JP2002017510A - Automotive ventilation sheet - Google Patents

Abstract

(57) [Problem] To provide a vehicle ventilation sheet to which seating detection performance by a seating sensor can be added. SOLUTION: Even if a seating sensor 11 is provided, the ventilation path 1
The air from the air vent 1 is formed in the seating sensor 11.
3 and reaches the air distribution means 12, where the air is distributed to a predetermined area by the air distribution means 12 and is blown out to the hips of the occupant. Can be achieved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilation sheet for automobiles, which can ensure air permeability by blowing air from the upper surface of a seat cushion.

[0002]

2. Description of the Related Art Conventionally, for example, Japanese Utility Model Publication No. 6-26208
As disclosed in Japanese Unexamined Patent Publication No. Hei 6-52614, air at room temperature or temperature-adjusted air is blown out from the upper surface of the seat cushion to secure air permeability around the hip portion of the occupant. There is a ventilating sheet that can be heated and cooled (air blown at a controlled temperature also has the effect of directly cooling and heating the occupant).

[0003] In this kind of ventilation sheet, a ventilation passage penetrating vertically is formed in a pad material inside a seat cushion covered by a cover, and a duct capable of blowing air is connected to a lower portion of the ventilation passage. An air distribution groove is formed on the upper surface of the material to spread the air blown out from the vent. The air spread through the air distribution groove passes through the cover and is blown out from the seating surface toward the occupant's hips, so that ventilation can be improved and comfortable air permeability can be maintained.

On the other hand, recently, in order to detect whether or not an occupant is seated on a seat cushion, a film-shaped seating sensor may be installed on an upper surface of a pad material inside the seat cushion. Then, the presence / absence of the seated state of the occupant is detected by the seating sensor, and the presence / absence of the seat belt is detected by another sensor, and the deployment timing of the airbag is controlled.

[0005]

However, when the seating sensor is added to the upper surface of the pad material in this manner, the seating sensor blocks the air distribution groove and the air passage of the pad material, and the seat has a ventilation performance. Is hindered. Therefore, conventionally, in the case of a breathable sheet in which a ventilation path is formed in a pad material, it is difficult to add a seating sensor, and improvement is required.

The present invention has been made by paying attention to such a conventional technology, and provides an automobile ventilation sheet which can improve the air permeability of the ventilation sheet when a seating sensor is added. is there.

[0007]

According to the first aspect of the present invention,
An air passage for ventilation that penetrates up and down is formed in the pad material of the seat cushion, a film-shaped seating sensor having an air hole corresponding to the air passage is provided on the upper surface of the pad material, and a seat pressure is provided on the upper surface of the seating sensor. Even after receiving the air, a ventilation means capable of distributing the air by spreading the air from the ventilation hole to a predetermined area without closing the ventilation hole was provided, and the upper surface of the ventilation means was covered with a cover having air permeability.

According to the first aspect of the present invention, even if the seating sensor is provided, air from the ventilation path passes through the ventilation hole of the seating sensor to reach the air distribution means, and is expanded to a predetermined area by the air distribution means. As a result, the air is blown out to the occupant's hips, so that the detection performance of the seating sensor and the ventilation performance of the ventilation path can both be achieved.

According to the second aspect of the present invention, the air distribution means is formed of a material which has cushioning properties, is hardly crushed by seat pressure, and has air permeability as a whole.

According to the second aspect of the present invention, since the air distribution means has a cushioning property, but is hardly crushed by seat pressure and is formed of a material having air permeability as a whole, even when the occupant is seated. In addition, the ventilation hole of the seating sensor is kept open, and the air from the ventilation hole can be surely spread and distributed.

According to the third aspect of the present invention, the seating sensor and the air distribution means are housed in a recess formed on the upper surface of the pad material.

According to the third aspect of the present invention, since the seating sensor and the air distribution unit are housed in the recess formed on the upper surface of the pad material, the seating sensor and the air distribution unit do not shift.

[0013] In the invention according to claim 4, the vent hole is located substantially at the center of the upper surface of the seat cushion.

According to the fourth aspect of the present invention, since the ventilation hole is located substantially at the center of the upper surface of the seat cushion, the ventilation efficiency with respect to the hip portion of the occupant is high.

