Damping foam

Abstract

The utility model discloses a shock-absorbing foam, which relates to the field of auto spare parts and comprises a foam main body, the foam main body sequentially comprises a sound-absorbing layer, a shock-absorbing layer and a heat-insulating layer from top to bottom, the sound-absorbing layer is provided with a plurality of sound-absorbing components, the sound-absorbing components are uniformly arranged on the surface of the sound-absorbing layer, the shock-absorbing components are arranged in the shock-absorbing layer, and the heat-insulating layer is arranged in the shock-absorbing layer. At least one part of the shock absorption assembly is fixedly connected with the shock absorption layer, the sound absorption layer is specially designed and comprises a sound absorption cavity, a groove and sound absorption holes according to a specific depth proportion, sound can be effectively absorbed, noise transmission is reduced, a quiet environment is provided for the interior of a vehicle, and an hourglass type shock absorption block in the shock absorption layer can better disperse and absorb impact force; the net-shaped tensile strips with the cross-shaped cross sections enhance the tensile strength, prevent foam from being broken and jointly ensure that vibration is effectively absorbed and transmission is reduced in the running process of an automobile, the heat insulation layer can block heat transmission, equipment and personnel in the automobile are protected against the influence of high temperature, and the riding comfort and the equipment stability are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile accessories, and more specifically, to a shock-absorbing foam. Background Art

[0002] Foam is a product with a porous structure. In addition to the excellent properties inherent in the material, it also has excellent sound absorption, shock absorption, rebound, lightweight, waterproof and aging resistance properties, making it widely used in aerospace, automotive electronics and new energy materials.

[0003] However, traditional single-function materials often have limited effects and do not have special structures to enhance their shock absorption and sound insulation effects. In particular, when the foam is compressed and deformed in all directions, the entire piece of foam undergoes a large deformation, which is not conducive to its recovery to its original shape. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a shock-absorbing foam, which achieves the technical purpose of improving the shock-absorbing and sound-absorbing effects of the foam by adopting shock-absorbing components and sound-absorbing components.

[0005] The above technical purpose of the present utility model is achieved through the following technical solutions: the shock-absorbing foam includes a foam body, which includes a sound-absorbing layer, a shock-absorbing layer and a heat-insulating layer from top to bottom. A plurality of sound-absorbing components are provided on the sound-absorbing layer, and the plurality of sound-absorbing components are evenly arranged on the surface of the sound-absorbing layer. A shock-absorbing component is provided in the shock-absorbing layer, and the side end of the shock-absorbing component is fixedly connected to the inner wall of the shock-absorbing layer.

[0006] The utility model is further configured as follows: the shock-absorbing assembly includes a shock-absorbing block and a tensile strip, the tensile strip is mesh-shaped, the tensile strip is sleeved on the middle part of the shock-absorbing block, the longitudinal section of the tensile strip is cross-shaped, and the tensile strip is fixedly connected to the inner wall of the shock-absorbing layer.

[0007] The present invention is further configured as follows: the sound absorbing component includes a sound absorbing cavity and a plurality of grooves, the plurality of grooves are arranged in a circumferential manner and distributed in the sound absorbing cavity, and a plurality of sound absorbing holes are opened in each of the grooves.

[0008] The utility model is further configured as follows: the longitudinal section of the shock absorbing block is hourglass-shaped.

[0009] The present invention is further configured such that the depth of the sound absorbing cavity is one half to two thirds of the thickness of the sound absorbing layer.

[0010] The utility model is further configured as follows: the tensile strip is made of high-strength elastic material.

[0011] The utility model is further configured such that the sound absorbing layer, the shock absorbing layer and the heat insulating layer are bonded and fixed by environmentally friendly glue.

