JP2020157856A - Vehicle seat - Google Patents

Abstract

To inhibit a plate-like pressure receiving member and a duct from interfering to prevent one of the pressure receiving member and the duct from being worn.SOLUTION: A vehicle seat S includes: a seat cushion S1; a seat back S2; and a duct D which is disposed spanned between the seat cushion S1 and the seat back S2 and connects a blower with a ventilation passage formed in at least one of the seat cushion S1 and the seat back S2. The seat cushion S1 includes: left and right cushion side frames 11 forming left and right frames of the seat cushion S1; a rear frame (a rear pipe 13) which connects rear parts of the left and right cushion side frames 11; and a plate-like pressure receiving member (a pan frame 12) which engages with the rear frame. The duct D is disposed avoiding the pressure receiving member.SELECTED DRAWING: Figure 3

Description

The present invention relates to a vehicle seat.

Conventionally, there is known a vehicle seat provided with a duct extending from a blower device arranged under the seat cushion toward the seat back (see Patent Document 1). Specifically, in this technique, the seat cushion comprises a pressure receiving member that receives a load from an occupant sitting on the seat. The pressure receiving member is mainly composed of a plurality of wire members.

JP-A-2018-144517

However, in the prior art, the pressure receiving member is composed of a plurality of wire members, and it is not assumed that the pressure receiving member is a plate-shaped member. When the pressure receiving member is a plate-shaped member, the pressure receiving member and the duct easily interfere with each other, so that the pressure receiving member or the duct may be worn due to the interference between the pressure receiving member and the duct.

Therefore, an object of the present invention is to prevent the plate-shaped pressure receiving member and the duct from interfering with each other and causing the pressure receiving member or the duct to wear.

In order to solve the above-mentioned problems, the vehicle seat according to the present invention is arranged so as to straddle the seat cushion, the seat back, the seat cushion and the seat back, and the blower, the seat cushion and the seat. It is provided with a duct for connecting a ventilation path formed in at least one of the backs.
The seat cushion includes left and right cushion side frames that form the left and right frames of the seat cushion, a rear frame that connects the rear portions of the left and right cushion side frames, and a plate-shaped pressure receiving member that engages with the rear frame. And.
The duct is arranged so as to avoid the pressure receiving member.

According to this configuration, since the duct is arranged so as to avoid the pressure receiving member, it is possible to prevent the pressure receiving member and the duct from interfering with each other and wearing the pressure receiving member or the duct.

Further, the duct may be arranged between the rear frame and the pressure receiving member.

According to this, the duct can be arranged compactly by using the space between the rear frame and the pressure receiving member.

Further, the duct may be arranged between the pressure receiving member and the cushion side frame.

According to this, even if the foot of the seated person sitting on the seat behind the vehicle seat hits the pressure receiving member, the duct is not affected, so that the duct can be prevented from being kicked and damaged by the seated person's foot. it can.

Further, the duct may be in contact with the pressure receiving member.

According to this, when the duct comes into contact with the pressure receiving member, the position of the duct with respect to the pressure receiving member can be determined.

Further, the duct may be fixed to the pressure receiving member.

According to this, the duct can be supported by the pressure receiving member.

Further, the duct may be in contact with the rear frame.

According to this, the position of the duct with respect to the rear frame can be determined by contacting the duct with the rear frame.

Further, the vehicle seat further includes a harness attached to the seat back, the harness passes between one of the cushion side frames and the pressure receiving member, and the duct is the other cushion side frame and the said. It may pass between the pressure receiving members.

According to this, it is possible to prevent the duct from getting in the way when handling the harness.

Further, the vehicle seat may further include a harness attached to the seat back, and the harness may be in contact with the duct.

According to this, the harness can be supported by the duct.

Further, the harness may be fixed to the duct.

According to this, the harness can be better supported by the duct.

Further, the vehicle seat may include a frame member constituting the seat cushion or the frame of the seat back, a pad covering the frame member, and a skin covering the pad.

According to the present invention, it is possible to prevent the plate-shaped pressure receiving member and the duct from interfering with each other and causing the pressure receiving member or the duct to wear.

Further, since the duct is arranged between the rear frame and the pressure receiving member, the duct can be arranged compactly by using the space between the rear frame and the pressure receiving member.

