JP2023087068A - vehicle seat - Google Patents

Abstract

To provide a vehicle seat with a seat heater which does not provide discomfort to a seating person even when the seat heater is attached thereto.SOLUTION: A vehicle seat S includes a seat heater 40 between a cushioning material 2b and a surface cover material 2c, and a housing recessed part 24 for housing the seat heater 40 is formed at cushion side parts 21 located at left and right outer sides of the cushioning material 2b. Each housing recessed part 24 is disposed in a range, in which the cushion side part 21 contacts with the cushion frame 2a, in a seat width direction so as to be positioned at the inner side of an outer end portion of the range in the seat width direction.SELECTED DRAWING: Figure 2

Description

TECHNICAL FIELD The present invention relates to a vehicle seat, and more particularly to a vehicle seat provided with a seat heater.

2. Description of the Related Art Conventionally, a vehicle seat is known in which a seat heater is attached to a seat body to improve the comfort of a seated person.
An example of such a vehicle seat includes a seat body configured by placing a cushion material on a frame serving as a skeleton and covering the seat body with an upholstery material, and a seat heater is attached between the cushion material and the upholstery material. Some are known (see, for example, Patent Document 1).

In the vehicle seat with a seat heater disclosed in Patent Document 1, the seat heater includes a seat base material, a heater wire attached to the seat base material and connected to an electric wire, and a thermostat that adjusts the temperature of the heater wire. consists mainly of Seat heaters are attached to the seat back and the seat cushion, respectively.
Further, the heater wire has a first heater wire and a second heater wire that are arranged in parallel with each other. For example, the first heater wire is arranged in the main body portion of the seat back, and the second heater wire It is located in the bolster part on both sides of the back.

With the above configuration, when the thermostat is operating, only the first heater wire can be energized, and when the thermostat is stopped, the first heater and the second heater wire can be energized.
In addition, even if the second heater wires in the left and right bolster portions are deformed due to an external impact or the like, the first heater wires in the main body of the seat back have a heater function, so the entire seat back can be maintained. heating function is not lost.

WO2007/097445

By the way, in a vehicle seat with a seat heater as disclosed in Patent Document 1, since the seat heater is attached between the cushion material and the upholstery material, the seating surface of the seat back and the seat cushion is uneven, and the occupant feels uncomfortable. There was a possibility that it would give a sense of incongruity.
In general, for the center of the seat back and seat cushion in the seat width direction, a cotton-like wadding material is attached to the back surface of the upholstery material in order to improve the seating comfort of the occupant. In many cases, a relatively thin wadding material is attached, or no wadding material is attached at all.
Therefore, there is a possibility that the seated occupant may feel uncomfortable due to the influence of the installation of the seat heater, particularly in the side bolster portion.

In addition, in a vehicle seat with a seat heater as disclosed in Patent Document 1, at least a plurality of electric wires, a plurality of heater wires, and a thermostat are attached on the seat base material. If the connecting portion of the heater wire is deformed, there is a possibility that the heater function cannot be sufficiently maintained.
Furthermore, if the thermostat loses its function due to an external impact, there is a possibility that the temperature of the seat heater cannot be adjusted.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a vehicle seat with a seat heater that does not make the occupant feel uncomfortable even when the seat heater is attached. .
Another object of the present invention is to provide a vehicular seat with a seat heater that does not give the occupant a sense of discomfort, particularly in the side bolster portions.
Another object of the present invention is to provide a vehicular seat with a seat heater capable of suppressing deformation of the seat heater and sufficiently maintaining the heater function even when an impact is applied from the outside, for example. It is in.

