A front engine compartment skeleton and a vehicle

Abstract

The present application discloses a front engine compartment frame and a vehicle, which solve the technical problem in the prior art that the width drop of the vehicle frame is relatively large, resulting in poor collision buffering and energy absorption effect. It includes: two front longitudinal beams, a crossbeam assembly and a front bumper beam assembly. Among them, the two front longitudinal beams are arranged at intervals along the vehicle width direction. The front longitudinal beam includes a front longitudinal beam section, a middle longitudinal beam section and a rear longitudinal beam section arranged in sequence along the longitudinal direction. The rear longitudinal beam section is bent outward in the vehicle width direction compared with the front longitudinal beam section and the middle longitudinal beam section, and a reinforcing bracket is provided on the rear longitudinal beam section; the crossbeam assembly is connected between the two front longitudinal beams; the front bumper beam assembly includes a front bumper beam and an energy absorption box connected between the front longitudinal beam section and the front bumper beam. During the collision, the reinforcing bracket can prevent the folding and collapse at the turning point, play a strengthening role, and at the same time achieve the purpose of shock absorption and energy absorption.

Description

Technical Field

[0001] This application belongs to the technical field of vehicles, and particularly relates to a front engine compartment frame and a vehicle. Background Art

[0002] With the popularization and development of electric vehicles, during the use of electric vehicles, due to the need to install a battery pack in the electric vehicle, there is a large drop in the width direction of the vehicle frame. In the prior art, a primary energy absorption box is usually adopted in the collision buffer and energy absorption area of the vehicle frame or vehicle body. The bumper and the energy absorption box are welded together or assembled separately. During a collision, it is not conducive to the transmission of collision force, resulting in a poor energy absorption effect. Summary of the Invention

[0003] To solve the above technical problems, this application provides a front engine compartment frame and a vehicle, which solves the technical problem in the prior art that the large width drop of the vehicle frame leads to poor collision buffer and energy absorption effects.

[0004] The technical solution adopted to achieve the purpose of this application is a front engine compartment frame, including:

[0005] Two front longitudinal beams, spaced along the width direction of the vehicle. The front longitudinal beam includes a front section, a middle section, and a rear section arranged in sequence along the longitudinal direction. The rear section of the longitudinal beam is bent outward in the width direction of the vehicle compared with the front section and the middle section of the longitudinal beam, and a strengthening bracket is provided on the rear section of the longitudinal beam;

[0006] A crossbeam assembly, connected between the two front longitudinal beams;

[0007] An anti-collision beam assembly, including a front anti-collision beam and an energy absorption box connected between the front section of the longitudinal beam and the front anti-collision beam.

[0008] Further, the front section of the longitudinal beam includes a front outer plate and a front inner plate, and a closed inner cavity is formed by enclosing the front outer plate and the front inner plate.

[0009] Further, grooves and a plurality of energy absorption holes are provided on the front inner plate and / or the front outer plate. The plurality of energy absorption holes include two or more groups of holes arranged in sequence from front to back along the length direction of the vehicle, and the number of holes in each group shows an increasing trend.

[0010] Further, the holes in the same group of holes are staggeredly distributed in the length direction of the vehicle.

[0011] Further, the front section of the longitudinal beam is a curved beam, and the height of the rear end of the front section of the longitudinal beam is higher than that of the front end.

[0012] Further, the reinforcing bracket includes an outer bracket and an inner bracket, wherein the outer bracket is connected to the rear section of the longitudinal beam, and the inner bracket is located between the outer bracket and the rear section of the longitudinal beam and is connected to both the outer bracket and the rear section of the longitudinal beam.

[0013] Further, the inner bracket is provided with a protrusion, and the outer bracket is provided with a card slot, and the card slot on the outer bracket is connected in cooperation with the protrusion on the inner bracket.

[0014] Further, the cross-sectional dimension of the front anti-collision beam shows an increasing trend, and the plate thickness in the front-rear direction is smaller than other wall thicknesses;

[0015] The cross-section of the energy-absorbing box is centrosymmetric and axially symmetric;

[0016] The rear end of the energy-absorbing box is provided with a first flange, the front section of the longitudinal beam is provided with a second flange, and the first flange and the second flange are butted and connected by bolts.

