Vehicle body longitudinal beam, vehicle body structure and vehicle

Abstract

The utility model discloses a vehicle body longitudinal beam, a vehicle body structure and a vehicle, the vehicle body longitudinal beam comprises a longitudinal beam main body which extends along the length direction of a vehicle body; the reinforcing piece is connected with the longitudinal beam main body, the reinforcing piece is provided with at least one first reinforcing part and at least one second reinforcing part, one of the first reinforcing part and the second reinforcing part is arranged above the longitudinal beam main body, and the other one of the first reinforcing part and the second reinforcing part is arranged below the longitudinal beam main body. According to the vehicle body longitudinal beam, the anti-bending capacity of the vehicle body longitudinal beam in the height direction is improved through the reinforcing piece, so that the structural deformation of the vehicle body longitudinal beam is small in the vehicle collision process, the invasion amount of the vehicle body longitudinal beam into a passenger compartment can be reduced, the safety of passengers can be protected, the structural damage is small, and the maintenance cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of vehicle manufacturing technology, and in particular to a vehicle body longitudinal beam, a vehicle body structure having the longitudinal beam, and a vehicle having the vehicle body structure. Background Technology

[0002] The longitudinal beams of a car body are an important structure with high requirements for structural strength, stiffness, and modal characteristics to cope with vehicle collisions. In the existing body structure, the longitudinal beams are prone to bending and damage when the vehicle is hit by a collision, resulting in a high safety risk to the occupants. There is room for improvement. Utility Model Content

[0003] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, this utility model proposes a vehicle body longitudinal beam that improves the bending resistance in the height direction of the longitudinal beam through reinforcement. The longitudinal beam exhibits minimal structural deformation during a vehicle collision, thereby reducing the intrusion of the longitudinal beam into the passenger compartment and protecting the safety of the occupants.

[0004] According to an embodiment of the present utility model, a vehicle longitudinal beam includes: a longitudinal beam body extending along the length direction of the vehicle body; and a reinforcing member connected to the longitudinal beam body. The reinforcing member is provided with at least one first reinforcing part and at least one second reinforcing part, one of which is located above the longitudinal beam body and the other is located below the longitudinal beam body.

[0005] According to the embodiment of the present utility model, the vehicle longitudinal beam can enhance its structural strength in the height direction by providing a first reinforcing part and a second reinforcing part on the upper and lower sides of the main body of the longitudinal beam, thereby improving the bending resistance of the vehicle longitudinal beam in the height direction. After the vehicle is hit by a collision, the strength of the vehicle longitudinal beam can be strengthened by the first reinforcing part and the second reinforcing part, reducing structural deformation and other structural damage at the vehicle longitudinal beam, thereby reducing the intrusion of the vehicle longitudinal beam into the passenger compartment and protecting the safety of the occupants.

[0006] According to some embodiments of the present invention, in the vehicle body longitudinal beam, the first reinforcing part is configured as a first reinforcing member, and the second reinforcing part is configured as a second reinforcing member. Both the first reinforcing member and the second reinforcing member are connected to the longitudinal beam body. One of the first reinforcing member and the second reinforcing member is disposed above the longitudinal beam body, and the other is disposed below the longitudinal beam body.

[0007] According to some embodiments of the present invention, in the vehicle body longitudinal beam, the first reinforcing member is disposed above the longitudinal beam body, the front end of the first reinforcing member is connected to the rear end of the longitudinal beam body, and the rear end of the first reinforcing member is adapted to be connected to the rear panel.

[0008] According to some embodiments of the present invention, in the vehicle longitudinal beam, the first reinforcing member includes a main body plate and a rear side plate. The main body plate is connected to the upper part of the longitudinal beam body, the rear side plate is connected to the rear end of the main body plate and extends upward relative to the main body plate, and the rear side plate is connected to the rear bulkhead.

[0009] According to some embodiments of the present invention, a reinforcing boss is formed at the connection between the rear side panel and the main body panel of the vehicle body longitudinal beam, and the reinforcing boss protrudes upward.

[0010] According to some embodiments of the present invention, in the vehicle body longitudinal beam, the second reinforcing member is disposed below the main body of the longitudinal beam, the front end of the second reinforcing member is connected to the main body of the longitudinal beam, and the rear end of the second reinforcing member is adapted to be connected to the rear panel.

[0011] According to some embodiments of the present invention, in the vehicle body longitudinal beam, the second reinforcing member includes a support portion and a connecting flange, the support portion being connected to the main body of the longitudinal beam, and the connecting flange being adapted to be connected to the rear panel.

[0012] According to some embodiments of the present invention, the vehicle body longitudinal beam has a support groove formed in the support part, at least a portion of the main body of the longitudinal beam is accommodated in the support groove, and the connecting flange is connected to the rear end of the support part and connected to the front side of the rear panel.

[0013] According to some embodiments of the present invention, the vehicle longitudinal beam includes a support portion comprising a support bottom wall and at least one support side wall, wherein the support bottom wall and at least one support side wall together define the support groove.

[0014] According to some embodiments of the present invention, the vehicle body longitudinal beam has two supporting sidewalls, which are distributed opposite to each other and respectively connected to both sides of the supporting bottom wall to jointly define the supporting groove. The connecting flange is connected to the supporting bottom wall and the supporting sidewall.

[0015] According to some embodiments of the present invention, in the vehicle body longitudinal beam, the first reinforcing part is configured as a third reinforcing member, which is disposed above the longitudinal beam body and connected to the longitudinal beam body.

[0016] According to some embodiments of the present invention, the longitudinal beam of the vehicle body has an upwardly open longitudinal beam groove, and the third reinforcing member is installed in the longitudinal beam groove.

[0017] According to some embodiments of the present invention, in the vehicle body longitudinal beam, the third reinforcing member is located in the longitudinal beam groove and is disposed between the first reinforcing member and the longitudinal beam body.

[0018] According to some embodiments of the present invention, the third reinforcing member of the vehicle body longitudinal beam includes a reinforcing member base plate and a reinforcing member side plate. There are two reinforcing member side plates, which are respectively connected to both sides of the reinforcing member base plate to jointly define a reinforcing groove. The reinforcing member base plate and the reinforcing member side plates are respectively connected to the inner wall of the longitudinal beam groove.

[0019] According to some embodiments of the present invention, the vehicle body longitudinal beam further includes a fourth reinforcing member, which is installed in the longitudinal beam groove, and the rear end of the fourth reinforcing member is connected to the front end of the third reinforcing member.

[0020] According to some embodiments of the present invention, the vehicle body longitudinal beam further includes a fifth reinforcing member, which is installed in the longitudinal beam groove and is located in front of the fourth reinforcing member.

[0021] This utility model also proposes a vehicle body structure.

[0022] The vehicle body structure according to the present utility model includes a vehicle body longitudinal beam as described in any of the above embodiments. The vehicle body longitudinal beam is provided as two beams, and the two vehicle body longitudinal beams are spaced apart along the vehicle width direction. A rear crossbeam is connected between the main bodies of the two vehicle body longitudinal beams.

[0023] According to some embodiments of the present invention, the vehicle body structure also includes a connector, one end of which is connected to the rear crossbeam and the other end of which is adapted to be connected to the rear bulkhead.

[0024] According to some embodiments of the present invention, the vehicle body structure includes two connectors, which are spaced apart along the width direction of the vehicle.

[0025] According to some embodiments of the present invention, the rear crossbeam is equipped with a sixth reinforcing member, and the front end of the connecting member is connected to the sixth reinforcing member.

[0026] According to some embodiments of the present invention, the sixth reinforcing member is provided with at least one reinforcing boss in the vehicle body structure.

[0027] According to some embodiments of the present invention, the vehicle body structure also includes a rear anti-collision beam, which is detachably connected to the rear end of the longitudinal beam body.

[0028] According to some embodiments of the present invention, the rear anti-collision beam is constructed as a trailer hook beam structure, and the trailer hook beam structure is detachably connected to the rear end of the longitudinal beam body.

[0029] According to some embodiments of the present utility model, the trailer hook beam structure is provided with a connector, which is inserted into the longitudinal beam groove of the longitudinal beam body, and the connector is detachably connected to the longitudinal beam body.

[0030] This utility model also proposes a vehicle.

[0031] The vehicle according to the present invention includes the body longitudinal beams as described in any of the above embodiments and / or the body structure as described in any of the above embodiments.