According to the vehicle seat of the present invention, a cushion material is placed on a frame serving as a skeleton and covered with a skin material, and a seat heater is provided between the cushion material and the skin material. A vehicle seat, wherein the cushion material has a cushion main body portion located in a center portion in a seat width direction and cushion side portions located on left and right outer sides of the cushion main body portion, and the cushion side portions include: A storage recess for storing the seat heater is formed, and the storage recess is disposed within a range in the seat width direction where the cushion material is in contact with the frame, and outside the range in the seat width direction. is arranged so as to be located inside the end portion of the
As described above, since the storage recess for storing the seat heater is formed in the side portion of the cushion, the seating surface of the seat does not become uneven, and the seat occupant does not feel uncomfortable. A vehicle seat with a heater can be realized.
In particular, on the side of the cushion, a thin wadding material is generally attached to the back surface of the upholstery material, or no wadding material is attached in the first place. The effect of the invention becomes conspicuous.
Further, as described above, the storage recess is arranged in the range in the seat width direction in which the cushion material is in contact with the frame, and is positioned inside the outer end portion of the range in the seat width direction. Therefore, the portion in which the storage recess is formed is preferably supported by the frame, and excessive elastic deformation in this portion is suppressed. As a result, deformation of the seat heater is suppressed, and the heater function can be preferably maintained.

At this time, the frame has left and right side frame portions arranged laterally in the seat width direction, and the storage recess overlaps a portion of the side frame portion that protrudes most toward the cushion material. It is good if it is placed in the position.
With the above configuration, the portion of the cushion material in which the storage recess is formed is more preferably supported by the portion of the side frame portion having high support rigidity.

At this time, the cushion side portion is formed so as to protrude toward the upholstery material toward the outer side in the seat width direction, and the storage recess most projects toward the upholstery material among the cushion side portions. It is preferable that it is arranged on the inner side of the seat width direction than the portion.
With the above configuration, since the storage recess is formed in the cushion side portion so as to avoid the portion that protrudes most toward the seated person, deformation of the seat heater stored in the storage recess is further suppressed.

At this time, the seat heater preferably includes a sheet-shaped sheet base material and a heater wire attached to the sheet base material, and is provided so that the heater wire does not protrude from the storage recess.
In addition, the frame has left and right side frame portions arranged laterally in the seat width direction, and the heater wire is positioned inside the outer end portions of the side frame portions in the seat width direction. It is good if it is placed in
Further, it is preferable that the storage recess is formed so as to be deeper in the seat width direction from both end portions toward the center portion, and the heater wire is arranged at a position on the center portion side in the storage recess.
With the above configuration, deformation of the heater wire, which is important in the seat heater, is further suppressed.

At this time, the seat cushion and the seat back are connected to each other, and the storage recess is formed so as to extend along an extension direction orthogonal to the seat width direction of the cushion side portion. It is preferable that the width is formed so as to become wider as the distance from the connecting portion increases in the extension direction.
In general, the side bolster portion of the seat cushion has a front portion and a center portion of the seat, which are portions where the buttocks of the occupant are supported and where a seating load is applied.
Therefore, the front portion and center portion of the seat are desired to be suitably warmed by the seat heater, and are desired to suppress the deformation of the seat heater and suppress the influence of the seating comfort.
Therefore, with the configuration of the storage recess described above, it is possible to realize a suitable shape and arrangement of the seat heater and to suppress deformation of the seat heater. Moreover, the influence on a seating feeling can be suppressed.

At this time, it is preferable that the storage recesses are provided in the left and right cushion side portions and formed so as to be bilaterally symmetrical with respect to the cushion main body portion.
With the above configuration, it is possible to share the seat heaters (seat base materials) respectively arranged on the left and right cushion side portions.

At this time, it is preferable that the seat heater is attached by being adhered to the surface of the storage recess.
With the above configuration, the seat heater can be easily positioned and the assembly work can be facilitated.

At this time, the seat heater has a central heater portion arranged in the cushion body portion and a side heater portion arranged in the cushion side portion, and the central heater portion includes the cushion body portion. It is preferable that a positioning portion for arranging at a predetermined position is formed.
With the above configuration, the center heater portion is positioned by the positioning portion, and the side heater portion is positioned by the storage recess, so that the assembly work of the entire seat heater is facilitated.

At this time, the side heater section has a first side heater section and a second side heater section which are spaced apart from each other. It is preferable that a first housing recess, a second housing recess, and a connecting recess for connecting the first housing recess and the second housing recess are formed.
In general, a high-grade vehicle seat has a plurality of seat heaters attached to the side bolster portion, but with the above configuration, even if a plurality of seat heaters are attached, a good seating feeling is achieved and the deformation of the seat heater is achieved. can be suppressed.
Further, the formation of the connecting concave portion as described above facilitates the positioning of the seat heater.