[0017] Further, the crossbeam assembly includes a first crossbeam, a second crossbeam, a third crossbeam, and a fourth crossbeam;

[0018] The first crossbeam, the second crossbeam, the third crossbeam, and the fourth crossbeam are sequentially connected between the two front longitudinal beams, and the cross-sections of the first crossbeam, the second crossbeam, and the third crossbeam increase in sequence;

[0019] The third crossbeam includes a third upper crossbeam and a third lower crossbeam, and the third upper crossbeam, the third lower crossbeam, and the two front longitudinal beams form a structure like the Chinese character 'Ri';

[0020] Both ends of the fourth crossbeam are connected to the two reinforcing brackets.

[0021] Based on the same inventive concept, the present application provides a vehicle including the above-mentioned front engine compartment skeleton.

[0022] As can be seen from the above technical solutions, the present application provides a front engine compartment skeleton, including: two front longitudinal beams, a crossbeam assembly, and an anti-collision beam assembly. The two front longitudinal beams are arranged at intervals along the vehicle width direction. The front longitudinal beam includes a front section of the longitudinal beam, a middle section of the longitudinal beam, and a rear section of the longitudinal beam arranged in sequence along the longitudinal direction. The rear section of the longitudinal beam is bent outward in the vehicle width direction compared with the front section of the longitudinal beam and the middle section of the longitudinal beam, and a reinforcing bracket is provided on the rear section of the longitudinal beam; the crossbeam assembly is connected between the two front longitudinal beams; the anti-collision beam assembly includes a front anti-collision beam and an energy-absorbing box connected between the front section of the longitudinal beam and the front anti-collision beam.

[0023] Thus, during the collision process, the collision force can be absorbed and the initial energy of the collision can be mitigated through the front anti-collision beam and the energy-absorbing box. Then, the front section of the longitudinal beam absorbs energy in the middle stage. After the rear section of the longitudinal beam plays a supporting role, it can also absorb a part of the energy. The reinforcing bracket located on the rear section of the longitudinal beam can prevent folding and collapse at the turning point and play a strengthening role. At the same time, the crossbeam assembly arranged between the two front longitudinal beams can not only prevent the rear section of the longitudinal beam from spreading outwards during the collision process, but also the frame structure formed by the crossbeam assembly and the two front longitudinal beams can play a role in side collision and oblique collision, achieving the purpose of shock absorption and energy absorption. Brief Description of the Drawings

[0024] Figure 1 It is a schematic top view structure diagram of the front engine compartment skeleton in the embodiment of the present application.

[0025] Figure 2 In the embodiment of the present application Figure 1 It is a schematic enlarged structure diagram at position M.

[0026] Figure 3 It is a schematic cross-sectional structure diagram of the front anti-collision beam in the embodiment of the present application.

[0027] Figure 4 It is a schematic cross-sectional structure diagram of the energy-absorbing box in the embodiment of the present application.

[0028] Figure 5 In the embodiment of the present application Figure 1 It is a schematic structure diagram in the B direction.

[0029] Figure 6 It is a side view of the front section of the longitudinal beam in the embodiment of the present application.

[0030] Figure 7 It is a schematic structure diagram of the inner panel of the front section in the embodiment of the present application.

[0031] Figure 8 It is a schematic structure diagram of the inner layer bracket in the embodiment of the present application.

[0032] Figure 9 It is a schematic structure diagram after the outer layer bracket and the inner layer bracket are connected in the embodiment of the present application.

[0033] Figure 10 It is a sectional view taken along the A-A direction in the embodiment of the present application.

[0034] Figure 11 It is an axial view of the front engine compartment skeleton in the embodiment of the present application.

