JP2019026255A - Vehicular seat - Google Patents

Abstract

To provide a vehicular seat which can prevent legs of a passenger in a rear seat from abutting on a duct.SOLUTION: A vehicular seat (a vehicle seat S) comprises: a seat cushion S1 and a seat back S2; right and left cushion side frames constructing right and left frames of the seat cushion S1; a rear pipe 13 coupling together both rear parts of the right and left cushion side frames; and a duct D extended across the seat cushion S1 and the seat back S2 so as to connect ventilation passages A1 and A2 formed in the seat cushion S1 and the seat back S2 with an air blower 70. The duct D is arranged such that a vertically extended portion (adjacent to a first connection part C1) is directed from the seat cushion S1 toward the seat back S2 by passing a front side of the rear pipe 13.SELECTED DRAWING: Figure 2

Description

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

  Conventionally, a seat cushion and a seat back formed with an air outlet and an air passage, a 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, A vehicle seat configured to send conditioned air to an outlet through an air passage or a duct is known (Patent Document 1).

JP 2009-023477 A

  By the way, in the prior art, since the duct extends from the rear end of the seat cushion and faces the seat back, there is a possibility that the passenger's foot in the rear seat may hit the duct.

Then, an object of this invention is to provide the vehicle seat which can suppress that the passenger | crew's foot | leg of a backseat hits a duct.
Another object of the present invention is to facilitate the work of fixing the skin of the seat cushion.
Moreover, it aims at suppressing that a sheet | seat enlarges.
Moreover, it aims at improving the rigidity of a duct.
Moreover, it aims at suppressing interference with a duct and another member.
Another object of the present invention is to realize a configuration in which air is blown out or sucked in a wide range of seat cushions or seat backs.
Moreover, it aims at suppressing that unnecessary force acts on a duct.
Moreover, it aims at making a duct follow a reclining operation | movement favorably.
Moreover, it aims at improving the appearance of the sheet | seat provided with a duct.
Moreover, it aims at fastening the edge part of a skin member, suppressing interference with a duct and a skin member.

  The present invention for achieving the above-described object is a vehicle seat including a seat cushion and a seat back, and includes left and right cushion side frames constituting left and right frames of the seat cushion, and the left and right cushion side frames. A rear frame that connects the rear parts, a duct that is disposed across the seat cushion and the seat back, and that connects the ventilation path formed in at least one of the seat cushion and the seat back to the blower; The duct is arranged such that a portion extending vertically extends from the seat cushion toward the seat back through the front side of the rear frame.

  According to such a structure, it can suppress that a passenger | crew's foot | leg of a backseat hits the part extended up and down of a duct by a rear frame. Further, since the duct does not pass through the rear side of the rear frame, in the configuration in which the skin of the seat cushion is fixed to the rear frame, the duct does not get in the way, so that the work of fixing the skin to the rear frame can be facilitated.

  The vehicle seat described above includes left and right back side frames constituting left and right frames of the seat back, and a lower frame connecting lower portions of the left and right back side frames, and the duct extends vertically. It can be set as the structure arrange | positioned so that a part may go to the said seat back from the said seat cushion through the front side of the said lower frame.

  According to this, it can suppress that a passenger | crew's foot | leg of a backseat hits the part extended up and down of a duct with a lower frame.

  In the vehicle seat described above, the duct may have a flexible portion having flexibility, and the flexible portion may be positioned above the rear frame.

  According to this, it can suppress that a passenger | crew's foot | leg of a backseat hits the soft flexible part of a duct with a rear frame.

  In the vehicle seat described above, the duct has a flexible portion having flexibility, and the flexible portion is formed between the rear frame and the lower frame in a direction connecting the rear frame and the lower frame with the shortest distance. It can be set as the structure located in between.

  According to this, it can suppress that the leg of the passenger | crew of a backseat hits the soft flexible part of a duct by a rear part frame or a lower frame.

  In the vehicle seat described above, the duct is configured such that the vertically extending portion connects the first component and the second component, and the connecting portion between the first component and the second component is the front-rear direction. It can be configured to overlap with the rear frame as viewed from above.

  According to this, it can suppress that the leg of the passenger | crew of a backseat hits the connection part of the 1st component of a duct, and a 2nd component by a rear frame.

  In the vehicle seat described above, the duct is configured such that the vertically extending portion connects the third component and the fourth component, and the connecting portion between the third component and the fourth component is the front-rear direction. It can be configured to overlap the lower frame when viewed from the side.

  According to this, it can suppress that a passenger | crew's foot | leg of a backseat hits the connection part of the 3rd component of a duct, and a 4th component by a lower frame.

  In the vehicle seat described above, the shape of the channel cross section of the portion of the duct located on the front side of the rear frame can be configured such that the dimension in the front-rear direction is smaller than the dimension in the direction perpendicular to the front-rear direction. .

  According to this, since the duct can be disposed compactly in the front-rear direction on the front side of the rear frame, it is possible to suppress an increase in the size of the seat in the front-rear direction.

  In the vehicle seat described above, the shape of the channel cross section of the portion of the duct located on the front side of the lower frame may be configured such that the dimension in the front-rear direction is smaller than the dimension in the direction perpendicular to the front-rear direction. .

  According to this, since the duct can be disposed compactly in the front-rear direction on the front side of the lower frame, it is possible to prevent the seat from being enlarged in the front-rear direction.

  In the vehicle seat described above, the duct may be configured to be bent in a U-shape that is convex behind the rear frame when viewed from the left-right direction.

  According to this, the rigidity of the duct can be improved. Moreover, interference with a duct and the other member arrange | positioned under the rear part frame can be suppressed.

  In the vehicle seat described above, one of the seat cushion and the seat back has a first air passage and a second air passage, and the duct has a first duct portion connected to the first air passage, The second duct portion may be extended from the first duct portion and connected to the second air passage.

  According to this, since the air blower and the plurality of ventilation paths can be connected by the duct, it is possible to realize a configuration for blowing out air or a configuration for sucking air over a wide range of seat cushions and seat backs.

  The vehicle seat described above may include a pad member that covers the seat cushion or the frame of the seat back, and the pad member may have a recess in which a portion extending up and down of the duct is disposed.

  According to this, since interference between the duct and the pad member can be suppressed, it is possible to suppress unnecessary force from acting on the duct from the pad member. Moreover, since a duct can be arrange | positioned compactly, it can suppress that a sheet | seat enlarges.

  The vehicle seat includes a cushion pad that covers a frame of the seat cushion, and a back pad that covers a frame of the seat back, and the seat back is configured to be reclining with respect to the seat cushion, The portion extending vertically of the duct has a flexible portion having flexibility, and the flexible portion is at least partially located between the cushion pad and the back pad, and the seat back is located with respect to the seat cushion. It is possible to adopt a configuration in which the seat is in an upright seated state and is curved in an arc shape that protrudes backward.

  According to this, the duct can be made to follow the reclining operation of the seat back satisfactorily.

  In the vehicle seat described above, the seat back is configured to be reclining with respect to the seat cushion, and the vehicle seat covers a portion of the duct that spans the seat cushion and the seat back. It can be set as the structure provided with a member.

  According to this, since the duct is covered with the cover member and is not directly exposed from between the seat cushion and the seat back, the appearance of the seat including the duct can be improved.

  The vehicle seat described above includes a frame member that constitutes a frame of the seat cushion or the seat back, a pad member that covers the frame member, and a skin member that covers the pad member. When viewed from the direction, it extends from the occupant side of the seat cushion or the seat back toward the side opposite to the occupant side, and is fastened to the engaged portion on the side opposite to the occupant side of the seat cushion or the seat back. A first tongue that extends from one side of the seat cushion or the seat back toward the opposite side of the occupant side through one side of the duct in the left-right direction; And a second tongue extending from the occupant side of the seat cushion or the seat back toward the side opposite to the occupant side through the other side in the left-right direction of the duct A first engaging portion that is provided on the first tongue and engages with the engaged portion; and an end on the other side of the first tongue that is provided on the second tongue. And a second engagement portion that engages with the engaged portion.

  According to this, the first end of the skin member can be fastened to the engaged portion while suppressing interference between the duct and the skin member.

  According to the present invention, the rear frame can prevent the occupant's foot in the rear seat from hitting a portion extending up and down the duct. Moreover, the operation | work which fixes the skin of a seat cushion to a rear part frame can be made easy.

  Further, by arranging the duct so that the vertically extending portion passes through the front side of the lower frame, the lower frame can prevent the foot of the passenger in the rear seat from hitting the vertically extending portion of the duct.

  Further, by adopting a configuration in which the flexible portion of the duct is positioned above the rear frame, it is possible to suppress the foot of the passenger in the rear seat from hitting the flexible portion of the duct by the rear frame.