At this time, there is provided a side support device capable of moving the cushion side portion between a predetermined position and a projected position where the cushion side portion is projected toward the upholstery from the predetermined position, and the storage recess is provided with the side support device. It is preferable that it is arranged in a position overlapping with
In general, of the side bolster portions, the portion supported by the side support device is the portion that comes into contact with the seated person most easily.
Therefore, this portion is a portion that is preferably warmed by the seat heater, and is a portion that is desired to suppress the deformation of the seat heater and suppress the influence of the seating comfort.
Therefore, by forming a storage recess in this portion, it is possible to suppress the deformation of the seat heater while ensuring the comfort of the seated person. Moreover, the influence on a seating feeling can be suppressed.

At this time, when the storage recess is moved to the protruded position, the storage recess is arranged at a position overlapping with the portion of the cushion side portion that most protrudes toward the upholstery, and in the portion that overlaps with the most protruding portion. It should be formed to be the deepest.
With the above configuration, in the vehicle seat provided with the side support device, the seat heater can be preferably assembled to the side bolster portion, and deformation of the seat heater can be suppressed.

According to the first aspect of the present invention, it is possible to realize a vehicle seat with a seat heater that does not cause unevenness on the seating surface of the seat and does not give a sense of discomfort to the seated person.
In particular, the effect of the present invention is more conspicuous in the cushion side portions, since the installation of the seat heater has a greater effect on the seating comfort.
In addition, the portion of the cushion material in which the storage recess is formed is preferably supported by the frame, and excessive elastic deformation in that portion is suppressed. As a result, deformation of the seat heater is suppressed, and the heater function can be favorably maintained.
According to the second aspect of the invention, the portion of the cushion material in which the storage recess is formed is more preferably supported by the portion of the side frame portion having high support rigidity.
According to the third aspect of the invention, deformation of the seat heater accommodated in the accommodation recess is further suppressed.

According to the inventions of claims 4, 5 and 6, the deformation of the heater wire, which is important in the seat heater, is further suppressed.
According to the seventh aspect of the present invention, the configuration of the storage recess makes it possible to realize a suitable shape and arrangement of the seat heater and to suppress deformation of the seat heater.
According to the eighth aspect of the invention, it is possible to share the seat heaters (seat base materials) respectively arranged on the left and right cushion side portions.

According to the ninth and tenth aspects of the present invention, the seat heater can be easily positioned, and the assembly work of the seat heater can be facilitated.
According to the eleventh aspect of the invention, even if a plurality of seat heaters are attached, a good seating feeling can be achieved and deformation of the seat heaters can be suppressed. Also, it becomes the positioning of the seat heater.
According to the twelfth aspect of the present invention, by forming the storage recess, it is possible to suppress deformation of the seat heater while ensuring the comfort of the seated person by the seat heater.
According to the thirteenth aspect of the invention, in the vehicle seat provided with the side support device, the seat heater can be preferably assembled to the side bolster portion, and deformation of the seat heater can be suppressed.

1 is a perspective view of a vehicle seat with a seat heater according to this embodiment; FIG. 2 is a cross-sectional view taken along line CC of FIG. 1; FIG. FIG. 10 is a plan view of the seat cushion, and is a diagram for explaining that the cushion material is formed with a storage recess. It is a top view of a seat heater. 5(a) is a cross-sectional view along line AA in FIG. 1, FIG. 5(b) is a cross-sectional view along line BB in FIG. 1, and FIG. 5(c) is a cross-sectional view along line CC in FIG. is. FIG. 10 is a diagram illustrating a side support device, which is a second embodiment of the vehicle seat. FIG. 11 is a plan view of a seat cushion, which is a third embodiment of the vehicle seat. It is a top view of a seat heater in 3rd Example.

