Air spring bladder skin sealing structure and air spring

Abstract

The present invention relates to the technical field of air springs, and in particular, to an air spring bladder skin sealing structure and an air spring. The air spring bladder skin sealing structure includes: a fixed lower seat, a clamping ring and a bladder skin; a fixing portion is provided at the lower end of the bladder skin, and the fixing portion includes a first sub-fixing portion extending through the lower end of the bladder skin, and the first sub-fixing portion is annular and extends in a vertical direction; the clamping ring includes a clamping portion, and the clamping portion is annular and can be fitted on the outer peripheral surface of the first fixing portion; the fixed lower seat is provided with a fixing groove arranged toward the bladder skin, and the fixing groove is annular, and the lower ends of the clamping portion and the fixing portion can be extended into and filled in the fixing groove together, and can push the inner side wall of the fixing groove, so that the side wall of the fixing groove has a deformation tendency to expand outward. In this way, the problems of difficult installation, easy damage to parts and poor sealing effect during the installation of the air spring bladder skin seal are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of air springs, and in particular to an air spring bladder skin sealing structure and an air spring. Background Art

[0002] Air springs are filled with compressed air in a sealed container, and use the compressibility of gas to achieve its elastic effect. Air springs have nonlinear elastic characteristics, and their characteristic curves can be designed into ideal shapes. Cars equipped with air suspensions have low vibration frequencies and small wheel dynamic loads, which can achieve good ride smoothness, handling stability and driving safety, reduce damage to the road surface caused by high-speed vehicles, and the height of the vehicle body does not change with the increase or decrease of load. The spring stiffness can be designed to be lower, and the ride comfort is good. It also has the characteristics of being able to adjust the height of the vehicle body as needed.

[0003] Existing air springs usually include a bladder filled with inert gas. The upper and lower ends of the bladder need to be sealed and connected to other components. The traditional sealing method is to fix the edge of the bladder that needs to be sealed on the relevant parts through a crimping ring. The installation process of the crimping ring requires the use of special equipment to deform it to complete the installation. However, this method has high requirements on the crimping pressure and crimping equipment accuracy of the equipment. At the same time, it puts high pressure on the mating position of the components used to fix the bladder skin, and there is a risk of damaging the mating threads of the upper and lower seats and poor sealing of the bladder skin. Summary of the invention

[0004] In order to solve the problems of difficult installation, easy damage to parts and poor sealing effect during the installation of air spring bladder skin seals, the present invention provides an air spring bladder skin sealing structure and an air spring.

[0005] The first aspect of the present invention provides an air spring bladder skin sealing structure, comprising: a fixed lower seat, a clamping ring and a bladder skin; a fixing portion is provided at the lower end of the bladder skin, the fixing portion comprises a first sub-fixing portion formed by extending through the lower end of the bladder skin, the first sub-fixing portion is annular and extends in a vertical direction; the clamping ring comprises a clamping portion, the clamping portion is annular and can be fitted on the outer peripheral surface of the first fixing portion; the fixed lower seat is provided with a fixing groove arranged toward the bladder skin, the fixing groove is annular, the lower ends of the clamping portion and the fixing portion can extend into and fill the fixing groove together, and can push the inner side wall of the fixing groove, so that the side wall of the fixing groove has a deformation tendency to expand outward.

[0006] In some embodiments, the fixing portion also includes a second sub-fixing portion, which is connected to the first sub-fixing portion and arranged at an interval, the outer circumferential surface of the clamping portion is arranged to fit the inner circumferential surface of the second sub-fixing portion, and the clamping portion is arranged in the interval space between the first sub-fixing portion and the second sub-fixing portion.

[0007] In some embodiments, the first sub-fixing portion extends downward and is connected to the second sub-fixing portion through the bottom of the fixing groove, and the first sub-fixing portion and the second sub-fixing portion are integrally arranged.

[0008] In some embodiments, the clamping ring also includes a supporting portion arranged on the upper side of the clamping portion, one end of the supporting portion is connected to the upper side of the clamping portion, and the other end of the supporting portion extends in a direction away from the clamping portion; the bag skin is covered with a bag body capable of accommodating gas, and the bag body can expand in a radial direction under the drive of the gas and be converted into an inflated state. In the expanded state, the bottom of the bag body can fit against the supporting portion.

