JP7795445B2 - Vehicle seats - Google Patents

Description

The present invention relates to a vehicle seat, and more particularly to a vehicle seat equipped with an air duct.

Vehicle seats are known that are equipped with a blower located below the seat cushion and a duct connecting the seat cushion and air passages formed in the seat back, and that can blow air that has been appropriately temperature-controlled toward the seated occupant from the blower. In other words, conventionally, temperature-controlled air has been blown toward the seated occupant to improve their comfort.

Patent document 1 describes a blower located below the seat cushion, a duct that bends from the seat cushion toward the seat back, and a duct cover for protecting the duct from the legs of passengers sitting in the rear seats.
Fig. 11 shows a duct cover described in Patent Document 1. As shown in Fig. 11, a duct 153 connected to a blower extends upward through the rear side of a rear connecting frame 134 that connects the rear ends of the left and right cushion side frames 131, and is arranged to connect to an air passage (not shown) formed in the seat back. Therefore, to prevent damage to the duct 153 caused by the feet of an occupant sitting in the rear seat coming into contact with a bent portion 153c of the duct 153 at the rear side of the seat cushion, the bent portion 153c has been covered with a cover member formed integrally with a reclining device cover portion 191.

Japanese Patent Application Laid-Open No. 2018-144517

The technology described in Patent Document 1 prevents the feet of passengers sitting in the rear seats from coming into contact with the duct 153, making it possible to protect the duct 153 that protrudes toward the rear seats. However, because the cover member was formed integrally with the reclining device cover portion 191 that protects the reclining device, the reclining device cover portion 191 tended to be large. This reduced the space available for passengers sitting in the rear seats to put their feet, and as a result, increased the chances that the feet of passengers sitting in the rear seats would come into contact with the duct or the cover member.

The present invention was made in consideration of the above-mentioned problems, and its purpose is to provide a vehicle seat that protects the duct extending toward the rear seats, while preventing the cover member disposed on the rear side of the seat cushion from becoming too large, and ensures sufficient legroom for passengers seated in the rear seats.

The above problem is solved by a vehicle seat of the present invention, which provides a vehicle seat comprising a seat body having a seat cushion and a seat back, and a duct through which air blown out from a blower passes, wherein the seat body has a seat frame that forms the skeleton of the seat body and a skin material that covers the seat frame, the duct extends across a rear portion of the seat cushion and a lower portion of the seat back, and has a rearward extension portion that extends rearward beyond the seat cushion, the skin material is provided with a duct protection member that covers and protects the rearward extension portion , and the duct protection member is provided only on a portion of the skin material that faces the rearward extension portion .

According to the above configuration, the duct protection member provided on the upholstery material protects the duct extending toward the rear seat, thereby protecting the duct from the feet of occupants. Furthermore, the duct protection member provided on the upholstery material can deform to follow the duct when the seat back is rotated by the reclining device and the duct deforms. Therefore, compared to when the duct cover portion is formed as a cover portion integrated with the reclining device cover portion, the size of the cover portion disposed on the rear side of the seat cushion can be reduced. This makes it possible to ensure sufficient leg space for occupants sitting in the rear seat.
Furthermore, according to the above configuration, the duct protection member is provided only in the portion facing the duct, so that it is possible to protect the duct from the feet of passengers sitting in the rear seats while preventing the vehicle seat from becoming larger and heavier.

The above problem is solved by the vehicle seat of the present invention, which provides a vehicle seat comprising a seat body having a seat cushion and a seat back, and a duct through which air blown out from a blower passes, wherein the seat body has a seat frame that forms the skeleton of the seat body and a skin material that covers the seat frame, the duct extends across a rear portion of the seat cushion and a lower portion of the seat back, and has a rearward extending portion that extends rearward beyond the seat cushion, the skin material is provided with a duct protection member that covers and protects the rearward extending portion, and the duct protection member is a plate-shaped member that is separate from the skin material and is sewn to the skin material.