A vehicle seat according to an embodiment of the present invention will be described below with reference to FIGS. 1 to 8. FIG.
This embodiment is a vehicle seat having a seat heater between a cushion material and an upholstery material, and storage recesses for storing the seat heater are formed in the cushion side portions on the left and right outer sides of the cushion material. The storage recess is arranged in the seat width direction within a range where the cushion material is in contact with the frame, and is arranged so as to be positioned inside the outer end portion of the range in the seat width direction. The invention relates to a vehicle seat characterized by:
The side of the seat back of the vehicle seat on which the occupant sits is the front side of the seat.

As shown in FIG. 1, the vehicle seat S of this embodiment includes a seat back 1, a seat cushion 2, a headrest 3, and a seat connecting portion 4 to which the seat back 1 and the seat cushion 2 are connected. It is mainly composed of a main body and a sheet-like seat heater 40 attached inside the seat main body.
Note that the seat heater 40 is connected to a power source and a control device via a harness.

The seat back 1 is a backrest portion that supports the back of the seated person from behind, and as shown in FIG. configured as follows.
The back frame is composed of a rectangular frame that serves as a skeleton, and includes an upper frame and a lower frame that extend along the seat width direction with a predetermined gap in the vertical direction, and both ends of the upper frame in the seat width direction. It mainly consists of left and right side frames extending downward and connected to both ends of the lower frame, and a plurality of elastic springs connecting the left and right side frames.

The seat cushion 2 is a seating portion that supports an occupant from below, and as shown in FIGS. 1 and 2, is constructed by placing a cushion material 2b on a cushion frame 2a serving as a framework and covering the seat cushion 2c with a skin material 2c. It is
The cushion frame 2a is composed of a rectangular frame serving as a skeleton, and includes side frame portions 2aa arranged on the left and right sides, a plate-shaped pan frame connecting the front portions of the side frame portions 2aa, and each side frame. It is mainly composed of a rear connecting frame that connects the rear portion of the portion 2aa, and a plurality of elastic springs hooked to the pan frame and the rear connecting frame.

The cushion material 2b is a pad member made of urethane foam or the like, and as shown in FIGS. It is mainly composed of left and right cushion side portions 21 and 22 on the outside.
The cushion side portions 21 and 22 are so-called side bolster portions, and are provided so as to protrude upward from the cushion main body portion 20. More specifically, the cushion side portions 21 and 22 protrude upward toward the outside in the seat width direction (toward the upholstery 2c). It is formed so as to protrude further from the side, and is arranged so as to wrap the seated person from the left and right outer sides.
Suspension grooves 23 for suspending the upholstery 2c are formed on the upper surface of the portion between the cushion main body 20 and the cushion side portions 21, 22. As shown in FIG.
Further, in the upper surfaces of the cushion side portions 21 and 22, storage recesses 24 for storing the side heater portions 40b and 40c of the seat heater 40 are formed. Details will be described later.

The skin material 2c is made of a stretchable nylon material or the like, and is formed in a shape capable of covering the cushion material 2b from above.
Specifically, the upholstery material 2c is divided at positions corresponding to the cushion main body 20 and the cushion side parts 21 and 22, and the divided upholstery materials 2c are sewn together inside the hanging groove 23. are linked together.
A cotton-like wadding material 2ca is sewn and attached over substantially the entire surface of the back surface of the upholstery material 2c at a position corresponding to the cushion main body 20. As shown in FIG.

The headrest 3 is a head portion that supports the occupant's head from behind, and as shown in FIG. 1, is constructed by placing a cushion material 3b on a core material (not shown) and covering the cushion material with a skin material 3c. , are supported by headrest pillars provided on a back frame (not shown).

The seat heater 40 is a planar heating element that heats the seat body, and is attached inside the seat back 1 and the seat cushion 2 as shown in FIG. It is attached between 1b, 2b and skin material 1c, 2c.
As shown in FIG. 4, the seat heater 40 includes a sheet-like sheet substrate 41, electric wires 42 attached to the sheet substrate 41 and connected to a power supply, and heater wires connected to the electric wires 42. 43 , a temperature measuring sensor 44 connected to the electric wire 42 , and a temperature adjusting device 45 connected to the electric wire 42 .

