JP6643726B2 - Vehicle seat - Google Patents

Description

  The present invention relates to a vehicle seat including a plate-shaped pressure receiving member, a pad member that covers the pressure receiving member, and a duct that connects a ventilation device and a ventilation path formed in the pad member.

  BACKGROUND ART Conventionally, a vehicle seat including a blower provided at a lower portion of a seat cushion, a first duct connecting a blower to a ventilation path of the seat cushion, and a second duct connecting a blower and a ventilation path of a seat back is known. (Patent Document 1). In this technique, the duct is connected to the seat cushion or the seat back by inserting a tip portion into a through hole formed in a urethane pad of the seat cushion or the seat back.

JP-A-2006-164028

  By the way, when a plate-shaped pressure-receiving member that receives a load from an occupant is arranged under the urethane pad of the seat cushion or after the urethane pad of the seatback, the back surface of the pad member such as the urethane pad is covered by the pressure-receiving member. However, even in such a configuration, it is required that the ventilation path of the pad member and the duct can be easily connected.

Therefore, an object of the present invention is to provide a vehicle seat that can easily connect a ventilation path of a pad member and a duct.
Another object of the present invention is to reduce the size of a vehicle seat.
Another object of the present invention is to suppress interference between the duct and other members.
Another object of the present invention is to protect a portion where the duct and the pad member are connected.

  In order to achieve the above object, a vehicle seat according to the present invention includes a plate-shaped pressure receiving member that receives a load from an occupant, a pad member that covers an occupant side of the pressure receiving member, and an air passage formed in the pad member. And a duct connecting the blower, wherein the duct is connected to the ventilation path from a side opposite to an occupant side of the pad member, and the pressure receiving member has an opening for passing the duct. It is characterized by the following.

  According to such a configuration, the duct can be connected to the ventilation path formed in the pad member through the opening of the pressure receiving member. Therefore, even in the configuration including the plate-shaped pressure receiving member, the ventilation path of the pad member and the duct can be easily formed. Can be connected to

  The vehicle seat includes a pair of side frames and a connection frame that connects the pair of side frames, and the duct is disposed on a side of the connection frame opposite to an occupant side, and the connection frame includes It is possible to adopt a configuration having a first flat portion whose dimension in the opposing direction is smaller than the dimension in the direction orthogonal to the opposing direction.

  According to this, since the first flat portion can be made thinner in the facing direction, the vehicle seat can be made compact in the facing direction. In addition, a gap can be secured between the first flat portion and the connection frame while achieving compactness, so that interference between the duct and the connection frame can be suppressed.

  The vehicle seat may include a cover member that covers a portion where the duct connects to the ventilation path from a side opposite to an occupant.

  According to this, the portion where the duct and the pad member are connected can be protected by the cover member.

  The vehicle seat includes a pair of side frames and an S-spring bridged between the pair of side frames, and the opening is disposed at a position that does not overlap with the S-spring when viewed from the occupant side. Configuration.

  According to this, the duct can be easily passed through the opening of the pressure receiving member, so that the ventilation path of the pad member and the duct can be easily connected.

  The vehicle seat includes a pair of side frames and an S-spring installed on the pair of side frames, and the duct is disposed on a side of the S-spring opposite to an occupant side; And a second flat portion having a smaller dimension in a direction orthogonal to the opposite direction than a dimension in a direction orthogonal to the opposite direction.

  According to this, since the second flat portion can be made thinner in the facing direction, the vehicle seat can be made compact in the facing direction. In addition, since a gap can be secured between the second flat portion and the S spring while reducing the size, interference between the duct and the S spring can be suppressed.

  The vehicle seat includes a wire member that connects the pressure receiving member to a frame of the seat, and the wire member extends in a predetermined direction at a position overlapping the pressure receiving member when viewed from an occupant side, and extends in the predetermined direction. It has a pair of extension parts arranged side by side in the direction orthogonal to each other, and the opening can be configured to be arranged between the pair of extension parts.

  Further, the vehicle seat includes a wire member that connects the pressure receiving member to a frame of the seat, and the wire member has an extending portion extending in a predetermined direction at a position overlapping the pressure receiving member when viewed from the occupant side. And the opening may be arranged outside the extending portion in a direction orthogonal to the predetermined direction.

  According to the present invention, the ventilation path of the pad member and the duct can be easily connected.

  Further, according to the present invention, the vehicle seat can be made compact because the duct has the first flat portion. Further, interference between the duct and the connection frame can be suppressed.

  Further, according to the present invention, by providing the cover member, the portion where the duct and the pad member are connected can be protected.

  Further, according to the present invention, since the opening is located at a position not overlapping with the S-spring when viewed from the occupant side, the ventilation path of the pad member and the duct can be easily connected.

  Further, according to the present invention, the vehicle seat can be made compact because the duct has the second flat portion. Further, interference between the duct and the S spring can be suppressed.

FIG. 1 is a diagram illustrating a vehicle seat as a vehicle seat according to an embodiment. It is sectional drawing of a vehicle seat. It is a figure showing a seat frame, a support member, and a pressure receiving member. It is the figure which looked at the seat cushion from the upper part. It is the figure which looked at the back frame and the pressure receiving member from the front. It is a figure showing a duct. It is the figure which looked at the cushion frame, the support member, the air blower, and the duct from the bottom. It is the figure which looked at the back frame, the pressure receiving member, and the duct from back. It is the figure which looked at the back frame to which the cover member was attached from back. It is the perspective view which looked at the side frame cover from the left-right direction inside. It is the perspective view which looked at the side frame cover from the left-right direction outer side. It is a figure showing composition of a cushion pad. It is the figure which looked at the cushion pad from the upper part. FIG. 3 is a diagram illustrating a configuration of a back pad. It is the figure which looked at the back pad from the front. It is XX sectional drawing of FIG. It is a figure which shows the modification of a side frame cover. It is a figure which shows the modification of a pressure receiving member and a duct.

Hereinafter, an embodiment of the invention will be described with reference to the accompanying drawings. In addition, in this specification, front and rear, left and right, and up and down are based on front and rear, left and right, and up and down as seen from a person sitting on a seat.
As shown in FIG. 1, the vehicle seat according to the present embodiment is configured as a vehicle seat S mounted on an automobile, and includes a seat cushion S1 and a seat back S2.

  As shown in FIG. 2, the vehicle seat S covers a pad P made of urethane foam or the like and skins U1 and U2 made of cloth or leather on a seat frame F (see FIG. 3) constituting a frame of the seat. It is composed of As will be described in detail later, the pad P has ventilation paths A1 and A2 formed therein and first ventilation holes H1 and H2 formed to communicate with the ventilation paths A1 and A2 from the occupant side. The vehicle seat S is configured to blow the air blown from the blower 70 through the first ventilation holes H1 and H2 through the duct D and the ventilation paths A1 and A2 toward the occupant sitting on the seat. Have been.

  As shown in FIG. 3, the seat frame F has a cushion frame F1 forming a frame of the seat cushion S1, and a back frame F2 forming a frame of the seat back S2. The back frame F2 is connected to the cushion frame F1 via a reclining mechanism RL. The reclining mechanism RL has a known configuration, and rotatably supports the seat back S2 with respect to the seat cushion S1. In the present embodiment, the upper side of the seat cushion S1 corresponds to the “occupant side”, and the lower side corresponds to the “opposite side to the occupant side”. As for the seat back S2, the front side in a state where the seat back S2 is not tilted down by the reclining mechanism RL corresponds to the "occupant side", and the rear side corresponds to the "opposite side to the occupant side".

The cushion frame F1 includes a pair of left and right cushion side frames 11, a pan frame 12 as a front frame, a rear pipe 13 as a rear frame, and a front pipe 14 as a connecting pipe (see FIG. 4).
The pair of cushion side frames 11 are members constituting left and right frames of the seat cushion S1, and are spaced apart from each other in a left-right direction. The cushion side frame 11 is made of sheet metal, and is formed in a long shape that is long in front and rear.