The above problem is solved by the vehicle seat of the present invention, which provides a vehicle seat comprising a seat body having a seat cushion and a seat back, and a duct through which air blown out from a blower passes, wherein the seat body has a seat frame that forms the skeleton of the seat body and a skin material that covers the seat frame, the duct extends across a rear portion of the seat cushion and a lower portion of the seat back, and has a rearward extension portion that extends rearward beyond the seat cushion, the skin material is provided with a duct protection member that covers and protects the rearward extension portion, and the duct protection member has a rear wall that covers the rear side of the rearward extension portion.

The duct protection member may be provided on a surface of the skin facing the rearward extending portion.
According to the above configuration, the duct protection member is provided inside the skin material and is therefore not visible from the outside, which makes it possible to prevent the duct protection member from deteriorating the design of the vehicle seat.

The duct protection member may be sewn to the covering material along the entire periphery of the outer periphery of the duct protection member.
According to the above configuration, the outer peripheral portion of the duct protection member is sewn to the covering material along the entire periphery of the outer peripheral portion, which makes it possible to improve the adhesion (bonding) of the duct protection member to the covering material.

The duct protection member may be disposed on an end side of the seat cushion in the seat width direction, and the duct protection member may have an inner wall that covers the inside of the rearward extending portion in the seat width direction.
According to the above configuration, it is possible to reduce the impact on the duct when the feet of a passenger sitting in the rear seat come into contact with the duct from the inside in the seat width direction, thereby efficiently protecting the duct.

The duct protection member may have an outer wall that covers the outer side of the rearward extending portion in the seat width direction.
According to the above configuration, it is possible to reduce the impact on the duct when the feet of a passenger sitting in the rear seat come into contact with the duct from the outside in the seat width direction, thereby efficiently protecting the duct.

In addition, the vehicle seat may be provided with an air blowing device disposed below the seat cushion and having the blower and the duct, and the duct may extend rearward below the seat cushion and turn upward at the rear extension portion to extend toward the seat back.
According to the above configuration, the blower device is arranged below the seat cushion, so that the air flow emitted by the blower device can be blown onto the seated occupant while ensuring seating space for the occupant, thereby improving the comfort of the occupant.

According to the present invention, it is possible to protect the duct extending toward the rear seat, while preventing the cover member arranged on the rear side of the seat cushion from becoming too large, thereby ensuring space for the feet of passengers sitting in the rear seat.
Furthermore, it is possible to prevent the duct protection member from deteriorating the design of the vehicle seat.
Furthermore, it is possible to prevent the vehicle seat from becoming larger and heavier while protecting the duct.
Furthermore, it is possible to improve the fixation of the duct protection member to the flexible skin material.
In addition, it is possible to reduce the impact on the duct when the feet of a passenger sitting in the rear seat come into contact with the rear of the duct, thereby efficiently protecting the duct.
In addition, it is possible to reduce the impact on the duct when the feet of a passenger sitting in the rear seat come into contact with the inside of the duct in the seat width direction, thereby efficiently protecting the duct.
In addition, it is possible to reduce the impact on the duct when the feet of a passenger sitting in the rear seat come into contact with the outer side of the duct in the seat width direction, thereby efficiently protecting the duct.
Also, it is possible to improve the comfort of the occupant by blowing the airflow sent out by the blower onto the occupant while ensuring a seating space for the occupant.

1 is a perspective view of a vehicle seat according to an embodiment of the present invention; FIG. 2 is a perspective view of the padding, showing a state in which the air blower is assembled inside the seat body. FIG. 2 is a perspective view of the seat frame as seen from the rear. FIG. 10 is a bottom view of the cushion frame to which the blower device is attached. FIG. FIG. 4 is an enlarged view of a portion A of FIG. 3 . FIG. 10 is a diagram showing a duct covered with a skin material. FIG. FIG. 10 is an explanatory diagram of a rear plate sewn to the back surface of the skin material. FIG. 10 is a view showing a duct cover according to a modified example. FIG. 10 is a diagram showing a conventional duct cover.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will now be described with reference to FIGS.
This embodiment relates to a vehicle seat equipped with an air duct, and its main feature is that air blown out from a blower is sent to the seated occupant through the air duct, thereby improving the comfort of the occupant and protecting the duct from the legs of passengers in the rear seats.
The side of the vehicle seat where the occupant sits relative to the seat back is the front side of the seat.

