Vehicle body longitudinal force transmission structure and vehicle

Abstract

The utility model provides a vehicle body longitudinal force transmission structure and a vehicle. The vehicle body longitudinal force transmission structure comprises a front cabin longitudinal beam and a front floor lower longitudinal beam located at the bottom of a front floor. The front cabin longitudinal beam comprises a longitudinal beam front section and a longitudinal beam rear section which are connected end to end, and the front end of the front floor lower longitudinal beam is connected with the rear end of the longitudinal beam rear section; the longitudinal beam rear section is integrally formed in the front wall lower portion located below the front wall plate, the front wall lower portion is formed in a die-casting mode, the front end of the front wall lower portion is connected with the front wall plate, and the rear end of the front wall lower portion is connected with the front floor. According to the longitudinal force transmission structure of the vehicle body, the longitudinal beam rear section in the front cabin longitudinal beam is integrated in the front wall lower part, so that the front cabin longitudinal beam rear part and the peripheral vehicle body parts form an integrated structure, and the problems of cracking, separation and the like of the connecting position between the front cabin longitudinal beam rear part and the peripheral parts can be avoided when the vehicle is collided; the collision force transmission effect between the front cabin longitudinal beam and the peripheral vehicle body parts can be guaranteed, and the collision safety of the whole vehicle can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, and particularly relates to a longitudinal force transmission structure of a vehicle body; at the same time, the utility model also relates to a vehicle provided with the longitudinal force transmission structure of the vehicle body. Background Art

[0002] The collision force transmission structure of an automobile is an important part of the safety performance of the automobile. It is designed to effectively disperse and absorb impact force during a collision to protect the vehicle structure and the safety of passengers. In the prior art, the front engine compartment longitudinal beam and the front floor lower longitudinal beam are used as longitudinal force transmission components of the vehicle body. Generally, they adopt a separate sheet metal structure, are welded to surrounding parts to form the whole vehicle body structure, and serve as a force transmission channel during a vehicle collision. However, under the impact of a vehicle collision, due to reasons such as cracking and disconnection at the connection positions, it is easy to limit the collision force transmission effect between the front engine compartment longitudinal beam and the surrounding vehicle body parts, which is not conducive to improving the overall vehicle collision safety. Summary of the Utility Model

[0003] In view of this, the utility model aims to propose one to improve the overall vehicle collision safety.

[0004] To achieve the above object, the technical solution of the utility model is realized as follows:

[0005] A longitudinal force transmission structure of a vehicle body includes a front engine compartment longitudinal beam and a front floor lower longitudinal beam located at the bottom of the front floor; the front engine compartment longitudinal beam includes a front longitudinal beam section and a rear longitudinal beam section connected end to end, and the front end of the front floor lower longitudinal beam is connected to the rear end of the rear longitudinal beam section; the rear longitudinal beam section is integrally formed in the lower front enclosure located below the front bulkhead. The lower front enclosure is die-cast, and the front end of the lower front enclosure is connected to the front bulkhead, and the rear end of the lower front enclosure is connected to the front floor.

[0006] Further, the rear end of the front longitudinal beam section is connected and fixed to the front end of the rear longitudinal beam section through a plug-in structure; and / or, the front longitudinal beam section is made of an extruded profile or is roll-formed from a steel sheet metal.

[0007] Further, a front floor upper longitudinal beam is provided on the top of the front floor, and the front end of the front floor upper longitudinal beam is connected to the lower front enclosure; the front part of the front floor upper longitudinal beam is arranged corresponding to the rear longitudinal beam section up and down, and the rear part of the front floor upper longitudinal beam is arranged corresponding to the front floor lower longitudinal beam up and down.

[0008] Further, a lower front enclosure cross beam and a lower front bulkhead plate located below the lower front enclosure cross beam are formed on the lower front enclosure; the lower front bulkhead plate includes a middle channel connecting plate in the middle and lower front bulkhead plates respectively arranged on the left and right sides of the middle channel connecting plate, and the rear longitudinal beam section is located at the bottom of the lower front bulkhead plate.

[0009] Further, a front sill inner panel front section connected to the lower front panel and a torque box located at the bottom of the lower front panel are formed at the lower part of the front enclosure; one side of the torque box is connected to the rear section of the longitudinal beam, and the other side of the torque box is connected to the front section of the front sill inner panel.

