Force transfer structure at front part of cabin and vehicle

Abstract

The invention provides a cabin front force transmission structure and a vehicle. The cabin front force transmission structure comprises a front force bearing ring located in the middle and side force bearing rings arranged on the left side and the right side respectively. The front end of the side force bearing ring on each side is connected with the front force bearing ring, and the rear end of the side force bearing ring on each side is connected with the front wheel cover edge beam on the same side. A force bearing structure is arranged in the front force bearing ring, the force bearing structure is provided with a longitudinal part arranged in the up-down direction of the whole vehicle and a transverse part arranged in the left-right direction of the whole vehicle, and the force bearing structure is divided into a plurality of annular structures in the front force bearing ring. On the basis that the front force bearing ring and the side force bearing rings are arranged, the force bearing structure comprising the transverse part and the longitudinal part is further arranged, the structural strength of the front end position of the cabin can be improved, transmission and dispersion of collision force at the front end position of the cabin are facilitated, and the collision safety of the whole vehicle is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle bodies, and in particular to a force transmission structure at the front of a cabin. The present invention also relates to a vehicle provided with the force transmission structure at the front of a cabin. Background Art

[0002] In the vehicle body, the front force transmission structure of the cabin is an important component of the body frame. Its main function is to connect the two main force transmission channels of the cabin longitudinal beam and the cabin side beam, transmit and disperse the collision force, resist external collision impact, and also provide installation points for cabin accessories. It is an important load-bearing and load-bearing area in the vehicle structure.

[0003] At present, the front force transmission structure of the cabin is usually composed of the front anti-collision beam assembly, the front end frame, the cabin longitudinal beam assembly, the cabin side beam assembly, the front wheel cover assembly and the connecting bracket. Among them, the cabin longitudinal beam assembly, the cabin side beam assembly, the front wheel cover assembly and the connecting bracket are designed to be symmetrical on the left and right. The front end frame connects the left and right cabin longitudinal beam assemblies in the Y direction (the left and right direction of the whole vehicle), and connects the front anti-collision beam assembly in the X direction (the front and rear direction of the whole vehicle). The connecting bracket connects the front end frame and the cabin side beam assemblies on both sides.

[0004] Although the existing front-end force transmission structure of the engine compartment can realize the bearing and dispersion transmission of the collision impact, it still has a simple structure and weak overall strength. When the vehicle hits head-on or offset collision, the front part of the vehicle body is severely damaged, which is not conducive to improving the collision safety of the whole vehicle. At the same time, the existing front-end force transmission structure of the engine compartment is not suitable for application in compact space and low-cost vehicles due to the large volume of the front-end frame, complex structure and high cost. Summary of the invention

[0005] In view of this, the present invention aims to propose a force transmission structure at the front of the engine compartment, so as to help improve the collision safety of the entire vehicle.

[0006] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0007] A force transmission structure at the front of a cabin, comprising a front bearing ring located in the middle, and side bearing rings arranged at left and right sides;

[0008] The front end of the side bearing ring on each side is connected to the front bearing ring, and the rear end of the side bearing ring on each side is connected to the front wheel housing side beam on the same side;

[0009] A load-bearing structure is arranged inside the front load-bearing ring. The load-bearing structure has a longitudinal part arranged along the up-down direction of the whole vehicle and a transverse part arranged along the left-right direction of the whole vehicle. The load-bearing structure is separated into a plurality of annular structures inside the front load-bearing ring.

[0010] Furthermore, the front bearing ring includes a front upper crossbeam and a front lower crossbeam arranged up and down, and a headlamp mounting plate arranged on the left and right sides;

[0011] The longitudinal portion is connected between the front end upper cross beam and the front end lower cross beam, and the transverse portion is connected between the headlamp mounting plates at both sides.

[0012] Further, the longitudinal portion includes a middle connecting beam connected between the front upper beam and the front lower beam, and the transverse portion includes a front middle beam connected between the headlamp mounting plates on both sides;

[0013] The middle connecting beam is located in the middle of the vehicle in the left-right direction, the front middle cross beam is arranged close to the front lower cross beam, and the middle connecting beam and the front middle cross beam are connected together.

[0014] Furthermore, the middle connecting beam and the front end middle cross beam are connected via a middle beam connecting plate;

[0015] The bottom end of the intermediate beam connecting plate is fixedly connected to the front middle cross beam, and the top end of the intermediate beam connecting plate is connected to the intermediate connecting beam through a single connecting piece;

[0016] An energy absorbing cavity with an open bottom is formed between the middle beam connecting plate and the middle connecting beam.

[0017] Furthermore, the two ends of the front middle cross beam are respectively connected to the headlamp mounting plates on both sides through the middle cross beam connecting plates;

[0018] The middle cross beam connecting plates on both sides extend along the front and rear directions of the vehicle, and the front ends of the middle cross beam connecting plates on each side are connected to the front middle cross beam, and the rear ends of the middle cross beam connecting plates on each side are respectively provided with connecting flanges, and the connecting flanges are connected to the headlight connecting plates.

[0019] Furthermore, the middle portion of the front lower cross beam is concavely arranged along the vertical direction of the vehicle, and the front lower cross beam comprises a lower cross beam outer plate and a lower cross beam inner plate which are buckled and connected together;

[0020] An outer cavity is formed between the lower cross beam outer plate and the lower cross beam inner plate, and inner cavities are respectively formed between the lower cross beam inner plate and the headlamp mounting plates on both sides. The inner cavities on both sides are overlapped with the outer cavity in the front-rear direction of the vehicle.