<Overall Configuration of Vehicle Seat S>
The vehicle seat S of this embodiment is a vehicle seat, and as shown in Figures 1 to 3, its main components are a seat body Sh including a seat back 1, a seat cushion 2, and a headrest 3, and an air blower 50 that blows air toward the seated occupant.
The vehicle seat S further includes a rail device 70 that supports the seat body Sh so that it can move in the front-to-rear direction relative to the vehicle floor, and a reclining device 90 that rotatably connects the seat back 1 to the seat cushion 2.

The seat back 1 is constructed by placing a padding material 20 on a back frame 10 (see Figure 3) that forms the framework of the seat back 1, and then covering the padding material 20 with a cover material 1a. The seat back 1 has a seating surface that serves as a support surface for supporting the back of the seated occupant.

2, a first pad material 21 and a second pad material 22 are laminated on the seat back 1. The first pad material 21 and the second pad material 22 are made of a resin material such as foamed polypropylene.
The first pad material 21 is formed with a duct insertion hole 21a through which the duct 53 of the air blower 50 is inserted, and a concave air passage 21b that guides the air blown out from the duct insertion hole 21a.
The second pad material 22 has an air vent 22c formed therein, through which air guided by the air passage 21b is sent out toward the seated occupant.

The duct insertion hole 21a is located on the right side in the seat width direction. The air passage 21b is located so as to extend from the duct insertion hole 21a to the left in the seat width direction and in the vertical direction. This allows the air blown out by the air blower 50 to spread throughout the seat back 1 and be blown out through the air vent 22c toward the seat occupant.

The seat cushion 2 is primarily composed of a cushion frame 30 (see Figure 3) that forms the framework of the seat cushion 2, a padding material 40 that covers the cushion frame 30, and a cover material 2a. The seat cushion 2 is the seating portion that supports the seated occupant from below.

As shown in FIG. 2, the seat cushion 2 includes a first pad material 41 and a second pad material 42 laminated thereon.
The first pad material 41 has a duct insertion hole 41 a formed therein, through which a duct 53 of the air blower 50 is inserted.
2, a concave air passage 41b that guides the air blown out from the duct insertion hole 41a is formed on the back side of the second pad material 42. In addition, an air vent 42c is formed in the second pad material 42, and the air guided by the air passage 41b is sent out toward the seated occupant.

The duct insertion hole 41a is formed on the right side in the seat width direction. The air passage 41b is formed to extend from the duct insertion hole 41a to the left in the seat width direction and in the front-to-rear direction. This allows the air blown out by the air blower 50 to spread throughout the seat cushion 2 and be blown out toward the seat occupant through the air vent 42c.

<Outline of seat frame F>
The outline of the configuration of the seat frame F will be described with reference to FIG.
Fig. 3 shows a rear perspective view of the seat frame F. As shown in Fig. 3, the seat frame F is mainly composed of a back frame 10 and a cushion frame 30. The back frame 10 forms the framework of the backrest portion of the seat frame F, and the cushion frame 30 forms the framework of the sitting portion of the seat frame F.

<<Back frame 10>>
First, we will explain the back frame 10. As shown in Figure 3, the back frame 10 is configured in a frame shape by left and right back side frames 11 that are spaced apart and extend in the vertical direction, an upper frame 12 that connects the upper ends of the back side frames 11, and a lower frame 13 that connects the lower ends of the back side frames 11.

