A horizontal dual firmness seat foam structure

Abstract

The utility model discloses a horizontal double hardness seat foam structure relates to the technical field of automobile seat, including foaming body, PUR hard foam block, hang tight steel wire, felt, the foaming body adopts soft quality foam integrated foaming forming, the PUR hard foam block sets up the side wing area at the foaming body, is used for improving the support hardness of side wing, the felt sets up the surface layer of foaming body, the hang tight steel wire is buried in the foaming body, is used for providing structure hang tight support. The utility model discloses a horizontal double hardness seat foam structure, replaces traditional double material injection molding through pre -buried PUR hard foam block, fundamentally avoids the problem of soft and hard foam intermixing, and the waste rate and debugging cost are reduced greatly, and the simple and reliable structure is easy to control, is applicable to large -scale production, guarantees lateral support while improving seat riding comfort.

Description

Technical Field

[0001] This utility model relates to the field of automotive seat technology, and in particular to a horizontal dual-hardness seat foam structure. Background Technology

[0002] Currently, most existing dual-hardness foams for seats employ a horizontal dual-hardness design, where the core uses one hardness and the side wings use another. This dual-hardness foaming method separates the hard and soft materials through a skin-tightening groove between the foam core and side wings, or by adding process separation grooves to the mold. However, this process is prone to problems during manufacturing, such as the hard foam in the side wings mixing with the soft foam in the core, or vice versa. This intermingling of hard and soft foams leads to low product yield, complex process adjustments, and high production costs. Therefore, this paper proposes a horizontal dual-hardness seat foam structure to address these issues. Utility Model Content

[0003] To address the aforementioned problems in the prior art, this utility model provides a horizontal dual-hardness seat foam structure, solving the problems of easy mixing of soft and hard foams, low yield rate, and high debugging cost in the existing dual-hardness foaming process.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A horizontal dual-hardness seat foam structure includes a foam body, a PUR rigid foam block, a suspension wire, and a felt. The foam body is integrally foamed from soft foam. The PUR rigid foam block is disposed in the side wing area of ​​the foam body to improve the support rigidity of the side wing. The felt is disposed on the surface layer of the foam body. The suspension wire is embedded in the foam body to provide structural suspension support.

[0006] As a preferred embodiment of this invention, the hardness of the PUR rigid foam block is not less than 14 kPa, and the hardness of the foam body is 6.5–10 kPa.

[0007] As a preferred embodiment of this invention, the distance between the PUR rigid foam block and the side A surface of the foam body is not less than 20mm.

[0008] As a preferred embodiment of this invention, the distance between the PUR rigid foam block and the side wing of the foam body is not less than 10mm.

[0009] As a preferred embodiment of this invention, the PUR rigid foam block is provided with positioning holes.

[0010] As a preferred embodiment of this invention, the positioning hole has a diameter of 7 mm and a depth of not less than 15 mm.

[0011] As a preferred embodiment of this invention, the felt is pre-attached to the upper mold or core mold during the foaming process.

[0012] As a preferred embodiment of this invention, the lifting steel wire is fixedly mounted on the lower mold.

[0013] By adopting the above technical solution, the beneficial effects of this utility model compared with the prior art are:

[0014] 1. This utility model provides a horizontal dual-hardness seat foam structure, which replaces the traditional two-material injection molding by pre-embedding PUR rigid foam blocks, fundamentally avoiding the problem of mixing soft and hard foams, and significantly reducing scrap rate and debugging costs.

[0015] 2. The present invention provides a horizontal dual-hardness seat foam structure, which is simple and reliable in structure, easy to control in manufacturing process, and suitable for mass production, thereby improving seat comfort while ensuring lateral support. Attached Figure Description

[0016] Other objects and results of this invention will become more apparent and readily understood with reference to the following description taken in conjunction with the accompanying drawings, and with a more complete understanding of the invention. In the drawings:

[0017] Figure 1 This is the front view of this utility model;

[0018] Figure 2 yes Figure 1 Sectional view along the middle AA direction;

[0019] Figure 3 This is an exploded view of this utility model;

[0020] The reference numerals in the attached drawings include: foam body 1, PUR rigid foam block 2, suspension wire 3, felt 4, side wing 11, and positioning hole 21. Detailed Implementation