[0021] Further, the side bearing rings on each side include the headlamp mounting plate, a front end connecting beam connected between the headlamp mounting plate and the front wheel housing side beam, and a headlamp connecting plate connected between the headlamp mounting plate and the front wheel housing side beam;

[0022] The front end connecting beam and the headlamp mounting plate are connected together with the front end upper cross beam, and the headlamp connecting plate and the front end connecting beam are connected together with the front wheel cover side beam.

[0023] Further, along the direction pointing to the side beam of the front wheel housing, the width of the front end connecting beam along the left-right direction of the whole vehicle is gradually reduced; and / or,

[0024] A cavity is formed between the headlamp mounting plate on each side and the front end connecting beam on the same side, a headlamp mounting reinforcement plate is connected to one side of the headlamp mounting plate on each side, and a cavity is formed between the headlamp mounting plate and the headlamp mounting reinforcement plate.

[0025] Further, a U-shaped overlapping portion is formed between the front upper cross beam and the front connecting beams on each side; and / or,

[0026] The front end of the front wheel cover side beam on each side has a box-shaped corner structure, the rear end of the front end connecting beam and the upper end of the headlight connecting plate are connected to the corner structure, and the rear end of the front end connecting beam and the upper end of the headlight connecting plate are respectively formed with an "L"-shaped connecting section matching the corner structure.

[0027] Compared with the prior art, the present invention has the following advantages:

[0028] The front force transmission structure of the cabin described in the present invention forms a front load-bearing ring and a side load-bearing ring at the front end of the cabin, and further arranges a load-bearing structure including transverse and longitudinal parts on the basis of the front load-bearing ring and the side load-bearing ring. This not only can utilize the high strength of the annular structure and the load-bearing and reinforcement of the load-bearing structure to increase the structural strength of the front end of the cabin, but also can help to transmit and disperse the collision force at the front end of the cabin, which is beneficial to improving the collision safety of the entire vehicle.

[0029] In addition, the front load-bearing ring is composed of a front upper crossbeam, a front lower crossbeam and headlight mounting plates on both sides. The ring structure composed of the front crossbeam and the headlight mounting plates can replace the front frame with a large space occupancy rate, which can effectively save layout space and provide convenience for the arrangement of accessories in the cabin. At the same time, it can also simplify the structural design and reduce costs, making it suitable for application in compact and low-cost car bodies.

[0030] The longitudinal part and the transverse part are respectively composed of the middle connecting beam and the front middle cross beam, so that the load-bearing structure becomes a "cross"-shaped interactive structure. On the basis of making the load-bearing structure have better reinforcement and load-bearing function, it also helps to simplify its structure, which is beneficial to the design, preparation and assembly of the load-bearing structure.

[0031] Secondly, the bottom end of the middle beam connecting plate is connected to the front middle cross beam, and the top end is connected to the middle connecting beam through a single connecting piece, and an energy absorption cavity is formed between the middle beam connecting plate and the middle connecting beam. On the basis of utilizing the single-point connection of a single connecting piece to achieve structural weakening at a fixed position, it is combined with the energy absorption cavity below to achieve better crushing energy absorption capacity, which helps the load-bearing structure absorb collision energy.

[0032] The two ends of the front center cross beam are connected to the headlight mounting plate through the center cross beam connecting plate, and the rear end of the center cross beam connecting plate is specifically connected to the headlight mounting plate through a connecting flange. The single-plate connection structure of the center cross beam connecting plate and the flanged connection between the center cross beam connecting plate and the headlight mounting plate can be utilized, so that the overall connection structure formed by the center cross beam connecting plate has the characteristic of easy deformation. In the event of a collision, the center cross beam connecting plate, especially the crushing energy absorption at the connecting flange position, can be utilized to improve the ability to absorb collision energy.

[0033] In addition, the concave setting in the middle of the front lower cross beam can improve the overall rigidity of the front lower cross beam and help increase the Z-direction (vehicle up and down direction) size and layout space of the front end of the cabin. The front lower cross beam is formed by buckling the lower cross beam outer plate and the lower cross beam inner plate, and the outer and inner cavities of the lower cross beam, the lower cross beam inner plate and the headlight mounting plate are formed by overlapping. The high-strength cavity overlapping structure can be used to ensure the connection strength between the front lower cross beam and the headlight mounting plate, which helps to transfer the collision force borne by the front lower cross beam to the side headlight mounting plate.

[0034] The side bearing rings on both sides are composed of a headlamp mounting plate, a front connecting beam and a headlamp connecting plate, which can make the structure of the side bearing rings relatively simple, and is helpful for the design and preparation of the side bearing rings. The front connecting beam and the headlamp mounting plate are connected to the front upper cross beam, and the headlamp connecting plate and the front connecting beam are connected to the front wheel cover side beam. The connection reliability between the front bearing ring, the side bearing ring and the front wheel cover side beam can also be ensured by using a multi-sheet metal overlapping connection method, which is helpful for improving the collision force transmission performance of the collision force transmission channel formed by the above three.

[0035] Furthermore, by gradually reducing the width of the front connecting beam along the left-right direction of the vehicle, the front connecting beam can be made into a "trumpet-shaped" connection structure, which can be matched and connected with the intersection of the front bearing ring and the side bearing ring through the large cross-section position of the front connecting beam, and connected with the front wheel cover side beam position through the small cross-section position. On the one hand, it can increase the structural strength of the intersection of the front side bearing ring and the front bearing ring to ensure the bearing performance of the front side bearing ring. On the other hand, it can also achieve a gradual change in the bearing strength of the front connecting beam, thereby improving its crushing energy absorption effect during collision.