[0035] Description of reference numerals: 10-front cabin frame, 101-front longitudinal beam, 1011-front longitudinal beam front section, 10111-front section outer plate, 10112-front section inner plate, 10113-groove, 10114-energy absorption hole, 1012-longitudinal beam middle section, 10121-shock tower, 1013-longitudinal beam rear section, 102-cross beam assembly, 1021-first cross beam, 1022-second cross beam, 10113-recess, 10114-energy absorption hole, 1012-longitudinal beam middle section, 10121-shock tower, 1013-longitudinal beam rear section, 102-cross beam assembly, 1021-first cross beam, 1022-second cross beam, 10114-recess, 10115-recess, 10116-recess, 10117-recess, 10118-recess, 10119-recess, 1022-recess, 1023-recess, 1024-recess, 1025-recess, 1026-recess, 1027-recess, 1028-recess, 1029-recess, 1030-recess, 1031-recess, 1032-recess, 1033-recess, 1034-recess, 1035-recess, 1036-recess, 1037-recess, 1038-recess, 1039-recess, 1040-recess, 1041-recess, 1042-recess, 1043-recess, 1044-recess, 104 23-third cross beam, 10231-third upper cross beam, 10232-third lower cross beam, 1024-fourth cross beam, 103-anti-collision beam assembly, 1031-front anti-collision beam, 1032-energy absorption box, 104-reinforcement bracket, 1041-outer bracket, 1042-inner bracket, 1043-welding hole, 105-first flange, 106-second flange, 107-bolt. DETAILED DESCRIPTION

[0036] In order to enable technicians in the technical field to which the present application belongs to understand the present application more clearly, the technical solution of the present application is described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0037] Embodiment 1:

[0038] The present application embodiment provides a front cabin frame, see the attached Figure 1 , wherein the front engine room frame 10 includes: two front longitudinal beams 101, a cross beam assembly 102 and an anti-collision beam assembly 103, wherein the two front longitudinal beams 101 are arranged at intervals along the vehicle width direction, and the front longitudinal beam 101 includes a longitudinal beam front section 1011, a longitudinal beam middle section 1012 and a longitudinal beam rear section 1013 arranged in sequence along the longitudinal direction, the longitudinal beam rear section 1013 is bent outwardly in the vehicle width direction compared with the longitudinal beam front section 1011 and the longitudinal beam middle section 1012, and a reinforcing bracket 104 is provided on the longitudinal beam rear section 1013; the cross beam assembly 102 is connected between the two front longitudinal beams 101; the anti-collision beam assembly 103 includes a front anti-collision beam 1031 and an energy absorption box 1032 connected between the longitudinal beam front section 1011 and the front anti-collision beam 1031.

[0039] Therefore, during a collision, the collision force can be absorbed by the front anti-collision beam 1031 and the energy absorption box 1032 to alleviate the initial energy of the collision, and then the front section 1011 of the longitudinal beam can absorb mid-term energy. After the rear section 1013 of the longitudinal beam plays a supporting role, it can also absorb part of the energy. The reinforcing bracket 104 located on the rear section 1013 of the longitudinal beam can prevent folding and collapse at the corner, and play a reinforcing role. At the same time, the crossbeam assembly 102 arranged between the two front longitudinal beams 101 can not only prevent the rear section 1013 of the longitudinal beam from opening outward during a collision, but also the frame structure formed by the crossbeam assembly 102 and the two front longitudinal beams 101 can play a role in side collisions and oblique collisions, and achieve the purpose of shock absorption and energy absorption.

[0040] In some embodiments, see the attachedFigure 2 , wherein the front anti-collision beam 1031 and the energy absorption box 1032 are connected by welding.

[0041] In order to reduce the deformation of the front engine compartment after a collision, in some embodiments, refer to the attached Figure 5 to the attached Figure 7 , the front section 1011 of the longitudinal beam includes an outer front plate 10111 and an inner front plate 10112. The closed inner cavity formed by the outer front plate 10111 and the inner front plate 10112 can absorb a part of the energy and reduce the deformation after the collision; in order to further reduce the deformation of the front engine compartment, in some other embodiments, both the outer front plate 10111 and the inner front plate 10112 are made of steel materials; in order to further weaken the deformation after the collision, the cross-section of the closed inner cavity formed by the outer front plate 10111 and the inner front plate 10112 is a rectangular structure. After the collision, the rectangular closed inner cavity formed by the outer front plate 10111 and the inner front plate 10112 can weaken and absorb the energy in the inner cavity and reduce the deformation.

