JP2015145178A - Vehicular seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicular seat which can deal with local degradation and can provide excellent comfort.SOLUTION: In an automobile seat 1 which covers a surface of a core material 21 comprising a seat body 2 with a surface material 22, at parts of a seating surface 2a and a back surface 2b, a seating surface recessed part 20a and a back surface recessed part 20b are formed to a part in contact with a human body 4 of a person for whom the seat is used. The seating surface recessed part 20a and the back surface recessed part 20b are provided with a seating surface moisture absorbing and desorbing member 3a and a back surface moisture absorbing and desorbing member 3b that are shaped in the way that they match the seating surface recessed part 20a and the back surface recessed part 20b and can be removable/attachable. The seating surface moisture absorbing and desorbing member 3a and the back surface moisture absorbing and desorbing member 3b are in contact with the human body 4 of the person for whom the seat is used in the state that they are provided for the seating surface recessed part 20a and the back surface recessed part 20b.

Description

  The present invention relates to seats for various vehicles such as automobiles, trains, and buses.

In general, seats for various vehicles such as automobiles, trains, and buses are constructed by covering the surface of an elastic core material made of hard urethane, resin mesh-like three-dimensional structures, coil springs, etc. with a surface material. Has been. Such seats were primarily configured with consideration for sitting comfort.

Conventionally, a warming chair using moisture absorbing / releasing exothermic fibers on at least a part of the seating surface has been proposed as a consideration of hygroscopicity and heat retention in winter in addition to sitting comfort. (For example, refer to Patent Document 1).

This heat-insulating chair is configured to ensure moisture absorption and heat retention by the moisture-absorbing / releasing exothermic fibers used for the surface material.

JP 2001-112578 A

However, in the case of the above-mentioned conventional heat-insulating chair, moisture absorbing and releasing exothermic fibers are provided on the seating surface of the surface material that the human body comes into contact with. Therefore, the seating surface actively absorbs moisture compared to other parts. Moisture release will be repeated. At the time of moisture absorption and desorption, dirt components and odor components are carried along with moisture, and such dirt components and odor components accumulate over time, leading to an unsanitary state. Therefore, there is a concern that the surface material of the portion corresponding to the seating surface is in an unsanitary state in terms of acceleration as compared with other portions, and deteriorates. In addition, since the load of the human body is applied to the seating surface, the surface material and the portion of the core material below the surface material also become unsanitarily accelerated and easily deteriorate.

Therefore, in the above-mentioned conventional warming chair, the surface material of the seating surface that comes into contact with the human body and the core material below it become yellowish or lose elasticity, although the other parts are clean. As a result, it becomes unsanitary and rapidly deteriorates locally and causes deterioration.

Therefore, it is conceivable to prevent a local unsanitary state or deterioration by providing a seat cover or a cushion, but in this case, the moisture absorbing action by the moisture absorbing / releasing exothermic fiber Cannot be obtained sufficiently. In addition, in the case of public trains and buses, it is not possible to adopt such seat covers and cushions in consideration of the subsequent washing and management. There is a concern that the feeling of holding the seat during driving may decrease.

In addition, in the case of the above-mentioned conventional warming chair, although moisture absorbing and releasing exothermic fibers are provided on the seating surface that the human body comes into contact with, only moisture is used for the surface material. There was a limit to the amount of fibers provided to act on.

The present invention has been made in view of such circumstances, and provides a vehicle seat that can prevent local unsanitary or deteriorated and can exhibit excellent comfort. It is an object.

A vehicle seat according to the present invention for solving the above-described problems is a vehicle seat configured by covering a surface material on a surface of a core material constituting a seat body, and includes a seat surface, a back surface, and a headrest. In at least one of the portions, a recessed portion is formed in a portion that comes into contact with the human body of the user, and the recessed portion is shaped so as to match the recessed portion and is detachable The moisture absorbing / releasing member is provided so that the moisture absorbing / releasing member is in contact with the human body of the user while being provided in the recessed portion.

In the vehicle seat, the moisture absorbing / releasing member is provided with a moisture absorbing / releasing layer made of a moisture absorbing / releasing material on an elastic layer configured to have elasticity by an elastic material, and the outer periphery thereof is a covering material. The surface of the covering material that comes into contact with the human body through the moisture absorption / release layer may be a ventilation surface that has air permeability.

In the above vehicle seat, the moisture absorbing / releasing member is configured to have elasticity by an elastic material on the moisture absorbing / releasing layer made of the moisture absorbing / releasing material, and elastic ventilation configured to have air permeability. A layer may be provided, and the outer periphery of these layers may be covered with a covering material. The covering material may be a surface in contact with a human body through an elastic air-permeable layer that is a breathable air-permeable surface.

In the vehicle seat, the moisture absorbing / releasing member is configured to have elasticity by an elastic material, and a moisture absorbing / releasing material is provided on and inside the elastic ventilation layer configured to have air permeability. The moisture absorbing / releasing property is imparted, and the outer periphery of the moisture absorbing / releasing elastic ventilation layer is covered with a coating material, and the coating material may be a breathable ventilation surface on the surface in contact with the human body. Good.

In the above vehicle seat, the moisture absorbing / releasing member is configured to have elasticity by an elastic material on the moisture absorbing / releasing layer made of the moisture absorbing / releasing material, and elastic ventilation configured to have air permeability. The outer periphery of these layers is covered with a covering material, and the recessed portion is formed so as to be provided with either the elastic ventilation layer or the moisture absorbing / releasing layer of the moisture absorbing / releasing member as a surface. The material has a breathable ventilation surface formed on the surface that comes into contact with the human body through the elastic ventilation layer when the moisture absorption / release member is provided in the recessed portion with the elastic ventilation layer as the surface, and moisture absorption / release When the moisture absorbing / releasing member is provided in the recessed portion with the layer as the surface, a breathable surface having air permeability may also be formed on the surface in contact with the human body via the moisture absorbing / releasing layer.

In the vehicle seat, the moisture absorbing / releasing material may absorb and release moisture of 15% or more of its own weight by a change between 25 ° C. and 40% RH and 25 ° C. and 80% RH.

