Torsion box and vehicle

Abstract

The utility model provides a torsion box which comprises a torsion box body connected to a vehicle body and a reinforcing beam connected to the torsion box body. A total force transmission cavity is defined by the torsion box body and a vehicle body. The reinforcing beams are located in the force transmission main cavity, and force transmission branch cavities are defined in the force transmission main cavity. And at least part of cavity bodies of the force transfer sub-cavities are aligned with the cabin longitudinal beam front section in the front-back direction of the vehicle body. According to the torsion box, a direct force transmission channel can be established in the front-back direction of a vehicle body, the force transmission effect is improved, the overall rigidity of the torsion box body can be improved, and then the torsion resistance of the vehicle body is improved; therefore, the reinforcing beams are arranged in the force transmission main cavity to define the force transmission branch cavities, the overall torsion performance of the vehicle body can be improved, the collision force transmission performance of the vehicle body can be improved, and then improvement of the performance of the whole vehicle is promoted.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle body structures, and in particular relates to a torsion box and a vehicle. Background Art

[0002] The torsion box is a key component for improving the torsional stiffness and collision force transmission performance of the vehicle's body in white, so it is very important for improving the performance of the vehicle. The traditional torsion box solution is to enclose the torsion box and the lower front panel of the vehicle body to form a total force transmission cavity. This structure has a single force transmission path and low stiffness. Therefore, in the face of the current increasing performance requirements, there are problems with insufficient torsional stiffness and force transmission performance, which urgently needs to be improved. Utility Model Content

[0003] The embodiment of the utility model provides a torsion box, which is intended to improve the torsional rigidity and force transmission performance of the vehicle body.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: in the first aspect, a torsion box is provided, including a torsion box body connected to the vehicle body, and a reinforcing beam connected to the torsion box body; a total force transmission cavity is formed between the torsion box body and the vehicle body; the reinforcing beam is located in the total force transmission cavity, and a force transmission sub-cavity is formed in the total force transmission cavity; wherein, at least part of the cavity of the force transmission sub-cavity is aligned with the front section of the cabin longitudinal beam along the front and rear direction of the vehicle body.

[0005] In combination with the first aspect, in a possible implementation, the torsion box further includes a reinforcing plate, which is conformally attached and fixed to the surface of the torsion box body, and the reinforcing beam is fixedly connected to the reinforcing plate.

[0006] In some embodiments, a reinforcing support member is provided in the force transmission cavity along the up-down direction, the upper end of the reinforcing support member is fixedly connected to the reinforcing beam, and the lower end is fixedly connected to the torsion box body to form a sub-frame mounting point.

[0007] Exemplarily, the lower end of the reinforcing support member has a connection hole extending upward, the connection hole is used to connect the sub-frame fastener, and the torque box body is provided with an avoidance hole for avoiding the sub-frame fastener.

[0008] For example, two reinforcing beams are spaced apart in the width direction of the vehicle body in the total force transmission cavity, and the two reinforcing beams respectively form a force transmission sub-cavity with the torsion box body, one of the force transmission sub-cavities is aligned with the front section of the cabin longitudinal beam along the front-rear direction of the vehicle body, and each force transmission sub-cavity is provided with at least one reinforcing support member.

[0009] Exemplarily, the surface of the torsion box body has raised or recessed reinforcing ribs, and the lower end of each reinforcing support member is connected to the reinforcing ribs.

[0010] In combination with the first aspect, in a possible implementation, the reinforcing beam is bent on both sides along the width direction of the vehicle body to form support portions, and the portion of the reinforcing beam located between the support portions on both sides forms a main body portion. The front and rear ends of the main body portion and the edges of the support portion away from the main body portion both have overlapping edges, and each overlapping edge is overlapped and fixed to the surface of the torque box body.

[0011] In some embodiments, the torque box body forms a first flange, a second flange, a third flange, and a fourth flange around the periphery of the total force transmission cavity; wherein the first flange is overlapped and fixed to the rear section of the cabin longitudinal beam, the second flange is overlapped and fixed to the cabin reinforcement cross beam, the third flange is overlapped and fixed to the front enclosure middle channel connecting plate, and the fourth flange is overlapped and fixed to the front enclosure lower plate.

