 10 extends along the front-rear direction of the vehicle, and the left / right front beam covering plate 11 extends along the up-down direction of the vehicle. The left / right front beam 10 and the left / right front beam covering plate 11 form a closed seventh cavity 1011 on the left and right sides of the front end of the cockpit.

[0064] Specifically, the left / right front beam 10 and the left / right front beam cover plate 11 extend in the front-to-back and top-to-bottom directions of the vehicle, and the two together form a seventh cavity 1011 of a closed cavity structure on the left and right sides of the front end of the cockpit. The left / right front beam 10 of the seventh cavity 1011 serves as the main energy-absorbing longitudinal beam, taking on the responsibility of transmitting the energy of a frontal collision backward. The left / right front beam cover plate 11 disperses the load along the fifth cavity 511 to the root of the A-pillar and the adjacent area, thereby enhancing the connection strength between the front end of the cockpit and the cockpit. Moreover, the seventh cavity 1011, through its closed cross-section design, can suppress the distortion of the front cabin during vehicle cornering or unilateral impact, thereby improving handling stability. At the same time, after a collision, the left / right front beam cover plate 11, through the rigid support of the seventh cavity 1011, limits the engine compartment components from moving backward and invading the passenger compartment. Furthermore, the seventh cavity 1011 is combined with the fifth cavity 511 , and the high rigidity of the closed cavity reduces the transmission of vehicle body vibration to the front of the cockpit through the left / right front beam sealing plates 11 , thereby improving the noise performance when driving on rough roads.

[0065] Exemplarily, the cross-section of the seventh cavity 1011 can be approximately triangular, quadrilateral, other polygon or other closed shape. The left / right front girders 10 and the left / right front girder seal plates 11 can be connected together by welding, bonding, riveting or the like, which is not limited herein. Considering factors such as the ease of processing and manufacturing cost, and taking into account the dust and water protection requirements of the cockpit, the connection is preferably made by welding combined with bonding.

[0066] In order to strengthen the association degree of each cavity of the front structure of the vehicle body and improve the comprehensive strength of the front, rear, up, down, left and right of the cockpit and the front end of the cockpit of the vehicle body, in some embodiments, such as Figure 10 shown, the first cavity 57, the third cavity 89 and the second cavity 13 are sequentially connected and enclosed to form a first frame structure 111. Among them, the two third cavities 89 are relatively arranged on the left and right sides of the cockpit, the second cavity 13 and the first cavity 57 are respectively arranged at the upper and lower ends of the two third cavities 89, and the four cavities are enclosed to form a first frame structure 111 in the shape of a mouth. The first frame structure 111 is located at the front end of the cockpit and extends vertically near the instrument panel, which can improve the strength of the front end of the cockpit. Moreover, this annular frame can also disperse the collision energy to the floor and the roof, reducing the risk of injury to the passengers in the cockpit. This closed cavity annular frame has high rigidity and can reduce the road bumps and engine vibrations transmitted to the cockpit through the A-pillar and the chassis, improving the comfort of the passengers.

[0067] The fourth cavity 45, the fifth cavity 511 and the first cavity 57 are sequentially connected and enclosed to form a second frame structure 112. Among them, the fourth cavity 45 and the first cavity 57 are relatively arranged, and the two fifth cavities 511 are respectively arranged at the left and right ends of the fourth cavity 45 and the first cavity 57. The four cavities are enclosed to form a second frame structure 112 in the shape of a mouth. The second frame structure 112 is near the foot position of the driver or co-driver at the front end of the cockpit. The second frame structure 112 has an annular frame, which can improve the overall rigidity of the chassis, enhance the torsional stiffness of the front bottom of the vehicle body, reduce the deformation of the vehicle body when turning or bumping, and can also prevent the engine or battery from invading the cockpit after a collision. The front apron lower plate 5 is connected to the subframe, and the energy is further dispersed through crush deformation to protect the safety of the lower limbs of the passengers. Moreover, the combination of the second frame structure 112 and the first frame structure 111, the first frame 111 is rooted in the stable second frame structure 112 at the bottom of the cockpit, obtaining a further improvement in strength, and the two form a physical isolation barrier between the engine compartment and the cockpit. By filling sound insulation materials or damping materials inside the cavity, it can effectively attenuate the transmission of engine vibrations and noises into the vehicle, suppress low-frequency roars, and reduce road noise.

