CN121671738A - Rear longitudinal beam frame structure and vehicle - Google Patents
Rear longitudinal beam frame structure and vehicleInfo
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- CN121671738A CN121671738A CN202610186722.3A CN202610186722A CN121671738A CN 121671738 A CN121671738 A CN 121671738A CN 202610186722 A CN202610186722 A CN 202610186722A CN 121671738 A CN121671738 A CN 121671738A
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Abstract
本申请涉及车辆技术领域，公开了一种后纵梁梁架结构及车辆，后纵梁梁架结构包括后梁架总成和后悬架总成，后梁架总成为一体成型结构，后梁架总成与后悬架总成可拆卸连接；后梁架总成包括前横梁、后横梁、后纵梁、前副横梁以及副梁，前横梁与后横梁相对且沿车辆的宽度方向设置，后纵梁沿车辆的长度方向设置，前横梁、后横梁、后纵梁形成第一环形结构；前副横梁紧贴前横梁靠近后横梁的一侧设置，副梁设置于前副横梁与后横梁之间，且副梁沿车辆的长度方向设置，前副横梁、副梁与后横梁形成第二环形结构。本申请实现了车身后纵梁与后副车架的集成设计，减少了零件数量，提高了空间利用率，保障了车辆的碰撞安全和车身刚度。
This application relates to the field of vehicle technology and discloses a rear longitudinal beam frame structure and a vehicle. The rear longitudinal beam frame structure includes a rear beam frame assembly and a rear suspension assembly. The rear beam frame assembly is an integrally formed structure, and the rear beam frame assembly and the rear suspension assembly are detachably connected. The rear beam frame assembly includes a front crossbeam, a rear crossbeam, a rear longitudinal beam, a front sub-crossbeam, and a sub-beam. The front crossbeam and the rear crossbeam are opposite each other and arranged along the width direction of the vehicle, while the rear longitudinal beam is arranged along the length direction of the vehicle. The front crossbeam, the rear crossbeam, and the rear longitudinal beam form a first ring structure. The front sub-crossbeam is arranged close to the front crossbeam on the side near the rear crossbeam, and the sub-beam is arranged between the front sub-crossbeam and the rear crossbeam, and the sub-beam is arranged along the length direction of the vehicle. The front sub-crossbeam, the sub-beam, and the rear crossbeam form a second ring structure. This application realizes the integrated design of the rear longitudinal beam and the rear subframe, reduces the number of parts, improves space utilization, and ensures vehicle collision safety and body rigidity.
Description
Technical Field
The application relates to the technical field of vehicles, in particular to a rear longitudinal beam frame structure and a vehicle.
Background
For conventional new energy automobiles, the rear structure is generally composed of a vehicle body longitudinal beam assembly and a rear auxiliary frame assembly, the rear floor longitudinal beam is generally of a sheet metal structure, mounting points are provided for the rear auxiliary frame and the rear suspension, the rear auxiliary frame is generally formed by welding sheet metal, mounting and rigidity support are provided for the rear suspension, the rear auxiliary frame and the suspension are generally required to be separately packaged and then integrally mounted on the vehicle body, the manufacturing process of the two system assemblies is complex, the cost of parts is high, the number of parts is large, and the mounting is complex.
Disclosure of Invention
The application provides a rear longitudinal beam frame structure and a vehicle, which realize the integrated design of a rear longitudinal beam and a rear auxiliary frame of a vehicle body, reduce the number of parts, reduce the manufacturing cost and the quality of the whole vehicle, effectively improve the space utilization rate and simultaneously ensure the collision safety and the rigidity of the vehicle body.
In order to achieve the above purpose, the main technical scheme adopted by the application comprises the following steps:
In a first aspect, an embodiment of the present application provides a rear longitudinal beam structure, including a rear beam assembly and a rear suspension assembly, where the rear beam assembly is an integrally formed structure, and the rear beam assembly is detachably connected with the rear suspension assembly;
The rear beam frame assembly comprises a front beam, a rear longitudinal beam, a front auxiliary beam and an auxiliary beam, wherein the front beam is opposite to the rear beam and is arranged along the width direction of a vehicle, the rear longitudinal beam is arranged along the length direction of the vehicle, and the front beam, the rear beam and the rear longitudinal beam form a first annular structure;
the front auxiliary beam is clung to one side of the front beam, which is close to the rear beam, the auxiliary beam is arranged between the front auxiliary beam and the rear beam, the auxiliary beam is arranged along the length direction of the vehicle, auxiliary beam reinforcing ribs are arranged between the auxiliary beam and the rear longitudinal beam, and the front auxiliary beam, the auxiliary beam and the rear beam form a second annular structure.
Further, the rear suspension assembly comprises an H arm and a rear stabilizer bar, wherein the H arm is arranged on one side, close to a vehicle door, of the rear beam frame assembly, the H arm is detachably connected with the auxiliary beam, the rear stabilizer bar is arranged on one side, close to a vehicle tail, of the rear beam frame assembly, and the rear stabilizer bar is detachably connected with the rear cross beam.
