JP2018144518A - Vehicle seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle seat which can suppress a foot of a crewman on a rear seat from contacting a duct.SOLUTION: A vehicle seat comprising a seat cushion and a seat back comprises: a pair of cushion side frames 11; and a duct D which passes the rear side of a cushion frame F1 and extends toward the seat back from the seat cushion, and connects an air passage, which is formed on at least one of the seat cushion and the seat back, and an air blower. The duct D has a retreat part 190 which is located, in the rear of the cushion frame F1, at a position which is a position on a longitudinal direction inner side of the pair of cushion side frames 11 and is closer to one cushion side frame 11 than a longitudinal direction center of the pair of cushion side frames 11.SELECTED DRAWING: Figure 8

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 in which an air outlet and an air passage are formed, a blower attached to the bottom surface of the seat cushion, and a duct that communicates the air blower with 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 a prior art, since there exists a possibility that the passenger | crew's foot of a backseat may contact the duct which connects a ventilation apparatus and the ventilation path of a seat back, the structure which can suppress that a passenger | crew's foot | leg of a backseat hits a duct is desired. . Further, it is desirable that the seat can be made compact even in the configuration including 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 make the vehicle seat compact.
Another object of the present invention is to suppress interference between the duct and other members.
Another object of the present invention is to improve the rigidity of the duct.
Another object of the present invention is to secure a flow rate of air flowing in the duct.
It is another object of the present invention to suppress duct deformation and the like.
Moreover, an object of this invention is to reduce the influence by a duct and another member contacting.
Another object of the present invention is to easily connect an air passage and a duct.
Another object of the present invention is to allow air to flow well in a duct.

  The present invention for achieving the above object is a vehicle seat comprising a seat cushion and a seat back, wherein the seat back passes from the seat cushion through a pair of side frames and a rear side of the frame of the seat cushion. An air passage formed in at least one of the seat cushion and the seat back and a duct connecting the air blower, and the duct is located behind the frame of the seat cushion, It is characterized by having a retracting portion arranged at a position on the inner side in the left-right direction of the side frame and closer to one side frame than the center in the left-right direction of the pair of side frames.

  According to such a configuration, since the retracting portion of the duct is disposed close to the one side frame at the rear portion of the seat cushion, it is possible to suppress the foot of the passenger in the rear seat from hitting the duct. Further, since the retracting portion is disposed on the inner side in the left-right direction of the pair of side frames, the vehicle seat can be made compact in the left-right direction as compared with the case where the retracting portion is disposed on the outer side in the left-right direction.

  In the vehicle seat described above, the retracting portion may be configured to extend so as to be positioned forward as it goes downward.

  According to this, since the retracting portion of the duct is disposed at the rear portion of the seat cushion so as to be separated from the passenger's foot in the rear seat, it is possible to further suppress the foot of the passenger in the rear seat from hitting the duct. .

  In the vehicle seat described above, the pair of side frames includes a pair of cushion side frames constituting left and right frames of the seat cushion, and the vehicle seat is disposed between the pair of cushion side frames, The duct may be configured to include a lower inclined portion that is disposed on the lower side of the support member and extends so as to be positioned downward as it goes rearward.

  According to this, interference with a duct and a supporting member can be suppressed.

  In the above-described vehicle seat, the duct may be disposed below the seat cushion and extend in the front-rear direction, and may have a wide portion in which the horizontal dimension is larger than the vertical dimension.

  According to this, since the wide part arrange | positioned under a seat cushion has the small dimension of an up-down direction, it can be thinned up and down. Thereby, the vehicle seat can be made compact in the vertical direction.

  In the vehicle seat described above, the pair of side frames includes a pair of cushion side frames constituting left and right frames of the seat cushion, and the vehicle seat is disposed between the pair of cushion side frames, A support member that receives a load from the support member, and the wide portion is disposed below the support member at a position closer to the one side frame than the center in the left-right direction of the pair of side frames; can do.

  According to this, when the support member receives a load from the occupant, the center portion of the seat cushion bends more than the left and right end portions, but the wide portion is disposed at a position close to one side frame. Thereby, interference with a duct and a supporting member can be suppressed.

  In the vehicle seat described above, the retracting portion has a narrow portion whose left-right dimension is smaller than a dimension perpendicular to the left-right direction, and the duct is a connection that connects the narrow portion and the wide portion. The connecting portion may have a configuration in which a dimension in the left-right direction increases and a dimension in the vertical direction decreases as it goes from the narrow portion to the wide portion.

  According to this, since the sectional shape of the duct gradually changes from the narrow part toward the wide part, the rigidity of the duct can be improved compared to the case where the sectional shape does not change. Moreover, since it can suppress that the flow-path cross-sectional area of a duct becomes small in a connection part, the flow volume of the air which flows through the inside of a duct is securable. In addition, since the narrow portion has a shape that is strong against a load from a direction orthogonal to the left-right direction, even when the foot of a passenger in the rear seat hits the narrow portion, deformation of the duct can be suppressed. .

  The vehicle seat described above is disposed between the pair of side frames and includes a support member that receives a load from an occupant, and the duct has a portion that is disposed on the opposite side of the support member from the occupant side. The support member has a plurality of arranged wire members and a resin member that connects the wire members, and the resin member is disposed so as to overlap the duct when viewed from the passenger side. It can be.

  According to this, even if the support member bends and interferes with the duct, the resin member first comes into contact with the duct. Therefore, the influence of the contact between the duct and the support member, for example, generation of sound or The impact at the time of contact can be reduced.

  In the vehicle seat described above, the duct has a lower pipe portion disposed below the seat cushion, the lower pipe portion extends in the front-rear direction, and a front end is connected to the blower. A first portion; a second portion extending obliquely rearward from the rear end of the first portion toward the laterally outer side; a third portion extending rearward from the rear end of the second portion; and upward from the third portion. It can be set as the structure which has a branch pipe part extended and connected to the ventilation path formed in the said seat cushion.

