JP2017114214A - Vehicle seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle seat capable of assuring flowing of air through an entire air passage formed on a seat surface side when the blower of a seat rear surface side is operated in the seated state of an occupant on a seat.SOLUTION: This vehicle seat is configured in a manner that each of a seat cushion and a seat back has a urethane pad, each of the urethane pad has a hole formed from the surface of a side on which an occupant sits to the surface of a side opposite the surface of the side on which an occupant sits, the inside of the hole formed in each of the urethane pad is filled with a material more ventilative than the urethane pad, a plurality of grooves is formed on the surface of the side of the urethane pad on which the occupants sits so as to extend from the hole, and the surface of the side opposite the surface of the side of the urethane pad on which the occupant sits is provided with a blower that discharges or sucks air from the surface of the side of the urethane pad on which the occupants sits via the hole filled with the ventilative material.SELECTED DRAWING: Figure 3A

Description

  The present invention relates to a seat for a vehicle such as a passenger car or a truck.

  Vehicle seats are equipped with a structure that relieves moisture and hot air on the seat surface by sending air from the back side of the seat to the side of the passenger seated on the seat with a blower, or drawing in air There is.

  For example, in Japanese Patent Application Laid-Open No. 2004-73429 (Patent Document 1), a large number of continuous linear bodies made of a thermoplastic resin such as a thermoplastic elastomer resin are wound in a loop shape on the seating portion of the seat body, In addition, there is described a breathable sheet provided with a net-like cushion body made of a three-dimensional net-like structure in which contact portions are fused, and formed in a urethane pad of the sheet main body and having a vent hole communicating with the net-like cushion body. ing.

  Japanese Patent Laid-Open No. 2012-115515 (Patent Document 2) discloses that a portion of the seating portion of the seat body that contacts the buttock of the occupant is formed of urethane, and a portion of the seat body that contacts the thigh of the occupant is made of thermoplastic resin. There is described a breathable sheet formed of a three-dimensional network cushion body made of a three-dimensional network structure in which a large number of continuous linear bodies are wound in a loop shape, and the contact portions are fused together.

JP 2004-73429 A JP 2012-115515 A

  The fiber pad formed by the continuous linear body which consists of a thermoplastic resin as described in patent document 1 or 2 is excellent in air permeability, and air can diffuse and flow in the fiber pad.

  However, in the configuration described in Patent Document 1, the fiber pad and the blower are connected by a vent formed in the urethane pad, and the cross section of the vent is compared with the cross section of the fiber pad. Since it is quite small, the air sent out from the air vent to the fiber pad side flows directly above the air vent and hardly flows in the radially separated portion of the air vent. As a result, the effect of relieving moisture and hot air on the sheet surface is locally limited to just above and around the vent hole.

  Further, in the configuration described in Patent Document 2, a relatively wide portion where the thigh of the occupant hits is formed by a three-dimensional reticulated cushion body made of a continuous linear body made of a thermoplastic resin. A blower for actively circulating air through the mesh cushion is not provided, and a sufficient effect of relieving moisture and hot air on the seat surface cannot be expected.

  Further, the three-dimensional mesh cushion body is relatively soft and easily deformed as compared with the urethane pad. Therefore, as described in Patent Document 2, when the three-dimensional reticulated cushion body is arranged in a relatively wide portion where the thigh of the occupant hits, when the occupant sits on the three-dimensional reticular cushion body, the surrounding support disappears and the three-dimensional The net-like cushion body is greatly deformed. As a result, the passenger's sitting comfort may be worsened, and the three-dimensional reticulated cushion body may be in close contact with each other, resulting in a worse air flow.

  The present invention solves the above-mentioned problems of the prior art, and when the air blower on the back side of the seat is operated while the passenger is seated on the seat, the entire air flow path formed on the seat surface side is provided. The present invention provides a vehicle seat that allows air to flow reliably.