In the above vehicle seat, the moisture absorbing / releasing material may be 100 g or more per seat.

In the vehicle seat, the recessed portion may be formed of a film, a sheet, or a resin molded body that prevents moisture absorbed and released by the moisture absorbing / releasing member from reaching the seat body.

In the above vehicle seat, a recessed portion is integrally provided from the seat surface to the back surface, and the moisture absorbing / releasing member is integrally formed from the seat surface to the back surface so as to match the integrated recessed portion. It may be what was done.

In the above vehicle seat, the seat body is provided with a vent hole that communicates the recessed portion with the outside, and the moisture absorbing / releasing member is provided in the recessed portion and faces at least the vent hole of the recessed portion. The portion of the covering material at the position is configured to have air permeability and moisture permeability, communicated with the vent hole from the ventilation surface via the moisture absorption / release member, and moisture absorbed into the moisture absorption / release member from the ventilation surface, It may be configured to be able to diffuse into the moisture absorbing member.

In the above vehicle seat, the seat body is provided with a ventilation path that communicates the recessed portion with the outside, and the moisture absorbing / releasing member faces the ventilation path of the recessed portion while being provided in the recessed portion. The part of the covering material at the position is provided with a communicating part having air permeability and moisture permeability, and negative pressure acts on the ventilation path, so that moisture absorbed from the ventilation surface into the moisture absorbing / releasing member is vented from the communicating part. It may be configured to be able to exhaust through a route.

According to the present invention, in the vehicle seat, the moisture absorbing / releasing member provided in the recessed portion of the chair body absorbs moisture due to insensitive vaporization from the human body of the user, so that a comfortable feeling of use can be obtained. It becomes. In addition, the moisture absorption and desorption member actively accumulates and absorbs moisture from the human body due to insensitive digestion, so that dirt components and odor components that are carried with this moisture accumulate. These dirt components and odor components can be removed by removing them from the main body and renewing them or replacing them with new ones. Therefore, the vehicle seat is hygienic and has excellent durability by preventing dirt components and odor components from accumulating on the moisture absorbing / releasing member to prevent local unsanitation or deterioration. Can be obtained.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view showing an outline of the overall configuration of an automobile seat which is a vehicle seat according to the present invention. It is a side view showing the outline of the whole composition of the car seat which is the vehicle seat concerning the present invention. FIG. 3 is a partially omitted cross-sectional view of a seat surface of an automobile seat that is a vehicle seat according to the present invention. It is a partial omission sectional view of a seating surface which shows a seating surface moisture absorption / release member concerning other embodiments of a car seat which is a vehicle seat concerning the present invention. It is a partial omission sectional view of a seating surface which shows a seating surface moisture absorption / release member concerning other embodiments of a car seat which is a feed seat concerning the present invention. (A) is a partially omitted cross-sectional view of a seating surface showing a seating surface moisture-absorbing / releasing member according to still another embodiment of an automobile seat that is a vehicle seat according to the present invention, and (b) is a seating surface absorbing member. It is a partial abbreviation sectional view of a seating surface which shows other usage conditions of a moisture releasing member. It is sectional drawing of the seat surface which shows the principal part of the vehicle seat which concerns on other embodiment of the vehicle seat which concerns on this invention. It is sectional drawing of the seat surface which shows the principal part of the vehicle seat which concerns on other embodiment of the vehicle seat which concerns on this invention. It is a disassembled perspective view which shows the outline of the whole structure of the motor vehicle seat which concerns on other embodiment of the vehicle seat which concerns on this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 and FIG. 2 show an outline of the overall configuration of the automobile seat 1 according to the present invention, and FIG. 3 shows a cross-section of the main part of the automobile seat 1.

The vehicle seat 1 is configured by covering a surface material 22 on the surface of an intermediate core material 21 constituting the seat body 2, and includes a seating surface 2a, a rear surface 2b, and a seating surface 2a and a rear surface 2b of the headrest 2c. , The seat surface recessed portion 20a and the back surface recessed portion 20b are formed in a portion that comes into contact with the human body 4, and the seat surface recessed portion 20a and the back surface recessed portion 20b include the seat surface recessed portion 20a. The seat surface moisture absorbing / releasing member 3a and the back surface moisture absorbing / releasing member 3b, which are shaped so as to conform to the rear recessed portion 20b and are detachable, are provided. The wet member 3b is provided in the seat surface recessed portion 20a and the back surface recessed portion 20b so that the seat surface moisture absorbing / releasing member 3a and the back surface moisture absorbing / releasing member 3b are in contact with the human body 4.

The seat body 2 includes a seating surface 2a, a back surface 2b, and a headrest 2c. However, the seat body 2 is not limited to the above as long as it is used in an automobile, and for example, the back surface 2b and the headrest 2c may be integrally configured. The seating surface 2a, the back surface 2b, and the headrest 2c may be integrally configured. Moreover, the some seat surface 2a and the back surface 2b may be comprised integrally like a rear seat. The seat body 2 is configured by covering a surface material 22 on the surface of an intermediate core material 21 that forms the form of the entire chair.

The core material 21 is not particularly limited as long as it is normally used. For example, a metal or resin frame, a resin foam, a resin mesh three-dimensional structure are used. In addition, it is possible to use a structure formed by combining a structure using a coil spring and an elastic material such as a non-woven fabric alone or in combination. Moreover, as the core material 21, a molded body formed by pressing, bending, or grinding a plate material such as resin or metal can be used.

Such a core material 21 may be provided with air permeability. In the case where the core material 21 is made of the above-mentioned foam, air permeability can be obtained by using a non-independent foamed molded body. When the core material 21 is made of the mesh-like three-dimensional structure, the coil spring structure, or the nonwoven fabric, the air permeability can be obtained as it is. In the case where the core material 21 is made of the molded body, air permeability can be obtained by drilling a plurality of holes in the plate surface. In addition, the core material 21 may not only have air permeability but may have a hollow portion in which air is accumulated.

