Bushing and vehicle

Abstract

The invention relates to a bushing and a vehicle. The bushing comprises a core body and a shell structure, the core body is sleeved with the shell structure, the core body is limited in the shell structure, a guide part is formed on the shell structure, and the guide part is used for guiding the shell structure to be disconnected from the guide part when the shell structure is extruded by the core body. By means of the technical scheme, when the lining loses efficacy, only the shell structure is usually damaged, the core body is basically kept complete, in this way, when the lining is repaired, only the shell structure needs to be repaired or replaced, the core body can continue to be used, and therefore the repairing cost of the lining is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of mechanical structures, and in particular to a bushing and a vehicle. Background Art

[0002] In some extreme working conditions, it is necessary to control the failure of the bushing so that the deformation of the mechanical equipment is minimized when it fails. The bushing failure design method in the related art causes permanent damage to the bushing, and the bushing cannot be used again as a whole after failure, which leads to an increase in the cost of repairing the bushing. Summary of the invention

[0003] The embodiments of the present application provide a bushing and a vehicle to alleviate the technical problem of high repair cost of the bushing.

[0004] In order to achieve the above-mentioned purpose, according to the first aspect of the present application, a bushing is provided, comprising: a core body and a shell structure, wherein the shell structure is sleeved outside the core body, the core body is confined within the shell structure, and a guide portion is formed on the shell structure, wherein the guide portion is used to guide the shell structure to disconnect from the guide portion when the core body squeezes the shell structure.

[0005] Optionally, the outer shell structure includes an outer cylinder and a limiting member, the outer cylinder is sleeved on the core body, and the outer cylinder is configured to be detachable along the circumferential direction, the limiting member is connected to the outer cylinder and is used to limit the separation of the outer cylinder along the circumferential direction, and the guide portion is arranged on the limiting member.

[0006] Optionally, the guiding portion is a notch, a first gap or a thinned portion provided on the limiting member.

[0007] Optionally, the guiding portion is the notch, and the notch is semicircular, semi-elliptical, rectangular or triangular.

[0008] Optionally, the guiding portion is the notch, and a ratio of an opening depth of the notch to a radius of the bushing is less than 0.5.

[0009] Optionally, the core body has a channel extending along the axial direction of the core body, the limiting member is provided with an avoidance hole corresponding to the channel, and the guiding portion is located at the edge of the avoidance hole.

[0010] Optionally, the limiting member includes a side plate, which surrounds the outer cylinder along the circumference of the outer cylinder and is connected to the outer cylinder.

[0011] Optionally, the limiting member further includes a bottom plate, the side plate is arranged on one side surface of the bottom plate, the bottom plate is located on the end of the outer cylinder, the bottom plate is used to limit the core body from escaping from the outer cylinder, and the avoidance hole is opened on the bottom plate.

[0012] Optionally, the outer cylinder includes a plurality of sub-shells assembled along its axis, and the limiting member is used to limit the plurality of sub-shells from being separated from each other.

[0013] Optionally, a second gap is formed between two adjacent sub-shells, and the number of the guide portions is equal to the number of the second gaps.

[0014] Optionally, along the circumference of the outer cylinder, an angle between the guide portion and the second gap is 0° to 45°.

[0015] Optionally, the guide portion and the second gap are arranged in a one-to-one correspondence.

[0016] Optionally, when the limiting member includes a side plate and a bottom plate, the side plate includes a plurality of sub-side plates spaced apart on the bottom plate, the sub-side plates are arranged in one-to-one correspondence with the sub-shells, and the guide portion corresponds to a gap between two adjacent sub-side plates.

[0017] Optionally, the sub-side plate is welded to the sub-shell or connected via fasteners.

[0018] Optionally, at least one side edge of the sub-shell is hinged to a corresponding side edge of another adjacent sub-shell, and at least one side edge of the sub-shell is independent of a corresponding side edge of another adjacent sub-shell.

[0019] Optionally, the number of the sub-shells is two, and the two sub-shells are respectively a first sub-shell and a second sub-shell, the first sub-shell having a first side and a second side opposite to each other, the second sub-shell having a third side and a fourth side opposite to each other, wherein the first side corresponds to the fourth side and is hingedly connected by a hinge, and the second side corresponds to the third side and is independent of each other.

[0020] Optionally, the guide portion is further configured to guide the outer shell structure to be disconnected from the guide portion when the acting force between the core and the outer shell structure reaches a limit extrusion force corresponding to the guide portion.

[0021] Optionally, the guide portion is a semi-elliptical notch, and the limit extrusion force satisfies the following relationship:

[0022]

[0023] Wherein, F is the limit extrusion pressure, r is the radius of the bushing, y1 is the distance between the notch and the center of the bushing, T is the thickness of the shell structure, σ τ is the tensile strength of the material of the shell structure, a is the depth of the notch, and b is half of the opening width of the notch.

[0024] Optionally, the core body includes an inner cylinder and an elastic member, the inner cylinder is provided with a channel, and the elastic member is provided between the inner cylinder and the outer shell structure.

[0025] Optionally, the elastic member is an elastic sleeve, and the inner cylinder is inserted into the elastic sleeve.

[0026] Optionally, the elastic sleeve includes a first straight tube section and a second straight tube section, wherein the inner diameter of the first straight tube section is larger than the inner diameter of the second straight tube section, and the second straight tube section is located at both ends of the first straight tube section.

[0027] Optionally, a boss is protruding from the middle section of the inner cylinder, the boss is correspondingly arranged in the first straight cylinder section, and the outer diameter of the boss is larger than the inner diameter of the second straight cylinder section.

[0028] Optionally, the elastic sleeve further includes a tapered cylinder section, and the tapered cylinder section extends from the first straight cylinder section to the second straight cylinder section.

[0029] Optionally, the elastic sleeve further comprises a radial extension section, which is connected to an end of the second straight tube section away from the first straight tube section, and the radial extension section extends radially along the elastic sleeve and protrudes from an outer surface of the second straight tube section.

[0030] Optionally, the elastic sleeve is formed by splicing a plurality of spring pieces.

[0031] Optionally, the length of the elastic member is smaller than the length of the inner cylinder and smaller than the length of the outer shell structure, and the bushing also includes a buffer member, which is sleeved outside the inner cylinder and located inside the outer shell structure, and the buffer member is also supported on the end of the elastic member.

[0032] Optionally, the buffer member is connected to the shell structure.

[0033] Optionally, the material of the buffer element includes at least one of rubber and silicone.

[0034] According to a second aspect of the present application, a vehicle is provided, comprising the bushing as described above.

[0035] Optionally, the vehicle includes a subframe and a swing arm, and the bushing connects the subframe and the swing arm.

