Bushing and vehicle

Abstract

The application relates to a bushing and a vehicle. The bushing comprises a core and a shell structure, the shell structure is sleeved outside the core, the core 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 break off from the guide part when the core extrudes the shell structure. Through the technical scheme, when the bushing fails, generally only the shell structure is damaged, and the core is basically kept intact, so that when the bushing is repaired, only the shell structure needs to be repaired or replaced, and the core can be continuously used, so that the cost of bushing repair 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

[0002] In some extreme working conditions, it is necessary to control the failure of the bushing so that the mechanical equipment deforms to a minimum when it fails. The failure design of the bushing in the related art is permanent damage to the bushing, and the entire bushing cannot be used again after failure, thereby causing the repair cost of the bushing to increase. SUMMARY

[0003] 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 a first aspect of the present application, a bushing is provided, comprising: a core and a shell structure, the shell structure being sleeved on the core, the core being limited in the shell structure, a guide portion being formed on the shell structure, the guide portion being used to guide the shell structure to break away from the guide portion when the core extrudes the shell structure.

[0005] Optionally, the shell structure comprises an outer cylinder and a limiting piece, the outer cylinder being sleeved on the core, and the outer cylinder being configured to be separable in the circumferential direction, the limiting piece being connected with the outer cylinder and being used to limit the separation of the outer cylinder in the circumferential direction, and the guide portion being arranged on the limiting piece.

[0006] Optionally, the guide portion is a notch, a first gap or a thinned portion arranged on the limiting piece.

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

[0008] Optionally, the guide 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 has a channel extending in an axial direction of the core, the limiting piece is provided with an avoiding hole corresponding to the channel, and the guide portion is located at an edge of the avoiding hole.

[0010] Optionally, the limiting piece comprises a side plate, the side plate surrounds the outer cylinder in the circumferential direction of the outer cylinder and is connected with the outer cylinder.

[0011] Optionally, the limiting piece further comprises a bottom plate, the side plate is arranged on one side surface of the bottom plate, the bottom plate is located on an end portion of the outer cylinder, the bottom plate is used to limit the core from coming out of the outer cylinder, and the avoiding hole is arranged on the bottom plate.

[0012] Optionally, the outer cylinder comprises a plurality of sub-shells spliced along the axis thereof, and the limiting member is configured to limit the plurality of sub-shells from separating 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, the included angle between the guide portion and the second gap is 0°-45° along the circumference of the outer cylinder.

[0015] Optionally, the guide portion is arranged in one-to-one correspondence with the second gap.

[0016] Optionally, when the limiting member comprises a side plate and a bottom plate, the side plate comprises a plurality of sub-side plates arranged at intervals 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 the gap between two adjacent sub-side plates.

[0017] Optionally, the sub-side plates are welded or connected by fasteners to the sub-shells.

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

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

[0020] Optionally, the guide portion is further configured to guide the shell structure to break away from the guide portion when the acting force between the core and the shell structure reaches the 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 force, 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 comprises an inner cylinder and an elastic member, the inner cylinder is provided with a channel, and the elastic member is arranged between the inner cylinder and the shell structure.

[0025] Optionally, the elastic member is an elastic sleeve, and the inner cylinder is arranged in the elastic sleeve.

[0026] Optionally, the elastic sleeve comprises a first straight cylinder segment and a second straight cylinder segment, an inner diameter of the first straight cylinder segment is greater than an inner diameter of the second straight cylinder segment, and the second straight cylinder segment is arranged at both ends of the first straight cylinder segment.

[0027] Optionally, a boss is arranged on a middle segment of the inner cylinder, the boss is arranged in the first straight cylinder segment, and an outer diameter of the boss is greater than the inner diameter of the second straight cylinder segment.

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

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

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

[0031] Optionally, a length of the elastic member is less than a length of the inner cylinder and less than a length of the shell structure, the bushing further comprises a buffer member, the buffer member is arranged outside the inner cylinder and in the shell structure, and the buffer member is further supported on end portions of the elastic member.

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

[0033] Optionally, a material of the buffer member comprises at least one of rubber and silica gel.

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

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

[0036] The bushing provided by the embodiment of the present application comprises a core and a shell structure distributed in sequence from inside to outside, and the core and the shell structure can interact with each other. The guide part on the shell structure can guide the shell structure to be disconnected from the guide part when the core and the shell structure interact with each other, so that the shell structure is opened, the core can be separated from the shell structure, and the bushing is disabled. During the process of disabling the bushing, usually only the shell structure is damaged, and the core remains basically intact, so that only the shell structure needs to be repaired or replaced when the bushing is repaired, and the core can continue to be used, thereby reducing the cost of repairing the bushing.

[0037] Other features and advantages of the present application will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained according to these drawings without creative labor for those skilled in the art.