[0012] For example, one end of the second flange is bent and extended forward to form a connecting section, and the connecting section is connected to the front end of the first flange through a vertical joint surface as a whole, and the vertical joint surface is fitted and fixed to the side wall of the rear section of the cabin longitudinal beam.

[0013] The beneficial effect of the torsion box provided by the utility model is that: compared with the prior art, the torsion box of the utility model is provided with a reinforcing beam in the total force transmission cavity enclosed between the torsion box body and the vehicle body to form a force transmission sub-cavity, which can not only establish a direct force transmission channel in the front and rear directions of the vehicle body to improve the force transmission effect, but also improve the overall stiffness of the total force transmission cavity, thereby improving the torsional properties of the vehicle body; since at least part of the cavity of the force transmission sub-cavity is aligned front to back with the front section of the cabin longitudinal beam, the total force transmission cavity is located directly behind the front section of the cabin longitudinal beam, and this position serves as the hub area of ​​the front and rear force transmission channels of the vehicle body, which can not only directly form front and rear force transmission channels by utilizing the force transmission sub-cavity to improve the head-on collision performance of the vehicle body, but also the total force transmission cavity has a force transmission function along the width direction of the vehicle body, thereby improving the side collision performance of the vehicle body; thus, by providing a reinforcing beam in the total force transmission cavity to enclose the force transmission sub-cavity, not only the overall torsional performance of the vehicle body can be improved, but also the collision force transmission effect of the vehicle body can be improved, thereby promoting the improvement of the performance of the entire vehicle.

[0014] In a second aspect, an embodiment of the utility model further provides a vehicle, comprising the above-mentioned torque box.

[0015] The beneficial effect of the vehicle provided by the utility model is that: compared with the prior art, the vehicle of the utility model adopts the above-mentioned torsion box, and a reinforcing beam is arranged in the total force transmission cavity enclosed between the torsion box body and the vehicle body to form a force transmission sub-cavity, which can not only establish a direct force transmission channel in the front and rear directions of the vehicle body to improve the force transmission effect, but also improve the overall stiffness of the total force transmission cavity, thereby improving the torsional properties of the vehicle body. At the same time, the total force transmission cavity also has a force transmission function along the width direction of the vehicle body, which helps to improve the side collision performance of the vehicle body; therefore, by arranging a reinforcing beam in the total force transmission cavity to enclose a force transmission sub-cavity, not only the overall torsional performance of the vehicle body can be improved, but also the collision force transmission performance of the vehicle body can be improved, thereby promoting the improvement of the performance of the entire vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the three-dimensional structure of a torque box provided in an embodiment of the utility model;

[0017] Figure 2 A schematic diagram of the connection structure between the torsion box and the vehicle body provided in an embodiment of the utility model;

[0018] Figure 3 A schematic diagram of the exploded structure of the torsion box provided in an embodiment of the utility model;

[0019] Figure 4 A schematic cross-sectional view of a torque box provided in an embodiment of the utility model along the width direction of the vehicle body.

[0020] In the figure: 10, torque box body; 100, total force transmission cavity; 101, avoidance hole; 102, reinforcing rib; 11, first flange; 12, second flange; 121, connecting section; 13, third flange; 14, fourth flange; 15, vertical joint surface; 20, reinforcing beam; 200, force transmission cavity; 21, supporting part; 22, main body; 23, overlapping edge; 30, reinforcing plate; 40, reinforcing support member; 41, connecting hole; 50, front section of cabin longitudinal beam; 60, rear section of cabin longitudinal beam; 70, cabin reinforcing cross beam; 80, front enclosure middle channel connecting plate; 90, front enclosure lower plate. DETAILED DESCRIPTION

[0021] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0022] It should be noted that when an element is referred to as being "disposed on" or "connected to" another element, it may be directly on the other element or indirectly on the other element. It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the 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 cannot be understood as a limitation on the present application.