[0009] In some embodiments, the support portion is configured to extend in a horizontal direction.

[0010] In some embodiments, the snap ring is made of nylon.

[0011] In some embodiments, the inner side wall of the fixing groove is provided with a protrusion structure, and the extension direction of the protrusion structure is perpendicular to the inner side wall of the fixing groove.

[0012] In some embodiments, a plurality of protrusion structures are provided and are evenly distributed in an array on the inner side wall of the fixing groove.

[0013] In some embodiments, the protruding structure is a threaded structure disposed on the inner wall of the fixing groove, the threaded structure comprising a first thread disposed on the first side of the inner wall of the fixing groove and a second thread disposed on the second side of the inner wall of the fixing groove, and the first thread and the second thread have the same rotation direction.

[0014] The second aspect of the present invention further provides an air spring, comprising an upper top seat and the air spring bladder skin sealing structure in the above technical solution, wherein the bladder skin is sealingly connected to the upper top seat.

[0015] In order to solve the problems of difficult installation, easy damage to parts and poor sealing effect during the installation of air spring bladder skin seal, the present invention has the following advantages:

[0016] The clamping part of the clamping ring is attached to the outer peripheral surface of the first sub-fixing part, so that the first sub-fixing part made of elastic material can have a certain rigidity. When the clamping ring and the first sub-fixing part are installed in the fixing groove together, the clamping part can play the role of supporting the frame, thereby preventing the first sub-fixing part from deforming and affecting the installation effect. At the same time, since the lower ends of the clamping part and the fixing part can be extended into and filled in the fixing groove together, and cause it to have a deformation tendency to expand outward, that is, the fixing groove can exert an inward force on the clamping part and the fixing part, and generate a large friction force, thereby completing the sealing installation and fixation of the bag skin. Compared with the buckling ring used in the traditional scheme, the process of exerting a force on the buckling ring to make it deform can be avoided, and during the installation process, each component only produces a slight elastic deformation, and no plastic deformation is required. Therefore, the installation process is relatively easy and not easy to cause damage to the parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic cross-sectional structure diagram of an air spring bag skin sealing structure according to an embodiment is shown;

[0018] Figure 2 A schematic diagram of an air spring bag skin sealing structure according to an embodiment is shown;

[0019] Figure 3 Shows Figure 1 A partial enlarged structural diagram of the middle part;

[0020] Figure 4 A schematic cross-sectional structure diagram of a fixed lower seat according to an embodiment is shown;

[0021] Figure 5 Shows Figure 4 Schematic diagram of the partially enlarged structure of part B in the middle.

[0022] Figure numerals: 10 - fixed lower seat; 11 - fixed groove; 111 - raised structure; 20 - snap ring; 21 - snap part; 22 - support part; 30 - bladder skin; 31 - bladder skin body; 32 - fixed part; 321 - first sub-fixed part; 322 - second sub-fixed part. DETAILED DESCRIPTION

[0023] The present disclosure will now be discussed with reference to several exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and thus implement the present disclosure, rather than implying any limitation on the scope of the present disclosure.

[0024] As used herein, the term "including" and its variants are to be interpreted as open-ended terms meaning "including but not limited to". The term "based on" is to be interpreted as "based at least in part on". The terms "one embodiment" and "an embodiment" are to be interpreted as "at least one embodiment". The term "another embodiment" is to be interpreted as "at least one other embodiment". The orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "vertical", "horizontal", "lateral", "longitudinal" and the like is based on the orientation or position relationship shown in the accompanying drawings. These terms are mainly for better describing the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation. In addition, in addition to being used to indicate an orientation or position relationship, some of the above terms may also be used to indicate other meanings, such as the term "upper" may also be used to indicate a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to the specific circumstances. In addition, the terms "install", "set", "provided with", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be an internal connection between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances. In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.

