Front auxiliary frame, vehicle body structure and vehicle

Abstract

The utility model relates to the technical field of vehicle structures, and provides a front auxiliary frame, a vehicle body structure and a vehicle, the front auxiliary frame comprises an auxiliary cross beam and two auxiliary longitudinal beams, and the auxiliary cross beam is connected with the two auxiliary longitudinal beams; the auxiliary longitudinal beams are used for connecting chemical bin front cross beams; according to the front auxiliary frame provided by the embodiment of the invention, the two auxiliary longitudinal beams are fixedly connected into a whole through the auxiliary cross beam, and then the two auxiliary longitudinal beams are connected with the front cross beam of the chemical bin, so that the whole structure of the vehicle can be effectively reinforced through the front auxiliary frame, and the bending and torsional rigidity of the vehicle is effectively improved.

Description

Technical Field

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

[0002] With the development of vehicle technology, people have put forward higher and higher requirements on vehicle collision safety, ride comfort, structural compactness and other performance.

[0003] In CTC (Cell to Chassis) technology, the battery cells are integrated into the vehicle's body structure and connected to the vehicle's body structure. The torsion box bears the front or side load of the vehicle to reduce the load on the battery cells.

[0004] In vehicles using CTC technology, the battery cells are integrated into the vehicle body structure, and a chemical compartment front crossbeam is set in the body structure to protect the battery cells. The chemical compartment front crossbeam is used to connect with the torsion box of the body structure, and the front longitudinal beam is connected through the torsion box to form a transmission path for the front collision force. However, the single force transmission path formed by connecting the chemical compartment front crossbeam only through the front longitudinal beam and the torsion box has low force transmission efficiency, and the vehicle has weak bending and torsional rigidity. Utility Model Content

[0005] The purpose of the embodiments of the present application is to provide a front subframe, a body structure and a vehicle, aiming to solve the problem of weak bending and torsional rigidity of vehicles using battery-body integration technology in related technologies.

[0006] To achieve the above purpose, the technical solution adopted in the embodiment of the present application is:

[0007] In a first aspect, an embodiment of the present application provides a front subframe, comprising a sub-crossbeam and two sub-longitudinal beams, wherein the sub-crossbeam connects the two sub-longitudinal beams; and the sub-longitudinal beam is used to connect a front crossbeam of a chemical warehouse.

[0008] Beneficial effects of the embodiments of the present application: The front subframe provided in the embodiments of the present application utilizes a sub-cross beam to fix two sub-longitudinal beams to form a whole, and the sub-longitudinal beam is used to connect the front cross beam of the chemical warehouse, so that the connection strength between the sub-longitudinal beam and the front cross beam of the chemical warehouse is improved, thereby achieving the purpose of strengthening the overall structure of the vehicle by utilizing the front subframe, thereby effectively improving the bending and torsional rigidity of the vehicle.

[0009] In some embodiments, the front subframe further includes a connecting bracket, and both of the two sub-longitudinal beams are connected to the connecting bracket, and the connecting bracket is used to fix the sub-longitudinal beam to the front cross beam of the chemical warehouse.

[0010] By adopting the above technical solution, a connecting bracket is connected to the secondary longitudinal beam. Therefore, when the secondary longitudinal beam needs to be connected to the front cross beam of the chemical warehouse, the secondary longitudinal beam and the front cross beam of the chemical warehouse can be connected through the connecting bracket, which effectively improves the convenience of connection and assembly.

[0011] In some embodiments, a hollow portion is formed on the connecting bracket.

[0012] By adopting the above technical solution, a hollow portion is provided on the connecting bracket to reduce the use of materials, thereby reducing the weight of the connecting bracket, thereby achieving the purpose of reducing the weight of the front subframe.

[0013] In some embodiments, at least two connecting parts are formed on the connecting bracket, and the connecting parts are used to connect the front cross beam of the chemical warehouse.

[0014] By adopting the above technical solution, the connection is achieved through at least two connecting parts formed on the connecting bracket, which can effectively improve the connection strength between the connecting bracket and the front crossbeam of the connected chemical warehouse.

[0015] In some embodiments, the secondary cross beam and the secondary longitudinal beam are both integrated structures, and the secondary cross beam and the secondary longitudinal beam are fixed by welding; or, the secondary cross beam of the front subframe and the secondary longitudinal beam are connected to each other in an integrally formed manner.

[0016] By adopting the above technical solution, the sub-cross beam and sub-longitudinal beam of the integrated structure have better structural strength. The sub-cross beam and sub-longitudinal beam are fixed by welding, or the sub-cross beam and sub-longitudinal beam are connected to each other by one-piece molding, which can improve the overall structural strength of the front subframe.