In addition, since the duct is arranged between the pressure receiving member and the cushion side frame, even if the seated person's foot sitting on the seat behind the vehicle seat hits the pressure receiving member, the duct is not affected, so that the seated person's foot It is possible to prevent the duct from being kicked and damaged.

Further, when the duct comes into contact with the pressure receiving member, the position of the duct with respect to the pressure receiving member can be determined.

Further, by fixing the duct to the pressure receiving member, the duct can be supported by the pressure receiving member.

Further, when the duct comes into contact with the rear frame, the position of the duct with respect to the rear frame can be determined.

Further, the harness attached to the seat back passes between one cushion side frame and the pressure receiving member, and the duct passes between the other cushion side frame and the pressure receiving member, so that the duct interferes with the handling of the harness. Can be suppressed.

Further, when the harness attached to the seat back comes into contact with the duct, the harness can be supported by the duct.

Also, by fixing the harness to the duct, the duct can better support the harness.

It is a figure which shows the vehicle seat as the vehicle seat which concerns on 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 the figure which looked at the cushion frame, the blower and the duct from the bottom. It is a perspective view which shows the form which changed the position of a harness. It is a perspective view (a), (b) which shows the form which fixes a harness to a duct. It is a figure which shows the form which fixes the duct to a pan frame. It is a figure which shows the form which engages a duct with a pan frame. It is sectional drawing which shows the deformation example of the contact part with the rear pipe of a duct. FIG. 3A is a plan view showing a form in which an inner cover is provided, and FIG. 11B is a sectional view taken along line II of FIG. 11A. It is a figure which shows the form which the lower part of a duct is bifurcated. It is a figure which shows the form which passed the duct behind the rear pipe. It is a figure which shows the form which the duct is bifurcated behind the rear pipe. It is a figure which shows the form which formed the slit in the connection port with the duct of the back pad. It is sectional drawing which shows the form which connects the connection port of a duct and a cushion pad to the connector formed in the pan frame.

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. In this specification, front-back, left-right, and up-down are based on front-back, left-right, and up-down as seen from a 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, a seat back S2, and a headrest S3.

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

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 passage A1 formed inside and a plurality of ventilation holes H1 communicating with the ventilation passage A1 from the upper surface. Further, the back pad P2 has a ventilation passage A2 formed inside and a plurality of ventilation holes H2 communicating with the ventilation passage A2 from the front surface.

The ventilation passages A1 and A2 are connected to the blower 70 by a duct D described later. The blower 70 is a sirocco fan and is arranged under the pan frame 12 described later. The blower 70 is attached to the pan frame 12 via the bracket 71. The vehicle seat S is configured to blow out the air blown from the blower 70 from the ventilation holes H1 and H2 through the duct D and the ventilation passages A1 and A2 toward the occupant sitting on the seat.

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

The cushion frame F1 includes left and right cushion side frames 11, a pan frame 12 as a pressure receiving member, a rear pipe 13 as a rear frame, and a front pipe 14 (see FIG. 5). The left and right cushion side frames 11 are members that constitute the left and right frames of the seat cushion S1, and are arranged so as to face each other in the left-right direction. The cushion side frame 11 is made of sheet metal and is formed in a long shape that is long in the front-rear direction.

The pan frame 12 is a plate-shaped member that receives a load from an occupant sitting on the seat. The width of the pan frame 12 in the left-right direction is more than half the length of the rear pipe 13. The pan frame 12 is made of sheet metal and is supported by left and right cushion side frames 11, a rear pipe 13, and a front pipe 14. The structure of the pan frame 12 will be described in detail later.

As shown in FIG. 5, 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 and rear, and connect the left and right cushion side frames 11. Specifically, the rear pipe 13 connects the rear portions of the left and right cushion side frames 11, and the front pipe 14 connects the front portions of the left and right cushion side frames 11. The duct D is arranged to the right (one of the left and right directions) of the center (center surface CP) of the seat cushion S1 in the left and right direction.

As shown in FIG. 3, the back frame F2 includes left and right sheet metal frames 22, a pipe frame 23, a lower frame 24, and a crosslinked frame 25. The left and right sheet metal frames 22 are arranged so as to face each other in the left-right direction. The sheet metal frame 22 is made of sheet metal and is formed in a long shape that is long in the vertical direction.