  According to this, since the branch pipe portion can be provided at a position, for example, avoiding a wire member, disposed in the seat cushion, the air passage formed in the seat cushion and the duct can be easily connected. it can.

  In the vehicle seat described above, the lower pipe portion includes a fourth portion extending obliquely rearward from the rear end of the third portion toward the laterally outer side, and a fifth portion extending rearward from the rear end of the fourth portion. It can be set as the structure which has a part.

  According to this, since the duct can be arranged so as to gradually approach one side frame, a rapid change in the flow path can be suppressed, and air can be flowed well in the duct.

  ADVANTAGE OF THE INVENTION According to this invention, it can suppress that the passenger | crew's foot | leg of a backseat hits a duct. In addition, the vehicle seat can be made compact.

  Moreover, according to this invention, it can suppress more that the passenger | crew's foot | leg of a backseat hits a duct by extending so that a retracting part may be located ahead as it goes below.

  Moreover, according to this invention, interference with a duct and a supporting member can be suppressed by having a lower side inclination part extended so that a duct may be located below as it goes back on the lower side of a supporting member.

  Moreover, according to this invention, a vehicle seat can be compactized because a duct has a wide part under a seat cushion.

  Moreover, according to this invention, interference with a duct and a supporting member can be suppressed because the wide part is arrange | positioned in the position below one side frame rather than the center of the left-right direction below a supporting member. .

  Moreover, according to this invention, the duct can improve the rigidity of a duct because it has a wide part, a narrow part, and a connection part. Moreover, the flow rate of the air flowing through the duct can be ensured. Further, deformation of the duct can be suppressed.

  Moreover, according to this invention, since the resin member of a support member is arrange | positioned so that it may overlap with a duct seeing from a passenger | crew side, the influence by a duct and a support member contacting can be reduced.

  Further, according to the present invention, the lower pipe portion of the duct has the first portion, the second portion, the third portion, and the branch pipe portion extending from the third portion, so that the air passage and the duct formed in the seat cushion are provided. Can be easily connected.

  Moreover, according to this invention, air can be favorably flowed in a duct because a lower side pipe part further has a 4th part and a 5th part.

It is a figure which shows the vehicle seat as a vehicle seat which concerns on embodiment. It is sectional drawing of the vehicle seat. It is a figure which shows a seat frame, a supporting member, and a pressure receiving member. It is the figure which looked at the seat cushion from the top. It is the figure which looked at the back frame and the pressure receiving member from the front. It is a figure which shows a duct. It is the figure which looked at the cushion frame, the supporting member, the air blower, and the duct from the bottom. It is the figure which looked at the back frame, the pressure receiving member, and the duct from back. It is the figure which looked at the back frame with which the cover member was attached from back. It is the perspective view which looked at the side frame cover from the left-right direction inner side. It is the perspective view which looked at the side frame cover from the left-right direction outer side. It is a figure which shows the structure of a cushion pad. It is the figure which looked at the cushion pad from the top. It is a figure which shows the structure of a back pad. It is the figure which looked at the back pad from the front. It is XX sectional drawing of FIG. It is a figure which shows the modification of a side frame cover. It is a figure which shows the modification of a pressure receiving member and a duct.

Hereinafter, an embodiment of the invention will be described with reference to the accompanying drawings. In 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, in the vehicle seat S, a seat frame F (see FIG. 3) constituting a seat frame is covered with a pad P made of urethane foam or the like and skins U1 and U2 made of fabric or leather. It is composed of that. Although the details will be described later, the pad P includes air passages A1 and A2 formed therein, and first air holes H1 and H2 formed so as to communicate with the air passages A1 and A2 from the surface on the passenger side. 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 toward the passenger sitting on the seat through the first air holes H1 and H2. Has been.

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

The cushion frame F1 includes a pair of left and right cushion side frames 11, a pan frame 12 as a front frame, a rear pipe 13 as a rear frame, and a front pipe 14 (see FIG. 4) as a connection pipe.
The pair of 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 a plate-like member that connects the front portions of the pair of cushion side frames 11 and is made of sheet metal. The left and right end portions of the pan frame 12 are connected to the front end portion of the cushion side frame 11 by welding.
As shown in FIG. 4, the rear pipe 13 and the front pipe 14 are made of a metal pipe material, are arranged apart from each other in the front-rear direction, and are provided so as to connect the pair of cushion side frames 11. Specifically, the rear pipe 13 is disposed behind the pan frame 12 so as to be separated from the pan frame 12 and connects the rear portions of the pair of cushion side frames 11. Further, the front pipe 14 is disposed in front of the rear pipe 13 so as to be separated from the rear pipe 13 and connects the front portions of the pair of cushion side frames 11. The front pipe 14 is disposed below the pan frame 12.

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

The wire member 31 is made of a metal wire, and is installed on the pan frame 12 and the rear pipe 13. The wire member 31 mainly includes a first extending portion 31A, a second extending portion 31B, and a rear side latching portion 31C as a latching portion.
The first extending portion 31A extends in the front-rear direction while being alternately bent in the left-right direction. The front end of the first extending portion 31 </ b> A is a front side hook portion 31 </ b> D that is hooked on the hook portion 12 </ b> H formed on the pan frame 12. The front end portion of the first extending portion 31A including the front side latching portion 31D is covered with resin, thereby suppressing the generation of sound due to the contact between the wire member 31 (support member 30) and the pan frame 12. Yes.
The second extending portion 31B extends rearward and obliquely upward from the rear end of the first extending portion 31A.
31 C of rear side latching parts are parts latched by the rear pipe 13, and are curving so that it may extend from the upper end of the 2nd extension part 31B, and may make a substantially circular arc shape.
The support member 30 includes four wire members 31, and the four wire members 31 are arranged in the left-right direction.

