Rear subframe mounting structure and vehicle

Abstract

The utility model discloses a rear auxiliary frame installation structure which comprises an installation plate assembly arranged between a vehicle body rear longitudinal beam and a vehicle body rear auxiliary frame, the installation plate assembly comprises an installation plate body, and one end of the installation plate body is connected with the side wall of the rear longitudinal beam. A reinforcing assembly used for reinforcing connection between the mounting plate body and the side wall of the rear longitudinal beam is arranged in the mounting plate body and connected with the mounting plate body and the side wall of the rear longitudinal beam, and a closed cavity is formed by the reinforcing assembly, the mounting plate body and the side wall of the rear longitudinal beam. A rear auxiliary frame mounting point is arranged at the position, located in the closed cavity, of the mounting plate body; according to the utility model, the mounting structure between the rear auxiliary frame and the rear longitudinal beam is improved, so that the mounting point of the rear auxiliary frame is positioned outside the rear longitudinal beam structure, and meanwhile, the performance requirements of rigidity and the like at the mounting point can be met; according to the vehicle provided with the rear auxiliary frame structure, when the rear auxiliary frame is designed on a chassis, more types of rear auxiliary frames can be selected.

Description

Technical Field

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

[0002] The rear subframe is one of the main pathways for road excitation to be transmitted to the vehicle body through the suspension. Therefore, it is necessary to control the dynamic stiffness of the rear subframe on the vehicle body side installation point, enhance vehicle body vibration isolation, reduce the force transmitted from the chassis to the vehicle body, and avoid loud road noise causing passenger complaints.

[0003] In the prior art, conventional rear subframe mounting points are usually arranged on the rear longitudinal beam, and the rear longitudinal beam is the main force transmission path of the vehicle body, and the overall structure can easily meet the stiffness performance requirements at the rear subframe mounting point. With the in-depth research and development of automobile body technology, in order to meet the needs of different models for the chassis structure of the body, it is necessary to move the conventional rear subframe mounting point from the rear longitudinal beam to a position such as the rear floor beam outside the longitudinal beam, and by narrowing the installation spacing of the rear subframe in the width direction of the vehicle body, the overall rear subframe size is deformed, thereby improving and enhancing the overall performance of the chassis and rear suspension. However, after the rear subframe mounting point is moved outside the longitudinal beam, the stiffness performance requirements of its mounting point cannot be met. Therefore, it is necessary to optimize the mounting structure at the rear subframe mounting point so that the mounting point arranged outside the longitudinal beam can also meet the stiffness and other requirements. Utility Model Content

[0004] In view of this, the utility model provides a rear subframe mounting structure and a vehicle, which improves the mounting structure between the rear subframe and the rear longitudinal beam so that the rear subframe mounting point is located outside the rear longitudinal beam structure, while also meeting the performance requirements such as stiffness at the mounting point.

[0005] The utility model provides a rear subframe mounting structure, including a mounting plate assembly arranged between a rear longitudinal beam of a vehicle body and the rear subframe of the vehicle body, the mounting plate assembly including a mounting plate body having one end connected to a side wall of the rear longitudinal beam, a reinforcing assembly for reinforcing the connection between the mounting plate body and the side wall of the rear longitudinal beam being arranged in the mounting plate body, the reinforcing assembly being respectively connected to the mounting plate body and the side wall of the rear longitudinal beam and jointly forming a closed cavity, and a rear subframe mounting point being arranged at a position of the mounting plate body located in the closed cavity.

[0006] Furthermore, the reinforcement assembly includes a first bracket for forming a closed cavity with the mounting plate body and the rear longitudinal beam side wall, wherein one end of the first bracket in the vehicle body width direction is connected to the bottom of the mounting plate body, and the other end is connected to the rear longitudinal beam side wall.

[0007] Furthermore, the reinforcement assembly also includes a second bracket arranged in the closed cavity, the top of the second bracket is connected to the first bracket and the bottom of the second bracket is connected to the bottom of the mounting plate body and divides the closed cavity into two chambers in the width direction of the vehicle body, and the rear subframe mounting point is located at the bottom of the chamber close to the rear longitudinal beam.

