Vehicle body front structure and vehicle

Abstract

The utility model provides a vehicle body front structure and a vehicle, and belongs to the technical field of vehicles, the vehicle body front structure comprises a cabin longitudinal beam, an A column, a force transmission structure and a floor longitudinal beam; the column A is positioned on the outer rear part of the cabin longitudinal beam; the force transmission structure is connected between the cabin longitudinal beam and the A column; and the front end of the floor longitudinal beam is connected with the cabin longitudinal beam and / or the force transmission structure. The engine room longitudinal beam is connected with the A column through the force transmission structure, the engine room longitudinal beam is further connected with the floor longitudinal beam, the force transmission structure serves as a main force transmission path, when a vehicle is in head-on collision, collision force borne by the engine room longitudinal beam is transmitted outwards and upwards to the A column through the force transmission structure, and serious deformation of a vehicle body is avoided. And the collision force transmitted from the cabin longitudinal beam to the floor longitudinal beam can be reduced, the non-deformability of the floor longitudinal beam is improved, and unstable rotation of the floor longitudinal beam is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicles, and more specifically relates to a vehicle body front structure and a vehicle. Background Art

[0002] The design of the front structure of the vehicle body plays a very important role in the transmission and dispersion of collision loads. The quality of its structure directly affects the collision performance of the entire vehicle.

[0003] When a vehicle is involved in a head-on collision, the collision energy is absorbed by the front part of the vehicle body and the collision load is transferred and dispersed to the rear of the vehicle. Due to the difference in Y-direction distance and Z-direction height between the cabin longitudinal beam and the floor longitudinal beam, the force transmission path between the cabin longitudinal beam and the floor longitudinal beam is not smooth, and the vehicle body is prone to serious deformation. In addition, the floor longitudinal beam will lose stability and rotate during the collision, causing large intrusion of the front enclosure and components invading the passenger compartment, causing direct damage to the occupants. Utility Model Content

[0004] The utility model aims to provide a vehicle body front structure and a vehicle, aiming to solve the technical problems in the prior art that the force transmission path between the cabin longitudinal beam and the floor longitudinal beam is not smooth and the floor longitudinal beam becomes unstable when the vehicle collides head-on.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a vehicle body front structure, including:

[0006] Engine room longitudinal beams;

[0007] An A-pillar located outside and rearward of the cabin longitudinal beam;

[0008] A force transmission structure connected between the cabin longitudinal beam and the A-pillar; and

[0009] A floor longitudinal beam, a front end of which is connected to the cabin longitudinal beam and / or the force transmission structure.

[0010] In a possible implementation, the force transmission structure is arranged obliquely relative to the front-rear direction of the vehicle body, and the front end of the force transmission structure is connected to the rear end of the cabin longitudinal beam, and the rear end of the force transmission structure is connected to the lower section of the A-pillar.

[0011] In some embodiments, the force transmission structure and the cabin longitudinal beam are an integrated structure.

[0012] In some embodiments, a first cavity is formed inside the force transmission structure.

[0013] In some embodiments, a second cavity is formed inside the cabin longitudinal beam, and the second cavity is connected to the first cavity.

[0014] In some embodiments, the upper plate surface of the force transmission structure is inclined upward from front to back; and the lower plate surface of the force transmission structure is inclined downward from front to back.

[0015] In a possible implementation, the floor longitudinal beam includes:

[0016] A floor longitudinal beam body extending along the front-rear direction of the vehicle body; and

[0017] The front section of the floor longitudinal beam has a rear end connected to the front end of the floor longitudinal beam body, and a front end extending outward and upward and connected to the cabin longitudinal beam and / or the force transmission structure.

[0018] In a possible implementation, the vehicle body front structure further includes:

[0019] The front cross beam is extended along the left-right direction of the vehicle body, and the outer end is connected to the inner side surface of the cabin longitudinal beam.

[0020] In a possible implementation, the vehicle body front structure further includes:

[0021] The sill beam is extended along the front-rear direction of the vehicle body; the front section of the sill beam is connected to the lower section of the A-pillar.