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

The first resin member 32A connects the vicinity of the central portion of the four wire members 31 in the front-rear direction.
The second resin member 32B is disposed behind the first resin member 32A and connects the vicinity of the central portion in the front-rear direction of the two wire members 31 disposed at the center in the left-right direction.
The third resin member 32C is disposed on both left and right sides of the second resin member 32B, and a portion extending in the left and right direction of the first extending portion 31A of the wire member 31 disposed on the outer side in the left and right direction and the outer side in the left and right direction of the portion A portion extending rearward from the end of the frame is connected.
The resin members 32 </ b> A to 32 </ b> C are formed with substantially rectangular through holes (not shown) penetrating vertically. The support member 30 is configured to be able to hold a member such as a wire harness by engaging a clip or the like for fastening the wire harness into the through hole.

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

As shown in FIG. 5, the back frame F <b> 2 includes a pair of left and right sheet metal frames 22, a pipe frame 23, a lower frame 24 as a connection frame, and a bridge frame 25.
The pair of sheet metal frames 22 are spaced from each other while facing each other 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 a pair of left and right upper side frames 23A extending substantially vertically and an upper frame 23B extending so as to connect upper ends of the upper side frames 23A. The pair of upper side frames 23 </ b> A has a lower portion connected to an upper portion of the sheet metal frame 22 by welding, thereby constituting a pair of back side frames 21 together with the pair of sheet metal frames 22. The pair of back side frames 21 constitutes the left and right frames of the seat back S2. In this embodiment, “a pair of side frames” includes a pair of back side frames 21 and a pair of cushion side frames 11 of the cushion frame F1.

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

An S spring 40, a pressure receiving member 50, and a wire member 60 are arranged between the pair of back side frames 21 of the back frame F2.
The S spring 40 is formed by alternately bending a metal wire in the vertical direction. The S spring 40 is disposed above the lower frame 24 and is installed on the pair of backside frames 21. Specifically, the left and right end portions of the S spring 40 are connected to a pair of backside frames 21 by being inserted from above into a spring engaging portion 22A provided at the lower portion of the sheet metal frame 22. ing.

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

The wire member 60 is a member that connects the pressure receiving member 50 to the back frame F2, and mainly includes a pair of left and right extending portions 61, an inclined portion 62, an upper connecting portion 63, and a lower connecting portion 64. Yes.
The extending portion 61 extends in the up-down direction (orthogonal direction orthogonal to the left-right direction) as a predetermined direction, and is arranged side by side in the left-right direction (direction orthogonal to the predetermined direction).
The inclined portion 62 extends from the upper end of the extending portion 61 obliquely upward on the outer side in the left-right direction.
The upper connecting portion 63 extends upward from the upper end of the inclined portion 62.
The lower connecting portion 64 connects the pair of left and right extending portions 61, the inclined portion 62, and the upper connecting portion 63. Specifically, the lower connecting portion 64 has a lower end portion extending in the left-right direction, extending upward from the left and right ends of the lower end portion, and then bending and extending inward in the left-right direction. Connected to the bottom.

  In the wire member 60, the lower connecting portion 64 is fastened to the front side of the lower frame 24, and the upper connecting portion 63 is inserted into a support hole 25B (see FIG. 3) formed in the lower extension portion 25A of the bridging frame 25. Thus, it is connected to the back frame F2. The pressure receiving member 50 is disposed on the front side of the pair of extending portions 61 of the wire member 60, and is connected to the back frame F <b> 2 via the wire member 60 by being fastened to the extending portion 61 by a binding band (not shown). Yes. The pair of extending portions 61 are disposed at positions overlapping the pressure receiving member 50 when viewed from the front side.

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

  The duct D is a member that connects the air passages A1 and A2 formed on the pads P of the seat cushion S1 and the seat back S2 and the blower 70, and passes from the lower side of the seat cushion S1 to the rear side of the cushion frame F1. It extends toward the seat back S2. As shown in FIG. 6, the duct D includes a first duct D1 and a second duct D2 connected to the rear end portion of the first duct D1. And the 1st duct D1 has mainly the lower side pipe part 110, the connection part 120, and the 1st narrow part 131, and the 2nd duct D2 is the 2nd narrow part 132, and a flexible part. The bellows part 140, the first flat part 150, the second flat part 160, and the back connection part 170 are mainly included. In the present embodiment, the first narrow portion 131 and the second narrow portion 132 correspond to “narrow portions”.

  As shown in FIG. 7, the lower pipe portion 110 is a portion disposed on the lower side of the seat cushion S <b> 1, more specifically on the lower side of the support member 30, and extends substantially in the front-rear direction. The lower pipe part 110 includes a blower connection part 111 as a first part, a second part 112, a third part 113, a fourth part 114, a wide part 115 as a fifth part, and a branch pipe part As a cushion connection portion 116 (see also FIG. 6).

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

  As shown in FIG. 6, the cushion connection portion 116 is a portion connected to the air passage A <b> 1 formed in the seat cushion S <b> 1, and extends so as to protrude upward from the front end portion of the third portion 113. The cushion connection part 116 has a bellows part (reference numeral omitted), is flexible, and can be vertically expanded and contracted. As shown in FIG. 4, the duct D passes through the U-shaped portion of the wire member 31 in which the cushion connecting portion 116 is disposed second from the right, and is inserted into the air passage A1 from below the cushion pad P1 described later. By doing so, it is connected to the cushion pad P1. Since the cushion connection part 116 extends from the third portion 113 arranged at a position shifted to the right with respect to the blower connection part 111 (see FIG. 7), in this embodiment, the cushion connection part 116 is arranged in the seat cushion S1. The cushion connection part 116 can be provided at a position avoiding the wire member 31 and the like. Thereby, ventilation path A1 and duct D which were formed in seat cushion S1 can be connected easily.

  Moreover, in this embodiment, since the dimension of the left-right direction of the 3rd part 113 is larger than the dimension of the left-right direction of the air blower connection part 111 (refer FIG. 7), the cushion connection part extended from the 3rd part 113 The horizontal dimension of 116 can be increased. Thereby, since the flow path cross-sectional area of the cushion connection part 116 can be ensured, air can be flowed favorably between the duct D and the air passage A1 formed in the seat cushion S1.

