Seat

Abstract

To provide a seat capable of suppressing deviation of a cover member to a pad body.SOLUTION: A seat comprises a pad which has a ventilation path 1A and a blowing port 1B, and has a pad body 200 and a cover member 20 where the blowing port 1B is formed, and in which the ventilation path 1A is formed between the pad body 200 and the cover member 20 by arranging the cover member 20 so as to cover the pad body 200. The seat is configured so that air flows through the ventilation path 1A and the blowing port 1B. The pad body 200 has: a first body part 210; and a second body part 220 arranged between the cover member 20 and the first body part 210. The first body part 210 has on a top face: a first recess 11; and a second recess 12 formed around the first recess 11, and having a bottom face which is located on an upper side of a bottom face of the first recess 11. The second body part 220 is arranged on the first recess 11, and the cover member 20 is arranged on the second recess 12.SELECTED DRAWING: Figure 12

Description

[Technical field]

[0001] The present invention relates to a seat configured to be able to blow air from a seat cushion. [Background technology]

[0002] Conventionally, there has been known a seat having an air conditioning function configured to be able to blow air to a seated person from a seat cushion. For example, Patent Document 1 discloses a vehicle seat configured such that a seat cushion pad is divided into two, an upper pad having an air outlet for blowing out air, and an upper pad having an air outlet for blowing out air is placed on a lower pad, thereby forming an air passage through which air is blown from a blower between the upper and lower pads. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2004-215810 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the conventional configuration, when a person sits on the seat cushion, the pads deform, causing the front end of the upper pad to rise, which can create a step near the boundary between the upper and lower pads at the front end of the pad. If this step hits the legs or the like, the seating feeling is reduced. It is desirable for the seat not to reduce the seating feeling, not just in such a case.

[0005] The present invention has been made in view of the above background, and has an object to provide a seat that can improve seating feeling. Another object of the present invention is to prevent the cover member from shifting relative to the pad body. Another object is to ensure a sufficient cross-sectional area for the ventilation passage. [Means for solving the problem]

[0006] A seat for achieving the above-mentioned objective comprises a seat cushion pad having an air passage formed therein and an air outlet formed on the upper surface, and is configured so that air in the air passage can be blown out from the air outlet, wherein the seat cushion pad has a pad body and a cover member disposed on top of the pad body to form the air passage between the pad body and the cover member and in which the air outlet is formed, and the front end of the cover member extends downward so as to cover the front end of the pad body.

[0007] With this configuration, even if the front end of the cover member is lifted up when the occupant is seated, no step is created at the front end of the seat cushion pad, thereby improving the seating feeling.

[0008] In the above-mentioned sheet, a convex portion may be formed on one of the upper surface of the pad body and the lower surface of the cover member, and a positioning concave portion that fits into the convex portion may be formed on the other.

[0009] This can prevent the cover member from shifting relative to the pad body.

[0010] In the above-mentioned seat, the convex portion is formed on the upper surface of the pad main body, the positioning recess is formed on the lower surface of the cover member, and the left-right width of the convex portion and the positioning recess can be configured to be larger on the front side than on the rear side.

[0011] This makes it possible to effectively prevent the cover member from shifting forward relative to the pad body.

[0012] In addition, in the above-mentioned seat, the convex portion may be formed on the underside of the cover member, the positioning recess may be formed on the upper surface of the pad main body, and the left-right width of the convex portion and the positioning recess may be larger on the rear side than on the front side.

[0013] This also makes it possible to effectively prevent the cover member from shifting forward relative to the pad main body.

[0014] In the above-described seat, the protrusion and the positioning recess may be configured to be formed in a left-right central portion of a front portion of the seat cushion pad.

[0015] This makes it difficult for a load to be applied from directly above to the portions where the protrusions and positioning recesses are formed, thereby preventing significant deformation of the protrusions and positioning recesses. This allows the protrusions and positioning recesses to be kept in a good engagement state, thereby further preventing the cover member from shifting relative to the pad body.

[0016] In the above-described seat, the pad body and the cover member may each have ventilation recesses that face each other and form the ventilation path.

[0017] This ensures a sufficient cross-sectional area for the ventilation path compared to a configuration in which no ventilation recess is formed in one of the pad body and the cover member.

