Bushing assembly, subframe structure, and vehicle thereof

Abstract

The utility model relates to a kind of bushing assembly, subframe structure and its vehicle, comprising: first bushing, second bushing and mounting piece, the first bushing is spaced apart with the second bushing, the mounting piece is connected with the first bushing and the second bushing, the mounting piece is used to install the first bushing and the second bushing.The bushing assembly, subframe structure and its vehicle of the present application, not only can improve the NVH performance of whole vehicle, but also facilitate the disassembly replacement of bushing.

Description

Technical Field

[0001] This utility model belongs to the field of automotive bushing technology, specifically relating to a bushing assembly, subframe structure, and vehicle thereof. Background Technology

[0002] Automotive bushings are key components that connect various parts of the suspension, steering, and other systems. Bushings serve to reduce vibration, insulate sound, and cushion.

[0003] Currently, existing single bushings bear a large Z-axis force, making them prone to tearing. To prevent tearing, the static stiffness of the bushing needs to be increased. However, as the static stiffness of the bushing increases, the dynamic stiffness also increases. Higher dynamic stiffness can lead to a decrease in the NVH performance of the entire vehicle, thereby affecting the ride comfort of passengers. Utility Model Content

[0004] The purpose of this utility model is to provide a bushing assembly, a subframe structure and a vehicle thereof, which can not only improve the NVH performance of the whole vehicle, but also facilitate the disassembly and replacement of the bushing.

[0005] The first aspect of this utility model discloses a bushing assembly, including: a first bushing, a second bushing, and a mounting member, wherein the first bushing and the second bushing are spaced apart, and the mounting member is connected to the first bushing and the second bushing, and the mounting member is used to install the first bushing and the second bushing.

[0006] In an exemplary embodiment of the present invention, the mounting member is provided with a first through hole and a second through hole, the first through hole and the second through hole being spaced apart, the first bushing being located in the first through hole and connected to the hole wall of the first through hole, and the second bushing being located in the second through hole and connected to the hole wall of the second through hole.

[0007] In an exemplary embodiment of the present invention, the bushing assembly further includes a cover plate, which is correspondingly disposed with the first bushing and the second bushing, and is connected to the first bushing and the second bushing.

[0008] In an exemplary embodiment of this utility model, both the first bushing and the second bushing include an inner tube, an elastic part, and an outer tube. The inner tube is located inside the outer tube, and the elastic part is connected between the inner tube and the outer tube. The inner tube is provided with a snap-fit ​​hole. The cover plate includes a cover plate body part and a snap-fit ​​part. The cover plate body part is connected to the snap-fit ​​part, and the snap-fit ​​part snaps into the snap-fit ​​hole of the first bushing or the snap-fit ​​hole of the second bushing.

[0009] In an exemplary embodiment of this utility model, the snap-fit ​​hole includes a first hole segment, a middle hole segment, and a second hole segment. The first hole segment and the second hole segment are arranged radially opposite to each other along the middle hole segment, and both the first hole segment and the second hole segment are in communication with the middle hole segment. The snap-fit ​​part includes a first snap-fit ​​segment and a second snap-fit ​​segment. The first snap-fit ​​segment snaps into the first hole segment corresponding to it, and the second snap-fit ​​segment snaps into the second hole segment corresponding to it.

[0010] In an exemplary embodiment of this utility model, the elastic part includes a first protruding section, an intermediate connecting section, and a second protruding section. The intermediate connecting section is connected between the inner tube and the outer tube. The first protruding section and the second protruding section are connected one-to-one along the axial direction of the snap-fit ​​hole to two opposite sides of the intermediate connecting section. Both the first protruding section and the second protruding section protrude relative to the outer tube. The first protruding section is in contact with the cover plate.

[0011] In an exemplary embodiment of the present invention, the elastic portion is provided with a first elastic space and a second elastic space ...

[0012] The second aspect of this utility model discloses a subframe structure, including a subframe body and the bushing assembly, wherein the subframe body is connected to the bushing assembly.

