Suspension limiting structure and vehicle

Abstract

The embodiment of the present application discloses a suspension limiting structure and a vehicle, wherein the suspension limiting structure comprises an outer support member, an elastic member, an inner core and an elastic extrusion member, wherein the outer support member is connected to a power assembly; the elastic member is connected to the outer support member; the inner core is connected to the elastic member; the elastic extrusion member is connected to the inner core, and a liquid storage cavity is arranged around the inner core, wherein the liquid storage cavity contains a non-Newtonian fluid; the elastic extrusion member can at least partially collapse into the liquid storage cavity to extrude the non-Newtonian fluid in the liquid storage cavity. In the present application, the shear thickening or shear thinning properties of the non-Newtonian fluid are utilized so that the suspension limiting structure can automatically adjust the stiffness according to the vehicle condition to meet various working conditions of the vehicle.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle vibration reduction, and in particular to a suspension limiting structure and a vehicle. Background Art

[0002] In the relevant technical field, when the vehicle is under high-load conditions such as sudden acceleration or going over speed bumps, the powertrain suspension needs to provide greater rigidity to limit the displacement of the powertrain, so as to make the vehicle driving feel more compact and avoid interference with surrounding parts due to insufficient powertrain limitation; under some conditions with smaller loads such as high-speed cruising, the powertrain suspension needs to provide less rigidity and improve the vibration isolation capability of the suspension to effectively suppress the transmission of external vibration and noise to the cab, thereby improving the comfort of the entire vehicle. At present, the limiting structure of the automobile powertrain suspension is usually a rubber bumper, but the driving conditions of the vehicle are complex, and the limiting structure of the rubber bumper cannot meet the requirements of various conditions. Summary of the invention

[0003] The embodiments of the present application provide a suspension limiting structure and a vehicle, which can automatically adjust their own stiffness according to different vehicle conditions.

[0004] In the first aspect, an embodiment of the present application provides a suspension limiting structure, which includes an outer support member, an elastic member, an inner core and an elastic extrusion member, wherein the outer support member is connected to a power assembly; the elastic member is connected to the outer support member; the inner core is connected to the elastic member; the elastic extrusion member is connected to the inner core, and a liquid storage cavity is provided around the inner core, wherein the liquid storage cavity contains a non-Newtonian fluid; the elastic extrusion member can at least partially collapse into the liquid storage cavity to extrude the non-Newtonian fluid in the liquid storage cavity.

[0005] Based on the suspension limiting structure of the embodiment of the present application, the outer support is connected to the powertrain to realize the connection between the suspension limiting structure and the powertrain, and the inner core is connected to the subframe to realize the connection between the suspension limiting structure and the subframe. In this way, when a relative displacement occurs between the powertrain and the subframe of the vehicle, the powertrain causes the inner core to have a tendency to move relative to the outer support. At this time, after the elastic member is deformed by the external force of the outer support or the inner core, the inner core is displaced relative to the outer support. If the deformation of the elastic member is sufficient to make the elastic member abut against the elastic extrusion member, the elastic extrusion member is deformed by the force to squeeze the non-Newtonian fluid in the liquid storage chamber. According to the non-Newtonian fluid "when encountering strong The non-Newtonian fluid has the property of shear thickening or shear thinning. When the force is applied slowly, the resistance generated by the non-Newtonian fluid is small, and when the force is applied violently, the resistance generated will be very large, and even solid form may appear. Then, when the vehicle is under the condition of instantaneous increase in load (for example, sudden acceleration of the vehicle, etc.), the non-Newtonian fluid is subjected to violent force and produces greater resistance, which inhibits the displacement of the powertrain. When the vehicle is under the condition of small working force (for example, cruising, etc.), the non-Newtonian fluid is subjected to slow force and produces less resistance, which improves the suspension vibration isolation rate, so that the suspension limit structure can adjust the stiffness automatically according to the vehicle condition to meet various working conditions of the vehicle.

[0006] In some embodiments of the present application, the inner core has the liquid storage cavity, and the liquid storage cavity forms an extrusion opening on the surface of the inner core; the elastic extrusion piece covers the extrusion opening.

[0007] Based on the above embodiment, the inner core opens a liquid storage cavity, and after the elastic extrusion piece covers the extrusion opening of the liquid storage cavity formed on the surface of the inner core, the inner core and the elastic extrusion piece surround the liquid storage cavity. The inner core is a rigid body, and the liquid storage cavity can be processed by turning or drilling. The process is simple, and because the inner core is a rigid body, the inner core will not deform when the non-Newtonian fluid is pressurized, and the non-Newtonian fluid can have a better extrusion effect. At this time, the non-Newtonian fluid can generate greater resistance when subjected to force, and the rear limit suspension structure has better suppression of powertrain displacement.

[0008] In some embodiments of the present application, the elastic extrusion member includes a main body, a first extrusion portion and a first buffer portion, the main body is connected to the inner core and covers the extrusion port; the first extrusion portion is connected to a side of the main body away from the inner core; the first buffer portion is connected to a side of the main body away from the first extrusion portion, the first buffer portion is in the liquid storage cavity, and when the first extrusion portion collapses into the liquid storage cavity, the first buffer portion can abut against a cavity wall of the liquid storage cavity away from the main body; or, the first buffer portion is in the liquid storage cavity and abuts against a cavity wall of the liquid storage cavity away from the main body and abuts against a cavity wall of the liquid storage cavity away from the main body.

[0009] Based on the above embodiment, the main body is connected to the inner core and covers the extrusion port, and then the main body and the inner core are used to surround a liquid storage cavity. The first extrusion portion is connected to the side of the main body away from the inner core to be convexly arranged on the surface of the main body. The elastic member squeezes the first extrusion portion to make the main body and the first extrusion portion collapse toward the liquid storage cavity to squeeze the non-Newtonian fluid in the liquid storage cavity. In addition, the first buffer portion is connected to the side of the main body away from the first extrusion portion and extends into the liquid storage cavity to separate the liquid storage cavity from the cavity wall of the main body. In this way, after the main body and the first extrusion portion collapse into the liquid storage cavity, the first buffer portion is deformed to buffer the external force transmitted from the support member to the inner core, that is, the suspension limiting structure simultaneously reduces the vibration transmitted from the sub-frame to the powertrain through the first buffer portion and the non-Newtonian fluid in the liquid storage cavity, so as to further enhance the vibration reduction capacity of the suspension limiting structure.

