Environment-friendly ultralight automobile front wall inner sound insulation pad

Abstract

The utility model relates to the technical field of sound insulation pads for automobiles, and discloses an environment-friendly ultra-light sound insulation pad in an automobile front wall, which comprises a sound-absorbing fireproof layer, a sound insulation pad and a heat insulation layer which are fixedly connected in sequence, wherein the sound-absorbing fireproof layer, the sound-insulating pad and the heat-insulating layer are respectively arranged inside an instrument desk of the automobile, the sound-absorbing fireproof layer is used for absorbing internal sound of an engine compartment, the sound-insulating pad is used for insulating the internal sound of the engine compartment, and the heat-insulating layer is used for insulating internal heat of the engine compartment. By means of the functions of sound absorption, sound insulation and heat insulation, the comfort of a cab is effectively improved, interference of external noise and heat is reduced, and meanwhile the energy efficiency and the environment-friendly performance of an automobile are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile sound insulation pads, in particular to an environmentally friendly and ultra-light automobile front wall inner sound insulation pad. Background Art

[0002] The noise generated by the car engine is one of the common problems in the car riding experience. This noise is often transmitted to the passenger compartment through the sheet metal and mounting holes, resulting in an increase in the noise level inside the car, affecting the comfort of the driver and passengers. In order to effectively reduce this noise, the traditional approach is to install a sound insulation pad with sound insulation and sound absorption functions in the instrument panel.

[0003] At present, common sound insulation pad materials include EVA+PUR polyurethane foam and hard cotton + soft cotton. EVA+PUR polyurethane foam is a material combination with excellent sound insulation and sound absorption effects. It can effectively absorb and isolate engine noise, improve the quietness of the car, and improve the riding experience. However, this material contains high levels of harmful volatiles, such as formaldehyde, toluene and xylene, which may have a certain impact on the air quality in the car, so there are certain concerns in terms of environmental protection. In contrast, the combination of hard cotton + soft cotton has a lower cost, but the molding effect is poor. This material combination may not reach the level of EVA+PUR in terms of sound insulation and sound absorption, and due to the difficulty of molding, gaps are easily generated, resulting in poor sound insulation.

[0004] In view of this, it is urgent to invent a sound insulation pad for automobiles to solve the problems of existing sound insulation pads releasing harmful volatiles, high molding costs, and poor sound insulation effects. Utility Model Content

[0005] In view of this, the utility model aims at the deficiencies of the prior art and proposes an environmentally friendly and ultra-light sound insulation pad for the front fascia of a car, aiming to solve the problems of the existing sound insulation pad releasing harmful volatiles, having high molding costs and poor sound insulation effect.

[0006] The utility model provides an environmentally friendly ultra-light sound insulation pad for the front wall of a car, comprising: a sound-absorbing and fire-proofing layer, a sound insulation pad and a heat insulation layer, wherein the sound-absorbing and fire-proofing layer, the sound insulation pad and the heat insulation layer are fixedly connected in sequence;

[0007] Among them, the sound-absorbing and fire-proof layer, the sound-insulating pad and the heat-insulating layer are respectively arranged inside the dashboard of the car, the sound-absorbing and fire-proof layer is used to absorb the internal sound of the engine compartment, the sound-insulating pad is used to isolate the internal sound of the engine compartment, and the heat-insulating layer is used to isolate the internal heat of the engine compartment.

[0008] Furthermore, the sound-absorbing and fire-proofing layer is made of PET melt-blown cotton, and the density of the PET melt-blown cotton is 300-600g / m2.

[0009] Furthermore, the sound insulation pad is a PE acoustic membrane, and the density of the PE acoustic membrane is 300g / m2.

[0010] Furthermore, the material of the heat insulation layer is PET cotton board, and the density of the PET cotton board is 1000-1500g / m2.

[0011] Furthermore, a plurality of fixing nails are provided on a side of the sound-absorbing and fire-proofing layer away from the sound insulation pad.

[0012] Furthermore, the fixing nail comprises:

[0013] A fixed shell, one end of which is connected to the side wall of the sound-absorbing and fire-proofing layer on a side away from the sound insulation pad, wherein an expansion space is provided inside the fixed shell;

[0014] An expansion nail is arranged inside the expansion space, and the expansion nail is used to support the inner wall of the expansion space.