Above the back frame 10, a connecting frame 14 is interposed between the left and right ends of the upper frame 12. The connecting frame 14 is a long, plate-shaped member, and is connected to both ends of the upper frame 12 at both ends in the seat width direction.
A pressure-receiving member 16 is disposed below the connecting frame 14. The pressure-receiving member 16 is connected to the connecting frame 14 via a wire member 15. The pressure-receiving member 16 is a flexible plate member that supports the back of the seated occupant from behind. The pressure-receiving member 16 is made of resin, but is not limited to this. The pressure-receiving member 16 may also be made of metal.

The upper frame 12 is provided with a pillar support portion 17, to which a headrest pillar (not shown) is attached. The headrest 3 is formed by providing a padding member on the outside of the headrest pillar.

<<Cushion frame 30>>
Next, the cushion frame 30 will be described. As shown in Figures 3 and 4, the cushion frame 30 has a rectangular frame-like outer shape when viewed from below. The cushion frame 30 mainly includes cushion side frames 31 at the left and right ends in the seat width direction, a pan frame 32 located at the front end of the cushion frame 30, a rear connecting frame 34 connecting the left and right cushion side frames 31 at their rear ends, a front connecting frame 33 connecting the left and right cushion side frames 31 at their front ends, and a support member 35.

The left and right cushion side frames 31 are spaced apart in the left-right direction to define the width of the cushion frame 30, and extend in the front-to-rear direction. A rear connecting frame 34 is attached to the rear side of the cushion side frames 31, and the left and right cushion side frames 31 are connected at the rear by the rear connecting frame 34.

The pan frame 32 is a frame made of metal plate material and is primarily used to support the thighs of a seated occupant (passenger). The pan frame 32 is fixedly joined to the front sides of the left and right cushion side frames 31, connecting the left and right cushion side frames 31 at their front sides. More specifically, the left and right ends of the pan frame 32 are each fixed to a flange 31a provided on the cushion side frame 31 by a fixing means such as welding.

The support member 35 has its front end engaged with the front connecting frame 33 and its rear end engaged with the rear connecting frame 34. The support member 35 is a flexible plate member that can support the seated occupant by receiving the load from below. The support member 35 is made of resin, but is not limited to this. The support member 35 may also be made of metal.

<Rail device 70>
The rail device 70 is for moving the vehicle seat S in the front-to-rear direction, and is installed below the vehicle seat S (i.e., below the cushion frame 30). The rail device 70 is a typical slide rail device that uses the rotational force of a motor.

Specifically, the rail device 70 includes a lower rail 71, an upper rail 72, and a slide motor 73, as shown in Figures 3 and 4. The slide motor 73 shown in Figure 4 is attached to a motor mounting bracket 74, and the driving force of the slide motor 73 is used to move the upper rail 72 back and forth relative to the lower rail 71.

The lower rail 71 is a rail member fixed to the vehicle body floor surface below the vehicle seat S (strictly speaking, below the pan frame 32 of the cushion frame 30).
The upper rail 72 is a rail member that is fixed to the cushion frame 30 and is movable in the front-rear direction along the lower rail 71. The lower rail 71 and the upper rail 72 are provided at positions spaced apart from each other in the seat width direction.

<Reclining device 90>
The back frame 10 and the cushion frame 30 are connected via a reclining device 90. The reclining device 90 has a known configuration and supports the seat back 1 rotatably relative to the seat cushion 2.
The reclining device 90 is covered at both ends in the seat width direction by a reclining device cover portion 91, which is a resin cover member.

<Blower device 50>
Next, the blower device 50 will be described. As shown in Figures 3 and 4, the blower device 50 is disposed behind the seat back 1 and below the seat cushion 2. As shown in Figure 5, the blower device 50 is mainly composed of a mounting bracket 51, a blower 52, a duct 53, a first blowing section 54, and a second blowing section 55.

