JP7273334B2 - vehicle seat - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle seat provided with a planar heating element capable of heating the seat surface.

2. Description of the Related Art A seat provided with a planar heater (a planar heating element) capable of heating a seating surface is known. In such a sheet, the planar heating element is arranged between the pad and the skin. Further, the heaters are provided on a seat surface portion in the center of the seat in the left-right direction and on both left and right sides of the seat surface portion and on projecting portions projecting toward the occupant (Patent Document 1).

A hanging groove for hanging the skin of the seat is provided between the seat surface portion and the overhanging portion. A plastic cord is attached to the seam of the seat and overhang to provide rigidity, and this plastic cord is inserted into the hanging groove. The plastic cord is hooked to the metal wire provided at the bottom of the groove by means of a C-shaped member, hook, hook-and-loop fastener, or the like.

JP 2016-185760 A

By the way, when connecting the sheet heating element on the seat and the sheet heating element on the overhang, if this connecting part is put in the hanging groove, part of the groove must be deepened so as not to interfere with the plastic cord, In order to prevent the connection part from being affected by the metal wire, it is necessary to adopt a complicated structure such as bending the metal wire so as to bypass it.

In addition, the hanging groove between the seat surface and the overhang that extends in the front-rear direction (for seat cushions) or up-down direction (for seat backs) should prevent the occupant from kneeling or putting their hands on it. and may be subject to heavy loads. Therefore, if the connecting portion of the heater is inserted into this hanging groove, the connecting portion may be damaged. In particular, in the case of a seat cushion, there is a high possibility that the user will be put on their knees when cleaning the interior of the vehicle.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a vehicle seat having a simple structure and having a planar heating element that is less likely to be damaged.

A vehicle seat of the present invention for solving the above-described problems comprises a pad, a skin covering the pad, a resistance heating element, and a sheet-like support for supporting the resistance heating element, wherein the pad and the skin and a planar heating element provided between. The pad consists of a seat surface portion arranged in the center in the left-right direction, an overhanging portion arranged on the left and right outer sides of the seat surface portion and projecting toward the occupant side to support the side portion of the occupant, and a hanging groove in which the outer skin is hung. The hanging groove includes a partition extending in a direction orthogonal to the left-right direction and arranged between the seat surface portion and the overhanging portion, and the planar heating element is a first It has a heater, a second heater arranged in the projecting portion, and a connection portion connecting the first heater and the second heater, and the connection portion passes through a portion avoiding the partition portion to pass the first heater and the second heater. 2 heaters are connected.

According to such a configuration, the connecting portion that connects the first heater and the second heater passes through a position in the hanging groove that avoids the partition, so that the planar heating element can be easily configured. A vehicle seat that is not easily damaged can be provided.

In the vehicle seat described above, the pad may be a seat cushion pad, and the partition may extend in the front-rear direction. In this case, the connection portion may connect the first heater and the second heater through the rear side of the partition portion.

According to such a configuration, the first heater and the second heater can be connected through the portion on the rear side of the partition where the load is less likely to be applied.

Further, in the above-described vehicle seat, the pad is a seat cushion pad, the partition extends in the front-rear direction, and the connecting portion is on the front side of the partition and passes through the front side surface of the pad to connect the first heater and the second heater. A heater may be connected.

According to such a configuration, even when the connection portion passes through the front side of the partition portion, it is less likely to receive a large load by passing through the front side surface of the pad. In addition, when the connecting portion is a heater, the calves of the passenger can be warmed, and comfort can be improved.

In the vehicle seat described above, the pad is a seat back pad, the partition extends vertically, and the connecting portion connects the first heater and the second heater through the upper or lower side of the partition. good too.

According to such a configuration, in the seat back, the connection portion connects the first heater and the second heater through the upper side or the lower side of the partition, so that the first heater passes through the portion where the load is not applied easily. and the second heater can be connected.

According to the present invention, since the connecting portion that connects the first heater and the second heater passes through a position that avoids the dividing portion of the hanging groove, the planar heating element is less likely to be damaged with a simple structure. .

1 is a perspective view of a vehicle seat showing an embodiment of a vehicle seat according to the present invention; FIG. It is a perspective view of a seat frame. It is an exploded perspective view of a seat cushion pad, a planar heating element, and an outer skin. FIG. 4 is a diagram showing the positional relationship between a seat cushion pad and a planar heating element; FIG. 5 is a view of the seat cushion corresponding to the XX section of FIG. 4; FIG. 5 is a view of the seat cushion corresponding to the YY section of FIG. 4; FIG. 4 is a diagram showing the positional relationship between a seat back pad and a planar heating element; FIG. 10 is a perspective view showing a seat cushion pad and a planar heating element according to a second embodiment; FIG. 10 is a diagram showing a seat back pad and a planar heating element according to a third embodiment;

[First embodiment]
A first embodiment of a vehicle seat according to the present invention will be described below with reference to the accompanying drawings. The vehicle seat of the first embodiment is configured as a vehicle seat S mounted in an automobile, as shown in FIG. 1, for example. This vehicle seat S includes a seat cushion S1, a seat back S2 and a headrest S3.