[0025] This embodiment discloses a sealing structure of an air spring bladder skin 30, such as Figures 1 to 3 As shown, it may include: a fixed lower seat 10, a clamping ring 20 and a bag skin 30; a fixing portion 32 is provided at the lower end of the bag skin 30, and the fixing portion 32 includes a first sub-fixing portion 321 extending through the lower end of the bag skin 30, and the first sub-fixing portion 321 is annular and extends in the vertical direction; the clamping ring 20 includes a clamping portion 21, and the clamping portion 21 is annular and can be fitted on the outer peripheral surface of the first sub-fixing portion 321; the fixed lower seat 10 is provided with a fixing groove 11 arranged toward the bag skin 30, and the fixing groove 11 is annular, and the lower ends of the clamping portion 21 and the fixing portion 32 can extend into and fill the fixing groove 11 together, and can push the inner side wall of the fixing groove 11, so that the side wall of the fixing groove 11 has a deformation tendency to expand outward.

[0026] It should be noted that the above scheme is mainly aimed at the sealing connection of the lower end of the bladder skin 30 of the air spring for automobiles. In the current traditional installation scheme, the buckle ring is mainly used as a fixing component. The fixed lower seat 10 is generally provided with a mounting portion for mounting the lower end of the bladder skin 30. Specifically, the mounting portion usually has a cylindrical outer peripheral surface for mounting the fixed bladder skin 30. During the installation process, the bladder skin 30 is first placed on the mounting portion, and then a force is applied to the buckle ring through a special device or tool, so that the buckle ring is plastically deformed and squeezes the bladder skin 30, thereby sealing and fixing the bladder skin 30 on the outer peripheral surface of the installation. For the traditional scheme, even if a special tool or equipment is used, there are still cases where the sealing is not firm, the connection is not in place, resulting in sealing and installation failure. In the process of deforming the buckle ring, since a large force needs to be applied to it to complete the installation, it will also cause the mounting portion of the fixed lower seat 10 matched with it to be damaged due to excessive force, which may result in poor sealing effect at the least and scrapped parts at the worst, which not only affects the production efficiency, but also seriously affects the economic efficiency of production.

[0027] In the present application, the clamping portion 21 of the clamping ring 20 is attached to the outer peripheral surface of the first sub-fixing portion 321, so that the first sub-fixing portion 321 made of elastic material can have a certain rigidity. When the clamping ring 20 and the fixing portion 32 are installed in the fixing groove 11 together, the elasticity of the bag skin 30 material is utilized to simultaneously insert the clamping ring 20 and the fixing portion 32 into the fixing groove 11 as a relatively complete whole. In this process, the clamping portion 21 can play a role in supporting the skeleton, thereby preventing the first sub-fixing portion 321 from deforming and affecting the installation effect. At the same time, since the lower ends of the clamping portion 21 and the fixing portion 32 can extend into and fill the fixing groove 11 together, and cause it to have a deformation tendency to expand outward, that is, the fixing groove 11 can exert an axial force on the clamping portion 21 and the fixing portion 32. The force inside the bag skin 30 is generated, and a large friction force is generated, thereby completing the sealing installation and fixation of the bag skin 30. At the same time, since the clamping part 21 is made of hard material, it hardly deforms during and after the installation process. After being installed in place, it can act as a force-applying component to force only the fixing part 32 of the bag skin 30 to deform, and on the basis of further increasing its deformation degree, the friction between it and the inner wall of the fixing groove 11 is further increased, thereby achieving the same effect of deforming the bag skin 30 and then sealing as the traditional buckling ring, but compared with the buckling ring used in the traditional solution, the process of applying the force to deform the buckling ring can be avoided, and during the installation process, each component only produces a slight elastic deformation, and no plastic deformation is required. Therefore, the installation process is relatively easy and not easy to damage the components.

[0028] In addition, the adoption of the above technical solution can also facilitate later maintenance and replacement operations. Since the bladder skin 30 is made of rubber, it is prone to aging, and repeated inflation and deflation of it will also cause the aged bladder skin 30 to be easily damaged, resulting in leakage. At this time, the maintenance plan is usually to replace the bladder skin 30 instead of repairing it, but in the traditional installation and fixing plan, the buckling ring is installed by plastic deformation. If it needs to be removed, it can only be disassembled destructively, but this process can easily cause damage to other parts. At the same time, since the installation process of the buckling ring requires a large force, even if the mounting part that cooperates with it does not cause serious damage, it may cause slight deformation or minor damage. It may not have an impact during the first installation, but during the maintenance process, a new buckling ring needs to be installed a second time. At this time, the damage to the mounting part may be expanded, which expands the scope of maintenance and causes additional damage. However, in the solution adopted in the present application, all parts are detachable. During the disassembly process, by pulling the clamping part 21 and removing it, the fixing part 32 of the bag skin 30 loses its internal force and can be easily removed. When replacing the new bag skin 30, the old clamping part 21 can still be used. Except for the damaged bag skin 30, no additional parts need to be replaced, which greatly simplifies the maintenance operation and can also reduce the number of parts that need to be replaced, saving maintenance costs.