[0042] In order to reduce the deformation of the front engine compartment after a collision, in some embodiments, refer to the attached Figure 6 , both the outer front plate 10111 and the inner front plate 10112 are U-shaped plates, and the inner front plate 10112 and the outer front plate 10111 are welded together. The U-shaped outer front plate 10111 and the U-shaped inner front plate 10112 are buckled with each other to form a rectangular structure and then welded. In order to facilitate the buckling of the U-shaped outer front plate 10111 and the U-shaped inner front plate 10112, in some other embodiments, the U-shaped outer front plate 10111 is larger than the U-shaped inner front plate 10112, so that the U-shaped inner front plate 10112 can extend into the U-shaped outer front plate 10111 and be buckled with each other and then welded.

[0043] In order to further reduce the deformation of the front engine compartment after a collision and improve the energy absorption effect, in some embodiments, refer to the attached Figure 7 , grooves 10113 and a plurality of energy absorption holes 10114 are provided on the inner front plate 10112 and / or the outer front plate 10111. The plurality of energy absorption holes 10114 include two or more groups of holes arranged in sequence from front to back along the vehicle length direction and with an increasing number of holes. By providing the grooves 10113 and the energy absorption holes 10114, the energy absorption function is achieved.

[0044] In some embodiments, refer to the attached Figure 7, a number of energy absorption holes 10114 include two groups of hole groups arranged in sequence from front to back along the vehicle length direction, and the number of holes shows an increasing trend, including a front row of holes and a rear row of holes, where the number of the front row of hole groups is less than that of the rear row of hole groups. For example, the number of the front row of holes is 3, and the number of the rear row of holes is 4. During an actual collision, the larger number of the rear row of hole groups than that of the front row of holes can stagger to increase the bending stiffness, and some of the hole groups can also be used to fix the wire harness.

[0045] In some embodiments, a number of energy absorption holes 10114 include three groups of hole groups arranged in sequence from front to back along the vehicle length direction, and the number of holes shows an increasing trend, including a first row of hole groups, a second row of hole groups and a third row of hole groups, where the number of the first row of hole groups is less than that of the second row of hole groups, and the number of the second row of hole groups is less than that of the third row of hole groups. For example, the number of the first row of holes is 3, the number of the second row of holes is 4, and the number of the third row of holes is 5. During an actual collision, the arrangement of the hole groups with an increasing number can stagger to increase the bending stiffness, and some of the hole groups can also be used to fix the wire harness.

[0046] In some embodiments, refer to Figure 7 , the holes located in the same hole group are staggeredly distributed in the vehicle length direction. Taking one end of the front section 1011 of the longitudinal beam as the P surface and the other end as the Q surface as an example, where the hole group is arranged at the bending position near the end surface Q at the rear end of the front section 1011 of the longitudinal beam, and the specific arrangement method is: the number of the first row of holes is 3, the number of the second row of holes is 4, the first hole in each row is arranged above the P surface, the holes arranged on the rear end symmetry axis axle are biased towards the P surface, and the second and third holes in each row are both offset to the right by a certain distance. Taking two rows of holes as an example, they are respectively denoted as X1 and X2, where the sizes of X1 and X2 are not zero. The staggered hole groups can increase the bending stiffness in a staggered manner, and compared with the hole groups where the sizes of X1 and X2 are zero, they can better increase the bending stiffness.

[0047] In some embodiments, refer to the appendix Figure 7 , the front section 1011 of the longitudinal beam is a bent beam, and the height of the rear end of the front section 1011 of the longitudinal beam is higher than that of the front end. The height of the rear end of the front section 1011 of the longitudinal beam and the height of the front end of the front section 1011 of the longitudinal beam may have a drop of H, where H is greater than zero. Such a layout feature can make the collision deformation amount and the folding direction both follow the required direction, playing a role in further energy absorption. In some other embodiments, the hole group can be arranged at the rear end of the front section 1011 of the longitudinal beam with a drop of H and near the end surface Q, playing a role in further energy absorption.

