JP2023112769A - ventilation mat and seat - Google Patents

Abstract

To provide a ventilation mat having the freedom of design capable of suppressing reduction of an air quantity from a ventilation source and applicable to various seats, and a seat including the same.SOLUTION: A ventilation mat 1 is configured such that a ventilation mat body 10 has a first base material 12 having an air-permeable three-dimensional structure, a first barrier material 11 of no substantial air-permeability which surrounds the first base material 12, and ventilation parts 13 and 15 having no first barrier material 11; a ventilation guide 21 has a second base material 22 having an air-permeable three-dimensional structure and a second barrier material 21 of no substantial air-permeability which surrounds the second base material 22; a part of the second base material 22 fits to a notch formed in the first base material 12; the first base material 12 and the second base material 22 communicate with each other to allow air circulation; and a part not fitted to the notch of the ventilation guide 20 extends in a direction in which it at least partially overlaps the ventilation mat body 10. The seat includes the ventilation mat 1.SELECTED DRAWING: Figure 1

Description

The present invention relates to, for example, a seat installed in an automobile or the like and a ventilation mat used therefor, and more particularly to a seat that can be configured to be suitable for blowing air through the seat.

For example, when a person sits on a seat of an automobile for a long period of time, especially under conditions of high ambient temperature and humidity, the surface of the seat and the part that comes into contact with the human body become "stuffy" or "sticky". Since this "stuffiness" and "sticky feeling" impair the comfort of the seated person, various countermeasures against such problems have been conventionally studied.

As one of such studies, for example, proposals such as those in Patent Documents 1 and 2 have been made by the applicant of this patent. Patent Documents 1 and 2 show schematic cross-sectional views of seats in which a ventilation mat is incorporated as a blower. A ventilation mat consists of a ventilation mat body and a ventilation guide. The ventilation mat body consists of a base material with a breathable three-dimensional structure and side barriers made of a non-breathable material that covers the base material. The ventilation guide consists of a base material having an air-permeable three-dimensional structure and a tube made of a non-air-permeable material covering the base material. Air sent from an air source such as a fan passes through the ventilation guide and the base material of the ventilation mat body, is blown out from the ventilation cover covering one side of the base material of the ventilation mat body, and is blown to the seated person. It is a mode to let you. This ventilation eliminates the "stuffiness" and "stickiness" of the seated person. Also, as related techniques, for example, Patent Documents 3 to 8 can be cited.

International Publication WO2018/221422: Kurabe JP 2020-32924: Kurabe JP-A-2007-84039: Bridgestone JP 2017-71368: Bridgestone Patent No. 4107033: Matsushita Electric Industrial Japanese Patent No. 4125721: W.W. E. T. Japanese Patent No. 4999455: Kurabe Patent No. 5430085: Kurabe

In general, the air blowing source connected to the ventilation mat is placed under the seat, and this air blowing source and the main body of the ventilation mat placed on the seat surface side of the seat are connected by a ventilation guide. It becomes a mode. Here, the longer the ventilation guide, the more the airflow from the airflow source is attenuated, so in order to secure as much airflow as possible, it is desirable to connect the ventilation mat body and the airflow source at the shortest distance. ing. Also, the seat has various forms depending on the application, characteristics, and design of the vehicle. For example, a seat with both sides raised greatly, a seat called an ottoman with the front part of the seat flipped up and extended so that you can rest with your legs extended, and a seat cover and a combination of a plurality of suspending portions for fixing to the cushion material. Ventilation mats are desired to have a degree of freedom in design so that they can be applied to various types of seats.

The present invention was made in order to solve such problems of the prior art, and the purpose thereof is to suppress the attenuation of the air volume from the air blow source and to provide freedom of design that can be applied to various seat modes. To provide a ventilation mat and a seat incorporating it.