[0012] In summary, the present invention has the following beneficial effects: it integrates sound absorption, shock absorption and heat insulation functions, can effectively meet the requirements of various performances in the automotive field, reduces the use of multiple single-function materials, reduces costs and installation complexity, the special design of the sound-absorbing layer, including sound-absorbing cavities, grooves and sound-absorbing holes, and a specific depth ratio, can effectively absorb sound, reduce noise transmission, and provide a quiet environment in the car, the hourglass-shaped shock-absorbing blocks in the shock-absorbing layer can better disperse and absorb impact force, the meshed and cross-sectional tensile strips enhance the tensile strength and prevent the foam from rupturing, and together ensure the effective absorption and reduction of vibration during driving, the heat insulation layer can block heat transfer, protect the equipment and personnel in the car from high temperature, and improve the riding comfort and stability of the equipment, the layers are bonded and fixed with environmentally friendly glue to ensure a firm connection without causing pollution to the environment, meet modern environmental protection requirements, can be cut and installed according to different needs, and are suitable for various interior spaces and equipment shapes of cars, improving the versatility and practicality of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Fig. 1 It is an overall cross-sectional view of the utility model;

[0014] Fig. 2 This is a schematic diagram of the shock-absorbing layer structure of the utility model;

[0015] Fig. 3 This is a schematic diagram of the sound-absorbing layer structure of the present utility model;

[0016] Fig. 4 This is a schematic structural diagram of the sound-absorbing component of the present utility model.

[0017] In the figure: 1. Foam body; 2. Sound-absorbing layer; 3. Shock-absorbing layer; 4. Heat-insulating layer; 5. Sound-absorbing component; 6. Shock-absorbing component; 7. Shock-absorbing block; 8. Tensile strip; 9. Sound-absorbing cavity; 10. Groove; 11. Sound-absorbing hole. DETAILED DESCRIPTION

[0018] The present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0019] The shock absorbing foam, such as Figs. 1-4 As shown, it includes a foam body 1, which includes a sound absorbing layer 2, a shock absorbing layer 3 and a heat insulating layer 4 from top to bottom.

[0020] like Figs. 1-4As shown, a plurality of sound-absorbing components 5 are evenly arranged on the surface of the sound-absorbing layer 2. The sound-absorbing components 5 include a sound-absorbing cavity 9 and a plurality of grooves 10 arranged circumferentially in the sound-absorbing cavity 9. Each groove 10 has a plurality of sound-absorbing holes 11. The depth of the sound-absorbing cavity 9 is one-half to two-thirds of the thickness of the sound-absorbing layer 2. The entire sound-absorbing cavity 9 is horn-shaped. When sound waves are transmitted into the sound-absorbing cavity 9, the sound waves bounce back and forth in the sound-absorbing cavity 9. At the same time, due to the presence of the grooves 10, the number of sound wave rebounds is increased. The sound-absorbing holes 11 in the grooves 10 further increase the time that the sound waves can stay in the grooves 10, so that the sound waves consume more energy, thereby improving the sound absorption effect. The sound-absorbing layer 2 is made of polyurethane foam material, has good sound absorption performance, can effectively reduce noise, and can meet different sound absorption requirements by adjusting the density and pore structure of the foam. It can resist moisture erosion to a certain extent and is suitable for some relatively humid environments. Compared with some other sound-absorbing materials, polyurethane foam is more economical and affordable. This design can effectively absorb sound and reduce noise transmission.

[0021] like Figs. 1-4 As shown, a shock-absorbing component 6 is provided in the shock-absorbing layer 3, and the shock-absorbing component 6 includes a shock-absorbing block 7 and a tensile strip 8. The cross-section of the shock-absorbing block 7 is hourglass-shaped. The hourglass-shaped shock-absorbing block 7 is wide at the top, wide at the bottom, and narrow in the middle. When subjected to external force, its unique shape can disperse the stress more evenly throughout the entire structure. In contrast, when the corners of the shock-absorbing block 7 of the whole block shape are subjected to force, the corners will bear greater stress, which can easily lead to local damage. For example, when subjected to vibration impact, the hourglass-shaped shock-absorbing block 7 can gradually disperse the impact force along its curved surface, reduce stress concentration points, and thus increase the service life of the shock-absorbing block 7. The tensile strip 8 is mesh-shaped, with a "cross"-shaped cross-section, and is sleeved on the middle part of the shock-absorbing block 7 and connected to the shock-absorbing block 7. The inner wall of layer 3 is fixedly connected, and the shock-absorbing block 7 is made of rubber. When the foam body 1 is under pressure, the shock-absorbing block 7 absorbs the pressure. After the pressure source leaves, the shock-absorbing block 7 slowly releases the pressure. The rubber has good elasticity and can deform when subjected to external force, absorb impact energy, and play a shock-absorbing role. It can also withstand certain friction and wear and has a long service life. The tensile strip 8 is made of high-strength elastic material, which can enhance the tensile strength of the shock-absorbing layer 3. When the foam body 1 is under pressure and deformed in the horizontal direction, in order to prevent the foam from breaking when a large deformation occurs, the tensile strip 8 forming a mesh structure pulls the four sides of the foam body toward the middle, thereby improving the stability of the foam body 1.

