JP2021185084A - Vehicle seat - Google Patents

Abstract

To provide a vehicle seat which has a simple configuration, and in which a planar heating element is hardly damaged.SOLUTION: A vehicle seat comprising a pad (seat cushion pad P1), a skin K1, and a planar heating element 100 provided between the pad and the skin K1. The pad has: a seating face part P11 which is located at a center in a longitudinal direction; a bulging part P12 which is located at left and right outer sides of the seating face part P11, and is bulged to a crewman side in order to support a side part of the crewman; and a hanging groove 30 in which the skin K1 is hung. The hanging groove 30 includes a partition part 31 which is located between the seating face part P11 and the bulging part P12, and extends in a direction orthogonal to the longitudinal direction. The planar heating element 100 has a first heater 110 which is located on the seating face part P11, a second heater 120 which is located on the bulging part P12, and a connection part 130 which connects the first heater 110 and the second heater 120 to each other. The connection part connects the first heater 110 and the second heater 120 through a portion avoiding the partition part 31.SELECTED DRAWING: Figure 3

Description

The present invention relates to a vehicle seat provided with a planar heating element capable of heating the seat surface.

A sheet provided with a planar heater (planar heating element) capable of heating the seat surface is known. In such a sheet, the planar heating element is located between the pad and the epidermis. Further, the heaters are provided on the seat surface portion at the center in the left-right direction of the seat and on the left and right sides of the seat surface portion on the overhanging portions protruding toward the occupant side (Patent Document 1).

A hanging groove for hanging the skin of the seat is provided between the seat surface portion and the overhanging portion. The skins of the seat surface and the overhanging portion are provided with a plastic cord that gives rigidity to the sewn portion, and this plastic cord is inserted in the hanging groove. The plastic cord is hooked on a metal wire provided at the bottom of the groove by a C-shaped member, a hook, a hook-and-loop fastener, or the like.

Japanese Unexamined Patent Publication No. 2016-185760

By the way, when connecting the surface heating element of the seat surface part and the surface heating element of the overhanging part, if this connection part is put in the hanging groove, a part of the groove may be deepened so as not to interfere with the plastic cord. It is necessary to take a complicated structure such as bending the metal wire so as to bypass the metal wire so that the connection portion is not affected by the metal wire.

In addition, the hanging groove extending in the front-rear direction (in the case of a seat cushion) or in the vertical direction (in the case of a seat back) between the seat surface and the overhanging part allows the occupant to kneel or touch his / her hands. Therefore, a large load may be applied. 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 knee will be caught when cleaning the inside of the car.

The present invention has been made in view of the above background, and an object of the present invention is to provide a vehicle seat having a simple structure and in which a planar heating element is not easily damaged.

The vehicle seat of the present invention for solving the above-mentioned problems includes a pad, a skin covering the pad, a resistance heating element, and a sheet-shaped support for supporting the resistance heating element, and the pad and the skin. It is provided with a planar heating element provided between the two. The pads are arranged in the center of the seating surface in the left-right direction, on the left and right sides of the seating surface, and overhanging toward the occupant to support the occupant's side, and a hanging groove in which the skin is suspended. The suspension groove includes a partition portion extending in a direction orthogonal to the left-right direction, which is arranged between the seat surface portion and the overhanging portion, and the planar heating element is arranged on the seat surface portion. It has a heater, a second heater arranged in an overhanging portion, and a connecting portion connecting the first heater and the second heater, and the connecting portion passes through a portion avoiding a partition portion to the first heater and the first heater. It is characterized in that two heaters are connected.

According to such a configuration, the connecting portion connecting the first heater and the second heater passes through a position of the hanging groove avoiding the partition portion, so that the planar heating element can be obtained with a simple configuration. It is possible to provide a vehicle seat that is not easily damaged.

In the vehicle seat described above, the pad is a seat cushion pad, and the compartment may be configured to extend in the front-rear direction. In this case, the connecting 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 a portion on the rear side of the partition portion where a load is difficult to be applied.