Further, the auxiliary beam reinforcing ribs comprise first auxiliary beam reinforcing ribs and second auxiliary beam reinforcing ribs, the first auxiliary beam reinforcing ribs are close to the front auxiliary beam, and the second auxiliary beam reinforcing ribs are close to the rear beam.
Further, the H-shaped arm comprises a first connecting arm and a second connecting arm, the first connecting arm is detachably connected with one side, close to the front cross beam, of the auxiliary beam, the mounting position of the first connecting arm corresponds to the position of the first auxiliary beam reinforcing rib, the second connecting arm is detachably connected with one side, close to the rear cross beam, of the auxiliary beam, and the mounting position of the second connecting arm corresponds to the position of the second auxiliary beam reinforcing rib.
Further, one end of the rear stabilizer bar is connected with one end of the rear cross beam, the other end of the rear stabilizer bar is connected with the other end of the rear cross beam, and the rear stabilizer bar is connected with the H arm through a rocker arm.
Further, a triangular diagonal brace is arranged at the joint of the auxiliary beam and the front auxiliary beam, and the connection angle between the triangular diagonal brace and the auxiliary beam is equal to the connection angle between the triangular diagonal brace and the front auxiliary beam.
Further, the back beam assembly further comprises a middle beam arranged along the width direction of the vehicle, the middle beam is arranged between the front auxiliary beam and the back beam and is close to the front auxiliary beam, and the middle beam is detachably connected with the motor suspension of the vehicle.
Further, the rear suspension assembly further comprises a rear vibration reduction spring and a rear vibration absorber, the rear vibration reduction spring and the rear vibration absorber are arranged on one side, close to the vehicle door, of the rear beam frame assembly, the rear vibration reduction spring is detachably connected with the bottom of the rear longitudinal beam, and the rear vibration absorber is detachably connected with the top of the rear longitudinal beam.
Further, the rear longitudinal beam frame structure further comprises a reinforcing cross beam arranged along the width direction of the vehicle, the reinforcing cross beam is arranged at the top of the rear beam frame assembly, and self-punching riveting is adopted between the reinforcing cross beam and the rear beam frame assembly;
The reinforcing beam comprises a first reinforcing beam and a second reinforcing beam, the first reinforcing beam is arranged on one side, close to the front beam, of the top of the rear beam assembly, and the second reinforcing beam is arranged on one side, close to the rear beam, of the top of the rear beam assembly.
In a second aspect, an embodiment of the present application provides a vehicle including the rear side rail frame structure as described above.
The beneficial effects of the application are as follows:
The rear longitudinal beam frame structure comprises a rear beam frame assembly and a rear suspension frame assembly, wherein the rear beam frame assembly is of an integrated structure, the rear beam frame assembly is detachably connected with the rear suspension frame assembly, the rear beam frame assembly comprises a front cross beam, a rear longitudinal beam, a front auxiliary cross beam and an auxiliary cross beam, the front cross beam is opposite to the rear cross beam and is arranged along the width direction of the vehicle, the rear cross beam is arranged along the length direction of the vehicle, the front cross beam, the rear cross beam and the rear longitudinal beam form a first annular structure, the front auxiliary cross beam is tightly attached to one side of the front cross beam close to the rear cross beam, the auxiliary cross beam is arranged between the front auxiliary cross beam and the rear cross beam, the auxiliary cross beam is arranged along the length direction of the vehicle, auxiliary beam reinforcing ribs are arranged between the auxiliary cross beam and the rear cross beam, and the front auxiliary cross beam, the auxiliary cross beam and the rear cross beam form a second annular structure. The rear longitudinal beam and the rear auxiliary frame are integrated to obtain the integrally formed rear beam assembly, so that the number of parts is greatly reduced, the manufacturing cost and the weight of the whole vehicle are reduced, the space of a rear cabin is saved, the space utilization rate of the rear cabin is improved, mounting points are provided for the rear suspension assembly through the rear beam assembly, the mounting of the rear suspension assembly is simplified, the integral double-ring structure of the rear beam assembly is ensured, the collision safety and the vehicle body rigidity requirement are ensured, the safety performance of the vehicle is improved, and the rigidity and the strength of the whole rear beam assembly structure can be ensured by arranging corresponding reinforcing ribs at each position of the rear beam assembly, the connection rigidity between the rear suspension assembly and the rear beam assembly during the mounting of the rear suspension assembly is enhanced, the stability of the integral structure can be improved, and the stability of collision deformation can be increased.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present application, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic view of a rear girder frame structure according to an embodiment of the present application;
FIG. 2 is a schematic view of an installation structure of a rear beam assembly and a rear suspension assembly according to an embodiment of the present application;
FIG. 3 is a schematic view of a rear frame assembly according to an embodiment of the present application;
FIG. 4 is a schematic view of another back frame assembly according to an embodiment of the present application;
FIG. 5 is a schematic view of a rear frame assembly and a collision force transmission path according to an embodiment of the present application;
FIG. 6 is a schematic side view of a rear frame assembly according to an embodiment of the present application;
FIG. 7 is a schematic view illustrating a position of a reinforcing beam according to an embodiment of the present application;
Fig. 8 is a schematic view of a rear floor assembly according to an embodiment of the application.
