JP2000203494A - Seat for aircraft - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a seat nonflammable by adding a two-liquid flame retardant to a foaming stock solution of urethane foam, injecting it into a die for a foaming process, forming a seat base material with the hardness in a specific range, and fittably providing a nonflammable and/or self-extinguishing cover material to the seat base material. SOLUTION: A two-liquid flame retardant and a urethane foam foaming material are injected into a cavity formed with upper and lower dies and a seal member, and a seat base material 1 of urethane foam with the hardness of about 20-25 kg f/ϕ200 is formed by foam molding after injection. A hook-and- loop fastener is provided on the seat base material 1 via several nonwoven fabrics, and a nonflammable and/or self-extinguishing cover material 6 is fitted via the hook-and-loop fastener. The seat base material 1 has nonflammability and/or a self-extinguishing property, and it has a prescribed shape and hardness. The whole seat can be formed into a nonflammable structure, and a spring inclusion can be eliminated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to aircraft seats.

[0002]

2. Description of the Related Art Conventionally, aircraft seats (hereinafter referred to as seats).
Is required to pass the combustion test of airworthiness examination.
For this reason, various countermeasures have been implemented, and there are numerous inventions in prior art documents (hereinafter referred to as documents). Literature can be broadly classified, and examples of applying flame-retardant means to the outer casing body (surface material, sheet surface material, etc.)
There is also an example (a sheet flame-retardant means) of applying a flame-retardant means to an internal sheet base material (soft foam, urethane foam). (1) Examples of outer flame retardant means will be given. Japanese Patent Application Laid-Open No. 5-137858, particularly an aircraft seat cushion, comprises a flame prevention layer provided on the outer periphery of a spongy plastic in which a spring core is embedded, and a cover material covering the flame prevention layer. It is a configuration that strives for disaster prevention in layers. The vehicle seat disclosed in Japanese Patent Application Laid-Open No. 6-269332 is a flame-resistant seat made by entanglement of a high-temperature resistant fiber with an open-cell type flame-retardant elastic plastic foam composed of two different layers interposed by sprinkles. A cover material is provided via an intermediate layer, and a fire-retardant elastic plastic foam and a flame-resistant intermediate layer are used for disaster prevention. JP-A-7-
The vehicle seat of No. 177947 is substantially the same as described above.
Japanese Patent Application Laid-Open No. 61-222411 discloses an aircraft passenger seat having a flame-retardant structure, in which a seat cushion and a back cushion made of polyurethane foam material are covered with a flame-retardant upholstery. It is a configuration aiming at. (2) Examples of sheet flame-retardant means will be given. The non-combustible soft foam disclosed in JP-A-3-190937 is a closed cell formed by heating and foaming a mixture of an inorganic filler, a vinyl chloride resin, a heat-insulating agent, a foaming agent and a flame-retardant plasticizer under pressure. With the addition of a flame-retardant plasticizer, the composition is a self-extinguishing, non-flammable, inorganic soft foam. Japanese Patent Application Laid-Open No. H8-24068 discloses a vehicle seat and a manufacturing method in which a flame-retardant phosphorus-containing component is added to a mesh body and other parts of the seat, and toxic gas is generated by the flame-retardant phosphorus-containing component. It is a configuration that aims at reduction of disasters and disaster prevention.

The following documents are given as examples of improved sheets which impart properties to the laminated structure and hardness of the sheet and have no spring in the sheet. Japanese Patent Application Laid-Open No. Hei 9-136940 discloses a method for producing a high-hardness elastic polyurethane foam, using a specific polyether polyol and a polymer polyol obtained by polymerizing a vinyl monomer in the polyol, and using a trimethylol cellulose as a crosslinking agent and a blowing agent. The invention discloses that the physical property hardness of the foam is set to approximately 18 to 26 kgf / φ200 in the examples, and aims to provide a method for producing a high-hardness polyurethane foam suitable for different hardness portions. Japanese Patent Application Laid-Open No. 9-40956 discloses a urethane foam molded hat having a foamed urethane foam molded hat configuration, and discloses in the examples that the hardness of the polyurethane foam is 25 kgf / φ200, realizing uniform body pressure distribution and deflection characteristics. This is a configuration for improving the sitting comfort.