The seat cushion S1 includes a seat surface portion S11 arranged in the center of the left and right sides, which contacts and supports the occupant's buttocks and thighs from below, and a seat cushion S1 which is arranged on both the left and right sides of the seat surface portion S11 to support the occupant's thighs and buttocks from below. It has an overhanging portion S12 that overhangs toward the occupant for support.
Similarly, the seat back S2 is also arranged in the center of the left and right sides of the seat surface portion S21, which is in contact with the back of the occupant and supports the back of the occupant from behind. It has an overhanging portion S22 that overhangs toward the occupant to support the side portion.

As shown in FIG. 2, the seat frame F includes a seat cushion frame F1 and a seatback frame F2 supported by the seat cushion frame F1.

As shown in FIG. 3, the seat cushion S1 is sandwiched between a seat cushion pad P1 as an example of a pad covering the seat cushion frame F1, a skin K1 covering the seat cushion pad P1, and the seat cushion pad P1 and the skin K1. and a planar heating element 100 provided in a state of being covered.
Similarly to the seat cushion S1, the seat back S2 also includes a seat back pad P2 (see FIG. 7) as an example of a pad covering the seat back frame F2, a skin K2 (see FIG. 1) covering the seat back pad P2, and a seat. A planar heating element 200 (see FIG. 7) provided in a state sandwiched between the back pad P2 and the skin K2 is provided.

The seat cushion pad P1 has a seat surface portion P11 corresponding to the seat surface portion S11 and an overhang portion P12 corresponding to the overhang portion S12. Specifically, the seat cushion pad P1 includes a seat surface portion P11 arranged in the center in the left-right direction, and protrusions arranged on the left and right outer sides of the seat surface portion P11 and projecting toward the occupant to support the side portions of the occupant. and a part P12. Suspending grooves 30 (31 to 33) for suspending the skin K1 are formed in the upper surface of the seat cushion pad P1.

The hanging groove 30 includes two partitions 31 extending in a direction orthogonal to the left-right direction, here, in the front-rear direction, and rear end portions of the two partitions 31, which are arranged between the seat surface portion P11 and the projecting portion P12. and a second lateral groove 33 laterally connecting the two partitions 31 at a position in front of the first lateral groove 32 . Further, the seat cushion pad P1 has a shallow groove 35 extending obliquely rearward from the connecting portion between the partition portion 31 and the first lateral groove 32, separately from the hanging groove 30. As shown in FIG. The shallow groove 35 is shallower than the hanging groove 30 and receives the seam allowance of the skin K1, but is a groove that prevents the skin K1 from being hung by a C-shaped member, a hook, a hook-and-loop fastener, or the like. Further, the seat cushion pad P1 has a shallow groove 36 extending downward from the front end of the partition 31 in the front side surface 39 thereof. The shallow groove 36 also receives the seam allowance of the outer skin K1, but is a groove from which the outer skin K1 is not hung by a C-shaped member, a hook, a hook-and-loop fastener, or the like.

The planar heating element 100 has a resistance heating element 100A (110, 120, 130) and a sheet-like support 100B that supports the resistance heating element 100A.
The resistance heating element 100A may be, for example, a finely meandering nichrome wire, a high-resistance metal plate, sheet-like or cloth-like carbon, or the like. That is, as long as it is a thin sheet that can be sandwiched between the pad and the skin, the specific shape and material are arbitrary.
The support 100B is a sheet-like object that supports the resistance heating element 100A, and any material can be used. For example, the support 100B is a nonwoven fabric. The support 100B may be integral with the resistive heater 100A, such as when the resistive heater is impregnated with the support.

The resistance heating element 100A includes a first heater 110 arranged on the seat surface portion P11, two second heaters 120 arranged on the projecting portion P12, and a connection portion 130 connecting the first heater 110 and the second heater 120. have
The first heater 110 has a front portion 111 located forward of the second lateral groove 33 , a rear portion 112 located rearward of the second lateral groove 33 , and a first heater connection portion 113 connecting the front portion 111 and the rear portion 112 . have The width of the first heater connection portion 113 in the left-right direction is smaller than that of the front portion 111 and the rear portion 112 .