[0032] The vehicle described above has the same advantages over existing technologies as the aforementioned body structure and longitudinal beams, and will not be repeated here.

[0033] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0034] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0035] Figure 1 This is a schematic diagram of the vehicle body structure according to an embodiment of the present utility model. Figure 1 ;

[0036] Figure 2 This is a schematic diagram of the vehicle body structure according to an embodiment of the present utility model. Figure 2 ;

[0037] Figure 3 This is a structural schematic diagram of the rear panel and connecting parts of the vehicle body structure according to an embodiment of the present utility model;

[0038] Figure 4 This is a structural schematic diagram of the rear anti-collision beam of the vehicle body structure according to an embodiment of the present utility model;

[0039] Figure 5 This is a partial schematic diagram of the first reinforcing member, rear floor, and rear anti-collision beam of the vehicle body structure according to an embodiment of the present utility model;

[0040] Figure 6 This is an assembly relationship diagram of the vehicle body longitudinal beam, the third reinforcing member, and the second reinforcing member according to an embodiment of the present utility model.

[0041] Figure 7 This is a structural schematic diagram of the third reinforcing member of the vehicle body structure according to an embodiment of the present utility model;

[0042] Figure 8 This is a structural schematic diagram of the third and fourth reinforcing members of the vehicle body structure according to an embodiment of the present utility model;

[0043] Figure 9This is a structural schematic diagram of the fifth reinforcing member of the vehicle body structure according to an embodiment of the present utility model;

[0044] Figure 10 This is a structural schematic diagram of the second reinforcing member of the vehicle body structure according to an embodiment of the present utility model;

[0045] Figure 11 This is a structural schematic diagram of the connecting parts of the vehicle body structure according to an embodiment of the present utility model;

[0046] Figure 12 This is a structural schematic diagram of the sixth reinforcing member of the vehicle body structure according to an embodiment of the present utility model;

[0047] Figure 13 This is a schematic diagram of the trailer hook beam structure of the vehicle body structure according to an embodiment of the present utility model;

[0048] Figure 14 This is a schematic diagram of the installation of the trailer hook beam structure of the vehicle body structure according to an embodiment of the present utility model. Figure 1 ;

[0049] Figure 15 This is a schematic diagram of the installation of the trailer hook beam structure of the vehicle body structure according to an embodiment of the present utility model. Figure 2 .

[0050] Figure label:

[0051] Body structure 1000, body longitudinal beam 100.

[0052] Longitudinal beam body 1, longitudinal beam groove 11,

[0053] Rear bumper beam 2, bumper beam connecting flange 211, trailer hook beam structure 22, trailer hook beam connecting flange 221, connector 222.

[0054] First reinforcing member 3, main body plate 31, rear side plate 32, first reinforcing boss 33

[0055] Third reinforcing component 4, base plate 41, side plate 42.

[0056] Second reinforcing member 5, support part 51, support groove 511, support bottom wall 512, support side wall 513, connecting flange 52, support boss 53

[0057] Fourth reinforcing member 6, side flange 61 of the fourth reinforcing member, bottom wall 62 of the fourth reinforcing member, reinforcing rib 621, front positioning flange 63, rear positioning flange 64.

[0058] Fifth reinforcing member 7, bottom wall 71 of the fifth reinforcing member, side flange 72 of the fifth reinforcing member,

[0059] Rear panel 8, rear crossbeam 9, connector 91, rear flange 911, front flange 912, side flange 913, boss structure 914, sixth reinforcing member 92, front side 921, rear side 922, second reinforcing boss 923, top edge of the sixth reinforcing member 924, rear floor 10. Detailed Implementation

[0060] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0061] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0062] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0063] Unless otherwise specified, the front-back direction in this application refers to the longitudinal direction of the vehicle, i.e., the X direction; the left-right direction refers to the lateral direction of the vehicle, i.e., the Y direction; and the up-down direction refers to the vertical direction of the vehicle, i.e., the Z direction.

[0064] The following is for reference. Figures 1-15According to an embodiment of the present invention, the longitudinal beam 100 of the vehicle body is enhanced in the height direction by providing a first reinforcing part and a second reinforcing part on the upper and lower sides of the main body 1 of the longitudinal beam, thereby improving the bending resistance of the longitudinal beam 100 in the height direction. After the vehicle is hit by a collision, the strength of the longitudinal beam 100 is strengthened by the first reinforcing part and the second reinforcing part, reducing the structural deformation and other structural damage at the longitudinal beam 100, thereby reducing the intrusion of the longitudinal beam 100 into the passenger compartment and protecting the safety of the occupants.

[0065] like Figures 1-15 As shown, a vehicle body longitudinal beam 100 according to an embodiment of the present utility model includes: a longitudinal beam body 1 and a reinforcing member.

[0066] The main body of the longitudinal beam 1 extends along the length of the vehicle body, and the reinforcing member is connected to the main body of the longitudinal beam 1.

[0067] Specifically, the longitudinal beam 100 is a crucial structure of the vehicle body, forming part of the frame, and is used to support the weight of the vehicle. The longitudinal beam 100 includes a main body 1, which extends along the length of the vehicle body, i.e., the longitudinal direction of the vehicle's front-to-back. This front-to-back extension of the main body 1 allows it to support the vehicle body in the front-to-back direction, effectively bearing the load and improving the structural strength of the vehicle body. In the event of a rear-end collision, the impact force can be transmitted along the longitudinal beam 100, thus dispersing and buffering the impact force.

[0068] Furthermore, the reinforcing member is connected to the main body 1 of the longitudinal beam to enhance the structural strength of the main body 1 of the longitudinal beam. The reinforcing member can be welded to the main body 1 of the longitudinal beam as a whole, or it can be detachably connected by bolts or other connecting members.

[0069] The reinforcing member is provided with at least one first reinforcing part and at least one second reinforcing part, one of which is located above the longitudinal beam body 1 and the other is located below the longitudinal beam body 1.

[0070] In other words, by setting the first or second reinforcing part above the longitudinal beam body 1, the structural strength of the upper part of the longitudinal beam body 1 can be increased, and by setting the first or second reinforcing part below the longitudinal beam body 1, the structural strength of the lower part of the longitudinal beam body 1 can be increased. Both can enhance the overall structural strength of the longitudinal beam body 1, thereby improving the bending resistance of the longitudinal beam body 1.

[0071] Specifically, the first reinforcing part can be located above the longitudinal beam body 1, and the second reinforcing part can be located below the longitudinal beam body 1; alternatively, the second reinforcing part can be located above the longitudinal beam body 1, and the first reinforcing part can be located below the longitudinal beam body 1. Both of these arrangements allow for the reinforcement to be arranged on the longitudinal beam body 1. Different arrangements can increase the structural strength of the longitudinal beam body 1, and the arrangement methods are diverse and can be flexibly selected. The first and second reinforcing parts can be one, two, three, etc.

[0072] Furthermore, the first and second reinforcing parts are respectively disposed on the upper and lower sides of the longitudinal beam body 1, which can improve the bending resistance of the vehicle body longitudinal beam 100 in the height direction. Thus, when the vehicle is subjected to a collision, the first and second reinforcing parts can effectively enhance the structural strength of the longitudinal beam body 1, reducing the impact bending deformation of the vehicle body longitudinal beam 100. For example, Figure 5 As shown, a rear floor 10 is also laid above the longitudinal beam 100 of the vehicle body. The rear floor 10 is connected to the first or second reinforcing part. The rear floor 10 has weaker structural strength than the longitudinal beam 100 of the vehicle body and is more prone to deformation under stress. The amount of deformation of the rear floor 10 at this location can be significantly reduced by the reinforcing parts, thereby reducing important structural damage to the vehicle and improving its economic maintainability.

[0073] The collisions experienced by the vehicle include low-speed collisions and high-speed collisions. The impact energy of low-speed collisions and high-speed collisions on the vehicle is different. When the vehicle is subjected to these two different collisions, both the first reinforcing part and the second reinforcing part can strengthen the longitudinal beam body 1 to reduce structural damage to the longitudinal beam body 1.

[0074] Furthermore, both the first and second reinforcing parts can be connected to the main body of the longitudinal beam 1, or one of the first and second reinforcing parts can be connected to the rear floor 10 and other structures. They can be detachably connected by bolts or other connectors, or they can be connected by welding or other methods.

