A front longitudinal beam structure integrating the function of a subframe and a front engine compartment assembly

Abstract

The present invention provides a front longitudinal beam structure and a front engine compartment assembly integrating the function of a subframe. The front longitudinal beam structure is symmetrically arranged along the X0 axis of the vehicle coordinate system and includes: a longitudinal beam and a torque box; the longitudinal beam is in a square shape, one end of the longitudinal beam is connected to the torque box, and reinforcing ribs are arranged on the inner and outer sides in the Y direction; the front longitudinal beam structure is provided with a front suspension upper swing arm mounting point, a front suspension lower swing arm mounting point, a front shock absorber mounting point and a powertrain mounting point; wherein, the front suspension upper swing arm mounting point is arranged at the outer top of the front longitudinal beam structure, the front suspension lower swing arm mounting point is arranged at the bottom of the longitudinal beam, the front shock absorber mounting point is arranged at the X-negative adjacent part of the front suspension upper swing arm mounting point, and the powertrain mounting point is arranged on the inner side of the longitudinal beam. Through the front longitudinal beam structure and the front engine compartment assembly provided by the present invention, the strength of the front longitudinal beam structure is improved, the original subframe mounting points can be integrated, the number of parts is reduced, and the weight and manufacturing cost of the whole vehicle are reduced.

Description

Technical Field

[0001] The present invention relates to the field of automotive design and manufacturing, and particularly to a front longitudinal beam structure and a front engine compartment assembly integrating the function of a subframe. Background Art

[0002] With the progress of the times, automobiles have become an important means of transportation in people's daily lives. Among the components of an automobile, the subframe can be regarded as the skeleton of the axle and is a part of the axle. The subframe is not a complete vehicle frame, but only a bracket for supporting the axle and suspension, enabling the axle and suspension to be connected to the "main vehicle frame" through it. The function of the subframe is to block vibration and noise and reduce their direct entry into the passenger compartment. In a traditional load-bearing body without a subframe, its suspension is directly connected to the vehicle body steel plate. Therefore, the suspension swing arm mechanism of the axle is in the form of loose parts rather than an assembly. After the emergence of the subframe, the suspension can be first assembled on the subframe to form a front subframe assembly, and then this assembly can be installed on the vehicle body together. The front engine compartment frame structure is an important part of the vehicle body frame. While carrying various components in the front engine compartment, it also plays roles such as absorbing energy, transmitting energy, and providing sufficient stiffness to the vehicle body frame during a collision. In the traditional technology, the front subframe and the front engine compartment frame structure are independent of each other and are connected together by bolts. The front subframe mainly undertakes the installation functions of the front suspension system, the power assembly, and the steering system and provides performance assistance to the vehicle body. Functionally, the front subframe and the front engine compartment frame structure are independent of each other, which leads to more structural redundancy, resulting in a higher vehicle weight and manufacturing cost. By integrating the installation structure of the original subframe into the front longitudinal beam, the layout of the subframe can be cancelled to simplify the front engine compartment structure. However, with the increase of the original subframe installation structure in the front longitudinal beam and the improvement of the integration degree of the front longitudinal beam, the strength requirement of the front longitudinal beam increases greatly. The existing front longitudinal beam structure design is not sufficient to withstand the layout of the original subframe installation points at the same time. There is an urgent need to develop a high-strength integrated front longitudinal beam structure to meet the strength requirement after the front longitudinal beam integrates the subframe installation structure.

[0003] In view of the above problems, the present invention is specifically proposed. Summary of the Invention

[0004] The present invention provides a front longitudinal beam structure and an automobile integrating the function of a subframe, aiming to solve the problems in the prior art that the front subframe structure and the front engine compartment structure are independent of each other, resulting in structural redundancy, a larger vehicle weight, and a higher manufacturing cost.

[0005] In view of the above, the present invention provides a front longitudinal beam structure integrating the function of a subframe, integrating the installation functions of the front subframe in the prior art for the front suspension system, powertrain, and steering system into the front longitudinal beam structure, greatly reducing the number of vehicle components, and reducing the vehicle weight and manufacturing cost. On the other hand, the present invention provides a front engine compartment assembly. By arranging the front longitudinal beam structure in the front engine compartment assembly, the front engine compartment assembly can meet the installation functions of the front suspension system, powertrain, and steering system without arranging a subframe.

