Suspension structures and vehicles

Abstract

The application discloses a suspension structure and a vehicle. The suspension structure comprises a pipe body, a main spring arranged in the pipe body and comprising a plurality of vibration isolation parts arranged around the axial direction of the pipe body and a connecting part connecting the plurality of vibration isolation parts, opposite surfaces of the plurality of vibration isolation parts being part of a spherical surface, each vibration isolation part having a cavity, and an inner core penetrating through the connecting part. According to the suspension structure of the embodiment of the application, the plurality of vibration isolation parts are arranged around the axial direction of the pipe body, the opposite surfaces of the plurality of vibration isolation parts are part of a spherical surface, and the connecting part connects the plurality of vibration isolation parts, so that the volume of the main spring in the pipe body can be effectively increased while the rigidity of the suspension structure is ensured, the vibration isolation performance of the suspension structure is greatly improved, the handling stability of the vehicle is improved, and the influence on the NVH performance indexes of the vehicle is avoided. In addition, the suspension structure is simple in structure, and is favorable for improving the reliability and universality of the suspension structure.

Description

Technical Field

[0001] This invention relates to the field of automotive mounting technology, and more specifically, to a mounting structure and a vehicle. Background Technology

[0002] As a crucial subsystem of the electric vehicle's vibration system, the motor powertrain mounting system's vibration performance directly impacts passenger comfort. The performance of the motor powertrain mounting system largely depends on its structural design and other factors.

[0003] In some related technologies, the suspension structure contains multiple rubber main springs within its tube. These rubber main springs are arc-shaped, with their arc surfaces facing the inner core, and a significant gap exists between the rubber main springs and the inner core. When the inner core is subjected to vibrations generated by the powertrain, the rubber main springs come into contact with the inner core to achieve a vibration-absorbing and buffering effect. However, the small size of the rubber main springs results in poor vibration isolation performance, which is detrimental to vehicle handling stability and consequently severely affects the vehicle's NVH (Noise, Vibration, Harshness) performance. Summary of the Invention

[0004] In view of this, the present invention aims to propose a suspension structure that can effectively improve the vibration isolation performance of the suspension structure, and the suspension structure is simple to implement and highly adaptable.

[0005] To achieve the above objectives, the technical solution of the present invention is implemented as follows: A suspension structure includes: a tube body; a main spring disposed within the tube body and including a plurality of vibration isolation portions arranged axially around the tube body and a connecting portion connecting the plurality of vibration isolation portions, wherein the opposing surfaces of the plurality of vibration isolation portions are part of a sphere and each vibration isolation portion has a cavity; and an inner core passing through the connecting portion.

[0006] Furthermore, the cavity is a hemispherical cavity, and the hemispherical cavity is concentric with the spherical surface corresponding to the vibration isolation part.

[0007] Furthermore, the cavity of the vibration isolation part has an open opening facing away from the connecting part, and the tube body is provided with a first opening that is opposite to and communicates with the open opening.

[0008] Furthermore, the inner core is vulcanized to the main spring; and / or, the main spring is vulcanized to the tube body.

[0009] Furthermore, the main spring is made of rubber.

[0010] Furthermore, the connecting portion is provided with at least one recess, and in the circumferential direction of the tube body, the recess is located between two adjacent vibration isolation portions. The suspension structure also includes at least one limiting member, which is connected to the tube body and located in the corresponding recess.

[0011] Furthermore, the limiting member has a damping cavity on the side facing away from the main spring, and the tube body has a second opening that is opposite to and communicates with the damping cavity.

[0012] Furthermore, in a cross-section perpendicular to the axis of the tube, the edge of the limiting member and the edge of the recess are concentric arcs.

[0013] Furthermore, the surface of the limiting member facing the connecting part is a cylindrical surface, the outer surface of the connecting part is an annular surface, the center line of the annular surface is perpendicular to the axis of the tube body, and the middle part of the annular surface is recessed inward to define the recess.

[0014] Compared with the prior art, the suspension structure described in this invention has the following advantages: According to embodiments of the present invention, the suspension structure, by arranging multiple vibration isolation parts axially around the tube body, wherein the opposing surfaces of the multiple vibration isolation parts are part of a sphere, and the connecting parts connect the multiple vibration isolation parts, can effectively increase the volume of the main spring in the tube body while ensuring the stiffness of the suspension structure, thereby greatly improving the vibration isolation performance of the suspension structure, improving the vehicle's handling stability, and avoiding affecting the vehicle's NVH performance indicators. Furthermore, the suspension structure has a simple structure, which is beneficial to improving the reliability and versatility of the suspension structure.