[0010] Further, a connecting beam located at the bottom of the lower front panel is formed at the lower part of the front enclosure; one end of the connecting beam is connected to the rear section of the longitudinal beam, and the other end of the connecting beam is connected to a connecting cross beam formed at the bottom of the middle channel connecting plate.

[0011] Further, an inclined support beam located at the bottom of the lower front panel is formed at the lower part of the front enclosure; the inclined support beam is connected between the rear section of the longitudinal beam and the connecting beam, and the rear section of the longitudinal beam, the connecting beam and the inclined support beam are connected to form a triangular structure.

[0012] Further, one end of the connecting beam connected to the rear section of the longitudinal beam is arranged to be connected with the torque box in the vehicle's left - right direction; and / or, one end of the inclined support beam connected to the rear section of the longitudinal beam is arranged to be connected with the torque box in the vehicle's left - right direction.

[0013] Further, front sub - frame mounting points are provided in the connecting beam; there are multiple front sub - frame mounting points, and at least one front sub - frame mounting point is located at the connection position between the inclined support beam and the connecting beam.

[0014] Compared with the prior art, the present utility model has the following advantages:

[0015] In the longitudinal force - transmitting structure of the vehicle body of the present utility model, by integrating the rear section of the longitudinal beam in the front engine compartment longitudinal beam into the lower part of the front enclosure, the integrally - formed lower part structure of the front enclosure can be utilized to form an integral structure between the rear part of the front engine compartment longitudinal beam and the surrounding vehicle body components. This helps to avoid problems such as cracking and disconnection at the connection positions between the rear part of the front engine compartment longitudinal beam and the surrounding components during vehicle collision, ensures the collision force transmission effect between the front engine compartment longitudinal beam and the surrounding vehicle body components, and is beneficial to improving the vehicle's collision safety.

[0016] Secondly, the front section and the rear section of the front engine compartment longitudinal beam are connected and fixed through a plug-in structure, which facilitates the connection between the two and also ensures the connection reliability between them. The front section of the longitudinal beam is made of an extruded profile or a steel sheet metal formed by rolling, which facilitates the preparation of the front section of the longitudinal beam, helps to ensure the structural strength of the front section of the longitudinal beam, and the energy absorption effect during a collision. By setting the longitudinal beam on the front floor, the connection strength between the front floor and the lower part of the front panel can be increased, which helps to avoid bending and breaking at the connection position between the lower part of the front panel and the front floor during a vehicle collision. At the same time, the longitudinal beam on the front floor, the rear section of the longitudinal beam, and the longitudinal beam under the front floor are arranged in an up-and-down corresponding manner, which can also utilize the cooperation of multiple beam bodies to act together, achieving a better structural strengthening and collision force transmission effect, helping to increase the stiffness of the vehicle body and improve the collision safety of the vehicle.

[0017] Furthermore, the lower part of the front panel is formed with a lower cross beam of the front panel and a lower panel of the front panel, which helps to reduce the number of components in the lower part of the front panel, facilitates the preparation of the structure of the lower part of the front panel, helps to reduce the vehicle body manufacturing cost, and also helps to improve the overall structural strength of the lower part of the front panel, contributing to the safety of the whole vehicle during a collision. By forming the front section of the inner panel of the door sill beam and the torque box, the connection between the torque box and the front section of the inner panel of the door sill beam can be utilized to form a force transmission channel between the rear section of the longitudinal beam and the vehicle body door sill beam, which helps to reliably transmit the collision force of the front engine compartment longitudinal beam to the door sill beam. By setting a connecting beam connected to the rear section of the longitudinal beam and connecting the two side connecting beams together through a connecting cross beam at the bottom of the middle channel connecting plate, not only can the lateral stiffness of the bottom of the lower part of the front panel be increased, which helps to improve the torsional stiffness of the whole vehicle, but also a lateral force transmission channel can be increased, which is beneficial to the dispersion of the collision force transmission.

