Sound insulation environment-friendly foam cushion for automobile

Abstract

The utility model relates to the technical field of environment-friendly foam cushions, in particular to an environment-friendly foam cushion for sound insulation of an automobile. According to the technical scheme, the rubber-foam-wrapped rubber-plastic composite material comprises rubber-foam-wrapped skins and polyurethane-foam inner cores, the rubber-foam-wrapped skins are distributed on the upper side and the lower side of the polyurethane-foam inner cores, the peripheries of the rubber-foam-wrapped skins extend out of the polyurethane-foam inner cores, the extending parts of the rubber-foam-wrapped skins are mutually bonded and fixed, the polyurethane-foam inner cores are composed of two rubber-foam-wrapped skins which are distributed up and down, and the rubber-foam-wrapped skins and the polyurethane-foam inner cores are mutually bonded and fixed. Adaptive grooves are evenly formed in the sides, close to each other, of the two polyurethane foam inner cores, and supporting rubber balls of the same size are installed between the adaptive grooves. The recyclable rubber foam is used for wrapping the skin to combine the degradable polyurethane foam inner core to form the whole foam pad, after a waste foam pad is replaced, corresponding safety treatment can be carried out, the purpose of environmental protection is achieved, supporting rubber balls are not evenly filled, the anti-pressure capacity in the using process of the foam pad is improved, and the service life of the foam pad is prolonged. And the service life of the foam pad is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of environmentally friendly foam pads, in particular to an environmentally friendly foam pad for sound insulation of automobiles. Background Art

[0002] Foam pads are made of foamed materials, usually with a porous structure, which can provide good cushioning, shock absorption, heat insulation and sound insulation. Foam pads can be made of a variety of different materials, including polyurethane (PU), polyethylene (PE), polyvinyl chloride (PVC), ethylene-vinyl acetate copolymer (EVA), etc.

[0003] Among them, foam pads are also an important part of the automobile production and processing process. They are installed in various parts of the car to play different roles. The main uses of foam pads include sound insulation, shock absorption, sealing, heat insulation and filling. In the engine compartment, foam pads can be used to seal the gap between the engine hood and the body to reduce the transfer of noise and heat. In the car interior, foam pads are used in seats, door panels, ceilings and other parts to provide a comfortable touch and good sound insulation. In the car chassis, foam pads can be used for shock absorption and sound insulation to reduce the transmission of road noise and vibration to the cab.

[0004] In automotive applications, the compression resistance of foam pads is limited, so their service life is relatively short. Some damaged foam ends need to be replaced during vehicle maintenance. If the foam pads are not produced using environmentally friendly or recyclable materials, the discarded foam pads will cause more serious environmental pollution. In order to reduce the environmental damage caused by such discarding, setting up corresponding compression-resistant structures to increase the service life of the foam pads is also of great significance to environmental protection. Utility Model Content

[0005] The utility model aims to solve the problems existing in the background technology and proposes an environmentally friendly foam pad for automobile sound insulation.

[0006] The technical solution of the utility model is: an environmentally friendly foam pad for automobile sound insulation, comprising a rubber foam wrapped skin and a polyurethane foam inner core, the rubber foam wrapped skin is distributed on the upper and lower sides of the polyurethane foam inner core, and the outer periphery extends out of the polyurethane foam inner core, the protruding parts of the rubber foam wrapped skin are bonded and fixed to each other, the polyurethane foam inner core is composed of two pieces distributed up and down, and the two pieces of the polyurethane foam inner core are evenly provided with adaptation grooves on the adjacent sides, and support rubber balls of the same size are installed between the adaptation grooves.

[0007] Preferably, a cavity is provided in the supporting rubber ball, and a metal mesh is fixed to the side wall of the cavity, so as to increase the elasticity of the supporting rubber ball and reduce the influence on the elasticity of the foam pad.

[0008] Preferably, the middle position of the polyurethane foam inner core is a rubber foam body, a hot melt adhesive adhesion layer is provided at the bottom of the rubber foam body, and the surface is covered with release paper.

[0009] Preferably, a waterproof layer, a heat-insulating layer and a flame-retardant layer are sequentially arranged on the upper surface of the rubber foam body from bottom to top.

[0010] Preferably, the waterproof layer, the heat-insulating layer and the flame-retardant layer are fixed up and down by bonding, which can increase the high-temperature resistance of the entire foam pad.

[0011] Preferably, an anti-scratch layer is sprayed on the upper surface of the flame retardant layer to reduce the possibility of scratches on the surface during installation, which may lead to leakage of the polyurethane foam core.

[0012] Compared with the prior art, the utility model has the following beneficial technical effects: the entire foam pad is formed by wrapping the surface with recyclable rubber foam and combining the degradable polyurethane foam core; after the waste foam pad is replaced, corresponding safety treatment can be carried out to achieve the purpose of environmental protection; the supporting rubber balls are evenly filled, thereby increasing the pressure resistance during use and extending the service life of the foam pad. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall assembly cross-sectional structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the front cutaway structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the overall appearance structure of the utility model;

[0016] Figure 4 It is a schematic diagram of the cross-sectional structure of the rubber foam wrapped skin of the utility model.