  Further, by adopting a configuration in which the flexible portion of the duct is positioned between the rear frame and the lower frame, it is possible to prevent the rear passenger's foot from hitting the flexible portion of the duct by the rear frame or the lower frame.

  Further, the connecting portion between the first part and the second part of the duct overlaps with the rear frame when viewed from the front-rear direction, so that the occupant's foot in the rear seat is connected to the first part of the duct by the rear frame. It can suppress hitting | connecting a connection part with a 2nd component.

  In addition, the connection part between the third part and the fourth part of the duct overlaps with the lower frame when viewed from the front-rear direction, so that the foot of the passenger in the rear seat is connected to the third part of the duct by the lower frame. It is possible to suppress hitting the connecting portion with the fourth component.

  Moreover, it can suppress that a sheet | seat enlarges in the front-back direction by making the shape of the flow-path cross section of the part located in the front side of the rear frame of a duct into the structure where the dimension of the front-back direction is small.

  Moreover, it can suppress that a sheet | seat enlarges in the front-back direction by making the shape of the flow-path cross section of the part located in the front side of the lower frame of a duct into the structure where the dimension of the front-back direction is small.

  Moreover, the rigidity of a duct can be improved by setting it as the structure which curves a duct in the U-shape which becomes a back convex under the rear part frame. Moreover, interference with a duct and another member can be suppressed.

  In addition, the seat cushion or the seat back has a configuration in which one of the seat cushion and the seat back has the first air passage and the second air passage, and the duct has the first duct portion and the second duct portion. It is possible to realize a configuration in which air is blown out or sucked in a wide range.

  Moreover, it can suppress that unnecessary force acts on a duct by setting it as the structure which has a recessed part by which the pad member is arrange | positioned at the part extended up and down of a duct. Moreover, it can suppress that a sheet | seat enlarges.

  In addition, by adopting a configuration in which the reclining seat back is seated and the flexible portion of the duct is curved in an arc shape protruding backward, the duct can be made to follow the reclining operation of the seat back satisfactorily.

  Moreover, the appearance of the seat provided with the duct can be improved by covering the portion of the duct extending over the seat cushion and the seat back with the cover member.

  The first end portion of the skin member has a first tongue portion, a second tongue portion, a first engagement portion, and a second engagement portion, so that the duct and the skin member The first end portion of the skin member can be fastened to the engaged portion while suppressing interference.

It is a figure which shows the vehicle seat as a vehicle seat which concerns on 1st Embodiment. It is sectional drawing of the vehicle seat. It is a perspective view of a seat frame. It is a perspective view of a duct. It is sectional drawing (a), (b) of the connection part vicinity of a duct. It is the figure which looked at the cushion frame, the air blower, and the duct from the bottom. It is an expanded sectional view of the rear part of a vehicular seat. It is the figure which looked at the back frame and the duct from back. It is a perspective view which shows the structure of the seat back of the vehicle seat as a vehicle seat which concerns on 2nd Embodiment. They are a perspective view (a) of a duct and a cover member, a sectional view (b) of the 1st connection part, and a sectional view (c) of the 2nd connection part. It is the figure which looked at the vehicle seat from the bottom. It is the figure which looked at the vehicle seat from the back. It is an expanded sectional view of the rear part of a vehicular seat. It is the figure which looked at the cushion pad from the top. It is the figure which looked at the back pad from back. It is a perspective view which shows the structure of the edge part of the skin of a seat back. It is a perspective view which shows the state which the 2nd engagement member provided in the 2nd tongue part of the epidermis engaged with the 1st tongue part. It is sectional drawing (a) equivalent to the XX cross section of FIG. 17 in the state in which the 1st edge part and 2nd edge part of the epidermis were fastened, and sectional drawing (b) equivalent to a YY cross section. It is a perspective view which shows the state by which the 3rd tongue part of the epidermis was fastened by the wire frame. It is the figure which looked at the duct which concerns on a 1st modification from the back. It is the figure which looked at the duct which concerns on a 2nd modification from the back.

Hereinafter, a first embodiment will be described with reference to the accompanying drawings. In this specification, front and rear, left and right, and top and bottom are based on front and rear, left and right, and top and bottom as viewed from the person sitting on the seat.
As shown in FIG. 1, the vehicle seat of 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 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 fabric or leather. .

  The pad P includes a cushion pad P1 constituting the pad of the seat cushion S1 and a back pad P2 constituting the pad of the seat back S2. The cushion pad P1 has a ventilation path A1 formed therein and a plurality of ventilation holes H1 communicating with the ventilation path A1 from the upper surface. Further, the back pad P2 has a ventilation path A2 formed therein 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 70 by a duct D described later. The air blower 70 is a sirocco fan, and is disposed below the pan frame 12 described later. The blower 70 is attached to the pan frame 12 via a bracket 71. The vehicle seat S is configured to blow the air blown from the 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 constituting a frame of the seat cushion S1 and a back frame F2 constituting a 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. 6). The left and right cushion side frames 11 are members constituting the left and right frames of the seat cushion S1, and are spaced apart in a state of facing in the left-right direction. The cushion side frame 11 is made of a sheet metal and is formed in a long and long shape in the front-rear direction.

  The pan frame 12 is made of sheet metal, and connects the front portions of the left and right cushion side frames 11. As shown in FIG. 6, the rear pipe 13 and the front pipe 14 are made of a metal pipe material, and are spaced apart from each other in the front-rear direction to 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, and the front pipe 14 connects the front portions of the left and right cushion side frames 11. The front pipe 14 is disposed below the pan frame 12.

  A support member 30 is disposed 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 includes 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 back and forth while alternately bending left and right. The wire members 31 are arranged in a state where they are arranged side by side, and are provided in a state of being spanned between the pan frame 12 and the rear pipe 13. The resin member 32 is made of resin, and is formed integrally with the wire member 31 in a state where the entire circumference of a part of the wire member 31 is covered by insert molding.

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

  The pipe frame 23 is made of a metal pipe material, and includes left and right upper side frames 23A that extend substantially vertically and an upper frame 23B that connects upper ends of the upper side frames 23A. The left and right upper side frames 23A are connected to the upper part of the sheet metal frame 22 so that the left and right sheet metal frames 22 and the left and right back side frames 21 constituting the left and right frames of the seat back S2 are formed. Yes. The lower frame 24 is made of sheet metal, and connects the lower portions of the left and right back side frames 21. The bridging frame 25 is made of sheet metal and connects the upper portions of the left and right backside frames 21.

  The rear part of the cushion side frame 11 and the lower part of the back side frame 21 are rotatably connected via a reclining mechanism RL. Thus, the vehicle seat S is configured such that the seat back S2 can be rotated back and forth with respect to the seat cushion S1.

  As shown in FIG. 2, the duct D is a member that connects the air passages A1 and A2 formed in the pads P (P1 and P2) of the seat cushion S1 and the seat back S2 and the blower 70. The duct D is formed by connecting a plurality of components. Specifically, as shown in FIG. 4, the duct D includes a first duct member 110 as a first part, a second duct member 120 as a second part and a third part, and a fourth part. A third duct member 130 and a fourth duct member 140 are provided as parts.

  The first duct member 110 includes a lower pipe portion 111 that extends substantially front and rear, a curved pipe portion 112 that extends upward from the rear end of the lower pipe portion 111 while being curved, and an upper end of the curved pipe portion 112. And a first connecting pipe portion 113 extending substantially upward. The lower pipe part 111 has a front end connected to the blower 70 (see FIG. 2).

  The 2nd duct member 120 is connected to the rear part of the 1st duct member 110, and is provided so that it may extend substantially up and down. The second duct member 120 includes a second connecting pipe part 121, a first bellows part 122 as a flexible part provided on the second connecting pipe part 121, and a first bellows part 122 provided on the first bellows part 122. 3 connecting pipe parts 123. The second connecting pipe part 121 is formed in a size such that the first connecting pipe part 113 of the first duct member 110 fits inside. The first bellows portion 122 has flexibility and can be expanded and contracted.

  The third duct member 130 is connected to the upper end of the second duct member 120. The third duct member 130 has a fourth connecting pipe portion 131 that extends substantially vertically and a second connecting pipe portion 131 that extends obliquely upward and leftward from the upper end of the fourth connecting pipe portion 131 (obliquely upward toward the center of the vehicle seat S in the left-right direction). 1 upper pipe part 132, a second upper pipe part 133 extending from the upper end of the first upper pipe part 132 to the left (the center of the vehicle seat S in the left-right direction), and substantially forward from the second upper pipe part 133 And a back connecting pipe portion 134 that extends. The fourth connecting pipe part 131 is formed in a size that fits inside the third connecting pipe part 123 of the second duct member 120. The back connection pipe part 134 is connected to a ventilation path A2 formed in the back pad P2 at the front end (see FIG. 2).