[0036] The bushing provided in the embodiment of the present application includes a core body and a shell structure which are sequentially distributed from the inside to the outside, and a force interaction can be generated between the core body and the shell structure. The guide portion on the shell structure can guide the shell structure to disconnect from the guide portion when a force interaction occurs between the core body and the shell structure, so that the shell structure is opened and the core body can be separated from the shell structure, thereby causing the bushing to fail. In the process of bushing failure, usually only the shell structure is damaged, while the core body remains basically intact. In this way, when repairing the bushing, only the shell structure needs to be repaired or replaced, and the core body can continue to be used, thereby reducing the cost of bushing repair.

[0037] Other features and advantages of the present application will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[0039] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings, wherein the same figure numbers represent the same parts in the following description.

[0040] Figure 1 is a schematic diagram of a three-dimensional structure of a bushing provided in an exemplary embodiment of the present application;

[0041] Figure 2 is an internal cross-sectional view of a bushing provided in an exemplary embodiment of the present application;

[0042] Figure 3 is a schematic diagram of a top view of a bushing provided in an exemplary embodiment of the present application;

[0043] Figure 4 yes Figure 3 A magnified schematic diagram of part C;

[0044] Figure 5 is an exploded view of a bushing provided in an exemplary embodiment of the present application;

[0045] Figure 6 is a partial structural schematic diagram of another stopper in a bushing provided in an exemplary embodiment of the present application;

[0046] Figure 7 is a partial structural schematic diagram of another limiting member in a bushing provided in an exemplary embodiment of the present application;

[0047] Figure 8 is a schematic diagram of a top view of another type of stopper in a bushing provided in an exemplary embodiment of the present application;

[0048] Fig. 9 It is a schematic structural diagram of a vehicle provided in an exemplary embodiment of the present application.

[0049] Description of reference numerals:

[0050] 10. Bushing;

[0051] 1. core; 101. channel;

[0052] 11. Inner cylinder; 111. Boss;

[0053] 12. Elastic parts;

[0054] 121, elastic sleeve; 1210, shrapnel;

[0055] 1211, the first straight tube section;

[0056] 1212, second straight section;

[0057] 1213, cone section;

[0058] 1214, radial extension section;

[0059] 2. Shell structure; 201. Guide portion; 2011. Notch; 2012. First gap; 2013. Thinning portion;

[0060] 21. Outer cylinder;

[0061] 210, sub-housing; 211, second gap; 212, side; 213, hinge;

[0062] 2101, first sub-shell; 2121, first side edge; 2122, second side edge;

[0063] 2102, second sub-shell; 2123, third side; 2124, fourth side;

[0064] 22, limiter; 221, side panel; 2211, sub-side panel; 222, bottom panel; 2221, avoidance hole;

[0065] 3. Buffer parts;

[0066] 100. Vehicles;

[0067] 20. Subframe; 30. Swing arm; 40. Wheel. DETAILED DESCRIPTION

[0068] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0069] According to the first aspect of this application, see Figures 1 to 8 The present application provides a bushing 10, which includes a core body 1 and a shell structure 2, wherein the shell structure 2 is sleeved outside the core body 1, and the core body 1 is confined within the shell structure 2. A guide portion 201 is formed on the shell structure 2, and the guide portion 201 is used to guide the shell structure 2 to disconnect from the guide portion 201 when the core body 1 squeezes the shell structure 2.

[0070] The bushing 10 is a connector that can be used to connect different components in the vehicle 100. For ease of description, the bushing 10 is used to connect the first component and the second component as an example. As an example, when the bushing 10 is used as a connector, the core 1 can be connected to the first component, the shell structure 2 can be connected to the second component, and the first component and the second component are connected by connecting to the bushing 10 respectively.

[0071] Exemplarily, the first component is one of the subframe 20 and the swing arm 30 , and the second component is the other of the subframe 20 and the swing arm 30 .

[0072] It can be understood that in the bushing 10, the core 1 and the shell structure 2 are arranged from the inside to the outside. Although the core 1 is confined in the shell structure 2, and the shell structure 2 is sleeved outside the core 1, the core 1 and the shell structure 2 are independently molded and arranged, so that the core 1 and the shell structure 2 can generate force interaction. For example, see Figure 1 , the core 1 can apply an extrusion force to the shell structure 2 along the Y-axis direction. Of course, the core 1 can also extrude the shell structure 2 along other directions, such as the opposite direction of the X-axis and the Y-axis.

[0073] It should be noted here that the core 1 being confined in the shell structure 2 means that the core 1 is not easily separated from the shell structure 2. As an example, the core 1 and the shell structure 2 are in interference fit, and the core 1 is not easily separated from the shell structure 2, or the core 1 is wrapped in the shell structure 2, and the opening on the shell structure 2 is smaller than the minimum size of the core 1, and the shell structure 2 can prevent the core 1 from separating.

[0074] The guide portion 201 on the shell structure 2 can guide the shell structure 2 to disconnect from the guide portion 201 when force interaction occurs between the core body 1 and the shell structure 2, so that the shell structure 2 is opened, and the core body 1 can be separated from the shell structure 2, that is, the bushing 10 fails, and the connection between the first component and the second component also fails.

[0075] It should be noted that there may be one or more guide portions 201 on the outer shell structure 2. When there are multiple guide portions 201, the outer shell structure 2 may be broken into multiple parts, thereby realizing that the outer shell structure 2 is opened.

[0076] It can be seen that when the bushing 10 fails, usually only the outer shell structure 2 is damaged, while the core 1 remains basically intact. Therefore, when repairing the bushing 10, only the outer shell structure 2 needs to be repaired or replaced, and the core 1 can continue to be used, thereby reducing the cost of repairing the bushing 10 and further reducing the cost of repairing the vehicle 100.

[0077] In some embodiments, see Figures 1 to 8 The guide portion 201 is also configured to guide the outer shell structure 2 to disconnect from the guide portion 201 when the force between the core 1 and the outer shell structure 2 reaches a limit extrusion force corresponding to the guide portion 201 .

[0078] In order to ensure that the housing structure 2 is disconnected from the guide portion 201, the guide portion 201 is usually designed as a mechanically weak point on the housing structure 2. As an example, see Figure 6 , Figure 7 and Figure 8 The guide portion 201 can be a notch 2011, a first gap 2012, or a thinning portion 2013 with a reduced thickness on the outer shell structure 2. Therefore, by designing the structure of the guide portion 201, the failure force of the bushing 10 can be adjusted. Here, the failure force of the bushing 10 refers to the limit extrusion force between the core 1 and the outer shell structure 2 when the outer shell structure 2 is disconnected and causes the bushing 10 to fail. Usually, the structure of the guide portion 201 will affect the stress distribution on the outer shell structure 2, and then affect the magnitude of the limit extrusion force. Usually, different guide portions 201 correspond to different limit extrusion forces.

