Automobile seat high-breathability headrest

Abstract

The utility model discloses a car seat high ventilation headrest, from outside to inside includes surface layer, outer layer high ventilation sponge, perforated thermoplastic polyurethane film, headrest body foam in proper order. Perforated thermoplastic polyurethane film still is provided with inner layer high ventilation sponge between headrest body foam. The utility model discloses a car seat high ventilation headrest, can replace original ordinary comfort composite sponge or ordinary comfort sponge, and its main physical performance parameter is better than ordinary comfort sponge, solves the problem that the ventilation and the comfort (hardness is a little high) of the current traditional PIP headrest performance are all worse than traditional coated product.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts, specifically a highly breathable headrest for automotive seats. Background Technology

[0002] With the rapid development of the automotive industry, aesthetics, comfort, safety, and lifespan have become important factors for car buyers. Seats are among the mandatory certification and testing products for complete vehicles in China. In the event of a rear-end collision or other impact, seats must effectively cushion the instantaneous impact force and effectively restrain and reduce the displacement of the human body during the collision, thereby improving the safety of occupants. At the same time, they must also achieve aesthetic appeal and comfortable seating. Therefore, improving the aesthetics, comfort, safety, and breathability of headrests is one of the key focuses in the current design and manufacturing process of automotive seats.

[0003] Traditional car seat cushions, backrests, and headrests primarily employ an overlay technique, where foam is first molded and then covered with a cover. This method is inefficient, and the cover and foam are separate layers. Under significant impact and prolonged use, the cover and foam can loosen and detach, affecting the seat's aesthetics, comfort, safety, and breathability. Another traditional technique is Pour-in-Place (PIP) or FIF one-piece molding, which involves directly injecting foam material into the sewn cover for a one-time molding process. PIP seat cushions and headrests produced using this technique are not only highly efficient to assemble but also have a full and aesthetically pleasing appearance. However, the breathability and comfort (due to higher firmness) of PIP seat cushions and headrests produced using this technique are inferior to those produced using traditional overlay techniques. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a highly breathable headrest for car seats.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A highly breathable headrest for car seats comprises, from the outside to the inside, a surface layer, an outer layer of highly breathable sponge, an open-pore thermoplastic polyurethane film, and a headrest body foam.

[0007] An inner layer of highly breathable sponge 5 is also provided between the open-cell thermoplastic polyurethane film and the headrest body foam.

[0008] The outer layer of highly breathable sponge has a thickness of 5-8 mm, and the inner layer of highly breathable sponge has a thickness of 10-15 mm.

[0009] This utility model has the following beneficial effects:

[0010] 1. This utility model is a high-breathability headrest for car seats, which can replace the original ordinary comfort composite sponge or ordinary comfort sponge. Its main physical performance parameters are superior to those of ordinary comfort sponge. It solves the problem that the breathability and comfort (high hardness) of the current traditional PIP headrest are inferior to those of traditional covered products.

[0011] 2. The PIP foaming structure of this utility model achieves a fundamental improvement over the original foaming products in terms of aesthetics, comfort, safety and breathability. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the headrest structure of this utility model;

[0013] Figure 2 This is a schematic diagram of another headrest structure according to the present invention;

[0014] Figure 3 In this invention, the arrangement relationship between the human head and the headrest is verified by using the data profile curve of a standard human head. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] like Figure 1 A highly breathable headrest for car seats comprises, from the outside to the inside, a surface layer 1, an outer highly breathable sponge 3, an open-cell thermoplastic polyurethane film 4, and a headrest body foam 6. The open-cell thermoplastic polyurethane film 4 has an open-cell structure to increase ventilation performance.

[0017] like Figure 1 In the specific manufacturing process of the headrest, the outer layer of highly breathable sponge 3 is bonded to the surface layer 1 and the open-pore thermoplastic polyurethane film 4 in advance to form a multi-layer structure, and then polyurethane injection molding is performed to obtain the headrest.

[0018] like Figure 2 A highly breathable headrest for car seats comprises, from the outside to the inside, a surface layer 1, an outer highly breathable sponge 3, an open-cell thermoplastic polyurethane film 4, an inner highly breathable sponge 5, and a headrest body foam 6. The open-cell thermoplastic polyurethane film 4 has an open-cell structure to increase ventilation performance.

[0019] In this application, Figure 3To verify the relationship between the human head and the headrest using standard human head data profile curves, a more reasonable design area for highly breathable foam is determined. This also improves seating comfort and the headrest's restraint on the human head.

[0020] Both the outer high-breathability sponge 3 and the inner high-breathability sponge 5 use the following high-breathability sponge. The high-breathability sponge formula is as follows: 60-80 parts polyether polyol, 20-40 parts polymer polyol, 4-5 parts water, 0.8-2 parts foaming stabilizer, 0.2-0.6 parts amine catalyst, 0.1-0.3 parts tin catalyst, 12-16 parts flame retardant, 2-4 parts flame composite additive, 52-55 parts toluene diisocyanate, and 0.5-3.5 parts cell opener. All the above proportions are by weight.