[ Reference numerals description ]
1-A back beam frame assembly, 11-a front cross beam, 12-a back cross beam, 13-a back longitudinal beam, 14-a front auxiliary cross beam, 15-an auxiliary beam, 16-a first auxiliary beam reinforcing rib, 17-a second auxiliary beam reinforcing rib, 18-a middle cross beam and 19-a triangular diagonal brace;
2-rear suspension assembly, 21-H arm, 22-rear stabilizer bar, 23-rocker arm, 24-rear damping spring, 25-rear damper, 26-rear brake;
31-first reinforcing beam, 32-second reinforcing beam, 4-rear wheel casing assembly.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to fall within the scope of the application.
In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for purposes of describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and because the disclosed embodiments of the present application may be arranged in different orientations, these directional terms are merely for illustration and should not be construed as limitations, such as "upper", "lower" are not necessarily limited to orientations opposite or coincident with the direction of gravity. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly.
As shown in fig. 1 to 7, the application provides a rear longitudinal beam frame structure, which comprises a rear beam frame assembly 1 and a rear suspension frame assembly 2, wherein the rear beam frame assembly 1 is of an integrated structure, and the rear beam frame assembly 1 is detachably connected with the rear suspension frame assembly 2;
the rear beam assembly 1 comprises a front cross beam 11, a rear cross beam 12, a rear longitudinal beam 13, a front auxiliary cross beam 14 and an auxiliary beam 15, wherein the front cross beam 11 is opposite to the rear cross beam 12 and is arranged along the width direction of a vehicle, the rear longitudinal beam 13 is arranged along the length direction of the vehicle, and the front cross beam 11, the rear cross beam 12 and the rear longitudinal beam 13 form a first annular structure;
The front auxiliary beam 14 is tightly attached to one side of the front beam 11, which is close to the rear beam 12, the auxiliary beam 15 is arranged between the front auxiliary beam 14 and the rear beam 12, the auxiliary beam 15 is arranged along the length direction of the vehicle, auxiliary beam reinforcing ribs are arranged between the auxiliary beam 15 and the rear longitudinal beam 13, and the front auxiliary beam 14, the auxiliary beam 15 and the rear beam 12 form a second annular structure.
Based on the current module integration trend, the application provides an integrated and light-weight structure, the functions of the rear auxiliary frame are integrated into the rear longitudinal beam integrated beam frame structure, so that the rear longitudinal beam 13 and the rear auxiliary frame form an integrated design, the number of parts is greatly reduced, the manufacturing cost and the weight of the whole vehicle are reduced, meanwhile, due to the integration of the rear longitudinal beam 13 and the rear auxiliary frame, the space of a rear cabin is greatly saved, and the utilization rate of the space of the rear cabin is improved. The integrated design not only represents the innovation direction of the automobile chassis structure, but also reflects the comprehensive pursuit of the modern automobile industry on light weight, cost optimization and performance improvement.
The rear longitudinal beam frame structure comprises a rear beam frame assembly 1 and a rear suspension frame assembly 2, wherein the rear beam frame assembly 1 is an integrated design of a rear longitudinal beam 13 of a vehicle body and a rear auxiliary frame, is an integrated structure, is simple in manufacturing process and high in space utilization, and provides mounting points for the rear suspension frame assembly 2, so that the rear suspension frame assembly 2 is mounted. Specifically, the rear beam assembly 1 is of an integrated high-pressure cast aluminum structure, light weight is achieved while integration is achieved, and manufacturing cost and weight of the whole automobile are reduced.
