Auxiliary frame structure and automobile

Abstract

The utility model discloses an auxiliary frame structure and an automobile, the auxiliary frame structure is connected with a wheel through a swing arm, the swing arm is provided with a first mounting part and a second mounting part which are arranged at an interval along a first direction, and the second mounting part is detachably connected with an auxiliary frame; the swing arm installation support is of an integrally-formed structure, one side of the swing arm installation support is connected to the auxiliary frame in a welded mode, an installation space is formed in the side, away from the auxiliary frame, of the swing arm installation support, and the first installation part is located in the installation space and detachably connected with the swing arm installation support. The swing arm installation support of the integrally-formed structure is arranged, the swing arm installation support is welded to the auxiliary frame, so that the swing arm installation support is stably connected with the auxiliary frame, the swing arm installation support is detachably connected with the first installation part, and the second installation part of the swing arm is detachably connected with the auxiliary frame; therefore, the swing arm is allowed to move within a certain range so as to adapt to different driving conditions and road conditions.

Description

[Technical field]

[0001] The utility model relates to the technical field of automobiles, in particular to a subframe structure 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 front point bracket of the swing arm is set as a cantilever structure, and its deformation after welding and heat is difficult to control. The rear mounting point of the swing arm is an integral stamping type of the upper and lower pieces of the subframe. Such a setting will increase the weight of the vehicle assembly and is not convenient for adjusting the position of the rear mounting point of the swing arm. It is not suitable for many models. [Utility Model Content]

[0004] The main purpose of the utility model is to provide a sub-frame structure, which aims to provide a swing arm mounting bracket with an integrally formed structure, and the swing arm mounting bracket is welded to the sub-frame, so that the connection between the swing arm mounting bracket and the sub-frame is stable, and the swing arm mounting bracket and the first mounting portion are provided with a detachable connection, and the second mounting portion of the swing arm and the sub-frame are also provided with a detachable connection, thereby allowing the swing arm to move within a certain range to adapt to different driving conditions and road conditions.

[0005] To achieve the above object, the utility model provides a sub-frame structure, which is connected to the wheel through a swing arm, wherein the swing arm has a first mounting portion and a second mounting portion spaced apart along a first direction, and the sub-frame structure comprises:

[0006] a subframe, the second mounting portion being detachably connected to the subframe; and

[0007] The swing arm mounting bracket is an integrally formed structure, and one side of the swing arm mounting bracket is connected to the subframe by welding, a mounting space is formed on the side of the swing arm mounting bracket away from the subframe, and the first mounting portion is located in the mounting space and is detachably connected to the swing arm mounting bracket.

[0008] In one embodiment of the utility model, the swing arm mounting bracket includes a first connecting portion, a supporting portion and a second connecting portion, the first connecting portion and the second connecting portion are connected to opposite ends of the supporting portion along a second direction and enclose the mounting space with the supporting portion; the supporting portion is connected to the subframe.

[0009] In one embodiment of the present utility model, the support portion includes a first welding portion and a second welding portion connected to each other, the first welding portion is extended along a first direction, and the second welding portion is extended along a third direction;

[0010] The first welding portion and the second welding portion are both arranged in a curved surface shape.

[0011] In one embodiment of the utility model, a first through hole is provided on the first welding portion, and the first welding portion is welded to the sub-frame through the first through hole;

[0012] And / or, a second through hole is provided on the second welding portion, and the second welding portion is welded to the sub-frame through the second through hole.

[0013] 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 crossbeam body along the third direction, and a mounting groove is formed between each longitudinal beam body and the crossbeam body;

[0014] The support parts are located in the installation grooves and are respectively welded to the inner walls of the installation grooves.

[0015] In an embodiment of the present invention, the connection between the beam body and the support portion is arranged in a wave shape.

[0016] In an embodiment of the present utility model, the subframe structure further includes a mounting seat and a mounting arm structure, the mounting seat is arranged on the longitudinal beam body, and the mounting arm structure is arranged on the mounting seat and extends along the second direction.