[0075] The reinforcing member can be a single component fitted onto the longitudinal beam body 1. This reinforcing member has a first reinforcing portion and a second reinforcing portion, one of which is positioned above the longitudinal beam body 1, and the other below. Alternatively, the reinforcing member can consist of two reinforcing members distributed horizontally and fastened together, forming a first reinforcing portion and a second reinforcing portion. One of these portions is positioned above the longitudinal beam body 1, and the other below.

[0076] Furthermore, the reinforcements provided in the above-mentioned different ways can all enhance the strength of the longitudinal beam body 1. The reinforcements can be set at the rear end of the longitudinal beam body 1 to enhance the bending resistance of the rear end of the longitudinal beam body 1, so as to cope with the rear collision of the vehicle and reduce the intrusion of the longitudinal beam 100 into the passenger compartment. The reinforcements can also be set at the front end of the longitudinal beam body 1 to enhance the bending resistance of the front end of the longitudinal beam body 1, so as to cope with the front collision of the vehicle and reduce the intrusion of the longitudinal beam 100 into the passenger compartment. Thus, the damage to the vehicle structure can be reduced in more working conditions to protect the safety of the occupants.

[0077] According to the embodiment of the present utility model, the longitudinal beam 100 of the vehicle body can enhance its structural strength in the height direction by providing a first reinforcing part and a second reinforcing part on the upper and lower sides of the main body 1 of the longitudinal beam, thereby improving the bending resistance of the longitudinal beam 100 in the height direction. After the vehicle is hit by a collision, the strength of the longitudinal beam 100 can be strengthened by the first reinforcing part and the second reinforcing part, reducing the structural deformation and other structural damage at the longitudinal beam 100, thereby reducing the intrusion of the longitudinal beam 100 into the passenger compartment, protecting the safety of the occupants. Moreover, the longitudinal beam 100 suffers less structural damage during the vehicle collision process, reducing maintenance costs, and has a simple structure and low installation cost.

[0078] In some embodiments, the first reinforcing part is configured as a first reinforcing member 3, and the second reinforcing part is configured as a second reinforcing member 5. Both the first reinforcing member 3 and the second reinforcing member 5 are connected to the longitudinal beam body 1. One of the first reinforcing member 3 and the second reinforcing member 5 is disposed above the longitudinal beam body 1, and the other is disposed below the longitudinal beam body 1.

[0079] In other words, the first reinforcing member 3 can be positioned above the main body 1 of the longitudinal beam, and the second reinforcing member 5 can be positioned below the main body 1 of the longitudinal beam. Alternatively, the second reinforcing member 5 can be positioned above the main body 1 of the longitudinal beam, and the first reinforcing member 3 can be positioned below the main body 1 of the longitudinal beam. Both of these arrangements can achieve the arrangement of the reinforcing members on the main body 1 of the longitudinal beam. Different arrangements can increase the structural strength of the main body 1 of the longitudinal beam. There are various arrangements, and the options can be selected flexibly.

[0080] Furthermore, the first reinforcing member 3 and the second reinforcing member 5 are both connected to the upper or lower side of the longitudinal beam body 1, so as to support the upper or lower side of the longitudinal beam body 1 through the first reinforcing member 3 and the second reinforcing member 5, thereby improving the structural strength of the longitudinal beam body 1 and thus improving the impact resistance of the longitudinal beam body 1 in the height direction. After the vehicle is hit by a collision, the bending deformation of the frame longitudinal beam is reduced, thereby reducing structural damage and reducing maintenance costs.

[0081] In some embodiments, the first reinforcing member 3 is disposed above the longitudinal beam body 1, the front end of the first reinforcing member 3 is connected to the rear end of the longitudinal beam body 1, and the rear end of the first reinforcing member 3 is adapted to be connected to the rear panel 8.

[0082] Specifically, the first reinforcing member 3 is located above the longitudinal beam body 1, providing support and reinforcement to the upper area of ​​the longitudinal beam body 1, thereby improving the strength of the upper structure of the longitudinal beam body 1. Furthermore, the first reinforcing member 3 connects the longitudinal beam body 1 and the rear panel 8, which is located on the rear side of the vehicle body longitudinal beam 100. Figure 1 As shown, the front end of the first reinforcing member 3 is connected to the rear end of the longitudinal beam body 1, and the rear end is connected to the rear panel 8, so as to provide mutual support between the rear end of the longitudinal beam body 1 and the rear panel 8. The longitudinal beam body 1 and the rear panel 8 are connected in the front-rear direction. The first reinforcing member 3 can improve the connection strength between the longitudinal beam body 1 and the rear panel 8, so that the first reinforcing member 3 can bear part of the force between them.

[0083] In this way, when the rear of the vehicle is subjected to a low-speed or high-speed collision, the strength of the longitudinal beam body 1 is increased by the first reinforcing member 3, which can significantly reduce the deformation of the longitudinal beam body 1 and the rear panel 8, reduce important structural damage to the vehicle, and improve its economic maintainability.

[0084] In some embodiments, the first reinforcing member 3 includes a main body plate portion 31 and a rear side plate portion 32. The main body plate portion 31 is connected to the upper part of the longitudinal beam body 1, and the rear side plate portion 32 is connected to the rear end of the main body plate portion 31 and extends upward relative to the main body plate portion 31. The rear side plate portion 32 is connected to the rear enclosure plate 8.

[0085] Specifically, the main body plate 31 is located above the longitudinal beam body 1 and is connected to the longitudinal beam body 1, and the rear side plate 32 is located on the front side of the rear panel 8 and is connected to the rear panel 8. The rear side plate 32 is connected to the rear side of the main body plate 31 and bends upward to connect with the front side of the rear panel 8. The connection position of the rear side plate 32 in the rear panel 8 is higher than the connection position of the main body plate 31 in the longitudinal beam body 1. In this way, it can form a supporting effect above the longitudinal beam body 1 and the front side of the rear panel 8, which can enhance the connection strength between the longitudinal beam body 1 and the rear panel 8, avoid large deformation of the rear panel 8 and the longitudinal beam body 1 due to excessive upper stress, and reduce structural damage.

[0086] Among them, such as Figure 5 As shown, the first reinforcing member 3 can be constructed as an L-shaped plate. The main plate portion 31 is used for welding and connection with the rear floor 10 above the longitudinal beam main body 1, and the rear side plate portion 32 is bolted to the rear panel 8. The connection method is simple and the connection is reliable. Moreover, the first reinforcing member 3 can be manufactured by sheet metal bending and other methods.

[0087] It should also be noted that when the overlap area between the main body panel 31 and the rear floor 10 is large, weight-reducing holes can be opened in the main body panel 31 to achieve the purpose of weight reduction while meeting performance requirements. Furthermore, the first reinforcing member 3, the rear floor 10, and the vehicle longitudinal beam 100 are connected by welding to form a three-layer weld, which improves the connection strength of the three components.

[0088] In some embodiments, a first reinforcing boss 33 is formed at the connection between the rear side panel portion 32 and the main body panel portion 31, and the first reinforcing boss 33 is provided to protrude upward.

[0089] Specifically, by providing a first reinforcing boss 33 at the connection between the rear side plate 32 and the main body plate 31, the connection between the two can be supported and strengthened, thereby improving the structural strength of the connection between the rear side plate 32 and the main body plate 31. Its own high structural strength is more conducive to enhancing the structural reinforcement of the longitudinal beam main body 1 and the rear panel 8 by the first reinforcing member 3, so as to effectively improve the bending resistance of the longitudinal beam main body 1.

[0090] Furthermore, the first reinforcing boss 33 protrudes upward at the connection between the rear side plate 32 and the main body plate 31, which can enhance the connection strength between the two from the top. The first reinforcing boss 33 can be constructed as an inclined structure, which further strengthens its reinforcing effect. The upward protrusion also increases the upper contact surface between the main body plate 31 and the longitudinal beam body 1, improving the connection strength. The size of the first reinforcing boss 33 can be appropriately increased to enlarge the inclined surface area according to actual conditions, thereby increasing its support capacity and further reducing damage to the rear floor 10 in low-speed collisions.

[0091] In some embodiments, the second reinforcing member 5 is disposed below the longitudinal beam body 1, the front end of the second reinforcing member 5 is connected to the longitudinal beam body 1, and the rear end of the second reinforcing member 5 is adapted to be connected to the rear panel 8.

