Air spring bag with vulcanized support ring composite cord structure

Abstract

The utility model discloses a kind of air spring bladder with vulcanization supporting ring composite cord structure, including bladder, the bladder is divided into bladder big head, bladder working area and bladder small head, the bladder big head part is three layer cord structure, the bladder working area and bladder small head part are single layer cord structure, and the overall thickness of bladder working area and bladder small head part is thinner than the thickness of bladder big head part, the inner diameter of bladder working area gradually decreases from bladder big head to bladder small head area, and supporting ring is fixed on the inner wall of bladder big head by vulcanization bonding mode. The air spring bladder of the utility model uses different reinforcing layer structure design, which can not only ensure the expansion outer diameter and burst pressure of the product, but also effectively reduce the product thickness of working area to improve its flexibility, reduce the air spring hysteresis force and improve the product comfort.

Description

Technical Field

[0001] This utility model relates to an air spring bladder with a composite cord structure featuring a vulcanized support ring, belonging to the field of air spring technology. Background Technology

[0002] Air springs possess non-linear stiffness characteristics compared to traditional coil springs. They can be matched with different initial stiffnesses to varying loads, consistently ensuring ride comfort. During wheel bounce and air spring compression, the air spring stiffness is increased to suppress impacts transmitted from the road surface to the vehicle body through the wheels, preventing the buffer block from puncturing and further enhancing ride comfort and handling stability.

[0003] An air spring mainly consists of a bladder, an upper chamber, and a piston, forming a closed space. The bladder, as a core component of the air spring, directly affects comfort and handling stability. Most existing air spring bladders have two layers of cord reinforcement, resulting in relatively high spring hysteresis, which affects comfort. Furthermore, the aluminum sleeve support ring and bladder rely on friction for support, posing a risk of sleeve detachment. Summary of the Invention

[0004] The purpose of this invention is to provide an air spring jacket with a composite cord structure featuring a vulcanized support ring, thereby improving the comfort of the air spring and the stability of the aluminum sleeve.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: a spring jacket with a composite cord structure and a vulcanized support ring, comprising a jacket, the jacket being divided into a large end, a working area, and a small end. The large end is composed of a three-layer cord structure, while the working area and the small end are composed of a single-layer cord structure. The overall thickness of the working area and the small end is thinner than that of the large end. The inner diameter of the working area gradually decreases from the large end to the small end. A support ring is fixed to the inner wall of the large end by vulcanization bonding.

[0006] As a further preferred embodiment of this solution, the support ring is located inside the lower part of the large head of the cystic skin and near the transition section between the large head of the cystic skin and the working area of ​​the cystic skin.

[0007] As a further preferred embodiment of this solution, the large end of the sac skin comprises a first inner layer of rubber, an inner layer of cord, a middle cord, an outer layer of cord, and a first outer layer of rubber.

[0008] As a further preferred embodiment of this solution, both the working area of ​​the sac and the small head of the sac include a second inner layer of rubber, a single layer of cord, and a second outer layer of rubber.

[0009] As a further preferred embodiment of this solution, the first inner rubber layer and the second inner rubber layer are the same layer of rubber that jointly covers the inside of the capsule skin.

[0010] As a further preferred embodiment of this solution, the inner layer cord and the single layer cord are the same cord that runs through the entire sac skin.

[0011] As a further preferred embodiment of this solution, the vulcanized bonding surface of the support ring is phosphated and coated with an adhesive layer, while the non-vulcanized bonding surface is sprayed with an electroplated coating.

[0012] The beneficial effects of this utility model are as follows: The working area of ​​the air spring bladder uses a single-layer cord design, which can effectively reduce the thickness of the bladder in the working area. The reduction in thickness and the single-layer cord work together to reduce the hysteresis force of the air spring. The support ring is bonded to the inner wall of the bladder through vulcanization, preventing the aluminum sleeve and support ring from separating due to insufficient friction between the support ring, bladder, and aluminum sleeve. Attached Figure Description

[0013] Figure 1 Schematic diagram of the spring bladder;

[0014] Figure 2 Cross-sectional view of the large end face of the cystic skin;

[0015] Figure 3 Cross-sectional view of the working area and small head end of the sac skin;

[0016] Figure 4 Schematic diagram of the cross-distribution of the large-head curtain cords;

[0017] Figure 5 Schematic diagram of the cord distribution in the working area and small-end section;

[0018] Figure 6 Support ring structure diagram.