In order to achieve the above object, a ventilation mat according to the present invention has a ventilation mat body and a ventilation guide connected to the ventilation mat body, wherein the ventilation mat body is a three-dimensional air-permeable a first base material having a structure, a first barrier material covering the periphery of the first base material and having substantially no air permeability, and a ventilation part without the first barrier material, The ventilation guide includes: a second base material having an air-permeable three-dimensional structure; and a second barrier material that surrounds the second base material and has substantially no air permeability. A notch is formed in one base material, a part of the second base material is fitted in the notch part, and the first base material and the second base material are communicated so that air can be circulated. The ventilation part is formed on one main surface of the ventilation mat body, and the part of the other main surface of the ventilation mat body that is not fitted into the cutout of the ventilation guide is the ventilation part. It extends in a direction overlapping at least a part of the mat body.
Further, when the direction perpendicular to the ventilation direction of the ventilation guide and parallel to the main surface of the first base material is defined as the width, the portion of the ventilation guide that is fitted into the notch and the notch It is conceivable that the width of the second base material is 1/3 or more and 1/2 or less of the width of the first base material at the boundary of the portions that are not fitted.
Further, it is conceivable that the ventilation part is composed of an air-permeable cover having air permeability and an opening formed in the air-permeable cover.
In addition, it is conceivable that a plurality of openings are formed, and that the openings become larger as they become farther from the end of the ventilation guide on the side of the main body of the ventilation mat.
Also, it is conceivable that the first barrier material is composed of a sheet of non-breathable film.
Further, it is conceivable that the ventilation guide has a portion sandwiched by the first barrier material at the portion fitted in the notch.
Moreover, it is conceivable that the first barrier material, the second barrier material, the first base material, and the second base material are fixed by sewing.
Moreover, it is conceivable that the first barrier material, the second barrier material, the first base material, the second base material, and the air-permeable cover are fixed by sewing.
Also, one or both of the first barrier material and the second barrier material may be a laminate of a non-breathable film and a cloth body.
Moreover, it is conceivable that the cloth body is a nonwoven fabric.
Also, it is conceivable that the second base material has higher air permeability than the first base material.
A seat according to the present invention includes a seat cushion material, a skin cover, and the ventilation mat, wherein the seat cushion material is covered with the skin cover, and a through hole is formed in the seat cushion material. The ventilation guide is arranged in the through hole, and the ventilation mat main body is arranged between the seat cushion material and the upholstery cover.

According to the ventilation mat according to the present invention, the ventilation guide can be connected at any point on the main surface of the ventilation mat body. Therefore, the ventilation mat main body and the air blowing source can be connected with the shortest distance, and the attenuation of the air volume can be suppressed. In addition, since the position where the ventilation guide is connected can be adjusted, it can be easily applied to various types of seats.

1 is a schematic diagram of a ventilation mat of the present invention; FIG. It is a figure explaining the base-material shape of the ventilation mat of this invention. It is a perspective view explaining the assembly process of the ventilation mat of this invention. 1 is a schematic diagram of an automobile seat on which the ventilation mat of the present invention is mounted; FIG. 1 is a schematic cross-sectional view of an automobile seat on which the ventilation mat of the present invention is mounted; FIG.

Embodiments of the present invention will be described below with reference to the drawings. The ventilation mat described below is provided on at least one of the seat surface and the backrest of an automobile seat. Further, the ventilation mat according to the present invention is installed so as to be sandwiched between the cushion material of the automobile seat and the skin cover covering the cushion material. In addition, the ventilation mat is provided with a fan as an air blowing source, and the fan sucks air from the ventilation mat or causes air to flow into the ventilation mat.

In the following description, with the ventilation mat installed on the automobile seat, the surface located on the side of the seat cover, ie, the seat surface, is referred to as the front surface, and the surface located on the cushion material side of the vehicle seat is referred to as the back surface.

FIG. 1 shows a schematic diagram of a ventilation mat 1 according to this embodiment. 1(a) shows a top view of the ventilation mat 1, and FIG. 1(b) shows a bottom view of the ventilation mat 1. FIG. The top view (FIG. 1(a)) shows the configuration of the surface side of the ventilation mat 1 according to this embodiment, and the bottom view (FIG. 1(b)) shows the bench according to this embodiment. 1 shows the configuration of the back side of the ration mat 1. FIG.

