CN211820508U - Air spring with elastic reinforcement and automobile suspension device - Google Patents

Abstract

The utility model discloses a take air spring of elasticity reinforcement, include: the leather bag is internally provided with a closed leather bag space for storing compressed gas, wherein the wall body of the leather bag is integrally vulcanized from inside to outside by inner layer rubber, first layer cord fabric, second layer cord fabric and outer layer rubber, and cord threads on the first layer cord fabric and the second layer cord fabric are arranged in an oblique manner; the elastic reinforcing piece is arranged in the leather bag space, and the stretching direction of the elastic reinforcing piece is the same as that of the leather bag. On the basis of the above, the utility model also discloses an automobile suspension device. The utility model discloses an air spring bearing capacity is strong, compact structure, small, can break through narrow and small application space's restriction.

Description

Air springs with elastic reinforcements and automotive suspensions

technical field

The utility model relates to the field of springs. More specifically, the present invention relates to an air spring with elastic reinforcement and an automobile suspension.

Background technique

In the damping system, it is usually necessary to apply elastic elements to achieve damping effect. With the development of many mechanical equipment towards the refinement and compactness of the structure, the trend of development is becoming more and more obvious, especially in the case where the application space is severely limited, how to ensure the bearing capacity of the elastic element has become a must in the design of the elastic element. An important problem faced, and the current elastic element still cannot solve the aforementioned problem well.

Utility model content

An object of the present invention is to solve at least the above-mentioned problems and to provide at least the advantages which will be explained later.

The inventor found that in some occasions with heavy load and compact space, such as some SUVs with large rear space design requirements or partially modified small and medium-sized RVs, it is difficult to design suitable elastic elements for vibration reduction.

According to the previous solution, if the traditional air spring is used, there is at least one serious problem, that is, the air spring occupies a large volume and is inconvenient to be arranged in the aforementioned applications where the space is limited; and if a leaf spring or a large diameter is used Metal elastic elements such as coil springs will reduce the vibration damping effect, and the further consequences in the field of vehicles will reduce the comfort of the vehicle, and the metal spring has a large unsprung mass due to its large weight, which makes the vehicle maneuverability. also decreased accordingly.

Therefore, it is a difficult technical problem in the art to design an elastic element that can meet the requirements of large bearing weight, very compact structure, and small overall occupied space.

In order to solve the above-mentioned technical problems, the utility model has carried out careful design and verification according to the characteristics of various elastic elements, and conceived a new air spring, that is, on the basis of the skin bag, an elastic reinforcement is introduced, and the skin bag is not changed. In the case of the overall volume, the elastic reinforcement is arranged inside the skin bag and organically fused with the skin bag. In further optimization, the inventor also considered various aspects of the specific design of the elastic reinforcement, such as the load-bearing capacity of the elastic reinforcement, and how to design the space that can compress the elastic reinforcement to the maximum extent, so as to avoid its impact on the skin bag. Excessive occupation of the internal space will affect the elasticity of the skin bag itself and so on.

Under the concept of the above utility model, the present utility model provides an air spring with an elastic reinforcing member and an automobile suspension. The air spring of the present utility model has strong bearing capacity, compact structure and small volume, and can break through the limitation of narrow application space. .

The utility model is realized through the following technical solutions:

The first aspect of the present invention

A first aspect provides an air spring with an elastic reinforcement, including:

The bladder has a closed bladder space inside for storing compressed gas, wherein the wall of the bladder is integrally vulcanized from the inside to the outside by the inner layer of glue, the first layer of cord fabric, the second layer of cord fabric and the outer layer of glue. , the cords on the first layer of cord fabric and the second layer of cord fabric are arranged obliquely;

The elastic reinforcement is arranged inside the bladder space, and the expansion and contraction direction of the elastic reinforcement is the same as the expansion and contraction direction of the skin.

In some embodiments, the air spring further includes at least one hoop, which divides the space of the bladder into a plurality of communicating air chambers along the expansion and contraction direction of the skin.

In some embodiments, the plenum is provided in the shape of a cylinder.

In some embodiments, the hoop fits within the wall of the bladder to form a unitary structure.

In some embodiments, the elastic reinforcement is a coil spring.

