Vehicle seat

Abstract

To allow an occupant to feel a flow of air even on a slide pad side.SOLUTION: A vehicle seat 10 comprises: a pad body 22 forming a part of a seat cushion pad 20; a slide pad 24 forming another part of the seat cushion pad 20, and contacting and separating from the pad body 22 by slide in a seat cross direction; a channel 42A formed on an opposite side of a seating surface 20A on the pad body 22; and a blower 36 for flowing air in the channel 42A. The channel 42A reaches a facing surface with the slide pad 24 on the pad main body 22, on the facing surface 22B, there is formed a body groove part 46 communicating with the channel 42A and reaching the seating surface 20A. The body groove part 46 has a part on the seating surface 20A side which is thinner than a part on the channel 42A side.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a vehicle seat. [Background technology]

[0002] The following Patent Document 1 discloses a vehicle seat with an air conditioning function. A flow path is formed on the cushion pad of this vehicle seat on the side opposite to the seating surface, and a plurality of through holes that open on the seating surface are connected to the flow path. When an intake device connected to the flow path is activated, air is sucked in through the plurality of through holes, cooling the thighs and buttocks of the seated person. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2020-90268 A Summary of the Invention [Problem to be solved by the invention]

[0004] In a vehicle seat in which the length of the seat cushion in the front-rear direction can be adjusted, a slide pad (extension pad) constituting the front part of the seat cushion pad slides toward and away from the pad body of the seat cushion pad in the front-rear direction of the seat. In a vehicle seat provided with such a slide pad, an air conditioning flow path is formed only in the pad body, and there is a problem that the occupant cannot feel the air flow on the slide pad side.

[0005] SUMMARY OF THE PRESENT DISCLOSURE In consideration of the above, an object of the present invention is to provide a vehicle seat that allows an occupant to feel air flow even on the slide pad side. [Means for solving the problem]

[0006] A first embodiment of a vehicle seat includes a pad main body constituting a part of a pad that supports an occupant on a seating surface, a slide pad that constitutes another part of the pad and is moved toward and away from the pad main body by sliding along the seating surface, a breathable cover main body that covers the pad main body, a slide cover that covers the slide pad, a flow path formed on the side of the pad main body opposite the seating surface, and a blower that circulates air within the flow path, the flow path reaching a surface of the pad main body facing the slide pad, and a main body groove portion that is connected to the flow path and reaches the seating surface is formed on the facing surface, and the main body groove portion is formed so that the portion on the seating surface side is narrower than the portion on the flow path side.

[0007] In the vehicle seat of the first aspect, an occupant is supported on the seating surface of a pad. A part of the pad is constituted by a pad main body, and another part of the pad is constituted by a slide pad. The pad main body is covered by a breathable skin main body, and the slide pad is covered by a slide skin. The slide pad is moved toward and away from the pad main body by sliding along the seating surface.

[0008] A flow path is formed on the side of the pad body opposite the seating surface, and air in the flow path is moved by a blower. This flow path reaches the surface of the pad body facing the slide pad, and a main body groove portion is formed on the facing surface, which communicates with the flow path and reaches the seating surface. As a result, even when the slide pad approaches the pad body and the gap between the pad body and the slide pad is narrowed, the space on the occupant side communicates with the flow path through the main body groove portion, so that the occupant can feel the air flow even on the slide pad side by operating the blower. Moreover, since the main body groove portion is formed narrower on the seating surface side than on the flow path side, the upholstery main body covering the pad body can be prevented from being recessed at the main body groove portion, and deterioration of the appearance of the vehicle seat can be avoided.

[0009] The vehicle seat of the second aspect is the same as that of the first aspect, wherein the main body groove portion is configured with one wide groove on the flow path side and with a plurality of narrow grooves on the seating surface side.

[0010] In the vehicle seat of the second aspect, the main body groove portion formed on the surface of the pad main body facing the slide pad is configured with one wide groove on the flow path side and multiple narrow grooves on the seating surface side, thereby making it possible to avoid deterioration of the appearance of the vehicle seat while ensuring the flow rate of air flowing through the main body groove portion.