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

[0040] Figure 1 is a perspective structural schematic view of the bushing provided in the exemplary embodiment of the present application;

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

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

[0043] Figure 4 is an enlarged schematic view of part C in Figure 3

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

[0045] Figure 6 is a partial structural schematic view of another limiting part in the bushing provided in the exemplary embodiment of the present application;

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

[0047] ​Figure 8 is a top view structural schematic diagram of another limiting member in a bushing provided in an exemplary embodiment of the present application;

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

[0049] Legend of reference signs:

[0050] 10, bushing;

[0051] 1, core; 101, channel;

[0052] 11, inner cylinder; 111, boss;

[0053] 12, elastic member;

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

[0055] 1211, first straight cylinder segment;

[0056] 1212, second straight cylinder segment;

[0057] 1213, tapered cylinder segment;

[0058] 1214, radial extension segment;

[0059] 2, shell structure; 201, guide portion; 2011, notch; 2012, first gap; 2013, thinned portion;

[0060] 21, outer cylinder;

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

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

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

[0064] 22, limiting member; 221, side plate; 2211, sub-side plate; 222, bottom plate; 2221, avoiding hole;

[0065] 3, buffer member;

[0066] 100, vehicle;

[0067] 20, auxiliary frame; 30, swing arm; 40, wheel. DETAILED DESCRIPTION

[0068] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative effort belong to the protection scope of the present application.

[0069] According to a first aspect of the present application, referring to Figures 1 to 8 The present application provides a bushing 10, which comprises a core 1 and a shell structure 2, the shell structure 2 is sleeved outside the core 1, the core 1 is limited in the shell structure 2, and a guide portion 201 is formed on the shell structure 2, which is used to guide the shell structure 2 to break away from the guide portion 201 when the core 1 extrudes the shell structure 2.

[0070] The bushing 10 is a connecting piece, which can be used to connect different components in a vehicle 100. For the convenience of description, the following will be described by taking the bushing 10 connecting a first component and a second component as an example. As an example, when the bushing 10 is used as a connecting piece, the core 1 can be connected with the first component, the shell structure 2 can be connected with the second component, and the first component and the second component are connected by being connected with the bushing 10 respectively.

[0071] Exemplarily, the first component is one of a subframe 20 and a 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 distributed in turn from inside to outside. Although the core 1 is limited 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 formed, so that the core 1 and the shell structure 2 can interact with each other. For example, referring to Figure 1 The core 1 can extrude 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 X-axis, the reverse direction of the Y-axis, etc.

[0073] It should be noted that the core 1 being limited in the shell structure 2 means that the core 1 is not easy to be separated from the shell structure 2. As an example, the core 1 is interference-fitted with the shell structure 2, the core 1 is not easy to be separated from the shell structure 2, or the core 1 is wrapped in the shell structure 2, 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 being separated.

[0074] The guide 201 on the shell structure 2 can guide the shell structure 2 to break away from the guide 201 when the force interaction between the core 1 and the shell structure 2 occurs, so that the shell structure 2 is opened, and the core 1 can be separated from the shell structure 2, that is, the connection between the first component and the second component is lost.

[0075] It should be noted that the guide 201 on the shell structure 2 can be one or more. When the guide 201 is more than one, the shell structure 2 can be broken into multiple parts, so that the shell structure 2 is opened.

[0076] As can be seen, when the bushing 10 is lost, usually only the shell structure 2 is damaged, and the core 1 is basically intact, so that when the bushing 10 is repaired, only the 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, referring to Figures 1 to 8 , the guide 201 is further configured to guide the shell structure 2 to break away from the guide 201 when the force between the core 1 and the shell structure 2 reaches the limit extrusion force corresponding to the guide 201.

[0078] In order to ensure that the shell structure 2 breaks away from the guide 201, usually the guide 201 is designed as a mechanical weak point on the shell structure 2. As an example, referring to Figure 6 , Figure 7 and Figure 8 , the guide 201 can be a notch 2011, a first gap 2012 or a thinned portion 2013 on the shell structure 2. Therefore, by designing the structure of the guide 201, the failure force of the bushing 10 can be controlled. Here, the failure force of the bushing 10 refers to the limit extrusion force between the core 1 and the shell structure 2 when the shell structure 2 breaks away and causes the bushing 10 to fail. Usually, the structure of the guide 201 will affect the stress distribution on the shell structure 2, and then affect the size of the limit extrusion force. Usually, different guides 201 correspond to different limit extrusion forces.

[0079] Referring to Figure 8 , taking the thinned portion as an example, usually the greater the thickness of the thinned portion, the higher the mechanical strength of the thinned portion, the more difficult the shell structure 2 is to be opened, and the greater the limit extrusion force (that is, the failure force of the bushing 10); on the contrary, the smaller the thickness of the thinned portion, the weaker the mechanical strength of the thinned portion, the easier the shell structure 2 is to be opened, and the smaller the limit extrusion force.

[0080] That is, only when the force exerted by the core 1 on the shell structure 2 reaches the limit extrusion force corresponding to the guide portion 201 on the shell structure 2, i.e. the failure force of the bushing 10, can the shell structure 2 be opened, realizing the failure control of the bushing 10.

[0081] In addition, the failure control of the bushing 10 is realized through mechanical design, without the need to introduce an additional control system, which is conducive to controlling the generation cost of the vehicle 100.