[0017] In a second aspect, an embodiment of the present application provides a vehicle body structure, including a front longitudinal beam, a torsion box, a chemical compartment front cross beam, and a front subframe as described above, wherein the torsion box is fixedly connected to the front longitudinal beam, the chemical compartment front cross beam is fixedly connected to the torsion box, and the sub-longitudinal beam of the front subframe is fixedly connected to the chemical compartment front cross beam.

[0018] Beneficial effects of the embodiments of the present application: The vehicle body structure provided by the embodiments of the present application, the front cross beam of the chemical warehouse can be fixedly connected to the torsion box and the front subframe, so that the front cross beam of the chemical warehouse can be fixed to the torsion box and the secondary longitudinal beam of the front subframe at the same time, which can effectively improve the connection strength of the front cross beam of the chemical warehouse, and thus can improve the overall bending-torsional stiffness of the vehicle.

[0019] In some embodiments, the two secondary longitudinal beams are fixedly connected to the torsion box.

[0020] By adopting the above-mentioned technical solution, the two secondary longitudinal beams are fixedly connected to the torsion box, so that the secondary longitudinal beam, the torsion box and the front cross beam of the chemical warehouse are interconnected to form a triangular structure, that is, the connection strength between the secondary longitudinal beam, the torsion box and the front cross beam of the chemical warehouse is better, which can further improve the bending and torsional stiffness of the vehicle body structure.

[0021] In some embodiments, the front subframe further includes a connecting bracket, and the two sub-longitudinal beams are respectively fixedly connected to the front cross beam of the chemical warehouse through the connecting bracket.

[0022] By adopting the above technical solution, the connecting bracket is used to fix the auxiliary longitudinal beam and the front cross beam of the chemical warehouse respectively, so as to improve the convenience of connection and assembly.

[0023] In some embodiments, at least two installation points are formed between the connecting bracket and the front crossbeam of the chemical warehouse.

[0024] By adopting the above-mentioned technical solution, by forming at least two installation points between the connecting bracket and the front cross beam of the chemical warehouse, the connection strength between the front cross beam of the chemical warehouse and the connecting bracket is improved through the formed multiple installation points, thereby improving the overall bending and torsional stiffness of the vehicle body structure.

[0025] In some embodiments, the connecting bracket extends toward the front cross beam of the chemical warehouse and forms at least two connecting parts, and the installation point is formed on each of the connecting parts.

[0026] By adopting the above-mentioned technical solution, at least two connecting parts formed by extending the connecting bracket are used to fix the front cross beam of the chemical warehouse respectively, so as to further improve the connection strength between the connecting bracket and the front cross beam of the chemical warehouse, thereby achieving the purpose of improving the bending and torsional stiffness of the vehicle body structure.

[0027] In some embodiments, in the direction of gravity, the front crossbeam of the chemical warehouse has a connecting end surface facing downward, and the connecting portion is disposed on the connecting end surface and forms the installation point between the connecting portion and the connecting end surface.

[0028] By adopting the above technical solution, the connecting part is placed against the connecting end surface, and the connecting part and the connecting end surface are connected and fixed through the installation points, so as to realize the connection between the front crossbeam of the chemical warehouse and the secondary longitudinal beam through the connecting bracket.

[0029] In some embodiments, the vehicle body structure further includes a first anti-collision beam and a second anti-collision beam, the first anti-collision beam is connected to the front longitudinal beam, the second anti-collision beam is connected to the secondary longitudinal beam, and the first anti-collision beam and the second anti-collision beam are connected via a connecting structure.

[0030] By adopting the above-mentioned technical solution, in the event of a head-on collision, the first anti-collision beam and the second anti-collision beam can interact with each other through the action of the connecting structure, so that the collision force can be guided by the front longitudinal beam and the torsion box to the front cross beam of the chemical warehouse, and can also be guided by the secondary longitudinal beam to the front cross beam of the chemical warehouse, so as to improve the force transmission efficiency and thereby improve the stability of the vehicle body structure when a collision occurs.

[0031] In a third aspect, an embodiment of the present application further provides a vehicle, which includes the front subframe as described above, or includes the vehicle body structure as described above.

[0032] Beneficial effects of the embodiments of the present application: The vehicle provided by the embodiments of the present application includes the above-mentioned front subframe or body structure. On the basis that the above-mentioned front subframe or body structure has better bending and torsional stiffness, the vehicle also has better bending and torsional stiffness. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or related technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0034] Figure 1 A schematic diagram of the structure of a vehicle provided in an embodiment of the present application;

[0035] Figure 2 A bottom view of the vehicle body structure provided in an embodiment of the present application;

[0036] Figure 3 A side view of a vehicle body structure provided by an embodiment of the present application;

[0037] Figure 4 A schematic diagram of the structure of the front subframe provided in an embodiment of the present application;

[0038] Figure 5 A bottom view of the front subframe provided in an embodiment of the present application.

