JP2020032925A - Ventilation mat and seat - Google Patents

Abstract

To provide ventilation or the like for a seated person without impact of a hanging part.SOLUTION: In a ventilation mat, plural ventilation mat bodies 111, 112 in which plural tubes 11 are linked like a sheet, are connected via connection mats 121, 122. The connection mats 121, 122 include a substrate having a three-dimensional structure with air permeability, and a barrier tube covering the periphery of the substrate, and the plural tubes 11 and the substrate are communicating so that air can circulate. In the ventilation mat, an air permeation rate of the connection mats 121, 122 is 2% or higher, and further, when a compression amount in the substrate is 40%, a compression stress value is 2-30 kPa. In a seat, the ventilation mat is disposed so that the connection mats are positioned on a hanging part.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 for the seat, and particularly to a seat that can be configured to be suitable for blowing air through the seat.

  For example, when a user sits on a seat of an automobile or the like for a long period of time particularly under a condition of high ambient temperature and humidity, the surface of the seat and a human body contact portion may have "humidity" or "stickiness". Since this "humidity" and "stickiness" cause a loss of comfort of the occupant, various countermeasures against such a problem have been conventionally studied.

  As one of such studies, for example, proposals such as Patent Documents 1 and 2 have been made by the patent applicant. In particular, FIGS. 7 and 14 of Patent Document 1 show schematic cross-sectional views of a seat in which a blower is incorporated, in which wind sent from a blower such as a blower passes through a tubular ventilation path. Then, a mode is disclosed in which the air is blown out from the air outlet to blow air to a seated person. This blowing eliminates the “humidity” and “stickiness” of the seated person. Further, as related techniques, for example, Patent Documents 3 to 6 are also cited.

Patent No. 4999455: Kurabe Patent No. 5430085: Kurabe JP 2007-84039 A: Bridgestone JP 2017-71368 A: Bridgestone Patent No. 4107073: Matsushita Electric Industrial Japanese Patent No. 4125721: W.C. E. FIG. T.

  Here, a suspension portion for fixing the skin cover to the seat cushion material is formed particularly in the vehicle seat. As the structure of the suspension portion, a suspension member is formed on the skin cover, a fixing member is formed by embedding a wire or the like in the seat cushion material, and the suspension member and the fixing member are connected by a stopper such as a hog ring. By stopping, the skin cover and the seat cushion material are connected. The suspension member is formed of a material such as a resin plate or a non-woven fabric band, and the suspension member of the skin cover is pulled into the fixing member of the seat cushion material with strong tension so that the skin is not loosened and wrinkles do not occur. And locked. Therefore, at the position of the suspension portion, the ventilation path is greatly curved toward the seat cushion material, and is sandwiched between the suspension member and the fixing member. Thus, in the conventional blower, in the hanging portion, the ventilation of the ventilation path is hindered, and it is difficult to send air to the tip of the hanging portion or to suck air from the tip of the hanging portion. there were.

  The present invention has been made in order to solve such problems of the related art, and an object of the present invention is to provide a ventilation mat capable of blowing air to a seated person without the influence of a hanging portion. It is in.

In order to achieve the above object, a ventilation mat according to the present invention includes a ventilation mat body in which a plurality of tubes are connected in a sheet shape, and a connection mat, wherein the plurality of ventilation mat bodies include the connection mat. The ventilation mat body is provided with a slit so as to straddle the plurality of tubes on one side of the plurality of tubes, and the tube is provided on the other side of the plurality of tubes. Having a ventilation part connected by a material of the above, the connection mat has a base material having a three-dimensional structure with air permeability, and a barrier tube covering the periphery of the base material, the plurality of tubes and the The base material is communicated so as to allow air circulation, the air permeability of the connection mat is 2% or more, and the compression amount of the base material is % And compressing stress value when the are those wherein 2～30KPa.
Further, it is conceivable that a heat insulating sheet is attached to substantially the entire surface of the ventilation mat body and the connection mat, and the ventilation mat body and the connection mat are fixed by the heat insulating sheet.
In addition, it is conceivable to have an airflow mixing unit communicating between the plurality of tubes.
The 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 by the skin cover, and the seat cushion material and the skin cover are fixed. And the ventilation mat is arranged such that the connection mat is positioned on the suspension.

  According to the ventilation mat of the present invention, sufficient ventilation is performed even in the hanging portion, so that even in a seat having the hanging portion, air is blown to a seated person and air is sucked from the seated person. be able to.

