JP7157300B2 - vehicle seat - Google Patents

Description

The present invention relates to a vehicle seat comprising a seat cushion and a seat back.

Conventionally, a seat cushion and a seat back in which an air outlet and an air passage are formed, an air blower attached to the bottom surface of the seat cushion, and a duct connecting the air blower and the air passage of the seat back are provided. , a vehicle seat that is configured to send conditioned air to an air outlet through an air passage or a duct is known (Patent Document 1).

JP 2009-023477 A

By the way, in the conventional technology, since the duct extends from the rear end of the seat cushion and is arranged to face the seat back, there is a risk that the legs of the rear seat occupant may hit the duct.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a vehicle seat that can prevent the legs of rear seat passengers from hitting the duct.
Another object of the present invention is to facilitate the work of fixing the skin of the seat cushion.
Another object of the present invention is to protect the duct.
Another object of the present invention is to prevent the seat from becoming large.
Another object of the present invention is to suppress interference between the duct and other members.

The present invention for achieving the above object is a vehicle seat comprising a seat cushion and a seat back, comprising left and right cushion side frames constituting left and right frames of the seat cushion, the seat cushion and the seat back. and a duct that connects an air passage formed in at least one of the seat cushion and the seat back to an air blower, the duct extending laterally outward of the cushion side frame. It is characterized in that it is arranged so as to pass through and go from the seat cushion to the seat back.

According to such a configuration, it is possible to prevent the legs of the passengers in the rear seats from hitting the duct. In addition, since the duct does not pass through the rear side of the rear frame that connects the rear portions of the left and right cushion side frames, the duct does not get in the way when fixing the seat cushion skin to the rear frame. Fixing work can be facilitated.

The vehicle seat includes a cover member that covers at least a portion of the cushion side frame from the outside in the left-right direction, and a portion of the duct is arranged between the cushion side frame and the cover member. can do.

According to this, the duct can be protected using the cover member that covers the cushion side frame.

The vehicle seat includes left and right back side frames forming left and right frames of the seat back, and the cover member covers a connecting portion between a rear portion of the cushion side frame and a lower portion of the back side frame. It can be configured as follows.

According to this, while the duct is protected by the cover member, the duct can be arranged so as to extend from the seat cushion toward the seat back through the connecting portion between the cushion side frame and the back side frame. As a result, the ducts can be arranged more compactly than the case where the ducts are arranged so as to avoid the connection portion on the left-right direction outside of the cushion side frames, and an increase in the size of the seat can be suppressed. .

In the vehicle seat described above, the duct may have a flexible portion, and the flexible portion may be arranged between the cushion side frame and the cover member.

According to this, the soft flexible portion of the duct can be protected by the cover member.

In the above-described vehicle seat, the shape of the cross section of the flow path of the portion of the duct located outside the cushion side frame in the left-right direction is configured so that the dimension in the left-right direction is smaller than the dimension in the direction orthogonal to the left-right direction. be able to.

According to this, the duct can be compactly arranged in the left-right direction on the outside of the cushion side frame in the left-right direction, so it is possible to suppress the size of the seat from increasing in the left-right direction.

In the above-described vehicle seat, the vehicle door is arranged on one side in the left-right direction, and the duct passes through a cushion side frame arranged on the other side in the left-right direction to the outside in the left-right direction. It can be arranged so as to face the seat back from the seat cushion.

According to this, since the duct is arranged opposite to the door in the left-right direction, it is possible to prevent the occupant's feet from hitting the duct when the occupant gets into the vehicle, thereby protecting the duct. be able to.

The vehicle seat includes a front link rotatably coupled to the front portion of the cushion side frame, a rear link rotatably coupled to the rear portion of the cushion side frame, and a lower portion of the front link. a link support member rotatably coupled to the lower portion of the rear link rotatably coupled thereto, the duct passing between the front link and the rear link. can.