[0013] In an exemplary embodiment of this utility model, the subframe body includes a front crossbeam, a rear crossbeam, a first longitudinal beam, and a second longitudinal beam. The front crossbeam and the rear crossbeam are arranged opposite to each other, and the first longitudinal beam and the second longitudinal beam are arranged opposite to each other. The first longitudinal beam and the second longitudinal beam are both connected between the front crossbeam and the rear crossbeam. The subframe structure includes two bushing assemblies. One bushing assembly is connected to the rear crossbeam and the first longitudinal beam, and the other bushing assembly is connected to the rear crossbeam and the second longitudinal beam.

[0014] The third aspect of this utility model discloses a vehicle, including a body and the subframe structure, wherein the subframe structure is connected to the body.

[0015] The present invention has the following beneficial effects: In this embodiment of the invention, the bushing assembly includes a first bushing and a second bushing. The arrangement of the first and second bushings can reduce the Z-axis force borne by a single bushing, thereby reducing the static and dynamic stiffness of the first and second bushings and improving the NVH performance of the entire vehicle. Furthermore, the first and second bushings are spaced apart to facilitate the disassembly and replacement of individual bushings.

[0016] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit the present invention. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments conforming to the present invention and, together with the description, serve to explain the principles of the present invention. Obviously, the drawings described below are merely some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort. The drawings herein are for illustrating the inventive concept of the present invention and are not entirely equivalent to the structure of the actual product protected by the present invention.

[0018] Figure 1 A three-dimensional structural diagram of the subframe structure in an embodiment of this utility model is shown.

[0019] Figure 2 An embodiment of the present invention is shown. Figure 1 A magnified view of a portion of the subframe structure.

[0020] Figure 3 A rear view of a portion of the subframe structure in an embodiment of this utility model is shown.

[0021] Figure 4 An embodiment of the present invention is shown. Figure 3 A magnified view of a portion of the subframe structure.

[0022] Figure 5 A schematic diagram of the connection structure of the subframe body, first bushing, second bushing, mounting component and cover plate in an embodiment of this utility model is shown.

[0023] Figure 6 A schematic diagram of the connection structure of the subframe body, first bushing, second bushing, mounting component and cover plate in an embodiment of this utility model is shown.

[0024] Explanation of reference numerals in the attached figures: 1. Subframe body; 11. Front crossbeam; 12. Rear crossbeam; 13. First longitudinal beam; 14. Second longitudinal beam; 2. First bushing; 201. Snap-fit ​​hole; 201a. First hole section; 201b. Intermediate hole section; 201c. Second hole section; 202. First elastic space; 203. Second elastic space; 21. Inner tube; 22. Elastic part; 221. First protruding section; 222. Intermediate connecting section; 223. Second protruding section; 23. Outer tube; 3. Second bushing; 4. Mounting component; 5. Cover plate; 501. Mounting hole; 51. Cover plate body part; 52. Snap-fit ​​part; 521. First snap-fit ​​section; 6. Positioning pin; x. Length direction of the first longitudinal beam; y. Length direction of the rear crossbeam; z. Axial direction of the first bushing. Detailed Implementation

[0025] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided to make the present invention more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art.

[0026] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a full understanding of embodiments of the present invention. However, those skilled in the art will recognize that the technical solutions of the present invention can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., may be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of the present invention.

[0027] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0028] Combination Figure 1 and Figure 6 As shown, this embodiment provides a bushing assembly, including: a first bushing 2, a second bushing 3 and a mounting member 4. The first bushing 2 and the second bushing 3 are spaced apart. The mounting member 4 is connected to the first bushing 2 and the second bushing 3 and is used to install the first bushing 2 and the second bushing 3.

[0029] In this embodiment, the bushing assembly includes a first bushing 2 and a second bushing 3. The arrangement of the first bushing 2 and the second bushing 3 can reduce the Z-axis force borne by a single bushing, thereby reducing the static stiffness and dynamic stiffness of the first bushing 2 and the second bushing 3, and improving the NVH performance of the entire vehicle. In addition, the first bushing 2 and the second bushing 3 are spaced apart to facilitate the removal and replacement of individual bushings.

[0030] In this embodiment, the axial direction z of the first bushing 2 is parallel to the axial direction of the second bushing 3. The Z-direction refers to the axial direction z of the first bushing 2 (or the axial direction of the second bushing 3).