The pan frame 12 is a plate-like member that connects the front portions of the pair of cushion side frames 11 to each other, and is made of sheet metal. The left and right ends of the pan frame 12 are connected to the front end of the cushion side frame 11 by welding.
As shown in FIG. 4, the rear pipe 13 and the front pipe 14 are made of a metal pipe material, are spaced apart in the front-rear direction, and are provided so as to connect the pair of cushion side frames 11. More specifically, the rear pipe 13 is arranged at a distance from the pan frame 12 behind the pan frame 12 and connects the rear portions of the pair of cushion side frames 11 to each other. In addition, the front pipe 14 is arranged in front of the rear pipe 13 so as to be separated from the rear pipe 13, and connects the front portions of the pair of cushion side frames 11. The front pipe 14 is arranged below the pan frame 12.

  A support member 30 is arranged between the pair of cushion side frames 11 of the cushion frame F1. The support member 30 is a member that receives a load from an occupant sitting on the seat, and has a plurality of wire members 31 and a resin member 32.

The wire member 31 is made of a metal wire, and spans the pan frame 12 and the rear pipe 13. The wire member 31 mainly has a first extension 31A, a second extension 31B, and a rear hook 31C as a hook.
The first extending portion 31A extends in the front-rear direction while alternately bending in the left-right direction. The front end of the first extending portion 31A is a front hooking portion 31D that is hooked on a hook portion 12H formed on the pan frame 12. The front end of the first extending portion 31A including the front hooking portion 31D is covered with a resin, whereby generation of sound due to contact between the wire member 31 (support member 30) and the pan frame 12 is suppressed. I have.
The second extending portion 31B extends obliquely rearward and upward from the rear end of the first extending portion 31A.
The rear hook portion 31C is a portion hooked to the rear pipe 13, extends from the upper end of the second extending portion 31B, and is curved so as to form a substantially circular arc.
The support member 30 includes four wire members 31, and the four wire members 31 are arranged in the left-right direction.

  The resin member 32 is a member that connects the wire members 31. The resin member 32 is made of resin, and is formed integrally with the wire member 31 in a state of covering the entire periphery of a part of the wire member 31 by insert molding or the like. The resin member 32 includes a first resin member 32A, a second resin member 32B, a third resin member 32C, a fourth resin member 32D, and a fifth resin member 32E.

The first resin member 32A connects the four wire members 31 near the center in the front-rear direction.
The second resin member 32B is arranged behind the first resin member 32A, and connects the two wire members 31 arranged at the center in the left-right direction with each other in the vicinity of the center in the front-rear direction.
The third resin member 32C is disposed on both the left and right sides of the second resin member 32B, and the left and right portions of the first extending portion 31A of the wire member 31 disposed on the left and right sides and the left and right sides of the portion. And a portion extending rearward from the end of the cable.
Each of the resin members 32A to 32C has a substantially rectangular through-hole (not shown) penetrating vertically. The support member 30 is configured to be able to hold a member such as a wire harness by engaging a clip or the like for fastening the wire harness to the through hole.

The fourth resin member 32D is disposed behind the resin members 32B and 32C, and connects the rear ends of the first extending portions 31A of the four wire members 31 to each other.
The fifth resin member 32E connects the rear ends of the two wire members 31 arranged adjacent to each other, specifically, connects the rear side hook portions 31C. The fifth resin member 32 </ b> E covers the rear hook portion 31 </ b> C, thereby suppressing generation of sound due to contact between the support member 30 and the rear pipe 13.

As shown in FIG. 5, the back frame F2 includes a pair of left and right sheet metal frames 22, a pipe frame 23, a lower frame 24 as a connecting frame, and a bridge frame 25.
The pair of sheet metal frames 22 are spaced apart from each other while facing each other in the left-right direction. The sheet metal frame 22 is formed of a sheet metal, and is formed in a vertically long shape.

  The pipe frame 23 is made of a metal pipe material, and has a pair of left and right upper side frames 23A extending substantially vertically and an upper frame 23B extending so as to connect upper ends of the upper side frames 23A. The lower portions of the pair of upper side frames 23 </ b> A are connected to the upper portion of the sheet metal frame 22 by welding, thereby forming a pair of back side frames 21 together with the pair of sheet metal frames 22. The pair of back side frames 21 constitute left and right frames of the seat back S2. In the present embodiment, the “pair of side frames” includes a pair of back side frames 21 and a pair of cushion side frames 11 of the cushion frame F1.

The lower frame 24 is a member that connects the lower portions of the pair of back side frames 21 and is made of sheet metal. The left and right ends of the lower frame 24 are connected by welding to portions extending to the left and right inside of the rear end of the sheet metal frame 22 constituting the back side frame 21.
The bridge frame 25 is a member that connects the upper portions of the pair of back side frames 21 and is made of sheet metal. The left and right ends of the bridge frame 25 are connected to the upper portion of the upper side frame 23A constituting the back side frame 21 by welding or the like. The bridge frame 25 has a lower extension 25A that extends forward at the lower end, and penetrates vertically at the left and right ends of the lower extension 25A where a wire member 60 described later is inserted. A support hole 25B (see FIG. 3) is formed.

The S spring 40, the pressure receiving member 50, and the wire member 60 are disposed between the pair of back side frames 21 of the back frame F2.
The S spring 40 is formed by alternately bending a metal wire in the up-down direction. The S-spring 40 is disposed above the lower frame 24, and spans the pair of back side frames 21. More specifically, the S spring 40 is connected in a state of being bridged between the pair of back side frames 21 by inserting the left and right ends from above into a spring engaging portion 22A provided at the lower portion of the sheet metal frame 22. ing.

  The pressure receiving member 50 is a plate-shaped member that receives a load from an occupant sitting on the seat, and is made of resin or the like. The pressure receiving member 50 is disposed so as to face the back of the occupant. The pressure receiving member 50 has a lower end disposed in front of the S spring 40. The pressure receiving member 50 has an opening 50 </ b> A penetrating back and forth. The opening 50A is a hole through which the duct D passes, and is formed in a substantially rectangular shape that is long on the left and right. The opening 50 </ b> A is disposed at a central portion of the lower part of the pressure receiving member 50 in the left-right direction. Specifically, the opening 50 </ b> A is arranged between a pair of extending portions 61 of the wire member 60, which will be described later. The opening 50A is arranged at a position where it does not overlap with the S spring 40 when viewed from the front side. Specifically, the opening 50A is arranged above the S spring 40.

The wire member 60 is a member that connects the pressure receiving member 50 to the back frame F2, and mainly includes a pair of left and right extending portions 61, an inclined portion 62, an upper connecting portion 63, and a lower connecting portion 64. I have.
The extending portion 61 extends in a vertical direction (a direction orthogonal to the left-right direction) as a predetermined direction, and is arranged in the left-right direction (a direction orthogonal to the predetermined direction).
The inclined portion 62 extends obliquely upward from the upper end of the extending portion 61 outward in the left-right direction.
The upper connecting portion 63 extends upward from the upper end of the inclined portion 62.
The lower connecting portion 64 connects the pair of left and right extending portions 61, the inclined portion 62 and the upper connecting portion 63. Specifically, the lower connecting portion 64 has a lower end portion extending in the left-right direction, and extends upward from both left and right ends of the lower end portion, and then bends and extends inward in the left-right direction to form the extending portion 61. It is connected to the lower end.

  In the wire member 60, the lower connecting portion 64 is fixed to the front side of the lower frame 24, and the upper connecting portion 63 is inserted into a support hole 25 </ b> B (see FIG. 3) formed in the lower extension 25 </ b> A of the bridge frame 25. Thus, it is connected to the back frame F2. The pressure receiving member 50 is arranged on the front side of the pair of extending portions 61 of the wire member 60, and is fixed to the extending portion 61 by a binding band (not shown), so that the pressure receiving member 50 is connected to the back frame F2 via the wire member 60. I have. The pair of extending portions 61 are arranged at positions overlapping the pressure receiving member 50 when viewed from the front side.

