Bag skin structure, air spring, suspension system and vehicle

Abstract

The invention relates to a bag skin structure, an air spring, a suspension system and a vehicle. The bag skin structure comprises a bag skin assembly and a tensioning assembly. The bag skin assembly is provided with a first bag skin and a second bag skin arranged on the periphery of the first bag skin in a sleeving mode. The tensioning assembly is connected between the first bag skin and the second bag skin. Therefore, the radial strength of the bag skin assembly can be improved, and the supporting capacity of the bag skin assembly is improved.

Description

Technical Field

[0001] The present application relates to the field of suspension technology, and in particular to a bladder structure, an air spring, a suspension system and a vehicle. Background Art

[0002] In the related art, air springs are widely used in the suspension system of vehicles. The bladder structure of the air spring can form a closed cavity with the piston, base, etc., and the adjustment of the air spring is achieved by stretching the bladder structure. However, due to the limitations of the production process, the air tightness of the bladder structure is insufficient. After the air spring is used for a long time, the bladder structure will be deflated and aged, which will lead to insufficient support and stability of the air spring, causing the air spring to fail. The failure of the air spring will reduce its stiffness and bearing capacity, and it will not be able to meet the support requirements. Summary of the invention

[0003] The embodiments of the present application provide a bladder structure, an air spring, a suspension system and a vehicle, which improve the supporting force and stability of the bladder structure to at least partially solve the above-mentioned technical problems.

[0004] In order to achieve the above object, according to a first aspect of the present application, a capsule skin structure is provided, comprising:

[0005] The capsule skin assembly comprises a first capsule skin and a second capsule skin which is sleeved on the periphery of the first capsule skin;

[0006] A tensioning component is connected between the first bladder skin and the second bladder skin.

[0007] Optionally, the tensioning assembly comprises:

[0008] A first pull member connected between the first bag skin and the second bag skin;

[0009] The second stretching member is connected between the first bag skin and the second bag skin, and is arranged crosswise with the first stretching member.

[0010] Optionally, an angle α between the first tensioning member and the second tensioning member satisfies: 0°<α≤30°.

[0011] Optionally, the tensioning components are provided in at least two, wherein at least two of the tensioning components are spaced apart along the axial direction of the bladder skin component, and at least two of the tensioning components are spaced apart along the circumferential direction of the bladder skin component; and / or

[0012] The tensioning components are arranged into at least two groups, each group of the tensioning components includes at least two tensioning components, the tensioning components in each group are arranged at intervals along the circumference of the bladder skin component, and the at least two groups of the tensioning components are arranged at intervals along the axial direction of the bladder skin component.

[0013] Optionally, the capsule skin structure further includes:

[0014] A support component is connected between the first bladder skin and the second bladder skin, and is spaced apart from the tensioning component along the axial direction of the bladder skin component.

[0015] According to a second aspect of the present application, there is provided an air spring, comprising:

[0016] As the aforementioned cystic structure;

[0017] A piston assembly, sealingly connected to the first bladder skin;

[0018] A fixing seat, sealingly connected to the second bag skin;

[0019] The bladder skin structure, the piston assembly and the fixing seat are combined to form a closed cavity.

[0020] Optionally, the first bladder skin is constructed with a first clamping structure, and the piston assembly is constructed with a second clamping structure clamped with the first clamping structure, wherein one of the first clamping structure and the second clamping structure is the first clamping structure, and the other is a clamping groove.

[0021] Optionally, the first bladder skin has a restraining portion located in the cavity, and the restraining portion is connected to the first clamping structure, wherein the tensioning assembly is connected between the restraining portion and the second bladder skin.

[0022] Optionally, the second capsule shell is configured with a connecting portion extending toward the fixing seat, and the connecting portion is sealingly connected to the fixing seat.

[0023] Optionally, the connecting portion is sealingly connected to the fixing seat via a first fastener.