Illustratively, the rear beam assembly 1 includes a front beam 11, a rear beam 12, a rear longitudinal beam 13, a front sub-beam 14 and a sub-beam 15, the front beam 11 and the rear beam 12 are disposed opposite to each other along the width direction of the vehicle, the front beam 11 is close to the vehicle head, the rear beam 12 is close to the vehicle tail, the rear longitudinal beam 13 is disposed along the length direction of the vehicle, and the rear longitudinal beams 13 are disposed on both sides of the vehicle body, so that the front beam 11, the rear longitudinal beam 13 and the rear beam 12 may form a large integral ring structure, i.e., the first ring structure. The front sub-cross member 14 is closely attached to the front cross member 11, the sub-cross member 15 is provided between the front cross member 11 and the rear cross member 12, and is provided along the longitudinal direction of the vehicle, and the sub-cross member 15 is provided between the rear side members 13 on both sides of the vehicle body, whereby the front sub-cross member 14, the sub-cross member 15, and the rear cross member 12 can form a small integral ring structure, i.e., the above-mentioned second ring structure. Through setting up back beam frame assembly 1 as an organic whole dicyclo structure, be favorable to improving the collision performance at vehicle rear portion, ensure the security performance of vehicle. In addition, the auxiliary beam reinforcing ribs are arranged between the rear longitudinal beam 13 and the auxiliary beam 15, so that the rigidity and the strength of the rear beam frame assembly 1 can be further improved. As shown in fig. 5, two black dashed boxes are included in fig. 5, wherein a large dashed box indicates a large integral ring structure formed by the front cross member 11, the rear side member 13, and the rear cross member 12, and a small dashed box indicates a small integral ring structure formed by the front sub cross member 14, the sub cross member 15, and the rear cross member 12. In addition, fig. 5 also shows a transmission path of collision force, and when a collision is received, the collision force can be transmitted along the path shown by the black thick arrow, and the rear longitudinal beam 13 and the auxiliary beam 15 in the rear beam assembly 1 can all transmit stress, so that the collision performance of the vehicle is improved.
By way of example, fig. 6 is a schematic side view of the rear frame assembly 1, and after the rear subframe of the vehicle is integrated, the height of the rear side member 13 may be reduced, and its cross section may be increased, which is advantageous for improving the collision performance. And be provided with the strengthening rib in the back frame assembly 1, the setting direction of strengthening rib can be X to or Z to promote the rigidity of connection of strengthening rib, in addition, in order to further promote local intensity, can adopt the crisscross rib arrangement mode of X shape. The X-direction indicates the longitudinal direction of the vehicle, the Y-direction indicates the width direction of the vehicle, and the Z-direction indicates the height direction of the vehicle.
In an exemplary embodiment, the ribs in the small integral ring structure may be arranged in a stable triangle with the direction being Z-direction to ensure that the inner side may be Z-direction ejected.
Further, the rear suspension assembly 2 comprises an H-arm 21 and a rear stabilizer bar 22, wherein the H-arm 21 is arranged on one side of the rear beam assembly 1 close to a vehicle door, the H-arm 21 is detachably connected with the auxiliary beam 15, the rear stabilizer bar 22 is arranged on one side of the rear beam assembly 1 close to a vehicle tail, and the rear stabilizer bar 22 is detachably connected with the rear cross beam 12.
Illustratively, the rear suspension assembly 2 includes an H-arm 21 and a rear stabilizer bar 22, the H-arm 21 is disposed on both sides of the vehicle body, and the sub-beam 15 in the rear beam frame assembly 1 provides a mounting point for the H-arm 21, thereby enabling detachable connection between the H-arm 21 and the sub-beam 15, and enabling mounting and dismounting of the H-arm 21. The rear stabilizer bar 22 is arranged at a position close to the tail of the vehicle, and the rear cross beam 12 in the rear beam assembly 1 provides a mounting point for the rear stabilizer bar 22, so that detachable connection between the rear stabilizer bar 22 and the rear cross beam 12 can be realized, and mounting and dismounting of the rear stabilizer bar 22 are realized.
In an exemplary embodiment, the secondary beam 15 may have a cross-sectional dimension of 100 x 90 mm to ensure sufficient rigidity of the mounting location of the H-arm 21.
Further, the secondary beam stiffener includes a first secondary beam stiffener 16 and a second secondary beam stiffener 17, the first secondary beam stiffener 16 being adjacent to the front secondary beam 14, the second secondary beam stiffener 17 being adjacent to the rear beam 12.
Further, the H-arm 21 includes a first connecting arm detachably connected to a side of the sub-beam 15 near the front cross beam 11, and having an installation position corresponding to a position of the first sub-beam stiffener 16, and a second connecting arm detachably connected to a side of the sub-beam 15 near the rear cross beam 12, and having an installation position corresponding to a position of the second sub-beam stiffener 17.
The secondary beam stiffener may include a first secondary beam stiffener 16 and a second secondary beam stiffener 17, as shown in fig. 3, where the first secondary beam stiffener 16 may be a secondary beam front stiffener, close to the front cross member 11 and the front secondary cross member 14, corresponding to the position of the first connecting arm of the H-arm 21, capable of enhancing the Y-directional connection stiffness between the first connecting arm of the H-arm 21 and the rear beam assembly 1, and the second secondary beam stiffener 17 may be a secondary beam rear stiffener, close to the rear cross member 12, corresponding to the position of the second connecting arm of the H-arm 21, capable of enhancing the Y-directional connection stiffness between the second connecting arm of the H-arm 21 and the rear beam assembly 1. The auxiliary beam 15 provides two mounting positions for the H arm 21, so that the first mounting arm and the second mounting arm of the H arm 21 can be respectively mounted at the two mounting positions, and the connection rigidity of the H arm 21 is ensured through the auxiliary beam reinforcing ribs, so that the whole vehicle body structure is more stable and reliable.