As shown in FIG. 2, the vehicle seat S includes a blower 70 and a duct D.
The blower 70 is, for example, a sirocco fan, and is arranged below the pan frame 12. Specifically, the blower 70 is attached to the pan frame 12 via a bracket 71.

  The duct D is a member that connects the ventilation devices A1 and A2 formed in the pads P of the seat cushion S1 and the seat back S2 to the blower 70, and passes from the lower side of the seat cushion S1 to the rear side of the cushion frame F1. It extends toward the seat back S2. As shown in FIG. 6, the duct D includes a first duct D1 and a second duct D2 connected to a rear end of the first duct D1. The first duct D1 mainly includes the lower tube portion 110, the connecting portion 120, and the first narrow portion 131, and the second duct D2 includes the second narrow portion 132 and the flexible portion. Mainly has a bellows portion 140, a first flat portion 150, a second flat portion 160, and a back connection portion 170. In the present embodiment, the first narrow portion 131 and the second narrow portion 132 correspond to a “narrow portion”.

  As shown in FIG. 7, the lower tube portion 110 is a portion disposed below the seat cushion S1, more specifically, below the support member 30, and extends substantially forward and backward. The lower pipe portion 110 includes a blower connection portion 111 as a first portion, a second portion 112, a third portion 113, a fourth portion 114, a wide portion 115 as a fifth portion, and a branch pipe portion. And a cushion connecting portion 116 (see also FIG. 6).

The blower connection unit 111 is a part whose front end is connected to the blower 70 and extends forward and backward.
The second portion 112 extends obliquely rearward from the rear end of the blower connection portion 111 outward in the left-right direction.
The third portion 113 extends rearward from the rear end of the second portion 112.
In the present embodiment, the size (width) of the second portion 112 in the left-right direction gradually increases from the position of the rear end of the blower connection portion 111 to the rear, and the third portion 113 is connected to the blower connection. The dimension in the left-right direction is larger than that of the part 111.

  As shown in FIG. 6, the cushion connection portion 116 is a portion connected to the air passage A1 formed in the seat cushion S1, and extends upward from the front end of the third portion 113. The cushion connection portion 116 has a bellows portion (symbols omitted), and is configured to have flexibility and expand and contract vertically. As shown in FIG. 4, the duct D is inserted into the ventilation path A1 from below the cushion pad P1 described later through the U-shaped portion of the wire member 31 in which the cushion connection portion 116 is disposed second from the right. As a result, it is connected to the cushion pad P1. Since the cushion connection portion 116 extends from the third portion 113 disposed at a position shifted to the right with respect to the blower connection portion 111 (see FIG. 7), in the present embodiment, the cushion connection portion 116 is disposed in the seat cushion S1. The cushion connection portion 116 can be provided at a position avoiding the wire member 31 and the like. Thereby, the ventilation path A1 formed in the seat cushion S1 and the duct D can be easily connected.

  Also, in the present embodiment, since the left-right dimension of the third portion 113 is larger than the left-right dimension of the blower connection portion 111 (see FIG. 7), the cushion connection portion extending from the third portion 113 is provided. The size in the left-right direction of 116 can be increased. Thereby, the cross-sectional area of the flow passage of the cushion connection portion 116 can be secured, so that air can be favorably flown between the inside of the duct D and the ventilation path A1 formed in the seat cushion S1.

  As shown in FIG. 7, the fourth portion 114 extends obliquely rearward from the rear end of the third portion 113 outward in the left-right direction.

  The wide portion 115 extends rearward from the rear end of the fourth portion 114. As shown in FIG. 6, in the wide portion 115, a dimension D11 in the left-right direction is larger than a dimension D12 in the vertical direction. In other words, the wide portion 115 has a vertically flat cross-sectional shape. In the present embodiment, not only the wide portion 115 but also the entire lower tube portion 110 has a vertically flat cross-sectional shape. The lower tube portion 110 including the wide portion 115, which is arranged below the seat cushion S1, has a small dimension in the vertical direction, and thus can be thinned in the vertical direction. Thereby, the vehicle seat S can be made compact vertically.

  Returning to FIG. 7, the wide portion 115 is located on the lower side of the support member 30 at one of the cushion side frames 11, more specifically, at the center of the pair of cushion side frames 11 in the left-right direction (see the dashed line). , Near the right cushion side frame 11. In other words, the wide portion 115 is disposed at a position closer to the right cushion side frame 11. When the support member 30 receives a load from the occupant, the central portion of the seat cushion S1 bends significantly below the left and right ends, but the wide portion 115 is disposed at a position closer to the right. Interference between the duct D and the support member 30 can be suppressed.

  As shown in FIG. 2, in the present embodiment, the fourth portion 114 and the wide portion 115 form a lower inclined portion 180. The lower inclined portion 180 extends obliquely so as to be positioned lower as it moves backward when viewed from the left and right directions. Thus, even when the occupant sits on the seat and the support member 30 bends downward, interference between the duct D and the support member 30 can be suppressed.

  The first narrow portion 131 and the second narrow portion 132 are portions arranged behind the cushion frame F1, and extend substantially up and down. The second narrow portion 132 has inner front-rear and left-right dimensions slightly larger than the outer front-rear and left-right dimensions of the first narrow portion 131, and is fitted to the upper end of the first narrow portion 131. I agree. Thus, the first duct D1 and the second duct D2 are connected. As shown in FIG. 6, the first narrow portion 131 and the second narrow portion 132 have a horizontal dimension D21 smaller than a substantially longitudinal dimension D22 orthogonal to the horizontal direction. In other words, the first narrow portion 131 and the second narrow portion 132 have a flat cross-sectional shape on the left and right. In the present embodiment, not only the narrow portions 131 and 132 but also the bellows portion 140 have a flat cross section in the left and right directions.

  The connection part 120 is a part that connects the first narrow part 131 (narrow part) and the wide part 115. The connecting portion 120 has a shape such that the size in the left-right direction gradually increases and the size in the vertical direction gradually decreases from the first narrow portion 131 to the wide portion 115. As a result, the cross-sectional shape of the duct D gradually changes from the first narrow portion 131 to the wide portion 115, so that the rigidity of the duct D is improved as compared with the case where the cross-sectional shape does not change. Can be. Further, since the flow passage cross-sectional area of the duct D can be suppressed from being reduced at the connection portion 120, the flow rate of air flowing through the duct D can be ensured.

  The bellows portion 140 extends substantially upward from the upper end of the second narrow portion 132. The bellows portion 140 has a shape in which peaks and valleys are alternately formed, has flexibility, and is elastic. As shown in FIG. 2, the bellows portion 140 is arranged behind the cushion frame F <b> 1, specifically, behind the rear pipe 13. More specifically, the bellows portion 140 is located above the lower end 13A of the rear pipe 13. The bellows portion 140 is disposed such that the upper end is located immediately behind the lower frame 24, in other words, at a position overlapping the lower frame 24 when viewed from the rear side.

  In the present embodiment, the first narrow portion 131, the second narrow portion 132, and the bellows portion 140 constitute a retracting portion 190. The retracting portion 190 extends inclining so as to be located forward as it goes downward. As shown in FIG. 8, the retracting portion 190 is disposed at a position inside the pair of cushion side frames 11 in the left-right direction. Thereby, the vehicle seat S can be made compact left and right as compared with the case where the retreating portion 190 is arranged at a position outside the pair of cushion side frames 11 in the left-right direction. In addition, the retracting portion 190 is disposed behind the cushion frame F1 at a position closer to the right (one) cushion side frame 11 than the center position in the left-right direction of the pair of cushion side frames 11 (see the dashed line). I have. In other words, the evacuation unit 190 is disposed at a position closer to the right cushion side frame 11.