[0006] In a first aspect, the present application first provides a front longitudinal beam structure integrating the function of a subframe, which is symmetrically arranged along the X0 axis of the vehicle coordinate system, and includes:

[0007] A longitudinal beam and a torque box;

[0008] The longitudinal beam is in the shape of a square body. One end of the longitudinal beam is connected to the torque box, and reinforcing ribs are arranged on the inner and outer sides in the Y direction to improve the load-bearing strength of the front longitudinal beam structure;

[0009] The front longitudinal beam structure is provided with front suspension upper arm mounting points, front suspension lower arm mounting points, front shock absorber mounting points, and powertrain mounting points;

[0010] Among them, the front suspension upper arm mounting points are arranged at the outer top of the front longitudinal beam structure, the front suspension lower arm mounting points are arranged at the bottom of the longitudinal beam, the front shock absorber mounting points are arranged at the X-negative adjacent part of the front suspension upper arm mounting points, and the powertrain mounting points are arranged on the inner side of the longitudinal beam.

[0011] In an optional solution of the present application, the longitudinal beam is made of aluminum alloy material 6082-T6, the thickness of the longitudinal beam is not less than 3 mm, the side wall thickness of the longitudinal beam is 4 mm - 7 mm, the width of the reinforcing ribs is 3 mm - 6 mm, and the thickness of each mounting point position of the longitudinal beam is greater than the thickness of the longitudinal beam.

[0012] In an optional solution of the present application, in the longitudinal beam, one end connected to the torque box is provided with a first extension part. A concave part in the Z direction is designed at the bottom of the first extension part for arranging the steering structure of the vehicle, and threaded holes are arranged on the side part of the first extension part for connecting the torque box.

[0013] In an optional solution of the present application, in the torque box, a first mounting hole is arranged on the outer side of one end connected to the longitudinal beam. Threaded holes are arranged on the inner wall of the first mounting hole for cooperating with the longitudinal beam for mounting the front suspension upper arm of the vehicle.

[0014] In an optional solution of the present application, the longitudinal beam is provided with transverse ribs and longitudinal ribs, and the transverse ribs and longitudinal ribs are cross-distributed, and the reinforcing ribs overlap with the transverse ribs and longitudinal ribs to jointly enhance the load-bearing strength of the longitudinal beam.

[0015] In an alternative embodiment of the present application, the upper arm mounting points of the front suspension include a first upper arm mounting point and a second upper arm mounting point. The first upper arm mounting point is provided on the longitudinal bar of the longitudinal beam, and the second upper arm mounting point is provided in the first mounting hole of the torque box.

[0016] In an alternative embodiment of the present application, the longitudinal beam is provided with a through hole for the drive shaft, which is arranged in the negative Z direction of the first upper arm mounting point and is used for the drive shaft of the vehicle to pass through to adapt to the installation of the vehicle's drive shaft.

[0017] In an alternative embodiment of the present application, the two ends of the bottom of the longitudinal beam are provided with a second extension part and a third extension part. The second extension part and the third extension part have the same extension degree. The second extension part and the third extension part are provided with second mounting holes, and the lower arm mounting points of the front suspension are arranged on the second extension part and the third extension part.

[0018] In an alternative embodiment of the present application, the inner side of the longitudinal beam is provided with a fourth extension part, which is in a triangular ring shape. The triangular end of the fourth extension part is provided with a third mounting hole, and the center point of the fourth extension part is provided with a fourth mounting hole. The power assembly mounting point is arranged on the fourth extension part.

[0019] In an alternative embodiment of the present application, a first crossbeam connection point is further provided in the positive Z direction of the position of the fourth extension part of the longitudinal beam for connecting the front upper crossbeam of the vehicle. The second extension part and the fourth extension part are aligned in the Z direction, and a second crossbeam connection point is arranged for connecting the front lower crossbeam of the vehicle. The third extension part is arranged with a third crossbeam connection point for connecting the rear suspension mounting crossbeam of the vehicle.

[0020] In an alternative embodiment of the present application, a fifth extension part is provided at the outer top of the longitudinal beam. The fifth extension part is a symmetrical plate-shaped body, and the plate-shaped body is provided with a fifth mounting hole. The front shock absorber mounting point is arranged on the fifth extension part.

[0021] In an alternative embodiment of the present application, a plurality of sixth mounting holes are arranged at one end of the longitudinal beam away from the torque box for connecting the front bumper beam module of the vehicle.

[0022] In the second aspect of the present application, a front engine compartment assembly is further provided, which includes the front longitudinal beam structure as described above, and further includes a front upper crossbeam, a front bulkhead crossbeam, a front lower crossbeam and a rear suspension mounting crossbeam. The front upper crossbeam, the front bulkhead crossbeam, the front lower crossbeam and the rear suspension mounting crossbeam are connected between the symmetrically arranged front longitudinal beam structures.

[0023] The present application further provides a vehicle, which includes the front engine compartment assembly as described above.