The mounting bracket 51 secures the blower 52 to the underside of the pan frame 32 so that it is positioned approximately in the center of the seat width direction. The mounting bracket 51 has multiple frame assembly parts for assembly to the underside of the pan frame 32. The frame assembly parts are arranged to surround the blower 52, and the mounting bracket 51 is attached to the underside of the pan frame 32 by tightening bolts from below.

Blower 52 is a propeller fan with rotating blades (not shown) that generate airflow by rotating the rotating blades. When the rotating blades arranged inside blower 52 rotate, air is sucked up from below, and the airflow generated by the centrifugal force of the rotating blades flows into duct 53 and is sent out toward first blowing section 54 and second blowing section 55. Blower 52 may also be a sirocco fan or turbo fan.

As shown in FIGS. 4 and 5, the duct 53 is a hollow member having a blower connecting portion 53a, a first extending portion 53b, a bent portion 53c, a second extending portion 53d, and a bent portion 53e.
The blower connecting portion 53a is connected to the blower 52 and is an air inlet through which air blown out by the blower 52 flows.

The first extension portion 53b extends below the seat cushion 2 to one side in the seat width direction (the right-hand side of the seated occupant) and to the rear side of the vehicle seat S. Positioning the first extension portion 53b on one side in the seat width direction can reduce interference with electrical components and electrical wiring arranged below the seat cushion 2. Furthermore, by bending the first extension portion 53b and gradually moving toward the right-hand side of the seated occupant, it is possible to guide the air blown out by the blower 52 toward the first blowing portion 54 and the second blowing portion 55 (described below) without impeding the flow of air.
The orthogonal cross section of the first extension portion 53b has a flat shape in which the horizontal dimension is greater than the vertical dimension, thereby positioning the first extension portion 53b below the front connecting frame 33, ensuring space below the vehicle seat S and preventing the first extension portion 53b from contacting the vehicle floor.

A first outlet section 54, which functions as a branch passage, is connected to the first extension section 53b. The first outlet section 54 extends upward and is inserted into a duct insertion hole 41a formed in the pad material 40 of the seat cushion 2. This allows some of the air blown out by the blower 52 to be blown out from below the seat cushion 2 toward the seated occupant via the air passage 41b formed in the pad material 40.

The bent portion 53c connects the first extension portion 53b and the second extension portion 53d, which extend in different directions. The bent portion 53c is located behind the seat occupant and on the end side (right hand side) in the seat width direction, and extends across the rear portion of the seat cushion 2 and the lower portion of the seat back 1. The bent portion 53c also extends rearward beyond the seat cushion 2. By positioning the bent portion 53c on one side in the seat width direction (the right hand side of the seat occupant), it is possible to prevent the feet of a passenger sitting in the rear seat from coming into contact with the bent portion 53c. Note that the bent portion 53c is covered by the upholstery material 2a and the rear plate 60, and is protected by the rear plate 60, as described below. The bent portion 53c corresponds to a rearward extension portion.

The bent portion 53c has a bellows structure with alternating peaks and valleys. By providing the bent portion 53c with a bellows structure, the strength of the duct 53 is maintained while improving its flexibility and deformability. This allows air traveling rearward through the first extension portion 53b to be redirected upward and smoothly guided to the second extension portion 53d. Furthermore, even when the seat back 1 is rotated relative to the seat cushion 2 by the reclining device 90, the bent portion 53c can flexibly deform to follow the seat back 1.

The second extension portion 53 d extends upward behind the seat back 1 and curves forward toward the duct insertion hole 21 a formed in the pad material 20 .
The orthogonal cross section of the second extension 53d has a flattened shape, which makes it possible to secure space behind the seat back 1 and to suppress interference between the second extension 53d and electrical wiring arranged behind the seat back 1.