FIG. 3 is a plan view showing one surface of a ventilation mat used in the present invention. It is a top view which shows the other surface of the ventilation mat used by this invention. 1 is a schematic view of an automobile seat on which a ventilation mat of the present invention is mounted. It is sectional drawing of the suspension part of the sheet | seat for motor vehicles which mounts the ventilation mat of this invention.

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

  In the following description, in a state where the ventilation mat is installed on the vehicle seat, the surface located on the skin cover side, that is, the seat surface side 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 the first embodiment. FIG. 1 shows a perspective view of the ventilation mat 1. As shown in FIG. 1, the ventilation mat 1 according to the first embodiment has a first ventilation mat body 111 and a second ventilation mat body 112. Further, it has connection mats 121 and 122 for connecting the first ventilation mat body 111 and the second ventilation mat body 112. The ventilation mat 1 according to the first embodiment may have the ventilation guide 30. In such a ventilation mat 1, the ventilation guide 30 is formed by providing a fan mounting hole at one end and connecting the other end to a connection hole provided on a side surface of the ventilation mat body 111. In the first embodiment, two connection mats are used, but of course, one connection mat or three or more connection mats may be used. Also, two ventilation mat bodies are used, but of course, two or more ventilation mat bodies may be used.

  The main structure of the first ventilation mat main body 111 and the second ventilation mat main body 112 is constituted by a plurality of tubes 11 connected in a sheet shape. The tube 11 is formed of, for example, a resin such as polyethylene or an olefin-based plastic elastomer. As a method of connecting the plurality of tubes 11, a method of integrally forming the plurality of tubes 11 in a sheet shape, a method of bonding the plurality of tubes 11 cut to a predetermined length, and a method of cutting to a predetermined length A method of adhering the plurality of tubes 11 to a cloth such as a non-woven fabric is considered.

  It is conceivable that the first ventilation mat body 111 and the second ventilation mat body 112 are provided with a ventilation unit 13 and an airflow mixing unit 14. The ventilation portion 13 is a portion in which a slit is provided on the side of the plurality of tubes 11 that is in contact with the skin cover, and the side of the plurality of tubes 11 that is in contact with the seat cushion material is connected by a material forming the tubes. One embodiment of the ventilation section 13 is a groove provided so as to cut the tube in a direction orthogonal to the extending direction of the tube 11. In FIG. 1, two ventilation units 13 are provided on the first ventilation mat body 111 and two ventilation units 13 are provided on the second ventilation mat body 112.

  Further, the airflow mixing section 14 is provided at a portion closer to the connection section of the ventilation guide 20 than the ventilation section 13, and is provided so as to communicate between the plurality of tubes 11. In the example shown in FIG. 1, the airflow mixing unit 14 is provided so as to cut a tube in a direction orthogonal to the extending direction of the tube 11 so that a slit is provided on the seat cushion material side of the ventilation mat body 10. Groove. Further, the airflow mixing section 14 provided in the ventilation mat body 10 according to the first embodiment has a form in which a tube in contact with a skin cover placed on a sheet remains without being scraped off. The airflow mixing unit 14 is a space in which adjacent tubes communicate with each other, and is a part that diffuses or mixes air flowing through a plurality of tubes constituting the ventilation mat body 10 in this space. In the airflow mixing section 14, the air diffusion efficiency can be increased by increasing the flatness of the bottom of the slit. Further, it is conceivable that the airflow mixing section 14 is provided near the connection mats 121 and 122.

  In the example illustrated in FIG. 1, the nonwoven fabric 12 is attached to the first ventilation mat main body 111 at a portion including the connection portion of the ventilation guide 30. Although not shown in FIG. 1, the nonwoven fabric 12 is also attached to the back surface of the ventilation mat body 10 (for example, the surface on which the opening of the airflow mixing unit 14 is provided). Regarding the nonwoven fabric 12 to be attached to the back surface, the non-woven fabric 12 may or may not cover the airflow mixing section 14, and the attachment range may be different for each product.

  In the following description, of the surface of the ventilation mat 1 according to the first embodiment, the side facing the skin cover (that is, the side on which the opening of the ventilation section 13 is provided) is referred to as the front side, and the first embodiment is described. Of the surface of the ventilation mat 1 facing the seat cushion material (that is, the side on which the opening of the airflow mixing unit 14 is provided) is referred to as the back surface side.