[0068] The fifth cavity 511, the fourth cavity 45, the sixth cavity 56, and the first cavity 57 are sequentially connected to form two connected third frame structures 113. The third frame structure 113 is shaped like an I. Furthermore, the first cavity 57 and the fourth cavity 45 are positioned opposite each other, and the sixth cavity 56 is positioned between the first cavity 57 and the fourth cavity 45. The ends of the sixth cavity 56 are connected to the first cavity 57 and the fourth cavity 45, respectively, to form a first I-shaped structure 211.

[0069] It can be understood that the sixth cavity 56 is located inside the second frame structure 112, and divides the second frame structure 112 into two connected third frame structures 113. The sixth cavity 56 forms an I-shaped structure with the connected first cavity 57 and the fourth cavity 45, and then the second frame structure 112, the third frame structure 113 and the first I-shaped structure 211 are combined and superimposed on approximately the same plane, which improves the rigidity of the front structure of the cockpit, can assist the left / right front beam 10 in absorbing energy through its own deformation during a collision, and at the same time guide the impact force to be transmitted backward, reducing the deformation risk of the front of the cockpit, and can reduce the vibration transmitted to the cockpit through the front upper panel 2, the front bulkhead lower mounting plate 3, the front cross beam 4 and the front lower panel 5, thereby improving the vehicle's driving smoothness and suppressing steering wheel vibration caused by rough roads.

[0070] The seventh cavity 1011 and the fifth cavity 511 are connected to each other, and the two groups of the seventh cavity 1011 and the fifth cavity 511 are arranged opposite to each other. The fourth cavity 45 is arranged between the two groups of the seventh cavity 1011 and the fifth cavity 511, and the two ends of the fourth cavity 45 are respectively connected to one group of the seventh cavity 1011 and the fifth cavity 511 to form a second I-shaped frame 212.

[0071] The two fifth cavities 511 are positioned opposite each other, with the first cavity 57 positioned between them. The first cavity 57 is connected at both ends to one of the fifth cavities 511, forming a third I-shaped frame 213. As can be understood, the second I-shaped frame 212 and the third I-shaped frame 213 are connected to form a II-like shape. The two are combined and superimposed on a substantially identical plane, thereby enhancing the strength of the front bottom structure of the frame and the overall rigidity of the chassis.

[0072] One end of the fifth cavity 511 is connected to the third cavity 89 to form a T-shaped structure 311. The fifth cavity 511 connects to the seventh cavity 1011 and extends along the front of the front structure of the cockpit, while the third cavity 89 extends upward along the bottom of the front structure of the cockpit. Therefore, the forward-extending fifth cavity 511 and seventh cavity 1011 are quasi-vertically connected to the upward-extending third cavity 89. This allows the collision force to not only be transmitted backward from the seventh cavity 1011 along a conventional path, but also be transmitted to the third cavity 89 through the fifth cavity 511 to reduce the collision force on the cockpit. Furthermore, the collision force can be dispersed through the fourth cavity 45 and the sixth cavity 56. Consequently, the front and upper structures of the front structure of the cockpit are connected, thereby enhancing the overall strength of the front structure of the cockpit and the overall rigidity of the chassis.

[0073] Please continue reading Figure 10 The first frame structure 111 in the present application forms a quasi-plane, and the other six frame structures form another quasi-plane, and the two groups of quasi-planes intersect to form a quasi-T-shaped structure 311, thereby making the seven cavity structures composed of the eleven components in the present application connected to form seven frame structures. The seven frame structures form a plurality of cavity combinations that intersect and connect up and down, front and back, and left and right in the cockpit and the front of the cockpit of the frame, forming a complete annular body structure in the front of the cockpit, solving the problems of the need to improve the safety of the front end of the cockpit of existing models, the safety of the passengers and the NVH performance. It has excellent safety performance and good NVH performance. Each closed cavity forms a stable frame structure around the cockpit, which can provide better protection and experience for the cockpit personnel.