[0021] The technical solutions of various embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. It should be pointed out that all accompanying drawings are exemplary representations. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] The present invention will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0025] Reference Figures 1 to 3 , Figure 1 This is the front view of this utility model. Figure 2 yes Figure 1 Sectional view along the AA direction. Figure 3 This is an exploded view of the present invention, which provides a horizontal dual-hardness seat foam structure, including a foam body 1, PUR rigid foam blocks 2, a suspension wire 3, and felt 4. The core and side wings 11 of the foam body 1 are both made of soft material. The side wings 11 are made of PUR rigid foam blocks 2 with a hardness of 14 kPa or higher to increase the hardness of the side wings 11, thus achieving dual hardness. The foam body 1 is integrally foamed and molded from soft foam. The PUR rigid foam blocks 2 are disposed in the side wing 11 area of ​​the foam body 1 to improve the support hardness of the side wings 11. The felt 4 is disposed on the surface of the foam body 1 and is pre-attached to the upper mold or core mold during the foaming process. The suspension wire 3 is embedded in the foam body 1 to provide structural suspension support and is fixedly disposed on the lower mold. The hardness of the PUR rigid foam block 2 is not less than 14 kPa, the hardness of the foam body 1 is 6.5–10 kPa, and the distance between the PUR rigid foam block 2 and the side wing 11A surface of the foam body 1 is not less than 20 mm (refer to...). Figure 2 In section B), the distance between the PUR rigid foam block 2 and the side wing 11 of the foam body 1 is not less than 10mm (refer to section B). Figure 2 (C) The PUR rigid foam block 2 is provided with a positioning hole 21, the diameter of the positioning hole 21 is 7mm and the depth is not less than 15mm.

[0026] The following will refer to Figures 1 to 3 The working principle of this utility model will be explained.

[0027] During the production process, the felt 4 is first fixed to the upper mold or core mold; then the PUR rigid foam block 2 is precisely positioned by fitting it onto the mold positioning pin through its positioning hole 21; the suspension wire 3 is fixed to the lower mold. After the mold is closed, soft foam material is injected, and after curing and foaming, the PUR rigid foam block 2 is covered in the side wing area of ​​the foam body 1, forming a seat foam structure with dual hardness.

[0028] This invention relates to a horizontal dual-hardness seat foam structure, which replaces traditional two-material injection molding by pre-embedding PUR rigid foam blocks, fundamentally avoiding the problem of mixing soft and hard foams, and significantly reducing scrap rate and debugging costs. The structure is simple and reliable, the manufacturing process is easy to control, and it is suitable for large-scale production, improving seat comfort while ensuring lateral support.

[0029] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A horizontal dual-hardness seat foam structure, characterized in that, The device includes a foam body, PUR rigid foam blocks, suspension wires, and felt. The foam body is integrally foamed from soft foam. The PUR rigid foam blocks are located in the side wing areas of the foam body to improve the support rigidity of the side wing. The felt is located on the surface of the foam body. The suspension wires are embedded in the foam body to provide structural suspension support.

2. The horizontal dual-hardness seat foam structure according to claim 1, characterized in that, The hardness of the PUR rigid foam block is not less than 14 kPa, and the hardness of the foam body is 6.5–10 kPa.

3. The horizontal dual-hardness seat foam structure according to claim 1, characterized in that, The distance between the PUR rigid foam block and the side A surface of the foam body is not less than 20mm.

4. The horizontal dual-hardness seat foam structure according to claim 1, characterized in that, The distance between the PUR rigid foam block and the side wing of the foam body is not less than 10mm.

5. The horizontal dual-hardness seat foam structure according to claim 1, characterized in that, The PUR rigid foam block is provided with positioning holes.

6. The horizontal dual-hardness seat foam structure according to claim 5, characterized in that, The positioning hole has a diameter of 7mm and a depth of not less than 15mm.

7. The horizontal dual-hardness seat foam structure according to claim 1, characterized in that, The felt is pre-attached to the upper mold or core mold during the foaming process.

8. A horizontal dual-hardness seat foam structure according to claim 1, characterized in that, The hoisting steel wire is fixedly installed on the lower mold.

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