[0015] Furthermore, the fixing shell is made of rubber.

[0016] Furthermore, the expansion nail comprises:

[0017] A connecting beam is arranged inside the expansion space, one end of the connecting beam is connected to the inner top wall of the expansion space, and the other end of the connecting beam is connected to the inner bottom wall of the expansion space;

[0018] The support arms are provided in at least six groups, and one end of the six groups of the support arms is respectively provided inside the connection beam along the circumference of the connection beam;

[0019] A top cover is arranged inside the connecting beam, and the top cover is slidably connected to the inner side wall inside the connecting beam;

[0020] A compression spring is arranged inside the connecting beam, one end of the compression spring is connected to the inner bottom surface inside the connecting beam, and the other end of the compression spring is connected to the top cover, so that when the compression spring is extended, one end of the compression spring drives the top cover to move inside the connecting beam along the setting direction of the connecting beam.

[0021] Compared with the prior art, the beneficial effect of the utility model is that it is formed by a tight combination of the sound-absorbing and fire-proof layer, the sound-insulating pad and the heat-insulating layer. Among them, the sound-absorbing and fire-proof layer uses PET melt-blown cotton material, which is intended to absorb the sound generated in the engine compartment, and at the same time has a fire-proof function, effectively reducing the noise level in the car, thereby optimizing the driving experience. The sound-insulating pad uses PE acoustic film, which is mainly used to block the sound transmission inside the engine compartment, further enhancing the quiet effect inside the car. The heat-insulating layer uses PET cotton board material to isolate the heat inside the engine compartment and prevent it from being conducted into the car, effectively improving the temperature comfort inside the car. This design not only meets the needs of noise and heat isolation inside the car, but also pays attention to environmental protection concepts and uses lightweight materials, which is expected to reduce the overall weight of the vehicle and improve fuel efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the structure of an environmentally friendly and ultra-light sound insulation pad for the front wall of a car provided by an embodiment of the utility model;

[0023] Figure 2 A schematic diagram of an environmentally friendly and ultra-light sound insulation pad for the front wall of a car provided by an embodiment of the utility model;

[0024] Figure 3 A schematic structural diagram of a fixing nail provided in an embodiment of the utility model.

[0025] Among them: 100, sound-absorbing and fire-proof layer; 200, sound insulation pad; 300, heat insulation layer; 110, fixing nails; 111, fixing shell; 1121, connecting beam; 1122, supporting arm. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0027] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0028] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0029] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0030] The noise generated by the car engine is one of the common problems in the car riding experience. This noise is often transmitted to the passenger compartment through the sheet metal and mounting holes, resulting in an increase in the noise level inside the car, affecting the comfort of the driver and passengers. In order to effectively reduce this noise, the traditional approach is to install a sound insulation pad with sound insulation and sound absorption functions in the instrument panel.

[0031] At present, common sound insulation pad materials include EVA+PUR polyurethane foam and hard cotton + soft cotton. EVA+PUR polyurethane foam is a material combination with excellent sound insulation and sound absorption effects. It can effectively absorb and isolate engine noise, improve the quietness of the car, and improve the riding experience. However, this material contains high levels of harmful volatiles, such as formaldehyde, toluene and xylene, which may have a certain impact on the air quality in the car, so there are certain concerns in terms of environmental protection. In contrast, the combination of hard cotton + soft cotton has a lower cost, but the molding effect is poor. This material combination may not reach the level of EVA+PUR in terms of sound insulation and sound absorption, and due to the difficulty of molding, gaps are easily generated, resulting in poor sound insulation.

[0032] In view of this, the utility model proposes an environmentally friendly and ultra-light sound insulation pad for the front wall of a car, aiming to solve the problems of the existing sound insulation pad releasing harmful volatiles, having high molding costs and poor sound insulation effect.

