Automobile seat base internal structure and automobile seat

Abstract

The utility model provides an internal structure of an automobile seat base. The internal structure of the automobile seat base comprises a PVC imitation leather layer, a breathable net layer, a foam filling layer, a first hot melt adhesive layer and a second hot melt adhesive layer. The breathable net layer is arranged between the PVC imitation leather layer and the filling foam layer and is bonded through the first hot melt adhesive layer and the second hot melt adhesive layer. Due to the fact that one end of the breathable net layer is tightly bonded with the PVC imitation leather layer through the first hot melt adhesive layer, and the other end of the breathable net layer is firmly connected with the filling foam layer through the second hot melt adhesive layer, the seat base can keep tight combination of all layers of materials in daily use. Therefore, the peel strength and the service life of the internal structure of the automobile seat base are improved, and more comfortable and reliable riding experience is provided for passengers.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile seat, especially to an automobile seat base internal structure and automobile seat. BACKGROUND

[0002] In the design and manufacture of automobile seats, the design and material selection of the internal structure are the key to ensuring the performance, comfort, and long-term safety of the seat. The seat is composed of multiple layers of materials, including fabric layers, foam filling layers, support frames, and adhesive layers. These materials are tightly combined through processes such as adhesion, sewing, and hot pressing, forming a stable and flexible whole. Each layer of material has its own function, and together they provide the necessary comfort, support, and durability.

[0003] However, the seat faces multiple challenges during use. Passenger weight, dynamic driving forces, and environmental factors such as temperature and humidity can all affect the stability of the seat's internal structure. In particular, peel strength, which is the ability of the seat's internal components to resist interlayer separation or material shedding under external forces, is an important indicator of the seat's durability. The existing technology causes some automobile seats to gradually reduce in peel strength after long-term use, leading to problems such as fabric shedding, foam deformation, or frame loosening, which seriously affect the comfort and safety of the seat. SUMMARY

[0004] The purpose of the present disclosure is to overcome the shortcomings of the prior art and provide an automobile seat base internal structure with high peel strength.

[0005] The purpose of the utility model is achieved through the following technical solutions:

[0006] An automobile seat base internal structure includes a PVC imitation leather layer, a breathable mesh layer, a foam filling layer, a first hot melt adhesive layer, and a second hot melt adhesive layer. The first hot melt adhesive layer is bonded to the PVC imitation leather layer on the side facing away from the breathable mesh layer. The first hot melt adhesive layer is bonded to the breathable mesh layer on the side facing away from the PVC imitation leather layer. The second hot melt adhesive layer is bonded to the breathable mesh layer on the side facing away from the foam filling layer. The second hot melt adhesive layer is bonded to the foam filling layer on the side facing away from the breathable mesh layer. The breathable mesh layer is located between the PVC imitation leather layer and the foam filling layer.

[0007] In one embodiment, the thickness of the PVC imitation leather layer is not less than the thickness of the breathable mesh layer.

[0008] In one embodiment, the thickness of the foam filling layer is not less than the thickness of the PVC imitation leather layer.

[0009] In one of the embodiments, the PVC artificial leather layer has a thickness ranging from 0.9mm to 1.1mm.

[0010] In one of the embodiments, the air-permeable mesh layer has a thickness ranging from 0.7mm to 0.9mm.

[0011] In one of the embodiments, the filled foam layer has a thickness ranging from 7mm to 9mm.

[0012] In one of the embodiments, at least one of the first hot melt adhesive layer and the second hot melt adhesive layer is water-drop-shaped hot melt adhesive.

[0013] In one of the embodiments, the contact surfaces of the PVC artificial leather layer and the air-permeable mesh layer both overlap with the bonding surface of the first hot melt adhesive layer.

[0014] In one of the embodiments, the contact surfaces of the filled foam layer and the air-permeable mesh layer both overlap with the bonding surface of the second hot melt adhesive layer.

[0015] A car seat comprising the car seat base internal structure of any one of the above.

[0016] Compared with the prior art, the car seat base internal structure has at least the following advantages:

[0017] 1. The car seat base internal structure is bonded by the first hot melt adhesive layer and the second hot melt adhesive layer, so that the PVC artificial leather layer, the air-permeable mesh layer and the filled foam layer are tightly and firmly combined, the adhesion between the layers is continuously maintained, and a whole structure is formed, thereby improving the peeling strength of the car seat base internal structure, preventing the car seat base internal structure from being dislocated or falling off, and prolonging the service life of the car seat. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present disclosure, and therefore should not be regarded as a limitation on the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0019] Figure 1 FIG. 1 is a structural schematic diagram of a car seat base internal structure according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0020] To facilitate understanding of this disclosure, a more complete description will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the present disclosure. However, this disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure.