[0011] The vehicle seat of the third aspect is the first or second aspect, wherein the slide cover has breathability, and a slide groove portion is formed on the surface of the slide pad facing the pad main body at a location opposite the main body groove portion in the sliding direction of the slide pad.

[0012] According to the vehicle seat of the third aspect, even when the slide pad approaches the pad body and the gap between the pad body and the slide pad is narrowed, the space on the passenger side communicates with the flow path via the slide groove and the main body groove, which allows the passenger to feel a good air flow.

[0013] A vehicle seat according to a fourth aspect is the third aspect, wherein a surface groove portion communicating with the slide groove portion is formed on a surface of the slide pad that constitutes a part of the seating surface.

[0014] According to the vehicle seat of the fourth aspect, even when the slide pad approaches the pad body and the gap between the pad body and the slide pad is narrowed, the surface groove formed on the surface of the slide pad constituting a part of the seating surface communicates with the flow path via the slide groove and the main body groove, so that the occupant can feel the air flow at the part of the body supported by the surface of the slide pad.

[0015] A vehicle seat of a fifth aspect is based on the third aspect, and a part of the slide groove portion faces a portion of the main body groove portion on the flow path side in the sliding direction.

[0016] According to the vehicle seat of the fifth aspect, a part of the slide groove formed on the surface of the slide pad facing the pad main body faces a part of the main body groove formed on the surface of the main pad facing the slide pad on the flow path side (i.e., a part of the main body groove that is thicker than the part of the main body groove on the seating surface side) in the sliding direction of the slide pad. This makes it easier to ensure air circulation between the slide groove and the main body groove even if the positions of the slide groove and the main body groove vary.

[0017] A sixth aspect of the vehicle seat is any one of the first to fifth aspects, in which the pad is a seat cushion pad provided on a seat cushion that supports the buttocks and thighs of a seated occupant, and the slide pad is disposed on the front side of the seat relative to the pad main body and slides along the front-to-rear direction of the seat relative to the pad main body.

[0018] In the vehicle seat of the sixth aspect, the buttocks and thighs of an occupant seated on the seat cushion are supported by the seating surface of the seat cushion pad. The slide pad of the seat cushion pad is disposed on the front side of the seat with respect to the pad body of the seat cushion pad and slides in the front-rear direction of the seat with respect to the pad body. This allows the length of the seat cushion in the front-rear direction to be adjusted according to the physique of the occupant, etc. Effect of the Invention

[0019] As described above, according to the vehicle seat of the present invention, the occupant can feel the air flow even on the slide pad side. [Brief description of the drawings]

[0020] [Figure 1] 1 is a perspective view showing a vehicle seat according to an embodiment; [Diagram 2] 1 is a perspective view showing a seat cushion of a vehicle seat according to an embodiment; [Diagram 3] FIG. 2 is an exploded perspective view showing a configuration of a portion of the seat cushion. [Figure 4] FIG. 2 is a bottom view showing a pad body of the seat cushion pad. [Diagram 5] FIG. [Figure 6] FIG. 4 is a perspective view showing a slide pad of the seat cushion pad. [Figure 7] FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] A vehicle seat 10 according to one embodiment of the present invention will be described below with reference to Figs. 1 to 7. In each drawing, some reference numerals may be omitted in order to make the drawings easier to see. Arrows FR, RH, and UP, which are appropriately written in each drawing, respectively indicate the front, right, and top of the vehicle seat 10. In the following description, when the front-rear, left-right, top-bottom directions are used, they indicate directions relative to the vehicle seat 10.

[0022] 1, a vehicle seat 10 according to this embodiment includes a seat cushion 12 that supports the buttocks and thighs of an occupant, a seat back 14 that supports the back of the occupant, and a headrest 16 that supports the head of the occupant. The seat cushion 12 includes a seat cushion frame 18 that is a framework member, a seat cushion pad (pad) 20 that is a padding material, and a seat cushion skin 22 that is a skin that covers the seat cushion pad 20.