[0029] The above technical solution is particularly applicable to air springs in the rear suspension of a separated air suspension (air suspension with separated air spring and air damping control valve), and of course, it can also be applicable to air springs in other situations.

[0030] In order to further enhance the sealing performance of the air spring bladder skin 30 sealing structure, as Figure 1 as well as Figure 3 As shown, the fixing portion 32 also includes a second sub-fixing portion 322, which is connected to and spaced apart from the first sub-fixing portion 321, and the outer circumferential surface of the clamping portion 21 is arranged to fit the inner circumferential surface of the second sub-fixing portion 322, and the clamping portion 21 is arranged in the interval space between the first sub-fixing portion 321 and the second sub-fixing portion 322.

[0031] By providing the second sub-fixing portion 322, the clamping portion 21 is clamped between the first sub-fixing portion 321 and the second sub-fixing portion 322, so that the portions in contact with the two inner sides of the fixing groove 11 are all made of elastic material. Therefore, when the fixing portion 32 and the clamping portion 21 are installed in the fixing groove 11 together, the two sides of the fixing groove 11 simultaneously apply force to the first sub-fixing portion 321 and the second sub-fixing portion 322 to cause elastic deformation, thereby increasing the friction force with the side wall of the fixing groove 11 to achieve better installation strength. In addition, the first sub-fixing portion 321 and the second sub-fixing portion 322 can be designed as a split type, or they can be connected into an integrated structure.

[0032] The height of the fixing groove 11 ranges from 16mm to 16.6mm. The thickness of the first sub-fixing portion 321 and the second sub-fixing portion 322 in the natural state (not installed in the fixing groove 11) can be set to 2.5mm-2.9mm, preferably, set to 2.7mm. The deformation of the first sub-fixing portion 321 or the second sub-fixing portion 322 after being installed in the fixing groove 11 is 0.3mm-0.5mm. Setting a deformation amount that is too large will cause installation difficulties, and setting a deformation amount that is too small will also cause insufficient force.

[0033] As a preferred embodiment, Figure 3 As shown, the first sub-fixing portion 321 extends downward and is connected to the second sub-fixing portion 322 through the bottom of the fixing groove 11 , and the first sub-fixing portion 321 and the second sub-fixing portion 322 are integrally arranged.

[0034] Since the first sub-fixing portion 321 is connected to the second sub-fixing portion 322, the part used to connect the first sub-fixing portion 321 and the second sub-fixing portion 322 is the connecting portion. During installation, the bottom end of the clamping portion 21 can directly abut against the upper side surface of the connecting portion, and drive the first sub-fixing portion 321 and the second sub-fixing portion 322 to be inserted into the interior of the fixing groove 11 by directly pushing the clamping portion 21. Since the first sub-fixing portion 321 and the second sub-fixing portion 322 are both made of elastic materials, it is difficult to apply force during the installation process. The setting of the connecting portion, on the one hand, connects the two as a whole, reduces the number of parts and simplifies the production process. In particular, when the first sub-fixing portion 321 and the second sub-fixing portion 322 have the same thickness, they can be directly produced as an integral part when producing the bag skin 30. On the other hand, by pushing the connecting portion and thereby driving the first sub-fixing portion 321 and the second sub-fixing portion 322 to be inserted into the fixing groove 11, the installation operation can be made simpler. Furthermore, the bottom of the clamping portion 21 and the connecting portion may be vulcanized into an integral structure, thereby preventing the clamping portion 21 from moving relative to the connecting portion during installation, thereby improving the accuracy and reliability of installation.