  Each of the connection mats 121 and 122 has a base material (for example, spacers 22 and 23) having a three-dimensional structure with air permeability, and a barrier tube that covers the periphery of the base material. The base material (for example, the spacers 22 and 23) is, for example, a three-dimensional knitted fabric in which fibers such as a double Russell or a 3D mesh sheet are three-dimensionally knitted, a structure in which fibers are intricately intertwined in a three-dimensional shape, a continuous body. A foam material (sponge) having air bubbles, a material in which rubber tubes are arranged, or the like can be used. Examples of the three-dimensional knitted fabric include Fusion (registered trademark) manufactured by Asahi Kasei Corporation, Swingnet (registered trademark) manufactured by Sumie Textile, 3mesh (registered trademark) manufactured by Muller Textile, and Cubic Eye (registered trademark) manufactured by Unitika. And the like. Examples of the structure in which the fibers are intertwined in a three-dimensional manner include Breathair (registered trademark) manufactured by Toyobo. As a material constituting a foam material or a rubber tube having open cells, for example, materials such as urethane, EPDM, chloroprene, isoprene, silicone, and various thermoplastic elastomers are used. It is also conceivable that these substrates have a 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 section increases (the number of fibers increases) intermittently or the density of fibers continuously decreases (number of fibers) There is a case in which a direction having a portion is formed. In this case, the lower the fiber density (the smaller the number), the easier the ventilation. When a substrate having such a directionality is used, the direction of air flow, which is the direction in which air is actually ventilated, is the direction in which air is easily ventilated in the substrate, for example, the density of fibers is continuously reduced (number of fibers). It is preferable that the direction is the same as the direction in which the portion has). For the barrier tube, for example, a nonwoven fabric, a spunbonded nonwoven fabric, a woven fabric, a film, and a rubberized fabric can be used. Here, as the material of the nonwoven fabric, the spunbonded nonwoven fabric and the woven fabric, aramid fiber, glass fiber, cellulose fiber, nylon fiber, vinylon fiber polyester fiber, polyethylene fiber, polypropylene, polyolefin fiber, rayon fiber and the like can be considered. In addition, as the material of the film, polyethylene, polyvinyl, polypropylene, PET, various thermoplastic elastomers and the like can be considered. The rubberized cloth is processed to give airtightness to the fiber. The base material is communicated with the plurality of tubes 11 so as to be able to circulate air therebetween, whereby the first ventilation mat body 111, the connection mat 121, the connection mat 122, and the second ventilation mat body 112 are connected. Become ventilated.

The connection mats 121 and 122 have an air permeability of 2% or more. The air permeability indicates the ratio of the air flow rate when the connection mat is directly connected to the air supply source to the air flow rate from the air supply source to which nothing is connected. Regarding the measurement of the air flow rate with the connection mat directly connected to the air supply source, more specifically, connect the air supply source to one end of the connection mat where the barrier tube is open, and connect the flow meter to the other end. Connect and measure the flow rate when the air source is activated. In particular, the air permeability of the connection mats 121 and 122 is preferably 35% or more, and more preferably 40% or more. In order to provide such connection mats 121 and 122, the air permeability of the base material is preferably 2000 cm ³ / dm ² · min or more. If the air permeability is 2000 cm ³ / dm ² min or more, the air permeability of the connection mats 121 and 122 can be excellent. In addition, the air permeability is measured in the ventilation direction when actually installed as a ventilation mat, and is measured in accordance with ISO 9237 with a test pressure of 2 hPa. If the air permeability of the connection mats 121 and 122 is excellent, the ventilation between the first ventilation mat body 111 and the second ventilation mat body 112 can be made sufficient.

  The compressive stress value when the amount of compression in the base material is 40% (hereinafter sometimes referred to as a 40% compressive stress value) is 2 to 30 kPa. If the 40% compressive stress value is less than 2 kPa, the base material is crushed by the tension at the time of fixing the skin cover at the suspension portion, and the first ventilation mat body 111 and the second ventilation mat body 112 are crushed. The ventilation between them is not sufficient. If the 40% compressive stress value exceeds 30 kPa, it becomes difficult to bend the base material in accordance with the shape of the seat cushion material when fixing the skin cover with the suspension portion, which causes a problem in workability. In addition, the seated person may feel the connection mat and cause a sense of discomfort. In particular, the 40% compressive stress value of the substrate is preferably 10 kPa or more, and more preferably 20 kPa or less. In addition, the 40% compressive stress value is measured based on ISO3386-1.

