Rear subframe mounting structure and vehicle

Abstract

The utility model discloses a rear subframe mounting structure and a vehicle, and relates to the technical field of vehicles, the rear subframe mounting structure comprises a rear longitudinal beam, a reinforcing connecting plate and a mounting sleeve, the reinforcing connecting plate is fixed in the rear longitudinal beam and divides an inner cavity of the rear longitudinal beam into a first cavity and a second cavity which are arranged in the vertical direction; the mounting sleeve is used for mounting a rear auxiliary frame of the vehicle, and the mounting sleeve penetrates through and is connected to the rear longitudinal beam and the reinforcing connecting plate; according to the technical scheme, the connection rigidity of the installation position of the rear auxiliary frame can be improved, and the driving safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a rear subframe mounting structure and a vehicle. Background Art

[0002] At present, consumers have higher and higher requirements for automobile quality. As the most basic performance attribute of automobiles, the durability of the body structure directly affects driving safety and customer experience. At the same time, consumers have an increasing demand for driving travel. Since outdoor scenes involve various unique extreme working conditions, the car will experience a variety of road surfaces and working scenes during driving. Loads in all directions are transmitted to the body through the connection points between the chassis and the body. The rear subframe rear mounting point is one of the key components for connecting the body and the chassis, and it bears a large working load. If the connection stiffness is poor, the rear subframe mounting point is prone to cracking due to fatigue in sheet metal, welding points, welds, etc., thus affecting driving safety and customer experience. Utility Model Content

[0003] The main purpose of the utility model is to provide a rear subframe mounting structure and a vehicle, aiming to improve the connection rigidity of the rear subframe mounting position and improve driving safety.

[0004] In order to achieve the above-mentioned purpose, the rear subframe mounting structure proposed by the utility model includes:

[0005] rear longitudinal beam;

[0006] A reinforcing connecting plate is fixed in the rear longitudinal beam and divides the inner cavity of the rear longitudinal beam into a first cavity and a second cavity arranged in an upward and downward direction; and

[0007] The mounting sleeve is used for mounting the rear sub-frame of the vehicle, and the mounting sleeve is passed through and connected to the rear longitudinal beam and the reinforcing connecting plate.

[0008] In one embodiment, the reinforcing connecting plate includes an upper connecting plate and a lower connecting plate arranged at intervals along the axial direction of the mounting sleeve, the lower connecting plate is fixed to the lower side of the rear longitudinal beam, and the upper connecting plate is used to separate the inner cavity of the rear longitudinal beam into a first cavity and a second cavity.

[0009] In one embodiment, the periphery of the mounting sleeve is fixed to the upper connecting plate by welding; and / or the periphery of the mounting sleeve is fixed to the lower connecting plate by welding.

[0010] In one embodiment, the upper connecting plate includes a first side and a second side that are oppositely arranged, the first side is fixed to a side of the rear longitudinal beam close to the rear cross beam of the vehicle, and the second side is fixed to a side of the rear longitudinal beam away from the rear cross beam of the vehicle.

[0011] In one embodiment, the first side has a first flange, and the first flange is connected to a side of the rear longitudinal beam close to the rear cross beam of the vehicle; and / or,

[0012] The second side has a second flange, and the second flange is connected to a side of the rear longitudinal beam away from the rear cross beam of the vehicle.

[0013] In one embodiment, the upper connecting plate further comprises two third sides arranged opposite to each other, and the two third sides are both connected to the ends of the first side and the second side;

[0014] The two third sides are both provided with third flanges extending toward the lower side close to the rear longitudinal beam, and the two third flanges respectively press the two first side edges of the lower connecting plate against the rear longitudinal beam.

[0015] In one embodiment, a fourth flange is formed on one side of the third flange facing the lower side of the rear longitudinal beam, the fourth flange abuts against the first side and is fixed to the rear longitudinal beam; and / or,

[0016] Along the extension direction of the third flange, a fifth flange is further provided on the side of the third flange, and the fifth flange is fixedly connected to the lower side of the rear longitudinal beam; and / or,

[0017] The lower connecting plate includes a second side edge arranged between the two first side edges, the second side edge has a sixth flange extending toward the upper connecting plate, and the sixth flange edge is fixedly connected to the upper connecting plate.