[0048] In order to further prevent the folding and collapse at the bending position during the collision, in some embodiments, refer to Figures 8 to 10The reinforcement bracket 104 includes an outer bracket 1041 and an inner bracket 1042, wherein the outer bracket 1041 is connected to the longitudinal beam rear section 1013, and the inner bracket 1042 is located between the outer bracket 1041 and the longitudinal beam rear section 1013 and is connected to both the outer bracket 1041 and the longitudinal beam rear section 1013. The inner bracket 1042 is arranged between the outer bracket 1041 and the longitudinal beam rear section 1013, so as to play a better supporting role and prevent collapse.

[0049] In some embodiments, see the attached Figure 10 , the inner bracket 1042 is provided with a protrusion, the outer bracket 1041 is provided with a slot, and the slot on the outer bracket 1041 is matched with the protrusion of the inner bracket 1042. Specifically, the inner bracket 1042 is provided with a protrusion in the middle and slots at both ends, the inner bracket 1042 is provided with a slot in the middle and protrusions at both ends, and the outer bracket 1041 is connected with the protrusion and slot of the inner bracket 1042 correspondingly. In order to further ensure the stability of the connection, in other embodiments, the outer bracket 1041 is provided with a plurality of welding holes 1043, through which the outer bracket 1041 and the inner bracket 1042 can be welded together, thereby improving the stability of the connection between the outer bracket 1041 and the inner bracket 1042, wherein the welding holes 1043 can be provided with 3, 4, 5 or 6, which are set according to actual conditions.

[0050] In order to absorb the energy of the initial collision, in some embodiments, see the attached Figure 3 , the cross-sectional dimension of the front anti-collision beam 1031 tends to increase, and the plate thickness in the front-to-back direction is less than the other wall thicknesses; in other embodiments, the cross-sectional dimension of the front anti-collision beam 1031 is an irregular Japanese-shaped hexagonal structure, and by setting an irregular Japanese-shaped hexagon, a horizontal inner rib plate is provided in the middle, which can absorb the energy at the initial stage of the collision and effectively alleviate the energy of the initial collision. The anti-collision beam can be an energy absorption box 1032 made of aluminum material.

[0051] In some embodiments, the cross section of the energy absorption box 1032 is a centrally symmetrical and axially symmetrical structure; Figure 4 The cross section of the energy absorption box 1032 is a Japanese-shaped octagonal structure, wherein a vertical inner rib plate is provided in the middle of the Japanese-shaped octagon, which can symmetrically connect the left and right parts of the energy absorption box 1032 together, and can effectively alleviate the energy of the initial collision and absorb the energy of the initial collision. The energy absorption box 1032 can be an energy absorption box 1032 made of aluminum material.

[0052] In order to facilitate the connection between the energy absorbing box 1032 and the longitudinal beam front section 1011, in some embodiments, refer to the attached Figure 2, a first flange 105 is provided at the rear end of the energy-absorbing box 1032, and a second flange 106 is provided at the front section 1011 of the longitudinal beam. The first flange 105 and the second flange 106 are butted and connected by bolts 107. In some other embodiments, this welded integral bolt 107 connection structure can also be disassembled and replaced with other structures, such as the front bumper beam 1031 or the bumper and other functional requirement components, such as a winch and its bracket, etc., as long as it can play the role of buffering and energy absorption in the early stage.

[0053] In some embodiments, refer to the appendix Figure 1 , where there is also a shock tower 10121 at the middle section 1012 of the longitudinal beam. One end of the shock tower 10121 is connected to the front section 1011 of the longitudinal beam, and one end is connected to the reinforcement bracket 104, further strengthening the strength of the front engine compartment frame 10.

[0054] In order to improve the stability of the front engine compartment frame 10 and reduce the angle at which the front section of the longitudinal beam spreads outwards during a collision, in some embodiments, refer to the appendix Figure 11 , the crossbeam assembly 102 includes a first crossbeam 1021, a second crossbeam 1022, a third crossbeam 1023, and a fourth crossbeam 1024; by connecting the first crossbeam 1021, the second crossbeam 1022, the third crossbeam 1023, and the fourth crossbeam 1024 in sequence between the two front longitudinal beams 101, and the cross-sections of the first crossbeam 1021, the second crossbeam 1022, and the third crossbeam 1023 increase in sequence; not only can the two front longitudinal beams 101 be connected to play a role of fixed support, but also the structures of the first crossbeam 1021, the second crossbeam 1022, and the third crossbeam 1023 with sequentially increasing cross-sections make the deformation of the front engine compartment gradually decrease from front to back during a collision, further absorbing the energy during the collision and effectively alleviating the impact force of the collision.