[0024] In summary, a front longitudinal beam structure and a front engine compartment assembly integrating the function of a subframe provided by the present application design reinforcing ribs on the inner and outer sides in the Y direction of the longitudinal beam to improve the load-bearing capacity of the front longitudinal beam structure. The front suspension upper arm mounting point, the front suspension lower arm mounting point, the front shock absorber mounting point and the powertrain mounting point are arranged on the front longitudinal beam structure, and the front longitudinal beam structure is optimized. The strength of the front longitudinal beam structure can bear the layout of the mounting points of the front suspension system, the powertrain and the steering system at the same time. The front engine compartment assembly is highly integrated and no longer depends on the front subframe to install the front suspension system, the powertrain and the steering system. The number of parts of the whole vehicle is greatly reduced, and the weight and manufacturing cost of the whole vehicle are reduced.

[0025] Other features and advantages of the embodiments of the present invention will be described in the subsequent specific implementation part. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific implementation manners of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific implementation manners or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0027] Figure 1 It is a schematic structural diagram of a prior art front engine compartment module provided exemplarily in the embodiments of the present invention;

[0028] Figure 2 It is a schematic installation structure diagram of a front longitudinal beam structure provided exemplarily in the embodiments of the present invention;

[0029] Figure 3 It is a schematic structural diagram of a front longitudinal beam structure connecting chassis accessories provided exemplarily in the embodiments of the present invention;

[0030] Figure 4a It is a schematic layout diagram of the reinforcing ribs provided exemplarily in the embodiments of the present invention;

[0031] Figure 4b It is a schematic layout diagram of the reinforcing ribs provided exemplarily in the embodiments of the present invention;

[0032] Figure 4c It is a schematic layout diagram of the reinforcing ribs provided exemplarily in the embodiments of the present invention;

[0033] Figure 5 It is a schematic overall structure diagram of the longitudinal beam provided exemplarily in the embodiments of the present invention;

[0034] Figure 6 It is a schematic installation structure diagram of the chassis accessories provided exemplarily in the embodiments of the present invention;

[0035] Figure 7 This is a schematic diagram of the overall structure of the front engine compartment assembly provided exemplarily in the embodiments of the present invention.

[0036] In the above drawings, the list of components represented by each reference numeral is as follows:

[0037] 100, front longitudinal beam structure; 10, longitudinal beam;

[0038] 101, front suspension upper arm mounting point; 102, front suspension lower arm mounting point;

[0039] 103, front shock absorber mounting point; 104, powertrain mounting point;

[0040] 301, front shock absorber; 302, front suspension lower arm;

[0041] 303, front suspension upper arm; 304, steering knuckle;

[0042] 3011, pin; 11, first extension;

[0043] 111, recess; 40, threaded hole;

[0044] 22, first mounting hole; 21, reinforcing rib;

[0045] 12, cross rib; 13, longitudinal rib;

[0046] 1011, first upper arm mounting point; 1012, second upper arm mounting point;

[0047] 23, groove; 14, drive shaft through hole;

[0048] 15, second extension; 16, third extension;

[0049] 151, second mounting hole; 17, fourth extension;

[0050] 1041, third mounting hole; 1042, fourth mounting hole;

[0051] 110, first cross beam connection point; 120, second cross beam connection point;

[0052] 130, third cross beam connection point; 18, fifth extension;

[0053] 181, fifth mounting hole; 19, sixth mounting hole;

[0054] 1000, front engine compartment assembly; 1001, front upper cross beam;

[0055] 1002, front bulkhead cross beam; 1003, front lower cross beam;

[0056] 1004, Rear suspension mounting crossbeam; 20, Torque box;

[0057] 105, Reinforcing rib. Detailed implementation manner

[0058] In order to make the above and other features and advantages of the present invention clearer, the present invention will be further described below with reference to the accompanying drawings. It should be understood that the specific embodiments given herein are for the purpose of explaining to those skilled in the art, and are merely exemplary and not restrictive.

[0059] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present invention.

[0060] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0061] It should be noted that the coordinate descriptions such as "X direction, Y direction, Z direction" mentioned in the description of the present invention are all interpreted with reference to the vehicle coordinate system, that is, the straight line where the front of the vehicle is located is the X direction, the axial direction of the front wheel is the Y direction, and the direction perpendicular to the ground is the Z direction, where the positive X direction is the rear of the vehicle, the negative X direction is the front of the vehicle, the positive Z direction is perpendicular to the ground upward, and the negative Z direction is perpendicular to the ground downward.

[0062] A general concept of this embodiment is to provide a front longitudinal beam structure 100 and a front engine compartment assembly 1000 integrating the function of a subframe. By optimizing the design of the front longitudinal beam structure 100, the installation functions of the traditional front subframe for the front suspension system, the powertrain, and the steering system are integrated into the front longitudinal beam structure 100, aiming to solve the problems in the prior art that the front subframe structure and the front engine compartment structure are independent of each other, resulting in structural redundancy, a relatively large vehicle weight, and a high manufacturing cost.