[0018] In one embodiment, a bushing mounting plate is provided on the lower side of the rear longitudinal beam, and the bushing mounting plate is covered on the outside of the rear longitudinal beam to enclose the rear longitudinal beam to form a third chamber, and the bushing mounting plate is connected to the end of the mounting sleeve.

[0019] In one embodiment, a bushing mounting reinforcement plate is provided on the side of the bushing mounting plate facing away from the rear longitudinal beam, one side of the bushing mounting reinforcement plate is at least connected to the bushing mounting plate, and the other side is used to connect to the rear cross beam of the vehicle; and / or,

[0020] The distance from one end of the bushing mounting plate away from the rear longitudinal beam to the rear longitudinal beam is greater than or equal to 30 mm; and less than or equal to 200 mm.

[0021] The utility model also provides a vehicle, comprising the rear subframe mounting structure as described above.

[0022] The technical solution of the utility model is to set a reinforcing connecting plate in the rear longitudinal beam, fix the reinforcing connecting plate in the rear longitudinal beam, and separate the inner cavity of the rear longitudinal beam into a first cavity and a second cavity arranged in upper and lower directions, so that the two cavities rely on each other and support each other, which helps to improve the structural strength of the rear longitudinal beam. At the same time, the first cavity and the second cavity jointly form a large cavity. This interconnected and mutually enclosed structure is stable and easy to transmit force, which greatly improves the rigidity and strength of the rear longitudinal beam at the rear subframe installation point, can withstand loads in any direction, and helps to bear and transmit the road load transmitted by the subframe.

[0023] The rear subframe mounting structure also includes a mounting sleeve, which is used for mounting the rear subframe of the vehicle, and the mounting sleeve is passed through and connected to the rear longitudinal beam and the reinforced connecting plate, thereby ensuring both the installation stability of the mounting sleeve and the smooth transmission of load by the mounting sleeve, and increasing the connection between the mounting sleeve and the reinforced connecting plate, and increasing the connection points of the mounting sleeve at the rear subframe mounting point, which helps to disperse the load and reduce stress concentration, thereby reducing the possibility of local deformation of the rear longitudinal beam, and improving the connection stiffness at the rear subframe mounting point, thereby improving driving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0025] Figure 1 A structural schematic diagram of an embodiment of a rear subframe mounting structure provided by the utility model;

[0026] Figure 2 for Figure 1 A cross-sectional view of the mid-rear subframe mounting structure;

[0027] Figure 3 for Figure 1 A partial structural cross-sectional view of the mid-rear subframe mounting structure;

[0028] Figure 4 for Figure 1 A schematic diagram of the structure of the middle reinforced connecting plate at an angle;

[0029] Figure 5 for Figure 1 Another structural diagram of the middle reinforcement connecting plate from another angle;

[0030] Figure 6 for Figure 1 Another structural schematic diagram of the middle reinforced connecting plate from another angle.

[0031] Description of Figure Numbers:

[0032] 100. Rear subframe mounting structure; 1. Rear longitudinal beam; 11. Rear longitudinal beam upper plate; 12. Rear longitudinal beam lower plate; 13. First chamber; 14. Second chamber; 15. Rear longitudinal beam side plate; 2. Reinforced connecting plate; 21. Upper connecting plate; 211. First flange; 212. Second flange; 213. Third flange; 214. Fourth flange; 215. Fifth flange; 22. Lower connecting plate; 221. First side; 222. Second side; 223. Sixth flange; 3. Mounting sleeve; 4. Bushing mounting plate; 41. Third chamber; 5. Bushing mounting reinforcement plate; 6. Rear cross beam.

[0033] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0036] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0037] The utility model provides a rear subframe mounting structure 100 for a vehicle.

[0038] See also Figure 1 and Figure 2 In one embodiment of the present utility model, the rear subframe mounting structure 100 comprises:

[0039] Rear longitudinal beam 1;

[0040] A reinforcing connecting plate 2 is fixed in the rear longitudinal beam 1 and divides the inner cavity of the rear longitudinal beam 1 into a first cavity 13 and a second cavity 14 arranged in the upper and lower directions; and

[0041] The mounting sleeve 3 is used for mounting the rear subframe of the vehicle, and the mounting sleeve 3 is passed through and connected to the rear longitudinal beam 1 and the reinforcing connecting plate 2 .