[0018] In the above-described sheet, the pad body may have a first recess formed on its upper surface, and the cover member may have a cover body that engages with the first recess to form the air passage between the cover body and the pad body, and an extending edge portion that extends horizontally outward from at least one side of the peripheral portion of the cover body beyond the edge of the first recess.

[0019] With this configuration, even if a gap occurs between the cover body and the pad body, the extended edge portion and the pad body come into contact with each other to seal the gap, thereby preventing air leakage from the ventilation passage. In addition, since the contact area between the pad body and the cover member can be increased, a gap itself is less likely to occur between the pad body and the cover member, which also prevents air leakage from the ventilation passage.

[0020] The seat described above may include a cover material that is placed on the seat cushion pad, and a cover attachment member that can be engaged with an engagement portion provided on the cover material is provided on the pad body horizontally outboard of the first recess, and the extended edge portion may extend to the vicinity of the cover attachment member to form part of an opening for engaging the engagement portion with the cover attachment member.

[0021] According to this, the extended edge portion can be held relatively firmly by the skin material attached to the skin attachment member, which makes it more difficult for a gap to form between the pad main body and the cover member, thereby more effectively suppressing air leakage from the ventilation passage.

[0022] In the above-described sheet, the extended edge portions may be configured to extend from left and right sides of a peripheral portion of the cover body.

[0023] With this, even if the left and right extended edge portions rise up when sitting, this will occur at a position far away from the occupant, thereby preventing any deterioration in the seating feeling.

[0024] In the above-described seat, the pad main body can be configured to have protruding portions on both the left and right sides of the cover member that protrude above the cover member, and the extended edge portions can extend to a position facing the protruding portions.

[0025] With this, even if the left and right extended edge portions rise up when seated, the seat occupant will not feel uncomfortable, thereby improving the seating feeling.

[0026] In the above-mentioned sheet, the extended edge portion may be configured to extend from a front side of the peripheral portion of the cover body to at least a front end portion of the pad body.

[0027] According to this, since there is no boundary between the front extended edge portion and the pad body on the upper surface of the seat cushion pad, no step is formed in the front part of the upper surface of the seat cushion pad when sitting, which makes it possible to suppress deterioration of the seating feeling.

[0028] In the above-described seat, the pad body and the cover member may each have ventilation recesses that face each other and form the ventilation path.

[0029] This ensures a sufficient cross-sectional area for the ventilation path compared to a configuration in which no ventilation recess is formed in one of the pad body and the cover member.

[0030] In addition, in the above-mentioned seat, the pad body may have a first body portion and a second body portion arranged between the first body portion and the cover member, overlapping an upper surface of the first body portion and having a front end portion extending downward.

[0031] According to this, even if the pad body is composed of two parts, the first body portion and the second body portion, and even if the front end portion of the second body portion rises up when sitting down, no step is created at the front part of the upper surface of the seat cushion pad, thereby improving the seating feeling.

[0032] In the above-described seat, the first main body portion may have a step at its front end that is lowered toward the front, and at least one of the front end of the second main body portion and the front end of the cover member may be in contact with an upward-facing surface that is located forward of the step of the first main body portion.

[0033] This can prevent the second main body portion or the cover member from shifting downward. [Brief description of the drawings]

[0034] [Figure 1] 1 is a perspective view of a vehicle seat as an example of a seat according to an embodiment; [Diagram 2]FIG. [Diagram 3] FIG. [Figure 4] 4 is a cutaway perspective view of the cover member as viewed from the bottom side. FIG. [Diagram 5] 4 is a cross-sectional view of the seat cushion corresponding to the cross section taken along line XX in FIG. 3. [Figure 6] 4 is a cross-sectional view of the seat cushion pad corresponding to the YY cross section of FIG. 3. [Figure 7] 5A is a diagram illustrating the function and effect of the extended edge portion of the vehicle seat according to the embodiment, and FIG. 5B is a diagram illustrating a comparative example. [Figure 8] 10A to 10C are diagrams illustrating the effects of the positioning protrusions and the positioning recesses of the vehicle seat according to the embodiment. [Figure 9] 13 is a cutaway perspective view of a pad body and a cover member according to a modified example, as viewed from the bottom side. FIG. [Figure 10] 10A and 10B are diagrams illustrating the effects of positioning protrusions and positioning recesses of a vehicle seat according to a modified example. [Figure 11] FIG. 11 is an exploded perspective view of a seat cushion pad according to a second modified example. [Figure 12] 11 is a cross-sectional view of a seat cushion pad according to a second modified example taken along a vertical plane extending in the left-right direction. FIG. [Figure 13] 11 is a cross-sectional view of a seat cushion pad according to a second modified example taken along a vertical plane extending in the front-rear direction. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0035] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings as appropriate. As shown in FIG. 1, the seat according to this embodiment is configured as a vehicle seat S for use as a driver's seat or a passenger seat in an automobile, and mainly includes a seat cushion S1 on which an occupant sits, a seat back S2 that supports the upper body of the occupant, and a headrest S3 that can support the head of the occupant.