According to this, when the duct is arranged so as to extend from the left-right direction outside of the cushion side frame toward the bottom of the seat cushion through the lower side of the cushion side frame, it is possible to prevent the duct from interfering with the front and rear links. .

In the above-described vehicle seat, the seat cushion includes a cushion frame forming a frame of the seat cushion and a cushion pad covering the cushion frame, and the ducts are provided on the left and right sides of the cushion side frame of the cushion pad. It can be configured to pass under the portion located on the direction outside.

According to this, the duct can be arranged more compactly in the left-right direction than when the duct passes through the outer side of the cushion pad in the left-right direction. As a result, it is possible to prevent the seat from increasing in size in the left-right direction.

The vehicle seat includes left and right back side frames forming left and right frames of the seat back, and the duct is arranged above a connecting portion between the rear portion of the cushion side frame and the lower portion of the back side frame. , extending upward through the left-right direction outer side of the back side frame, and an upper end portion passing through the rear side of the back side frame to be connected to an air passage formed in the seat back. .

According to this, compared to the case where the duct is connected to the seat back through the rear side of the back side frame from the vicinity of the connecting portion between the cushion side frame and the back side frame, the duct is located on the rear side of the back side frame. The passing part can be placed at a higher position. As a result, it is possible to more reliably prevent the legs of the passengers in the rear seats from hitting the duct.

According to the present invention, it is possible to prevent the legs of the passengers in the rear seats from hitting the duct. In addition, it is possible to facilitate the work of fixing the skin of the seat cushion.

Further, according to the present invention, by arranging at least part of the duct between the cushion side frame and the cover member, the duct can be protected using the cover member.

Further, according to the present invention, the cover member is a cover that covers the connecting portion between the cushion side frame and the back side frame, so that the duct can be arranged through the connecting portion. can be suppressed from increasing in size.

Further, according to the present invention, by arranging the flexible portion of the duct between the cushion side frame and the cover member, the flexible portion of the duct can be protected by the cover member.

Further, according to the present invention, the size of the seat is prevented from increasing in the left-right direction by making the shape of the cross-section of the flow path of the portion of the duct located on the outer side in the left-right direction of the cushion side frame smaller in the left-right direction. can be suppressed.

Further, according to the present invention, the duct can be protected by arranging the duct so as to pass through the left-right direction outside of the cushion side frame arranged on the side opposite to the door.

Further, according to the present invention, by configuring the duct to pass between the front link and the rear link, it is possible to suppress interference between the duct and the front and rear links.

In addition, according to the present invention, the duct passes under the portion of the cushion pad positioned on the outer side in the left-right direction of the cushion side frame, thereby suppressing an increase in the size of the seat in the left-right direction. can.

Further, according to the present invention, the duct extends upward through the outer side of the backside frame above the connecting portion and connects to the seat back through the rear side of the backside frame. It is possible to more reliably prevent the legs of the passengers in the rear seats from hitting the duct.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the vehicle seat as a vehicle seat which concerns on embodiment. 1 is a cross-sectional view of a vehicle seat; FIG. It is a perspective view of a seat frame. 1 is a perspective view of a duct; FIG. FIG. 4 is a bottom view of the cushion frame, the blower and the duct; It is the perspective view which looked at the duct and the side frame cover from the left-right direction outer side. FIG. 4 is a rear view of the back frame, ducts and cover member; It is the perspective view which looked at the duct which concerns on a modification from the left-right direction outer side.

An embodiment of the invention will be described below with reference to the accompanying drawings. In this specification, the front, rear, left, right, and top and bottom are based on the front, back, left, right, and top and bottom as seen from the person sitting on the seat.
As shown in FIG. 1, the vehicle seat of this embodiment is configured as a vehicle seat S mounted in an automobile (vehicle) as a vehicle, and includes a seat cushion S1 and a seat back S2. A vehicle door DR is arranged on the left side of the vehicle seat S, which is one side in the left-right direction. The door DR is a door that opens and closes an entrance for getting on and off the vehicle seat S. As shown in FIG.