[0042] Specifically, in order to reduce the energy consumption of the automobile, the rear longitudinal beam 1 generally adopts a hollow beam, and the reinforcing connecting plate 2 is arranged in the rear longitudinal beam 1, and the rear longitudinal beam 1 is divided into a first chamber 13 and a second chamber 14, that is, the reinforcing connecting plate 2 divides the inner cavity of the rear longitudinal beam 1 at the rear sub-frame installation into two small chambers, and the two chambers rely on and support each other, which helps to improve the structural strength of the rear longitudinal beam 1. At the same time, the first chamber 13 and the second chamber 14 jointly form a large chamber. This interconnected and mutually closed structure is stable and easy to transmit force, which greatly improves the rigidity and strength of the rear longitudinal beam 1 at the rear sub-frame installation, can withstand loads in any direction, and helps to bear and transmit the road load transmitted by the rear sub-frame.

[0043] The mounting sleeve 3 is fixed in the rear longitudinal beam 1 and is often located at the connection between the rear longitudinal beam 1 and the rear cross beam 6. The rear subframe is mounted on the vehicle body by mounting the mounting sleeve 3. Therefore, the mounting sleeve 3 must be stably fixed and can stably transmit the road load transmitted by the subframe. Therefore, the mounting sleeve 3 is passed through and connected to the rear longitudinal beam 1 and the reinforcing connecting plate 2, so that the mounting sleeve 3 can be stably connected to the rear longitudinal beam 1 and the reinforcing connecting plate 2 respectively, thereby ensuring both the installation stability of the mounting sleeve 3 and the smooth transmission of the load by the mounting sleeve 3.

[0044] Since the rear sub-frame is installed at one end of the installation sleeve 3 facing the lower side of the rear longitudinal beam 1, the lever arm gradually increases in the direction close to the upper side of the rear longitudinal beam 1, and the load borne by the rear sub-frame installation structure 100 also gradually increases. In the prior art, generally, the structure of reinforcing the connecting plate 2 is not provided in the rear longitudinal beam 1. At this time, the installation sleeve 3 is only fixed to the rear longitudinal beam 1, and at this time, the load difference between the upper side and the lower side of the rear longitudinal beam 1 is large, and the upper side of the rear longitudinal beam 1 needs to bear a large load. When encountering extreme working conditions, the large road load may cause the upper side of the rear longitudinal beam 1 to partially deform, or the installation sleeve 3 may become loose, making it difficult to ensure driving safety and affecting the user's experience. In the present solution, compared with the prior art, the reinforced connecting plate 2 is located inside the rear longitudinal beam 1. Therefore, under the condition of equal road load, the load borne by the reinforced connecting plate 2 must be smaller than the load borne by the upper side of the rear longitudinal beam 1, so that the reinforced connecting plate 2 disperses the load transmitted to the upper side of the rear longitudinal beam 1, and the upper side of the rear longitudinal beam 1, the reinforced connecting plate 2 and the lower side of the rear longitudinal beam 1 are arranged in layers, and the connection point of the mounting sleeve 3 at the rear subframe mounting position is increased, which helps to disperse the load and reduce stress concentration, thereby reducing the possibility of local deformation of the rear longitudinal beam 1, improving the connection stiffness at the rear subframe mounting position, and thus improving driving safety.

[0045] The first chamber 13 and the second chamber 14 are arranged in the upper and lower directions, that is, arranged in the axial direction of the mounting sleeve 3, that is, arranged in the height direction of the vehicle. The mounting sleeve 3 is usually fixed to the rear longitudinal beam 1 and the reinforcing connecting plate 2 by welding, and in order to improve the connection stability, it is generally fixed in the form of lap joint of girth weld. Of course, in other embodiments, it can also be fixed in the form of lap joint of strip weld or spot welding.