[0082] In some embodiments, referring to Figure 1 , the shell structure 2 includes an outer cylinder 21 and a limiting piece 22, the outer cylinder 21 is sleeved on the core 1, and the outer cylinder 21 is configured to be separable in the circumferential direction, the limiting piece 22 is connected with the outer cylinder 21 and is used to limit the separation of the outer cylinder 21 in the circumferential direction, and the guide portion 201 is arranged on the limiting piece 22.

[0083] Here, the outer cylinder 21 being configured to be separable in the circumferential direction 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 part of the side wall is in a disconnected or separated state from other parts in the circumferential direction of the outer cylinder 21. As an example, the outer cylinder 21 includes a curved side wall, which has a leading end and a trailing end corresponding to each other but is completely disconnected between the leading end and the trailing end in the circumferential direction of the outer cylinder 21. As an example, the outer cylinder 21 is formed by splicing a plurality of independently formed sub-side walls, and the different sub-side walls are separable.

[0084] Through the above arrangement, when the force interaction occurs between the core 1 and the shell structure 2, the limiting piece 22 will be disconnected first, and after the limiting piece 22 is disconnected, the outer cylinder 21 will be unable to be limited, and then the outer cylinder 21 will be opened in the circumferential direction, and then the core 1 can be separated from the shell structure 2, i.e. the bushing 10 fails.

[0085] As can be seen, in this case, only the limiting piece 22 in the shell structure 2 will be damaged when the bushing 10 fails, and the outer cylinder 21 in the shell structure 2 only switches the state, and when repairing the bushing 10, only the limiting piece 22 needs to be repaired or replaced, 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 limiting piece 22 is connected with the outer cylinder 21, which can be welding, sleeving, screwing or riveting of the limiting piece 22 with the outer cylinder 21. The limiting piece 22 can be a circular ring or a U-shaped, which is not limited here.

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

[0088] In some embodiments, referring to Figures 3 to 8 , the guide part 201 is a notch 2011, a first gap 2012 or a thinned part 2013 provided on the limiting member 22.

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

[0090] In some embodiments, the shell structure 2 can also be provided as only including the outer cylinder 21, and the limiting member 22 is omitted, but the outer cylinder 21 is a one-piece structure, that is, the side wall of the outer cylinder 21 is a continuous structure in the circumferential direction of the outer cylinder 21. That is, the outer cylinder 21 is not configured to be separable in the circumferential direction. At this time, the guide part 201 can be a notch 2011, a first gap 2012 or a thinned part 2013 directly provided on the outer cylinder 21.

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

[0092] Specifically, the notch 2011 is formed by partially concave on the side of the limiting member 22. The number of notches 2011 on the limiting member 22 can be one or more. The shape of the notch 2011 can also be designed according to requirements. As an example, referring to Figure 4 , the notch 2011 can be designed as a triangle, or referring to Figure 6 , the notch 2011 can also be designed as a semi-elliptical shape.

[0093] By setting the guide part 201 on the limiting member 22 as the notch 2011, the notch 2011 will be formed as the weakest area on the limiting member 22, so that when the limiting member 22 is stressed, the position of the notch 2011 on the limiting member 22 will produce stress concentration, thereby better guiding the limiting member 22 to break off from the area where the notch 2011 is located.

[0094] In addition, by setting the guide part 201 as the notch 2011, the opening shape, opening depth, opening angle, opening size, etc. of the notch 2011 can be controlled to effectively control the failure force of the bushing 10, 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 force corresponding to the guide portion 201 satisfies the following relationship:

[0096]

[0097] where F is the limit extrusion force, 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 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 following takes the guide portion 201 as the notch 2011 provided on the limiting piece 22, and the notch 2011 is semi-elliptical, as an example to illustrate the failure force control of the bushing 10.

[0099] The failure force of the bushing 10 can be calculated based on the stress concentration formula, as shown in the following formula: Figure 3 As shown in the formula, the force on the bushing 10 is inversely proportional to the Y-axis direction. Please continue to refer to 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), then the force on the limiting piece 22 at the notch 2011 is F1, where:

[0101]

[0102] Assuming that the thickness of the limiting piece 22 is T, then the average stress of the bushing 10 is σ T , where:

[0103]

[0104] Please refer to 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 coefficient at the notch 2011 is K t , where:

[0105]

[0106] Further assuming that the tensile strength of the material of the limiting piece 22 is σ τ , then the failure force calculation formula of the bushing 10 is:

[0107]

[0108] As can be seen from the failure force calculation formula of the bushing 10, in the process of designing 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 limiting member 22, and the material of the limiting member 22 are determined, the failure force of the bushing 10 can be accurately adjusted by adjusting the opening width and depth of the notch 2011, so that the control of the failure force of the bushing 10 is more simple and correct.