[0023] The terms "first", "second", etc. used in this application are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, 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 "multiple" or "several" is two or more, unless otherwise clearly and specifically defined.

[0024] In addition, it should be noted that the descriptions of "the front and rear direction of the vehicle body" and "the width direction of the vehicle body" in this application correspond to the actual position of the car, that is, the front and rear direction of the vehicle body refers to the direction of the line connecting the front and rear of the vehicle, and the width direction of the vehicle body refers to the direction of the line connecting the rearview mirrors on both sides of the vehicle body.

[0025] Please also read Figures 1 to 4 The torque box provided by the utility model is now described. The torque box includes a torque box body 10 connected to the vehicle body, and a reinforcing beam 20 connected to the torque box body 10; a total force transmission cavity 100 is formed between the torque box body 10 and the vehicle body; the reinforcing beam 20 is located in the total force transmission cavity 100, and a force transmission sub-cavity 200 is formed in the total force transmission cavity 100; wherein, at least part of the cavity of the force transmission sub-cavity 200 is aligned with the front section 50 of the cabin longitudinal beam along the front-rear direction of the vehicle body.

[0026] First of all, it needs to be explained that the cabin longitudinal beam assembly includes a cabin longitudinal beam front section 50 extending along the front and rear directions of the vehicle body, and a cabin longitudinal beam rear section 60 connected to the rear end of the cabin longitudinal beam front section 50; wherein, the connecting portion of the cabin longitudinal beam front section 50 and the cabin longitudinal beam rear section 60 is connected to the cabin reinforcing cross beam 70 (used to connect the two cabin longitudinal beams into one), and the cabin longitudinal beam rear section 60 is a structure extending inclined or curved toward the outside of the vehicle body (the two cabin longitudinal beam rear sections 60 form an eight-shaped structure), and in addition, the cabin longitudinal beam and the cabin reinforcing cross beam 70 usually have a certain height difference, and the front enclosure lower plate 90 is arranged in the area of ​​the cabin reinforcing cross beam 70. Of course, the front enclosure lower plate 90 is overlapped and fixed on the cabin longitudinal beam rear section 60 and the cabin reinforcing cross beam 70, and the middle area of ​​the front enclosure lower plate 90 has a front enclosure middle channel connecting plate 80 connected to the cabin reinforcing cross beam 70.

[0027] Based on the above-mentioned vehicle body structure, there are multiple force transmission paths in the area directly behind the front section 50 of the cabin longitudinal beam, one of which is a force transmission path formed along the front section 50 of the cabin longitudinal beam in the front and rear direction of the vehicle body, another is a force transmission path formed along the cabin reinforcement beam 70 in the width direction of the vehicle body, and another force transmission path is a force transmission path along the width direction of the vehicle body formed by the transition effect of the front center channel connecting plate 80 in the width direction of the vehicle body. The above three force transmission paths converge in the area directly behind the front section 50 of the cabin longitudinal beam. Therefore, in this embodiment, fixing the torsion box body 10 to the area directly behind the front section 50 of the cabin longitudinal beam can enhance the structural strength of this area, thereby improving the overall structural stiffness and torsional performance of the front part of the vehicle body.

[0028] It should be noted that, in the present embodiment, the torque box body 10 can be connected to the vehicle body by welding, riveting or screwing. Welding can be preferably used. Specifically, the peripheral part of the torque box body 10 can be arranged based on the actual shape of the above-mentioned vehicle body structure (for example, the torque box body 10 can be buckled on the vehicle body with a structure similar to a multi-sided cone bowl, so that one edge is connected to the rear section 60 of the cabin longitudinal beam, one edge is connected to the cabin reinforcement beam 70, one edge is connected to the front wall middle channel connecting plate 80, and one edge is connected to the front wall lower plate 90, so that the four edges are reliably connected to the corresponding parts of the vehicle body to form a closed total force transmission cavity 100), so that the torque box body 10 is located in the area directly behind the front section 50 of the cabin longitudinal beam, thereby ensuring that the force transmission sub-cavity 200 formed by the reinforcement beam 20 in the total force transmission cavity 100 can have a cavity part that is at least partially aligned with the front section 50 of the cabin longitudinal beam, thereby ensuring that a straight force transmission path can be formed in the front and rear directions of the vehicle body.