[0021] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0023] To better understand the technical solutions and beneficial effects of this disclosure, the following detailed description is provided in conjunction with specific embodiments:

[0024] like Figure 1 As shown, the internal structure 10 of the car seat base of an embodiment of the present invention includes a PVC imitation leather layer 100, a breathable mesh layer 200, a filling foam layer 300, a first hot melt adhesive layer 400, and a second hot melt adhesive layer 500. The side of the first hot melt adhesive layer 400 facing away from the breathable mesh layer 200 is bonded to the PVC imitation leather layer 100, and the side of the first hot melt adhesive layer 400 facing away from the PVC imitation leather layer 100 is bonded to one end face of the breathable mesh layer 200. The side of the second hot melt adhesive layer 500 facing away from the filling foam layer 300 is bonded to the other end face of the breathable mesh layer 200, and the side of the second hot melt adhesive layer 500 facing away from the breathable mesh layer 200 is bonded to the filling foam layer 300. The breathable mesh layer 200 is located between the PVC imitation leather layer 100 and the filling foam layer 300.

[0025] In the embodiment, the first hot melt adhesive layer 400 is evenly applied to the air-permeable mesh layer 200, so that the first hot melt adhesive layer 400 and the air-permeable mesh layer 200 form a stable initial adhesive layer to ensure the firm connection between the air-permeable mesh layer 200 and the PVC artificial leather layer 100. Then, the second hot melt adhesive layer 500 is evenly applied to the filled foam layer 300, so that the second hot melt adhesive layer 500 and the filled foam layer 300 form a stable initial adhesive layer to ensure the firm connection between the air-permeable mesh layer 200 and the filled foam layer 300. In the process of bonding the air-permeable mesh layer 200 and the PVC artificial leather layer 100, the end surface of the air-permeable mesh layer 200 needs to be accurately aligned and bonded with the end surface of the PVC artificial leather layer 100, and at the same time, the high-temperature melting characteristics of the first hot melt adhesive layer 400 are utilized to achieve the bonding connection between the air-permeable mesh layer 200 and the PVC artificial leather layer 100 in a high-temperature environment of 90 degrees Celsius (90℃). Then, in the process of bonding the air-permeable mesh layer 200 and the filled foam layer 300, the other end surface of the air-permeable mesh layer 200 needs to be accurately aligned and bonded with the end surface of the filled foam layer 300, and at the same time, the high-temperature melting characteristics of the second hot melt adhesive layer 500 are utilized to achieve the bonding connection between the air-permeable mesh layer 200 and the filled foam layer 300 in a high-temperature environment of 110 degrees Celsius (110℃), so as to make the PVC artificial leather layer 100, the air-permeable mesh layer 200 and the filled foam layer 300 bonded with each other to form the automobile seat base internal structure 10.

[0026] The automobile seat base internal structure 10 described above is bonded by the first hot melt adhesive layer 400 and the second hot melt adhesive layer 500, which realizes the close and firm combination between the PVC artificial leather layer 100, the air-permeable mesh layer 200 and the filled foam layer 300, thereby ensuring that the layers of materials can continuously maintain bonding and form an integral structure, improving the peeling strength of the automobile seat base internal structure 10 to prevent the automobile seat base internal structure 10 from being misaligned or falling off, and thereby prolonging the service life of the automobile seat.

[0027] As Figure 1As shown, in one of the embodiments, the thickness of the PVC leather layer 100 is not less than the thickness of the breathable mesh layer 200. In this embodiment, the thickness of the PVC leather layer 100 affects the comfort and support of the car seat. A thicker PVC leather layer 100 can better disperse and relieve pressure when subjected to pressure, providing a more comfortable riding experience for passengers. At the same time, its combination with the breathable mesh layer 200 and the filled foam layer 300 forms a car seat base internal structure 10 with good support, which can maintain the comfort of passengers even in the case of long-time riding. In addition, since the PVC leather layer 100 serves as the outer layer material, the increase in its thickness enables the entire seat base internal structure to resist the peeling force more effectively when subjected to external force, thereby maintaining the close combination between the layers of materials and further prolonging the service life of the seat.