[0018] In addition, by setting an inclined support beam, the stiffness of the bottom of the lower part of the front panel can be further increased, which can better improve the torsional stiffness of the whole vehicle. At the same time, it can also further increase the force transmission channel, which is beneficial to improving the collision force transmission ability. The connection between the end of the connecting beam connected to the rear section of the longitudinal beam, the end of the inclined support beam connected to the rear section of the longitudinal beam, and the torque box is arranged in a connecting manner, which can better increase the lateral stiffness of the bottom of the lower part of the front panel and also helps to disperse the collision force among them. By setting a front subframe mounting point in the connecting beam, it is convenient to connect the front subframe. The front subframe mounting point is located at the connection position between the inclined support beam and the connecting beam, which can increase the structural strength of the front subframe mounting point, ensure the stability of the front subframe installation, and also facilitate the transmission of the force from the front subframe to the vehicle body force transmission channel.

[0019] In addition, another object of the present invention is to provide a vehicle, in which the vehicle body longitudinal force transmission structure as described above is provided.

[0020] For the vehicle of the present invention, through the above-mentioned vehicle body longitudinal force transmission structure, it is beneficial to improve the collision safety of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which form a part of the present utility model, are used to provide a further understanding of the present utility model. The schematic embodiments and descriptions thereof of the present utility model are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0022] Figure 1 is a schematic structural view of the longitudinal force transmission structure of the vehicle body according to an embodiment of the present utility model from one perspective;

[0023] Figure 2 is a schematic structural view of the longitudinal force transmission structure of the vehicle body according to an embodiment of the present utility model from another perspective;

[0024] Figure 3 is a schematic structural view of the lower part of the front bulkhead according to an embodiment of the present utility model from the first perspective;

[0025] Figure 4 is a schematic structural view of the lower part of the front bulkhead according to an embodiment of the present utility model from the second perspective;

[0026] Figure 5 is a schematic structural view of the lower part of the front bulkhead according to an embodiment of the present utility model from the third perspective;

[0027] Figure 6 is Figure 5 a partial schematic structural view in

[0028] Description of the reference numerals:

[0029] 1, front engine compartment longitudinal beam; 2, front floor; 3, lower longitudinal beam under the front floor; 4, front bulkhead; 5, lower part of the front bulkhead; 6, upper longitudinal beam on the front floor; 7, sill beam; 8, middle channel;

[0030] 101, front section of the longitudinal beam; 102, rear section of the longitudinal beam; 1021, front part; 1022, middle part; 1023, rear part; 1024, insertion slot;

[0031] 201, front cross beam of the seat;

[0032] 501, lower cross beam of the front bulkhead; 502, lower plate of the front bulkhead; 503, connecting plate of the middle channel; 5031, extending part; 504, front section of the inner sill beam; 505, torsion box; 5051, beam body; 506, connecting beam; 507, connecting cross beam; 508, inclined support beam; 509, reinforcing rib; 510, front subframe mounting point;

[0033] A, triangular structure. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0035] In the description of the present utility model, it should be noted that if terms indicating orientation or positional relationship such as "upper", "lower", "inner", "outer", etc. appear, they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present utility model. In addition, if terms such as "first", "second", etc. appear, they are also only for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0036] In addition, in the description of the present utility model, unless otherwise clearly defined, the terms "installation", "connection", "connection", "connector" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood in combination with specific situations.

[0037] The present utility model will be described in detail below with reference to the drawings and in combination with embodiments.

[0038] This embodiment relates to a longitudinal force transmission structure of a vehicle body, which optimizes its own structure to solve the problems in the prior art that the connection positions where the front engine compartment longitudinal beam 1 and the front floor lower longitudinal beam 3 are welded to surrounding parts are prone to cracking, disconnection, etc., thus restricting the collision force transmission effect between the front engine compartment longitudinal beam 1 and the surrounding vehicle body parts.

[0039] In terms of the overall composition, the longitudinal force transmission structure of the vehicle body includes a front engine compartment longitudinal beam 1 and a front floor lower longitudinal beam 3 located at the bottom of the front floor 2. The front engine compartment longitudinal beam 1 includes a front longitudinal beam section 101 and a rear longitudinal beam section 102 connected end to end, and the front end of the front floor lower longitudinal beam 3 is connected to the rear end of the rear longitudinal beam section 102. The rear longitudinal beam section 102 is integrally formed in the lower front enclosure 5 below the front bulkhead 4. The lower front enclosure 5 is die-cast, and the front end of the lower front enclosure 5 is connected to the front bulkhead 4, and the rear end of the lower front enclosure 5 is connected to the front floor 2.