  In a base material or the like made of a three-dimensional knitted fabric, when there are many fibers present in the ventilation path, and when the diameter of the fibers present in the ventilation path is large, the air permeability of the connection mat is low, but the base material is compressed by 40%. Stress values tend to be higher. Further, the 40% compressive stress value of the base material can be designed according to the fiber material of the base material. The air permeability of the connection mat can also be designed according to the cross-sectional area and length of the connection mat. In order to obtain the optimum air permeability of the connection mat and the 40% compressive stress value of the substrate, it is necessary to use an appropriate one for the dimensions of the connection mat and the fibers used for the substrate.

  Both ends of the connection mats 121 and 122 are inserted into connection holes provided in the side barrier 11. In FIG. 1, connection portions between the connection mats 121 and 122 and the first ventilation mat body 111 and the second ventilation mat body 112 are connection portions 25 to 28. In the ventilation mat 1 according to the first embodiment, the nonwoven fabric 12 with double-sided tape is wound around the first ventilation mat body 111 and the second ventilation mat body 112 with the connection mats 121 and 122 inserted. The first ventilation mat body 111, the second ventilation mat body 112, the connection mat 121, and the connection mat 122 are connected so as not to come off. At this time, a more stable connection can be obtained by performing laser welding or the like between them. As a method of connecting the first ventilation mat body 111, the second ventilation mat body 112, the connection mat 121, and the connection mat 122, any conventionally known method such as adhesion, adhesion, welding, sewing, or the like may be used. .

  The ventilation guide 30 is a non-breathable tube, and a ventilation path is formed inside the base (for example, the spacer 32) having a breathable three-dimensional structure. As the spacer 32, for example, a 3D mesh sheet in which fibers are three-dimensionally knitted can be used. In addition, the non-breathable tube is formed by molding a film into a bag shape, and a resin such as polypropylene or various elastomers can be used as a film material.

  An opening is provided at one end of the ventilation guide 30 so that the spacer 32 is exposed. The opening is fitted with a mold formed of a plastic material, and forms a fan mounting hole 31. The other end of the ventilation guide 30 is inserted into a connection portion provided on the first ventilation mat body 111. In FIG. 1, a portion where the ventilation guide 30 and the first ventilation mat body 111 are connected is covered with the nonwoven fabric 12. In the ventilation mat 1 according to the first embodiment, the nonwoven fabric 12 with the double-sided tape is wound in a state where the ventilation guide 30 is inserted into the first ventilation mat main body 111, so that the ventilation mat 1 and the first ventilation mat main body 111 are ventilated. The guide 30 is connected so as not to come off. At this time, if the ventilation guide 30 and the first ventilation mat body 111 are welded by laser or the like, the connection can be made more stably. As a method of connecting the ventilation guide 30 and the first ventilation mat body 111, any conventionally known method such as adhesion, adhesion, welding, sewing, or the like may be used. By using the nonwoven fabric with the double-sided tape, the opening at the end of the first ventilation mat main body 111 on the side of the ventilation guide can be closed, and leakage or intrusion of airflow therefrom can be prevented. That is, the nonwoven fabric 12 functions as an airflow leakage prevention unit that closes the openings at the ends on the ventilation guide side of the plurality of tubes 11 that form the first ventilation mat main body 111 to prevent airflow leakage and intrusion.

  Here, the shapes of the first ventilation mat body 111, the second ventilation mat body 112, and the spacers 22, 23, and 3 according to the first embodiment will be described in more detail. Therefore, FIG. 2 is a diagram illustrating a detailed structure of the ventilation mat according to the first embodiment. In FIG. 2, a schematic diagram of the ventilation mat 1 when the ventilation mat 1 is viewed from the front, a schematic diagram of the ventilation mat 1 when the ventilation mat 1 is viewed from the back, and a bench where the ventilation mat 1 is viewed from the side. A schematic view of the ration mat 1 body 10 is shown. FIG. 2 shows only the shape of the spacer 32 that forms the ventilation path in the ventilation guide 30 among the configurations of the ventilation guide 30.