As shown in FIG. 4, the seat heater 40 includes a substantially rectangular central heater portion 40a placed on the upper surface of the cushion main body portion 20, and a substantially L-shaped heater portion 40a placed on the upper surfaces of the left and right cushion side portions 21 and 22. , and the side heater portions 40b and 40c.
A wire 42, a heater wire 43, a temperature measuring sensor 44, and a temperature adjusting device 45 are densely arranged at the rear end portion of the central heater portion 40a.

The seat base material 41 is made of a stretchable cloth material and is a base portion of the seat heater 40 .
V-shaped notch portions 41d are formed as positioning portions at the front and rear ends of the central portion of the sheet base material 41 in the sheet width direction.
When the seat heater 40 is properly placed on the cushioning material 2b, the V-shaped marks of the cutouts 41d are aligned with the T-shaped marks (not shown) provided on the cushioning material 2b.

The electric wire 42 supplies electricity from the power supply to the heater wire 43, the temperature measuring sensor 44, and the temperature adjusting device 45, and a harness 42a is formed by bundling a plurality of electric wires 42 at one end thereof. there is
The harness 42a has one end attached to the sheet base material 41 and the other end extending so as to protrude from the sheet base material 41, and is connected to a power source and a control device.

The heater wire 43 is adhesively fixed onto the seat base material 41, extends while meandering from the rear end portion of the cushion material 2b toward the front side of the seat, and is bent and folded back at the front end portion of the cushion material 2b. , again extending back to the rear end portion.
The heater wire 43 includes a first heater wire 43a, a second heater wire 43b, and a third heater wire 43c, which are connected to the wires 42 and arranged in parallel with each other.
The first heater wire 43a is arranged in the central heater portion 40a, and the second heater wire 43b and the third heater wire 43c protrude outward in the seat width direction from the rear end portion of the central heater portion 40a. portion 40b and the right side heater portion 40c.
Although the heater wire 43 is fixed on the sheet base material 41 with an adhesive, the heater wire 43 may be fixed so as to be folded inside the sheet base material 41 .

The temperature measurement sensor 44 is a thermistor that measures the temperature of the heater wire 43, and outputs an output signal based on the heater temperature measurement result to the control device.
The temperature adjustment device 45 is a thermal thermostat that adjusts the temperature of the heater wire 43. When the heater temperature exceeds a predetermined value, the heater temperature is kept below a certain level by cutting off the electric supply to the heater wire 43. It holds.
The control device (not shown) corresponds to an ECU (Electronic Control Unit), receives an output signal detected by the temperature measurement sensor 44, compares the heater temperature with a set value, and controls each heater wire from the power supply. It controls the electric supply to 43.

In the above configuration, as shown in FIG. 4, the seat heater 40 is composed of a central heater portion 40a and left and right side heater portions 40b and 40c.
Therefore, the seat cushion 2 is divided into the central portion and the left and right side bolster portions in the seat width direction, and the seat with the seat heater can be heated independently.

In the above configuration, the seat heater 40 includes a first heater wire 43a, a second heater wire 43b, and a third heater wire 43c arranged in parallel with each other.
Therefore, for example, even if the second heater wire 43b or the third heater wire 43c is deformed by an external impact or the like, since the first heater wire 43a has a heater function, the heater function of the entire seat heater is maintained. never lost.

<Storage recess for storing the seat heater>
Next, details of the storage recesses 24 formed in the cushion side portions 11 and 12 of the cushion material 2b will be described.
As shown in FIGS. 2 and 3, the storage recess 24 is a stepped portion for storing the left and right side heater portions 40b and 40c of the seat heater 40. It extends along the extension direction of the cushion side portions 21 and 22, in other words, along the seat front-rear direction.
More specifically, the left and right storage recesses 24 are substantially L-shaped in plan view, extend outward in the seat width direction from the rear end portion of the cushion main body 20, and extend along the left and right cushion side portions 11 and 12, respectively. extending in the front-rear direction of the seat.
The left and right storage recesses 24 are formed symmetrically with respect to the cushion main body 20 .