[0040] The longitudinal body force transmission structure described in this embodiment integrates the rear section 102 of the longitudinal beam in the front engine compartment longitudinal beam 1 into the lower part 5 of the front panel. By using the integrally formed structure of the lower part 5 of the front panel, the rear part of the front engine compartment longitudinal beam 1 and the surrounding body components form an integral structure, which helps to avoid problems such as cracking and disconnection at the connection positions between the rear part of the front engine compartment longitudinal beam 1 and the surrounding components during vehicle collision, ensures the collision force transmission effect between the front engine compartment longitudinal beam 1 and the surrounding body components, and is beneficial to improving the vehicle collision safety performance.

[0041] Based on the above overall introduction, an exemplary structure of the longitudinal body force transmission structure described in this embodiment is as shown in Figure 1 and Figure 2 Considering that the front engine compartment longitudinal beam 1 and the longitudinal beam under the front floor 3 are symmetric about the left and right, and the lower part 5 of the front panel is also a symmetric structure about the left and right, only one side is taken as an example for illustration in this embodiment. In this embodiment, the distance between the two longitudinal beams under the front floor 3 is greater than the distance between the two front sections 101 of the longitudinal beam. In the up and down direction of the whole vehicle, the two rear sections 102 of the longitudinal beam are arranged in a "V" shape. In the front and rear direction of the whole vehicle, each rear section 102 of the longitudinal beam is arranged following the shape of the lower part 5 of the front panel.

[0042] As shown in Figure 4 and Figure 5 In this embodiment, the rear section 102 of the longitudinal beam includes a front part 1021, a middle part 1022, and a rear part 1023 that are connected in sequence from front to back. Among them, the front part 1021 forms the front end of the rear section 102 of the longitudinal beam, and the rear part 1023 forms the rear end of the rear section 102 of the longitudinal beam. The front part 1021 is located on the front side of the front bulkhead 4 and extends forward in the front and rear direction of the whole vehicle. The rear part 1023 is located at the rear end of the lower part 5 of the front panel and extends backward beyond the lower part 5 of the front panel in the front and rear direction of the whole vehicle. The middle part 1022 is formed on the lower part 5 of the front panel and has two first side walls extending in the front and rear direction of the whole vehicle. The two first side walls are spaced apart in the left and right direction of the whole vehicle, and the front end of the first side wall is connected to the front part 1021, and the rear end of the first side wall and the front end of the rear part 1023 are connected. The middle part 1022 also includes a first connecting rib arranged in a zigzag shape between the two first side walls.

[0043] As a preferred connection method, the rear end of the front section 101 of the longitudinal beam and the front end of the rear section 102 of the longitudinal beam are connected and fixed through a plug-in structure. This can facilitate the connection between the two and also ensure the connection reliability between the two. During specific implementation, as shown in Figure 4 In, the plug-in structure includes an insertion part provided at the rear end of the front section 101 of the longitudinal beam and an insertion slot 1024 provided at the front part 1021 of the rear section 102 of the longitudinal beam. By inserting the insertion part into the insertion slot 1024, the rear end of the front section 101 of the longitudinal beam and the front end of the rear section 102 of the longitudinal beam can be connected together.

[0044] In addition, a connecting member is provided between both the insertion part and the side wall of the insertion groove 1024 to connect the two inserted together. Of course, the insertion groove 1024 can also be arranged at the rear end of the front longitudinal beam 101, and the insertion part can be arranged at the front part 1021 of the rear longitudinal beam 102. At this time, the connection between the front longitudinal beam 101 and the rear longitudinal beam 102 can also be realized.

[0045] In specific implementation, the front longitudinal beam 101 in this embodiment is made of an extruded profile or formed by roll pressing a steel sheet metal. Here, using an extruded profile or roll pressing a steel sheet metal for the front longitudinal beam 101 can facilitate the preparation of the front longitudinal beam 101, and also help to ensure the structural strength of the front longitudinal beam 101 and the energy absorption effect during a collision.

