Auxiliary frame assembly and automobile

Abstract

The utility model discloses an auxiliary frame assembly and an automobile, the auxiliary frame assembly is connected with a wheel through a swing arm, the auxiliary frame assembly comprises an auxiliary frame and a swing arm installation structure, and one end of the swing arm is connected to the auxiliary frame; the swing arm mounting structure is connected with the auxiliary frame in a welding manner, and the swing arm mounting structure is provided with a mounting space; the other end of the swing arm is located in the installation space and detachably connected with the swing arm installation structure. The swing arm mounting structure is welded to the auxiliary frame, and the swing arm is detachably connected with the swing arm mounting structure, so that the thickness of the swing arm mounting structure is increased conveniently, and the mounting stability and rigidity between the swing arm mounting structure and the swing arm are improved; and meanwhile, the size of the mounting point is convenient to adjust, the process adjustment is simplified, and the production efficiency and the yield are improved.

Description

[Technical field]

[0001] The utility model relates to the technical field of automobiles, in particular to a subframe assembly and an automobile. [Background technology]

[0002] In the automotive field, the frame is an important safety and load-bearing component in the chassis; as the load-bearing matrix of the front part of the car, the subframe and the swing arm bear and transmit various forces and moments during driving, which requires the subframe and the swing arm to have a certain stiffness and strength.

[0003] In the related art, the rear bushing of the lower control arm is directly fixed on the subframe, that is, the upper and lower sheet metals of the subframe need to completely surround the rear bushing of the control arm. Such a setting will increase the overall weight of the subframe assembly, thereby increasing the overall weight of the vehicle. At the same time, it is not convenient to adjust the position of the rear mounting point of the control arm, and is not suitable for many models. [Contents of the utility model]

[0004] The main purpose of the utility model is to provide a subframe assembly, which aims to facilitate the increase of the thickness of the swing arm mounting structure by welding the swing arm mounting structure to the subframe, and the swing arm and the swing arm mounting structure are detachably connected, so as to improve the stability and rigidity of the installation between the swing arm and the swing arm; at the same time, it is also convenient to adjust the size of this installation point, simplify the process adjustment, and improve the production efficiency and yield rate.

[0005] In order to achieve the above-mentioned object, the utility model provides a subframe assembly of an automobile, wherein the subframe assembly of the automobile comprises:

[0006] a subframe to which one end of the swing arm is connected; and

[0007] A swing arm mounting structure, wherein the swing arm mounting structure is connected to the subframe by welding, and the swing arm mounting structure has an installation space; the other end of the swing arm is located in the installation space and is detachably connected to the swing arm mounting structure.

[0008] In one embodiment of the utility model, the swing arm mounting structure comprises a first mounting member and a second mounting member connected to each other, and the mounting space is formed between the first mounting member and the second mounting member; the subframe comprises an upper surface and a lower surface arranged opposite to each other along a first direction;

[0009] The first mounting member is welded to the upper surface, and the second mounting member is welded to the lower surface.

[0010] In one embodiment of the present invention, the first mounting member comprises:

[0011] a first connection portion welded to the upper surface; and

[0012] The second connection portion is connected to the first connection portion, and the second connection portion is connected to the second mounting member and the sub-frame.

[0013] In an embodiment of the present invention, the second connection portion is bent to connect to the first connection portion and is extended along a first direction.

[0014] In an embodiment of the present invention, the second connecting portion is provided with a through hole, and the second connecting portion is welded to the sub-frame through the through hole.

[0015] In one embodiment of the present utility model, the subframe includes a crossbeam body and two longitudinal beam bodies, the two longitudinal beam bodies are respectively connected to the two ends of the crossbeam body along the second direction, and the connection between each longitudinal beam body and the crossbeam body forms a mounting position;

[0016] The first mounting member and the second mounting member are both located at the mounting position and are both welded to the cross beam body and the longitudinal beam body.

