Front body structure and automobile

Abstract

The present disclosure relates to a front vehicle body structure and a car, and belongs to the field of automobiles. The front vehicle body structure includes: a front bumper, an energy absorption box, an energy absorption box connecting plate, a first front longitudinal beam, and a gusset member. The front bumper extends in a first direction. One end of the energy absorption box is connected to the end of the front bumper. The energy absorption box connecting plate has a first surface and a second surface that are arranged opposite to each other, and the first surface of the energy absorption box connecting plate is connected to the other end of the energy absorption box. The first front longitudinal beam extends in a second direction, and the first front longitudinal beam is connected to the second surface of the energy absorption box connecting plate. The gusset member has a cavity, one end of the gusset member is connected to the second surface of the energy absorption box connecting plate, and the other end of the gusset member is connected to the first front longitudinal beam. Due to the existence of the gusset member, on the basis of the energy absorption of the energy absorption box, the gusset member will also absorb part of the energy, further reducing the load force transmitted to the first front longitudinal beam, and increasing the energy absorption effect of the front vehicle body structure.

Description

Technical Field

[0001] The present disclosure relates to the field of automobiles, and in particular to a front structure of a vehicle body and an automobile. Background Art

[0002] The front structure of a car body can absorb energy when the car collides, reduce the load force transmitted to the passenger compartment, and reduce the possibility of injury to the passengers.

[0003] The front structure of the vehicle body includes the front bumper, the front longitudinal beam, and the energy absorption box connecting the bumper and the front longitudinal beam. The extension directions of the front bumper and the front longitudinal beam are perpendicular to each other. When the car collides, the front bumper transfers the load force to the energy absorption box. After the energy absorption box collapses and deforms, the load force is reduced, and then the load force is transferred to the front longitudinal beam, which then transfers the load force to the passenger compartment.

[0004] Although the energy absorption box can absorb part of the load force after collapse and deformation, thereby reducing the load force transmitted to the passenger compartment, the energy absorption effect of the front structure of the car body is still not good enough, which is easy to cause injury to the driver in the event of a collision. Summary of the invention

[0005] The embodiment of the present disclosure provides a front body structure and a car, which improves the energy absorption effect of the front body structure of the car. The technical solution is as follows:

[0006] The present disclosure provides a vehicle front structure, the vehicle front structure comprising:

[0007] a front bumper extending along a first direction;

[0008] An energy absorption box, one end of which is connected to the end of the front bumper;

[0009] An energy absorbing box connecting plate, having a first surface and a second surface arranged opposite to each other, wherein the first surface is connected to the other end of the energy absorbing box;

[0010] a first front longitudinal beam extending along a second direction, wherein the first front longitudinal beam is connected to the second surface;

[0011] A gusset member having a cavity, one end of the gusset member being connected to the second surface, the other end of the gusset member being connected to the first front longitudinal beam, and an orthographic projection of one end of the gusset member on the second surface at least partially overlapping with an orthographic projection of the other end of the energy absorption box on the second surface;

[0012] The second direction intersects with the first direction, and the second direction is the length direction of the car.

[0013] In an implementation of the embodiment of the present disclosure, the second direction is perpendicular to the second surface, and the angle bracing member includes:

[0014] Two connecting plates, one end of each connecting plate is fixed to the side surface of the first front longitudinal beam, the other end of each connecting plate is fixed to the second surface of the energy absorption box connecting plate, and the end surfaces of both ends of each connecting plate are perpendicular to each other;

[0015] A fixing plate connected to the two connecting plates at the same time;

[0016] The two connecting plates and the fixing plate form a U-shaped angle bracing member, and the opening of the U-shaped angle bracing member faces the middle of the front bumper.

[0017] In one implementation of the embodiment of the present disclosure, the connecting plate is a trapezoidal plate, the two waists of the trapezoidal plate are perpendicular to each other, the two waists of the trapezoidal plate are respectively connected to the side of the first front longitudinal beam and the second surface of the energy absorption box connecting plate, and there is a first gap between the upper bottom edge of the trapezoidal plate, the side of the first front longitudinal beam and the second surface of the energy absorption box connecting plate.

[0018] In one implementation of the embodiment of the present disclosure, the front structure of the vehicle body further includes:

[0019] A second front longitudinal beam is connected to the second surface of the energy absorption box connecting plate, and the second front longitudinal beam and the first front longitudinal beam are arranged at intervals along the first direction.

[0020] In an implementation of the embodiment of the present disclosure, the second front longitudinal beam includes:

[0021] An extended longitudinal beam extending along a fourth direction, one end of the extended longitudinal beam being connected to the energy absorption box connecting plate;

[0022] A second front longitudinal beam body extending along the second direction, wherein the second front longitudinal beam body is connected to the other end of the extended longitudinal beam;

[0023] The fourth direction is perpendicular to the first direction and intersects with the second direction.

