A luggage wheel cover soundproofing pad of a pet felt composite material

Abstract

The utility model relates to the technical field of wheel cover sound insulation pad, specifically relates to a luggage wheel cover sound insulation pad of PET felt composite material, including wheel cover inner layer, PET felt sound absorption layer, support layer and buffer layer that are sequentially stacked from inside to outside, wheel cover inner layer inner surface annular array is provided with a plurality of antiskid particle, support layer inner annular array is provided with cylindrical block, is used for providing stable support for sound absorbing hole, buffer layer inner annular array is provided with arcuate framework, is used for high -efficient buffering wheel body impact, improves the resilience shock -proof performance of wheel cover, this wheel cover sound insulation pad is through multilayer composite structure and functional design, effectively promoted the sound insulation and buffering performance, solved the problem that traditional sound insulation pad is easy to compact when using and is jammed gas hole, and the poor shock attenuation effect has the advantages such as light weight, high reliability and good durability.

Description

Technical Field

[0001] This utility model relates to the field of wheel cover sound insulation pad technology, specifically to a luggage wheel cover sound insulation pad made of PET felt composite material. Background Technology

[0002] PET felt composite material luggage wheel well sound insulation pads are mainly used in the luggage manufacturing industry. This component is installed on the bottom of the luggage and tightly wraps around the wheel hub. Its core function is to effectively isolate the noise and vibration generated by the wheels rubbing against the ground when rolling. By absorbing and reducing these structurally transmitted and airborne sound, this sound insulation pad can significantly improve the quietness and smoothness of the luggage during dragging, making it a key functional component for improving user experience and enhancing product quality.

[0003] Currently, most wheel arch sound insulation pads in the industry are made from a single material such as EVA foam, recycled felt, or ordinary polyurethane foam through molding. While these materials have certain buffering and sound absorption effects, they generally have performance limitations. For example, EVA material has low density and light weight, but its sound insulation effect in the mid-to-low frequency range is poor; recycled felt is inexpensive but easily absorbs moisture and has poor durability; ordinary foam is prone to permanent deformation after long-term pressure, causing its sound insulation performance to deteriorate over time.

[0004] Existing technologies struggle to balance high-performance sound insulation with lightweight chassis, often increasing material thickness or density to enhance noise reduction, thus compromising portability. Furthermore, most existing felt wheel covers are compressed by the weight of the suitcase during use, causing the internal pores and gaps to disappear, weakening the sound-absorbing effect and failing to meet the long-term quiet operation requirements of suitcases. Summary of the Invention

[0005] To solve the above-mentioned technical problems, this utility model provides a PET felt composite material luggage wheel cover sound insulation pad.

[0006] The technical solution of this utility model is: a PET felt composite material luggage wheel cover sound insulation pad, comprising a wheel cover inner layer, a PET felt sound absorption layer, a support layer and a buffer layer stacked sequentially from the inside to the outside; the inner surface of the wheel cover inner layer is provided with a plurality of anti-slip particles arranged in a ring array; the support layer is provided with a plurality of cylindrical blocks arranged in a ring array; and the buffer layer is provided with a plurality of arched skeletons arranged in a ring array.

[0007] Note: The inner surface of the inner layer of the wheel cover is provided with a ring array of multiple anti-slip particles, which significantly increases the friction between the inner layer of the wheel cover and the surface of the luggage wheel, preventing the wheel from sliding or detaching from the wheel cover during operation, thereby avoiding abnormal noise caused by mechanical friction, and ensuring that the wheel cover always stably wraps around the wheel, improving the reliability of use.

[0008] Furthermore, the inner layer of the wheel cover, the outer surface of the buffer layer, the cylindrical block, and the arched frame are all made of rubber.

[0009] Note: Rubber materials possess high elasticity, wear resistance, and fatigue resistance, enabling them to rapidly recover after repeated deformation. Applying them to critical contact and support areas can enhance the overall structural cushioning performance and durability, while the damping properties of rubber further suppress vibration propagation.

[0010] Furthermore, the PET felt sound-absorbing layer has multiple air holes inside.