[0036] By forming a cavity between the headlamp mounting plate and the front connecting beam, and between the headlamp mounting plate and the headlamp mounting reinforcement plate, the structural strength of the headlamp mounting plate and the connection strength between the headlamp mounting plate and the peripheral parts such as the front connecting beam can be ensured by utilizing the high strength of the cavity structure. A "U"-shaped overlapping portion is formed between the front upper crossbeam and the front connecting beam, which also helps to increase the structural strength of the front upper crossbeam and the front connecting beam themselves, as well as the connection strength between the two. A box-shaped corner structure is set at the front end of the front wheel cover side beam, and an "L"-shaped connection section matching the corner structure is formed between the rear end of the front connecting beam and the upper end of the headlamp connecting plate, which helps to achieve a multi-dimensional matching connection between the front connecting beam, the headlamp connecting plate and the front wheel cover side beam, which can improve the connection strength between the three and ensure that the collision force is effectively transmitted to the front wheel cover side beam.

[0037] Another object of the present invention is to provide a vehicle, in which the front force transmission structure of the engine room as described above is provided.

[0038] The vehicle described in the present invention can increase the structural strength of the front end of the cabin by providing the above-mentioned front cabin force transmission structure, which helps to transmit and disperse the collision force at the front end of the cabin, thereby being beneficial to improving the collision safety of the entire vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0040] Figure 1 It is a schematic diagram of the force transmission structure at the front of the cabin according to an embodiment of the present invention;

[0041] Figure 2 for Figure 1 Structural schematic diagrams of the structure shown in other viewing angles;

[0042] Figure 3 for Figure 1 A schematic diagram of the structure shown in another perspective;

[0043] Figure 4 for Figure 3 A magnified view of part A;

[0044] Figure 5 A schematic diagram of a load-bearing structure according to an embodiment of the present invention;

[0045] Figure 6 for Figure 5 Cross-section at the mid-BB position;

[0046] Figure 7 for Figure 5Cross-section at the mid-CC position;

[0047] Figure 8 It is a schematic diagram of a part of the structure of the front force transmission structure of the cabin according to an embodiment of the present invention;

[0048] Fig. 9 This is a schematic structural diagram of the front lower cross beam according to an embodiment of the present invention;

[0049] Fig.10 for Figure 8 Cross-section at the middle DD position;

[0050] Fig.11 for Figure 8 Cross-section at the middle EE position;

[0051] Fig.12 This is a schematic structural diagram of a front end connecting beam according to an embodiment of the present invention;

[0052] Fig.13 A schematic diagram of the intersection of the front upper cross beam, the headlamp mounting plate and the front connecting beam according to an embodiment of the present invention;

[0053] Fig.14 for Fig.13 Cross-section diagram at the middle FF position;

[0054] Fig.15 for Fig.13 Cross-section at the mid-GG position;

[0055] Fig.16 A schematic diagram of the intersection of the front end connecting beam, the headlamp connecting plate and the front wheel housing side beam according to an embodiment of the present invention;

[0056] Fig.17 It is a schematic structural diagram of the front wheel cover side beam according to an embodiment of the present invention;

[0057] Fig.18 for Fig.16 Cross-section at the mid-HH position;

[0058] Fig.19 for Fig.16 Cross-section at the middle II position;

[0059] Fig. 20 A schematic diagram of collision force transmission of a force transmission structure at the front of a cabin according to an embodiment of the present invention;

[0060] Description of reference numerals:

[0061] 100, front bearing ring; 200, side bearing ring; 300, bearing structure;

[0062] 1. Front upper crossbeam; 2. Front lower crossbeam; 3. Front middle crossbeam; 4. Middle connecting beam; 5. Middle beam connecting plate; 6. Middle crossbeam connecting plate; 7. Headlamp mounting plate; 8. Headlamp connecting plate; 9. Front connecting beam; 10. Front wheel housing side beam; 11. Connecting piece; 12. Headlamp reinforcement plate; 13. Headlamp reinforcement plate;

[0063] 2a, lower cross beam outer plate; 2b, lower cross beam inner plate; 2c, concave portion; 6a, connecting flange; 7a, lower portion; 7b, side portion; 10a, corner structure;

[0064] Q, energy absorption cavity; M, outer cavity; N, inner cavity; K, first cavity; L, second cavity; S, overlapping part; t, width of the front wheel cover side beam. DETAILED DESCRIPTION

[0065] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0066] In the description of the present invention, it should be noted that if there are terms indicating orientation or positional relationship such as "upper", "lower", "inner", "outer", etc., they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, if there are terms such as "first", "second", etc., they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0067] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installed", "connected", "connection" and "connector" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0068] In addition, in the description of the present invention, the X direction, Y direction and Z direction all adopt the vehicle coordinate system, and specifically, the X direction is the front and rear direction of the whole vehicle, the Y direction is the left and right direction of the whole vehicle, and the Z direction is the up and down direction of the whole vehicle.

[0069] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0070] Embodiment 1

[0071] The present embodiment relates to a force transmission structure at the front of the engine compartment, which can be beneficial to improving the collision safety of the entire vehicle and contribute to improving the overall quality of the vehicle.

[0072] In existing vehicle bodies, the front force transmission structure of the cabin is generally composed of a front anti-collision beam assembly, a front end frame, a cabin longitudinal beam assembly, a cabin side beam assembly, a front wheel cover assembly, and a connecting bracket. The cabin longitudinal beam assembly, the cabin side beam assembly, the front wheel cover assembly, and the connecting bracket are usually designed to be bilaterally symmetrical. The front end frame connects the left and right cabin longitudinal beam assemblies in the Y direction and the front anti-collision beam assembly in the X direction. The connecting bracket connects the front end frame and the cabin side beam assemblies on both sides.