[0021] The polyether polyol HO·(C2H4O) m ·(C3H6O) n ·H, where m and n represent the degree of polymerization of ethylene oxide and propylene oxide, respectively;

[0022] Polymer polyols: Complexes formed by free radical graft polymerization of polyether polyols with vinyl monomers;

[0023] Foaming stabilizer: polyether siloxane;

[0024] Amine catalysts: tertiary amines or quaternary ammonium salts;

[0025] Tin catalyst: stannous octoate;

[0026] Flame retardant: chloroalkyl phosphite;

[0027] Flame composite additive: Flame composite agent FLE200;

[0028] Opening agent: silicone oil.

[0029] The polyether polyol is a propylene oxide polymer or an ethylene oxide polymer starting with glycerol or sorbitol; the vinyl monomer is acrylonitrile or styrene.

[0030] The method for manufacturing highly breathable sponge includes the following steps: (1) Prepare raw materials according to the following formula: 60-80 parts of polyether polyol, 20-40 parts of polymer polyol, 4-5 parts of water, 0.8-2 parts of foaming stabilizer, 0.2-0.6 parts of amine catalyst, 0.1-0.3 parts of tin catalyst, 12-16 parts of flame retardant, 2-4 parts of flame composite additive, 52-55 parts of toluene diisocyanate, and 0.5-3.5 parts of cell opener. All the above proportions are by weight. (2) Adjust the raw material temperature of polyether polyol, polymer polyol and toluene diisocyanate so that the raw material temperature of polyether polyol is 19-23℃, the raw material temperature of polymer polyol is 24-28℃ and the raw material temperature of toluene diisocyanate is 19-23℃. (3) Mix each raw material according to the formula. The raw materials are fed into the foaming machine, where the mixing head of the foaming machine stirs the raw materials to make them mix and foam; (4) combustible gas is injected into the foam cells of the sponge, ignited and exploded to eliminate the bubble film on the foam cells; (5) the foamed blocks are sent to the foamed block storage rack for curing, and the curing time is greater than or equal to 36 hours; (6) the foamed body formed after foaming is sent to the cutting machine through the conveyor belt of the foaming machine to be cut into blocks; the mixing speed of the mixing head of the foaming machine is 4300r / min, the pressure of the mixing head is 1.5bar, and the conveying speed of the conveyor belt is 5.5m / min; when the raw materials are fed into the foaming machine, the valves of each raw material entering the foaming machine from the corresponding storage tank are uniformly controlled by the control circuit board of the foaming machine, and the control circuit board adjusts the discharge flow of the corresponding storage tank according to the formula.

[0031] Example 1:

[0032] A highly breathable sponge has the following formula: 60 parts polyether polyol, 20 parts polymer polyol, 4 parts water, 0.8 parts polyether siloxane, 0.2 parts tertiary amine, 0.1 parts stannous octoate, 12 parts chloroalkyl phosphite, 2 parts flame retardant FLE200, 52 parts toluene diisocyanate, and 0.5 parts silicone oil. All proportions are by weight. The performance indicators of the sponge are shown in Table 1.

[0033] Table 1

[0034]

[0035]

[0036] Example 2:

[0037] A highly breathable sponge has the following formula: 80 parts polyether polyol, 40 parts polymer polyol, 5 parts water, 2 parts polyether siloxane, 0.6 parts tertiary amine, 0.3 parts stannous octoate, 16 parts chloroalkyl phosphite, 4 parts flame retardant FLE200, 55 parts toluene diisocyanate, and 3.5 parts silicone oil. All proportions are by weight. The performance indicators of the sponge are shown in Table 2.

[0038] Table 2

[0039]

[0040]

[0041] In this application, a highly elastic base fabric with consistent warp and weft elasticity in all directions can also be used, as shown in Table 3. Its warp and weft elasticity is basically consistent and achieves high elastic properties, solving the problem of inconsistent warp and weft elasticity in traditional base fabrics. This base fabric is designed as the base fabric for PIP perforated leather or surface fabric 1, allowing for better bonding between the PIP perforated leather or surface fabric 1 and the breathable sponge 3 of technical solution 1, while also... Figure 1 The foamed product has a more elastic, fuller, and more aesthetically pleasing appearance.

[0042] Table 3

[0043]

Claims

1. A highly breathable headrest for car seats, characterized in that, From the outside to the inside, it includes the surface layer (1), the outer layer of highly breathable sponge (3), the open-cell thermoplastic polyurethane film (4), and the headrest body foam (6).

2. The highly breathable headrest for car seats according to claim 1, characterized in that, An inner layer of highly breathable sponge (5) is also provided between the open-cell thermoplastic polyurethane film (4) and the headrest body foam (6).

3. The highly breathable headrest for car seats according to claim 2, characterized in that, The outer layer of highly breathable sponge (3) has a thickness of 5-8 mm, and the inner layer of highly breathable sponge (5) has a thickness of 10-15 mm.

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