[0109] In addition, the stress concentration parameter can be controlled by changing the opening angle of the notch 2011, so as to control 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 be kept consistent, and only the notch 2011 on the limiting member 22 needs to be modified to obtain the 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 beneficial to reduce the manufacturing difficulty of 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 of the radius of the bushing 10, the effectiveness of the stress concentration coefficient can be ensured, so as to ensure 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, referring to Figures 1 to 5 , the core 1 has a channel 101 extending along the axial direction of the core 1, the limiting member 22 is provided with a relief hole 2221 corresponding to the channel 101, and the guide portion 201 is located at the edge of the relief hole 2221.

[0113] A channel 101 is arranged on the core 1, which can be used for the first component's connecting structure (such as a movable pin) 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, and the limiting member 22 is connected to the outer cylinder 21, in order to avoid the limiting member 22 interfering with the first component's connecting structure used to extend into the channel 101, an avoiding hole 2221 is also arranged on the limiting member 22, which corresponds to the channel 101. It can be foreseen that the first component's connecting structure will also pass through the avoiding hole 2221 when it extends into the channel 101. In this way, when the first component exerts a pressing force on the core 1, the core 1 will transmit the pressing force to the shell structure 2, and the limiting member 22 will be stressed synchronously, and the guide part 201 (such as the notch 2011) arranged at the edge of the avoiding hole 2221 can better realize stress concentration, thereby better controlling the failure force of the bushing 10.

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

[0115] In some embodiments, please refer to Figure 1 , the number of avoiding holes 2221 on the limiting member 22 is one. The guide part 201 is a notch 2011, and the number of notches 2011 is multiple, and the multiple notches 2011 are distributed at intervals on the edge of the avoiding hole 2221.

[0116] In some embodiments, the avoiding hole 2221 is arranged concentrically with the channel 101, and the opening area of the avoiding 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 orthogonal projection of the channel 101 is located in the orthogonal projection of the avoiding hole 2221.

[0117] In some embodiments, please refer to Figure 1 , Figure 5 and Figure 8 , the limiting member 22 comprises a side plate 221, which surrounds the outer cylinder 21 in the circumferential direction of the outer cylinder 21 and is connected to the outer cylinder 21.

[0118] By arranging the side plate 221 in the circumferential direction of the outer cylinder 21 and connecting the side plate 221 to the outer cylinder 21, the separation of the outer cylinder 21 in the circumferential direction can be limited.

[0119] The way in which the side plate 221 is connected to the outer cylinder 21 can be set according to actual conditions, for example, the side plate 221 can be welded to the outer cylinder 21, or the side plate 221 can be threadedly connected to the outer cylinder 21 through a threaded fastener.

[0120] As an example, please refer to 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 circumferential surface of the outer cylinder body 21 and is in interference fit with the outer cylinder body 21. In the case where the limiting piece 22 only includes the annular side plate 221, the central through hole defined by the side plate 221 is an avoiding hole 2221.

[0121] In some embodiments, referring to Figure 1 and Figure 5 , the limiting piece 22 further includes a bottom plate 222, the 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 body 21, and the bottom plate 222 is used to limit the core body 1 from being taken out of the outer cylinder body 21. The avoiding hole 2221 is arranged on the bottom plate 222.

[0122] In the above structure, in addition to being used to limit the outer cylinder body 21 from being separated along the circumference, the limiting piece 22 can also limit the core body 1 from being taken out of the outer cylinder body 21 along the axial direction of the outer cylinder body 21 by using the bottom plate 222. In this case, the core body 1 and the shell structure 2 can be in a tight fit relationship or a loose fit relationship. In order to avoid the bottom plate 222 affecting the connection between the core body 1 and the first component, the avoiding hole 2221 is arranged on the bottom plate 222.

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

[0124] In some embodiments, referring to Figure 1 and Figure 5 , the outer cylinder body 21 includes a plurality of sub-housings 210 spliced along the axis thereof, and the limiting piece 22 is used to limit the plurality of sub-housings 210 from being separated from each other.

[0125] Here, the plurality means two or more than two. The number of the sub-housings 210 is a plurality, each of the sub-housings 210 is independently formed, and all of the sub-housings 210 are enclosed together to form the outer cylinder body 21. As an example, the number of the sub-housings 210 is three, and the three sub-housings 210 are sequentially distributed, and any one of the sub-housings 210 is located between the other two sub-housings 210. Here, the enclosure can be understood as that all of the sub-housings 210 are spliced together around the same center line (i.e., the axis of the outer cylinder body 21).

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

[0127] By setting the outer cylinder 21 to be composed of a plurality of sub-housings 210, when the force interaction between the core 1 and the shell structure 2 occurs, the outer cylinder 21 will be opened into a plurality of sub-housings 210 after the limiting piece 22 is broken, and then the core 1 can be separated from the shell structure 2, and the bushing 10 is disabled. When repairing the bushing 10, the outer cylinder 21 can be restored by simply re-combining all the sub-housings 210, thereby reducing the difficulty of repairing the bushing 10.

