Front cabin assembly and vehicle

Abstract

The present application provides a front engine compartment assembly and a vehicle. The front engine compartment assembly includes the inner side of the longitudinal beam, the outer side of the longitudinal beam, the front wall cross beam, the front wall plate, the front wall lower plate and the torsion box, which are integrally formed by centrifugal casting. The front section of the inner side of the longitudinal beam and the front section of the outer side of the longitudinal beam are combined to form a first chamber. The front wall cross beam and the front wall plate are combined to form a second chamber. The rear section of the inner side of the longitudinal beam and the rear section of the outer side of the longitudinal beam are combined to form a third chamber. The front wall lower plate and the torsion box are combined to form a rear chamber. The inner side of the longitudinal beam, the outer side of the longitudinal beam, the front wall cross beam, the front wall plate, the front wall lower plate and the torsion box of the front engine compartment assembly are integrally formed by centrifugal casting, and the transition of the front engine compartment body is smooth and the parts integration is high. At the same time, the first chamber, the second chamber, the third chamber and the rear chamber are formed in the front engine compartment assembly, and the continuously closed chambers make the front engine compartment assembly have higher rigidity, strength and better collision force transmission effect.

Description

Technical Field

[0001] The present application relates to the field of vehicles, and in particular to a front cabin assembly and a vehicle. Background Art

[0002] As people's living standards continue to improve, many different types of vehicles have appeared on the market. The front engine compartment assembly is an important part of the vehicle, absorbing energy in a collision, transmitting energy, and providing sufficient rigidity for the body frame. Existing front engine compartment assemblies are mostly stamped from steel plates and welded together into a whole. There are a large number of parts, a complex design structure, and a long production and manufacturing cycle. The current front engine compartment assembly is also formed in one piece by high-pressure casting. However, the high-pressure cast front engine compartment assembly cannot form a closed cavity, and the parts have low strength and toughness, and the collision transmission effect is poor.

[0003] Therefore, it is necessary to provide an improved front cabin assembly and vehicle to solve the above problems. Summary of the invention

[0004] The present application provides a front cabin assembly and a vehicle with high rigidity and good collision force transmission effect.

[0005] The present application provides a front engine compartment assembly, including an inner side of a longitudinal beam, an outer side of a longitudinal beam, a front wall cross beam, a front wall plate, a front wall lower plate and a torsion box, which are integrally formed by centrifugal casting; the front section of the inner side of the longitudinal beam and the front section of the outer side of the longitudinal beam together form a first chamber; the front wall cross beam and the front wall plate together form a second chamber; the rear section of the inner side of the longitudinal beam and the rear section of the outer side of the longitudinal beam together form a third chamber; the front wall lower plate and the torsion box together form a rear chamber.

[0006] Furthermore, a first support plate and a second support plate extending in the front-to-back direction and arranged at intervals are integrally formed in the rear chamber; the front enclosure lower plate, the first support plate and the torsion box together form a fourth chamber; the front enclosure lower plate, the first support plate, the second support plate and the torsion box together form a fifth chamber; the front enclosure lower plate, the second support plate and the torsion box together form a sixth chamber.

[0007] Furthermore, the first support plate and the second support plate are connected to the front lower plate and the torsion box, respectively; a gap is formed between the first support plate, the second support plate and the rear wall of the torsion box, and the fourth chamber, the fifth chamber and the sixth chamber are connected through the gap.

[0008] Furthermore, a plurality of X-direction reinforcing ribs are formed on the front enclosure lower plate; the X-direction reinforcing ribs are arranged above the first support plate and the second support plate, and the X-direction reinforcing ribs are V-shaped and their heights gradually decrease from front to back.

[0009] Furthermore, the front ends of the first support plate and the second support plate extend to the outer side and the inner side of the longitudinal beam along the length direction of the vehicle body; the rear ends of the first support plate and the second support plate extend to the rear wall of the torsion box along the length direction of the vehicle body.

[0010] Furthermore, the first chamber forms a force transmission path with the second chamber, the third chamber, the fourth chamber, the fifth chamber and the sixth chamber respectively; the first chamber, the second chamber, the third chamber, the fourth chamber, the fifth chamber and the sixth chamber are all closed structures in the circumferential direction.

[0011] Furthermore, a flange plate is integrally formed at the inner side of the longitudinal beam and the front end of the outer side of the longitudinal beam, and the flange plate is arranged around the front end opening of the first cavity; a docking type anti-collision beam assembly mounting hole is formed on the flange plate, and a plurality of reinforcing ribs are integrally formed between the flange plate and the side wall of the first cavity.

[0012] Furthermore, a flange plate is integrally formed at the inner side of the longitudinal beam and the front end of the outer side of the longitudinal beam, and a guide fillet of an inserted anti-collision beam assembly is formed at the connection between the flange plate and the first cavity; and an insert-type anti-collision beam assembly mounting hole is formed at the front end of the first cavity.

[0013] Furthermore, the outer side of the longitudinal beam includes a shock absorber seat, and the shock absorber seat includes an integrally formed wheel cover and swing arm mounting portion; the swing arm mounting portion includes a base formed on the wheel cover, a mounting platform formed on the base and protruding outward, and a support platform connected to the lower part of the mounting platform.