[0024] Optionally, the fixing seat comprises:

[0025] A first seat body is formed with a connection area;

[0026] A second base body connected to the first base body, the second base body having a bent portion extending toward the connecting area;

[0027] A sealing ring is arranged in the connection area, and the sealing ring is spaced apart from the bending portion;

[0028] Wherein, the connecting portion is abutted between the sealing ring and the bending portion, and the first seat body is connected to the bending portion through a second fastener.

[0029] According to a third aspect of the present application, a suspension system is also provided, comprising the air spring as described above.

[0030] According to a fourth aspect of the present application, a vehicle is also provided, comprising the suspension system as described above.

[0031] In the bladder skin structure, air spring, suspension system and vehicle of the embodiment of the present application, by arranging a tensioning assembly between the first bladder skin and the second bladder skin, the tensioning assembly can connect the first bladder skin and the second bladder skin, and can improve the radial strength of the bladder skin assembly, thereby improving the supporting capacity of the bladder skin assembly. When the bladder skin assembly is aged or deflated, under the action of the tensioning assembly, the bladder skin assembly can still have sufficient supporting force to ensure the stability of the air spring, so that the air spring has greater stiffness, higher structural strength and better stability.

[0032] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] 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.

[0034] 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.

[0035] Figure 1 is a schematic diagram of the three-dimensional structure of an air spring provided in an exemplary embodiment of the present application;

[0036] Figure 2 is one of the cross-sectional views of an air spring provided in an exemplary embodiment of the present application;

[0037] Figure 3 is a second cross-sectional view of an air spring provided in an exemplary embodiment of the present application;

[0038] Figure 4 yes Figure 3 A magnified schematic diagram of part A;

[0039] Figure 5 yes Figure 3 A magnified schematic diagram of part B;

[0040] Figure 6 yes Figure 3 Cross-sectional view of section CC.

[0041] Description of reference numerals:

[0042] 1. Bag cover assembly; 11. First bag cover; 111. First clamping structure; 112. Constraint portion; 12. Second bag cover; 121. Connecting portion; 13. Third bag cover;

[0043] 2. tensioning assembly; 21. first tensioning member; 22. second tensioning member;

[0044] 3. Support components;

[0045] 4. Piston assembly; 41. Second clamping structure;

[0046] 5. Fixed seat; 51. First seat body; 511. Connecting area; 52. Second seat body; 521. Bending portion; 53. Sealing ring;

[0047] 61. First fastener; 62. Second fastener. DETAILED DESCRIPTION

[0048] 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.

[0049] Air springs are widely used in vehicle suspension systems. The raising and lowering of vehicle bodies can be adjusted by air springs. The bladder structure of air springs is an important component. The extension range of the bladder can limit the adjustment range of air springs. The volume or pressure of the bladder cavity can be changed by injecting air into the bladder cavity, and the elasticity of the gas can be used to make the air spring have different stiffness.

[0050] In the related art, due to the limitation of production process, the air tightness of the bladder structure is insufficient. After the air spring is used for a long time, the bladder structure will be deflated and aged, which will lead to insufficient support and stability of the air spring, causing the air spring to fail. The failure of the air spring will reduce its stiffness and bearing capacity, and it will not be able to meet the support requirements.

[0051] like Figures 1 to 6 As shown, according to the first aspect of the present application, the present application provides a bladder skin structure. The bladder skin structure includes a bladder skin component 1 and a tensioning component 2. The bladder skin component 1 has a first bladder skin 11 and a second bladder skin 12 sleeved on the periphery of the first bladder skin 11. The tensioning component 2 is connected between the first bladder skin 11 and the second bladder skin 12.

[0052] In the embodiment of the present application, by arranging the tensioning assembly 2 between the first bladder skin 11 and the second bladder skin 12, the tensioning assembly 2 can connect the first bladder skin 11 and the second bladder skin 12, and can improve the radial strength of the bladder skin assembly 1, thereby improving the supporting capacity of the bladder skin assembly 1. When the bladder skin assembly 1 is aged or deflated, under the action of the tensioning assembly 2, the bladder skin assembly 1 can still have sufficient supporting force to ensure the stability of the air spring, so that the air spring has greater stiffness, higher structural strength and better stability.