[0046] As a preferred implementation manner, as Figure 1 shown, an upper front floor longitudinal beam 6 is provided on the top of the front floor 2, and the front end of the upper front floor longitudinal beam 6 is connected to the lower front panel 5. The front part of the upper front floor longitudinal beam 6 is arranged vertically corresponding to the rear longitudinal beam 102, and the rear part of the upper front floor longitudinal beam 6 is arranged vertically corresponding to the lower front floor longitudinal beam 3. Among them, the front part of the upper front floor longitudinal beam 6 being arranged vertically corresponding to the rear longitudinal beam 102 means that their projections in the up-down direction of the whole vehicle overlap at least partially. The rear part of the upper front floor longitudinal beam 6 being arranged vertically corresponding to the lower front floor longitudinal beam 3 means that their projections in the up-down direction of the whole vehicle overlap at least partially.

[0047] In this embodiment, by providing the upper front floor longitudinal beam 6, the connection strength between the front floor 2 and the lower front panel 5 can be increased, which helps to avoid bending and breaking at the connection position between the lower front panel 5 and the front floor 2 during a vehicle collision. At the same time, arranging the upper front floor longitudinal beam 6 vertically corresponding to the rear longitudinal beam 102 and the lower front floor longitudinal beam 3 can also utilize the synergistic effect of multiple beam bodies 5051 to achieve a better structural strengthening and collision force transmission effect, which helps to increase the stiffness of the vehicle body and improve the collision safety of the vehicle.

[0048] In addition, the upper front floor longitudinal beam 6 extends in the front-rear direction of the whole vehicle to the front seat cross beam 201 and is connected to the front seat cross beam 201. In this way, the collision force received by the upper front floor longitudinal beam 6 can be transmitted backward to the front seat cross beam 201, and the collision force can be further dispersed and transmitted in the left-right direction of the whole vehicle through the front seat cross beam 201.

[0049] As a preferred implementation manner, in combination with Figure 3 and Figure 4As shown in the figure, a lower front panel 5 in this embodiment is formed with a lower front cross member 501 and a lower front panel 502 located below the lower front cross member 501. Among them, the lower front panel 502 includes a middle channel connecting plate 503 located in the middle and lower front panels 502 respectively arranged on the left and right sides of the middle channel connecting plate 503. The rear section of the longitudinal beam 102 is located at the bottom of the lower front panel 502. Here, forming the lower front cross member 501 and the lower front panel 502 on the lower front panel 5 can help reduce the number of components of the lower front panel 5, facilitate the preparation of the structure of the lower front panel 5, contribute to reducing the body manufacturing cost, and at the same time help improve the overall structural strength of the position of the lower front panel 5 and contribute to enhancing the safety during vehicle collision.

[0050] In terms of specific structure, the lower front cross member 501 is located at the top of the lower front panel 5 and is connected to the bottom of the front panel 4. The lower front cross member 501 here is conducive to guiding the collision force to extend along the left and right directions of the whole vehicle. The middle channel connecting plate 503 is arranged to penetrate along the front and rear directions of the lower front panel 5 and is in an "n" shape to match the shape of the middle channel 8. To improve the connection strength between the middle channel connecting plate 503 and the middle channel 8, an extension part 5031 extending towards the middle channel 8 is provided at the rear end of the middle channel connecting plate 503. The extension part 5031 can be inserted into the middle channel 8 and is connected to the middle channel 8. And the extension part 5031 and the middle channel 8 are connected together by a connecting piece passing through both of them.

[0051] In addition, the width of the front end of the middle channel connecting plate 503 in the left and right directions of the whole vehicle gradually increases along the direction pointing to the lower front cross member 501, which is conducive to improving the connection firmness between the middle channel connecting plate 503 and the lower front cross member 501 and the stability of the middle channel connecting plate 503 in bearing force. In this embodiment, the lower front panel 502 is arranged in the space defined among the middle channel connecting plate 503, the lower front cross member 501, the front end of the sill beam 7 and the front floor 2, so as to connect the four together. In this embodiment, the lower front panel 5 is preferably formed by die-casting of aluminum alloy or magnesium alloy, which is conducive to forming, has a good weight reduction effect, and is also conducive to lightweight design.