[0033] like Figure 1 and Figure 2As shown, the utility model provides an environmentally friendly and ultra-light sound insulation pad 200 for the front enclosure of a car, comprising: a sound-absorbing and fire-proof layer 100, a sound insulation pad 200 and a heat insulation layer 300, and the sound-absorbing and fire-proof layer 100, the sound insulation pad 200 and the heat insulation layer 300 are fixedly connected in sequence; wherein, the sound-absorbing and fire-proof layer 100, the sound insulation pad 200 and the heat insulation layer 300 are respectively arranged inside the dashboard of the car, the sound-absorbing and fire-proof layer 100 is used to absorb the internal sound of the engine compartment, the sound insulation pad 200 is used to isolate the internal sound of the engine compartment, and the heat insulation layer 300 is used to isolate the internal heat of the engine compartment.

[0034] It can be seen that the sound-absorbing and fireproof layer 100 is located inside the car dashboard, and its main function is to absorb the sound generated inside the engine compartment. By effectively absorbing the sound energy, the noise level in the cockpit is reduced. Secondly, the sound insulation pad 200 follows closely, which is used to isolate the propagation of sound inside the engine compartment. By blocking the propagation path of the sound, the transmission of the sound to the inside of the cockpit is reduced. Finally, the heat insulation layer 300 is the outermost layer, which is used to isolate the heat generated inside the engine compartment. By effectively reducing the conduction and radiation of heat, a comfortable temperature in the cockpit is maintained.

[0035] It can be understood that the presence of the sound-absorbing and fireproof layer 100 can effectively absorb the sound energy generated by the engine compartment, which helps to reduce the noise level in the cockpit. By reducing the interference of noise, the driver and passengers can enjoy a quieter driving experience, improving driving comfort and riding comfort. Secondly, the application of the sound insulation pad 200 can block the propagation path of the sound inside the engine compartment. This means that even if noise is generated in the engine compartment, the possibility of propagation to the inside of the cockpit will be reduced under the blocking of the sound insulation pad 200, further reducing the noise level in the cockpit and improving the comfort of the internal environment. Finally, the role of the thermal insulation layer 300 is to effectively isolate the heat generated inside the engine compartment. By reducing the conduction and radiation of heat, the thermal insulation layer 300 helps to maintain a comfortable temperature in the cockpit. This not only improves the comfort of the ride, but also helps to reduce the load of the air-conditioning system, thereby improving the energy efficiency performance of the car.

[0036] In some embodiments of the present invention, the sound-absorbing and fire-proofing layer 100 is made of PET melt-blown cotton, and the density of the PET melt-blown cotton is 300-600 g / m2.

[0037] It is understandable that PET meltblown cotton has excellent sound absorption properties. Its fine fiber structure and high surface area enable it to effectively absorb the sound energy generated inside the engine compartment. The density of PET meltblown cotton is relatively high at 300-600g / m2, which means that it has more fibers and can provide better sound absorption. Therefore, the application of this material helps to reduce the noise level in the cockpit and improve driving comfort and riding comfort. Secondly, PET meltblown cotton also has good fire resistance. As the material of the sound-absorbing and fireproof layer 100, it can effectively prevent the spread of flames when facing high temperatures or flames, thereby improving the safety of the car. This fire resistance provides additional safety for drivers and passengers, and can effectively reduce the risk of fire in emergency situations.

[0038] In some embodiments of the present invention, the sound insulation pad 200 is a PE acoustic membrane, and the density of the PE acoustic membrane is 300g / m2.

[0039] It is understandable that the PE acoustic membrane has good sound insulation performance. Its density of 300g / m2 means that it has a certain thickness and weight, which can effectively block the propagation of sound inside the engine compartment. By arranging the sound insulation pad 200 on the sound propagation path, the PE acoustic membrane can effectively block the noise generated by the engine compartment and reduce the possibility of it being transmitted to the inside of the cockpit, thereby reducing the noise level in the cockpit and improving the comfort of the internal environment. Secondly, the PE acoustic membrane has good durability and stability. As the material of the sound insulation pad 200, it can withstand the vibration and pressure during the operation of the car and is not easily affected by the external environment and deformed or damaged. This durability ensures the long-term effectiveness of the sound insulation pad 200, enabling it to continuously provide good sound insulation and provide a stable driving environment for the driver and passengers.

[0040] In some embodiments of the present invention, the material of the heat insulation layer 300 is a PET cotton board, and the density of the PET cotton board is 10000-1500g / m2.