As shown in fig. 2 and 3, the number of the second sub-beam reinforcing ribs 17 may be two, and the second connection arm of the H-arm 21 may be installed on the sub-beam 15 in a region between the two second sub-beam reinforcing ribs 17 to secure sufficient connection reliability.
Further, one end of the rear stabilizer bar 22 is connected to one end of the rear cross member 12, the other end of the rear stabilizer bar 22 is connected to the other end of the rear cross member 12, and the rear stabilizer bar 22 is connected to the H-arm 21 through a rocker arm 23.
Illustratively, the rear stabilizer bar 22 is disposed along the width direction of the vehicle, and two ends of the rear cross member 12 in the rear beam assembly 1 provide mounting positions for two ends of the rear stabilizer bar 22, respectively, one end of the rear stabilizer bar 22 is connected to one end of the rear cross member 12, the other end of the rear stabilizer bar 22 is connected to the other end of the rear cross member 12, and two end portions of the rear stabilizer bar 22 are connected to the H-arm 21 through the rocker 23. As shown in fig. 2, 3 and 4, the rear cross member 12 is located at the portion between the sub-beam 15 and the rear side member 13, and the points shown on the front and rear sides of the rear cross member 12 are the mounting positions of the rear stabilizer bar 22.
When the vehicle turns, the vehicle body is tilted by centrifugal force, the outer suspension is compressed, and the inner suspension is stretched. At this time, the rear stabilizer bar 22 is twisted due to the opposite forces applied to the two ends, and the torsional rigidity of the rear stabilizer bar 22 generates a counter moment to resist the compression of the outer side suspension and the tension of the inner side suspension, and the rear stabilizer bar 22 allows the left and right wheels to share more lateral force by resisting the unequal-amplitude motions of the two side suspensions, so that the inclination of the vehicle body is reduced, and the over-bending stability is improved.
According to the embodiment of the application, the rear cross beam 12 in the rear beam frame assembly 1 provides an installation position for the rear stabilizer bar 22 in the rear suspension frame assembly 2, so that the installation of the rear stabilizer bar 22 is realized, and the stability of the vehicle in the running process is ensured.
Further, a triangular diagonal brace 19 is arranged at the connection position of the auxiliary beam 15 and the front auxiliary beam 14, and the connection angle between the triangular diagonal brace 19 and the auxiliary beam 15 is equal to the connection angle between the triangular diagonal brace 19 and the front auxiliary beam 14.
As shown in fig. 2 to 5, the auxiliary beam 15 is disposed along the longitudinal direction of the vehicle, the front auxiliary cross member 14 is disposed along the width direction of the vehicle, and the diagonal brace is disposed at the junction of the auxiliary beam 15 and the front auxiliary cross member 14, so that the stability of the structure can be improved.
In an exemplary embodiment, the connection between the auxiliary beam 15 and the front auxiliary beam 14 is provided with the triangular diagonal strut 19, the connection angle between the triangular diagonal strut 19 and the auxiliary beam 15 is equal to the connection angle between the triangular diagonal strut 19 and the front auxiliary beam 14, the connection angle is 45 degrees, and the angles between the triangular diagonal strut 19 and the auxiliary beam 15 and the front auxiliary beam 14 are equal, so that not only can the structural stability be improved, but also the stability of collision deformation can be improved, and the safety performance of the vehicle is improved.
According to the embodiment of the application, the triangular diagonal braces 19 are arranged in the rear beam assembly 1, so that the structural stability of the rear beam assembly 1 can be ensured, and the rigidity and the collision performance of the vehicle body can be improved.
Further, the rear beam assembly 1 further includes a middle beam 18 disposed along a width direction of the vehicle, the middle beam 18 is disposed between the front sub-beam 14 and the rear beam 12 and is close to the front sub-beam 14, and the middle beam 18 is detachably connected with a motor mount of the vehicle.
Illustratively, the rear beam assembly 1 further includes a middle cross member 18, as shown in fig. 2-5, where the middle cross member 18 is disposed between the front sub-cross member 14 and the rear cross member 12 and along the width direction of the vehicle, and where the middle cross member 18 can provide a mounting location for the motor suspension.
Illustratively, three motor suspension mounting points may be disposed on the middle cross member 18, as shown in fig. 4, where the motor suspension mounting points are located in a middle position of the middle cross member 18, so as to ensure mounting stability of the motor suspension and ensure stress balance. The motor suspension mounting point includes first motor suspension mounting point, second motor suspension mounting point and third motor suspension mounting point, and wherein, the distance of first motor suspension mounting point to auxiliary girder 15 equals the distance of second motor suspension mounting point to auxiliary girder 15, and the distance between first motor suspension mounting point to the third motor suspension mounting point is greater than first preset distance, and is less than the second preset distance, avoids too near or too far apart from between the mounting point. It should be noted that the distances from the respective motor suspension mounting points to the secondary beam 15 described above use the same secondary beam 15 as a reference. In an exemplary embodiment, the motor mount may be rigidly connected to the center cross member 18 in the rear frame assembly 1 by bolts.