As shown in FIG. 2, the vehicle seat S is configured by covering a seat frame F (see FIG. 3) with a pad P made of urethane foam or the like and skins U1 and U2 made of cloth or leather. .

The pad P includes a cushion pad P1 forming the pad of the seat cushion S1 and a back pad P2 forming the pad of the seat back S2. The cushion pad P1 has an air passage A1 formed inside and a plurality of air holes H1 communicating with the air passage A1 from the upper surface. In addition, the back pad P2 has a ventilation path A2 formed inside and a plurality of ventilation holes H2 communicating with the ventilation path A2 from the front surface.

The ventilation paths A1 and A2 are connected to the blower device 70 through a duct D, which will be described later. The blower device 70 is a sirocco fan and is arranged below the pan frame 12 to be described later. The blower device 70 is attached to the pan frame 12 via a bracket 71 . The vehicle seat S is configured to blow air blown from the air blower 70 through the duct D and the air passages A1 and A2 from the air holes H1 and H2 toward the passenger sitting on the seat.

As shown in FIG. 3, the seat frame F includes a cushion frame F1 forming the frame of the seat cushion S1 and a back frame F2 forming the frame of the seat back S2. The seat cushion S1 is configured by covering the cushion frame F1 with the cushion pad P1 and the skin U1, and the seat back S2 is configured by covering the back frame F2 with the back pad P2 and the skin U2 (Fig. 1 reference).

The cushion frame F1 includes left and right cushion side frames 11, a pan frame 12, a rear pipe 13 as a rear frame, and a front pipe 14 (see FIG. 5). The left and right cushion side frames 11 are members that constitute the left and right frames of the seat cushion S1, and are spaced apart while facing each other in the left-right direction. The cushion side frame 11 is made of sheet metal and formed in an elongated shape elongated in the front-rear direction.

The pan frame 12 is made of sheet metal and connects front portions of the left and right cushion side frames 11 to each other. As shown in FIG. 5 , 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 connect the left and right cushion side frames 11 . Specifically, the rear pipe 13 connects the rear portions of the left and right cushion side frames 11 to each other, and the front pipe 14 connects the front portions of the left and right cushion side frames 11 to each other. The front pipe 14 is arranged below the pan frame 12 .

A support member 30 is arranged between the left and right cushion side frames 11 . 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 plurality of resin members 32 that connect the wire members 31 . The wire member 31 is made of a metal wire and extends forward and backward while alternately bending left and right. The wire members 31 are arranged side by side on the left and right and are provided in a state of being bridged between the pan frame 12 and the rear pipe 13 . The resin member 32 is made of resin and formed integrally with the wire member 31 by insert molding so as to partially cover the entire circumference of the wire member 31 .

As shown in FIG. 3 , the back frame F<b>2 includes left and right sheet metal frames 22 , pipe frames 23 , lower frames 24 and bridging frames 25 . The left and right sheet metal frames 22 are spaced apart while facing each other in the left-right direction. The sheet metal frame 22 is made of sheet metal, and is formed in a vertically elongated shape.

The pipe frame 23 is made of a metal pipe material, and has left and right upper side frames 23A that extend substantially vertically, and an upper frame 23B that connects the upper ends of the upper side frames 23A. The left and right upper side frames 23A are connected at their lower portions to the upper portions of the sheet metal frames 22, thereby forming, together with the left and right sheet metal frames 22, the left and right back side frames 21 that constitute the left and right frames of the seat back S2. there is The lower frame 24 is made of sheet metal and connects the lower portions of the left and right back side frames 21 to each other. The bridging frame 25 is made of sheet metal and connects the upper parts of the left and right back side frames 21 to each other. The bridging frame 25 has a lower extending portion 25A extending forward at its lower end, and vertically penetrating support holes 25B are formed at the left and right ends of the lower extending portion 25A. .