[0017] The utility model also proposes an automobile, which includes a body, a swing arm, a subframe structure and wheels. The subframe is arranged at the bottom of the body and is bolted to the body. One end of the swing arm of the subframe structure is movably connected to a swing arm mounting bracket of the subframe structure, and one end of the swing arm of the subframe structure is connected to a wheel hub bracket.

[0018] In one embodiment of the utility model, the first mounting portion includes a first bushing and a first bolt, the second mounting portion includes a second bushing and a second bolt, and the swing arm mounting bracket is provided with a first mounting hole and a second mounting hole;

[0019] The swing arm mounting bracket is respectively provided with a first mounting hole and a second mounting hole along the second direction, the first bushing is located in the mounting space, and the first bolt passes through the first mounting hole and the second mounting hole in sequence and is screwed to the first bushing;

[0020] The sub-frame structure also includes a limiting member and a mounting seat, wherein the limiting member and the mounting seat are arranged on the sub-frame at intervals along a first direction, and a limiting space is formed between the limiting member and the mounting seat; the second bushing is located in the limiting space; the second bolt passes through the limiting member and the second bushing in sequence, and is screwed to the mounting seat.

[0021] 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, which provides 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, thereby playing a role of 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; a swing arm mounting bracket of an integrally formed structure is provided, and the swing arm mounting bracket 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 bracket enables a stable connection between the swing arm and the subframe; the first mounting portion and the second mounting portion are both connected to the swing arm mounting bracket through a flexible member, thereby allowing the swing arm to move within a certain range to adapt to different driving conditions and road conditions.

Brief Description of the Drawings

[0022] 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.

[0023] Figure 1 A schematic diagram of the overall structure of the subframe structure provided in an embodiment of the present application;

[0024] Figure 2 A schematic diagram of a partial structure of a subframe structure provided in an embodiment of the present application;

[0025] Figure 3 A schematic diagram of a partial structure of a subframe structure from another perspective provided in an embodiment of the present application;

[0026] Figure 4 A schematic diagram of the overall structure of the swing arm mounting bracket provided in an embodiment of the present application;

[0027] Figure 5 A schematic diagram of the overall structure of the swing arm mounting bracket at another angle provided in an embodiment of the present application.

[0028] Description of Figure Numbers:

[0029] Label name Label name 100 Subframe structure 10 Subframe 11 Beam body 13 Longitudinal beam body 15 Mounting slot 17 Mounting Block 18 Limiting parts 19 Mounting arm structure 30 Swing arm mounting bracket 31 First connection part 311 First mounting hole 313 Second mounting hole 33 Second connection part 35 Support 351 First welding section 353 Second welding section 355 First through hole 357 Second through hole 191 Left mounting arm 193 Right mounting arm 195 Install the tower 197 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 5 The utility model proposes a sub-frame structure 100, which includes a sub-frame 10, a swing arm mounting bracket 30 and a swing arm. The swing arm mounting bracket 30 is an integrated structure, and one side of the swing arm mounting bracket 30 is connected to the sub-frame 10 by welding. A mounting space is formed on the side of the swing arm mounting bracket 30 away from the sub-frame 10; the swing arm has a first mounting portion and a second mounting portion spaced apart along a first direction, the first mounting portion is located in the mounting space, and is movably connected to the swing arm mounting bracket 30; the second mounting portion is movably connected to the sub-frame 10.

[0035] The subframe structure 100 proposed in the present invention is arranged at the chassis of the automobile and is used to connect the vehicle body and wheels.

[0036] The subframe 10 can be regarded as the framework of the automobile suspension system, which provides 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 of the wheel 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, resulting in low production efficiency and increased costs.

[0037] In the present embodiment, a swing arm mounting bracket 30 of an integrally formed structure is provided. The swing arm mounting bracket 30 is welded to the sub-frame 10, so that the connection between the swing arm mounting bracket 30 and the sub-frame 10 is stable, and the mounting space is used to provide a reliable mounting position for the swing arm. It can be seen from the above that the swing arm mounting bracket 30 enables a stable connection between the swing arm and the sub-frame 10; a detachable connection is provided between the swing arm mounting bracket 30 and the first mounting portion, and a detachable connection is also provided between the second mounting portion of the swing arm and the sub-frame 10, that is, the first mounting portion and the second mounting portion are both connected to the swing arm mounting bracket through a flexible member, thereby allowing the swing arm to move within a certain range to adapt to different driving conditions and road conditions.