[0017] Figure numerals: 1. rubber foam wrapped skin; 11. rubber foam body; 12. hot melt adhesive adhesion layer; 13. anti-scratch layer; 14. flame retardant layer; 15. heat insulation layer; 16. waterproof layer; 2. polyurethane foam core; 21. adapter groove; 3. support rubber ball; 31. cavity. DETAILED DESCRIPTION

[0018] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0019] Example

[0020] like Figure 1-4As shown, the utility model proposes an environmentally friendly foam pad for automobile sound insulation, including a rubber foam wrapped skin 1 and a polyurethane foam core 2, the rubber foam wrapped skin 1 is distributed on the upper and lower sides of the polyurethane foam core 2, and the outer periphery extends out of the polyurethane foam core 2, the protruding parts of the rubber foam wrapped skin 1 are bonded and fixed to each other, the polyurethane foam core 2 is composed of two pieces distributed up and down, and the two polyurethane foam cores 2 are evenly provided with adaptation grooves 21 on the side close to each other, and supporting rubber balls 3 of the same size are installed between the adapting grooves 21, a cavity 31 is provided in the supporting rubber ball 3, and a metal wire mesh is fixed to the side wall of the cavity 31.

[0021] The middle position of the polyurethane foam core 2 is a rubber foam body 11, a hot melt adhesive layer 12 is arranged at the bottom of the rubber foam body 11, and the surface is covered with release paper, and a waterproof layer 16, a heat insulating layer 15 and a flame retardant layer 14 are arranged on the upper surface of the rubber foam body 11 from bottom to top, and the waterproof layer 16, the heat insulating layer 15 and the flame retardant layer 14 are fixed up and down by bonding, and a scratch-resistant layer 13 is sprayed on the upper surface of the flame retardant layer 14.

[0022] In this embodiment, first, the hot melt adhesive attachment layer 12 of the lower rubber foam wrapped skin 1 is facing upward, and the bottom of the lower polyurethane foam core 2 is adhered to its center position, and then the supporting rubber balls 3 are sequentially placed in the adapting grooves 21 of the polyurethane foam core 2, and then the upper polyurethane foam core 2 is covered, and finally the upper rubber foam wrapped skin 1 is covered, and the edges and corners of the rubber foam wrapped skin 1 extending out of the polyurethane foam core 2 are adhered, so that the polyurethane foam core 2 can be wrapped between the rubber foam wrapped skins 1 to form an overall environmentally friendly foam pad. During use, the supporting rubber balls 3 can be used to increase The supporting capacity of the foam pad is improved without having a significant impact on its deformation, thereby extending the service life of the foam pad and reducing the replacement frequency. At the same time, the waterproof layer 16 can be used to prevent water stains from entering the polyurethane foam core 2 and causing corrosion. The flame retardant layer 14 and the heat insulation layer 15 can be used to improve the high temperature resistance of the foam pad and improve its safety of use. Even when replacing it, the rubber foam wrapping skin 1 can be torn off from the polyurethane foam core 2 for recycling. Moreover, since the polyurethane foam core 2 is mainly a bio-based material made from natural plant resources such as corn starch, it is degradable, which reduces environmental impact and achieves the purpose of environmental protection.

[0023] The above-mentioned specific embodiments are only several preferred embodiments of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.

Claims

1. An environmentally friendly foam pad for automobile sound insulation, comprising a rubber foam wrapped skin (1) and a polyurethane foam inner core (2), characterized in that: The rubber foam wrapped skin (1) is distributed on both sides of the polyurethane foam inner core (2) and extends out of the polyurethane foam inner core (2). The extended parts of the rubber foam wrapped skin (1) are bonded and fixed to each other. The polyurethane foam inner core (2) is composed of two pieces distributed up and down. Adaptation grooves (21) are evenly opened on the side where the two pieces of the polyurethane foam inner core (2) are close to each other. Support rubber balls (3) of the same size are installed between the adaptation grooves (21).

2. The environmentally friendly foam pad for automobile sound insulation according to claim 1, characterized in that: A cavity (31) is provided in the supporting rubber ball (3), and a metal wire mesh is fixed to the side wall of the cavity (31).

3. The environmentally friendly foam pad for automobile sound insulation according to claim 1, characterized in that: The middle position of the polyurethane foam inner core (2) is a rubber foam body (11), a hot melt adhesive layer (12) is arranged at the bottom of the rubber foam body (11), and the surface is covered by release paper.

4. The environmentally friendly foam pad for automobile sound insulation according to claim 3, characterized in that: The upper surface of the rubber foam body (11) is provided with a waterproof layer (16), a heat insulation layer (15) and a flame retardant layer (14) in sequence from bottom to top.

5. The environmentally friendly foam pad for automobile sound insulation according to claim 4, characterized in that: The waterproof layer (16), the heat insulating layer (15) and the flame retardant layer (14) are fixed up and down by bonding.

6. The environmentally friendly foam pad for automobile sound insulation according to claim 4, characterized in that: The upper surface of the flame retardant layer (14) is sprayed with an anti-scratch layer (13).

Images