A pressure receiving member 50 and a wire member 60 are arranged between the left and right back side frames 21 . 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 arranged so as to face the back of the occupant. The pressure receiving member 50 has an opening 50A for passing the duct D therethrough. The wire member 60 is a member that connects the pressure receiving member 50 to the back frame F2. The wire member 60 is connected to the back frame F<b>2 by having its lower end fixed to the lower frame 24 and its upper end inserted into the support hole 25</b>B of the bridging frame 25 . The pressure receiving member 50 is connected to the back frame F2 via the wire member 60 by being fastened to the wire member 60 by a banding band or the like (not shown).

The rear portion of the cushion side frame 11 and the lower portion of the back side frame 21 are rotatably connected via a reclining mechanism RL. Accordingly, in the vehicle seat S, the seat back S2 can be rotated forward and backward with respect to the seat cushion S1.

In addition, the cushion frame F1 is supported by a pair of slide mechanisms SL that are spaced apart from each other in the left and right direction. The slide mechanism SL includes a lower rail SL1 and an upper rail SL2. The lower rail SL1 extends longitudinally and is fixed to the floor of the vehicle. Further, the upper rail SL2 engages with the lower rail SL1 so as to be slidable forward and backward. The cushion frame F1 is fixed to the upper rail SL2 via a front link L1 and a rear link L2 (see FIG. 6) which will be described later. Accordingly, the vehicle seat S is slidable forward and backward with respect to the floor of the vehicle.

As shown in FIG. 6, the front link L1 and the rear link L2 are provided in pairs on each side. The front link L1 has an upper portion rotatably coupled to the front portion of the cushion side frame 11 and a lower portion rotatably coupled to the front portion of the upper rail SL2. The rear link L2 has an upper portion rotatably coupled to the rear portion of the cushion side frame 11, and a lower portion rotatably coupled to the rear portion of the upper rail SL2. The front link L1 and the rear link L2 form a four-bar link together with the cushion side frame 11 and the upper rail SL2 as a link support member. The height of the vehicle seat S can be changed by rotating the front link L1 or the rear link L2 with respect to the cushion side frame 11 by an electric or manual actuator (not shown).

As shown in FIG. 2, the duct D is a member that connects the ventilation paths A1 and A2 formed in the pads P (P1 and P2) of the seat cushion S1 and seat back S2 and the blower device . As shown in FIG. 4, the duct D includes a first lower pipe portion 111, a second lower pipe portion 112, a first side pipe portion 121, a second side pipe portion 122, and a first bellows as a flexible portion. It has a portion 123 , a third side pipe portion 124 , a first rear pipe portion 131 , a second rear pipe portion 132 , a back connection pipe portion 133 , a second bellows portion 141 , and a cushion connection pipe portion 142 . is doing.

The first lower pipe portion 111 is a portion that extends substantially forward and backward, and the front end thereof is connected to the blower device 70 (see FIG. 2). The second lower pipe portion 112 is a portion extending from the rear end of the first lower pipe portion 111 to the left-right direction outer side (right side) of the seat cushion S1. The first side pipe portion 121 is a portion extending substantially upward from the right end of the second lower pipe portion 112, and the second side pipe portion 122 is a portion extending obliquely rearward and upward from the upper end of the first side pipe portion 121. . The first bellows portion 123 is a portion that is provided behind the second side pipe portion 122 and extends substantially back and forth. The first bellows portion 123 is flexible and stretchable. The third side pipe portion 124 is a portion extending substantially rearward from the rear end of the first bellows portion 123 .