[0014] Furthermore, the base and the support platform are both thin-walled structures, the mounting platform is a locally thickened structure, and an external mounting hole is provided on the mounting platform; the support platform includes horizontal supporting surfaces located on both sides of the mounting platform and side supporting surfaces connected to the mounting surfaces of the mounting platform; a U-shaped groove is formed between the base and the side supporting surfaces.

[0015] Furthermore, the base is a double-layer structure, which includes an outer wall and an inner wall, an inner cavity is formed between the outer wall and the inner wall, and an inner mounting hole is formed on the inner wall; the inner side of the wheel cover is provided with reinforcing ribs connected to the outer wall and the inner wall and arranged in the vertical direction; the inner cavity is provided with transverse reinforcing ribs connected to the outer wall and the inner wall.

[0016] Furthermore, the front panel lower plate includes an inclined surface connected to the front panel and a horizontal surface connected to the inclined surface and extending along the length direction of the vehicle body, the X-direction reinforcement ribs are arranged on the inclined surface and the horizontal surface, and the inclined surface and the horizontal surface are formed with mutually parallel profile reinforcement ribs, and the X-direction reinforcement ribs are connected to the profile reinforcement ribs.

[0017] Furthermore, a relatively arranged reinforcing plate is formed in the rear cavity, and the reinforcing plate includes a first extension portion connected to the front lower plate, a second extension portion connected to the bottom of the torsion box, and a main body portion connected to the first extension portion and the second extension portion; the reinforcing plate is Z-shaped.

[0018] Furthermore, the bottom of the torsion box is provided with two hanging platforms protruding downward, the hanging platforms are provided with hanging points, and a groove is formed between the two hanging platforms; the two hanging platforms and the groove are both U-shaped; reinforcing ribs are provided in the groove, and the side walls and bottom walls of the hanging platforms are arranged nearly vertically.

[0019] Furthermore, at least one of the chambers is provided with a cross reinforcement rib structure formed by crossing a plurality of reinforcement ribs, a closed structure is formed inside the cross reinforcement rib structure or between the cross reinforcement rib structure and the side wall of the chamber, and a sand discharge structure is provided at the lower part of the closed structure.

[0020] Furthermore, the sand discharge structure comprises a downwardly recessed guide groove arranged on the bottom wall of the chamber, and a sand discharge hole is provided at the lowest point of the guide groove.

[0021] Furthermore, the sand removal structure includes a semi-blind hole arranged at the bottom of the reinforcing rib.

[0022] Furthermore, a combined reinforcing rib is provided in the front cabin assembly, and the combined reinforcing rib includes a cast rib and a groove rib; the cast rib has a draft angle that gradually increases downward; the groove rib is arched upward in an inverted U shape, and the bottom of the cast rib is connected to the top of the groove rib; the length of the cast rib is less than or equal to 55 mm.

[0023] Furthermore, the material of the front engine compartment assembly is steel; the centrifugal casting uses a sand core as a mold, and vacuum adsorption technology is used during centrifugal pouring; the inner side of the longitudinal beam, the outer side of the longitudinal beam, the front wall cross beam, the front wall panel, the front wall lower plate and the main body of the torsion box are all thin-walled structures.

[0024] The present application also provides a vehicle, comprising the above-mentioned front cabin assembly.

[0025] The inner side of the longitudinal beam, the outer side of the longitudinal beam, the front wall cross beam, the front wall plate, the front wall lower plate and the torsion box of the front cabin assembly of the present application are integrally formed by centrifugal casting, and the front cabin body has a smooth transition and a high degree of parts integration. At the same time, the front cabin assembly is formed with a first chamber, a second chamber, a third chamber and a rear chamber, and the continuously closed chambers make the front cabin assembly have higher rigidity and strength and better collision force transmission effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the front cabin assembly of the present application.

[0027] Figure 2 yes Figure 1 Front view of the front nacelle assembly shown.

[0028] Figure 3 yes Figure 1 A top view of the front nacelle assembly is shown.

[0029] Figure 4 yes Figure 1 Bottom view of the front nacelle assembly shown.

[0030] Figure 5 yes Figure 1 The side view of the assembled front nacelle assembly and anti-collision beam assembly is shown.

[0031] Figure 6 yes Figure 1 A schematic diagram of another perspective of the front cabin assembly is shown.

[0032] Figure 7 yes Figure 6 A cross-sectional view of the front longitudinal beam of the front nacelle assembly is shown.

[0033] Figure 8 yes Figure 1 A schematic diagram of a portion of the front nacelle assembly is shown.

[0034] Fig. 9 yes Figure 4 A partial enlarged view of the front nacelle assembly at rectangle A is shown.

[0035] Fig.10 yes Figure 5 A cross-sectional view of the front nacelle assembly along line BB is shown.

[0036] Fig.11 yes Figure 8 A cross-sectional view of the front nacelle assembly along line CC is shown.

[0037] Fig.12 yes Figure 2 A cross-sectional view of the front nacelle assembly along line DD is shown.

[0038] Fig.13 yes Figure 5 A side view of the front cowl lower panel and torsion box of the front cabin assembly is shown.

[0039] Fig.14 yes Fig.13 A schematic diagram of the lower front panel and the torsion box of the front cabin assembly from another perspective is shown.