[0035] In the air spring, the upper and lower sides of the bladder skin 30 are limited by components. Therefore, after the bladder skin 30 is filled with gas, it mainly expands in the radial direction. In the traditional solution, after the bladder skin 30 expands radially, the bottom of the expanded part lacks support, resulting in a lack of support for the bladder skin 30. Although the bladder skin 30 is made of rubber, in order to have a certain strength, the material of the main part of the bladder skin 30 used for expansion and stretching may have a support net and other structures in addition to rubber to make it have a certain plasticity. Therefore, after the bladder skin 30 expands and lacks support, it is easy to over-stretch, causing it to be over-bent. If this continues for a long time, the bladder skin 30 may be damaged. If the above problems are not solved, such as Figure 1 as well as Figure 3 As shown, the clamping ring 20 also includes a support portion 22 arranged on the upper side of the clamping portion 21, one end of the support portion 22 is connected to the upper side of the clamping portion 21, and the other end of the support portion 22 extends in a direction away from the clamping portion 21; the bladder skin 30 is covered to form a bladder body capable of accommodating gas, and the bladder body can expand in a radial direction under the drive of the gas and be converted into an inflated state. In the expanded state, the bottom of the bladder body can fit against the support portion 22.

[0036] When the bladder skin 30 expands, the expanded part of the bladder skin 30 is the bladder skin body 31, and the bottom of the bladder skin body 31 can naturally fall onto the upper side of the support part 22, thereby providing it with good support capabilities. Specifically, the length of the support part 22 can be set to match the maximum diameter of the bladder skin 30 after expansion. However, since the material of the bladder skin 30 itself has a certain supporting force, a large arc fillet will be formed at the transition part between the bottom and the side wall of the bladder skin body 31, and it cannot touch the support part 22 here. Therefore, the length of the support part 22 can also be set slightly smaller than the maximum diameter of the bladder skin body 31 after expansion. The extension direction of the support part 22 can be set according to actual conditions. For example, the extension direction of the support part 22 can be set to be slightly inclined upward relative to the horizontal plane, so that the bottom of the bladder skin body 31 after expansion presents a cone-like bottom, reducing the bending angle of the bladder skin body 31 and the fillet arc of the transition part between the bottom of the expanded part and the side wall, and preventing the bladder skin body 31 from overstretching.

[0037] As an optional implementation, Figure 3 As shown, the support portion 22 is configured to extend in a horizontal direction.

[0038] The horizontally arranged support portion 22 can provide a better support effect while reducing the impact on the internal volume of the bladder skin body 31 in the expanded state, so that it presents a cylindrical state after expansion and the internal force is uniform.

[0039] The clamping ring 20 can be made of a suitable hard material, for example, metal materials such as stainless steel, aluminum alloy, etc., or polymer composite materials such as plastic. As a preferred embodiment, the clamping ring 20 is made of nylon. Specifically, PA66-GF35 nylon can be selected as the preferred material. Compared with metal and other materials, nylon has better corrosion resistance and is lighter in weight.

[0040] Furthermore, in order to strengthen the friction between the inner wall of the fixing groove 11 and the fixing portion 32 of the bladder skin 30 and improve the installation strength, as Figure 4 as well as Figure 5 As shown, a protrusion structure 111 is provided on the inner side wall of the fixing groove 11 , and an extending direction of the protrusion structure 111 is perpendicular to the inner side wall of the fixing groove 11 .

[0041] By setting the protruding structure 111, on the one hand, the protruding structure 111 can increase the contact area between the inner wall of the fixing groove 11 and the fitting surface of the fixing portion 32, thereby increasing the friction force and improving the installation strength. On the other hand, the setting of the protruding structure 111 will also aggravate the deformation of the fixing portion 32, and the aggravated elastic deformation will also lead to an increase in the elastic force, thereby increasing the force acting on the inner surface of the fixing groove 11, thereby improving the installation strength.

[0042] The protruding structure 111 can be selectively set to different structures according to actual conditions. For example, the protruding structure 111 is provided in multiple forms and is evenly distributed on the inner wall of the fixing groove 11 in an array. However, the spacing in the fixing groove 11 is small, and conventional structures such as protruding points and horizontal stripes are difficult to process and form, which puts forward higher requirements on the process. In this application, Figure 4 as well as Figure 5 As shown, the protruding structure 111 is a threaded structure arranged on the inner wall of the fixing groove 11, and the threaded structure includes a first thread arranged on the first side of the inner wall of the fixing groove 11 and a second thread arranged on the second side of the inner wall of the fixing groove 11, and the first thread and the second thread have the same rotation direction.

