JP2000125990A - Vehicle seat - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To improve cushioning property and ventilation efficiency. SOLUTION: In a seat cushion 12, a ventilation tube 18 is provided in a recess 24 formed in a seat pad 16 covered with a seat skin 14. The blower tube 18 is made of an elastically deformable rubber material.
A plurality of through holes 20 toward the seating surface of the seat cushion 12 and an air intake 18K facing downward from the seat cushion 12 are formed. An air conditioner unit 38 is connected to the air inlet 18K via a duct 34, and air blown from the air conditioner unit 38 passes through the through hole 20 of the blower tube 18 and the small diameter hole 36 of the seat cover 14,
The air is blown toward the occupant seated on the seat cushion 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle seat, and more particularly, to a vehicle seat having a blowing function.

[0002]

2. Description of the Related Art Conventionally, some vehicle seats mounted on vehicles such as automobiles have a blowing function, and an example thereof will be described below.

As shown in FIG. 7, in this vehicle seat, a seat pad 10 of a seat cushion 100 is provided.
2, a ventilation path 104 is formed, and a branch 104A of the ventilation path 104 is formed along the occupant seating surface 100A of the seat cushion 100. On the other hand, the air intake 104B of the blowing path 104 is
02 is connected to a through hole 108 formed in the seat cushion frame 106.
Also, the through hole 108 of the seat cushion frame 106
Is connected to the air inlet 104 </ b> B of the air blowing path 104 by a duct 110. As a result, the temperature-adjusted air blown from the blower (hereinafter referred to as air)
Reaches the occupant seating surface 100A of the seat cushion 100 via the duct 110 and the ventilation path 104.

[0004]

However, in such a vehicle seat, a resin film 114 having a ventilation hole 112 is disposed above a ventilation path 104 formed in the seat pad 102. I have. As a result,
In such a vehicle seat, the resin film 114 is used.
As a result, the cushioning property of the seat pad 102 may be reduced, and the occupant may feel uncomfortable when sitting on the seat cushion 100. Further, in such a vehicle seat, the branch 104A and the air intake 104B of the air passage 104 are formed directly on the seat pad 102, and a tube or the like for preventing air leakage is provided in the air passage 104. Is not installed, the seat pad 10
7 (arrow W1 in FIG. 7) leaks into the seat pad 102 from the outer peripheral portion of the airflow path 104, so that the airflow efficiency is reduced. .

An object of the present invention is to provide a vehicle seat capable of improving cushioning and blowing efficiency in consideration of the above facts.

[0006]

According to a first aspect of the present invention, there is provided a vehicle seat according to the present invention, wherein a seat skin having air permeability, a seat pad having a recess formed on a surface on an occupant contact side, And an air passage portion formed on the occupant abutment side, comprising: a tubular blowing path forming means that is elastically deformable; and blowing means for blowing air to the blowing path forming means. It is characterized by having.

Accordingly, the air blown from the blowing means moves in the blowing path forming means, and is blown out from an air passing portion formed on the occupant contact side of the blowing path forming means.
The air is blown toward the occupant through the breathable sheet skin. In addition, the pressed blowing path forming unit is elastically deformed.

According to a second aspect of the present invention, in the vehicle seat according to the first aspect of the present invention, a part of the ventilation path forming means extends along the seat skin. And

Therefore, in addition to the contents described in claim 1,
The air travels in the portion of the airflow path forming means that is branched along the sheet skin, and is blown out from an air passage formed on the occupant contact side of the airflow path forming means, and passes through the air-permeable sheet skin. Is blown to the occupant side.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a vehicle seat according to the present invention will be described with reference to FIGS.

In the drawing, the arrow FR indicates the front direction of the seat,
The arrow UP indicates the upward direction of the sheet.

As shown in FIG. 1, in the present embodiment, in a seat cushion 12 of a vehicle seat 10, a blower tube 18 as a blower passage forming means is disposed on a seat pad 16 covered with a seat cover 14. I have.

As shown in FIG. 2, the blower tube 18 is made of an elastically deformable rubber material and has a branch portion 18A extending in the front-rear direction of the seat. Branch 18A
In the vicinity of the front end portion 18B, a branch portion 18C extending left and right,
18D, and these branch portions 18C, 18D
Is bent forward. The branch 18
In the vicinity of the rear end portion 18E of A,
F, 18G are formed, and these branch portions 18F, 18G are formed.
The tip of 8G is bent rearward. Further, a branch portion 18 extending left and right is provided at a middle portion in the front-rear direction of the branch portion 18A.
H, 18J are formed, and these branch portions 18H, 18J are formed.
8J extends obliquely forward.