In some embodiments, the air spring further includes a first sealing member and a second sealing member, which are respectively used to seal two openings provided at both ends of the bladder along the compression direction;

Wherein, the first seal includes a first seal block and a first pressure ring, the second seal includes a second seal block and a second pressure ring, and the first seal block is connected to the inner wall of the bladder A first anti-skid groove is provided, and a second anti-skid groove is provided at the connection between the second sealing block and the inner wall of the bladder,

The first sealing block and the second sealing block respectively protrude into the corresponding opening and are in contact with the inner wall of the skin bag, and the first pressure ring and the second pressure ring are respectively in contact with the The first anti-skid groove and the second anti-skid groove are respectively sleeved on the outer wall of the skin bag to press the skin bag in the first anti-skid groove and the second anti-skid groove respectively.

In some embodiments, a first rubber pad and a second rubber pad are respectively provided at both ends of the elastic reinforcement along the telescopic direction; wherein, the first rubber pad is provided at one end of the elastic reinforcement and the Between the first sealing blocks, the second rubber pad is arranged between the other end of the elastic reinforcing member and the second sealing block.

In some embodiments, the first sealing block extends toward the elastic reinforcing member to form an accommodating cavity, one end of the elastic reinforcing member is installed in the accommodating cavity, and the second sealing block faces the elastic reinforcement The reinforcing piece extends in the direction to form a convex block, and the convex block protrudes into the connecting hole provided at the other end of the elastic reinforcing piece.

The second aspect of the present invention

A second aspect provides an automobile suspension device, comprising:

The above-mentioned air spring, as well as the axle and lower swing arm connected to the wheel;

Wherein, one end of the air spring is provided with a first threaded hole for connecting with the lower swing arm, and the other end of the air spring is provided with a second threaded hole for connecting with a load-bearing body or frame.

The technical effects of the embodiments of the present invention include at least:

In some embodiments, the air spring of the present invention maintains a relatively large bearing capacity while ensuring its own compact structure, which makes it very suitable for applications where the bearing weight is large, the structure is compact, and the application space is limited.

In some embodiments, the vehicle suspension device of the present invention improves the ride comfort of the vehicle.

Other advantages, objects, and features of the present invention will be manifested in part by the description below, and in part will be understood by those skilled in the art from the study and practice of the present invention.

Description of drawings

1 is a schematic structural diagram of one of the air springs with elastic reinforcements in some embodiments of the present invention;

2 is another schematic structural diagram of an air spring with an elastic reinforcing member in some embodiments of the present invention;

3 is a schematic structural diagram of a skin bag in some embodiments of the present invention;

4 is a schematic diagram of the internal structure of the wall of the skin bag in some embodiments of the present invention;

5 is a schematic diagram of the arrangement of the cords on the first layer of cord fabric and the second layer of cord fabric in the wall in some embodiments of the present invention;

6 is a schematic diagram of an internal structure of an air spring with an elastic reinforcing member in some embodiments of the present invention;

7 is another schematic diagram of the internal structure of the air spring with elastic reinforcement in some embodiments of the present invention;

Fig. 8 is the partial enlarged structural schematic diagram of N part in Fig. 7;

9 is a schematic structural diagram of an automobile suspension device in some embodiments of the present invention;

Reference numerals: air spring 100 with elastic reinforcement, skin 110, skin space 111, first air chamber 111a, second air chamber 111b, wall 112, inner layer glue 113, first layer of cord 114, second layer Cord 115, outer layer glue 116, hoop 117, first opening 118, second opening 119, elastic reinforcement 120, connecting hole 121, limiting hole 122, first rubber pad 130, second rubber pad 140, first Sealing block 150, air intake hole 151, accommodating cavity 152, positioning pin 154, first threaded hole 153, first anti-skid groove 155, second sealing block 160, convex block 161, limit block 162, second anti-skid groove 163, The second threaded hole 164 , the first pressure ring 170 , the second pressure ring 180 , the wheel 200 , the axle 300 , the lower swing arm 400 , the pull rod 500 , the connecting plate 600 , and the vehicle suspension device 1000 .

Detailed ways

The present utility model will be further described in detail below with reference to the accompanying drawings, so that those skilled in the art can refer to the text of the description to implement it accordingly.