[0039] Among them, the reference numerals in the figure are:

[0040] 1000. Vehicles;

[0041] 100, controller; 200, battery cell; 300, motor; 400, vehicle body structure;

[0042] 410, front longitudinal beam; 420, torsion box; 430, front cross beam of chemical warehouse; 431, connection end face;

[0043] 440, front subframe; 441, sub-crossbeam; 442, sub-longitudinal beam; 443, connecting bracket; 4431, mounting point; 4432, connecting part; 4433, hollow part;

[0044] 450, first anti-collision beam; 460, second anti-collision beam; 470, connection structure;

[0045] G. Direction of gravity. DETAILED DESCRIPTION

[0046] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0047] In the description of the present application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0048] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0049] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0050] With the development of vehicle technology, people have put forward higher and higher requirements for the collision safety, ride comfort, compactness and other performance of vehicles. In CTC (Cell to Chassis, battery body integration, by integrating the battery cells directly into the body structure, the number of parts is reduced as much as possible, thereby improving the integration of the whole vehicle and optimizing the power distribution space) technology, the battery cells are directly integrated into the body structure of the vehicle, connected to the body structure of the vehicle as a whole, and bear the front or side load of the vehicle through the torsion box to reduce the load borne by the battery cells. In vehicles using CTC technology, the battery cells are integrated into the body structure of the vehicle, and a chemical compartment front crossbeam is set in the body structure to protect the battery cells. The chemical compartment front crossbeam is used to connect to the torsion box of the body structure, and the front longitudinal beam is connected to the torsion box to form a transmission path for the front collision force. However, the single force transmission path formed by connecting the chemical compartment front crossbeam only through the front longitudinal beam and the torsion box is low in force transmission efficiency, and the bending and torsional stiffness of the body structure is weak.

[0051] Based on the above considerations, in order to solve the problem of weak bending and torsional rigidity of the body structure of vehicles using battery body integration technology in related technologies, a front subframe is designed, and the secondary longitudinal beam of the front subframe can be connected to the front cross beam of the chemical compartment, so that the connection strength between the secondary longitudinal beam and the front cross beam of the chemical compartment is improved, thereby achieving the purpose of strengthening the overall structure of the vehicle by using the front subframe, thereby effectively improving the bending and torsional rigidity of the vehicle.

[0052] Please refer to Figure 1 , the body structure disclosed in the embodiment of the present application can be used in a variety of vehicles 1000; it can be understood that the vehicle 1000 can be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery cell 200 is arranged inside the vehicle 1000, and the battery cell 200 can be integrated into the body structure of the vehicle 1000. The battery cell 200 can be used to power the vehicle 1000. For example, the battery cell 200 can be used as an operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 100 and a motor 300. The controller 100 is used to control the battery cell 200 to power the motor 300, for example, for the starting, navigation and driving power requirements of the vehicle 1000.

[0053] In some embodiments of the present application, the battery cell 200 can not only serve as the operating power source of the vehicle 1000, but also serve as the driving power source of the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0054] According to some embodiments of the present application, referring to Figure 2 , Figure 4 and Figure 5The embodiment of the present application provides a front subframe 440, including a sub-crossbeam 441 and two sub-longitudinal beams 442, wherein the sub-crossbeam 441 connects the two sub-longitudinal beams 442; and the sub-longitudinal beam 442 is used to connect the front crossbeam 430 of the chemical warehouse.

[0055] Among them, the front subframe 440 is a chassis system component, which provides installation points for suspension swing arms, powertrains, stabilizer bars and other components.

[0056] The secondary cross beam 441 and the two secondary longitudinal beams 442 can be fixed together by bolt connection, spot welding connection, tailor-welding connection, etc.

[0057] The shapes of the two secondary longitudinal beams 442 may be the same or different.

[0058] Optionally, the secondary longitudinal beam 442 can be directly fixedly connected to the front cross beam 430 of the chemical warehouse by welding, bolting, etc.; or, the secondary longitudinal beam 442 can also be connected to the front cross beam 430 of the chemical warehouse by an intermediate connecting member (such as a connecting plate, a connecting rod, a connecting bracket, etc.).

[0059] The number of the secondary cross beam 441 can be one, and the opposite ends of the secondary cross beam 441 are respectively fixedly connected to the two secondary longitudinal beams 442, and the secondary cross beam 441 can form a gap with the front cross beam 430 of the chemical warehouse in the traveling direction of the vehicle 1000; or, the number of the secondary cross beams 441 can be two or any number above two, and multiple secondary cross beams 441 are arranged at intervals between the two secondary longitudinal beams 442, and the opposite ends of each secondary cross beam 441 are respectively fixedly connected to the two secondary longitudinal beams 442, so as to improve the overall structural strength of the front subframe 440.