[0022] The beneficial effect of the front vehicle body structure provided by the utility model is that: compared with the prior art, in the front vehicle body structure of the utility model, the cabin longitudinal beam is connected to the A-pillar through a force transmission structure, and the cabin longitudinal beam is also connected to the floor longitudinal beam. The force transmission structure serves as the main force transmission path. When the vehicle collides head-on, the collision force exerted on the cabin longitudinal beam is transmitted outwardly and upward to the A-pillar through the force transmission structure, thereby avoiding serious deformation of the vehicle body, and reducing the collision force transmitted from the cabin longitudinal beam to the floor longitudinal beam, thereby increasing the deformation resistance of the floor longitudinal beam and avoiding unstable rotation of the floor longitudinal beam.

[0023] The utility model also provides a vehicle, comprising the above-mentioned vehicle body front structure.

[0024] The vehicle provided by the utility model adopts the above-mentioned front body structure, which can increase the outward and upward force transmission path of the front body when the vehicle has a head-on collision, reduce the deformation of the front body and the front enclosure intrusion, and improve the collision performance of the entire vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 A schematic diagram of the front structure of the vehicle body provided by the embodiment of the utility model Figure 1 ;

[0027] Figure 2 A schematic diagram of the front structure of the vehicle body provided by the embodiment of the utility model Figure 2 .

[0028] In the figure: 1. Cabin longitudinal beam; 2. A-pillar; 3. Force transmission structure; 4. Floor longitudinal beam; 41. Floor longitudinal beam body; 42. Floor longitudinal beam front section; 5. Front cross beam; 6. Door sill beam. DETAILED DESCRIPTION

[0029] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0030] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or indirectly on the other element. The terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "several" is two or more, unless otherwise clearly and specifically defined.

[0031] It should be noted that the directions or positional relationships indicated by "front", "rear", "inside", "outside", "up" and "down" in this embodiment are based on the direction of the vehicle itself, where the head of the vehicle represents "front", the rear of the vehicle represents "rear", the top of the vehicle represents "up", and the bottom of the vehicle represents "down", the "inside" side refers to the side facing inside the cab, and the "outside" side refers to the side facing outside the cab.

[0032] In addition, the front and rear direction of the vehicle body defined in the embodiments of the present invention refers to the front and rear direction of the forward direction of the vehicle during driving, the left and right direction of the vehicle body defined refers to the left and right direction of the forward direction of the vehicle during driving, and the up and down direction of the vehicle body defined refers to the up and down direction of the forward direction of the vehicle during driving.

[0033] Please also read Figure 1 and Figure 2Now, the vehicle body front structure provided by the utility model is described. The vehicle body front structure includes a cabin longitudinal beam 1, an A-pillar 2, a force transmission structure 3 and a floor longitudinal beam 4. The cabin longitudinal beam 1 is extended along the front-to-back direction of the vehicle body; the A-pillar 2 is located outside and rearward of the cabin longitudinal beam 1; the force transmission structure 3 is connected between the cabin longitudinal beam 1 and the A-pillar 2; the floor longitudinal beam 4 is extended along the front-to-back direction of the vehicle body, and the front end is connected to the cabin longitudinal beam 1 and / or the force transmission structure 3.

[0034] The cabin longitudinal beam 1 is extended in the front-to-rear direction of the vehicle body; the A-pillar 2 is located outside and rearward of the cabin longitudinal beam 1, and partially extends in the up-down direction of the vehicle body. The A-pillar 2 defined in this embodiment can be understood as the lower section of the A-pillar. The floor longitudinal beam 4 is located behind the cabin longitudinal beam 1. Due to the limitation of the assembly position, in the up-down direction of the vehicle body, the cabin longitudinal beam 1 needs to be higher than the floor longitudinal beam 4. Therefore, the front section of the floor longitudinal beam 4 is lifted upward and deflected outward, so as to be connected to the cabin longitudinal beam 1 and / or the force transmission structure 3.

[0035] The cabin longitudinal beam 1, the A-pillar 2 and the floor longitudinal beam 4 can adopt the common structure in the prior art. The present embodiment does not limit the specific structure of the cabin longitudinal beam 1, the A-pillar 2 and the floor longitudinal beam 4, as long as the existing positional relationship is met and a force transmission structure 3 is provided between the cabin longitudinal beam 1 and the A-pillar 2.