[0015] Another object of the present invention is to provide a vehicle including the above-described suspension structure.

[0016] Compared to existing technologies, the vehicle described in this invention has the same advantages as the suspension structure, which will not be repeated here. Attached Figure Description

[0017] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings: Figure 1 This is a schematic diagram of the suspension structure according to an embodiment of the present invention; Figure 2 yes Figure 1 Top view; Figure 3 yes Figure 2 A cross-sectional view along the direction indicated by line AA; Figure 4 yes Figure 2 A cross-sectional view along the direction indicated by line BB.

[0018] Explanation of reference numerals in the attached figures: Suspension structure 100; 10. Pipe body; 11. Inner tube; 12. Outer tube; 13. First opening; 14. Second opening; Main spring 20; vibration isolation part 21; connecting part 22; cavity 202; opening 221; recess 23; Inner core 30; limiting component 40; vibration damping cavity 41. Detailed Implementation

[0019] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0020] The following will refer to Figures 1-4 The present invention will be described in detail with reference to the embodiments.

[0021] In recent years, competition in the automotive industry has become increasingly fierce. With the rapid development of new energy vehicles, electric vehicles are becoming more and more common. Due to differences in powertrains, the suspension structures used in gasoline vehicles and new energy vehicles also differ significantly. The suspension structure is located between the vehicle's powertrain and the chassis, and it can reduce the force transmission between the two.

[0022] To improve product reliability, new energy vehicle suspensions mostly adopt rubber bushings. This structure has good durability, is easy to assemble, and has strong applicability.

[0023] Reference Figures 1-4 As shown, the suspension structure 100 according to an embodiment of the present invention includes a tube body 10, a main spring 20, and an inner core 30.

[0024] Specifically, such as Figure 1 As shown, the main spring 20 can be disposed inside the tube body 10, and the tube body 10 can fix the main spring 20. In some embodiments, the tube body 10 can be a cylinder. For example, the tube body 10 can be composed of an inner tube 11 and an outer tube 12. The inner tube 11 and the outer tube 12 can be interference-fitted to prevent the inner tube 11 and the outer tube 12 from rotating due to interference forces (such as braking, acceleration, or other dynamic loads) during the powertrain or vehicle operation, thereby avoiding affecting the support effect of the suspension structure 100 on the powertrain and improving the structural stability of the suspension structure 100.

[0025] In some related technologies, multiple rubber springs are installed inside the tube. These rubber springs are arc-shaped, with their arc surfaces facing the inner core, and a large gap exists between the rubber springs and the inner core. When the inner core is subjected to vibrations generated by the powertrain, the rubber springs come into contact with the inner core to achieve a vibration absorption and buffering effect. However, the small size of the rubber springs results in poor vibration isolation performance, which is detrimental to the vehicle's handling stability and thus seriously affects the vehicle's NVH performance indicators.

[0026] In this application, such as Figure 1 As shown, the main spring 20 may include multiple vibration isolation sections 21 and connecting sections 22. The multiple vibration isolation sections 21 may be arranged axially around the tube body 10. For example, the multiple vibration isolation sections 21 may be evenly arranged axially around the tube body 10. Furthermore, the connecting sections 22 connect the multiple vibration isolation sections 21. In addition, the opposing surfaces of the multiple vibration isolation sections 21 are part of a sphere. Therefore, the multiple vibration isolation sections 21 can be considered as part of multiple spheres, thereby allowing the main spring 20 to fill more space in the tube body 10, increasing the volume of the main spring 20.

[0027] The embodiments of the present invention do not impose a special limitation on the number of vibration isolation parts 21. In some embodiments, such as Figure 1 As shown, two vibration isolation sections 21 can be provided, with the two vibration isolation sections 21 along the first radial direction (e.g., Figure 2 The two vibration isolation sections 21 are arranged opposite each other (in the left-right direction shown). Furthermore, each of the two vibration isolation sections 21 can be considered as part of a hemisphere. A connecting section 22 connects the two vibration isolation sections 21. Therefore, on the one hand, it avoids increasing the gap between the vibration isolation sections 21 due to the arrangement of multiple vibration isolation sections 21, thus allowing the main spring 20 to fill a larger space; on the other hand, the arrangement of two vibration isolation sections 21 simplifies the structural design of the main spring 20 and effectively reduces the processing difficulty of the suspension structure 100.