[0011] Explanation: The porous structure can effectively increase the friction and reflection path during the propagation of sound waves, converting sound energy into heat energy, thereby significantly improving the absorption efficiency of mid-to-high frequency noise and enhancing the overall sound insulation effect.

[0012] Furthermore, the gaps inside the support layer and buffer layer are filled with PET felt material.

[0013] Explanation: By fully utilizing the lightweight and sound-absorbing properties of PET felt, structural support is provided while avoiding additional weight, achieving a balance between lightweight and high performance, and enhancing the system's sound absorption capability.

[0014] Furthermore, multiple first columnar sound-absorbing cotton are also provided in the internal cavity of the arched frame.

[0015] Note: The sound-absorbing cotton further optimizes the acoustic environment inside the arched frame, especially effectively absorbing low-frequency resonant wheel vibration noise, enhancing the overall acoustic performance balance.

[0016] Furthermore, the cylindrical block has a hollow structure, and multiple second cylindrical sound-absorbing cotton are provided at both ends of the cylindrical block within the hollow structure.

[0017] Explanation: Hollow cylinders have better support and recovery capabilities when subjected to pressure, and are not easily deformed under pressure. The sound-absorbing cotton in the cavity can effectively dissipate energy and absorb noise, forming a highly efficient vibration damping and noise reduction unit.

[0018] Furthermore, the outer surface of the buffer layer is also provided with multiple shock-absorbing airbags.

[0019] Note: The shock-absorbing airbags can absorb and disperse stress by compressing and releasing internal gas when subjected to impact, greatly improving the instantaneous cushioning ability of the wheel covers, protecting the box structure from severe vibration, and reducing the overall noise of the suitcase.

[0020] Furthermore, anti-slip rings are provided at both ends of the inner layer of the wheel cover.

[0021] Note: Anti-slip rings can further enhance the axial fixation of the wheel covers on the wheel axle, preventing them from shifting or falling off when the luggage is moved or subjected to lateral forces, thus improving the overall stability and safety of the structure.

[0022] Compared with the prior art, the beneficial effects of this utility model are: This utility model device achieves excellent comprehensive performance through an innovative multi-layer composite structure design, significantly improving sound insulation and vibration reduction performance while ensuring lightweight and high reliability. The anti-slip particles in the inner layer effectively prevent relative sliding between the wheel and the cover, eliminating friction noise. The PET felt sound-absorbing layer in the middle efficiently absorbs mid-to-high frequency noise through its porous structure. The array of cylindrical blocks in the support layer forms a powerful sound-absorbing chamber. The arched structure has strong deformation resistance and high cavity stability. The cylindrical blocks and the arched frame work together to enhance the shock absorption and noise reduction performance of the wheel, effectively absorbing and dispersing the impact energy during driving, greatly reducing the vibration and noise transmitted from the wheel to the housing. In addition, this structure has strong deformation resistance and excellent durability during long-term use. Unlike traditional wheel covers that only strengthen by thickness, this device solves the industry problem of performance degradation caused by the easy compaction of air pores in traditional wheel cover sound insulation pads when the thickness of the wheel cover is controllable. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this utility model; Figure 2 This is a front longitudinal sectional view of Embodiment 1 of this utility model; Figure 3 This is a cross-sectional view of the buffer layer in Embodiment 1 of this utility model; Figure 4 This is a cross-sectional view of the support layer in Embodiment 1 of this utility model; Figure 5 This is a partially enlarged longitudinal sectional view of the first cylindrical sound-absorbing cotton in Embodiment 3 of this utility model; Figure 6 This is a partially enlarged longitudinal sectional view of the second cylindrical sound-absorbing cotton in Embodiment 4 of this utility model; Figure 7 This is a top view of the wheel cover in Embodiment 5 of this utility model; Figure 8 This is a schematic diagram of the overall structure of Embodiment 5 of this utility model; Among them, 1-inner layer of wheel cover, 11-anti-slip ring, 12-anti-slip particles, 2-PET felt sound-absorbing layer, 3-support layer, 31-cylindrical block, 311-second columnar sound-absorbing cotton, 4-buffer layer, 41-arched skeleton, 411-first columnar sound-absorbing cotton. Detailed Implementation

[0024] The present invention will now be described in more detail with reference to specific embodiments, so as to better demonstrate the advantages of the present invention.