[0031] Combination Figure 1 As shown, the mounting component 4 is provided with a first through hole and a second through hole, the first through hole and the second through hole are spaced apart, the first bushing 2 is located in the first through hole and is connected to the hole wall of the first through hole, and the second bushing 3 is located in the second through hole and is connected to the hole wall of the second through hole.

[0032] In this embodiment, the first bushing 2 is installed in the first through hole of the mounting member 4 to achieve the connection between the first bushing 2 and the mounting member 4. The second bushing 3 is installed in the second through hole of the mounting member 4 to achieve the connection between the second bushing and the mounting member 4.

[0033] In this embodiment, the first bushing 2 is interference-fitted with the first through hole, which can firmly fix the first bushing 2 in the first through hole and prevent the first bushing 2 from loosening or rotating during operation. The second bushing 3 is interference-fitted with the second through hole, which can firmly fix the second bushing 3 in the second through hole and prevent the second bushing 3 from loosening or rotating during operation.

[0034] Combination Figure 5 As shown, the bushing assembly also includes a cover plate 5, which is disposed corresponding to the first bushing 2 and the second bushing 3 along the axial direction z of the first bushing 2, and the cover plate 5 is connected to the first bushing 2 and the second bushing 3.

[0035] In this embodiment, the cover plate 5 is provided with two mounting holes 501, which are spaced apart from each other. A bolt passes through one mounting hole 501 and the first bushing 2 in sequence to connect the cover plate 5 to the first bushing 2; another bolt passes through the other mounting hole 501 and the second bushing 3 in sequence to connect the cover plate 5 to the second bushing 3.

[0036] In this embodiment, the cover plate 5 can restrict the movement of the first bushing 2 and the second bushing 3 to prevent the first bushing 2 and the second bushing 3 from deforming and detaching from the mounting part 4 under huge impact, or from tearing.

[0037] Combination Figures 3 to 6As shown, both the first bushing 2 and the second bushing 3 include an inner tube 21, an elastic part 22, and an outer tube 23. The inner tube 21 is located inside the outer tube 23, and the elastic part 22 is connected between the inner tube 21 and the outer tube 23. The inner tube 21 is provided with a snap-fit ​​hole 201. The cover plate 5 includes a cover plate body part 51 and a snap-fit ​​part 52. The cover plate body part 51 is connected to the snap-fit ​​part 52. The snap-fit ​​part 52 snaps into the snap-fit ​​hole 201 of the first bushing 2. Two mounting holes 501 are located in the cover plate body part 51.

[0038] In other embodiments, the snap-fit ​​portion 52 snaps into the snap-fit ​​hole 201 of the second bushing 3.

[0039] In this embodiment, the first bushing 2 and the second bushing 3 are the same in size and shape.

[0040] In this embodiment, the first bushing 2 and the second bushing 3 are installed as follows: First, the cover plate body 51 is connected to the first bushing 2 by snapping the first bushing 2 into the snap-fit ​​hole 201 of the first bushing 2 through the snap-fit ​​part 52; Second, the second bushing 3 is pressed into the second through hole; Third, one end of the positioning pin 6 is inserted into the snap-fit ​​hole 201 of the second bushing 3; Fourth, the other end of the positioning pin 6 is inserted into a mounting hole 501 of the cover plate body 51, and the cover plate 5 can move along the axial direction of the positioning pin 6 (the axial direction z of the first bushing 2); Finally, the first bushing 2 is pressed into the first through hole by the movement of the cover plate 5.

[0041] It should be understood that after the first bushing 2 and the second bushing 3 are installed, the locating pin 6 needs to be removed from the snap-fit ​​hole 201 of the second bushing 3 to avoid affecting the bolt connection between the second bushing 3 and the mounting part 4.

[0042] In this embodiment, the positioning pin 6 is inserted into a mounting hole 501 of the cover plate body 51, which is an oblong hole. The oblong hole can absorb the relative positional error between the first bushing 2 and the second bushing 3. At the same time, the positioning pin 6 is a movable pin with a range of ±2mm to ensure that the cover plate 5 can be installed in the correct position, thereby preventing misalignment of the mounting hole 501 of the cover plate body 51 and the snap-fit ​​hole 201 of the second bushing 3 due to deformation of the first bushing 2 and the second bushing 3 during the installation process.