[0046] In order to facilitate the forming of the rear longitudinal beam 1 and its connection with the rear cross beam 6, the rear longitudinal beam 1 is generally formed by enclosing multiple plates, that is, split forming, such as the rear longitudinal beam 1 includes a rear longitudinal beam upper plate 11 and a rear longitudinal beam lower plate 12, the rear longitudinal beam upper plate 11 is arranged on the upper side of the rear longitudinal beam 1, the rear longitudinal beam lower plate 12 is arranged on the lower side of the rear longitudinal beam 1, and the rear longitudinal beam upper plate 11 and the rear longitudinal beam lower plate 12 are jointly enclosed to form the rear longitudinal beam 1; or the rear longitudinal beam 1 includes a rear longitudinal beam upper plate 11, a rear longitudinal beam lower plate 12 and a rear longitudinal beam side plate 15, the rear longitudinal beam upper plate 11 is arranged on the upper side of the rear longitudinal beam 1, the rear longitudinal beam lower plate 12 is arranged on the lower side of the rear longitudinal beam 1, and the rear longitudinal beam upper plate 11 and the rear longitudinal beam lower plate 12 are arranged along the upper longitudinal beam ... rear longitudinal beam 11 and the rear longitudinal beam lower plate 12 are arranged along the rear longitudinal beam 11 and the rear longitudinal beam lower plate 12 are arranged along the rear longitudinal beam 11 and The upper plate 11 of the rear longitudinal beam is fixedly connected to the lower plate 12 of the rear longitudinal beam at the inner side of the rear longitudinal beam 1 (i.e., the side of the rear longitudinal beam 1 close to the rear cross beam 6), and the upper plate 11 of the rear longitudinal beam is fixedly connected to the lower plate 12 of the rear longitudinal beam at the outer side of the rear longitudinal beam 1 (i.e., the side of the rear longitudinal beam 1 far from the rear cross beam 6) through the rear longitudinal beam side plate 15, thereby forming the rear longitudinal beam 1; at this time, the upper plate 11 of the rear longitudinal beam and the lower plate 12 of the rear longitudinal beam are connected to the rear cross beam 6 together, and the reinforcing connecting plate 2 is arranged between the upper plate 11 of the rear longitudinal beam and the lower plate 12 of the rear longitudinal beam, so that the installation sleeve 3 is sequentially penetrated and connected to the lower plate 12 of the rear longitudinal beam, the reinforcing connecting plate 2 and the upper plate 11 of the rear longitudinal beam. Of course, in other embodiments, the rear longitudinal beam 1 can also be integrally formed.

[0047] In an embodiment of the utility model, the reinforcing connecting plate 2 includes an upper connecting plate 21 and a lower connecting plate 22 which are arranged at axial intervals along the mounting sleeve 3, the lower connecting plate 22 is fixed to the lower side of the rear longitudinal beam 1, and the upper connecting plate 21 is used to separate the inner cavity of the rear longitudinal beam 1 into a first chamber 13 and a second chamber 14. Specifically, the reinforcing connecting plate 2 includes an upper connecting plate 21 and a lower connecting plate 22. The upper connecting plate 21 serves as the main structure of the reinforcing connecting plate 2, and is used to separate the inner cavity of the rear longitudinal beam 1 into a first cavity 13 and a second cavity 14, thereby enhancing the structural stiffness of the rear longitudinal beam 1 at the rear subframe mounting location, and the lower connecting plate 22 is fixed to the lower side of the rear longitudinal beam 1, thereby improving the structural strength of the lower side of the rear longitudinal beam 1. Therefore, the first cavity 13 is often formed by the lower side of the rear longitudinal beam 1 and the upper connecting plate 21, and the second cavity 14 is often formed by the upper side of the rear longitudinal beam 1, the lower connecting plate 22 and the upper connecting plate 21, thereby improving the connection stiffness between the rear longitudinal beam 1 and the mounting sleeve 3.