[0028] As shown, Figure 1 in one of the embodiments, the thickness of the filled foam layer 300 is not less than the thickness of the PVC leather layer 100. In this embodiment, during the preparation of the car seat base internal structure 10, the filled foam layer 300 serves as the main support and cushioning part of the seat, and its thickness will also affect the comfort and support of the car seat. A thicker filled foam layer 300 can better absorb and disperse the pressure generated when passengers sit down, providing a softer and more conformable riding experience for passengers. At the same time, since the filled foam layer 300 is tightly bonded with the breathable mesh layer 200 and the PVC leather layer 100 through the hot melt adhesive layer, the overall stability and durability of the seat structure are ensured. Secondly, the increase in the thickness of the filled foam layer 300 also enhances the sound insulation and shock absorption effect of the seat, effectively isolating the noise and vibration from the vehicle floor and road surface, thereby improving the comfort of the car seat.

[0029] As shown, Figure 1 in one of the embodiments, the thickness of the PVC leather layer 100 ranges from 0.9mm to 1.1mm. In this embodiment, during the preparation of the car seat, the PVC leather layer 100 serves as the main covering material for the surface of the seat, and the precise control of its thickness is crucial to ensure the overall quality and appearance of the seat. When the thickness of the PVC leather layer 100 ranges from 0.9mm to 1.1mm, the PVC leather layer 100 has sufficient strength and wear resistance to meet the requirements of scratch resistance and wear resistance in daily use of the car seat, avoiding the problem of increasing the overall weight and cost of the seat due to excessive thickness. Secondly, the PVC leather layer 100 within this thickness range can better bond with the breathable mesh layer 200 and the filled foam layer 300 during the bonding process, thereby avoiding the problem of reduced peeling strength due to improper thickness.

[0030] As shown, Figure 1As shown, in one of the embodiments, the thickness of the air permeable mesh layer 200 ranges between 0.7mm-0.9mm. In this embodiment, when manufacturing the interior structure 10 of the car seat base, the air permeable mesh layer 200 serves as a key component connecting the PVC leather layer 100 and the filled foam layer 300, and the accurate control of its thickness is crucial. The thickness range of 0.7mm to 0.9mm ensures that the air permeable mesh layer 200 has sufficient strength to support the structure of each layer and maintains good air permeability of the car seat during long-term use. In addition, when bonding with the PVC leather layer 100 and the filled foam layer 300, the moderate thickness allows the air permeable mesh layer 200 to be more evenly coated with the hot melt adhesive layer, ensuring sufficient contact and firm bonding of the bonding surface. At the same time, in a high-temperature environment of 90 degrees Celsius and 110 degrees Celsius, the air permeable mesh layer 200 can stably withstand the high-temperature melting process of the hot melt adhesive without deformation or damage, thereby ensuring the stability and reliability of the quality of the interior structure 10 of the car seat base.

[0031] As shown, in one of the embodiments, the thickness of the air permeable mesh layer 200 ranges between 0.7mm-0.9mm. In this embodiment, when manufacturing the interior structure 10 of the car seat base, the air permeable mesh layer 200 serves as a key component connecting the PVC leather layer 100 and the filled foam layer 300, and the accurate control of its thickness is crucial. The thickness range of 0.7mm to 0.9mm ensures that the air permeable mesh layer 200 has sufficient strength to support the structure of each layer and maintains good air permeability of the car seat during long-term use. In addition, when bonding with the PVC leather layer 100 and the filled foam layer 300, the moderate thickness allows the air permeable mesh layer 200 to be more evenly coated with the hot melt adhesive layer, ensuring sufficient contact and firm bonding of the bonding surface. At the same time, in a high-temperature environment of 90 degrees Celsius and 110 degrees Celsius, the air permeable mesh layer 200 can stably withstand the high-temperature melting process of the hot melt adhesive without deformation or damage, thereby ensuring the stability and reliability of the quality of the interior structure 10 of the car seat base. Figure 1 As shown, in one of the embodiments, the thickness of the filled foam layer 300 ranges between 7mm-9mm. In this embodiment, when manufacturing the interior structure 10 of the car seat base, the filled foam layer 300 serves as a key component providing the main elasticity and support of the seat, and the accurate control of its thickness will affect the comfort of the car seat. The thickness of the filled foam layer 300 ranges between 7mm to 9mm, which allows the filled foam layer 300 to have sufficient thickness to absorb and disperse the pressure generated when the passenger sits down, providing a soft and comfortable riding experience for the passenger, while avoiding the increase of the overall weight and volume of the seat due to excessive thickness, making the seat more lightweight and easy to install. Secondly, when bonding with the air permeable mesh layer 200 and the PVC leather layer 100, the filled foam layer 300 with moderate thickness allows it to be more evenly heated and melt the hot melt adhesive layer, thereby achieving a more firm and uniform bonding effect. This not only helps to improve the overall stability of the interior structure of the seat base, but also effectively prevents the peeling or loosening of the layers of materials during use, thereby prolonging the service life of the car seat.