[0038] The first direction, the second direction and the third direction mentioned in the present invention refer to the width direction, the height direction and the length direction of the subframe 10 respectively. For the convenience of description below, the swing arm mounting bracket 30 is abbreviated as the mounting bracket. When the first connecting portion 31 and the second connecting portion 33 are mentioned at the same time, the two connecting portions are used instead, and when the first welding portion 351 and the second welding portion 353 are mentioned, the two welding portions 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 5 In one embodiment of the utility model, the swing arm mounting bracket 30 includes a first connecting portion 31, a supporting portion 35 and a second connecting portion 33. The first connecting portion 31 and the second connecting portion 33 are connected to opposite ends of the supporting portion 35 along the second direction and form an installation space with the supporting portion 35; the supporting portion 35 is connected to the sub-frame 10.

[0041] In this embodiment, the mounting bracket includes a first connecting portion 31, a supporting portion 35 and a second connecting portion 33. The first connecting portion 31 and the second connecting portion 33 are connected to opposite ends of the supporting portion 35 along the second direction, which enables the first connecting portion 31 and the second connecting portion 33 to form a stable integral structure with the supporting portion 35, thereby enhancing the structural strength and stability of the mounting bracket.

[0042] The installation space is used to accommodate the swing arm so that the swing arm can move freely in this space. At the same time, the first connecting portion 31, the supporting portion 35 and the second connecting portion 33 play a limiting role thereon to maintain a stable installation position of the swing arm.

[0043] The support portion 35 and the sub-frame 10 may be connected by welding, screwing or any other connection method that can withstand high strength and rigidity, which is not limited here. The above connection method can ensure the stability between the mounting bracket and the sub-frame 10. Through the connection of the support portion 35, the mounting bracket can tightly connect the sub-frame 10 and the swing arm together to form a complete suspension system.

[0044] The first connection part 31, the support part 35 and the second connection part 33 can be regarded as an integrally formed stamping structure, and the thickness of the first connection part 31, the support part 35 and the second connection part 33 are defined as t2mm, satisfying the relationship 2mm≤t2≤3mm. When the first connection part 31, the support part 35 and the second connection part 33 are all within this thickness range, the mounting bracket can maintain a stable welding relationship with the subframe 10 without increasing the weight of the subframe structure 100. The thickness of the first connection part 31, the support part 35 and the second connection part 33 can be 2mm, 2.1mm, 2.2mm, 2.5mm, 2.8mm, 2.9mm, 3mm, and of course, it can also be any value within this thickness range, which is not limited here.

[0045] Reference Figures 1 to 5 In one embodiment of the utility model, the support portion 35 includes a first welding portion 351 and a second welding portion 353 connected to each other, the first welding portion 351 extends along a first direction, and the second welding portion 353 extends along a third direction; the first welding portion 351 and the second welding portion 353 are both arranged in a curved shape.

[0046] In this embodiment, the support portion 35 includes a first welding portion 351 and a second welding portion 353 connected to each other. This connection method further enhances the structural strength and stability of the support portion 35 .

[0047] The first welding portion 351 is extended along the first direction, and the second welding portion 353 is extended along the third direction. The two welding portions are respectively extended according to the setting directions of the cross beam body 11 and the longitudinal beam body 13, so that the first welding portion 351 is welded to the longitudinal beam body 13, and the second welding portion 353 is welded to the cross beam body 11, so as to increase the welding area with the sub-frame 10 and maintain the connection stability between the mounting bracket and the sub-frame 10.

[0048] The first welding part 351 and the second welding part 353 are both arranged in a curved surface. This curved surface design not only improves the structural strength and stability of the support part 35, but also has a certain buffering effect; when bearing external loads, the curved surface welding part can better absorb and disperse the impact and vibration, thereby reducing the impact on the entire mounting bracket and improving the durability and stability of the structure.