[0017] In an embodiment of the present invention, the second connection portion has a first welding surface and a second welding surface that are adjacent to each other, the first welding surface is welded to the beam body, and the second welding surface is welded to the second mounting member.

[0018] In an embodiment of the present invention, the sub-frame assembly further includes a mounting arm structure, and the mounting arm structure is disposed on the longitudinal beam body and extends along the first direction.

[0019] The utility model also proposes an automobile, which includes a body, a swing arm, a subframe assembly and wheels. The subframe is arranged at the bottom of the body and is bolted to the body. One end of the swing arm is detachably connected to the swing arm mounting structure of the subframe assembly, and one end of the swing arm is connected to the wheel hub bracket.

[0020] In one embodiment of the utility model, the swing arm further comprises a bushing and a bolt, and the bushing is located in the installation space;

[0021] The swing arm mounting structure is provided with a first mounting member and a second mounting member connected to each other, and mounting holes are provided on the first mounting member and the second mounting member. A bolt passes through the mounting hole of the first mounting member and the mounting hole of the second mounting member in sequence and is screwed to the bushing.

[0022] After adopting the above technical scheme, the beneficial effects are as follows: the subframe can be regarded as the frame of the automobile suspension system, and its function is to provide a stable installation foundation for other suspension components to ensure the stability and comfort of the automobile during driving; the swing arm is used to connect the subframe and the wheel. Generally speaking, the swing arm is arranged in a triangular shape, and one end with a ball head is connected to the wheel hub of the wheel, so as to transmit the vibration and impact of the wheel to the subframe, and play a role in shock absorption and buffering; the remaining two ends are connected to the subframe to maintain the stability of the swing arm during driving of the automobile; the swing arm mounting structure is welded to the subframe, so that the connection between it and the subframe is stable, and the installation space is used to provide a reliable installation position for the swing arm. It can be seen from the above that the swing arm mounting structure enables a stable connection between the swing arm and the subframe; the swing arm mounting structure and the swing arm are arranged to be detachably connected, so as to facilitate the disassembly and assembly of the two. At the same time, the swing arm is connected to the swing arm mounting structure through a flexible member, so that the swing arm is allowed to move within a certain range to adapt to different driving conditions and road conditions, and the other end of the swing arm is connected to the subframe bolts and nuts, so as to maintain its overall stability.

Brief Description of the Drawings

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments 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 these drawings without paying creative labor.

[0024] Figure 1 A schematic diagram of the overall structure of a sub-frame assembly provided in an embodiment of the present application;

[0025] Figure 2 A schematic diagram of the overall structure of a sub-frame assembly from another angle provided in an embodiment of the present application;

[0026] Figure 3 A schematic diagram of the overall structure of a sub-frame assembly from another angle provided in an embodiment of the present application;

[0027] Figure 4 This is a schematic diagram of the overall structure of the swing arm mounting structure provided in an embodiment of the present application.

[0028] Description of Figure Numbers:

[0029] Label name Label name 100 Subframe components 10 Subframe 11 Beam body 13 Longitudinal beam body 15 Installation position 17 Mounting arm structure 30 Swing arm mounting structure 31 First mounting piece 311 First connection part 313 Second connection part 315 Through Hole 317 First welding surface 319 Second welding surface 33 Second mounting piece 35 Installation space 37 Mounting holes 171 Left mounting arm 173 Right mounting arm 175 Install the tower 177 Install the casing 50 Suspension mounting points [Specific implementation method]

[0030] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0031] It should be clear that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0032] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

[0033] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0034] Reference Figures 1 to 4 The utility model proposes a sub-frame assembly 100, which is connected to the wheel through a swing arm. The sub-frame assembly 100 includes a sub-frame 10 and a swing arm mounting structure 30. One end of the swing arm is connected to the sub-frame 10. The swing arm mounting structure 30 is connected to the sub-frame 10 by welding, and the swing arm mounting structure 30 has an installation space 35; the other end of the swing arm is located in the installation space 35 and is detachably connected to the swing arm mounting structure 30.