  The fourth duct member 140 is connected to the front portion of the first duct member 110 and is provided so as to extend substantially vertically. The fourth duct member 140 includes a second bellows portion 141, a cushion connection pipe portion 142 provided on the second bellows portion 141, and left and right connection wall portions 143 provided below the second bellows portion 141. have. The second bellows portion 141 has flexibility and can be expanded and contracted. The cushion connection pipe portion 142 is connected to a ventilation path A1 formed in the cushion pad P1 (see FIG. 2). The connecting wall portion 143 extends downward from the lower end of the second bellows portion 141 and is provided so as to sandwich the lower pipe portion 111 of the first duct member 110 from the left and right.

  As shown in FIG. 5A, the first duct member 110 has a first engagement portion 151 and a second engagement portion 152 provided in the first connection portion C1, and the second duct member 120. Has a third engagement portion 153 and a fourth engagement portion 154 provided in the first connection portion C1. The first connection portion C <b> 1 is a connection portion between the first duct member 110 and the second duct member 120. Specifically, the first connection portion C1 is a portion where the first connection pipe portion 113 of the first duct member 110 and the second connection pipe portion 121 of the second duct member 120 are connected and overlapped. The first connection part C1 extends substantially vertically. In other words, the duct D includes a first connection portion C1 at a portion extending substantially vertically.

  The first engaging portion 151 and the second engaging portion 152 are convex portions that protrude outward in the left-right direction from the left and right side surfaces of the first connecting pipe portion 113. The third engaging portion 153 and the fourth engaging portion 154 are substantially rectangular holes penetrating to the left and right to engage with the engaging portions 151 and 152 as convex portions, and the left and right side walls of the second connecting pipe portion 121. Is provided. The third engagement portion 153 engages with the first engagement portion 151, and the fourth engagement portion 154 engages with the second engagement portion 152.

  The third duct member 130 has a fifth engagement portion 161 and a sixth engagement portion 162 provided in the second connection portion C2, and the second duct member 120 is connected to the second connection portion C2. It has the 7th engaging part 163 and the 8th engaging part 164 which were provided. The second connection portion C <b> 2 is a connection portion between the second duct member 120 and the third duct member 130. Specifically, the second connection portion C2 is a portion where the third connection pipe portion 123 of the second duct member 120 and the fourth connection pipe portion 131 of the third duct member 130 are connected and overlapped. The second connection part C2 extends substantially vertically. In other words, the duct D includes a second connection portion C2 at a portion extending substantially vertically.

  The fifth engagement portion 161 and the sixth engagement portion 162 are convex portions that protrude outward in the left-right direction from the left and right side surfaces of the fourth connection pipe portion 131. The seventh engaging portion 163 and the eighth engaging portion 164 are substantially rectangular holes penetrating left and right where the engaging portions 161 and 162 are engaged, and are provided on the left and right side walls of the third connecting pipe portion 123. Yes. The seventh engagement portion 163 engages with the fifth engagement portion 161, and the eighth engagement portion 164 engages with the sixth engagement portion 162.

  Further, as shown in FIG. 5B, the first duct member 110 has a ninth engaging portion 171 and a tenth engaging portion 172 provided in the lower pipe portion 111, and the fourth duct member. 140 has an eleventh engaging portion 173 and a twelfth engaging portion 174 provided on the connection wall portion 143. The ninth engaging portion 171 and the tenth engaging portion 172 are convex portions that protrude outward in the left-right direction from the left and right side surfaces of the lower pipe portion 111. The eleventh engaging portion 173 and the twelfth engaging portion 174 are substantially rectangular holes penetrating from side to side where the engaging portions 171 and 172 are engaged. The eleventh engaging portion 173 engages with the ninth engaging portion 171, and the twelfth engaging portion 174 engages with the tenth engaging portion 172. The first duct member 110 is provided with a fifth connecting pipe portion 114 that branches from the lower pipe portion 111 and extends substantially upward and fits inside the fourth duct member 140.

  The engaging portions 151, 152, 161, 162, 171, 172 have a substantially triangular shape in the cross-sectional view shown in FIG. Specifically, the engaging portions 151, 152, 161, 162, 171, and 172 include contact surfaces 151A, 152A, 161A, 162A, 171A, and 172A, and inclined surfaces 151B, 152B, 161B, 162B, 171B, and 172B. have. The contact surfaces 151A, 152A, 161A, 162A, 171A, and 172A are flat surfaces that are substantially orthogonal to the direction in which the second duct member 120 or the fourth duct member 140 extends (the vertical direction in FIG. 5). In addition, the inclined surfaces 151B, 152B, 161B, 162B, 171B, and 172B are connected to the corresponding connecting pipe portions 113, 131, and 114 from the outer ends in the left-right direction of the contact surfaces 151A, 152A, 161A, 162A, 171A, and 172A. The surface is inclined so as to approach the center in the left-right direction of the duct D toward the tip.

  The first engaging portion 151 and the third engaging portion 153 are provided on the right side surface of the first connecting portion C1, and the second engaging portion 152 and the fourth engaging portion 154 are provided on the first connecting portion C1. It is provided on the left side. The fifth engaging portion 161 and the seventh engaging portion 163 are provided on the right side surface of the second connecting portion C2, and the sixth engaging portion 162 and the eighth engaging portion 164 are the second connecting portion. It is provided on the left side of C2. The ninth engaging portion 171 is provided on the right side surface of the lower pipe portion 111, and the tenth engaging portion 172 is provided on the left side surface of the lower pipe portion 111. The eleventh engagement portion 173 is provided on the right connection wall portion 143, and the twelfth engagement portion 174 is provided on the left connection wall portion 143.

  As shown in FIG. 2, the duct D is disposed across the seat cushion S1 and the seat back S2. Specifically, in the duct D, the first duct member 110 and the fourth duct member 140 are mainly disposed in the seat cushion S1, the third duct member 130 is disposed in the seat back S2, and the second duct member 120 is the seat cushion. It is arranged so as to straddle S1 and the seat back S2.

  As shown in FIG. 6, in the duct D, the first duct member 110 is disposed below the support member 30 and to the right of the center (center plane CP) of the seat cushion S1 in the left-right direction. The front end portion of the first duct member 110 is connected to the blower device 70 disposed on the lower side of the pan frame 12, and the lower pipe portion 111 extends substantially rearward. As shown in FIG. 7, the bending tube portion 112 is bent in a substantially U shape that is convex below the rear pipe 13 when viewed from the left-right direction. More specifically, the bending tube portion 112 is curved so as to pass through the lower side, the rear side, and the upper side of the rear end portion of the support member 30 so as to avoid the rear end portion of the support member 30. The first connecting pipe portion 113 extends substantially vertically through the front side of the rear pipe 13 toward the upper seat back S2.

  The duct D is arranged so that the second duct member 120 extends substantially vertically and straddles the cushion frame F1 and the back frame F2. As shown in FIG. 8, in the duct D, the first upper pipe portion 132 and the second upper pipe portion 133 of the third duct member 130 connected to the upper end of the second duct member 120 extend toward the central plane CP. The back connection pipe portion 134 extending substantially forward from the second upper pipe portion 133 is connected to the air passage A2 formed in the back pad P2 (see FIG. 2). Bent tube portion 112, first connection portion C1 (first connection tube portion 113 and second connection tube portion 121), first bellows portion 122, second connection portion C2 (third connection tube portion 123 and fourth connection tube portion) 131) is located at a position closer to the cushion side frame 11 on the right side of the center plane CP in the left-right direction.

  As shown in FIG. 7, the duct D is disposed such that a portion extending substantially vertically passes through the front side of the rear pipe 13 and the lower frame 24 from the seat cushion S <b> 1 toward the seat back S <b> 2. Specifically, the first connection portion C1 is disposed so as to pass through the front side of the rear pipe 13, and the second connection portion C2 and the first upper pipe portion 132 are disposed so as to pass through the front side of the lower frame 24. .

  Moreover, the duct D is arrange | positioned so that the 1st connection part C1 may overlap with the rear pipe 13 seeing from the front-back direction. Further, the duct D is disposed so that the second connection portion C2 and the first upper pipe portion 132 overlap the lower frame 24 when viewed from the front-rear direction.

  As shown in FIG. 4, the cross-sectional shape of the flow path of the first connecting portion C1, which is a portion of the duct D positioned on the front side of the rear pipe 13, is a horizontal dimension D12 in which the front-rear dimension D11 is orthogonal to the front-rear direction. Is smaller than Moreover, as for the shape of the flow path cross section of the second connection portion C2, which is a portion of the duct D positioned on the front side of the lower frame 24, the dimension D21 in the front-rear direction is smaller than the dimension D22 in the left-right direction. That is, the first connection part C1 (first connection pipe part 113 and second connection pipe part 121) and the second connection part C2 (third connection pipe part 123 and fourth connection pipe part 131) are both flattened back and forth. Has a cross-sectional shape.