[0008] Furthermore, a mounting sleeve for mounting the rear subframe is provided at the mounting point of the rear subframe, and mounting holes are provided at positions of the first bracket, the second bracket and the mounting plate body corresponding to the mounting point of the rear subframe in the vertical direction, and the mounting holes are used for the mounting sleeve to connect with the first bracket, the second bracket and the mounting plate body respectively.

[0009] Furthermore, the cross-section of the second bracket in the length direction of the vehicle body is an "L"-shaped structure, and the top of the second bracket is provided with a first flange portion for connecting with the first bracket, and the second bracket is also provided with second flange portions on both sides along the length direction of the vehicle body for connecting with the side walls of the mounting plate body.

[0010] Furthermore, it also includes a skid mounting plate arranged at the bottom of the rear longitudinal beam for connecting the side wall of the rear longitudinal beam with the mounting plate assembly, the skid mounting plate is a box-shaped structure with an open top, and the two side walls of the skid mounting plate in the length direction of the vehicle body are bent outward along the length direction of the vehicle body to form a third flange portion for connecting to the bottom surface of the rear longitudinal beam, and the two side walls of the skid mounting plate in the width direction of the vehicle body extend upward in the height direction of the vehicle body to form an extension portion, one side of the extension portion is connected to the side wall of the rear longitudinal beam, and the other side is connected to the mounting plate assembly.

[0011] Furthermore, a fourth flange portion overlapping the top of the mounting plate body is provided on the top of the extension portion of the sled mounting plate close to the mounting plate body, and the fourth flange portion is formed by bending the top of the extension portion of the sled mounting plate close to the mounting plate body toward the top of the mounting plate body.

[0012] Furthermore, the cross-section of the mounting plate body in the width direction of the vehicle body is a "U"-shaped structure, and the top of the side wall of the mounting plate body is provided with a fifth flange portion for connecting with the fourth flange portion, and the fifth flange portion is formed by bending the top of the side wall of the mounting plate body toward the length direction of the vehicle body.

[0013] Furthermore, it also includes a rear longitudinal beam reinforcement member arranged inside the rear longitudinal beam and located at the connection between the rear longitudinal beam and the mounting plate assembly, and the rear longitudinal beam reinforcement member is used to form a reinforcement structure with the rear longitudinal beam and provide side support for the mounting plate assembly.

[0014] A vehicle comprises a rear longitudinal beam and the above-mentioned rear subframe mounting structure.

[0015] Furthermore, a rear longitudinal beam reinforcement is provided inside the rear longitudinal beam at the connection between the rear longitudinal beam and the mounting plate assembly, and the rear longitudinal beam reinforcement is used to form a reinforcement structure with the rear longitudinal beam and to provide side support for the mounting plate assembly.

[0016] The beneficial effects of the utility model are as follows: the rear subframe mounting structure and the vehicle provided by the utility model improve the mounting structure between the rear subframe and the rear longitudinal beam, so that the mounting point of the rear subframe is located outside the rear longitudinal beam structure, and at the same time, the performance requirements such as the stiffness at the mounting point can be met; and the vehicle equipped with the rear subframe structure can select more various rear subframe forms when designing the rear subframe of the chassis. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0018] Figure 1 It is a structural schematic diagram of the installation structure of the mid-rear subframe of the utility model;

[0019] Figure 2 It is a bottom view of the structure of the installation structure of the middle and rear subframe of the utility model;

[0020] Figure 3 It is a structural schematic diagram of the mounting plate assembly in the utility model;

[0021] Figure 4 It is a schematic diagram of the connection between the mounting plate body and the reinforcement component in the utility model;

[0022] Figure 5 It is a schematic diagram of the connection between the mounting plate body and the second bracket in the utility model;

[0023] Figure 6 It is a schematic diagram of the connection between the first bracket and the second bracket in the utility model;

[0024] Figure 7 It is a structural schematic diagram of the second bracket in the utility model;