[0060] The chemical compartment front cross beam 430 mentioned above refers to one of the cross beam structures facing the front sub-frame 440 side in the beam structure used to enclose an area for integrated assembly of the battery cells 200 in the vehicle 1000 .

[0061] For example, in some specific embodiments, the front cross beam 430 of the chemical warehouse has a connecting surface facing downward in the direction of gravity G, and the secondary longitudinal beam 442 can be moved upward from the bottom of the direction of gravity G and fit into the connecting surface of the front cross beam 430 of the chemical warehouse, and is fastened and fixed by fasteners such as bolts.

[0062] The front subframe 440 provided in the embodiment of the present application utilizes a sub-crossbeam 441 to fix two sub-longitudinal beams 442 to form a whole, and then utilizes the two sub-longitudinal beams 442 to connect the chemical warehouse front crossbeam 430, that is, the sub-longitudinal beam 442 of the subframe 440 is utilized to connect and strengthen the chemical warehouse front crossbeam 430, thereby achieving the purpose of utilizing the front subframe 440 to strengthen the overall structure of the vehicle 1000, thereby effectively improving the bending and torsional rigidity of the vehicle 1000.

[0063] Please refer to Figures 2 to 5 In some embodiments, the front sub-frame 440 further includes a connecting bracket 443 , and both of the two sub-longitudinal beams 442 are connected to the connecting bracket 443 , and the connecting bracket 443 is used to fix the sub-longitudinal beam 442 to the front cross beam 430 of the chemical warehouse.

[0064] The connecting bracket 443 is connected to the secondary longitudinal beam 442 , and the connecting bracket 443 can be connected to the front cross beam 430 of the chemical warehouse to form a fixation, so that the connecting bracket 443 can achieve relative fixation between the secondary longitudinal beam 442 and the front cross beam 430 of the chemical warehouse.

[0065] Optionally, the connecting bracket 443 includes but is not limited to brackets of various configurations such as a rectangular bracket, a circular bracket, a triangular bracket, and a polygonal bracket; illustratively, the connecting bracket 443 can adopt a bracket with a roughly trapezoidal structure, and one end of the connecting bracket 443 with the trapezoidal structure is fixedly connected to the secondary longitudinal beam 442, and the other end of the connecting bracket 443 with the trapezoidal structure is fixedly connected to the front cross beam 430 of the chemical warehouse, so as to achieve relative fixation between the front longitudinal beam 410 and the front cross beam 430 of the chemical warehouse.

[0066] Each of the auxiliary longitudinal beams 442 is fixedly connected to the front cross beam 430 of the chemical warehouse via a connecting bracket 443 ; or, each of the auxiliary longitudinal beams 442 is fixedly connected to the front cross beam 430 of the chemical warehouse via two or any number of connecting brackets 443 .

[0067] The connecting bracket 443 and the secondary longitudinal beam 442 may be fixed to each other by welding, bolt connection, integrated molding, or the like.

[0068] In this way, the connecting bracket 443 is used to fix the secondary longitudinal beam 442 to the front cross beam 430 of the chemical warehouse to improve the convenience of connection and assembly; at the same time, the connecting bracket 443 can be detachable relative to the secondary longitudinal beam 442 and the front cross beam 430 of the chemical warehouse. When the connection between the secondary longitudinal beam 442 and the front cross beam 430 of the chemical warehouse is damaged, the connecting bracket 443 can be replaced, which effectively improves the convenience of maintenance of the connecting bracket 443.

[0069] Please refer to Figure 4 and Figure 5 In some embodiments, a hollow portion 4433 is formed on the connecting bracket 443 .

[0070] It can be understood that the hollow portion 4433 may include a through structure such as a hollow hole, a hollow window, etc. Optionally, the hollow portion 4433 may be, but is not limited to, a circular through structure, a polygonal through structure, or other regular or irregular structures. The number of the hollow portions 4433 may be one or any number of more than one.

[0071] In this way, the hollow portion 4433 is provided on the connecting bracket 443 to reduce the use of materials, thereby reducing the weight of the connecting bracket 443 and achieving the purpose of reducing the weight of the front sub-frame 440.

[0072] Exemplarily, in some embodiments, the shape of the hollow portion 4433 is consistent with the shape of the connecting bracket 443; thereby, the opening range of the hollow portion 4433 can be further increased, thereby further improving the weight reduction effect.