[0036] The force transmission structure 3 can be a part of the cabin longitudinal beam 1 and be an integrated structure with the cabin longitudinal beam 1, or a part of the A-pillar 2 and be an integrated structure with the A-pillar 2, or a separate structure connected between the cabin longitudinal beam 1 and the A-pillar 2. It should be noted that the force transmission structure 3 is connected to the lower section of the A-pillar, and the force transmission structure 3 can be connected to any position of the lower section of the A-pillar.

[0037] Since the A-pillar 2 is located outside and rearward of the cabin longitudinal beam 1, the force transmission structure 3 not only forms a force transmission channel along the front-to-rear direction of the vehicle body when the vehicle collides head-on, but also transmits the collision force exerted on the A-pillar 2 or the side panel to the cabin longitudinal beam 1 when the vehicle collides sideways. In other words, when the vehicle collides sideways, the force transmission structure 3 can also form a force transmission channel along the left-right direction of the vehicle body, thereby improving the vehicle's anti-deformation performance during side collision.

[0038] As for the whole vehicle, the front body structure in this embodiment has two groups, that is, the whole vehicle has two groups of cabin longitudinal beams 1, two groups of A-pillars 2, two groups of force transmission structures 3 and two groups of floor longitudinal beams 4.

[0039] Compared with the prior art, the vehicle body front structure provided by the utility model has a cabin longitudinal beam 1 connected to the A-pillar 2 through a force transmission structure 3, and the cabin longitudinal beam 1 is also connected to the floor longitudinal beam 4. The force transmission structure 3 serves as a main force transmission path. When the vehicle collides head-on, the collision force exerted on the cabin longitudinal beam 1 is transmitted outwardly and upwardly to the A-pillar 2 through the force transmission structure 3, thereby avoiding serious deformation of the vehicle body. In addition, the collision force transmitted from the cabin longitudinal beam 1 to the floor longitudinal beam 4 can be reduced, thereby increasing the deformation resistance of the floor longitudinal beam 4 and avoiding unstable rotation of the floor longitudinal beam 4.

[0040] In some embodiments, the A-pillar 2 may be Figure 1 and Figure 2 The structure shown, see Figure 1 and Figure 2 The force transmission structure 3 is inclined relative to the front and rear directions of the vehicle body, and the force transmission structure 3 is inclined outward from front to rear, the front end of the force transmission structure 3 is connected to the rear end of the cabin longitudinal beam 1, and the rear end of the force transmission structure 3 is connected to the lower section of the A-pillar 2.

[0041] Since the engine is to be installed on the cabin longitudinal beam 1 and the front suspension has to be avoided, the force transmission structure 3 is tilted and distributed, which can minimize the space occupied by the force transmission structure 3, optimize the layout of components between the cabin longitudinal beam 1 and the A-pillar 2, and avoid interference with other components at the cabin longitudinal beam 1.

[0042] In addition, the force transmission structure 3 is distributed at an inclination, so that when the vehicle has a head-on collision, the collision force is transmitted outward and backward, not forward and inward; when the vehicle has a side collision, the collision force is transmitted inward and forward, not outward.

[0043] It should be noted that the force transmission structure 3 is inclined, and can be inclined in a straight line or in an arc shape. In this embodiment, the front end of the floor longitudinal beam 4 is connected to the inclined inner surface of the force transmission structure 3 .

[0044] In some embodiments, the force transmission structure 3 and the cabin longitudinal beam 1 may be connected by Figure 1 and Figure 2 The structure shown, see Figure 1 and Figure 2 The force transmission structure 3 and the cabin longitudinal beam 1 are an integrated structure. It can be considered that the force transmission structure 3 is a part of the cabin longitudinal beam 1. The front section of the cabin longitudinal beam 1 is extended along the front and rear direction of the vehicle body, and the rear section of the cabin longitudinal beam 1 (i.e., the force transmission structure 3) extends backward and outward and is connected to the lower section of the A-pillar 2.

[0045] The force transmission structure 3 and the cabin longitudinal beam 1 are an integrated structure, which can reduce welding connections, facilitate design and production, and improve assembly efficiency. In addition, the integrated structure reduces the number of parts, simplifies management, improves management efficiency, and optimizes the spatial layout of the cabin longitudinal beam 1; moreover, it can also reduce reinforcing structures such as reinforcing plates and structural rubber blocks to reduce weight costs.