[0025] The figures are marked as follows: 1-rear longitudinal beam; 2-mounting plate body; 3-first bracket; 4-second bracket; 5-mounting sleeve; 6-sled mounting plate; 7-rear longitudinal beam reinforcement; 201-fifth flange portion; 301-sixth flange portion; 302-seventh flange portion; 401-third flange portion; 402-fourth flange portion; 601-first flange portion; 602-extension portion; 603-second flange portion. DETAILED DESCRIPTION

[0026] As shown in the figure, the utility model provides a rear subframe mounting structure, including a mounting plate assembly arranged between a rear longitudinal beam 1 of a vehicle body and a rear subframe of the vehicle body, the mounting plate assembly including a mounting plate body 2 connected to the side wall of the rear longitudinal beam 1 at one end, a reinforcing assembly for reinforcing the connection between the mounting plate body 2 and the side wall of the rear longitudinal beam 1 is arranged in the mounting plate body 2, the reinforcing assembly is respectively connected to the mounting plate body 2 and the side wall of the rear longitudinal beam 1 and jointly forms a closed cavity, the mounting plate body 2 is provided with a rear subframe mounting point at a portion located in the closed cavity; wherein the rear longitudinal beam 1 of the vehicle body and the rear subframe of the vehicle body are conventional components on the existing vehicle body structure, The rear subframe mounting point is not directly connected to the rear longitudinal beam 1, but is mainly arranged at the outer side of the rear longitudinal beam 1 and connected and installed with the rear longitudinal beam 1 through the mounting plate assembly. At the same time, the reinforcing assembly, the mounting plate body 2 and the rear longitudinal beam jointly form a closed cavity. By setting the rear subframe mounting point at the position where the mounting plate body 2 is located in the closed cavity, the stiffness performance of the rear subframe mounting point at this location can be effectively improved, so that the rear subframe mounting point can be installed outside the longitudinal beam and can also meet the installation performance requirements at the rear subframe mounting point, thereby narrowing the installation spacing of the rear subframe in the width direction of the vehicle body, deforming the overall rear subframe size, and ultimately improving and enhancing the overall performance of the chassis and rear suspension.

[0027] In this embodiment, the reinforcement assembly includes a first bracket 3 for forming a closed cavity with the mounting plate body 2 and the side wall of the rear longitudinal beam 1, wherein one end of the first bracket 3 in the width direction of the vehicle body is connected to the bottom of the mounting plate body 2, and the other end is connected to the side wall of the rear longitudinal beam 1; Figure 1 , Figure 3 and Figure 6 It can be seen that the first bracket 3 is located inside the mounting plate body 2 and one end close to the interior of the vehicle in the vehicle body width direction is welded and fixed to the bottom of the mounting plate body 2, while the other end is connected to the side wall of the rear longitudinal beam 1 (in this solution, it is mainly welded and fixed to the extension portion 602 of the skid mounting plate 6 installed on the side wall of the rear longitudinal beam 1), thereby forming a closed cavity together with the rear longitudinal beam 1 inside the mounting plate body 2 to ensure the overall stiffness performance requirements of the rear subframe mounting point; wherein the top surface circumference of the first bracket 3 is formed with a flange portion upward and includes a sixth flange portion 301 for welding to the side wall of the mounting plate body 2 and a seventh flange portion 302 for connecting to the side wall of the rear longitudinal beam 1, and the connection strength of the first bracket 3 is ensured by the above-mentioned flange structure.

[0028] In this embodiment, the reinforcement assembly further includes a second bracket 4 disposed in the closed cavity, the top of the second bracket 4 is connected to the first bracket 3 and the bottom of the second bracket 4 is connected to the bottom of the mounting plate body 2 and divides the closed cavity into two chambers in the width direction of the vehicle body, and the rear subframe mounting point is located at the bottom of the chamber close to the rear longitudinal beam; Figure 4 and Figure 6 It can be seen that the second bracket 4 is arranged in the closed cavity and the top is welded and fixed to the bottom surface of the first bracket 3, and the bottom is welded and fixed to the bottom of the mounting plate body 2. At the same time, the second bracket 4 divides the closed cavity into two chambers in the width direction of the vehicle body, and the rear subframe mounting point is located at the bottom of the chamber close to the rear longitudinal beam 1, so as to strengthen the overall structural strength of the mounting plate assembly, thereby ensuring and improving the stiffness performance of the rear subframe mounting point.