The pipe frame 23 is made of a metal pipe material and has left and right upper side frames 23A extending substantially vertically and an upper frame 23B connecting the upper ends of the upper side frames 23A to each other. Since the lower part of the left and right upper side frames 23A is connected to the upper part of the sheet metal frame 22, the left and right backside frames 21 forming the left and right frames of the seat back S2 are formed together with the left and right sheet metal frames 22. There is. The lower frame 24 is made of sheet metal and connects the lower portions of the left and right back side frames 21 to each other. The crosslinked frame 25 is made of sheet metal and connects the upper portions of the left and right backside frames 21 to each other.

The rear portion of the cushion side frame 11 and the lower portion of the back side frame 21 are rotatably connected via a reclining mechanism RL. As a result, in the vehicle seat S, the seat back S2 can rotate back and forth with respect to the seat cushion S1.

The sheet metal frame 22 on the right side is provided with a motor bracket MB in which a motor for driving the reclining mechanism RL is built. The duct D may or may not be in contact with the motor bracket MB.

Further, a harness HN is attached to the seat back S2. The harness HN connects an electric component such as a motor for driving the reclining mechanism RL and a power source arranged outside the vehicle seat S. The plurality of harness HNs are routed so as to crawl the left side portion and the right side portion of the seat back S2 from top to bottom, and then bundled on the left side of the lower portion of the seat back S2 and extend downward.

The pan frame 12 has a front bottom wall W1, a central bottom wall W2, a rear bottom wall W3, a vertical wall W4, a flange W5, an inclined wall W6, and a rear wall W7. The front bottom wall W1 extends substantially horizontally and is arranged at the front portion of the cushion side frame 11.

The vertical wall W4 extends upward from the front end and the left and right ends of the front bottom wall W1. The flange W5 extends from the front, left and right vertical walls W4 toward the outside (direction away from the front bottom wall W1 in the horizontal direction). The flange W5 is joined to the front portion of the cushion side frame 11.

The central bottom wall W2 extends diagonally downward from the rear end of the front bottom wall W1. The central bottom wall W2 has a hole H3 through which a part of the duct D (fourth duct member 140 described later) passes through. Two holes H3 are arranged symmetrically with respect to the center in the left-right direction of the central bottom wall W2. In the present embodiment, since the duct D is arranged on the right side of the vehicle seat S, the hole H3 on the right side is used, but in the case of the type in which the duct D is arranged on the left side of the vehicle seat S, the left side is used. The hole H3 may be used.

The posterior bottom wall W3 extends rearward from the rear end of the central bottom wall W2. The posterior bottom wall W3 is arranged at a position corresponding to the buttocks of the occupant, and supports the buttocks of the occupant via the cushion pad P1 or the like.

Inclined walls W6 are provided on both the left and right sides of the rear bottom wall W3. The inclined wall W6 extends obliquely from the left end or the right end of the posterior bottom wall W3 toward the outer and upper sides in the left-right direction. The left and right inclined walls W6 are arranged at positions corresponding to the left and right side portions of the occupant's buttocks, and support the left and right side portions of the occupant's buttocks via cushion pads P1 and the like.

Each inclined wall W6 is gently connected to the central bottom wall W2 and the rear wall W7. Each inclined wall W6 is separated from the rear pipe 13 in the front-rear direction.

The rear wall W7 extends diagonally upward from the rear end of the rear bottom wall W3. The rear end portion of the rear wall W7 is formed in a hook shape along the outer peripheral surface of the rear pipe 13, and is engaged with the rear pipe 13 from above.

The width of the rear wall W7 in the left-right direction is smaller than the length of the rear pipe 13, and the rear wall W7 is arranged at the center of the rear pipe 13 in the left-right direction. As a result, the rear wall W7 is separated from the cushion side frame 11 in the left-right direction.

By constructing the pan frame 12 as described above, holes HR and HL that penetrate the cushion frame F1 in the vertical direction are formed on the left and right sides of the rear portion of the pan frame 12. Specifically, the holes HR and HL are formed by being surrounded by the rear end of the inclined wall W6, the right end or the left end of the rear wall W7, the rear pipe 13, and the cushion side frame 11.