[0004]

The above-mentioned documents (1) to (4) have been devised with respect to flame retardancy, and are suitable as seats for aircraft. However, since a spring is interposed for the purpose of securing elasticity of the sheet body (plastic foam), compressive recovery force, impact recovery force, and the like, there is a problem that the structure becomes complicated and requires time and effort in manufacturing. Although the above document has the feature of not interposing a spring, it does not disclose the rigidity of the seat cushion, and the seat cushion and the like are not provided with flame retardant means, but leave a problem.

In the above-mentioned document, a flame retardant means is applied to the seat body to make the seat body hard enough to be used as an aircraft seat.
However, there is a problem that the flame-retardant means is not provided on the outer peripheral portion of the seat body as in the case of the cover material, which is not sufficient. In addition, there is no disclosure about the hardness, leaving a problem.

Further, the above-mentioned documents are devised in terms of hardness, and are suitable for aircraft seats. However, it does not have flame-retardant means and is not considered suitable for aircraft seats.

[0007] As described above, each document has sufficient features within the scope of the purpose. However, it does not seem to be enough yet to meet the optimal conditions for an aircraft seat.

[0008]

According to the first aspect of the present invention, there is provided an optimal aircraft seat having a structure in which the entirety of the sheet has a flame-retardant (flame-retardant which has passed a combustion test in airworthiness examination, the same applies hereinafter) structure, An object of the present invention is to secure the hardness of urethane foam and eliminate inclusions of a spring.

A first aspect of the present invention is to provide a urethane foam having a hardness of about 20 to 25 kgf / φ200, which is obtained by adding a two-component flame retardant to a foaming stock solution of the urethane foam, immediately injecting it into a mold, and foaming. An aircraft seat including a sheet base and a flame-retardant and / or self-extinguishing cover material which is provided on the sheet base so as to be freely attached and detached.

[0010] The invention of claim 2 provides an optimal aircraft seat by using substantially the entirety of the seat as a flame-retardant structure, and ensures that the seat is compatible with the human body, has flexibility, or has a reduced impact. , To further enhance the hardness.

A second aspect of the present invention is a urethane foam having a hardness of about 20 to 25 kgf / φ200, which is obtained by adding a two-component flame retardant to an urethane foam foaming solution and immediately pouring it into a mold and foaming. An aircraft seat comprising a sheet base, a low resilience member provided on the sheet base, and a flame-retardant and / or self-extinguishing cover material provided detachably on the sheet base. is there.

The third aspect of the present invention aims to provide an optimal aircraft seat by using the entire seat as a flame-retardant structure, and to provide the seat with another object, a massage effect, and a sense of cool air.

A urethane foam having a hardness of about 20 to 25 kgf / φ200, which is formed by adding a two-component flame retardant to a foaming stock solution of the urethane foam and immediately pouring it into a mold and performing foaming treatment. A sheet base, an acupressure part such as a concave / convex / lattice ridge, or a slit provided on the sheet base; and a flame-retardant and / or self-extinguishing cover material provided on the sheet base so as to be freely attached / detachable. An aircraft seat composed of:

The invention of claim 4 clarifies the components of the two-component flame retardant.

According to a fourth aspect of the present invention, there is provided an aircraft seat in which the two-component flame retardant is composed of polyetherpolyol and tris (monochlorofluorophenol) phosphate or trifluoromethylpentyl alcohol.

The invention of claim 5 clarifies the composition of the two-component flame retardant.

According to a fifth aspect of the present invention, there is provided an aircraft seat in which tris (monochlorofluorophenol) phosphate or trifluoromethyl pentyl alcohol is mixed with 10 parts by weight per 100 parts by weight of polyether polyol.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, dies (upper and lower dies and seal members) required for forming a sheet are manufactured. The model is manufactured considering the shrinkage dimensions of aluminum and urethane foam. Based on this model, the upper and lower mating surfaces are accurately manufactured. Also, upper and lower dies are sequentially manufactured by aluminum casting based on this model. At this time, a seal member for filling a gap in a peripheral portion is manufactured. The upper and lower molds and the seal member are manufactured by the above operations and procedures.