  Returning to FIG. 7, the first bellows portion 122 is located above the rear pipe 13. More specifically, the first bellows portion 122 is located between the rear pipe 13 and the lower frame 24. Specifically, the first bellows portion 122 is located between the rear pipe 13 and the lower frame 24 in a direction connecting the rear pipe 13 and the lower frame 24 with the shortest distance (see an arrow).

  The skin U1 of the seat cushion S1 that covers the cushion frame F1 and the cushion pad P1 is fixed to the rear pipe 13 by hooking a hook U11 provided at an end of the skin U1 to the rear pipe 13 that constitutes the cushion frame F1.

  According to the present embodiment described above, the duct D is arranged so that the vicinity of the first connection portion C1 passes through the front side of the rear pipe 13 and heads from the seat cushion S1 to the seat back S2. The vicinity of the first connection portion C1 can be protected later. Thereby, it can suppress that a passenger | crew's foot | leg of a backseat hits the 1st connection part C1 vicinity of the duct D. FIG. Further, since the duct D does not pass the rear side of the rear pipe 13, the duct D does not get in the way when the hook U 11 provided on the skin U 1 of the seat cushion S 1 is fixed to the rear pipe 13. Fixing work can be facilitated.

  Further, since the duct D is disposed so that the vicinity of the second connection portion C2 passes through the front side of the lower frame 24 and faces the seat back S2 from the seat cushion S1, the lower connection portion C2 of the duct D is arranged by the lower frame 24. The neighborhood can be protected later. Thereby, it can suppress that a passenger | crew's foot | leg of a backseat hits 2nd connection part C2 vicinity.

  Further, since the first bellows portion 122 is positioned above the rear pipe 13, the duct D can be received by the rear pipe 13 even if the foot of the passenger in the rear seat hits the rear portion of the seat cushion S1. As a result, the rear pipe 13 can prevent the occupant's foot in the rear seat from hitting the soft first bellows portion 122 of the duct D.

  In addition, since the first bellows portion 122 is positioned between the rear pipe 13 and the lower frame 24, the duct D has the rear pipe 13 even if the rear passenger seat hits the rear portion of the seat cushion S1 or the lower portion of the seat back S2. Or the lower frame 24. As a result, the rear pipe 13 and the lower frame 24 can prevent the rear passenger's feet from hitting the first bellows portion 122.

  Further, since the duct D is arranged so that the first connecting portion C1 overlaps the rear pipe 13 when viewed from the front-rear direction, the duct D is received by the rear pipe 13 even if a rear passenger seat hits the rear portion of the seat cushion S1. be able to. As a result, the rear pipe 13 can suppress the foot of the passenger in the rear seat from hitting the connecting portion between the first duct member 110 and the second duct member 120.

  Further, since the duct D is arranged so that the second connection portion C2 overlaps the lower frame 24 when viewed from the front-rear direction, the lower frame 24 even if the foot of the passenger in the rear seat hits the lower portion of the seat back S2. You can catch it. Accordingly, the lower frame 24 can suppress the foot of the passenger in the rear seat from hitting the connection portion between the second duct member 120 and the third duct member 130.

  Moreover, since the front-rear dimension D11 is smaller than the left-right dimension D12 in the shape of the flow path cross section of the first connection part C1 located on the front side of the rear pipe 13, the first connection part C1 can be thinned back and forth. Thereby, since the duct D can be arrange | positioned compactly in the front-back direction in the front side of the rear pipe 13, it can suppress that the vehicle seat S enlarges in the front-back direction.

  Moreover, since the front-rear dimension D21 is smaller than the left-right dimension D22 in the shape of the flow path cross section of the second connection part C2 located on the front side of the lower frame 24, the second connection part C2 can be thinned back and forth. . Thereby, since the duct D can be arrange | positioned compactly in the front-back direction in the front side of the lower frame 24, it can suppress that the vehicle seat S enlarges in the front-back direction.

  Moreover, since the duct D has the curved pipe part 112 curved in a U shape, the rigidity of the duct D can be improved. Further, since the duct D is curved so as to avoid the rear end portion of the support member 30 in the curved pipe portion 112, interference between the duct D and the support member 30 disposed below the rear pipe 13 is suppressed. Can do. In other words, since the interference between the duct D and the support member 30 is suppressed by the bending tube portion 112, the front and rear dimensions of the support member 30 that receives the load from the occupant can be secured. Therefore, the stability of the support of the vehicle seat S and the sitting comfort can be improved.

  In addition, since the first engaging portion 151 and the second engaging portion 152 are convex portions, and the third engaging portion 153 and the fourth engaging portion 154 are holes in which the convex portions are engaged, the first duct The member 110 and the second duct member 120 can be connected with a simple configuration. The same applies to the connection between the second duct member 120 and the third duct member 130 and the connection between the first duct member 110 and the fourth duct member 140.

  When the occupant sits on the seat cushion S1 and the cushion pad P1 and the support member 30 are bent downward by the weight, the position of the first duct member 110 is lowered, and the second duct is connected to the first duct member 110. In this case, the contact surfaces 151A and 152A of the engaging portions 151 and 152 are caught on the edges of the engaging portions 153 and 154. The member 110 can be prevented from coming off from the second duct member 120.

  Further, when the seat back S2 is rotated forward with respect to the seat cushion S1, the third duct member 130 is rotated together with the seat back S2, so that the third duct member 130 is detached from the second duct member 120. However, in this case, the contact surfaces 161A and 162A of the engaging portions 161 and 162 are caught by the edges of the engaging portions 163 and 164, so that the third duct member 130 is It is possible to suppress detachment from the two duct member 120.

Next, a second embodiment will be described. In the present embodiment, the right side corresponds to “one side in the left-right direction”, and the left side corresponds to “the other side in the left-right direction”. In the following description, the same components as those in the first embodiment are denoted by the same reference numerals, description thereof is omitted as appropriate, and differences from the first embodiment will be described in detail.
As shown in FIG. 9, the back frame F <b> 2 as a frame member includes a pipe frame 26, sheet metal frames 27 and 28, a bridging frame 25, and a wire frame 29.

  The pipe frame 26 is a frame in which a metal pipe is bent into a substantially rectangular shape and the ends of the pipe are connected to each other by welding at the lower part. The left and right side frames 26A extending substantially vertically and an upper frame as a pair of connecting parts. 26B and lower frame 26C. The upper frame 26 </ b> B and the lower frame 26 </ b> C extend in the left-right direction, and are disposed apart from each other in the orthogonal direction orthogonal to the left-right direction, specifically, the vertical direction. The upper frame 26B connects the upper ends of the left and right side frames 26A, and the lower frame 26C connects the lower ends of the left and right side frames 26A.

  The sheet metal frames 27 and 28 are made of sheet metal. The sheet metal frame 27 is formed in an elongated shape that is long in the vertical direction, and is welded to the right portion of the pipe frame 26. The right side frame 26 </ b> A and the sheet metal frame 27 constitute the right back side frame 21. Further, the sheet metal frame 28 is welded to the pipe frame 26 in a state in which the left lower end portion of the pipe frame 26 is held. The left side frame 26 </ b> A and the sheet metal frame 28 constitute the left back side frame 21. The left and right back side frames 21 serving as a pair of side portions are spaced apart in the left-right direction.

  The wire frame 29 is a frame formed by bending a metal wire (rod) into a substantially C shape, and is fixed to the back side frame 21 located on the left side. Specifically, the upper end of the wire frame 29 is fixed by welding near the center of the left side frame 26A in the vertical direction, and the lower end is fixed by welding to the lower end of the left side frame 26A.

  As shown in FIG. 10A, the duct D includes a first duct member 110 as a first tubular member, a second duct member 120 as a second tubular member, a third duct member 130, 4 duct members 140 are connected. In the present embodiment, the first upper pipe portion 132 </ b> A of the third duct member 130 extends substantially rearward from the upper end of the fourth connection pipe portion 131. The second upper pipe portion 133A extends from the rear end of the first upper pipe portion 132A toward the right (the center of the vehicle seat S in the left-right direction) and is connected to the back connection pipe portion 134.