[0010] Similarly, when the first extrusion portion collapses into the liquid storage cavity, the first buffer portion abuts against the cavity wall of the liquid storage cavity away from the main body, and the first buffer portion and the non-Newtonian fluid in the liquid storage cavity jointly reduce the vibration transmitted from the subframe to the powertrain.

[0011] In some embodiments of the present application, the elastic extrusion member has the liquid storage cavity; or, the inner core has a first liquid storage sub-cavity; the elastic extrusion member has a second liquid storage sub-cavity connected to the first liquid storage sub-cavity; the liquid storage cavity includes the first liquid storage sub-cavity and the second liquid storage sub-cavity.

[0012] Based on the above embodiment, the elastic extrusion member is provided with a liquid storage cavity, so that the elastic extrusion member deforms to extrude the non-Newtonian fluid, but when the non-Newtonian fluid is subjected to force, the elastic extrusion member is deformed more greatly, that is, at this time, the non-Newtonian fluid is subjected to force slowly to generate smaller resistance, which has a better effect of improving the suspension vibration isolation rate;

[0013] When the inner core has a first liquid storage sub-cavity, and the elastic extrusion piece has a second liquid storage sub-cavity connected to the first liquid storage sub-cavity, after the non-Newtonian fluid in the liquid storage cavity is subjected to force, the non-Newtonian fluid causes the elastic extrusion piece to produce a larger deformation when subjected to force, but the deformation is smaller than that produced when the elastic extrusion piece has the entire liquid storage cavity. Therefore, the resistance generated by the non-Newtonian fluid at this time is appropriate, and the suspension limiting structure has a good ability to suppress the displacement of the powertrain and improve the suspension vibration isolation rate.

[0014] In some embodiments of the present application, the elastic extrusion member includes a main body, a liquid storage portion, a first extrusion portion and a first buffer portion. The liquid storage portion is connected to the first extrusion portion and the inner core, and has the liquid storage cavity or the first liquid storage sub-cavity; the first extrusion portion is connected to a side of the main body away from the liquid storage portion; the first buffer portion is connected to a side of the main body away from the first extrusion portion, and the first buffer portion is in the liquid storage cavity and abuts against a cavity wall of the liquid storage cavity away from the main body.

[0015] Based on the above embodiment, the liquid storage portion has a liquid storage cavity or a second liquid storage sub-cavity to realize the opening of the liquid storage cavity on the elastic extrusion member. The first extrusion portion is used to abut the elastic member to make the main body and the first extrusion portion collapse toward the liquid storage cavity. The first buffer portion can reduce the vibration transmitted from the subframe to the powertrain.

[0016] In some embodiments of the present application, the inner core has a connecting cavity connected to the liquid storage cavity or the first liquid storage sub-cavity, and the liquid storage portion is at least partially located in the connecting cavity and fixedly connected to the cavity wall of the connecting cavity.

[0017] Based on the above embodiments, the liquid storage part is at least partially located in the connecting cavity and fixedly connected to the cavity wall of the connecting cavity, thereby increasing the connection area between the elastic extrusion part and the inner core, that is, enhancing the connection strength between the liquid storage part and the inner core.

[0018] In some embodiments of the present application, the inner core has an injection cavity connected to the liquid storage cavity or the first liquid storage sub-cavity; the suspension limiting structure also includes a sealing member, which is arranged in the injection cavity and connected to the cavity wall of the injection cavity.

[0019] Based on the above embodiment, after the suspension limiting structure is assembled, non-Newtonian fluid is injected into the liquid storage cavity through the liquid injection cavity, and then the liquid injection cavity is blocked by the blocking member to seal the non-Newtonian fluid in the liquid storage cavity.

[0020] In some embodiments of the present application, the first buffer portion has two connecting surfaces disposed opposite to each other, the two connecting surfaces are disposed adjacent to the main body and fixedly connected to the cavity wall of the buffer cavity, the first buffer portion has a connecting cavity, and the connecting cavity has connecting openings formed on the two connecting surfaces;

[0021] The main body has a buffer cavity.

[0022] Based on the above embodiments, when the liquid storage cavity is opened on the inner core, the connection relationship between the first buffer portion and the inner core is strengthened; when the liquid storage cavity is opened on the liquid storage portion, the connection relationship between the first buffer portion and the liquid storage portion is strengthened; when the first liquid storage sub-cavity is opened on the inner core and the second liquid storage sub-cavity is opened on the liquid storage portion, the connection relationship between the first buffer portion and the liquid storage portion and the connection relationship between the first buffer portion and the inner core are strengthened;

[0023] The thickness of the main body where the buffer cavity is opened will be reduced. After the non-Newtonian fluid is subjected to force, the non-Newtonian fluid will more easily cause the main body to deform. In this way, the non-Newtonian fluid will cause a greater deformation of the main body when subjected to force. At this time, the non-Newtonian fluid is subjected to force slowly and produces smaller resistance, which has the effect of better improving the suspension vibration isolation rate.

[0024] In some embodiments of the present application, the elastic member includes a first connecting portion, a second connecting portion, a second extrusion portion and two second buffer portions arranged oppositely, the first connecting portion having a accommodating cavity, the accommodating cavity forming an avoidance opening on the surface of the first connecting portion, the inner core being arranged in the accommodating cavity, the main body portion and the first extrusion portion being located outside the first connecting portion through the avoidance opening; the second connecting portion is configured as an annular structure, which is arranged around the circumference of the first connecting portion and has a gap between it and the first connecting portion, and the outer side of the second connecting portion is connected to the outer support member; the two second buffer portions arranged oppositely are symmetrically arranged with respect to the expansion and contraction direction of the first extrusion portion, the two ends of the second buffer portion are respectively connected to the first connecting portion and the second connecting portion, and along the expansion and contraction direction of the first extrusion portion, the second buffer portion gradually extends from one end connected to the first connecting portion to one end connected to the second connecting portion toward the first extrusion portion, the second extrusion portion is connected to the outer edge of the first connecting portion away from the first extrusion portion, and a gap is left between the second extrusion portion and the second connecting portion.