As shown in FIG. 1, the ventilation mat 1 according to this embodiment has a ventilation mat body 10 and a ventilation guide 20. As shown in FIG. Such a ventilation mat 1 is formed by providing a ventilation guide 20 with a fan mounting hole 24 at one end and connecting the other end to the ventilation mat body 10 .

The ventilation mat main body 10 may include, for example, a first base material 12, a first barrier material 11, and an air-permeable cover 13. As shown in FIG. In addition, it is conceivable that an opening 15 is formed in the air-permeable cover. The first base material 12 in the present embodiment functions as a spacer and is a sheet having a three-dimensional structure with air permeability. The first base material 12 is, for example, a 3D mesh sheet in which fibers are three-dimensionally woven. When cutting this 3D mesh sheet into a predetermined shape, it is preferable to process it by laser fusion cutting. As a result, it is possible to prevent the occurrence of fiber waste due to fraying of the end face.

The first barrier material 11 has lower air permeability than the air-permeable cover 13 and substantially no air-permeability, and covers the periphery of the first base material 12 . The barrier material 11 is adhered to the first base material 12 with, for example, an adhesive or a pressure-sensitive adhesive, or is sewn or welded to the first base material 12 so as to cover the outer circumference of the first base material 12 . cover the In particular, sewing is preferable because the adhesive strength does not decrease due to thermal or aging effects.

The air-permeable cover 13 is made of cloth, has air permeability as a whole, and covers the surface of the first base material 12 . The area of the first base material 12 covered by the air-permeable cover 13 is the area of the first base material 12 that is not covered with the barrier material 11 .

The air-permeable cover 13 is preferably made of, for example, a fibrous material such as a non-woven fabric and has high air permeability. On the other hand, for the first barrier material 11, a material with lower breathability than the breathable cover 13 is selected. In this embodiment, a polyurethane film reinforced with polyester fibers is used as the first barrier material 11 .

In this embodiment, the air-permeable cover 13 is formed with openings 15a, 15b and 15c. An opening 15a, an opening 15b, and an opening 15c are formed in the order farther from the end of the ventilation guide 20 on the side of the ventilation mat body 11, and the sizes of the openings are arranged in descending order. It is an opening 15c. A ventilation part is constituted by the ventilation cover 13 and the openings 15a, 15b and 15c.

The ventilation guide 20 is composed of a second barrier material 21 made of an air-impermeable material and a second base material 22 having an air-permeable three-dimensional structure, and a ventilation path is formed inside. For the second base material 22, the same material as the first base material 12, for example, a 3D mesh sheet in which fibers are three-dimensionally woven can be used. Moreover, the same material as the first barrier material 11 can be used for the second barrier material 21 . In this embodiment, as the second barrier material 21, a laminate of a polyethylene film and a nonwoven fabric made of flame-retardant polyester fiber is used. The second barrier material 21 was arranged so that the polyethylene film was on the second base material 22 side.

One end of the ventilation guide 20 is provided with an opening so that the second base material 22 is exposed. A mold made of a plastic material is fitted into this opening to form a fan mounting hole 24 . The other end of the ventilation guide 20 is inserted into the connection hole 17 provided in the first barrier material 11 . Further, as shown in FIG. 2, the first base member 12 is formed with a notch portion 16, and the notch portion 16 is fitted with the ventilation guide 20 (the second base member 22).

Here, the method of assembling the ventilation mat 1 will be described in more detail. FIG. 3 shows a diagram for explaining a method of assembling the ventilation mat 1 according to this embodiment. In FIG. 3, for the sake of convenience, the air blowing direction in the ventilation guide 20 (the direction from the upper right to the lower left in FIG. 3) is the length direction, and the air blowing direction in the ventilation guide 20 is perpendicular to the main surface of the ventilation mat body 10. The parallel direction (upper left to lower right direction in FIG. 3) may be referred to as the width direction, and the direction perpendicular to the main surface of the ventilation mat body 10 (vertical direction in FIG. 3) may be referred to as the thickness direction. . 3, the upper side is the back surface of the ventilation mat 1, and the lower side is the front surface of the ventilation mat 1. As shown in FIG.