[0024] In one implementation of the embodiment of the present disclosure, the energy absorption box connecting plate includes:

[0025] A connecting plate body, connected to the energy absorption box, the first front longitudinal beam and the angle bracing member respectively;

[0026] The ear plates are respectively connected to the outer side edge and the upper side edge of the connecting plate body, and the ear plates are also connected to the second front longitudinal beam.

[0027] In an implementation of the embodiment of the present disclosure, the orthographic projection of the second front longitudinal beam on the second surface of the energy absorption box connecting plate and the orthographic projection of the angle bracing member on the second surface of the energy absorption box connecting plate are independent of each other.

[0028] In an implementation of the embodiment of the present disclosure, the orthographic projection of the second front longitudinal beam on the second surface of the energy absorption box connecting plate and the orthographic projection of the energy absorption box on the second surface of the energy absorption box connecting plate are independent of each other.

[0029] In an implementation of the embodiment of the present disclosure, the orthographic projection of the second front longitudinal beam on the first plane and the orthographic projection of the first front longitudinal beam on the first plane do not overlap at most in part;

[0030] The first plane is perpendicular to the first direction.

[0031] On the other hand, an embodiment of the present disclosure provides a car, comprising any one of the above-mentioned front vehicle body structures.

[0032] The technical solution provided by the embodiments of the present disclosure has the following beneficial effects:

[0033] In the disclosed embodiment, the front bumper, the energy absorption box, the energy absorption box connecting plate, the first front longitudinal beam and the angle brace member together constitute the front vehicle body structure in this application. The energy absorption box is located between the front bumper and the first front longitudinal beam. When the car collides, the front bumper is hit, and the front bumper transfers the load force to the energy absorption box, and the energy absorption box collapses to absorb energy, thereby reducing the load force. Since the angle brace member connects the energy absorption box connecting plate and the first front longitudinal beam, and the orthographic projection of one end of the angle brace structure on the second surface is at least partially overlapped with the orthographic projection of the other end of the energy absorption box on the second surface, the energy absorption box directly transfers part of the load force to the first front longitudinal beam, and the energy absorption box transfers another part of the load force to the angle brace member, and the angle brace member can also absorb part of the energy, thereby reducing the load force. The angle brace member then transfers the load force to the first front longitudinal beam. Due to the existence of the angle brace member, on the basis of the energy absorption of the energy absorption box, the angle brace member will also absorb part of the energy, further reducing the load force transferred to the first front longitudinal beam, thereby increasing the energy absorption effect of the front vehicle body structure. Thus, the load force transmitted from the first front longitudinal beam to the passenger compartment is reduced, reducing the possibility of injury to the passenger. At the same time, the load force transmitted to the first front longitudinal beam is reduced, reducing the possibility of deformation of the first front longitudinal beam due to excessive load force, and avoiding the deformation of the first front longitudinal beam affecting the safety of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0035] Figure 1 is a structural schematic diagram of a vehicle body front structure provided by an embodiment of the present disclosure;

[0036] Figure 2 is a top view of a vehicle body front structure provided by an embodiment of the present disclosure;

[0037] Figure 3 yes Figure 2 Schematic diagram of the cross section of section AA;

[0038] Figure 4 is a left side view of a vehicle body front structure provided by an embodiment of the present disclosure;

[0039] Figure 5 yes Figure 2 Schematic cross-section of the middle BB section;

[0040] Figure 6 It is a top view of a corner bracing structure provided by an embodiment of the present disclosure. DETAILED DESCRIPTION

[0041] In order to make the objectives, technical solutions and advantages of the present disclosure more clear, the embodiments of the present disclosure will be further described in detail below with reference to the accompanying drawings.

[0042] Figure 1 Schematic diagram of a front structure of a vehicle body provided by an embodiment of the present disclosure. Figure 1 The front structure of the vehicle body includes: a front bumper 10, an energy absorption box 20, an energy absorption box connecting plate 30, a first front longitudinal beam 40 and a corner bracing member 50.

[0043] The front bumper 10 extends along a first direction a. One end of the energy absorption box 20 is connected to the end of the front bumper 10. The energy absorption box connecting plate 30 has a first surface 31 and a second surface 32 arranged opposite to each other, and the first surface 31 of the energy absorption box connecting plate 30 is connected to the other end of the energy absorption box 20. The first front longitudinal beam 40 extends along a second direction b, and the first front longitudinal beam 40 is connected to the second surface 32 of the energy absorption box connecting plate 30. The angle bracing member 50 has a cavity, one end of the angle bracing member 50 is connected to the second surface 32 of the energy absorption box connecting plate 30, and the other end of the angle bracing member 50 is connected to the first front longitudinal beam 40, and the orthographic projection of one end of the angle bracing member 50 on the second surface 32 at least partially overlaps with the orthographic projection of the other end of the energy absorption box 20 on the second surface 32. Among them, the second direction b intersects with the first direction a, and the second direction b is the length direction of the car.