[0025] Based on the above embodiment, the inner core is arranged in the accommodating cavity to realize the connection between the inner core and the elastic member, and the main body and the first extrusion portion are located on the outside of the first connection portion through the avoidance opening, so that when the inner core moves relative to the outer support member, the second connection portion can abut against the first extrusion portion, and then the first extrusion portion and the main body collapse toward the liquid storage cavity to squeeze the non-Newtonian fluid in the liquid storage cavity. When the inner core moves relative to the outer support member, the inner core drives the first connection portion to move toward the second connection portion along the telescopic direction of the first extrusion portion. At this time, the second buffer portion can reduce the relative displacement between the first connection portion and the second connection portion and reduce the vibration transmitted from the sub-frame to the powertrain. The second extrusion portion is used to abut the second connection portion, that is, when the outer support member moves relative to the inner core, the second connection portion is deformed, and the second extrusion portion is deformed after contacting the second connection portion to reduce the vibration transmitted from the sub-frame to the powertrain.

[0026] In a second aspect, an embodiment of the present application provides a vehicle, the vehicle comprising a powertrain, a subframe and the suspension limiting structure as described above; the powertrain is connected to the outer support member; and the subframe is connected to the inner core.

[0027] Based on the vehicle in the embodiment of the present application, since it has the above-mentioned suspension limit structure, when the vehicle is under conditions where the load increases instantaneously (for example, sudden acceleration of the vehicle, etc.), the suspension limit structure can generate greater resistance and suppress the displacement of the powertrain. When the vehicle is under conditions where the working force is relatively small (for example, vehicle cruising, etc.), the suspension limit structure can generate less resistance and improve the suspension vibration isolation rate, so that the vehicle can meet the driving requirements under various working conditions.

[0028] Based on the suspension limiting structure of the embodiment of the present application, the outer support is connected to the powertrain to realize the connection between the suspension limiting structure and the powertrain, and the inner core is connected to the subframe to realize the connection between the suspension limiting structure and the subframe. In this way, when a relative displacement occurs between the powertrain and the subframe of the vehicle, the powertrain causes the inner core to have a tendency to move relative to the outer support. At this time, after the elastic member is deformed by the external force of the outer support or the inner core, the inner core is displaced relative to the outer support. If the deformation of the elastic member is sufficient to make the elastic member abut against the elastic extrusion member, the elastic extrusion member is deformed by the force to squeeze the non-Newtonian fluid in the liquid storage chamber. According to the non-Newtonian fluid "when encountering strong The non-Newtonian fluid has the property of shear thickening or shear thinning. When the force is applied slowly, the resistance generated by the non-Newtonian fluid is small, and when the force is applied violently, the resistance generated will be very large, and even solid form may appear. Then, when the vehicle is under the condition of instantaneous increase in load (for example, sudden acceleration of the vehicle, etc.), the non-Newtonian fluid is subjected to violent force and produces greater resistance, which inhibits the displacement of the powertrain. When the vehicle is under the condition of small working force (for example, cruising, etc.), the non-Newtonian fluid is subjected to slow force and produces less resistance, which improves the suspension vibration isolation rate, so that the suspension limit structure can adjust the stiffness automatically according to the vehicle condition to meet various working conditions of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0030] Figure 1 It is a structural schematic diagram of a suspension limiting structure in an embodiment of the present application;

[0031] Figure 2 This is a schematic diagram of the structure of the inner core in one embodiment of the present application;

[0032] Figure 3 It is a schematic structural diagram of an elastic extrusion member in an embodiment of the present application;

[0033] Figure 4 for Figure 3 A schematic structural diagram of the elastic extrusion member from another perspective shown in FIG.

[0034] Figure 5 It is a schematic structural diagram of an elastic extrusion member in another embodiment of the present application;

[0035] Figure 6 for Figure 5 A schematic structural diagram of the elastic extrusion member from another perspective shown in FIG.

[0036] Figure 7 is a schematic structural diagram of an inner core in another embodiment of the present application;

[0037] Figure 8 A schematic diagram of the structure of an elastic extrusion member in some embodiments of the present application;

[0038] Fig. 9 This is a schematic structural diagram of an inner core in yet another embodiment of the present application;

[0039] Fig.10 Schematic diagram of the structure of an elastic member in an embodiment of the present application.

[0040] : 10, outer support member; 11, main body; 12, connecting ear; 20, elastic member; 21, first connecting part; 211, accommodating chamber; 212, avoidance opening; 22, second connecting part; 23, second buffer part; 24, second extrusion part; 30, inner core; 31, extrusion port; 32, connecting chamber; 33, liquid injection chamber; 34, weight reduction chamber; 35, assembly chamber; 40, elastic extrusion member; 41, main body; 411, buffer chamber; 42, first extrusion part; 43, first buffer part; 431, connecting surface; 432, communicating chamber; 44, liquid storage part; 50, liquid storage chamber; 51, first liquid storage sub-chamber; 52, second liquid storage sub-chamber; a, telescopic direction of the first extrusion part. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0042] In the relevant technical field, when the vehicle is under high-load conditions such as sudden acceleration or going over speed bumps, the powertrain suspension needs to provide greater rigidity to limit the displacement of the powertrain, so as to make the vehicle driving feel more compact and avoid interference with surrounding parts due to insufficient powertrain limitation; under some conditions with smaller loads such as high-speed cruising, the powertrain suspension needs to provide less rigidity and improve the vibration isolation capability of the suspension to effectively suppress the transmission of external vibration and noise to the cab, thereby improving the comfort of the entire vehicle. At present, the limiting structure of the automobile powertrain suspension is usually a rubber bumper, but the driving conditions of the vehicle are complex, and the limiting structure of the rubber bumper cannot meet the requirements of various conditions.

[0043] To solve the above technical problems, please refer to Figure 1 As shown, the first aspect of the present application proposes a suspension limit structure, which can automatically adjust its own stiffness according to different vehicle conditions to meet different vehicle working conditions.

[0044] In the first aspect, the present application embodiment provides a suspension limit structure, please refer to Figure 1 as well as Figure 2 As shown, the suspension limiting structure includes an outer support member 10, an elastic member 20, an inner core 30 and an elastic extrusion member 40, the outer support member 10 is connected to the power assembly; the elastic member 20 is connected to the outer support member 10; the inner core 30 is connected to the elastic member 20; the elastic extrusion member 40 is connected to the inner core 30, and forms a liquid storage chamber 50 with the inner core 30, and the liquid storage chamber 50 contains a non-Newtonian fluid; after the outer support member 10 is subjected to an external force, the elastic member 20 is forced to deform so that the elastic member 20 presses against the elastic extrusion member 40, and the elastic extrusion member 40 is deformed so that the non-Newtonian fluid in the liquid storage chamber 50 is pressurized.