[0032] As shown, in one of the embodiments, the thickness of the air permeable mesh layer 200 ranges between 0.7mm-0.9mm. In this embodiment, when manufacturing the interior structure 10 of the car seat base, the air permeable mesh layer 200 serves as a key component connecting the PVC leather layer 100 and the filled foam layer 300, and the accurate control of its thickness is crucial. The thickness range of 0.7mm to 0.9mm ensures that the air permeable mesh layer 200 has sufficient strength to support the structure of each layer and maintains good air permeability of the car seat during long-term use. In addition, when bonding with the PVC leather layer 100 and the filled foam layer 300, the moderate thickness allows the air permeable mesh layer 200 to be more evenly coated with the hot melt adhesive layer, ensuring sufficient contact and firm bonding of the bonding surface. At the same time, in a high-temperature environment of 90 degrees Celsius and 110 degrees Celsius, the air permeable mesh layer 200 can stably withstand the high-temperature melting process of the hot melt adhesive without deformation or damage, thereby ensuring the stability and reliability of the quality of the interior structure 10 of the car seat base. Figure 1As shown, in one embodiment, at least one of the first hot melt adhesive layer 400 and the second hot melt adhesive layer 500 is a teardrop-shaped hot melt adhesive. In this embodiment, when the teardrop-shaped hot melt adhesive is evenly applied to the breathable mesh layer 200, it can penetrate deeper into the tiny pores of the material, forming a stronger adhesive layer. Compared to traditional hot melt adhesives, the teardrop-shaped hot melt adhesive can significantly improve the bonding strength and peel strength between the layers. Specifically, when the teardrop-shaped hot melt adhesive melts at a high temperature of 90 degrees Celsius, its unique shape allows the hot melt adhesive to be more evenly distributed and penetrate into the breathable mesh layer 200, bonding with the PVC imitation leather layer 100, so that a tight bond is formed between the breathable mesh layer 200 and the PVC imitation leather layer 100, while reducing gaps and air bubbles during the bonding process, thereby improving the stability and durability of the internal structure 10 of the car seat base.

[0033] like Figure 1 As shown, in one embodiment, the contact surfaces of the PVC imitation leather layer 100 and the breathable mesh layer 200 overlap with the bonding surface of the first hot melt adhesive layer 400. In this embodiment, because the contact areas of the PVC imitation leather layer 100 and the breathable mesh layer 200 overlap with the bonding areas of the first hot melt adhesive layer 400, the adhesion between the two is ensured to be stronger and more uniform. During the bonding process, the first hot melt adhesive can fully penetrate into the pores of the breathable mesh layer 200, forming a tight adhesive structure with the PVC imitation leather layer 100, thereby effectively preventing the PVC imitation leather layer 100 from peeling and loosening from the breathable mesh layer 200, thus improving the overall stability of the internal structure 10 of the car seat base and extending the service life of the car seat.

[0034] like Figure 1 As shown, in one embodiment, the contact surfaces of the filling foam layer 300 and the breathable mesh layer 200 overlap with the bonding surface of the second hot melt adhesive layer 500. In this embodiment, since the contact areas of the second hot melt adhesive layer 500 with the filling foam layer 300 and the breathable mesh layer 200 completely overlap, when the other end face of the breathable mesh layer 200 is aligned with and pressed against the filling foam layer 300, the hot melt adhesive can fully contact the fiber structure of the breathable mesh layer 200, forming a stronger adhesive force. Furthermore, the overlapping bonding areas ensure a stronger and more uniform bond between the breathable mesh layer 200 and the filling foam layer 300, avoiding peeling or loosening due to insufficient bonding area. Secondly, because the hot melt adhesive can fully penetrate into the pores of the material, a denser adhesive layer is formed, thereby improving the overall stability and durability of the internal structure 10 of the car seat base.