[0092] Specifically, such as Figure 1 , Figure 2 and Figure 6 As shown, the second reinforcing member 5 is located below the longitudinal beam body 1, providing support to the bottom of the longitudinal beam body 1. The front end of the second reinforcing member 5 is connected to the longitudinal beam body 1, and the rear end is connected to the rear panel 8. This creates a supporting effect between the longitudinal beam body 1 and the lower front area of ​​the rear panel 8, enhancing the connection strength between the longitudinal beam body 1 and the rear panel 8. This prevents significant deformation of the rear panel 8 and the longitudinal beam body 1 due to excessive lower stress, reducing structural damage. Furthermore, the second reinforcing member 5 is an inclined structure and is located at the bottom of the vehicle longitudinal beam 100, which improves the structural strength at the connection between the vehicle longitudinal beam 100 and the rear panel 8 without interfering with other structures or affecting the rear structural arrangement of the vehicle longitudinal beam 100.

[0093] Furthermore, after the rear of the vehicle is subjected to a low-speed or high-speed collision, the second reinforcing member 5 provides a certain support to the rear of the vehicle body longitudinal beam 100. This allows a portion of the collision force from the rear side of the rear panel 8 to be transferred to the vehicle body longitudinal beam 100 via the second reinforcing member 5, and a portion of the collision force to be directly transferred to the vehicle body longitudinal beam 100 along the longitudinal direction. Additionally, a portion of the collision force is transferred through the first reinforcing member 3. This allows for the dispersion of collision energy through multiple paths, thereby reducing damage to the vehicle body longitudinal beam 100 and other surrounding structures.

[0094] Therefore, by setting the second reinforcing member 5, a force transmission path can be provided between the vehicle longitudinal beam 100 and the rear panel 8. Combined with the first reinforcing member 3 mentioned above, an upper and lower reinforcing structure can be formed at the rear end of the vehicle longitudinal beam 100. This can distribute the load at the rear panel 8 more evenly to the vehicle longitudinal beam 100, effectively reduce the deformation of the rear part of the vehicle longitudinal beam 100 and the rear floor 10, improve the stiffness of the vehicle longitudinal beam 100 during a collision, significantly improve economic maintainability, and enhance the vehicle's collision performance.

[0095] In some embodiments, the second reinforcing member 5 includes a support portion 51 and a connecting flange 52, the support portion 51 being connected to the longitudinal beam body 1, and the connecting flange 52 being adapted to be connected to the rear panel 8.

[0096] Specifically, the support part 51 is connected to the connecting flange 52. The support part 51 is connected to the longitudinal beam body 1 to support the bottom of the longitudinal beam body 1. The connecting flange 52 is connected to the rear panel 8 to support the connection between the support part 51 and the rear panel 8. This enables the second reinforcing member 5 to support the connection between the longitudinal beam body 1 and the rear panel 8, forming a force transmission path between them. This effectively prevents the rear panel 8 and the longitudinal beam body 1 from undergoing large deformations due to excessive lower force, thus reducing structural damage.

[0097] The inclusion of a support 51 and a connecting flange 52 allows the structure of the second reinforcing member 5 to better match the positional relationship between the longitudinal beam body 1 and the rear panel 8, and enables an effective connection, thereby improving the connection strength between them.

[0098] In some embodiments, the support portion 51 is formed with a support groove 511, at least a portion of the longitudinal beam body 1 is accommodated in the support groove 511, and the connecting flange 52 is connected to the rear end of the support portion 51 and connected to the front side of the rear panel 8.

[0099] Specifically, such as Figure 6 and Figure 10As shown, the support part 51 has a support groove 511. The groove depth of the support groove 511 can be set to be greater than or equal to half the height dimension of the longitudinal beam body 1. The support groove 511 is an open structure, with the support groove 511 opening upwards for supporting and cooperating with the longitudinal beam body 1. The support groove 511 is also constructed to open forwards, and the size of the support groove 511 is larger than the outer size of the longitudinal beam body 1. Thus, during installation, at least part of the support on the lower side of the longitudinal beam body 1 can be extended into the support groove 511 along the Z direction. The longitudinal beam body 1 and the support groove 511 can be welded together, making them a single unit and improving the connection strength between the support part 51 and the longitudinal beam body 1.

[0100] Furthermore, the connecting flange 52 is connected to the rear side of the support part 51, which allows the support part 51 to be connected to the front longitudinal beam body 1, and the connecting flange 52 to the rear side rear panel 8. The connecting flange 52 is used to provide a support connection between the support part 51 and the rear panel 8.

[0101] In some embodiments, the support portion 51 includes a support bottom wall 512 and at least one support side wall 513, the support bottom wall 512 and at least one support side wall 513 together defining a support groove 511.

[0102] Specifically, the supporting bottom wall 512 and at least one supporting side wall 513 are connected to define a supporting groove 511. The supporting groove 511 is open to the upper side opposite to the supporting bottom wall 512. During installation, at least a portion of the lower support of the longitudinal beam body 1 extends into the supporting groove 511 along the Z-direction, so that the bottom of the longitudinal beam body 1 supports the supporting bottom wall 512, and the side of the longitudinal beam body 1 is in contact with the supporting side wall 513. The two sides are welded together at the contact points, which improves the reliability of the connection. There can be one or two supporting side walls 513.

[0103] Therefore, by providing a support groove 511 in the second reinforcing member 5, the support side wall 513 can limit the longitudinal beam body 1, and the connection area between the second reinforcing member 5 and the longitudinal beam body 1 in the Z direction can be increased, thereby improving the connection strength between the two and thus improving the stability of force transmission between them.

[0104] Among them, such as Figure 10 As shown, the second reinforcing member 5 may be difficult to process due to issues such as the angle and width of the inclined surface. The structure can be improved in the future to reduce the processing difficulty. At the same time, carbon fiber material can be used without considering the cost, because this component significantly improves the economics of repairing rear low-speed collisions. If the material process and material are improved, both lightweight and economical repair can be achieved.

[0105] Furthermore, the second reinforcing member 5 has a large supporting boss 53, which can increase the strength of the second reinforcing member 5, thereby increasing the overall strength of the longitudinal beam body 1 and reducing the damage to the longitudinal beam body 1 caused by collision.

[0106] In some embodiments, two support sidewalls 513 are provided, which are distributed opposite to each other and connected to both sides of the support bottom wall 512 to jointly define the support groove 511. The connecting flange 52 is connected to the support bottom wall 512 and the support sidewalls 513.

[0107] Specifically, such as Figure 10 As shown, in this embodiment, there are two supporting sidewalls 513, which are spaced apart and distributed on both sides of the supporting bottom wall 512. The supporting bottom wall 512 and the supporting sidewalls 513 together define a supporting groove 511, which is used to embed the longitudinal beam body 1 into the supporting groove 511. The rear sides of the supporting bottom wall 512 and the supporting sidewalls 513 are connected to the connecting flange 52. The connecting flange 52 is bent downward so that it can be connected to the rear panel 8 in the lower area of ​​the longitudinal beam body 1. The connecting flange 52 and the rear panel 8 can be detachably connected by bolts or other connectors. The connection method is simple and easy to disassemble. When maintenance is required in the future, the connecting flange 52 can be directly removed from the rear panel 8.

[0108] Furthermore, the provision of two supporting sidewalls 513 makes the connection between the longitudinal beam body 1 and the second reinforcing member 5 more reliable, and its structure is simple and easy to process.

[0109] In some embodiments, the first reinforcing part is configured as a third reinforcing member 4, which is disposed above the longitudinal beam body 1 and connected to the longitudinal beam body 1.

[0110] Specifically, the third reinforcing member 4 is disposed above the longitudinal beam body 1, that is, the third reinforcing member 4 and the first reinforcing member 3 are both located above the longitudinal beam body 1. The third reinforcing member 4 is located on the lower side of the rear floor 10, that is, the third reinforcing member 4 is located on the lower side of the first reinforcing member 3. The third reinforcing member 4 and the longitudinal beam body 1 can be connected by welding, which can improve the connection strength between the two, thereby strengthening at least part of the rear structure of the longitudinal beam body 1 and improving the longitudinal load bearing capacity of the rear of the longitudinal beam body 1.