[0073] The above-mentioned existing front cabin force transmission structure is capable of transmitting the collision force from the front anti-collision particle assembly to the cabin longitudinal beam assembly, the cabin side beam assembly and the front wheel cover assembly through the front end frame and the connecting bracket when the vehicle collides, especially when a head-on collision or an offset collision occurs, so as to realize the acceptance and dispersed transmission of the collision impact.

[0074] However, in actual application, especially as people pay more and more attention to vehicle collision safety, the existing front force transmission structure of the cabin still has the disadvantages of single structure and weak overall strength. When the vehicle is in a head-on collision or offset collision, the front part of the vehicle body is severely damaged, which is not conducive to improving the collision safety of the whole vehicle. At the same time, due to the large volume of the front frame used, the structure is also relatively complex and costly, which makes the existing front force transmission structure of the cabin unsuitable for use in compact space and low-cost vehicles, and needs to be redeveloped, which will increase the development cost of the whole vehicle.

[0075] In view of the shortcomings of the cabin front force transmission structure in the prior art, in the cabin front force transmission structure of this embodiment, the overall structure is combined with Figure 1 As shown in FIG. 1 , it mainly includes a front bearing ring 100 located in the middle, and side bearing rings 200 arranged on the left and right sides.

[0076] The front end of each side bearing ring 200 is connected to the front bearing ring 100, and the rear end of each side bearing ring 200 is connected to the front wheel housing side beam 10 on the same side. At the same time, a bearing structure 300 is also provided in the front bearing ring 100, and the bearing structure 300 has a longitudinal part arranged along the up-down direction of the whole vehicle, and a transverse part arranged along the left-right direction of the whole vehicle, and through the arrangement of the above-mentioned bearing structure 300, a plurality of annular structures are also separated in the front bearing ring 100.

[0077] At this time, as set above, by forming a front bearing ring 100 and a side bearing ring 200 at the front end of the cabin, and further setting a bearing structure 300 including transverse and longitudinal parts on the basis of the front bearing ring 100 and the side bearing ring 200, this embodiment can utilize the high strength of the annular structure, as well as the bearing and reinforcement of the bearing structure 300, to increase the structural strength of the front end of the cabin, and help to transmit and disperse the collision force at the front end of the cabin, thereby helping to improve the collision safety of the entire vehicle.

[0078] Based on the overall introduction above, specifically, in the vehicle, the above-mentioned cabin is also the front cabin located at the front of the vehicle body, and thus, the cabin front force transmission structure of this embodiment is also the force transmission structure located at the front of the vehicle body.

[0079] In addition, continue Figures 2 to 4 As shown in , in the specific implementation, as a preferred implementation form, the front load-bearing ring 100 of this embodiment includes a front upper cross beam 1 and a front lower cross beam 2 arranged up and down, and a headlight mounting plate 7 arranged on the left and right sides. At this time, the longitudinal part of the above-mentioned load-bearing structure 300 is connected between the front upper cross beam 1 and the front lower cross beam 2, and the transverse part is connected between the headlight mounting plates 7 on both sides.

[0080] At this time, by making the front load-bearing ring 100 mainly composed of the front end upper cross beam 1, the front end lower cross beam 2 and the headlight mounting plates 7 on both sides, the ring structure composed of the front end cross beam and the headlight mounting plates 7 can replace the existing front end frame with a large space occupancy rate, which can effectively save layout space and provide convenience for the arrangement of accessories in the cabin. At the same time, it can also simplify the structural design and reduce costs, so that the front cabin force transmission structure of this embodiment is suitable for use in compact space and low-cost car bodies.

[0081] In this embodiment, the front bearing ring 100 is composed of the front upper cross beam 1, the front lower cross beam 2 and the headlamp mounting plates 7 on both sides. Also as a preferred implementation form, the longitudinal part of the bearing structure 300 specifically includes the middle connecting beam 4 connected between the front upper cross beam 1 and the front lower cross beam 2, and the transverse part includes the front middle cross beam 3 connected between the headlamp mounting plates 7 on both sides. In addition, in terms of specific arrangement, refer to Figure 1 As shown, the middle connecting beam 4 is located in the middle of the vehicle in the left-right direction, the front middle cross beam 3 is arranged close to the front lower cross beam 2, and the middle connecting beam 4 and the front middle cross beam 3 are also connected together.

[0082] It can be understood that by making the longitudinal part and the transverse part of the load-bearing structure 300 respectively consist of the middle connecting beam 4 and the front middle cross beam 3, the load-bearing structure 300 of this embodiment can be made into a "cross" shaped interactive structure. In this way, it can not only make the load-bearing structure 300 have better reinforcement and load-bearing function, but also help to simplify its structure, which is beneficial to the design, preparation and assembly of the load-bearing structure 300.

[0083] It should be noted that, in specific implementation, the front upper cross beam 1, the front lower cross beam 2 and the headlamp mounting plates 7 on both sides that together constitute the front bearing ring 100, and the front middle cross beam 3 and the middle connecting beam 4 that constitute the bearing structure 300 can all be made of sheet metal parts, so as to facilitate the preparation of each beam body or plate body structure, and also reduce the material cost. In addition, the above beam bodies can also be connected to each other, or between the beam body and the plate body by welding, so as to ensure the connection reliability and also help reduce the connection cost.