Further, the rear suspension assembly 2 further comprises a rear vibration damper spring 24 and a rear vibration damper 25, the rear vibration damper spring 24 and the rear vibration damper 25 are both arranged on one side of the rear beam frame assembly 1 close to the vehicle door, the rear vibration damper spring 24 is detachably connected with the bottom of the rear longitudinal beam 13, and the rear vibration damper 25 is detachably connected with the top of the rear longitudinal beam 13.
The rear suspension assembly 2 further includes a rear damper spring 24 and a rear damper 25, the rear damper spring 24 being a main load-bearing and energy-storing element in the rear suspension assembly 2 and being capable of supporting a static weight of a rear half of a vehicle body, the rear damper spring 24 being compressed or stretched when a wheel encounters a bump (e.g., a pothole or a deceleration strip), and absorbing and converting severe impact energy from a road surface into elastic potential energy of the rear damper spring 24, thereby avoiding direct and harsher transmission of the impact force to the vehicle body and passengers, and providing a primary cushion, the rear damper 25 being a damping energy-consuming element capable of converting the elastic potential energy stored in the rear damper spring 24 into heat energy to be dissipated, suppressing vibration, and improving vehicle handling stability and riding comfort. As shown in fig. 1, 2 and 4, the rear side member 13 in the rear frame assembly 1 provides a mounting position for the rear damper spring 24, and the mounting position of the rear damper spring 24 is located at the lower half of the rear side member 13, so that the rear damper spring 24 is detachably connected with the bottom of the rear side member 13, and in fig. 4, the mounting position of the rear damper spring 24 is located at a thread turn on the rear side member 13. At the same time, the rear side rail 13 also provides a mounting location for the rear shock absorber 25, unlike the rear shock absorber springs 24, the mounting location of the rear shock absorber 25 is located above the rear side rail 13 so that the rear shock absorber 25 is detachably connected to the top of the rear side rail 13. And, the rear damper springs 24 are closer to the front cross member 11 than the rear dampers 25.
The rear suspension assembly 2 further includes a rear brake 26, and the rear brake 26 is connected to the H-arm 21, so that the vehicle body can be connected to the wheels, and deceleration and parking control of the vehicle can be achieved.
The embodiment of the application provides mounting positions for the rear vibration damper springs 24 and the rear vibration dampers 25 through the rear longitudinal beams 13, so that the rear vibration damper springs 24 and the rear vibration dampers 25 are mounted.
Further, the rear longitudinal beam frame structure further comprises a reinforcing beam arranged along the width direction of the vehicle, the reinforcing beam is arranged at the top of the rear beam frame assembly 1, and self-piercing riveting is adopted between the reinforcing beam and the rear beam frame assembly 1;
The reinforcing cross beams comprise a first reinforcing cross beam 31 and a second reinforcing cross beam 32, the first reinforcing cross beam 31 is arranged on one side, close to the front cross beam 11, of the top of the rear beam assembly 1, and the second reinforcing cross beam 32 is arranged on one side, close to the rear cross beam 12, of the top of the rear beam assembly 1.
The rear girder frame structure may further include a reinforcing cross beam, as shown in fig. 7, disposed along a width direction of the vehicle, and may include a first reinforcing cross beam 31 and a second reinforcing cross beam 32, that is, a front reinforcing cross beam and a rear reinforcing cross beam, both located at a top of the rear girder frame assembly 1, and disposed in tandem, so as to effectively improve torsional rigidity and bending rigidity of the whole vehicle.
Illustratively, the two reinforcement beams are connected to the back frame assembly 1 by SPR (Self-PIERCING RIVETING), i.e. by Self-piercing riveting, which is a cold connection process for connecting two or more layers of metal plates, and the whole process does not need pre-drilling or conventional solid rivets. The SPR connection is purely mechanical connection, is independent of hot melting of materials, can be used for connecting different metal materials efficiently, reliably and with high quality, and in addition, the mechanical interlocking structure formed by the SPR connection is high in strength, has excellent shearing resistance and peeling resistance, and dynamic fatigue strength is generally superior to spot welding, so that the light weight of the whole vehicle is realized.
According to the embodiment of the application, the reinforcing cross beam is additionally arranged above the back beam assembly 1, so that the torsion rigidity and the bending rigidity of the whole vehicle can be effectively improved.
The present application mainly integrates the rear subframe and the rear longitudinal beam 13 of the vehicle body to obtain an integrated rear beam assembly 1 structure, and provides mounting points for the rear suspension assembly 2, thereby reducing the number of parts and realizing the integration and light weight of the vehicle.