[0043] Since both inner side walls of the fixing groove 11 are cylindrical surfaces, even if the interval space is small, processing threads on the cylindrical surface is a relatively mature technology, and the threads on a single side wall surface, such as the first thread, can be directly processed in one go, with high processing efficiency and effectiveness. Specifically, the thread form can be selected as a triangular embossing, and the pitch can be set to 1.3-1.8 mm, preferably, 1.5 mm.

[0044] In addition, due to the setting of the protruding structure 111, the installation of the combination formed by the fixing part 32 and the clamping part 21 generates a certain resistance. However, during installation, the characteristic that the first thread and the second thread have the same rotation direction can also be utilized. By rotating the combined structure formed by the fixing part 32 and the clamping part 21 along the rotation direction of the first thread and the second thread, it can be easily installed in the fixing groove 11 under the forward action of the thread.

[0045] The second aspect of the present application further provides an air spring, comprising an upper top seat and an air spring bladder skin 30 sealing structure in the above technical solution, wherein the bladder skin 30 is sealingly connected to the upper top seat.

[0046] The characteristics and advantages of the air spring are consistent with the sealing structure of the air spring bladder 30 described above, and will not be repeated here.

[0047] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present disclosure, and in actual applications, various changes may be made thereto in form and detail without departing from the scope of the present disclosure.

Claims

1. An air spring bladder skin sealing structure, characterized in that: The air spring bladder skin sealing structure comprises: Fix the lower seat, the clamping ring and the bladder skin; A fixing portion is provided at the lower end of the bladder skin, and the fixing portion includes a first sub-fixing portion extending from the lower end of the bladder skin, and the first sub-fixing portion is annular and extends in a vertical direction; The clamping ring comprises a clamping portion, which is annular and can be fitted on the outer circumferential surface of the first sub-fixing portion; The fixed lower seat is provided with a fixing groove arranged toward the bag skin, the fixing groove is annular, the lower ends of the clamping portion and the fixing portion can be extended into and filled in the fixing groove together, and can push the inner side wall of the fixing groove, so that the side wall of the fixing groove has a deformation tendency to expand outward; The clamping ring further comprises a supporting portion disposed on the upper side of the clamping portion, one end of the supporting portion is connected to the upper side of the clamping portion, and the other end of the supporting portion extends in a direction away from the clamping portion; The bladder skin is coated with a bladder body capable of containing gas. The bladder body can expand in a radial direction under the drive of the gas and be converted into an inflated state. In the inflated state, the bottom of the bladder body can fit the support part; The fixing portion further includes a second sub-fixing portion, the second sub-fixing portion is connected to the first sub-fixing portion and is arranged at an interval, the outer circumferential surface of the clamping portion is arranged to fit the inner circumferential surface of the second sub-fixing portion, and the clamping portion is arranged in the interval space between the first sub-fixing portion and the second sub-fixing portion; The first sub-fixing portion extends downward and is connected to the second sub-fixing portion through the bottom of the fixing groove, and the first sub-fixing portion and the second sub-fixing portion are integrally arranged.

2. The air spring bladder skin sealing structure according to claim 1, characterized in that: The support portion is configured to extend along a horizontal direction.

3. The air spring bladder skin sealing structure according to claim 1, characterized in that: The clamping ring is made of nylon.

4. The air spring bladder skin sealing structure according to claim 1, characterized in that: The inner side wall of the fixing groove is provided with a protrusion structure, and the extension direction of the protrusion structure is perpendicular to the inner side wall of the fixing groove.

5. The air spring bladder skin sealing structure according to claim 4, characterized in that: The protrusion structures are provided in plurality and are evenly distributed on the inner side wall of the fixing groove in an array shape.

6. The air spring bladder skin sealing structure according to claim 4, characterized in that: The protruding structure is a threaded structure arranged on the inner wall of the fixing groove, and the threaded structure includes a first thread arranged on the first side of the inner wall of the fixing groove and a second thread arranged on the second side of the inner wall of the fixing groove, and the first thread and the second thread have the same rotation direction.

7. An air spring, characterized in that: It comprises an upper top seat and an air spring bladder skin sealing structure as described in any one of claims 1 to 6, wherein the bladder skin is sealingly connected to the upper top seat.

Images