First, a sheet of first barrier material 11 having a shape as shown in FIG. Next, as shown in FIG. 3B, one end of the ventilation guide 20 is inserted into the connection hole 17 formed in the first barrier material 11 . The second barrier material 21 is removed from the portion of the ventilation guide 20 that is inserted into the connection hole 17, and the second base member 22 is exposed. The exposed portion of the second base material 22 is slightly shorter than the length of the notch 16 in the first base material 12 . In this state, as shown in FIG. 3(c), the first barrier material 11 is bent along the outer periphery of the first base material 12 in the width direction, and at the same time, one end of the ventilation guide 20 is cut into the first base material 12. The part 16 is fitted. Next, as shown in FIG. 3(d), the first barrier material 11 is folded along the outer circumference of the first base material 12 in the longitudinal direction. At the same time, as shown in FIG. 3(e), the first barrier material 11 is bent along the outer circumference of the first base material 12 in the width direction. At this time, since the width of the tip of the first barrier material 11 is approximately the same as the width of the ventilation guide 20, the tip of the first barrier material 11 is placed between the ventilation guide 20 and the first base material 12. into the connection hole 17 as shown. Then, as shown in FIG. 3( f ), the outer periphery of the first base material 12 is fixed by sewing with the sewing thread 30 , and the portion slightly on the tip side of the connection hole 17 (that is, the notch portion 16 of the ventilation guide 20 is fitted). A portion close to one end of the joined side) is also fixed with the sewing thread 30 by sewing. Thus, the ventilation mat 1 is assembled.

In this embodiment, the ventilation guide 20 extends in a direction overlapping at least a part of the ventilation mat main body 10 . With such a connection structure between the ventilation guide 20 and the ventilation mat main body 10 , the ventilation guide 20 can be connected at any point on the main surface of the ventilation mat main body 10 . Therefore, the ventilation mat main body 10 and the air blowing source (fan 40) can be connected with the shortest distance, and attenuation of the air volume can be suppressed. In addition, since the position where the ventilation guide 20 is connected can be adjusted as desired, it can be easily applied to various types of seats. The ventilation mat 1 of the present invention can be used with the ventilation guide 20 bent. Before doing so, that is, in a state in which the ventilation guide 20 is arranged in a plane without being bent, the determination is made.

Moreover, the first barrier material 11, the second barrier material 21, the first base material 12, the second base material 22 and the breathable cover 13 are mechanically fixed by sewing. For example, if it is fixed by adhesive or heat-sealing, the adhesive or heat-sealing part may deteriorate and peel off due to the high temperature environment or the passage of a long time. never. Note that the first barrier material 11, the second barrier material 21, the first base material 12, the second base material 22, and the breathable cover 13 do not all need to be fixed by one sewing (sewing thread 30). It suffices if each is individually fixed by the sewing thread. Of course, it is conceivable to fix them not only by sewing, but also by combining them with an adhesive or a heat-sealed portion.

Further, as shown in FIG. 3(e), in this embodiment, the tip of the first barrier material 11 is inserted into the connection hole 17 so as to be between the ventilation guide 20 and the first base material 12. . Then, as shown in FIG. 3( f ), the ventilation guide 20 (the second barrier material 21 and the second base material 22 ) is arranged between the tip of the first barrier material 11 and other parts of the first barrier material 11 . It is fixed by a sewing thread 30 in a sandwiched state. Therefore, leakage of air from the vicinity of the connection hole 17 can be further minimized.

Further, in the present embodiment, the width of the second base material 22 is 1/1 of the width of the first base material 12 at the boundary between the portion of the ventilation guide 20 that is fitted in the notch 16 and the portion that is not fitted. 2. As a result, the air blown from the ventilation guide 20 passes through the side of the ventilation guide 20 and spreads over the entire first base material 12, and the end of the first base material 12 is also sufficiently blown.