The front end 18B and the rear end 18E of the branch 18A.
And branches 18C, 18D, 18F, 18G, 18H,
A through hole 20 as an air passage portion is formed on the occupant contact side of each of the distal end portion, the bent portion, and the root portion of the 18J, that is, on the seating surface side of the seat cushion 12. Note that the branch 1
8A, a front end 18B and a rear end 18E, and a branch 18C.
Portions other than the through holes 20 at the respective tip portions of 18D, 18F, 18G, 18H, and 18J are closed.

An air intake 18K is formed in the middle of the branch 18A in the front-rear direction of the branch 18A so as to extend downward from the seat cushion 12. On the other hand, a concave portion 24 for arranging the blower tube 18 is formed on the upper surface of the seat pad 16.
A through hole 26 through which the air intake 18K of the 8A is inserted is formed.

As shown in FIG. 3, the distal end portion 18L of the air inlet 18K of the blower tube 18 extends from the through hole 32 formed in the seat cushion frame 30 to the lower surface side of the seat cushion frame 30. It is fixed to the lower surface side of the cushion frame 30. Also,
A flange 34A formed at the distal end of the duct 34 is connected to the distal end 18L of the air intake 18K so that air is blown into the blower tube 18 via the duct 34.

As shown in FIG. 1, the seat cushion 1
2, an air conditioning unit 38 as a blowing means is provided.
The air conditioner unit 38 supplies air into the duct 34. Note that an operation unit for operating the air conditioner unit 38 includes:
It is provided on the instrument panel or on the side of the seat cushion 30 or the like, and is operated by an occupant.

As shown in FIG. 4, the occupant contact side of the blower tube 18 is covered with a seat cover 14. The sheet skin 14 has a two-layer structure of a first layer 14A formed of a skin or the like and forming a design surface, and a second layer 14B formed of a foam material or the like. Are formed in plurality. Therefore, the air blown out from the through hole 20 of the blower tube 18 is indicated by an arrow W in FIG.
As shown in FIG. 2, the sheet passes through the second layer 14B of the sheet skin 14 and is ejected from a small-diameter hole 36 formed in the first layer 14A.

Further, as shown in FIG. 1, in the present embodiment, in the seat back 40 of the vehicle seat 10, a blower tube 46 as a blower passage forming means is provided on a seat pad 44 covered with the seat cover 14. Have been.

As shown in FIG. 2, the blower tube 46 is made of an elastically deformable rubber material, and has a branch portion 46A extending in the vertical direction of the seat. Branch 46A
In the vicinity of the upper end 46B, there is a branch 46C extending left and right,
46D are formed, and these branch portions 46C and 46D are formed.
Is bent upward and outward. The lower end 46E of the branch 46A is branched into two branches, and the branches 46F, 46 extending downward and to the left and right from the lower end 46E.
G is formed.

The upper end 46B and the lower end 46E of the branch 46A.
Further, a through hole 20 as an air passage portion is formed on the seating surface side of each tip portion of the branch portions 46C, 46D, 46F, and 46G. The upper end 46B and the lower end 46E of the branch 46A and the ends of the branches 46C, 46D, 46F and 46G other than the through holes 20 are closed.

In the middle of the branch 46A in the vertical direction,
An air intake 46H is formed toward the rear of the seat back 40. On the other hand, a concave portion 48 for arranging the blower tube 46 is formed on the front surface (occupant contact side surface) of the seat pad 44, and the branch portion 4 is formed at the bottom of the concave portion 48.
A through hole 50 through which the air inlet 46H of 6A is inserted is formed.

The distal end of the air inlet 46H of the blower tube 46 is connected to the air conditioner unit 38 via the duct 34, like the distal end 18L of the air inlet 18K of the blower tube 18 shown in FIG. From the air conditioner unit 38 via the duct 34
Is supplied with air.

As shown in FIGS. 5 and 6, each branch of the blower tube 18 and the blower tube 46 is extended to a position where the through hole 20 is hardly closed by the seated occupant 60.

Next, the operation of the present embodiment will be described.

In the vehicle seat according to the present embodiment, when an occupant operates an operating portion disposed on an instrument panel or a side portion of the seat cushion 30, etc., the air conditioner unit 38 is operated, and the air conditioner unit 38
Inside, air (temperature-adjusted air adjusted to a predetermined temperature) is supplied. This air is blown to both the blower tube 18 and the blower tube 46 via the duct 34.