[0041] It is understandable that the PET cotton board has excellent thermal insulation properties. Its density of 10000-1500g / m2 indicates that it has a high thickness and density, which can effectively isolate the heat conduction and radiation generated inside the engine compartment. By arranging the heat insulation layer 300 in the front of the car, the PET cotton board can effectively reduce the conduction of heat into the cockpit, maintain a comfortable temperature in the cockpit, and improve the comfort of the cockpit. Secondly, the PET cotton board has the characteristics of lightweight. Despite its high density, the PET cotton board is still relatively light and will not add too much weight to the car, which helps to maintain the overall lightweight design of the car. This has a positive impact on the fuel economy and performance of the car, and improves the energy efficiency performance of the car.

[0042] See also Figure 3 As shown, in some embodiments of the present invention, a plurality of fixing nails 110 are arranged on the side of the sound-absorbing and fireproofing layer 100 away from the sound insulation pad 200, and the fixing nails 110 include: a fixing shell 111 and an expansion nail. One end of the fixing shell 111 is connected to the side wall of the side of the sound-absorbing and fireproofing layer 100 away from the sound insulation pad 200, wherein an expansion space is arranged inside the fixing shell 111; the expansion nails are arranged inside the expansion space, and the expansion nails are used to support the inner side wall of the expansion space.

[0043] It is understandable that the fixing nail 110 can effectively fix the sound-absorbing and fireproof layer 100 to prevent it from loosening or falling off during the driving of the car. The car will be subjected to vibration and bumps during driving. If the sound-absorbing and fireproof layer 100 is not effectively fixed, it may cause it to shift or fall off, reducing the sound insulation effect and even posing a safety hazard. The fixing nail 110 firmly fixes the sound-absorbing and fireproof layer 100 in position to ensure that it is always in an effective working state, thereby improving the sound insulation effect and safety. Secondly, the design of the fixing nail 110 is simple and practical, and easy to install and maintain. The fixing nail 110 consists of a fixing shell 111 and an expansion nail. The installation process is relatively simple. It only needs to insert the fixing shell 111 into the hole inside the car dashboard, and then expand the fixing shell 111 through the expansion nail to fix it. This design not only facilitates the production process, but also facilitates daily maintenance and replacement.

[0044] In some embodiments of the present invention, the fixing shell 111 is made of rubber.

[0045] In some embodiments of the utility model, the expansion nail includes: a connecting beam 1121, a support arm 1122, a top cover and a compression spring. The connecting beam 1121 is arranged inside the expansion space, one end of the connecting beam 1121 is connected to the inner top wall of the expansion space, and the other end of the connecting beam 1121 is connected to the inner bottom wall of the expansion space; at least six groups of support arms 1122 are arranged, and one end of the six groups of support arms 1122 is arranged inside the connecting beam 1121 along the circumference of the connecting beam 1121; the top cover is arranged inside the connecting beam 1121, and the top cover is slidably connected to the inner side wall inside the connecting beam 1121; the compression spring is arranged inside the connecting beam 1121, one end of the compression spring is connected to the inner bottom surface inside the connecting beam 1121, and the other end of the compression spring is connected to the top cover, so that when the compression spring is extended, one end of the compression spring drives the top cover to move inside the connecting beam 1121 along the setting direction of the connecting beam 1121.

[0046] It is understandable that the structural design of the connecting beam 1121, the support arm 1122 and the top cover enables the expansion nail to have good bearing capacity and stability. The connecting beam 1121 connects the top wall and the bottom wall of the expansion space, providing a stable support frame. The support arm 1122 is arranged along the circumference of the connecting beam 1121, which enhances the support of the entire structure and can effectively withstand the external pressure and vibration that the sound-absorbing and fireproof layer 100 may be subjected to. The sliding connection design of the top cover ensures the stability of the expansion nail during compression and extension, and can effectively adjust and adapt to different environmental conditions. Secondly, the setting of the compression spring gives the expansion nail a certain elasticity and adaptability. The compression spring connects the bottom surface of the connecting beam 1121 and the top cover. When subjected to external pressure, the compression spring can be telescopically deformed, adjust the opening length and support strength of the expansion nail, and maintain the stability and balance of the sound-absorbing and fireproof layer 100. This design effectively reduces the deformation or damage of the sound-absorbing and fireproof layer 100 due to force, and prolongs its service life.