[0073] Exemplarily, when the connecting bracket 443 has a trapezoidal structure, the hollow portion 4433 may be a triangular or trapezoidal hollow hole; taking the triangular hollow hole as an example, the three sides of the triangular hollow hole are respectively oriented toward and close to the lower bottom side and two waist sides of the connecting bracket 443 with a trapezoidal structure, so as to fully increase the range of the hollow hole.

[0074] Please refer to Figures 2 to 5 In some embodiments, at least two connecting parts 4432 are formed on the connecting bracket 443 , and the connecting parts 4432 are used to connect the front cross beam 430 of the chemical warehouse.

[0075] It can be understood that the connection part 4432 can be a plate structure or a block structure formed by the protrusion of the connection bracket 443, and the fixed connection of the connection bracket 443 is achieved by fixing the connection part 4432 to the front crossbeam 430 of the chemical warehouse.

[0076] Exemplarily, two connection parts 4432 may be protruded from the connection bracket 443, and the two connection parts 4432 are arranged at intervals, and the two connection parts 4432 are respectively fixedly connected to the front cross beam 430 of the chemical warehouse by bolts.

[0077] In this arrangement, the connection is achieved by at least two connecting parts 4432 formed on the connecting bracket 443, that is, the number of connecting points between the connecting bracket 443 and the front beam 430 of the chemical warehouse is increased, which can effectively improve the connection strength between the connecting bracket 443 and the connected front beam 430 of the chemical warehouse.

[0078] Please refer to Figure 4 and Figure 5 In some embodiments, the sub-cross beam 441 and the sub-longitudinal beam 442 are both integrated structures, and the sub-cross beam 441 and the sub-longitudinal beam 442 are fixed by welding; or, the sub-cross beam 441 and the sub-longitudinal beam 442 of the front subframe 440 are connected to each other in an integrated manner.

[0079] The secondary cross beam 441 and the secondary longitudinal beam 442 can be stamped and formed as one piece, and then the secondary cross beam 441 and the two secondary longitudinal beams 442 are fixed by welding. Alternatively, the secondary cross beam 441 and the secondary longitudinal beam 442 are connected to each other in an integrally formed manner, for example, the secondary cross beam 441 and the secondary longitudinal beam 442 are directly stamped and formed and connected by an integrated stamping method.

[0080] Such a configuration can improve the material utilization rate of manufacturing the secondary cross beam 441 and the secondary longitudinal beam 442 and reduce the process steps. The secondary cross beam 441 and the secondary longitudinal beam 442 of the integrated structure have better structural strength, and the secondary cross beam 441 and the secondary longitudinal beam 442 are fixed by welding to improve the overall structural strength of the front subframe 440.

[0081] Please refer to Figure 2 and Figure 3 In the second aspect, an embodiment of the present application provides a vehicle body structure 400, including a front longitudinal beam 410, a torsion box 420, a chemical compartment front cross beam 430 and a front subframe 440 as described above, wherein the torsion box 420 is fixedly connected to the front longitudinal beam 410, the chemical compartment front cross beam 430 is fixedly connected to the torsion box 420, and the sub-longitudinal beam 442 of the front subframe 440 is fixedly connected to the chemical compartment front cross beam 430.

[0082] The front longitudinal beam 410 refers to a beam structure used to bear the load; the torsion box 420 is used to connect the front longitudinal beam 410 and the chemical warehouse front cross beam 430 and transmit the force. The front longitudinal beam 410 and the torsion box 420 can be fixed by welding or bolting, and the chemical warehouse front cross beam 430 and the torsion box 420 can also be fixed by welding or bolting.

[0083] Exemplarily, in the traveling direction of the vehicle 1000 , the front longitudinal beam 410 and the chemical chamber front cross beam 430 may be respectively connected to opposite ends of the torsion box 420 to realize the force transmission function of the torsion box 420 .

[0084] It should be understood that when the secondary longitudinal beam 442 of the front subframe 440 and the chemical compartment front cross beam 430 are fixedly connected, the secondary longitudinal beam 442 of the front subframe 440 can strengthen the structural strength of the chemical compartment front cross beam 430 to improve the overall bending and torsional rigidity of the vehicle body structure 400. At the same time, when the chemical compartment front cross beam 430 and the torsion box 420 are fixedly connected to form a force transmission path between the front longitudinal beam 410, the torsion box 420 and the chemical compartment front cross beam 430, the front subframe 440 and the chemical compartment front cross beam 430 can also be connected to form a force transmission path, so that the force transmission path is not unique in the event of a front collision, which can effectively improve the force transmission efficiency and thus improve the stability of the vehicle body structure 400.

[0085] The vehicle body structure 400 provided in the embodiment of the present application, the chemical warehouse front cross beam 430 can be fixedly connected to the torsion box 420 and the front subframe 440, so that the chemical warehouse front cross beam 430 can be fixed to the torsion box 420 and the sub-longitudinal beam 442 of the front subframe 440 at the same time, which can effectively improve the connection strength of the chemical warehouse front cross beam 430, and thus can improve the overall bending-torsion stiffness of the vehicle body structure 400.