[0048] It should be noted that the upper connecting plate 21 and the lower connecting plate 22 are arranged at intervals along the axial direction of the mounting sleeve 3, that is, the upper connecting plate 21 and the lower connecting plate 22 are connected to the mounting sleeve 3 at intervals, but this does not mean that there is no connection relationship between the two. And because the upper connecting plate 21 and the lower connecting plate 22 are arranged at intervals along the axial direction of the mounting sleeve 3, and the lower connecting plate 22 is arranged below the upper connecting plate 21, the mounting sleeve 3 is sequentially penetrated through the lower connecting plate 22 and the upper connecting plate 21. When the rear longitudinal beam 1 is formed by split molding, the lower connecting plate 22 is fixed to the lower plate 12 of the rear longitudinal beam. At this time, the mounting sleeve 3 is sequentially penetrated through the lower plate 12 of the rear longitudinal beam, the lower connecting plate 22, the upper connecting plate 21 and the upper plate 11 of the rear longitudinal beam.

[0049] In another embodiment of the utility model, the reinforcing connecting plate 2 includes an upper connecting plate and a lower connecting plate arranged at intervals along the axial direction of the mounting sleeve 3, the upper connecting plate is fixed to the upper side of the rear longitudinal beam 1, and the lower connecting plate is used to divide the inner cavity of the rear longitudinal beam 1 into two chambers.

[0050] To further improve the connection stability between the installation sleeve 3 and the reinforcing connecting plate 2 , in an embodiment of the utility model, the periphery of the installation sleeve 3 is welded and fixed to the upper connecting plate 21 , and the periphery of the installation sleeve 3 is welded and fixed to the lower connecting plate 22 . In the prior art, the mounting sleeve 3 and the rear longitudinal beam 1 are often welded in the form of axial strip weld overlap. This welding form has a small connection area between the mounting sleeve 3 and the rear longitudinal beam 1, and the connection stiffness is poor. Therefore, in this scheme, the periphery of the mounting sleeve 3 is welded and fixed to the upper connecting plate 21, and the periphery of the mounting sleeve 3 is welded and fixed to the lower connecting plate 22, that is, the mounting sleeve 3 is welded and fixed to the upper connecting plate 21 and the lower connecting plate 22 respectively by overlapping annular welds. When the annular weld is subjected to loads in any direction, it acts on a larger stress area, so that the upper connecting plate 21 and the lower connecting plate 22 are subjected to more uniform stress, and it can ensure that the weld has good fatigue resistance, reducing the risk of cracking and failure of the weld during long-term driving, and also helping to improve the connection stiffness between the mounting sleeve 3 and the upper connecting plate 21, and the mounting sleeve 3 and the lower connecting plate 22.

[0051] In other embodiments, the installation sleeve 3 may also be welded only to the upper connecting plate 21 through an overlapping girth weld, or the installation sleeve 3 may be welded only to the lower connecting plate 22 through an overlapping girth weld.

[0052] See also Figures 1 to 6 In an embodiment of the utility model, the upper connecting plate 21 includes a first side and a second side that are relatively arranged, the first side is fixed to a side of the rear longitudinal beam 1 close to the rear cross beam 6 of the vehicle, and the second side is fixed to a side of the rear longitudinal beam 1 away from the rear cross beam 6 of the vehicle.

[0053] Specifically, the side of the rear longitudinal beam 1 away from the rear cross beam 6 of the vehicle, that is, the side of the rear longitudinal beam 1 facing the outside of the vehicle (referred to as the outer side of the rear longitudinal beam 1), and the side of the rear longitudinal beam 1 away from the rear cross beam 6 of the vehicle, that is, the side of the rear longitudinal beam 1 facing the inside of the vehicle. (The inner side of the rear longitudinal beam 1) The upper connecting plate 21 is used to separate the inner cavity of the rear longitudinal beam 1 into a first cavity 13 and a second cavity 14, and the first side of the upper connecting plate 21 is fixed to the inner side of the rear longitudinal beam 1, and the second side is fixed to the outer side of the rear longitudinal beam 1, so as to ensure the fixing stability of the upper connecting plate 21 in the rear longitudinal beam 1.

[0054] Among them, if the rear longitudinal beam 1 is formed by splicing the rear longitudinal beam lower plate 12, the rear longitudinal beam upper plate 11 and the rear longitudinal beam side plate 15, the first side of the upper connecting plate 21 is clamped between the rear longitudinal beam lower plate 12 and the rear longitudinal beam upper plate 11, and the second side is fixed to the rear longitudinal beam side plate 15; if the rear longitudinal beam 1 is formed by splicing the rear longitudinal beam lower plate 12 and the rear longitudinal beam upper plate 11, the first side and the second side of the upper connecting plate 21 are both clamped between the rear longitudinal beam lower plate 12 and the rear longitudinal beam upper plate 11.