[0111] In this way, after the rear of the vehicle is subjected to a low-speed or high-speed collision, the third reinforcement 4 plays a good supporting role, which can reduce the amount of intrusion at the rear of the vehicle body longitudinal beam 100, thereby reducing the structural damage to the vehicle body longitudinal beam 100 and meeting the requirements of economic maintainability.

[0112] In some embodiments, the longitudinal beam body 1 is formed with an upwardly open longitudinal beam groove 11, and the third reinforcing member 4 is installed in the longitudinal beam groove 11.

[0113] Specifically, such as Figure 6 and Figure 7 As shown, the longitudinal beam body 1 has a longitudinal beam groove 11. The groove depth of the longitudinal beam groove 11 can be set to be greater than or equal to the size of the third reinforcing member 4. The longitudinal beam groove 11 is an open structure, with the longitudinal beam groove 11 opening upwards. The groove width of the longitudinal beam groove 11 is greater than the outer size of the third reinforcing member 4. In this way, the third reinforcing member 4 can be extended from the open side of the longitudinal beam groove 11 along the Z direction into the longitudinal beam groove 11. The connection between the two is welded together, which can improve the connection reliability between the third reinforcing member 4 and the inner wall of the longitudinal beam groove 11.

[0114] Therefore, by setting a longitudinal beam groove 11 in the longitudinal beam body 1, the third reinforcing member 4 can be completely built into the longitudinal beam groove 11. The third reinforcing member 4 supports the inner wall of the longitudinal beam body 1, and the connection area between the third reinforcing member 4 and the longitudinal beam body 1 in the Z and Y directions is larger, which can effectively improve the reinforcing effect of the third reinforcing member 4 on the structure of the longitudinal beam body 1, thereby improving the load bearing capacity of the longitudinal beam body 1.

[0115] In some embodiments, the third reinforcing member 4 is located in the longitudinal beam groove 11 and is disposed between the first reinforcing member 3 and the longitudinal beam body 1. The first reinforcing member 3 is connected to the rear end of the longitudinal beam body 1, and the third reinforcing member 4 extends forward relative to the first reinforcing member 3, i.e., the third reinforcing member 4 is disposed in front of the first reinforcing member 3. This allows for structural reinforcement of the longitudinal beam body 1 in front of the first reinforcing member 3. Furthermore, the third reinforcing member 4 extends a certain length in the longitudinal direction, reinforcing at least a portion of the rear structure of the longitudinal beam body 1 and improving the longitudinal load-bearing capacity of the rear of the longitudinal beam body 1. In the vertical direction, the third reinforcing member 4 is located within the longitudinal beam groove 11, between the first reinforcing member 3 and the longitudinal beam body 1, ensuring that the entire structure of the third reinforcing member 4 reinforces the longitudinal beam body 1, thereby improving the structural strength and force transmission stability of the vehicle body longitudinal beam 100.

[0116] In some embodiments, the third reinforcing member 4 includes a reinforcing member base plate 41 and a reinforcing member side plate 42. There are two reinforcing member side plates 42, which are respectively connected to both sides of the reinforcing member base plate 41 to jointly define the reinforcing groove. The reinforcing member base plate 41 and the reinforcing member side plate 42 are respectively connected to the inner wall of the longitudinal beam groove 11.

[0117] Specifically, such as Figure 6 and Figure 7As shown, the reinforcing base plate 41 is a flat plate for connecting with the longitudinal beam body 1. There are two reinforcing side plates 42, which are spaced apart and distributed on both sides of the reinforcing base plate 41. The reinforcing base plate 41 and the reinforcing side plates 42 together define the reinforcing groove. During installation, the third reinforcing member 4 is embedded in the longitudinal beam body 1, and the reinforcing base plate 41 is attached to the bottom wall of the longitudinal beam groove 11 of the longitudinal beam body 1. The two reinforcing side plates 42 are attached to the two side walls of the longitudinal beam body 1. After being attached, they can be connected by welding, which can improve the connection strength between the third reinforcing member 4 and the longitudinal beam body 1.

[0118] This design allows the third reinforcing member 4 to be more lightweight, meeting the requirements for lightweight design, and can effectively support each side wall of the longitudinal beam body 1, thereby improving the connection strength between the two.

[0119] Therefore, the two reinforcing side plates 42 can support each other with the two side walls of the longitudinal beam body 1, and can increase the connection area between the third reinforcing member 4 and the longitudinal beam body 1 in the Z direction, thereby improving the connection strength between the two and thus improving the stability of the force transmission of the longitudinal beam body 1.

[0120] In some embodiments, the vehicle body longitudinal beam 100 further includes a fourth reinforcing member 6, which is installed in the longitudinal beam groove 11, and the rear end of the fourth reinforcing member 6 is connected to the front end of the third reinforcing member 4.

[0121] Specifically, the fourth reinforcing member 6 is installed inside the longitudinal beam groove 11, which can support the inner wall of the longitudinal beam groove 11. The rear end of the fourth reinforcing member 6 is connected to the third reinforcing member 4, so that the two can extend in the length direction of the longitudinal beam groove 11 respectively. Both the fourth reinforcing member 6 and the third reinforcing member 4 have a reinforcing effect, thereby improving the structural strength of the longitudinal beam body 1 and improving the force transmission stability of the longitudinal beam body 1. When the vehicle is subjected to a high-speed collision, the fourth reinforcing member 6 can effectively protect the longitudinal beam body 1, reduce the amount of intrusion at the rear of the vehicle, reduce the structural damage to the longitudinal beam body 1 caused by the collision, and improve the safety of the collision.

[0122] Furthermore, such as Figure 1 and Figure 2 As shown, the longitudinal beam groove 11 is open upwards. The groove depth of the longitudinal beam groove 11 can be set to be greater than or equal to the size of the fourth reinforcing member 6, and the groove width of the longitudinal beam groove 11 is greater than the outer size of the fourth reinforcing member 6. In this way, the fourth reinforcing member 6 can extend from the open side of the longitudinal beam groove 11 along the Z direction into the longitudinal beam groove 11, and the side flange 61 of the fourth reinforcing member is fitted with the side wall of the longitudinal beam groove 11. The fourth reinforcing member 6 is connected to the side wall of the longitudinal beam groove 11 by welding. Figure 1 and Figure 7As shown, the front and rear ends of the fourth reinforcing member 6 are respectively provided with a front positioning flange 63 and a rear positioning flange 64. The front positioning flange 63 is welded to the third reinforcing member 4, and the rear positioning flange 64 is connected to the inner bottom wall of the longitudinal beam body 1. In this way, the fourth reinforcing member 6 can be connected to the longitudinal beam body 1 and the third reinforcing member 4, and the connection has high reliability and good stability.

[0123] The heights of the front positioning flange 63 and the rear positioning flange 64 are freely adjustable, and the rear floor 10 is located on the upper side of the fourth reinforcing member 6. The H-shaped structure (with adjustable cavity height) formed by the rear floor 10, the fourth reinforcing member 6, and the longitudinal beam body 1 can improve the bending strength of the entire longitudinal beam and enhance its bending resistance in the face of high-speed rear impacts or offset rear impacts. Furthermore, the side flange 61 of the fourth reinforcing member facilitates the electrophoresis process of the entire longitudinal beam body 1 and enhances its corrosion resistance.

[0124] Furthermore, the width and height of the overlapping edge of the front positioning flange 63 can be adjusted according to actual needs, while increasing the number of welding points to enhance the structural connection stability. Adjusting the height of the front positioning flange 63 can adjust the proportion of the upper and lower cavities within the main body 1 of the H-shaped longitudinal beam, thereby enhancing the bending stiffness of the entire main body 1 of the longitudinal beam. For example... Figure 8 As shown, a reinforcing rib 621 is provided on the bottom wall 62 of the fourth reinforcing member, and the number and form of the reinforcing rib 621 can be different. The number of reinforcing ribs 621 or the form of the local reinforcing ribs 621 can be appropriately increased or changed according to the reinforcement requirements.

[0125] And, such as Figure 6 As shown, the length of the side flange 913 of the third reinforcing member 4 can be appropriately shortened or increased according to the side length of the trailer hook of the trailer hook beam structure 22. At the same time, it is necessary to ensure that the bottom wall of the third reinforcing member 4 and the fourth reinforcing member 6 have a certain amount of overlap, so as to achieve the purpose of lightweighting while meeting the performance requirements.