A part of the duct D described later (a portion extending from the seat cushion S1 toward the seat back S2, specifically, a curved pipe portion 112 described later) passes through the hole HR on the right side. That is, the duct D is arranged so as to avoid the pan frame 12. In this embodiment, the curved pipe portion 112 of the duct D is not in contact with the pan frame 12. Further, the harness HN described above passes through the hole HL on the left side.

In other words, a part of the duct D is arranged between the rear pipe 13 and the inclined wall W6 on the right side of the pan frame 12. A part of the duct D is arranged between the cushion side frame 11 on the right side and the rear wall W7 of the pan frame 12. The harness HN is arranged between the cushion side frame 11 on the left side and the rear wall W7 of the pan frame 12. In this embodiment, a part of the duct D is not in contact with the pan frame 12 and the cushion side frame 11.

As shown in FIG. 2, the duct D is a member that connects the ventilation 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 parts. Specifically, as shown in FIG. 4, the duct D includes a first duct member 110, a second duct member 120, a third duct member 130, and a fourth duct member 140.

The first duct member 110 includes a lower pipe portion 111 extending substantially back and forth, a curved pipe portion 112 extending upward while being curved so as to be convex rearward from the rear end of the lower pipe portion 111, and an upper end of the curved pipe portion 112. It has a first connecting pipe portion 113 extending substantially upward. The front end of the lower pipe portion 111 is connected to the blower 70 (see FIG. 2).

The second duct member 120 is connected to the rear portion of the first duct member 110, and is provided so as to extend substantially vertically. The second duct member 120 is provided on the second connecting pipe portion 121, the first bellows portion 122 as a flexible portion provided on the second connecting pipe portion 121, and the first bellows portion 122. It has 3 connecting pipe portions 123. The second connecting pipe portion 121 is formed in a size such that the first connecting pipe portion 113 of the first duct member 110 fits inside. The first bellows portion 122 is flexible and stretchable.

The third duct member 130 is connected to the upper end of the second duct member 120. The third duct member 130 extends substantially vertically and vertically from the upper end of the fourth connecting pipe portion 131 and diagonally upward to the left (diagonally upward toward the center of the vehicle seat S in the left-right direction). 1 Upper pipe portion 132, a second upper pipe portion 133 extending from the upper end of the first upper pipe portion 132 toward the left (center of the vehicle seat S in the left-right direction), and substantially forward from the second upper pipe portion 133. It has a back connecting pipe portion 134 that extends. The fourth connecting pipe portion 131 is formed in a size that fits inside the third connecting pipe portion 123 of the second duct member 120. The back connection pipe portion 134 is connected to the ventilation path A2 whose front end is formed in the back pad P2 (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 connecting pipe portion 142 provided above the second bellows portion 141, and left and right connecting wall portions 143 provided below the second bellows portion 141. have. The second bellows portion 141 is flexible and stretchable. The cushion connecting pipe portion 142 is connected to the ventilation passage 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. In the present embodiment, the duct D is supported by the blower 70, the cushion pad P1 and the back pad P2 to which the duct D is connected, and is not fixed to the pan frame 12.

As shown in FIG. 2, the duct D is arranged so as to straddle 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 arranged on the seat cushion S1, the third duct member 130 is arranged on 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. The duct D is in contact with the rear pipe 13. The duct D does not have to be in contact with the rear pipe 13.

The vehicle seat S of the present embodiment configured as described above can achieve the following effects.
Since the duct D is arranged so as to avoid the pan frame 12, it is possible to prevent the pan frame 12 and the duct D from interfering with each other and wearing the pan frame 12 or the duct D.

Since the duct D is arranged between the rear pipe 13 and the pan frame 12, the duct D can be arranged compactly by using the space between the rear pipe 13 and the pan frame 12.

By arranging the duct D between the pan frame 12 and the cushion side frame 11, even if the foot of the seated person sitting on the seat behind the vehicle seat S hits the pan frame 12, the duct D is not affected. It is possible to prevent the duct D from being kicked and damaged by the seated person's foot.

Since the duct D is in contact with the rear pipe 13, the position of the duct D with respect to the rear pipe 13 can be determined.

Since the harness HN passes between one cushion side frame 11 and the pan frame 12, and the duct D passes between the other cushion side frame 11 and the pan frame 12, the duct D interferes with the handling of the harness HN. Can be suppressed.