The bent portion 53e is inserted into the duct insertion hole 21a formed to penetrate the pad material 20 of the seat back 1 in the front-to-rear direction, and is bent to one side in the seat width direction (toward the occupant's left hand side) to guide the airflow discharged by the blower 52 to the second outlet portion 55. By forming the bent portion 53e so that the second outlet portion 55 faces the occupant's left hand side, the direction in which the air passage 21b formed in the pad material 20 extends and the air outlet direction can be aligned. This allows the air discharged from the duct 53 to be smoothly guided toward the occupant. Furthermore, forming the bent portion 53e improves the fixation of the second outlet portion 55 to the pad material 20, making it possible to prevent the second outlet portion 55 from accidentally slipping out of the duct insertion hole 21a.

The bent portion 53e, like the bent portion 53c, has a bellows structure. By providing the bent portion 53e with a bellows structure, it is possible to improve the flexibility and deformability of the duct 53 while maintaining the strength of the duct 53. As a result, even if the weight of the seat occupant is applied to the seat back 1 and the pad material 20 deforms, the bent portion 53e deforms in response to the pad material 20, making it possible to displace the second outlet portion 55 to an appropriate position. Furthermore, by providing the bent portion 53e with a bellows structure, it is possible to reduce the discomfort felt by the seat occupant due to the presence of the second outlet portion 55 and to prevent damage to the duct 53.

<Rear plate 60>
Next, the rear plate 60 will be described. FIG. 6 is an enlarged view of portion A in FIG. 3 . As shown in FIG. 6 , the bent portion 53c of the duct 53 protrudes toward the rear seat below the vehicle seat S. Therefore, to prevent the feet of a passenger sitting in the rear seat from coming into contact with the bent portion 53c and damaging the duct 53, a conventional method has been to cover and protect the bent portion 53c with a cover member or the like. In this case, the cover member must have a size and shape that can cover the entire bent portion 53c even when the seat back 1 rotates due to the reclining device 90 and the bent portion 53c is deformed to extend. Furthermore, the conventional cover member is formed integrally with a reclining device cover portion 91 that protects the reclining device 90. These factors result in an increased size of the cover member, which reduces the legroom of passengers sitting in the rear seat.

In contrast, the vehicle seat S according to this embodiment has a rear plate 60 (see FIG. 8) provided on the cover material 2a that covers the vehicle seat S. More specifically, the rear plate 60 is provided on the surface of the cover material 2a that faces the bent portion 53c.
7 shows a state in which the lower bent portion 53c of the vehicle seat S is covered with the cover material 2a provided with the rear plate 60. The reference numeral 2a1 denotes an area (duct protection area) where the rear plate 60 is fixed to the inside of the cover material 2a (the surface side facing the bent portion 53c).

Figure 8 is an explanatory diagram of the rear plate 60 fixed to the upholstery material 2a, and is an enlarged partial cross-sectional view of a key portion of the vehicle seat S. As shown in Figure 8, the bent portion 53c, which extends across the rear portion of the cushion frame 30 and the lower portion of the seat back 1, extends further rearward than the seat cushion 2 and is covered by the upholstery material 2a. A rear plate 60 is fixed to the upholstery material 2a at a portion opposite the bent portion 53c.

The rear plate 60 is a plate-shaped member made of resin, and has the strength necessary to protect the bending portion 53c from impacts caused by the feet of a passenger sitting in the rear seat. The rear plate 60 is also flexible enough to deform to match the shape of the bending portion 53c. When the seat back is rotated by operating the reclining device 90 and the bending portion 53c is deformed, the rear plate 60 also deforms to follow the shape of the bending portion 53c. This allows the rear plate 60 to follow the shape of the bending portion 53c and effectively protect the bending portion 53c. The rear plate 60 corresponds to both a duct protection member and a rear wall.

As shown in FIG. 9, the rear plate 60 is fixed to the upholstery material 2a by stitching. Specifically, the rear plate 60 is sewn to the upholstery material 2a at stitching 61 provided around the entire periphery of the rear plate 60. As described above, since the upholstery material 2a is made of fabric, sewing the entire periphery of the rear plate 60 to the upholstery material 2a allows the rear plate 60 to be securely fixed to the upholstery material 2a without impairing the flexibility of the upholstery material 2a. However, the rear plate 60 may also be fixed to the upholstery material 2a with an adhesive.