[0036] The seat cushion S1 mainly comprises a metal frame (not shown), a seat cushion pad 1 made of a cushioning material such as urethane foam, and a cover material 2 made of synthetic leather, fabric, or the like, and is constructed by covering the frame with the seat cushion pad 1 and then covering the seat cushion pad 1 with the cover material 2.

[0037] Although the detailed configuration will be described later, the seat cushion pad 1 has an air passage 1A (see Fig. 5) formed inside and multiple air outlets 1B formed on the upper surface, and is configured so that air sent into the air passage 1A from a blower (not shown) or the like can be blown toward the occupant from the air outlets 1B as shown by the arrows in Fig. 1. Although not shown, if the covering material 2 is made of a material with low air permeability, holes for passing air are formed in the covering material 2 at positions corresponding to the air outlets 1B.

[0038] 2, the seat cushion pad 1 mainly includes a pad main body 10 that is placed on the frame of the seat cushion S1, and a cover member 20 having a plurality of air outlets 1B formed on the upper surface. The pad main body 10 and the cover member 20 may be made of the same material or different materials.

[0039] An engagement recess 10A is formed in the front portion of the left-right center of the upper surface of the pad main body 10, which is recessed from the rear portion, i.e., the rear portion, and can engage with the cover member 20. As shown in Fig. 3, the engagement recess 10A is composed of a first recess 11 and a second recess 12 formed around the first recess 11 and one step higher than the bottom 11A of the first recess 11. Inside the first recess 11, a main body side ventilation recess 15 having a recessed shape relative to the bottom 11A and a positioning protrusion 16 as a protrusion according to the present invention protruding upward from the bottom 11A are mainly formed.

[0040] The main body side ventilation recess 15 is a groove that faces a cover side ventilation recess 25 (see FIG. 5) of the cover member 20 described later to form the ventilation path 1A, and is formed in a generally U-shape in plan view. A through hole 15A that passes vertically through the pad main body 10 is formed near the center in the left-right direction of this main body side ventilation recess 15. The through hole 15A is a hole for sending air into the ventilation path 1A.

[0041] The positioning protrusion 16 is disposed near the center in the left-right direction of the front part of the bottom 11A. The positioning protrusion 16 is formed in a generally trapezoidal shape in plan view with tapered sides such that the left-right width is greater on the front side than on the rear side.

[0042] As shown in FIG. 3 and FIG. 5, the pad body 10 has overhanging parts 10S overhanging the upper surfaces of the cover member 20 and the central rear part 10B on both the left and right sides of the engagement recess 10A (cover member 20) and the central rear part 10B. Also, at both the left and right ends of the pad body 10, a skin mounting wire 50 is provided as an example of a skin mounting member with which a hook-shaped engagement part 2H provided on the skin material 2 can be engaged. More specifically, the skin mounting wire 50 extends along the front-rear direction, is horizontally (left-right) outboard of the first recess 11, and is disposed in a state of being embedded in the pad body 10 near the boundary between the overhanging part 10S and the engagement recess 10A. A part of the skin mounting wire 50 is exposed from a hole 10C formed in the pad body 10, and the skin material 2 is fixed to the pad body 10 (seat cushion pad 1) by engaging the engagement part 2H of the skin material 2 with this exposed part.

[0043] As shown in Figures 4 and 5, the cover member 20 is a member that is disposed on the pad body 10 by engaging with the engagement recess 10A of the pad body 10 without being bonded, thereby forming an air passage 1A between the pad body 10 and the cover member 20, and mainly has a cover body 21, an extended edge portion 22, and a front end portion 23 (see Figure 6). As shown in Figure 6, the upper surface of the cover member 20 engaged with the engagement recess 10A is substantially flush with the upper surface of the central rear portion 10B of the pad body 10. Note that Figure 4 is a perspective view of the cover member 20 as seen from the bottom side, but in order to clearly show the cover side ventilation recess 25 and the positioning recess 26 described later, the front end portion 23 is shown in a broken state.