The upper and lower molds and the seal member are fitted and assembled to form a cavity, and a urethane foam foam material and a two-component mixed flame retardant are injected into the cavity. The foaming is performed by operations such as foaming by normal temperature, heating, cold / cold foaming, hot water foaming, and other means.

After the foaming, the upper and lower molds are opened to take out the sheet substrate, and several surface fasteners are attached to the sheet substrate. A seat is formed by attaching a cover material (hereinafter, referred to as cover material) having flame retardancy and / or self-extinguishing property using the hook-and-loop fastener.

Similarly, the backrest is made of a urethane foam foam material and
Since the sheet material for the backrest is formed using the raw material of the two-liquid mixed flame retardant and at least the upper and lower molds (not shown), the surface fastener of the sheet material for the backrest is used. The seat for the backrest is constructed by attaching the cover material.

The seat and the seat for the backrest are connected and attached to the seat frame of the aircraft.

According to the second aspect of the present invention, there is provided a structure in which a low resilience member is provided on the surface of the sheet base material. And / or a method of sticking to the surface via a non-woven fabric (hereinafter, referred to as a non-woven fabric) having self-extinguishing properties, a method of forming a concave portion, and fitting the concave portion with a non-woven fabric via a non-woven fabric. Further, in the configuration in which the acupressure part is provided on the surface of the sheet substrate according to claim 3, a method in which a urethane foam foam material is previously set in an upper and lower mold and injected, and after the sheet substrate is molded, adhered to the surface via a nonwoven fabric. And a method of forming a concave portion, and fitting and attaching the concave portion to the concave portion via a nonwoven fabric.

[0024]

An embodiment of the present invention will be described below.
FIG. 8 to FIG. 8 each show an example of a method for manufacturing a sheet, and an example of a method for manufacturing a seat for a backrest conforms thereto. FIG. 1 shows a state in which the seat frame 40 is attached to the seat frame 40.

The sheet substrate 1 is composed of a two-component mixed flame retardant 2 and a urethane foam foam material in a cavity D composed of upper and lower dies A and B and a sealing member C.
(Undiluted solution) 3 is injected, and foaming is performed after the injection. Therefore, the formed sheet substrate is flame-retardant and / or self-extinguishing,
And it has a predetermined shape and hardness. It should be noted that the flame retardant 2 of the two-liquid mixture is such that tris (monochloropropyl) phosphate or 10 parts by weight of trifluoromethyl pentyl alcohol is mixed with 100 parts by weight of polyether polyol. A surface fastener 5 is provided on the sheet substrate 1 via several nonwoven fabrics 4, and a cover material 6 is provided on the outer surface of the sheet substrate 1 by using the surface fastener 5. In addition, sheet base
1 is provided with a seat bottom 1 ′ on the back surface 1b.
It is also possible to form a three-layer foam plate on the back surface 1b of the sheet substrate 1 (not limited to three layers, for example, two layers, four layers, five layers, etc.) as shown in FIG. Other layers are also possible.) Laminated, and a nonwoven fabric (net, steel wire,
(A foreign substance such as a three-dimensional structural member "honeycomb structure") is interposed (the interposing method includes an adhesive method, a laminating method, and the like).
It is also possible to adopt a configuration in which the integrated seat bottom 1 ′ is joined and integrated, and this configuration is useful for reducing costs, improving durability, preventing sagging, and the like. In addition, by adopting the sealing member C, sealing performance can be improved and molding can be easily performed. 4a in the figure is sheet base 1
Is a non-woven fabric for reinforcement provided at an appropriate position on the back surface 1b of the non-woven fabric. In addition, a reinforcing nonwoven fabric 4a may be provided on substantially the entire back surface 1b or on a portion of the back surface 1b other than the sheet bottom 1 ′.