The second heater 120 has a shape elongated in the front-rear direction to match the shape of the overhanging portion P12.

The connection portion 130 connects the rear ends of the second heater 120 to each other, and connects the left-right connection portion 131 extending in the left-right direction, the central portion of the left-right connection portion 131 in the left-right direction, and the rear portion 112 of the first heater 110 . and a front-rear connection portion 132 . In the present embodiment, the connection part 130 is a heater made of a resistance heating wire such as a nichrome wire, but it may be a wiring that has a low resistance and hardly generates heat.

As shown in FIG. 4, the connection portion 130 connects the first heater 110 and the second heater 120 through a position avoiding the partition portion 31 of the seat cushion pad P1. Specifically, the connecting portion 130 has the left and right connecting portions 131 passing through the rear side of the partition portion 31 to connect the left and right second heaters 120 , and the front and rear connecting portion 132 passing between the two partition portions 31 and connecting the second heaters 120 . The rear portion 112 of the 1-heater 110 and the left-right connection portion 131 are connected.

As shown in FIG. 5, a plastic cord 51 is provided at the sewn portion between the seat surface portion K11 of the upholstery K1 corresponding to the seat surface portion S11 and the overhanging portion K12 of the upholstery K1 corresponding to the overhanging portion S12. The plastic cord 51 is, for example, sewn together with the material of the seat portion K11 and the projecting portion K12.

Mounting members 52 are provided on the plastic cord 51 at appropriate intervals. The mounting member 52 is a C-shaped metal fitting hooked on a metal wire 53 embedded in the seat cushion pad P1. The attachment member 52 may be a hook or hook-and-loop fastener. When a hook-and-loop fastener is used, for example, one side of the hook-and-loop fastener should be applied to each of the opposing surfaces of the metal wire 53 and the plastic cord 51 . In this manner, the stitched portion of the seat surface portion K11 and the projecting portion K12 of the outer skin K1 is suspended in the partition portion 31 of the suspension groove 30. As shown in FIG. As described above, since the first heater 110 and the second heater 120 are connected through a position avoiding the partition 31 , the planar heating element 100 does not enter the partition 31 .

As shown in FIG. 6, among the hanging grooves 30 of the seat surface portion P11, the first lateral grooves 32 are formed with a sufficient depth for the plastic cord 51 to enter, and a hanging groove portion 32A deeper than the hanging groove portion 32A. and a deep groove portion 32B. A front-rear connection portion 132 is inserted into the deep groove portion 32B. Therefore, interference between the front-rear connection portion 132 and the plastic cord 51 is suppressed. In addition, in the cross section where the deep groove portion 32B is formed, the metal wire 53 is displaced rearward with respect to the deep groove portion 32B so that the metal wire 53 does not affect the front-rear connection portion 132. there is

Similarly, the second lateral groove 33 also includes a hanging groove portion 33A having a depth sufficient for the plastic cord 51 to enter, and a deep groove portion 33B formed deeper than the hanging groove portion 33A. A first heater connecting portion 113 is inserted into the deep groove portion 33B. Therefore, interference between the first heater connecting portion 113 and the plastic cord 51 is suppressed. In addition, in the cross section where the deep groove portion 33B is formed, the metal wire 53 is shifted backward with respect to the deep groove portion 33B so that the metal wire 53 does not affect the first heater connection portion 113. It's becoming

As shown in FIG. 7, the seat back S2 is also provided with a sheet heating element 200 on the seat back pad P2 in the same manner as the seat cushion S1.

The seat back pad P2 has a seat surface portion P21 arranged in the center in the left-right direction, and overhanging portions P22 arranged on the left and right outer sides of the seat surface portion P21 and projecting toward the occupant to support the side portions of the occupant. are doing. Suspension grooves 40 (41 to 43) for suspending the skin K2 are formed in the front surface of the seat back pad P2.

The suspension groove 40 is arranged between the seat surface portion P21 and the overhanging portion P22 and extends in a direction perpendicular to the left-right direction, here, in the vertical direction, and the lower ends of the two partition portions 41. It includes a first lateral groove 42 that connects in the left-right direction, and two second lateral grooves 43 that connect the two partitions 41 in the left-right direction above the first lateral groove 42 .

The planar heating element 200 has a resistance heating element 200A (210, 220, 230) and a sheet-like support 200B that supports the resistance heating element 200A. The resistance heating element 200A can employ the same configuration as the resistance heating element 100A, and the support 200B can employ the same configuration as the support 100B.