[0049] At the same time, the connection with the sub-frame 10 through the curved welding portion can better adapt to the shape and size of the sub-frame 10 , thereby ensuring the stability and reliability of the entire sub-frame structure 100 .

[0050] Reference Figures 1 to 5 In one embodiment of the present invention, a first through hole 355 is provided on the first welding portion 351 , and the first welding portion 351 is welded to the sub-frame 10 through the first through hole 355 .

[0051] In this embodiment, a first through hole 355 is provided on the first welding portion 351 , and the first welding portion 351 is welded to the sub-frame 10 through the first through hole 355 to maintain the connection stability between the mounting bracket and the sub-frame 10 .

[0052] Carbon dioxide gas shielded welding can be used between the first welding portion 351 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 first through hole 355 can increase the welding area to improve the connection stability between the first welding portion 351 and the sub-frame 10, and also improve production efficiency; the first through hole 355 is preferably set as a waist-shaped hole, because the waist-shaped hole can make the welding between the first welding portion 351 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 bracket and the sub-frame 10.

[0053] In other embodiments of the utility model, a second through hole 357 is provided on the second welding portion 353, and the second welding portion 353 is welded to the sub-frame 10 through the second through hole 357. The specific connection method and effect of the second welding portion 353 and the sub-frame 10 can refer to the connection method and effect produced between the first welding portion 351 and the sub-frame 10, and will not be repeated here.

[0054] Of course, in other embodiments of the present invention, both the first through hole 355 and the second through hole 357 can be set to holes of other shapes, which are not limited here.

[0055] Reference Figures 1 to 5 In one embodiment of the utility model, the first connecting portion 31 is provided with a first mounting hole 311, the second connecting portion 33 is provided with a second mounting hole 313, the first mounting portion of the swing arm also includes a first bushing and a first bolt, the first bushing is provided on the swing arm; a first bolt passes through the first mounting hole 311 and the second mounting hole 313 in sequence and is screwed to the first bushing.

[0056] In this embodiment, the first bushing is arranged on the swing arm and is located in the installation space. Since the material of the first bushing can be rubber, silicone, etc., which are all flexible materials, the threaded connection between the first bolt and the first bushing can allow the swing arm to have a certain movable space. The first 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 extending the service life of the swing arm and the subframe 10.

[0057] The first connection part 31 is provided with a first mounting hole 311, and the second connection part 33 is provided with a second mounting hole 313, which is to facilitate the installation and fixation of the first bolt. A first bolt passes through the first mounting hole 311 and the second mounting hole 313 in sequence and is screwed with the first bushing. At the same time, the sub-frame structure 100 also includes nuts, which are screwed on both ends of the first bolt along the second direction, and are respectively located at the first connection part 31 and the second connection part 33; through the cooperation of the bolt and the nut, the connection between the first bushing and the first connection part 31 and the second connection part 33 is further strengthened, thereby ensuring the overall stability and reliability of the sub-frame structure 100.

[0058] Reference Figures 1 to 3 In one embodiment of the present invention, the subframe 10 includes a cross beam body 11 and two longitudinal beam bodies 13. The two longitudinal beam bodies 13 are respectively connected to the cross beam body 11 along the third direction. A mounting groove 15 is formed between each longitudinal beam body 13 and the cross beam body 11. The support portion 35 is located in the mounting groove 15 and is respectively welded to the inner wall of the mounting groove 15.

[0059] 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.

[0060] A mounting groove 15 is formed at the connection between each longitudinal beam body 13 and the cross beam body 11. The mounting groove 15 is used to provide a mounting position for the mounting bracket. The support portion 35 is located in the mounting groove 15, and the first welding portion 351 and the second welding portion 353 are both welded to the inner wall of the mounting groove 15, further enhancing the connection stability and reliability between the mounting bracket and the subframe 10.

[0061] Reference Figures 1 to 3 In one embodiment of the present invention, the connection between the beam body 11 and the support portion 35 is arranged in a wave shape.

[0062] In this embodiment, the connection between the cross beam body 11 and the support portion 35 is arranged in a wave shape, which can reduce welding stress, improve welding stability and efficiency, and thus improve the strength and stability of the entire mounting bracket.