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

  The wide portion 115 extends rearward from the rear end of the fourth portion 114. As shown in FIG. 6, the wide portion 115 has a horizontal dimension D11 larger than a vertical dimension D12. In other words, the wide part 115 has a flat cross-sectional shape in the vertical direction. In the present embodiment, not only the wide portion 115 but the entire lower tube portion 110 has a flat cross-sectional shape in the vertical direction. Since the lower tube portion 110 including the wide portion 115 disposed on the lower side of the seat cushion S1 has such a small vertical dimension, it can be thinned vertically. Thereby, the vehicle seat S can be made compact in the vertical direction.

  Returning to FIG. 7, the wide portion 115 is one cushion side frame 11 below the support member 30, more specifically than the center position in the left-right direction of the pair of cushion side frames 11 (see the alternate long and short dash line). It is disposed at a position close to the right cushion side frame 11. In other words, the wide portion 115 is disposed at a position close to the right cushion side frame 11. When the support member 30 receives a load from the occupant, the center portion of the seat cushion S1 is greatly bent below the left and right end portions, but the wide portion 115 is arranged at a position close to the right, Interference between the duct D and the support member 30 can be suppressed.

  As shown in FIG. 2, in the present embodiment, the fourth portion 114 and the wide portion 115 constitute a lower inclined portion 180. The lower inclined portion 180 extends in an inclined manner so as to be positioned downward as it goes backward as viewed from the left-right direction. Thereby, even if it is a case where a passenger | crew sits on a sheet | seat and the support member 30 bends down, interference with the duct D and the support member 30 can be suppressed.

  The 1st narrow part 131 and the 2nd narrow part 132 are parts arrange | positioned at the back of the cushion frame F1, and are extended substantially up and down. The second narrow portion 132 has inner front and rear and left and right dimensions slightly larger than the outer front and rear and left and right dimensions of the first narrow portion 131, and is fitted to the upper end of the first narrow portion 131. Match. Thereby, the 1st duct D1 and the 2nd duct D2 are connected. As shown in FIG. 6, the first narrow portion 131 and the second narrow portion 132 have a left-right dimension D21 smaller than a substantially front-rear dimension D22 orthogonal to the left-right direction. In other words, the first narrow portion 131 and the second narrow portion 132 have a flat cross-sectional shape on the left and right. In the present embodiment, not only the narrow portions 131 and 132 but also the bellows portion 140 has a flat cross-sectional shape on the left and right.

  The connection part 120 is a part that connects the first narrow part 131 (narrow part) and the wide part 115. The connection part 120 has a shape such that the dimension in the left-right direction gradually increases and the dimension in the vertical direction gradually decreases as it goes from the first narrow part 131 to the wide part 115. Thereby, since the cross-sectional shape of the duct D gradually changes from the first narrow portion 131 toward the wide portion 115, the rigidity of the duct D is improved as compared with the case where the cross-sectional shape does not change. Can do. Moreover, since it can suppress that the flow-path cross-sectional area of the duct D becomes small by the connection part 120, the flow volume of the air which flows through the inside of the duct D is securable.

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

  In the present embodiment, the first narrow part 131, the second narrow part 132, and the bellows part 140 constitute a retracting part 190. The evacuation part 190 is inclined and extended so as to be positioned forward as it goes downward. As shown in FIG. 8, the retracting portion 190 is disposed at a position on the inner side in the left-right direction of the pair of cushion side frames 11. Thereby, compared with the case where the retracting part 190 is disposed at a position on the outer side in the left-right direction of the pair of cushion side frames 11, the vehicle seat S can be made compact in the left-right direction. Further, the retracting portion 190 is disposed behind the cushion frame F1 at a position closer to the right (one) cushion side frame 11 than the center position in the left-right direction of the pair of cushion side frames 11 (see the dashed line). Yes. In other words, the retracting portion 190 is disposed at a position close to the right cushion side frame 11.

  Further, in the duct D, a retracting portion 190 that is a portion passing through the rear side of the rear pipe 13 is disposed at a position different in the left-right direction with respect to the rear hooking portion 31C of the wire member 31. Specifically, the retracting portion 190 is disposed on the right side of the rear side latching portion 31C located on the rightmost side. Moreover, the duct D is arrange | positioned in the position which is different in the left-right direction also with respect to the 2nd extension part 31B of the wire member 31 seeing from the rear side. Specifically, the retracting portion 190 and the wide portion 115 (see FIG. 7) are arranged on the right side of the second extending portion 31B located on the rightmost side as viewed from the rear side. Furthermore, in this embodiment, the retracting portion 190 and the wide portion 115 are arranged so as not to overlap the second extending portion 31B when viewed from any of the front and rear, left and right, and top and bottom directions. Thereby, even if a passenger | crew sits on a sheet | seat and the wire member 31 (support member 30) bends below, interference with the duct D and the wire member 31 can be suppressed.

  The first flat portion 150 extends obliquely upward from the upper end of the retracting portion 190 (the bellows portion 140) toward the center in the left-right direction of the pair of backside frames 21. The first flat portion 150 is disposed on the rear side of the lower frame 24. As shown in FIG. 6, the first flat portion 150 has a dimension D41 in the front-rear direction (a facing direction facing the lower frame 24) smaller than a dimension D42 in a substantially vertical direction orthogonal to the front-rear direction. In other words, the first flat portion 150 has a flat cross-sectional shape in the front-rear direction. Thereby, since the 1st flat part 150 can be made thin in the front-back direction, the vehicle seat S can be made compact in the front-back direction. In addition, since a gap can be secured between the first flat portion 150 and the lower frame 24 while achieving compactness, interference between the duct D and the lower frame 24 can be suppressed.