As shown in FIG. 2, the storage recess 24 is formed to such a depth that the heater wire 43 does not protrude outward from the opening of the storage recess 24 when the seat heater 40 is stored.
The storage recess 24 is formed so as to become deeper in the seat width direction from the left and right side wall portions 24a toward the central portion. is formed in
At this time, the heater wire 43 is preferably arranged at a position closer to the central portion of the storage recess 24 in the seat width direction.

As shown in FIG. 2, the storage recess 24 is arranged in a range in which the cushion material 2b (cushion side portion 21) contacts the cushion frame 2a (side frame portion 2aa) in the seat width direction. Specifically, it is arranged so as to be located inside the outer end portion of the range in the seat width direction.
At this time, the heater wire 43 is preferably arranged so as to be positioned inside the outer end portion of the side frame portion 2aa in the seat width direction.
In addition, the storage recess 24 is arranged at a position overlapping the protruding portion 2ab of the side frame portion 2aa that protrudes most toward the cushion side portion 21 (upward side) in the vertical direction.

As shown in FIG. 2, the storage recess 24 is arranged inward in the seat width direction from the portion of the cushion side portion 11 that protrudes most toward the upholstery 2c side (upper side).
In addition, the storage recess 24 is arranged at a position above the upper surface of the cushion main body 10 in the vertical direction.

In the above configuration, as shown in FIG. 3, the storage recess 24 extends continuously along the extension direction of the cushion side portion 21 (the seat front-rear direction).
Specifically, as shown in FIGS. 5(a) and 5(b), the accommodation recess 24 is widened from the rear end portion of the cushion side portion 21 toward the approximate center portion in the extending direction. formed.
In general, the seat central portion of the cushion side portion 21 of the seat cushion 2 is the portion on which the buttocks of the seated person are supported and the seating load is applied.
Therefore, the central portion of the seat is a portion desired to be suitably warmed by the seat heater 40 and a portion desired to suppress deformation of the seat heater 40 .
Therefore, if the storage recess 24 is shaped and arranged as described above, the seat heater 40 can be suitably shaped and arranged, and the deformation of the seat heater 40 can be suppressed.

In the above configuration, as shown in FIGS. 5(b) and 5(c), the storage recess 24 gradually narrows in the extending direction from the substantially central portion of the cushion side portion 21 toward the front portion. It is formed to be
In general, the seat front portion of the cushion side portion 21 is a portion on which the seated person straddles and is subjected to repeated seating load.
Therefore, the front portion of the seat is a portion desired to be moderately warmed by the seat heater 40 and a portion desired to suppress deformation of the seat heater 40 . On the other hand, the area of the seat heater 40 may be made somewhat smaller because it is not a part that is always touched by the seated person.
Therefore, if the storage recess 24 is shaped and arranged as described above, the seat heater 40 can be suitably shaped and arranged, and the deformation of the seat heater 40 can be suppressed.

<Second Embodiment of Vehicle Seat>
Next, a second embodiment of the vehicle seat will be described with reference to FIG. In addition, the description of the content overlapping with the above-described vehicle seat S is omitted.
In the vehicle seat S2 of the second embodiment, in the side bolster portion of the seat cushion 2, the cushion side portion 121 is in the normal position and the projection shown in FIG. The major difference is that a side support device 70 that can be moved between positions is provided.

The side support device 70 is an air cell driven unit, and is attached between the side frame portion 102aa and the cushion side portion 121 in the vertical direction.
Specifically, the side support device 70 is arranged at a position overlapping the storage recess 124 in the vertical direction.
The side support device 70 includes a fixed plate 71 fixed to the side frame portion 102aa, a movable plate 73 attached to the fixed plate 71 so as to be rotatable about a rotary shaft 72, and the fixed plate 71 and the movable plate 73. It is mainly composed of an air cell 74 that is connected and expands to push up the movable plate 73 toward the cushion side portion 121 .