[0086] Please refer to Figures 3 to 5 In some embodiments, two secondary longitudinal beams 442 are fixedly connected to the torsion box 420 .

[0087] Optionally, the two secondary longitudinal beams 442 may be fixed to the torsion box 420 by welding, bolt connection, or the like.

[0088] It can be understood that since the front subframe 440 is generally assembled below the front longitudinal beam 410 in the gravity direction G, the two sub-longitudinal beams 442 of the front subframe 440 are located below the gravity direction of the torque box 420 and are fixedly connected to the torque box 420 from the bottom to the top in the gravity direction G.

[0089] In this arrangement, the chemical warehouse front cross beam 430 is fixedly connected to the torsion box 420 and the secondary longitudinal beam 442 respectively, and the secondary longitudinal beam 442 and the torsion box 420 are also fixed to each other. Therefore, in this area, the chemical warehouse front cross beam 430, the torsion box 420 and the secondary longitudinal beam 442 are interconnected to form a triangular structure, and the connection strength between the chemical warehouse front cross beam 430, the torsion box 420 and the secondary longitudinal beam 442 is better, so that the overall bending-torsion stiffness of the vehicle body structure 400 is effectively improved.

[0090] Please refer to Figures 2 to 5 In some embodiments, the front sub-frame 440 further includes a connecting bracket 443 , and the two sub-longitudinal beams 442 are fixedly connected to the front cross beam 430 of the chemical warehouse through the connecting brackets 443 .

[0091] The connecting bracket 443 is used to connect and fix the secondary longitudinal beam 442 and the front cross beam 430 of the chemical warehouse.

[0092] Among them, the connecting bracket 443 and the secondary longitudinal beam 442 can be fixed by welding, bolt connection, integrated molding, etc.; similarly, the connecting bracket 443 and the front cross beam 430 of the chemical warehouse can also be fixed by welding, bolt connection, etc.

[0093] In this arrangement, the connecting bracket 443 is used to fix the secondary longitudinal beam 442 and the chemical warehouse front cross beam 430 respectively, so as to improve the convenience of connection and assembly; at the same time, the connecting bracket 443 can be detachable relative to the secondary longitudinal beam 442 and the chemical warehouse front cross beam 430. When the connection between the secondary longitudinal beam 442 and the chemical warehouse front cross beam 430 is damaged, the connecting bracket 443 can be replaced, which effectively improves the convenience of maintenance of the connecting bracket 443.

[0094] Please refer to Figures 2 to 5 In some embodiments, at least two installation points 4431 are formed between the connecting bracket 443 and the front crossbeam 430 of the chemical warehouse.

[0095] The installation point 4431 refers to a fixed position formed between the connecting bracket 443 and the front cross beam 430 of the chemical warehouse. For example, when the connecting bracket 443 and the front cross beam 430 of the chemical warehouse are connected and fixed by bolts, the place where the bolts are connected between the connecting bracket 443 and the front cross beam 430 of the chemical warehouse is the installation point 4431; when the connecting bracket 443 and the front cross beam 430 of the chemical warehouse are fixed by spot welding, the spot welding position between the connecting bracket 443 and the front cross beam 430 of the chemical warehouse is the installation point 4431.

[0096] It should be understood that the more the installation points 4431 between the connecting bracket 443 and the front cross beam 430 of the chemical warehouse are, the stronger the connection strength between the connecting bracket 443 and the front cross beam 430 of the chemical warehouse will be.

[0097] Optionally, taking the example of the connection between the connecting bracket 443 and the front cross beam 430 of the chemical warehouse fixedly connected by bolts, the method of increasing the number of installation points 4431 between the connecting bracket 443 and the front cross beam 430 of the chemical warehouse can be: using multiple bolts on one connecting bracket 443 to fix the connection with the front cross beam 430 of the chemical warehouse; or, the secondary longitudinal beam 442 is connected to the front cross beam 430 of the chemical warehouse through two or more connecting brackets 443, and at least one installation point 4431 is formed between each connecting bracket 443 and the front cross beam 430 of the chemical warehouse.

[0098] By configuring in this way, at least two installation points 4431 are formed between the connecting bracket 443 and the front cross beam 430 of the chemical warehouse, and the connection strength between the front cross beam 430 of the chemical warehouse and the connecting bracket 443 is improved through the formed multiple installation points 4431, thereby improving the overall bending and torsional stiffness of the vehicle body structure 400.