[0053] It is understandable that the tensioning assembly 2 is connected between the first bladder skin 11 and the second bladder skin 12 to improve the supporting capacity of the bladder skin assembly 1. When the bladder skin assembly 1 is aged or deflated, the influence of aging and deflation on the bladder skin assembly 1 can be reduced, so that the air spring can still maintain good structural strength, so that the air spring has high stability and durability. In this way, it can effectively avoid the situation where the vehicle body is lowered to the lowest state and cannot be used at all due to aging or deflation of the bladder skin assembly 1, thereby improving the practicality of the air spring.

[0054] After the tensioning assembly 2 increases the supporting force of the bladder skin assembly 1, it can also slow down the deflation process of the bladder skin assembly 1 and reduce the impact of deflation on the air spring. Therefore, the use of the tensioning assembly 2 can also reduce the air tightness requirements of the air spring and make the air spring have strong durability.

[0055] Compared with air springs of the same volume and height in the related art, the adjustable stiffness of the air spring using the present bladder skin structure can be improved, thereby improving the load-bearing capacity of the air spring and the stability during use. At the same time, based on the improvement of the supporting performance of the bladder skin component 1 by the tensioning component 2, it can also effectively avoid the failure of the air spring due to severe vibration during use.

[0056] In some embodiments, the tensioning component 2 is made of a flexible material so that the tensioning component 2 plays a flexible supporting role. For example, the tensioning component 2 and the bladder skin component 1 are made of the same material. Moreover, the tensioning component 2 and the bladder skin component 1 are integrally formed. For example, the tensioning component 2 and the bladder skin component 1 are both made of rubber.

[0057] like Figure 2 and Figure 3 As shown, the first capsule skin 11 is the inner capsule skin of the capsule skin component 1, and the second capsule skin 12 is the outer capsule skin of the capsule skin component 1. Figure 6 As shown, the first capsule skin 11 and the second capsule skin 12 are both configured to be substantially cylindrical structures, wherein the diameter of the first capsule skin 11 is smaller than the diameter of the second capsule skin 12 , so that the first capsule skin 11 can be disposed inside the second capsule skin 12 .

[0058] Please continue reading Figure 2and Figure 3 The capsule skin assembly 1 may further include a third capsule skin 13. The third capsule skin 13 is used to connect the first capsule skin 11 and the second capsule skin 12, so as to enclose and form a closed capsule skin assembly 1. The third capsule skin 13 is configured in a circular ring shape so that the two ends of the third capsule skin 13 are respectively connected to the first capsule skin 11 and the second capsule skin 12. The cross section of the third capsule skin 13 may be configured in an arc shape. For example, the cross section of the third capsule skin 13 is configured in a semicircular shape.

[0059] In some embodiments, the tensioning assembly 2 is a single structural member, and the tensioning assembly 2 can be arranged obliquely or horizontally between the first bladder skin 11 and the second bladder skin 12 so that it can play a structural reinforcement effect to improve the supporting performance of the bladder skin assembly 1.

[0060] like Figure 4 In some embodiments, the tensioning assembly 2 includes a first tensioning member 21 and a second tensioning member 22. The first tensioning member 21 is connected between the first bag skin 11 and the second bag skin 12. The second tensioning member 22 is connected between the first bag skin 11 and the second bag skin 12. The first tensioning member 21 and the second tensioning member 22 are arranged crosswise.

[0061] It can be understood that, based on the supporting effect of the first tension member 21 and the second tension member 22 on the first bladder skin 11 and the second bladder skin 12, the radial deformation of the bladder skin assembly 1 can be effectively limited, and the deformation amount of the bladder skin assembly 1 can be reduced. After the air spring is aged and / or deflated due to long-term use, the first tension member 21 and the second tension member 22 can effectively support the bladder skin assembly 1, reduce the influence of rubber aging and deflation on the air spring, and improve the durability of the air spring.

[0062] In some embodiments, the first tensioning member 21 and the second tensioning member 22 may be arranged to cross each other up and down, that is, the first tensioning member 21 and the second tensioning member 22 extend in the axial direction of the bladder skin component 1 and form a cross.