  As shown in FIG. 2, the first ventilation mat body 111 is provided with notches 15a, 15b, 15c, and the second ventilation mat body 112 is provided with notches 15d, 15e. . On the other hand, the shape of the side of the spacers 22, 23, 32 to be inserted into the first ventilation mat body 111 and the second ventilation mat body 112 is a portion covered with a bag-shaped non-breathable tube or barrier tube. Although the width is the same as that described above, portions inserted into the cutouts 15 a to 15 e are exposed when the non-breathable tube or the barrier tube is covered. The notches 15a to 15e serve as connecting portions for connecting the connection mats 121 and 122 to the first ventilation mat main body 111 and the second ventilation mat main body 112. By forming the spacers 22, 23, and 32 in such a shape, it is possible to increase the member use efficiency when cutting the spacers 22, 23, and 32 from the original 3D mesh sheet material.

  Further, as shown in FIG. 2, a ventilation section 13 is provided on the surface side of the first ventilation mat body 111 and the second ventilation mat body 112. When seen from the side, the ventilation portion 13 is a groove formed in the tube 11 opened to the front side. On the back side of the first ventilation mat body 111 and the second ventilation mat body 112, an airflow mixing section 14 is provided. It can be seen from the side that the airflow mixing section 14 is a groove cut in the tube 11 opened on the back side. In addition, a part of the airflow mixing unit 14 is provided between the ventilation unit 13 and the notch 15, and another part of the airflow mixing unit 14 is provided near the connection mats 121 and 122. The airflow mixing section 14 is provided as close as possible to the notch 15 and the connection mats 121 and 122, so that the airflow mixing section 14 is formed by the spacers 22, 23 and 32 connected to the notches 15 and the connection mats 121 and 122. (For example, the direction in which the groove serving as the airflow mixing section 14 extends) Since the generation of the airflow is promoted, the diffusion effect of the airflow flowing through the plurality of tubes 11 can be enhanced.

  Subsequently, a mode of incorporating the ventilation mat 1 according to the first embodiment into an automobile seat will be described. Therefore, FIG. 3 shows a schematic view of an automobile seat on which the ventilation mat according to the first embodiment is mounted. Since the ventilation mat 1 according to the first embodiment is actually installed under the skin cover, the ventilation mat 1 is mounted on the automobile seat 60 while being hidden by the skin cover. Therefore, in the schematic diagram shown in FIG. 3, the ventilation mat body 10 is illustrated on the seat surface 62 so that the portion where the ventilation mat 1 is installed in the automobile seat 60 can be seen. Note that the ventilation guide 30 is arranged such that the fan mounting hole 31 goes around the back surface of the vehicle seat 60.

  As shown in FIG. 3, the vehicle seat 60 has a backrest 61 and a seat surface 62. And, the backrest 61 and the seating surface 62 are respectively provided with hanging portions 63. The hanging portion 63 is a portion where the skin cover is connected to the cushion material by a hanging member. Therefore, the ventilation mat 1 according to the first embodiment is configured such that the first ventilation mat body 111 and the second ventilation mat body 112 sandwich the hanging portion 63, and the connection mat 121 and the connection mat 122. Are arranged so as to be located in the hanging portion 63. Further, the ventilation mat 1 according to the first embodiment is provided on the seat surface 62, respectively. Of course, a ventilation mat may be provided on the backrest 61. Further, the ventilation mat 1 according to the first embodiment is installed such that the ventilation section 13 is located on the occupant side and the airflow mixing section 14 is located on the seat cushion side (not shown). Although not shown, the seat cushion material forming the seating surface 62 includes a first ventilation mat body 111, a second ventilation mat body 112, a connection mat 121, a connection mat 122, and the ventilation guide 30. For embedding, concave portions corresponding to these shapes are formed. Then, the first ventilation mat main body 111, the second ventilation mat main body 112, the connection mat 121, the connection mat 122, and the ventilation guide 30 are set so as to be fitted into the concave portions.

  The structure near the hanging portion 63 will be described in more detail. FIG. 4 is a cross-sectional view of the suspension portion of the vehicle seat on which the ventilation mat according to the first embodiment is mounted, taken along line IV-IV of FIG.