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

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

[0130] The number of sub-housings 210 in the outer cylinder 21 is equal to the number of second gaps 211, and when the limiting piece 22 is broken along the guide portion 201, the number of guide portions 201 is consistent with the number of fragments obtained by breaking the limiting piece 22. By setting the number of guide portions 201 to be equal to the number of second gaps 211, the outer cylinder 21 and the limiting piece 22 can be split into equal sub-structures, further improving the opening effect of the shell structure 2 and 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.

[0131] In some embodiments, referring to Figure 3 , the included angle between the guide portion 201 and the second gap 211 along the circumference of the outer cylinder 21 is 0°-45°.

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

[0133] As an example, the included 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 gaps 211 are positions where the connection strength between different sub-shells 210 of the outer cylinder 21 is weak, and the guide portions 201 are positions where the mechanical strength of the limiting member 22 is weak. By controlling the included angle between the guide portions 201 and the second gaps 211 to be less than or equal to 45°, the guide portions 201 and the second gaps 211 are closer to each other, which is beneficial to the synchronous opening of the outer cylinder 21 when the limiting member 22 breaks, can further improve the opening effect of the shell structure 2, improve the synchronism of the opening of the shell structure 2 and the failure of the bushing 10, and thus ensure the control of the failure of the bushing 10.

[0135] In some embodiments, referring to Figure 3 , the guide portions 201 are arranged one-to-one with the second gaps 211.

[0136] The guide portions 201 are arranged one-to-one with the second gaps 211, that is, the number of the guide portions 201 is equal to the number of the second gaps 211, and the positions of the guide portions 201 correspond to the positions of the second gaps 211, that is, the included angle between the guide portions 201 and the second gaps 211 is 0°. In this way, the bushing 10 can directly fail at the moment when the failure force is reached.

[0137] In some embodiments, referring to Figure 3 , in the case where the limiting member 22 includes the side plate 221 and the bottom plate 222, the side plate 221 includes a plurality of sub-side plates 2211 arranged on the bottom plate 222 at intervals, the sub-side plates 2211 are arranged one-to-one with the sub-shells 210, and the guide portions 201 correspond to the gaps between adjacent two sub-side plates 2211.

[0138] In this structure, the side plate 221 can not be arranged as a continuous plate body, and the side plate 221 includes a plurality of sub-side plates 2211 arranged at intervals, each sub-side plate 2211 is indirectly connected together by being connected to the bottom plate 222, so that the side plate 2211 can also limit the sub-shells 210.

[0139] The sub-side plates 2211 are arranged one-to-one with the sub-shells 210, that is, the number of the sub-side plates 2211 is equal to the number of the sub-shells 210, and the positions of the sub-side plates 2211 correspond to the positions of the sub-shells 210. In this way, the gaps between adjacent two sub-side plates 2211 correspond to the second gaps 211 between adjacent two sub-shells 210, so that the second gaps 211 between adjacent two sub-shells 210 can be exposed through the gaps between adjacent two sub-side plates 2211. The guide portions 201 correspond to the gaps between adjacent two sub-side plates 2211 and the second gaps 211 between adjacent two sub-shells 210, so as to improve the opening effect of the shell structure 2, further improve the synchronism of the opening of the shell structure 2 and the failure of the bushing 10, and thus ensure the control of the failure of the bushing 10.

[0140] In some embodiments, referring to Figure 1 , the sub-side plates 2211 are welded or connected by fasteners with the sub-shells 210.

[0141] By connecting the sub-side plate 2211 and the sub-housing 210 together, the stability and reliability of the structure 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 and the sub-housing 210 are connected together by fasteners. Specifically, the sub-side plate 2211 and the sub-housing 210 are both provided with connecting through holes corresponding in position, and the fasteners are passed through the connecting through holes to connect and fix the sub-side plate 2211 and the sub-housing 210. The fasteners herein can be threaded fasteners or non-threaded fasteners. When the fasteners are threaded fasteners, the threaded fasteners include at least one of a screw and a bolt.

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

[0144] That is, not all side edges 212 of the outer cylinder 21 are hinged together, nor are all side edges 212 independent of each other, but a part of the side edges 212 of the outer cylinder 21 are hinged together, and another part of the side edges 212 are independent of each other. Here, the side edge 212 of the sub-housing 210 refers to the side edge in the circumferential direction of the outer cylinder 21.

[0145] Hinging the side edges 212 of different sub-housings 210 together can reduce the difficulty of assembling the sub-housings 210 into the outer cylinder 21, and arranging the side edges 212 of different sub-housings 210 to be independent of each other (i.e., the side edges 212 are not connected) facilitates opening the outer cylinder 21. Through the above arrangement, both the need for opening the outer cylinder 21 and the difficulty of assembling the outer cylinder 21 are taken into account.

[0146] In order to more clearly illustrate the connection relationship between the sub-housings 210, the following examples are given.

[0147] As an example, the outer cylinder 21 includes three sub-housings 210, and has a total of six side edges 212 in the circumferential direction of the outer cylinder 21. In terms of the connection relationship, four of the side edges 212 can be hinged together two by two, and the other two side edges 212 can be independent of each other, or two of the side edges 212 can be hinged together, and the other four side edges 212 can be independent of each other. That is, 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 can be hinged together or independent of each other.