[0040] Fig.15 yes Figure 3 A cross-sectional view of the front nacelle assembly along line EE is shown.

[0041] Fig.16 yes Fig.15 An enlarged partial view of the front nacelle assembly is shown.

[0042] Fig.17 yes Figure 1 A schematic diagram of the shock absorber mount of the front nacelle assembly is shown.

[0043] Fig.18 yes Fig.17 Schematic diagram of the swing arm mounting portion of the shock absorber mount shown.

[0044] Fig.19 yes Fig.18 A schematic diagram of the interior of the swing arm mounting portion of the shock absorber mount is shown.

[0045] Fig. 20 yes Fig.18 A cross-sectional view of the shock absorber mount at the swing arm mounting portion is shown.

[0046] Fig.21 yes Figure 4 Schematic diagram of the bottom of the torsion box of the front nacelle assembly is shown.

[0047] Fig. 22 yes Fig.21 A bottom view of the bottom of the torsion box of the front nacelle assembly is shown.

[0048] Fig.23 yes Fig. 22 A cross-sectional view of the bottom of the torsion box of the front nacelle assembly along line FF is shown.

[0049] Fig.24 yes Fig. 22 Schematic diagram showing the torsion box of the front nacelle assembly with the bottom portion located inboard of the subframe mounting point.

[0050] Fig.25 yes Fig.24 Schematic diagram showing the torsion box of the front nacelle assembly with the bottom portion located outside of the subframe mounting point.

[0051] Fig.26 yes Fig.25A cross-sectional view of the bottom of the torsion box of the front nacelle assembly along line GG is shown.

[0052] Fig. 27 yes Fig.25 A cross-sectional view of the bottom of the torsion box of the front nacelle assembly along line HH is shown.

[0053] Fig.28 It is a cross-sectional schematic diagram of the combined reinforcement ribs of the front cabin assembly of the present application.

[0054] Description of Figure Numbers:

[0055] 100, first chamber; 200, second chamber; 300, third chamber; 301, reinforcing rib; 400, rear chamber; 401, reinforcing plate; 4011, first extension portion; 4012, second extension portion; 4013, main body; 402, reinforcing plate; 4021, first extension portion; 4022, second extension portion; 4023, main body; 500, fourth chamber; 600, fifth chamber; 601, first force transmission path; 602, second force transmission path; 603, third force transmission path; 604, Fourth force transmission path; 605, fifth force transmission path; 700, sixth chamber; 10, inner side of longitudinal beam; 101, installation hole of insert-type anti-collision beam assembly; 102, side wall; 11, flange plate; 111, installation hole of docking anti-collision beam assembly; 12, front opening; 13, guide fillet; 14, reinforcing rib; 20, outer side of longitudinal beam; 30, front wall cross beam; 40, front wall plate; 50, front wall lower plate; 501, inclined surface; 502, horizontal surface; 51, first support plate; 511, notch; 52, second support plate; 5 21. Notch; 53. X-direction reinforcement rib; 54. Profile reinforcement rib; 60. Torque box; 61. Hanging platform; 611. Hanging point; 612. Groove; 613. Side wall; 614. Bottom wall; 62. Reinforcement rib; 63. Reinforcement rib; 70. Shock absorber seat; 71. Wheel cover; 72. Swing arm mounting part; 711. Base; 7111. Outer wall; 7112. Inner wall; 7113. Inner mounting hole; 7114. Reinforcement rib; 7115. Reinforcement rib; 712. Mounting platform; 7121. Outer mounting hole; 712 2. Installation surface; 713. Support platform; 7131. Horizontal support surface; 7132. Side support surface; 714. U-shaped groove; 715. Inner cavity; 716. Transverse reinforcement rib; 80. Reinforcement rib; 81. Cross reinforcement rib structure; 82. Side wall; 83. Closed structure; 831. Guide groove; 832. Sand discharge hole; 833. Semi-blind hole; 84. Subframe mounting point; 85. Process hole; 90. Combined reinforcement rib; 91. Casting rib; 911. Bottom; 92. Groove rib; 921. Top; 922. U-shaped groove. DETAILED DESCRIPTION

[0056] Here, the technical solutions in the embodiments (or "implementation methods") of the present application will be described clearly and completely in conjunction with the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0057] If there are terms involving directional indications or positional relationships in the embodiments of the present application (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings); if the specific posture changes, the directional indication or positional relationship will also change accordingly. In addition, the terms "first" and "second" in the embodiments of the present application are only used for the purpose of convenience of description and cannot be understood as indicating or implying relative importance.

[0058] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the front engine compartment assembly includes the inner side of the longitudinal beam 10, the outer side of the longitudinal beam 20, the front wall cross beam 30, the front wall panel 40, the front wall lower plate 50 and the torque box 60 which are integrally formed by centrifugal casting. The centrifugal casting uses a sand core as a mold, and vacuum adsorption technology is used during centrifugal casting. The main bodies of the inner side of the longitudinal beam 10, the outer side of the longitudinal beam 20, the front wall cross beam 30, the front wall panel 40, the front wall lower plate 50 and the torque box 60 are all thin-walled structures.