In the above configuration, as shown in FIG. 6, when the cushion side portion 121 moves to the protruding position, the storage recess 124 is the portion of the cushion side portion 121 that most protrudes toward the upholstery 102c (upper obliquely inward). are placed in overlapping positions.
Moreover, at that time, the storage recess 124 is formed so as to be deepest at a position overlapping with the most protruding portion.
In general, of the side bolster portion, the portion supported by the side support device 70 is the portion that is most likely to come into contact with the seated occupant.
Therefore, the portion that is likely to come into contact with the seat heater 140 is the portion that is preferably warmed by the seat heater 140 and the deformation of the seat heater 140 is to be suppressed.
Therefore, by forming the storage recess 124 in this portion that is likely to come into contact with the seat heater 140, the deformation of the seat heater 140 can be suppressed while ensuring the comfort of the seated person.

In the above configuration, when the cushion side portion 121 moves to the projecting position, the upholstery material 102c is stretched toward the seated person. . That is, it becomes easy to give a sense of incongruity to a seated person.
Therefore, the effect of forming the storage recessed portion 124 becomes more conspicuous in the seat provided with the side support device 70 .

<Third Embodiment of Vehicle Seat>
Next, a third embodiment of the vehicle seat will be described with reference to FIGS. 7 and 8. FIG.
The vehicle seat S3 of the third embodiment is significantly different in that the cushion side portion 221 includes a first side heater portion 240ba and a second side heater portion 240bb that are spaced apart from each other.
The first side heater portion 240ba and the second side heater portion 240bb each extend along the extension direction of the cushion side portion 221 (the seat front-rear direction). configured independently of the

The cushion side portion 221 has a first storage recess 224a and a second storage recess 224b for storing the first side heater portion 240ba and the second side heater portion 240b, respectively, and a first storage recess 224a and a second storage recess 224b. A connecting concave portion 224c for connecting is formed.
For this reason, although a high-grade vehicle seat generally has a plurality of seat heaters 240 attached to the side bolster portion, the configuration of the storage recess 224 achieves a good seating feeling even when a plurality of seat heaters 240 are attached. Moreover, deformation of the seat heater 240 can be suppressed.
Further, the formation of the connecting concave portion 224c as described above facilitates the positioning of the seat heater 240. As shown in FIG.

<Other embodiments>
In the above-described embodiment, as shown in FIG. 1, the vehicle seat S is a seat having side bolster portions (cushion side portions 21 and 22), and the seat heater 40 includes the cushion body portion 20 and the cushion side portions 21 and 22. The seat is not particularly limited, and may be, for example, a seat that does not have a side bolster portion.
In that case, the seat heater 40 may be attached only to the cushion main body 20, and the cushion main body 20 is divided into three regions in the seat width direction, and each heater wire 43 is extended to each region. should be placed.

In the above-described embodiment, as shown in FIG. 5A, the seat rear portion of the cushion side portion 21 is supported by the side frame portion 2aa without projecting outward from the side frame portion 2aa in the seat width direction. there is
Therefore, the storage recess 24 may not necessarily be formed in the seat rear portion of the cushion side portion 21 because deformation of the cushion material is relatively small.

In the above-described embodiment, the seat heater 40 is attached to the surface of the storage recess 24 by being adhered with double-sided tape. It may be stowed away.

In the above embodiment, a vehicle seat used in an automobile was described as a specific example, but the present invention is not particularly limited to vehicle seats used in trains, buses, etc., but also vehicle seats used in airplanes, ships, etc. can also be used as
In addition to vehicle seats, it can also be used as seats that are widely used indoors or outdoors in commercial facilities such as movie theaters and planetariums, and public facilities such as hospital waiting rooms.

In this embodiment, the vehicle seat according to the present invention has been mainly described.
However, the above embodiment is merely an example for facilitating understanding of the present invention, and does not limit the present invention. The present invention can be modified and improved without departing from its spirit, and the present invention includes equivalents thereof.