Next, a description will be given of how the ventilation mat 1 according to the present embodiment is incorporated into an automobile seat. 4 and 5 show schematic diagrams of an automobile seat on which the ventilation mat 1 according to the present embodiment is mounted. An automobile seat 60 shown in FIGS. 4 and 5 has a backrest 61 and a seat surface 62 , and the ventilation mat according to the present embodiment is installed on the seat surface 62 . Since the ventilation mat 1 according to the present embodiment is actually installed under the skin cover 65 , it is mounted on the automobile seat 60 while being hidden by the skin cover 65 . Therefore, in the schematic diagram shown in FIG. 4, the portion of the automobile seat 60 where the ventilation mat 1 is installed is indicated by a hatched pattern. The ventilation guide 20 is routed so that the fan mounting hole 24 extends to the rear side of the automobile seat 60 . In this embodiment, as shown in FIG. 5, the ventilation guide 20 is arranged in the through hole formed in the cushion material 64, and the fan 40 serving as the air blowing source and the ventilation mat body 10 are connected. It will happen. The fan 40 is attached to the seat frame 67 with a blower attachment 46 and is attached to the fan attachment hole 24 of the ventilation guide 20 .

In this embodiment, the ventilation guide 20 is bent in a direction perpendicular to the main surface of the ventilation mat main body 10 in order to connect to the air blowing source, and the bent portion is formed in the cushion material 64. It is inserted through the through hole, and is connected and fixed to the fan 40 serving as the air blowing source at the further portion. With the ventilation mat 1 according to the present invention, the bent portion of the ventilation guide 20 is surrounded by the first base material 12 and the second base material 22 . As a result, the peripheries of the through holes formed in the cushion material 64 are surrounded and supported by the first base material 12 and the second base material 22, so that the seated occupant is less likely to feel uncomfortable due to the through holes.

In addition, when the ventilation guide 20 is bent and used, if a material having a strong repulsive force is used as the second base material 22, there is a concern that the vicinity of the bent portion may float due to the repulsive force. Here, in the present embodiment, since the thread 30 is also fixed in the vicinity of the connection hole 17 , the thread 30 serves as a fulcrum, making the ventilation guide 20 easier to bend. As a result, even when the ventilation guide 20 is bent, it is possible to prevent the vicinity of the bent portion from being lifted up.

In addition, since the ventilation mat 1 according to the present embodiment is formed by combining parts with simple shapes, the material utilization efficiency of the components of the ventilation mat 1 is high (for example, one material occupies high ratio of usable material to waste material). That is, the ventilation mat 1 according to the present embodiment can reduce the manufacturing cost by increasing the utilization efficiency of materials.

When incorporating the ventilation mat 1 according to the present invention into the automobile seat 60, for example, it is conceivable to fix the ventilation mat main body 10 and the like on the cushion material 64 with an adhesive tape or the like. In addition to this aspect, for example, when molding the cushioning material 64, the ventilation mat main body 10 or the like is placed in advance in a molding die, and after pouring the material of the cushioning material into it, the material of the cushioning material may be foamed and cured. In this case, the ventilation mat main body 1 and the like and the cushioning material 64 are securely fixed to prevent displacement. Such a construction method is common in the technical field of car seat heaters, and for example, Patent Document 5 can be referred to.

It should be noted that the present invention is not limited to the above embodiments, and can be modified as appropriate without departing from the scope of the invention. For example, the ventilation mat according to the present invention can be arranged not on the seat surface 62 side but on the backrest 61 side, or can be arranged on both the seat surface 62 side and the backrest 61 side.

In this embodiment, there is only one ventilation mat main body, but for example, a first ventilation mat main body and a second ventilation mat main body may be connected by a connection mat. This connection mat can have the same structure as the ventilation mat main body. Of course, the number of connection mats may be one, or two or more. Also, the number of ventilation mat bodies may be two or more.