[0052] As a preferred implementation method, as Figures 3 to 5 shown in the figure, the lower front panel 5 is formed with a front section of the inner sill beam 504 connected to the lower front panel 502 and a torque box 505 located at the bottom of the lower front panel 502. One side of the torque box 505 is connected to the rear section of the longitudinal beam 102, and the other side of the torque box 505 is connected to the front section of the inner sill beam 504. Here, by forming the front section of the inner sill beam 504 and the torque box 505, the connection between the torque box 505 and the front section of the inner sill beam 504 can be utilized to form a force transmission channel between the rear section of the longitudinal beam 102 and the body sill beam 7, which helps the collision force of the front engine compartment longitudinal beam 1 to be reliably transmitted to the sill beam 7.

[0053] The torsion box 505 in this embodiment includes two beam bodies 5051 extending in the left - right direction of the whole vehicle and arranged side by side in the front - rear direction of the whole vehicle. Each beam body 5051 has two second side walls arranged oppositely and a second connecting rib in a zigzag shape connected between the two second side walls. The torsion box 505 here is also easy to form and has good force - transmission performance.

[0054] Specifically, the front section 504 of the inner panel of the sill beam is located outside the lower panel 502 of the front wall panel. The cross - section of the front section 504 of the inner panel of the sill beam in the left - right direction of the whole vehicle is in an "L" shape, so as to be able to support the front end of the inner panel of the sill beam and be connected to the sill beam 7. The structure of the front section 504 of the inner panel of the sill beam here is simple, convenient for processing and forming, and has good use effect. In addition, the front section 504 of the inner panel of the sill beam also has a connecting part located on the front side of the inner panel of the sill beam. This connecting part is connected to the front end of the inner panel of the sill beam through a connecting piece, thereby further improving the connection stability between the sill beam 7 and the front section 504 of the inner panel of the sill beam.

[0055] As Figure 5 shown in [reference], as a preferred embodiment, a connecting beam 506 is formed at the bottom of the lower panel 502 of the front wall panel in the lower part 5 of the front wall. One end of the connecting beam 506 is connected to the rear section 102 of the longitudinal beam, and the other end of the connecting beam 506 is connected to a connecting cross - beam 507 formed at the bottom of the middle - channel connecting plate 503. By setting the connecting beam 506 connected to the rear section 102 of the longitudinal beam and connecting the two side connecting beams 506 together through the connecting cross - beam 507 at the bottom of the middle - channel connecting plate 503, not only can the lateral stiffness at the bottom of the lower part 5 of the front wall be increased, which helps to improve the torsional stiffness of the whole vehicle, but also a lateral force - transmission channel can be increased, which is beneficial to the transfer and dispersion of collision forces.

[0056] In detail, the connecting cross - beam 507 is arranged inside the rear end of the middle - channel connecting plate 503 and is located in front of the extending part 5031. Here, the connecting beam 506 is arranged following the shape of the middle - channel connecting plate 503 and has two third side walls arranged oppositely in the front - rear direction and a third connecting rib in a zigzag shape connected between the two third side walls. In the front - rear direction of the whole vehicle, the connecting cross - beam 507 is arranged close to the rear beam body 5051.

[0057] Still referring to Figure 5 and Figure 6As shown in the figure, an inclined support beam 508 is formed at the lower part of the front panel 5 and is located at the bottom of the lower plate 502 of the front bulkhead. The inclined support beam 508 is connected between the rear section 102 of the longitudinal beam and the connecting beam 506, and the rear section 102 of the longitudinal beam, the connecting beam 506, and the inclined support beam 508 are connected to form a triangular structure A. Here, by setting the inclined support beam 508, the stiffness of the bottom of the lower part of the front panel 5 can be further increased, which can better improve the torsional stiffness of the whole vehicle, and at the same time, it can also further increase the force transmission channel, which is beneficial to improving the transmission ability of the collision force.

[0058] It should be noted that the so-called "triangle" includes a standard triangle composed of three straight sides, and a quasi-triangle in which at least one side is non-straight but has a triangular shape as a whole. The triangular structure A in this embodiment is a quasi-triangular structure. Of course, when the part of the rear section 102 of the longitudinal beam used to form the above triangular structure A is set in a ratio shape, the above triangle can also be a standard triangle. However, generally speaking, in specific implementation, it is still preferably a quasi-triangle as shown in the figure. Figure 6 shown.

[0059] Among them, the inclined support beam 508 in this embodiment has two fourth side walls arranged relatively front and rear, and a fourth connecting rib in a folded line shape connected between the two fourth side walls. The inclined support beam 508 is also easy to form and has high strength and force transmission stability.