  In the duct D, a retracting portion 190 which is a portion passing through the rear side of the rear pipe 13 is arranged at a position different from the rear hooking portion 31C of the wire member 31 in the left-right direction. Specifically, the evacuation section 190 is disposed on the right side of the rear-side hooking section 31C located on the rightmost side. Further, the duct D is disposed at a different position in the left-right direction with respect to the second extending portion 31B of the wire member 31 as viewed from the rear side. Specifically, the evacuation portion 190 and the wide portion 115 (see FIG. 7) are disposed on the right side of the rightmost second extending portion 31B when viewed from the rear side. Furthermore, in this embodiment, the retreating portion 190 and the wide portion 115 are arranged so as not to overlap with the second extending portion 31B in any of the front, rear, left, right, and up and down directions. Accordingly, even when the occupant sits on the seat and the wire member 31 (the support member 30) bends downward, interference between the duct D and the wire member 31 can be suppressed.

  The first flat portion 150 extends obliquely upward from the upper end of the retracting portion 190 (the bellows portion 140) toward the center in the left-right direction of the pair of back side frames 21. The first flat portion 150 is arranged on the rear side of the lower frame 24. As shown in FIG. 6, the dimension D41 of the first flat portion 150 in the front-rear direction (the direction facing the lower frame 24) is smaller than the dimension D42 of the substantially vertical direction orthogonal to the front-rear direction. In other words, the first flat portion 150 has a flat cross-sectional shape in front and back. Thus, the first flat portion 150 can be made thinner in the front-rear direction, so that the vehicle seat S can be made compact in the front-rear direction. In addition, since a gap can be secured between the first flat portion 150 and the lower frame 24 while reducing the size, interference between the duct D and the lower frame 24 can be suppressed.

  Returning to FIG. 8, the second flat portion 160 extends upward from the upper end of the first flat portion 150. The second flat portion 160 is disposed at the center in the left-right direction of the pair of back side frames 21 and on the rear side of the S spring 40. In the present embodiment, the second flat portion 160 and the first flat portion 150 have substantially the same size in the front-rear direction. The dimension D41 (see FIG. 6) of the second flat portion 160 in the front-rear direction (opposing direction facing the S spring 40) is smaller than the left-right dimension D43 orthogonal to the front-rear direction. In other words, the second flat portion 160 has a flat cross-sectional shape before and after. Thereby, the second flat portion 160 can be thinned in the front-rear direction, so that the vehicle seat S can be made compact in the front-rear direction. In addition, since a gap can be secured between the second flat portion 160 and the S spring 40 while reducing the size, interference between the duct D and the S spring 40 can be suppressed.

  As shown in FIG. 2, the back connection portion 170 is a portion connected to the ventilation path A2 formed in the seat back S2, and extends obliquely upward and forward from the upper end of the second flat portion 160. The duct D is connected to the back pad P2 by inserting the back connection portion 170 into the ventilation path A2 from the rear side of the back pad P2, which will be described later, through an opening 50A formed in the pressure receiving member 50.

  As shown in FIG. 4, a known weight sensor WS as a sensor is disposed on one of the pair of cushion side frames 11, specifically, below the left cushion side frame 11. In the present embodiment, the duct D has a right cushion side frame 11 which is the other of the pair of cushion side frames 11 in the left-right direction, rather than a left cushion side frame 11 which is one of the pair of cushion side frames 11. It is located close to In other words, the duct D is arranged at a position close to the cushion side frame 11 where the weight sensor WS is not arranged in the left-right direction. Thus, interference between the duct D and the weight sensor WS, an electric wire (not shown) extending from the weight sensor WS, and the like can be suppressed.

  The resin member 32 that constitutes the support member 30 is disposed so as to overlap the duct D when viewed from above. Specifically, the first resin member 32A is disposed above the third portion 113 such that the right side portion overlaps the third portion 113 of the duct D when viewed from above. The right third resin member 32C is disposed above the wide portion 115 so as to overlap with the wide portion 115 of the duct D when viewed from above. Furthermore, the fourth resin member 32D is disposed above the wide portion 115 such that the right end overlaps the wide portion 115 when viewed from above. Accordingly, even when the support member 30 is bent downward and interferes with the duct D when the occupant sits on the seat, the resin members 32A, 32C, and 32D come into contact with the duct D first, so that the duct D It is possible to reduce the influence of the contact between the support member 30 and D, for example, the generation of sound and the impact at the time of contact.

  As shown in FIG. 7, in the present embodiment, in the lower tube portion 110, the second portion 112 extends obliquely rearward to the right and approaches the right cushion side frame 11, and is substantially straight rearward at the third portion 113. After the extension, the fourth portion 114 is provided so as to extend obliquely rearward to the right and further approach the right cushion side frame 11, so that the duct D is arranged so as to gradually approach the right cushion side frame 11. Can be. Thus, a rapid change in the flow path in the duct D can be suppressed, so that the air can be satisfactorily flowed in the duct D.

  As shown in FIG. 9, a cover member 80 is disposed on the back frame F2. The cover member 80 is a member that covers the back connection portion 170, which is a portion where the duct D connects to the ventilation path A2 of the seat back S2, from the rear side. The cover member 80 is formed in a plate shape that is long from side to side from resin or the like. The left and right ends of the cover member 80 are fixed to portions extending inwardly of the rear ends of the pair of back side frames 21 in the left and right directions by bolting or the like. By providing such a cover member 80, the portion where the duct D and the pad P of the seat back S2 (back pad P2) are connected can be protected by the cover member 80.

As shown in FIGS. 10 and 11, the vehicle seat S further includes a side frame cover 90. The side frame cover 90 is a member that covers the rear end of the right cushion side frame 11. The side frame cover 90 is made of resin, and has a side frame cover portion 91, a duct cover portion 92, and a reclining mechanism cover portion 93.
The side frame cover portion 91 is a portion that covers the inside of the rear end of the right cushion side frame 11 in the left-right direction. The side frame cover 91 is disposed so as to cover the front, lower, and rear sides of the lower end of the back side frame 21.

  The duct cover portion 92 is a portion that covers the evacuation portion 190, which is a part of the duct D, behind the cushion frame F1. Specifically, the duct cover portion 92 is disposed behind the rear pipe 13 and covers the first narrow portion 131, the second narrow portion 132, and the bellows portion 140. The duct cover portion 92 includes a first side cover portion 92A extending rearward from the rear end of the side frame cover portion 91 to a position after the retracting portion 190, and a left-right inward from the rear end of the first side cover portion 92A. And a rear cover portion 92B extending toward the rear and covering the retreating portion 190 from behind. The rear cover portion 92 </ b> B has an arcuate cross-sectional shape projecting obliquely downward rearward, and extends forward along the retreating portion 190 as it goes downward.

  The reclining mechanism cover 93 is a portion that covers the reclining mechanism RL, and is formed in a substantially cup shape with the inner side and the lower side in the left-right direction opened. The reclining mechanism cover 93 is formed so as to extend from the side frame cover 91 along the peripheral surface of the reclining mechanism RL, and covers a rear surface, an upper side, and a front side of the reclining mechanism RL, and a reclining mechanism 93A. And a second side cover portion 93B that covers the outside of the RL in the left-right direction.

  The side frame cover portion 91, the duct cover portion 92, and the reclining mechanism cover portion 93 may be integrally formed as one component, or may be partially configured as another component. As an example, the duct cover portion 92 is formed such that the duct cover portion 92 is formed integrally with the side frame cover portion 91 and the reclining mechanism cover portion 93 is formed separately from the rear end portion of the side frame cover portion 91. The configuration in which the reclining mechanism cover 93 is attached to the side frame cover 91 can be provided by engaging the claws provided on the reclining mechanism cover 93 with the holes provided.

  By providing the duct cover portion 92 and the side frame cover portion 91 integrally, it is not necessary to separately provide the cover of the cushion side frame 11 and the cover of the duct D, so that the number of parts of the vehicle seat S can be reduced. . When the side frame cover 91, the duct cover 92, and the reclining mechanism cover 93 are provided integrally, the side frame cover 90 has not only the function of protecting the duct D but also the function of protecting the reclining mechanism RL. Therefore, the number of parts of the vehicle seat S can be further reduced.