[0044] In the disclosed embodiment, the front bumper 10, the energy absorption box 20, the energy absorption box connecting plate 30, the first front longitudinal beam 40 and the angle brace member 50 together constitute the front vehicle body structure in this application. The energy absorption box 20 is located between the front bumper 10 and the first front longitudinal beam 40. When the car collides, the front bumper 10 is hit, and the front bumper 10 transfers the load force to the energy absorption box 20, and the energy absorption box 20 collapses to absorb energy and reduce the load force. Since the angle brace member 50 connects the energy absorption box connecting plate 30 and the first front longitudinal beam 40, and the orthographic projection of one end of the angle brace member 50 on the second surface 32 is at least partially overlapped with the orthographic projection of the other end of the energy absorption box 20 on the second surface 32, the energy absorption box 20 directly transfers a part of the load force to the first front longitudinal beam 40, and the energy absorption box 20 transfers another part of the load force to the angle brace member 50, and the angle brace member 50 can also absorb part of the energy to reduce the load force. The angle brace member 50 then transfers the load force to the first front longitudinal beam 40. Due to the existence of the angle bracing member 50, on the basis of the energy absorption of the energy absorption box 20, the angle bracing member 50 will also absorb part of the energy, further reducing the load force transmitted to the first front longitudinal beam 40, and increasing the energy absorption effect of the front structure of the vehicle body. In this way, the load force transmitted from the first front longitudinal beam 40 to the passenger compartment is reduced, reducing the possibility of injury to the passenger. At the same time, the load force transmitted to the first front longitudinal beam 40 is reduced, reducing the possibility of deformation of the first front longitudinal beam 40 due to excessive load force, and ensuring the safety of the first front longitudinal beam 40.

[0045] In the disclosed embodiment, the front bumper 10 of the automobile is a safety device that absorbs and mitigates external load forces and protects the front part of the automobile body. That is, the front bumper 10 can also absorb energy when the automobile is hit, reduce the load force transmitted to the subsequent devices, ensure the safety of the automobile, and reduce the possibility of injury to the occupants. At the same time, when the automobile collides with pedestrians, the front bumper 10 can also play a certain role in protecting pedestrians and reduce the possibility of injury to pedestrians.

[0046] In the disclosed embodiment, the front bumper 10 is a columnar structure having a cavity. When the front bumper 10 is impacted, the outer wall of the front bumper 10 will shrink into the cavity to absorb part of the energy, thereby reducing the load force.

[0047] like Figure 1 As shown, the other end of the angle bracing member 50 is connected to the middle portion of the first front longitudinal beam 40 .

[0048] In the disclosed embodiment, the first front longitudinal beam 40 is close to the middle of the vehicle body.

[0049] like Figure 1 As shown, the front bumper 10 includes a front bumper extension 101 and a front bumper body 102. In a first direction a, the front bumper extension 101 and the front bumper body 102 are sequentially connected, and the energy absorption box 20 is connected to the front bumper extension 101. Dividing the front bumper 10 into the front bumper extension 101 and the front bumper body 102 facilitates manufacturing, and at the same time, the front bumper extension 101 is connected to the energy absorption box 20, which is more convenient. Both the front bumper extension 101 and the front bumper body 102 have cavities to ensure the energy absorption effect of the front bumper 10.

[0050] In the disclosed embodiment, the front bumper extension 101 and the front bumper main body 102 are manufactured in an integrated manner, that is, the front bumper extension 101 and the front bumper main body 102 are manufactured as a whole, thereby increasing the strength of the front bumper 10 .

[0051] In other implementations, the front bumper extension 101 and the front bumper body 102 may be connected by welding, and the front bumper extension 101 and the front bumper body 102 may be welded by lap welding or butt welding, which is not limited in the present disclosure.

[0052] In other implementations, the front bumper extension 101 and the front bumper main body 102 may also be connected by bolts or other means. The front bumper extension 101 and the front bumper main body 102 have corresponding through holes. The bolts pass through the connected through holes, and then a nut is screwed on the other end of the bolt to connect the front bumper extension 101 and the front bumper main body 102 by the bolts.

[0053] In the disclosed embodiment, the energy absorption box 20 is arranged between the front bumper 10 and the first front longitudinal beam 40. When the front collision of the vehicle occurs, the load force is transmitted to the energy absorption box 20 through the front bumper 10. The energy absorption box 20 has a cavity, which causes the energy absorption box 20 to be compressed and absorb part of the energy, that is, to collapse and absorb energy, thereby reducing the load force transmitted to the subsequent device, ensuring the safety of the vehicle and reducing the possibility of injury to the occupants.

[0054] In the embodiment of the present disclosure, the energy absorption box 20 has an energy absorption cavity. The energy absorption box 20 is a cylindrical structure, and the inner cavity of the cylindrical structure is the energy absorption cavity of the energy absorption box 20.

[0055] like Figure 1 As shown, the energy absorption box 20 is in the shape of a rectangular cylinder with a crush groove 201 at the corner of the rectangle. The crush groove 201 forms an inwardly concave groove structure on the surface of the rectangle. When the energy absorption box 20 is subjected to a load force, it shrinks inward at the crush groove 201, that is, the crush groove 201 guides the energy absorption box 20 to be gradually and stably compressed from the front end (the end connected to the front bumper 10) to the rear end (the end connected to the first front longitudinal beam 40), thereby better meeting the collision energy absorption requirements.