[0063] At the same time, the wavy connection can absorb some impact and vibration through its curved shape, thereby reducing the impact on the entire sub-frame structure 100.

[0064] Reference Figures 1 to 3 In one embodiment of the present invention, the subframe structure 100 further includes a mounting seat 17 and a mounting arm structure 19. The mounting seat 17 is disposed on the longitudinal beam body 13, and the mounting arm structure 19 is disposed on the mounting seat 17 and extends along the second direction.

[0065] In this embodiment, the mounting seat 17 is used to provide a mounting position for the mounting arm structure 19 , and the mounting arm structure 19 is used to connect the vehicle body and the subframe 10 .

[0066] The mounting seat 17 and the longitudinal beam body 13 can be connected by welding or integrally formed. The mounting arm structure 19 is mounted on the mounting seat 17 by welding or other fastening methods. The three form a stable whole to ensure the stability of the automobile suspension system and to enable the mounting arm structure 19 to maintain sufficient rigidity and strength when subjected to external loads. At the same time, the mounting arm structure 19 can also transmit force to the mounting seat 17 (i.e., the longitudinal beam body 13) to ensure the stability of the entire subframe structure 100.

[0067] The mounting arm structure 19 includes a left mounting arm 191, a right mounting arm 193 and a mounting tower 195. The mounting tower 195 is arranged on the longitudinal beam body 13 by welding or other fastening methods. The two mounting towers 195 are bent and arranged on the two longitudinal beam bodies 13 respectively. The left mounting arm 191 and the right mounting arm 193 are respectively arranged at one end of the mounting tower 195 away from the longitudinal beam body 13, and a mounting sleeve 197 is arranged on the side of the left mounting arm 191 and the right mounting arm 193 away from the sub-frame 10. The mounting sleeve 197 has an enlarged flange surface with the mounting surface of the vehicle body, and the end surface of the mounting sleeve 197 adopts a hobbing structure; thereby, the mounting arm structure 19 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 structure 100.

[0068] The diameter of the left mounting arm 191 is defined as D1mm, and the thickness is t3mm, which satisfies the relationship of 50mm≤D1≤70mm, 3mm≤t3≤4mm; the diameter of the right mounting arm 193 is defined as D2mm, and the thickness is t4mm, which satisfies the relationship of 50mm≤D2≤70mm, 3mm≤t4≤4mm. When the diameter and thickness of the left mounting arm 191 and the diameter and thickness of the right mounting arm 193 are within the set range, the strength and rigidity of the mounting arm structure 19 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 structure 100. The diameter of the left mounting arm 191 is preferably 50mm, and the thickness is preferably 3.5mm. The diameter of the right mounting arm 193 is preferably 60mm, and the thickness is preferably 3mm. Of course, the diameter and thickness of the left mounting arm 191 and the diameter and thickness of the right mounting arm 193 can also be set to any value within the range, which is not limited here.

[0069] Reference Figures 1 to 3 In one embodiment of the utility model, the subframe structure 100 also includes a limit member 18, which is arranged on the longitudinal beam body 13 and is spaced apart from the mounting seat 17 along the first direction, and a limit space is formed between the limit member 18 and the mounting seat 17; the second mounting portion of the swing arm includes a second bushing and a second bolt, and the second bushing is arranged on a side of the second mounting portion close to the limit member 18 and is located in the limit space; the second bolt passes through the limit member 18 and the second bushing in sequence, and is screwed to the mounting seat 17.

[0070] In this embodiment, the limiting member 18 cooperates with the mounting seat 17 to form a limiting space for the installation of the second bushing, and at the same time limits the movement range of the second mounting portion in the first direction.

[0071] The second bushing is arranged on one side of the second mounting portion close to the stopper 18 and is located in the stopper space. The connection between the second bushing, the stopper 18, the second bolt and the mounting seat 17 can refer to the connection between the first bushing, the first bolt, the first connecting portion 31 and the second connecting portion 33. The beneficial effects produced can also refer to the first bushing, which will not be described in detail here. The two ends of the second bolt are also detachably connected to the stopper 18 and the mounting seat 17 through nuts.