[0025] Example 1: As Figures 1-4 The PET felt composite material luggage wheel cover sound insulation pad shown includes a wheel cover inner layer 1, a PET felt sound-absorbing layer 2, a support layer 3, and a buffer layer 4 stacked sequentially from the inside to the outside; the inner surface of the wheel cover inner layer 1 is provided with a plurality of anti-slip particles 12 arranged in a ring array; the support layer 3 is provided with a plurality of cylindrical blocks 31 arranged in a ring array in the middle gap; and the buffer layer 4 is provided with a plurality of arched skeletons 41 arranged in a ring array in the middle gap. The buffer layer 4 consists of an inner surface, a central gap, and an outer surface; the inner layer 1 of the wheel cover, the outer surface of the buffer layer 4, the cylindrical block 31, and the arched frame 41 are all made of rubber; the inner surface of the buffer layer 4 is made of PET felt, and the PET felt sound-absorbing layer 2 has multiple air holes inside.

[0026] Example 2: The difference between this example and Example 1 is that the gaps inside the support layer 3 and the buffer layer 4 are filled with PET felt material.

[0027] Example 3: This example differs from Example 1 in that, as Figure 5 As shown, a plurality of first columnar sound-absorbing cotton 411 are also provided in the internal cavity of the arched frame 41, and the first columnar sound-absorbing cotton 411 is a commercially available product.

[0028] Example 4: This example differs from Example 3 in that, as... Figure 6 As shown, the cylindrical block 31 has a hollow structure, and multiple second cylindrical sound-absorbing cotton 311 are provided at both ends of the cylindrical block 31 within the hollow structure. The second cylindrical sound-absorbing cotton 311 is a commercially available product.

[0029] Example 5: This example differs from Example 1 in that, as Figure 7 , 8 As shown, anti-slip rings 11 are also provided at both ends of the inner layer 1 of the wheel cover.

[0030] Example 6: The difference between this example and Example 1 is that multiple shock-absorbing airbags are also provided on the outer surface of the buffer layer 4.

Claims

1. A PET felt composite material for luggage wheel well sound insulation pads, characterized in that, It includes a wheel cover inner layer (1), a PET felt sound-absorbing layer (2), a support layer (3) and a buffer layer (4) stacked sequentially from the inside to the outside; the inner surface of the wheel cover inner layer (1) is provided with a ring array of multiple anti-slip particles (12); the inner support layer (3) is provided with a ring array of multiple cylindrical blocks (31); the inner buffer layer (4) is provided with a ring array of multiple arched skeletons (41).

2. The luggage wheel cover sound insulation pad of PET felt composite material as described in claim 1, characterized in that, The inner layer (1) of the wheel cover, the outer surface of the buffer layer (4), the cylindrical block (31) and the arched frame (41) are all made of rubber.

3. The luggage wheel cover sound insulation pad of PET felt composite material as described in claim 1, characterized in that, The PET felt sound-absorbing layer (2) has multiple air holes inside.

4. The PET felt composite material luggage wheel cover sound insulation pad as described in claim 1, characterized in that, The gaps inside the support layer (3) and buffer layer (4) are filled with PET felt material.

5. The luggage wheel cover sound insulation pad of PET felt composite material as described in claim 1, characterized in that, Multiple first columnar sound-absorbing cotton (411) are also provided in the internal cavity of the arched frame (41).

6. The luggage wheel cover sound insulation pad of PET felt composite material as described in claim 1, characterized in that, The cylindrical block (31) has a hollow structure, and multiple second columnar sound-absorbing cotton (311) are provided at both ends of the cylindrical block (31) inside the hollow structure.

7. The luggage wheel cover sound insulation pad of PET felt composite material as described in claim 1, characterized in that, The outer surface of the buffer layer (4) is also provided with multiple shock-absorbing airbags.

8. The luggage wheel cover sound insulation pad of PET felt composite material as described in claim 1, characterized in that, The inner layer (1) of the wheel cover is also provided with anti-slip rings (11) at both ends.

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