[0056] In the embodiment of the present disclosure, the collapse groove 201 is arranged at the corner of the cuboid, that is, one collapse groove 201 is located on two adjacent faces of the cuboid, so that the corner of the energy absorbing box 20 can achieve stable collapse.

[0057] In other implementations, the crush groove 201 may be located at other places of the energy absorption box 20 , which is not limited in the present disclosure.

[0058] In the embodiment of the present disclosure, one, two or more collapse grooves 201 may be arranged on the energy absorption box 20, and the present disclosure does not impose any limitation on this.

[0059] In the embodiment of the present disclosure, a crush groove 201 may be arranged at each corner of the energy absorbing box 20, or a crush rib 202 may be arranged only at one, two or more corners, and the present disclosure does not impose any limitation on this.

[0060] like Figure 1 As shown, the energy absorption box 20 is also provided with a crush rib 202, which forms an outwardly protruding boss on the surface of the cuboid. The crush rib 202 cooperates with the crush groove 201 to stably crush the main body of the energy absorption box 20, reduce the damage caused by the collision, and thus better meet the collision energy absorption requirements.

[0061] At the same time, the crush ribs 202 can increase the strength of the energy absorbing box 20 without increasing the weight of the energy absorbing box 20. That is, the crush ribs 202 and the crush grooves 201 cooperate to ensure the strength of the energy absorbing box 20 without weakening the buffering effect of the energy absorbing box 20, that is, the crushing energy absorbing effect of the energy absorbing box 20.

[0062] like Figure 1 As shown, the surface of the collapse rib 202 is elliptical, and the major axis of the ellipse is parallel to the first direction a. In other implementations, the major axis of the ellipse may also be arranged along other directions, and the present disclosure does not limit this.

[0063] In the embodiment of the present disclosure, one, two or more collapse ribs 202 may be arranged on the energy absorbing box 20, and the present disclosure does not impose any limitation on this.

[0064] In the embodiment of the present disclosure, the crush ribs 202 may be arranged on each surface of the energy absorbing box 20, or may be arranged on only one, two or more surfaces, and the present disclosure does not impose any limitation on this.

[0065] In the disclosed embodiment, when the crush grooves 201 are arranged on multiple surfaces of the energy absorbing box 20, the crush grooves 201 on adjacent surfaces are staggered, that is, the crush grooves 201 on adjacent surfaces are disconnected and not connected. When multiple crush ribs 202 are arranged on the energy absorbing box 20, the multiple crush ribs 202 are staggered, that is, the crush ribs 202 are arranged at intervals in the second direction b. This allows the energy absorbing box 20 to be gradually and stably crushed from the front end to the rear end.

[0066] In the disclosed embodiment, the energy absorption box 20 and the front bumper extension 101 are connected by welding to ensure the firmness of the connection between the energy absorption box 20 and the front bumper extension 101 .

[0067] In other implementations, the energy absorption box 20 and the front bumper extension 101 may be connected by bolts or other methods to facilitate disassembly and assembly of the front bumper 10 or the energy absorption box 20 .

[0068] In the embodiment of the present disclosure, the energy absorption box 20 and the energy absorption box connecting plate 30 are connected by welding to ensure the firmness of the connection between the energy absorption box 20 and the energy absorption box connecting plate 30 .

[0069] In other implementations, the energy absorption box 20 and the energy absorption box connecting plate 30 can be connected by bolts or other methods. When the energy absorption box 20 and the front bumper 10 are damaged, the energy absorption box 20 and the front bumper 10 can be disassembled and replaced without replacing the rear first front longitudinal beam 40, thereby reducing the cost of repairing the car and saving resources.

[0070] Figure 2 is a top view of a vehicle body front structure provided by an embodiment of the present disclosure. Figure 1 and Figure 2 The energy absorbing box 20 includes a first energy absorbing box 21 and a second energy absorbing box 22. The first energy absorbing box 21 is arranged opposite to the first front longitudinal beam 40, and one end of the angle bracing member 50 is arranged opposite to the second energy absorbing box 22. When the car is hit, both the first energy absorbing box 21 and the second energy absorbing box 22 can absorb energy, thereby increasing the energy absorbing effect. The relative arrangement is located on two surfaces of the same area of ​​the energy absorbing box connecting plate 30.

[0071] like Figure 1 and Figure 2As shown, the first energy absorbing box 21 is provided with a collapse groove 201 and a collapse rib 202 , and the second energy absorbing box 22 is provided with a collapse rib 202 .

[0072] In other implementations, the first energy absorbing box 21 may be provided with only the crush grooves 201 or only the crush ribs 202 , and the second energy absorbing box 22 may also be provided with the crush grooves 201 , which is not limited in the present disclosure.

[0073] Of course, in other implementations, one or more energy absorption boxes 20 may also be arranged at the front structure of the vehicle body, and the present disclosure does not limit this.