[0063] In some embodiments, the intersection of the first tensioning member 21 and the second tensioning member 22 may be located in the middle of the spacing area formed by the first bag skin 11 and the second bag skin 12. Alternatively, the intersection of the first tensioning member 21 and the second tensioning member 22 may be close to the first bag skin 11. Alternatively, the intersection of the first tensioning member 21 and the second tensioning member 22 may be close to the second bag skin 12. The first tensioning member 21 and the second tensioning member 22 may be arranged crosswise to effectively enhance the support effect of the bag skin assembly 1, and the intersection position of the two is not limited in the embodiment of the present application.

[0064] In some embodiments, the first tensioning member 21 and the second tensioning member 22 are both inclined. For example, along the direction from the first skin 11 to the second skin 12, the first tensioning member 21 is inclined upward, and the second tensioning member 22 is also inclined upward. Alternatively, along the direction from the first skin 11 to the second skin 12, the first tensioning member 21 is inclined upward, and the second tensioning member 22 is inclined downward. Alternatively, along the direction from the first skin 11 to the second skin 12, the first tensioning member 21 is inclined downward, and the second tensioning member 22 is inclined upward. Alternatively, along the direction from the first skin 11 to the second skin 12, the first tensioning member 21 is inclined downward, and the second tensioning member 22 is also inclined downward.

[0065] In some embodiments, the first stretching member 21, the second stretching member 22, the first bag skin 11 and the second bag skin 12 are integrally formed.

[0066] In some embodiments, the first stretching member 21, the second stretching member 22, the first capsule skin 11 and the second capsule skin 12 have the same thickness. Alternatively, at least two of the first stretching member 21, the second stretching member 22, the first capsule skin 11 and the second capsule skin 12 have different thicknesses.

[0067] like Figure 4 As shown, in some embodiments, the angle between the first tensioning member 21 and the second tensioning member 22 is α, which satisfies: 0°<α≤30°.

[0068] It is understandable that the angle between the first tensioning member 21 and the second tensioning member 22 will affect the design difficulty and the symmetry of the vertical stiffness performance of the air spring. The angle α is set to be greater than 0 degrees to ensure that the first tensioning member 21 and the second tensioning member 22 form an intersection. The angle α is set to be less than or equal to 30 degrees to prevent the design difficulty of the air spring from being too great and the symmetry of the vertical stiffness performance of the air spring from being too poor.

[0069] In some embodiments, the angle α between the first tensioning member 21 and the second tensioning member 22 can be set to 5 degrees, 10 degrees, 15 degrees, 20 degrees, 25 degrees, 30 degrees, or any value therebetween.

[0070] In some embodiments, at least two tensioning assemblies 2 are provided. At least two tensioning assemblies 2 are arranged at intervals along the circumference of the bladder skin assembly 1. And / or, the tensioning assemblies 2 are provided in at least two groups. Each group of tensioning assemblies 2 includes at least two tensioning assemblies 2. The tensioning assemblies 2 in each group are arranged at intervals along the circumference of the bladder skin assembly 1. At least two groups of tensioning assemblies 2 are arranged at intervals along the axial direction of the bladder skin assembly 1.

[0071] It is understandable that by providing at least two tensioning assemblies 2 and / or at least two groups of tensioning assemblies 2, the supporting performance of the bladder skin assembly 1 can be improved at multiple locations, further improving the structural strength, stability and durability of the air spring.

[0072] For example, at least two tensioning assemblies 2 are arranged at intervals along the circumference of the bladder skin assembly 1, and at least two tensioning assemblies 2 are distributed symmetrically in the center. Thus, the structure of the bladder skin assembly 1 can be strengthened at multiple positions along the circumference to improve the support performance of the bladder skin assembly 1. Among them, 10-15 tensioning assemblies 2 can be arranged at intervals along the circumference of the bladder skin assembly 1. Alternatively, more or less tensioning assemblies 2 can be designed based on the design requirements and use requirements of the air spring.