  Returning to FIG. 8, the second flat part 160 extends upward from the upper end of the first flat part 150. The second flat portion 160 is disposed on the rear side of the S spring 40 at the center in the left-right direction of the pair of backside frames 21. In the present embodiment, the second flat portion 160 and the first flat portion 150 have substantially the same size in the front-rear direction. The second flat portion 160 has a dimension D41 (see FIG. 6) in the front-rear direction (opposite direction facing the S spring 40) smaller than a dimension D43 in the left-right direction orthogonal to the front-rear direction. In other words, the second flat part 160 has a flat cross-sectional shape in the front-rear direction. Thereby, since the 2nd flat part 160 can be made thin in the front-back direction, the vehicle seat S can be made compact in the front-back direction. In addition, since a gap can be secured between the second flat portion 160 and the S spring 40 while achieving compactness, interference between the duct D and the S spring 40 can be suppressed.

  As shown in FIG. 2, the back connecting portion 170 is a portion connected to the air passage A <b> 2 formed in the seat back S <b> 2, and extends obliquely upward from the upper end of the second flat portion 160. The duct D is connected to the back pad P2 by the back connection part 170 being inserted into the air passage A2 from the rear side of the back pad P2 described later through the opening 50A formed in the pressure receiving member 50.

  As shown in FIG. 4, a known weight sensor WS as a sensor is disposed on one of the pair of cushion side frames 11, specifically, on the lower side of the left cushion side frame 11. In the present embodiment, the duct D has a right cushion side frame 11 that is the other of the pair of cushion side frames 11 rather than a left cushion side frame 11 that is one of the pair of cushion side frames 11 in the left-right direction. It is arranged near the position. In other words, the duct D is disposed at a position close to the cushion side frame 11 in which the weight sensor WS is not disposed in the left-right direction. Thereby, interference with the duct D, the weight sensor WS, the electric wire which is not illustrated extended from the said weight sensor WS, etc. can be suppressed.

  Moreover, the resin member 32 which comprises the supporting member 30 is arrange | positioned so that it may overlap with the duct D seeing from the upper side. Specifically, the first resin member 32A is disposed on the upper side of the third portion 113 so that the right side portion overlaps the third portion 113 of the duct D when viewed from the upper side. Further, the right third resin member 32C is disposed on the upper side of the wide portion 115 so as to overlap the wide portion 115 of the duct D when viewed from above. Further, the fourth resin member 32D is disposed on the upper side of the wide portion 115 so that the right end portion overlaps the wide portion 115 when viewed from above. Accordingly, even when the support member 30 bends downward and interferes with the duct D when the occupant sits on the seat, the resin members 32A, 32C, and 32D first come into contact with the duct D. It is possible to reduce the influence caused by the contact between D and the support member 30, for example, the generation of sound or the impact upon contact.

  Further, as shown in FIG. 7, in the present embodiment, the lower pipe portion 110 has the second portion 112 extending obliquely rearward to the right and approaching the right cushion side frame 11, and is substantially straight rearward at the third portion 113. After extending, the fourth portion 114 is provided so as to extend obliquely rearward to the right and further closer to the right cushion side frame 11, so that the duct D is disposed so as to gradually approach the right cushion side frame 11. Can do. Thereby, since the rapid change of the flow path in the duct D can be suppressed, air can be flowed favorably in the duct D.

  As shown in FIG. 9, a cover member 80 is disposed on the back frame F2. The cover member 80 is a member that covers the back connection portion 170, which is a portion where the duct D is connected to the air passage A2 of the seat back S2, from the rear side. The cover member 80 is formed in a plate shape that is long from left to right from resin or the like. The cover member 80 is fixedly attached to the left and right end portions of the rear end of the pair of backside frames 21 by bolt fastening or the like. By providing such a cover member 80, the cover member 80 can protect a portion where the duct D and the pad P (back pad P2) of the seat back S2 are connected.

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

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

  The reclining mechanism cover portion 93 is a portion that covers the reclining mechanism RL, and is formed in a substantially cup shape in which the inner side and the lower side in the left-right direction are opened. The reclining mechanism cover part 93 is formed so as to extend from the side frame cover part 91 along the circumferential surface of the reclining mechanism RL, and the reclining mechanism 93A covers the rear side, upper side, and front side of the reclining mechanism RL, and the reclining mechanism. It mainly has a second side cover portion 93B that covers the outer side of the RL in the left-right direction.

  The side frame cover portion 91, the duct cover portion 92, and the reclining mechanism cover portion 93 may be integrally formed as one component, or a part may be configured as a separate component. As an example, the duct cover portion 92 is formed integrally with the side frame cover portion 91 and the reclining mechanism cover portion 93 is formed as a separate body at the rear end portion of the side frame cover portion 91. By engaging the claw provided in the reclining mechanism cover part 93 with the provided hole, the reclining mechanism cover part 93 can be configured to be attached to the side frame cover part 91.

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

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

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

  The first member main body 230 has a main body central portion 231 that constitutes the central portion P11 together with the groove forming member 240 and the second member 220, and a pair of side portions P12 are formed on the left and right sides of the main body central portion 231. The main body central portion 231 has a concave portion 232 in which the groove forming member 240 and the second member 220 are arranged to overlap with each other on the front side portion. A second ventilation hole 250 penetrating vertically is formed at the rear end of the bottom surface of the recess 232. The second ventilation hole 250 communicates with the ventilation path A1 from the lower surface of the first member main body 230 (cushion pad P1). The duct D is connected to the cushion pad P <b> 1 by the cushion connecting portion 116 (see FIG. 6) being inserted into the second ventilation hole 250 from below. As shown in FIG. 13, the second vent hole 250 is disposed at a position shifted to the right from the center in the left-right direction (see the dashed line) of the cushion pad P1.

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

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

  In the present embodiment, two substantially U-shaped flow paths including the first air flow path 261, the second air flow path 262, and the third air flow path 263 are formed symmetrically with respect to the center in the left-right direction of the cushion pad P1. ing. As a result, the occupant can be supported in a well-balanced manner in the portion of the cushion pad P1 where the air passage A1 is not formed, so that the air passage A1 can connect the first air passage 261, the second air passage 262, and the third air passage 263. Even in the configuration including the above, it is possible to improve the sitting feeling when sitting on the seat.