The skin material 2a has a shape corresponding to the bent portion 53c and is formed with a storage portion 2a2 that can accommodate the bent portion 53c. The innermost portion of the storage portion 2a2 (the portion facing the rear side of the bent portion 53c) has an area (duct protection area 2a1) where the rear plate 60 is sewn and fixed (see Figures 7 and 8).

Although the bending portion 53c has been described as being protected by a rear plate 60 sewn to the inside of the skin material 2a, this is not limited to this. The bending portion 53c may also be protected by a laminate of multiple woven or nonwoven fabrics, or by thick cloth. Furthermore, the bending portion 53c may also be protected by providing an area in the skin material 2a where resin has been impregnated and hardened.

By providing the rear plate 60 on the flexibly deformable upholstery material 2a in this way, it is possible to prevent the reclining device cover portion 91 from becoming larger than when the duct cover is formed integrally with the reclining device cover portion 91. This makes it possible to effectively protect the duct 53 while ensuring sufficient legroom for passengers seated in the rear seats of the vehicle seat S. Furthermore, by providing the rear plate 60 only in the portion opposite the bent portion 53c of the duct 53, it is possible to protect the duct 53 in a more compact manner.

<Modification>
The configuration of a vehicle seat S according to one embodiment of the present invention has been described above, but the above-described embodiment is merely an example to facilitate understanding of the present invention and is not intended to limit the present invention. In other words, the present invention may be modified or improved without departing from the spirit thereof, and of course, the present invention also includes equivalents thereof.

With reference to Figure 10, a modified duct protection area 2a1 will be described. In the embodiment described above, the duct protection area 2a1 is provided with a rear plate 60 in the portion facing the bent portion 53c. In contrast, the modified duct protection area 2a1 is provided with an inner plate 62 and an outer plate 63 in addition to the rear plate 60.

The inner plate 62 covers the inner side of the bent portion 53c in the seat width direction, thereby protecting the inner side of the bent portion 53c in the seat width direction. The inner plate 62 is formed integrally with the rear plate 60. By providing the inner plate 62, it is possible to protect the duct 53 when the legs of an occupant sitting in the rear seat come into contact with the bent portion 53c from the inner side in the seat width direction. The inner plate 62 corresponds to an inner wall.
The outer plate 63 covers the outer side of the bent portion 53c in the seat width direction, thereby protecting the outer side of the bent portion 53c in the seat width direction. The outer plate 63 is formed integrally with the rear plate 60. By providing the outer plate 63, it is possible to protect the duct 53 when the feet of an occupant sitting in the rear seat come into contact with the bent portion 53c from the outer side in the seat width direction. The outer plate 63 corresponds to an outer wall.

As shown in FIG. 10 , the inner plate 62 has a length dimension that is approximately equal to that of the rear plate 60. In contrast, the outer plate 63 has a length dimension that is smaller than that of the rear plate 60. By making the length dimension of the outer plate 63 smaller than that of the rear plate 60 and the inner plate 62, it is possible to protect the outer side of the duct 53 in the seat width direction while preventing the outer plate 63 from interfering with the reclining device cover portion 91.

In the above-described embodiment, the duct insertion holes 21a and ventilation passages 21b are formed in the pad material 20 of the seat back 1, and the duct insertion holes 41a and ventilation passages 41b are also formed in the pad material 40 of the seat cushion 2. However, this is not limited to this. The duct insertion holes 21a and ventilation passages 21b may be formed only in the pad material 20 of the seat back 1.

In the above-described embodiment, a vehicle seat S used in an automobile was used as an example of a vehicle seat, but the present invention is not limited to this and can also be applied to other vehicle seats, such as seats used in ships and aircraft.