[0029] In this embodiment, the reinforcing beam 20 can specifically be a groove-shaped sheet metal part or a die-casting part. The reinforcing beam 20 is buckled on the torque box body 10 and connected and fixed by welding, screwing or riveting. Welding and fixing can be preferably used here. After fixing, the groove of the reinforcing beam 20 is closed to form a force transmission cavity 200. The force transmission cavity 200 can be used to improve the torsional performance of the torque box body 10 on the one hand, and can be aligned with the front section 50 of the cabin longitudinal beam on the other hand to transmit force along the front and rear direction of the vehicle body; it should be noted that the number of reinforcing beams 20 can be one or more. Considering the internal space and stiffness improvement effect of the total force transmission cavity 100, it is preferred to use two reinforcing beams 20 to be arranged in the total force transmission cavity 100 and form a force transmission cavity 200 respectively, wherein one of the force transmission cavities 200 is aligned with the front section 50 of the cabin longitudinal beam, or two force transmission cavities 200 can be placed on both sides of the front section 50 of the cabin longitudinal beam.

[0030] Compared with the prior art, the torsion box provided in the present embodiment has a reinforcing beam 20 arranged in the total force transmission cavity 100 formed between the torsion box body 10 and the vehicle body to form a force transmission sub-cavity 200, which can not only establish a direct force transmission channel in the front-to-rear direction of the vehicle body to improve the force transmission effect, but also improve the overall stiffness of the total force transmission cavity 100, thereby improving the torsional properties of the vehicle body; since at least part of the cavity of the force transmission sub-cavity 200 is aligned front-to-rear with the front section 50 of the cabin longitudinal beam, the total force transmission cavity 100 is located directly behind the front section 50 of the cabin longitudinal beam, and this position serves as the pivot area of ​​the front and rear force transmission channels of the vehicle body, which can not only directly form front and rear force transmission channels by using the force transmission sub-cavity 200 to improve the head-on collision performance of the vehicle body, but also the total force transmission cavity 100 has a force transmission function along the width direction of the vehicle body, thereby improving the side collision performance of the vehicle body; therefore, by arranging the reinforcing beam 20 in the total force transmission cavity 100 to enclose the force transmission sub-cavity 200, not only the overall torsional performance of the vehicle body can be improved, but also the collision force transmission effect of the vehicle body can be improved, thereby promoting the improvement of the performance of the entire vehicle.

[0031] In some embodiments, see Figure 1 and Figure 3 The torsion box also includes a reinforcing plate 30, which is attached and fixed to the surface of the torsion box body 10, and the reinforcing beam 20 is fixedly connected to the reinforcing plate 30. Here, the reinforcing plate 30 covers most of the surface of the torsion box body 10, and should at least cover the surface area corresponding to the reinforcing beam 20, so as to ensure the structural rigidity and torsion resistance of the force transmission cavity 200 area; after the reinforcing plate 30 and the surface of the torsion box body 10 are attached, they can be connected and fixed by welding, riveting or screwing. The reinforcing plate 30 can be attached to the upper surface of the torsion box body 10, or it can be attached to the lower surface of the torsion box body 10. Here, it is preferred to attach the reinforcing plate 30 to the upper surface of the torsion box body 10, that is, the reinforcing plate 30 is located inside the cavity of the force transmission cavity 100, thereby avoiding the reinforcing plate 30 from being exposed and avoiding the reinforcing plate 30 from occupying the external space and affecting the layout of the surrounding parts.