  As shown in FIG. 4, the first ventilation mat main body 111 and the second ventilation mat main body 112 are provided at positions sandwiched between the cushion material 64 and the skin cover 65. Further, the first ventilation mat main body 111 and the second ventilation mat main body 112 are separately arranged so as to sandwich the hanging portion 63. In addition, the connection mat 121 and the connection mat 122 are arranged so as to be located in the hanging portion 63. The suspension portion 63 is provided with a suspension member 66, and the suspension member 66 connects the skin cover 65 to the cushion member 64 such that the skin cover 65 is pulled by the cushion member 64. Specifically, a groove is formed in the cushion material 64 at a position where the hanging member 66 is attached to the skin cover 65 described above. Then, a metal wire is embedded as a fixing member 67 at the bottom of the groove. With respect to the cushion member 64 and the skin cover 65, the suspension member 66 of the skin cover 65 is drawn into the bottom of the groove of the cushion member 64, and the suspension member 66 and the fixing member 67 are fixed by a stopper 68 such as a hog ring. Linked by The stopper 68 is disposed at a position avoiding the connection mats 121 and 122. Due to the tension that pulls the suspension member 66 into the bottom of the groove of the cushion material 64, the skin cover 65 is in a tight state.

Here, a connection mat having different dimensions and a different type of base material was prepared, and a ventilation mat was prepared according to the above-described embodiment, and Examples 1 to 9 were made. Examples 1, 2, 7, and 8 use a base material made of the same type of three-dimensional knit. In Examples 3, 4, 5, and 6, base materials made of different types of three-dimensional knitted fabrics are used. Example 9 uses a base material made of a urethane foam resin having continuous pores. The ventilation mats according to Examples 1 to 9 were connected to an air supply source (a blower having a flow rate of 44.8 m ³ / h and a static pressure of 275 Pa) and arranged in a vehicle seat. At that time, the workability of assembling the suspension was confirmed. In addition, in a state where the ventilation mats according to Examples 1 to 9 are arranged in the vehicle seat, the measurer sits down to check the feeling of the hanging portion, and the air source is set to 12 V so as to suck air. It was confirmed whether or not the second ventilation mat body 112 felt a refreshing feeling due to the suction of air. Table 1 shows the workability, feel, and refreshing feeling together with the details of the connection mat of each embodiment. Regarding the evaluations of workability, feel, and refreshing sensation shown in Table 1, those which were excellent were evaluated as ○, those which had no practical problems but were somewhat insufficient were evaluated as △, and those which had practical problems were evaluated as ×.

  As shown in Table 1, in any of the ventilation mats of Examples 1 to 9, there is no problem in practical use in terms of the workability of assembling the hanging portion, the feel of the hanging portion, and the refreshing feeling by suction of air. there were. In particular, in the case of the first and second embodiments, the hanging portion was easy to assemble, there was no sense of incongruity in the hanging portion, and sufficient air suction was felt even from the portion farthest from the air supply source. . In the case of Example 3, the connection mat was slightly crushed by the pressure of the hanging portion, and the suction air volume was slightly reduced. In the case of Example 4, although not as great as in Example 3, slight collapse of the connection mat was observed. Although the air according to Example 5 was sufficiently sucked in air, it was slightly inferior to Example 1. In the case of the sixth embodiment, a little force was required for assembling the hanging portion, and the seat had a different feeling from the other embodiments even when seated. However, since the hanging portion has a stronger feeling of the seam due to the fact that the hanging member is attached to the seam of the skin cover, it did not feel uncomfortable. Those according to Examples 7 to 9 felt that the suction air volume was small as compared with the other examples.

  As described above, in the ventilation mat 1 according to the first embodiment, the air permeability of the connection mat is 2% or more, and the compression stress value when the compression amount is 40% is 2 to 30 kPa. Therefore, the ventilation between the first ventilation mat body 111 and the second ventilation mat body 112 can be made sufficient. This sufficient ventilation can be maintained even when tension is applied when fixing the skin cover with the hanging portion. Further, when fixing the skin cover with the hanging portion, the base material can be bent according to the shape of the seat cushion material, so that there is no problem in workability at the time of assembling the seat. Also, the seated person does not feel the connection mat and feel uncomfortable.

  In addition, since the connection mat is disposed in the hanging portion in a bent state, in actual use, the connection mat is more difficult to ventilate than the ventilation mat body. It is conceivable that the base material has better air permeability than a plurality of tubes in order to level the overall air permeability.

  In addition, since the ventilation mat 1 according to the first embodiment is formed by combining parts having simple shapes, the material use efficiency of the components of the ventilation mat 1 is high (for example, disposal in one material). High ratio of available material to material). That is, by increasing the utilization efficiency of the material, the ventilation mat 1 according to the first embodiment can reduce the manufacturing cost.