[0028] It should be noted that, in this embodiment of the invention, the main spring 20 is made of a deformable material. When subjected to energy generated by vibration or impact, the deformable material can absorb and buffer energy through deformation. For example, during vehicle operation, the vehicle's powertrain, such as the engine, will vibrate. By setting a suspension structure 100 between the engine and the frame, the main spring 20 can absorb the energy generated by the engine vibration through deformation, thereby effectively preventing the vibration generated by the engine from being transmitted to the passenger compartment and avoiding discomfort or fatigue for the occupants.

[0029] For example, when a vehicle encounters a bumpy road or obstacles, the vehicle body will be subjected to vibration or impact. The energy absorption and buffering effect of the main spring 20 prevents the vibration of the vehicle body from being transmitted to the engine, thereby helping to ensure the stable operation of the engine and improving its service life.

[0030] In some specific embodiments, the main spring 20 is made of rubber. Rubber is highly elastic and can absorb energy and cushion vibrations through its own deformation, resulting in better vibration isolation performance. Furthermore, the deformation of rubber is recoverable. On the one hand, the main spring 20 can be used multiple times, avoiding frequent replacements that would affect the user experience; on the other hand, the deformation of the main spring 20 caused by vibration can recover, providing a certain degree of vibration damping. In addition, rubber can maintain its elasticity over a wide temperature range, for example, from -50℃ to 150℃. Therefore, even if the engine generates a large amount of heat during operation, the main spring 20 can still absorb energy through elastic deformation, making the suspension structure 100 highly adaptable.

[0031] In this application, due to the increased volume of the main spring 20, the vibration absorption effect produced by the main spring 20 is better, which can more effectively improve the vibration isolation performance of the suspension structure 100. Furthermore, connecting multiple vibration isolation parts 21 through the connecting part 22 helps to improve the structural stiffness of the suspension structure 100 and enhance its support and limiting effect on the powertrain. For example, it limits the maximum displacement that the powertrain can produce, thereby preventing collisions or interference between the powertrain and adjacent parts and ensuring the normal operation of the engine.

[0032] And, as Figure 1 and Figure 4 As shown, the vibration isolation section 21 may have a cavity 202. Therefore, while ensuring the stiffness of the suspension structure 100, the vibration isolation section 21 is more prone to deformation. For example, after absorbing torque or vibration transmitted by the engine, the vibration isolation section 21 can deform in the direction of compressing the cavity 202 to absorb energy and achieve a buffering and vibration reduction effect.

[0033] In addition, such as Figure 1 , Figure 3 and Figure 4 As shown, the inner core 30 can pass through the connecting portion 22, and the connecting portion 22 can fix the inner core 30 in place. In some embodiments, the inner core 30 can support and limit the powertrain. For example, the inner core 30 can be an elliptical cylinder, and the inner core 30 has a section along the height direction (e.g., Figure 1 The through-hole (shown in the vertical direction) allows the powertrain connector to pass through for mounting to the inner core 30. Thus, the suspension structure 100 provides support and limits for the powertrain.

[0034] During operation, vibrations or torques generated by the powertrain, such as the engine, can be transmitted to the inner core 30 via the connector. The inner core 30 passes through the connecting portion 22, allowing energy from the engine to be transmitted to it. The connecting portion 22 connects multiple vibration isolation portions 21. After receiving energy from the connecting portion 22, these portions can deform in any direction, for example, deforming and compressing the cavity 202, to achieve an energy absorption and buffering effect. This prevents the torque or vibrations generated by the engine from being transmitted to the passenger compartment through the frame, improving the vibration isolation performance of the suspension structure 100 and preventing dizziness or discomfort for the occupants, thus enhancing their user experience.

[0035] Compared to some related technologies, by having multiple vibration isolation sections 21 whose opposing surfaces are part of a sphere, and by connecting multiple vibration isolation sections 21 with connecting section 22, the main spring 20 can fill more space in the tube body 10, thereby increasing the volume of the main spring 20 and resulting in better vibration isolation performance of the suspension structure 100. Furthermore, the suspension structure 100 has a simple structure, which on the one hand ensures high reliability, and on the other hand, improves its assemblability and versatility.