[0019] The markings in the diagram are as follows: 1. Capsule skin, 2. Support ring, a. Capsule skin large end, a-1. Inner layer rubber, a-2. Inner layer cord, a-3. Middle cord, a-4. Outer layer cord, a-5. First outer layer rubber, b. Capsule skin working area, a-1. Inner layer rubber, a-2. Inner layer cord, b-1. Second outer layer rubber, b-2. Single layer cord, c. Capsule skin small end, 2-1. Support ring vulcanized bonding surface, 2-2. Support ring non-vulcanized bonding surface. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] like Figures 1 to 6As shown, a spring jacket with a composite cord structure featuring a vulcanized support ring includes a jacket 1, which is divided into a large end a, a working area b, and a small end c. The large end a has a three-layer cord structure, while the working area b and small end c have single-layer cord structures. The overall thickness of the working area b and small end c is thinner than that of the large end a. The inner diameter of the working area b gradually decreases from the large end a to the small end c. A support ring 2 is fixed to the inner wall of the large end a via vulcanization bonding. This support ring 2 is located inside the large end a, below it, and near the transition section between the large end a and the working area b.

[0022] In this embodiment, the large end a of the bladder skin comprises an inner rubber layer a-1, an inner cord layer a-2, a middle cord layer a-3, an outer cord layer a-4, and an outer rubber layer a-5. The cord distribution is shown below. Figure 4 The inner rubber layer a-1 primarily serves an airtight function, ensuring no gas leakage during the operation and shutdown of the air spring assembly. The outer rubber layer a-5 primarily resists external environmental impact on the cords and inner rubber layer, and also provides airtightness. The inner cord a-2, middle cord a-3, outer cord a-4, outer rubber a-5, and inner rubber layer a-1 work together to ensure the expansion diameter and burst pressure of the air spring bladder during operation.

[0023] In this embodiment, the working area b and the small end c of the bladder are designed with a single layer of cord, which can ensure the working pressure of the product while effectively reducing the thickness of the bladder and enhancing the flexibility of the area. The working area b and the small end c of the bladder include an inner layer of rubber a-1, a single layer of cord b-2, and an outer layer of rubber b-3. Specifically, the inner layer of rubber in the working area b and the inner layer of rubber in the large end a are the same layer covering the interior of the bladder; the single layer of cord and the inner cord a-2 are the same layer covering the entire bladder.

[0024] In this embodiment, the support ring 2 is bonded to the inner wall of the casing by vulcanization to fix the position of the aluminum casing. The vulcanized bonding surface 2-1 of the support ring is phosphated, and an adhesive is sprayed onto the surface to enhance the bonding strength between the metal and rubber after vulcanization. The non-vulcanized bonding surface 2-2 of the support ring is electroplated to prevent corrosion of the metal ring.

[0025] This type of air spring cover has good applicability and can also be used for air spring covers with straight or irregular structures. Similarly, the support ring can also be vulcanized on the outer surface of the cover.

[0026] In summary, the air spring bladder adopts a different reinforcement layer structure design, which can not only ensure the expansion outer diameter and burst pressure of the product, but also effectively reduce the thickness of the product in the working area, improve its flexibility, and reduce the air spring hysteresis force; effectively improve the product comfort, and fix the support ring through vulcanization bonding, thereby effectively fixing the position of the aluminum casing.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that the above embodiments do not limit the scope of protection of this utility model in any way, and all technical solutions obtained by equivalent substitution or other means fall within the scope of protection of this utility model. Parts not covered by this utility model are the same as or can be implemented using existing technology.

Claims

1. A spring jacket with a composite cord structure featuring a vulcanized support ring, comprising a jacket, wherein the jacket is divided into a large end, a working area, and a small end, characterized in that, The large head of the bladder is divided into a three-layer cord structure, while the working area and small head of the bladder are divided into a single-layer cord structure. The overall thickness of the working area and small head of the bladder is thinner than that of the large head. The inner diameter of the working area gradually decreases from the large head to the small head. A support ring is fixed on the inner wall of the large head of the bladder by vulcanization bonding.

2. The air spring bladder with a composite cord structure and vulcanized support ring as described in claim 1, characterized in that, The support ring is located inside the lower part of the large head of the sac and near the transition section between the large head of the sac and the working area of ​​the sac.

3. The air spring bladder with a composite cord structure featuring a vulcanized support ring according to claim 1, characterized in that, The large end of the scabbard comprises a first inner rubber layer, an inner cord layer, a middle cord layer, an outer cord layer, and a first outer rubber layer.

4. The air spring bladder with a composite cord structure and vulcanized support ring according to claim 3, characterized in that, Both the working area of ​​the capsule and the small head of the capsule contain a second inner layer of rubber, a single layer of cord, and a second outer layer of rubber.

5. The air spring bladder with a composite cord structure featuring a vulcanized support ring according to claim 4, characterized in that, The first inner layer rubber and the second inner layer rubber are the same layer of rubber that together cover the inside of the capsule skin.

6. The air spring bladder with a composite cord structure and vulcanized support ring according to claim 4, characterized in that, The inner layer cord and the single layer cord are the same cord that runs through the entire sac skin.

7. The air spring bladder with a composite cord structure featuring a vulcanized support ring according to claim 1, characterized in that, The vulcanized bonding surface of the support ring is phosphated and coated with an adhesive layer, while the non-vulcanized bonding surface is sprayed with an electroplated coating.

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