[0035] The sub-frame assembly 100 provided in the present invention is arranged at the chassis of the automobile and is used to connect the vehicle body and the wheels.

[0036] The subframe 10 can be regarded as the frame of the automobile suspension system, and its function is to provide a stable installation foundation for other suspension components to ensure the stability and comfort of the automobile during driving; the swing arm is used to connect the subframe 10 and the wheel. Generally speaking, the swing arm is arranged in a triangular shape, and one end with a ball head is connected to the wheel hub bracket of the wheel, so as to transmit the vibration and impact of the wheel to the subframe 10, which plays a role in shock absorption and buffering; the remaining two ends are connected to the subframe 10 to maintain the stability of the swing arm during driving of the automobile; but if the swing arm is directly welded to the subframe 10, the sheet metal of the subframe 10 will be required to surround the bushing of the swing arm as a whole, because the rigidity and strength required at this installation point are relatively large, so the sheet metal at the installation point is thicker than the main body of the subframe 10, which will increase the weight of the subframe 10 assembly and the cost; at the same time, because the swing arm is directly welded to the subframe 10, it is difficult to adjust the position of the installation point, the production efficiency is low and the qualified rate is low, which makes the production efficiency low and the cost increased.

[0037] In the present embodiment, a swing arm mounting structure 30 is provided, and the swing arm mounting structure 30 is welded to the sub-frame 10, so that the connection between the swing arm and the sub-frame 10 is stable. The mounting space 35 is used to provide a reliable mounting position 15 for the swing arm. It can be seen from the above that the swing arm mounting structure 30 enables a stable connection between the swing arm and the sub-frame 10; the swing arm mounting structure 30 and the swing arm are screwed together through a bushing or other flexible parts, thereby allowing the swing arm to move within a certain range to adapt to different driving conditions and road conditions. The other end of the swing arm is connected to the sub-frame 10 by bolts and nuts, thereby maintaining its overall stability.

[0038] The first direction, the second direction and the third direction mentioned in the present invention refer to the height direction, the length direction and the width direction of the subframe 10 respectively. For the convenience of description below, the swing arm mounting structure 30 is abbreviated as the mounting structure, and when the first mounting member 31 and the second mounting member 33 are mentioned at the same time, the two mounting members are used instead.

[0039] The subframe 10 of the utility model is a structure of upper and lower sheet metal stamping parts, and the thickness of the upper and lower sheet metal parts of the subframe 10 is defined as t1mm, which satisfies the relationship 1.8mm≤t1≤2.5mm. When the thickness of the upper and lower sheet metal parts of the subframe 10 is within this range, the overall structure of the subframe 10 can meet the requirements of the vehicle body in different working conditions without increasing the weight of the vehicle assembly, so that the subframe 10 and the vehicle body maintain a stable connection. The thickness of the upper and lower sheet metal parts of the subframe 10 can be 1.8mm, 1.9mm, 2mm, 2.1mm, 2.2mm, 2.3mm, 2.5mm, and of course, it can also be any value within this thickness range, which is not limited here.

[0040] Reference Figures 1 to 4 In one embodiment of the utility model, the swing arm mounting structure 30 includes a first mounting member 31 and a second mounting member 33 connected to each other, and a mounting space 35 is formed between the first mounting member 31 and the second mounting member 33; the subframe 10 has an upper surface and a lower surface arranged opposite to each other along a first direction; the first mounting member 31 is welded to the upper surface, and the second mounting member 33 is welded to the lower surface.

[0041] In this embodiment, the mounting structure is composed of two connected mounting parts. The connection between the two mounting parts can be welding or integrally formed, or can be a connection method that can withstand high strength and rigidity, which is not limited here.