[0126] In practical applications, the first reinforcing member 3 and the third reinforcing member 4 can be selectively installed or installed simultaneously. The specific choice depends on the specific application requirements. For example, when the vehicle's primary focus is on low-speed collisions, the structural strength required for the longitudinal beam body 1 is relatively low. In this case, only the first reinforcing member 3 can be installed on the longitudinal beam body 1 to meet the reinforcement requirements during low-speed collisions. Conversely, when the vehicle's primary focus is on high-speed collisions, the structural strength required for the longitudinal beam body 1 is relatively high. In this case, only the third reinforcing member 4 can be installed on the longitudinal beam body 1 to meet the reinforcement requirements during high-speed collisions. Alternatively, both the first reinforcing member 3 and the third reinforcing member 4 can be installed simultaneously on the longitudinal beam body 1, resulting in higher strength to withstand both low-speed and high-speed collisions. This reduces damage to the longitudinal beam body 1 and surrounding structures during both low-speed and high-speed collisions, thereby improving the vehicle's collision performance.

[0127] Therefore, by setting the fourth reinforcing member 6 to be completely built into the longitudinal beam groove 11, both side flanges 913 of the fourth reinforcing member 6 support each other with the inner wall of the longitudinal beam body 1, and the connection area between the fourth reinforcing member 6 and the longitudinal beam body 1 in the Z and Y directions is large, the reinforcing effect of the fourth reinforcing member 6 on the structure of the longitudinal beam body 1 can be effectively improved, thereby improving the load bearing capacity of the longitudinal beam body 1.

[0128] In some embodiments, the vehicle body longitudinal beam 100 further includes a fifth reinforcing member 7, which is installed in the longitudinal beam groove 11 and is located in front of the fourth reinforcing member 6.

[0129] Specifically, the fifth reinforcing member 7 is installed inside the longitudinal beam groove 11. The fifth reinforcing member 7 can support the inner wall of the longitudinal beam groove 11. The fifth reinforcing member 7 is spaced apart from the fourth reinforcing member 6 and is located in front of the fourth reinforcing member 6. It can supplement the structural strength of the longitudinal beam groove 11 in front of the fourth reinforcing member 6, thereby improving the structural strength of the longitudinal beam body 1.

[0130] Furthermore, such as Figure 1 , Figure 2 and Figure 9 As shown, the fifth reinforcing member 7 is completely embedded in the longitudinal beam groove 11, so that the bottom wall 71 of the fifth reinforcing member fits with the bottom wall of the longitudinal beam groove 11, and the side flange 72 of the fifth reinforcing member fits with the side wall of the longitudinal beam groove 11. Furthermore, the fifth reinforcing member 7 is welded to the inner wall of the longitudinal beam groove 11, which can improve the connection reliability between the two.

[0131] Therefore, by setting the fifth reinforcing member 7, the local strength at the rear end of the longitudinal beam body 1 is increased, the strength distribution of the entire longitudinal beam body 1 is balanced, non-ideal bending of the longitudinal beam body 1 at this point is prevented, and the longitudinal strength of the entire longitudinal beam body 1 is improved.

[0132] This utility model also proposes a vehicle body structure 1000.

[0133] The vehicle body structure 1000 according to the present utility model includes a vehicle body longitudinal beam 100 as described in any of the above embodiments. The vehicle body longitudinal beam 100 is provided as two, and the two vehicle body longitudinal beams 100 are spaced apart along the vehicle width direction. A rear crossbeam 9 is connected between the longitudinal beam bodies 1 of the two vehicle body longitudinal beams 100.

[0134] Specifically, the width direction of the vehicle is the transverse direction. Two longitudinal beams 100 are spaced apart along the transverse direction of the vehicle, forming an installation space between them. The two longitudinal beams 100 are connected by a rear crossbeam 9, which allows the rear crossbeam 9 to support the two longitudinal beams 100, making the structure of the three more reliable.

[0135] Both longitudinal beams 100 extend longitudinally along the vehicle, and the rear crossbeam 9 extends laterally along the vehicle. The rear crossbeam 9 is vertically connected between the two longitudinal beams 100, forming a stable body structure 1000. The rear crossbeam 9 and the two longitudinal beams 100 can achieve force transmission paths to each other. In this way, the body structure 1000 has both lateral and longitudinal force transmission paths to balance the force on the rear of the body structure 1000. With multiple force transmission paths and good force transmission stability, the degree of structural damage can be reduced, and the overall intrusion at the rear of the vehicle can be reduced.

[0136] In some embodiments, the vehicle body structure 1000 further includes a connector 91, one end of which is connected to the rear crossbeam 9, and the other end is adapted to be connected to the rear bulkhead 8.

[0137] Specifically, the rear crossbeam 9 and the rear bulkhead 8 are connected by a connector 91, which allows the connector 91 to support the rear bulkhead 8 and the rear crossbeam 9 respectively, thereby enhancing the structural strength of the rear crossbeam 9 and the rear bulkhead 8. Furthermore, through the above arrangement, the forces between the rear crossbeam 9, the two longitudinal beams 100 of the vehicle body, and the rear bulkhead 8 can be balanced, thus improving the overall structural stability.

[0138] The rear crossbeam 9 is located on the front side of the rear bulkhead 8 and the two are spaced apart to form the installation space for the connector 91. The connector 91 can extend in the front-rear direction, and the front end of the connector 91 is connected to the rear crossbeam 9 and the rear end is connected to the rear bulkhead 8. This enables the connection between the rear bulkhead 8 and the rear crossbeam 9, and the two can form a force transmission path in the front-rear direction. After the vehicle is hit by a collision, the force can be transmitted between the rear crossbeam 9 and the rear bulkhead 8 through the connector 91, so that the force is dispersed, which can reduce the degree of structural damage and reduce the overall intrusion of the rear of the vehicle.

[0139] In some embodiments, two connectors 91 are provided, and the two connectors 91 are spaced apart along the vehicle width direction.

[0140] like Figure 1 , Figure 2 and Figure 11 As shown, there are two connectors 91, which are spaced apart laterally along the vehicle. Both connectors 91 extend longitudinally, as do the two longitudinal beam bodies 1. The rear crossbeam 9 extends laterally along the vehicle and is perpendicularly connected between the two longitudinal beam bodies 1. The two connectors 91 are perpendicularly connected between the rear crossbeam 9 and the rear bulkhead 8, which makes the structure of the vehicle body 1000 more stable. In this way, after the vehicle is subjected to a high-speed or low-speed collision, the force is transmitted between the rear crossbeam 9 and the rear bulkhead 8 through the two connectors 91, so that the force is dispersed, reducing the degree of structural damage and reducing the overall intrusion of the rear of the vehicle, thereby improving collision safety.

[0141] Among them, such as Figure 3 and Figure 11 As shown, the rear end of the connector 91 is provided with a rear flange 911, which can be welded to the rear bulkhead 8. The front end of the connector 91 is provided with a front flange 912, which can be welded to the rear crossbeam 9. Additionally, side flanges 913 are provided on both sides of the connector 91, which can be welded to the rear floor 10. The number of side flanges 913 depends on the available space length of the rear luggage compartment. This connector 91, together with the longitudinal beam body 1 and its reinforcing structure, forms a unique multi-force transmission structure. In the event of an offset high-speed collision, the additional force transmission path will disperse part of the load on the longitudinal beam body 1, effectively improving the strength and bending resistance of the rear of the vehicle body and reducing the overall intrusion of the rear of the vehicle.

[0142] Furthermore, the front flange 912 of the connector 91 is provided with a boss structure 914, which can enhance the structural strength of the connector 91. The boss structure 914 is provided with mounting holes and weight reduction holes. The mounting holes can accommodate the battery or charging / discharging device on the vehicle. The number of weight reduction holes needs to be reasonably set in order to achieve weight reduction while ensuring the strength of the entire connector 91.

[0143] And, such as Figure 11 As shown, the connector 91 is relatively long and has many features. There are many connection welds at the side flange 913. The structural features can be reduced for different purposes, but the reinforcing rib 621 feature of the boss structure 914 should be retained. At the same time, the design and distribution of the weight reduction holes can be flexibly set to achieve the purpose of weight reduction and reducing process costs.

[0144] In some embodiments, the rear crossbeam 9 is equipped with a sixth reinforcing member 92, and the front end of the connector 91 is connected to the sixth reinforcing member 92.