As shown in FIG. 2, the pad P includes a cushion pad P1 forming a pad of the seat cushion S1, and a back pad P2 forming a pad of the seat back S2.
As shown in FIG. 1, the cushion pad P1 has a central portion P11 and a pair of left and right side portions P12 provided on both left and right sides of the central portion P11 and extending above the central portion P11. The pad P2 has a central portion P21 and a pair of left and right side portions P22 provided on both left and right sides of the central portion P21 and projecting forward from the central portion P21.

  As shown in FIG. 12, the cushion pad P1 includes a first member 210 in which a groove 211 forming the ventilation path A1 is formed, and a plate-shaped second member in which the first ventilation hole H1 penetrates vertically. And a member 220. Further, the first member 210 includes a first member main body 230 and a plate-shaped groove forming member 240 in which the groove 211 penetrates vertically. The groove forming member 240 is arranged so as to overlap the upper surface of the first member main body 230, and the second member 220 is arranged so as to overlap the upper surface of the groove forming member 240 (the first member 210). .

  The first member main body 230 has a main body central portion 231 that forms a central portion P11 together with the groove forming member 240 and the second member 220. A pair of side portions P12 are formed on both left and right sides of the main body central portion 231. The main body center portion 231 has a concave portion 232 on the front side where the groove forming member 240 and the second member 220 are arranged to overlap. A second ventilation hole 250 penetrating vertically is formed at the rear end of the bottom surface of the concave portion 232. The second ventilation hole 250 communicates with the ventilation path A1 from the lower surface of the first member main body 230 (the cushion pad P1). The duct D is connected to the cushion pad P1 by inserting the cushion connection portion 116 (see FIG. 6) into the second ventilation hole 250 from below. As shown in FIG. 13, the second ventilation hole 250 is arranged at a position shifted to the right from the center in the left-right direction of the cushion pad P1 (see the dashed line).

  The groove forming member 240 has a vertically penetrating groove 211 that forms the ventilation path A1. In the ventilation path A1 of the cushion pad P1, the groove forming member 240 and the second member 220 are arranged on the concave portion 232 of the first member main body 230 so as to overlap in this order. It is formed by being closed by the member main body 230. The ventilation path A1 includes a first ventilation path 261, a second ventilation path 262, a third ventilation path 263, a fourth ventilation path 264, and a fifth ventilation path 265 when viewed from above.

The first ventilation path 261 extends in a direction intersecting in the left-right direction, specifically, substantially in the front-rear direction. The rear end, which is one end of the first ventilation path 261, communicates with the blower 70 via the fourth ventilation path 264, the fifth ventilation path 265, the second ventilation hole 250, and the duct D.
The second ventilation path 262 extends in a direction different from the direction in which the first ventilation path 261 extends from the front end, which is the other end of the first ventilation path 261, specifically, inward in the left-right direction.
The third ventilation path 263 extends in the left-right direction from an inner end in the left-right direction that is the end of the second ventilation path 262 opposite to the first ventilation path 261 side, specifically, the first ventilation path 261. And extends substantially parallel to the first ventilation path 261 toward the rear end side.

  In the present embodiment, two substantially U-shaped flow paths including the first ventilation path 261, the second ventilation path 262, and the third ventilation path 263 are formed symmetrically with respect to the center in the left-right direction of the cushion pad P1. ing. Thereby, the occupant can be supported in a well-balanced manner at the portion of the cushion pad P1 where the ventilation path A1 is not formed, so that the ventilation path A1 is formed by the first ventilation path 261, the second ventilation path 262, and the third ventilation path 263. Also in the configuration including, the seating feeling when sitting on the seat can be improved.

The fourth ventilation path 264 is a flow path that connects the rear ends of the left and right first ventilation paths 261 and extends substantially right and left.
The fifth ventilation path 265 is a flow path connecting the second ventilation hole 250 and the fourth ventilation path 264, and extends substantially forward and backward. Specifically, the fifth ventilation path 265 extends diagonally forward toward the left-right center of the cushion pad P1 from the second ventilation hole 250 disposed at a position shifted rightward from the left-right center of the cushion pad P1, The fourth air passage 264 is connected to a central portion in the left-right direction.
The groove forming member 240 is fixed to the first member main body 230 with an adhesive or the like.

  The second member 220 has a plurality of first ventilation holes H1 communicating with the ventilation path A1. The first ventilation hole H1 of the cushion pad P1 includes a first hole 271, a second hole 272, a third hole 273, and a fourth hole 274.

The first hole 271 is a hole that communicates with the first air passage 261, and is formed in a plurality along the first air passage 261 that extends substantially forward and backward. Specifically, the first holes 271 are arranged side by side in the left-right direction outside the first holes 271A that are arranged substantially in front and rear along the first ventilation path 261 and the first holes 271A that are located behind the first holes 271A. One first hole 271B.
The second hole 272 is a hole that communicates with the third ventilation path 263, and is formed in a plurality along the third ventilation path 263 that extends substantially forward and backward. Specifically, the second holes 272 are composed of two arranged substantially in front and rear along the third ventilation path 263.
The row of the first holes 271A and the row of the second holes 272 arranged in front and rear are arranged in the direction in which the second ventilation path 262 extends, specifically, in the left-right direction.

The third hole 273 is a hole communicating with the rear end of the first ventilation path 261, and the fourth hole 274 is a hole communicating with the left and right ends of the fourth ventilation path 264.
The second member 220 is fixed to the groove forming member 240 and the first member main body 230 (the first member 210) with an adhesive or the like.

  As shown in FIG. 4, the front pipe 14 is arranged below the cushion pad P1 in a state where the cushion pad P1 covers the cushion frame F1. In this state, the front pipe 14 is disposed at a position different from the first ventilation path 261, the second ventilation path 262, and the third ventilation path 263 when viewed from above. Specifically, the front pipe 14 is disposed behind the first ventilation path 261, the second ventilation path 262, and the third ventilation path 263 when viewed from above.

  In a state where the cushion pad P1 covers the cushion frame F1, the pan frame 12 is disposed below the front end of the cushion pad P1, and supports the cushion pad P1 from below. In this state, the pan frame 12 is disposed so as to overlap with the first ventilation path 261, the second ventilation path 262, and the third ventilation path 263 when viewed from above. In other words, the pan frame 12 is disposed below a portion where the first ventilation path 261, the second ventilation path 262, and the third ventilation path 263 are formed. In the present embodiment, the pan frame 12 corresponds to a “pad support member”. The portion of the cushion pad P1 where the air passages 261 to 265 are formed is more easily deformed than the portion where the air passages 261 to 265 are not formed, but in the present embodiment, the air passages 261 to 263 are not formed. Since the formed portion can be supported by the pan frame 12, excessive deformation of the cushion pad P1 can be suppressed. In particular, in the present embodiment, the easily deformable portion of the cushion pad P1 where the air passages 261 to 263 are formed can be supported by the plate-shaped pan frame 12, so that excessive deformation of the cushion pad P1 is further suppressed. can do.

  As shown in FIG. 14, the back pad P2 includes a first member 310 in which a groove 311 forming an air passage A2 is formed, and a plate-shaped second member in which a first air hole H2 penetrates back and forth. It is configured to include a member 320 and a third member 330. The second member 320 and the third member 330 are arranged so as to overlap the front surface of the first member 310. In the present embodiment, the back pad P2 corresponds to a “pad member that covers the occupant side of the pressure receiving member”.

The first member 310 has a bottomed groove 311 that is concave toward the rear, and a second ventilation hole 350 that penetrates back and forth.
In the ventilation path A2 of the back pad P2, the second member 320 and the third member 330 are arranged in an overlapping manner before the first member 310, and the front side of the groove 311 is closed by the second member 320 and the third member 330. It is formed by that. The ventilation path A2 includes a first path 361, a pair of second paths 362, a pair of third paths 363 as a pair of third ventilation paths, and a pair of fourth paths 364 and two of the fourth ventilation paths. A fifth path 365, a sixth path 366, a seventh path 367, and a pair of branch paths 368 as a first ventilation path are included.