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

According to such a configuration, even when the connecting 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. Further, when the connection portion is composed of a heater, the calf of the occupant can be warmed, and the comfort can be improved.

In the above-mentioned vehicle seat, the pad is a seat back pad, the partition portion extends in the vertical direction, and the connection portion connects the first heater and the second heater through the upper side or the lower side of the compartment portion. May be good.

According to such a configuration, in the seat back, the connecting portion connects the first heater and the second heater through the upper side or the lower side of the partition portion, so that the first heater passes through the portion where the load is hard to be applied. And the second heater can be connected.

According to the present invention, the connecting portion connecting the first heater and the second heater passes through a position avoiding the partition portion of the hanging groove, so that the planar heating element is not easily damaged by a simple configuration. ..

It is a perspective view of the vehicle seat which shows one Embodiment of the vehicle seat which concerns on this invention. 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 epidermis. It is a figure which shows the positional relationship between a seat cushion pad and a planar heating element. It is a figure corresponding to the XX cross section of FIG. 4 of a seat cushion. It is a figure corresponding to the YY cross section of FIG. 4 of a seat cushion. It is a figure which shows the positional relationship between a seat back pad and a planar heating element. It is a perspective view which shows the seat cushion pad and a planar heating element which concerns on 2nd Embodiment. It is a figure which shows the seat back pad and the planar heating element which concerns on 3rd Embodiment.

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

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

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

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

The seat cushion pad P1 has a seat surface portion P11 corresponding to the seat surface portion S11 and an overhanging portion P12 corresponding to the overhanging portion S12. Specifically, the seat cushion pad P1 is arranged on the left and right outer sides of the seat surface portion P11 arranged in the center in the left-right direction and the seat surface portion P11, and overhangs on the occupant side to support the occupant's side portion. It has a part P12. A hanging groove 30 (31 to 33) into which the skin K1 is suspended is formed on the upper surface of the seat cushion pad P1.

The hanging groove 30 is arranged between the seat surface portion P11 and the overhanging portion P12 in a direction orthogonal to the left-right direction, here, two compartments 31 extending in the front-rear direction, and each rear end portion of the two compartments 31. Includes a first lateral groove 32 that connects the two sections 31 in the left-right direction, and a second lateral groove 33 that connects the two compartments 31 in the left-right direction at a position prior to the first lateral groove 32. Further, the seat cushion pad P1 has a shallow groove 35 extending diagonally rearward from the connecting portion between the partition portion 31 and the first lateral groove 32, in addition to the hanging groove 30. The shallow groove 35 is shallower than the hanging groove 30 and accepts the seam allowance of the skin K1, but is a groove in which the skin K1 is not suspended 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 compartment 31 on the front side surface 39. The shallow groove 36 also accepts the seam allowance of the skin K1, but is a groove in which the skin K1 is not suspended by a C-shaped member, a hook, a hook-and-loop fastener, or the like.

The planar heating element 100 includes a resistance heating element 100A (110, 120, 130) and a sheet-shaped support 100B that supports the resistance heating element 100A.
The resistance heating element 100A may be, for example, a nichrome wire finely meandered, a high-resistance metal plate, a sheet-shaped or cloth-shaped carbon, or the like. That is, the specific shape and material are arbitrary as long as they are in the form of a thin sheet that can be sandwiched between the pad and the epidermis.
The support 100B is a sheet-like material that supports the resistance heating body 100A, and the material is not limited. For example, the support 100B is a non-woven fabric. The support 100B may be integrated with the resistance heating body 100A, such as when the resistance heating body is impregnated in the support.

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

The second heater 120 has a long shape in the front-rear direction in accordance with 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 and right connection portions 131 extending long to the left and right, the central portion of the left and right connection portions 131 in the left-right direction, and the rear portion 112 of the first heater 110. It has a front-rear connection portion 132. In the present embodiment, the connection portion 130 is a heater made of a resistance heating wire such as a nichrome wire, but wiring having a small resistance and hardly generating heat may be used.