The first rear pipe portion 131 extends from the rear end of the third side pipe portion 124 inward in the left-right direction (left side) of the seat cushion S1. It is a portion that extends substantially upward from the . The back connecting pipe portion 133 is a portion extending substantially forward from the upper end of the second rear pipe portion 132, and the front end thereof is connected to the air passage A2 formed in the back pad P2 (see FIG. 2). The second bellows portion 141 is provided to extend substantially upward from the upper surface of the first lower pipe portion 111 . The second bellows portion 141 is flexible and stretchable. The cushion connecting pipe portion 142 is a portion that is provided on the second bellows portion 141 and extends substantially vertically, and is connected to the air passage A1 formed in the cushion pad P1 (see FIG. 2).

As shown in FIG. 2, the duct D is arranged across the seat cushion S1 and the seat back S2. Specifically, the duct D is arranged so as to extend from the lower side of the seat cushion S1 toward the seat back S2 through the laterally outer side of the cushion frame F1 (cushion side frame 11).

As shown in FIG. 5, in the duct D, the first lower pipe portion 111 and the second lower pipe portion 112 are positioned below the support member 30 and to the right of the center (central plane CP) of the seat cushion S1 in the left-right direction. are placed in The first lower pipe portion 111 has a front end connected to the blower device 70 arranged below the pan frame 12 and extends substantially rearward. The second lower pipe portion 112 extends from the rear end of the first lower pipe portion 111 while bending outward in the left-right direction of the seat cushion S1. As shown in FIG. 6, the second lower pipe portion 112 extends from the inner side to the outer side in the left-right direction of the cushion side frame 11 through the lower side of the cushion side frame 11 disposed on the right side, which is the other side in the left-right direction. extended. The second lower pipe portion 112 of the duct D passes between the cushion side frame 11 and the upper rail SL2 in the vertical direction and between the front link L1 and the rear link L2 in the longitudinal direction.

In the duct D, the first side pipe portion 121 extends substantially upward from the right end of the second lower pipe portion 112, and the second side pipe portion 122 extends from the upper end of the first side pipe portion 121 to the outside of the cushion side frame 11 in the left-right direction. It extends rearward and obliquely upward along the surface. The second side pipe portion 122 is arranged so as to overlap the cushion side frame 11 when viewed in the left-right direction. More specifically, the second side tube portion 122 is a portion of the cushion pad P1 located on the outer side in the left-right direction of the cushion side frame 11, specifically, an end that covers the upper portion of the outer surface of the cushion side frame 11 in the left-right direction. It is arranged so as to pass under the portion P11.

The first bellows portion 123 extends from the rear end of the second side pipe portion 122 to the rear end portion of the cushion side frame 11, more specifically, the connection portion between the rear portion of the cushion side frame 11 and the lower portion of the back side frame 21 in the left-right direction. It extends diagonally upward through the outside. Also, the third side pipe portion 124 extends substantially rearward from the rear end of the first bellows portion 123 , and the rear end extends to the rear of the cushion side frame 11 .

The cross-sectional shape of the side pipe portions 121 and 122, which are the portions of the duct D located on the laterally outer side of the cushion side frame 11, is smaller in the lateral direction than in the direction orthogonal to the lateral direction. there is Specifically, as shown in FIG. 4 , the cross-sectional shape of the flow path of the first side pipe portion 121 is such that the left-right dimension D11 is smaller than the front-rear dimension D12. The cross-sectional shape of the road has a horizontal dimension D13 smaller than a vertical dimension D14. In other words, both the first side pipe portion 121 and the second side pipe portion 122 have laterally flattened cross-sectional shapes.

As shown in FIG. 7, the duct D has a first rear pipe portion 131 that extends from the rear end of the third side pipe portion 124 while bending inward in the left-right direction of the seat cushion S1 while passing behind the lower frame 24. It extends substantially obliquely upward toward the central plane CP, and the second rear pipe portion 132 extends substantially upward on the central plane CP. In the duct D, the back connecting pipe portion 133 extends substantially forward and is connected to the air passage A2 formed in the back pad P2 through the opening 50A of the pressure receiving member 50 (see FIG. 2).