The rear longitudinal beam 13 and the rear auxiliary frame are integrated to obtain the integrally formed rear beam frame assembly 1, so that the number of parts is greatly reduced, the manufacturing cost and the weight of the whole vehicle are reduced, the space of a rear cabin is saved, the space utilization rate of the rear cabin is improved, the rear beam frame assembly 1 provides mounting points for the rear suspension frame assembly 2, the mounting of the rear suspension frame assembly 2 is simplified, the integral double-ring structure of the rear beam frame assembly 1 guarantees the collision safety and the vehicle body rigidity requirement, the safety performance of the vehicle is improved, and the corresponding reinforcing ribs are arranged at each position of the rear beam frame assembly 1, so that the rigidity and the strength of the whole rear beam frame assembly 1 can be guaranteed, the connection rigidity between the rear suspension frame assembly 2 and the rear beam frame assembly 1 can be enhanced, and the stability of the whole structure and the collision deformation can be improved.
The application also provides a rear floor assembly of the vehicle body, as shown in fig. 8, the rear floor assembly can comprise a rear beam frame assembly 1, a rear suspension frame assembly 2, a rear wheel cover assembly 4, a rear longitudinal beam rear assembly, a reinforcing cross beam and the like, which are all important components of the vehicle body.
The application also provides a vehicle, which comprises the rear longitudinal beam frame structure, wherein the rear longitudinal beam 13 and the rear auxiliary frame of the vehicle body are integrated into the rear beam frame assembly 1, the rear beam frame assembly 1 is of an integrated high-pressure cast aluminum structure, an installation position is provided for the rear suspension assembly 2, the complex installation problem that the rear auxiliary frame and the rear suspension frame in the prior art are required to be separately assembled and then integrally installed to the vehicle body is solved, the integrated design of the rear longitudinal beam 13 and the rear auxiliary frame of the vehicle body can combine the number of parts into 1 from 65, the weight of a rear floor and the auxiliary frame is reduced by 25%, the number of parts is greatly reduced, the manufacturing cost and the weight of the whole vehicle are reduced, meanwhile, the space of a rear cabin is saved, the utilization rate of the space of the rear cabin is improved by 10%, and the comprehensive pursuit for light weight, cost optimization and performance improvement is met.
The beneficial effects of the application are as follows:
The rear longitudinal beam frame structure comprises a rear beam frame assembly and a rear suspension frame assembly, wherein the rear beam frame assembly is of an integrated structure, the rear beam frame assembly is detachably connected with the rear suspension frame assembly, the rear beam frame assembly comprises a front cross beam, a rear longitudinal beam, a front auxiliary cross beam and an auxiliary cross beam, the front cross beam is opposite to the rear cross beam and is arranged along the width direction of the vehicle, the rear cross beam is arranged along the length direction of the vehicle, the front cross beam, the rear cross beam and the rear longitudinal beam form a first annular structure, the front auxiliary cross beam is tightly attached to one side of the front cross beam close to the rear cross beam, the auxiliary cross beam is arranged between the front auxiliary cross beam and the rear cross beam, the auxiliary cross beam is arranged along the length direction of the vehicle, auxiliary beam reinforcing ribs are arranged between the auxiliary cross beam and the rear cross beam, and the front auxiliary cross beam, the auxiliary cross beam and the rear cross beam form a second annular structure. The rear longitudinal beam and the rear auxiliary frame are integrated to obtain the integrally formed rear beam assembly, so that the number of parts is greatly reduced, the manufacturing cost and the weight of the whole vehicle are reduced, the space of a rear cabin is saved, the space utilization rate of the rear cabin is improved, mounting points are provided for the rear suspension assembly through the rear beam assembly, the mounting of the rear suspension assembly is simplified, the integral double-ring structure of the rear beam assembly is ensured, the collision safety and the vehicle body rigidity requirement are ensured, the safety performance of the vehicle is improved, and the rigidity and the strength of the whole rear beam assembly structure can be ensured by arranging corresponding reinforcing ribs at each position of the rear beam assembly, the connection rigidity between the rear suspension assembly and the rear beam assembly during the mounting of the rear suspension assembly is enhanced, the stability of the integral structure can be improved, and the stability of collision deformation can be increased.
The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and variations of the present application will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the application are to be included in the scope of the claims of the present application.
Although embodiments of the present application have been described in connection with the accompanying drawings, various modifications and variations may be made by those skilled in the art without departing from the spirit and scope of the application, and such modifications and variations are within the scope of the application as defined by the appended claims.