As the surface material 22, a material constituted by a fiber material used as a normal surface material 22 can be used. In this case, the normal fiber material is not particularly limited, and for example, materials such as polyester, nylon, acrylic, wool, and natural leather can be used. Moreover, it is preferable to use the thing which gave the anti-fusing process in consideration of the use of using it in a motor vehicle.

The seat surface 2a of the chair body 2 configured as described above is, when the user is seated from the center front part to the rear part, the buttocks, the thigh rear surface, and the lower leg of the human body 4 of the user. A seat surface recessed portion 20a is provided in a portion that comes into contact with the rear surface of the portion. The seat surface recessed portion 20a is formed at a depth of about 30% to 95% of the total thickness of the seat surface 2a, although it varies depending on the thickness of the base seat surface 2a. In addition, the size of the seat surface recessed portion 20a is not limited to that provided on the portion that comes into contact with the buttocks, the rear surface of the thigh, and the rear surface of the lower leg, and corresponds to the buttocks of the human body 4. It may be provided in a portion that comes into contact with the portion, or may be provided in a portion that comes into contact with the buttocks and thigh rear surface of the human body 4.

  Further, the back surface 2b of the chair body 2 is formed in a back recessed portion 20b at a portion that comes into contact with the upper back of the human body 4 of the user when the user is seated from the middle to the upper part of the center. Is provided. The back recessed portion 20b is formed at a depth of about 30% to 95% of the total thickness of the back surface 2b, although it varies depending on the thickness of the back surface 2b as a base. In addition, the size of the back recessed portion 20b is not limited to that provided in the portion that comes into contact with the upper back of the human body 4, but the portion that comes into contact with the entire back of the human body 4, that is, It may be provided from the center lower part to the upper part of the back surface 2b.

  The seat surface moisture absorbing / releasing member 3a is formed in a size that matches the seat surface recessed portion 20a. The seat surface moisture absorbing / releasing member 3a is integrated with the seat body 2 while being provided in the seat surface recessed portion 20a. 2 can be brought into contact with the human body 4 of the user seated in 2.

  The back surface moisture absorbing / releasing member 3b is formed in a size that matches the back recessed portion 20b. The back surface moisture absorbing / releasing member 3b is integrated with the seat body 2 and is seated on the seat body 2 while being provided in the back recessed portion 20b. It is possible to make contact with the human body 4 of the user.

  The seat surface moisture absorbing / releasing member 3 a and the back surface moisture absorbing / releasing member 3 b are configured by providing a moisture absorbing / releasing layer 32 on the elastic layer 31 and covering the outer periphery thereof with a covering material 33.

  As the elastic layer 31, the same resin foam as that used for the core material 21, a resin net three-dimensional structure, and a resin nonwoven fabric can be used. In order to unify the feel of the entire sheet, it is preferable to match that used for the core material 21.

  As the moisture absorbing / releasing layer 32, moisture absorbing / releasing fibers having moisture absorbing / releasing properties equal to or more than that of wool, preferably three times or more that of wool, can be used. The moisture absorbing / releasing layer 32 is laminated on the elastic layer 31, and the back surface moisture absorbing / releasing member 3b is provided on the seat surface recessed portion 20a with the seat surface moisture absorbing / releasing member 3a and the back surface recessed portion 20b. The moisture absorption / release layer 32 is provided on the side in contact with the human body 4 through the covering material 33.

  Examples of the moisture absorbing / releasing fibers include moisture absorbing / releasing exothermic fibers having a fiber structure that has a very strong highly cross-linked structure, a small amorphous region for receiving a dye, and a very small gap. That is, such moisture-absorbing / releasing exothermic fibers generate moisture due to the reaction (hydration reaction) between the functional groups of the moisture-releasing / releasing exothermic fibers and water molecules when moisture is absorbed, and the entropy of water molecules. It generates heat based on change. Of these, the amount of heat generated based on the entropy change of water molecules becomes larger because the fiber itself does not undergo volume change during moisture absorption and release. Therefore, as described above, moisture-releasing and exothermic fibers that have a very strong and highly crosslinked structure and have a small amorphous region that accepts dyes are difficult to change in volume (swell) and generate heat during moisture absorption. Although the amount is large, the dyeability becomes extremely poor. As such moisture-absorbing / releasing exothermic fibers, base type and metal base type acrylic acid type fibers can be used. Specific examples include, for example, acrylate-based moisture-releasing and exothermic exothermic fibers (trade name Breath Thermo (N-38), trade name Ex (G-800) manufactured by Toyobo Co., Ltd., trade name Sunburner manufactured by Toho Rayon Co., Ltd.), etc. Is mentioned. As the acrylate-based moisture-absorbing / releasing exothermic fiber, a fiber formed of an AN-based polymer containing acrylonitrile (hereinafter referred to as AN) as a starting fiber is 40% by weight or more, preferably 50% by weight or more is used. The AN polymer may be an AN homopolymer or a copolymer of AN and another monomer. Other monomers include vinyl halides, vinylidene halides; acrylic acid esters; sulfonic acid-containing monomers such as methallyl sulfonic acid and p-styrene sulfonic acid and their salts; methacrylic acid, itaconic acid, and the like. Carboxylic acid-containing monomers and salts thereof; monomers such as acrylimide, styrene, and vinyl acetate can be mentioned, but are not particularly limited as long as they are monomers copolymerizable with AN.

A method of introducing a hydrazine compound as a crosslinking agent into the above acrylic fiber is applied. In this method, the increase in the nitrogen content is adjusted to 1.0 to 10.0% by weight, the concentration of the hydrazine compound is 5 to 60% by weight, and the temperature is 50 to 120 ° C. within 5 hours. Process. This method is industrially preferred. Here, the increase in the nitrogen content refers to the difference between the nitrogen content of the raw acrylic fiber and the nitrogen content of the acrylic fiber in a state where a hydrazine compound is introduced as a crosslinking agent. If this increase in nitrogen content is less than the above lower limit (1.0% by weight), it will not be possible to obtain fibers with finally satisfactory physical properties, and further properties such as flame retardancy and antibacterial properties. Can't get. Further, when the increase in the nitrogen content exceeds the upper limit (10.0% by weight), high moisture absorption / release properties cannot be obtained. Therefore, the hydrazine-based compound used here is not particularly limited as long as the increase in nitrogen content falls within the above range. Examples of such hydrazine-based compounds include a plurality of amine groups such as hydrazine hydrate, hydrazine sulfate, hydrazine hydrochloride, hydrazine bromate, hydrazine carbonate, and ethylenediamine, sulfate guanidine, guanidine hydrochloride, guanidine phosphate, and melamine. The compound to contain can be mentioned.