[0044] 4 and 5, the cover body 21 is a portion that mainly has its lower portion engaged with the first recess 11 of the pad body 10 to form an air passage 1A between the cover body 21 and the pad body 10. A cover-side ventilation recess 25 and a positioning recess 26 are formed on the lower surface of the cover body 21.

[0045] The cover-side ventilation recess 25 is a groove that faces the main body-side ventilation recess 15 to form an air passage 1A between the cover member 20 and the pad main body 10 when the cover member 20 engages with the engagement recess 10A of the pad main body 10, and is formed in a generally U-shape in plan view, similar to the main body-side ventilation recess 15. A plurality of communication holes 25A that communicate with the air outlet 1B are formed in the bottom surface of the cover-side ventilation recess 25. Air sent into the air passage 1A passes through the communication holes 25A and is blown from the air outlet 1B.

[0046] The positioning recess 26 is a recess that fits into the positioning protrusion 16 of the pad body 10, and is disposed near the center in the left-right direction of the front part of the underside of the cover body 21. Like the positioning protrusion 16, the positioning recess 26 is formed in a generally trapezoidal shape in plan view such that its left-right width is greater on the front side than on the rear side.

[0047] As shown in FIG. 4, the extended edge portion 22 is a portion that extends from the upper portion of each side of the peripheral portion of the cover body 21 so as to protrude horizontally outward (outward in the front-rear direction or outward in the left-right direction) beyond the edge of the first recess 11. The extended edge portion 22 is composed of a left edge portion 22L and a right edge portion 22R extending from the left and right sides of the peripheral portion of the cover body 21, a front edge portion 22F extending from the front side of the peripheral portion of the cover body 21, and a rear edge portion 22B extending from the rear side of the peripheral portion of the cover body 21, and the front edge portion 22F, the left edge portion 22L, the rear edge portion 22B, and the right edge portion 22R are continuously formed in a substantially flange shape so as to surround the cover body 21. When the cover member 20 engages with the engagement recess 10A of the pad body 10, the extended edge portion 22 enters the second recess 12 of the pad body 10.

[0048] As shown in Fig. 5, the left edge 22L and the right edge 22R each extend to a position facing the overhanging portion 10S of the pad body 10. More specifically, the left edge 22L and the right edge 22R each extend to the vicinity of the skin attachment wire 50, and their end faces form part of the wall of the hanging groove 1C as an example of an opening for hanging the skin material 2 between the pad body 10 and for engaging the engagement portion 2H of the skin material 2 with the skin attachment wire 50. Also, as shown in Fig. 6, the front edge 22F extends forward of the front end portion 10F of the pad body 10.

[0049] The front end portion 23 is a portion that continues from the front edge portion 22F and extends downward along the front end portion 10F of the pad body 10. In other words, the front end portion 23 extends downward so as to cover the front end portion 10F of the pad body 10 from the front side.

[0050] Next, the effects of the vehicle seat S configured as above will be described. 7(b) shown for reference is a seat cushion S101 configured by covering a seat cushion pad 101 with a cover material 102. The seat cushion pad 101 of the seat cushion S101 has a pad main body 110 and a flat cover member 120 fitted into a recess 110A formed on the upper surface of the pad main body 110, and an air passage 101A is formed between the pad main body 110 and the cover member 120.

[0051] In the comparative example shown in Fig. 7(b), when an occupant sits on the seat cushion S101, the center of the cover member 120 in the left-right direction sinks and deforms into a bow when viewed from the front, causing its peripheral portion to rise up from the pad body 110. This creates a step between the end of the cover member 120 and the pad body 110, and this step hits the occupant through the skin material 102, degrading the seating feeling. In addition, a gap is created between the end of the cover member 120 and the pad body 110, and air in the air passage 101A may leak from this gap.

[0052] On the other hand, in the present embodiment shown in Fig. 6 and Fig. 7(a), the cover member 20 has an extended edge portion 22 extending from the periphery of the cover body 21, so that even if a gap occurs between the end of the cover body 21 and the pad body 10, the extended edge portion 22 comes into contact with the pad body 10 to seal the gap, thereby suppressing air leakage from the ventilation path 1A. In addition, the extended edge portion 22 extending from the periphery of the cover body 21 increases the contact area between the pad body 10 and the cover member 20, so that a gap itself is less likely to occur between the pad body 10 and the cover member 20, which also suppresses air leakage from the ventilation path 1A.