[0032] For some possible implementations, see Figure 3 and Figure 4A reinforcing support 40 is arranged in the force transmission chamber 200 along the up-down direction. The upper end of the reinforcing support 40 is fixedly connected to the reinforcing beam 20, and the lower end is fixedly connected to the torque box body 10 to form a sub-frame mounting point. By providing the reinforcing support 40, the opposite walls of the reinforcing beam 20 and the torque box body 10 can be connected and supported in the vertical direction, thereby improving the structural strength and torsion resistance of the force transmission chamber 200; in addition, the lower end of the reinforcing support 40 connected to the torque box body 10 can also be used as a sub-frame mounting point to connect and fix the sub-frame, so that the exciting force generated by the road surface exciting the sub-frame can be dispersedly transmitted to the entire torque box by the reinforcing support 40, and then dispersedly transmitted to the vehicle body, avoiding the concentration of force on the connection between the vehicle body and the sub-frame.

[0033] It should be noted that, in this embodiment, the lower end of the reinforcing support member 40 has a connection hole 41 extending upward, and the connection hole 41 is used to connect the sub-frame fastener, and the torque box body 10 is provided with an avoidance hole 101 for avoiding the sub-frame fastener. The sub-frame fastener can be a bolt, and the connection hole 41 at the lower end of the reinforcing support member 40 can be a threaded hole matching the sub-frame fastener. The sub-frame fastener passes through the avoidance hole 101 on the torque box body 10 and is screwed and fixed with the connection hole 41, which is simple and convenient to assemble.

[0034] For example, the above-mentioned reinforcing support member 40 can adopt a threaded tube, the inner hole of the threaded tube has an internal thread that matches the subframe fastener, thereby reducing the manufacturing cost of the reinforcing support member 40; in addition, in order to improve the connection reliability of the reinforcing support member 40, a welding flange is provided at a portion of its outer periphery close to one end, and the welding flange is located inside the force transmission chamber 200 and is abutted against and welded to the torque box body 10. At the same time, in order to facilitate the assembly of the reinforcing support member 40 in the force transmission chamber 200, the other end of the reinforcing support member 40 can pass through the reinforcing beam 20 and extend out of the force transmission chamber 200 (during assembly, the reinforcing support member 40 is first welded to the torque box body 10, and then the reinforcing beam 20 is buckled and then the reinforcing support member 40 and the reinforcing beam 20 are welded and fixed), and a circle of weld is formed around its protruding portion, thereby achieving reliable fixation of the reinforcing support member 40 and the reinforcing beam 20.

[0035] In some embodiments, such as Figure 1 and Figure 4As shown, two reinforcing beams 20 are arranged in the force transmission main cavity 100 along the width direction of the vehicle body at intervals, and the two reinforcing beams 20 respectively form a force transmission sub-cavity 200 with the torsion box body 10, one of the force transmission sub-cavities 200 is aligned with the front section 50 of the cabin longitudinal beam along the front-to-back direction of the vehicle body, and at least one reinforcing support member 40 is provided in each force transmission sub-cavity 200. Considering that the cavity space of the force transmission sub-cavity 200 should not be too large, otherwise it is not conducive to the rigidity improvement effect of the torsion box body 10, two reinforcing beams 20 are provided in the force transmission main cavity 100, and each reinforcing beam 20 can form a force transmission sub-cavity 200 extending forward and backward and having a moderate width after being fixed to the torsion box body 10, and at the same time, a reinforcing support body is provided in each force transmission sub-cavity 200 to further improve the strength, which can not only meet the number requirements of the sub-frame mounting points, but also improve the overall structural rigidity and torsion resistance of the force transmission main cavity 100.

[0036] Specifically, in this embodiment, the surface of the torsion box body 10 has a convex or concave reinforcing rib 102, and the lower end of each reinforcing support member 40 is connected to the reinforcing rib 102. Since the lower end of the reinforcing support member 40, as the sub-frame mounting point, needs to bear the exciting force transmitted from the sub-frame, the reinforcing rib 102 is provided on the surface of the torsion box body 10 to improve the structural strength of the sub-frame mounting point area, thereby preventing the torsion box body 10 from being torsionally deformed by the exciting force of the sub-frame, which is beneficial to improving the torsion resistance of the overall structure.