It should be noted that in the description of the present invention, the terms "horizontal", "longitudinal", "upper", "lower", "front", "rear", "left", "right" and "vertical" , "horizontal", "top", "bottom", "inside", "outside" and other indications of orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, only for the convenience of describing the present utility model and simplifying the description , does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be construed as a limitation on the present invention.

first embodiment

As shown in FIGS. 1-8 , the first embodiment provides an air spring 100 with an elastic reinforcement. Referring to FIGS. 1-5 , the air spring 100 includes:

The bladder 110 has a closed bladder space 111 inside it for storing compressed gas, wherein the wall 112 of the bladder 110 is composed of an inner layer of rubber 113 , a first layer of cord 114 , a second layer of cord 115 and an outer layer of rubber 116 is integrally vulcanized from the inside to the outside, and the cords on the first layer of cord fabric 114 and the second layer of cord fabric 115 are arranged obliquely;

The elastic reinforcement member 120 is disposed inside the bladder space 111 , and the expansion and contraction direction of the elastic reinforcement member 120 is the same as the expansion and contraction direction of the skin bag 110 .

In this embodiment, the working principle of the skin bag 110 is as follows: the compressed gas is introduced into the skin bladder space 111 , so that the skin bag 110 becomes an elastic element, and its elastic function can be realized by squeezing the skin bag 110 during operation. The air spring such as the bladder 110 has very good cushioning performance and excellent vibration damping effect.

As shown in FIGS. 3 and 4 , the wall body 112 of the bladder 110 (wherein, the wall body 112 specifically refers to the skin wall), in addition to the inner layer of glue 113 and the outer layer of glue 116 , also includes a first layer of cord 114 , a second layer of The two-layer cord fabric 115 is integrally vulcanized from the aforementioned various materials, which enhances the toughness and bearing capacity of the bladder 110 and prolongs the service life. In addition, the skin bag 110 becomes a whole after vulcanization, which facilitates the skin bag 110 to be replaced individually, improves the production efficiency of the skin bag 110 , and reduces the production cost of the skin bag 110 mold and the maintenance cost during the use of the skin bag 110 .

The inner layer glue 113 and the outer layer glue 116 may be composed of neoprene rubber. In some embodiments, it can also be made of other elastic materials, such as silica gel, mixed rubber containing natural rubber and neoprene, and the like.

Furthermore, as shown in FIG. 5 , the cords on the first layer of cord fabric 114 and the cords on the second layer of cord fabric 115 are arranged obliquely. The cords of the second layer are not parallel to the cords on the second layer of cord fabric 115 . This arrangement can reduce the expanded outer diameter of the bladder 110 and increase the burst pressure, thereby improving the working pressure, bearing capacity and safety of the air spring 100 .

In some embodiments, cord rubber is further provided between the first layer of cord fabrics 114 and the second layer of cord fabrics 115, and the cord fabric rubber is a mixed rubber containing natural rubber and neoprene rubber.

Further, the air spring 100 of this embodiment is also provided with an elastic reinforcing member 120, so that the overall bearing capacity of the air spring 100 is jointly borne by the elastic reinforcing member 120 and the skin bag 110, thereby reducing the bearing capacity of the skin bag 110 and improving the skin bag 110. service life.

Due to the introduction of the elastic reinforcement 120, the overall load-bearing capacity of the air spring 100 is greatly improved. In the air spring 100 of the present embodiment, the elastic reinforcing member 120 is arranged inside the skin bag 110, which greatly improves the bearing capacity of the air spring without increasing the overall volume of the air spring 100; it is for this reason that this The air spring 100 of the embodiment is very suitable for applications where the load-bearing weight is heavy, the structure is compact, and the application space is limited.

Furthermore, it should be noted that the elastic reinforcing member 120 can be composed of all objects with elastic effect. In this embodiment, the elastic reinforcing member 120 is preferably set as a coil spring. The coil spring has a large bearing capacity and can improve the bearing capacity of the air spring as a whole. Secondly, the coil spring is small in size and occupies a small space. The influence on the storage volume of the compressed gas in the bladder space 111 is almost negligible, and it is also convenient to design the bearing capacity and stiffness of the spring wire by changing the diameter or pitch of the spring wire.

In some other embodiments, the elastic reinforcement 120 may also be a colloidal substance, such as a rubber element with certain elastic support and stretchability.

In this embodiment, the air spring 100 further includes at least one hoop 117 , and the hoop 117 divides the bladder space 111 into a plurality of connected air chambers along the expansion and contraction direction of the skin 110 .