At this time, the air blown into the duct 34 is blown directly from the duct 34 to the air inlet 18K of the blower tube 18, as indicated by an arrow W in FIG. Similarly, the air blown into the duct 34 is:
Air inlet 46H of tube 46 directly from duct 34
It is blown to. As a result, the air does not leak into the seat pads 16 and 44 unlike the prior art, so that the blowing efficiency can be improved.

The air blown from the duct 34 to both the blower tube 18 and the blower tube 46 is blown out from the through-hole 20 formed in the blower tube 18 and the blower tube 46, and the second layer 14B of the sheet skin 14 is formed. Through the small-diameter hole 36 formed in the first layer 14A.
It is blown toward.

In this embodiment, as shown in FIGS. 5 and 6, the occupant 60 controls the seat pad 16 of the seat cushion 12 and the seat pad 4 of the seat back 40.
When 4 is pressed, the air blow tubes 18 and the air blow tubes 46 are elastically deformed together with the seat pads 16 and 44. As a result, the cushioning property can be improved as compared with the configuration in which the resin film is provided on the seat pad as in the related art. Further, the blower tube 18 and the blower tube 46
Is elastically deformed, the durability of the blower tube 18 and the blower tube 46 can also be secured.

In the present embodiment, the blower tube 18
The temperature of the occupant 60 can be easily adjusted by adjusting the position, number, and size of the through holes 20 formed in the blower tube 46.

In this embodiment, as shown in FIGS. 5 and 6, each branch of the blower tube 18 and the blower tube 46 is extended to a position where it is difficult for the seated occupant 60 to close the through hole 20. As a result, the temperature of the seat surface can be adjusted over a wide range, and the through-hole 20 formed at a position where it is difficult for the seated occupant 60 to close the seat.
Air can be blown to the occupant 60 from the
Temperature adjustment to 0 can be performed more effectively.

In the above, the present invention has been described in detail with respect to a specific embodiment. However, the present invention is not limited to such an embodiment, and various other embodiments are included in the scope of the present invention. It is clear to a person skilled in the art that is possible. For example, in the present embodiment, the blowing tubes 18 and 46 and the concave portions 24 and 48 as the blowing path forming means are provided.
Is a branched shape having each branch portion. However, the shapes of the blower tubes 18 and 46 and the concave portions 24 and 48 as the blower path forming means are not limited to the branched shape, and the blowability can be achieved without impairing the cushioning property of the seat. If so, other shapes such as a linear shape and a curved shape may be used. Further, the blower tubes 18, 46
The sectional shape and the sectional area of are not limited to the present embodiment.

In the present embodiment, both the blower tube 18 and the blower tube 46 are provided. Instead, only one of the blower tube 18 and the blower tube 46 is provided. It is good also as composition. Also,
The air blower tube 18 and the air blower tube 46 may be connected to independent air conditioner units 38, respectively.
Further, in the present embodiment, the air conditioner unit 38 is used as the blowing means, but instead of the air conditioner unit 38,
A configuration in which the duct 34 is connected to a defroster for controlling the temperature of the passenger compartment as a blowing means may be adopted.

Further, in the present embodiment, the through-hole 20 as the air passage portion is provided with the blower tube 18 and the blower tube 4.
However, instead of the through hole 20, another air passage portion such as a slit, a notch, or a nozzle may be formed in the blower tube 18 and the blower tube 46. Further, the size, shape, forming position, number, and the like of the through holes 20 are not limited to the present embodiment.

In the present embodiment, the sheet skin 14 has a two-layer structure, but the sheet skin is not limited to a two-layer structure, and may have another structure such as a one-layer structure or a three-layer structure. Also,
The sheet skin 14 may be made of a member having air permeability such as cloth. In this case, it is not necessary to form small holes for ventilation in the sheet skin. The present invention is also applicable to a bench-type vehicle seat on which a plurality of occupants can sit.

[0036]

According to the vehicle seat of the present invention, since the air blown from the blowing means moves in the blowing path forming means, the air does not leak into the seat pad during the blowing, thereby improving the blowing efficiency. can do. Also,
When the occupant presses the seat pad and the ventilation path forming means, the ventilation path forming means is elastically deformed together with the seat pad, so that durability can be ensured and the cushioning property of the seat can be further improved. Has an effect.

According to the second aspect of the present invention, in addition to the effect of the first aspect, the sheet surface moves over a wide area because it moves within the blowing path forming means extending along the sheet skin. Has an excellent effect that the temperature can be adjusted.

[Brief description of the drawings]

FIG. 1 is a perspective view of a vehicle seat according to an embodiment of the present invention as viewed from diagonally forward of the vehicle.