In order to solve the above-described problems, in the present invention, a seat for a vehicle including a seat cushion, a seat back, and a headrest is provided. The seat cushion and the seat back each have a urethane pad. A hole that leads from the surface on the side where the passenger is seated to the surface opposite to the surface on which the passenger is seated is formed, and compared to the urethane pad inside the hole formed in each urethane pad Filled with a breathable material, the surface of each urethane pad occupant seated is formed with a plurality of grooves extending from the hole, and each urethane pad occupant sits Air from the surface on the opposite side to the surface on which the passenger of each urethane pad is seated through a hole filled with a material having air permeability. And configured to include a blower for exhausting or intake.
In order to solve the above-described problems, in the present invention, a vehicle seat including a seat cushion, a seat back, and a headrest is provided. The seat cushion and the seat back each have a urethane pad, and the seat cushion and the seat back At least one urethane pad has a hole that leads from the surface on the side where the occupant is seated to the surface opposite to the surface on which the occupant is seated. Inside the hole formed in the urethane pad Is filled with a material that is breathable compared to the urethane pad, and the urethane pad occupant seated side has an opening on the surface on which the occupant sits, from the hole A groove extending in the cross section perpendicular to the direction extending from the hole of the groove, the width of the inside of the urethane pad being larger than the width of the opening. And it has, on the side of the opposite surface to the side surface of the occupant of the urethane pad is seated and configured with a blower.

  According to the present invention, when the occupant operates the blower on the back side of the seat while sitting on the seat, the air surely flows through the entire air flow path formed on the seat surface side. Can now.

It is a perspective view which shows the external appearance of the vehicle seat which concerns on each Example of this invention. It is a top view of the vehicle seat of the state which removed the trim cover which covers the surface of the vehicle seat which concerns on Example 1 of this invention, and fell the seat back. It is AA sectional drawing in FIG. 2 of the vehicle seat which concerns on Example 1 of this invention. It is AA sectional drawing in FIG. 2 of the modification of the vehicle seat which concerns on Example 1 of this invention. It is AA sectional drawing in FIG. 2 of another modification of the vehicle seat which concerns on Example 1 of this invention. It is a top view of the vehicle seat of the state which removed the trim cover which covers the surface of the vehicle seat which concerns on Example 2 of this invention, and fell the seat back. It is BB sectional drawing in FIG. 4 of the vehicle seat which concerns on Example 2 of this invention. It is sectional drawing of the vehicle seat which concerns on Example 1 of this invention corresponding to CC cross section of FIG. It is CC sectional drawing in FIG. 4 of the vehicle seat which concerns on Example 3 of this invention. It is sectional drawing which shows the modification of CC cross section in FIG. 4 of the vehicle seat which concerns on Example 3 of this invention. It is sectional drawing which shows another modification of CC cross section in FIG. 4 of the vehicle seat which concerns on Example 3 of this invention.

  The present invention provides a vehicle seat in which a fiber pad is provided instead of a urethane pad in a portion that contacts a thigh of a seated occupant and a portion that contacts a back portion, and a groove is provided in a peripheral portion thereof. When the person operates the blower on the back side of the seat while seated on the seat, the air can be surely flowed through the entire air flow path formed on the seat surface side. is there.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 shows a basic configuration of a vehicle seat 1 targeted in the present invention. The vehicle seat 1 includes a seat cushion 2 on which a passenger sits, a seat back 3 on which a passenger sitting on the seat cushion leans back, and a headrest 4 that supports the head of the passenger.

  FIG. 2 is a plan view of the vehicle seat 1 in a state where the trim cover that covers the surface of the vehicle seat 1 shown in FIG.

  The urethane pad 21 on the side of the seat cushion 2 is formed with relatively large holes 211a and 211b at the part where the thigh of the seated occupant hits, and fibers are placed inside the holes 211a and 211b. Auxiliary pad members (fiber pads) 214a and 214b formed in a knitted form are filled.