In this embodiment, the duct D is configured such that the side pipe portions 121 and 122 pass through the laterally outer side of the cushion side frame 11, which is arranged on the right side opposite to the left side where the door DR (see FIG. 1) is arranged, and passes through the seat. It is arranged so as to face the seat back S2 from the cushion S1.

The vehicle seat S includes a cover member CV. The cover member CV includes a rear cover 80 and side frame covers 90. As shown in FIG.
The rear cover 80 is formed of resin or the like in a plate shape elongated in the left and right direction, and is arranged behind the second rear pipe portion 132 and the back connection pipe portion 133 . The left and right ends of the rear cover 80 are fixed to the left and right rear ends of the left and right back side frames 21 extending inwardly by bolting or the like. Thereby, the rear cover 80 is attached so as to span the left and right back side frames 21 . By providing such a rear cover 80, the rear cover 80 can protect the portion where the duct D and the back pad P2 are connected.

As shown in FIGS. 6 and 7, the side frame cover 90 connects the rear end portion of the right cushion side frame 11, specifically, the rear portion of the right cushion side frame 11 and the lower portion of the back side frame 21. It is a cover that covers the part. More specifically, the side frame cover 90 covers the connecting portion between the cushion side frame 11 and the back side frame 21 and the reclining mechanism RL provided at the connecting portion. The side frame cover 90 is made of resin and has a substantially cup-like shape with an open inner side and a front side in the left-right direction.

The side frame cover 90 covers the first bellows portion 123 passing through the laterally outer side of the connecting portion between the cushion side frame 11 and the back side frame 21 from the laterally outer side. In other words, the first bellows portion 123 that is part of the duct D is arranged between the right cushion side frame 11 and the side frame cover 90 in the left-right direction. The side frame cover 90 is provided with an opening 90A through which the duct D is passed.

As shown in FIG. 2, the skin U1 of the seat cushion S1 covering the cushion frame F1 and the cushion pad P1 is attached to the rear pipe 13 constituting the cushion frame F1 by hooking a hook U11 provided at the end of the skin U1. 13 is fixed.

According to the present embodiment described above, the duct D is arranged so as to pass from the seat cushion S1 toward the seat back S2 through the left-right direction outer side of the cushion side frame 11. Therefore, for example, the rear side of the rear pipe 13 It is possible to prevent the feet of the rear seat occupant from hitting the duct D, as compared with the structure in which the rear seat occupant faces the seat back S2. Further, since the duct D does not pass through the rear pipe 13, the duct D does not become an obstacle when the hook U11 provided on the skin U1 of the seat cushion S1 is fixed to the rear pipe 13. Fixing work can be facilitated.

Further, since a part of the duct D is arranged between the right cushion side frame 11 and the side frame cover 90, the duct D can be protected using the side frame cover 90 covering the cushion side frame 11. . Furthermore, since the first bellows portion 123 is arranged between the cushion side frame 11 and the side frame cover 90 as a part of the duct D, the side frame cover 90 protects the soft first bellows portion 123 of the duct D. can do.

Further, since the side frame cover 90 is a cover that covers the connecting portion between the cushion side frame 11 and the back side frame 21, the duct D is protected by the side frame cover 90 while the duct D is separated from the cushion side frame 11 and the back side frame. 21 can be arranged so as to extend from the seat cushion S1 toward the seat back S2 through the left-right direction outside of the connecting portion. As a result, the duct D can be arranged more compactly than the case where the duct is arranged so as to avoid the connecting portion on the left-right direction outside of the cushion side frame 11, and the size of the vehicle seat S can be prevented from increasing. can be suppressed.

The cross-sectional shape of the side pipe portions 121 and 122 of the duct D located on the left-right direction outer side of the cushion side frame 11 has dimensions D11 and D13 in the left-right direction and dimensions D12 and D14 in the direction orthogonal to the left-right direction. , the side tube portions 121 and 122 can be thinned laterally. As a result, the duct D can be compactly arranged in the left-right direction on the outer side of the cushion side frame 11, so that the vehicle seat S can be prevented from being enlarged in the left-right direction.