[0053] Furthermore, the left edge 22L and the right edge 22R of the extended edge 22 extend close to the skin attachment wire 50 to form part of the hanging groove 1C for engaging the skin material 2, and are therefore held relatively firmly by the skin material 2 attached to the skin attachment wire 50. This makes it more difficult for a gap to form between the pad main body 10 and the cover member 20, thereby further suppressing air leakage from the ventilation path 1A.

[0054] 6, the front edge 22F of the extended edge 22 extends to the front end 10F of the pad body 10, so there is no boundary between the front edge 22F and the pad body 10 on the upper surface of the seat cushion pad 1. As a result, even if the front edge 22F rises up when sitting, no step is created in the front part of the upper surface of the seat cushion pad 1, so that deterioration of the seating feeling can be suppressed.

[0055] In addition, in this embodiment, since the front end 23 of the cover member 20 extends downward so as to cover the front end 10F of the pad main body 10, even if the front end 23 is lifted up when sitting, no step is formed at the front end of the seat cushion pad 1. This improves the seating feeling.

[0056] Furthermore, as shown in FIG. 7(a), the left side edge 22L and the right side edge 22R of the extended edge 22 extend from the left and right sides of the peripheral portion of the cover body 21 and are away from the occupant. Therefore, even if the left side edge 22L and the right side edge 22R rise up when sitting down, this will occur at a position far away from the occupant, thereby preventing a deterioration in the seating feeling.

[0057] Furthermore, since the left edge portion 22L and the right edge portion 22R extend to a position facing the protruding portion 10S of the pad main body 10, even if the left edge portion 22L and the right edge portion 22R are lifted up when the occupant sits down, the occupant does not feel uncomfortable. This can improve the seating feeling. As described above, the left edge portion 22L and the right edge portion 22R are relatively firmly held down by the skin material 2, so that they are unlikely to lift up in the first place, and the seating feeling can be further improved.

[0058] In the comparative example shown in FIG. 7(b), the center of the cover member 120 in the left-right direction sinks when the user sits down, and the peripheral portion is pulled toward the center, so that a gap is likely to be formed between the end face of the cover member 120 and the pad body 110. This makes the end of the cover member 120 more likely to float up, resulting in a step or a gap. On the other hand, in the present embodiment shown in FIG. 7(a), a gap is unlikely to be formed between the end face of the cover body 21 and the pad body 10, particularly on both the left and right sides of the portion where the positioning protrusion 16 and the positioning recess 26 are formed. This is because, even if the center of the cover member 20 in the left-right direction sinks and the peripheral portion is pulled toward the center, the side of the positioning recess 26 hits the side of the positioning protrusion 16, so that the portion of the peripheral portion of the cover member 20 outside the positioning recess 26 is unlikely to be pulled toward the center. This prevents the ends of the cover member 20 from floating up, thereby further improving the seating feeling, and also prevents gaps from forming between the ends of the cover member 20 and the pad main body 10, thereby further preventing air leakage from the air passage 1A.

[0059] Furthermore, in this embodiment, the positioning protrusion 16 formed on the upper surface of the pad body 10 and the positioning recess 26 formed on the lower surface of the cover member 20 engage with each other, thereby making it possible to suppress misalignment of the cover member 20 relative to the pad body 10 even in a configuration in which the pad body 10 and the cover member 20 are not bonded with an adhesive or the like.

[0060] In particular, in this embodiment, as shown in Figure 8, the positioning convex portion 16 and the positioning concave portion 26 are formed in a roughly trapezoidal shape in a plan view, with the left-right width being greater at the front than at the rear, so that when they are fitted together, the left and right surfaces essentially interlock, thereby effectively suppressing forward shifting of the cover member 20 relative to the pad main body 10.

[0061] In addition, in this embodiment, the positioning protrusion 16 and the positioning recess 26 are formed in the left-right central portion of the front portion of the seat cushion pad 1, in other words, near the position corresponding to the space between the left and right thighs of the occupant, so that a load is unlikely to be applied from directly above to the portions where the positioning protrusion 16 and the positioning recess 26 are formed. Therefore, since large deformation of the positioning protrusion 16 and the positioning recess 26 can be suppressed, the engagement state between the positioning protrusion 16 and the positioning recess 26 can be maintained in a good state, and the displacement of the cover member 20 with respect to the pad main body 10 can be further suppressed.