  Further, from the holes 211a and 211b filled with the fiber pads 214a and 214b, grooves 212a and 212b extending forward (in the direction of the knee) with respect to the seated passenger and grooves 213a extending laterally (outside), 213b is formed. The grooves 212a, 212b and 213a, 213b are not filled with fiber pads 214a, 214b, and are hollow.

  On the other hand, the urethane pad 31 on the side of the seat back 3 is formed with relatively large holes 311a and 311b where the back of the seated passenger hits. Fibers are placed inside the holes 311a and 311b. Auxiliary pad members (fiber pads) 314a and 314b formed in a knitted form are filled.

  Further, from the hole portions 311a and 311b filled with the fiber pads 314a and 314b, groove portions 312a and 312b extending above the back portion of the seated occupant and groove portions 313a and 313b extending to the side (outside) are formed. Has been. The groove portions 312a, 312b and 313a, 313b are not filled with fiber pads 314a, 314b, and are hollow.

  FIG. 3A shows an AA cross section of the urethane pad 21 on the side of the seat cushion 2 in FIG. The holes 211 a and 211 b are formed through the urethane pad 21. Further, blowers 215a and 215b are attached to portions corresponding to the holes 211a and 211b on the back surface side (lower side in FIG. 3A) of the urethane pad 21, respectively. In addition, in FIG. 3A, the display of the member which connects the air blowers 215a and 215b and the urethane pad 21 is abbreviate | omitted. As the blowers 215a and 215b, for example, sirocco fans are used.

  In the configuration shown in FIG. 3A, fiber pads 214a and 214b are filled in the holes 211a and 211b, respectively. Further, a groove 213a is formed outward from the hole 211a on the upper surface side (upper side in FIG. 3A) on which a passenger sits on the urethane pad 21, and the groove is formed outward from the hole 211b. 213b is formed.

  By configuring the side of the seat cushion 2 in this manner, when the blowers 215a and 215b are operated in a state where the passenger is seated, the blowers 215a and 215b are the sides on which the passenger is seated of the fiber pads 214a and 214b. Then, air is sucked in and discharged from the back surface side (lower side in FIG. 3A) of the urethane pad 21 to the outside. At this time, air is also sucked in from the groove portions 212a and 212b and the groove portions 213a and 213b, and air is sucked from a relatively wide area below and around the thigh of the occupant seated on the seat cushion 2.

  Thus, by adopting a configuration in which air is sucked from a relatively wide area under and around the thigh of the occupant seated on the seat cushion 2, compared to a case where air is sucked only from the holes 211a and 211b. Thus, moisture and heat in a relatively wide area of the seat surface can be relieved, and passenger comfort can be increased. Further, since air is sucked from a relatively wide area, even if the passenger continues to sit for a long time, comfort can be maintained for a relatively long time compared to the conventional configuration.

  In the configuration shown in FIG. 2, grooves 212 a and 212 b that extend forward from the holes 211 a and 211 b filled with the fiber pads 214 a and 214 b and grooves 213 a that extend laterally (outside). 213b is shown as an example, but a groove extending rearward (saddle side) with respect to the passenger seated from the holes 211a and 211b, and an inner side with respect to the passenger seated from the holes 211a and 211b A groove portion extending in a straight line may be further formed.

  Further, in the configuration shown in FIG. 3A, the configuration in which the blowers 215a and 215b are attached to the holes 211a and 211b, respectively, has been described. However, the blowers may be shared. In this case, it attaches to a duct between one air blower and the holes 211a and 211b, and it exhausts from the holes 211a and 211b with this air blower through this duct.

  In addition, although the holes 211a and 211b are formed in the same shape from the surface on the side where the passenger sits on the urethane pad 21 on the seat cushion 2 side to the surface on the side where the blowers 215a and 215b are attached, As shown to 3B, you may form so that the cross section of the part 2111a, 2111b by which the air blower 215a, 215b is attached becomes small compared with the part above it. By forming the cross-sectional shapes of the holes 211a and 211b in this way, the fiber pads 214a and 214b filled in the holes 211a and 211b are located below the holes 211a and 211b, that is, on the sides of the blowers 215a and 215b. Can be prevented from shifting.