[0045] The outer support member 10 is connected to the powertrain to realize the connection between the suspension limit structure and the powertrain. Specifically, the outer support member 10 is connected to the engine in the powertrain; please refer to Figure 1 As shown, in some embodiments of the present application, the outer support member 10 includes a main body 11 and a connecting ear 12, the main body 11 has a mounting cavity, the elastic member 20 is disposed in the mounting cavity and fixedly connected to the cavity wall of the mounting cavity, and the connecting ear 12 is connected to the main body 11 and connected to the engine through bolts. In a specific embodiment of the present application, the main body 11 is configured as a rectangular frame structure, the number of the connecting ears 12 is two, the two connecting ears 12 are connected to the same side wall of the main body 11, and the two connecting ears 12 are spaced apart.

[0046] The elastic member 20 is connected to the outer support member 10 and the inner core 30. When the inner core 30 is subjected to external force, it is deformed so that the outer support member 10 moves relative to the inner core 30. It can be understood that before the elastic member 20 presses against the elastic extrusion member 40, the elastic member 20 can buffer the movement of the outer support member 10 relative to the inner core 30 to reduce the vibration transmitted from the subframe to the powertrain.

[0047] The inner core 30 is connected to the subframe and the elastic member 20, please refer to Figure 2 As shown, in some embodiments of the present application, the inner core 30 has an assembly cavity 35, and bolts are simultaneously passed through the assembly cavity 35 and the sub-frame to achieve a fixed connection between the inner core 30 and the sub-frame. In addition, in order to reduce the weight of the suspension limit structure, please refer to Figure 2 As shown, in some embodiments of the present application, the inner core 30 has a weight-reducing cavity 34 , and the shape and size of the weight-reducing cavity 34 are not limited in the embodiments of the present application, but it should be ensured that the weight-reducing cavity 34 does not affect the structural strength of the inner core 30 .

[0048] The liquid storage chamber 50 is used to accommodate non-Newtonian fluid. In the embodiment of the present application, there is no limitation on the size and shape of the liquid storage chamber 50. A liquid storage chamber 50 of any shape and size can accommodate non-Newtonian fluid; however, in order to balance the force on the Newtonian fluid when the elastic extrusion member 40 is deformed, in a specific embodiment of the present application, the liquid storage chamber 50 is configured as a rectangular cavity.

[0049] Based on the suspension limiting structure of the embodiment of the present application, the outer support 10 is connected to the powertrain to realize the connection between the suspension limiting structure and the powertrain, and the inner core 30 is connected to the subframe to realize the connection between the suspension limiting structure and the subframe. In this way, when a relative displacement occurs between the powertrain and the subframe of the vehicle, the powertrain causes the inner core 30 to have a tendency to move relative to the outer support 10. At this time, the elastic member 20 is deformed by the external force of the outer support 10 or the inner core 30, and the inner core 30 is displaced relative to the outer support 10. If the deformation of the elastic member 20 is sufficient to make the elastic member 20 abut against the elastic extrusion member 40, the elastic extrusion member 40 is deformed by the force to squeeze the non-Newtonian in the liquid storage chamber 50. Fluid, according to the characteristics of non-Newtonian fluid "strong when encountering strong forces, weak when encountering weak forces", that is, non-Newtonian fluid has the properties of shear thickening or shear thinning. Non-Newtonian fluid generates less resistance when the force is slowly applied, and generates very large resistance when the force is violently applied, and may even appear in the form of a solid. Then, when the vehicle is under conditions where the load increases instantaneously (for example, sudden acceleration of the vehicle, etc.), the non-Newtonian fluid is subjected to violent force and generates greater resistance, thereby suppressing the displacement of the powertrain. When the vehicle is under conditions where the force is relatively small (for example, cruising, etc.), the non-Newtonian fluid is subjected to slow force and generates less resistance, thereby improving the suspension vibration isolation rate, so that the suspension limit structure can automatically adjust the stiffness according to the vehicle condition to meet various vehicle conditions.

[0050] Please refer to Figure 2 , Figure 3 as well as Figure 4 As shown, in some embodiments of the present application, the inner core 30 has a liquid storage cavity 50, and the liquid storage cavity 50 forms an extrusion port 31 on the surface of the inner core 30, and the elastic extrusion member 40 covers the extrusion port 31. In this way, the liquid storage cavity 50 can be processed on the inner core 30 which is a rigid body by turning or drilling, etc. The process is simple, and because the inner core 30 is a rigid body, the inner core 30 will not deform when the non-Newtonian fluid is pressurized, and the non-Newtonian fluid can have a better extrusion effect. At this time, the non-Newtonian fluid can generate greater resistance when subjected to force, and the rear limit suspension structure has better suppression of powertrain displacement.

[0051] Please refer to Figure 3As shown, at this time, the elastic extrusion member 40 includes a main body 41, a first extrusion portion 42 and a first buffer portion 43. The main body 41 is connected to the inner core 30 and covers the extrusion port 31; the first extrusion portion 42 is connected to the side of the main body 41 away from the inner core 30; the first buffer portion 43 is connected to the side of the main body 41 away from the first extrusion portion 42, and the first buffer portion 43 is in the liquid storage cavity 50 and abuts against the cavity wall of the liquid storage cavity 50 away from the main body 41. Or, when the first extrusion portion 42 collapses into the liquid storage cavity 50, the first buffer portion 43 can abut against the cavity wall of the liquid storage cavity 50 away from the main body 41.