Claims (10)
1. The rear longitudinal beam frame structure is characterized by comprising a rear beam frame assembly (1) and a rear suspension frame assembly (2), wherein the rear beam frame assembly (1) is of an integrated structure, and the rear beam frame assembly (1) is detachably connected with the rear suspension frame assembly (2);
The rear beam assembly (1) comprises a front cross beam (11), a rear cross beam (12), a rear longitudinal beam (13), a front auxiliary cross beam (14) and an auxiliary beam (15), wherein the front cross beam (11) is opposite to the rear cross beam (12) and is arranged along the width direction of a vehicle, the rear longitudinal beam (13) is arranged along the length direction of the vehicle, and the front cross beam (11), the rear cross beam (12) and the rear longitudinal beam (13) form a first annular structure;
The front auxiliary beam (14) is tightly attached to one side, close to the rear beam (12), of the front beam (11), the auxiliary beam (15) is arranged between the front auxiliary beam (14) and the rear beam (12), the auxiliary beam (15) is arranged along the length direction of the vehicle, auxiliary beam reinforcing ribs are arranged between the auxiliary beam (15) and the rear longitudinal beam (13), and the front auxiliary beam (14), the auxiliary beam (15) and the rear beam (12) form a second annular structure.
2. The rear longitudinal beam frame structure according to claim 1, wherein the rear suspension assembly (2) comprises an H-arm (21) and a rear stabilizer bar (22), the H-arm (21) is arranged on one side of the rear beam frame assembly (1) close to a vehicle door, the H-arm (21) is detachably connected with the auxiliary beam (15), the rear stabilizer bar (22) is arranged on one side of the rear beam frame assembly (1) close to a vehicle tail, and the rear stabilizer bar (22) is detachably connected with the rear cross beam (12).
3. The rear side rail beam frame structure according to claim 2, characterized in that the secondary beam reinforcement comprises a first secondary beam reinforcement (16) and a second secondary beam reinforcement (17), the first secondary beam reinforcement (16) being adjacent to the front secondary cross member (14), the second secondary beam reinforcement (17) being adjacent to the rear cross member (12).
4. A rear side rail beam frame structure according to claim 3, characterized in that the H-arm (21) comprises a first connecting arm detachably connected to a side of the sub-beam (15) near the front cross member (11) and having a mounting position corresponding to the position of the first sub-beam stiffener (16), and a second connecting arm detachably connected to a side of the sub-beam (15) near the rear cross member (12) and having a mounting position corresponding to the position of the second sub-beam stiffener (17).
5. The rear side member frame structure according to claim 2, wherein one end of the rear stabilizer bar (22) is connected to one end of the rear cross member (12), the other end of the rear stabilizer bar (22) is connected to the other end of the rear cross member (12), and the rear stabilizer bar (22) is connected to the H-arm (21) through a rocker arm (23).
6. The rear longitudinal beam frame structure according to claim 1, characterized in that a triangular diagonal brace (19) is provided at the connection of the auxiliary beam (15) and the front auxiliary cross beam (14), and the connection angle between the triangular diagonal brace (19) and the auxiliary beam (15) is equal to the connection angle between the triangular diagonal brace (19) and the front auxiliary cross beam (14).
7. The rear side rail frame structure according to claim 6, wherein the rear rail frame assembly (1) further includes a center cross member (18) provided in a width direction of the vehicle, the center cross member (18) being provided between the front sub cross member (14) and the rear cross member (12) and being adjacent to the front sub cross member (14), the center cross member (18) being detachably connected to a motor mount of the vehicle.
8. The rear side rail beam structure according to claim 1, characterized in that the rear suspension assembly (2) further comprises a rear damper spring (24) and a rear damper (25), the rear damper spring (24) and the rear damper (25) are both disposed on a side of the rear beam assembly (1) close to a vehicle door, and the rear damper spring (24) is detachably connected with a bottom portion of the rear side rail, and the rear damper (25) is detachably connected with a top portion of the rear side rail.
9. The rear side rail beam structure according to claim 1, further comprising a reinforcement cross member provided along a width direction of the vehicle, the reinforcement cross member being provided on top of the rear beam assembly (1), the reinforcement cross member being self-piercing riveted with the rear beam assembly (1);
The reinforcing beam comprises a first reinforcing beam (31) and a second reinforcing beam (32), the first reinforcing beam (31) is arranged on one side, close to the front beam (11), of the top of the rear beam assembly (1), and the second reinforcing beam (32) is arranged on one side, close to the rear beam (12), of the top of the rear beam assembly (1).
10. A vehicle comprising a rear rail beam structure as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202610186722.3A CN121671738A (en) | 2026-02-09 | 2026-02-09 | Rear longitudinal beam frame structure and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202610186722.3A CN121671738A (en) | 2026-02-09 | 2026-02-09 | Rear longitudinal beam frame structure and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN121671738A true CN121671738A (en) | 2026-03-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202610186722.3A Pending CN121671738A (en) | 2026-02-09 | 2026-02-09 | Rear longitudinal beam frame structure and vehicle |
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| CN (1) | CN121671738A (en) |
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