The resistance heating element 200A includes a first heater 210 arranged on the seat surface portion P21, two second heaters 220 arranged on the projecting portion P22, and a connection portion 230 connecting the first heater 210 and the second heater 220. have

Like the first heater 110 of the seat cushion S1, the first heater 210 is divided into a plurality of parts, and the connection part is in the second lateral groove 43, but its structure is the same as that of the seat cushion S1. Description is omitted.

The second heater 220 has a vertically elongated shape to match the shape of the projecting portion P22.

The connection portion 230 connects the lower ends of the second heaters 220 to each other, and connects a horizontal connection portion 231 extending in the horizontal direction, a central portion of the horizontal connection portion 231 in the horizontal direction, and a lower portion of the first heater 210 . and a portion 232 . The connection portion 230 connects the first heater 210 and the second heater 220 through a position avoiding the partition portion 41 of the seat back pad P2. Specifically, the connection part 230 has a left-right connection part 231 that passes under the partition part 41 to connect the left and right second heaters 220 , and a top-bottom connection part 232 that passes between the two partition parts 41 to connect the second heater 220 . 1 The lower part of the heater 210 and the left-right connection part 231 are connected.

The vertical connection portion 232 is inserted into a deep groove portion (not shown) formed in the first lateral groove 42, similarly to the seat cushion S1.

According to the vehicle seat S configured as described above, in the seat cushion S1, the connection portion 130 that connects the first heater 110 and the second heater 120 is positioned in the hanging groove 30 away from the partition portion 31. More specifically, by passing through the rear side of the partition portion 31, the planar heating element 100 is less likely to be damaged despite its simple configuration.

In addition, in the connection portion 130, the front-rear connection portion 132 crosses the first lateral groove 32 and enters the deep groove portion 32B. Compared to the dividing portion 31, the first lateral groove 32 is less likely to be subjected to a large load such as an occupant kneeling, so the connecting portion 130 is less likely to be damaged. When connecting the left and right second heaters 120 and the central first heater 110 across the partition 31 as in the conventional art, a deep groove is required to connect the first heater 110 and the second heater 120 . Although two extra structures for passing the parts are required, this embodiment does not require such structures, so the structure is simple.

Also in the seat back S2, the connecting portion 230 connecting the first heater 210 and the second heater 220 is located in the suspension groove 40 at a position avoiding the partition portion 41, specifically, below the partition portion 41. By passing through the side, the planar heating element 100 is less likely to be damaged despite its simple configuration.

[Second embodiment]
Next, a vehicle seat according to a second embodiment will be described.
In the second embodiment, only parts different from the first embodiment will be described, and the same parts as in the first embodiment will be assigned the same reference numerals as those in the first embodiment, and descriptions thereof will be omitted.
In the seat cushion S1 of the vehicle seat of the second embodiment, the partition portion 331 of the hanging groove 30 extends in the front-rear direction and extends to the rear end of the seat cushion pad P1.

In the planar heating element 400, the connecting portion 430 connects the first heater 110 and the second heater 120 through the front side surface 39 of the seat cushion pad P1 on the front side of the partition portion 331. FIG. Specifically, the connection portion 430 extends downward from the front end of the second heater 120, crosses the shallow groove 36 on the front surface of the seat cushion pad P1, and connects the two second heaters 120 in the left-right direction. and a vertical connection portion 432 extending downward from the front end of the first heater 110 with the same width as the first heater 110 and connected to the horizontal connection portion 431 . The connecting portion 430 is made up of a resistance heating element, that is, a heater.

According to the vehicle seat having the seat cushion S1 having such a configuration, the first heater 110 and the second heater 120 can be heated with a simple configuration without receiving a large load by passing through the front side surface 39 of the seat cushion pad P1. can be connected. In addition, the connecting portion 430 can also warm the calves of the passenger, improving comfort.

[Third embodiment]
Next, a vehicle seat according to a third embodiment will be described.
In the third embodiment, only parts different from the first embodiment will be described, and the same parts as in the first embodiment will be assigned the same reference numerals as those in the first embodiment, and description thereof will be omitted.
In the seat back S2 of the vehicle seat of the third embodiment, the dividing portion 541 of the hanging groove 40 extends vertically and extends to the lower end of the seat back pad P2. In addition, the hanging groove 40 includes a lateral groove 542 that connects the upper ends of the partitions 541 in the left-right direction.