[0063] Please refer to Figures 2 to 7, in the embodiment provided by the present invention, a front longitudinal beam structure 100 integrating the function of a subframe is symmetrically arranged along the X0 axis of the vehicle coordinate system, and includes:

[0064] A longitudinal beam 10 and a torque box 20;

[0065] The longitudinal beam 10 is in a square shape. One end of the longitudinal beam 10 is connected to the torque box 20. Reinforcing ribs 105 are arranged on the inner and outer sides in the Y direction of the longitudinal beam 10 to improve the load-bearing strength of the front longitudinal beam structure 100;

[0066] On the front longitudinal beam structure 100, there are arranged a front suspension upper arm mounting point 101, a front suspension lower arm mounting point 102, a front shock absorber mounting point 103 and a powertrain mounting point 104 to mount the front suspension upper arm 303, the front suspension lower arm 302, the front shock absorber 301 and the powertrain;

[0067] Among them, the front suspension upper arm mounting point 101 is arranged at the outer top of the front longitudinal beam structure 100, the front suspension lower arm mounting point 102 is arranged at the bottom of the longitudinal beam 10, and the front shock absorber mounting point 103 is arranged at the X-negative adjacent part of the front suspension upper arm mounting point 101,

[0068] The powertrain mounting point 104 is arranged on the inner side of the longitudinal beam 10.

[0069] In a general concept of the present invention, the front longitudinal beam structure 100 is divided into two major components: the longitudinal beam 10 and the torque box 20. Reinforcing ribs 105 are arranged on the inner and outer sides in the Y direction of the longitudinal beam 10 to improve the load-bearing strength of the front longitudinal beam structure 100. Among them, the longitudinal beam 10 is provided with a powertrain mounting point 104 to adapt to the installation of the powertrain; the longitudinal beam 10 is provided with a front shock absorber mounting point 103 and a front suspension lower arm mounting point 102, and the torque box 20 and the longitudinal beam 10 are provided with a front suspension upper arm mounting point 101 to adapt to the installation of the front shock absorber 301, the front suspension lower arm 302 and the front suspension upper arm 303 in the front suspension system of the vehicle. A steering knuckle 304 is connected between the front suspension lower arm 302 and the front suspension upper arm 303. By designing the reinforcing ribs 105 on the side wall of the longitudinal beam 10, the function of the traditional front subframe is integrated into the front longitudinal beam structure 100, so that in addition to connecting the cross beam, the front longitudinal beam structure 100 also has the functions of directly connecting the powertrain, the front suspension system and the steering structure. The strength of the front longitudinal beam structure 100 is enhanced, which can meet the strength requirements of the integrated subframe, reduce the number of parts, and thus reduce the vehicle weight and manufacturing cost.

[0070] The following elaborates on each structure in detail.

[0071] A front longitudinal beam structure 100 integrating the function of a subframe is symmetrically arranged along the X0 axis of the vehicle coordinate system, and includes: a longitudinal beam 10 and a torque box 20. The longitudinal beam 10 is a rectangular body, and one end is connected to the torque box 20. The front longitudinal beam structure 100 is provided with a front suspension upper arm mounting point 101, a front suspension lower arm mounting point 102, a front shock absorber mounting point 103, and a powertrain mounting point 104 to mount the front suspension upper arm 303, the front suspension lower arm 302, the front shock absorber 301, and the powertrain. Among them, the front suspension upper arm 303 is connected by two points and is arranged at the outer top of the front longitudinal beam structure 100; the front suspension lower arm 302 is connected by two points, and the front suspension lower arm mounting point 102 is arranged at the bottom of the longitudinal beam 10; the front suspension upper arm 303 and the front suspension lower arm 302 are connected by a steering knuckle. The function of the steering knuckle 304 is to bear the load at the front of the vehicle, support and drive the front wheels to rotate around the kingpin to steer the vehicle. The front shock absorber mounting point 103 is arranged at the X-negative adjacent part of the front suspension upper arm mounting point 101 and is fixed by a pin 3011; the powertrain mounting point 104 is arranged inside the longitudinal beam 10. Through the design of the front longitudinal beam structure 100, while the front longitudinal beam structure 100 retains the function of connecting the cross beam and bearing the load of the traditional front longitudinal beam, the strength of the front longitudinal beam structure 100 is enhanced, which can meet the strength requirements of the integrated subframe, and integrates the functions of connecting the powertrain, the front suspension system, and the steering structure of the traditional front subframe, greatly reducing the number of parts of the whole vehicle and reducing the manufacturing cost and the weight of the whole vehicle.

[0072] In the preferred solution of this embodiment, the longitudinal beam 10 is made of aluminum alloy material 6082-T6. The thickness of the longitudinal beam 10 is not less than 3 mm, and the side wall thickness of the longitudinal beam 10 is 4 mm - 7 mm; the reinforcing ribs 105 are arranged in a staggered manner, with a width of 3 mm - 6 mm; the thickness of the mounting point position of the longitudinal beam 10 is greater than the thickness of the longitudinal beam 10.