  Further, instead of the shape of the holes 211a and 211b shown in FIG. 3A, the diameter of the cross section on the side where the blowers 215a and 215b are attached as shown in FIG. 3C is the cross section on the side where the passenger of the urethane pad 21 is seated. The holes 2110a and 2110b may have tapered cross sections so as to be smaller than the diameter. By forming the cross-sectional shapes of the holes 2110a and 2110b in this way, the fiber pads 214a and 214b filled in the holes 2110a and 2110b are located below the holes 2110a and 2110b, that is, on the sides of the blowers 215a and 215b. Can be prevented from shifting. The same thing as FIG. 3C is applicable also about the case of the urethane pad 31 by the side of the seat back 3. FIG.

  3A to 3C show the configuration of the urethane pad 21 on the seat cushion 2 side, the urethane pad 31 on the seat back 3 side also has the same cross-sectional configuration, and the holes 311a and 311b are provided. The urethane pad 21 is inserted and fiber pads 314a and 314b are filled therein. A blower (not shown) is provided on the back side of the holes 311a and 311b of the urethane pad 21 (the side opposite to the side on which the occupant rests), as shown in FIGS. 3A to 3C. Is attached.

  By configuring the side of the seat back 3 in this manner, when the occupant is seated and seated back on the seat back 3, the blower attached to the back side of the holes 311a and 311b is operated. The container sucks air from the side of the fiber pads 314a and 314b where the passenger is seated and discharges the air from the back side of the urethane pad 31 to the outside. At this time, air is also sucked in from the groove portions 312a and 312b and the groove portions 313a and 313b, and air is sucked in from a portion where the back of the occupant seated on the seat back 3 hits and a relatively wide area around it.

  In the configuration shown in FIG. 2, grooves 312a and 312b extending upward with respect to the passenger seated from the holes 311a and 311b filled with the fiber pads 314a and 314b and grooves (313a) extending laterally (outside). 313b is formed, a groove portion extending downward with respect to the passenger seated from the holes 311a and 311b and a groove portion extending inward with respect to the passenger seated from the hole portions 311a and 311b are shown. Further, it may be formed.

  3B and 3C can be similarly applied to the urethane pad 31 on the seat back 3 side.

  The example in which the fiber portions 214a and 214b are filled in the holes 211a and 211b has been described. However, instead of the fiber pads 214a and 214b, a material having better air permeability than the urethane pads 21 and 31, such as a urethane pad, is fine. A material having air permeability formed by forming a large number of holes, 3D mesh, Airweave (registered trademark), Breath Air (registered trademark), or the like may be used. The same applies to the material filled in the holes 311a and 311b.

  Thus, by adopting a configuration in which air is sucked from a relatively wide area around the back of the occupant seated back on the seat back 3 and the periphery thereof, the seat surface is compared with the case where air is sucked only from the holes 211a and 211b. It is possible to relieve moisture and heat in a relatively wide area, and to increase the comfort of passengers. Further, since air is sucked from a relatively wide area, even if the passenger continues to sit for a long time, comfort can be maintained for a relatively long time compared to the conventional configuration.

  In the above-described embodiment, the case where the air is sucked by the blower from the portion where the back of the occupant seated on the seat back 3 hits and the relatively wide area around it is explained. It is also possible to blow out air from the blower to a portion where the back of the passenger seated in 3 hits and a relatively wide area around it.

  In the above-described embodiment, the example in which the hole portions 211a, 211b and 311a and 311b are filled with the fiber pads 214a, 214b and 314a and 314b in both the seat cushion 2 and the seat back 3 has been described. It may be applied to only one of the seat backs 3.

  A second embodiment of the present invention will be described with reference to FIGS. FIG. 4 is a plan view of the vehicle seat 1 in a state in which the trim cover that covers the surface of the vehicle seat 1 shown in FIG.