[0059] The front section of the inner side 10 of the longitudinal beam and the front section of the outer side 20 of the longitudinal beam are enclosed to form a first chamber 100. The front wall cross beam 30 and the front wall plate 40 are enclosed to form a second chamber 200. The rear section of the inner side 10 of the longitudinal beam and the rear section of the outer side 20 of the longitudinal beam are enclosed to form a third chamber 300. The front wall lower plate 50 and the torsion box 60 are enclosed to form a rear chamber 400. The first chamber 100, the second chamber 200, the third chamber 300 and the rear chamber 400 are all closed thin-walled chambers.

[0060] According to the implementation mode of the present application, the thinnest wall of the front cabin assembly can be 0.8mm. The front cabin assembly is formed in one piece by sand casting, which has a simple design, convenient demoulding, and fast molding. In addition, multiple parts of the front cabin assembly are integrated into one piece, with a high degree of integration, which can simplify and shorten the design and manufacturing cycle. There are no overlapping lap edges on the one-piece front cabin assembly, and the main body of the front cabin assembly has a smooth transition and fewer sharp edges, which is convenient for wiring harness and pipeline design and saves space.

[0061] Multiple closed thin-walled cavities realize closed-mouth design. The force transmission path is a closed cavity and the closed cavity runs through all directions of the front cabin assembly. The integrated continuous closed cavity makes the structure have higher rigidity, strength and collision force transmission effect.

[0062] The material of the front engine room assembly is steel. The steel material has high strength and toughness, which can not only ensure the structural strength of the stress area and meet the energy transmission requirements, but also effectively bend and absorb energy to ensure safety, strength and rigidity under different working conditions. In the casting process, the semi-finished steel ingots developed are used as raw materials, which have a wide source and abundant reserves.

[0063] The front cabin assembly is made of one-piece cast steel. Sand casting is used, and the sand mold is assembled from multiple sets of sand cores. The sand core mold is simple and the material cost is low. The sand mold can be reused after being shattered, and the manufacturing cost of cast steel materials is low.

[0064] See also Figure 6 , Figure 7 , Figure 8 and Fig. 9 As shown, the front ends of the inner side 10 and the outer side 20 of the longitudinal beam are integrally formed with a flange plate 11, and the first chamber 100 is provided with a front end opening 12. The flange plate 11 is arranged around the front end opening 12. A butt-jointed anti-collision beam assembly mounting hole 111 is formed on the flange plate 11. The butt-jointed anti-collision beam assembly is butt-jointed with the flange plate 11, and is connected to the front longitudinal beam between the inner side 10 and the outer side 20 of the longitudinal beam through the butt-jointed anti-collision beam assembly mounting hole 111.

[0065] According to the implementation of the present application, four butt-jointed anti-collision beam assembly mounting holes 111 are provided on the flange plate 11. The four butt-jointed anti-collision beam assembly mounting holes 111 are arranged around the front end opening 12. Two butt-jointed anti-collision beam assembly mounting holes 111 are arranged above the front end opening 12, and the remaining two are arranged below the front end opening 12. In addition, one or more butt-jointed anti-collision beam assembly mounting holes 111 may also be provided, and the present application does not limit the number of butt-jointed anti-collision beam assembly mounting holes 111.

[0066] The front end of the first chamber 100 forms an insert-type anti-collision beam assembly mounting hole 101, that is, the insert-type anti-collision beam assembly mounting hole 101 is provided on the side wall of the front longitudinal beam. The insert-type anti-collision beam assembly can protrude into the first chamber 100 and be connected to the front longitudinal beam through the insert-type anti-collision beam assembly mounting hole 101. The insert-type anti-collision beam assembly guide fillet 13 is formed at the connection between the flange plate 11 and the first chamber 100 to guide the insert-type anti-collision beam assembly into the first chamber 100. A plurality of reinforcing ribs 14 are also integrally formed between the flange plate 11 and the side wall 102 of the first chamber 100.

[0067] According to the embodiment of the present application, four reinforcing ribs 14 are provided and are triangular, and the reinforcing ribs 14 are respectively provided in four directions of the front opening 12, namely, the top, bottom, left, and right. The reinforcing ribs 14 are located behind the flange plate 11. In addition, one or more reinforcing ribs 14 may also be provided.

[0068] The inserted anti-collision beam assembly is directly inserted into the first chamber 100 and connected to the front longitudinal beam through the inserted anti-collision beam assembly mounting hole 101 to achieve the Y-direction fastening of the front longitudinal beam and the inserted anti-collision beam assembly. The butt-jointed anti-collision beam assembly is butt-jointed with the front longitudinal beam in the X direction to achieve the X-direction fastening of the front longitudinal beam and the butt-jointed anti-collision beam assembly. Figure 6 As shown, the X direction is the length direction of the front longitudinal beam, that is, the length direction of the vehicle body, and also the driving direction of the vehicle. The Y direction is the width direction of the front longitudinal beam, that is, the width direction of the vehicle body. The front longitudinal beam of the front cabin assembly of the present application can be adapted to two anti-collision beam assemblies at the same time.

[0069] The dash cross beam 30 is located on the inner side of the longitudinal beam 10. The dash cross beam 30 is arranged along the width direction of the vehicle body. The dash cross beam 30 is connected to the dash panel 40 and encloses the second chamber 200. The dash panel 40 is perpendicular to the dash cross beam 30. The dash panel 40 is a single-layer plate structure, that is, a thin-walled structure.