[0084] In this embodiment, as a preferred implementation form, the connection between the front middle cross beam 3 and the middle connecting beam 4 in the load-bearing structure 300 is continued as follows: Figure 5 and Figure 6 As shown in the figure, the middle connecting beam 4 and the front middle cross beam 3 can be connected, for example, via a middle beam connecting plate 5. The bottom end of the middle beam connecting plate 5 is fixedly connected to the front middle cross beam 3, and the top end thereof is connected to the middle connecting beam 4 via a single connecting member 11. Based on the connection of the connecting member 11, an energy absorbing cavity Q with an open bottom is also formed between the middle beam connecting plate 5 and the middle connecting beam 4.

[0085] At this time, by adopting the middle beam connecting plate 5, and making the bottom end of the middle beam connecting plate 5 connected to the front middle cross beam 3, and the top end connected to the middle connecting beam 4 through a single connecting piece 11, and forming an energy absorption cavity Q between the middle beam connecting plate 5 and the middle connecting beam 4, this embodiment can further cooperate with the energy absorption cavity Q below on the basis of realizing the structural weakening of the fixed position between the middle beam connecting plate 5 and the middle connecting beam 4 by single-point connection using a single connecting piece 11, so that the load-bearing structure 300 as a whole can achieve better collapse energy absorption capacity, thereby helping the load-bearing structure 300 to absorb collision energy, so as to reduce the damage caused by the collision impact.

[0086] It is worth noting that, in the specific implementation, the intermediate beam connecting plate 5 can also be made of sheet metal, and its bottom end can also be connected to the front middle cross beam 3 by welding. In addition, the connecting member 11 can preferably be a bolt, and to achieve the connection, for example, a threaded connection hole can be formed on the intermediate connecting beam 3, or a projection welding nut can be set on the intermediate connecting beam 3, so as to achieve the connection. Figure 6As shown in FIG. 1 , the top end of the intermediate beam connecting plate 5 and the intermediate connecting beam 4 are connected together via a connecting member 11 formed by bolts.

[0087] In this embodiment, in addition to connecting the front middle cross beam 3 and the middle connecting beam 4 arranged in a "cross" shape through the middle beam connecting plate 5, of course, in specific implementation, the front middle cross beam 3 and the middle connecting beam 4 can be directly fixed together by welding or screwing, which is also possible. However, in order to make the load-bearing structure 300 have better collision energy absorption performance on the basis of realizing the connection between the front middle cross beam 3 and the middle connecting beam 4, it is preferred that the front middle cross beam 3 and the middle connecting beam 4 should still be indirectly connected through the above-mentioned middle beam connecting plate 5.

[0088] Still by Figure 5 , and continue to combine Figure 7 As shown in , as a preferred implementation form, the two ends of the front middle cross beam 3 of this embodiment are connected to the headlight mounting plates 7 on both sides through the middle cross beam connecting plates 6. Among them, the middle cross beam connecting plates 6 on both sides extend along the front and rear direction of the whole vehicle, and the front end of the middle cross beam connecting plates 6 on each side is connected to the front middle cross beam 3, and the rear end of the middle cross beam connecting plates 6 on each side is respectively provided with a connecting flange 6a. The connecting flange 6a on each side is connected to the headlight connecting plate 8 on the same side, so as to realize the connection setting of the front middle cross beam 3 between the headlight mounting plates 7 on both sides.

[0089] At this time, by connecting the two ends of the front middle cross beam 3 with the headlight mounting plates 7 on both sides through the middle cross beam connecting plate 6, and the rear end of the middle cross beam connecting plate 6 is also specifically connected to the headlight mounting plate 7 through the connecting flange 6a, it can be understood that it can utilize the single-plate connection structure of the middle cross beam connecting plate 6 and the flanged connection between it and the headlight mounting plate 7, so that the overall connection structure formed by the middle cross beam connecting plate 6 has the characteristic of being easy to deform. In this way, this embodiment can utilize the middle cross beam connecting plate 6, especially the collapsing energy absorption at the connecting flange 6a at its end, to improve the absorption capacity of the collision energy, so as to further improve the collision safety.

[0090] In the specific implementation, it is worth noting that the middle cross beam connecting plate 6 on each side can also be made of sheet metal, and the connecting flange 6a at the rear end can be formed by stamping. At the same time, the front end of the middle cross beam connecting plate 6 and the front middle cross beam 3, as well as the connecting flange 6a at the rear end and the headlight mounting plate 7 can also be connected by welding.

[0091] In this embodiment, continue as Figure 8 and Fig. 9As shown in , as a preferred implementation form, the middle part of the front lower cross beam 2 is also recessed along the vertical direction of the vehicle, and thus a recessed portion 2c is formed in the middle part of the front lower cross beam 2. By providing the front lower cross beam 2 with the recessed portion 2c, the overall rigidity of the front lower cross beam 2 can be improved through the recessed setting of the middle part of the front lower cross beam 2, and it also helps to increase the Z-direction dimension and layout space at the front end of the cabin, so as to facilitate the arrangement of related accessories at the front end of the cabin.

[0092] Continue as Fig.10 and Fig.11 As shown in the figure, on the basis of the concave middle part, preferably, the front end lower cross beam 2 of this embodiment also specifically includes a lower cross beam outer plate 2a and a lower cross beam inner plate 2b which are snap-fitted together in structure, and further, based on the front end lower cross beam 2 being composed of inner and outer plates which are snap-fitted together, an outer cavity M is formed between the lower cross beam outer plate 2a and the lower cross beam inner plate 2b, and inner cavities N are also respectively formed between the lower cross beam inner plate 2b and the headlamp mounting plates 7 on both sides, and at the same time, the inner cavities N on both sides are superimposed on the outer cavity M in the front and rear direction of the whole vehicle.