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

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

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

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

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

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

  As shown in FIG. 14, the back pad P2 has a plate-like second member formed so that the first member 310 in which the groove 311 constituting the air passage A2 is formed and the first air hole H2 penetrates back and forth. The member 320 and the third member 330 are included. The second member 320 and the third member 330 are disposed so as to overlap the front surface of the first member 310. In the present embodiment, the back pad P2 corresponds to “a pad member covering the passenger side of the pressure receiving member”.

The first member 310 includes a bottomed groove 311 having a shape recessed toward the rear, and a second ventilation hole 350 penetrating in the front-rear direction.
In the ventilation path A2 of the back pad P2, the second member 320 and the third member 330 are disposed in front of the first member 310, and the front side of the groove 311 is closed by the second member 320 and the third member 330. It is formed by that. The ventilation path A2 includes a first path 361, a pair of second paths 362, a pair of third paths 363 as a pair of third ventilation paths, a pair of fourth paths 364 as a fourth ventilation path, and two A fifth path 365, a sixth path 366, a seventh path 367, and a pair of branch paths 368 as a first ventilation path are included.

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

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

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

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

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

  The second member 320 and the third member 330 have a plurality of first ventilation holes H2 (see FIG. 14) communicating with the ventilation path A2. The first ventilation hole H <b> 2 of the back pad P <b> 2 is formed in the first member 371, the second hole 372, the third hole 373, the fourth hole 374, the fifth hole 375 formed in the second member 320, and the third member 330. A sixth hole 376 formed.

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

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

As shown in FIG. 16, the branch path 368 has the end on the outer side in the left-right direction, which is one end, closed by the skin U2 by hanging the skin U2 in the hanging groove 380. The branch path 368 has a facing surface 368 </ b> A that faces the fifth hole 375. The facing surface 368 </ b> A is disposed at the outer end of the branch path 368 in the left-right direction. Specifically, the facing surface 368 </ b> A is disposed at a position on the outer side in the left-right direction with respect to the center position in the left-right direction of the branch path 368. The facing surface 368A is inclined so as to approach the front side as approaching the edge of the back pad P2, as viewed from the front side, specifically, the outer edge in the left-right direction. The facing surface 368 </ b> A is formed on the first member 310.
The second member 320 and the third member 330 (see FIG. 14) are fixed to the first member 310 with an adhesive or the like.

  Returning to FIG. 15, the air passage A <b> 2 is arranged so as to intersect the wire member 60 when viewed from the front side. Specifically, the second path 362 and the fourth path 364 extending obliquely are arranged so as to intersect with the extending portion 61 of the wire member 60 when viewed from the front side. Further, the fifth path 365 is arranged so that the left and right end portions intersect with the extending portion 61. On the other hand, the first path 361 and the third path 363 are arranged at positions different from the extending part 61 when viewed from the front side. Specifically, the first path 361 is disposed at a position on the inner side in the left-right direction of the extending part 61, and the third path 363 is disposed at a position on the outer side in the left-right direction of the extending part 61. In addition, the sixth path 366 is disposed at the inner side in the left-right direction of the inclined portion 62 of the wire member 60 and the lower end portion of the upper connecting portion 63, and the seventh path 367 is the left and right ends of the upper end portion of the upper connecting portion 63. It is arranged at a position inside the direction.

  The cushion pad P1 and the back pad P2 include the first members 210 and 310 in which the ventilation paths A1 and A2 are formed, and the second members 220 and 320 in which the first ventilation holes H1 and H2 are formed. Therefore, the pad P can be easily formed as compared with the case where the pads having the ventilation paths A1 and A2 and the first ventilation holes H1 and H2 are integrally formed. Furthermore, the cushion pad P1 having the ventilation path A1 including the ventilation paths 261 to 263 and the back pad P2 having the ventilation path A2 formed with the inclined facing surface 368A can be easily formed. Moreover, about the cushion pad P1, since the 1st member 210 is comprised from the 1st member main body 230 and the groove | channel formation member 240, it is the 1st which has the ventilation path A1 of the complicated shape containing the ventilation paths 261-263. The one member 210 can be easily formed. Thereby, cushion pad P1 can be formed more easily.

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

  In addition, since the duct cover portion 92 covers the bellows portion 140, it is possible to prevent the foot of the passenger in the rear seat from hitting the bellows portion 140, which is a soft portion of the duct D.

  In addition, since the bellows portion 140 is located above the lower end 13A of the rear pipe 13, compared to the case where the bellows portion is located below the lower end 13A of the rear pipe 13, the occupant's foot in the rear seat is placed in the duct D. It is possible to further suppress hitting the bellows portion 140.

  Further, since the narrow portions 131 and 132 have a small size (width) in the left-right direction, it is possible to prevent the foot of the passenger in the rear seat from hitting the narrow portions 131 and 132 of the duct D. Further, since the narrow portions 131 and 132 have small left and right dimensions, large front and rear dimensions, and a shape that is strong against loads from the front and rear directions, the occupant's feet in the rear seat are temporarily narrow portions. Even when hitting 131 and 132, deformation of the duct D and the like can be suppressed.

  Further, according to the present embodiment, as shown in FIG. 8, the retracting portion 190 of the duct D is arranged close to the right cushion side frame 11 at the rear portion of the seat cushion S1, so that the rear seat It is possible to prevent the occupant's feet from hitting the duct D.

  Further, since the retracting portion 190 extends so as to be positioned forward as it goes downward, the retracting portion 190 of the duct D is disposed at the rear portion of the seat cushion S1 so as to be separated from the foot of the passenger in the rear seat. Will be. Thereby, it can suppress more that a passenger | crew's foot | leg of a backseat hits the duct D more.

  In addition, according to the present embodiment, the back connecting portion 170 of the duct D can be connected to the air passage A2 formed in the back pad P2 through the opening 50A of the pressure receiving member 50, so that the vehicle seat S is plate-shaped. Even in the configuration including the pressure receiving member 50, the air passage A2 of the back pad P2 and the duct D can be easily connected.