In this cross-linking step, the nitrazine group in a state in which the bidrazine-based compound remains without being cross-linked by the hydrolysis reaction is substantially eliminated, and 1.0 to 4.5 meq / g of the salt-type carboxyl group and the remainder A method of introducing an amide group into is applied. The method includes impregnating a basic aqueous solution such as alkane metal hydroxide and ammonia, or an aqueous solution of mineral acid such as nitric acid, sulfuric acid and hydrochloric acid, or heat-treating the raw material fibers in the aqueous solution. A method or a method of causing a hydrolysis reaction simultaneously with the introduction of the above-mentioned crosslinking agent can be used. In addition, when this hydrolysis reaction is hydrolysis with an acid, it is necessary to convert a carboxyl group into a salt form. Cellulosic fibers have been modified to increase the amount of hydrophilic groups in cellulose, or modified to increase the exothermic effect by replacing them with functional groups that easily generate heat due to a hydration reaction, such as carboxyl groups and hydroxyl groups. The use of materials is also conceivable.

The moisture absorption / release fiber is used in accordance with the moisture absorption amount required for one leg of the automobile seat 1, and the thickness of the moisture absorption / release layer 32 is determined by the amount used. For example, when the user who uses the automobile seat 1 is an adult, the insensitive excretion from the human body 4 is 900 ml / day (including exhalation). Therefore, if the moisture of 37.5 g / hr is treated, an increase in the humidity inside the vehicle can be prevented. Here, the moisture absorbing / releasing fiber constituting the moisture absorbing / releasing layer 32 absorbs moisture of about 15-20% of its own weight per hour by changing from a relative humidity of 40% to 80% under conditions of an environmental temperature of 20 degrees or more. When using what has the performance to do, it is possible to absorb moisture of 15 to 20 g per hour by using 100 g of raw cotton. Therefore, in order to absorb 37.5 g of moisture, if the moisture absorbing / releasing layer 32 using 187.5 g to 250 g of raw cotton is configured, an increase in the in-vehicle humidity can be prevented for one hour. If 30 minutes is the standard, about 100 g of raw cotton, which is half of that, may be used. Also, when considering the prevention of dew condensation in the vehicle, when the vehicle interior temperature is 20 degrees, the interior humidity is 80% RH, and the window temperature is 10 degrees, the absolute humidity of 20 degrees x 80% RH is 11.75 g / m ^3. Since the saturated water content at 10 degrees is 9.3 g / m ³ , if the difference of 2.45 g / m ³ of water is treated, dew condensation can be prevented. Therefore, if 20 g of the above-mentioned raw cotton is used, it is possible to absorb 3 g to 4 g of water per hour and prevent condensation in the vehicle. It is more preferable to form the moisture absorbing / releasing layer 32 based on the insensitive digestion of the human body 4.

In addition, the usage-amount of the above-mentioned moisture absorption / desorption fiber is required by the amount requested | required of the monopod of the vehicle seat 1, ie, the sum total of the seat surface moisture absorption / release member 3a and the back surface moisture absorption / release member 3b. In the case where only the seat surface moisture absorbing / releasing member 3a is provided on the vehicle seat 1, only the seat surface moisture absorbing / releasing member 3a satisfies the amount of moisture absorbing / releasing moisture used. When only the back surface moisture absorbing / releasing member 3b is provided, it is necessary to satisfy the use amount of the moisture absorbing / releasing fibers described above only by the back surface moisture absorbing / releasing member 3b.

Further, since the seat surface moisture absorbing / releasing member 3a and the back surface moisture absorbing / releasing member 3b are too thin with respect to the moisture absorbing / releasing layer 32, the comfort of the seat is reduced. 31 preferably has a thickness equal to or greater than that of the moisture absorbing / releasing layer 32, and more preferably has a thickness that is at least twice that of the moisture absorbing / releasing layer 32.

The covering material 33 is not particularly limited as long as it can cover the elastic layer 31 and the moisture absorbing / releasing layer 32 described above. For example, the covering material 33 is a surface material coated on the surface of the seat body 2. The same as 22 can be used. However, in the covering material 33, the portion in contact with the human body 4, that is, the exposed portion 330 to be sandwiched between the human body 4 and the moisture absorbing / releasing layer 32 absorbs and releases moisture due to insensitive digestion from the human body 4. A material having air permeability and moisture permeability is used so that the layer 32 can absorb moisture. In addition, the storage portion 331 stored in contact with the other recessed portion 20a of the seat surface or the recessed portion 20b on the back surface is air permeable and moisture permeable so that the absorbed moisture is not released to the seat body 2. Those that do not have are better. As what does not have air permeability and moisture permeability, for example, a resin film, artificial leather, and a resin film and fabric bonding material (2layer, 3layer) can be used.

In the above-described embodiment, the housing portion 331 of the covering material 33 is not permeable and moisture permeable, but at least a part of the housing portion 331 of the covering material 33 is the same as the exposed portion 330. As described above, a material having air permeability and moisture permeability is used, and a material having no air permeability and moisture permeability is used in the seat surface recessed portion 20a and the back surface recessed portion 20b which are in contact with the storage portion 331. You may do. Moreover, what does not have air permeability and moisture permeability is used for both the storage portion 331 of the covering material 33 and the seat recessed portion 20a and the back recessed portion 20b that come into contact with the storage portion 331. There may be. In this case, the seat recessed portion 20a and the back recessed portion 20b that do not have air permeability and moisture permeability may be formed by heat-sealing a resin sheet such as a vinyl chloride sheet, polyethylene, etc. It may be formed of a resin material.