Although the embodiment of the present invention has been described above, the present invention can be appropriately modified and implemented as shown in the other embodiments below.

In the above embodiment, the duct D is arranged on the right side of the rear wall W7 of the pan frame 12, and the harness HN is arranged on the left side, but the present invention is not limited thereto. For example, as shown in FIG. 6, the duct D and the harness HN may be arranged on the right side of the rear wall W7 of the pan frame 12, that is, on the same side in the left-right direction. In this case, the harness HN may be in contact with the duct D. According to this, the harness HN can be supported by the duct D.

Further, in this case, as shown in FIGS. 7A and 7B, the harness HN may be fixed to the duct D. According to this, the harness HN can be better supported by the duct D.

Specifically, in the form shown in FIG. 7A, the duct D has a recess D1 into which a part of the outer circumference of the harness HN is inserted. The depth of the recess D1 is smaller than the diameter of the harness HN. The harness HN is fixed to the duct D by a binding band BD with a part of the outer circumference inside the recess D1.

Further, in the form shown in FIG. 7B, the duct D has a projecting portion D3 projecting outward from a predetermined wall D2 constituting the duct D. The height of the protrusion D3 from the wall D2 is smaller than the diameter of the harness HN. Then, the harness HN is fixed to the duct D by the binding band BD in a state of being in contact with the wall D2 and the protruding portion D3.

In the above embodiment, the duct D is not fixed to the pan frame 12, but the present invention is not limited to this, and the duct D may be fixed to the pan frame 12. Specifically, as shown in FIG. 8, a hook D4 projecting upward is provided in a portion of the duct D arranged below the pan frame 12, and a hole H4 that engages with the hook D4 is provided in the pan frame 12. It may be provided. According to this form, the duct D can be well supported by the pan frame 12.

In the above embodiment, a part of the duct D (a portion extending from the seat cushion S1 toward the seat back S2, specifically, a curved pipe portion 112) is not in contact with the pan frame 12, but the present invention is limited to this. Not done. For example, as shown in FIG. 9, a part of the duct D may be in contact with the pan frame 12. Specifically, in this embodiment, the rear wall W7 of the pan frame 12 has two protrusions W8 that project outward in the left-right direction. The two protrusions W8 are arranged at intervals in the front-rear direction. A part of the duct D is arranged between the two protrusions W8 and is sandwiched between the two protrusions W8. According to this form, when a part of the duct D comes into contact with the pan frame 12, the position of a part of the duct D with respect to the pan frame 12 can be determined.

In the above embodiment, a part of the duct D is simply brought into contact with the rear pipe 13, but as shown in FIG. 10, a recess D5 is provided in a part of the duct D, and the recess D5 is formed on one of the outer circumferences of the rear pipe 13. You may put a part and make contact. The depth of the recess D5 may be smaller than the radius of the rear pipe 13, for example. According to this, it is possible to suppress that the recess D5 becomes a resistance of the air flow in the duct D.

As shown in FIG. 11A, the vehicle seat S may include an inner cover CV that covers the rear portion of the cushion side frame 11. In this case, a part of the duct D may be in contact with the inner cover CV. Further, as shown in FIG. 11B, a part of the duct D may be fixed to the inner cover CV. Specifically, the hook D6 may be provided in a part of the duct D, and the hole H5 that engages with the hook D6 may be provided in the inner cover CV.

As shown in FIG. 12, the duct D may be bifurcated under the pan frame 12. Specifically, in this embodiment, the first duct member 110 includes a first lower pipe portion 111A having substantially the same shape as the lower pipe portion 111 of the embodiment, and a rear wall W7 of the pan frame 12 from the first lower pipe portion 111A. It has a second lower pipe portion 111B extending toward the left side of the.

A curved pipe portion 112 similar to the above embodiment is connected to the rear ends of the lower pipe portions 111A and 111B, respectively. The right curved tube portion 112 extends upward through between the right cushion side frame 11 and the rear wall W7 of the pan frame 12, and the left curved tube portion 112 is the left cushion side frame 11 and the pan frame 12. It extends upward through between the rear walls W7.