[0055] Further, in an embodiment of the utility model, the first side has a first flange 211, and the first flange 211 is connected to a side of the rear longitudinal beam 1 close to the rear cross beam 6 of the vehicle. Specifically, the first flange 211 increases the contact area between the first flange 211 and the rear longitudinal beam 1, thereby improving the fixing stability of the first side. In this embodiment, the first flange 211 and the rear longitudinal beam 1 are fixed by welding. Of course, in other embodiments, the first flange 211 and the rear longitudinal beam 1 can also be fixed by fasteners.

[0056] In another embodiment of the utility model, the second side has a second flange 212, and the second flange 212 is on the side of the rear longitudinal beam 1 away from the rear cross beam 6 of the vehicle. Specifically, the second flange 212 is folded upward or downward relative to the second side, and abuts against the side of the rear longitudinal beam 1 away from the rear cross beam 6 of the vehicle to improve the fixing stability of the second side and the rear longitudinal beam 1. In this embodiment, the second flange 212 and the rear longitudinal beam 1 are fixed by welding. Of course, in other embodiments, the second flange 212 and the rear longitudinal beam 1 can also be fixed by fasteners.

[0057] For further information, see Figures 3 to 6 The upper connecting plate 21 also includes two third sides arranged opposite to each other, and the two third sides are connected to the ends of the first side and the second side; the two third sides are provided with third flanges 213 extending toward the lower side close to the rear longitudinal beam 1, and the two third flanges 213 respectively press the two first side edges 221 of the lower connecting plate 22 against the rear longitudinal beam 1.

[0058] Specifically, the two third sides are the two side edges of the upper connecting plate 21 connecting the first side and the second side, and the two third sides of the upper connecting plate 21 are provided with a third flange 213 bent and extended downward, thereby pressing the two first side edges 221 of the lower connecting plate 22 to the lower side of the rear longitudinal beam 1, ensuring that the lower connecting plate 22 fits with the lower side of the rear longitudinal beam 1, and connecting the upper connecting plate 21 and the lower connecting plate 22 to the lower side of the rear longitudinal beam 1, thereby improving the connection stiffness and structural integrity.

[0059] Furthermore, a fourth flange 214 is formed on the side of the third flange 213 facing the lower plate 12 of the rear longitudinal beam, and the fourth flange 214 abuts against the first side 221 and is fixed to the lower plate 12 of the rear longitudinal beam. Specifically, the fourth flange 214 is provided on the side of the third flange 213 facing the lower side of the rear longitudinal beam 1, and is parallel to the lower connecting plate 22, so that the fourth flange 214 abuts against the first side 221, which can not only increase the contact area between the fourth flange 214 and the first side 221, but also improve the connection stiffness and structural integrity of the upper connecting plate 21, the lower connecting plate 22 and the rear longitudinal beam 1. In this embodiment, the fourth flange 214, the first side 221 and the rear longitudinal beam 1 are fixed by welding. Of course, in other embodiments, the fourth flange 214, the first side 221 and the rear longitudinal beam 1 can also be fixed by fasteners.

[0060] In order to further improve the connection stability between the upper connecting plate 21 and the rear longitudinal beam 1, in the embodiment of the utility model, along the extension direction of the third flange 213, the side of the third flange 213 is further provided with a fifth flange 215, and the fifth flange 215 is fixedly connected to the lower side of the rear longitudinal beam 1, that is, the side of the third flange 213 along its extension direction is provided with the fifth flange 215, so that the fifth flange 215 is further connected to the lower side of the rear longitudinal beam 1, and the connection stiffness and structural integrity of the upper connecting plate 21 and the rear longitudinal beam 1 are further improved. In this embodiment, the fifth flange 215 and the rear longitudinal beam 1 are fixed by welding. Of course, in other embodiments, the fifth flange 215 and the rear longitudinal beam 1 can also be fixed by fasteners.