The automobile seat 1 configured as described above is provided with a seat surface moisture absorbing / releasing member 3a and a back surface moisture absorbing / releasing member 3b at a portion where the user's human body 4 comes into contact when the user sits. Therefore, the seat surface moisture absorbing / releasing member 3a and the back surface moisture absorbing / releasing member 3b actively absorb moisture from the human body 4 due to insensitive steaming. Therefore, the user can sit comfortably without sweating with moisture due to insensitive digestion.

Also, in winter when the temperature is low, the saturated water vapor pressure in the air is low, so immediately after getting into the car, the interior space reaches the saturated water vapor pressure due to moisture from the insensitive vapor from the human body 4, and the window glass In the case of the automobile seat 1, the seat surface moisture absorbing / releasing member 3a and the back surface moisture absorbing / releasing member 3b actively absorb moisture due to insensitive moisture from the human body 4; Condensation of the glass can be prevented.

Further, the seat surface moisture absorbing / releasing member 3a and the back surface moisture absorbing / releasing member 3b use moisture absorbing / releasing fibers in the moisture absorbing / releasing layer 32 that comes into contact with the human body 4 through the covering material 33. Since the wet fiber generates heat due to heat of adsorption during moisture absorption, the user can obtain warmth by the heat of adsorption. Further, the moisture absorbing / releasing fiber actively collects dirt components and odor components together with moisture absorbing / releasing moisture, so that it is possible to purify and deodorize the interior of the vehicle.

Further, in the case of this automobile seat 1, the moisture due to insensitive digestion from the human body 4 of the user is actively absorbed and released from the seat surface moisture absorbing / releasing member 3a and the back surface moisture absorbing / releasing member 3b. The main body 2 can prevent the moisture from being absorbed and released and the adsorption of dirt components and odor components in the vehicle. Therefore, the seat body 2 can be kept hygienic for a long period of time and can be prevented from being deteriorated.

On the other hand, since the seat surface moisture absorbing / releasing member 3a and the back surface moisture absorbing / releasing member 3b actively and repeatedly adsorb dirt components and odor components when moisture is absorbed, these dirt components and odor components accumulate, It tends to be unsanitary than 2, and the deterioration is accelerated. Moreover, since they can be removed from the seat surface recessed portion 20a and the back surface recessed portion 20b of the seat body 2, they can be regenerated by washing after replacement or by replacing them with new ones.
Therefore, it becomes possible to actively collect and remove dirt components and odor components from the interior of the vehicle.

In the seat surface moisture absorbing / releasing member 3 a shown in FIG. 3, moisture absorbing / releasing fibers constituting the moisture absorbing / releasing layer 32 are provided in a cotton state, but the braided material 33 is knitted on the back surface of the exposed portion 330. It may be provided so as to constitute the moisture absorbing / releasing layer 32 in a state of being removed.

FIG. 4 shows a seat surface moisture absorbing / releasing member 3a suitable for use in the summer. In FIG. 4, the same members as those in FIG.

In the seat surface moisture absorbing / releasing member 3a, the elastic layer 31 and the moisture absorbing / releasing layer 32 are configured upside down, that is, the elastic layer 31 is provided on the moisture absorbing / releasing layer 32 and the outer periphery thereof is covered. It is configured to be covered with a material 33.

  In addition, in the covering material 33, a portion that is in contact with the human body 4, that is, an exposed portion 330 that is sandwiched between the human body 4 and the elastic layer 31, has air permeability and moisture permeability. Further, the elastic layer 31 to be sandwiched between the exposed portion 330 and the moisture absorbing / releasing layer 32 is also made of a material having air permeability and moisture permeability. As a result, moisture due to insensitive digestion from the human body 4 can be absorbed by the moisture absorbing / releasing layer 32 via the exposed portion 330 and the elastic layer 31. Further, the storage portion 331 other than the exposed portion 330 is made of a material that does not have air permeability and moisture permeability so as not to cause moisture absorbed to the seat body 2 to deteriorate the seat body 2. Yes.

In addition, this storage part 331 has air permeability and moisture permeability when the seat surface recessed portion 20a that is in contact with the storage part 331 uses a material that does not have air permeability and moisture permeability. You may have.

  The back surface moisture absorbing / releasing member 3b is also configured in the same manner as the seat surface moisture absorbing / releasing member 3a.

  The vehicle seat 1 using the seat surface moisture absorbing / releasing member 3a and the back surface moisture absorbing / releasing member 3b absorbs moisture due to insensitive moisture from the human body 4 through the exposed portion 331 of the covering material 33 and the elastic layer 31. The moisture release layer 32 can absorb moisture. At this time, since the elastic layer 31 is interposed more than the automobile seat 1 of the above-described embodiment, it is necessary to use the elastic layer 31 having sufficient air permeability and moisture permeability. Therefore, as the elastic layer 31, it is preferable to use a resin-made reticulated three-dimensional structure.

  According to the vehicle seat 1, excellent effects such as hygroscopicity can be obtained in the same manner as the vehicle seat 1 of the above-described embodiment. Further, since not only the covering material 33 but also the elastic layer 31 is interposed between the moisture absorbing / releasing layer 32 and the human body 4, it is possible to prevent the user from feeling hot due to heat generated during moisture absorption. Therefore, the automotive seed 1 using the seat surface moisture absorbing / releasing member 3a and the back surface moisture absorbing / releasing member 3b is suitable for use in summer.

FIG. 5 shows still another embodiment of the seat surface moisture absorbing / releasing member 3a.

That is, the seat surface moisture absorbing / releasing member 3a has no distinction between the elastic layer 31 and the moisture absorbing / releasing layer 32, and forms a composite layer 34 in which the elastic layer 31 and the moisture absorbing / releasing layer 32 are integrated. It has become.