[0046] In some embodiments, a first cavity is formed inside the force transmission structure 3. The first cavity penetrates the force transmission structure 3 along the front-rear direction of the vehicle body. In other words, the force transmission structure 3 is a hollow tubular structure. Specifically, the force transmission structure 3 can be regarded as a square tube structure formed by splicing multiple plates, and the multiple plates are spliced ​​to enclose the first cavity, and the vertical cross-section of the first cavity is similar to a rectangle.

[0047] The first cavity is a vibration-absorbing and energy-absorbing collapsing cavity, which can absorb vibration energy and collision energy and reduce noise transmission. Moreover, when the vehicle collides, it can also collapse and deform to avoid serious deformation of the force transmission structure 3.

[0048] See also Figure 1 and Figure 2 On the basis of the above embodiment, a second cavity is formed inside the cabin longitudinal beam 1, and the second cavity is connected to the first cavity. The second cavity penetrates along the front-to-back direction of the cabin longitudinal beam 1, and the rear end of the second cavity is connected to the front end of the first cavity.

[0049] If the cabin longitudinal beam 1 and the force transmission structure 3 are an integrated structure, and the force transmission structure 3 is regarded as a part of the cabin longitudinal beam 1, then the cabin longitudinal beam 1 is formed by splicing a plurality of plates, and the vertical cross-section of the second cavity enclosed after the splicing is similar to a rectangle, that is, the vertical cross-section of the first cavity and the vertical cross-section of the second cavity are both similar to rectangles, except that the first cavity is passed through along the front-to-back direction of the vehicle body, and the second cavity is passed through at an angle relative to the front-to-back direction of the vehicle body. In addition, the inner volume of the first cavity may be different from the inner volume of the second cavity. In order to increase the force transmission path and the ability of the first cavity to collapse and deform, the volume of the first cavity is preferably larger than the volume of the second cavity.

[0050] If the cabin longitudinal beam 1 and the force transmission structure 3 are split structures, the cabin longitudinal beam 1 itself is formed by a plurality of plates spliced ​​together in a ring shape, and the plurality of plates are spliced ​​together to enclose a second cavity, and the vertical cross-section of the second cavity is similar to a rectangle.

[0051] See also Figure 1 and Figure 2On the basis of the above-mentioned implementation mode, specifically, the front end of the upper panel of the force transmission structure 3 is connected to the rear end of the upper surface of the cabin longitudinal beam 1, the rear end of the upper panel of the force transmission structure 3 is connected to the front side surface and the inner side surface of the A-pillar 2, and the upper panel of the force transmission structure 3 is inclined upward from front to rear; the front end of the lower panel of the force transmission structure 3 is connected to the rear end of the lower panel of the cabin longitudinal beam 1, the rear end of the lower panel of the force transmission structure 3 is connected to the front side surface and the inner side surface of the A-pillar 2, and the lower panel of the force transmission structure 3 is inclined downward from front to rear.

[0052] The rear ends of the upper plate surface and the lower plate surface of the force transmission structure 3 are both folded surfaces, and the folded surfaces have an angle, and the position of the angle is just connected to the intersection of the front plate surface and the side plate surface of the A-pillar 2.

[0053] The upper and lower plate surfaces of the force transmission structure 3 are both inclined, and the inclination direction of the upper plate surface is opposite to that of the lower plate surface. That is to say, in the up and down directions of the vehicle body, the height of the force transmission structure 3 gradually increases from front to rear, and the height of the first cavity also gradually increases from front to rear, and the first cavity is in a backward expansion shape. In this way, the force transmission path of the force transmission structure 3 can be increased, and the collision force can be dispersed backward in an expansion shape, and the collision force can be transmitted upward and downward through the A-pillar 2 at the same time, thereby increasing the decomposition of the collision force; and it can also increase the connection area between the force transmission structure 3 and the A-pillar 2, thereby improving the connection strength.

[0054] In addition, the height of the first cavity gradually increases from front to back, and the width of the first cavity can also gradually increase from front to back. The force transmission structure 3 can be regarded as a conical block structure, except that the force transmission structure 3 is tilted outward from front to back.

[0055] In some embodiments, the floor longitudinal beam 4 can be made of Figure 1 and Figure 2 The structure shown, see Figure 1 and Figure 2 The floor longitudinal beam 4 includes a floor longitudinal beam body 41 and a floor longitudinal beam front section 42. The floor longitudinal beam body 41 is extended along the front-rear direction of the vehicle body; the rear end of the floor longitudinal beam front section 42 is connected to the front end of the floor longitudinal beam body 41, and the front end extends outward and upward and is connected to the cabin longitudinal beam 1 and / or the force transmission structure 3.