[0062] 5, in this embodiment, both the pad body 10 and the cover member 20 have the ventilation recesses 15, 25 for forming the ventilation passage 1A, so that the cross-sectional area of ​​the ventilation passage 1A can be secured, compared to a configuration in which only one of them has a ventilation recess. This makes it possible to secure a space for air to pass through inside the seat cushion pad 1, which is deformed by the passenger sitting on it.

[0063] Although the embodiment of the present invention has been described above, the present invention is not limited to the above embodiment. The specific configuration can be appropriately changed as described below without departing from the spirit of the present invention.

[0064] In the above embodiment, the positioning protrusion 16 is formed on the upper surface of the pad body 10, and the positioning recess 26 is formed on the lower surface of the cover member 20, but this is not limited thereto. For example, as shown in FIG. 9, the positioning recess 17 may be formed on the upper surface of the pad body 10, and the positioning protrusion 27 may be formed on the lower surface of the cover member 20. In this case, it is preferable that the width in the left-right direction of the positioning recess 17 and the positioning protrusion 27 is larger on the rear side than on the front side, contrary to the above embodiment. According to this, as shown in FIG. 10, the left and right surfaces mesh with each other when they are fitted together, so that the forward shift of the cover member 20 relative to the pad body 10 can be effectively suppressed.

[0065] In the above embodiment and the embodiment shown in Fig. 9, the positioning protrusions 16, 27 and the positioning recesses 26, 17 are formed as inclined surfaces with substantially flat left and right surfaces, but are not limited thereto, and may be formed as stepped surfaces having one or more steps. In the above embodiment and the embodiment shown in Fig. 9, the positioning protrusions 16, 27 and the positioning recesses 26, 17 are formed as a pair in the left-right central portion of the front portion of the seat cushion pad 1, but are not limited thereto. For example, the positioning protrusions and the positioning recesses may be formed in a portion other than the left-right central portion of the front portion of the seat cushion pad, or two or more pairs may be formed.

[0066] In the above embodiment, the extending edge portion 22 is formed to extend from each side of the peripheral portion of the cover body 21 so as to surround the cover body 21, but is not limited to this. For example, the extending edge portion may be formed to extend only from the left and right sides of the peripheral portion of the cover body, or may be formed to extend only from the front side of the peripheral portion of the cover body.

[0067] In the above embodiment, the ventilation recesses 15, 25 that form the ventilation passage 1A are formed in both the pad body 10 and the cover member 20, but this is not limited to this. For example, the ventilation recesses may be formed only in the pad body, or only in the cover member.

[0068] In the above embodiment, the pad body 10 is configured as one part, but the configuration of the pad body is not limited to this. For example, as shown in Fig. 11, the pad body 200 may be configured as two parts, a first body part 210 and a second body part 220 disposed between the first body part 210 and the cover member 20.

[0069] Specifically, the first main body portion 210 has an engagement recess 10A having the first recess 11, a central rear portion 10B, and a protruding portion 10S, similar to the pad main body 10 in the above embodiment. The first main body portion 210 has a through hole 211 penetrating vertically at the rear of the first recess 11. The bottom surface 212 of the first recess 11 has no irregularities other than the through hole 211, and is formed in a substantially flat shape.

[0070] Moreover, the first main body 210 is provided at its front end with a front step 213 as an example of a step with a lower front side. Specifically, the first main body 210 is provided at the lower part of its front end with a protruding portion 230 that protrudes to the front side. The protruding portion 230 is provided from the left end to the right end of the first main body 210. The protruding portion 230 has an upwardly facing abutting surface 231 that is provided at a position lower than the bottom surface 212 of the first recess 11. The portion between the bottom surface 212 of the first recess 11 of the first main body 210 and the abutting surface 231 forms the front step 213.

[0071] The second main body portion 220 has a rectangular air passage forming portion 220A that overlaps with the upper surface of the first main body portion 210, more specifically, the bottom surface 212 of the first recess 11, and a front end portion 220B that extends downward and forward from the air passage forming portion 220A. The second main body portion 220 may be made of the same material as the first main body portion 210 or the cover member 20, or may be made of a different material.