In the planar heating element 600 , the connection portion 630 connects the first heater 210 and the second heater 220 through the upper side of the partition portion 541 . Specifically, the connection portion 630 includes a left-right connection portion 631 that connects the left and right second heaters 220 in the left-right direction, and an up-down connection portion that connects the upper end of the first heater 210 and the center portion of the left-right connection portion 631 in the left-right direction. 632. The vertical connection portion 632 connects the horizontal connection portion 631 and the first heater 210 across the lateral groove 542 .

According to the vehicle seat having the seat back S2 having such a configuration, the connection portion 630 connects the first heater 210 and the second heater 220 through the upper side of the partition portion 541, thereby reducing the load on the portion where the load is not applied. The first heater 210 and the second heater 220 can be connected through.

Although the vehicle seat S as an embodiment of the vehicle seat according to the present invention has been described above, the vehicle seat of the present invention is not limited to the vehicle seat S of the embodiment, and its structure may be changed as appropriate. can be changed.

For example, in the above-described embodiment, an independent type seat that is used as a driver's seat in a passenger car is illustrated, but it can also be used in a bench type seat that is often used as a rear seat in a passenger car.

In the above-described embodiment, the vehicle seat is exemplified as a vehicle seat for a vehicle, but it may be a vehicle seat for a railroad vehicle, or may be configured as a seat for a ship or an aircraft.

In addition, the configurations described in each of the above-described embodiments and modifications can be implemented in combination as appropriate.

30 suspension groove 31 division part 39 side surface 40 suspension groove 41 division part 100 planar heating element 100A resistance heating element 100B support 110 first heater 120 second heater 130 connecting part 200 planar heating element 200A resistance heating element 200B support Body 210 First heater 220 Second heater 230 Connection part 331 Partition part K1, K2 Outer skin P1 Seat cushion pad P2 Seat back pad P11, P21 Seat surface part P12, P22 Overhang part S Vehicle seat

Claims (7)

seat cushion pad,
a skin covering the seat cushion pad;
A planar heating element comprising a resistance heating element and a sheet-like support for supporting the resistance heating element, and provided between the seat cushion pad and the skin,
The seat cushion pad includes a seat portion arranged in the center in the left-right direction, projection portions arranged on the left and right outer sides of the seat surface portion and projecting toward the occupant side to support the side portions of the occupant, and the skin suspended from the seat cushion pad. a suspension groove that is inserted into the suspension groove, and the suspension groove includes a partition portion that extends in the front-rear direction and is disposed between the seat surface portion and the overhang portion;
The planar heating element includes a first heater which is the resistance heating element arranged on the seat surface portion, a second heater which is the resistance heating element arranged on the overhanging portion, the first heater and the second heater. a connecting portion for connecting two heaters, wherein the connecting portion connects the first heater and the second heater through the front or rear of the partition portion. . The connection portion extends downward from the front end of the first heater, extends downward from the front end of the second heater, and connects the first heater and the second heater through the front side surface of the seat cushion pad. 2. The vehicle seat according to claim 1, wherein the vehicle seat is . 3. The vehicle seat according to claim 2, wherein said partition extends to the rear end of said seat cushion pad. The partition extends in the front-rear direction,
2. The vehicle according to claim 1, wherein the connection portion is positioned on the upper surface of the seat cushion pad, and connects the first heater and the second heater through the rear of the partition portion. sheet for. seat back pad and
a skin covering the seat back pad;
a planar heating element comprising a resistance heating element and a sheet-like support for supporting the resistance heating element, and provided between the seat back pad and the skin,
The seat back pad includes a seat portion arranged in the center in the left-right direction, projection portions arranged on the left and right outer sides of the seat surface portion and projecting toward the occupant side to support the side portions of the occupant, and the skin suspended. and a hanging groove in which the hanging groove is arranged, the hanging groove including a partition portion extending in the vertical direction and arranged between the seat portion and the overhang portion,
The planar heating element includes a first heater which is the resistance heating element arranged on the seat surface portion, a second heater which is the resistance heating element arranged on the overhanging portion, the first heater and the second heater. a connecting portion for connecting two heaters, wherein the connecting portion connects the first heater and the second heater through above or below the partition portion. . a headrest;
seat cushion frame,
a seat back frame;
a seat back pad covering the seat back frame;
a second skin covering the seat back pad;
a second planar heating element provided between the seat back pad and the second skin;
further comprising
The vehicle seat according to any one of claims 1 to 4, wherein the seat cushion pad covers the seat cushion frame. a headrest;
seat cushion frame,
a seat back frame;
a seat cushion pad covering the seat cushion frame;
a third skin covering the seat cushion pad;
a third planar heating element provided between the seat cushion pad and the third skin;
further comprising
6. The vehicle seat according to claim 5, wherein said seat back pad overlies said seat back frame.

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