S, S2, S3 Vehicle seat 1 Seat back 1b, 2b, 3b Cushion material 1c, 2c, 3c, 102c Skin material 2ca Wadding material 2 Seat cushion 2a Cushion frame (frame)
2aa, 102aa side frame portion 2ab projecting portion 3 headrest 4 seat connecting portion (connecting portion)
20 Cushion body 21, 22, 121, 221 Cushion side 23 Suspension groove 24, 124, 224 Storage recess 24a Side wall 24b Bottom wall 224a First storage recess 224b Second storage recess 224c Connection recess 40, 140, 240 Seat heater 40a Central heater portion 40b, 40c Side heater portion 240ba First side heater portion 240bb Second side heater portion 41 Seat base material 41d Notch portions 42, 142 Electric wire 42a Harness 43 Heater wire 43a First heater wire 43b Second heater Wire 43c Third heater wire 44 Temperature measurement sensor 45, 145 Temperature adjustment device 70 Side support device 71 Fixed plate 72 Rotating shaft 73 Movable plate 74 Air cell

Claims (13)

A vehicle seat comprising a frame that serves as a skeleton and a cushion material placed thereon and covered with an upholstery material, and comprising a seat heater between the cushion material and the upholstery material,
The cushion material has a cushion main body portion in the central portion in the seat width direction and cushion side portions on the left and right outer sides of the cushion main body portion,
A storage recess for storing the seat heater is formed in the cushion side portion,
The storage recess is arranged in the seat width direction within a range in which the cushion material abuts against the frame, and is arranged so as to be positioned inside the outer end portion of the range in the seat width direction. A vehicle seat, characterized in that: The frame has left and right side frame portions arranged laterally in the seat width direction,
2. The vehicle seat according to claim 1, wherein the storage recess is arranged at a position overlapping a portion of the side frame portion that protrudes most toward the cushion member. The cushion side portion is formed so as to protrude toward the upholstery material toward the outside in the seat width direction,
3. The vehicle seat according to claim 2, wherein the storage recess is disposed inward in the seat width direction of a portion of the cushion side portion that protrudes most toward the upholstery material. The seat heater is
A sheet-like sheet base material and a heater wire attached to the sheet base material,
4. The vehicle seat according to any one of claims 1 to 3, wherein the heater wire is provided so as not to protrude from the storage recess. The frame has left and right side frame portions arranged laterally in the seat width direction,
5. The vehicle seat according to claim 4, wherein the heater wire is positioned inside the outer end portion of the side frame portion in the seat width direction. The storage recess is formed so as to become deeper from both end portions toward the center portion in the seat width direction,
6. The vehicle seat according to claim 4, wherein the heater wire is arranged in the storage recess at a position on the central portion side. Equipped with a connecting part where the seat cushion and the seat back are connected,
The storage recess is formed so as to extend along an extension direction perpendicular to the seat width direction of the cushion side portion, and is formed so as to widen in the extension direction as the distance from the connection portion increases. 7. The vehicle seat according to any one of claims 1 to 6, wherein 8. The storage recesses according to any one of claims 1 to 7, wherein the storage recesses are provided in the left and right cushion side portions and are formed so as to be bilaterally symmetrical with respect to the cushion body portion. vehicle seat. 9. The vehicle seat according to any one of claims 1 to 8, wherein the seat heater is attached to the surface of the storage recess by bonding. The seat heater has a central heater portion arranged in the cushion main body portion and a side heater portion arranged in the cushion side portion,
10. The vehicle seat according to any one of claims 1 to 9, wherein the central heater portion is formed with a positioning portion for arranging at a predetermined position of the cushion body portion. The side heater section has a first side heater section and a second side heater section spaced apart from each other,
The cushion side portion is formed with a first housing recess and a second housing recess for housing the side heater portion, respectively, and a connecting recess for connecting the first housing recess and the second housing recess. 11. The vehicle seat according to claim 10, wherein a side support device capable of moving the cushion side portion between a predetermined position and a projecting position where the cushion side portion projects toward the upholstery from the predetermined position;
The vehicle seat according to any one of claims 1 to 11, wherein the storage recess is arranged at a position overlapping with the side support device. The storage recess is
arranged at a position overlapping a portion of the cushion side portion that most protrudes toward the upholstery when moved to the protruding position, and
13. The vehicle seat according to claim 12, wherein the seat is formed to be deepest at a position overlapping with the most projecting portion.

Images