Double-layer rubber connection soft air duct structure

Abstract

The utility model relates to the technical field of rail transit air duct design, in particular to a double-layer rubber connection soft air duct structure. Comprising an inner-layer air duct and an outer-layer air duct, supporting steel wires are arranged on the inner sides of the inner-layer air duct and the outer-layer air duct; a cavity is formed between the inner-layer air duct and the outer-layer air duct, and the end of the inner-layer air duct and the end of the outer-layer air duct are overlapped and fixed through rivets, so that the effects that the reliability and the heat preservation performance of the connecting air duct between vehicles are improved, and the service life of a product is prolonged are achieved.

Description

Technical Field

[0001] This utility model relates to the technical field of air duct design for rail transit, and in particular to a double-layer rubber-connected flexible air duct structure. Background Technology

[0002] In the existing design scheme of independently configuring air conditioning units for each car, each car is equipped with an independent air conditioning unit. Although this avoids the complex air duct connection design between cars and simplifies the system layout, it has obvious limitations and the overall system cost is high because each car needs to be equipped with complete air conditioning equipment.

[0003] In designs where air conditioning units are shared across vehicles, two or three consecutive carriages share a single unit, with hot or cold air being delivered to adjacent carriages without air conditioning units via dedicated connecting ducts. While this reduces the number of air conditioning units and theoretically lowers costs, it introduces new technical challenges: the design complexity of the connecting ducts increases significantly, particularly in ensuring good sealing while also achieving efficient insulation and a long service life. Furthermore, this cross-vehicle duct connection must consider the impact of relative movement and vibration between vehicles on system reliability.

[0004] Both of these traditional approaches face a common challenge in engineering practice: how to optimize the thermal insulation performance and service life of the duct system while ensuring system reliability and sealing, and simultaneously controlling overall costs. Existing duct materials and structures, especially in applications involving cross-vehicle connections, often struggle to meet these requirements at the same time. Utility Model Content

[0005] The purpose of this invention is to provide a double-layer rubber-connected flexible air duct structure to address the deficiencies in existing technologies, thereby increasing the reliability and insulation of the air duct connections between vehicles and extending the product's service life.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: it includes an inner air duct and an outer air duct; both the inner and outer air ducts are provided with supporting steel wires on their inner sides; a cavity is provided between the inner and outer air ducts; and the ends of the inner and outer air ducts overlap and are fixed by rivets.

[0007] Furthermore, a rubber ring is provided above the overlapping ends of the inner and outer air ducts, and the rubber ring has a circular arched structure.

[0008] Furthermore, the rubber ring is fixed by a mounting flange.

[0009] Furthermore, the mounting flange is fixed between the rubber ring and the vertical edge of the inner air duct.

[0010] Furthermore, sealing foam is provided on the outer side of the vertical edge of the inner air duct.

[0011] Furthermore, the sealing foam extends along the outer side of the vertical edge of the inner air duct.

[0012] Furthermore, the inner and outer air ducts have a wavy folded structure inside and outside the cavity.

[0013] By including an inner air duct and an outer air duct; with supporting steel wires on the inner sides of both the inner and outer air ducts; a cavity is provided between the inner and outer air ducts; and the ends of the inner and outer air ducts overlap and are fixed by rivets, the reliability and heat preservation of the air ducts connecting vehicles are increased, and the service life of the product is extended. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the double-layer rubber-connected flexible air duct structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the internal structure of the double-layer rubber-connected flexible air duct structure of this utility model.

[0017] Figure 3 This is an enlarged schematic diagram of the air duct structure of the double-layer rubber-connected flexible air duct structure of this utility model.

[0018] Figure label:

[0019] 1. Inner air duct; 2. Outer air duct; 3. Supporting steel wire; 4. Mounting flange; 5. Rubber ring; 6. Sealing foam. 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 of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] In the description of this utility model, it should be noted that the orientation or positional relationship indicated by terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inner", and "outer" are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] A double-layer rubber-connected flexible air duct structure, such as Figures 1-3 As shown, it includes an inner air duct 1 and an outer air duct 2; both the inner air duct 1 and the outer air duct 2 are provided with supporting steel wires 3 on their inner sides; a cavity is provided between the inner air duct 1 and the outer air duct 2, and the ends of the inner air duct 1 and the outer air duct 2 overlap and are fixed by rivets 7.

[0023] Specifically, by designing a cavity between the inner air duct 1 and the outer air duct 2, the thermal insulation performance of the air duct is effectively improved. Compared with the traditional single-layer air duct, it can better maintain the stability of the vehicle interior temperature and reduce energy loss. Supporting steel wires 3 are set on the inner side of both the inner air duct 1 and the outer air duct 2, so that the cross-section of the connecting air duct maintains its shape and the ventilation area is maintained under any expansion and contraction state. The ends of the inner air duct 1 and the outer air duct 2 overlap and are fixed with rivets 7, making the connection simple, easy and firm, effectively preventing the air duct from loosening or falling off during use, and improving the overall stability and safety. Both the inner air duct 1 and the outer air duct 2 are made of rubber. The double-layer rubber connection soft air duct structure reduces the number of air conditioning units required compared with the traditional single-section vehicle equipped with a separate air conditioning unit, thus making the solution cheaper. It not only improves the thermal insulation performance of the air duct, but also enhances the reliability of the connection and reduces the risk of unstable vehicle interior environment caused by air duct problems.