[0073] For example, at least two tensioning assemblies 2 are arranged at intervals along the circumference of the bladder skin assembly 1, and at least two tensioning assemblies 2 are distributed symmetrically along the center, and form a group of tensioning assemblies 2. Multiple groups of tensioning assemblies 2 are arranged at intervals along the axial direction of the bladder skin assembly 1. In this way, the structure of the bladder skin assembly 1 can be strengthened at multiple positions in the circumferential and axial directions to improve the supporting performance of the bladder skin assembly 1. For example, 15 tensioning assemblies 2 are arranged at intervals along the circumference of the bladder skin assembly 1, and the tensioning assemblies 2 are arranged in 3 groups.

[0074] It is understandable that the more tensioning components 2 are set and the smaller the spacing, the more significant the effect of increasing the stiffness of the air spring can be, and the supporting performance can be significantly improved. However, a larger number of tensioning components 2 will make the air spring more difficult to manufacture and reduce the range of stiffness variation, resulting in the vehicle being unable to adjust to a comfortable height position. Therefore, the number and spacing of tensioning components 2 can be reasonably selected based on design requirements.

[0075] In some embodiments, the number of tensioning components 2 is determined by the design parameters of the air spring, which include the material properties of the bladder skin component 1 (e.g., section strength, hardness, modulus, etc.), the structure of the bladder skin component 1 (e.g., thickness, internal cord distribution, etc.), the internal cord material, the design size of the piston assembly 4, the design size of the bladder skin component 1, etc.

[0076] Among them, the number and distribution of tensioning components 2 can be reasonably selected based on design requirements, including: the number of tensioning components 2 in the circumferential direction, the spacing between two adjacent tensioning components 2 in the circumferential direction, the number of tensioning components 2 in the axial direction (i.e., the number of groups of tensioning components 2), the spacing between two adjacent groups of tensioning components 2, etc.

[0077] Please continue reading Figure 2 and Figure 3 In some embodiments, the skin structure further includes a support component 3. The support component 3 is connected between the first skin 11 and the second skin 12. Along the axial direction of the skin component 1, the support component 3 and the tension component 2 are spaced apart.

[0078] It is understandable that the support assembly 3 can support the bladder skin assembly 1 in the radial direction, thereby limiting radial deformation of the air spring. When the air spring ages or deflates after long-term use, the support structure can limit the radial contraction of the second bladder skin 12, thereby resisting the second bladder skin 12 and reducing the impact of failure of the air spring due to aging or deflation.

[0079] In some embodiments, the support assembly 3 is made of metal material, so as to play a rigid support effect. The support assembly 3 can be set in a circular ring shape. The outer ring of the support assembly 3 abuts against the second bladder skin 12, and the inner ring of the support assembly 3 abuts against the first bladder skin 11. Among them, the outer surface of the second bladder skin 12 can be connected with an aluminum casing structure, and the support assembly 3 corresponds to the aluminum casing structure, so that the support assembly 3 can be sleeved in the aluminum casing, and the second bladder skin 12 is fixed between the support assembly 3 and the aluminum casing.

[0080] In some embodiments, the support assembly 3 may be a hollow structure, and its inner ring and outer ring may be spaced apart and connected by a connector. Thus, the weight of the support assembly 3 may be reduced, and the consumables of the support assembly 3 may be reduced. Among them, the connector may be provided in plurality, and spaced apart in the axial direction and / or circumferential direction. Further, the connector may include two cross-arranged connecting columns to further enhance the support effect of the support assembly 3.

[0081] like Figures 1 to 3 As shown, according to the second aspect of the present application, an air spring is provided, the air spring comprising the above-mentioned bladder skin structure. The air spring has all the beneficial effects of the above-mentioned bladder skin structure, which will not be described in detail in the present application.

[0082] The air spring further comprises a piston assembly 4 and a fixing seat 5. The piston assembly 4 is sealedly connected to the first bladder skin 11. The fixing seat 5 is sealedly connected to the second bladder skin 12. The bladder skin structure, the piston assembly 4 and the fixing seat 5 enclose a closed cavity.