The backrest sheet substrate 10 is formed by injecting a two-component mixed flame retardant 2 and a urethane foam material 3 into a cavity formed by a vertical mold (not shown) or the like, and foaming after injection. Therefore, the molded backrest sheet base material 10 is flame-retardant and / or self-extinguishing, and has a predetermined shape and hardness. The backrest sheet base 10 is provided with a hook-and-loop fastener 5 via several nonwoven fabrics 4, and a cover material 6 is provided on the outer surface of the backrest sheet base 10 using the hook-and-loop fastener 5. Can be

The sheet substrate 1 or the backrest sheet substrate 10
It is also possible to equip other mechanisms, an example of which is shown in FIG.
This will be described with reference to FIG. First, FIGS. 11 and 12 show examples of the sheet substrate 1, and FIG. 11 shows the surface 1a of the sheet substrate 1 directly.
Or, in an example in which the acupressure part 20 is provided through an intervening material such as a non-woven fabric and a hook-and-loop fastener (the other is also not shown), a massaging effect on the human body or a cooling effect is exhibited, You can expect a meaningful boarding. Fig. 12 shows the surface of sheet substrate 1.
1a with a low rebound member 30 to reduce fatigue during boarding and increase comfort through fitting to the human body or effective cushioning against various impacts and improvement in physique compatibility Can be expected to board. Next, FIGS. 13 to 15 show examples of the backrest sheet base material 10, and FIG. 13 shows the backrest sheet base material 10 directly on the surface 10a or an unillustrated nonwoven fabric, hook-and-loop fastener or other inclusion. FIG. 14 shows an example in which a low resilience member 30 is provided on the surface 10a of the backrest sheet base 10, and FIG. 15 shows a backrest sheet base. Shiatsu part 2 on 10 head 10a '
Reference numeral 0 denotes an example in which the low resilience member 30 is provided on the backrest portion 10a ". In the drawing, reference numeral 4a denotes a reinforcing nonwoven fabric provided at an appropriate position on the back surface 10b of the backrest sheet base material 10. Leaning sheet base material 10
In the example in which the acupressure part 20 or the low resilience member 30 is provided on the head 10a 'of
As shown, a configuration covering the top surface of the head 10a ', or the head 10a'
, Etc. below the top surface.

The sheet substrate 1 or the backrest sheet substrate 10
In the configuration in which the acupressure part 20 or the low resilience member 30 is provided, the site or combination in which the acupressure part 20 or the low resilience member 30 is provided is:
The invention is not limited to this example, and there are various other examples.

Although not shown, in the example in which the nonwoven fabric, net, steel wire, three-dimensional structural member, and the like are interposed in the sheet substrate 1 and / or the backrest sheet substrate 10, the effects of the above-described examples are obtained. There are benefits such as a feeling of fitting to the human body, a cushioning effect, adaptability to the human body, acupressure effect, and a cool feeling effect. A synergistic effect can also be expected. Further, prevention of set of the sheet base material 1 and / or the backrest sheet base material 10 and improvement of durability can be expected.

In the figure, reference numeral 40 denotes a seat frame.

[0031]

According to the first aspect of the present invention, a two-component flame retardant is added to an undiluted foam of urethane foam, injected into a mold, foamed and molded to have a hardness of about 20 to 25 kgf / φ200. It is composed of a urethane foam sheet base material and a cover material attached to the sheet base material. Therefore, there is an effect that an optimal aircraft seat can be provided by making the entire seat a flame-retardant structure or the like, the hardness of the urethane foam can be secured, and the inclusions of the spring can be eliminated.

The invention of claim 2 is characterized in that the foaming stock solution of urethane foam contains 2
A sheet base of a urethane foam having a hardness of about 20 to 25 kgf / φ200, which is formed by adding a liquid flame retardant, injecting into a mold, and performing foaming treatment, and a low resilience member provided on the sheet base. And a cover material to be attached to the sheet substrate. Therefore, it is possible to provide an optimal aircraft seat with substantially the entire structure as a flame-retardant structure or the like, and to further enhance the rigidity while ensuring the suitability of the seat to the human body, flexibility or relaxation at impact, and the like. There are effects such as that.

The invention of claim 3 is characterized in that the foaming stock solution of urethane foam contains 2
A urethane foam sheet base with a hardness of about 20 to 25 kgf / φ200, which is formed by adding a liquid flame retardant, injecting it into a mold, foaming, and forming irregularities and grid protrusions provided on this sheet base It is composed of acupressure parts such as strips and slits, and a cover material to be attached to the sheet substrate.
Therefore, there is an effect that an optimal aircraft seat can be provided by making the entire seat a flame-retardant structure or the like, or the seat can have another purpose, a massaging effect, and a sense of cool breeze.