The difference from the first embodiment is that the grooves 212a, 212b and 213a, 213b formed in the urethane pad 21 on the seat cushion 2 side, and the grooves 312a, 312b formed on the urethane pad 31 on the seat back 3 side. And 313a and 313b are filled with fiber pads 216a and 216b and 316a and 316b, respectively.
About the same point as Example 1, explanation is omitted in order to avoid duplication.

  FIG. 5 shows a BB cross section of FIG. As in the case of the first embodiment, the holes 311 a and 311 b are formed through the urethane pad 21. Further, blowers 215a and 215b are attached to portions corresponding to the holes 211a and 211b on the back surface side (lower side in FIG. 3A) of the urethane pad 21, respectively. In addition, in FIG. 3A, the display of the member which connects the air blowers 215a and 215b and the urethane pad 21 is abbreviate | omitted.

  In the configuration shown in FIG. 5, fiber pads 214a and 214b are filled in the holes 211a and 211b, respectively. Further, a groove portion 213a is formed outward from the hole 211a on the upper surface side (upper side in FIG. 5) on which the passenger of the urethane pad 21 is seated, and the groove portion is formed outward from the hole 211b. 213b is formed.

  By configuring the side of the seat cushion 2 in this manner, when the blowers 215a and 215b are operated in a state where the passenger is seated, the blowers 215a and 215b are the sides on which the passenger is seated of the fiber pads 214a and 214b. Then, the air is sucked in and discharged from the back side (the lower side in FIG. 5) of the urethane pad 21 to the outside. At this time, air is also sucked in from the groove portions 212a and 212b and the groove portions 213a and 213b, and air is sucked from a relatively wide area below and around the thigh of the occupant seated on the seat cushion 2.

  In this way, by adopting a structure in which air is sucked from a relatively wide area under and around the thigh of the occupant seated on the seat cushion 2, moisture and hot air in a relatively wide area on the seat surface are relieved. And passenger comfort can be increased. Further, since air is sucked from a relatively wide area, even if the passenger continues to sit for a long time, comfort can be maintained for a relatively long time compared to the conventional configuration.

  Although FIG. 5 shows the configuration of the urethane pad 21 on the seat cushion 2 side, the urethane pad 31 on the seat back 3 side also has a similar cross-sectional configuration. That is, holes 311 a and 311 b are formed through the urethane pad 21 in the urethane pad 31. In addition, fiber pads 316a and 316b are filled in the hole 311a and the grooves 312a and 313a extending from the hole 311a and the holes 311b and the grooves 312b and 313b extending from the hole 311b. A blower (not shown) is attached to the back side of the holes 311a and 311b of the urethane pad 31 (the side opposite to the side on which the occupant is seated), as shown in FIG. ing.

  By configuring the side of the seat back 3 in this manner, when the occupant is seated and seated back on the seat back 3, the blower attached to the back side of the holes 311a and 311b is operated. The container sucks air from the side of the fiber pads 316a and 316b where the passenger is seated and discharges the air from the back side of the urethane pad 31 to the outside. As a result, air is sucked in from a portion where the back of the occupant seated on the seat back 3 hits and a relatively wide area around it.

  Thus, by adopting a configuration in which air is sucked in from a relatively wide area around the back of the passenger seated back on the seat back 3 and the periphery thereof, the seat surface is compared with the case where air is sucked only from the holes 311a and 311b. It is possible to relieve moisture and heat in a relatively wide area, and to increase the comfort of passengers. Further, since air is sucked from a relatively wide area, even if the passenger continues to sit for a long time, comfort can be maintained for a relatively long time compared to the conventional configuration.

  In the above-described embodiment, the case where the air is sucked by the blower from the portion where the back of the occupant seated on the seat back 3 hits and the relatively wide area around it is explained. It is also possible to blow out air from the blower to a portion where the back of the passenger seated in 3 hits and a relatively wide area around it.

  In the above-described embodiment, an example in which the hole portions 211a, 211b and 311a and 311b of both the seat cushion 2 and the seat back 3 and the fiber pads 216a, 216b and 316a and 316b are filled in the groove portions has been described. 2 or the seat back 3 may be applied to only one of them.