[0083] It can be understood that the fixing seat 5 can be used to connect the lower support member of the suspension system, so as to fix the air spring to the suspension system.

[0084] Air can be filled into a closed cavity formed by the bladder structure, the piston assembly 4 and the fixing seat 5 to change the volume or pressure of the cavity, and the air spring can have different stiffnesses by utilizing the elasticity of the gas.

[0085] Please continue reading Figure 2 and Figure 3In some embodiments, the first bladder skin 11 is configured with a first clamping structure 111, and the piston assembly 4 is configured with a second clamping structure 41 clamped with the first clamping structure 111. One of the first clamping structure 111 and the second clamping structure 41 is a buckle, and the other is a slot. The buckle is clamped in the slot.

[0086] It can be understood that, based on the clamping of the first clamping structure 111 and the second clamping structure 41, the connection between the first bladder skin 11 and the piston assembly 4 can be achieved, so that the piston assembly 4 is installed in the bladder skin component 1. Among them, the first clamping structure 111 and the second clamping structure 41 can form an interference fit, so that after the first clamping structure 111 and the second clamping structure 41 are connected, there is good air tightness between the piston assembly 4 and the first bladder skin 11. Alternatively, a sealing filling layer can also be provided in the second clamping structure 41, and the sealing filling layer is used to fill the gap between the first clamping structure 111 and the second clamping structure 41 to ensure good air tightness between the piston assembly 4 and the first bladder skin 11.

[0087] The first clamping structure 111 is configured as an annular clamping buckle, and the second clamping structure 41 is configured as an annular clamping groove. Based on the mutual cooperation between the clamping buckle and the clamping groove, the assembly between the piston assembly 4 and the bladder skin assembly 1 can be very convenient, simplifying the assembly process and reducing the assembly cost while meeting the airtightness requirements.

[0088] For example, a buckle is configured on one side of the first bladder skin 11 facing the piston assembly 4, and a slot is configured on one side of the piston assembly 4 facing the first bladder skin 11, and the buckle is engaged in the slot, thereby achieving connection between the piston assembly 4 and the first bladder skin 11.

[0089] For example, a slot is configured on one side of the first bladder skin 11 facing the piston assembly 4, and a buckle is configured on one side of the piston assembly 4 facing the first bladder skin 11, and the buckle is engaged in the slot, thereby achieving connection between the piston assembly 4 and the first bladder skin 11.

[0090] Please continue reading Figure 2 and Figure 3 In some embodiments, the first bladder skin 11 has a constraint portion 112 located in the cavity. The constraint portion 112 is connected to the first clamping structure 111. The tensioning assembly 2 is connected between the constraint portion 112 and the second bladder skin 12.

[0091] It is understandable that, based on the connection between the tensioning assembly 2 and the constraint portion 112 and the second bladder skin 12, when the air spring is subjected to a large impact, the constraint portion 112 can play a role in buffering and rebounding. For example, when the air spring vibrates due to large fluctuations in the pressure inside the cavity during use, the constraint portion 112 cooperates with the tensioning assembly 2 to effectively buffer the vibration, prevent the air spring from becoming unstable due to a really violent impact, and improve the stability of the air spring. When applied to the suspension system of a vehicle, it can provide a more comfortable driving experience for the driver.

[0092] In some embodiments, the thickness of the constraint portion 112 may be slightly greater than the thickness of the first and second skins 11 and 12. Alternatively, the thickness of the constraint portion 112 is the same as the thickness of the first and second skins 11 and 12.

[0093] In some embodiments, the second capsule 12 is configured with a connecting portion 121 extending toward the fixing seat 5. The connecting portion 121 is sealedly connected to the fixing seat 5.

[0094] It is understandable that the airtight seal between the second bladder skin 12 and the fixing seat 5 is achieved based on the sealed connection between the connecting portion 121 and the fixing seat 5. Thus, the piston assembly 4, the bladder skin component 1 and the fixing seat 5 can be enclosed to form a closed cavity.

[0095] The connecting portion 121 and the second bag shell 12 are integrally formed.