  As shown in FIG. 10 (b), the first duct member 110 has a first engagement convex portion 155 provided in the first connection portion C1, and the second duct member 120 has the first connection portion. It has the 1st engagement recessed part 156 provided in C1. The first engaging convex portion 155 is a convex portion having a shape protruding from the outer peripheral surface of the first connecting tube portion 113 toward the outside of the first connecting tube portion 113, and the entire outer peripheral surface of the first connecting tube portion 113 is. It is provided over the circumference. The first engagement recess 156 is a recess formed on the inner peripheral surface of the second connection pipe portion 121, and is provided over the entire circumference of the inner peripheral surface of the second connection pipe portion 121. The first duct member 110 and the second duct member 120 insert the first connecting pipe portion 113 inside the second connecting pipe portion 121 to engage the first engaging convex portion 155 and the first engaging concave portion 156. It is connected by letting.

  Further, as shown in FIG. 10C, the second duct member 120 has a second engagement recess 166 provided in the second connection portion C2, and the third duct member 130 has a second connection. It has the 2nd engagement convex part 165 provided in part C2. The second engagement recess 166 is a recess formed on the inner peripheral surface of the third connection pipe portion 123, and is provided over the entire circumference of the inner peripheral surface of the third connection pipe portion 123. The second engaging convex portion 165 is a convex portion having a shape protruding from the outer peripheral surface of the fourth connecting tube portion 131 toward the outside of the fourth connecting tube portion 131, and the entire outer peripheral surface of the fourth connecting tube portion 131. It is provided over the circumference. The second duct member 120 and the third duct member 130 insert the fourth connecting pipe portion 131 inside the third connecting pipe portion 123 to engage the second engaging convex portion 165 and the second engaging concave portion 166. It is connected by letting.

  In addition, an engagement convex part and an engagement recessed part are the inside of a pipe part on the inner peripheral surface of a pipe part arrange | positioned outside such as the 2nd connection pipe part 121 and the 3rd connection pipe part 123. The engaging recess is provided in a shape that is recessed toward the inside of the tube portion on the outer peripheral surface of the tube portion inserted inside such as the first connection tube portion 113 or the fourth connection tube portion 131. It is good also as a structure.

  As shown in FIG. 11, in the duct D, the lower pipe portion 111 is disposed on the lower side of the support member 30 and to the left of the center plane CP. The lower pipe part 111 extends substantially front and rear, and the front end part is connected to the blower 70. In the present embodiment, the support member 30 includes a plurality of, specifically, three wire members 31 arranged side by side. Each wire member 31 is provided in a state of being bridged between the pan frame 12 as the front frame and the rear pipe 13. A part of the duct D is located outside the wire member 31 arranged on the outermost side in the left-right direction. Specifically, in the duct D, the left side portion of the rear end portion of the lower pipe portion 111 is located outside the wire member 31 disposed on the leftmost side in the left-right direction.

  As shown in FIG. 12, the duct D includes the bending tube portion 112, the first connection portion C1, the first bellows portion 122, the second connection portion C2, and the first upper tube portion 132A in the left-right direction of the seat back S2. It is arranged at a position closer to the left end than the center (center plane CP). In other words, the duct D is disposed at a position where the vertically extending portion is closer to the left end than the center plane CP in the left-right direction of the seat back S2.

  As shown in FIG. 13, the duct D is disposed such that a portion extending vertically extends from the seat cushion S1 toward the seat back S2 through the rear pipe 13 and the front side of the lower frame 26C. Specifically, the portion extending up and down of the duct D includes the bending tube portion 112, the first connection portion C1, the first bellows portion 122, and the second connection portion C2. The duct D is disposed so that the upper end portion of the bending tube portion 112 and the first connection portion C1 pass through the front side of the rear pipe 13, and the upper end portion of the first bellows portion 122 and the second connection portion C2 of the lower frame 26C. It is arranged to pass through the front side. More specifically, the upper end portion of the bending tube portion 112 and the first connection portion C1 are disposed between the rear pipe 13 and the cushion pad P1 in the front-rear direction, and the upper end portion of the first bellows portion 122 and the second connection portion. C2 is disposed between the lower frame 26C and the back pad P2 in the front-rear direction.

  The seat back S2 is configured to be pivotable back and forth (reclinable) with respect to the seat cushion S1, and the first bellows portion 122 is seated as shown in FIG. 13 in which the seat back S2 rises with respect to the seat cushion S1. In the state, it is curved in an arc shape that protrudes backward as a whole. More specifically, in the present embodiment, the first bellows portion 122 is in a seated state and is curved in an arc shape (see the upper arrow) with the upper end protruding forward, and the portion below the upper end is rearward. It is curved so as to form a substantially S shape by being curved in an arc shape (see the arrow on the lower side) that is convex. Moreover, the 1st bellows part 122 has the part, specifically, the lower end part located between the cushion pad P1 and the back pad P2.

In the present embodiment, the vehicle seat S includes a cover member DC.
The cover member DC is made of the same fabric or leather as the skins U1 and U2, and has flexibility. For example, as shown in FIG. 10, the cover member DC is attached to the duct D by stitching the opposite end portions of the sheet-like member having a substantially C shape in cross section into a tubular shape and covering the duct D. Returning to FIG. 13, the cover member DC is attached so as to mainly cover the first bellows portion 122 and the second connection portion C2. Since the cover member DC covers the first bellows portion 122, the cover member DC covers a portion of the duct D that straddles the seat cushion S1 and the seat back S2.

  Further, the duct D is disposed in a state where the first connection portion C1 as an overlapping portion is in contact with the rear pipe 13. The first connection portion C1 is a portion where the first connection pipe portion 113 of the first duct member 110 is inserted and overlapped inside the second connection pipe portion 121 of the second duct member 120. The duct D is in contact with the rear pipe 13 at a lower portion of the first connecting portion C1 than a portion where the first engaging convex portion 155 and the first engaging concave portion 156 are provided. In the first connection portion C1, the second connection pipe portion 121 of the second duct member 120 is inserted inside the first connection pipe portion 113 of the first duct member 110, contrary to the configuration shown in FIG. It may be a structure which overlapped. The same applies to the second connection portion C2.

  As shown in FIGS. 14 and 15, the cushion pad P <b> 1 and the back pad P <b> 2 as the pad members have notches 65 and 75 as the recesses in which the duct D is disposed, respectively.

  Specifically, as shown in FIG. 14, the cushion pad P1 includes a cushion pad central portion PC1 and left and right cushion pad side portions PS1 projecting above the cushion pad central portion PC1. The notch 65 has a shape in which the left side of the rear end portion of the cushion pad central portion PC1 is notched and the left and upper and lower sides are opened. In the notch 65, mainly the first connection portion C1 and the upper portion of the bending tube portion 112 (see FIG. 13), which are portions extending vertically in the duct D, are arranged.

  As shown in FIG. 15, the back pad P2 includes a back pad center portion PC2 and left and right back pad side portions PS2 projecting forward from the back pad center portion PC2. The notch 75 has a shape in which the left side of the lower end portion of the back pad center portion PC2 is notched and the lower and front and rear sides are opened. As shown in FIG. 13, the upper portion of the first bellows portion 122 and the second connection portion C <b> 2 that are portions extending vertically in the duct D are mainly disposed in the notch 75.

  As shown in FIG. 14, the cushion pad P1 has a suspending groove G1 for suspending the skin U1 (see FIG. 13) of the seat cushion S1 on the upper surface. The suspension groove G1 is more than the pair of left and right first suspension grooves G11 extending in the front-rear direction, the second suspension groove G12 connecting the rear ends of the pair of first suspension grooves G11, and the second suspension groove G12. It has the 3rd hanging groove G13 which connects a pair of 1st hanging grooves G11 in front. The first hanging groove G11 is formed at the boundary between the cushion pad center portion PC1 and the left and right cushion pad side portions PS1. A part of the duct D is located outside the pair of left and right first hanging grooves G11 in the left-right direction. Specifically, in the duct D, the left side portion of the rear end portion of the lower pipe portion 111 is more than one first hanging groove G11, specifically, the first hanging groove G11 located on the left side in the left-right direction. Located on the outside.

  As shown in FIG. 9, the skin U2 as the skin member is formed in a substantially bag shape with the bottom open, and is covered with the back frame F2 and the back pad P2 from above to cover the back frame F2 and the back pad P2. . The skin U2 is disposed so as to surround the upper frame 26B and the lower frame 26C of the pipe frame 26 when viewed from the left-right direction. As shown in FIG. 13, the skin U <b> 2 has a skin body 510, a first end 520, and a second end 530 when viewed from the left-right direction.

  The skin main body 510 is a main body portion of the skin U2 excluding the first end portion 520 and the second end portion 530, and mainly covers the front side, the upper side, and the left and right sides of the back frame F2 and the back pad P2.

  The first end 520 is one end of the skin U2 as viewed from the left-right direction. The first end portion 520 passes through the lower side of the back pad P2 from the front side which is the passenger side of the seat back S2 toward the rear side which is opposite to the passenger side of the seat back S2 when viewed from the left-right direction. It extends and is fastened to the engaged member 570 of the second end 530 on the rear side of the seat back S2.