[0042] An installation space 35 for accommodating the swing arm is formed between the two installation parts, so that the swing arm can be stably installed and can move within a certain range; the subframe 10 has an upper surface and a lower surface that are relatively arranged along the first direction, the first installation part 31 is welded on the upper surface of the subframe 10, and the second installation part 33 is welded on the lower surface; such a connection method further enhances the stability between the installation structure and the subframe 10; by welding, the first installation part 31 and the second installation part 33 are tightly connected to the subframe 10, ensuring the overall reliability and stability of the subframe assembly 100.

[0043] At the same time, the subframe 10 serves as the main supporting structure and connects the vehicle body and the wheels. By respectively welding the first mounting member 31 and the second mounting member 33 to the upper surface and the lower surface of the subframe 10, the rigidity and stability of the suspension system are further improved, thereby improving the driving comfort and stability of the vehicle.

[0044] The mounting point between the swing arm and the mounting structure is independent of the subframe 10, so that the thickness of the two mounting parts can be adjusted easily. Meanwhile, the position and size of the mounting point between the swing arm and the mounting structure can also be adjusted. Changes in the subframe 10 itself will not affect the shapes of the two mounting parts, thereby improving production efficiency.

[0045] The first mounting part 31 and the second mounting part 33 can be regarded as a stamping part structure of upper and lower split parts. The thickness of the first mounting part 31 and the second mounting part 33 are both defined as t2mm, satisfying the relationship of 2.5mm≤t2≤3.5mm. When the thickness of the first mounting part 31 and the second mounting part 33 are both within this thickness range, the two mounting parts can maintain a stable welding relationship with the subframe 10 without increasing the weight of the subframe assembly 100. The thickness of the first mounting part 31 and the second mounting part 33 can be 2.5mm, 2.6mm, 2.8mm, 3mm, 3.2mm, 3.3mm, 3.5mm, and of course, it can also be any value within this thickness range, which is not limited here.

[0046] Reference Figures 1 to 4 In one embodiment of the utility model, the first mounting member 31 includes a first connecting portion 311 and a second connecting portion 313, the first connecting portion 311 is welded to the upper surface; the second connecting portion 313 is connected to the first connecting portion 311, and the second connecting portion 313 is connected to the second mounting member 33 and the sub-frame 10.

[0047] In this embodiment, the connection between the first connection portion 311 and the second connection portion 313 may be welded or integrally formed, or may be a connection method that can withstand high strength and rigidity, which is not limited here.

[0048] The first connection portion 311 is welded to the upper surface of the sub-frame 10, thereby enhancing the stability of the sub-frame 10 and the mounting structure, and the second connection portion 313 is connected to the first connection portion 311 and the second mounting member 33, playing the role of connecting the first connection portion 311 and the second mounting member 33, thereby maintaining the overall stability of the mounting structure and ensuring that the swing arm can move in a stable environment.

[0049] The second connection portion 313 is also connected to the sub-frame 10, and the connection method can be welding, or other connection relationships that can withstand high strength and rigidity, which are not limited here; thus, the second connection portion 313 can tightly connect the sub-frame 10, the first connection portion 311, the second mounting member 33 and the swing arm together, thereby optimizing the performance of the vehicle suspension system and ensuring that the vehicle can maintain good stability and comfort during driving.

[0050] The installation structure adopts a modular design, which makes the connection between various components more convenient and quick, thereby improving production efficiency; it also facilitates later repairs and maintenance, reducing repair costs.

[0051] Reference Figures 1 to 4 In one embodiment of the present invention, the second connection portion 313 is bent and connected to the first connection portion 311 , and is extended along the first direction.

[0052] In this embodiment, the second connection portion 313 is bent at the first connection portion 311 and extended along the height direction, further strengthening the connection relationship between the first connection portion 311 and the second mounting member 33; at the same time, through the extended setting, the second connection portion 313 can better adapt to the relative position change between the first mounting member 31 and the second mounting member 33, ensuring the stability and reliability of the installation structure.