[0145] Specifically, the sixth reinforcing member 92 is connected to the rear crossbeam 9 in the transverse direction. The sixth reinforcing member 92 can enhance the structural strength of the rear crossbeam 9 in the transverse direction, thereby improving the overall structural strength of the rear crossbeam 9. Furthermore, the front end of the connecting member 91 is connected to the sixth reinforcing member 92, which enables the connection between the connecting member 91 and the rear crossbeam 9.

[0146] like Figure 1 , Figure 2 and Figure 12 As shown, the extension direction of the sixth reinforcing member 92 is consistent with the extension direction of the rear crossbeam 9, both extending laterally along the vehicle. The two can be connected by welding, which can effectively improve the structural strength of the rear crossbeam 9 and enhance the bending strength of the entire rear crossbeam 9, prevent the rear crossbeam 9 from bending severely during a collision, protect the fuel, electric motor or battery system located on the side of the rear crossbeam 9 away from the anti-collision beam, and increase the vehicle's protection capability against high-speed rear collisions, thereby enhancing the vehicle's safety.

[0147] Furthermore, the length of the sixth reinforcing member 92 can be appropriately adjusted according to the installation position of the connecting member 91. Under the premise of ensuring its overall bending resistance, the length of the sixth reinforcing member 92 can be shortened from both sides to the middle or changed to a combination of multiple reinforcing members, which can achieve the purpose of lightweighting and cost reduction.

[0148] In some embodiments, the sixth reinforcing member 92 is provided with at least one second reinforcing boss 923. By providing the second reinforcing boss 923, the structural strength of the sixth reinforcing member 92 can be enhanced. The high structural strength of the sixth reinforcing member 92 can effectively enhance the structural strength of the rear crossbeam 9. Furthermore, the front end of the connecting member 91 is connected to the sixth reinforcing member 92. The high structural strength of the sixth reinforcing member 92 can enhance the connection strength between the rear crossbeam 9 and the connecting member 91, thereby improving the force transmission stability and reliability between the two. The second reinforcing boss 923 can be one, two, three, four, etc.

[0149] like Figure 1 , Figure 2 and Figure 12 As shown, the sixth reinforcing member 92 extends laterally along the vehicle. Multiple second reinforcing protrusions 923 are provided on the front side 921 and rear side 922 of the sixth reinforcing member 92. The multiple second reinforcing protrusions 923 are distributed laterally at intervals. The surfaces of the multiple second reinforcing protrusions 923 are flat. Welding points can be set on the multiple second reinforcing protrusions 923 to weld the sixth reinforcing member 92 to the side wall of the rear crossbeam 9. The top edge 924 of the sixth reinforcing member is welded to the rear crossbeam 9. This can enhance the load resistance of the rear crossbeam 9 to the connecting member 91, enhance the bending strength of the entire rear crossbeam 9, prevent the rear crossbeam 9 from bending severely during high-speed collisions, protect the fuel, electric motor or battery system located on the side of the rear crossbeam 9 away from the anti-collision beam, and increase the vehicle's protection capability against high-speed rear collisions, thereby enhancing the vehicle's safety.

[0150] In some embodiments, the vehicle body structure 1000 further includes a rear bumper beam 2, which is detachably connected to the rear end of the longitudinal beam body 1.

[0151] Specifically, the rear bumper beam 2 is connected to the rear end of the longitudinal beam body 1, serving as a collision-absorbing structure at the rear of the vehicle. The rear bumper beam 2 extends laterally along the vehicle, and both ends of the rear bumper beam 2 are connected to the rear ends of the two longitudinal beam bodies 1. The rear bulkhead 8 is connected between the rear bumper beam 2 and the longitudinal beam bodies 1, forming a stable structure at the rear of the vehicle body structure 1000. After a collision, the rear bumper beam 2 is subjected to the collision force, which is sequentially transmitted through the rear bumper beam 2, the rear bulkhead 8, and the longitudinal beam bodies 1, thus achieving the dispersion and absorption of collision energy. Furthermore, the rear bulkhead 8 can be connected to other structures of the vehicle to provide support for those structures.

[0152] Among them, such as Figure 4As shown, the rear anti-collision beam 2 has anti-collision beam connecting flanges 211 at both ends of the front side of the transverse direction. The anti-collision beam connecting flanges 211 have multiple first mounting holes for connecting and fixing the rear panel 8, the first reinforcing member 3 and the rear anti-collision beam 2 with multiple bolts. The anti-collision beam connecting flanges 211 have multiple second mounting holes for connecting the second reinforcing member 5 to the rear anti-collision beam 2. The connection method is simple and the disassembly is convenient, which facilitates the connection and fixing of the rear anti-collision beam 2 and the longitudinal beam body 1.

[0153] In some embodiments, the rear bumper beam 2 is configured as a trailer hook beam structure 22, which is detachably connected to the rear end of the longitudinal beam body 1.

[0154] Specifically, when the trailer hook beam structure 22 is connected to the rear end of the longitudinal beam body 1, it is used to realize vehicle towing, such as... Figure 13 As shown, trailer hook beam connecting flanges 221 are respectively provided at both ends of the front side of the trailer hook beam structure 22. The trailer hook beam connecting flanges 221 are provided with multiple third mounting holes for connecting and fixing the rear panel 8, the first reinforcing member 3 and the trailer hook beam structure 22 with multiple bolts. The trailer hook beam connecting flanges 221 are also provided with multiple fourth mounting holes for connecting the second reinforcing member 5 to the trailer hook beam structure 22. The connection method is simple and easy to disassemble and assemble.

[0155] Therefore, the rear bumper beam 2 and the trailer hitch beam structure 22 are connected to the rear end of the vehicle body longitudinal beam 100 in the same way, and can share the rear cross beam 9 and the second reinforcing member 5, improving the utilization rate of structural components and the portability of component replacement. This allows for quick disassembly and replacement of the rear bumper beam 2 and the trailer hitch beam structure 22, making the vehicle compatible with both scenarios where a trailer hitch is used and those where it is not. This connection method will greatly reduce the cost for users to replace the trailer hitch and improve replacement efficiency. This design allows users to freely and quickly replace the trailer hitch while ensuring safety, such as meeting users' needs for towing RVs or motorboats, etc.

[0156] Furthermore, in actual design, the first reinforcing member 3 and the second reinforcing member 5 can both be connected to the rear end of the longitudinal beam body 1, or only one can be connected to the rear end of the longitudinal beam body 1 and the other can be connected to the rear panel 8, or both can be connected to the rear panel 8. There are various ways to set them up, and they can be flexibly selected.

[0157] In some embodiments, the trailer hook beam structure 22 is provided with a connector 222, which is inserted into the longitudinal beam groove 11 of the longitudinal beam body 1, and the connector 222 is detachably connected to the longitudinal beam body 1.

[0158] Specifically, such as Figure 13 , Figure 14 and Figure 15As shown, the trailer hook beam structure 22 has a connector 222 on the front side of the trailer hook beam connecting flange 221. The connector 222 extends forward and can be inserted into the longitudinal beam groove 11. The connector 222 can also be detachably connected to the longitudinal beam body 1 in the Y direction by bolts. The connector 222 extends forward by a certain length, which increases the connection area between the connector 222 and the longitudinal beam groove 11 in the front-rear direction. By locking it with bolts, the connection strength between the trailer hook beam structure 22 and the vehicle body longitudinal beam 100 can be effectively improved, thereby improving the reliability of the trailer.

[0159] Furthermore, the connection method of the trailer hook beam structure 22 can be changed from Y-direction bolt connection to Z-direction bolt connection as needed, but the size of the second reinforcing member 5 plane needs to be appropriately increased. At the same time, the Z-direction plane of the third reinforcing member 4 and the longitudinal beam body 1 needs to be appropriately drilled to reserve bolt installation positions.

[0160] The specific replacement process involves removing the five bolts on the anti-collision beam connecting flange 211, replacing the trailer hook beam structure 22, and then fixing it with the same five bolts. Two of the bolts are connected to the second reinforcing member 5 by bolts. The second reinforcing member 5 is fixedly connected to the outer side of the longitudinal beam body 1 by bolts. The other side is fixed by three layers of welds and the second reinforcing member 5 and the third reinforcing member 4. When the left structural member is connected to the left longitudinal beam body 1, it is bolted away from the other longitudinal beam body 1. This is also bolted when replacing the trailer hook. One of the bolts is connected to the rear panel 8, and the other two bolts are connected to the longitudinal beam body 1. The plug-in 222 of the trailer hook is connected to the longitudinal beam body 1 by two bolts. The bolt closest to the trailer hook is connected together by four structural components: the plug-in 222 of the trailer hook, the third reinforcing member 4, the longitudinal beam body 1, and the second reinforcing member 5. The bolt hole farther away from the trailer hook is only connected to the plug-in 222 of the trailer hook, the third reinforcing member 4, and the longitudinal beam body 1, which is a total of three structural components connected together. The strength of the two bolts enhances the durability of the trailer hook and increases the target towing capacity.