[0074] The present application also provides a vehicle, comprising the aforementioned front structure 100 applicable to a vehicle frame. It is understood that the front structure 100 of the vehicle frame in the present application includes eleven components having uneven surfaces, seven frame structures formed therefrom, and multiple frame structures, I-frames, and T-shaped structures formed therefrom, all of which can be applied to vehicles or vehicle frame structures, without limitation herein.

[0075] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A front structure of a vehicle frame, comprising a dash front extension plate, a front bulkhead lower mounting plate, a dash lower plate, a front floor front cross member, left / right A-pillar inner plates, and left / right A-pillar outer plates, which are connected to form a vehicle cockpit and a front end of the cockpit, wherein the dash lower plate and the front floor front cross member are arranged along the width direction of the vehicle and form a first cavity enclosed at the lower rear portion of the front end of the cockpit, characterized in that: The dash front extension plate and the front bulkhead lower mounting plate are arranged in the vehicle width direction, and the dash front extension plate and the front bulkhead lower mounting plate enclose a second cavity; the left / right A-pillar inner panels extend in the vehicle front-to-rear direction, the left / right A-pillar outer panels extend in the vehicle up-down direction, and the left / right A-pillar inner panels and the left / right A-pillar outer panels form a closed third cavity on the left and right sides of the cockpit; The first cavity, the third cavity and the second cavity are sequentially connected and enclosed to form a first frame structure.

2. The front structure of a vehicle frame according to claim 1, characterized in that: The front structure of the frame also includes a dash panel front cross beam, which is arranged along the width direction of the vehicle with the dash panel lower plate. The dash panel front cross beam and the dash panel lower plate form a fourth cavity that is closed at the lower front end of the cockpit.

3. The front structure of a vehicle frame according to claim 2, characterized in that: The front structure of the frame also includes a left / right front beam cover plate; The front panel lower plate extends along the front and rear directions of the vehicle, and the left / right front beam sealing plates extend along the upper and lower directions of the vehicle. The front panel lower plate and the left / right front beam sealing plates respectively form a closed fifth cavity on the left and right sides of the cockpit.

4. The front structure of a vehicle frame according to claim 3, characterized in that: The fourth cavity, the fifth cavity and the first cavity are sequentially connected and enclosed to form a second frame structure.

5. The front structure of a vehicle frame according to claim 3, characterized in that: The front structure of the frame also includes a channel arch plate; The overlapping portion of the front panel lower plate and the channel arch plate in the middle of the cockpit forms a closed sixth cavity; The first cavity and the fourth cavity are arranged opposite to each other, the sixth cavity is arranged between the first cavity and the fourth cavity, and two ends of the sixth cavity are respectively connected to the first cavity and the fourth cavity to form a first I-shaped structure.

6. The front structure of a vehicle frame according to claim 5, characterized in that: The fifth cavity, the fourth cavity, the sixth cavity and the first cavity are sequentially connected and enclosed to form two connected third frame structures.

7. The front structure of a vehicle frame according to claim 3, characterized in that: The front structure of the frame also includes a left / right front beam; The left / right front beam extends in the front-to-rear direction of the vehicle, and the left / right front beam cover plate extends in the up-down direction of the vehicle. The left / right front beam and the left / right front beam cover plate form a closed seventh cavity on the left and right sides of the front end of the cockpit; The seventh cavity and the fifth cavity are connected to each other, and the two groups of the seventh cavity and the fifth cavity are arranged opposite to each other. The fourth cavity is arranged between the two groups of the seventh cavity and the fifth cavity, and the two ends of the fourth cavity are respectively connected to one group of the seventh cavity and the fifth cavity to form a second I-shaped frame.

8. The front structure of a vehicle frame according to claim 3, characterized in that: The two fifth cavities are arranged opposite to each other, the first cavity is arranged between the two fifth cavities, and two ends of the first cavity are respectively connected to one of the fifth cavities to form a third I-shaped frame.

9. The front structure of a vehicle frame according to claim 3, characterized in that: One end of the fifth cavity is connected to the third cavity to form a T-shaped structure.

10. A vehicle, characterized in that: The vehicle includes the front structure of the vehicle frame according to any one of claims 1 to 9.

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