As shown in FIG. 4, the connecting 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, in the connecting portion 130, the left and right connecting portions 131 pass through the rear side of the compartment 31 to connect the left and right second heaters 120, and the front and rear connecting portions 132 pass between the two compartments 31. 1 The rear portion 112 of the heater 110 and the left and right connecting portions 131 are connected.

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

The plastic cord 51 is provided with mounting members 52 at appropriate intervals. The mounting member 52 is a C-shaped metal fitting, and is hooked on a metal wire 53 embedded in the seat cushion pad P1. The mounting member 52 may be a hook or a hook-and-loop fastener. When using a hook-and-loop fastener, for example, it is preferable to put one of the hook-and-loop fasteners on the facing surfaces of the metal wire 53 and the plastic cord 51. In this way, the sewn portion of the seat surface portion K11 of the skin K1 and the overhanging portion K12 is suspended in the section portion 31 of the suspension groove 30. As described above, since the first heater 110 and the second heater 120 are connected through a position avoiding the compartment 31, the planar heating element 100 does not enter the compartment 31.

As shown in FIG. 6, of the hanging grooves 30 of the seat surface portion P11, the first horizontal groove 32 is formed deeper than the hanging groove portion 32A and the hanging groove portion 32A having a depth sufficient for the plastic cord 51 to enter. Includes the deep groove portion 32B. The front-rear connecting portion 132 is inserted in the deep groove portion 32B. Therefore, the interference between the front-rear connection portion 132 and the plastic cord 51 is suppressed. Further, in the cross section where the deep groove portion 32B is formed, the metal wire 53 is arranged so as to be 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 horizontal groove 33 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. The first heater connecting portion 113 is inserted in the deep groove portion 33B. Therefore, the interference between the first heater connecting portion 113 and the plastic cord 51 is suppressed. Further, in the cross section where the deep groove portion 33B is formed, the metal wire 53 is arranged so as to be displaced rearward with respect to the deep groove portion 33B so that the metal wire 53 does not affect the first heater connecting portion 113. It has become.

As shown in FIG. 7, as for the seat back S2, the planar heating element 200 is provided 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 an overhanging portion P22 arranged on the left and right outer sides of the seat surface portion P21 and protruding toward the occupant side to support the occupant side portion. is doing. A hanging groove 40 (41 to 43) into which the skin K2 is suspended is formed on the front surface of the seat back pad P2.

The hanging groove 40 is arranged between the seat surface portion P21 and the overhanging portion P22 in a direction orthogonal to the left-right direction, here, two compartments 41 extending in the vertical direction, and each lower end portion of the two compartments 41. It includes a first lateral groove 42 connecting in the left-right direction and two second lateral grooves 43 connecting the two compartments 41 in the left-right direction at a position above the first lateral groove 42.

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

The resistance heating body 200A includes a first heater 210 arranged on the seat surface portion P21, two second heaters 220 arranged on the overhanging portion P22, and a connecting portion 230 connecting the first heater 210 and the second heater 220. Has.

Like the first heater 110 of the seat cushion S1, the first heater 210 is divided into a plurality of places, and the connection portion thereof is contained in the second horizontal groove 43, but the configuration is the same as that of the seat cushion S1. The explanation is omitted.

The second heater 220 has a vertically long shape according to the shape of the overhanging portion P22.

The connection portion 230 connects the lower ends of the second heater 220 to each other, and connects the left and right connection portions 231 extending long to the left and right, the central portion of the left and right connection portions 231 in the left-right direction, and the lower portion of the first heater 210. It has a portion 232 and. 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, in the connecting portion 230, the left and right connecting portions 231 pass under the partition portion 41 to connect the left and right second heaters 220, and the upper and lower connecting portions 232 pass between the two partition portions 41. 1 The lower part of the heater 210 and the left and right connection portions 231 are connected.

Like the seat cushion S1, the vertical connection portion 232 is inserted into the deep groove portion (not shown) formed in the first horizontal groove 42.