[0161] This utility model also proposes a vehicle.

[0162] The vehicle according to the embodiments of this utility model includes a body longitudinal beam 100 as described in any of the above embodiments and / or a body structure 1000 as described in any of the above embodiments. By providing a first reinforcing part and a second reinforcing part on the upper and lower sides of the longitudinal beam body 1 respectively, the structural strength of the body longitudinal beam 100 in the height direction can be enhanced, thereby improving the bending resistance of the body longitudinal beam 100 in the height direction. After a low-speed collision at the rear of the vehicle, the strength of the body longitudinal beam 100 can be strengthened by the first and second reinforcing parts, reducing structural deformation and other structural damage at the body longitudinal beam 100, thereby reducing the intrusion of the body longitudinal beam 100 into the passenger compartment, protecting the safety of the occupants. Furthermore, the body longitudinal beam 100 suffers minimal structural damage during a vehicle collision, reducing maintenance costs, and the structure is simple and has low installation costs. The rear anti-collision beam 2 is constructed as a trailer hitch beam structure 22, and the trailer hitch beam structure 22 is connected to the rear end of the body longitudinal beam 1, making the vehicle compatible with both scenarios where a trailer hitch is used and those where it is not. This connection method will greatly reduce the cost for users to replace the hitch and improve replacement efficiency.

[0163] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0164] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A vehicle body longitudinal beam, characterized in that, include: The longitudinal beam body (1) extends along the length of the vehicle body; A reinforcing member is connected to the longitudinal beam body (1). The reinforcing member is provided with at least one first reinforcing part and at least one second reinforcing part. One of the first reinforcing part and the second reinforcing part is located above the longitudinal beam body, and the other is located below the longitudinal beam body.

2. The vehicle body longitudinal beam according to claim 1, characterized in that, The first reinforcing part is configured as a first reinforcing member (3), and the second reinforcing part is configured as a second reinforcing member (5). Both the first reinforcing member (3) and the second reinforcing member (5) are connected to the longitudinal beam body (1). One of the first reinforcing member (3) and the second reinforcing member (5) is located above the longitudinal beam body (1), and the other is located below the longitudinal beam body (1).

3. The vehicle body longitudinal beam according to claim 2, characterized in that, The first reinforcing member (3) is disposed above the longitudinal beam body (1), the front end of the first reinforcing member (3) is connected to the rear end of the longitudinal beam body (1), and the rear end of the first reinforcing member (3) is adapted to be connected to the rear panel (8).

4. The vehicle body longitudinal beam according to claim 3, characterized in that, The first reinforcing member (3) includes a main body plate (31) and a rear side plate (32). The main body plate (31) is connected to the upper part of the longitudinal beam body (1). The rear side plate (32) is connected to the rear end of the main body plate (31) and bends upward relative to the main body plate (31). The rear side plate (32) is connected to the rear panel (8).

5. The vehicle body longitudinal beam according to claim 4, characterized in that, A first reinforcing boss (33) is formed at the connection between the rear side plate (32) and the main body plate (31), and the first reinforcing boss (33) protrudes upward.

6. The vehicle body longitudinal beam according to claim 2, characterized in that, The second reinforcing member (5) is disposed below the longitudinal beam body (1), the front end of the second reinforcing member (5) is connected to the longitudinal beam body (1), and the rear end of the second reinforcing member (5) is adapted to be connected to the rear panel (8).

7. The vehicle body longitudinal beam according to claim 6, characterized in that, The second reinforcing member (5) includes a support (51) and a connecting flange (52), the support (51) being connected to the longitudinal beam body (1), and the connecting flange (52) being adapted to be connected to the rear panel (8).

8. The vehicle body longitudinal beam according to claim 7, characterized in that, The support part (51) has a support groove (511), at least a portion of the longitudinal beam body (1) is accommodated in the support groove (511), and the connecting flange (52) is connected to the rear end of the support part (51) and connected to the front side of the rear panel (8).

9. The vehicle body longitudinal beam according to claim 8, characterized in that, The support portion (51) includes a support bottom wall (512) and at least one support side wall (513), the support bottom wall (512) and at least one support side wall (513) together defining the support groove (511).

10. The vehicle body longitudinal beam according to claim 9, characterized in that, Two support sidewalls (513) are provided. The two support sidewalls (513) are distributed opposite to each other and are respectively connected to the two sides of the support bottom wall (512) to jointly define the support groove (511). The connecting flange (52) is connected to the support bottom wall (512) and the support sidewalls (513).

11. The vehicle body longitudinal beam according to claim 2, characterized in that, It also includes a third reinforcing member (4), which is disposed above the longitudinal beam body (1) and connected to the longitudinal beam body (1).

12. The vehicle body longitudinal beam according to claim 11, characterized in that, The main body of the longitudinal beam (1) has an upward-opening longitudinal beam groove (11), and the third reinforcing member (4) is installed in the longitudinal beam groove (11).

13. The vehicle body longitudinal beam according to claim 12, characterized in that, The third reinforcing member (4) is located in the longitudinal beam groove (11) and is disposed between the first reinforcing member (3) and the longitudinal beam body (1).

14. The vehicle body longitudinal beam according to claim 12, characterized in that, The third reinforcing member (4) includes a reinforcing member base plate (41) and a reinforcing member side plate (42). There are two reinforcing member side plates (42), which are respectively connected to both sides of the reinforcing member base plate (41) to jointly define the reinforcing groove. The reinforcing member base plate (41) and the reinforcing member side plate (42) are respectively connected to the inner wall of the longitudinal beam groove (11).

15. The vehicle body longitudinal beam according to claim 12, characterized in that, It also includes a fourth reinforcing member (6), which is installed in the longitudinal beam groove (11), and the rear end of the fourth reinforcing member (6) is connected to the front end of the third reinforcing member (4).

16. The vehicle body longitudinal beam according to claim 15, characterized in that, It also includes a fifth reinforcing member (7), which is installed in the longitudinal beam groove (11) and is located in front of the fourth reinforcing member (6).

17. A vehicle body structure, comprising longitudinal beams as described in any one of claims 1-16, characterized in that: The vehicle body longitudinal beams are configured as two, and the two vehicle body longitudinal beams are spaced apart along the vehicle width direction. A rear crossbeam (9) is connected between the main body (1) of the two vehicle body longitudinal beams.

18. The vehicle body structure according to claim 17, characterized in that, It also includes a connector (91), one end of which is connected to the rear crossbeam (9) and the other end is adapted to be connected to the rear panel (8).

19. The vehicle body structure according to claim 18, characterized in that, The connector (91) is provided in two parts, and the two connectors (91) are spaced apart along the width direction of the vehicle.

20. The vehicle body structure according to claim 18, characterized in that, The rear crossbeam (9) is equipped with a sixth reinforcing member (92), and the front end of the connector (91) is connected to the sixth reinforcing member (92).

21. The vehicle body structure according to claim 20, characterized in that, The sixth reinforcing member (92) is provided with at least one second reinforcing boss (923).

22. The vehicle body structure according to claim 17, characterized in that, It also includes a rear anti-collision beam (2), which is detachably connected to the rear end of the longitudinal beam body (1).

23. The vehicle body structure according to claim 22, characterized in that, The rear anti-collision beam (2) is constructed as a trailer hook beam structure (22), and the trailer hook beam structure (22) is detachably connected to the rear end of the longitudinal beam body (1).

24. The vehicle body structure according to claim 23, characterized in that, The trailer hook beam structure (22) is provided with a connector (222), which is inserted into the longitudinal beam groove (11) of the longitudinal beam body (1). The connector (222) is detachably connected to the longitudinal beam body (1).

25. A vehicle, characterized in that, Includes the vehicle body longitudinal beams as described in any one of claims 1-16 and / or the vehicle body structure as described in any one of claims 17-24.

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