[0052] The main body 41 is connected to the inner core 30 and covers the extrusion opening 31. Since the main body 41 needs to be deformed, in some embodiments of the present application, the main body 41 is made of an elastic material, such as rubber, latex or silicone. In combination with the above-mentioned liquid storage chamber 50 being set as a rectangular cavity, the corresponding extrusion opening 31 in the embodiment of the present application is a rectangular opening. In order to make the main body 41 cover the extrusion opening 31, in some embodiments of the present application, the main body 41 is set as a rectangular block. In this way, the elastic member 20 squeezes the first extrusion portion 42 to make the main body 41 and the first extrusion portion 42 collapse toward the liquid storage chamber 50 to squeeze the non-Newtonian fluid in the liquid storage chamber 50. In addition, after the main body 41 and the first extrusion portion 42 collapse into the liquid storage chamber 50, the first buffer portion 43 is deformed to buffer the external force transmitted from the support member to the inner core 30, that is, the suspension limiting structure simultaneously reduces the vibration transmitted from the subframe to the powertrain through the first buffer portion 43 and the non-Newtonian fluid in the liquid storage chamber 50, so as to further enhance the vibration reduction capacity of the suspension limiting structure.

[0053] The first extrusion portion 42 is connected to a side of the main body 41 away from the inner core 30, and is used to abut the elastic member 20 to deform itself and the main body 41. In the embodiments of the present application, there is no limitation on the shape and size of the first extrusion portion 42, as long as the first extrusion portion 42 can be deformed after being pressed by the elastic member 20. In some embodiments of the present application, along the expansion and contraction direction a of the first extrusion portion, the orthographic projection of the first extrusion portion 42 on the inner core 30 partially overlaps with the extrusion port 31, so that the first extrusion portion 42 can collapse into the liquid storage chamber 50 to better extrude the non-Newtonian fluid in the liquid storage chamber 50; as for the material of the first extrusion portion 42, in some embodiments of the present application, the first extrusion portion 42 is made of an elastic material, for example, rubber, latex or silicone, and the first extrusion portion 42 is integrally formed with the main body.

[0054] The first buffer portion 43 is connected to the main body 41 and abuts against the cavity wall of the liquid storage cavity 50 away from the main body 41, that is, when the first extrusion portion 42 and the main body collapse toward the liquid storage cavity 50, the first buffer portion 43 is deformed to reduce the volume of the first extrusion portion 42 and the main body collapsed into the liquid storage cavity 50. Since, at this time, the first extrusion portion 42 abuts against the elastic member 20 and the elastic member 20 abuts against the outer support member 10, the first buffer portion 43 can reduce the vibration transmitted from the subframe to the powertrain; in order to balance the ratio of the first buffer portion 43 and the non-Newtonian fluid, in some embodiments of the present application, the volume of the first buffer portion 43 is 1 / 3 of the volume of the liquid storage cavity 50; as for the material of the first buffer portion 43, in some embodiments of the present application, the first buffer portion 43 is made of elastic material, for example, rubber, latex or silicone, and the first buffer portion 43, the first extrusion portion 42 and the main body are integrally formed.

[0055] Please refer to Figure 5 as well as Figure 6 As shown, in other embodiments of the present application, the elastic extrusion member 40 has a liquid storage chamber 50, so that the elastic extrusion member 40 deforms to extrude the non-Newtonian fluid, but when the non-Newtonian fluid is subjected to force, the elastic extrusion member 40 produces a larger deformation, that is, at this time, the non-Newtonian fluid is subjected to force slowly to produce smaller resistance, which has a better effect of improving the suspension vibration isolation rate.

[0056] Please refer to Figure 5 as well as Figure 6 As shown, at this time, the elastic extrusion member 40 includes a main body 41, a liquid storage portion 44, a first extrusion portion 42 and a first buffer portion 43. The liquid storage portion 44 is connected to the first extrusion portion 42 and the inner core 30, and has a liquid storage cavity 50; the first extrusion portion 42 is connected to the side of the main body 41 away from the liquid storage portion 44; the first buffer portion 43 is connected to the side of the main body 41 away from the first extrusion portion 42, and the first buffer portion 43 is in the liquid storage cavity 50 and abuts against the cavity wall of the liquid storage cavity 50 away from the main body 41.

[0057] The definitions of the main body portion 41 , the first extrusion portion 42 and the first buffer portion 43 are the same as those in the above-mentioned embodiment in which the inner core 30 has the liquid storage cavity 50 .

[0058] The liquid storage portion 44 is used to open a liquid storage cavity 50. In the embodiments of the present application, there is no limitation on the shape and size of the liquid storage portion 44, as long as the liquid storage portion 44 can open the liquid storage cavity 50; in combination with the above-mentioned liquid storage cavity 50 being set as a rectangular cavity, in some embodiments of the present application, the liquid storage portion 44 is set as a rectangular block. It can be understood that the liquid storage portion 44 can be set to any shape; as for the material of the liquid storage portion 44, in some embodiments of the present application, the liquid storage portion 44 is made of elastic material, for example, rubber, latex or silicone.

[0059] Please refer to Figure 5 , Figure 7 as well as Figure 8 As shown, in some other embodiments of the present application, the inner core 30 has a first liquid storage sub-chamber 51; the elastic extrusion member 40 has a second liquid storage sub-chamber 52 connected to the first liquid storage sub-chamber 51; the liquid storage chamber 50 includes the first liquid storage sub-chamber 51 and the second liquid storage sub-chamber 52. In this way, the liquid storage chamber 50 is composed of the first liquid storage sub-chamber 51 opened on the inner core 30 and the second liquid storage sub-chamber 52 opened on the elastic extrusion member 40. At this time, the resistance generated by the non-Newtonian fluid in the liquid storage chamber 50 after being subjected to force is appropriate, and the suspension limiting structure has a good ability to suppress the displacement of the powertrain and improve the suspension vibration isolation rate.

[0060] Please refer to Figure 5 , Figure 7 as well as Figure 8 As shown, at this time, the elastic extrusion member 40 includes a main body 41, a liquid storage portion 44, a first extrusion portion 42 and a first buffer portion 43. The liquid storage portion 44 is connected to the main body 41 and the inner core 30, and has a second liquid storage sub-cavity 52; the first extrusion portion 42 is connected to the side of the main body 41 away from the liquid storage portion 44; the first buffer portion 43 is connected to the side of the main body 41 away from the first extrusion portion 42, and the first buffer portion 43 is in the liquid storage cavity 50 and abuts against the cavity wall of the liquid storage cavity 50 away from the main body 41.

[0061] The definitions of the main body portion 41 , the first extrusion portion 42 and the first buffer portion 43 are the same as those in the above-mentioned embodiment in which the inner core 30 has the liquid storage cavity 50 .