[0096] like Figure 2 As shown, in some embodiments, the connecting portion 121 is sealedly connected to the fixing seat 5 via a first fastener 61 .

[0097] It can be understood that in order to realize the connection between the fixing seat 5 and the connecting part 121 by the first fastener 61, a first connecting hole can be constructed on the fixing seat 5, and a second connecting hole can be constructed on the connecting part 121. The first fastener 61 is sequentially inserted into the first connecting hole and the second connecting hole to realize a reliable connection between the connecting part 121 and the fixing seat 5.

[0098] In some embodiments, the first fastener 61 may be configured as a screw, and the first connection hole and the second connection hole may be configured as threaded holes correspondingly.

[0099] In some embodiments, a sealing gasket may be sleeved on the first fastener 61 , or a sealing filling layer may be provided between the connecting portion 121 and the fixing seat 5 to further enhance the airtightness between the connecting portion 121 and the fixing seat 5 .

[0100] like Figure 3 and Figure 5As shown, in some embodiments, the fixing seat 5 includes a first seat body 51, a second seat body 52 and a sealing ring 53. The first seat body 51 is formed with a connection area 511. The second seat body 52 is connected to the first seat body 51. The second seat body 52 has a bending portion 521 extending toward the connection area 511. The sealing ring 53 is arranged in the connection area 511. The sealing ring 53 and the bending portion 521 are arranged at intervals. Among them, the connecting portion 121 is abutted between the sealing ring 53 and the bending portion 521. The first seat body 51 is connected to the bending portion 521 through a second fastener 62.

[0101] It is understandable that, under the locking action of the second fastener 62, the first seat body 51 and the second seat body 52 can form a stable connection, and the second seat body 52 can be close to the first seat body 51. Under this fastening action, the second seat body 52 can reliably abut the connecting portion 121 between the sealing ring 53 and the bending portion 521, thereby locking the connecting portion 121 and realizing a sealed connection between the connecting portion 121 and the fixing seat 5.

[0102] The distance between the bent portion 521 and the sealing ring 53 may be smaller than the thickness of the connecting portion 121. When the connecting portion 121 abuts between the bent portion 521 and the sealing ring 53, the bent portion 521 and the sealing ring 53 may squeeze the connecting portion 121, thereby achieving not only a reliable connection but also an airtight seal.

[0103] In some embodiments, the first base 51 , the second base 52 and the sealing ring 53 are all made of metal.

[0104] In some embodiments, the first seat body 51 includes a main body, a first extension, a second extension, and a third extension connected in sequence. The first extension extends in a direction away from the second seat body 52, and the first extension and the main body can be connected at an obtuse angle. The second extension is connected to the first extension at an obtuse angle, and the second extension is arranged parallel to the main body. The third extension has a protruding structure protruding outward in the direction of the capsule skin component 1. Thus, the first extension, the second extension, and the third extension can be used to enclose and form a connection area 511.

[0105] Among them, based on the fact that the air spring is a roughly cylindrical structure, the main body can be set to be circular, and the first extension part, the second extension part and the third extension part are all set to be annular structures.

[0106] In some embodiments, the bending portion 521 is integrally formed with the second base body 52 , and the bending portion 521 is bent in the connecting area 511 , and the bending portion 521 is in contact with the second extension portion of the first base body 51 .

[0107] In some embodiments, the second extension portion of the first base 51 and the bent portion 521 of the second base 52 are connected by the second fastener 62. A third connection hole may be configured on the second extension portion, and a fourth connection hole may be configured on the bent portion 521. The second fastener 62 is sequentially inserted into the third connection hole and the fourth connection hole to achieve mutual fixation between the first base 51 and the second base 52. For example, the second fastener 62 may be a bolt, and the third connection hole and the fourth connection hole are both configured as threaded holes.

[0108] A sealing gasket may be sleeved on the second fastener 62. Alternatively, a sealing filling layer may be provided in the connection area 511. Alternatively, a sealing filling layer may be provided between the second extension portion and the bending portion 521. Thus, the air tightness of the connection between the fixing seat 5 and the bladder skin component 1 may be further improved.