[0055] Due to the layout requirements of other structures in the front engine compartment, it is restricted to increase the cross-section at the third crossbeam 1023. Refer to the appendix Figure 11, in some other embodiments, the third cross beam 1023 includes a third upper cross beam 10231 and a third lower cross beam 10232. The third lower cross beam 10232 is in a T shape and can be made of aluminum material. The third upper cross beam 10231, the third lower cross beam 10232 and the two front longitudinal beams 101 form a structure like the Chinese character "Ri". The frame structure formed by the third upper cross beam 10231, the third lower cross beam 10232 and the two front longitudinal beams 101 can play a role in side collision or oblique collision, thereby improving the torsional stiffness of the front engine compartment to enhance the stability of the front engine compartment during oblique collision and side collision, and also reducing the outward expansion deformation of the rear section 1013 of the longitudinal beam during frontal collision. In some other embodiments, the rear sections 1013 of the left and right longitudinal beams form a flared shape from front to back. Due to its large drop T, in order to avoid the rear section 1013 of the longitudinal beam being easily folded and collapsed inward at the excessive turning position, in order to prevent this folding and collapse, a reinforcing bracket 104 is added outside the rear section 1013 of the longitudinal beam to further avoid the rear section 1013 of the longitudinal beam being easily folded and collapsed inward at the excessive turning position.

[0056] In order to prevent the rear section 1013 of the longitudinal beam in the front engine compartment from opening at the drop T during collision, in some embodiments, a fourth cross beam 1024 is further provided between the two reinforcing brackets 104. The fourth cross beam 1024 can connect the reinforcing brackets 104, play a role in connecting the two rear sections 1013 of the longitudinal beam, prevent the rear section 1013 of the longitudinal beam from opening during the collision process, play a role in supporting the rear section 1013 of the longitudinal beam, and at the same time can play an energy absorption role.

[0057] In some embodiments, accessories such as air conditioners can be installed at the first cross beam 1021, and suspensions etc. can be installed at the second cross beam 1022, the third upper cross beam 10231 and the third lower cross beam 10232.

[0058] In some embodiments, a number of wire passing holes are provided on the first cross beam 1021, the second cross beam 1022, the third cross beam 1023 and the fourth cross beam 1024 for fixing wire harnesses.

[0059] Embodiment 2:

[0060] Based on the same inventive concept, the present application provides a vehicle including the above-mentioned front engine compartment skeleton 10. The vehicle can be a pure electric vehicle or a hybrid electric vehicle, and can be a family car, a bus, a truck, etc. Since the specific structure of the vehicle in this embodiment is not improved, the structures of the vehicle in this embodiment that remain unchanged can refer to the prior art, and the specific content will not be elaborated here.

[0061] Through the above embodiments, the present application has the following beneficial effects or advantages:

[0062] 1) During the collision process of this application, the collision force can be absorbed and the initial collision energy can be mitigated through the front anti-collision beam and the energy-absorbing box. Then, the front section of the longitudinal beam absorbs energy in the middle stage. After the rear section of the longitudinal beam plays a supporting role, it can also absorb a part of the energy. The strengthening bracket located on the rear section of the longitudinal beam can prevent folding and collapse at the turning point and play a strengthening role. At the same time, the crossbeam assembly arranged between the two front longitudinal beams can not only prevent the rear section of the longitudinal beam from spreading outwards during the collision process, but also the frame structure formed by the crossbeam assembly and the two front longitudinal beams can play a role in side collisions and oblique collisions, achieving the purpose of shock absorption and energy absorption.

[0063] 2) In this application, a strengthening bracket is provided at the rear section of the longitudinal beam. The strengthening bracket includes an outer bracket and an inner bracket. The outer bracket is connected to the rear section of the longitudinal beam, and the inner bracket is located between the outer bracket and the rear section of the longitudinal beam and is connected to both the outer bracket and the rear section of the longitudinal beam. By being arranged between the outer bracket and the rear section of the longitudinal beam, the inner bracket can play a better supporting role and prevent collapse.