[0023] The seat cushion frame 18 is made of, for example, metal. The seat cushion pad 20 is made of, for example, a foam such as urethane foam, and is placed over the seat cushion frame 18. The seat cushion skin 22 is formed into a bag shape by sewing together a plurality of skin pieces made of, for example, a cloth material, leather, synthetic leather, or the like, and is placed over the seat cushion pad 20 from above.

[0024] 2, the center of the seat cushion 12 in the left-right direction is a main part 12A that supports the buttocks and thighs of the occupant from below, and both left-right sides of the seat cushion 12 are a pair of left and right side parts 12B that support the buttocks and thighs of the occupant from the sides. In this seat cushion 12, the front part of the main part 12A is a slide part 12A2, and the part other than the slide part 12A2 is a cushion main body 12A1.

[0025] The seat cushion pad 20 is divided into a pad main body 22 constituting the pad material of the cushion main body 12A1, and a slide pad (extension pad) 24 constituting the pad material of the slide portion 12A2. The pad main body 22 constitutes a part of the seat cushion pad 20, and the slide pad 24 constitutes the other part of the seat cushion pad 20. An upper surface 22A of the pad main body 22 and an upper surface 24A of the slide pad 24 constitute a seating surface 20A that supports the buttocks and thighs of an occupant.

[0026] The slide pad 24 is disposed on the front side of the pad main body 22, and is supported from below by a cushion length varying mechanism (not shown). This cushion length varying mechanism is configured to slide the slide pad 24 toward and away from the pad main body 22 in the front-rear direction by the driving force of a motor or the like.

[0027] The seat cushion skin 26 is divided into a skin main body 28 that covers the pad main body 22, and a slide skin 30 that covers the slide pad 24. Both the skin main body 28 and the slide skin 30 have breathability. In other words, the multiple skin pieces that make up the skin main body 28 and the slide skin 30 are mainly made of breathable cloth material, or leather or synthetic leather with a large number of ventilation holes. The skin main body 28 and the slide skin 30 may be made by laminating a thin breathable urethane foam on the back surface of the skin piece.

[0028] A cloth-like insert sheet 32 ​​is attached to the underside 20B of the pad body 22 opposite to the seating surface 20A. The insert sheet 32 ​​is, for example, formed by integral foam molding with the pad body 22. A seal member 34 is disposed on the underside of the pad body 22. The seal member 34 is formed in a rectangular plate shape from a nonmetallic material such as nonwoven fabric or press felt. A blower 36 is disposed below the rear part of the seal member 34, and a through hole 35 formed in the rear part of the seal member 34 communicates with an air intake of the blower 36.

[0029] 3 and 4, a plurality of (four in this example) recesses 40 are formed in the lower surface 20B of the pad body 22 along the front-rear direction, recessed toward the upper surface 22A of the pad body 22. The four recesses 40 are formed in the lower surface of the portion of the pad body 22 that constitutes the main portion 12A, and are arranged side by side in the left-right direction. The four recesses 40 extend from the rear of the pad body 22 to the front side of the pad body 22.

[0030] The rear ends of the four recesses 40 join together above the through hole 35 of the seal member 34. The front ends of the two recesses 40A on both outer sides in the left-right direction of the four recesses 40 reach the lower part of the opposing surface 22B of the pad body 22 that faces the slide pad 24. The front ends of the two recesses 40B on the central side in the left-right direction of the four recesses 40 are located rearward of the opposing surface 22B.

[0031] The insert sheet 32 ​​attached to the lower surface 20B of the pad body 22 is molded according to the shapes of the four recesses 40, and the four recesses 40 are reinforced by the insert sheet 32. The seal member 34 arranged on the lower side of the pad body 22 contacts the lower surface of the pad body 22 via the insert sheet 32, and the four recesses 40 are closed by the seal member 34. As a result, four flow paths 42 with a closed cross-sectional structure are formed in the lower part of the pad body 22.

[0032] A plurality of through holes 44 are formed in the pad body 22 at a portion constituting the main portion 12A, penetrating the pad body 22 in the up-down direction. The upper ends of the plurality of through holes 44 open at the upper surface (seating surface 20A) of the pad body 22, and the lower ends of the plurality of through holes 44 communicate with any of the four flow paths 42. Of the four flow paths 42, two flow paths 42A on both the outer sides in the left-right direction reach the lower part of the surface 22B of the pad body 22 facing the slide pad 24. The front ends of the two flow paths 42A on both the outer sides in the left-right direction are made to be air vents 42A1.