[0060] As a preferred implementation method, one end of the connecting beam 506 connected to the rear section of the longitudinal beam 102 is arranged to be connected to the torsion box 505 in the left-right direction of the whole vehicle. One end of the inclined support beam 508 connected to the rear section of the longitudinal beam 102 is arranged to be connected to the torsion box 505 in the left-right direction of the whole vehicle. By arranging the connection between one end of the connecting beam 506 connected to the rear section of the longitudinal beam 102, one end of the inclined support beam 508 connected to the rear section of the longitudinal beam 102 and the torsion box 505, the lateral stiffness of the bottom of the lower part of the front panel 5 can be better increased, and it is also helpful for the collision force to be dispersed and transmitted among them.

[0061] It should be noted that the so-called connection arrangement means that the projection of the end of the connecting beam 506 connected to the rear section of the front engine compartment longitudinal beam 1 and the torsion box 505 overlaps at least partially in the left-right direction of the whole vehicle. Specifically, the projections of the connection ends of the connecting beam 506 and the front-set beam body 5051 with the rear section of the longitudinal beam 102 overlap at least partially in the left-right direction of the whole vehicle. The projections of the connection ends of the inclined support beam 508 and the rear-set beam body 5051 with the rear section of the longitudinal beam 102 overlap at least partially in the left-right direction of the whole vehicle. In addition, each of the above-mentioned folded-line connecting ribs in this embodiment is not only beneficial to forming, but also beneficial to improving the structural strength and increasing the force transmission channel of the collision force.

[0062] To further improve the use performance of the longitudinal force transmission structure of the vehicle body, such asFigure 4 and Figure 6 As shown in Figure 6 , the connecting beam 506 is provided with front subframe mounting points 510. There are multiple front subframe mounting points 510, and at least one front subframe mounting point 510 is located at the connection position between the inclined support beam 508 and the connecting beam 506. Here, by arranging the front subframe mounting points 510 in the connecting beam 506, the connection of the front subframe is facilitated. Making the front subframe mounting points 510 located at the connection position between the inclined support beam 508 and the connecting beam 506 can increase the structural strength of the front subframe mounting points 510, ensure the stability of the front subframe installation, and at the same time is also conducive to the transmission of the force from the front subframe to the body force transmission channel.

[0063] In some embodiments, there are two front subframe mounting points 510. One front subframe mounting point 510 is arranged in the middle of the connecting beam 506, and the other front subframe mounting point 510 is arranged at the connection position between the inclined support beam 508 and the connecting beam 506. Specifically in implementation, the front subframe mounting points 510 can adopt threaded sleeves. Cross-shaped ribs are designed around the threaded sleeves, and the center of the cross-shaped ribs is the front subframe mounting point 510. Through the design of the cross-shaped rib lines, it is beneficial to improve the stability of the front subframe mounting points 510. Of course, the structural form, position, quantity, etc. of the front subframe mounting points 510 can also be adjusted according to the usage requirements.

[0064] In addition, in this embodiment, a plurality of reinforcing ribs 509 can also be arranged on the lower part of the front panel 5. The reinforcing ribs 509 can be arranged to extend along the front-rear direction or left-right direction of the whole vehicle according to the layout position. For example, a plurality of reinforcing ribs 509 can be arranged inside the extended part 5031, and a plurality of reinforcing ribs 509 are also arranged on the front panel lower cross member 501. By arranging the plurality of reinforcing ribs 509, on the basis of improving the structural strength, it is also conducive to guiding the dispersion and transmission of the collision force, and thus is beneficial to improving the collision safety.

[0065] The longitudinal force transmission structure of the body in this embodiment, by optimizing the structural form of the lower part of the front panel 5, enables the rear section 102 of the longitudinal beam in the front engine compartment longitudinal beam 1 to be integrated into the lower part of the front panel 5, which is beneficial to improving the connection firmness and stability between various components, and has good safety even in the event of a collision. At the same time, the further arranged torque box 505, connecting beam 506, inclined support beam 508, etc. are beneficial to improving the longitudinal force transmission effect of the body, and thus are beneficial to improving the collision safety of the whole vehicle.

[0066] In addition, this embodiment also relates to a vehicle, and the vehicle is provided with the longitudinal force transmission structure of the body as described above.