[0064] 3) In this application, the front section of the longitudinal beam is a curved beam. The height of the rear end of the front section of the longitudinal beam is higher than that of the front end of the front section of the longitudinal beam. There can be a height difference of H between the height of the rear end and the height of the front end of the front section of the longitudinal beam, where H is greater than zero. Such a layout feature can make the collision deformation amount and the folding direction both follow the required direction, playing a role in further energy absorption. And there are grooves and several energy-absorbing holes provided in the front section of the longitudinal beam, playing a role in further energy absorption.

[0065] Although the preferred embodiments of this application have been described, those of ordinary skill in the art can make additional changes and modifications to these embodiments once they know the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of this application.

[0066] Obviously, those skilled in the art can make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalent technologies, this application also intends to include these changes and modifications.

Claims

1. A front engine compartment skeleton, characterized in that, it includes: Two front longitudinal beams are arranged at intervals in the vehicle width direction. The front longitudinal beam includes a front longitudinal beam section, a middle longitudinal beam section, and a rear longitudinal beam section arranged in sequence longitudinally. The rear longitudinal beam section is bent outward in the vehicle width direction compared with the front longitudinal beam section and the middle longitudinal beam section, and a reinforcing bracket is provided on the rear longitudinal beam section; The front longitudinal beam section includes a front outer plate and a front inner plate, and a closed inner cavity is formed by enclosing the front outer plate and the front inner plate; The reinforcing bracket includes an outer layer bracket and an inner layer bracket, wherein the outer layer bracket is connected to the rear longitudinal beam section, and the inner layer bracket is located between the outer layer bracket and the rear longitudinal beam section and is connected to both the outer layer bracket and the rear longitudinal beam section; A crossbeam assembly is connected between the two front longitudinal beams; A front collision beam assembly includes a front collision beam and an energy absorption box connected between the front longitudinal beam section and the front collision beam; Grooves and a plurality of energy absorption holes are provided on the front inner plate and / or the front outer plate. The plurality of energy absorption holes include two or more groups of holes arranged in sequence from front to back in the vehicle length direction and with the number of holes showing an increasing trend; The holes in the same group of holes are staggeredly distributed in the vehicle length direction.

2. The front engine compartment skeleton according to claim 1, characterized in that, The front longitudinal beam section is a curved beam, and the height of the rear end of the front longitudinal beam section is higher than the height of the front end of the front longitudinal beam section.

3. The front engine compartment skeleton according to claim 1, characterized in that, A protrusion is provided on the inner layer bracket, and a clamping groove is provided on the outer layer bracket. The clamping groove on the outer layer bracket is cooperatively connected with the protrusion on the inner layer bracket.

4. The front engine compartment skeleton according to any one of claims 1-3, characterized in that, The cross-sectional dimension of the front collision beam shows an increasing trend, and the plate thickness in the front-rear direction is smaller than other wall thicknesses; The cross-section of the energy absorption box is centrosymmetric and axially symmetric; A first flange is provided at the rear end of the energy absorption box, and a second flange is provided on the front longitudinal beam section. The first flange and the second flange are butted and connected by bolts.

5. The front engine compartment skeleton according to any one of claims 1-3, characterized in that, The crossbeam assembly includes a first crossbeam, a second crossbeam, a third crossbeam, and a fourth crossbeam; The first crossbeam, the second crossbeam, the third crossbeam, and the fourth crossbeam are sequentially connected between the two front longitudinal beams, and the cross-sections of the first crossbeam, the second crossbeam, and the third crossbeam increase in sequence; The third crossbeam includes a third upper crossbeam and a third lower crossbeam, and the third upper crossbeam, the third lower crossbeam, and the two front longitudinal beams form a structure in the shape of the Chinese character 'Ri'; Both ends of the fourth crossbeam are connected to the two reinforcing brackets.

6. A vehicle, characterized in that, it includes the front engine compartment skeleton according to any one of claims 1-5.

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