[0072] It should be noted that the material of the second bushing can also be flexible materials such as rubber and silicone, so the second mounting portion can also swing with the swing arm.

[0073] 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 .

[0074] The utility model also proposes an automobile, which includes any one of the above-mentioned subframe structures 100. The specific structure of the subframe structure 100 refers to the above-mentioned embodiments. Since the subframe structure 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.

[0075] The automobile includes a vehicle body, a swing arm, a subframe structure 100 and a wheel. The subframe 10 is arranged at the bottom of the vehicle body and is bolted to the vehicle body. One end of the swing arm of the subframe structure 100 is movably connected to a swing arm mounting bracket 30 of the subframe structure 100, and one end of the swing arm of the subframe structure 100 is connected to a wheel hub bracket.

[0076] 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 structure connected to a wheel via a swing arm, wherein the swing arm has a first mounting portion and a second mounting portion spaced apart in a first direction, characterized in that: The subframe structure comprises: a subframe, the second mounting portion being detachably connected to the subframe; and The swing arm mounting bracket is an integrally formed structure, and one side of the swing arm mounting bracket is connected to the subframe by welding, a mounting space is formed on the side of the swing arm mounting bracket away from the subframe, and the first mounting portion is located in the mounting space and is detachably connected to the swing arm mounting bracket.

2. The subframe structure according to claim 1, characterized in that: The swing arm mounting bracket includes a first connecting portion, a supporting portion and a second connecting portion. The first connecting portion and the second connecting portion are connected to opposite ends of the supporting portion along a second direction and enclose the mounting space with the supporting portion. The supporting portion is connected to the subframe.

3. The subframe structure according to claim 2, characterized in that: The support portion includes a first welding portion and a second welding portion connected to each other, the first welding portion is extended along a first direction, and the second welding portion is extended along a third direction; The first welding portion and the second welding portion are both arranged in a curved surface shape.

4. The subframe structure according to claim 3, characterized in that: A first through hole is provided on the first welding portion, and the first welding portion is welded to the sub-frame through the first through hole; And / or, a second through hole is provided on the second welding portion, and the second welding portion is welded to the sub-frame through the second through hole.

5. The subframe structure according to claim 2, characterized in that: The subframe includes a crossbeam body and two longitudinal beam bodies, the two longitudinal beam bodies are respectively connected to the crossbeam body along the third direction, and a mounting groove is formed between each longitudinal beam body and the crossbeam body; The support parts are located in the installation grooves and are respectively welded to the inner walls of the installation grooves.

6. The subframe structure according to claim 5, characterized in that: The connection between the cross beam body and the support portion is arranged in a wave shape.

7. The subframe structure according to claim 5, characterized in that: The sub-frame structure further comprises a mounting seat and a mounting arm structure, wherein the mounting seat is arranged on the longitudinal beam body, and the mounting arm structure is arranged on the mounting seat and extends along the second direction.

8. The subframe structure according to claim 7, characterized in that: The sub-frame structure further includes a limiting member, which is disposed on the longitudinal beam body and spaced apart from the mounting seat along a first direction, and a limiting space is formed between the limiting member and the mounting seat.

9. A car, characterized in that: The automobile comprises: Car body; Swing arm; The subframe structure 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 movably connected to the swing arm mounting bracket of the sub-frame structure, and one end of the swing arm is connected to the wheel hub bracket.

10. The automobile according to claim 9, characterized in that The first mounting portion includes a first bushing and a first bolt, the second mounting portion includes a second bushing and a second bolt, and the swing arm mounting bracket is provided with a first mounting hole and a second mounting hole; The swing arm mounting bracket is respectively provided with a first mounting hole and a second mounting hole along the second direction, the first bushing is located in the mounting space, and the first bolt passes through the first mounting hole and the second mounting hole in sequence and is screwed to the first bushing; The sub-frame structure also includes a limiting member and a mounting seat, wherein the limiting member and the mounting seat are arranged on the sub-frame at intervals along a first direction, and a limiting space is formed between the limiting member and the mounting seat; the second bushing is located in the limiting space; the second bolt passes through the limiting member and the second bushing in sequence, and is screwed to the mounting seat.

Images