In order to configure the composite layer 34, first, an elastic layer 31 made of a resinous net-like three-dimensional structure is prepared. And the moisture absorption / release fiber which comprises the moisture absorption / release layer 32 is made to adhere to a network-like three-dimensional structure, and the composite layer 34 is comprised. As a method of attaching, a method using a binder is generally used, and moisture absorbing / releasing fibers can be entangled with a network-like three-dimensional structure subjected to binder treatment in advance by air pressure. Also, melted fibers (generally polyester) are mixed (mixed) with moisture-absorbing / releasing fibers, entangled with the network three-dimensional structure with air, and then the molten fiber is dissolved by hot air treatment to integrate with the network three-dimensional structure. There is also a way to make it.
The integration method is not limited to the above.

  The back surface moisture absorbing / releasing member 3b is also configured in the same manner as the seat surface moisture absorbing / releasing member 3a.

  The vehicle seat 1 using the seat surface moisture absorbing / releasing member 3a and the back surface moisture absorbing / releasing member 3b absorbs moisture due to insensitive steam from the human body 4 in the composite layer 34 via the exposed portion 331 of the covering material 33. can do.

  Therefore, according to the vehicle seat 1, excellent effects such as hygroscopicity can be obtained in the same manner as the vehicle seat 1 of the above-described embodiment. Further, since the composite layer 34 in which the elastic layer 31 and the moisture absorbing / releasing layer 32 are combined is used, the heat felt by the user due to the heat generated during moisture absorption is the seat surface moisture absorbing / releasing member shown in FIG. 3a and the seat surface moisture absorbing / releasing member 3a shown in FIG. Therefore, it is not limited to seasons such as winter and summer, and is suitable for use throughout the year.

FIG. 6 shows still another embodiment of the seat surface moisture absorbing / releasing member 3a.

That is, the seat surface moisture absorbing / releasing member 3a is attached to the seat surface recessed portion 20a with the moisture absorbing / releasing layer 32 facing upward as shown in FIG. 6A with respect to the seat surface recessed portion 20a. In addition, as shown in FIG. 6 (b), it is formed so that it can be attached to the seat surface recessed portion 20a with the elastic layer 31 upside down. Therefore, the covering material 33 of the seat surface moisture absorbing / releasing member 3a has the exposed portion 330 exposed when the moisture absorbing / releasing layer 32 is mounted on the seat surface recessed portion 20a and the elastic layer 31 facing up. Thus, the exposed portion 330 exposed when attached to the seat surface recessed portion 20a is configured to have air permeability and moisture permeability. On the other hand, the seat surface recessed portion 20a is formed of a material having no air permeability and moisture permeability so that moisture absorbed by the seat surface moisture absorbing / releasing member 3a does not transfer to the seat body 2.

Similarly to the seat surface moisture absorbing / releasing member 3a, the back surface moisture absorbing / releasing member 3b is configured so that it can be used upside down, and the back recessed portion 20b is also air permeable and permeable like the seat surface recessed portion 20a. It is made of a material that is not wet.

According to the vehicle seat 1 using the seat surface moisture absorbing / releasing member 3a and the back surface moisture absorbing / releasing member 3b, the seat surface moisture absorbing / releasing member 3a and the back surface moisture absorbing / releasing member so that the moisture absorbing / releasing layer 32 is on the upper side. If 3b is used attached to the seat surface recessed portion 20a and the back surface recessed portion 20b, the moisture absorbing / releasing layer is similar to the seat surface moisture absorbing / releasing member 3a and back surface moisture absorbing / releasing member 3b shown in FIG. The heat of adsorption caused by the user 32 can feel the user warm and is suitable for winter. Further, if the seat surface moisture absorbing / releasing member 3a and the back surface moisture absorbing / releasing member 3b are attached to and used on the seat surface recessed portion 20a and the back surface recessed portion 20b so that the elastic layer 31 is on the top, FIG. As in the case of the seat surface moisture absorbing / releasing member 3a and the back surface moisture absorbing / releasing member 3b, it is possible to prevent the user from feeling hot due to heat generated during moisture absorption by the moisture absorbing / releasing layer 32, which is suitable for the summer. It will be a thing. Therefore, if the usage surface is selected and used according to the season, a comfortable automobile seat 1 can be obtained.

In each of the above-described embodiments, the seat surface moisture absorbing / releasing member 3a and the back surface moisture absorbing / releasing member 3b of the seat body 2 absorb the moisture from the human body 4 when they absorb moisture from the human body 4. It is preferable that moisture is absorbed while the moisture is sufficiently diffused throughout the moisture absorbing / releasing layer 32, rather than being locally absorbed by a part of the moisture absorbing / releasing layer 32 of the moisture releasing member 3b. Therefore, the seat main body 2 is configured to diffuse moisture throughout the hygroscopic layer 32 of the seat surface moisture absorbing / releasing member 3a and the back surface moisture absorbing / releasing member 3b. It is preferable that the air bearing the air is easily distributed. Specifically, as shown in FIG. 7, the seat body 2 is provided with a plurality of vent holes 23 communicating with the outside of the seat body 2 in the seat surface recessed portion 20 a to provide a plurality of air escape places. The seat layer moisture absorbing / releasing member 3a is configured such that the entire storage portion 331 is air permeable and permeable in the same manner as the exposed portion 330. The elastic layer 31 and the moisture absorbing / releasing layer 32 can diffuse moisture. It is conceivable to have a wet structure.

  However, when the entire storage portion 331 of the covering material 33 is made to have air permeability and moisture permeability, the portion of the surface material 22 facing the seat surface recessed portion 20a of the seat surface moisture absorbing / releasing member 3a is not A material that does not have air permeability and moisture permeability is used so that the seat body 2 does not absorb moisture and deteriorate due to moisture from the moisture releasing member 3a. Further, the covering material 33 is configured so that the entire storage portion 331 has air permeability and moisture permeability, but at least only a portion in contact with the vent hole 23 is configured to have air permeability and moisture permeability. It may be a thing. Although FIG. 7 describes the configuration of the seat surface moisture absorbing / releasing member 3a, the back surface moisture absorbing / releasing member 3b may be similarly configured.