[0074] Figure 3 yes Figure 2 Schematic diagram of the cross section of section AA. Figure 3 The first energy absorbing box 21 and the second energy absorbing box 22 are spaced apart to avoid contact between the first energy absorbing box 21 and the second energy absorbing box 22 during collapse, thereby increasing the load force in the first direction.

[0075] Participate again Figure 1 and Figure 2 The front structure of the vehicle body further includes: a second front longitudinal beam 60. The second front longitudinal beam 60 is connected to the second surface 32 of the energy absorption box connecting plate 30, the second front longitudinal beam 60 and the first front longitudinal beam 40 are arranged at intervals along the first direction a, and the connection between the angle bracing member 50 and the energy absorption box connecting plate 30 is located between the second front longitudinal beam 60 and the first front longitudinal beam 40.

[0076] In the disclosed embodiment, a second front longitudinal beam 60 is arranged. When the vehicle collides, the energy absorption box 20 can transfer the load force to the second front longitudinal beam 60 and the first front longitudinal beam 40 respectively, thereby reducing the load force on a single front longitudinal beam, reducing the possibility of deformation of a single front longitudinal beam due to excessive load force, and ensuring the safety of the front longitudinal beam.

[0077] At the same time, the second front longitudinal beam 60 and the first front longitudinal beam 40 can support the frame of the vehicle at the same time to ensure the stability of the vehicle.

[0078] In the embodiment of the present disclosure, the number of front longitudinal beams can be determined according to the conditions of the vehicle, and the present disclosure does not impose any limitation on this.

[0079] In the disclosed embodiment, the first front longitudinal beam 40 is connected to the energy absorption box connecting plate 30 by means of bolts. When the energy absorption box 20 and the front bumper 10 are damaged, the energy absorption box connecting plate 30 can be removed, and then the energy absorption box 20 and the front bumper 10 can be removed for replacement without replacing the first front longitudinal beam 40, thereby reducing the cost of repairing the car and saving resources.

[0080] In other implementations, the energy absorption box connecting plate 30 and the first front longitudinal beam 40 may be connected by welding or other methods to ensure the firmness of the connection between the energy absorption box connecting plate 30 and the first front longitudinal beam 40 .

[0081] In the disclosed embodiment, the second front longitudinal beam 60 is connected to the energy absorption box connecting plate 30 by bolts 70. When the energy absorption box 20 and the front bumper 10 are damaged, the energy absorption box connecting plate 30 can be removed, and then the energy absorption box 20 and the front bumper 10 can be removed and replaced without replacing the second front longitudinal beam 60, thereby reducing the cost of repairing the car and saving resources.

[0082] In other implementations, the energy absorption box connecting plate 30 and the second front longitudinal beam 60 may be connected by welding or other methods to ensure the firmness of the connection between the second front longitudinal beam 60 and the energy absorption box connecting plate 30 .

[0083] In one implementation of the disclosed embodiment, the orthographic projection of the second front longitudinal beam 60 on the second surface of the crash box connecting plate 30 is independent of the orthographic projection of the gusset member 50 on the second surface of the crash box connecting plate 30 .

[0084] In this implementation, the angle bracing member 50 is not connected to the second front longitudinal beam 60. When the vehicle collides, the angle bracing member 50 will not transfer the load force to the second front longitudinal beam 60, thereby reducing the load force on the second front longitudinal beam 60 and the possibility of deformation of the second front longitudinal beam 60 due to excessive load force, thereby ensuring the safety of the second front longitudinal beam 60.

[0085] Figure 2 The arrow in the figure indicates the direction of load force transmission. When the front bumper 10 of the automobile is hit, the front bumper 10 is subjected to load force, and the front bumper 10 absorbs energy to reduce the load force; then the front bumper 10 transmits the load force to the first energy absorption box 21 and the second energy absorption box 22; the first energy absorption box 21 collapses and absorbs energy to transmit the load force to the first front longitudinal beam 40; the second energy absorption box 22 collapses and absorbs energy to transmit the load force to the angle brace member 50 and the second front longitudinal beam 60; the angle brace member 50 absorbs energy and then transmits the load force to the first front longitudinal beam 40; the first front longitudinal beam 40 and the second front longitudinal beam 60 then transmit the load force to the subsequent devices.

[0086] See also Figure 1 and Figure 2 The energy absorption box connecting plate 30 includes: a connecting plate body 300 and an ear plate 321. The connecting plate body 300 is respectively connected to the energy absorption box 20, the first front longitudinal beam 40 and the angle bracing member 50. The ear plate 321 is respectively connected to the outer side and the upper side of the connecting plate body 300, and the ear plate 321 is also connected to the second front longitudinal beam 60.

[0087] The connecting plate body 300 is connected to the energy absorbing box 20, the ear plate 321 is connected to the second front longitudinal beam 60, and there is no overlapping area between the connecting plate body 300 and the ear plate 321, so that the energy absorbing box 20 and the second front longitudinal beam 60 do not overlap, and the load force transmitted to the second front longitudinal beam 60 by the energy absorbing box 20 is less, thereby reducing the possibility of damage to the second front longitudinal beam 60.