[0037] Figure 3 It represents a specific structure and connection method of the above-mentioned reinforcing beam 20. The reinforcing beam 20 is bent on both sides along the width direction of the vehicle body to form support parts 21. The part of the reinforcing beam 20 located between the support parts 21 on both sides forms a main body 22. The front and rear ends of the main body 22 and the edges of the support parts 21 away from the main body 22 have overlapping edges 23, and each overlapping edge 23 is overlapped and fixed to the surface of the torque box body 10.

[0038] The two support parts 21 and the main body 22 form a groove body extending along the front and rear directions of the vehicle body. After the two support parts 21 are connected to the torque box body 10, the cover body is closed to form a force transmission chamber 200. Considering the connection stability between the reinforcing beam 20 and the torque box body 10, overlapping edges 23 are provided on the upper edges of the two support parts 21 and the front and rear ends of the main body 22. The overlapping edges 23 are overlapped with the surface of the torque box body 10 to increase the connection contact area between the reinforcing beam 20 and the torque box body 10. This can not only improve the connection stability, but also avoid excessive concentration of stress transmitted from the reinforcing beam 20 to the torque box body 10, thereby improving the overall force transmission effect.

[0039] As a specific implementation of the torque box body 10, please refer to Figure 2 and Figure 3It is understood that the torque box body 10 forms a first flange 11, a second flange 12, a third flange 13, and a fourth flange 14 around the periphery of the total force transmission cavity 100; wherein the first flange 11 is overlapped and fixed with the rear section 60 of the cabin longitudinal beam, the second flange 12 is overlapped and fixed with the cabin reinforcement cross beam 70, the third flange 13 is overlapped and fixed with the front enclosure middle channel connecting plate 80, and the fourth flange 14 is overlapped and fixed with the front enclosure lower plate 90. By arranging each flange to overlap with the corresponding part, and then fixing the overlapped part by welding, screwing or riveting, it is preferred to adopt the method of welding and fixing after overlap, which can improve the connection reliability and avoid stress concentration on the one hand, and on the other hand, after each flange is overlapped and fixed with the corresponding part, the total force transmission cavity 100 can be formed into a closed cavity, which is conducive to improving the structural rigidity and torsional resistance of the torque box body 10.

[0040] It should be understood that, in this embodiment, one end of the second flange 12 is bent and extended forward to form a connecting section 121, and the connecting section 121 is connected to the front end of the first flange 11 through a vertical joint surface 15 as a whole, and the vertical joint surface 15 is fixed to the side wall of the cabin longitudinal beam rear section 60. Since there is a height difference between the cabin longitudinal beam rear section 60 and the cabin reinforcement beam 70, there is an upper and lower surface difference between the first flange 11 and the second flange 12. Here, the connecting section 121 bent and extended from the front end of the first flange 11 and the second flange 12 is connected up and down as a whole by using a vertical structural surface, which can not only improve the structural integrity of the torque box body 10, but also improve the connection strength between the torque box body 10 and the cabin longitudinal beam rear section 60 by using the vertical joint surface 15 to fit and fix the side wall of the cabin longitudinal beam rear section 60, thereby improving the force transmission performance.

[0041] In addition, the fully extended connecting section 121 of the second flange 12 is connected to the front end of the first flange 11 to form a whole, which can form a stable triangular structure at the front of the total force transmission cavity 100, thereby improving the overall structural strength and torsional resistance of the torque box body 10.

[0042] Based on the same inventive concept, Figures 1 to 4 It is understood that an embodiment of the present application also provides a vehicle, including the above-mentioned torque box.

[0043] Compared with the prior art, the vehicle provided by the utility model adopts the above-mentioned torsion box, and a reinforcing beam 20 is arranged in the total force transmission cavity 100 surrounded by the torsion box body 10 and the vehicle body to form a force transmission sub-cavity 200, which can not only establish a direct force transmission channel in the front and rear directions of the vehicle body to improve the force transmission effect, but also improve the overall stiffness of the total force transmission cavity 100, thereby improving the torsional properties of the vehicle body. At the same time, the total force transmission cavity 100 also has a force transmission function along the width direction of the vehicle body, which helps to improve the side collision performance of the vehicle body; therefore, by arranging a reinforcing beam 20 in the total force transmission cavity 100 to form a force transmission sub-cavity 200, not only the overall torsional performance of the vehicle body can be improved, but also the collision force transmission performance of the vehicle body can be improved, thereby promoting the improvement of the performance of the entire vehicle.