  Furthermore, in the structure shown in FIG. 5, although the structure which attaches the air blowers 215a and 215b corresponding to the hole parts 211a and 211b was demonstrated, you may make a fan common. In this case, it attaches to a duct between one air blower and the holes 211a and 211b, and it exhausts from the holes 211a and 211b with this air blower through this duct.

A third embodiment of the present invention will be described with reference to FIGS.
In Example 2, the grooves 212a, 212b, 213a, 213b and 312a, 312b, 313a, 313b formed in the urethane pad 21 on the seat cushion 2 side shown in FIG. 4 are perpendicular to the longitudinal direction of the grooves. Have the same cross-sectional shape. FIG. 6 shows an example of the cross-sectional shape of the groove 212b. The groove 212b has a rectangular cross-sectional shape.

  When such a groove portion has a rectangular cross-sectional shape, when the occupant sits on the seat cushion 2, the dent of the groove portion may be felt and the seating comfort may deteriorate.

  In contrast, in this embodiment, as shown in FIGS. 7 to 9, the size of the opening of the groove on the side of the surface on which the occupant sits is smaller than the size of the lower portion. Formed as follows. That is, by setting the opening size of the opening of the groove when no load is set so that the occupant seated on the seat cushion 2 does not feel the dent of the groove, the sitting occupant feels comfortable due to the dent. I tried to prevent the deterioration.

  FIG. 7 shows a groove 222 having a cross-sectional shape close to a trapezoid. In FIG. 7, the groove 222 formed in the urethane pad 21-1 has a shape close to a trapezoid whose bottom surface has a larger size than the upper opening. The groove part 222 has a cross-sectional shape whose opening is narrower than the space part inside the groove part 222 formed inside the urethane pad 21-1. A fiber pad 216 is filled in a space portion inside the groove portion 222.

  Here, when a passenger sits on the seat cushion 2, the flexible urethane pad 21-1 is compressed and deformed by the weight of the passenger, and the groove portion 222 is also deformed. At this time, the groove portion 222 has a shape in which the upper portion (opening portion) is narrower than the bottom portion, and is formed so that the wall thickness gradually decreases as it approaches the upper portion in the cross section. When it receives, it tends to deform | transform large greatly in the direction where the width of an opening part narrows, As a result, the dimension of an opening part becomes narrow. On the other hand, the dimension of the bottom of the groove 222 is almost the same as that before the passenger is seated. As a result, in the groove portion 222, a space through which air passes is ensured even when a load is applied, so that air can be supplied to the tip portion of the groove portion 222 and exhausted.

  On the other hand, the opening of the groove 222 is deformed in a direction in which the opening dimension (width) is reduced when the passenger's weight is received, but the opening dimension at the time of deformation is such that the seated passenger does not feel a dent. By setting the opening size of the opening portion at no load so as to be the size, it is possible to prevent the seated passenger from deteriorating the sitting comfort due to the depression.

  FIG. 8 is an example in which the cross-sectional shape of the groove portion 231 is changed with respect to FIG. The cross-sectional shape of the groove 232 formed in the urethane pad 21-2 in FIG. 8 is a shape in which the thickness gradually decreases from both sides and an opening is formed in the center at the upper part of the rectangular space. That is, the opening formed in the upper part of the groove part 232 has a cross-sectional shape narrower than the space part of the groove part 232 formed in the inside of the urethane pad 21-2. In such a shape of the groove portion 232, when the occupant sits on the seat cushion 2, the bottom portion of the groove portion 232 is greatly deformed in a direction in which the width of the opening formed in the upper portion of the groove portion 232 is narrowed. The dimensions are almost the same as when there is no load when the passenger is not seated. As a result, in the groove portion 232, a space through which air can pass is ensured even when the occupant is seated, so that air can be supplied or exhausted to the tip portion of the groove portion 232. A fiber pad 216 is filled in a space portion inside the groove portion 232.