[0062] The liquid storage portion 44 is used to open a second liquid storage sub-cavity 52. ​​In the embodiments of the present application, there is no limitation on the shape and size of the liquid storage portion 44, as long as the liquid storage portion 44 can open the second liquid storage sub-cavity 52. ​​As for the material of the liquid storage portion 44, in some embodiments of the present application, the liquid storage portion 44 is made of an elastic material, such as rubber, latex or silicone.

[0063] In combination with the above-mentioned liquid storage chamber 50 being set as a rectangular cavity, in some embodiments of the present application, the second liquid storage sub-cavity 52 and the first liquid storage sub-cavity 51 are both set as rectangular cavities, and the first liquid storage sub-cavity 51 forms a first connecting opening on the surface of the inner core 30, and the second liquid storage sub-cavity 52 forms a second connecting opening on the side of the liquid storage portion 44 away from the main body portion 41, and the first liquid storage sub-cavity 51 and the second liquid storage sub-cavity 52 are connected via the first connecting opening and the second connecting opening.

[0064] Please refer to Figure 2 , Figure 7 or Fig. 9As shown, in some embodiments of the present application, the inner core 30 has a connecting cavity 32 connected to the liquid storage cavity 50 or the first liquid storage sub-cavity 51, and the liquid storage portion 44 is at least partially located in the connecting cavity 32 and fixedly connected to the cavity wall of the connecting cavity 32. In this way, the liquid storage portion 44 is partially located in the connecting cavity 32 and fixedly connected to the cavity wall of the connecting cavity 32, which increases the connection area between the elastic extrusion member 40 and the inner core 30, that is, enhances the connection strength between the liquid storage portion 44 and the inner core 30. It can be understood that this embodiment is applicable to the three embodiments in which the inner core 30 has a liquid storage cavity 50, the elastic extrusion member 40 has a liquid storage cavity 50, and the inner core 30 has a first liquid storage sub-cavity 51 and the elastic extrusion member 40 has a second liquid storage sub-cavity 52.

[0065] The connecting cavity 32 is used to accommodate at least part of the liquid storage part 44. It can be understood that the larger the connection area between the liquid storage part 44 and the connecting cavity 32, the higher the connection strength between the inner core 30 and the elastic extrusion part 40. In combination with the above-mentioned liquid storage part 44 being set as a rectangular block, in some embodiments of the present application, the connecting cavity 32 is set as a rectangular cavity; it can be understood that when the liquid storage part 44 is set to other shapes, the connecting cavity 32 is set to the same shape as the shape of the liquid storage part 44, and the part of the liquid storage part 44 in the connecting cavity 32 is set in contact with the cavity wall of the connecting cavity 32. In order to maximize the connection strength between the inner core 30 and the elastic extrusion part 40, in some embodiments of the present application, the liquid storage part 44 is completely in the connecting cavity 32, so that the connection strength between the inner core 30 and the elastic extrusion part 40 reaches the highest.

[0066] To facilitate the processing and manufacturing of the elastic extrusion part 40, in some embodiments of the present application, the main body 41, the first extrusion part 42 and the first buffer part 43 are integrally arranged, and the liquid storage part 44 is separately arranged and connected to the integrally arranged main body 41, the first extrusion part 42 and the first buffer part 43 through a vulcanization process after the liquid storage cavity 50 or the second liquid storage sub-cavity 52 is processed.

[0067] Please refer to Figure 2 , Figure 7 or Fig. 9 As shown, in some embodiments of the present application, the inner core 30 has a liquid injection cavity 33 connected to the liquid storage cavity 50 or the first liquid storage sub-cavity 51, and the suspension limiting structure also includes a plugging member, which is arranged in the liquid injection cavity 33 and connected to the cavity wall of the liquid injection cavity 33. In this way, after the suspension limiting structure is assembled, the non-Newtonian fluid is injected into the liquid storage cavity 50 through the liquid injection cavity 33, and then the liquid injection cavity 33 is blocked by the plugging member to seal the non-Newtonian fluid in the liquid storage cavity 50. It can be understood that this embodiment is applicable to the three embodiments in which the inner core 30 has a liquid storage cavity 50, the elastic extrusion member 40 has a liquid storage cavity 50, and the inner core 30 has a first liquid storage sub-cavity 51 and the elastic extrusion member 40 has a second liquid storage sub-cavity 52.

[0068] The injection cavity 33 is used to inject the non-Newtonian fluid into the liquid storage cavity 50. In some embodiments of the present application, the injection cavity 33 is formed with an injection port on any side of the inner core 30. It can be understood that the injection cavity 33 can be a flow channel with a cross-section of any shape, which can inject the non-Newtonian fluid into the liquid storage cavity 50; wherein the cross-section is a cross-sectional shape perpendicular to the axis, for example, the cross-section of a cylinder is a circle.

[0069] The sealing piece is used to seal the injection cavity 33. In combination with the above-mentioned injection cavity 33, an injection port is formed on any side of the inner core 30. After the non-Newtonian fluid is injected into the liquid storage cavity 50 through the injection cavity 33, the sealing piece is placed into the injection cavity 33 from the injection port, and the sealing piece and the cavity wall of the injection cavity 33 are interference fit; wherein, the interference fit depends on the interference value of the shaft and the hole. After assembly, elastic pressure is generated between the surfaces of the parts, thereby obtaining a tight connection. At this time, the tolerance band of the hole is below the tolerance band of the shaft; in the embodiment of the present application, the volume of the sealing piece is reduced by cold shrinking the sealing piece, and then the sealing piece is assembled into the injection cavity 33 through the injection port. After the sealing piece returns to normal temperature, the volume of the sealing piece is restored to form an interference fit with the cavity wall of the injection cavity 33.

[0070] To strengthen the connection between the first buffer portion 43 and the liquid storage portion 44 or the inner core 30, please refer to Figure 3 as well as Figure 4 or Figure 5 as well as Figure 6 or Figure 5 as well as Figure 8 As shown, in some embodiments of the present application, the first buffer portion 43 has two connecting surfaces 431 arranged opposite to each other, the two connecting surfaces 431 are arranged adjacent to the main body 41 and fixedly connected to the cavity wall of the buffer cavity 411, and the first buffer portion 43 has a connecting cavity 432, and the connecting cavity 432 has connecting ports formed on the two connecting surfaces 431; in this way, when the liquid storage cavity 50 is opened on the inner core 30, the connection relationship between the first buffer portion 43 and the inner core 30 is strengthened, and when the liquid storage cavity 50 is opened on the liquid storage portion 44, the connection relationship between the first buffer portion 43 and the liquid storage portion 44 is strengthened; when the first liquid storage sub-cavity 51 is opened on the inner core 30 and the second liquid storage sub-cavity 52 is opened on the liquid storage portion 44, the connection relationship between the first buffer portion 43 and the liquid storage portion 44 and the connection relationship between the first buffer portion 43 and the inner core 30 are strengthened.