[0093] It can be understood that by making the front end lower cross beam 2 comprised of a lower cross beam outer plate 2a and a lower cross beam inner plate 2b that are fastened together, and forming a superimposed outer cavity M and an inner cavity N between the lower cross beam outer plate 2a, the lower cross beam inner plate 2b and the headlight mounting plate 7, the present embodiment can utilize a high-strength cavity superposition structure to ensure the connection strength between the front end lower cross beam 2 and the headlight mounting plate 7, thereby facilitating the transmission of the collision force borne by the front end lower cross beam 2 to the side headlight mounting plate 7, so as to also achieve the effect of improving collision safety.

[0094] In this embodiment, Figures 1 to 4 As shown in , as a preferred embodiment, the side load-bearing rings 200 on both sides include a headlight mounting plate 7 on the same side, a front end connecting beam 9 connected between the headlight mounting plate 7 and the front wheel cover side beam 10 on the same side, and a headlight connecting plate 8 connected between the headlight mounting plate 7 and the front wheel cover side beam 10 on the same side.

[0095] At this time, the side bearing rings 200 on both sides are composed of the headlight mounting plate 7, the front end connecting beam 9 and the headlight connecting plate 8. It can be understood that it can make the structure of the side bearing ring 200 simpler and facilitate the design and preparation of the side bearing ring 200.

[0096] The interior of the side bearing ring 200 composed of the headlamp mounting plate 7, the front connecting beam 9 and the headlamp connecting plate 8 is also the installation space for accommodating the vehicle headlamp. In addition, in a specific implementation, in addition to the headlamp mounting plate 7, the headlamp connecting plate 8 and the front connecting beam 9 constituting the side bearing ring 200 can also be sheet metal parts, and the two can also be connected to the headlamp mounting plate 7 and the front wheel housing side beam 10 by welding.

[0097] On the basis that each side load-bearing ring 200 is composed of a headlight mounting plate 7, a front end connecting beam 9 and a headlight connecting plate 8, preferably, further in this embodiment, the front end connecting beam 9 and the headlight mounting plate 7 are intersected and connected with the front end upper cross beam 1, and at the same time, the headlight connecting plate 8 and the front end connecting beam 9 are intersected and connected with the front wheel cover side beam 10.

[0098] In this way, the front end connecting beam 9 and the headlamp mounting plate 7 are intersected and connected with the front end upper cross beam 1, and the headlamp connecting plate 8 and the front end connecting beam 9 are intersected and connected with the front wheel cover side beam 10. It is also possible to utilize a multi-sheet metal overlapping connection method to ensure the connection reliability between the front load-bearing ring 100, the side load-bearing ring 200 and the front wheel cover side beam 10, which helps to improve the collision force transmission performance of the collision force transmission channel formed by the above three.

[0099] In addition, it should be noted that, since the headlamp mounting plate 7 is also a component of the front bearing ring 100 and the side bearing ring 200, in terms of structure, see Figure 4 As shown, the headlamp mounting plate 7 of this embodiment is in an "L" shape as a whole, and mainly includes a lower part 7a and a side part 7b.

[0100] Among them, the front lower cross beam 2 and the middle cross beam connecting plate 6 located at the end of the front middle cross beam 3 are mainly connected to the intersection between the lower part 7a and the side part 7b, the front upper cross beam 1 and the front connecting beam 9 are connected to the top of the side part 7b, and the headlight connecting plate 8 is connected to the lower part 7a. In this way, this embodiment can organically connect the front bearing ring 100 and the side bearing rings 200 on both sides mainly through the connection effect of the headlight mounting plate 7 to form the front force transmission structure of this embodiment.

[0101] In addition, it is worth mentioning that, for the intersection between the lower part 7a and the side part 7b in the headlamp mounting plate 7 on each side, in the overall vehicle body, the front side of the intersection is generally connected to the energy absorption box to realize the setting of the front anti-collision beam, and the rear side of the intersection is usually connected to the front end of the cabin longitudinal beam. In this way, not only the connection reliability between the cabin longitudinal beam and the front anti-collision beam assembly can be guaranteed, but also the front anti-collision beam assembly and the cabin longitudinal beam can be effectively connected to form an X-direction collision force transmission channel.

[0102] Continue as Fig.12 As shown, as a preferred implementation form, in the direction pointing to the front wheel housing side beam 10, the width t of the front end connecting beam 9 on each side along the left and right direction of the vehicle can be gradually reduced. At this time, by making the width t of the front end connecting beam 9 along the left and right direction of the vehicle gradually reduced, the front end connecting beams 9 on both sides can be made into a "trumpet-shaped" connection structure with a wide front and a narrow rear.

[0103] Furthermore, by utilizing the "trumpet-shaped" structural design of the front connecting beam 9, this embodiment matches and connects the large cross-section position of the front connecting beam 9 with the intersection position of the front bearing ring 100 and the side bearing ring 200, and connects the small cross-section position of the front connecting beam 9 with the position of the front wheel housing side beam 10. On the one hand, it can increase the structural strength of the intersection of the front part of the side bearing ring 200 and the front bearing ring 100, and ensure the bearing performance of the front part of the side bearing ring 200; on the other hand, it can also achieve a gradual change in the bearing strength of the front connecting beam 9, which is conducive to improving the crushing energy absorption effect of the front connecting beam 9 during a collision.

[0104] In this embodiment, based on the intersection and connection between the front end connecting beam 9 and the headlamp mounting plate 7 on each side and the front end upper cross beam 1, continue as follows Figures 13 to 15 As shown in , as a preferred embodiment, a cavity is formed between the headlamp mounting plate 7 on each side and the front end connecting beam 9 on the same side. At the same time, a headlamp mounting reinforcement plate 13 is also connected to one side of the headlamp mounting plate 7 on each side, and a cavity is also formed between the headlamp mounting plate 7 and the headlamp mounting reinforcement plate 13.