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

  Further, according to the present embodiment, as shown in FIG. 13, the first vent hole H1 of the cushion pad P1 communicates with the first vent 271 communicating with the first vent path 261 and the third vent path 263. Since the second hole 272 is included, air can be passed through a wide area of the sheet surface. On the other hand, since the 1st ventilation path 261, the 2nd ventilation path 262, and the 3rd ventilation path 263 can be formed as a continuous flow path, the number of the flow paths connected to the air blower 70 can be reduced. Thereby, since it can suppress that the flow of air weakens in ventilation path A1, air can be flowed favorably in cushion pad P1.

  In addition, since the rows of the first holes 271A and the rows of the second holes 272 are arranged side by side in the left-right direction, air can be passed through a wider range of the seat surface, and a plurality of first ventilation holes H1 are provided. It can arrange efficiently.

  Further, since the fifth ventilation path 265 extends obliquely forward from the second ventilation hole 250 toward the center in the left-right direction and is connected to the fourth ventilation path 264, the fifth ventilation path 265 connecting the second ventilation hole 250 and the fourth ventilation path 264 is provided. There is no portion that bends rapidly in the air passage 265. As a result, the air flows from the second ventilation hole 250 to the fourth ventilation channel 264 through the fifth ventilation channel 265, and further through the first ventilation channel 261, the second ventilation channel 262, and the third ventilation channel 263 to the first. It can flow well to the vent hole H1.

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

  In addition, since the facing surface 368A is disposed at the end on the outer side in the left-right direction of the branch path 368, compared to the case where the facing surface is disposed in the middle of the long extending branch path 368, the facing surface for flowing air. The slope of 368A can be used effectively. Thereby, air can be flowed more favorably.

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

  In addition, the branch passage 368 extends obliquely upward on the outer side in the left-right direction so as to move away from the second ventilation hole 350, so that the air flowing in from the second ventilation hole 350 passes through the first passage 361 and the second passage 362 and is third. The flow from the path 363 to the branch path 368 can be satisfactorily performed.

As mentioned above, although one Embodiment of invention was described, this invention is not limited to the said embodiment. About a concrete structure, it can change suitably in the range which does not deviate from the meaning of invention as follows. In the following description, the same components as those in the above-described embodiment will be denoted by the same reference numerals, description thereof will be omitted as appropriate, and differences from the above-described embodiment will be described in detail.
For example, as shown in FIG. 17, in the side frame cover 90, the duct cover portion 92 has a rib-like convex portion 95 that protrudes from the inner surface toward the duct D, and the convex portion 95 is the accordion portion 140. It is good also as a structure which penetrates into a trough and engages. According to this, since the position of the duct D can be regulated by the engagement between the duct D and the convex portion 95 of the duct cover portion 92, the movement of the duct D can be suppressed.

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

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

  In the above embodiment, the pressure receiving member 50 is connected to the back frame F2 by one wire member 60. However, the present invention is not limited to this, and the pressure receiving member 50 may be connected to the back frame F2 by two wire members. Good. Moreover, in the said embodiment, although the one wire member 60 had a pair of extension part 61, when connecting the pressure receiving member 50 to the back frame F2 with two wire members, each wire member It is good also as a structure which has one extension part.

  Moreover, in the said embodiment, although the pressure receiving member 50 did not operate | move, it is not limited to this, For example, the pressure receiving member 50 moves to the front or back, or a passenger | crew is bent by bending ahead. It may be configured such that the support state of the occupant's waist can be changed by changing the shape of the portion that hits the waist. In this case, a pressure receiving member driving device such as an actuator for moving the pressure receiving member 50 will be described with reference to FIG. 8. One of the pair of back side frames 21, specifically, the left back side frame 21 is provided. It is desirable that they are arranged. Since the duct D is disposed in a position closer to the right (the other) back side frame 21 than the left (one) back side frame 21 in the left-right direction, The interference with the pressure receiving member driving device and the electric wire extending from the pressure receiving member driving device can be suppressed. Moreover, it is desirable that the pressure receiving member driving device is disposed on the inner side in the left-right direction of the pair of side frames. Thereby, the vehicle seat can be made compact in the left and right directions.

  Further, when the pressure receiving member driving device is arranged on the right back side frame 21 or the cushion side frame 11 and the position in the left-right direction overlaps the duct D, the pressure receiving member driving device is positioned in the front-rear direction or in the vertical direction. Is preferably different from duct D. For example, it is desirable to arrange the pressure receiving member driving device in front and after the duct D. According to this, interference with the duct D and a pressure receiving member drive device can be suppressed. Further, by disposing the duct on the lower side of the pressure receiving member driving device in the seat cushion and arranging the duct on the rear side of the pressure receiving member driving device in the seat back, interference between the duct and the pad can be suppressed. . When the pressure receiving member 50 moves back and forth, as shown in FIG. 17, it is desirable to provide a bellows portion 171 that expands and contracts back and forth at the rear end portion of the back connection portion 170. According to this, when the pressure receiving member 50 moves, it can suppress that the duct D remove | deviates from the back pad P2. Further, the pressure receiving member driving device is not limited to an actuator, and may be, for example, a control unit that controls the actuator.

  Moreover, in the said embodiment, although the side frame cover 90 was the structure which covers the rear-end part which is a part of cushion side frame 11, it is not limited to this, For example, it is the structure which covers the cushion side frame 11 whole. There may be. Further, for example, the duct cover portion 92 may be configured to cover only a part of the bellows portion 140 as the flexible portion, or may be configured to cover the whole.

  Moreover, in the said embodiment, as shown in FIG. 4, although the pan frame 12 as a pad support member was arrange | positioned so that the whole ventilation paths 261-263 might overlap, it is not limited to this. For example, referring to FIG. 4, the pan frame 12 is disposed so as to overlap the entire second air passage 262 and the front portions of the first air passage 261 and the third air passage 263 when viewed from above. It may be. In other words, the pad support member may be disposed so as to overlap at least a part of the first ventilation path, the second ventilation path, and the third ventilation path. The pad support member is not limited to a plate-like member such as the pan frame 12, and may be a member made of a pipe material, for example.