The first path 361, the second path 362, the third path 363, the fourth path 364, and the fifth path 365 are formed near the center in the vertical direction of the central portion P21.
The first path 361 extends in the left-right direction. The second ventilation hole 350 communicates from the rear surface of the first member 310 (back pad P2) to the first path 361 forming the ventilation path A2. The duct D is connected to the back pad P2 by inserting the back connection part 170 (see FIG. 6) into the second ventilation hole 350 from the rear side.

The second path 362 extends obliquely upward and outward from the left and right ends of the first path 361 in the left-right direction.
The third path 363 extends from the upper end of the second path 362 in the up-down direction (a direction perpendicular to the left-right direction), specifically, upward. The pair of third paths 363 are arranged side by side in the left-right direction.
The fourth path 364 extends from the upper end of the third path 363 diagonally upward and inward in the left-right direction, and the upper ends are connected to each other. In other words, the pair of fourth paths 364 connects the upper ends of the pair of third paths 363.

  The fifth path 365 is disposed at a position inside the pair of third paths 363 in the left-right direction, extends in the left-right direction, and connects the pair of third paths 363 to each other. The two fifth paths 365 are arranged side by side in the vertical direction. The first path 361, the second path 362, the third path 363, and the fourth path 364 have substantially the same longitudinal dimension (depth) of the groove, but the fifth path 365 has a longitudinal dimension of the groove. Are smaller (shallower) than these.

The sixth path 366 and the seventh path 367 are formed in an upper part of the central part P21.
The seventh path 367 extends in the left-right direction.
The sixth path 366 is a flow path that connects the upper ends of the pair of fourth paths 364 and the center of the seventh path 367 in the left-right direction, and extends substantially up and down.

  The branch path 368 extends from the vicinity of the center in the vertical direction of the third path 363 toward the outside in the left-right direction along the front surface of the back pad P2. More specifically, as shown in FIG. 15, the branch path 368 is vertically moved from near the center in the vertical direction of the third path 363 toward the outside in the left-right direction of the back pad P2 (the other side in the orthogonal direction). It extends obliquely to the direction. In other words, the branch path 368 extends obliquely upward from the vicinity of the center of the third path 363 in the vertical direction to the outside in the left-right direction. In the present embodiment, a portion extending downward (one side in the orthogonal direction) from the position of the third path 363 connected to the branch path 368, the second path 362, and the first path 361 are connected to the branch path 368. This corresponds to a “second ventilation path” communicating with the second ventilation hole 350.

  The second member 320 and the third member 330 have a plurality of first ventilation holes H2 (see FIG. 14) communicating with the ventilation path A2. The first ventilation hole H2 of the back pad P2 is formed in the first member 371, the second member 372, the third member 373, the fourth member 374, the fifth member 375 formed in the second member 320, and the third member 330. And a sixth hole 376 formed.

The first hole 371 is a hole communicating with the vicinity of the lower end of the third path 363.
The second hole 372 is a hole communicating with the vicinity of the center of the third path 363 in the vertical direction, in other words, the position where the branch path 368 of the third path 363 connects.
The third hole 373 is a hole communicating with the vicinity of the lower end of the fourth path 364.
The fourth holes 374 are holes that communicate with the fifth paths 365, and are formed at a position facing the center of each fifth path 365 in the left-right direction and the vicinity of both ends, for a total of six holes.
The fifth hole 375 is a hole communicating with the branch path 368. The fifth hole 375 is disposed at an end of the central portion P21 in the left-right direction, more specifically, at the left and right ends of the second member 320.
The sixth holes 376 are holes that communicate with the seventh path 367, and are formed one by one at positions facing the left and right ends of the seventh path 367.

  The back pad P2 has a substantially U-shaped suspension groove 380 on both the left and right sides and the upper side (one side in a direction orthogonal to the left and right direction) of the second member 320 as a ventilation hole forming portion. In the back pad P2, a suspending wire (not shown) for suspending the skin U2 (see FIG. 16) in the suspending groove 380 is embedded by insert molding along the suspending groove 380 by insert molding. It is partially exposed from the plurality of holes 381 formed in the bottom of the groove 380. The skin U2 of the seat back S2 is fixed to the back pad P2 by engaging a hook or the like provided on the skin U2 with a portion exposed from the hole 381 of the suspension wire.

As shown in FIG. 16, in the branch path 368, the skin U <b> 2 is suspended in the suspension groove 380, and the skin U <b> 2 closes one end, which is one end, in the left-right direction. The branch path 368 has a facing surface 368A facing the fifth hole 375. The facing surface 368 </ b> A is disposed at an end on the left and right outer side of the branch path 368. More specifically, the facing surface 368A is arranged at a position outside the left-right direction from the center position in the left-right direction of the branch path 368. The facing surface 368A is inclined so as to approach the front side as approaching the edge of the back pad P2 viewed from the front side, specifically, the outer edge in the left-right direction. The facing surface 368A is formed on the first member 310.
The second member 320 and the third member 330 (see FIG. 14) are fixed to the first member 310 with an adhesive or the like.

  Returning to FIG. 15, the ventilation path A2 is disposed so as to intersect with the wire member 60 when viewed from the front side. Specifically, the second path 362 and the fourth path 364 extending obliquely are arranged so as to intersect with the extending portion 61 of the wire member 60 when viewed from the front side. The fifth path 365 is arranged such that the left and right ends intersect with the extending portion 61. On the other hand, the first path 361 and the third path 363 are arranged at positions different from the extending portions 61 when viewed from the front side. More specifically, the first path 361 is disposed at a position inside the extension 61 in the left-right direction, and the third path 363 is disposed at a position outside the extension 61 in the left-right direction. The sixth path 366 is disposed at a position inside the lower end of the inclined portion 62 of the wire member 60 and the lower end of the upper connecting portion 63 in the left-right direction. It is arranged at a position inside the direction.

  The cushion pad P1 and the back pad P2 are configured to include first members 210 and 310 in which ventilation paths A1 and A2 are formed, and second members 220 and 320 in which first ventilation holes H1 and H2 are formed. Therefore, the pad P can be easily formed as compared with the case where the pads having the ventilation paths A1 and A2 and the first ventilation holes H1 and H2 are integrally formed. Furthermore, the cushion pad P1 having the ventilation path A1 including the ventilation paths 261 to 263 and the back pad P2 having the ventilation path A2 having the inclined facing surface 368A can be easily formed. Further, as for the cushion pad P1, since the first member 210 is composed of the first member main body 230 and the groove forming member 240, the first member 210 has the complicated shape ventilation path A1 including the ventilation paths 261 to 263. One member 210 can be easily formed. Thereby, the cushion pad P1 can be formed more easily.

  According to the present embodiment described above, as shown in FIG. 2, the duct D (the retracting portion 190) can be protected by the duct cover portion 92 of the side frame cover 90 at the rear portion of the seat cushion S <b> 1. It is possible to suppress the feet of the occupant of the seat from hitting the duct D.

  Further, since the duct cover portion 92 covers the bellows portion 140, it is possible to prevent the feet of the rear passenger from hitting the bellows portion 140 which is a soft portion of the duct D.

  In addition, since the bellows portion 140 is located above the lower end 13A of the rear pipe 13, the feet of the rear passenger are lower than in the case where the bellows portion is located below the lower end 13A of the rear pipe 13. Of the bellows part 140 can be further suppressed.

  Further, since the narrow portions 131 and 132 have a small size (width) in the left-right direction, it is possible to prevent the feet of the rear occupant from hitting the narrow portions 131 and 132 of the duct D. Further, since the narrow portions 131 and 132 have small left and right dimensions and large substantially front and rear dimensions, and have a shape that is strong against a load from substantially the front and rear direction, temporarily, the feet of the occupants in the rear seats may be narrow. Even when it hits 131 and 132, the deformation of the duct D can be suppressed.