[0099] Please refer to Figures 2 to 5 In some embodiments, the connecting bracket 443 extends toward the front cross beam 430 of the chemical chamber and forms at least two connecting portions 4432 , and each connecting portion 4432 is formed with a mounting point 4431 .

[0100] It can be understood that the connection part 4432 can be a plate structure or a block structure formed by the protrusion of the connection bracket 443, and the fixed connection of the connection bracket 443 is achieved by fixing the connection part 4432 to the front crossbeam 430 of the chemical warehouse.

[0101] Exemplarily, the connecting bracket 443 extends toward the chemical warehouse front beam 430 and forms two connecting parts 4432, and the two connecting parts 4432 are spaced apart along the length direction of the chemical warehouse front beam 430, and the two connecting parts 4432 are respectively fixedly connected to the chemical warehouse front beam 430 by bolts.

[0102] In this way, at least two connecting parts 4432 formed by extending the connecting bracket 443 are respectively fixedly connected to the chemical warehouse front beam 430 to further improve the connection strength between the connecting bracket 443 and the chemical warehouse front beam 430, thereby achieving the purpose of improving the bending and torsional stiffness of the vehicle body structure 400.

[0103] Please refer to Figures 2 to 5 In some embodiments, in the gravity direction G, the front crossbeam 430 of the chemical warehouse has a connecting end surface 431 facing downward, and the connecting portion 4432 is disposed on the connecting end surface 431 and forms an installation point 4431 between the connecting end surface 431.

[0104] Among them, the connecting end face 431 refers to one of the end side faces on the front cross beam 430 of the chemical warehouse; the connecting end face 431 faces downward in the gravity direction G, so that the connecting part 4432 can be upward from the bottom of the gravity direction G and against the connecting end face 431, so as to facilitate the secondary longitudinal beam 442 to be better connected to the front cross beam 430 of the chemical warehouse.

[0105] Please refer to Figures 2 to 5 In some embodiments, the vehicle body structure 400 further includes a first anti-collision beam 450 and a second anti-collision beam 460 , wherein the first anti-collision beam 450 is connected to the front longitudinal beam 410 , the second anti-collision beam 460 is connected to the secondary longitudinal beam 442 , and the first anti-collision beam 450 and the second anti-collision beam 460 are connected via a connecting structure 470 .

[0106] The first anti-collision beam 450 refers to a beam structure used to withstand collisions; in the event of a head-on collision, the first anti-collision beam 450 can be impacted, and the collision force generated by the impact can form a force transmission path through the front longitudinal beam 410, the torsion box 420 and the chemical warehouse front cross beam 430.

[0107] The second anti-collision beam 460 refers to a beam structure used to withstand collisions; in the event of a head-on collision, the first anti-collision beam 450 can be impacted, and the collision force generated by the impact can form a force transmission path through the secondary longitudinal beam 442 of the front subframe 440 and the front cross beam 430 of the chemical warehouse.

[0108] The connecting structure 470 can be but is not limited to a connecting beam, a connecting rod, etc.; the connecting structure 470 is used to connect the first anti-collision beam 450 and the second anti-collision beam 460 to form a whole, so that the second anti-collision beam 460 can withstand the impact together with the first anti-collision beam 450, or the first anti-collision beam 450 and the second anti-collision beam 460 can transmit the impact force generated by the collision to each other to divert the collision impact.

[0109] With such arrangement, in the event of a head-on collision, the first anti-collision beam 450 and the second anti-collision beam 460 can interact with each other through the connecting structure 470, so that the collision force can be guided by the front longitudinal beam 410 and the torsion box 420 to the chemical warehouse front cross beam 430, and can also be guided by the secondary longitudinal beam 442 to the chemical warehouse front cross beam 430, so as to improve the force transmission efficiency, thereby improving the stability of the vehicle body structure 400 when a collision occurs, and can also suppress the upward tilt of the torsion box 420 during a head-on collision.

[0110] Below, the vehicle body structure 400 of the present application will be described in conjunction with specific implementations.

[0111] Please refer to Figures 2 to 5 In some specific embodiments, the vehicle body structure 400 includes a front longitudinal beam 410, a torsion box 420, a chemical compartment front cross beam 430 and a front subframe 440, and the front subframe 440 includes a sub-cross beam 441, two sub-cross beams 442 and two connecting brackets 443. The front longitudinal beam 410 is fixedly connected to the torsion box 420 by bolts, and the torsion box 420 is fixedly connected to the chemical compartment front cross beam 430 by bolts. The opposite ends of the sub-cross beam 441 are fixedly connected to the two sub-cross beams 442 by welding, and the sub-cross beam 442 is fixedly connected to the chemical compartment front cross beam 430 by connecting brackets 443, and the sub-cross beam 442 is fixedly connected to the torsion box 420 by bolts.