According to this configuration, the seat surface moisture absorbing / releasing member 3a and the back surface moisture absorbing / releasing member 3b are released not only in the exposed portion 330 but also in the direction of the vent hole 23 while ensuring air permeability and moisture permeability. When moisture due to insensitive vaporization from the human body 4 of the user sitting on the automobile seat 1 is absorbed from the exposed portion 330 of the seat surface moisture absorbing / releasing member 3a and the back surface moisture absorbing / releasing member 3b, the moisture is an elastic layer. 31 and the moisture absorption / release layer 32 can be diffused.

The vent hole 23 is provided to secure the air escape space of the seat surface moisture absorbing / releasing member 3a and the back surface moisture absorbing / releasing member 3b, and is not in contact with the human body 4. Moisture due to insensitive digestion is absorbed from the exposed portion 330 of the seat surface moisture absorbing / releasing member 3a and the back surface moisture absorbing / releasing member 3b with which the human body 4 contacts. Accordingly, moisture due to insensitive steam from the human body 4 does not reach the vent hole 23, but the seat surface moisture absorbing / releasing member 3a and the back surface moisture absorbing / releasing member 3b are close to saturation and the humidity in the vehicle is low. In this case, it is conceivable that part of the moisture of the seat surface moisture absorbing / releasing member 3a and the back surface moisture absorbing / releasing member 3b is released from the vent hole 23. However, in such a case, most of the moisture is released from the exposed portion 330, and the amount of moisture passing through the vent hole 23 becomes a very small amount. The material 22 is not deteriorated or unsanitary. Therefore, the vent hole 23 may be formed by simply drilling the chair main body 2, but may be processed so that the inner peripheral surface of the vent hole 23 does not have air permeability or moisture permeability. Moreover, as shown in FIG. 7, as the structure which forms thinly the part of the core material 21 of the chair main body 2 which pierces the vent hole 23, and forms the seat surface moisture absorption / release member 3b and the back surface moisture absorption / release member 3b thickly. Also good. As the thin core material 21, a punched plate or mesh plate made of a steel plate or a resin plate, or a reticulated three-dimensional structure formed into a high-strength plate shape can be used.

  In each of the above-described embodiments, the seat body 2 prevents the moisture absorbed by the seat surface moisture absorbing / releasing member 3a and the back surface moisture absorbing / releasing member 3b from being absorbed by the seat surface moisture absorbing / releasing member 3a. When the back surface moisture absorbing / releasing member 3b absorbs moisture and becomes saturated, the seat surface moisture absorbing / releasing member 3b and the back surface moisture absorbing / releasing member 3b must be regenerated by releasing moisture from the exposed portion 330 of the covering material 33. In such a case, as a configuration for promoting the regeneration of the seat surface moisture absorbing / releasing member 3a and the back surface moisture absorbing / releasing member 3b, as shown in FIG. A ventilation path 24 communicating with the outside of the main body 2 may be provided, and a negative pressure may be applied to the ventilation path 24. For example, it is conceivable that the tip of the ventilation path 24 is connected to a venturi pipe 25 provided at a position where the wind pressure is received when the vehicle is running, and can be opened and closed by a valve 26.

In this case, the seat surface moisture-absorbing / releasing member 3a has air permeability and moisture permeability in order to allow the ventilation path 24, the elastic layer 31, and the moisture absorption / release layer 32 to communicate with the portion that comes into contact with the ventilation path 24. It is necessary to form the communication part 332 in advance. The communication portion 332 is provided in the portion of the covering material 33 that is in contact with the ventilation path 24. However, when the seat surface recessed portion 20a uses a material that does not have air permeability and moisture permeability, the seat surface is absorbed and released. The wet member 3 a is configured so that the entire covering material 33 has the air permeability and the moisture permeability in the same manner as the exposed portion 330 as long as at least the portion in contact with the ventilation path 24 has the air permeability and the moisture permeability. It may be a thing. Although FIG. 8 describes the configuration for promoting the regeneration of the seat surface moisture absorbing / releasing member 3a, the back surface moisture absorbing / releasing member 3b may be similarly configured.

According to this configuration, the valve 26 can be opened when the seat surface moisture absorbing / releasing member 3a absorbs moisture due to insensitive vaporization from the human body 4 of the user sitting on the automobile seat 1 and becomes saturated. For example, the venturi pipe 25 receives the wind pressure during traveling and the ventilation path 24 becomes negative pressure, and the elastic layer 31 of the seat surface moisture absorbing / releasing member 3a and the moisture of the moisture absorbing / releasing layer 32 are exhausted to the outside. It will be possible. Therefore, even when the seat surface moisture absorbing / releasing member 3a absorbs moisture and is saturated, these seat surface moisture absorbing / releasing members 3a can be regenerated. Even if the venturi tube 25 is not used, the tip of the ventilation path 24 is provided at a position where air flows on the surface of the body or chassis when the vehicle is running, as long as the negative pressure is generated. There may be. Further, a fan (not shown) may be provided in the ventilation path 24 so as to exhaust air. When exhausting using a fan (not shown), exhaust can be performed even when the vehicle is not running, and exhaust can be performed not only outside the vehicle but also inside the vehicle. However, since it is difficult to obtain a large effect when exhausting into the vehicle, it is preferable that the exhaust gas is switched so that it can be exhausted outside the vehicle. By configuring similarly, the back surface moisture absorbing / releasing member 3b can also be regenerated.

In each of the above-described embodiments, the vehicle seat 1 is provided with the seat surface moisture absorbing / releasing member 3a and the back surface moisture absorbing / releasing member 3b in the seat surface recessed portion 20a and the back surface recessed portion 20b of the seat body 2. Although it becomes a structure, the thing of the structure which provided only the seat surface moisture absorption / release member 3a in the seat surface recessed part 20a may be sufficient, and only the back surface moisture absorption / release member 3b is provided in the back surface recessed part 20b. It may be of a different configuration. However, in this case, the moisture absorbing / releasing layer 32 must be configured to satisfy a predetermined moisture absorbing / releasing property with only the seat surface moisture absorbing / releasing member 3a or the back surface moisture absorbing / releasing member 3b.