[0024] As a preferred embodiment of the above, such as Figures 1-3 As shown, a rubber ring 5 is provided above the overlapping ends of the inner air duct 1 and the outer air duct 2. The rubber ring 5 has a circular arch structure.

[0025] Specifically, the rubber ring 5 provides an additional sealing layer above the overlapping ends of the inner air duct 1 and the outer air duct 2. This not only enhances the sealing performance of the air duct ends and effectively prevents air leakage, but also further improves the heat insulation effect of the air duct. The rubber material itself has good elasticity and aging resistance, ensuring the durability of the sealing effect. The arched rubber ring 5 provides a seal while also better adapting to the slight deformation of the air duct ends, maintaining the tightness of the seal. In addition, the arched structure helps to disperse pressure and reduce the impact on the seal caused by changes in internal air duct pressure, thereby extending the service life of the sealing structure.

[0026] As a preferred embodiment of the above, such as Figures 1-3 As shown, the rubber ring 5 is fixed by the mounting flange 4.

[0027] As a preferred embodiment of the above, such as Figures 1-3 As shown, the mounting flange 4 is fixed between the rubber ring 5 and the vertical edge of the inner air duct 1.

[0028] Specifically, the mounting flange 4 provides a stable support and fixing point for the rubber ring 5, ensuring that the rubber ring 5 can fit tightly against the overlapping ends of the inner air duct 1 and the outer air duct 2, thereby enhancing the sealing performance of the air duct. This not only improves the reliability of the seal but also helps prevent the rubber ring 5 from shifting or being damaged due to uneven stress during use. The placement of the mounting flange 4 between the rubber ring 5 and the vertical edge of the inner air duct 1 not only ensures a tight contact between the flange 4 and the rubber ring 5 but also utilizes the vertical edge of the inner air duct 1 to provide additional support for the flange 4, further enhancing the stability of the entire sealing structure. The sealing performance, stability, and durability of the entire air duct structure are significantly improved. This design not only helps reduce air leakage and improve the insulation effect but also reduces the risk of increased energy consumption and maintenance costs due to air duct problems.

[0029] As a preferred embodiment of the above, such as Figures 1-3 As shown, sealing foam 6 is provided on the outer side of the vertical edge of the inner air duct 1.

[0030] As a preferred embodiment of the above, such as Figures 1-3 As shown, the sealing foam 6 extends along the outer side of the vertical edge of the inner air duct 1.

[0031] Specifically, by placing sealing foam 6 on the outer side of the vertical edge of the inner air duct 1, the connection between the air duct and the outside is kept sealed, further enhancing the sealing performance of the air duct, effectively preventing air leakage, and improving the heat insulation effect of the air duct. The softness and elasticity of sealing foam 6 can well adapt to the slight deformation of the air duct end, thereby maintaining the tightness of the seal. Moreover, the long strip structure not only facilitates installation and disassembly, but also helps to maintain the uniformity and stability of the seal when the air duct is subjected to pressure changes.

[0032] As a preferred embodiment of the above, such as Figures 1-3 As shown, the inner air duct 1 and the outer air duct 2 have a wavy folded structure inside and outside the cavity.

[0033] Specifically, the wave-shaped folding structure ensures that the connecting air duct has good expansion and contraction performance, and the inner and outer two-layer design structure avoids the problem of excessive surface area. At the same time, the wave-shaped folding further increases the rigidity of the air duct in cross-section, making the air duct more stable when subjected to internal pressure or external impact, reducing the risk of performance degradation or failure due to deformation or breakage.

[0034] 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 this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A double-layer rubber-connected flexible air duct structure, characterized in that: It includes an inner air duct (1) and an outer air duct (2); Both the inner air duct (1) and the outer air duct (2) are provided with supporting steel wires (3); A cavity is provided between the inner air duct (1) and the outer air duct (2), and the ends of the inner air duct (1) and the outer air duct (2) overlap and are fixed by rivets (7).

2. The double-layer rubber-connected flexible air duct structure according to claim 1, characterized in that, A rubber ring (5) is provided above the overlapping ends of the inner air duct (1) and the outer air duct (2), and the rubber ring (5) has a circular arch structure.

3. The double-layer rubber-connected flexible air duct structure according to claim 2, characterized in that, The rubber ring (5) is fixed by the mounting flange (4).

4. The double-layer rubber-connected flexible air duct structure according to claim 3, characterized in that, The mounting flange (4) is fixed between the rubber ring (5) and the vertical edge of the inner air duct (1).

5. The double-layer rubber-connected flexible air duct structure according to claim 4, characterized in that, The inner air duct (1) is provided with sealing foam (6) on the outer side of its vertical edge.

6. The double-layer rubber-connected flexible air duct structure according to claim 5, characterized in that, The sealing foam (6) extends along the outer side of the vertical edge of the inner air duct (1).

7. The double-layer rubber-connected flexible air duct structure according to claim 1, characterized in that, The inner air duct (1) and the outer air duct (2) have a wavy folded structure inside and outside the cavity.

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