  Further, according to the present embodiment, as shown in FIG. 8, the retracting portion 190 of the duct D is arranged close to the right cushion side frame 11 at the rear portion of the seat cushion S1, so that the rear seat is provided. Can be prevented from hitting the duct D.

  Further, since the evacuation portion 190 extends obliquely so as to be positioned forward as it goes downward, the evacuation portion 190 of the duct D is arranged at the rear of the seat cushion S1 so as to be separated from the feet of the rear occupant. Will be. Thus, it is possible to further suppress the foot of the rear passenger from hitting the duct D.

  Further, according to the present embodiment, since the back connection portion 170 of the duct D can be connected to the ventilation path A2 formed in the back pad P2 through the opening 50A of the pressure receiving member 50, the vehicle seat S has a plate shape. Even in the configuration including the pressure receiving member 50, the ventilation path A2 of the back pad P2 and the duct D can be easily connected.

  In addition, since the opening 50A is disposed at a position that does not overlap with the S spring 40 when viewed from the rear side, the back connection portion 170 of the duct D can be easily passed through the opening 50A of the pressure receiving member 50. Thereby, the ventilation path A2 of the back pad P2 and the duct D can be more easily connected.

  According to the present embodiment, as shown in FIG. 13, the first ventilation hole H1 of the cushion pad P1 communicates with the first hole 271 communicating with the first ventilation path 261 and the third ventilation path 263. Since it includes the second hole 272, air can be passed over a wide area of the sheet surface. On the other hand, since the first ventilation path 261, the second ventilation path 262, and the third ventilation path 263 can be formed as continuous flow paths, the number of flow paths communicating with the blower 70 can be reduced. Thereby, the flow of air can be suppressed from weakening in the ventilation path A1, so that the air can flow well in the cushion pad P1.

  Further, since the row of the first holes 271A and the row of the second holes 272 are arranged side by side in the left-right direction, air can be passed through a wider area of the sheet surface, and the plurality of first ventilation holes H1 can be formed. It can be arranged efficiently.

  Further, since the fifth air passage 265 extends diagonally forward from the second air hole 250 toward the center in the left-right direction and is connected to the fourth air passage 264, the fifth air passage 265 connecting the second air hole 250 and the fourth air passage 264 is formed. There is no sharply bent portion in the air passage 265. This allows air to flow from the second ventilation hole 250 to the fourth ventilation path 264 through the fifth ventilation path 265, and further to the first ventilation path 261, the second ventilation path 262, and the third ventilation path 263. It is possible to satisfactorily flow into the ventilation hole H1.

  Further, according to the present embodiment, as shown in FIG. 16, the facing surface 368A of the branch path 368 of the back pad P2 is inclined so as to approach the front side as approaching the outer edge in the left-right direction. Air passing through the hole 375 can flow along the slope of the facing surface 368A. Thereby, air can be satisfactorily flowed.

  Further, since the opposing surface 368A is disposed at the left and right outer ends of the branch path 368, the opposing surface allows air to flow as compared with the case where the opposing surface is disposed in the middle of the long branch path 368. The slope of 368A can be used effectively. This allows the air to flow better.

  In addition, since the fifth hole 375 is disposed at the end of the central portion P21 in the left-right direction, when air (see the broken line) is blown out from the fifth hole 375, it flows vigorously along the slope of the facing surface 368A. Air can be blown out of the fifth hole 375 so as to graze the occupant's body. Thereby, the cooling sensation can be increased.

  Further, since the branch path 368 extends obliquely upward and outward in the left-right direction so as to move away from the second ventilation hole 350, the air flowing in from the second ventilation hole 350 passes through the first path 361 and the second path 362 to the third path. Flow can be favorably made from the path 363 to the branch path 368.

As mentioned above, although one embodiment of the invention was described, the present invention is not limited to the embodiment. The specific configuration can be appropriately changed without departing from the spirit of the invention as described below. In the following, the same components as those of the above-described embodiment are denoted by the same reference numerals, and the description thereof will not be repeated.
For example, as shown in FIG. 17, in the side frame cover 90, the duct cover portion 92 has a rib-shaped convex portion 95 protruding from the inner surface toward the duct D, and the convex portion 95 is formed of the bellows portion 140. It is good also as a structure which goes into a valley and engages. According to this, since the position of the duct D can be regulated by the engagement between the duct D and the projection 95 of the duct cover 92, the movement of the duct D can be suppressed.

  Also, as shown in FIG. 17, the opening 50A of the pressure receiving member 50 may be provided so that the duct D can be held at the opening edge. According to such a configuration, since the duct D can be held by the pressure receiving member 50, it is not necessary to separately provide a member for holding the duct D, and the number of parts of the vehicle seat S can be reduced. As shown in FIG. 8, when the opening 50 </ b> A is arranged between the pair of extending portions 61 of the wire member 60 and the duct D is held by the pressure receiving member 50, the Since the duct D can be held at a portion having high rigidity between the pair of extending portions 61, the duct D can be firmly held by the pressure receiving member 50.

  In the above-described embodiment, the opening 50A of the pressure receiving member 50 is disposed between the pair of extending portions 61. However, the present invention is not limited to this. For example, the opening may be in the left-right direction (the direction orthogonal to the predetermined direction). May be arranged outside the extending portion 61. As an example, as illustrated in FIG. 18, the opening 50 </ b> B for passing the duct D is disposed at a position outside the extension 61 in the left-right direction, specifically, at a position on the right of the right extension 61. I have. Since the left and right outer portions of the pair of extending portions 61 of the pressure receiving member 50 are more flexible than the portion between the pair of extending portions 61, the opening 50 </ b> B is arranged in the portion that is more flexible, so that the duct is formed in the opening 50 </ b> B. D can be easily connected. Note that the opening 50B may be arranged at a position on the left side of the left extending portion 61.

  In the above-described embodiment, the pressure receiving member 50 is connected to the back frame F2 by one wire member 60. However, the present invention is not limited to this, and the pressure receiving member 50 may be connected to the back frame F2 by two wire members. Good. In the above-described embodiment, one wire member 60 has a pair of extending portions 61. However, when the pressure receiving member 50 is connected to the back frame F2 with two wire members, each wire member 60 May have a configuration having one extending portion.

  Further, in the above-described embodiment, the pressure receiving member 50 does not operate. However, the present invention is not limited to this. For example, the pressure receiving member 50 may move forward and backward, or bend forward to the side of the occupant. The shape of the portion corresponding to the waist of the occupant may be changed to change the support state of the occupant's waist. In this case, a pressure receiving member driving device such as an actuator for moving the pressure receiving member 50 will be described with reference to FIG. 8. One of the pair of back side frames 21, specifically, the left back side frame 21 It is desirable that they are arranged. The duct D is disposed at a position closer to the right (the other) back side frame 21 than the left (one) back side frame 21 of the pair of back side frames 21 in the left-right direction. Thus, it is possible to suppress interference with the pressure receiving member driving device, the electric wire extending from the pressure receiving member driving device, and the like. Further, it is desirable that the pressure receiving member driving device is disposed inside the pair of side frames in the left-right direction. Thereby, the vehicle seat can be made compact left and right.

  When the pressure receiving member driving device is disposed on the right back side frame 21 or the cushion side frame 11 and the position in the left-right direction overlaps with the duct D, the pressure receiving member driving device is positioned in the front-rear direction or the vertical position. Is desirably different from the duct D. For example, it is desirable to arrange the pressure receiving member driving device before and after the duct D. According to this, the interference between the duct D and the pressure receiving member driving device can be suppressed. In addition, by arranging the duct in the seat cushion below the pressure receiving member driving device and arranging the duct in the seat back behind the pressure receiving member driving device, interference between the duct and the pad can be suppressed. . When the pressure receiving member 50 moves back and forth, as shown in FIG. 17, it is desirable to provide a bellows portion 171 that expands and contracts back and forth at the rear end of the back connection portion 170. According to this, when the pressure receiving member 50 moves, the duct D can be prevented from coming off the back pad P2. Further, the pressure receiving member driving device is not limited to the actuator, and may be, for example, a control unit for controlling the actuator.