[0036] According to an embodiment of the present invention, the suspension structure 100, by arranging multiple vibration isolation portions 21 axially around the tube body 10, wherein the opposing surfaces of the multiple vibration isolation portions 21 are part of a sphere, and the connecting portion 22 connects the multiple vibration isolation portions 21, can effectively increase the volume of the main spring 20 in the tube body 10 while ensuring the stiffness of the suspension structure 100, thereby greatly improving the vibration isolation performance of the suspension structure 100, improving the vehicle's handling stability, and avoiding affecting the vehicle's NVH performance indicators. Furthermore, the suspension structure 100 has a simple structure, which is beneficial to improving the reliability and versatility of the suspension structure 100.

[0037] In some embodiments of the present invention, such as Figure 1 As shown, the cavity 202 can be a hemispherical cavity, and the hemispherical cavity is concentric with the spherical surface of the corresponding vibration isolation part 21. This is beneficial for ensuring that the wall thickness of the cavity 202 of the vibration isolation part 21 is uniform at any position. When the vibration isolation part 21 is subjected to vibration energy absorption, on the one hand, it can avoid the vibration isolation performance being affected by uneven wall thickness around the cavity 202; on the other hand, it can prevent certain areas of the cavity wall of the cavity 202 from being too thin, thereby avoiding fatigue damage to the vibration isolation part 21 and improving its service life.

[0038] To further improve the vibration isolation performance of the suspension structure 100, in some embodiments, such as Figure 1 and Figure 4As shown, the cavity 202 of the vibration isolation part 21 may have an opening 221 facing away from the connecting part 22. Therefore, while increasing the volume of the main spring 20, the stiffness can be reduced. When the main spring 20 is subjected to the energy generated by vibration, it can undergo more deformation, thereby further improving the vibration isolation performance of the main spring 20. This results in better prevention of dizziness for occupants during driving and better assurance of stable engine operation.

[0039] On the other hand, since the opening 221 is positioned away from the connecting part 22, it can face the inner wall of the tube body 10, thus avoiding any impact on the structural stiffness of the suspension structure 100. Simultaneously, since the inner core 30 passes through the connecting part 22, it facilitates the absorption and buffering effect of vibration energy transmitted from the connecting part 22 to the inner core 30 through deformation of the vibration isolation part 21. Furthermore, the opening 221 in the cavity 202 makes the manufacturing of the main spring 20 more convenient, especially the shaping of the cavity 202, which facilitates the formation of cavities 202 of arbitrary shape and volume, reducing manufacturing difficulty.

[0040] And, as Figure 1 and Figure 4 As shown, the tube body 10 may be provided with a first opening 13 that is opposite to and communicates with the open opening 221, and the first opening 13 on the tube body 10 coincides with the projection of the open opening 221 of the vibration isolation part 21 in the direction perpendicular to the axial direction of the tube body 10.

[0041] In some embodiments of the present invention, the inner core 30 and the main spring 20 can be vulcanized together. This vulcanization connection provides good adhesive strength between the inner core 30 and the main spring 20, preventing axial relative movement or rotation between them, thus improving the structural stability of the suspension structure 100 and enhancing its support for engine stability. Furthermore, the vulcanization process between the inner core 30 and the main spring 20 improves their tensile and wear resistance, significantly extending the service life of the suspension structure 100.

[0042] In some embodiments of the present invention, the main spring 20 and the tube body 10 can be vulcanized together. This provides good adhesive strength between the main spring 20 and the tube body 10, preventing the main spring 20 from moving or rotating relative to the tube body 10 when absorbing vibration energy to achieve a vibration reduction effect. This avoids affecting the support effect of the suspension structure 100 on the engine, ensuring stable engine operation.

[0043] In some embodiments where the tube body 10 includes an inner tube 11 and an outer tube 12, the main spring 20 can be vulcanized together with the inner tube 11, and then the outer tube 12 and the inner tube 11 can be press-fitted together by an interference fit to form the suspension structure 100. In use, the suspension structure 100 can be press-fitted onto the vehicle body mounting point using a press-fitting machine.

[0044] Of course, in some embodiments, the inner core 30 can be vulcanized with the main spring 20, and the main spring 20 can be vulcanized with the tube body 10, so that the suspension structure 100 can achieve a better effect of stable support and limiting. These are all within the protection scope of the present invention.

[0045] According to some embodiments of the present invention, such as Figure 1 and Figure 2 As shown, the connecting portion 22 is provided with at least one recess 23. Furthermore, in the circumferential direction of the tube body 10, the recess 23 may be located between two adjacent vibration isolation portions 21. In some embodiments, the bottom surface of the recess 23 may be an arc-shaped surface.