[0053] At the same time, the bending setting of the second connection part 313 can also have a buffering effect. When subjected to external load, the second connection part 313 can absorb part of the impact and vibration through the bending part, thereby reducing the impact on the entire installation structure and improving the durability and stability of the installation structure.

[0054] Reference Figures 1 to 4 In one embodiment of the present invention, the second connection portion 313 is provided with a through hole 315 , and the second connection portion 313 is welded to the sub-frame 10 through the through hole 315 .

[0055] In this embodiment, the second connection portion 313 is provided with a through hole 315 , and the second connection portion 313 is welded to the sub-frame 10 through the through hole 315 .

[0056] Carbon dioxide gas shielded welding can be used between the second connection part 313 and the sub-frame 10. This welding method has low cost, high productivity, fast welding speed, and small welding deformation. Compared with point-to-point welding, welding with the sub-frame 10 through the through hole 315 can increase the welding area to improve the connection stability between the second connection part 313 and the sub-frame 10, and also improve production efficiency; the through hole 315 is preferably set as a waist-shaped hole, because the waist-shaped hole can make the welding between the second connection part 313 and the sub-frame 10 more accurate and stable compared to holes of other shapes, so as to maintain the connection stability between the mounting structure and the sub-frame 10.

[0057] Of course, in other embodiments of the present invention, the through hole 315 may also be configured as a hole of other shapes, which is not limited here.

[0058] Reference Figures 1 to 4 In one embodiment of the utility model, the swing arm also includes a bushing and a bolt, and the bushing is located in the installation space 35; the first connecting portion 311 and the second mounting member 33 are both provided with mounting holes 37, and a bolt passes through the mounting hole 37 of the first connecting portion 311 and the mounting hole 37 of the second mounting member 33 in sequence and is screwed to the bushing.

[0059] In this embodiment, the bushing is arranged on the swing arm and is located in the installation space 35. Since the material of the bushing can be rubber, silicone, etc., which are all flexible materials, the threaded connection between the bolt and the bushing can allow the swing arm to have a certain movable space. The bushing can move with the swing arm during the movement of the swing arm, thereby reducing the transmission force of the swing arm, alleviating the impact on the subframe 10, and thus extending the service life of the swing arm and the subframe 10.

[0060] The first connection portion 311 and the second mounting member 33 are both provided with mounting holes 37, which are for the convenience of installing and fixing the bolts. A bolt passes through the mounting hole 37 of the first connection portion 311 and the mounting hole 37 of the second mounting member 33 in sequence, and is screwed with the bushing. At the same time, the swing arm also includes nuts, which are screwed on both ends of the bolt along the first direction, and are respectively located at the first connection portion 311 and the second mounting member 33; through the cooperation of the bolts and nuts, the connection between the bushing and the first connection portion 311 and the second mounting member 33 is further strengthened, thereby ensuring the overall stability and reliability of the sub-frame assembly 100.

[0061] Reference Figures 1 to 4In one embodiment of the utility model, the subframe 10 includes a crossbeam body 11 and two longitudinal beam bodies 13. The two longitudinal beam bodies 13 are respectively connected to the two ends of the crossbeam body 11 along the second direction, and a mounting position 15 is formed at the connection between each longitudinal beam body 13 and the crossbeam body 11; the first mounting member 31 and the second mounting member 33 are both located at the mounting position 15 and are both welded to the crossbeam body 11 and the longitudinal beam body 13.

[0062] In this embodiment, the cross beam body 11 and the longitudinal beam body 13 together constitute the sub-frame 10, and the two longitudinal beam bodies 13 are respectively connected to the two ends of the cross beam body 11 along the second direction, so that the sub-frame 10 has better rigidity and stability, so as to better support and fix other components; the longitudinal beam body 13 and the cross beam body 11 can be welded or integrally formed, which is not limited here.