[0022] like Figs. 1-4As shown, the thermal insulation layer 4 can effectively block the transfer of heat and play a role in thermal insulation. The thermal insulation layer 4 is made of rock wool. The fiber structure of rock wool gives it an excellent thermal insulation effect. Rock wool is a non-combustible material and can play a certain barrier role in the event of a fire. At the same time, rock wool has good stability and is not easily deformed by environmental factors. It protects the equipment and personnel in the vehicle from high temperatures, improves the riding comfort and the stability of the equipment, and the sound-absorbing layer 2, the shock-absorbing layer 3 and the thermal insulation layer 4 are bonded and fixed with environmentally friendly glue. This connection method can ensure a firm connection between the layers without causing pollution to the environment.

[0023] Working principle: In actual use, this shock-absorbing foam can be cut and installed according to different needs. It can be installed in the car to reduce vibration and noise, and at the same time play a role in heat insulation. When the foam is vibrated, the shock-absorbing blocks 7 and tensile strips 8 in the shock-absorbing layer 3 can effectively absorb and disperse the impact force, reducing the transmission of vibration. At the same time, the sound-absorbing components 5 on the sound-absorbing layer 2 can absorb noise and reduce the intensity of the noise. The heat-insulating layer 4 can block the transfer of heat and protect equipment and personnel from the effects of high temperatures.

[0024] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A shock-absorbing foam, characterized in that: The invention comprises a foam body (1), wherein the foam body (1) comprises a sound absorbing layer (2), a shock absorbing layer (3) and a heat insulating layer (4) in order from top to bottom, wherein a plurality of sound absorbing components (5) are provided on the sound absorbing layer (2), wherein the plurality of sound absorbing components (5) are evenly arranged on the surface of the sound absorbing layer (2), wherein a shock absorbing component (6) is provided in the shock absorbing layer (3), wherein the side end of the shock absorbing component (6) is fixedly connected to the inner wall of the shock absorbing layer (3), and wherein the shock absorbing component (6) comprises a shock absorbing block (7) ) and a tensile strip (8), the tensile strip (8) is in a mesh shape, the tensile strip (8) is sleeved on the middle part of the shock-absorbing block (7), the longitudinal section of the tensile strip (8) is in a "cross" shape, the tensile strip (8) is fixedly connected to the inner wall of the shock-absorbing layer (3), the sound-absorbing component (5) includes a sound-absorbing cavity (9) and a plurality of grooves (10), the plurality of grooves (10) are arranged in a circumferential manner and distributed in the sound-absorbing cavity (9), and each of the grooves (10) is provided with a plurality of sound-absorbing holes (11).

2. The shock-absorbing foam according to claim 1, characterized in that: The longitudinal section of the shock-absorbing block (7) is hourglass-shaped.

3. The shock-absorbing foam according to claim 1, characterized in that: The depth of the sound absorbing cavity (9) is one half to two thirds of the thickness of the sound absorbing layer (2).

4. The shock-absorbing foam according to claim 1, characterized in that: The tensile strip (8) is made of high-strength elastic material.

5. The shock-absorbing foam according to claim 1, characterized in that: The sound-absorbing layer (2), the shock-absorbing layer (3) and the heat-insulating layer (4) are bonded and fixed by environmentally friendly glue.

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