[0079] See also Figure 8 Taking the guide portion 201 as the thinning portion as an example, generally, the greater the thickness of the thinning portion, the higher the mechanical strength of the thinning portion, the more difficult it is to open the shell structure 2, and the greater the ultimate extrusion pressure (i.e., the failure force of the bushing 10); conversely, the smaller the thickness of the thinning portion, the weaker the mechanical strength of the thinning portion, the easier it is to open the shell structure 2, and the smaller the ultimate extrusion pressure.

[0080] That is to say, the shell structure 2 can be opened only when the force exerted by the core body 1 on the shell structure 2 reaches the limit extrusion force corresponding to the guide part 201 on the shell structure 2, that is, the failure force of the bushing 10, to achieve failure control of the bushing 10.

[0081] In addition, the failure control of the bushing 10 is achieved through mechanical design, and there is no need to introduce an additional control system, which is conducive to controlling the production cost of the vehicle 100.

[0082] In some embodiments, see Figure 1 The outer shell structure 2 includes an outer cylinder 21 and a limiting member 22. The outer cylinder 21 is sleeved on the core body 1, and the outer cylinder 21 is configured to be detachable along the circumferential direction. The limiting member 22 is connected to the outer cylinder 21 and is used to limit the separation of the outer cylinder 21 along the circumferential direction. The guide portion 201 is arranged on the limiting member 22.

[0083] Here, the outer cylinder 21 is configured to be separable along the circumferential direction, which means that the side wall of the outer cylinder 21 is not a continuous structure in the circumferential direction of the outer cylinder 21, and at least a part of the side wall is disconnected or separated from other parts in the circumferential direction of the outer cylinder 21. As an example, the outer cylinder 21 includes a curved side wall, and in the circumferential direction of the outer cylinder 21, the curved side wall has a head end and a tail end, and the head end and the tail end correspond to each other but are completely disconnected from each other. As an example, the outer cylinder 21 is formed by splicing a plurality of independently formed sub-side walls, and different sub-shells are separable.

[0084] Through the above arrangement, when force interaction occurs between the core body 1 and the outer shell structure 2, the limit member 22 will be disconnected first, and after the limit member 22 is disconnected, the outer cylinder 21 will not be able to be limited, and then the outer cylinder 21 will be opened along the circumferential direction, thereby causing the core body 1 to be separated from the outer shell structure 2, that is, the bushing 10 fails.

[0085] It can be seen that in this case, when the bushing 10 fails, only the stopper 22 in the outer shell structure 2 will be damaged, and the outer cylinder 21 in the outer shell structure 2 is only switched in state. When repairing the bushing 10, it is only necessary to reset the outer cylinder 21. In other words, when repairing the bushing 10, it is only necessary to repair or replace the stopper 22, while the outer cylinder 21 and the core 1 can continue to be used, further reducing the cost and difficulty of repairing the bushing 10.

[0086] In some embodiments, the stopper 22 is connected to the outer cylinder 21, and the stopper 22 and the outer cylinder 21 may be welded, sleeved, threaded or riveted. The stopper 22 may be annular or U-shaped, which is not limited here.

[0087] In some embodiments, the stopper 22 and the outer cylinder 21 are both made of metal, and the metal here includes but is not limited to at least one of steel, copper, aluminum and titanium.

[0088] In some embodiments, see Figures 3 to 8 The guiding portion 201 is a notch 2011 , a first slit 2012 or a thinning portion 2013 arranged on the limiting member 22 .

[0089] By setting the guide portion 201 as a notch 2011, a first gap 2012 or a thinned portion 2013, the structure of the bushing 10 can be simplified. On the one hand, the manufacturing difficulty of the guide portion 201 can be reduced, and on the other hand, the reliability of failure control of the bushing 10 can be improved.

[0090] In some embodiments, the outer shell structure 2 may also be configured to include only the outer cylinder 21, and the stopper 22 is omitted, but the outer cylinder 21 is an integral structure, that is, in the circumferential direction of the outer cylinder 21, the side wall of the outer cylinder 21 is a continuous structure. In other words, the outer cylinder 21 is not configured to be separable along the circumferential direction. In this case, the guide portion 201 may be a notch 2011, a first slit 2012, or a thinning portion 2013 directly provided on the outer cylinder 21.

[0091] In some embodiments, the guide portion 201 is a notch 2011 .

[0092] Specifically, the notch 2011 is formed by a local inward concave portion of the side of the stopper 22. The number of notches 2011 on the stopper 22 can be one or more. The shape of the notch 2011 can also be designed according to requirements. As an example, see Figure 4 , the gap 2011 can be designed as a triangle, or see Figure 6 , the notch 2011 may also be designed as a semi-ellipse.

[0093] By setting the guide part 201 on the limit member 22 as the notch 2011, the notch 2011 will be formed as the weakest area on the limit member 22. In this way, when the limit member 22 is subjected to force, stress concentration will occur at the position where the notch 2011 on the limit member 22 is located, thereby better guiding the limit member 22 to disconnect from the area where the notch 2011 is located.

[0094] In addition, by setting the guide portion 201 as a notch 2011, the failure force of the bushing 10 can be effectively controlled by controlling the opening shape, opening depth, opening angle, opening size, etc. of the notch 2011, thereby improving the reliability of the failure chain control on the vehicle 100.

[0095] In some embodiments, the guide portion 201 is a semi-elliptical notch 2011, and the limit extrusion pressure corresponding to the guide portion 201 satisfies the following relationship:

[0096]

[0097] Where F is the limit extrusion pressure, r is the radius of the bushing 10, y1 is the distance between the notch 2011 and the center of the bushing 10, T is the thickness of the shell structure 2, σ τ is the tensile strength of the material of the outer shell structure 2 , a is the depth of the notch 2011 , and b is half of the opening width of the notch 2011 .

[0098] Specifically, the failure force control of the bushing 10 is described below by taking the guide portion 201 as a notch 2011 opened on the limiting member 22 and the notch 2011 as a semi-elliptical example.

[0099] The failure force of the bushing 10 can be calculated based on the stress concentration formula, such as Figure 3 As shown, the force on the bushing 10 is inversely proportional to the Y-axis direction. Figure 3 The radius of the bushing 10 is r (i.e., the distance from point O to point B, in mm), and the distance between the notch 2011 and the center of the bushing 10 is y1 (i.e., the distance from point O to point A, in mm).