[0105] At this time, the cavity formed between the headlamp mounting plate 7 and the front end connecting beam 9 is Fig.14 The first cavity K in the headlight mounting plate 7 and the cavity formed between the headlight mounting reinforcement plate 13 are Fig.15 The second cavity L in the headlamp mounting plate 13 is also made of sheet metal and is fixedly connected to one side of the headlamp mounting plate 7 by welding.

[0106] It is understandable that by providing the headlamp mounting reinforcement plate 13, it is possible to increase the structural strength of the headlamp mounting plate 7 to improve the stability of the vehicle headlamp after installation. In addition, in the specific implementation, in addition to providing the headlamp mounting reinforcement plate 13 at the headlamp mounting plate 7 on each side, of course, Fig.11 As shown in the figure, a headlamp reinforcement plate 12 may be further provided at the headlamp mounting plate 7 on each side. The headlamp reinforcement plate 12 also adopts sheet metal and is arranged by welding. In addition, mounting points for installing accessories at the front end of the cabin may be provided on the headlamp reinforcement plate 12.

[0107] In addition, it can also be understood that by respectively forming a cavity between the headlamp mounting plate 7 and the front end connecting beam 9, and between the headlamp mounting plate 7 and the headlamp mounting reinforcement plate 13, the present embodiment can utilize the high strength of the cavity structure to ensure the structural strength of the headlamp mounting plate 7, as well as the connection strength between the headlamp mounting plate 7 and peripheral parts such as the front end connecting beam 9, thereby helping to improve the overall stability of the force transmission structure at the front of the cabin.

[0108] Still Fig.15 As shown in the figure, as a preferred implementation form, in this embodiment, based on the intersection and connection between the front end upper cross beam 1, the front end connecting beam 9 and the headlight mounting plate 7, a "U"-shaped overlapping part S is formed between the front end upper cross beam 1 and the front end connecting beams 9 on each side.

[0109] In the above-mentioned superimposed portion S, the portion where the front upper cross beam 1 and the front connecting beam 9 are superimposed together is a "U-shaped" structure, and the superimposed portions of the two can be connected by welding. By forming a "U"-shaped superimposed portion S between the front upper cross beam 1 and the front connecting beam 9, it can be understood that it is obviously also helpful to increase the structural strength of the front upper cross beam 1 and the front connecting beam 9 themselves, as well as the connection strength between the two.

[0110] In this embodiment, continue as Fig.16 and Fig.17 As shown in the figure, as a preferred embodiment, the front end of each side front wheel housing side beam 10 has a box-shaped corner structure 10a, and the corner structure 10a is also specifically a semi-box-shaped box-shaped structure. At the same time, the rear end of each side front end connecting beam 9 and the upper end of the headlamp connecting plate 8 are connected to the corner structure 10a on the same side front wheel housing side beam 10, and combined with Fig.18 and Fig.19 As shown in FIG. 1 , the rear end of the front connecting beam 9 and the upper end of the headlight connecting plate 8 are also respectively formed with an "L"-shaped connecting section matching the corner structure 10a.

[0111] At this time, by setting a box-shaped corner structure 10a at the front end of the front wheel cover side beam 10, and making the rear end of the front end connecting plate 9 and the upper end of the headlight connecting plate 8 form an "L"-shaped connecting section matching the corner structure 10a, it is helpful to achieve a multi-dimensional matching connection between the front end connecting plate 9 and the headlight connecting plate 8 and the front wheel cover side beam 10, which can enhance the connection strength among the three, thereby facilitating the effective transmission of the collision force at the side bearing ring 200 to the position of the front wheel cover side beam 10.

[0112] The force transmission structure at the front of the cabin of this embodiment adopts the above structure, by forming a front load-bearing ring 100 composed of the front upper and lower cross beams and the headlight mounting plates 7 on both sides at the front end of the cabin, and a side load-bearing ring 200 composed of the headlight mounting plates 7 on each side, the headlight connecting plates 8 and the front connecting beam 9, and further arranging a load-bearing structure 300 including a transversely arranged front middle cross beam 3 and a longitudinally arranged middle connecting beam 4 in the front load-bearing ring 100.

[0113] Therefore, this embodiment can not only utilize the high strength of the annular structure, as well as the load-bearing and reinforcement of the load-bearing structure 300 to increase the structural strength of the front end of the cabin, but also utilize the force transmission channel formed by each load-bearing ring and the load-bearing structure 300, which also helps to transmit and disperse the collision force at the front end of the cabin, which can be beneficial to improving the collision safety of the entire vehicle, thereby helping to improve the overall quality of the vehicle.

[0114] And if Fig. 20 As shown in the figure, when a vehicle collides, especially a head-on collision or an offset collision, the collision force is transmitted through the front lower cross beam 2 and the front middle cross beam 3, and can be further transmitted through the front bearing ring 100 to the side bearing rings 200 on both sides, and then transmitted to the rear front wheel housing side beam 10 through the side bearing rings 200. At the same time, in addition to transmitting and dispersing the collision force to the rear, the middle beam connecting plate 5 and the middle cross beam connecting plates 6 on both sides can absorb the collision energy, and of course, this embodiment can also absorb the collision energy to reduce the damage caused by the collision.

[0115] Embodiment 2

[0116] This embodiment relates to a vehicle, in which the front force transmission structure of the cabin in the first embodiment is provided.