[0088] See also Figure 1 and Figure 2 The connecting plate body 300 includes a front connecting plate 301 and a rear connecting plate 302 which are stacked. The front connecting plate 301 is connected to the energy absorption box 20, and the rear connecting plate 302 is respectively connected to the first front longitudinal beam 40 and the gusset member 50. The ear plate 321 extends along the third direction c and is connected to the rear connecting plate 302. The second front longitudinal beam 60 is connected to the ear plate 321, and the ear plate 321 is located on the outer side of the rear connecting plate 302. The first direction a, the second direction b and the third direction c are perpendicular to each other.

[0089] In this implementation, the energy absorption box connecting plate 30 is arranged as a front connecting plate 301 and a rear connecting plate 302 which are stacked, so that the thickness of the energy absorption box connecting plate 30 can be increased, thereby increasing the strength of the energy absorption box connecting plate 30. The rear connecting plate 302 is connected to the second front longitudinal beam 60 through the ear plate 321 on the rear connecting plate 302, thereby ensuring the connection area between the second front longitudinal beam 60 and the energy absorption box connecting plate 30, and increasing the firmness of the connection between the rear connecting plate 302 and the second front longitudinal beam 60.

[0090] In the embodiment of the present disclosure, the front connecting plate 301 and the rear connecting plate 302 are connected by bolts to facilitate disassembly; the front connecting plate 301 and the rear connecting plate 302 can also be connected by welding or other methods to ensure the firmness of the connection between the front connecting plate 301 and the rear connecting plate 302.

[0091] In an implementation of the embodiment of the present disclosure, the orthographic projection of the second front longitudinal beam 60 on the second surface of the crash box connecting plate 30 and the orthographic projection of the crash box 20 on the second surface of the crash box connecting plate 30 are independent of each other.

[0092] In this implementation, the projection of the second front longitudinal beam 60 on the surface of the energy absorption box connecting plate 30 does not overlap with the projection of the energy absorption box 20 on the surface of the energy absorption box connecting plate 30, so that the second front longitudinal beam 60 is not opposite to the energy absorption box 20, and the load force transmitted to the second front longitudinal beam 60 by the energy absorption box 20 is less, thereby reducing the load force on the second front longitudinal beam 60, thereby ensuring the safety of the second front longitudinal beam 60.

[0093] Figure 4 is a left side view of a vehicle body front structure provided by an embodiment of the present disclosure. Figure 4The second front longitudinal beam 60 includes: an extension longitudinal beam 601 and a second front longitudinal beam body 602. The extension longitudinal beam 601 extends along the fourth direction d, and one end of the extension longitudinal beam 601 is connected to the rear connecting plate 302. The second front longitudinal beam body 602 extends along the second direction, and the second front longitudinal beam body 602 is connected to the other end of the extension longitudinal beam 601. The fourth direction d is perpendicular to the first direction a and intersects with the second direction b. The extension longitudinal beam 601 first extends along the horizontal direction for a section and then extends along the fourth direction d.

[0094] In this implementation, an extended longitudinal beam 601 is arranged, and when the load force is transmitted to the extended longitudinal beam 601, the extended longitudinal beam 601 can absorb energy, further reducing the load force. The extended longitudinal beam 601 extends along the fourth direction d, so that the load force is transmitted along the fourth direction d, and the fourth direction d has a component in the third direction c, thereby increasing the transmission path of the load force in the third direction c, enhancing the energy absorption effect, and further reducing the load force.

[0095] like Figure 4 As shown, one end of the extended longitudinal beam 601 is connected to the ear plate 321 .

[0096] In the disclosed embodiment, the extended longitudinal beam 601 and the second front longitudinal beam body 602 are connected by bolts to facilitate disassembly.

[0097] In other implementations, the extended longitudinal beam 601 and the second front longitudinal beam body 602 may be connected by welding or other methods to ensure the firmness of the connection between the extended longitudinal beam 601 and the second front longitudinal beam body 602 .

[0098] like Figure 4 As shown, the second front longitudinal beam 60 is arranged at the outermost side in the vehicle width direction, and the rear end of the second front longitudinal beam 60 is used to connect with the fender part or the front pillar of the automobile. And when the vehicle is viewed from the side, the second front longitudinal beam 60 is on the upper side of the first front longitudinal beam 40.

[0099] In the embodiment of the present disclosure, the second direction b is perpendicular to the second surface 32 .

[0100] like Figure 4 As shown, reinforcing ribs 503 are arranged on the side walls of the angle bracing member 50 , and the reinforcing ribs 503 can increase the strength of the angle bracing member 50 and reduce the possibility of damage to the angle bracing member 50 .

[0101] In the embodiment of the present disclosure, the orthographic projection of the extended longitudinal beam 601 on the first plane does not overlap with the orthographic projection of the first front longitudinal beam 40 on the first plane at most. The first plane is perpendicular to the first direction.