[0043] In this embodiment, the snap-fit ​​part 52 snaps into the snap-fit ​​hole 201 of the first bushing 2, thereby realizing the snap-fit ​​between the cover plate 5 and the first bushing 2. After the cover plate 5 and the first bushing 2 are snapped together, the cover plate body part 51 can press the first bushing 2 into the first through hole to realize the press-fitting of the first bushing 2.

[0044] Furthermore, after the cover plate body 51 presses the first bushing 2 into the first through hole, the cover plate body 51 is connected to the first bushing 2 through the snap-fit ​​part 52, which facilitates the bolts to pass through the cover plate body 51 and the first bushing 2 in sequence, so as to realize the connection between the first bushing 2 and the mounting part 4.

[0045] Combination Figure 3 and Figure 4 As shown, the snap-fit ​​hole 201 includes a first hole segment 201a, an intermediate hole segment 201b, and a second hole segment 201c. The first hole segment 201a and the second hole segment 201c are arranged opposite each other along the radial direction of the intermediate hole segment 201b, and both the first hole segment 201a and the second hole segment 201c are connected to the intermediate hole segment 201b. The snap-fit ​​part 52 includes a first snap-fit ​​section 521 and a second snap-fit ​​section. The first snap-fit ​​section 521 snaps into the corresponding first hole segment 201a, and the second snap-fit ​​section snaps into the corresponding second hole segment 201c.

[0046] In this embodiment, when the cover plate 5 is engaged with the first bushing 2, the first engaging segment 521 engages within the first hole segment 201a of the first bushing 2, and the second engaging segment engages within the second hole segment 201c of the first bushing 2. After the cover plate 5 and the first bushing 2 are engaged, a bolt passes sequentially through a mounting hole 501 and the intermediate hole segment 201b of the first bushing 2 to connect the cover plate 5 and the first bushing 2. The engaging hole 201 is divided into a first hole segment 201a, an intermediate hole segment 201b, and a second hole segment 201c. This ensures that the engaging part 52 can engage within the engaging hole 201, while also allowing the bolt to pass through the engaging hole 201 to connect the cover plate 5 and the first bushing 2.

[0047] In addition, after the cover plate 5 is engaged with the first bushing 2, another bolt passes through the other mounting hole 501 and the intermediate hole section 201b of the second bushing 3 in sequence to connect the cover plate 5 and the second bushing 3.

[0048] In other embodiments, when the cover plate 5 is engaged with the second bushing 3, the first engaging segment 521 is engaged in the first hole segment 201a of the second bushing 3, and the second engaging segment is engaged in the second hole segment 201c of the second bushing 3.

[0049] Combination Figure 2 , Figure 5 and Figure 6 As shown, the elastic part 22 includes a first protruding section 221, an intermediate connecting section 222, and a second protruding section 223. The intermediate connecting section 222 is connected between the inner tube 21 and the outer tube 23. The first protruding section 221 and the second protruding section 223 are connected one-to-one along the axial direction z of the first bushing 2 to the two opposite sides of the intermediate connecting section 222. Both the first protruding section 221 and the second protruding section 223 protrude relative to the outer tube 23. The first protruding section 221 is in contact with the cover plate 5.

[0050] In this embodiment, when the bushing assembly is subjected to external force, the first protrusion 221 can prevent the outer tube 23 from directly contacting the cover plate body 51, thereby the first protrusion 221 can play the role of vibration reduction, sound insulation and buffering, so as to improve the NVH performance of the whole vehicle.

[0051] In this embodiment, the second protrusion 223 is used to contact the vehicle body. When the bushing assembly is subjected to external force, the second protrusion 223 can prevent the outer tube 23 from directly contacting the vehicle body, thereby enabling the second protrusion 223 to play a role in vibration reduction, sound insulation and buffering, so as to improve the NVH performance of the whole vehicle.