[0029] In this embodiment, a mounting sleeve 5 for mounting the rear sub-frame is provided at the mounting point of the rear sub-frame, and mounting holes are provided at the positions of the first bracket 3, the second bracket 4 and the mounting plate body 2 corresponding to the mounting point of the rear sub-frame in the vertical direction, and the mounting holes are used for the mounting sleeve 5 to be connected to the first bracket 3, the second bracket 4 and the mounting plate body 2 respectively; Figures 3 to 6 As shown, the mounting sleeve 5 is a mounting threaded sleeve which is mainly mounted at the rear sub-frame mounting point on the mounting plate assembly and is used to connect with the rear sub-frame, wherein the first bracket 3, the second bracket 4 and the mounting plate body 2 are provided with mounting holes at positions corresponding to the rear sub-frame mounting points in the vertical direction, and the mounting sleeve 5 passes through the first bracket 3, the second bracket 4 and the mounting plate body 2 in sequence through the mounting holes, and is respectively connected and fixed to the first bracket 3, the second bracket 4 and the mounting plate body 2 by welding, and the side of the mounting sleeve 5 is also welded to the side of the second bracket 4.

[0030] In this embodiment, the cross section of the second bracket 4 in the length direction of the vehicle body is an "L"-shaped structure, the top of the second bracket 4 is provided with a first flange portion 401 for connecting with the first bracket 3, and the second bracket 4 is also provided with second flange portions 402 for connecting with the side walls of the mounting plate body 2 on both sides along the length direction of the vehicle body; Figure 7 As shown, the second bracket 4 is designed to be an L-shaped structure, and the top and side are respectively designed with a first flange portion 401 and a second flange portion 402, the bottom surface of the second bracket 4 is connected to the mounting sleeve 5 by protective welding and is spot welded to the mounting plate body 2; in order to ensure that the second bracket 4 and the mounting sleeve 5 are firmly connected, a symbol-shaped groove and a welding strip hole are provided on the side wall of the second bracket 4 in the vertical direction, the mounting sleeve 5 is initially installed and positioned with the second bracket through the symbol-shaped groove, and then is protectively welded to the mounting sleeve 5 through the welding strip hole; at the same time, the top of the mounting sleeve 5 is welded to the bottom surface of the first bracket 3, so that the mounting sleeve 5 and the second bracket 4 are firmly connected together; and the bottom surface, side surface and top surface of the second bracket 4 are respectively welded to the mounting plate body 2, the sled mounting plate 6 and the first bracket 3, forming a complete closed cavity structure, so as to improve the local stiffness of the sub-frame mounting point.

[0031] In this embodiment, it also includes a sled mounting plate 6 arranged at the bottom of the rear longitudinal beam for connecting the side wall of the rear longitudinal beam with the mounting plate assembly. The sled mounting plate 6 is a box-shaped structure with an open top. The two side walls of the sled mounting plate 6 in the length direction of the vehicle body are bent outwardly along the length direction of the vehicle body to form a third flange portion 601 for connecting with the bottom surface of the rear longitudinal beam. The two side walls of the sled mounting plate 6 in the width direction of the vehicle body are extended upward in the height direction of the vehicle body to form an extension portion 602. One side of the extension portion 602 is connected to the side wall of the rear longitudinal beam, and the other side is connected to the mounting plate assembly. Figure 2 and Figure 3 As shown, the mounting plate assembly is mainly connected and fixed to the rear longitudinal beam 1 through the sled mounting plate 6, wherein the sled mounting plate 6 is a mounting and fixing part used for lifting and transporting parts by sled equipment during the parts transportation process, and the sled mounting plate 6 is mainly fixed to the bottom of the rear longitudinal beam 1 and is a box-shaped structure with an open top as a whole, and the two side walls of the sled mounting plate 6 in the length direction of the vehicle body are bent outward along the length direction of the vehicle body to form a third flange portion 601 for welding and fixing to the bottom surface of the rear longitudinal beam, and the two side walls in the width direction of the vehicle body are extended upward in the height direction of the vehicle body to form an extension portion 602, and are welded and fixed to the side wall of the rear longitudinal beam 1 through one side of the extension portion, and welded to the mounting plate assembly on the other side, thereby ensuring the connection strength between the sled mounting plate 6 and the rear longitudinal beam while ensuring the connection strength between the sled mounting plate 6 and the rear longitudinal beam assembly.