[0100] Assuming that the failure force of the bushing 10 (specifically, the force applied by the core 1 to the shell structure 2) is F (in N), the force on the stopper 22 at the notch 2011 is F1, where:

[0101]

[0102] Assuming that the thickness of the stopper 22 is T, the average stress of the bushing 10 is σ T ,in:

[0103]

[0104] See also Figure 6 When the notch 2011 is semi-elliptical, the opening width of the notch 2011 is 2b and the depth is a, then the stress concentration factor at the notch 2011 is K t ,in:

[0105]

[0106] Assume that the tensile strength of the material of the stopper 22 is σ τ , then the failure force calculation formula of bushing 10 is:

[0107]

[0108] It can be seen from the above-mentioned failure force calculation formula of the bushing 10 that in the design process of the bushing 10, when the radius r of the bushing 10, the distance y1 between the notch 2011 and the center of the bushing 10, the thickness T of the limiter 22, and the material of the limiter 22 are all determined, the failure force of the bushing 10 can be accurately adjusted by adjusting the opening width and depth of the notch 2011, thereby making the failure force control of the bushing 10 simpler and more correct.

[0109] In addition, by changing the opening angle of the notch 2011, the stress concentration parameter can be deeply controlled, thereby controlling the failure force of the bushing 10. Therefore, the main structure of the bushing 10 (including the core 1, the outer cylinder 21, etc.) can remain consistent, and only the notch 2011 on the stopper 22 needs to be modified to obtain a bushing 10 with different failure forces to adapt to different failure chain requirements.

[0110] In some embodiments, the notch 2011 is semicircular, semi-elliptical, rectangular or triangular. The above shapes are relatively regular, so it is convenient to calculate the failure force of the bushing 10 by the stress concentration formula when designing the bushing 10. In addition, these shapes are relatively simple, which is conducive to reducing the difficulty of manufacturing the notch 2011.

[0111] In some embodiments, the ratio of the opening depth of the notch 2011 to the radius of the bushing 10 is less than 0.5. By controlling the opening depth of the notch 2011 to be less than half the radius of the bushing 10, the effectiveness of the stress concentration factor can be ensured, thereby ensuring the accuracy of the failure force of the bushing 10 calculated by the stress concentration formula. As an example, the ratio of the opening depth of the notch 2011 to the radius of the bushing 10 is less than 0.5, 0.4, 0.3, 0.2, 0.1, 0.05 or 0.01.

[0112] In some embodiments, see Figures 1 to 5 The core body 1 has a channel 101 extending along the axial direction of the core body 1 , and the limiting member 22 is provided with an avoidance hole 2221 corresponding to the channel 101 , and the guide portion 201 is located at the edge of the avoidance hole 2221 .

[0113] A channel 101 is provided on the core 1, and the channel 101 can be used for the connection structure (such as a movable pin) of the first component to pass through, so as to realize the connection between the bushing 10 and the first component. Since the core 1 is arranged in the outer cylinder 21, the stopper 22 is connected to the outer cylinder 21. In order to avoid the interference of the stopper 22 with the connection structure of the first component used to extend into the channel 101, an avoidance hole 2221 is also provided on the stopper 22, and the avoidance hole 2221 corresponds to the channel 101. It can be foreseen that when the connection structure of the first component extends into the channel 101, it will also pass through the avoidance hole 2221. In this way, when the first component applies an extrusion force to the core 1, the core 1 transmits the extrusion force to the outer shell structure 2, and the stopper 22 is subjected to force synchronously. The guide portion 201 (such as the notch 2011) is set to be located at the edge of the avoidance hole 2221, which can better realize stress concentration, thereby better controlling the failure force of the bushing 10.

[0114] As an example, see Figure 1 and Figure 2 , the axial direction of the core 1 is the Z-axis direction.

[0115] In some embodiments, see Figure 1 The number of the avoidance hole 2221 on the limiting member 22 is one. The guiding portion 201 is a notch 2011 , and the number of the notches 2011 is multiple, and the multiple notches 2011 are distributed at intervals on the edge of the avoidance hole 2221 .

[0116] In some embodiments, the avoidance hole 2221 is concentrically disposed with the channel 101, and the opening area of ​​the avoidance hole 2221 is greater than or equal to the opening area of ​​the channel 101. In other words, in the axial direction of the bushing 10, the orthographic projection of the channel 101 is located within the orthographic projection of the avoidance hole 2221.

[0117] In some embodiments, see Figure 1 , Figure 5 and Figure 8 The limiting member 22 includes a side plate 221 , which surrounds the outer cylinder 21 along the circumference of the outer cylinder 21 and is connected to the outer cylinder 21 .

[0118] By providing the side plates 221 along the circumferential direction of the outer cylinder 21 and connecting the side plates 221 to the outer cylinder 21 , the outer cylinder 21 can be restricted from being separated along the circumferential direction.

[0119] The connection method between the side plate 221 and the outer cylinder 21 can be set according to actual conditions. For example, the side plate 221 and the outer cylinder 21 can be welded, or the side plate 221 and the outer cylinder 21 can be threadedly connected through threaded fasteners.

[0120] As an example, see Figure 8The side plate 221 is a continuous plate body, and the side plate 221 is annular, and the side plate 221 is sleeved on the outer circumference of the outer cylinder 21 and has an interference fit with the outer cylinder 21. In the case where the stopper 22 only includes the annular side plate 221, the central through hole defined by the side plate 221 is the avoidance hole 2221.

[0121] In some embodiments, see Figure 1 and Figure 5 The limiting member 22 also includes a bottom plate 222 , a side plate 221 is arranged on one side surface of the bottom plate 222 , the bottom plate 222 is located on the end of the outer cylinder 21 , the bottom plate 222 is used to limit the core 1 from escaping from the outer cylinder 21 , and the avoidance hole 2221 is opened on the bottom plate 222 .

[0122] In the above structure, in addition to limiting the separation of the outer cylinder 21 in the circumferential direction, the limiting member 22 can also limit the core 1 from escaping from the outer cylinder 21 along the axial direction of the outer cylinder 21 by using the bottom plate 222. In this case, the core 1 and the outer shell structure 2 can be in a tight fit or a loose fit. In order to prevent the bottom plate 222 from affecting the connection between the core 1 and the first component, the avoidance hole 2221 is opened on the bottom plate 222.

[0123] Optionally, the bottom plate 222 abuts against the end of the outer cylinder 21 , and the bottom plate 222 also abuts against the core 1 .

[0124] In some embodiments, see Figure 1 and Figure 5 The outer cylinder 21 includes a plurality of sub-shells 210 assembled along its axis, and the limiting member 22 is used to limit the plurality of sub-shells 210 from being separated from each other.

[0125] Here, multiple refers to two or more than two. There are multiple sub-shells 210, each sub-shell 210 is independently formed, and all sub-shells 210 are enclosed together to form the outer cylinder 21. As an example, there are three sub-shells 210, and the three sub-shells 210 are distributed in sequence, wherein any sub-shell 210 is located between the other two sub-shells 210. Enclosure here can be understood as all sub-shells 210 being assembled together around the same center line (i.e., the axis of the outer cylinder 21).