[0102] like Figure 4As shown, on the first plane, the extended longitudinal beam 601 and the first front longitudinal beam 40 do not overlap, so that the load force can be dispersed in different directions. When the car is hit, the load force in the same direction is weakened, reducing the possibility of occupant injury.

[0103] Figure 5 yes Figure 2 Schematic diagram of the cross section of section BB. Figure 5 The angle bracing member 50 comprises: two connecting plates 501 and a fixing plate 502. The fixing plate 502 is connected to the two connecting plates 501. The cross section of the angle bracing member 50 is U-shaped.

[0104] See again Figure 2 One end of the connecting plate 501 is fixed to the side of the first front longitudinal beam 40, and the other end of the connecting plate 501 is fixed to the second surface 32 of the energy absorption box connecting plate 30, and the end surfaces of the two ends of the connecting plate 501 are perpendicular to each other. The two connecting plates 501 and the fixing plate 502 form a U-shaped angle bracing member, and the opening of the U-shaped angle bracing member faces the middle of the bumper.

[0105] In this implementation, the angle bracing member 50 is arranged as a structure of two connecting plates 501 and a fixing plate 502, so that the angle bracing member 50 forms a groove body with an opening. When the angle bracing member 50 is connected to the first front longitudinal beam 40 and the energy absorption box connecting plate 30, a cavity of the angle bracing member 50 is formed for crush energy absorption.

[0106] At the same time, in the structure of the automobile, the extension direction of the first front longitudinal beam 40 is perpendicular to the surface of the energy absorption box connecting plate 30, and the end faces of both ends of the connecting plate 501 are perpendicular to each other, which facilitates the connection of the angle bracing member 50 with the first front longitudinal beam 40 and the energy absorption box connecting plate 30.

[0107] In one implementation of the embodiment of the present disclosure, the two connecting plates 501 are parallel to each other. In other implementations, the two connecting plates 501 may not be parallel to each other.

[0108] In one implementation of the embodiment of the present disclosure, the fixing plate 502 and the two connecting plates 501 may be manufactured in an integrally formed manner to ensure the strength of the angle bracing member 50 .

[0109] Combination Figure 4 and Figure 5 The extended longitudinal beam 601 is a cylindrical structure formed by welding two U-shaped plates.

[0110] Figure 6 1 is a top view of a gusset structure provided by an embodiment of the present disclosure. The connecting plate 501 is a trapezoidal plate, and two waists 511 of the trapezoidal plate are perpendicular to each other. The connecting plate 501 is arranged as a trapezoidal plate for easy manufacturing.

[0111] like Figure 1 and Figure 2 As shown, the two waists 511 of the trapezoidal plate are respectively connected to the side of the first front longitudinal beam 40 and the second surface of the energy absorption box connecting plate 30, and a first gap 100 is provided between the upper bottom edge of the trapezoidal plate, the side of the first front longitudinal beam 40 and the second surface of the energy absorption box connecting plate 30. This allows the side of the first front longitudinal beam 40 and the energy absorption box connecting plate 30 to have a certain deformation space, so that they can deform and absorb energy when the car is hit.

[0112] In the disclosed embodiment, the angle bracing member 50 is connected to the first front longitudinal beam 40 and the energy absorption box connecting plate 30 by welding to ensure the firmness of the connection.

[0113] In other implementations, the angle bracing member 50 may be connected to the first front longitudinal beam 40 and the energy absorption box connecting plate 30 by bolt connection or other methods to facilitate disassembly.

[0114] In the embodiment of the present disclosure, the angle between the bottom side of the connecting plate 501 and the extending direction of the first front longitudinal beam 40 is between 10 degrees (°) and 80 degrees. For example, the angle between the bottom side of the connecting plate 501 and the extending direction of the first front longitudinal beam 40 is 45 degrees.

[0115] In the disclosed embodiment, the angle bracing member 50 is connected to the energy absorbing box 20 via the energy absorbing box connecting plate 30 rather than being directly connected. The connection method between the angle bracing member 50 and the energy absorbing box 20 can be referred to as pseudo-surface connection.

[0116] The front structure of the vehicle body provided in the embodiment of the present disclosure can be arranged on the driver's side of the vehicle to enhance the strength of the vehicle and improve the safety of the vehicle in a 25% offset collision. When a 25% offset collision occurs, the load force received by the vehicle is absorbed by the front structure of the vehicle body through collapse, and the remaining load force is transmitted to the cockpit, thereby reducing the damage to the cockpit caused by the collision and reducing the possibility of injury to the driver.

[0117] The disclosed embodiment also provides a car, comprising any of the above-mentioned front vehicle body structures.