[0073] It should be noted that the aluminum alloy material 6082-T6 is defined by the standard of GB / T3190-1996, which has relatively high strength and machinability and can meet the strength requirements of the longitudinal beam 10. By adopting the aluminum alloy material 6082-T6 for the longitudinal beam 10 and the thickness design of each part of the longitudinal beam 10, the anti-load strength of the longitudinal beam 10 is improved. At the same time, the design of weight-reducing holes can be added to non-mounting holes and non-loaded parts to make the whole vehicle lightweight.

[0074] Please refer to Figures 4a to 4c , which exemplifies three arrangement methods of the reinforcing ribs 105. The reinforcing ribs 105 can be arranged on the side wall of the longitudinal beam 10 in the shapes of rectangles, rhombuses, equilateral triangles, regular hexagons, etc. In the preferred solution of this embodiment, a square arrangement is adopted.

[0075] Further, at one end of the longitudinal beam 10 connected to the torsion box 20, a first extension portion 11 is provided. At the bottom of the first extension portion 11, a concave portion 111 in the Z direction is designed for arranging the steering structure of the vehicle. Threaded holes 40 are arranged on the side of the first extension portion 11 for connecting the torsion box 20.

[0076] In an alternative solution of this embodiment, at one end of the longitudinal beam 10 connected to the torsion box 20, a first extension portion 11 is provided. The first extension portion 11 is provided with four threaded holes 40 for screwing the torsion box 20; a concave portion 111 in the Z direction is designed at the bottom of the first extension portion 11 for arranging the steering rod of the vehicle. Through the design of the first extension portion 11, the connection problem between the longitudinal beam 10 and the torsion box 20 is solved.

[0077] Further, on the outer side of one end of the torsion box 20 connected to the longitudinal beam 10, a first mounting hole 22 is provided. Threaded holes 40 are arranged on the inner wall of the first mounting hole 22 for cooperating with the longitudinal beam 10 for mounting the upper swing arm 303 of the front suspension of the vehicle.

[0078] In an alternative solution of this embodiment, a first mounting hole 22 is provided on the outer side of one end of the torsion box 20 connected to the longitudinal beam 10. Threaded holes 40 are arranged on the inner wall of the first mounting hole 22. The first mounting hole 22 is located in the Z direction of the first extension portion 11 after the longitudinal beam 10 and the torsion box 20 are connected, for cooperating with the longitudinal beam 10 to connect the upper swing arm of the front suspension of the vehicle. One end of the torsion box 20 extends outward, and a plurality of intersecting reinforcing ribs 21 can be designed on the extended plate member of the torsion box 20 to further enhance the anti-load strength of the torsion box 20 and protect the floor structure of the vehicle.

[0079] Further, the longitudinal beam 10 is provided with transverse ribs 12 and longitudinal ribs 13, the transverse ribs 12 and the longitudinal ribs 13 are cross-distributed, and the reinforcing rib 105 overlaps with the transverse ribs 12 and the longitudinal ribs 13 to jointly enhance the anti-load strength of the longitudinal beam 10.

[0080] In an alternative solution of this embodiment, transverse ribs 12 and longitudinal ribs 13 are arranged on the longitudinal beam 10, the transverse ribs 12 and the longitudinal ribs 13 are vertically cross-distributed, so that the interior of the longitudinal beam 10 is in a honeycomb shape to enhance the anti-load strength of the longitudinal beam 10. When the front bumper beam structure of the vehicle is impacted, the load can be better dispersed.

[0081] Further, the front suspension upper swing arm mounting point 101 includes a first upper swing arm mounting point 1011 and a second upper swing arm mounting point 1012. The first upper swing arm mounting point 1011 is arranged on the longitudinal rib 13 of the longitudinal beam 10, and the second upper swing arm mounting point 1012 is arranged in the first mounting hole 22 of the torsion box 20.

[0082] In an alternative solution of this embodiment, the upper swing arm mounting points 101 of the front suspension are arranged at two points, including the first upper swing arm mounting point 1011 and the second upper swing arm mounting point 1012. The first upper swing arm mounting point 1011 is arranged on the longitudinal bar 13 of the longitudinal beam 10, that is, a threaded through hole is provided on the side wall of the longitudinal bar 13. The second upper swing arm mounting point 1012 is arranged in the first mounting hole 22 of the torsion box 20. A groove 23 can also be provided on one side of the threaded hole 40 opened in the first mounting hole 22 to facilitate the operation when the second upper swing arm mounting point 1012 is connected to the front suspension upper swing arm 303 of the vehicle.

[0083] Furthermore, the longitudinal beam 10 is provided with a drive shaft through hole 14, which is arranged in the negative Z direction of the first upper swing arm mounting point 1011 and is used for the drive shaft of the vehicle to pass through to adapt to the installation of the vehicle drive shaft.