[0109] In some embodiments, the first seat body 51 may be fixedly connected to the lower support member of the suspension system by bolts.

[0110] The air spring in the embodiment of the present application can not only reduce its air tightness requirements, but also has the advantages of simple structure and easy assembly, which can effectively reduce the production cost of the air spring.

[0111] According to a third aspect of the present application, a suspension system is provided, which includes the above-mentioned air spring. The suspension system has all the beneficial effects of the above-mentioned air spring, which will not be described in detail in the present application.

[0112] According to a fourth aspect of the present application, a vehicle is provided, which includes the above-mentioned suspension system. The vehicle has all the beneficial effects of the above-mentioned suspension system, which will not be described in detail in the present application.

[0113] The vehicle may be a fuel vehicle, a plug-in hybrid vehicle or a new energy vehicle, etc., and this application does not make any specific limitation on this.

[0114] 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.

[0115] 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.

[0116] The embodiments, implementation methods and related technical features of the present application can be combined and replaced with each other without conflict.

[0117] 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 capsule structure, characterized in that: include: A bladder skin assembly comprises a first bladder skin and a second bladder skin sleeved around the first bladder skin; A tensioning component is connected between the first bladder skin and the second bladder skin.

2. The capsule skin structure according to claim 1, characterized in that: The tensioning assembly comprises: A first pull member connected between the first bag skin and the second bag skin; The second stretching member is connected between the first bag skin and the second bag skin, and is arranged crosswise with the first stretching member.

3. The capsule skin structure according to claim 2, characterized in that: The angle between the first tensioning member and the second tensioning member is α, which satisfies: 0°<α≤30°.

4. The capsule skin structure according to any one of claims 1 to 3, characterized in that: The number of the tensioning components is at least two, and the at least two tensioning components are spaced apart along the circumference of the bladder skin component; and / or The tensioning components are arranged into at least two groups, each group of the tensioning components includes at least two tensioning components, the tensioning components in each group are arranged at intervals along the circumference of the bladder skin component, and the at least two groups of the tensioning components are arranged at intervals along the axial direction of the bladder skin component.

5. The capsule skin structure according to any one of claims 1 to 3, characterized in that: The capsule skin structure also includes: A support component is connected between the first bladder skin and the second bladder skin, and is spaced apart from the tensioning component along the axial direction of the bladder skin component.

6. An air spring, characterized in that: include: The capsule skin structure according to any one of claims 1 to 5; A piston assembly is sealingly connected to the first bladder skin; A fixing seat, sealingly connected to the second bag skin; The bladder skin structure, the piston assembly and the fixing seat are combined to form a closed cavity.

7. The air spring according to claim 6, characterized in that: The first bladder skin is configured with a first clamping structure, and the piston assembly is configured with a second clamping structure clamped with the first clamping structure. One of the first clamping structure and the second clamping structure is a buckle, and the other is a clamping groove.

8. The air spring according to claim 7, characterized in that: The first bladder skin has a restraining portion located in the cavity, and the restraining portion is connected to the first clamping structure, wherein the tensioning assembly is connected between the restraining portion and the second bladder skin.

9. The air spring according to any one of claims 6 to 8, characterized in that: The second bag skin is configured with a connecting portion extending toward the fixing seat, and the connecting portion is sealingly connected to the fixing seat.

10. The air spring according to claim 9, characterized in that The connecting portion is sealingly connected to the fixing seat via a first fastener.

11. The air spring according to claim 9, characterized in that The fixing seat comprises: A first seat body is formed with a connection area; A second base body connected to the first base body, the second base body having a bent portion extending toward the connecting area; A sealing ring, arranged in the connection area, wherein the sealing ring is spaced apart from the bending portion; Wherein, the connecting portion is abutted between the sealing ring and the bending portion, and the first seat body is connected to the bending portion through a second fastener.

12. A suspension system, characterized in that: Comprising the air spring according to any one of claims 6-11.

13. A vehicle, characterized in that: Comprising the suspension system of claim 12.

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