[0148] As an example, please refer to Figure 1 , one side edge 212 of one sub-housing 210 is hinged with the corresponding side edge 212 of another sub-housing 210 adjacent to it, which can be connected through a hinge 213.

[0149] In some embodiments, please refer to Figure 5 , the number of sub-housings 210 is two, and the two sub-housings 210 are respectively a first sub-housing 2101 and a second sub-housing 2102, the first sub-housing 2101 has opposite first and second side edges 2121 and 2122, and the second sub-housing 2102 has opposite third and fourth side edges 2123 and 2124, wherein the first side edge 2121 corresponds to the fourth side edge 2124 and is hinged through the hinge 213, and the second side edge 2122 corresponds to the third side edge 2123 and is independent of each other.

[0150] When the liner 10 fails, the second side edge 2122 and the third side edge 2123 are first separated, and then the first sub-housing 2101 and the second sub-housing 2102 are respectively rotated away from each other around the hinge 213, so as to realize the opening of the outer cylinder 21.

[0151] In addition, by controlling the number of sub-housings 210 to be two, both the opening effect of the shell structure 2 and the assembly difficulty of the shell structure 2 can be reduced, and the comprehensive performance of the liner 10 can be improved.

[0152] In some embodiments, please refer to Figure 5 , the core 1 comprises an inner cylinder 11 and an elastic member 12, the inner cylinder 11 is provided with a passage 101, and the elastic member 12 is arranged between the inner cylinder 11 and the shell structure 2.

[0153] The core 1 has a passage 101, which is specifically provided on the inner cylinder 11.

[0154] In the above structure, the liner 10 is an elastic connecting member. The elastic member 12 is arranged between the inner cylinder 11 and the shell structure 2, so that when the force interaction between the inner cylinder 11 and the shell structure 2 occurs, the elastic member 12 can play a role in reducing wear, reducing vibration and noise.

[0155] In some embodiments, please refer to Figure 2 and Figure 5 , the elastic member 12 is an elastic sleeve 121, and the inner cylinder 11 is arranged in the elastic sleeve 121.

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

[0157] In some embodiments, referring to Figure 2 and Figure 5 The elastic sleeve 121 comprises a first straight cylinder segment 1211 and a second straight cylinder segment 1212, wherein the inner diameter of the first straight cylinder segment 1211 is larger than that of the second straight cylinder segment 1212, and the second straight cylinder segment 1212 is located at both ends of the first straight cylinder segment 1211.

[0158] By setting the elastic sleeve 121 to comprise the first straight cylinder segment 1211 and the second straight cylinder segment 1212 with different inner diameters, a step difference is formed between the first straight cylinder segment 1211 and the second straight cylinder segment 1212, which can increase the elasticity of the elastic sleeve 121 and improve the buffering capacity of the bushing 10.

[0159] In addition, the first straight cylinder segment 1211 and the second straight cylinder segment 1212 have different inner diameters, so that the side wall of the elastic sleeve 121 is formed as a folded side wall, which is beneficial to forming gaps between the elastic sleeve 121 and the inner cylinder body 11 and between the elastic sleeve 121 and the shell structure 2. These gaps can be used to accommodate lubricant, thereby reducing the wear between the elastic sleeve 121 and the inner cylinder body 11 and between the elastic sleeve 121 and the shell structure 2, and prolonging the service life of the bushing 10.

[0160] In some embodiments, referring to Figure 2 The middle segment of the inner cylinder body 11 is provided with a boss 111, the boss 111 is arranged in the first straight cylinder segment 1211, and the outer diameter of the boss 111 is larger than the inner diameter of the second straight cylinder segment 1212.

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

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

[0163] In some embodiments, referring to Figure 2 The elastic sleeve 121 further comprises a tapered cylinder segment 1213, which extends from the first straight cylinder segment 1211 to the second straight cylinder segment 1212.

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

[0165] Since the elastic sleeve 121 is the main relevant component of the stiffness of the bushing 10, by controlling the thickness of the side wall of the elastic sleeve 121 and the angle of the inclined surface of the conical section 1213, the stiffness of the bushing 10 can be controlled.

[0166] In some embodiments, referring to Figure 2 , the elastic sleeve 121 further comprises a radial extension section 1214, the radial extension section 1214 is connected to one end of the second straight section 1212 away from the first straight 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 section 1212.

[0167] The radial extension section 1214 can cooperate with the conical section 1213 to further increase the stiffness 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, so that the distance between the radial extension section 1214 and the inner surface of the shell structure 2 can be shortened, which is beneficial to improve the sealing performance inside the bushing 10.

[0168] In some embodiments, referring to Figure 5 , the elastic sleeve 121 is formed by splicing a plurality of elastic pieces 1210.

[0169] In this way, the manufacturing difficulty of the elastic sleeve 121 can be reduced. In addition, when the elastic sleeve 121 cooperates with the inner cylinder 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 pieces 1210, and the two elastic pieces 1210 are symmetrically arranged.