[0118] In the disclosed embodiment, the front bumper, the energy absorption box, the energy absorption box connecting plate, the first front longitudinal beam and the angle brace member together constitute the front body structure in this application. The energy absorption box is located between the front bumper and the first front longitudinal beam. When the car collides, the front bumper is hit, and the front bumper transfers the load force to the energy absorption box, and the energy absorption box collapses and absorbs energy, thereby reducing the load force. Since the angle brace member connects the energy absorption box connecting plate and the first front longitudinal beam, the energy absorption box directly transfers part of the load force to the first front longitudinal beam, and the energy absorption box transfers another part of the load force to the angle brace member, and the angle brace member can also absorb part of the energy, thereby reducing the load force. The angle brace member then transfers the load force to the first front longitudinal beam. Due to the existence of the angle brace member, on the basis of the energy absorption of the energy absorption box, the angle brace member will also absorb part of the energy, further reducing the load force transferred to the first front longitudinal beam, and increasing the energy absorption effect of the front body structure. Thereby reducing the load force transferred from the first front longitudinal beam to the passenger compartment, reducing the possibility of occupant injury. At the same time, the load force transmitted to the first front longitudinal beam is reduced, thereby reducing the possibility of deformation of the first front longitudinal beam due to excessive load force, and avoiding the deformation of the first front longitudinal beam affecting the safety of the vehicle.

[0119] The above description is only an optional embodiment of the present disclosure and is not intended to limit the present disclosure. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A vehicle body front structure, characterized in that: The vehicle body front structure comprises: A front bumper (10) extending along a first direction; An energy absorption box (20) having an energy absorption cavity, one end of the energy absorption box (20) being connected to the end of the front bumper (10); An energy absorbing box connecting plate (30) having a first surface and a second surface arranged opposite to each other, wherein the first surface is connected to the other end of the energy absorbing box (20); A first front longitudinal beam (40) extending along a second direction, wherein the first front longitudinal beam (40) is connected to the second surface; A gusset member (50), wherein the orthographic projection of one end of the gusset member (50) on the second surface at least partially overlaps with the orthographic projection of the other end of the energy absorption box (20) on the second surface, the gusset member (50) comprises a fixing plate (502) and two connecting plates (501), the connecting plates (501) are trapezoidal plates, the two waists of the trapezoidal plates are perpendicular to each other, the two waists of the trapezoidal plates are respectively connected to the side surface of the first front longitudinal beam (40) and the second surface of the energy absorption box connecting plate (30), and the bottom edge of the connecting plate (501) is connected to the The angle of the extension direction of the first front longitudinal beam (40) is between 10 degrees and 80 degrees, a first gap (100) is provided between the upper bottom edge of the trapezoidal plate, the side surface of the first front longitudinal beam (40) and the second surface of the energy absorption box connecting plate (30), the fixing plate (502) is connected to the two connecting plates (501) at the same time, the two connecting plates (501) and the fixing plate (502) form a U-shaped angle bracing member, the opening of the U-shaped angle bracing member faces the middle of the front bumper (10), and the cavity of the U-shaped angle bracing member is used for crushing energy absorption; The second direction intersects with the first direction, the second direction is perpendicular to the second surface, and the second direction is the length direction of the car.

2. The vehicle body front structure according to claim 1, characterized in that: The vehicle body front structure also includes: The second front longitudinal beam (60) is connected to the second surface of the energy absorption box connecting plate (30), and the second front longitudinal beam (60) and the first front longitudinal beam (40) are arranged at intervals along the first direction.

3. The vehicle body front structure according to claim 2, characterized in that: The second front longitudinal beam (60) comprises: An extended longitudinal beam (601) extends along a fourth direction, one end of the extended longitudinal beam (601) being connected to the energy absorption box connecting plate (30); A second front longitudinal beam body (602) extending along the second direction, wherein the second front longitudinal beam body (602) is connected to the other end of the extension longitudinal beam (601); The fourth direction is perpendicular to the first direction and intersects with the second direction.

4. The vehicle body front structure according to claim 2, characterized in that: The energy absorption box connecting plate (30) comprises: A connecting plate body (300) is respectively connected to the energy absorption box (20), the first front longitudinal beam (40) and the angle bracing member (50); The ear plate (321) is respectively connected to the outer side and the upper side of the connecting plate body (300), and the ear plate (321) is also connected to the second front longitudinal beam (60).

5. The vehicle body front structure according to claim 2, characterized in that: The orthographic projection of the second front longitudinal beam (60) on the second surface of the energy absorption box connecting plate (30) and the orthographic projection of the angle bracing member (50) on the second surface of the energy absorption box connecting plate (30) are independent of each other.

6. The vehicle body front structure according to claim 2, characterized in that: The orthographic projection of the second front longitudinal beam (60) on the second surface of the energy absorption box connecting plate (30) and the orthographic projection of the energy absorption box (20) on the second surface of the energy absorption box connecting plate (30) are independent of each other.

7. The vehicle body front structure according to claim 3, characterized in that: The orthographic projection of the extended longitudinal beam (601) on the first plane and the orthographic projection of the first front longitudinal beam (40) on the first plane at least partially do not overlap; The first plane is perpendicular to the first direction.

8. A car, characterized in that: The automobile comprises the vehicle body front structure according to any one of claims 1 to 7.

Images