As the first barrier material 11 and the second barrier material, for example, nonwoven fabric, spunbond nonwoven fabric, woven fabric, film, and rubberized fabric can be used. Here, nonwoven fabrics, spunbond nonwoven fabrics and woven fabrics can be made of aramid fibers, glass fibers, cellulose fibers, nylon fibers, vinylon fibers, acrylic fibers, polyester fibers, polyethylene fibers, polypropylene, polyolefin fibers, rayon fibers, and the like. . Materials for the film include polyethylene, polyvinyl, polypropylene, PET, vinyl chloride, polyurethane, various thermoplastic elastomers, and the like. Films reinforced with various fibers may also be used. Rubberized fabrics are fabrics that have undergone a process that makes them airtight. Among these materials, the first barrier material 11 and the second barrier material 12 are preferably made of a laminate of an impermeable film and a cloth body. The cloth body here includes, for example, a woven fabric, a spunbond nonwoven fabric, a woven fabric, and a rubberized fabric, and a flame-retardant nonwoven fabric is particularly preferable. Since one or both of the first barrier material 11 and the second barrier material 12 is a laminate of an impermeable film and a cloth body, the breaking strength and abrasion resistance are improved, and abrasion and breakage due to friction are improved. And cracks can be prevented. In addition, due to the presence of the cloth body, even when it rubs against other materials, no abnormal noise is generated. Among fabric bodies, non-woven fabric can best obtain such an effect. Of the first barrier material 11 and the second barrier material 12, the one that receives the stronger frictional force may be a laminate of a non-breathable film and a cloth body. and a cloth body may be laminated.

In addition, when the first barrier material 11 and the second barrier material 21 are formed by laminating a non-breathable film and a cloth body, the side facing the base material (first base material 12, second base material 22) is non-adhesive. It is preferable that it is a breathable film. As a result, since the outer surface side becomes a cloth body, the ventilation mat main body and the ventilation guide are resistant to friction when they are rubbed against other members, and abnormal noise can be prevented. On the other hand, it is also conceivable that the side facing the base material (first base material 12, second base material 22) is a cloth body. In this case, the base material (the first base material 12, the second base material 22) is resistant to friction when rubbed against the base material, and noise can be prevented. Regarding the first barrier material 11 and the second barrier material 21, it is most preferable if the impermeable film is sandwiched between two cloth bodies and laminated, because it can cope with the friction with the inner and outer members.

Further, as described above, the fan 40 is attached to the ventilation guide 20 . In order to prevent air leakage from the mounting portion, a cushioning connection member (not shown) such as a rubber material or a foamed resin material is normally used, and the connection member is compressed. The ventilation guide 20 and the fan 40 are attached in this state. Here, for the second barrier material 21, if a non-breathable film and a cloth body are laminated such that the outer side is a cloth body, this connection member can be omitted. That is, the cloth body has sufficient cushioning properties, and can block air leakage by being compressed. Therefore, even if there is no connecting member, the ventilation guide 20 can prevent air from leaking from the mounting portion of the fan 40 .

As the first base material 12 and the second base material 22, for example, a three-dimensional knitted fabric such as a double raschel or a 3D mesh sheet in which fibers are three-dimensionally woven, a structure in which fibers are three-dimensionally intertwined in a complicated manner, A foam material (sponge) having open cells, an array of rubber tubes, or the like can be used. Examples of three-dimensional knitted fabrics include Fusion (registered trademark) manufactured by Asahi Kasei Corporation, Swing Net (registered trademark) manufactured by Suminoe Textile Co., Ltd., 3mesh (registered trademark) manufactured by Mueller Textile Co., Ltd., and Cubic Eye (registered trademark) manufactured by Unitika. etc. Examples of structures formed by three-dimensionally entwined fibers include Breath Air (registered trademark) manufactured by Toyobo Co., Ltd., and the like. Materials such as urethane, EPDM, chloroprene, isoprene, silicone, and various thermoplastic elastomers are used as the foam material having open cells and the material constituting the rubber tube. The first base material 12 and the second base material 22 may have directionality such as a direction in which ventilation is easy and a direction in which ventilation is difficult. For example, in the case of a three-dimensional knitted fabric, the direction in which the density of fibers per cross section increases intermittently (the number of fibers increases) or the direction in which the density of fibers decreases continuously (the number of fibers There is such a thing that the direction is formed such that it has a portion where the In this case, the lower the fiber density (the smaller the number of fibers), the easier the ventilation. When using the first base material 12 or the second base material 22 having such directionality, the air flow direction, which is the direction in which ventilation is actually performed, is different from that in the first base material 12 or the second base material 22. It is preferably the same direction as the direction in which air is easily ventilated, for example, the direction in which there is a portion where the fiber density is continuously low (the number of fibers is decreased).