[0112] Among them, the connecting bracket 443 is roughly trapezoidal in structure, one end of the connecting bracket 443 of the trapezoidal structure is fixedly connected to the secondary longitudinal beam 442 by bolts, and the other end of the connecting bracket 443 of the trapezoidal structure extends to form two spaced connecting parts 4432, and the two connecting parts 4432 are then fixed to the front crossbeam 430 of the chemical warehouse by bolts.

[0113] In addition, a hollow portion 4433 is provided in the middle of the connecting bracket 443 to achieve the purpose of weight reduction.

[0114] In this configuration, the chemical compartment front cross beam 430 is fixedly connected to the torque box 420, and at the same time, the secondary longitudinal beam 442 of the front subframe 440 is also fixedly connected to the chemical compartment front cross beam 430 through the connecting bracket 443, thereby effectively strengthening the structural strength of the chemical compartment front cross beam 430, thereby improving the overall structural strength and bending and torsional rigidity and torsional rigidity of the vehicle body structure 400. In addition, by fixing the secondary longitudinal beam 442 of the front subframe 440 to the chemical compartment front cross beam 430, the force transmission path of the front collision can be guided to improve the force transmission efficiency.

[0115] Please refer to Figures 1 to 3 In a third aspect, an embodiment of the present application further provides a vehicle 1000, which includes the front subframe 440 as described above, or includes the vehicle body structure 400 as described above.

[0116] The vehicle 1000 provided in the embodiment of the present application includes the front subframe 440 or the body structure 400 described above. On the basis that the front subframe 440 or the body structure 400 described above has better bending and torsional rigidity, the vehicle 1000 also has better bending and torsional rigidity.

[0117] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A front subframe, characterized in that: It comprises a secondary crossbeam and two secondary longitudinal beams, wherein the secondary crossbeam connects the two secondary longitudinal beams; and the secondary longitudinal beam is used to connect the front crossbeam of the chemical warehouse.

2. The front subframe according to claim 1, characterized in that: The front sub-frame also includes a connecting bracket, and the two sub-longitudinal beams are both connected to the connecting bracket, and the connecting bracket is used to fix the sub-longitudinal beam to the front cross beam of the chemical warehouse.

3. The front subframe according to claim 2, characterized in that: A hollow portion is formed on the connecting bracket.

4. The front subframe according to claim 2 or 3, characterized in that: At least two connection parts are formed on the connection bracket, and the connection parts are used to connect the front cross beam of the chemical warehouse.

5. The front subframe according to any one of claims 1 to 4, characterized in that: The secondary cross beam and the secondary longitudinal beam of the front subframe are both integrated structures, and the secondary cross beam and the secondary longitudinal beam are fixed by welding; or the secondary cross beam and the secondary longitudinal beam of the front subframe are connected to each other in an integrally formed manner.

6. A vehicle body structure, characterized in that: include front longitudinal beam; A torsion box, the torsion box is fixedly connected to the front longitudinal beam; A chemical warehouse front crossbeam, the chemical warehouse front crossbeam is fixedly connected to the torsion box; as well as The front subframe as described in any one of claims 1 to 5, wherein the secondary longitudinal beam of the front subframe is fixedly connected to the front cross beam of the chemical warehouse.

7. The vehicle body structure according to claim 6, characterized in that: The two secondary longitudinal beams are fixedly connected to the torsion box.

8. The vehicle body structure according to claim 6 or 7, characterized in that: The front sub-frame also includes a connecting bracket, and the two sub-longitudinal beams are respectively fixedly connected to the front cross beam of the chemical warehouse through the connecting bracket.

9. The vehicle body structure according to claim 8, characterized in that: At least two installation points are formed between the connecting bracket and the front crossbeam of the chemical warehouse.

10. The vehicle body structure according to claim 9, characterized in that: The connecting bracket extends toward the front cross beam of the chemical warehouse and forms at least two connecting parts, and the installation point is formed on each of the connecting parts.

11. The vehicle body structure according to claim 10, characterized in that: In the direction of gravity, the front crossbeam of the chemical warehouse has a connecting end surface facing downward, and the connecting portion is disposed on the connecting end surface and forms the installation point between the connecting portion and the connecting end surface.

12. The vehicle body structure according to any one of claims 6 to 11, characterized in that: The vehicle body structure further includes a first anti-collision beam and a second anti-collision beam, wherein the first anti-collision beam is connected to the front longitudinal beam, the second anti-collision beam is connected to the secondary longitudinal beam, and the first anti-collision beam and the second anti-collision beam are connected via a connecting structure.

13. A vehicle, characterized in that: It comprises the front subframe as claimed in any one of claims 1 to 5, or comprises the vehicle body structure as claimed in any one of claims 6 to 12.

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