[0061] In order to further improve the structural integrity of the upper connecting plate 21 and the lower connecting plate 22, in the embodiment of the present utility model, please refer to Figure 3 The lower connecting plate 22 includes a second side edge 222 disposed between the two first side edges 221, and the second side edge 222 has a sixth flange 223 extending toward the upper connecting plate 21, and the sixth flange 223 is fixedly connected to the upper connecting plate 21. Specifically, the second side edge 222 is bent toward the upper connecting plate 21, and can adapt to the shape of the upper connecting plate 21, and further flanged to abut and fix with the third flange 213, thereby further improving the connection stability between the upper connecting plate 21 and the lower connecting plate 22.

[0062] See also Figure 1 and Figure 2In the embodiment of the utility model, a bushing mounting plate 4 is provided on the lower side of the rear longitudinal beam 1, and the bushing mounting plate 4 is coated on the outside of the rear longitudinal beam 1 to enclose with the lower plate 12 of the rear longitudinal beam to form a third chamber 41, and the bushing mounting plate 4 is connected to the end of the mounting sleeve 3. Specifically, the bushing mounting plate 4 is connected to the end of the mounting sleeve 3 to reduce shock for the vehicle, protect the personnel and goods inside the vehicle from vibration discomfort, and provide a buffering effect for the assembly of the rear subframe and the rear subframe mounting structure 100, reduce excessive wear, and maintain the balance and safety performance of the vehicle. The bushing mounting plate 4 is coated on the outside of the lower side of the rear longitudinal beam 1, thereby improving the connection stability between the two, and the bushing mounting plate 4 and the rear longitudinal beam 1 enclose to form a third chamber 41, and the corresponding third chamber 41 is arranged on the side of the second chamber 14 away from the first chamber 13, so that the first chamber 13, the second chamber 14 and the third chamber 41 rely on each other and support each other, further improving the structural strength of the rear longitudinal beam 1. At the same time, the three chambers together form a large chamber, which further improves the rigidity and strength of the rear longitudinal beam 1 at the mounting point of the rear subframe, and helps to carry and transmit the road load transmitted by the subframe.

[0063] And because the bushing mounting plate 4 and the lower side of the rear longitudinal beam 1 are enclosed to form a third chamber 41, the bushing mounting plate 4 is protruded downwards compared to the rear longitudinal beam 1. This design form is helpful to increase the installation space between the rear subframe and the vehicle body, and is more helpful to adjust the position of components such as shock absorbers, thereby laying a foundation for chassis VD control. Preferably, the distance from the end of the bushing mounting plate 4 away from the rear longitudinal beam 1 to the rear longitudinal beam 1 is greater than or equal to 30mm; less than or equal to 200mm. If the distance from the end of the bushing mounting plate 4 away from the rear longitudinal beam 1 to the rear longitudinal beam 1 is less than 30mm, the installation space between the rear subframe and the vehicle body is too small, and the effect of adjusting the position of components such as shock absorbers is limited. If the distance from the end of the bushing mounting plate 4 away from the rear longitudinal beam 1 to the rear longitudinal beam 1 is greater than 200mm, the bushing mounting plate 4 protrudes downwards too much compared to the rear longitudinal beam 1, resulting in a small distance between the vehicle chassis and the ground, which is not conducive to the driving safety of the vehicle. Specifically, the distance from one end of the bushing mounting plate 4 away from the rear longitudinal beam 1 to the rear longitudinal beam 1 can be 30 mm, 50 mm, 70 mm, 90 mm, 110 mm, 130 mm, 150 mm, 170 mm, 180 mm, 200 mm, etc.

[0064] See also Figure 1In the embodiment of the utility model, a bushing installation reinforcement plate 5 is provided on the side of the bushing installation plate 4 away from the rear longitudinal beam 12, one side of the bushing installation reinforcement plate 5 is at least connected to the bushing installation plate 4, and the other side is used to connect to the rear cross beam 6 of the vehicle. Specifically, the bushing installation reinforcement plate 5 can further improve the strength of the bushing installation plate 4, and one side of the bushing installation reinforcement plate 5 is at least connected to the bushing installation plate 4, and the other side is used to connect to the rear cross beam 6 of the vehicle, thereby further improving the installation strength of the rear longitudinal beam 1 and the rear cross beam 6. One side of the bushing installation reinforcement plate 5 is at least connected to the bushing installation plate 4, that is, one side of the bushing installation reinforcement plate 5 can only cover the bushing installation plate 4, and can also cover the bushing installation plate 4 and the rear longitudinal beam 1 at the same time.