  The second end 530 is an end opposite to the first end 520 when viewed from the left-right direction. The second end portion 530 extends from the upper side to the lower side on the rear side of the seat back S2, and covers the rear side of the back frame F2 and the back pad P2.

As shown in FIG. 16, the first end 520 includes a first tongue 521, a second tongue 522, a third tongue 523, a first engagement member 540 as an engagement member, and a second It has the 2nd engagement member 550 and 3rd engagement member 560 as an engaging part.
The first tongue portion 521 is a portion extending from the lower end of the skin main body 510 from the front side to the rear side through the right side of the portion extending up and down of the duct D. The free end 521A of the first tongue 521 extends to substantially the same position as the left edge of the second tongue 522 in the left-right direction so that the left end of the free end 521A intersects the second tongue 522. . For this reason, the 1st tongue part 521 has comprised the substantially L shape.

The second tongue portion 522 is a band-shaped portion that extends from the lower end of the skin main body 510 toward the rear side from the front side through the left side of the portion extending up and down of the duct D. An opening through which the portion extending up and down of the duct D is passed through the skin U2 by the lower edge of the skin body 510, the left edge of the first tongue 521, and the right edge of the second tongue 522 A portion 511 is formed.
The third tongue 523 is provided so as to extend from the left end of the free end 521A of the first tongue 521 outward in the left-right direction and obliquely upward in the posture shown in FIG.

  The first engagement member 540 is made of resin and is provided on the first tongue 521. Specifically, the first engaging member 540 is sewn or bonded to the front surface of the free end 521A of the first tongue 521 in the posture shown in FIG. 521 is attached. The first engaging member 540 has a first engaging portion 541 and a plate-like portion 542. The first engaging portion 541 is a portion that engages with the engaged member 570 of the second end portion 530, and is formed in a hook shape that is long on the left and right. The plate-like portion 542 is a flat plate-like portion and extends from the left end of the first engagement portion 541 toward the left side.

  The second engagement member 550 is made of resin and is provided on the second tongue 522. Specifically, the second engaging member 550 is sewn or bonded to the upper surface of the free end of the second tongue 522 in the posture shown in FIG. Is attached. The second engaging member 550 is a portion that engages with the engaged member 570 of the second end portion 530, and is formed in a hook shape. The surface to which the second engagement member 550 of the second tongue 522 is attached and the surface to which the first engagement member 540 of the first tongue 521 is attached are on the same side of the first end 520 (skin U2). It is.

  The third engagement member 560 is made of resin and is provided on the third tongue 523. Specifically, the third engaging member 560 is sewn or bonded to the front surface of the upper end portion and the left end portion of the third tongue portion 523 in the posture shown in FIG. It is attached to the part 523. The third engagement member 560 is formed in a hook shape. The surface to which the third engagement member 560 of the third tongue 523 is attached and the surface to which the first engagement member 540 of the first tongue 521 is attached are on the same side of the first end 520 (skin U2). It is.

  The second end portion 530 has an engaged member 570 as an engaged portion. The engaged member 570 is a flat plate-like member made of resin, and is provided at the second end 530. Specifically, the engaged member 570 is sewn or bonded to the front surface of the free end portion 531 of the second end portion 530 in the posture shown in FIG. Is attached. The engaged member 570 is a member harder than the skin U2.

Next, a manufacturing method of the vehicle seat S, specifically, a method of attaching the skin U2 will be described. In addition, when attaching the skin U2, the duct D is attached first before attaching the skin U2.
When attaching the skin U2, first, as shown in FIG. 9, the skin U2 is put on the back pad P2 covering the back frame F2 from above. Next, the first end portion 520 is disposed on the rear side of the back pad P2 through the lower side of the back pad P2. Specifically, as shown in FIG. 16, the first tongue 521 and the third tongue 523 are arranged on the rear side of the back pad P2 through the right side of the portion extending vertically of the duct D, and the second tongue 522 is It arrange | positions on the back side of the back pad P2 through the left side of the part extended up and down of the duct D.

  Next, the second engaging member 550 provided on the second tongue 522 is engaged with the left end of the first tongue 521 as shown in FIG. Specifically, the second tongue 522 (see FIG. 16) is passed through the front side of the left end of the free end 521A of the first tongue 521, and the second engagement member 550 is passed through the left end of the free end 521A. Engage with. As a result, the hook-like second engaging member 550 has the first tongue portion 521 and the plate in a state where the left end portion of the free end portion 521A and the plate-like portion 542 of the first engaging member 540 are sandwiched. Engage with both of the features 542.

  Next, the first end 520 is fastened to the second end 530. Specifically, as shown in FIGS. 18A and 18B, the free end portion 531 of the second end portion 530 is folded back to make the engaged member 570 and the free end portion 531 be the first engaging member. It is inserted into the hook-shaped first engaging portion 541 of 540 and also inserted into the hook-shaped second engaging member 550.

  As a result, as shown in FIG. 18A, the first engagement portion 541 sandwiches the first tongue portion 521, the free end portion 531 of the second end portion 530, and the engaged member 570. The first tongue 521 of the first end 520 is fastened to the second end 530. As shown in FIG. 18B, the second engagement member 550 includes a second tongue 522, a plate-like portion 542 of the first engagement member 540, a first tongue 521, and a second end. The second tongue portion 522 of the first end portion 520 is fastened to the second end portion 530 with the free end portion 531 of the portion 530 and the engaged member 570 interposed therebetween.

  Next, as shown in FIG. 19, the third tongue 523 is attached to the wire frame 29 of the back frame F2. Specifically, the third tongue portion 523 is disposed on the outer side in the left-right direction from the rear side along the lower portion of the left back side frame 21, and the third engagement member 560 is disposed substantially on the lower portion of the wire frame 29 from the outer side in the left-right direction. Hang on the part that extends back and forth. As a result, the third tongue 523 is fastened to the wire frame 29, and the skin U2 is fastened to the back frame F2.

According to this embodiment described above, the same effect as that of the first embodiment can be obtained.
Moreover, since the cushion pad P1 and the back pad P2 have the notches 65 and 75 in which portions extending in the vertical direction of the duct D are disposed, interference between the duct D and the cushion pad P1 and the back pad P2 can be suppressed. . Thereby, it can suppress that unnecessary force acts on the duct D from the cushion pad P1 or the back pad P2. Moreover, since the duct D can be arrange | positioned compactly, it can suppress that the vehicle seat S enlarges.

  Moreover, since the part (the upper end part of the curved pipe part 112 and the 1st connection part C1) extended up and down of the duct D is arrange | positioned between the rear pipe 13 and the cushion pad P1 in the front-back direction, the rear pipe 13 and the cushion pad P1 It is possible to suppress the duct D from moving back and forth. In addition, since the portion (the upper end portion of the first bellows portion 122 and the second connection portion C2) extending in the vertical direction of the duct D is disposed between the lower frame 26C and the back pad P2 in the front-rear direction, the lower frame 26C and the back It is possible to prevent the duct D from moving back and forth by the pad P2.

  Further, the seat back S2 is configured to be reclining with respect to the seat cushion S1, and a portion extending vertically in the duct D has a first bellows portion 122, and a part of the first bellows portion 122 is a cushion pad P1 and a back pad. Since it is located between P2, duct D can be made to follow reclining operation of seat back S2.

  Moreover, since the 1st bellows part 122 is curving in the arc shape which protrudes back in the seating state, the duct D can be made to follow a reclining operation | movement of seat back S2 favorably.

  Further, since a part of the duct D is positioned outside the pair of first hanging grooves G11 in the left-right direction, the cushion pad P1 is bent downward due to a load when the occupant sits. Even if it exists, it can suppress that unnecessary force acts on the duct D.

  In addition, since a part of the duct D is located outside the wire member 31 arranged on the outermost side in the left-right direction, the wire member 31 (support member 30) is directed downward by a load when the occupant sits. Even when it is bent, unnecessary force can be prevented from acting on the duct D.

  The duct D is in contact with the rear pipe 13 at the first connection portion C1, but the first connection portion C1 is the second connection between the first connection pipe portion 113 of the first duct member 110 and the second duct member 120. Since the rigidity of the duct portion 121 is high, the rigidity of the portion of the duct D that contacts the rear pipe 13 can be increased. Thereby, a deformation | transformation of the duct D can be suppressed by the structure arrange | positioned in the state in which a part of duct D contacted the rear pipe 13 (seat frame F).