[0126] When the outer cylinder 21 includes a plurality of sub-shells 210 , the limiting member 22 is connected to the outer cylinder 21 specifically to the sub-shells 210 in the outer cylinder 21 , and may be connected to all or part of the sub-shells 210 .

[0127] By arranging the outer cylinder 21 to be composed of a plurality of sub-shells 210, when the core 1 and the outer shell structure 2 interact with each other, the outer cylinder 21 will be opened to form a plurality of sub-shells 210 after the stopper 22 is disconnected, thereby causing the core 1 to be separated from the outer shell structure 2 and the bushing 10 to fail. When repairing the bushing 10, the outer cylinder 21 can be restored by simply reassembling all the sub-shells 210, thereby reducing the difficulty of repairing the bushing 10.

[0128] In addition, this arrangement can also improve the opening effect of the outer shell structure 2 and improve the synchronization between the opening of the outer shell structure 2 and the failure of the bushing 10 .

[0129] In some embodiments, see Figure 3 A second gap 211 is formed between two adjacent sub-shells 210 , and the number of the guide portions 201 is equal to the number of the second gaps 211 .

[0130] The number of subshells 210 in the outer cylinder 21 is equal to the number of second slits 211, and when the stopper 22 breaks along the guide portion 201, the number of guide portions 201 is consistent with the number of fragments obtained by the breakage of the stopper 22. By setting the number of guide portions 201 to be equal to the number of second slits 211, the outer cylinder 21 and the stopper 22 can be split into equal substructures, further improving the opening effect of the outer shell structure 2, and improving the synchronization between the opening of the outer shell structure 2 and the failure of the liner 10, thereby ensuring the control of the failure of the liner 10.

[0131] In some embodiments, see Figure 3 Along the circumference of the outer cylinder 21 , the angle between the guide portion 201 and the second slit 211 is 0° to 45°.

[0132] Here, the angle between the guide portion 201 and the second gap 211 refers to the line between the center of the bushing 10 and the center of the guide portion 201 (eg, the notch 2011) (eg, Figure 3 OA line) and the line connecting the center of the bushing 10 and the second gap 211 (such as Figure 3 The size of the angle between the OB line.

[0133] As an example, the angle between the guide portion 201 and the second gap 211 can be 0°, 5°, 10°, 15°, 20°, 25°, 30°, 35°, 40° or 45°.

[0134] Generally, the second gap 211 is a position where the connection strength between different sub-shells 210 of the outer cylinder 21 is weak, and the guide portion 201 is a position where the mechanical strength of the limit member 22 is weak. By controlling the angle between the guide portion 201 and the second gap 211 to be less than or equal to 45°, the two are made closer, which is beneficial for the synchronous opening of the outer cylinder 21 when the limit member 22 breaks, and can further improve the opening effect of the outer shell structure 2, and enhance the synchronization between the opening of the outer shell structure 2 and the failure of the bushing 10, thereby ensuring the control of the failure of the bushing 10.

[0135] In some embodiments, see Figure 3 The guide portion 201 and the second slit 211 are arranged in a one-to-one correspondence.

[0136] The guides 201 and the second slits 211 are arranged one-to-one, that is, the number of the guides 201 and the second slits 211 is equal, and the positions of the two are corresponding, that is, the angle between the guides 201 and the second slits 211 is 0°. This arrangement can make the bushing 10 fail directly when the failure force is reached.

[0137] In some embodiments, see Figure 3 In the case where the limiting member 22 includes a side plate 221 and a bottom plate 222 , the side plate 221 includes a plurality of sub-side plates 2211 spaced apart on the bottom plate 222 , the sub-side plates 2211 are arranged one-to-one with the sub-shells 210 , and the guide portion 201 corresponds to the gap between two adjacent sub-side plates 2211 .

[0138] In this structure, the side panel 221 does not need to be set as a continuous plate body. The side panel 221 includes a plurality of spaced sub-side panels 2211, and each sub-side panel 2211 is indirectly connected together by connecting to the bottom panel 222, so that the side panel 2211 can also limit the sub-shell 210.

[0139] The sub-side plates 2211 are arranged in a one-to-one correspondence with the sub-shells 210, that is, the number of the sub-side plates 2211 and the sub-shells 210 is equal, and the positions are corresponding. In this way, the gap between two adjacent sub-side plates 2211 keeps corresponding to the second gap 211 between two adjacent sub-shells 210, so that the second gap 211 between two adjacent sub-shells 210 can be exposed through the gap between two adjacent sub-side plates 2211. The guide portion 201 corresponds to the gap between two adjacent sub-side plates 2211 and the second gap 211 between two adjacent sub-shells 210, thereby improving the opening effect of the shell structure 2, further improving the synchronization of the opening of the shell structure 2 and the failure of the bushing 10, thereby ensuring the control of the failure of the bushing 10.

[0140] In some embodiments, see Figure 1 The sub-side plate 2211 is welded to the sub-shell 210 or connected by fasteners.

[0141] By connecting the sub-side plate 2211 and the sub-shell 210 together, the structural stability and reliability of the bushing 10 before failure can be improved, and the connection effect can be ensured.

[0142] As an example, the sub-side plate 2211 is connected to the sub-housing 210 by fasteners. Specifically, the sub-side plate 2211 and the sub-housing 210 are both provided with corresponding connection through holes, and the sub-side plate 2211 is connected and fixed to the sub-housing 210 by passing the fasteners through the connection through holes. The fasteners here can be threaded fasteners or non-threaded fasteners. When the fasteners are threaded fasteners, the threaded fasteners include at least one of screws and bolts.

[0143] In some embodiments, see Figure 1 and Figure 5 At least one side edge 212 of the sub-shell 210 is hinged to the corresponding side edge 212 of another adjacent sub-shell 210, and at least one side edge 212 of the sub-shell 210 is independent of the corresponding side edge 212 of another adjacent sub-shell 210.

[0144] That is to say, not all the side edges 212 on the outer cylinder 21 are hinged together, nor are all the side edges 212 independent of each other, but some of the side edges 212 on the outer cylinder 21 are hingedly connected, and other side edges 212 are independent of each other. Here, the side edge 212 of the sub-shell 210 refers to the side edge of the sub-shell 210 in the circumferential direction of the outer cylinder 21.

[0145] The side edges 212 of different sub-shells 210 are hinged together, which can reduce the difficulty of assembling the sub-shells 210 into the outer cylinder 21, and the side edges 212 of different sub-shells 210 are set to be independent of each other (that is, the side edges 212 are not connected), which is conducive to opening the outer cylinder 21. Through the above arrangement, the need to open the outer cylinder 21 is taken into account, and the difficulty of assembling the outer cylinder 21 is reduced.

[0146] In order to more clearly illustrate the connection relationship between the sub-shells 210 , an example is given below.