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

[0172] In some embodiments, referring to Figure 5The length of the elastic member 12 is less than the length of the inner cylinder 11 and the length of the shell structure 2. The bushing 10 further comprises a buffer member 3, which is sleeved on the outer surface of the inner cylinder 11 and located in the shell structure 2, and the buffer member 3 is further 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 shell structure 2 are all the dimensions in the axial direction of the bushing 10. Since the length of the elastic member 12 is less than the smaller one of the length of the inner cylinder 11 and the length of the shell structure 2, there is a surplus accommodation space between the inner cylinder 11 and the 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 member 3 generally has a certain elasticity, so the buffer member 3 can provide axial stiffness for the bushing 10. In addition, the buffer member 3 can further improve the sealing performance of the bushing 10, which is beneficial to the preservation of the lubricant between the elastic member 12 and the inner cylinder 11 and reduces the wear inside the bushing 10.

[0175] In some embodiments, when the shell structure 2 comprises a limiting member 22, the limiting member 22 comprises a side plate 221 and a bottom plate 222, and the buffer member 3 is located between the bottom plate 222 and the elastic member 12, 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 comprises a radial extension segment 1214, the buffer member 3 is supported on the radial extension segment 1214, that is, the radial extension segment 1214 supports the buffer member 3.

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

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

[0179] In some embodiments, referring to Figure 2 and Figure 5 , the buffer member 3 is connected with the shell structure 2.

[0180] As an example, the buffer member 3 and the shell structure 2 are connected together by fasteners. Specifically, the buffer member 3 and the shell structure 2 are both provided with corresponding connecting through holes, and the fasteners are passed through the connecting through holes to connect and fix the buffer member 3 and the shell structure 2.

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

[0182] In some embodiments, in the case that the shell structure 2 comprises the cylinder body 21 and the limiting piece 22, a connecting through hole corresponding in position is formed on each of the buffer 3, the cylinder body 21 and the limiting piece 22, and the fastener is passed through the connecting through holes to realize the connection and fixation of the three.

[0183] According to a second aspect of the present application, referring to Figure 9 , the embodiments of the present application also provide a vehicle 100 comprising the above-mentioned bushing 10.

[0184] The vehicle 100 has all the beneficial effects of the above-mentioned bushing 10, and the present application will not be described here.

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

[0186] In some embodiments, referring to Figure 9 , 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.

[0187] In the large load impact working condition, the suspension component failure chain requires that the control arm (stamping, forging or casting), the steering pull rod (forging) and the subframe (stamping) and the stabilizer bar pull rod (forging) do not allow to be damaged before the steering knuckle (forging or casting), the subframe (casting or extrusion) and the ball head (forging) and the shock absorber cylinder are damaged.

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

[0189]

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

[0191] In some embodiments, referring to Figure 9 , the swing arm 30 is connected with the wheel 40.

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

[0193] In the description of the present application, the terms "first", "second", etc. are used only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0194] In the above embodiments, the description of each embodiment is focused on, and the parts not described in detail in a certain embodiment can be referred to the relevant description of other embodiments.

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

[0196] The above is only the preferred embodiment of the present application, and does not limit the present application in any form. Any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the present application without departing from the technical solution of the present application still falls within the scope of the technical solution of the present application.

Claims

1. A bushing (10) characterized by, The application relates to a core (1) and a shell structure (2), the core (1) and the shell structure (2) are independently formed, the shell structure (2) is sleeved on the core (1), the core (1) is limited in the shell structure (2), the core (1) is used for being connected with a first component, and the shell structure (2) is used for being connected with a second component; a guide part (201) is formed on the shell structure (2), and the guide part (201) is configured to guide the shell structure (2) to be disconnected from the guide part (201) when an acting force between the core (1) and the shell structure (2) reaches a limit extrusion force corresponding to the guide part (201). The shell structure (2) comprises an outer cylinder (21) and a limiting piece (22), the outer cylinder (21) is sleeved on the core (1), and the outer cylinder (21) is configured to be separable along the circumference; the limiting piece (22) is connected with the outer cylinder (21) and is used for limiting the outer cylinder (21) from being separated along the circumference; and the guide part (201) is arranged on the limiting piece (22).

2. The bushing (10) according to claim 1, characterized in that The guide part (201) is a notch (2011), a first gap (2012) or a thinned part (2013) arranged on the limiting piece (22).

3. The bushing (10) according to claim 2, characterized in that The guide part (201) is the notch (2011), and the notch (2011) is semicircular, semi-elliptical, rectangular or triangular.

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

5.

5. The bushing (10) according to claim 3, characterized in that The core (1) has a channel (101) extending along an axial direction of the core (1), the limiting piece (22) is provided with an avoiding hole (2221) corresponding to the channel (101), and the guide part (201) is located at an edge of the avoiding hole (2221).

6. The bushing (10) according to claim 2, characterized in that The limiting piece (22) comprises a side plate (221) which surrounds the outer cylinder (21) along a circumferential direction of the outer cylinder (21) and is connected with the outer cylinder (21).