[0056] Figure 1 and Figure 2 In the embodiment, the front end of the floor longitudinal beam front section 42 is connected to the inclined inner side surface of the force transmission structure 3.

[0057] The floor longitudinal beam body 41 is arranged on the front floor to increase the self strength of the front floor. The floor longitudinal beam front section 42 is used to connect the floor longitudinal beam body 41 and the force transmission structure 3. The floor longitudinal beam front section 42 is connected to the force transmission structure 3, and is not directly connected to the main part of the cabin longitudinal beam 1.

[0058] Since the cabin longitudinal beam 1 needs to install the engine and avoid the front suspension, the installation position of the cabin longitudinal beam 1 is relatively high, while the floor longitudinal beam 4 supports the front floor and is installed at a relatively low position. Due to the limitation of the assembly position, the height of the front section 42 of the floor longitudinal beam is raised and tilted outward to meet the connection requirements with the cabin longitudinal beam 1.

[0059] The floor longitudinal beam body 41 is connected to the force transmission structure 3 through the floor longitudinal beam front section 42. The force transmission structure 3 and the floor longitudinal beam front section 42 serve as a force transmission path. When the vehicle collides head-on, the collision force received by the cabin longitudinal beam 1 is transmitted outward and upward to the A-pillar 2 through the force transmission structure 3, thereby avoiding serious deformation of the vehicle body. The collision force transmitted from the cabin longitudinal beam 1 to the floor longitudinal beam body 41 can also be reduced, thereby increasing the deformation resistance of the floor longitudinal beam 4 and avoiding unstable rotation of the floor longitudinal beam 4.

[0060] In some embodiments, the front structure of the vehicle body can also be adopted as follows: Figure 1 and Figure 2 The structure shown, see Figure 1 and Figure 2 The front structure of the vehicle body further includes a front cross beam 5. The front cross beam 5 is extended along the left and right directions of the vehicle body, and the outer end is connected to the inner side surface of the cabin longitudinal beam 1.

[0061] As for the whole vehicle, the whole vehicle has two sets of cabin longitudinal beams 1, two sets of A-pillars 2, two sets of force transmission structures 3 and two sets of floor longitudinal beams 4. The front cross beam 5 connects the two sets of cabin longitudinal beams 1, that is, the left end of the front cross beam 5 is connected to the inner side of the left cabin longitudinal beam 1, that is, the right end of the front cross beam 5 is connected to the inner side of the right cabin longitudinal beam 1. The front cross beam 5 is located in front of the front section 42 of the floor longitudinal beam.

[0062] Adding a front cross beam 5 between the two sets of cabin longitudinal beams 1 can, on the one hand, enhance the connection strength and torsional stiffness of the cabin frame, and increase the stability between the two sets of cabin longitudinal beams 1 in the left-right direction of the vehicle body; on the other hand, when the vehicle collides sideways, the front cross beam 5 can also serve as a force transmission path to disperse the collision force to the other side of the vehicle, thereby reducing side collision deformation.

[0063] Specifically, the front cross beam 5 has a cavity that penetrates along the left-right direction of the vehicle body, that is, the front cross beam is also a tubular structure. In order to facilitate welding operations on the front cross beam 5, the front cross beam 5 is preferably a square tubular structure.

[0064] In some embodiments, the front structure of the vehicle body can also be adopted as follows: Figure 1 and Figure 2 The structure shown, see Figure 1 and Figure 2 The front structure of the vehicle body also includes a sill beam 6, which is extended along the front and rear directions of the vehicle body; the front section of the sill beam 6 is connected to the lower section of the A-pillar 2.

[0065] Since the force transmission structure 3 is connected to the lower section of the A-pillar 2, when the vehicle collides head-on, the collision force can be dispersed and transmitted upward to the upper section of the A-pillar 2 and downward to the door sill beam 6 through the force transmission structure 3 and the A-pillar 2, further increasing the force transmission path, quickly decomposing the collision force, and thus reducing the deformation of the front part of the vehicle body.