[0046] On the one hand, providing the recess 23 can reduce the stiffness of the main spring 20, making it easier for the main spring 20 to deform and achieve an energy absorption and buffering effect; on the other hand, providing the recess 23 can create a certain space between the main spring 20 and the tube body 10. For example, in some embodiments, the suspension structure 100 also includes at least one limiting member 40. The limiting member 40 can be connected to the tube body 10 and located within the corresponding recess 23, and the limiting member 40 can limit the vibration isolation part 21. In some embodiments, the suspension structure 100 can provide two vibration isolation parts 21, and two recesses 23 can be provided opposite to each other in the connecting part 22, with the two recesses along the second radial direction (e.g., Figure 2 The arrangement (as shown in the front-back direction) allows the limiting member 40 to be placed within the corresponding recess 23.

[0047] Specifically, the limiting member 40 can prevent the main spring 20 from directly contacting the inner wall of the tube body 10 after deformation. On the one hand, the tube body 10 is generally made of metal, and the limiting member 40 can prevent the main spring 20 from deforming and directly contacting the tube body 10, thus preventing wear and increasing the service life of the main spring 20. On the other hand, the limiting member 40 can limit the deformation of the main spring 20, thereby preventing excessive deformation and affecting the service life of the main spring 20.

[0048] To prevent the main spring 20 from impacting or rubbing against the limiting member 40 and causing abnormal noise when it deforms, in some embodiments, such as Figure 2 and Figure 3As shown, a damping cavity 41 can be provided on the side of the limiting member 40 facing away from the main spring 20. Specifically, by providing the damping cavity 41, the stiffness of the limiting member 40 can be effectively reduced. When the main spring 20 deforms and contacts the limiting member 40, the limiting member 40 can quickly deform to absorb the energy transmitted by the main spring 20. On the one hand, this can prevent the limiting member 40 from failing to deform in time after the main spring 20 directly impacts the limiting member 40, thus affecting the vibration isolation performance of the limiting member 40; on the other hand, since the limiting member 40 can deform quickly, it can prevent the main spring 20 from rubbing against the limiting member 40 and generating abnormal noise, which is beneficial to improving the user experience of the occupants.

[0049] Specifically, the limiting member 40 can be made of a deformable material, such as rubber. When the main spring 20 is subjected to vibration or torque, it will deform in any direction. When the main spring 20 deforms, it plays a primary role in buffering and vibration isolation. When the main spring 20 deforms to the point that it contacts the limiting member 40, it can transfer the energy generated by the vibration to the limiting member 40. Then, the limiting member 40 can deform and compress the damping cavity 41 to absorb the energy transferred by the main spring 20, thereby achieving a secondary buffering and vibration isolation effect, which is beneficial to improving the vibration isolation performance of the suspension structure 100.

[0050] Furthermore, both the main spring 20 and the limiting member 40 can be centrally symmetrical structures when projected along the axial direction of the tube body 10. Therefore, when the main spring 20 deforms due to energy absorption, it facilitates more uniform contact between the two limiting members 40 and the main spring 20, achieving a secondary vibration isolation effect. This further enhances the vehicle's stability and ride comfort, ensuring stable engine operation. It also prevents excessive force on one of the limiting members 40, thus extending its service life.

[0051] In addition, such as Figure 1 and Figure 3 As shown, the tube body 10 may be provided with a second opening 14 that is opposite to and communicates with the open opening 221, and the second opening 14 on the tube body 10 coincides with the projection of the open opening 221 of the vibration isolation portion 21 in a direction perpendicular to the axial direction of the tube body 10. In some embodiments, such as Figure 2As shown, in a cross-section perpendicular to the axis of the tube 10, the edge of the limiting member 40 and the edge of the recess 23 can be concentric arcs. For example, in a cross-section passing through the center of the sphere of the vibration isolation part 21 and perpendicular to the axis of the tube 10, the edge of the recess 23 is closest to the limiting member 40. That is, when the main spring 20 deforms, this edge is the first to contact the edge of the limiting member 40. Since the edge of the limiting member 40 and the edge of the recess 23 are concentric arcs, the contact area between the recess 23 and the limiting member 40 can be effectively increased. On the one hand, the increased area of ​​the recess 23 and the limiting member 40 allows for rapid energy transfer, thereby improving the vibration isolation performance of the suspension structure 100. On the other hand, it helps to make the surface of the limiting member 40 facing the main spring 20 more uniformly stressed, thus improving the durability of the limiting member 40.