In addition, since the side pipe portions 121 and 122 of the duct D are arranged opposite to the door DR in the left-right direction, it is possible to prevent the occupant's feet from hitting the duct D when the occupant gets into the vehicle. , duct D can be protected.

Further, since the second lower pipe portion 112 of the duct D passes between the front link L1 and the rear link L2, the duct D passes from the left-right direction outer side of the cushion side frame 11 through the lower side of the cushion side frame 11 and under the seat cushion S1. When arranging so as to face the duct D, interference between the duct D and the front and rear links L1, L2 can be suppressed.

In addition, since the second side pipe portion 122 of the duct D passes under the end portion P11 of the cushion pad P1, the duct D can be brought closer to the cushion side frame 11 than when it passes through the laterally outer side of the cushion pad P1. It can be arranged compactly in the horizontal direction. As a result, it is possible to prevent the vehicle seat S from increasing in size in the left-right direction.

Although one embodiment of the invention has been described above, the invention is not limited to the embodiment. The specific configuration can be changed as appropriate without departing from the spirit of the invention as described below. In the following description, the same reference numerals are given to the same configurations as in the above embodiment, and the description thereof will be omitted as appropriate, and the points different from the above embodiment will be described in detail.

For example, in the modification shown in FIG. 8, the duct D has a fourth side pipe portion 125 between the first bellows portion 123 and the third side pipe portion 124 . The fourth side pipe portion 125 is a portion extending substantially upward from the rear end of the first bellows portion 123 . The third side pipe portion 124 extends substantially rearward from the upper end of the fourth side pipe portion 125 . The duct D of the modified example shown in FIG. It is arranged to extend upward through the direction outside. The upper end portion of the duct D, specifically, the first rear pipe portion 131 extending from the rear end of the third side pipe portion 124 passes through the rear side of the back side frame 21 and extends inward in the left-right direction. , and the back connecting pipe portion 133 is connected to an air passage formed in a back pad (not shown) of the seat back S2.

According to such a configuration, the duct D passes through the rear side of the back side frame 21 from the vicinity of the connecting portion between the cushion side frame 11 and the back side frame 21 and connects to the seat back S2. , the first rear pipe portion 131 and the second rear pipe portion 132, which are portions passing through the rear side of the back side frame 21, can be arranged at higher positions. As a result, it is possible to more reliably prevent the feet of the passengers in the rear seats from hitting the duct D.

Further, the duct D may be configured to have a symmetrical shape with respect to the configuration described in the above embodiment. In this case, the duct D can be configured to be arranged so as to pass through the left cushion side frame 11 on the left-right direction outside and go from the seat cushion S1 toward the seat back S2. In the above-described embodiment, the duct D has the first bellows portion 123 as the flexible portion, but the invention is not limited to this, and the configuration of the flexible portion is not particularly limited as long as it has flexibility. do not have. Also, the duct D may be configured by connecting a plurality of parts.

In the above-described embodiment, the side frame cover 90 that constitutes the cover member CV connects the cushion side frame 11 and the back side frame 21, in other words, the rear end portion that is a part of the cushion side frame 11 to the left and right. Although it is configured to cover from the outside in the direction, it is not limited to this. For example, the cover member may be configured to cover a portion on the front side of the connecting portion from the left-right direction outside, instead of the connecting portion between the cushion side frame and the back side frame. Further, the cover member may be configured to cover the entire cushion side frame from the outside in the left-right direction. In the configuration in which the cover member covers the entire cushion side frame, the duct is arranged between the cushion side frame and the cover member to cover the entire portion of the duct that is arranged laterally outside the cushion side frame. Since it can be protected by the member, the duct may be arranged so as to pass through the laterally outer side of the cushion side frame on the door side. Further, even if the vehicle seat is configured to include a cover member, the duct does not pass between the cushion side frame and the cover member (inside the cover member), but avoids the cover member and passes outside the cover member. may be arranged as follows.