7. The bushing (10) according to claim 6, characterized in that The limiting piece (22) further comprises a bottom plate (222), the side plate (221) is arranged on one side surface of the bottom plate (222), the bottom plate (222) is located on an end of the outer cylinder (21), the bottom plate (222) is used for limiting the core (1) from being taken out of the outer cylinder (21), and the avoiding hole (2221) is arranged on the bottom plate (222).

8. The bushing (10) according to claim 7, characterized in that The outer cylinder (21) comprises a plurality of sub-housings (210) which are spliced together along an axial direction of the outer cylinder (21), and the limiting piece (22) is used for limiting the plurality of sub-housings (210) from being separated from each other.

9. The bushing (10) according to any one of claims 2 to 8, characterized in that A second gap (211) is formed between two adjacent sub-housings (210), and the number of the guide parts (201) is equal to the number of the second gaps (211).

10. The bushing (10) according to claim 9, characterized in that An included angle between the guide part (201) and the second gap (211) along the circumferential direction of the outer cylinder (21) is 0-45 degrees.

11. The bushing (10) according to claim 10, characterized in that ​ 12. The bushing (10) according to claim 10, characterized in that The guide part (201) is arranged in one-to-one correspondence with the second gap (211).

13. The bushing (10) according to claim 9, characterized in that In the case where the limiting member (22) comprises a side plate (221) and a bottom plate (222), the side plate (221) comprises a plurality of sub-side plates (2211) arranged at intervals on the bottom plate (222), the sub-side plates (2211) are arranged in one-to-one correspondence with the sub-housings (210), and the guide part (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 plates (2211) are welded or connected by fasteners to the sub-housings (210).

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

16. The bushing (10) according to claim 15, characterized in that The number of sub-housings (210) is two, and the two sub-housings (210) are a first sub-housing (2101) and a second sub-housing (2102), the first sub-housing (2101) has opposite first and second side edges (2121) and (2122), and the second sub-housing (2102) has opposite third and fourth side edges (2123) and (2124), wherein the first side edge (2121) corresponds to the fourth side edge (2124) and is hinged by a hinge (213), and the second side edge (2122) corresponds to the third side edge (2123) and is independent of each other.

17. The bushing (10) according to claim 1, characterized in that The guide part (201) is a semicircular notch (2011), and the limit extrusion force satisfies the following relationship: wherein F is the limit pressing force, r is the radius of the bushing (10), y1 is the distance of the notch (2011) from the center of the bushing (10), T is the thickness of the housing structure (2), σ τ is the tensile strength of the material of the housing structure (2), a is the depth of the notch (2011), and b is half the opening width of the notch (2011).

18. The bushing (10) according to any one of claims 1 to 17, characterized in that The core (1) comprises an inner cylinder (11) and an elastic member (12), the inner cylinder (11) is provided with a channel (101), and the elastic member (12) is arranged between the inner cylinder (11) and the shell structure (2).

19. The bushing (10) according to claim 18, characterized in that The elastic member (12) is an elastic sleeve (121), and the inner cylinder (11) is arranged in the elastic sleeve (121).

20. The bushing (10) according to claim 19, characterized in that The elastic sleeve (121) comprises a first straight cylinder segment (1211) and a second straight cylinder segment (1212), wherein the inner diameter of the first straight cylinder segment (1211) is greater than the inner diameter of the second straight cylinder segment (1212), and the second straight cylinder segment (1212) is located at both ends of the first straight cylinder segment (1211).

21. The bushing (10) according to claim 20, characterized in that The middle segment of the inner cylinder (11) is provided with a boss (111), the boss (111) is arranged in the first straight cylinder segment (1211), and the outer diameter of the boss (111) is greater than the inner diameter of the second straight cylinder segment (1212).

22. The bushing (10) according to claim 21, characterized in that The elastic sleeve (121) further comprises a tapered cylinder segment (1213), and the tapered cylinder segment (1213) extends from the first straight cylinder segment (1211) to the second straight cylinder segment (1212).

23. The bushing (10) according to claim 22, characterized in that The elastic sleeve (121) further comprises a radial extension section (1214) connected to one end of the second straight section (1212) away from the first straight 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 section (1212).

24. The bushing (10) of claim 19, characterized in that, The elastic sleeve (121) is formed by splicing a plurality of elastic pieces (1210).

25. The bushing (10) of claim 18, characterized in that, The length of the elastic member (12) is less than the length of the inner cylinder (11) and the length of the shell structure (2), the bushing (10) further comprises a buffer member (3), the buffer member (3) is sleeved outside the inner cylinder (11) and located in the shell structure (2), and the buffer member (3) is further supported on the end of the elastic member (12).

26. The bushing (10) according to claim 25, characterized in that The buffer member (3) is connected with the shell structure (2).

27. The bushing (10) according to claim 25 or 26, characterized in that The material of the buffer member (3) comprises at least one of rubber and silica gel.

28. A vehicle (100), characterized in that The bushing (10) comprises any one of claims 1-27.

29. The vehicle (100) according to claim 28, characterized by 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).

Images