According to a fourth aspect of the present invention, the two-component flame retardant is composed of polyetherpolyol and tris (monochlorofluorophenol) phosphate or trifluoromethylpentyl alcohol. Therefore, a useful two-component flame retardant can be provided.

According to a fifth aspect of the present invention, tris (monochlorofluorophenol) phosphate or 10 parts by weight of trifluoromethylpentyl alcohol is mixed with 100 parts by weight of polyetherpolyol. Therefore, it is possible to provide a two-component flame retardant having a useful compounding ratio.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view showing the entirety of an aircraft seat.

FIG. 2 is a cross-sectional view showing a model of a sheet base material.

FIG. 3 is a cross-sectional view illustrating a mating surface of a vertical die.

FIG. 4 is a cross-sectional view illustrating the production of a lower die.

FIG. 5 is a cross-sectional view illustrating the production of a lower mold and a seal member.

FIG. 6 is a cross-sectional view illustrating a vertical die and a seal member.

FIG. 7 is a cross-sectional view illustrating opening of the upper mold.

FIG. 8 is a cross-sectional view illustrating removal of a sheet base material.

FIG. 9 is a perspective view of the back surface of the sheet substrate.

FIG. 10 is a partially cutaway perspective view illustrating a state where a hook-and-loop fastener is attached to a sheet base material.

FIG. 11 is a perspective view illustrating an example in which an acupressure part is provided on a sheet base material.

FIG. 12 is a perspective view illustrating an example in which a low resilience member is provided on a sheet substrate.

FIG. 13 is a partially cutaway perspective view illustrating an example in which a finger pressure portion is provided on a backrest sheet base material.

FIG. 14 is a partially cutaway perspective view illustrating an example in which a low resilience member is provided on a backrest sheet base material.

15 is a partially cutaway perspective view illustrating an example in which the acupressure part and the low resilience member are provided on the backrest sheet base material.

[Explanation of symbols]

 1 Sheet base 1 'Seat bottom 1a Surface 1b Back 2 Flame retardant 3 Urethane foam foam 4 Side fastener 4a Surface fastener 5 Surface fastener 6 Cover material 10 Backrest sheet base 10a Surface 10b Back 10a' Head 10a " Part 20 Shiatsu part 30 Low resilience member 40 Seat frame A Upper die B Lower die C Seal member D Carpet

Claims (5)

[Claims] 1. A urethane foam sheet base material having a hardness of about 20 to 25 kgf / φ200, which is obtained by adding a two-component flame retardant to an urethane foam foaming stock solution, immediately injecting it into a mold, and performing foaming treatment. And a flame-retardant and / or self-extinguishing cover material provided on the sheet base so as to be attachable / detachable. 2. A urethane foam sheet base material having a hardness of about 20 to 25 kgf / φ200, which is formed by adding a two-component flame retardant to an urethane foam foaming solution, immediately injecting it into a mold, and performing foaming treatment. And a low resilience member provided on the sheet base, and a flame-retardant and / or self-extinguishing cover material provided on the sheet base so as to be attachable and detachable. 3. A urethane foam sheet base material having a hardness of about 20 to 25 kgf / φ200, which is formed by adding a two-component flame retardant to a foaming solution of urethane foam, immediately injecting it into a mold, and performing foaming treatment. And an acupressure part such as projections and depressions, grid ridges and slits provided on the sheet base, and a flame-retardant and / or self-extinguishing cover material which is provided on the sheet base so as to be freely attached and detached. Aircraft seat. 4. The two-component flame retardant according to claim 1, 2 or 3, wherein the two-component flame retardant is composed of polyetherpolyol and tris (monochlorofluorophenol) phosphate or trifluoromethylpentyl alcohol. An aircraft seat as described in. 5. Tris (monochlorofluorophenol) phosphate or trifluoromethyl pentyl alcohol is added to 100 parts by weight of the polyether polyol.
Claim 1, Claim 2 or Claim 3 having a composition of 0 parts by weight mixed
An aircraft seat as described in.