  In addition, when the connection mats 121 and 122 have a shape that is in contact with only a part of the plurality of tubes 11 forming the first ventilation mat body 111 and the second ventilation mat body 112, the first ventilation mat There is a problem that the amount of airflow flowing through the plurality of tubes 11 constituting the mat body 111 and the second ventilation mat body 112 cannot be equalized. However, in the ventilation mat 1 according to the first embodiment, the connection mats 121 and 122 are connected to the first ventilation mat body 111 and the second ventilation mat body 112 by providing the airflow mixing unit 14. The airflow flowing through the tube 11 at a position distant from the connection portion can be guided to the connection portion via the airflow mixing portion 14. As a result, the ventilation mat 1 according to the first embodiment has a configuration in which the first ventilation mat main body 111 and the second ventilation mat main body 112 and the connection mats 121 and 122 are only partially connected. Also, the airflow flowing through the plurality of tubes 11 constituting the first ventilation mat body 111 and the second ventilation mat body 112 can be made uniform.

  When incorporating the ventilation mats 1 to 4 according to the present invention into the automobile seat 60, for example, the first ventilation mat body 111, the second ventilation mat body 112, etc. are fixed on the cushion material 64 with an adhesive tape or the like. It is possible to do. In addition to such an aspect, for example, when molding the cushion material 64, the first ventilation mat body 111, the second ventilation mat body 112, and the like are arranged in a molding die in advance, and the cushion is placed there. It is also conceivable to foam and harden the cushioning material after pouring the material. In this case, the first ventilation mat main body 111, the second ventilation mat main body 112, and the like, and the cushion material 64 are securely fixed, so that positional displacement can be prevented. Such a construction method is common in the technical field of car seat heaters, and for example, Patent Document 5 and the like can be referred to.

  It should be noted that the present invention is not limited to the above-described embodiment, and can be appropriately changed without departing from the gist.

  As described in detail above, according to the ventilation mat of the present invention, it is possible to blow air to the occupant without the influence of the hanging portion. As the application, in addition to the seats of automobiles, for example, vehicle seats such as motorcycles and railway cars may be used, child seats, seats of heavy equipment for civil engineering construction, seats of ships and aircraft, seats of ferris wheel at amusement parks. , Seats for various stadiums, seats for appreciation in theaters and movie theaters, benches installed in stations, theme parks, outdoor parks, etc., sofas and seating chairs used in homes and offices, barber chairs Application to medical chairs used in various medical institutions is also conceivable. In addition to a seat, it can be widely applied to, for example, a bed and a stroller.

DESCRIPTION OF SYMBOLS 1 Ventilation mat 11 Tube 12 Non-woven fabric 13 Ventilation part 14 Air flow mixing part 15a-e Notch part 22, 23 Spacer 30 Ventilation guide 31 Fan mounting hole 32 Spacer 33 Connection part 60 Car seat 61 Backrest 62 Seat 63 Hanging Part 64 Cushion material 65 Skin cover 66 Suspension member 67 Fixing member 68 Stopper 111 First ventilation mat body 112 Second ventilation mat body 121, 122 Connection mat

Claims (4)

A ventilation mat body in which a plurality of tubes are connected in a sheet shape,
Having a connection mat,
The plurality of ventilation mat bodies are connected via the connection mat,
The ventilation mat body,
A slit is provided so as to straddle the plurality of tubes on one side of the plurality of tubes, and has a ventilation unit connected to the other side of the plurality of tubes by a material of the tubes,
The connection mat is
A base material having a three-dimensional structure with air permeability,
A barrier tube covering the periphery of the base material, and the plurality of tubes and the base material are communicated with each other so that air circulation is possible;
The air permeability of the connection mat is 2% or more,
A ventilation mat having a compression stress value of 2 to 30 kPa when the amount of compression in the base material is 40%. 2. The ventilation mat according to claim 1, wherein the ventilation mat body and the connection mat have a heat insulation sheet attached to substantially the entire surface, and the ventilation mat body and the connection mat are fixed by the heat insulation sheet. 3. The ventilation mat according to claim 1, further comprising an airflow mixing unit communicating between the plurality of tubes. It has a seat cushion material, a skin cover, and the ventilation mat according to claim 1 or 2,
The seat cushion material is covered by the skin cover,
A hanging portion to which the seat cushion material and the skin cover are fixed is formed,
A seat on which the ventilation mat is arranged such that the connection mat is located on the hanging portion.

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