[0052] In this embodiment, the elastic part 22 includes two mutually spaced first protrusions 221 and two mutually spaced second protrusions 223. The two first protrusions 221 are arranged opposite each other in the radial direction along the snap-fit ​​hole 201, and the two second protrusions 223 are arranged opposite each other in the radial direction along the snap-fit ​​hole 201.

[0053] Combination Figure 4 As shown, the elastic part 22 is provided with a first elastic space 202 and a second elastic space 203 that are spaced apart from each other. The first elastic space 202 and the second elastic space 203 are arranged opposite each other along the radial direction of the snap hole 201.

[0054] In this embodiment, when the first bushing 2 and the second bushing 3 are working, the elastic part 22 undergoes elastic deformation under force. The first elastic space 202 and the second elastic space 203 can provide space for the elastic part 22 to undergo elastic deformation, so as to achieve vibration reduction and buffering.

[0055] This embodiment also provides a subframe structure, including a subframe body 1 and the aforementioned bushing assembly, wherein the subframe body 1 is connected to the bushing assembly.

[0056] Combination Figure 1 As shown, the subframe body 1 includes a front crossbeam 11, a rear crossbeam 12, a first longitudinal beam 13, and a second longitudinal beam 14. The front crossbeam 11 and the rear crossbeam 12 are arranged opposite each other along the length direction x of the first longitudinal beam 13, and the first longitudinal beam 13 and the second longitudinal beam 14 are arranged opposite each other along the length direction y of the rear crossbeam 12. The first longitudinal beam 13 and the second longitudinal beam 14 are both connected between the front crossbeam 11 and the rear crossbeam 12.

[0057] In this embodiment, when the subframe structure is connected to the vehicle body, the front crossbeam 11 is closer to the front of the vehicle body than the rear crossbeam 12, and the rear crossbeam 12 is closer to the rear of the vehicle body than the front crossbeam 11.

[0058] Combination Figure 1 As shown, the subframe structure includes two symmetrically arranged bushing assemblies. One bushing assembly is connected to the rear crossbeam 12 and the first longitudinal beam 13, and the other bushing assembly is connected to the rear crossbeam 12 and the second longitudinal beam 14.

[0059] In this embodiment, one bushing assembly is located at the connection position between the rear crossbeam 12 and the first longitudinal beam 13, and the mounting part 4 is connected to the rear crossbeam 12 and the first longitudinal beam 13; another bushing assembly is located at the connection position between the rear crossbeam 12 and the second longitudinal beam 14, and the mounting part 4 is connected to the rear crossbeam 12 and the second longitudinal beam 14.

[0060] In this embodiment, when the subframe body 1 is connected to the vehicle body, one bolt passes through a mounting hole 501 and the intermediate hole section 201b of the first bushing 2 in sequence, and is connected to the vehicle body; another bolt passes through another mounting hole 501 and the intermediate hole section 201b of the second bushing 3 in sequence, and is connected to the vehicle body.

[0061] In this embodiment, under heavy axle load, the subframe body 1 is connected to the vehicle body through the bushing assembly. Both the first bushing 2 and the second bushing 3 can withstand a portion of the Z-axis force, thereby reducing the static stiffness and dynamic stiffness of the first bushing 2 and the second bushing 3, and improving the NVH performance of the whole vehicle.

[0062] It should be understood that when the subframe structure is connected to the vehicle body through a single rear bushing, the single rear bushing bears a large Z-axis force. Therefore, replacing the single rear bushing with a bushing assembly allows both the first bushing 2 and the second bushing 3 to bear a portion of the Z-axis force, which is beneficial to improving the NVH performance of the entire vehicle.

[0063] In this embodiment, when the first bushing 2 is installed in the first through hole and the second bushing 3 is installed in the second through hole, the two first protrusions 221 are arranged opposite each other along the length x of the first longitudinal beam 13, and the two second protrusions 223 are arranged opposite each other along the length x of the first longitudinal beam 13, which helps to improve the braking feel of the whole vehicle and reduce the probability of brake dive.

[0064] This embodiment also provides a vehicle, including a body and the aforementioned subframe structure, the subframe structure being connected to the body.