Moreover, since the first base material 12 is arranged under the seated person as a component of the ventilation mat main body 10, it preferably has durability to withstand the pressure of sitting. On the other hand, since the second base member 22 is a component of the ventilation guide 20 and is not subject to much pressure, it is preferable that air permeability is emphasized so as not to attenuate the blown air. Therefore, it is preferable that the second base material 22 has higher air permeability than the first base material 12 .

The shape of the notch 16 in the first base material 12 is arbitrary, and may be not only rectangular as in the present embodiment, but also circular, polygonal, or a combination thereof. It is preferable that the shape of the notch portion 16 is adapted to the shape of one end portion of the second base material 22 to be fitted. In order to properly align the position when fitting the second base material 22, the shape of the notch 16 and one end of the second base material 22 may be a stepped shape or the like so that they are compatible with each other. Conceivable. Moreover, the position of the notch 16 in the first base material 12 is also arbitrary. It can be appropriately set according to the mounting position of the fan 40, the shape of the seat, or the position of the through hole formed in the cushion material of the seat. In the present embodiment, the cutout portion 16 is formed at a portion in contact with the outer periphery of the first base material 12. For example, the vicinity of the central portion of the first base material 12 is punched to form the cutout portion. 16 may also be considered.

In the present embodiment, the width of the second base member 22 at the boundary between the portion of the ventilation guide 20 that is fitted into the cutout portion 16 and the portion that is not fitted (hereinafter, may be simply referred to as the boundary) It is 1/2 of the width of one substrate 12 . If the width of the second base material 22 at this boundary portion is too large relative to the width of the first base material 12 , the air from the ventilation guides 20 will be difficult to reach the entire first base material 12 . The air blown from the ventilation guide 20 passes through the first base material 12 located between the ventilation guide 20 and the first barrier material 11 from the notch 16 and spreads over the entire first base material 12 . If the width of the second base member 22 is too large, the portion through which the blown air passes becomes narrow. Therefore, the width of the second base material 22 at the border is preferably 2/3 or less, particularly preferably 1/2 or less, of the width of the first base material 12 . On the other hand, if the width of the second base material 22 at this border portion is too small with respect to the width of the first base material 12, the pressure loss will increase and the air from the air blow source will not be sufficiently blown. end up Therefore, the width of the second base material 22 at the border is preferably 1/4 or more, particularly preferably 1/3 or more, of the width of the first base material 12 .

In the present embodiment, an example of the ventilation part is formed of the air-permeable cover 13 and the openings 15a, 15b, and 15c formed in the air-permeable cover 13, but the invention is limited to this. never. For example, it is possible to consider a case in which the air-permeable cover 13 has no openings, and a case in which the air-permeable cover 13 is not used and the portion surrounded by the first barrier material 12 is all openings. be done. Further, the position, shape and number of the openings are arbitrary, and may be appropriately designed according to the required characteristics. In the present embodiment, the openings 15a, 15b, and 15c are formed in order of distance from the end of the ventilation guide 20 on the side of the ventilation mat body 11, and the size of the openings is in order of size. A portion 15a, an opening 15b, and an opening 15c. In this way, when forming a plurality of openings, the positions and sizes of the openings are designed so that the position and size of the openings increase as the distance from the end of the ventilation guide 20 on the side of the ventilation mat body 10 increases. preferably. As a result, it is possible to uniformize the amount of air blown from each opening.