[0072] The ventilation path forming part 220A is formed with a ventilation groove 221 penetrating vertically. This ventilation path forming part 220A is disposed on the first recess 11, so that the ventilation groove 221 and the bottom surface 212 of the first recess 11 form a main body side ventilation recess 15, as shown in FIG.

[0073] Returning to FIG. 11, the ventilation groove 221 has a first ventilation groove 221A formed in an approximately U-shape when viewed from above, and a second ventilation groove 221B extending from a position overlapping with the through hole 211 of the second main body portion 220 and connecting to the first ventilation groove 221A.

[0074] 13, the front end 220B of the second main body portion 220 is provided so as to cover a part of the front step 213 of the first main body portion 210, and the lower end is in contact with the abutment surface 231 of the protruding portion 230. In addition, the rear end (rear end 222 of the air passage forming portion 220A) of the second main body portion 220 is in contact with the rear step 214, which is the step between the first recess 11 of the first main body portion 210 and the central rear portion 10B.

[0075] 12, unlike the above embodiment, the cover member 20 does not have a cover-side ventilation recess on the lower surface and is formed in a substantially flat plate shape. The lower surface of this cover member 20 forms an air passage 1A together with the main body-side ventilation recess 15. The cover member 20 has a plurality of air outlets 1B formed at positions overlapping with the main body-side ventilation recess 15. The cover member 20 may have a cover-side ventilation recess on the lower surface, as in the above embodiment.

[0076] 13, the front end 23 of the cover member 20 overlaps with the front end 220B of the second main body portion 220, and the lower end is in contact with the abutment surface 231 of the first main body portion 210. As shown in FIG.

[0077] As described above, by providing the second main body portion 220 that forms the air passage 1A between the first main body portion 210 and the cover member 20, deformation of the air passage 1A when an occupant is seated in the vehicle seat S can be suppressed more than in the case where the air passage 1A is formed by the body side ventilation recess 15 of the pad main body 10 and the cover side ventilation recess 25 of the cover member 20 as in the above embodiment.

[0078] In addition, since the front end 220B of the second main body portion 220 extends downward, even if the front end 220B of the second main body portion 220 rises up when sitting, no step is created at the front part of the upper surface of the pad main body 10, so that deterioration of the seating feeling can be suppressed.

[0079] And, since the front end 220B of the second main body portion 220 contacts the abutment surface 231 of the protruding portion 230, it is possible to suppress downward displacement of the second main body portion 220. Also, since the front end 220B of the second main body portion 220 contacts the front step 213 and the rear end (rear end 222 of the air passage forming portion 220A) of the second main body portion 220 contacts the rear step 214, it is possible to suppress rearward displacement of the second main body portion 220.

[0080] Furthermore, in this modified example, since the front end portion 23 of the cover member 20 contacts the abutment surface 231 of the protrusion 230, downward displacement of the cover member 20 can be suppressed.

[0081] In this modified example, both the front end 220B of the second main body portion 220 and the front end 23 of the cover member 20 are in contact with the abutment surface 231 of the protrusion 230, but the configuration may also be such that only one of the front end 220B of the second main body portion 220 and the front end 23 of the cover member 20 is in contact with the abutment surface 231 of the protrusion 230.

[0082] In the above embodiment, an example has been shown in which the present invention is applied to a seat used in an automobile (vehicle seat S), but the present invention is not limited to this and can also be applied to seats used in other vehicles, such as railroad cars, ships, airplanes, etc. Furthermore, the present invention is not limited to vehicle seats and can also be applied to seats used in public facilities such as movie theaters, homes, etc. [Explanation of symbols]

[0083] 1 seat cushion pad 1A Ventilation path 1B Ventilator 10 Pad body 10F front end 20 Cover member 23 Front end S Vehicle seat

Claims

1. A seat comprising a pad having an air passage formed therein and an air outlet formed on a surface facing a seated person, the pad having a pad body and a cover member disposed so as to cover the pad body and forming the air passage between the pad body and the cover member, the seat being configured so that air flows through the air passage and the air outlet, the pad body has a protrusion and a ventilation recess facing the cover member to form the ventilation path between the cover member and the protrusion; The ventilation recess has left and right grooves arranged to be spaced apart from each other on the left and right, The sheet is characterized in that the convex portion is disposed between the left and right groove portions and spaced apart from the left and right groove portions.

2. A sheet as described in claim 1, characterized in that the amount of protrusion of the convex portion is greater than the depth of the ventilation recess.

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