[0033] The blower 36 disposed below the seal member 34 is, for example, an intake fan that sucks in air in the four flow paths 42 and blows the air toward the lower side of the seat cushion 12. This creates a negative pressure inside the four flow paths 42. As a result, air on the occupant side flows into the four flow paths 42 through the air vents 42A1 of the two flow paths 42A on both the left and right outer sides and the multiple through holes 44. The air that has flowed into the four flow paths 42 flows inside the four flow paths 42, and is then exhausted by the blower 36 toward the lower side of the seat cushion 12.

[0034] In addition, when the blower 36 is configured to blow air into the four flow paths 42, the air below the seat cushion 12 flows into the four flow paths 42 and is exhausted to the occupant side through the air vents 42A1 of the two flow paths 42A on both the left and right outer sides and the multiple through holes 44.

[0035] As shown in FIG. 5, two main body grooves 46 are formed on the surface 22B of the pad main body 22 facing the slide pad 24, the two main body grooves 46 being connected to the vent holes 42A1 of the two flow paths 42A on both the left and right outer sides and reaching the seating surface 20A. The left main body groove 46 is formed on the left end of the facing surface 22B, and the right main body groove 46 is formed on the right end of the facing surface 22B. The two main body grooves 46 are recessed toward the rear side and extend in the up-down direction. The main body grooves 46 are formed so that the portion on the seating surface 20A side (upper side) is narrower than the portion on the flow path 42A side (lower side). Specifically, the lower portion of each main body groove 46 is composed of one thick groove 46A, and the upper portion is composed of multiple (here, two) thin grooves 46B.

[0036] The two narrow grooves 46B are arranged side by side in the left-right direction at an interval narrower than the left-right width dimension at the front end of the flow path 42A, and extend in the up-down direction. The left-right width dimension at the lower end of one wide groove 46A is set to be equal to the left-right width dimension at the front end of the flow path 42A, and the left-right width dimension at the upper end is set to be equal to the interval between the two narrow grooves 46B, and is approximately trapezoidal when viewed from the front side. The left-right width dimension of each narrow groove 46B is set sufficiently smaller than the left-right width dimension of the wide groove 46A, for example, 3 millimeters or more.

[0037] As shown in Figs. 6 and 7, the slide pad 24 is formed with a plurality (four in this case) of slide grooves 48 and a plurality (four in this case) of surface grooves 50. The four slide grooves 48 are formed on the surface 24B of the slide pad 24 facing the pad body 22, extend in the up-down direction, and are recessed toward the front side. Two of the four slide grooves 48 are formed close to each other on the left end of the facing surface 24B, and the remaining two of the four slide grooves 48 are formed close to each other on the right end of the facing surface 24B. The groove width in the left-right direction of each slide groove 48 is set to be equal to the groove width in the left-right direction of the narrow groove 46B described above.

[0038] The two left slide groove portions 48 are formed at locations facing the left main body groove portion 46 in the sliding direction (front-rear direction) of the slide pad 24, and the two right slide groove portions 48 are formed at locations facing the right main body groove portion 46 in the sliding direction of the slide pad 24. In detail, the two left slide groove portions 48 are arranged so that their left-right positions are aligned with the two narrow grooves 46B of the left main body groove portion 46, and the two right slide groove portions 48 are arranged so that their left-right positions are aligned with the two narrow grooves 46B of the right main body groove portion 46.

[0039] The four surface grooves 50 are formed on the upper surface (surface) 24A constituting a part of the seating surface 20A of the slide pad 24, extend in the front-rear direction, and are recessed downward. Two of the four surface grooves 50 are formed close to each other on the left end of the upper surface 22A, and the remaining two of the four slide grooves 48 are formed close to each other on the right end of the upper surface 22A. The groove width in the left-right direction of each surface groove 50 is set to be equal to the groove width in the left-right direction of each slide groove 48.