According to the vehicle seat S having the above configuration, in the seat cushion S1, the connection portion 130 connecting the first heater 110 and the second heater 120 is located at a position avoiding the partition portion 31 of the hanging groove 30. Specifically, by passing through the rear side of the compartment 31, the planar heating element 100 is not easily damaged even though it has a simple structure.

In the connecting portion 130, the front-rear connecting portion 132 crosses the first horizontal groove 32 and enters the deep groove portion 32B, but this point is the same as in the conventional case. Compared to the compartment 31, the first lateral groove 32 is less likely to be subject to a large load such as kneeling by the occupant, so the connection portion 130 is less likely to be damaged. When the left and right second heaters 120 and the central first heater 110 are connected so as to cross the compartment 31 as in the conventional case, a deep groove is used to connect the first heater 110 and the second heater 120. Two extra structures are required to pass the parts, but in this embodiment, since this structure is unnecessary, the configuration is simplified.

Further, also in the seat back S2, the connecting portion 230 connecting the first heater 210 and the second heater 220 is located at a position avoiding the compartment 41 in the hanging groove 40, specifically, below the compartment 41. By passing through the side, the planar heating element 100 is not easily damaged even though it has a simple structure.

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

Then, in the planar heating element 400, the connecting portion 430 connects the first heater 110 and the second heater 120 on the front side of the partition portion 331 through the side surface 39 on the front side of the seat cushion pad P1. 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 has an upper and lower connecting portion 432 extending downward from the front end of the first heater 110 with the same width as the first heater 110 and connecting to the left and right connecting portions 431. The connection portion 430 includes 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 have 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 connection portion 430 can warm the calf of the occupant and improve the comfort.

[Third Embodiment]
Next, the vehicle seat according to the third embodiment will be described.
In the third embodiment, only the parts different from the first embodiment will be described, and the same parts as those in the first embodiment are designated by the same reference numerals as those in the first embodiment and the description thereof will be omitted.
In the seat back S2 of the vehicle seat of the third embodiment, the partition portion 541 of the suspension groove 40 extends in the vertical direction and extends to the lower end of the seat back pad P2. Further, the hanging groove 40 includes a horizontal groove 542 that connects the upper ends of the compartments 541 in the left-right direction.

Then, in the planar heating element 600, the connecting 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 is a vertical connection portion that connects the left and right connection portions 631 that connect the left and right second heaters 220 in the left-right direction, and the upper end of the first heater 210 and the left-right connection portion 631 in the left-right direction. It has 632 and. The upper / lower connection portion 632 connects the left / right 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 connecting portion 630 is a portion where the load is not easily applied by connecting the first heater 210 and the second heater 220 through the upper side of the partition portion 541. The first heater 210 and the second heater 220 can be connected through the passage.

Although the vehicle seat S as the 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 is appropriate. Can be changed.

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

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

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

30 Hanging groove 31 Section 39 Side surface 40 Hanging groove 41 Section 100 Surface heating element 100A Resistance heating element 100B Support 110 1st heater 120 2nd heater 130 Connection part 200 Surface heating element 200A Resistance heating element 200B Support Body 210 1st heater 220 2nd heater 230 Connection part 331 Section part K1, K2 Skin P1 Seat cushion pad P2 Seat back pad P11, P21 Seat surface part P12, P22 Overhanging part S Vehicle seat

Claims (1)

With the pad
The epidermis that covers the pad and
It has a resistance heating element and a sheet-shaped support that supports the resistance heating element, and includes a planar heating element provided between the pad and the epidermis.
The pad is arranged on the left and right outer sides of the seat surface portion arranged in the center in the left-right direction, and the overhanging portion protruding toward the occupant side to support the side portion of the occupant, and the skin are suspended. It has a hanging groove, and the hanging groove includes a partition portion arranged between the seat surface portion and the overhanging portion and extending in a direction orthogonal to the left-right direction.
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 first heater. A vehicle seat having a connecting portion for connecting two heaters, wherein the connecting portion connects the first heater and the second heater through a portion avoiding the compartment.

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