Further, in the above-described embodiment, the sirocco fan was exemplified as the air blower 70, but the present invention is not limited to this, and may be a propeller fan, a turbo fan, or the like. Further, in the above-described embodiment, the vehicle seat S is configured to blow air from the ventilation holes H1 and H2, but is not limited to this. good. Further, the blower may switch between blowing and sucking by, for example, switching the rotation direction of the impeller. Further, in the above-described embodiment, the vehicle seat S includes the air blower 70, but the vehicle seat itself may be configured without the air blower. In other words, the blower device may be provided in the vehicle body of the vehicle 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 suction port provided in the vehicle body.

Further, in the above-described embodiment, the air passage connected to the blower device by the duct D is formed in both the seat cushion and the seat back. It may be a configuration formed in

In the above-described embodiment, the vehicle seat S mounted in an automobile was exemplified as a vehicle seat. may be

Also, the elements described in the above-described embodiment and modification may be arbitrarily combined and implemented.

11 Cushion Side Frame 13 Rear Pipe 21 Back Side Frame 70 Air Blower 90 Side Frame Cover 121 First Side Pipe Part 122 Second Side Pipe Part 123 First Accordion Part A1 Ventilation Path A2 Ventilation Path CV Cover Member D Duct DR Door F1 Cushion Frame L1 Front link L2 Rear link P1 Cushion pad P11 End S Vehicle seat S1 Seat cushion S2 Seat back SL2 Upper rail

Claims (7)

A vehicle seat comprising a seat cushion and a seat back,
left and right cushion side frames forming left and right frames of the seat cushion;
left and right back side frames forming left and right frames of the seat back;
a duct disposed across the seat cushion and the seat back and connecting an air passage formed in at least one of the seat cushion and the seat back to an air blower;
a cover member that covers a connecting portion between the rear portion of the cushion side frame and the lower portion of the back side frame from the outside in the left-right direction;
The duct is disposed so as to pass from the seat cushion to the seat back through the left-right direction outer side of the cushion side frame and the left-right direction outer side of the connecting portion ,
A vehicle seat, wherein a portion of the duct is arranged between the connecting portion and the cover member. 2. The vehicle seat according to claim 1, wherein said duct has a flexible portion, said flexible portion being disposed between said cushion side frame and said cover member. 2. The cross-sectional shape of the flow path of the portion of the duct located on the left-right direction outer side of the cushion side frame is characterized in that the size in the left-right direction is smaller than the size in the direction orthogonal to the left-right direction. Item 3. The vehicle seat according to item 2. The vehicle seat has a vehicle door arranged on one side in the left-right direction,
3. The duct is disposed so as to extend from the seat cushion toward the seat back through the laterally outer side of the cushion side frame disposed on the other side in the lateral direction. The vehicle seat according to any one of . a front link rotatably coupled to the front portion of the cushion side frame;
a rear link rotatably coupled to the rear portion of the cushion side frame;
a link support member to which a lower portion of the front link is rotatably coupled and a lower portion of the rear link is rotatably coupled;
The vehicle seat according to any one of claims 1 to 4, wherein the duct passes between the front link and the rear link. The seat cushion is a cushion frame that constitutes a frame of the seat cushion, and includes a cushion frame that includes the left and right cushion side frames and a cushion pad that covers the cushion frame,
6. The vehicle seat according to any one of claims 1 to 5, wherein the duct passes under a portion of the cushion pad positioned laterally outwardly of the cushion side frame. The duct extends upward through the laterally outer side of the back side frame above a connecting portion between a rear portion of the cushion side frame and a lower portion of the back side frame, and an upper end portion of the duct extends upwardly from the back side frame. 7. The vehicle seat according to any one of claims 1 to 6, wherein the vehicle seat is connected to an air passage formed in the seat back through the rear side of the seat back.

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