Each of the curved pipe portions 112 is connected to a ventilation path formed in the back pad P2 via the first connecting pipe portion 113 and the third duct member 130, which are the same as those in the above embodiment. According to this form, the amount of air supplied to the ventilation path of the back pad P2 can be increased. The second lower pipe portion 111B may be connected to the ventilation path of the cushion pad P1 via the fourth duct member 140 similar to the above embodiment.

In the above embodiment, the duct D is configured to pass in front of the rear pipe 13, but the present invention is not limited to this, and as shown in FIG. 13, the duct D is configured to pass behind the rear pipe 13. You may. According to this, it is possible to prevent the duct D from interfering with the motor bracket MB (see FIG. 3).

Further, in the structure in which the duct D is passed behind the rear pipe 13, a part of the duct D (curved pipe portion 112) may be arranged in the center of the rear pipe 13 in the left-right direction as shown in FIG. That is, a part of the duct D may be configured to pass behind the rear wall W7 of the pan frame 12.

Further, in this case, the duct D may be bifurcated on the rear side of the rear pipe 13. Specifically, in this embodiment, the third duct member 230 includes a fourth connecting pipe portion 231 connected to the second duct member 120 and a first extending pipe portion 232 extending to the left from the fourth connecting pipe portion 231. It has a second extension pipe portion 233 extending to the right from the fourth connection pipe portion 231.

The ventilation passage A2 of the back pad P2 has a first opening A21 that opens downward on the left side of the back pad P2 and a second opening A22 that opens downward on the right side of the back pad P2. The end of the first extension pipe portion 232 extends upward and is connected to the first opening A21 from below. The end of the second extension pipe portion 233 extends upward and is connected to the second opening A22 from below.

Also in this form, the amount of air flowing through the ventilation path A2 of the back pad P2 can be increased. Further, in the structure in which the extension pipe portions 223 and 233 are connected to the openings A21 and A22 from below, it is not necessary to bend the upper portion of the duct D significantly in the front-rear direction as in the above embodiment, so that the vehicle seat S It is possible to improve the appearance of the duct D and reduce the pressure loss in the duct D.

As shown in FIG. 15, a slit SL may be formed at the connection port P21 of the back pad P2 with the duct D. As shown in the figure, for example, one slit SL can be provided on one side and one on the other side of the duct D. According to this, when the back pad P2 moves with respect to the duct D with the movement of the seat back S2, the connection port P21 can be easily deformed, so that the load on the duct D is suppressed. be able to. The slit may be provided at the connection port of the cushion pad with the duct.

As shown in FIG. 16, the pan frame 12 integrally has a first connector C1 connected to the duct D and a second connector C2 connected to the connection port P11 of the cushion pad P1 with the duct D. You may. In this form, the pan frame 12 is made of, for example, resin. Specifically, each of the connectors C1 and C2 is formed in a tubular shape so as to surround a hole H3 for passing air supplied from the duct D.

The first connector C1 projects downward from the lower surface of the pan frame 12. The second connector C2 projects upward from the upper surface of the pan frame 12. Further, a flange portion 144 extending outward is provided at the tip of the cushion connecting pipe portion 142 which is a connecting portion of the duct D to the first connector C1. The flange portion 144 is fixed to the pan frame 12 by the tapping screw TS.

In this embodiment, a part of the pan frame 12 is configured as a connector for connecting the cushion pad P1 and the duct D, so that the structure is simplified as compared with a structure in which the connector is a separate part from the pan frame 12, for example. can do.

The first connector and the second connector may be separate from the pan frame. That is, the first connector for connecting the hole of the pan frame and the duct and the second connector for connecting the first connector and the ventilation path of the cushion pad P1 may be configured as a separate part from the pan frame.

In the above embodiment, a part of the duct D (a portion extending from the seat cushion S1 toward the seat back S2) is passed through the outside of the outer edge of the pan frame 12 so as to avoid the pan frame 12, but the present invention. Is not limited to this. For example, a part of the duct D may be arranged so as to avoid the pan frame by passing through a hole formed in the pan frame.

In the above embodiment, the pan frame 12 is exemplified as the pressure receiving member, but the present invention is not limited thereto. For example, the pressure receiving member may be a member different from the pan frame. Specifically, for example, the vehicle seat may include a pan frame that supports the front portion of the cushion pad and a pressure receiving member that supports the rear portion of the cushion pad. In this case, the pressure receiving member may be made of resin. Further, the pressure receiving member may be engaged with the pan frame and the rear pipe.