[0067] For the vehicle described in this embodiment, through the above longitudinal force transmission structure of the body, it is beneficial to improve the collision safety of the vehicle.

[0068] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A vehicle body longitudinal force transmission structure, characterized in that: It comprises a front cabin longitudinal beam (1), and a front floor lower longitudinal beam (3) located at the bottom of a front floor (2); The front cabin longitudinal beam (1) comprises a longitudinal beam front section (101) and a longitudinal beam rear section (102) connected end to end, and the front end of the front underfloor longitudinal beam (3) is connected to the rear end of the longitudinal beam rear section (102); The rear section (102) of the longitudinal beam is integrally formed in the lower part of the front enclosure (5) located below the front enclosure plate (4); the lower part of the front enclosure (5) is die-cast, and the front end of the lower part of the front enclosure (5) is connected to the front enclosure plate (4), and the rear end of the lower part of the front enclosure (5) is connected to the front floor (2).

2. The vehicle body longitudinal force transmission structure according to claim 1, characterized in that: The rear end of the longitudinal beam front section (101) and the front end of the longitudinal beam rear section (102) are connected and fixed via a plug-in structure; and / or, The longitudinal beam front section (101) is made of extruded profiles or rolled steel sheet metal.

3. The vehicle body longitudinal force transmission structure according to claim 1, characterized in that: A front floor upper longitudinal beam (6) is provided on the top of the front floor (2), and the front end of the front floor upper longitudinal beam (6) is connected to the front enclosure lower part (5); The front portion of the upper longitudinal beam (6) on the front floor is arranged in correspondence with the rear section (102) of the longitudinal beam, and the rear portion of the upper longitudinal beam (6) on the front floor is arranged in correspondence with the lower longitudinal beam (3) on the front floor.

4. The vehicle body longitudinal force transmission structure according to any one of claims 1 to 3, characterized in that: The lower part of the front wall (5) is formed with a lower front wall cross beam (501) and a lower front wall plate (502) located below the lower front wall cross beam (501); The dash panel lower plate (502) comprises a middle channel connecting plate (503) located in the middle, and dash panel lower plates (502) arranged on the left and right sides of the middle channel connecting plate (503), and the longitudinal beam rear section (102) is located at the bottom of the dash panel lower plate (502).

5. The vehicle body longitudinal force transmission structure according to claim 4, characterized in that: The lower part of the front wall (5) is formed with a front section of the inner plate of the sill beam (504) connected to the lower plate of the front wall (502), and a torsion box (505) located at the bottom of the lower plate of the front wall (502); One side of the torsion box (505) is connected to the rear section (102) of the longitudinal beam, and the other side of the torsion box (505) is connected to the front section (504) of the inner plate of the sill beam.

6. The vehicle body longitudinal force transmission structure according to claim 5, characterized in that: The lower part of the front enclosure (5) is formed with a connecting beam (506) located at the bottom of the lower plate (502) of the front enclosure, one end of the connecting beam (506) is connected to the rear section (102) of the longitudinal beam, and the other end of the connecting beam (506) is connected to a connecting cross beam (507) formed at the bottom of the middle channel connecting plate (503).

7. The vehicle body longitudinal force transmission structure according to claim 6, characterized in that: The lower part of the front enclosure (5) is formed with an oblique support beam (508) located at the bottom of the lower plate (502) of the front enclosure, and the oblique support beam (508) is connected between the rear section of the longitudinal beam (102) and the connecting beam (506), and the rear section of the longitudinal beam (102), the connecting beam (506) and the oblique support beam (508) are connected to form a triangular structure (A).

8. The vehicle body longitudinal force transmission structure according to claim 7, characterized in that: One end of the connecting beam (506) connected to the rear section (102) of the longitudinal beam is connected to the torsion box (505) in the left-right direction of the vehicle; and / or, One end of the oblique support beam (508) connected to the rear section (102) of the longitudinal beam is connected to the torsion box (505) in the left-right direction of the vehicle.

9. The vehicle body longitudinal force transmission structure according to claim 8, characterized in that: A front subframe mounting point (510) is provided in the connecting beam (506); There are a plurality of front subframe mounting points (510), and at least one of the front subframe mounting points (510) is located at a connection position between the oblique support beam (508) and the connecting beam (506).

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

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