[0071] The connecting surface 431 is used to connect with the cavity wall of the connecting cavity 32. In combination with the above-mentioned liquid storage cavity 50 being set as a rectangular cavity, in some embodiments of the present application, the first buffer portion 43 is set as a rectangular block corresponding to the liquid storage cavity 50, that is, the connecting surface 431 is a rectangular surface. It can be understood that the first buffer portion 43 can be set to any shape, as long as the two connecting surfaces 431 opposite to each other of the first buffer portion 43 can be connected to the cavity wall of the liquid storage cavity 50. At this time, the shape of the connecting surface 431 can be any shape, as long as the connecting surface 431 can be connected to the cavity wall of the liquid storage cavity 50.

[0072] After the two opposite connecting surfaces 431 of the first buffer portion 43 are connected to the cavity wall of the liquid storage cavity 50, the first buffer portion 43 divides the liquid storage cavity 50 into two parts. At this time, after a connecting cavity 432 is opened on the first buffer portion 43, the connecting cavity 432 reconnects the two parts separated by the first buffer portion 43 so that the non-Newtonian fluid can flow freely in the liquid storage cavity 50. The connecting cavity 432 and the connecting port in the embodiment of the present application can be of any shape or size, and the embodiment of the present application does not limit this.

[0073] In some embodiments of the present application, the main body 41 has a buffer cavity 411, and the thickness of the main body 41 at the position where the buffer cavity 411 is opened will be reduced. After the non-Newtonian fluid is subjected to force, the non-Newtonian fluid is more likely to cause the main body 41 to deform more easily. In this way, when the non-Newtonian fluid is subjected to force, the main body 41 will produce a greater deformation. At this time, the non-Newtonian fluid is subjected to force slowly to produce less resistance, which has a better effect of improving the suspension vibration isolation rate. It can be understood that this embodiment is applicable to the three embodiments in which the inner core 30 has a liquid storage cavity 50, the elastic extrusion member 40 has a liquid storage cavity 50, and the inner core 30 has a first liquid storage sub-cavity 51 and the elastic extrusion member 40 has a second liquid storage sub-cavity 52.

[0074] Please refer to Figure 10. In some embodiments of the present application, the elastic member 20 includes a first connecting portion 21, a second connecting portion 22, and two second buffer portions 23 arranged opposite to each other. The first connecting portion 21 has a receiving cavity 211. The receiving cavity 211 forms an avoidance opening 212 on the surface of the first connecting portion 21. The inner core 30 is arranged in the receiving cavity 211. The main body 41 and the first extrusion portion 42 are located outside the first connecting portion 21 through the avoidance opening 212. The second connecting portion 22 is configured as an annular structure, which is arranged around the first connecting portion 21 and has a gap with the first connecting portion 21. The second connecting portion 22 is arranged in an annular structure. The outer side of the connecting portion 22 is connected to the outer support member 10; the two second buffer portions 23 are arranged opposite to each other and are symmetrically arranged with respect to the expansion and contraction direction a of the first extrusion portion, and the two ends of the second buffer portion 23 are respectively connected to the first connection portion 21 and the second connection portion 22, and along the expansion and contraction direction a of the first extrusion portion, the second buffer portion 23 gradually extends from the end connected to the first connection portion 21 to the end connected to the second connection portion 22 toward the first extrusion portion 42; the second extrusion portion 24 is connected to the outer edge of the first connection portion 21 away from the first extrusion portion 42, and a gap is left between the second extrusion portion 24 and the second connection portion 22. It can be understood that this embodiment is applicable to the three embodiments in which the inner core 30 has a liquid storage cavity 50, the elastic extrusion member 40 has a liquid storage cavity 50, and the inner core 30 has a first liquid storage sub-cavity 51 and the elastic extrusion member 40 has a second liquid storage sub-cavity 52.

[0075] The first connecting portion 21 is used to connect with the inner core 30, and the inner core 30 is disposed in the accommodating cavity 211 and fixedly connected to the cavity wall of the accommodating cavity 211. In combination with the above-mentioned inner core 30 being set as a rectangular block, in some embodiments of the present application, the accommodating cavity 211 is set as a rectangular cavity, and in order to facilitate the assembly of the inner core 30 into the accommodating cavity 211, the accommodating cavity 211 is formed with an assembly opening on the surface of the inner core 30, and the inner core 30 is assembled into the accommodating cavity 211 via the assembly opening.

[0076] The second connecting portion 22 is used to connect to the outer support member 10, and is combined with the above-mentioned outer support member 10 including a main body portion 11 and a connecting ear 12. The main body portion 11 has an installation cavity, the elastic member 20 is arranged in the installation cavity and is fixedly connected to the cavity wall of the installation cavity, the connecting ear 12 is connected to the main body portion 11, and is connected to the engine through bolts. In some embodiments of the present application, the second connecting portion 22 is in the installation cavity and is fixedly connected to the cavity wall of the installation cavity.

[0077] The second buffer portion 23 is used to connect the first connection portion 21 and the second connection portion 22. When the inner core 30 is subjected to an external force and forces the first connection portion 21 to approach the second connection portion 22 along the telescopic direction a of the first extrusion portion, the second buffer portion 23 is deformed to reduce the moving distance of the second connection portion 22 along the telescopic direction of the first extrusion portion 42, that is, the suspension limiting structure reduces the vibration transmitted from the subframe to the powertrain through the first buffer portion 43, the second buffer portion 23 and the non-Newtonian fluid. Specifically, the vibration transmitted from the subframe to the powertrain is firstly damped by the second buffer portion 23, and then simultaneously damped by the first buffer portion 43 and the non-Newtonian fluid.