[0044] 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 and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Torque box, characterized in that: The invention comprises a torque box body (10) connected to a vehicle body, and a reinforcing beam (20) connected to the torque box body (10); a total force transmission cavity (100) is formed between the torque box body (10) and the vehicle body; the reinforcing beam (20) is located in the total force transmission cavity (100), and a force transmission sub-cavity (200) is formed in the total force transmission cavity (100); wherein at least a part of the cavity of the force transmission sub-cavity (200) is aligned with a front section (50) of a cabin longitudinal beam along the front-rear direction of the vehicle body.

2. The torque box according to claim 1, characterized in that: The torsion box further comprises a reinforcing plate (30), wherein the reinforcing plate (30) is adhered and fixed to the surface of the torsion box body (10) in a conformal manner, and the reinforcing beam (20) is fixedly connected to the reinforcing plate (30).

3. The torque box according to claim 1, characterized in that: A reinforcing support member (40) is arranged in the force transmission chamber (200) along the up-down direction, the upper end of the reinforcing support member (40) is fixedly connected to the reinforcing beam (20), and the lower end is fixedly connected to the torsion box body (10) to form a sub-frame mounting point.

4. The torque box according to claim 3, characterized in that: The lower end of the reinforcing support member (40) is provided with a connection hole (41) extending upward, and the connection hole (41) is used to connect to a sub-frame fastener, and the torque box body (10) is provided with an avoidance hole (101) for avoiding the sub-frame fastener.

5. The torque box according to claim 3, characterized in that: Two reinforcing beams (20) are spaced apart in the force transmission main cavity (100) along the width direction of the vehicle body, and the two reinforcing beams (20) respectively form a force transmission sub-cavity (200) with the torque box body (10), one of the force transmission sub-cavities (200) is aligned with the front section (50) of the cabin longitudinal beam along the front-rear direction of the vehicle body, and at least one reinforcing support member (40) is provided in each of the force transmission sub-cavities (200).

6. The torque box according to claim 5, characterized in that: The surface of the torque box body (10) has raised or recessed reinforcing ribs (102), and the lower ends of the reinforcing support members (40) are connected to the reinforcing ribs (102).

7. The torque box according to claim 1, characterized in that: The reinforcing beam (20) is bent at both sides along the width direction of the vehicle body to form support portions (21), and the portion of the reinforcing beam (20) located between the support portions (21) on both sides thereof forms a main body portion (22). The front and rear ends of the main body portion (22) and the edges of the support portions (21) away from the main body portion (22) are provided with overlapping edges (23), and each of the overlapping edges (23) is overlapped and fixed to the surface of the torque box body (10).

8. The torque box according to any one of claims 1 to 7, characterized in that: The torque box body (10) is surrounded by the periphery of the force transmission cavity (100) to form a first flange (11), a second flange (12), a third flange (13), and a fourth flange (14); wherein the first flange (11) is overlapped and fixed to the rear section of the cabin longitudinal beam (60), the second flange (12) is overlapped and fixed to the cabin reinforcement cross beam (70), the third flange (13) is overlapped and fixed to the front enclosure middle channel connecting plate (80), and the fourth flange (14) is overlapped and fixed to the front enclosure lower plate (90).

9. The torque box according to claim 8, characterized in that: One end of the second flange (12) is bent and extended forward to form a connecting section (121), and the connecting section (121) is connected to the front end of the first flange (11) through a vertical connecting surface (15) as a whole, and the vertical connecting surface (15) is fitted and fixed to the side wall of the rear section (60) of the cabin longitudinal beam.

10. A vehicle, characterized in that Comprising a torsion box as described in any one of claims 1-9.

Images