[0084] In an alternative solution of this embodiment, the longitudinal beam 10 is provided with a drive shaft through hole 14, which is arranged in the negative Z direction of the first upper swing arm mounting point 1011. It is a square hole, and its size can be adjusted according to the requirements of the drive shaft for the drive shaft of the vehicle to pass through to adapt to the installation of the vehicle drive shaft. Through the design of the drive shaft through hole 14, the layout requirement of the drive shaft of the vehicle is solved, and the adaptability of the front longitudinal beam structure 100 is improved.

[0085] Furthermore, the two ends of the bottom of the longitudinal beam 10 are provided with a second extension part 15 and a third extension part 16. The second extension part 15 and the third extension part 16 have the same extension degree. The second extension part 15 and the third extension part 16 are provided with second mounting holes 151, and the front suspension lower swing arm mounting point 102 is arranged on the second extension part 15 and the third extension part 16.

[0086] In an alternative solution of this embodiment, the two ends of the bottom of the longitudinal beam 10 are provided with a second extension part 15 and a third extension part 16. The second extension part 15 and the third extension part 16 have the same extension degree in the negative Z direction. The second extension part 15 and the third extension part 16 are provided with second mounting holes 151. The second mounting holes 151 are through holes in the second extension part 15 and the third extension part 16. The front suspension lower swing arm mounting point 102 is arranged at two points and is screwed to the second mounting holes 151 of the second extension part 15 and the third extension part 16 through bolts. Through the design of the second extension part 15 and the third extension part 16, the connection problem of the front suspension lower swing arm in the vehicle front suspension system is solved, so that the front suspension lower swing arm can be connected to the front longitudinal beam structure 100 through the second extension part 15 and the third extension part 16.

[0087] Furthermore, a fourth extension part 17 is arranged on the inner side of the longitudinal beam 10. The fourth extension part 17 is in a triangular ring shape. A third mounting hole 1041 is arranged at the triangular end of the fourth extension part 17, and a fourth mounting hole 1042 is arranged at the center point of the fourth extension part 17. The power assembly mounting point 104 is arranged on the fourth extension part 17.

[0088] In an alternative solution of this embodiment, a fourth extension portion 17 is provided inside the longitudinal beam 10, which is disposed in the positive Z direction of the second extension portion 15. The fourth extension portion 17 is in a triangular ring shape, and third mounting holes 1041 are provided at each corner of the triangular ring. A fourth mounting hole 1042 is provided at the center point of the fourth extension portion 17. The fourth mounting hole 1042 is disposed at a portion of the longitudinal beam 10 where the center of the triangular ring does not extend. Through the cooperation of the third mounting hole 1041 and the fourth mounting hole 1042, mounting points are provided for the power assembly. Through the design of the fourth extension portion 17, the connection requirements of the front longitudinal beam structure 100 during the connection of the power assembly of the vehicle are solved, and the functions of the front longitudinal beam structure 100 are further integrated.

[0089] Furthermore, a first crossbeam connection point 110 is further provided in the positive Z direction at the position of the fourth extension portion 17 of the longitudinal beam 10 for connecting the front upper crossbeam 1001 of the vehicle. The second extension portion 15 is aligned with the fourth extension portion 17 in the Z direction, and a second crossbeam connection point 120 is arranged for connecting the front lower crossbeam 1003 of the vehicle. A third crossbeam connection point 130 is arranged on the third extension portion 16 for connecting the rear suspension mounting crossbeam 1004 of the vehicle.

[0090] In an alternative solution of this embodiment, a first crossbeam connection point 110 is further provided in the positive Z direction at the position of the fourth extension portion 17 of the longitudinal beam 10. It is a plate member extending inward and is provided with a threaded hole 40 for connecting the front upper crossbeam 1001 of the vehicle. The second extension portion 15 is aligned with the fourth extension portion 17 in the Z direction. The second extension portion 15 is provided with a second crossbeam connection point 120. The second extension portion 15 can further extend inward, and a plate member is provided at the further extended portion and is provided with a threaded hole 40 for connecting the front lower crossbeam 1003 of the vehicle. A third crossbeam connection point 130 is arranged on the third extension portion 16 and is disposed on one side of the third extension portion 16 close to the torsion box 20 for connecting the rear suspension mounting crossbeam 1004 of the vehicle. Through the design of the structures of the first crossbeam connection point 110, the second crossbeam connection point 120, and the third crossbeam connection point 130, the connection requirements of the front lower crossbeam 1003, the front lower crossbeam 1003, and the rear suspension mounting crossbeam 1004 of the vehicle are solved, and the functions of the front engine compartment assembly 1000 are further simplified and integrated.