  Further, in the above-described embodiment, the side frame cover 90 is configured to cover the rear end portion that is a part of the cushion side frame 11, but is not limited thereto. For example, the side frame cover 90 may be configured to cover the entire cushion side frame 11. There may be. Further, for example, the duct cover portion 92 may be configured to cover only a part of the bellows portion 140 as a flexible portion, or may be configured to cover the entirety.

  Further, in the above-described embodiment, as shown in FIG. 4, the pan frame 12 as the pad support member is disposed so as to overlap with the entire ventilation passages 261 to 263, but is not limited thereto. For example, referring to FIG. 4, the pan frame 12 is disposed so as to overlap the entire second air passage 262 and the front portions of the first air passage 261 and the third air passage 263 when viewed from above. May be. In other words, the pad support member may be disposed so as to overlap at least a part of the first, second, and third ventilation paths. The pad support member is not limited to a plate-like member such as the pan frame 12, and may be, for example, a member made of a pipe material.

  Further, in the above embodiment, the cushion pad P1 is provided with a plurality of first holes 271 and a plurality of second holes 272 as the first ventilation holes H1, but is not limited thereto. For example, a plurality of first holes may be formed. The configuration may be such that only one second hole is provided, or vice versa. In other words, at least one first hole and at least one second hole may be formed. Further, in the embodiment, the second ventilation hole 250 of the cushion pad P1 is arranged at a position shifted rightward from the center in the left-right direction. However, the present invention is not limited to this. May be arranged at a position deviated from each other, or may be arranged at the center in the left-right direction. Further, in the above-described embodiment, two flow paths including the ventilation paths 261 to 263 are formed. However, the number of flow paths is not limited thereto, and may be three or more, or may be one.

  Further, in the above-described embodiment, one end of the branch path 368 (first ventilation path) is closed. However, the present invention is not limited to this, and may be configured not to be closed. Further, a plurality of fifth holes 375 (first ventilation holes) communicating with the first ventilation paths may be provided for each of the first ventilation paths.

  Further, in the above-described embodiment, the cushion pad P1 and the back pad P2 are configured to include a plurality of members. However, the present invention is not limited to this. For example, each pad may be configured by one member.

  Further, in the above-described embodiment, the duct D has the bellows portion 140 as a flexible portion, but the present invention is not limited to this, and the configuration of the flexible portion is not particularly limited as long as it has flexibility.

  Further, in the above-described embodiment, a support member having a plurality of wire members 31 and a resin member 32 connecting the wire members 31 is exemplified, but the support member is not limited to this. For example, the support member may have a configuration in which substantially the entirety of a plurality of wire members are covered with a resin member (resin) and connected. Further, the support member may be configured by only a wire-shaped member such as an S spring.

  Further, in the above-described embodiment, a sirocco fan has been exemplified as the blower 70, but the present invention is not limited to this. For example, a propeller fan or a turbo fan may be used. In the above-described embodiment, the vehicle seat S is configured to blow air from the first ventilation holes H1 and H2. However, the present invention is not limited to this. For example, the vehicle seat S may be configured to suck air from the first ventilation holes. It may be. Further, the blower may be one that can switch between blow and suction, for example, by switching the rotation direction of the impeller. Further, in the above-described embodiment, the vehicle seat S includes the blower 70, but the vehicle seat itself may not include the blower. In other words, the blower may be provided on the body of an automobile on which the vehicle seat is mounted. In this case, the vehicle seat may be configured such that the duct is connected to, for example, an air outlet or a suction port provided in the vehicle body.

  Further, in the above-described embodiment, the weight sensor WS that detects the weight of the seat is exemplified as the sensor disposed below the cushion side frame 11, but is not limited thereto. It may be a position sensor or the like.

  Further, the same configuration as the frame or pad of the seat cushion S1 described in the above embodiment may be applied to the seat back, or the same configuration as the frame or pad of the seat back S2 may be applied to the seat cushion. Is also good. Further, in the above-described embodiment, the air passage is formed in both the seat cushion and the seat back. However, the present invention is not limited to this, and the air passage may be formed in only one of the seat cushion and the seat back. Good.

  Further, in the above-described embodiment, the vehicle seat S mounted on the vehicle is exemplified as the vehicle seat, but the vehicle seat S is not limited to this, and the vehicle seat S is mounted on a vehicle other than the vehicle, for example, a railway vehicle, a ship, an aircraft, and the like. It may be.

  Further, the components described in the above-described embodiment and the modification may be arbitrarily combined and implemented.

Reference Signs List 21 back side frame 24 lower frame 40 S spring 50 pressure receiving member 50A opening 60 wire member 61 extending portion 70 blower 80 cover member 150 first flat portion 160 second flat portion 170 back connection portion A2 ventilation path D duct F2 back frame P2 Back pad S Vehicle seat

Claims (7)

A pair of side frames,
A connection frame for connecting the pair of side frames,
A plate-shaped pressure-receiving member that receives a load from an occupant;
A pad member that covers an occupant side of the pressure receiving member;
A duct that connects an air passage and a blower formed in the pad member,
The duct is connected to the ventilation path from the side opposite to the occupant side of the pad member, is arranged on the opposite side to the occupant side of the connection frame, and has a dimension in an opposing direction facing the connection frame, A first flat portion smaller than a dimension in a direction orthogonal to the facing direction;
A vehicle seat, wherein the pressure receiving member has an opening through which the duct passes. A pair of side frames,
An S spring mounted on the pair of side frames,
A plate-shaped pressure-receiving member that receives a load from an occupant;
A pad member that covers an occupant side of the pressure receiving member;
A duct that connects an air passage and a blower formed in the pad member,
The duct is connected to the ventilation path from the side opposite to the occupant side of the pad member,
The pressure receiving member, possess an opening for the passage of the duct,
The vehicle seat, wherein the opening is arranged at a position not overlapping with the S spring when viewed from a passenger side. A pair of side frames,
An S spring mounted on the pair of side frames,
A plate-shaped pressure-receiving member that receives a load from an occupant;
A pad member that covers an occupant side of the pressure receiving member;
A duct that connects an air passage and a blower formed in the pad member,
The duct is connected to the ventilation path from the side opposite to the occupant side of the pad member, is disposed on the opposite side to the occupant side of the S spring, the dimension in the facing direction facing the S spring, A second flat portion smaller than a dimension in a direction orthogonal to the facing direction;
A vehicle seat, wherein the pressure receiving member has an opening through which the duct passes. A plate-shaped pressure-receiving member that receives a load from an occupant;
A pad member that covers an occupant side of the pressure receiving member;
A duct that connects an air passage and a blower formed in the pad member,
The duct is connected to the ventilation path from the side opposite to the occupant side of the pad member,
The pressure receiving member, possess an opening for the passage of the duct,
A wire member connecting the pressure receiving member to a frame of a seat,
The wire member has an extending portion extending in a predetermined direction at a position overlapping the pressure receiving member when viewed from the occupant side,
The vehicle seat, wherein the opening is disposed outside the extending portion in a direction orthogonal to the predetermined direction. The vehicle seat according to any one of claims 1 to 4, further comprising a cover member that covers a portion of the duct that connects to the ventilation path from a side opposite to an occupant. A wire member connecting the pressure receiving member to a frame of a seat,
The wire member has a pair of extending portions that extend in a predetermined direction and are arranged in a direction orthogonal to the predetermined direction, at a position overlapping the pressure receiving member when viewed from an occupant side,
The vehicle seat according to any one of claims 1 to 5, wherein the opening is arranged between the pair of extending portions.   A pair of side frames,
  A connection frame for connecting the pair of side frames,
A seat frame including the pair of side frames and the connection frame,
  A blower,
  The vehicle seat according to any one of claims 1 to 6, further comprising a skin covering the pad member.

Images