[0032] In this embodiment, a fourth flange portion 603 overlapping the top of the mounting plate body 2 is provided at the top of the extension portion 602 on the sled mounting plate 6 close to the mounting plate body 2. The fourth flange portion 603 is formed by bending the top of the extension portion 602 on the sled mounting plate 6 close to the mounting plate body toward the top of the mounting plate body 2; Figure 3 As shown, the sled mounting plate 6 is provided with a fourth flange portion 603 welded and fixed to the top of the mounting plate body 2 at the top of the extension portion 602 close to the mounting plate body 2. In addition to being welded to the mounting plate body 2 in the width direction of the vehicle body, it is also welded to the mounting plate body 2 in the height direction of the vehicle body, thereby improving the connection strength between the sled mounting plate 6 and the mounting plate body 2; at the same time, on the side of the extension portion 602 of the sled mounting plate 6 close to the mounting plate assembly, the first bracket 3 and the second bracket 4 are also welded and fixed to the extension portion 602, and the bottom of the second bracket 4 also extends toward the rear longitudinal beam direction and overlaps the outer bottom surface of the sled mounting plate 6, ensuring that the mounting plate assembly and the sled mounting plate 6 are firmly connected.

[0033] In this embodiment, the cross section of the mounting plate body 2 in the width direction of the vehicle body is a "U"-shaped structure, and the top of the side wall of the mounting plate body 2 is provided with a fifth flange portion 201 for connecting with the fourth flange portion 603, and the fifth flange portion 201 is formed by bending the top of the side wall of the mounting plate body 2 toward the length direction of the vehicle body; Figure 3 As shown, a fifth flange portion 201 is provided on the top of the side wall of the mounting plate body 2 and is welded and fixed to the fourth flange portion 603 on the slide mounting plate 6 through the fifth flange portion 201. At the same time, the fifth flange portion 201 can also be welded to the vehicle body structure above the mounting plate body 2 to ensure the connection strength of the mounting plate assembly.

[0034] This embodiment also provides a vehicle, including a rear longitudinal beam 1 and the above-mentioned rear subframe mounting structure; the rear subframe mounting structure can make the rear subframe mounting point position outside the rear longitudinal beam 1 structure, and at the same time can also meet the performance requirements such as stiffness at the mounting point; by arranging the rear subframe mounting structure on the vehicle, when designing the rear subframe of the chassis, more various rear subframe forms can be selected, thereby improving the overall performance of the chassis and the rear suspension.

[0035] In this embodiment, a rear longitudinal beam reinforcement 7 is provided inside the rear longitudinal beam 1 at the connection between the rear longitudinal beam 1 and the mounting plate assembly. The rear longitudinal beam reinforcement 7 is used to form a reinforcement structure with the rear longitudinal beam 2 and to provide lateral support for the mounting plate assembly. Figure 1 As shown, in order to strengthen the overall strength of the connection between the rear longitudinal beam 1 and the mounting plate assembly and prevent the rear longitudinal beam from being affected by the rear subframe mounting point and being deformed and damaged due to excessive stress in the width direction of the vehicle body, a rear longitudinal beam reinforcement 7 is provided inside the rear longitudinal beam 1 at the connection with the mounting plate assembly. After the rear longitudinal beam reinforcement 7 is connected to the rear longitudinal beam 1, a cavity structure can also be formed, thereby improving the overall strength of the rear longitudinal beam at this location and providing side support for the mounting plate assembly.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A rear subframe mounting structure, characterized in that: It includes a mounting plate assembly arranged between the rear longitudinal beam of the vehicle body and the rear subframe of the vehicle body, the mounting plate assembly includes a mounting plate body having one end connected to the side wall of the rear longitudinal beam, a reinforcing assembly for reinforcing the connection between the mounting plate body and the side wall of the rear longitudinal beam is arranged in the mounting plate body, the reinforcing assembly is respectively connected to the mounting plate body and the side wall of the rear longitudinal beam and together form a closed cavity, and the mounting plate body is provided with a rear subframe mounting point at a position located in the closed cavity.