[0117] In the vehicle of this embodiment, except for the above-mentioned force transmission structure at the front of the engine compartment, other structures in the vehicle body may refer to the relevant structures in the existing vehicle body.

[0118] Moreover, the vehicle of this embodiment is equipped with the front force transmission structure of the cabin in Embodiment 1, which can increase the structural strength of the front end of the cabin, help to transfer and disperse the collision force at the front end of the cabin, and can be beneficial to improving the collision safety of the whole vehicle, thereby helping to improve the overall quality of the vehicle.

[0119] 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 principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A force transmission structure at the front of a cabin, characterized in that: It comprises a front bearing ring (100) located in the middle, and side bearing rings (200) arranged on the left and right sides; The front end of the side bearing ring (200) on each side is connected to the front bearing ring (100), and the rear end of the side bearing ring (200) on each side is connected to the front wheel housing side beam (10) on the same side; A load-bearing structure (300) is arranged inside the front load-bearing ring (100), and the load-bearing structure (300) has a longitudinal portion arranged along the vertical direction of the whole vehicle, and a transverse portion arranged along the left-right direction of the whole vehicle, and the load-bearing structure (300) is separated into a plurality of annular structures inside the front load-bearing ring (100).

2. The front force transmission structure of the cabin according to claim 1, characterized in that: The front bearing ring (100) comprises a front upper crossbeam (1) and a front lower crossbeam (2) arranged vertically, and a headlight mounting plate (7) arranged on the left and right sides; The longitudinal portion is connected between the front upper cross beam (1) and the front lower cross beam (2), and the transverse portion is connected between the headlight mounting plates (7) on both sides.

3. The front force transmission structure of the cabin according to claim 2, characterized in that: The longitudinal portion comprises a middle connecting beam (4) connected between the front upper beam (1) and the front lower beam (2), and the transverse portion comprises a front middle beam (3) connected between the headlamp mounting plates (7) on both sides; The middle connecting beam (4) is located in the middle of the vehicle in the left-right direction, the front middle cross beam (3) is arranged close to the front lower cross beam (2), and the middle connecting beam (4) and the front middle cross beam (3) are connected together.

4. The front force transmission structure of the cabin according to claim 3, characterized in that: The middle connecting beam (4) and the front end middle cross beam (3) are connected via a middle beam connecting plate (5); The bottom end of the intermediate beam connecting plate (5) is fixedly connected to the front middle cross beam (3), and the top end of the intermediate beam connecting plate (5) is connected to the intermediate connecting beam (4) via a single connecting piece (11); An energy absorbing cavity (Q) with an open bottom is formed between the intermediate beam connecting plate (5) and the intermediate connecting beam (4).

5. The front force transmission structure of the cabin according to claim 3, characterized in that: The two ends of the front middle cross beam (3) are respectively connected to the headlight mounting plates (7) on both sides through the middle cross beam connecting plates (6); The middle cross beam connecting plates (6) on both sides extend along the front-rear direction of the vehicle, and the front end of the middle cross beam connecting plates (6) on each side is connected to the front middle cross beam (3), and the rear end of the middle cross beam connecting plates (6) on each side is respectively provided with connecting flanges (6a), and the connecting flanges (6a) are connected to the headlight connecting plates (8).

6. The front force transmission structure of the cabin according to claim 2, characterized in that: The middle portion of the front lower cross beam (2) is concavely arranged along the vertical direction of the vehicle, and the front lower cross beam (2) comprises a lower cross beam outer plate (2a) and a lower cross beam inner plate (2b) which are buckled and connected together; An outer cavity (M) is formed between the lower cross beam outer plate (2a) and the lower cross beam inner plate (2b), and inner cavities (N) are respectively formed between the lower cross beam inner plate (2b) and the headlamp mounting plates (7) on both sides, and the inner cavities (N) on both sides are arranged to overlap with the outer cavity (M) in the front-rear direction of the vehicle.

7. The front force transmission structure of the nacelle according to any one of claims 2 to 6, characterized in that: The side bearing ring (200) on each side includes the headlight mounting plate (7), a front end connecting beam (9) connected between the headlight mounting plate (7) and the front wheel cover side beam (10), and a headlight connecting plate (8) connected between the headlight mounting plate (7) and the front wheel cover side beam (10); The front end connecting beam (9) and the headlamp mounting plate (7) are connected to the front end upper cross beam (1), and the headlamp connecting plate (8) and the front end connecting beam (9) are connected to the front wheel cover side beam (10).

8. The front force transmission structure of the cabin according to claim 7, characterized in that: Along the direction pointing to the front wheel housing side beam (10), the width (t) of the front end connecting beam (9) along the left-right direction of the whole vehicle is gradually reduced; and / or, A cavity is formed between the headlight mounting plate (7) on each side and the front end connecting beam (9) on the same side, a headlight mounting reinforcement plate (13) is connected to one side of the headlight mounting plate (7) on each side, and a cavity is formed between the headlight mounting plate (7) and the headlight mounting reinforcement plate (13).

9. The front force transmission structure of the cabin according to claim 7, characterized in that: A "U"-shaped overlapping portion (S) is formed between the front upper cross beam (1) and the front connecting beams (9) on each side; and / or, The front end of the front wheel cover side beam (10) on each side has a box-shaped corner structure (10a), the rear end of the front end connecting beam (9) and the upper end of the headlight connecting plate (8) are both connected to the corner structure (10a), and the rear end of the front end connecting beam (9) and the upper end of the headlight connecting plate (8) are respectively formed with an "L"-shaped connecting section matching the corner structure (10a).

10. A vehicle, characterized in that: The vehicle is provided with a cabin front force transmission structure according to any one of claims 1 to 9.

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