[0063] A mounting position 15 is formed at the connection between each longitudinal beam body 13 and the cross beam body 11. The mounting position 15 is used to provide a mounting position 15 for the mounting structure. The first mounting member 31 and the second mounting member 33 are respectively welded to the cross beam body 11 and the longitudinal beam body 13, further enhancing the connection stability and reliability between the mounting structure and the subframe 10.

[0064] Reference Figures 1 to 4 In one embodiment of the present invention, the second connection portion 313 has a first welding surface 317 and a second welding surface 319 that are adjacently arranged. The first welding surface 317 is welded to the beam body 11 , and the second welding surface 319 is welded to the second mounting member 33 .

[0065] In this embodiment, the first welding surface 317 is used for welding to the cross beam body 11, and the second welding surface 319 is used for welding to the second mounting member 33, so that the second connecting portion 313 is welded to the first connecting portion 311, the second mounting member 33 and the subframe 10, so that the connection between the mounting structure and the cross beam body 11 is more stable, and its stability can be maintained even after the swing arm is installed.

[0066] At the same time, the second connection part 313 can be arranged on a side of the first connection part 311 away from the longitudinal beam body 13, and the length of the second connection part 313 in the second direction is smaller than the length of the first connection part 311 in the second direction, that is, the second connection part 313 is not completely connected to the first connection part 311 in the second direction. In this way, while ensuring the stable connection between the swing arm and the mounting structure, the weight of the entire mounting structure can be reduced, thereby reducing the weight of the vehicle assembly and reducing production costs.

[0067] Reference Figures 1 to 4 In one embodiment of the present invention, the sub-frame assembly 100 further includes a mounting arm structure 17 , which is disposed on the longitudinal beam body 13 and extends along the first direction.

[0068] In this embodiment, the mounting arm structure 17 is used to connect the subframe 10 to the vehicle body.

[0069] The mounting arm structure 17 includes a left mounting arm 171, a right mounting arm 173 and a mounting tower 175. The mounting tower 175 is arranged on the longitudinal beam body 13 by welding or other fastening methods. The two mounting towers 175 are bent and arranged on the two longitudinal beam bodies 13 respectively. The left mounting arm 171 and the right mounting arm 173 are respectively arranged at one end of the mounting tower 175 away from the longitudinal beam body 13, and a mounting sleeve 177 is arranged on a side of the left mounting arm 171 and the right mounting arm 173 away from the sub-frame 10. The mounting sleeve 177 has an enlarged flange surface with the mounting surface of the vehicle body, and the end surface of the mounting sleeve 177 adopts a hobbing structure; thereby, the mounting arm structure 17 can maintain sufficient rigidity and strength when subjected to external loads, and can also transmit force to the longitudinal beam body 13, thereby ensuring the stability of the entire sub-frame assembly 100.

[0070] The left mounting arm 171 is defined as having a diameter of D1 mm and a thickness of t3 mm, which satisfies the relationship of 50 mm ≤ D1 ≤ 70 mm, 3 mm ≤ t3 ≤ 4 mm; the right mounting arm 173 is defined as having a diameter of D2 mm and a thickness of t4 mm, which satisfies the relationship of 50 mm ≤ D2 ≤ 70 mm, 3 mm ≤ t4 ≤ 4 mm. When the diameter and thickness of the left mounting arm 171 and the diameter and thickness of the right mounting arm 173 are within the set range, the strength and rigidity of the mounting arm structure 17 can meet the installation requirements between the sub-frame 10 and the vehicle body, and at the same time, its weight will not be too heavy to affect the assembly weight of the sub-frame assembly 100. The left mounting arm 171 preferably has a diameter of 50 mm and a thickness of 3.5 mm, and the right mounting arm 173 preferably has a diameter of 60 mm and a thickness of 3 mm. Of course, the diameter and thickness of the left mounting arm 171 and the diameter and thickness of the right mounting arm 173 can also be set to any value within the range, which is not limited here.