[0052] In some embodiments, such as Figure 2 and Figure 3 As shown, the surface of the limiting member 40 facing the connecting part 22 is cylindrical. Therefore, in the axial direction of the tube body 10, the curvature of the surface of the limiting member 40 facing the main spring 20 is the same everywhere. Any area of ​​the limiting member 40 facing the main spring 20 can be in uniform contact with the main spring 20, resulting in good energy absorption and vibration damping effect. It can also effectively prevent the limiting member 40 from bearing excessive force in a certain area, thus affecting its service life.

[0053] Furthermore, the outer surface of the connecting portion 22 is an annular surface, and the center line of the annular surface is perpendicular to the axis of the tube body 10. The middle part of the annular surface can be recessed inward to define the recess 23. In the embodiment where the suspension structure 100 is provided with two vibration isolation portions 21, the vibration isolation portion 21 and the connecting portion 22 can be roughly constructed in a gourd shape. Thus, when the inner core 30 moves simultaneously in any two or three directions along the axial direction, the first radial direction, and the second radial direction, causing the main spring 20 to deform with the inner core 30, the annular surface of the recess 23 can still contact the cylindrical surface of the limiting member 40 with a large area, thereby playing the role of limiting and secondary vibration isolation, and achieving better energy transfer and vibration isolation effects.

[0054] A vehicle according to another embodiment of the present invention includes the suspension structure 100 of the above embodiment. Since the suspension structure 100 of the present invention has the aforementioned beneficial technical effects, the vehicle according to the present invention, by arranging multiple vibration isolation portions 21 axially around the tube body 10, with the opposing surfaces of the multiple vibration isolation portions 21 being part of a sphere, and connecting portions 22 connecting the multiple vibration isolation portions 21, can effectively increase the volume of the main spring 20 in the tube body 10 while ensuring the stiffness of the suspension structure 100, thereby greatly improving the vibration isolation performance of the suspension structure 100, improving the vehicle's handling stability, and avoiding impact on the vehicle's NVH performance indicators. Furthermore, the suspension structure 100 has a simple structure, which is beneficial for improving the reliability and versatility of the suspension structure 100.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A suspension structure, characterized in that, include: tube body(10); The main spring (20) is disposed inside the tube body (10) and includes a plurality of vibration isolation parts (21) arranged axially around the tube body (10) and a connecting part (22) connecting the plurality of vibration isolation parts (21). The opposing surfaces of the plurality of vibration isolation parts (21) are part of a sphere, and each vibration isolation part (21) has a cavity (202). The inner core (30) passes through the connecting part (22); the connecting part (22) is provided with at least one recess (23), and the recess (23) is located between two adjacent vibration isolation parts (21) in the circumferential direction of the tube body (10). The suspension structure (100) also includes at least one limiting member (40), which is a centrally symmetrical structure in the projection along the axial direction of the tube body (10); the limiting member (40) and the tube body (10) are connected. 0) Connected and located within the corresponding recess (23); on a cross section perpendicular to the axis of the tube body (10), the edge of the limiting member (40) and the edge of the recess (23) are concentric arcs, the surface of the limiting member (40) facing the connecting part (22) is a cylindrical surface, the outer surface of the connecting part (22) is an annular surface, the center line of the annular surface is perpendicular to the axis of the tube body (10), and the middle part of the annular surface is recessed inward to define the recess (23).

2. The suspension structure according to claim 1, characterized in that, The cavity (202) is a hemispherical cavity, and the hemispherical cavity is concentric with the spherical surface of the corresponding vibration isolation part (21).

3. The suspension structure according to claim 1, characterized in that, The cavity (202) of the vibration isolation part (21) has an open opening (221) facing away from the connecting part (22), and the tube body (10) is provided with a first opening (13) that is opposite to and communicates with the open opening (221).

4. The suspension structure according to claim 1, characterized in that, The inner core (30) is vulcanized to the main spring (20); and / or, the main spring (20) is vulcanized to the tube body (10).

5. The suspension structure according to claim 1, characterized in that, The main spring (20) is made of rubber.

6. The suspension structure according to claim 1, characterized in that, The limiting member (40) has a damping cavity (41) on the side facing away from the main spring (20), and the tube body (10) has a second opening (14) that is opposite to and communicates with the damping cavity (41).

7. A vehicle, characterized in that, The suspension structure according to any one of claims 1-6.

Images