[0091] Furthermore, a fifth extension portion 18 is provided at the outer top of the longitudinal beam 10. The fifth extension portion 18 is a symmetric plate-like body, and fifth mounting holes 181 are arranged on the plate-like body. The front shock absorber mounting point 103 is disposed on the fifth extension portion 18.

[0092] In an alternative embodiment of the present invention, a fifth extension part 18 is provided at the outer top of the longitudinal beam 10. The fifth extension part 18 is a plate-shaped body symmetrically arranged longitudinally. The plate-shaped body is provided with fifth mounting holes 181. The front shock absorber mounting point 103 is arranged on the fifth extension part 18 and is connected between the plate-shaped bodies through a pin 3011. Through the design of the fifth extension part 18, the installation problem of the front shock absorber 301 in the front suspension system of the vehicle is solved.

[0093] Furthermore, a plurality of sixth mounting holes 19 are arranged at one end of the longitudinal beam 10 away from the torque box 20 for connecting the front bumper beam module of the vehicle.

[0094] In an alternative embodiment of the present invention, a plurality of sixth mounting holes 19 are arranged at one end of the longitudinal beam 10 away from the torque box 20, and can be connected to the front bumper beam module of the vehicle through bolts. The design of the sixth mounting holes 19 solves the connection problem of the front bumper beam module of the vehicle.

[0095] An embodiment of the present invention further provides a front engine compartment assembly 1000, which includes the front longitudinal beam structure 100 as described above, and further includes a front upper cross beam 1001, a front bulkhead cross beam 1002, a front lower cross beam 1003 and a rear suspension mounting cross beam 1004. The front upper cross beam 1001, the front bulkhead cross beam 1002, the front lower cross beam 1003 and the rear suspension mounting cross beam 1004 are connected between the symmetrically arranged front longitudinal beam structures 100.

[0096] In an alternative embodiment of the present invention, the front engine compartment assembly 1000 includes the front longitudinal beam structure 100, and further includes a front upper cross beam 1001, a front bulkhead cross beam 1002, a front lower cross beam 1003 and a rear suspension mounting cross beam 1004. The front upper cross beam 1001 is connected to the first cross beam connection point 110 inside the longitudinal beam 10. The front lower cross beam 1003 is connected to the second cross beam connection point 120 of the second extension part 15 inside the longitudinal beam 10. The rear suspension mounting cross beam 1004 is connected to the third cross beam connection point 130 of the third extension part 16 of the longitudinal beam 10. The front bulkhead cross beam 1002 is connected between the symmetrically arranged torque boxes 20. By arranging the front longitudinal beam structure 100 in the front engine compartment assembly 1000, the front engine compartment module of the vehicle no longer needs to be provided with a front subframe, and the functions of connecting the front suspension system, the powertrain and the steering structure can be satisfied. The designs of the front upper cross beam 1001, the front bulkhead cross beam 1002, the front lower cross beam 1003 and the rear suspension mounting cross beam 1004 make the front engine compartment assembly 1000 further highly integrated to adapt to more vehicle models.

[0097] An embodiment of the present invention further provides a vehicle (not shown) including the front engine compartment assembly 1000 as described above.

[0098] Those skilled in the art should understand that if all or part of the sub - modules involved in a front longitudinal beam structure 100 and a front engine compartment assembly 1000 integrating the function of a sub - frame are combined or replaced by means of fusion, simple change, mutual transformation, etc., such as moving the positions of each component; or the products formed by them are integrally arranged; or they are designed to be detachable; as long as the combined components can form a device / equipment / system with specific functions, replacing the corresponding components of the present invention with such a device / equipment / system also falls within the protection scope of the present invention.

[0099] In the present invention, unless otherwise clearly defined and limited, the terms such as "install", "connect", "join", "fix", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0100] In the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0101] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0102] In summary, a front longitudinal beam structure 100 and a front engine compartment assembly 1000 with an integrated subframe function provided by the present application have enhanced strength of the front longitudinal beam structure 100, which can meet the strength requirements of the integrated subframe. By designing reinforcing ribs 105 on the inner and outer sides of the longitudinal beam 10 in the Y direction, the load-bearing capacity of the front longitudinal beam structure 100 is improved. The front longitudinal beam structure 100 is provided with an upper swing arm mounting point 101 of the front suspension, a lower swing arm mounting point 102 of the front suspension, a front shock absorber mounting point 103 and a powertrain mounting point 104. Through the optimized design of the front longitudinal beam structure 100, the strength of the front longitudinal beam structure 100 can simultaneously bear the layout of the mounting points of the front suspension system, the powertrain and the steering system. The front engine compartment assembly 1000 is highly integrated and no longer relies on the front subframe to mount the front suspension system, the powertrain and the steering system, greatly reducing the number of parts of the whole vehicle and reducing the weight and manufacturing cost of the whole vehicle.