[0070] See also Fig.10 , Fig.11 , Fig.12 , Fig.13 and Fig.14 As shown, the first support plate 51 and the second support plate 52 are integrally formed in the rear chamber 400. The first support plate 51 and the second support plate 52 extend in the front-to-back direction and are arranged at intervals. The front lower plate 50, the first support plate 51 and the torque box 60 together form a fourth chamber 500. The front lower plate 50, the first support plate 51, the second support plate 52 and the torque box 60 together form a fifth chamber 600. The front lower plate 50, the second support plate 52 and the torque box 60 together form a sixth chamber 700.

[0071] The first chamber 100 and the second chamber 200 form a first force transmission path 601. The first chamber 100 and the third chamber 300 form a second force transmission path 602. The first chamber 100 and the fourth chamber 500 form a third force transmission path 603. The first chamber 100 and the fifth chamber 600 form a fourth force transmission path 604. The first chamber 100 and the sixth chamber 700 form a fifth force transmission path 605.

[0072] There are three functional areas designed on the front cabin assembly: the crushing energy absorption area, the bending energy absorption area and the force transfer area.

[0073] The anti-collision beam assembly is arranged in the crushing energy absorption zone, and the anti-collision beam assembly is connected to the front longitudinal beam. The front section of the front longitudinal beam and the shock absorber seat 70 are located in the bending energy absorption zone. The front wall panel 40, the front wall lower panel 50 and the torsion box 60 are located in the force transmission zone. Multiple chambers run through the entire bending energy absorption zone and the force transmission zone.

[0074] When the vehicle body is subjected to external force on the front end of the longitudinal beam, it is transmitted backwards through the first chamber 100 to the rear chamber 400, and the rear chamber 400 is divided into the fourth chamber 500, the fifth chamber 600 and the sixth chamber 700. The force is transmitted laterally through the first force transmission path 601 and dispersed to the other side of the longitudinal beam. The force is transmitted obliquely upward through the second force transmission path 602 and dispersed to the A-pillar area of ​​the vehicle. The force is transmitted obliquely outward through the third force transmission path 603 and dispersed to the door sill side beam. The force is directly transmitted to the rear of the front cabin assembly through the fourth force transmission path 604. The force is transmitted obliquely inwardly through the fifth force transmission path 605 to the middle channel of the vehicle. The first chamber 100, the second chamber 200, the third chamber 300, the fourth chamber 500, the fifth chamber 600 and the sixth chamber 700 are all closed structures in the circumferential direction. The continuity of each chamber makes the force transmission of the front cabin assembly more efficient.

[0075] According to the embodiment of the present application, a plurality of reinforcing ribs 301 are integrally formed in the third chamber 300. The reinforcing ribs 301 are arranged at intervals along the inner wall surrounding the third chamber 300.

[0076] The first support plate 51 and the second support plate 52 are connected to the front lower plate 50 and the torque box 60, respectively. The front ends of the first support plate 51 and the second support plate 52 extend to the outer side 20 of the longitudinal beam and the inner side 10 of the longitudinal beam along the length direction of the vehicle body. The rear ends of the first support plate 51 and the second support plate 52 extend to the rear wall of the torque box 60 along the length direction of the vehicle body. A notch 511 and a notch 521 are formed between the first support plate 51 and the second support plate 52 and the rear wall of the torque box 60. The lower parts of the rear ends of the first support plate 51 and the second support plate 52 are connected to the rear wall of the torque box 60. The notch 511 is formed between the upper part of the rear end of the first support plate 51 and the rear wall of the torque box 60. The notch 521 is formed between the upper part of the rear end of the second support plate 52 and the rear wall of the torque box 60. The notch 511 and the notch 521 are smooth arc-shaped, please refer to Fig.14 The rear wall of the torsion box 60 is not shown in the figure. The fourth chamber 500, the fifth chamber 600 and the sixth chamber 700 are connected through the gap 511 and the gap 521. The gap 511 and the gap 521 can reduce the number of sand cores when the sand cores are molded.

[0077] A plurality of X-direction reinforcing ribs 53 are formed on the front lower plate 50. The X-direction reinforcing ribs 53 are arranged above the first support plate 51 and the second support plate 52. The X-direction reinforcing ribs 53 are V-shaped and the height of the X-direction reinforcing ribs 53 gradually decreases from front to back. The front lower plate 50 includes an inclined surface 501 and a horizontal surface 502 connected to the front plate 40. The horizontal surface 502 is connected to the inclined surface 501 and extends along the length direction of the vehicle body. The X-direction reinforcing ribs 53 are arranged on the inclined surface 501 and the horizontal surface 502. The inclined surface 501 and the horizontal surface 502 are formed with mutually parallel profile reinforcing ribs 54, and the X-direction reinforcing ribs 53 are connected to the profile reinforcing ribs 54.

[0078] See also Fig.15 and Fig.16 As shown, a Z-shaped reinforcing plate 401 and a reinforcing plate 402 are formed in the rear chamber 400. The reinforcing plate 401 includes a first extension portion 4011 connected to the front lower plate 50, a second extension portion 4012 connected to the bottom of the torque box 60, and a main body portion 4013 connected to the first extension portion 4011 and the second extension portion 4012. The reinforcing plate 402 includes a first extension portion 4021 connected to the front lower plate 50, a second extension portion 4022 connected to the bottom of the torque box 60, and a main body portion 4023 connected to the first extension portion 4021 and the second extension portion 4022.