In this embodiment, the number of the hoop 117 is one, and in other embodiments, there may be more. The skin bag 110 is sheathed with a hoop 117 in the telescopic direction and is divided into two curved bags by the hoop 117, that is to say, inside the skin bag 110, the skin space 111 is divided into two connected air chambers, namely the first air chamber 111a and the second air chamber 111b. The hoop 117 limits the expansion of the middle part of the skin bag 110 , reduces the external force that the entire skin bag 110 bears, and improves the service life of the skin bag 110 .

In this embodiment, the air chamber is configured in a cylindrical shape. Compared with the structure in which the air chamber is arranged in an arc type or other shape, the cylindrical air chamber increases the internal volume of the air spring, which is beneficial to reduce the stiffness of the air spring and improve the vibration damping ability.

In this embodiment, the hoop 117 is fitted into the wall 112 of the skin bag 110 to form an integrated structure.

6 and 7 on the basis of FIG. 1 , in this embodiment, the air spring 100 further includes a first sealing member and a second sealing member, which are respectively used to seal the two ends of the skin bag 110 along the telescopic direction. Two openings provided;

The first sealing member includes a first sealing block 150 and a first pressing ring 170, the second sealing member includes a second sealing block 160 and a second pressing ring 180, and the first sealing block 150 and the A first anti-skid groove 155 is provided at the connection of the inner wall of the skin bag 110 , and a second anti-skid groove 163 is provided at the connection between the second sealing block 160 and the inner wall of the skin bag 110 ,

The first sealing block 150 and the second sealing block 160 respectively protrude into the corresponding openings and are in contact with the inner wall of the bladder 110 . The first pressing ring 170 and the second pressing ring 180 Corresponding to the first anti-slip groove 155 and the second anti-slip groove 163 are respectively sleeved on the outer wall of the skin bag 110 to press the skin bag 110 on the first anti-slip groove 155 and the second anti-slip groove 163 respectively. into the second anti-skid groove 163 .

In this embodiment, the two openings specifically refer to the first opening 118 and the second opening 119;

The purpose of setting the first sealing block 150 and the second sealing block 160 is to facilitate the connection of the air spring 100 with external equipment; the other is to set the air spring 100 as a detachable device, which is convenient for disassembly, installation and maintenance. Or cleaning and so on. The first sealing block 150 and the second sealing block 160 can be made of metal or plastic material, such as iron, aluminum or nylon material.

In addition, in order to introduce compressed gas into the bladder space 111 , the first sealing block 150 is further provided with an air inlet 151 , and a valve (not shown in the figure) is arranged in the air inlet 151 .

The purpose of arranging the first pressing ring 170 and the second pressing ring 180 is to tightly seal between the bladder 110 and the first sealing block 150 and the second sealing block 160 . In the aforementioned sealing measures, the wall body 112 of the bladder 110 is crimped on the outer wall by the first pressing ring 170 and the second pressing ring 180; wherein, the crimping process used is simple and mature, and is easy to disassemble, install and press The ring can not only ensure the good sealing performance of the skin bag 110 , but also facilitate the replacement of the skin bag 110 .

More specifically, the first pressure ring 170 and the second pressure ring 180 are made of steel material, the shape of which matches the shape of the skin bag 110 and is a circular ring structure; wherein the surface of the pressure ring is trivalent Chrome plating treatment. The pressure ring of this embodiment has at least the following superior properties: the simple structural design reduces the manufacturing cost of the pressure ring, and the trivalent chromium electroplating treatment improves the corrosion resistance of the pressure ring and is environmentally friendly.

Further, a first anti-skid groove 155 is provided at the connection between the first sealing block 150 and the inner wall of the bladder 110 , and a second anti-skid groove 163 is provided at the connection between the second sealing block 160 and the inner wall of the bladder 110 . ; To press the bladder 110 in the first anti-skid groove 155 and the second anti-skid groove 163 respectively. The sealing performance of the skin bag 110 after being connected with the first sealing block 150 and the second sealing block 160 can be improved.

Further, the number of the first anti-skid grooves 155 and the second anti-skid grooves 163 is multiple. FIG. 8 shows the specific structure of the second anti-skid groove 163 , wherein the depth d of the second anti-skid groove 163 is set to be half of the height h. In this embodiment, the second anti-skid groove 163 is set in a semi-cylindrical shape, that is to say, a section of the second anti-skid groove 163 is a semi-circle. As shown in FIG. 8 , the radius of the semi-cylindrical shape is r , h=2d=2r. This solution not only reduces the processing cost, but also ensures the tightness of the withholding.