Further, as shown in FIG. 9, a seat recessed portion 200 in which a seat recessed portion 20 a and a back recessed portion 20 b are integrally configured is configured, and the seat recessed portion 200 is configured to absorb and absorb the seat surface. It may be configured to provide the seat moisture absorbing / releasing member 30 in which the moisture member 3a and the back surface moisture absorbing / releasing member 3b are integrally configured.

Further, in the present embodiment, the automobile seat 1 is provided with a seat surface recessed portion 20a and a back surface recessed portion 20b on the seat surface 2a and the back surface 2b, respectively, and the seat surface recessed portion 20a and the back surface recessed portion are provided. The seat surface moisture absorbing / releasing member 3a and the back surface moisture absorbing / releasing member 3b are provided in the portion 20b. However, as shown in FIG. 9, the headrest 2c is provided with a head recessed portion 20c, The head moisture absorbing / releasing member 3c may be provided so as to match the recessed portion 20c.

Further, in the present embodiment, the automobile seat 1 is described, but the same can be applied to seats for trains, buses, airplanes, and the like.
Further, it can be similarly applied to a bed for a bed, particularly a hospital bed.

1 Car seat (vehicle seat)
2 Seat body 21 Core material 22 Surface material 23 Vent hole 24 Ventilation path 2a Seat surface 2b Back surface 2c Headrest 20a Seat surface recessed portion 20b Back surface recessed portion 3a Seat surface moisture absorbing / releasing member 3b Back surface moisture absorbing / releasing member 31 Elastic layer 32 Moisture absorption / release layer 33 Covering material 330 Exposed part (ventilation surface)
332 Communication Department 4 Human Body

Claims (11)

A vehicle seat configured by covering a surface material on a surface of a core material constituting a seat body,
In at least one part of the seating surface, the back surface, and the headrest, a recessed portion is formed in a portion that comes into contact with the human body of the user,
The recessed portion is provided with a moisture absorbing / releasing member that is shaped so as to match the recessed portion and is detachable.
A vehicular seat, wherein the moisture absorbing / releasing member is in contact with a human body of the user in a state where the moisture absorbing / releasing member is provided in the recessed portion. The moisture absorbing / releasing member is provided with an moisture absorbing / releasing layer made of moisture absorbing / releasing material on an elastic layer configured to have elasticity by an elastic material, and the outer periphery thereof is covered with a covering material,
2. The vehicle seat according to claim 1, wherein a surface of the covering material that comes into contact with the human body through the moisture absorption / release layer is a ventilation surface having air permeability. The moisture absorbing / releasing member is configured to have elasticity by an elastic material on an moisture absorbing / releasing layer made of a moisture absorbing / releasing material, and an elastic ventilation layer configured to have air permeability is provided. The outer periphery of is covered with a coating material,
The vehicle seat according to claim 1, wherein a surface of the covering material that comes into contact with the human body through the elastic ventilation layer is a ventilation surface having air permeability. The moisture absorbing / releasing member is configured to have elasticity by an elastic material, and a moisture absorbing / releasing material is provided on the surface and inside of the elastic ventilation layer configured to have air permeability so that moisture absorption / desorption is imparted. The outer periphery of this moisture absorbing / releasing elastic ventilation layer is covered with a covering material,
2. The vehicle seat according to claim 1, wherein the covering material has a ventilation surface on the surface in contact with the human body. The moisture absorbing / releasing member is configured to have elasticity by an elastic material on an moisture absorbing / releasing layer made of a moisture absorbing / releasing material, and an elastic ventilation layer configured to have air permeability is provided. The outer periphery of is covered with a coating material,
The recessed portion is formed so as to be provided on either the elastic ventilation layer or the moisture absorption / release layer of the moisture absorption / release member,
The covering material has a breathable ventilation surface formed on the surface that comes into contact with the human body through the elastic ventilation layer when the moisture absorption / release member is provided in the recessed portion with the elastic ventilation layer as the surface, and also absorbs and releases the air. The vehicle-use vehicle according to claim 1, wherein when the moisture absorbing / releasing member is provided in the recessed portion with the moisture layer as a surface, a ventilation surface having air permeability is also formed on a surface contacting the human body through the moisture absorbing / releasing layer. seat. 6. The moisture absorbing / releasing material absorbs and releases moisture of 15% or more of its own weight by changing between 25 [deg.] C. 40% RH and 25 [deg.] C. 80% RH. Vehicle seat. The vehicular seat according to claim 6, wherein the moisture absorbing / releasing material is used in an amount of 100 g or more per seat. The vehicle according to any one of claims 1 to 7, wherein the recessed portion is formed of a film, a sheet, or a resin molded body that prevents moisture absorbed and released by the moisture absorbing / releasing member from reaching the seat body. Seat. The recessed portion is integrally provided from the seat surface to the back surface, and the moisture absorbing / releasing member is integrally formed from the seat surface to the back surface so as to match the integrated recessed portion. The vehicle seat according to any one of 8. The seat body is provided with a vent hole that communicates the recessed portion with the outside, and the moisture absorbing / releasing member is provided in the recessed portion with at least a covering material at a position facing the vent hole of the recessed portion. The part is configured to have air permeability and moisture permeability, communicated with the vent hole from the ventilation surface via the moisture absorption / release member, and moisture absorbed into the moisture absorption / release member from the ventilation surface diffuses into the moisture absorption member The vehicle seat according to any one of claims 1 to 9, wherein the vehicle seat is configured to be able to do so. The seat body is provided with a ventilation path that communicates the recessed portion with the outside.
In the state where the moisture absorbing / releasing member is provided in the recessed portion, a communication portion having air permeability and moisture permeability is provided in a portion of the covering material at a position facing the ventilation path of the recessed portion, and the ventilation path is negatively affected. 10. The vehicle seat according to any one of claims 1 to 9, wherein the moisture absorbed into the moisture absorbing / releasing member from the ventilation surface can be exhausted from the communicating portion through the ventilation path when the pressure is applied. .

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