  In addition, the seat back S2 is configured to be reclining with respect to the seat cushion S1, and the vehicle seat S includes a cover member DC that covers a portion of the duct D that extends over the seat cushion S1 and the seat back S2. D is covered with the cover member DC and is not directly exposed from between the seat cushion S1 and the seat back S2. Thus, the appearance of the vehicle seat S including the duct D can be improved.

  Moreover, since the 1st edge part 520 of the skin U2 has the 1st tongue part 521, the 2nd tongue part 522, the 1st engagement member 540, and the 2nd engagement member 550, the duct D and the skin U2 The first end portion 520 of the skin U <b> 2 can be fastened to the engaged member 570 while suppressing interference with the engagement member 570.

  Further, since the first engagement member 540 has a plate-like portion 542 with which the second engagement member 550 is engaged, the second engagement member 550 is engaged with both the first tongue portion 521 and the plate-like portion 542. Can be made. Thereby, since the 1st tongue part 521 and the 2nd tongue part 522 can be fastened firmly, the 1st end part 520 can be fastened to the to-be-engaged member 570 firmly.

  Further, since the engaged member 570 is provided at the second end portion 530, the first end portion 520 and the second end portion 530, that is, the end portions of the skin U2 can be fastened to each other. Thereby, for example, there is no need to provide a portion for fastening the first end portion 520 and a portion for fastening the second end portion 530 to the back frame F2, so that the back frame F2 and the like can be configured simply.

  Further, since the skin U2 has the third tongue 523 that is fastened to the wire frame 29 of the back frame F2, the skin U2 can be fastened to the back frame F2. Thereby, epidermis U2 can be attached firmly.

  Although the embodiment has been described above, the present invention is not limited to the embodiment. About a concrete structure, it can change suitably in the range which does not deviate from the meaning of invention as follows.

  For example, in the modification shown in FIG. 20, the seat back S2 (back pad P2) includes a first air passage A21 formed in the lower portion, and the first air passage A21 above the first air passage A21 and independent of the first air passage A21. And a second air passage A22 that is formed (not connected to the first air passage A21). The duct D includes a third duct member 130 serving as a first duct portion connected to the first air passage A21, and a second duct portion branching out from the third duct member 130 and connected to the second air passage A22. As a fifth duct member 180.

  The third duct member 130 further includes a branch pipe part 135 that extends substantially upward from the upper end of the fourth connection pipe part 131. The front end of the first back connection pipe part 134 is connected to the first air passage A21 formed in the lower part of the back pad P2.

  The fifth duct member 180 includes a third upper pipe portion 181 that extends substantially vertically, a fourth upper pipe portion 182 that extends obliquely upward to the left from the upper end of the third upper pipe portion 181, and an upper end of the fourth upper pipe portion 182. A second back connecting pipe portion 183 extending substantially forward. The third upper pipe portion 181 is formed in such a size that the upper end of the branch pipe portion 135 of the third duct member 130 is fitted inside, and the lower end is connected to the branch pipe portion 135 of the third duct member 130. . The second back connection pipe part 183 is connected to a second ventilation path A22 formed on the first ventilation path A21 of the back pad P2 at the front end.

  According to such a configuration, the air blower 70 and the plurality of ventilation paths A21, A22 can be connected by the duct D, so that a configuration in which air is blown over a wide range of the seating surface of the seat back S2 can be realized.

  The configuration shown in FIG. 20 may be applied to the seat cushion S1 together with the seat back S2 or instead of the seat back S2. That is, the seat cushion S1 has a first ventilation path and a second ventilation path. For example, the duct D is branched at the lower side of the seat cushion S1, and is individually connected to the first ventilation path and the second ventilation path. You may do it. According to this, the structure which blows off air in the wide range of the seat surface of seat cushion S1 is realizable.

  Further, the duct D may have a configuration having a symmetrical shape with respect to the configuration described in the embodiment. Further, the duct D may have a configuration that does not include, for example, a curved portion (the curved pipe portion 112). Moreover, in the said embodiment, although the duct D had the 1st bellows part 122 as a flexible part, it is not limited to this, If a flexible part has flexibility, the structure will be especially ask | required. Absent. In the embodiment, the duct D is formed by connecting a plurality of parts. However, the present invention is not limited to this, and the duct D may be formed by a single part.

  In the first embodiment, the first engaging portion 151 and the second engaging portion 152 are convex portions protruding outward, and the third engaging portion 153 and the fourth engaging portion 154 are convex portions. However, the present invention is not limited to this. For example, the first engaging portion and the second engaging portion may be convex portions protruding inward. Further, the third engagement portion and the fourth engagement portion may be convex portions, and the first engagement portion and the second engagement portion may be holes. Further, the hole may be a hole with a bottom (concave portion) instead of a through hole. Further, the first engaging portion and the second engaging portion may have different configurations, for example, one may be a convex portion and the other may be a hole. The same applies to the third engaging portion and the fourth engaging portion. The same can be said for the other engaging portions (161 to 164, 171 to 174). Further, the duct may have a configuration in which the engaging portion is not provided in the connecting portion.

  In the above embodiment, the rear pipe 13 made of a pipe material is exemplified as the rear frame. However, the present invention is not limited to this. For example, the rear frame may be a plate-like frame made of sheet metal. In the first embodiment, the plate-like lower frame 24 made of sheet metal is exemplified as the lower frame. However, the present invention is not limited to this. For example, the lower frame may be a frame made of a pipe material.

  Moreover, in the said embodiment, although the part extended up and down of the duct D was arrange | positioned in the left-right direction of the seat back S2, and it has been arrange | positioned in the position close | similar to the right or left end rather than the center, it is not limited to this. For example, as shown in FIG. 21, the duct D may be disposed such that a portion extending vertically is closer to the center (center plane CP) than the end in the left-right direction of the seat back S2. Specifically, the duct D extends back and forth under the seat cushion S1, and a rear pipe part 110A whose front end part is connected to a blower (not shown) and a rear pipe part 120A that extends substantially upward from the rear end of the lower pipe part 110A. And a back connecting pipe portion 130A that extends forward from the upper end of the rear pipe portion 120A and is connected to the back pad P2. The duct D has a lower pipe portion 110A, a rear pipe portion 120A that extends vertically, and a back connection pipe portion 130A that is closer to the center plane CP than the end in the left-right direction of the seat back S2, specifically, Is disposed at a position overlapping the central plane CP. According to such a configuration, the length of the duct D can be shortened.

  In the modification shown in FIG. 21, the rear pipe portion 120A is disposed so as to go from the seat cushion S1 to the seat back S2 through the rear pipe 13 of the cushion frame F1 and the front side of the lower frame 26C of the back frame F2. The cushion pad P1 has a notch 66 in which the rear pipe portion 120A is disposed at the center in the left-right direction at the rear end. Further, the back pad P2 has a notch 76 in which the rear pipe portion 120A is disposed at the center in the left-right direction at the lower end. The notches 66 and 76 have a shape in which the top and bottom and the rear are opened.

  Moreover, in the said embodiment, although a part of the lower pipe part 111 of the duct D was located outside the wire member 31 arrange | positioned on the outermost side in the left-right direction, it is not limited to this, For example, The entire duct may be located outside the wire member disposed on the outermost side. Moreover, the whole duct may be located between the two wire members arranged on the outermost side.

  Moreover, in the said embodiment, although a part of the lower pipe part 111 of the duct D was located outside a pair of 1st hanging groove G11 in the left-right direction, it is not limited to this, For example, a duct May be located outside the pair of hanging grooves extending in the front-rear direction. Further, the entire duct may be located between a pair of hanging grooves extending in the front-rear direction.

  Moreover, in the said embodiment, although the lower end part (a part of flexible part) of the 1st bellows part 122 was located between the cushion pad P1 and the back pad P2, it is not limited to this, For example, of a flexible part The whole may be located between the cushion pad and the back pad. Moreover, as long as the seat back does not recline with respect to the seat cushion, a portion other than the flexible portion may be positioned between the cushion pad and the back pad. Further, the duct may be configured without a flexible portion.

  Moreover, in the said embodiment, although the 1st connection part C1 (overlapping part) of the duct D was arrange | positioned in the state which contacted the rear pipe 13 of the back frame F2, it is not limited to this. For example, the duct may be arranged in a state in which a portion other than the overlapping portion is in contact with the frame, as long as the duct is hard and not easily deformed as a whole. Further, the duct may be arranged in a state of being separated from the frame so as not to contact the frame.

  In the second embodiment, the first engagement member 540 (engagement member) includes the first engagement portion 541 and the plate-like portion 542, and the second engagement member 550 is engaged with the plate-like portion 542. However, the present invention is not limited to this. For example, the engaging member may be configured not to include a plate-like portion. In other words, in the second embodiment, the second engagement member 550 (second engagement portion) is configured to engage both the first tongue portion 521 and the plate-like portion 542. The part may be configured to engage only with the first tongue.