  In the above-described embodiment, a plurality of first holes 271 and second holes 272 serving as the first ventilation holes H1 are formed in the cushion pad P1, but the present invention is not limited to this. For example, a plurality of first holes are formed. And it is good also as a structure which has only the 2nd hole, and the reverse may be sufficient. In other words, it is sufficient that at least one of the first hole and the second hole is formed. Moreover, in the said embodiment, although the 2nd ventilation hole 250 of cushion pad P1 was arrange | positioned in the position shifted | deviated to the right from the center of the left-right direction, it is not limited to this, For example, it is left from the center of the left-right direction of cushion pad P1. It may be arranged at a position deviated from each other, or may be arranged at the center in the left-right direction. Moreover, in the said embodiment, although the two flow paths which consist of the ventilation paths 261-263 were formed, it is not limited to this, Three or more may be sufficient and one may be sufficient.

  Moreover, in the said embodiment, although the end of the branch path 368 (1st ventilation path) was closed, it is not limited to this, The structure which is not closed may be sufficient. In addition, a plurality of fifth holes 375 (first ventilation holes) communicating with the first ventilation path may be provided for each first ventilation path.

  Moreover, in the said embodiment, although the cushion pad P1 and the back pad P2 were comprised including the some member, it is not limited to this, For example, each pad may be comprised from 1 member.

  Moreover, in the said embodiment, although the duct D had the bellows part 140 as a flexible part, it is not limited to this, The structure will not be ask | required in particular if a flexible part has flexibility.

  Moreover, in the said embodiment, although what has the some wire member 31 and the resin member 32 which connects the wire member 31 was illustrated as a supporting member, it is not limited to this. For example, the support member may have a configuration in which substantially all of the plurality of wire members are covered and connected with a resin member (resin). Moreover, the structure which consists only of wire-shaped members, such as S spring, may be sufficient as a supporting member.

  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 1st ventilation hole H1, H2, it is not limited to this, For example, it is comprised so that air may be suck | inhaled from 1st ventilation hole. May be. 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.

  In the above-described embodiment, the weight sensor WS that detects the weight of the seat is exemplified as the sensor disposed on the lower side of the cushion side frame 11. However, the present invention is not limited to this, and for example, the front-rear position of the seat is detected. It may be a position sensor or the like.

  In addition, the same configuration as the frame or pad of the seat cushion S1 described in the embodiment may be applied to the seat back, or the same configuration as the frame or pad of the seat back S2 may be applied to the seat cushion. Also good. Moreover, in the said embodiment, although the ventilation path was formed in both the seat cushion and the seat back, it is not limited to this, Even if it is the structure formed only in either the seat cushion or the seat back Good.

  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 30 Support member 31 Wire member 32 Resin member 70 Air blower 110 Lower side pipe part 111 Air blower connection part 112 2nd part 113 3rd part 114 4th part 115 Wide part 116 Cushion connection part 120 Connection part 131 1st 1 narrow portion 132 second narrow portion 180 lower inclined portion 190 retracting portion A1, A2 air passage D duct S vehicle seat S1 seat cushion S2 seat back

Claims (9)

A vehicle seat comprising a seat cushion and a seat back,
A pair of side frames;
A duct extending from the seat cushion toward the seat back through the rear side of the frame of the seat cushion and connecting a ventilation path formed in at least one of the seat cushion and the seat back and a blower; Prepared,
The duct is disposed behind the seat cushion frame at a position on the inner side in the left-right direction of the pair of side frames and closer to one side frame than the center in the left-right direction of the pair of side frames. A vehicle seat comprising a retracting portion.   The vehicle seat according to claim 1, wherein the retracting portion extends so as to be positioned forward as it goes downward. The pair of side frames includes a pair of cushion side frames constituting left and right frames of the seat cushion,
A support member disposed between the pair of cushion side frames and receiving a load from an occupant;
The vehicle seat according to claim 1, wherein the duct has a lower inclined portion that is disposed on the lower side of the support member and extends so as to be positioned downward as it goes rearward.   4. The duct according to claim 1, wherein the duct is disposed on the lower side of the seat cushion and extends in the front-rear direction, and has a wide portion whose lateral dimension is larger than the vertical dimension. The vehicle seat according to the item. The pair of side frames includes a pair of cushion side frames constituting left and right frames of the seat cushion,
A support member disposed between the pair of cushion side frames and receiving a load from an occupant;
5. The vehicle according to claim 4, wherein the wide portion is disposed below the support member at a position closer to the one side frame than a center in a left-right direction of the pair of side frames. Sheet. The retracting portion has a narrow portion in which the dimension in the left-right direction is smaller than the dimension in the direction orthogonal to the left-right direction,
The duct has a connection part that connects the narrow part and the wide part,
The vehicle according to claim 4, wherein the connection portion has a lateral dimension that increases and a vertical dimension that decreases from the narrow portion toward the wide portion. Sheet. A support member disposed between the pair of side frames and receiving a load from an occupant;
The duct has a portion disposed on the side opposite to the passenger side of the support member,
The support member includes a plurality of arranged wire members and a resin member that connects the wire members,
The vehicle seat according to any one of claims 1 to 6, wherein the resin member is disposed so as to overlap with the duct as viewed from a passenger side. The duct has a lower pipe portion disposed on the lower side of the seat cushion,
The lower pipe part is
A first portion that extends back and forth and whose front end is connected to the blower;
A second portion extending obliquely rearward from the rear end of the first portion toward the outside in the left-right direction;
A third portion extending rearward from the rear end of the second portion;
8. The vehicle according to claim 1, further comprising a branch pipe portion that extends upward from the third portion and is connected to an air passage formed in the seat cushion. 9. Sheet. The lower pipe part is
A fourth portion extending obliquely rearward from the rear end of the third portion toward the outside in the left-right direction;
The vehicle seat according to claim 8, further comprising a fifth portion extending rearward from a rear end of the fourth portion.

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