The duct D may have a symmetrical shape with respect to the configuration described in the above embodiment. Further, the duct D may be configured not to have a curved portion (curved pipe portion 112), for example. Further, in the above-described embodiment, the duct D has the first bellows portion 122 as a flexible portion, but the present invention is not limited to this, and the flexible portion is not particularly limited as long as it has flexibility. Absent. Further, in the above-described embodiment, the duct D is formed by connecting a plurality of parts, but the present invention is not limited to this, and the duct D may be formed of a single part.

Further, in the above embodiment, the rear pipe 13 made of a pipe material is exemplified as the rear frame, but the present invention is not limited to this, and for example, the rear frame may be a plate-shaped frame made of sheet metal.

Further, in the above embodiment, the lower end portion (a part of the flexible portion) of the first bellows portion 122 is located between the cushion pad P1 and the back pad P2, but the present invention is not limited to this, and for example, the flexible portion The whole may be located between the cushion pad and the back pad. Further, as long as the seat back does not recline with respect to the seat cushion, a portion other than the flexible portion may be located between the cushion pad and the back pad. Further, the duct may be configured not to have a flexible portion.

Further, in the above embodiment, the sirocco fan is exemplified as the blower device 70, but the present invention is not limited to this, and for example, a propeller fan or a turbo fan may be used. Further, in the above embodiment, the vehicle seat S is configured to blow out air from the ventilation holes H1 and H2, but the present invention is not limited to this, and for example, even if the vehicle seat S is configured to suck air from the ventilation holes. Good.

Further, the blower device may be one that can switch between blowing and suction by switching the rotation direction of the impeller, for example. Further, in the above-described embodiment, the vehicle seat S is provided with the blower 70, but the vehicle seat itself may not be provided with the blower. In other words, the blower may be provided on the vehicle body of the vehicle on which the vehicle seat is mounted. In this case, the vehicle seat may be configured such that the duct is connected to, for example, an air outlet or suction port provided in the vehicle body.

Further, in the above embodiment, the ventilation passage connected to the blower by the duct D is formed in both the seat cushion and the seat back, but the present invention is not limited to this, and only one of the seat cushion and the seat back is used. It may be a structure formed in.

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

In addition, each element described in the above-described embodiment and modification may be arbitrarily combined and implemented.

11 Cushion side frame 12 Pan frame 13 Rear pipe 70 Blower A1 Ventilation path A2 Ventilation path D Duct S Vehicle seat S1 Seat cushion S2 Seat back

Claims (10)

With a seat cushion
Seat back and
A vehicle seat that is arranged so as to straddle the seat cushion and the seat back, and includes a blower and a duct that connects a ventilation path formed in at least one of the seat cushion and the seat back.
The seat cushion
The left and right cushion side frames that form the left and right frames of the seat cushion,
A rear frame that connects the rear parts of the left and right cushion side frames, and
A plate-shaped pressure receiving member that engages with the rear frame is provided.
The duct is a vehicle seat characterized in that it is arranged so as to avoid the pressure receiving member. The vehicle seat according to claim 1, wherein the duct is arranged between the rear frame and the pressure receiving member. The vehicle seat according to claim 1 or 2, wherein the duct is arranged between the pressure receiving member and the cushion side frame. The vehicle seat according to any one of claims 1 to 3, wherein the duct comes into contact with the pressure receiving member. The vehicle seat according to any one of claims 1 to 4, wherein the duct is fixed to the pressure receiving member. The vehicle seat according to any one of claims 1 to 5, wherein the duct comes into contact with the rear frame. Further equipped with a harness attached to the seat back
The harness passes between one of the cushion side frames and the pressure receiving member.
The vehicle seat according to any one of claims 1 to 6, wherein the duct passes between the other cushion side frame and the pressure receiving member. Further equipped with a harness attached to the seat back
The vehicle seat according to any one of claims 1 to 6, wherein the harness is in contact with the duct. The vehicle seat according to claim 8, wherein the harness is fixed to the duct. With the frame member constituting the seat cushion or the frame of the seat back,
The pad covering the frame member and
The vehicle seat according to any one of claims 1 to 9, further comprising an epidermis covering the pad.

Images