[0147] As an example, the outer cylinder 21 includes three sub-shells 210, and has a total of six side edges 212 along the circumference of the outer cylinder 21. In terms of the connection relationship, four of the side edges 212 may be hinged together in pairs, and the other two side edges 212 may be independent of each other, or two of the side edges 212 may be hinged together, and the other four side edges 212 may be independent of each other. In other words, at least two side edges 212 are hinged together, and at least two side edges 212 are independent of each other, and the remaining two side edges 212 may be hinged together or independent of each other.

[0148] As an example, see Figure 1 A side edge 212 of one sub-shell 210 is hinged to a corresponding side edge 212 of another adjacent sub-shell 210 , and specifically, the connection may be via a hinge 213 .

[0149] In some embodiments, see Figure 5 There are two sub-shells 210, the two sub-shells 210 are respectively a first sub-shell 2101 and a second sub-shell 2102, the first sub-shell 2101 has a first side 2121 and a second side 2122 relative to each other, the second sub-shell 2102 has a third side 2123 and a fourth side 2124 relative to each other, wherein the first side 2121 corresponds to the fourth side 2124 and is hingedly connected by a hinge 213, and the second side 2122 corresponds to the third side 2123 and is independent of each other.

[0150] When the bushing 10 fails, the second side 2122 and the third side 2123 are separated first, and then the first sub-shell 2101 and the second sub-shell 2102 rotate around the hinge 213 in directions away from each other, thereby realizing the opening of the outer cylinder 21 .

[0151] In addition, by controlling the number of sub-shells 210 to two, the opening effect of the outer shell structure 2 can be taken into consideration, the assembly difficulty of the outer shell structure 2 can be reduced, and the comprehensive performance of the bushing 10 can be improved.

[0152] In some embodiments, see Figure 5 The core body 1 includes an inner cylinder 11 and an elastic member 12 . The inner cylinder 11 is provided with a channel 101 . The elastic member 12 is arranged between the inner cylinder 11 and the outer shell structure 2 .

[0153] The core body 1 has a channel 101 , and the channel 101 is specifically opened on the inner cylinder 11 .

[0154] In the above structure, the bushing 10 is an elastic connector. The elastic member 12 is arranged between the inner cylinder 11 and the outer shell structure 2, so that when the inner cylinder 11 and the outer shell structure 2 interact with each other, the elastic member 12 can reduce wear, vibration and noise.

[0155] In some embodiments, see Figure 2 and Figure 5 The elastic member 12 is an elastic sleeve 121 , and the inner cylinder 11 is inserted into the elastic sleeve 121 .

[0156] By configuring the elastic member 12 as an elastic sleeve 121 wrapped around the inner cylinder 11 , the elastic sleeve 121 can buffer the acting force between the inner cylinder 11 and the outer shell structure 2 from multiple directions.

[0157] In some embodiments, see Figure 2 and Figure 5 The elastic sleeve 121 includes a first straight tube section 1211 and a second straight tube section 1212 , wherein the inner diameter of the first straight tube section 1211 is larger than the inner diameter of the second straight tube section 1212 , and the second straight tube section 1212 is located at both ends of the first straight tube section 1211 .

[0158] By configuring the elastic sleeve 121 to include a first straight section 1211 and a second straight section 1212 with different inner diameters, there is a step difference between the first straight section 1211 and the second straight section 1212 . The step difference can increase the elasticity of the elastic sleeve 121 and improve the buffering capacity of the bushing 10 .

[0159] In addition, the first straight tube section 1211 and the second straight tube section 1212 have different inner diameters, so that the side wall of the elastic sleeve 121 is formed into a bent side wall, which is conducive to forming a gap between the elastic sleeve 121 and the inner cylinder body 11, and also conducive to forming a gap between the elastic sleeve 121 and the outer shell structure 2. These gaps can be used to accommodate lubricants, thereby reducing the wear between the elastic sleeve 121 and the inner cylinder body 11, as well as the wear between the elastic sleeve 121 and the outer shell structure 2, thereby extending the service life of the bushing 10.

[0160] In some embodiments, see Figure 2 A boss 111 is protruding from the middle section of the inner cylinder 11 , and the boss 111 is correspondingly arranged in the first straight cylinder section 1211 , and the outer diameter of the boss 111 is greater than the inner diameter of the second straight cylinder section 1212 .

[0161] By arranging the boss 111 on the inner cylinder 11, arranging the boss 111 in the inner cavity of the first straight cylinder section 1211, and controlling the outer diameter of the boss 111 to be larger than the inner diameter of the second straight cylinder section 1212, the boss 111 can be used as a limiting structure to limit the separation of the inner cylinder 11 and the elastic sleeve 121. In addition, the boss 111 and the elastic sleeve 121 cooperate with each other to provide elastic stiffness for the bushing 10.

[0162] Optionally, the boss 111 is adapted to the inner cavity of the first straight cylinder section 1211 , so that the boss 111 can also be fixed in the inner cylinder 11 , that is, the inner cylinder 11 and the elastic sleeve 121 are fixed together.

[0163] In some embodiments, see Figure 2 The elastic sleeve 121 also includes a tapered cylinder section 1213 , which extends from the first straight cylinder section 1211 to the second straight cylinder section 1212 .

[0164] It can be understood that the conical cylinder section 1213 is located between the first straight cylinder section 1211 and the second straight cylinder section 1212, and the conical cylinder section 1213 extends obliquely from one end of the first straight cylinder section 1211 to one end of the second straight cylinder section 1212, that is, the conical cylinder section 1213 is inclined relative to the central axis of the elastic sleeve 121, that is, the conical cylinder section 1213 is in a slope shape. In this way, the inner surface of the conical cylinder section 1213 will be formed into an inclined surface. When the inner cylinder body 11 is subjected to axial force or radial force, the boss 111 will slide on the inclined surface, and the conical cylinder section 1213 will be deformed to provide support force. Thanks to the slope shape of the conical cylinder section 1213, the support force generated by the conical cylinder section 1213 can be approximately linear, which is convenient for design control.

[0165] Since the elastic sleeve 121 is a main component related to the stiffness of the bushing 10 , the stiffness of the bushing 10 can be controlled by controlling the thickness of the side wall of the elastic sleeve 121 and the slope angle of the conical cylinder section 1213 .

[0166] In some embodiments, see Figure 2 The elastic sleeve 121 also includes a radial extension section 1214, which is connected to one end of the second straight tube section 1212 away from the first straight tube section 1211, and the radial extension section 1214 extends along the radial direction of the elastic sleeve 121 and protrudes from the outer surface of the second straight tube section 1212.

[0167] The radial extension section 1214 can cooperate with the conical section 1213 to further increase the rigidity of the elastic sleeve 121. In addition, the outer diameter of the radial extension section 1214 is greater than the outer diameter of the second straight section 1212, thereby shortening the distance between the radial extension section 1214 and the inner surface of the shell structure 2, which is beneficial to improving the sealing performance inside the bushing 10.