[0103] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A front longitudinal beam structure integrating the function of a subframe, which is symmetrically arranged along the X0 axis of the vehicle coordinate system, is characterized in that, Including: Longitudinal beam and torsion box; The longitudinal beam is in a square shape. One end of the longitudinal beam is connected to the torsion box, and reinforcing ribs are arranged on the inner and outer sides in the Y direction to improve the anti-load strength of the front longitudinal beam structure; Front suspension upper arm mounting points, front suspension lower arm mounting points, front shock absorber mounting points and powertrain mounting points are arranged on the front longitudinal beam structure; Among them, the front suspension upper arm mounting point is arranged at the outer top of the front longitudinal beam structure, the front suspension lower arm mounting point is arranged at the bottom of the longitudinal beam, the front shock absorber mounting point is arranged at the adjacent part in the negative X direction of the front suspension upper arm mounting point, and the powertrain mounting point is arranged on the inner side of the longitudinal beam; In the torsion box, a first mounting hole is arranged on the outer side of the end connected to the longitudinal beam. Threaded holes are arranged on the inner wall of the first mounting hole for cooperating with the longitudinal beam for mounting the front suspension upper arm of the vehicle; The longitudinal beam is provided with transverse ribs and longitudinal ribs. The transverse ribs and the longitudinal ribs are distributed crosswise, and the reinforcing ribs overlap with the transverse ribs and the longitudinal ribs to jointly enhance the anti-load strength of the longitudinal beam; The front suspension upper arm mounting point includes a first upper arm mounting point and a second upper arm mounting point. The first upper arm mounting point is arranged on the longitudinal rib of the longitudinal beam, and the second upper arm mounting point is arranged in the first mounting hole of the torsion box; 2. The front longitudinal beam structure according to claim 1, characterized in that, The longitudinal beam is made of aluminum alloy material 6082-T6. The thickness of the longitudinal beam is not less than 3 mm, and the side wall thickness of the longitudinal beam is 4 mm - 7 mm; the reinforcing ribs are arranged staggeredly with a width of 3 mm - 6 mm; the thickness of each mounting point position of the longitudinal beam is greater than the thickness of the longitudinal beam; 3. The front longitudinal beam structure according to claim 1, wherein At one end of the longitudinal beam connected to the torsion box, a first extension part is provided. A concave part in the Z direction is designed at the bottom of the first extension part for arranging the steering structure of the vehicle, and threaded holes are arranged on the side part of the first extension part for connecting the torsion box; 4. The front longitudinal beam structure according to claim 1, characterized in that, The longitudinal beam is provided with a drive shaft through hole, which is arranged in the negative Z direction of the first upper arm mounting point for the drive shaft of the vehicle to pass through and is adapted to the installation of the vehicle drive shaft; 5. The front longitudinal beam structure according to claim 1, characterized in that, At both ends of the bottom of the longitudinal beam, a second extension part and a third extension part are provided. The second extension part and the third extension part have the same extension degree. The second extension part and the third extension part are provided with second mounting holes, and the front suspension lower arm mounting point is arranged on the second extension part and the third extension part; 6. The front longitudinal beam structure according to claim 5, characterized in that, A fourth extension part is arranged on the inner side of the longitudinal beam. The fourth extension part is in a triangular ring shape. A third mounting hole is arranged at the triangular end of the fourth extension part, and a fourth mounting hole is arranged at the center point of the fourth extension part. The powertrain mounting point is arranged on the fourth extension part; 7. The front longitudinal beam structure according to claim 6, characterized in that, A first cross beam connection point is also arranged in the positive Z direction at the position of the fourth extension part of the longitudinal beam for connecting the front upper cross beam of the vehicle. The second extension part and the fourth extension part are aligned in the Z direction and are provided with a second cross beam connection point for connecting the front lower cross beam of the vehicle. The third extension part is provided with a third cross beam connection point for connecting the rear suspension mounting cross beam of the vehicle; 8. The front longitudinal beam structure according to claim 1, characterized in that, A fifth extension part is provided at the outer top of the longitudinal beam. The fifth extension part is a symmetric plate-like body, and the plate-like body is provided with fifth mounting holes. The front shock absorber mounting point is arranged on the fifth extension part.

9. The front longitudinal beam structure according to claim 1, wherein, A plurality of sixth mounting holes are arranged at one end of the longitudinal beam away from the torsion box for connecting the front anti-collision beam module of the vehicle.

10. A front engine compartment assembly, characterized in that, It includes the front longitudinal beam structure according to any one of claims 1 to 9, and further includes a front upper cross beam, a front bulkhead cross beam, a front lower cross beam and a rear suspension mounting cross beam. The front upper cross beam, the front bulkhead cross beam, the front lower cross beam and the rear suspension mounting cross beam are connected between the symmetrically arranged front longitudinal beam structures.

Images