[0065] The utility model also proposes a vehicle, which includes a rear subframe mounting structure 100. The specific structure of the rear subframe mounting structure 100 refers to the above-mentioned embodiment. Since the vehicle adopts all the technical solutions of all the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here one by one.

[0066] The above are only exemplary embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect applications in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A rear subframe mounting structure, characterized in that: include: rear longitudinal beam; A reinforcing connecting plate is fixed in the rear longitudinal beam and divides the inner cavity of the rear longitudinal beam into a first cavity and a second cavity arranged in an upward and downward direction; as well as The mounting sleeve is used for mounting the rear sub-frame of the vehicle, and the mounting sleeve is passed through and connected to the rear longitudinal beam and the reinforcing connecting plate.

2. The rear subframe mounting structure according to claim 1, characterized in that: The reinforcing connecting plate includes an upper connecting plate and a lower connecting plate which are spaced apart along the axial direction of the mounting sleeve, the lower connecting plate is fixed to the lower side of the rear longitudinal beam, and the upper connecting plate is used to separate the inner cavity of the rear longitudinal beam into a first cavity and a second cavity.

3. The rear subframe mounting structure according to claim 2, characterized in that: The periphery of the mounting sleeve is welded and fixed to the upper connecting plate; and / or the periphery of the mounting sleeve is welded and fixed to the lower connecting plate.

4. The rear subframe mounting structure according to claim 2, characterized in that: The upper connecting plate includes a first side and a second side that are oppositely arranged, wherein the first side is fixed to a side of the rear longitudinal beam close to the rear cross beam of the vehicle, and the second side is fixed to a side of the rear longitudinal beam away from the rear cross beam of the vehicle.

5. The rear subframe mounting structure according to claim 4, characterized in that: The first side has a first flange, and the first flange is connected to a side of the rear longitudinal beam close to the rear cross beam of the vehicle; and / or, The second side has a second flange, and the second flange is connected to a side of the rear longitudinal beam away from the rear cross beam of the vehicle.

6. The rear subframe mounting structure according to claim 4, characterized in that: The upper connecting plate further comprises two third sides arranged opposite to each other, and the two third sides are both connected to the ends of the first side and the second side; The two third sides are both provided with third flanges extending toward the lower side close to the rear longitudinal beam, and the two third flanges respectively press the two first side edges of the lower connecting plate against the rear longitudinal beam.

7. The rear subframe mounting structure according to claim 6, characterized in that: A fourth flange is formed on one side of the third flange facing the lower side of the rear longitudinal beam, the fourth flange abuts against the first side and is fixed to the rear longitudinal beam; and / or, Along the extension direction of the third flange, a fifth flange is further provided on the side of the third flange, and the fifth flange is fixedly connected to the lower side of the rear longitudinal beam; and / or, The lower connecting plate includes a second side edge arranged between the two first side edges, the second side edge has a sixth flange extending toward the upper connecting plate, and the sixth flange edge is fixedly connected to the upper connecting plate.

8. The rear subframe mounting structure according to any one of claims 1 to 7, characterized in that: A bushing mounting plate is provided on the lower side of the rear longitudinal beam, and the bushing mounting plate is covered on the outside of the rear longitudinal beam to enclose the rear longitudinal beam to form a third chamber, and the bushing mounting plate is connected to the end of the mounting sleeve.

9. The rear subframe mounting structure according to claim 8, characterized in that: A bushing installation reinforcement plate is provided on the side of the bushing installation plate away from the rear longitudinal beam, one side of the bushing installation reinforcement plate is at least connected to the bushing installation plate, and the other side is used to connect to the rear cross beam of the vehicle; and / or, The distance from one end of the bushing mounting plate away from the rear longitudinal beam to the rear longitudinal beam is greater than or equal to 30 mm; and less than or equal to 200 mm.

10. A vehicle, characterized in that: It comprises the rear subframe mounting structure according to any one of claims 1 to 9.

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