FIG. 2 is an exploded perspective view of the vehicle seat according to one embodiment of the present invention, as viewed obliquely from the front of the vehicle.

FIG. 3 is an enlarged sectional view taken along line 3-3 in FIG.

FIG. 4 is an enlarged sectional view taken along line 4-4 in FIG. 1;

FIG. 5 is a schematic side cross-sectional view showing an occupant seated state of the vehicle seat according to one embodiment of the present invention.

6 is a sectional view taken along line 6-6 in FIG.

FIG. 7 is a cross-sectional view corresponding to FIG. 3, showing a seat cushion of a vehicle seat according to a conventional embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Vehicle seat 12 Seat cushion 14 Seat skin 16 Seat pad 18 Ventilation tube (Ventilation path formation means) 18K Air intake 20 Through hole (Air passage part) 24 Depression 34 Duct 36 Small diameter hole 38 Air conditioner unit (Blowing means) 40 Seat Back 44 seat pad 46 blower tube (blower path forming means) 46H air intake 48 recess

────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission Date] February 8, 2000 (200.2.8)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0006

[Correction method] Change

[Correction contents]

[0006]

According to a first aspect of the present invention, there is provided a vehicle seat according to the present invention, wherein a seat skin having air permeability, a seat pad having a recess formed on a surface on an occupant contact side, And an air passage portion formed on the occupant abutment side, comprising: a tubular blowing path forming means that is elastically deformable; and blowing means for blowing air to the blowing path forming means. Wherein the blowing path forming means includes the seat pad
Is branched along the back of the sheet skin from approximately the center of
And said that you are.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0007

[Correction method] Change

[Correction contents]

[0007] Therefore, the air blown from the blowing means flows from substantially the center of the seat pad along the back surface of the seat skin.
The air is then blown from an air passage portion formed on the occupant contact side of the air flow path forming means, and is blown toward the occupant through a breathable sheet skin. In addition, the pressed air blowing path forming means,
Elastically deform.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Deleted

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0009

[Correction method] Deleted

[Procedure amendment 6]

[Document name to be amended] Statement

[Correction target item name] 0015

[Correction method] Change

[Correction contents]

In the middle of the branch 18A in the front-rear direction,
The air intake 18 extends downward from the seat cushion 12.
K is formed. On the other hand, a concave portion 24 for disposing the blower tube 18 is formed on the upper surface of the seat pad 16, and a through hole 26 through which the air intake 18K of the branch portion 18A is inserted is formed at the bottom of the concave portion 24. Has been established.

[Procedure amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0032

[Correction method] Change

[Correction contents]

In the above, the present invention has been described in detail with respect to a specific embodiment. However, the present invention is not limited to such an embodiment, and various other embodiments are included in the scope of the present invention. It is clear to a person skilled in the art that is possible. For example, not limited to the present embodiment also cross-sectional shape and cross-sectional area of the feed air tube 18, 46.

[Procedure amendment 8]

[Document name to be amended] Statement

[Correction target item name] 0036

[Correction method] Change

[Correction contents]

[0036]

According to the vehicle seat of the present invention, the air blown from the blowing means is substantially equivalent to the seat pad.
Since it moves in the air blowing path forming means branched from the center along the back surface of the seat skin, it does not leak into the seat pad during air blowing, so that air blowing efficiency can be improved and the seat can be spread over a wide range. Adjustable surface temperature
It has an excellent effect of becoming effective. Further, when the occupant presses the seat pad and the airflow path forming means, the airflow path forming means is elastically deformed together with the seat pad, so that durability can be ensured and the cushioning property of the seat can be further improved. Has excellent effects.

[Procedure amendment 9]

[Document name to be amended] Statement

[Correction target item name] 0037

[Correction method] Deleted

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Tsuyoshi Aso 1 Toyota Town, Toyota City, Aichi Prefecture Inside Toyota Automobile Co., Ltd. (72) Inventor Teiji Inada 3-10 Fukuura, Kanazawa-ku, Yokohama-shi, Kanagawa Japan F term in the company (reference) 3B084 JG02 3B087 DE03 DE10

Claims (2)

[Claims] 1. A seat having air permeability, a seat pad having a recess formed on a surface on an occupant contact side, and an air passage portion disposed in the recess and formed on the occupant contact side. A vehicle seat, comprising: an elastically deformable tubular air flow path forming means; and air blowing means for blowing air to the air flow path forming means. 2. The vehicle seat according to claim 1, wherein a part of the air blowing path forming means extends along the seat skin.