[0168] In some embodiments, see Figure 5 The elastic sleeve 121 is formed by splicing a plurality of spring pieces 1210 .

[0169] In this way, the manufacturing difficulty of the elastic sleeve 121 can be reduced. In addition, when the elastic sleeve 121 is matched with the inner cylinder body 11 with the boss 111, the assembly difficulty can be reduced.

[0170] As an example, the elastic sleeve 121 is formed by splicing two elastic sheets 1210 , and the two elastic sheets 1210 are symmetrically arranged.

[0171] In some embodiments, the spring piece 1210 is made of a material with a high elastic modulus, such as steel.

[0172] In some embodiments, see Figure 5The length of the elastic member 12 is smaller than the length of the inner cylinder 11 and smaller than the length of the outer shell structure 2 . The bushing 10 also includes a buffer member 3 . The buffer member 3 is sleeved outside the inner cylinder 11 and located inside the outer shell structure 2 . The buffer member 3 is also supported on the end of the elastic member 12 .

[0173] Here, the length of the elastic member 12, the length of the inner cylinder 11 and the length of the outer shell structure 2 are all dimensions in the axial direction of the bushing 10. Since the length of the elastic member 12 is smaller than the smaller one of the length of the inner cylinder 11 and the length of the outer shell structure 2, there is a surplus accommodation space between the inner cylinder 11 and the outer shell structure 2, and the buffer member 3 is installed in the accommodation space and supported on the end of the elastic member 12.

[0174] The buffer 3 usually has a certain elasticity, so the buffer 3 can provide axial rigidity for the bushing 10. In addition, the buffer 3 can further improve the sealing performance of the bushing 10, which is conducive to preserving the lubricant between the elastic member 12 and the inner cylinder 11 and reducing the wear inside the bushing 10.

[0175] In some embodiments, when the shell structure 2 includes a limit member 22, and the limit member 22 includes a side plate 221 and a bottom plate 222, the buffer member 3 is located between the bottom plate 222 and the elastic member 12, and the buffer member 3 can reduce the impact and wear between the bottom plate 222 and the elastic member 12.

[0176] In some embodiments, when the elastic member 12 is an elastic sleeve 121 , and the elastic sleeve 121 further includes a radial extension section 1214 , the buffer member 3 is supported on the radial extension section 1214 , that is, the radial extension section 1214 is used to support the buffer member 3 .

[0177] In some embodiments, the buffer member 3 is a hollow cylinder, and the buffer member 3 is sleeved on the inner cylinder 11 .

[0178] In some embodiments, the material of the buffer 3 includes at least one of rubber and silicone. The elastic modulus of the above material is relatively small, which can not only effectively improve the buffering capacity of the buffer 3, but also better improve the sealing performance of the bushing 10.

[0179] In some embodiments, see Figure 2 and Figure 5 , the buffer component 3 is connected to the outer shell structure 2.

[0180] As an example, the buffer 3 is connected to the shell structure 2 by fasteners. Specifically, the buffer 3 and the shell structure 2 are provided with corresponding connection holes, and the buffer 3 and the shell structure 2 are connected and fixed by passing the fasteners through the connection holes.

[0181] By connecting the buffer 3 to the outer shell structure 2, not only the risk of the buffer 3 being detached can be reduced, but also the sealing performance of the bushing 10 can be further improved, thereby ensuring the stability and reliability of the structure of the bushing 10.

[0182] In some embodiments, when the outer shell structure 2 includes a cylinder 21 and a limit member 22, corresponding connecting holes are provided on the buffer member 3, the cylinder 21 and the limit member 22, and the fasteners are passed through the connecting holes to achieve connection and fixation of the three.

[0183] According to the second aspect of this application, see Fig. 9 The embodiment of the present application further provides a vehicle 100 , which includes the above-mentioned bushing 10 .

[0184] The vehicle 100 has all the beneficial effects of the bushing 10 described above, which will not be described in detail in this application.

[0185] The vehicle 100 may be a fuel vehicle, a plug-in hybrid vehicle, a new energy vehicle, etc., which is not specifically limited in the present application.

[0186] In some embodiments, see Fig. 9 The vehicle 100 includes a subframe 20 and a swing arm 30 , and the bushing 10 connects the subframe 20 and the swing arm 30 .

[0187] Under high-load impact conditions, the suspension component destruction chain requirements are: before the control arm (stamping, forging or casting), steering rod (forging) and subframe (stamping), stabilizer rod (forging) buckle, the steering knuckle (forging or casting), subframe (casting or extrusion), ball head (forging) and shock absorber cylinder are not allowed to be damaged.

[0188] The swing arm 30 is connected to the subframe 20 by the bushing 10. In order to prevent the subframe 20 from failing before the swing arm 30, the failure force of the bushing 10 should be less than the failure force of the subframe 20 but greater than or equal to the failure force of the swing arm 30. Assuming that the failure force of the subframe 20 is F2 and the failure force of the swing arm is F3, when the radius r of the bushing 10 and the thickness of the stopper 22 are fixed, the opening size ratio of the notch 2011 is:

[0189]

[0190] Therefore, by designing the failure force of the bushing 10 , components with a lower failure priority, such as the subframe 20 , can be protected, thereby increasing the overall safety of the vehicle 100 .

[0191] In some embodiments, see Fig. 9 , the swing arm 30 is connected to the wheel 40.

[0192] In some embodiments, the bushing 10 is also used as a connection bushing for other components on the vehicle body and / or chassis.

[0193] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0194] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0195] The embodiments, implementation methods and related technical features of the present application can be combined and replaced with each other without conflict.

[0196] The above are only preferred embodiments of the present application and do not constitute any form of limitation to the present application. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application.

Claims

1. A bushing (10), characterized in that: include: A core body (1) and an outer shell structure (2), wherein the outer shell structure (2) is sleeved outside the core body (1), and the core body (1) is confined within the outer shell structure (2); a guide portion (201) is formed on the outer shell structure (2), and the guide portion (201) is used to guide the outer shell structure (2) to disconnect from the guide portion (201) when the core body (1) presses the outer shell structure (2).

2. The bushing (10) according to claim 1, characterized in that The outer shell structure (2) comprises an outer cylinder (21) and a limiting member (22); the outer cylinder (21) is sleeved on the core (1), and the outer cylinder (21) is configured to be detachable along the circumferential direction; the limiting member (22) is connected to the outer cylinder (21) and is used to limit the separation of the outer cylinder (21) along the circumferential direction; and the guide portion (201) is arranged on the limiting member (22).

3. The bushing (10) according to claim 2, characterized in that The guiding portion (201) is a notch (2011), a first slit (2012) or a thinning portion (2013) arranged on the limiting member (22).