[0040] The two left surface grooves 50 are aligned with the two left slide grooves 48 in the left-right direction, and the two right surface grooves 50 are aligned with the two right slide grooves 48 in the left-right direction. The rear ends of the two left surface grooves 50 communicate with the upper ends of the two left slide grooves 48, and the rear ends of the two right surface grooves 50 communicate with the upper ends of the two right slide grooves 48.

[0041] When the slide pad 24 is closest to the pad body 22, the pad body 22 and the slide pad 24 come into contact with each other via the skin body 28 and the slide skin 30, narrowing the gap between the pad body 22 and the slide pad 24. In this state, the two narrow grooves 46B of the left body groove 46 communicate with the two left slide grooves 48 via the breathable skin body 28 and the slide skin 30, and the two narrow grooves 46B of the right body groove 46 communicate with the two right slide grooves 48 via the breathable skin body 28 and the slide skin 30.

[0042] The lower parts (parts) of the two left slide groove portions 48 are disposed at the same height as the wide groove 46A of the left main body groove portion 46, and face the wide groove 46A of the left main body groove portion 46 in the front-rear direction. Similarly, the lower parts (parts) of the two right slide groove portions 48 are disposed at the same height as the wide groove 46A of the right main body groove portion 46, and face the wide groove 46A of the right main body groove portion 46 in the front-rear direction.

[0043] Next, the operation and effects of this embodiment will be described. In the vehicle seat 10 configured as described above, the buttocks and thighs of an occupant seated on the seat cushion 12 are supported by the seating surface 20A of the seat cushion pad. The slide pad 24 of the seat cushion pad 20 is disposed forward of the pad body 22 of the seat cushion pad 20. The pad body 22 is covered by a breathable skin body 28, and the slide pad 24 is covered by a breathable slide skin 30. The slide pad 24 is moved toward and away from the pad body 22 by sliding in the front-rear direction along the seating surface 20A. This allows the front-rear length of the seat cushion 12 to be adjusted according to the physique of the occupant, etc.

[0044] Four flow paths 42 are formed on the side of the pad main body 22 opposite the seating surface 20A, and the air in each flow path 42 is moved by the blower 36. The four flow paths 42 are connected to a plurality of through holes 44 opening in the upper surface 22A of the pad main body 22, and air on the occupant's side is sucked into the four flow paths 42 and exhausted to the lower side of the seat cushion 12. This allows the occupant to feel the air flow at the points of his / her buttocks and thighs that are supported by the pad main body 22, improving the comfort of the occupant.

[0045] Furthermore, the front ends of the two flow paths 42A on both the left and right outer sides of the four flow paths 42 are air vents 42A1 that reach the surface 22B of the pad body 22 facing the slide pad 24. When the slide pad 24 is separated from the pad body 22, the gap formed between the slide pad 24 and the pad body 22 is enlarged and communicates with the two flow paths 42A. When the blower 36 is operated in this state, air on the occupant side is sucked into the two flow paths 42A through the gap and is exhausted to the lower side of the seat cushion 12. This allows the occupant to feel the air flow even on the slide pad 24 side.

[0046] Furthermore, in this embodiment, two body grooves 46, one on each side, which communicate with the vent holes 42A1 of the two flow paths 42A and reach the seating surface 20A, are formed on the surface 22B of the pad body 22 facing the slide pad 24. As a result, even when the slide pad 24 approaches the pad body 22 and the gap between the pad body 22 and the slide pad 24 is narrowed, the space on the occupant side communicates with the two flow paths 42A via the two body grooves 46, so that the blower 36 can be operated to make the occupant feel the air flow even on the slide pad 24 side.

[0047] Furthermore, since the two main body grooves 46 are formed narrower on the seating surface 20A side than on the flow path 42A side, the skin main body 28 covering the pad main body 22 is prevented from being recessed at the main body grooves 46, thereby preventing deterioration of the appearance of the vehicle seat 10.

[0048] Moreover, the main body groove 46 is configured such that the portion on the flow path 42A side is composed of one wide groove 46A, and the portion on the seating surface 20A side is composed of two narrow grooves 46B. This makes it possible to ensure the flow rate of air flowing through the main body groove 46 while avoiding deterioration of the appearance of the vehicle seat 10.