[0078] The second extrusion portion 24 is used to abut the second connection portion 22 to reduce the vibration transmitted from the subframe to the powertrain. In the embodiments of the present application, there is no limitation on the shape and size of the second extrusion portion 24. As long as the inner core 30 moves relative to the outer support member 10 along the telescopic direction a of the first extrusion portion, the second extrusion portion 24 can abut the second connection portion 22. In some embodiments of the present application, the second extrusion portion 24 is made of an elastic material, such as rubber, latex or silicone.

[0079] In a second aspect, an embodiment of the present application provides a vehicle, the vehicle comprising a powertrain, a subframe and the above suspension limiting structure; the powertrain is connected to the outer support 10 ; the subframe is connected to the inner core 30 .

[0080] Based on the vehicle in the embodiment of the present application, since it has the above-mentioned suspension limit structure, when the vehicle is under conditions where the load increases instantaneously (for example, sudden acceleration of the vehicle, etc.), the suspension limit structure can generate greater resistance and suppress the displacement of the powertrain. When the vehicle is under conditions where the working force is relatively small (for example, vehicle cruising, etc.), the suspension limit structure can generate less resistance and improve the suspension vibration isolation rate, so that the vehicle can meet the driving requirements under various working conditions.

[0081] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of this application, it should be understood that if the terms "upper", "lower", "left", "right", etc. indicate an orientation or position relationship based on the orientation or position relationship shown in the drawings, it is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0082] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A suspension limiting structure, characterized in that: include: an outer support member connected to the powertrain; an elastic member connected to the outer support member; An inner core connected to the elastic member and the auxiliary frame; an elastic extrusion member connected to the inner core and forming a liquid storage cavity with the inner core, wherein the liquid storage cavity contains a non-Newtonian fluid; The elastic extrusion member can at least partially collapse into the liquid storage chamber to squeeze the non-Newtonian fluid in the liquid storage chamber; Wherein, the inner core has the liquid storage cavity, and the liquid storage cavity forms an extrusion opening on the surface of the inner core; the elastic extrusion piece covers the extrusion opening; The elastic extrusion member comprises: A main body connected to the inner core and covering the extrusion port; A first extrusion portion connected to a side of the main body away from the inner core; a first buffer portion connected to a side of the main body away from the first extrusion portion, the first buffer portion being in the liquid storage cavity, and being able to abut against a cavity wall of the liquid storage cavity away from the main body when the first extrusion portion collapses into the liquid storage cavity; or The first buffer portion is located in the liquid storage cavity and abuts against a cavity wall of the liquid storage cavity away from the main body portion.

2. A suspension limiting structure, characterized in that: include: an outer support member connected to the powertrain; an elastic member connected to the outer support member; An inner core connected to the elastic member and the auxiliary frame; an elastic extrusion member connected to the inner core and forming a liquid storage cavity with the inner core, wherein the liquid storage cavity contains a non-Newtonian fluid; The elastic extrusion member can at least partially collapse into the liquid storage chamber to squeeze the non-Newtonian fluid in the liquid storage chamber; Wherein, the elastic extrusion member has the liquid storage cavity; or, The inner core has a first liquid storage sub-cavity; the elastic extrusion piece has a second liquid storage sub-cavity connected to the first liquid storage sub-cavity; the liquid storage cavity includes the first liquid storage sub-cavity and the second liquid storage sub-cavity; The elastic extrusion member comprises: Main body; A liquid storage part, connected to the main body and the inner core, having the liquid storage cavity or the second liquid storage sub-cavity; A first extrusion portion connected to a side of the main body away from the liquid storage portion; The first buffer portion is connected to a side of the main body away from the first extrusion portion. The first buffer portion is located in the liquid storage cavity and abuts against a cavity wall of the liquid storage cavity away from the main body.

3. The suspension limiting structure according to claim 2, characterized in that: The inner core has a connecting cavity connected to the liquid storage cavity or the first liquid storage sub-cavity, and the liquid storage portion is at least partially located in the connecting cavity and fixedly connected to the cavity wall of the connecting cavity.

4. The suspension limiting structure according to claim 1, characterized in that: The inner core has a liquid injection cavity connected to the liquid storage cavity; The suspension limiting structure also includes: The blocking member is arranged in the liquid injection cavity and connected to the cavity wall of the liquid injection cavity.

5. The suspension limiting structure according to claim 2, characterized in that: When the elastic extrusion member has the liquid storage cavity, the inner core has a liquid injection cavity connected to the liquid storage cavity, and the suspension limiting structure further includes a blocking member, which is arranged in the liquid injection cavity and connected to the cavity wall of the liquid injection cavity; When the inner core has a first liquid storage sub-cavity, the elastic extrusion member has a second liquid storage sub-cavity connected to the first liquid storage sub-cavity, and the liquid storage cavity includes the first liquid storage sub-cavity and the second liquid storage sub-cavity, the inner core has an injection cavity connected to the first liquid storage sub-cavity; the suspension limiting structure also includes a sealing member, which is arranged in the injection cavity and connected to the cavity wall of the injection cavity.

6. The suspension limiting structure according to claim 1 or 2, characterized in that: The main body has a buffer cavity; the first buffer portion has two connecting surfaces arranged opposite to each other, the two connecting surfaces are arranged adjacent to the main body and fixedly connected to the cavity wall of the buffer cavity, and the first buffer portion has a connecting cavity, and the connecting cavity has connecting openings formed on the two connecting surfaces.

7. The suspension limiting structure according to claim 1 or 2, characterized in that: The elastic member comprises: The first connecting part has a receiving cavity, wherein the receiving cavity forms an avoidance opening on the surface of the first connecting part, the inner core is arranged in the receiving cavity, and the main body and the first extruding part are located outside the first connecting part through the avoidance opening; The second connection part is configured as an annular structure, is arranged around the first connection part and has a gap between the first connection part and the second connection part, and the outer side of the second connection part is connected to the outer support member; Two second buffer parts are arranged opposite to each other and are symmetrically arranged with respect to the expansion and contraction direction of the first extrusion part, and two ends of the second buffer parts are respectively connected to the first connection part and the second connection part; The second extrusion portion is connected to an outer edge of the first connection portion away from the first extrusion portion, and a gap is left between the second extrusion portion and the second connection portion.

8. A vehicle, characterized in that: include: The suspension limiting structure according to any one of claims 1 to 7; a power assembly connected to the outer support; A subframe is connected to the inner core.

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