[0071] The sub-frame 10 of the present invention is further provided with a suspension mounting point 50 , and the sub-frame 10 is bolted to the vehicle body via the suspension mounting point 50 .

[0072] The utility model also proposes an automobile. The technical solution of the utility model also proposes an automobile, which includes any one of the above-mentioned sub-frame components 100. The specific structure of the sub-frame component 100 refers to the above-mentioned embodiment. Since the sub-frame component 100 of this solution 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.

[0073] The automobile includes a body, a swing arm, a subframe assembly 100 and a wheel. The subframe 10 is arranged at the bottom of the body and is bolted to the body. One end of the swing arm is detachably connected to the swing arm mounting structure 30 of the subframe assembly 100, and one end of the swing arm of the subframe assembly 100 is connected to the wheel hub bracket.

[0074] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application is described in detail with reference to the above embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the above embodiments can still be modified, or some or all of the technical features can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A subframe assembly connected to a wheel via a swing arm, characterized in that: The subframe assembly comprises: a subframe to which one end of the swing arm is connected; and A swing arm mounting structure, wherein the swing arm mounting structure is connected to the subframe by welding, and the swing arm mounting structure has an installation space; the other end of the swing arm is located in the installation space and is detachably connected to the swing arm mounting structure.

2. The subframe assembly according to claim 1, characterized in that: The swing arm mounting structure comprises a first mounting member and a second mounting member connected to each other, wherein the mounting space is formed between the first mounting member and the second mounting member; the sub-frame comprises an upper surface and a lower surface which are arranged opposite to each other along a first direction; The first mounting member is welded to the upper surface, and the second mounting member is welded to the lower surface.

3. The subframe assembly according to claim 2, characterized in that: The first mounting member comprises: a first connection portion welded to the upper surface; and The second connection portion is connected to the first connection portion, and the second connection portion is connected to the second mounting member and the sub-frame.

4. The subframe assembly according to claim 3, characterized in that: The second connection portion is bent and connected to the first connection portion, and is extended along a first direction.

5. The subframe assembly according to claim 3, characterized in that: The second connecting portion is provided with a through hole, and the second connecting portion is welded to the sub-frame through the through hole.

6. The subframe assembly according to claim 3, characterized in that: The subframe includes a crossbeam body and two longitudinal beam bodies, the two longitudinal beam bodies are respectively connected to two ends of the crossbeam body along the second direction, and the connection between each longitudinal beam body and the crossbeam body forms a mounting position; The first mounting member and the second mounting member are both located at the mounting position and are both welded to the cross beam body and the longitudinal beam body.

7. The subframe assembly according to claim 6, characterized in that: The second connection portion has a first welding surface and a second welding surface that are adjacent to each other, the first welding surface is welded to the beam body, and the second welding surface is welded to the second mounting piece.

8. The subframe assembly according to claim 7, wherein: The sub-frame assembly further includes a mounting arm structure, which is disposed on the longitudinal beam body and extends along a first direction.

9. A car, characterized in that: The automobile comprises: Car body; Swing arm; The subframe assembly according to any one of claims 1 to 8, wherein the subframe is disposed at the bottom of the vehicle body and is bolted to the vehicle body; and The wheel, one end of the swing arm is detachably connected to the swing arm mounting structure of the sub-frame assembly, and one end of the swing arm is connected to the wheel hub bracket of the wheel.

10. The automobile according to claim 9, characterized in that The swing arm further comprises a bushing and a bolt, wherein the bushing is located in the installation space; The swing arm mounting structure is provided with a first mounting member and a second mounting member connected to each other, and mounting holes are provided on the first mounting member and the second mounting member. A bolt passes through the mounting hole of the first mounting member and the mounting hole of the second mounting member in sequence and is screwed to the bushing.

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