2. The rear subframe mounting structure according to claim 1, characterized in that: The reinforcement assembly includes a first bracket for forming a closed cavity with the mounting plate body and the rear longitudinal beam side wall, wherein one end of the first bracket in the vehicle body width direction is connected to the bottom of the mounting plate body, and the other end is connected to the rear longitudinal beam side wall.

3. The rear subframe mounting structure according to claim 2, characterized in that: The reinforcement assembly also includes a second bracket arranged in the closed cavity, the top of the second bracket is connected to the first bracket and the bottom of the second bracket is connected to the bottom of the mounting plate body and divides the closed cavity into two chambers in the width direction of the vehicle body, and the rear subframe mounting point is located at the bottom of the chamber close to the rear longitudinal beam.

4. The rear subframe mounting structure according to claim 3, characterized in that: A mounting sleeve for mounting the rear sub-frame is provided at the mounting point of the rear sub-frame, and mounting holes are provided at the positions of the first bracket, the second bracket and the mounting plate body corresponding to the mounting point of the rear sub-frame in the vertical direction, and the mounting holes are used for the mounting sleeve to connect with the first bracket, the second bracket and the mounting plate body respectively.

5. The rear subframe mounting structure according to claim 3, characterized in that: The cross-section of the second bracket in the length direction of the vehicle body is an "L"-shaped structure. The top of the second bracket is provided with a first flange portion for connecting with the first bracket. The second bracket is also provided with second flange portions on both sides along the length direction of the vehicle body for connecting with the side walls of the mounting plate body.

6. The rear subframe mounting structure according to claim 1, characterized in that: It also includes a skid mounting plate arranged at the bottom of the rear longitudinal beam for connecting the side wall of the rear longitudinal beam with the mounting plate assembly, the skid mounting plate is a box-shaped structure with an open top, and both side walls of the skid mounting plate in the length direction of the vehicle body are bent outward along the length direction of the vehicle body to form a third flange portion for connecting to the bottom surface of the rear longitudinal beam, and both side walls of the skid mounting plate in the width direction of the vehicle body extend upward in the height direction of the vehicle body to form an extension portion, one side of the extension portion is connected to the side wall of the rear longitudinal beam, and the other side is connected to the mounting plate assembly.

7. The rear subframe mounting structure according to claim 6, characterized in that: A fourth flange portion overlapping the top of the mounting plate body is provided on the top of the extension portion of the sled mounting plate close to the mounting plate body, and the fourth flange portion is formed by bending the top of the extension portion of the sled mounting plate close to the mounting plate body toward the top of the mounting plate body.

8. The rear subframe mounting structure according to claim 7, characterized in that: The cross-section of the mounting plate body in the width direction of the vehicle body is a "U"-shaped structure, and the top of the side wall of the mounting plate body is provided with a fifth flange portion for connecting with the fourth flange portion, and the fifth flange portion is formed by bending the top of the side wall of the mounting plate body toward the length direction of the vehicle body.

9. A vehicle, characterized in that: The vehicle comprises a rear longitudinal beam and a rear subframe mounting structure as claimed in any one of claims 1 to 8.

10. The vehicle according to claim 9, characterized in that: A rear longitudinal beam reinforcement is arranged inside the rear longitudinal beam at the connection between the rear longitudinal beam and the mounting plate assembly. The rear longitudinal beam reinforcement is used to form a reinforcement structure with the rear longitudinal beam and to provide side support for the mounting plate assembly.

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