[0035] The automobile seat comprises the automobile seat base internal structure 10 of any one of the above. In the embodiment, the first hot melt adhesive layer 400 is evenly applied to the air permeable mesh layer 200, so that the first hot melt adhesive layer 400 and the air permeable mesh layer 200 form a stable initial adhesive layer, to ensure the firm connection between the air permeable mesh layer 200 and the PVC artificial leather layer 100. Then, the second hot melt adhesive layer 500 is evenly applied to the filled foam layer 300, so that the second hot melt adhesive layer 500 and the filled foam layer 300 form a stable initial adhesive layer, to ensure the firm connection between the air permeable mesh layer 200 and the filled foam layer 300. In the bonding process of the air permeable mesh layer 200 and the PVC artificial leather layer 100, the one end surface of the air permeable mesh layer 200 needs to be accurately aligned and bonded with the one end surface of the PVC artificial leather layer 100, and meanwhile, the high-temperature melting characteristics of the first hot melt adhesive layer 400 are utilized to realize the bonding connection between the air permeable mesh layer 200 and the PVC artificial leather layer 100 in a high-temperature environment of 90 degrees Celsius (90℃). Then, in the bonding process of the air permeable mesh layer 200 and the filled foam layer 300, the other end surface of the air permeable mesh layer 200 needs to be accurately aligned and bonded with the one end surface of the filled foam layer 300, and meanwhile, the high-temperature melting characteristics of the second hot melt adhesive layer 500 are utilized to realize the bonding connection between the air permeable mesh layer 200 and the filled foam layer 300 in a high-temperature environment of 110 degrees Celsius (110℃), so that the PVC artificial leather layer 100, the air permeable mesh layer 200 and the filled foam layer 300 are bonded with each other to form the automobile seat base internal structure 10.

[0036] Compared with the prior art, the automobile seat base internal structure 10 has at least the following advantages:

[0037] 1. The automobile seat base internal structure 10 is bonded by the first hot melt adhesive layer 400 and the second hot melt adhesive layer 500, so that the PVC artificial leather layer 100, the air permeable mesh layer 200 and the filled foam layer 300 are tightly and firmly combined, thereby ensuring that the layers of materials can continuously maintain bonding and form an integral structure, improving the peeling strength of the automobile seat base internal structure 10, preventing the automobile seat base internal structure 10 from being dislocated or falling off, and prolonging the service life of the automobile seat.

[0038] The above-described embodiments only express several implementation manners of the present disclosure, and the description is relatively specific and detailed, but it should not be understood as a limitation on the scope of the disclosed patent. It should be noted that, for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present disclosure, and these all belong to the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure patent should be subject to the appended claims.

Claims

1. An automobile seat base inner structure characterized by comprising: The PVC artificial leather layer, the breathable mesh layer, the filling foam layer, the first hot melt adhesive layer and the second hot melt adhesive layer are provided, one side of the first hot melt adhesive layer away from the PVC artificial leather layer is bonded to the PVC artificial leather layer, one side of the first hot melt adhesive layer away from the PVC artificial leather layer is bonded to one end surface of the breathable mesh layer, one side of the second hot melt adhesive layer away from the filling foam layer is bonded to the other end surface of the breathable mesh layer, one side of the second hot melt adhesive layer away from the breathable mesh layer is bonded to the filling foam layer, and the breathable mesh layer is located between the PVC artificial leather layer and the filling foam layer.

2. The automobile seat base inner structure according to claim 1, characterized by The thickness of the PVC artificial leather layer is not less than the thickness of the breathable mesh layer.

3. The automobile seat base inner structure according to claim 2, characterized by The thickness of the filling foam layer is not less than the thickness of the PVC artificial leather layer.

4. The automobile seat base inner structure according to claim 2, characterized by The thickness of the PVC artificial leather layer ranges from 0.9mm to 1.1mm.

5. The automobile seat base inner structure according to claim 2, characterized by The thickness of the breathable mesh layer ranges from 0.7mm to 0.9mm.

6. The automobile seat base inner structure according to claim 3, characterized by The thickness of the filling foam layer ranges from 7mm to 9mm.

7. The automobile seat base inner structure according to claim 1, characterized by At least one of the first hot melt adhesive layer and the second hot melt adhesive layer is water drop-shaped hot melt adhesive.

8. The automobile seat base inner structure according to claim 1, characterized by The contact surfaces of the PVC artificial leather layer and the breathable mesh layer are mutually overlapped with the bonding surfaces of the first hot melt adhesive layer.

9. The automobile seat base inner structure according to claim 1, characterized by The contact surfaces of the filling foam layer and the breathable mesh layer are mutually overlapped with the bonding surfaces of the second hot melt adhesive layer.

10. An automobile seat characterized by comprising: The automobile seat base internal structure comprises the automobile seat base internal structure according to any one of claims 1 to 9. The automobile seat base internal structure comprises the automobile seat base internal structure according to any one of claims 1 to 9.

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