[0049] Furthermore, in this embodiment, a slide groove portion 48 is formed on the surface 24B of the slide pad 24 facing the pad body 22 at a location facing the body groove portion 46 in the sliding direction (front-rear direction) of the slide pad 24. Even when the slide pad 24 approaches the pad body 22 and the gap between the pad body 22 and the slide pad 24 is narrowed, the space on the occupant side communicates with the flow path 42A via the slide groove portion 48 and the body groove portion 46. This allows the occupant to feel a good air flow.

[0050] Moreover, in this embodiment, a surface groove 50 communicating with the slide groove 48 is formed on the upper surface 24A of the slide pad 24, which constitutes a part of the seating surface 20A. Therefore, even when the slide pad 24 approaches the pad main body 22 and the gap between the pad main body 22 and the slide pad 24 is narrowed, the surface groove 50 formed on the upper surface 24A of the slide pad 24 communicates with the flow path 42A via the slide groove 48 and the main body groove 46. This allows the occupant to feel the air flow at the part of the thigh supported by the upper surface 24A of the slide pad 24.

[0051] In this embodiment, the lower part of the slide groove 48 formed on the surface 24B of the slide pad 24 facing the pad body 22 faces the wide groove 46A, which is the part of the body groove 46 on the flow path 42A side, in the sliding direction (front-rear direction) of the slide pad 24. This makes it easier to ensure air circulation between the slide groove 48 and the body groove 46 even if the left-right positions of the slide groove 48 and the body groove 46 vary.

[0052] In the above embodiment, the seat cushion pad 20 is the pad of the present invention. However, the pad of the seat back 14 may be the pad of the present invention.

[0053] In addition, the present invention can be implemented in various modifications without departing from the spirit and scope of the present invention. Furthermore, the scope of the present invention is not limited to the above-described embodiment. [Explanation of symbols]

[0054] 10 Vehicle seats 12 Seat cushion 20 Seat cushion pad (pad) 20A Seat surface 22 Pad body 22B Surface of pad body facing slide pad 24 Slide Pad 24A Top surface (front surface) 24B Surface of the slide pad facing the pad body 28 Epidermis body 30 Slide Skin 36 Blower 42 Flow Path 46 Body groove 46A Thick groove 46B Narrow groove 48 Slide groove 50 Surface groove

Claims

1. A pad main body that constitutes a part of a pad that supports an occupant on a seating surface; a slide pad that constitutes another portion of the pad and is adapted to be brought into contact with and separated from the pad body by sliding along the seating surface; A breathable surface body covering the pad body; A slide cover covering the slide pad; a flow path formed on the opposite side of the pad body from the seating surface; A blower for moving air through the flow path; Preparation, the flow path reaches a surface of the pad body facing the slide pad, A main body groove portion that communicates with the flow path and reaches the seating surface is formed on the opposing surface, The vehicle seat, wherein the main body groove is formed so that a portion on the seating surface side is narrower than a portion on the flow path side.

2. 2. The vehicle seat according to claim 1, wherein the main groove portion is configured with one wide groove on the flow path side and with a plurality of narrow grooves on the seating surface side.

3. The slide skin is breathable, 3. The vehicle seat according to claim 1, wherein a slide groove portion is formed on a surface of the slide pad facing the pad body at a location opposite to the body groove portion in a sliding direction of the slide pad.

4. The vehicle seat according to claim 3 , wherein a surface groove portion communicating with the slide groove portion is formed on a surface of the slide pad that constitutes a part of the seating surface.

5. The vehicle seat according to claim 3 , wherein a portion of the slide groove portion faces a portion of the main groove portion on the flow path side in the sliding direction.

6. 3. The vehicle seat according to claim 1, wherein the pad is a seat cushion pad provided on a seat cushion that supports the buttocks and thighs of a seated occupant, and the slide pad is disposed on the front side of the seat relative to the pad main body and slides in the fore-and-aft direction of the seat relative to the pad main body.

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