[0047] In the above-mentioned embodiments, an environmentally friendly and ultra-light sound insulation pad 200 for the front enclosure of a car is formed by a tight combination of the sound-absorbing and fireproof layer 100, the sound insulation pad 200 and the heat insulation layer 300. Among them, the sound-absorbing and fireproof layer 100 uses PET melt-blown cotton material, which is intended to absorb the sound generated in the engine compartment, and at the same time has a fireproof function, effectively reducing the noise level in the car, thereby optimizing the driving experience. The sound insulation pad 200 uses PE acoustic film mainly to block the sound transmission inside the engine compartment, further enhancing the quiet effect inside the car. The heat insulation layer 300 uses PET cotton board material to isolate the heat inside the engine compartment and prevent it from being conducted into the car, effectively improving the temperature comfort inside the car. This design not only meets the needs of noise and heat isolation inside the car, but also pays attention to environmental protection concepts and uses lightweight materials, which is expected to reduce the overall weight of the vehicle and improve fuel efficiency.

[0048] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. An environmentally friendly ultra-light car front wall inner sound insulation pad, characterized in that: include: A sound-absorbing and fire-proofing layer, a sound-insulating pad and a heat-insulating layer, wherein the sound-absorbing and fire-proofing layer, the sound-insulating pad and the heat-insulating layer are fixedly connected in sequence; Among them, the sound-absorbing and fire-proof layer, the sound-insulating pad and the heat-insulating layer are respectively arranged inside the dashboard of the car, the sound-absorbing and fire-proof layer is used to absorb the internal sound of the engine compartment, the sound-insulating pad is used to isolate the internal sound of the engine compartment, and the heat-insulating layer is used to isolate the internal heat of the engine compartment.

2. The environmentally friendly ultra-light automobile front wall inner sound insulation pad as claimed in claim 1, characterized in that: The material of the sound-absorbing and fire-proof layer is PET melt-blown cotton, and the density of the PET melt-blown cotton is 300-600g / m2.

3. The environmentally friendly ultra-light automobile front wall inner sound insulation pad as claimed in claim 2, characterized in that: The sound insulation pad is a PE acoustic membrane, and the density of the PE acoustic membrane is 300g / m2.

4. The environmentally friendly ultra-light automobile front wall inner sound insulation pad as claimed in claim 3, characterized in that: The material of the heat insulation layer is PET cotton board, and the density of the PET cotton board is 1000-1500g / m2.

5. The environmentally friendly ultra-light automobile front wall inner sound insulation pad as claimed in claim 1, characterized in that: A plurality of fixing nails are arranged on a side of the sound-absorbing and fire-proofing layer away from the sound-insulating pad.

6. The environmentally friendly ultra-light automobile front wall inner sound insulation pad as claimed in claim 5, characterized in that: The fixing nail comprises: A fixed shell, one end of which is connected to the side wall of the sound-absorbing and fire-proofing layer on a side away from the sound insulation pad, wherein an expansion space is provided inside the fixed shell; An expansion nail is arranged inside the expansion space, and the expansion nail is used to support the inner wall of the expansion space.

7. The environmentally friendly ultra-light automobile front wall inner sound insulation pad as claimed in claim 6, characterized in that: The material of the fixing shell is rubber.

8. The environmentally friendly ultra-light automobile front wall inner sound insulation pad as claimed in claim 6, characterized in that: The expansion nail comprises: A connecting beam is arranged inside the expansion space, one end of the connecting beam is connected to the inner top wall of the expansion space, and the other end of the connecting beam is connected to the inner bottom wall of the expansion space; The support arms are provided in at least six groups, and one end of the six groups of the support arms is respectively provided inside the connection beam along the circumference of the connection beam; A top cover is arranged inside the connecting beam, and the top cover is slidably connected to the inner side wall inside the connecting beam; A compression spring is arranged inside the connecting beam, one end of the compression spring is connected to the inner bottom surface inside the connecting beam, and the other end of the compression spring is connected to the top cover, so that when the compression spring is extended, one end of the compression spring drives the top cover to move inside the connecting beam along the setting direction of the connecting beam.

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