[0079] The parallel profile reinforcement ribs 54 are staggered front and back to avoid the deformation induction concentration of the footrest area of ​​the front lower panel 50. The X-direction reinforcement ribs 53 on the front lower panel 50 gradually decrease in height from front to back to induce the force of the front lower panel 50 to be transmitted backward. According to the embodiment of the present application, the thickness of the reinforcement plate 401 and the reinforcement plate 402 and the thickness of the first support plate 51 and the second support plate 52 are combined with safety simulation adaptation to achieve a lightweight combination.

[0080] See also Fig.21 , Fig. 22 and Fig.23 As shown, the bottom of the torque box 60 is provided with two hanging platforms 61 protruding downward. The hanging platforms 61 are provided with hanging points 611, and a groove 612 is formed between the two hanging platforms 61. The two hanging platforms 61 and the groove 612 are both U-shaped. A reinforcing rib 62 is provided in the groove 612. A plurality of reinforcing ribs 62 are arranged in parallel. The reinforcing rib 62 is U-shaped to fit the groove 612. The side wall 613 and the bottom wall 614 of the hanging platform 61 are arranged nearly vertically.

[0081] According to the embodiment of the present application, a reinforcing rib 63 is also provided on the outer side of the hanging platform 61. The reinforcing rib 63 is connected to the hanging platform 61 and the bottom of the torsion box 60. The reinforcing rib 63 is triangular. The reinforcing rib 63 can be provided as one or more.

[0082] The two hanging platforms 61 and the grooves 612 are reversely intersecting and continuous "U"-shaped grooves, which can effectively improve the local rigidity and strength of the hanging platform 61. According to the embodiment of the present application, the strength can be improved by adjusting the depth of the grooves 612.

[0083] See also Fig.17 , Fig.18 , Fig.19 and Fig. 20 As shown, the front cabin assembly includes a shock absorber seat 70. The outer side of the longitudinal beam 20 includes the shock absorber seat 70. The shock absorber seat 70 includes an integrally formed wheel cover 71 and a swing arm mounting portion 72. The swing arm mounting portion 72 includes a base 711 formed on the wheel cover 71, a mounting platform 712 formed on the base 711 and protruding outward, and a support platform 713 connected to the lower portion of the mounting platform 712.

[0084] The base 711 and the support platform 713 are both thin-walled structures. The mounting platform 712 is a partially thickened structure, and an external mounting hole 7121 is provided on the mounting platform 712. The support platform 713 includes horizontal support surfaces 7131 located on both sides of the mounting platform 712 and side support surfaces 7132 connected to the mounting surface 7122 of the mounting platform 712. A U-shaped groove 714 is formed between the base 711 and the side support surface 7132. The provision of the horizontal support surface 7131 can reduce the height of the lever arm at the mounting point of the swing arm and improve the structural rigidity of the mounting platform 712. The U-shaped groove 714 can strengthen the structural rigidity of the mounting platform 712.

[0085] The base 711 is a double-layer structure, that is, a cavity is provided inside. The base 711 includes an outer wall 7111 and an inner wall 7112. An inner cavity 715 is formed between the outer wall 7111 and the inner wall 7112. An inner mounting hole 7113 is formed on the inner wall 7112. An outer mounting hole 7121 is formed on the outer wall 7111, and the inner mounting hole 7113 corresponds to the outer mounting hole 7121. Machine threads are added in the inner mounting hole 7113 and the outer mounting hole 7121, so that the matching accuracy at the mounting platform 712 is high, the thread strength is high, and no standard parts need to be assembled.

[0086] The inner side of the wheel cover 71 is provided with reinforcing ribs 7114 and 7115 arranged in the vertical direction. The reinforcing ribs 7114 and 7115 are connected to the outer wall 7111 and the inner wall 7112. The inner cavity 715 is provided with transverse reinforcing ribs 716 connected to the outer wall 7111 and the inner wall 7112. According to the embodiment of the present application, the inner cavity 715 is a "mouth" shaped cavity. The setting of the "mouth" shaped cavity can not only improve the rigidity of the mounting platform 712, but also improve the strength of the reinforcing ribs 7114 and 7115, thereby improving the strength of the shock absorber seat 70 and the sand core.

[0087] According to the implementation mode of the present application, when the height of the shock absorber seat 70 changes, the height of the top surface of the wheel cover 71 of the shock absorber seat 70 can be adjusted by quickly replacing the upper and lower sand cores of the shock absorber seat 70, which is simple to switch and easy to operate.

[0088] See also Fig.24 , Fig.25 , Fig.26 , Fig. 27 and Fig.28 As shown, at least one chamber is provided with a cross reinforcement rib structure 81 formed by crossing a plurality of reinforcement ribs 80, a closed structure 83 is formed inside the cross reinforcement rib structure 81 or between the cross reinforcement rib structure 81 and the side wall 82 of the chamber, and a sand discharge structure is provided at the bottom of the closed structure 83.