[0065] For other aspects of the vehicle's structure, please refer to existing technology; details will not be elaborated here.

[0066] In this utility model, unless otherwise explicitly specified and limited, the terms "assembly" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0067] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. "A plurality of" means two or more, unless otherwise explicitly specified. The terms "some embodiments," "exemplarily," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this utility model.

[0068] The illustrative expressions of the terms used above do not necessarily refer to the same embodiments or examples. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, those skilled in the art can combine and integrate the different embodiments or examples described herein, as well as the features of those different embodiments or examples, without contradiction.

[0069] Although embodiments of the present invention have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention. Therefore, all changes or modifications made in accordance with the claims and description of the present invention should fall within the scope of the patent coverage of the present invention.

Claims

1. A bushing assembly characterized by, include: A first bushing, a second bushing, and a mounting component are provided, wherein the first bushing and the second bushing are spaced apart, and the mounting component is connected to the first bushing and the second bushing, and the mounting component is used to install the first bushing and the second bushing.

2. The bushing assembly of claim 1, wherein, The mounting component has a first through hole and a second through hole, the first through hole and the second through hole are spaced apart, the first bushing is located in the first through hole and is connected to the hole wall of the first through hole, and the second bushing is located in the second through hole and is connected to the hole wall of the second through hole.

3. The bushing assembly of claim 1, wherein, The bushing assembly also includes a cover plate, which is correspondingly disposed with the first bushing and the second bushing, and is connected to the first bushing and the second bushing.

4. The bushing assembly according to claim 3, characterized in that, Both the first bushing and the second bushing include an inner tube, an elastic part, and an outer tube. The inner tube is located inside the outer tube, the elastic part is connected between the inner tube and the outer tube, and the inner tube is provided with a snap-fit ​​hole. The cover plate includes a cover plate body and a snap-fit ​​part. The cover plate body is connected to the snap-fit ​​part, and the snap-fit ​​part snaps into the snap-fit ​​hole of the first bushing or the snap-fit ​​hole of the second bushing.

5. The bushing assembly of claim 4, wherein, The snap-fit ​​hole includes a first hole segment, a middle hole segment, and a second hole segment. The first hole segment and the second hole segment are arranged opposite each other along the radial direction of the middle hole segment, and both the first hole segment and the second hole segment are in communication with the middle hole segment. The snap-fit ​​portion includes a first snap-fit ​​section and a second snap-fit ​​section, wherein the first snap-fit ​​section snaps into the first hole section corresponding to it, and the second snap-fit ​​section snaps into the second hole section corresponding to it.

6. The bushing assembly of claim 4, wherein, The elastic part includes a first protruding section, an intermediate connecting section, and a second protruding section. The intermediate connecting section is connected between the inner tube and the outer tube. The first protruding section and the second protruding section are connected one-to-one along the axial direction of the snap-fit ​​hole to two opposite sides of the intermediate connecting section. Both the first protruding section and the second protruding section protrude relative to the outer tube. The first protruding section is in contact with the cover plate.

7. The bushing assembly according to claim 4, characterized in that, The elastic part is provided with a first elastic space and a second elastic space that are spaced apart from each other, and the first elastic space and the second elastic space are arranged opposite each other along the radial direction of the snap-fit ​​hole.

8. A subframe structure, characterized in that, It includes a subframe body and a bushing assembly as described in any one of claims 1-7, wherein the subframe body is connected to the bushing assembly.

9. The subframe structure according to claim 8, characterized by The subframe body includes a front crossbeam, a rear crossbeam, a first longitudinal beam, and a second longitudinal beam. The front crossbeam and the rear crossbeam are arranged opposite to each other, and the first longitudinal beam and the second longitudinal beam are arranged opposite to each other. The first longitudinal beam and the second longitudinal beam are both connected between the front crossbeam and the rear crossbeam. The subframe structure includes two bushing assemblies, one of which is connected to the rear crossbeam and the first longitudinal beam, and the other of which is connected to the rear crossbeam and the second longitudinal beam.

10. A vehicle characterized by comprising: It includes a vehicle body and a subframe structure as described in any one of claims 8-9, wherein the subframe structure is connected to the vehicle body.

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