4. The bushing (10) according to claim 3, characterized in that The guiding portion (201) is the notch (2011), and the notch (2011) is semicircular, semi-elliptical, rectangular or triangular.

5. The bushing (10) according to claim 3, characterized in that The guide portion (201) is the notch (2011), and the ratio of the opening depth of the notch (2011) to the radius of the bushing (10) is less than 0.

5.

6. The bushing (10) according to claim 2, characterized in that The core body (1) has a channel (101) extending along the axial direction of the core body (1), the limiting member (22) is provided with an avoidance hole (2221) corresponding to the channel (101), and the guide portion (201) is located at the edge of the avoidance hole (2221).

7. The bushing (10) according to claim 6, characterized in that The limiting member (22) comprises a side plate (221), wherein the side plate (221) surrounds the outer cylinder (21) along the circumference of the outer cylinder (21) and is connected to the outer cylinder (21).

8. The bushing (10) according to claim 7, characterized in that The limiting member (22) further comprises a bottom plate (222), the side plate (221) being arranged on a side surface of the bottom plate (222), the bottom plate (222) being located on the end of the outer cylinder (21), the bottom plate (222) being used to limit the core (1) from escaping from the outer cylinder (21), and the avoidance hole (2221) being opened on the bottom plate (222).

9. The bushing (10) according to any one of claims 2 to 8, characterized in that The outer cylinder (21) comprises a plurality of sub-shells (210) assembled together along its axis, and the limiting member (22) is used to limit the plurality of sub-shells (210) from being separated from each other.

10. The bushing (10) according to claim 9, characterized in that A second gap (211) is formed between two adjacent sub-shells (210), and the number of the guide portions (201) is equal to the number of the second gaps (211).

11. The bushing (10) according to claim 9, characterized in that Along the circumferential direction of the outer cylinder (21), the angle between the guide portion (201) and the second slit (211) is 0° to 45°.

12. The bushing (10) according to claim 9, characterized in that The guide portion (201) and the second slit (211) are arranged in a one-to-one correspondence.

13. The bushing (10) according to claim 9, characterized in that When the limiting member (22) includes a side plate (221) and a bottom plate (222), the side plate (221) includes a plurality of sub-side plates (2211) arranged at intervals on the bottom plate (222), the sub-side plates (2211) are arranged in a one-to-one correspondence with the sub-shell (210), and the guide portion (201) corresponds to the gap between two adjacent sub-side plates (2211).

14. The bushing (10) according to claim 13, characterized in that The sub-side plate (2211) is welded to the sub-housing (210) or connected via fasteners.

15. The bushing (10) according to claim 9, characterized in that At least one side edge (212) of the sub-shell (210) is hinged to the corresponding side edge (212) of another adjacent sub-shell (210), and at least one side edge (212) of the sub-shell (210) is independent of the corresponding side edge (212) of another adjacent sub-shell (210).

16. The bushing (10) according to claim 15, characterized in that The number of the sub-shells (210) is two, and the two sub-shells (210) are respectively a first sub-shell (2101) and a second sub-shell (2102), wherein the first sub-shell (2101) has a first side (2121) and a second side (2122) relative to each other, and the second sub-shell (2102) has a third side (2123) and a fourth side (2124) relative to each other, wherein the first side (2121) corresponds to the fourth side (2124) and is hingedly connected via a hinge (213), and the second side (2122) corresponds to the third side (2123) and is independent of each other.

17. The bushing (10) according to any one of claims 1 to 16, characterized in that The guide portion (201) is also configured to guide the outer shell structure (2) to disconnect from the guide portion (201) when the force between the core (1) and the outer shell structure (2) reaches a limit extrusion force corresponding to the guide portion (201).

18. The bushing (10) according to claim 17, characterized in that The guide portion (201) is a semi-elliptical notch (2011), and the limit extrusion pressure satisfies the following relationship: Wherein, F is the limit extrusion pressure, r is the radius of the bushing (10), y1 is the distance between the notch (2011) and the center of the bushing (10), T is the thickness of the shell structure (2), σ τ is the tensile strength of the material of the outer shell structure (2), a is the depth of the notch (2011), and b is half the opening width of the notch (2011).

19. The bushing (10) according to any one of claims 1 to 18, characterized in that The core (1) comprises an inner cylinder (11) and an elastic member (12); a channel (101) is provided on the inner cylinder (11); and the elastic member (12) is provided between the inner cylinder (11) and the outer shell structure (2).

20. The bushing (10) according to claim 19, characterized in that The elastic member (12) is an elastic sleeve (121), and the inner cylinder (11) is inserted into the elastic sleeve (121).

21. The bushing (10) according to claim 20, characterized in that The elastic sleeve (121) comprises a first straight tube section (1211) and a second straight tube section (1212), wherein the inner diameter of the first straight tube section (1211) is greater than the inner diameter of the second straight tube section (1212), and the second straight tube section (1212) is located at both ends of the first straight tube section (1211).

22. The bushing (10) according to claim 21, characterized in that A boss (111) is protruding from the middle section of the inner cylinder (11), and the boss (111) is correspondingly arranged in the first straight cylinder section (1211), and the outer diameter of the boss (111) is greater than the inner diameter of the second straight cylinder section (1212).

23. The bushing (10) according to claim 22, characterized in that The elastic sleeve (121) further comprises a tapered cylinder section (1213), wherein the tapered cylinder section (1213) extends from the first straight cylinder section (1211) to the second straight cylinder section (1212).

24. The bushing (10) according to claim 23, characterized in that The elastic sleeve (121) further comprises a radial extension section (1214), wherein the radial extension section (1214) is connected to an end of the second straight tube section (1212) away from the first straight tube section (1211), and the radial extension section (1214) extends radially along the elastic sleeve (121) and protrudes from the outer surface of the second straight tube section (1212).

25. The bushing (10) according to claim 19, characterized in that The elastic sleeve (121) is formed by splicing together a plurality of elastic sheets (1210).

26. The bushing (10) according to claim 19, characterized in that The length of the elastic member (12) is smaller than the length of the inner cylinder (11) and smaller than the length of the outer shell structure (2). The bushing (10) further comprises a buffer member (3), wherein the buffer member (3) is sleeved outside the inner cylinder (11) and is located inside the outer shell structure (2), and the buffer member (3) is also supported on the end of the elastic member (12).

27. The bushing (10) according to claim 26, characterized in that The buffer component (3) is connected to the outer shell structure (2).

28. The bushing (10) according to claim 26 or 27, characterized in that The material of the buffer (3) includes at least one of rubber and silicone.

29. A vehicle (100), characterized in that: Comprising a bushing (10) according to any one of claims 1 to 28.

30. The vehicle (100) according to claim 29, characterized in that The vehicle (100) comprises a subframe (20) and a swing arm (30), and the bushing (10) connects the subframe (20) and the swing arm (30).

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