[0066] Based on the same inventive concept, an embodiment of the present application also provides a vehicle, comprising the above-mentioned front vehicle body structure.

[0067] As for the whole vehicle, the front structure of the vehicle body in this embodiment has two groups, that is, the whole vehicle has two groups of cabin longitudinal beams 1, two groups of A-pillars 2, two groups of force transmission structures 3 and two groups of floor longitudinal beams 4. In addition, the above-mentioned front cross beam 5 can be arranged between the two groups of cabin longitudinal beams 1.

[0068] The cabin longitudinal beam 1, A-pillar 2 and floor longitudinal beam 4 in this embodiment can adopt the structure and position distribution commonly used in the prior art. The floor longitudinal beam 4 is located behind the cabin longitudinal beam 1. Limited by the assembly position, the cabin longitudinal beam 1 needs to be higher than the floor longitudinal beam 4 in the up and down direction of the vehicle body. Therefore, the front section of the floor longitudinal beam 4 is lifted upward and deflected outward, so as to be connected to the cabin longitudinal beam 1 and / or the force transmission structure 3.

[0069] Since the A-pillar 2 is located outside and rearward of the cabin longitudinal beam 1, the force transmission structure 3 not only forms a force transmission channel along the front-to-rear direction of the vehicle body when the vehicle collides head-on, but also transmits the collision force exerted on the A-pillar 2 or the side panel to the cabin longitudinal beam 1 when the vehicle collides sideways. In other words, when the vehicle collides sideways, the force transmission structure 3 can also form a force transmission channel along the left-right direction of the vehicle body, thereby improving the vehicle's anti-deformation performance during side collision.

[0070] The vehicle provided by the utility model adopts the above-mentioned front body structure, which can increase the outward and upward force transmission path of the front body when the vehicle has a head-on collision, reduce the deformation of the front body and the front intrusion, and improve the collision performance of the whole vehicle; when the vehicle has a side collision, it can also improve the deformation resistance of the vehicle during side collision.

[0071] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A vehicle body front structure, characterized in that: include: Cabin longitudinal beam (1); An A-pillar (2) located outside and behind the cabin longitudinal beam (1); A force transmission structure (3) connected between the cabin longitudinal beam (1) and the A-pillar (2); as well as A floor longitudinal beam (4), the front end of which is connected to the cabin longitudinal beam (1) and / or the force transmission structure (3).

2. The vehicle body front structure according to claim 1, characterized in that: The force transmission structure (3) is arranged obliquely relative to the front-rear direction of the vehicle body, and the front end of the force transmission structure (3) is connected to the rear end of the cabin longitudinal beam (1), and the rear end of the force transmission structure (3) is connected to the lower section of the A-pillar (2).

3. The vehicle body front structure according to claim 2, characterized in that: The force transmission structure (3) and the cabin longitudinal beam (1) are an integrated structure.

4. The vehicle body front structure according to claim 2, characterized in that: A first cavity is formed inside the force transmission structure (3).

5. The vehicle body front structure according to claim 4, characterized in that: A second cavity is formed inside the cabin longitudinal beam (1), and the second cavity is communicated with the first cavity.

6. The vehicle body front structure according to claim 4, characterized in that: The upper plate surface of the force transmission structure (3) is inclined upward from front to back; and the lower plate surface of the force transmission structure (3) is inclined downward from front to back.

7. The vehicle body front structure according to claim 1, characterized in that: The floor longitudinal beam (4) comprises: A floor longitudinal beam body (41) extending along the front-rear direction of the vehicle body; and The front section of the floor longitudinal beam (42) has a rear end connected to the front end of the floor longitudinal beam body (41), and the front end extends outward and upward and is connected to the cabin longitudinal beam (1) and / or the force transmission structure (3).

8. The vehicle body front structure according to claim 1, characterized in that: The vehicle body front structure also includes: The front cross beam (5) is extended in the left-right direction of the vehicle body, and the outer end is connected to the inner side surface of the cabin longitudinal beam (1).

9. The vehicle body front structure according to claim 1, characterized in that: The vehicle body front structure also includes: A door sill beam (6) is extended along the front-rear direction of the vehicle body; the front section of the door sill beam (6) is connected to the lower section of the A-pillar (2).

10. A vehicle, characterized in that: The vehicle body front structure comprises any one of claims 1-9.

Images