[0089] According to the embodiment of the present application, the cross reinforcement rib structure 81 is arranged around the sub-frame mounting point 84, and the cross reinforcement rib structure 81 is the inner side of the rear chamber 400 with the sub-frame mounting point 84 as the center and radiates reinforcement ribs around. The reinforcement ribs 80 located in front of the sub-frame mounting point 84 are used to resist deformation caused by external collision force. The reinforcement ribs 80 located at both ends and the rear side of the sub-frame mounting point 84 are used to transfer the external collision force to the side wall of the front cabin assembly. The side wall of the rear chamber 400 provides support for the sub-frame mounting point 84 to ensure the strength of the sub-frame mounting point 84.

[0090] The sand discharge structure includes a guide groove 831 that is recessed downward and is arranged on the bottom wall of the chamber, and a sand discharge hole 832 is provided at the lowest point of the guide groove 831. According to the embodiment of the present application, the guide groove 831 can be designed as a structure with one end high and the other end low, or a structure with both ends high and the middle low. The sand discharge hole 832 is provided at the lowest point of the guide groove 831 for sand discharge and subsequent liquid discharge. The guide groove 831 can also be arranged at a position close to the process hole 85, and the guide groove 831 can flow sand back to the process hole 85 for sand discharge.

[0091] According to the embodiment of the present application, the sand discharge structure includes a semi-blind hole 833 disposed at the bottom of the reinforcing rib 80. For a complex closed structure 83, a semi-blind hole 833 can be provided at the bottom of the reinforcing rib 80. The semi-blind hole 833 can discharge the sand or liquid of two adjacent closed structures 83. At the same time, the semi-blind hole 833 does not damage the structure of the reinforcing rib 80, thereby ensuring the strength of the closed structure 83.

[0092] A combined reinforcement rib 90 is provided in the front cabin assembly, and the combined reinforcement rib 90 includes a casting rib 91 and a groove rib 92. The casting rib 91 has a draft angle that gradually increases downward. The groove rib 92 is arched upward in an inverted U shape, and the groove rib 92 forms a U-shaped groove 922; the bottom 911 of the casting rib 91 is connected to the top 921 of the groove rib 92. The length of the casting rib 91 is less than or equal to 55 mm.

[0093] According to the implementation mode of the present application, the draft angle is greater than or equal to 0.5°. The thickness of the casting rib 91 will be greater than or equal to 2 mm. The casting rib 91 will gradually thicken when the casting rib 91 is drafted at a certain angle. The thickness of the bottom 911 is the largest. However, if the draft depth is too high, the middle and lower parts of the casting rib 91 will be abnormally thickened, resulting in redundant weight. Through the design scheme of the combination of the casting rib 91 and the groove rib 92, the depth of the casting rib 91 can be controlled, thereby achieving a lightweight design.

[0094] According to an embodiment of the present application, the combined reinforcement rib 90 may be a cross reinforcement rib structure 81 .

[0095] The present application also provides a vehicle, comprising the above-mentioned front cabin assembly.

[0096] The longitudinal beam inner side 10, longitudinal beam outer side 20, front wall cross beam 30, front wall panel 40, front wall lower panel 50 and torsion box 60 of the front engine compartment assembly of the present application are integrally formed by centrifugal casting, and the overall transition of the front engine compartment assembly is smooth and the parts integration is high. At the same time, the front engine compartment assembly is formed with a first chamber 100, a second chamber 200, a third chamber 300 and a rear chamber 400, and the continuous closed chambers make the front engine compartment assembly have higher rigidity and strength and better collision force transmission effect.

[0097] It should be noted that the technical solutions or technical features described in the above embodiments can be combined or supplemented with each other without causing conflicts. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the drawings; all modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of this application should be included in the scope of protection of this application.

Claims

1. A front cabin assembly, characterized in that: The invention comprises the inner side of the longitudinal beam, the outer side of the longitudinal beam, the front wall cross beam, the front wall plate, the front wall lower plate and the torsion box which are integrally formed by centrifugal casting; the front section of the inner side of the longitudinal beam and the front section of the outer side of the longitudinal beam are combined to form a first chamber; the front wall cross beam and the front wall plate are combined to form a second chamber; the rear section of the inner side of the longitudinal beam and the rear section of the outer side of the longitudinal beam are combined to form a third chamber; the front wall lower plate and the torsion box are combined to form a rear chamber; the centrifugal casting uses a sand core as a mold, and vacuum adsorption technology is used during centrifugal casting; the rear chamber A first support plate and a second support plate extending in the front-to-back direction and arranged at intervals are integrally formed; the front enclosure lower plate, the first support plate and the torsion box together form a fourth chamber; the front enclosure lower plate, the first support plate, the second support plate and the torsion box together form a fifth chamber; the front enclosure lower plate, the second support plate and the torsion box together form a sixth chamber; the first chamber forms a force transmission path with the second chamber, the third chamber, the fourth chamber, the fifth chamber and the sixth chamber respectively.

2. The front cabin assembly according to claim 1, characterized in that: The first support plate and the second support plate are connected to the front lower plate and the torsion box respectively; a gap is formed between the first support plate, the second support plate and the rear wall of the torsion box, and the fourth chamber, the fifth chamber and the sixth chamber are connected through the gap.

3. The front nacelle assembly according to claim 1, characterized in that: A plurality of X-direction reinforcing ribs are formed on the front enclosure lower plate; the X-direction reinforcing ribs are arranged above the first support plate and the second support plate, and the X-direction reinforcing ribs are V-shaped and their height gradually decreases from front to back.