  In the second embodiment, the skin U2 (skin member) has the third tongue 523 fastened to the wire frame 29 and is fastened to the back frame F2 (frame member). It is not limited. For example, the skin member may be configured not to include the third tongue portion. That is, the structure which does not fasten an outer skin member to a frame member may be sufficient. Further, the wire frame may have a configuration in which the frame member does not include the wire frame as long as there is no application other than fastening the skin member.

  Further, the configuration of the first end portion of the skin member and the configuration of fastening the skin member to the wire frame of the frame member described in the second embodiment may be applied to the seat cushion instead of the seat back. In this case, the cushion frame corresponds to a “frame member”, and the first end portion is, for example, a cushion from the upper side that is the passenger side of the seat cushion toward the lower side that is opposite to the passenger side of the seat cushion. It extends through the back side of the pad and is fastened to the engaged portion under the seat cushion. Furthermore, the first tongue extends from the upper side to the lower side through one side of the duct in the left-right direction, and the second tongue passes from the upper side to the lower side through the other side of the duct in the left-right direction. Extend.

  In the second embodiment, the engaged member 570 (engaged portion) to which the first end portion 520 is fastened is provided in the second end portion 530. However, the present invention is not limited to this. The engaging portion may be provided on the frame member or the like. In other words, the first end portion of the skin member may not be configured to be fastened to the second end portion, but may be configured to be fastened to the frame member or the like.

  In the second embodiment, the cover member DC is a soft member made of the same fabric or leather as the skins U1 and U2, but for example, if the seat back does not recline with respect to the seat cushion, The cover member may be a member harder than the skin. Further, the vehicle seat may be configured not to include a cover member.

  In the second embodiment, the notches 65 and 75 are exemplified as the recesses in which the upper and lower portions of the duct are disposed. However, the present invention is not limited to this. For example, in the second embodiment, as shown in FIG. 14, the recess (notch 65) of the cushion pad P <b> 1 has a shape in which the left and upper and lower sides are opened, but only the left and upper and lower sides are opened. It may be a shaped shape. That is, the recess of the cushion pad P1 may have a shape in which only one direction is opened when viewed from the top and bottom. In the second embodiment, as shown in FIG. 15, the recess (notch 75) of the back pad P2 has a shape in which the bottom and front and rear are opened, but only the bottom and the back are opened. It may be a shape. That is, the recess of the back pad P2 may have a shape in which the front side is closed.

  Moreover, although the sirocco fan was illustrated as the air blower 70 in the said embodiment, it is not limited to this, For example, a propeller fan, a turbo fan, etc. may be sufficient. Moreover, in the said embodiment, although the vehicle seat S was comprised so that air might be blown out from vent hole H1, H2, it is not limited to this, For example, even if comprised so that air may be sucked in from a vent hole Good. When the configuration for sucking air from the vent hole is applied in the form shown in FIG. 20, it is possible to realize a configuration for sucking air in a wide range of seating surfaces of the seat back and the seat cushion.

  Further, the blower device may be capable of switching between blowing and suction by switching the rotation direction of the impeller, for example. Moreover, in the said embodiment, although the vehicle seat S was provided with the air blower 70, the structure which does not provide the air blower may be sufficient as the vehicle seat itself. In other words, the air blower may be provided on the vehicle body of the automobile on which the vehicle seat is mounted. In this case, the vehicle seat can be configured such that the duct is connected to, for example, an air outlet or suction port provided in the vehicle body.

  Moreover, in the said embodiment, although the ventilation path connected with an air blower by the duct D was formed in both a seat cushion and a seat back, it is not limited to this, Only one of a seat cushion and a seat back The structure formed in this may be sufficient.

  Moreover, in the said embodiment, although vehicle seat S mounted in a motor vehicle was illustrated as a vehicle seat, it is not limited to this, The seat mounted in vehicles other than a motor vehicle, for example, a rail vehicle, a ship, an aircraft, etc. It may be.

  Moreover, you may implement combining each element demonstrated by above-described embodiment and modification arbitrarily.

DESCRIPTION OF SYMBOLS 11 Cushion side frame 13 Rear pipe 21 Back side frame 24 Lower frame 65,75 Notch 70 Air blower 110 1st duct member 112 Curved pipe part 120 2nd duct member 122 1st bellows part 130 3rd duct member 520 1st end part 521 First tongue portion 522 Second tongue portion 541 First engagement portion 550 Second engagement member 570 Engaged member A1 air passage A2 air passage C1 first connection portion C2 second connection portion D duct DC cover member P1 cushion pad P2 Back pad S Vehicle seat S1 Seat cushion S2 Seat back U2 Skin

Claims (14)

A vehicle seat comprising a seat cushion and a seat back,
Left and right cushion side frames constituting left and right frames of the seat cushion; and
A rear frame connecting the rear portions of the left and right cushion side frames;
A duct that is disposed across the seat cushion and the seat back, and that connects an air passage formed in at least one of the seat cushion and the seat back and a blower;
The vehicle seat is characterized in that the duct is disposed such that a portion extending vertically extends from the seat cushion toward the seat back through a front side of the rear frame. Left and right backside frames constituting left and right frames of the seat back;
A lower frame that connects lower portions of the left and right backside frames, and
2. The vehicle seat according to claim 1, wherein the duct is disposed such that a portion extending vertically extends from the seat cushion toward the seat back through a front side of the lower frame. The duct has a flexible portion having flexibility,
The vehicle seat according to claim 1, wherein the flexible portion is positioned above the rear frame. The duct has a flexible portion having flexibility,
The vehicle seat according to claim 2, wherein the flexible portion is positioned between the rear frame and the lower frame in a direction connecting the rear frame and the lower frame with a shortest distance.   The duct has a portion extending in the vertical direction connecting the first part and the second part, and a connecting portion between the first part and the second part is seen from the front and rear direction and the rear frame. The vehicle seat according to any one of claims 1 to 4, wherein the vehicle seat overlaps.   In the duct, the vertically extending portion connects the third part and the fourth part, and the connection part between the third part and the fourth part is seen from the front and rear direction and the lower frame. The vehicle seat according to claim 2, wherein the vehicle seat overlaps.   The shape of the flow path cross section of the portion of the duct located on the front side of the rear frame has a dimension in the front-rear direction smaller than a dimension in a direction orthogonal to the front-rear direction. The vehicle seat according to any one of claims.   The shape of the flow path cross section of the portion of the duct located on the front side of the lower frame has a front-rear dimension smaller than a dimension perpendicular to the front-rear direction. The vehicle seat according to claim 6.   9. The vehicle according to claim 1, wherein the duct is curved in a U-shape that is rearwardly convex below the rear frame when viewed from the left-right direction. Sheet. One of the seat cushion and the seat back has a first air passage and a second air passage,
The duct has a first duct portion connected to the first air passage, and a second duct portion extending from the first duct portion and connected to the second air passage. The vehicle seat according to any one of claims 1 to 9. A pad member for covering the seat cushion or the frame of the seat back;
The vehicle seat according to any one of claims 1 to 10, wherein the pad member has a recess in which a portion extending in the vertical direction of the duct is disposed. A cushion pad covering the frame of the seat cushion;
A back pad covering the frame of the seat back,
The seat back is configured to be reclining with respect to the seat cushion,
The portion extending vertically of the duct has a flexible portion having flexibility,
The flexible part is
At least a portion is located between the cushion pad and the back pad;
The vehicle seat according to any one of claims 1 to 10, wherein the seat back is curved in an arc shape protruding rearward in a seated state in which the seat back stands up with respect to the seat cushion. . The seat back is configured to be reclining with respect to the seat cushion,
The vehicle seat according to any one of claims 1 to 12, further comprising a cover member that covers a portion of the duct that extends over the seat cushion and the seat back. A frame member constituting a frame of the seat cushion or the seat back;
A pad member covering the frame member;
A skin member covering the pad member,
The skin member extends from the occupant side of the seat cushion or the seat back toward the side opposite to the occupant side when viewed from the left-right direction, and is covered on the side opposite to the occupant side of the seat cushion or the seat back. Having a first end fastened to the engagement portion;
The first end is
A first tongue that extends from the passenger side of the seat cushion or the seat back toward the opposite side of the passenger side through one side in the left-right direction of the duct;
A second tongue extending from the occupant side of the seat cushion or the seat back toward the opposite side of the occupant side through the other side in the left-right direction of the duct;
A first engagement portion provided on the first tongue portion and engaged with the engaged portion;
The second tongue portion is provided on the second tongue portion, and has an end portion on the other side in the left-right direction of the first tongue portion and a second engagement portion that engages with the engaged portion. The vehicle seat according to claim 13.

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