As for the structure of the first anti-skid groove 155 , since it is similar to the second anti-skid groove 163 , it can be designed with reference to the second anti-skid groove 163 .

Next, it should be noted that, in this embodiment, the elastic reinforcing member 120 is disposed between the first sealing block 150 and the second sealing block 160 along the telescopic direction, and is connected to the first sealing block 150 and the second sealing block 160 respectively. conflict.

Further, in this embodiment, the two ends of the elastic reinforcing member 120 along the telescopic direction are respectively provided with a first rubber pad 130 and a second rubber pad 140 .

Specifically, the first rubber pad 130 is arranged between one end of the elastic reinforcing member 120 and the first sealing block 150, and the second rubber pad 140 is arranged between the other end of the elastic reinforcing member 120 and the second sealing block 160, which can be elastic A buffering effect is provided between the reinforcing member 120 and the first sealing block 150 and the second sealing block 160, especially when the elastic reinforcing member 120 is a metal spring, it can be used as a buffer medium to avoid the elastic reinforcing member 120 and the first sealing block 150. , The friction between the second sealing blocks 160 causes abnormal noise, and also plays the role of protecting the elastic reinforcement 120 , the first sealing block 150 and the second sealing block 160 .

As shown in FIG. 6 , further, in this embodiment, the first sealing block 150 extends toward the elastic reinforcing member 120 to form an accommodating cavity 152 , and one end of the elastic reinforcing member 120 is installed in the accommodating cavity In 152 , the second sealing block 160 extends toward the elastic reinforcing member 120 to form a protrusion 161 , and the protrusion 161 extends into the connecting hole 121 provided at the other end of the elastic reinforcing member 120 .

When assembling the air spring, the first rubber pad 130 is installed in the accommodating cavity 152, and the second rubber pad 140 is sleeved on the bump 161 in contact with the second sealing block 160 (correspondingly, the The second rubber pad 140 is provided with a through hole that matches the size of the bump 161, and the second rubber pad 140 is sleeved on the bump 161 through the through hole. One end of the elastic reinforcing member 120 is inserted into the accommodating cavity 152 in contact with the first rubber pad 130 , and the connecting hole 121 at the other end is sleeved on the bump 161 and then in contact with the second rubber pad 140 . The foregoing structural design can make the structure of the air spring in this embodiment more compact and stable.

Further, a limiting block 162 is provided on the protruding block 161 , a limiting hole 122 matching the limiting block 162 is provided on the elastic reinforcing member 120 , and the connecting hole 121 is inserted into the protruding block 161 In the middle, the limiting block 162 is clamped in the limiting hole 122 , which further improves the stability of the connection between the second sealing block 160 and the elastic reinforcing member 120 .

It should be noted that, the limiting block 162 and the protruding block 161 may be movably connected, or may be fixed connection, or even an integrally formed structure.

The assembly of the air spring 100 can be carried out according to the following steps:

S1. Press one of the openings of the skin bag (ie, the first opening) into the first anti-skid groove 155 corresponding to the first sealing block 150 through the first pressing ring 170, so that the corresponding inner wall of the opening of the skin bag sinks into the first anti-skid groove 155 Then install the first rubber pad 130, the elastic reinforcement 120, the second rubber pad 140 and the second sealing block 160 on the first sealing block 150 in sequence;

S2. Press the other opening of the skin bag (ie, the above-mentioned second opening) into the second anti-skid groove 163 corresponding to the second sealing block 160 through the second pressing ring 180, so that the corresponding inner wall of the opening of the skin bag sinks into the second anti-skid groove 163 Inside.

In some embodiments, the second pressure ring 180 may also be assembled first, and then other structures are installed until the first pressure ring 170 is installed, and the entire assembly of the air spring 100 is completed.

Second Embodiment

Continuing to refer to FIG. 9, the second embodiment provides an automobile suspension device 1000, including:

The air spring 100 described in the first embodiment, the axle 300 and the lower swing arm 400 connected to the wheel 200;

Wherein, one end of the air spring 100 is provided with a first threaded hole 153 for connecting with the carrier body or frame, and the other end is provided with a second threaded hole 164 for connecting with the lower arm 400 .