4. The front nacelle assembly according to claim 3, characterized in that: The front ends of the first support plate and the second support plate extend to the outer side and the inner side of the longitudinal beam along the length direction of the vehicle body; the rear ends of the first support plate and the second support plate extend to the rear wall of the torsion box along the length direction of the vehicle body.

5. The front nacelle assembly according to claim 1, characterized in that: The first chamber, the second chamber, the third chamber, the fourth chamber, the fifth chamber, and the sixth chamber are all closed structures in the circumferential direction.

6. The front nacelle assembly according to claim 1, characterized in that: A flange plate is integrally formed at the inner side of the longitudinal beam and the front end of the outer side of the longitudinal beam, and the flange plate is arranged around the front end opening of the first cavity; a docking type anti-collision beam assembly mounting hole is formed on the flange plate, and a plurality of reinforcing ribs are integrally formed between the flange plate and the side wall of the first cavity.

7. The front nacelle assembly according to claim 1, characterized in that: A flange plate is integrally formed at the inner side of the longitudinal beam and the front end of the outer side of the longitudinal beam, and a guide fillet of an inserted anti-collision beam assembly is formed at the connection between the flange plate and the first cavity; and a mounting hole of the inserted anti-collision beam assembly is formed at the front end of the first cavity.

8. The front nacelle assembly according to claim 1, characterized in that: The outer side of the longitudinal beam includes a shock absorber seat, and the shock absorber seat includes an integrally formed wheel cover and a swing arm mounting portion; the swing arm mounting portion includes a base formed on the wheel cover, a mounting platform formed on the base and protruding outward, and a support platform connected to the lower part of the mounting platform.

9. The front nacelle assembly according to claim 8, characterized in that: The base and the support platform are both thin-walled structures, the mounting platform is a locally thickened structure, and an external mounting hole is provided on the mounting platform; the support platform includes horizontal supporting surfaces located on both sides of the mounting platform and side supporting surfaces connected to the mounting surfaces of the mounting platform; a U-shaped groove is formed between the base and the side supporting surfaces.

10. The front nacelle assembly according to claim 8, characterized in that: The base is a double-layer structure, which includes an outer wall and an inner wall, an inner cavity is formed between the outer wall and the inner wall, and an inner mounting hole is formed on the inner wall; the inner side of the wheel cover is provided with reinforcing ribs connected to the outer wall and the inner wall and arranged in the vertical direction; the inner cavity is provided with transverse reinforcing ribs connected to the outer wall and the inner wall.

11. The front nacelle assembly according to claim 4, characterized in that: The lower front panel includes an inclined surface connected to the front panel and a horizontal surface connected to the inclined surface and extending along the length direction of the vehicle body. The X-direction reinforcing ribs are arranged on the inclined surface and the horizontal surface. The inclined surface and the horizontal surface are formed with mutually parallel profile reinforcing ribs, and the X-direction reinforcing ribs are connected to the profile reinforcing ribs.

12. The front nacelle assembly according to claim 1, characterized in that: A relatively arranged reinforcing plate is formed in the rear cavity, and the reinforcing plate includes a first extension portion connected to the front lower plate, a second extension portion connected to the bottom of the torsion box, and a main body portion connected to the first extension portion and the second extension portion; the reinforcing plate is Z-shaped.

13. The front nacelle assembly according to claim 1, characterized in that: The bottom of the torsion box is provided with two hanging platforms protruding downward, the hanging platforms are provided with hanging points, and a groove is formed between the two hanging platforms; the two hanging platforms and the groove are both U-shaped; reinforcing ribs are provided in the groove, and the side walls and bottom walls of the hanging platforms are arranged nearly vertically.

14. The front nacelle assembly according to claim 1, characterized in that: At least one of the chambers is provided with a cross reinforcement rib structure formed by a plurality of cross reinforcement ribs, a closed structure is formed inside the cross reinforcement rib structure or between the cross reinforcement rib structure and the side wall of the chamber, and a sand discharge structure is provided at the bottom of the closed structure.

15. The front nacelle assembly according to claim 14, characterized in that: The sand discharge structure comprises a guide groove which is arranged on the bottom wall of the chamber and is recessed downwards, and a sand discharge hole is provided at the lowest point of the guide groove.

16. The front nacelle assembly according to claim 14, characterized in that: The sand discharge structure includes a semi-blind hole arranged at the bottom of the reinforcing rib.

17. The front nacelle assembly according to claim 1, characterized in that: The front cabin assembly is provided with a combined reinforcing rib, which includes a cast rib and a groove rib; the cast rib has a draft angle that gradually increases downward; the groove rib is arched upward in an inverted U shape, and the bottom of the cast rib is connected to the top of the groove rib; the length of the cast rib is less than or equal to 55 mm.

18. The front nacelle assembly according to claim 1, characterized in that: The material of the front engine compartment assembly is steel; the inner side of the longitudinal beam, the outer side of the longitudinal beam, the front wall cross beam, the front wall plate, the front wall lower plate and the main body of the torsion box are all thin-walled structures.

19. A vehicle, characterized in that: Comprising the front nacelle assembly according to any one of claims 1 to 18.

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