DESCRIPTION OF SYMBOLS S Vehicle seat Sh Seat body F Seat frame 1 Seat back 1a Covering material 2 Seat cushion 2a Covering material 2a1 Duct protection area 2a2 Storage section 3 Headrest 10 Back frame 11 Back side frame 12 Upper frame 13 Lower frame 14 Connecting frame 15 Wire member 16 Pressure-receiving member 17 Pillar support section 20 Pad material 21 First pad material 21a Duct insertion hole 21b Air passage 22 Second pad material 22c Air vent 30 Cushion frame 31, 131 Cushion side frame 31a Flange 32 Pan frame 33 Front connecting frame 34, 134 Rear connecting frame 35 Support member 40 Pad material 41 First pad material 41a Duct insertion hole 41b Air passage 42 Second pad material 42c Air vent 50 Blower device 51 Mounting bracket 52 Blower 53, 153 Duct 53a Blower connection portion 53b First extension portion 53c, 153c Bent portion (rear extension portion)
53d Second extending portion 53e Bending portion 54 First blowing portion 55 Second blowing portion 60 Rear plate (duct protection member, rear wall)
61 seam portion 62 inner plate (inner wall)
63 Outer plate (outer wall)
70 Rail device 71 Lower rail 72 Upper rail 73 Slide motor 74 Motor mounting bracket 90 Reclining device 91, 191 Reclining device cover

Claims (8)

A vehicle seat comprising: a seat body having a seat cushion and a seat back; and a duct through which air blown out from a blower passes,
The seat body has a seat frame that forms a skeleton of the seat body and a skin material that covers the seat frame,
the duct extends across a rear portion of the seat cushion and a lower portion of the seat back and has a rearward extending portion that extends rearward beyond the seat cushion,
the skin material is provided with a duct protection member that covers the rear extension portion and protects the rear extension portion ,
The vehicle seat , wherein the duct protection member is provided only on a portion of the covering material that faces the rearward extending portion . A vehicle seat comprising: a seat body having a seat cushion and a seat back; and a duct through which air blown out from a blower passes,
The seat body has a seat frame that forms a skeleton of the seat body and a skin material that covers the seat frame,
the duct extends across a rear portion of the seat cushion and a lower portion of the seat back and has a rearward extending portion that extends rearward beyond the seat cushion,
the skin material is provided with a duct protection member that covers the rear extension portion and protects the rear extension portion ,
The vehicle seat is characterized in that the duct protection member is a plate-like member separate from the covering material and is sewn to the covering material . A vehicle seat comprising: a seat body having a seat cushion and a seat back; and a duct through which air blown out from a blower passes,
The seat body has a seat frame that forms a skeleton of the seat body and a skin material that covers the seat frame,
the duct extends across a rear portion of the seat cushion and a lower portion of the seat back and has a rearward extending portion that extends rearward beyond the seat cushion,
the skin material is provided with a duct protection member that covers the rear extension portion and protects the rear extension portion ,
The vehicle seat according to claim 1, wherein the duct protection member has a rear wall that covers the rear side of the rear extension portion . 4. The vehicle seat according to claim 1 , wherein the duct protection member is provided on a surface of the covering material that faces the rearward extending portion. 3. The vehicle seat according to claim 2 , wherein the duct protection member is sewn to the covering material along the entire periphery of the duct protection member. the duct protection member is disposed on an end side of the seat cushion in a seat width direction,
The vehicle seat according to claim 3 , wherein the duct protection member has an inner wall that covers the inside of the rearward extending portion in the seat width direction. The vehicle seat according to claim 6 , wherein the duct protection member has an outer wall that covers the outer side of the rearward extending portion in the seat width direction. the vehicle seat includes an air blower disposed below the seat cushion and having the blower and the duct;
The vehicle seat according to any one of claims 1 to 3, characterized in that the duct extends rearward below the seat cushion, and then turns upward at the rearward extension portion and extends toward the seat back.