  In addition, the opening formed in the upper part of the groove 232 is deformed in a direction in which the opening dimension (width) is reduced when a load is applied, but the opening dimension at the time of the deformation does not cause the seated passenger to feel a dent. By setting the opening size of the opening at the time of no load so as to be the size, it is possible to prevent the seated passenger from deteriorating the sitting comfort due to the depression.

  FIG. 9 is an example in which the cross-sectional shape of the groove portion 231 is changed with respect to FIG. The cross-sectional shape of the groove 242 in FIG. 9 is a shape in which the thickness is gradually reduced from both sides and an opening is formed in the center in the upper part of the space of the circular cross section. That is, the groove part 242 has a cross-sectional shape in which the opening formed in the upper part is narrower than the widest part of the space part inside the groove part 242 inside the urethane pad 21-3. Also in the groove portion 242 shown in FIG. 9, when the occupant sits on the seat cushion 2, the opening portion is greatly deformed in a direction in which the width of the opening portion is narrowed, whereas the occupant is seated at the bottom of the groove portion 242. The dimensions are almost the same as when no load is not seated. As a result, in the groove portion 242, a space through which air passes is secured even when a passenger is seated on the seat cushion 2 and a load is applied, so that air can be supplied or exhausted to the tip portion of the groove portion 242. The space portion inside the groove portion 242 is filled with a fiber pad 216.

  Further, the opening of the groove 242 is deformed in a direction in which the opening dimension (width) is reduced when a load is applied, but the opening dimension at the time of deformation is such that the seated passenger does not feel a dent. By setting the opening size of the opening when there is no load, it is possible to prevent the seated passenger from deteriorating the sitting comfort due to the dent.

  According to the present embodiment, for example, in the configuration shown in FIG. 7, in the cross-sectional shape of the groove 222 formed in the urethane pad 21-1, the cross-sectional shape of the opening provided on the side on which the passenger sits above the groove 222. From a relatively wide area under and around the thigh of the occupant seated on the seat cushion 2 by making the shape gradually thinner from the outside toward the center of the opening. It becomes possible to inhale air. By adopting such a configuration, moisture and heat in a relatively wide area on the seat surface can be relieved, and passenger comfort can be increased. Further, since air is sucked from a relatively wide area, even if the passenger continues to sit for a long time, comfort can be maintained for a relatively long time compared to the conventional configuration.

  The degree of deformation of the grooves 222, 232, and 242 varies depending on the load, that is, the weight of the seated occupant and the seating position, and the grooves 222, 232, and 242 are greatly deformed in places where a large load is applied. The width of the opening of each of the openings is narrow, and in a place where the load is small, the grooves 222, 232, and 242 are hardly deformed, and the opening size of each opening is not so narrow. Along with this, there is a distribution in the amount of air blown out or sucked from each opening, and in places where a large load is applied, the amount of air blown out or sucked in from the opening is small, and in places where the load is relatively small The amount of air blown out or sucked from the opening increases.

  As described above, the amount of air blown out or sucked in from the opening in a place where the load is relatively small increases, so that the coolness of the seated occupant can be increased and the bodily sensation can be improved.

  In addition, even if it is a place where a large load is applied and the cross section of the groove 222, 232, or 242 is greatly deformed, the air passage space is secured as described above, so that the air is sent from the blower 215a or 215b. The air can be spread over the entire groove 222, 232, or 242 without great resistance. Further, when air is sucked from the groove portions 222, 232, or 242 with the blower 215a or 215b, the air can be sucked without a large resistance. Therefore, even if an axial fan is used as the blowers 214a and 215b instead of the sirocco fan, a sufficient air volume can be secured over the entire groove 222, 232, or 242.

  In the present embodiment, as in the case of the second embodiment, an example in which the fiber pad 216 is filled in the space portion inside the groove portion 222, 232, or 242 has been described, but as described in the first embodiment, The present invention can also be applied to the case where the fiber pad 216 is not filled in the space portion inside the groove portions 222, 232, or 242.