In addition, the ventilation cover 13 may not be provided on the back surface of the ventilation mat body 10, and the portion surrounded by the first barrier material 11 may be an opening surface. It is also conceivable that the material 12 is exposed.

Further, in the present embodiment, the air is blown from the air blow source, but the present invention can be applied in both the form of blowing air from the air blow source and the form of sucking in air from the air blow source. can.

As described in detail above, the ventilation mat of the present invention suppresses the attenuation of the air volume from the air blowing source and has a degree of freedom in design that can be applied to various seat modes. In addition to automobile seats, its applications include, for example, vehicle seats such as motorcycles and railway vehicles, child seats, seats for heavy machinery for civil engineering and construction, seats for ships and aircraft, and seats for ferris wheels in amusement parks. , spectator seats in various stadiums, viewing seats in theaters and movie theaters, benches installed in stations, theme parks, outdoor parks, etc., sofas and legless chairs used in homes and offices, barber shop chairs , medical chairs used in various medical institutions. Moreover, it can be widely applied not only to seats but also to beds, strollers, and the like.

1 Ventilation Mat 10 Ventilation Mat Main Body 11 First Barrier Material 12 First Base Material 13 Breathable Cover 15a, 15b, 15c Opening 16 Notch 17 Connection Hole 20 Ventilation Guide 21 Second Barrier Material 22 Second Base Material 24 Fan mounting hole 30 Sewing thread 40 Fan 60 Car seat 61 Backrest 62 Seat surface 64 Cushion material 65 Skin cover

Claims (12)

The ventilation mat body,
a ventilation guide connected to the ventilation mat body,
The ventilation mat body is
a first base material having an air-permeable three-dimensional structure;
a first barrier material that surrounds the first base material and has substantially no air permeability;
a ventilation part in which the first barrier material does not exist,
The ventilation guide is
a second base material having an air-permeable three-dimensional structure;
a second barrier material that surrounds the second base material and has substantially no air permeability;
A notch is formed in the first base material, and a part of the second base material is fitted into the notch part, and the first base material and the second base material communicate with each other so that air can be circulated. has been
The ventilation part is formed on one main surface of the ventilation mat main body, and the ventilation guide extends in a direction at least partially overlapping the ventilation mat main body on the other main surface of the ventilation mat main body. The ventilation mat that has been issued. When the direction perpendicular to the ventilation direction of the ventilation guide and parallel to the main surface of the first base material is defined as the width, the part of the ventilation guide that fits into the notch and the part that fits into the notch 2. The ventilation mat according to claim 1, wherein the width of the second base material is 1/4 or more and 2/3 or less of the width of the first base material at the boundary of the non-bonded portion. 2. The ventilation mat according to claim 1, wherein said ventilation part comprises an air-permeable cover and an opening formed in said air-permeable cover. 4. The ventilation mat according to claim 3, wherein a plurality of said openings are formed, and said openings become larger as they become farther from the end of said ventilation guide on said ventilation mat main body side. 2. A ventilation mat according to claim 1, wherein said first barrier material comprises a sheet of non-breathable film. 6. The ventilation mat according to claim 5, wherein the ventilation guide has a portion sandwiched by the first barrier material at the portion fitted in the notch. 2. The ventilation mat according to claim 1, wherein said first barrier material, said second barrier material, said first base material and said second base material are fixed by sewing. 4. The ventilation mat according to claim 3, wherein said first barrier material, said second barrier material, said first base material, said second base material and said breathable cover are fixed by sewing. 2. The ventilation mat according to claim 1, wherein one or both of said first barrier material and said second barrier material are a laminate of a non-breathable film and a cloth body. 10. The ventilation mat according to claim 9, wherein said cloth body is non-woven fabric. 2. The ventilation mat according to claim 1, wherein said second base material is more breathable than said first base material. A seat cushion material, a skin cover, and the ventilation mat according to any one of claims 1 to 11,
The seat cushion material is covered with the skin cover,
A through hole is formed in the seat cushion material,
The ventilation guide is arranged in the through hole,
A seat in which the ventilation mat main body is arranged between the seat cushion material and the skin cover.

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