In this embodiment, the first threaded hole 153 is specifically arranged on the top of the first sealing block in the air spring 100, and is connected to the load-bearing body or frame through a connecting plate 600; the top of the first sealing block A positioning pin 154 is also provided for positioning the air spring 100 when it is installed; the second threaded hole 164 is specifically provided at the bottom of the second sealing block in the air spring 100 for connecting with the lower swing arm 400 connect. The axles 300 are respectively rotatably connected with the lower swing arm 400 and the pull rod 500 . Wherein, for the structure of the air spring 100, refer to the description in the first embodiment.

The vehicle suspension device 1000 of this embodiment uses the air spring 100 of the first embodiment, thereby improving the comfort of the vehicle. The specific principle is as follows: when the wheel 200 jumps up and down, the lower swing arm 400 swings up and down accordingly. At this time, the tire vibration is transmitted to the air spring 100 with elastic reinforcement through the lower swing arm 400. The compressed air in the air spring bag space 111 and the elastic reinforcement 120 retransmit the vibration to the load-bearing body or frame. The ideal nonlinear mechanical properties of the compressed air in the air spring 100 and the air bag 110, and the elastic reinforcement 120 make the The vibration transmitted to the body is greatly reduced, which improves the ride comfort of the vehicle.

Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the description and the embodiments, and can be applied to various fields suitable for the present invention. For those skilled in the art, Additional modifications may readily be implemented, therefore, the invention is not limited to the specific details and illustrations shown and described herein without departing from the general concept defined by the appended claims and the scope of equivalents.

Claims (10)

1. Air spring with elastic reinforcement, characterized in that it comprises:

the leather bag is internally provided with a closed leather bag space for storing compressed gas, wherein the wall body of the leather bag is integrally vulcanized from inside to outside by inner layer rubber, first layer cord fabric, second layer cord fabric and outer layer rubber, and cord threads on the first layer cord fabric and the second layer cord fabric are arranged in an oblique manner;

the elastic reinforcing piece is arranged in the leather bag space, and the stretching direction of the elastic reinforcing piece is the same as that of the leather bag.

2. The air spring of claim 1, further comprising at least one hoop dividing the bladder space into a plurality of connected air chambers in a direction of expansion and contraction of the bladder.

3. Air spring according to claim 2, characterized in that the air chamber is arranged cylindrically.

4. The air spring of claim 2, wherein said hoop is fitted into the wall of said bladder to form a unitary structure.

5. Air spring according to any of claims 1 to 4, characterized in that the resilient reinforcement is a helical spring.

6. The air spring according to claim 5, further comprising a first sealing member and a second sealing member for sealing two openings provided at both ends of the bellows in the expansion and contraction direction, respectively;

wherein the first sealing element comprises a first sealing block and a first pressing ring, the second sealing element comprises a second sealing block and a second pressing ring, a first anti-skid groove is arranged at the joint of the first sealing block and the inner wall of the leather bag, a second anti-skid groove is arranged at the joint of the second sealing block and the inner wall of the leather bag,

the first sealing block and the second sealing block respectively extend into the corresponding openings and are abutted and connected with the inner wall of the leather bag, and the first pressing ring and the second pressing ring are respectively sleeved on the outer wall of the leather bag at the corresponding positions of the first anti-skidding groove and the second anti-skidding groove so as to respectively press and locate the leather bag in the first anti-skidding groove and the second anti-skidding groove.

7. The air spring according to claim 6, wherein a first rubber pad and a second rubber pad are respectively arranged at two ends of the elastic reinforcing member along the expansion direction; the first rubber pad is arranged between one end of the elastic reinforcing piece and the first sealing block, and the second rubber pad is arranged between the other end of the elastic reinforcing piece and the second sealing block.

8. The air spring of claim 7, wherein said first sealing block extends in a direction toward said resilient reinforcement member to form a receiving cavity, one end of said resilient reinforcement member is mounted in said receiving cavity, and said second sealing block extends in a direction toward said resilient reinforcement member to form a protrusion, said protrusion extending into a connecting hole provided at the other end of said resilient reinforcement member.

9. The air spring according to claim 8, wherein the protrusion is provided with a stopper, the elastic reinforcement is provided with a stopper hole matching with the stopper, and the stopper is clamped in the stopper hole when the protrusion is inserted into the connecting hole.

10. Automotive suspension device characterized by comprising:

the air spring of any of claims 1-9, and an axle, a lower swing arm, connected to a wheel;

and one end of the air spring is provided with a first threaded hole for connecting with the lower swing arm, and the other end of the air spring is provided with a second threaded hole for connecting with a load-bearing vehicle body or a vehicle frame.

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