  As mentioned above, although the invention made by the present inventor has been specifically described based on the embodiments, it is needless to say that the present invention is not limited to the above embodiments and can be variously modified without departing from the gist thereof. Yes. That is, the present invention includes a configuration in which a part of the configuration described in the above embodiment is replaced with a unit having a function equivalent to that, or a configuration in which a part of a function that is not substantial is omitted.

  DESCRIPTION OF SYMBOLS 1 ... Vehicle seat 2 ... Seat cushion 3 ... Seat back 4 ... Headrest 21, 21-1, 21-2, 21-3, 31 ... Urethane pad 211a, 211b, 311a, 311b ... holes 212a, 212b, 213a, 213b, 312a, 312b, 313a, 313b ... grooves 214a, 214b, 216a, 216b ... fiber pads 216 ... fiber pads 222,232,242 ...・ Groove

Claims (8)

A vehicle seat having a seat cushion, a seat back, and a headrest,
Each of the seat cushion and the seat back has a urethane pad,
Each of the urethane pads is formed with a hole that leads from a surface on the side where the occupant is seated to a surface opposite to the surface on which the occupant is seated,
The inside of the hole formed in each of the urethane pads is filled with a material having air permeability as compared with the urethane pad,
A plurality of grooves extending from the holes are formed on the surface of each urethane pad on the side on which the passenger sits,
The passengers of the respective urethane pads are inserted through the holes filled with the air-permeable material on the surface of the respective urethane pads opposite to the surface on which the passengers sit. A vehicle seat comprising a blower that exhausts or sucks air from a surface on the side on which the seat is seated.   2. The vehicle seat according to claim 1, wherein the material having air permeability as compared with the urethane pad filled in the hole formed in each of the urethane pads is minute on the fiber pad and the urethane pad. A vehicle seat characterized by being a material having air permeability formed by forming a large number of holes, 3D mesh, air weave, breath air, or a combination thereof.   3. The vehicle seat according to claim 2, wherein a plurality of grooves extending from the hole portion formed on a surface on which the occupant is seated have a hole portion formed in each of the urethane pads. A vehicle seat characterized by being filled with a material that is more breathable than the urethane pad filled inside.   3. The vehicle seat according to claim 2, wherein a cross section of the plurality of grooves extending from the hole portion formed on the surface on the side where the occupant sits is perpendicular to the longitudinal direction of the groove. The vehicle seat has an opening on a surface on which the seat is seated, and the width of the groove below the opening is formed larger than the width of the opening. .   The vehicle seat according to claim 4, wherein the groove is filled with the same material as the material having air permeability as compared with the urethane pad filled in the hole formed in each urethane pad. A vehicle seat characterized by being made. A vehicle seat having a seat cushion, a seat back, and a headrest,
Each of the seat cushion and the seat back has a urethane pad,
The urethane pad of at least one of the seat cushion and the seat back is formed with a hole portion that leads from the surface on the side where the occupant is seated to the surface opposite to the surface on which the occupant is seated,
The inside of the hole formed in the urethane pad is filled with a material having air permeability compared to the urethane pad,
A surface of the urethane pad on which the occupant sits has a groove extending from the hole having an opening on the surface on which the occupant is seated, and extending from the hole of the groove A groove having a larger width dimension inside the urethane pad than a width dimension of the opening is formed in a cross section in a direction perpendicular to the direction,
A vehicle seat comprising a blower on a surface of each of the urethane pads opposite to a surface on which the passenger is seated.   The vehicle seat according to claim 6, wherein the material having air permeability as compared with the urethane pad filled in the hole portion formed in the urethane pad has a minute hole in the fiber pad and the urethane pad. A vehicular seat characterized by being made of a large number of breathable materials, 3D mesh, air weave, breath air, or a combination of them.   The vehicle seat according to claim 6, wherein the groove is filled with the same material as the material having air permeability as compared with the urethane pad filled in the hole formed in each urethane pad. A vehicle seat characterized by being made.

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