[0015]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
This will be described with reference to FIG. This seat is a front seat of an automobile, and its seat cushion 1 is devised. The lowermost side of the seat cushion 1 is formed by a cushion frame 2. On the rear side of the cushion frame 2, a plurality of S-shaped springs 3 for enhancing cushioning properties are suspended. The duct 4 is fixed below the S-shaped spring 3 by band means (not shown).

A temperature control device 5 using a Peltier element or the like is provided at the end of the duct 4, and an air outlet 6 is formed upward on the upper surface thereof. A blower motor 7 is provided in the middle of the duct 4 so that air can be forcibly sucked from the end of the duct 4 and blown toward the temperature control device 5.

A pad member 8 having the outer shape of the seat cushion 1 is provided above the cushion frame 2. The pad material 8 is made of a cold cure urethane pad, and a concave portion 9 is formed in a predetermined trapezoidal region on the upper surface thereof. An air passage 10 penetrating vertically is formed substantially at the center of the pad material 8 in the recess 9, and the air outlet 6 of the temperature control device 5 is inserted into a lower portion of the air passage 10. ing.

A seating sensor 11 having the same shape and a ventilation material 12 as "air distribution means" are housed in the recess 9 of the pad material 8, and the upper surface of the ventilation material 12 is flush with the upper surface of the pad material 8. Has become. The seating sensor 11 has a structure in which cells and wires for pressure sensing are incorporated in a flexible film sheet (PET) as a support. The terminal of the wiring of the seating sensor 11 is pulled out from the rear side,
It is connected to a detector not shown. At the position of the seating sensor 11 corresponding to the ventilation path 10, the ventilation path 1
A ventilation hole 13 having the same shape as the hole 0 is formed.

The ventilation material 12 has a plate shape having a thickness substantially corresponding to the concave portion 9 and is formed of a space fabric which is a material having cushioning properties and high air permeability as a whole. Although having a cushioning property, the ventilation material 12 is not easily crushed by the seat pressure of the occupant, and does not block the ventilation hole 13 of the seating sensor 11. In addition, since it has air permeability, the air that has entered the air permeable material 12 spreads over the entirety and is blown out while being diffused from the entire upper surface thereof.

The entire seat cushion 1 is covered by a cover 14 having air permeability. Urethane (Scott foam) 15 (see FIG. 4) having good air permeability is interposed in a portion corresponding to the upper surface of the cover 14 to further enhance the cushioning property.

According to this embodiment, the blower motor 7
Is introduced into the duct 4 and heated or cooled by the temperature control device 5,
The air in the ventilation passage 10 passes through the ventilation hole 13 of the seating sensor 11, reaches the ventilation material 12, is expanded to a predetermined area by the ventilation material 12, and is blown out to the hip portion of the occupant. Therefore, ventilation can be improved and comfortable air permeability can be maintained. In particular, in this embodiment, the ventilation holes 13
Is located substantially at the center of the upper surface of the seat cushion 1, so that the ventilation efficiency for the hip portion of the occupant is high.

A seating sensor 11 is also provided on the upper surface of the pad member 8.
Is formed, so that it does not interfere with air blowing. Since the seat sensor 11 can detect whether or not the occupant is seated on the seat cushion 1, the deployment timing of the airbag (not shown) is controlled by detecting the presence or absence of the seat belt by using another sensor. it can. As described above, in this embodiment, it is possible to achieve both the seating detection performance of the seating sensor 11 and the ventilation performance of the ventilation path 10.

Further, in this embodiment, the seating sensor 1
1 and the ventilation material 12 are accommodated in the recess 9 of the pad material 8, so that their displacement due to seat pressure of the occupant can be prevented.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a ventilation sheet according to an embodiment of the present invention.

FIG. 2 is a plan view showing the seat cushion of FIG. 1;

FIG. 3 is an exploded perspective view showing the seat cushion of FIG. 1;

FIG. 4 is a sectional view showing the seat cushion of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Seat cushion 2 Cushion frame 4 Duct 5 Temperature control device 6 Air outlet 7 Blower motor 8 Pad material 9 Concave part 10 Ventilation path 11 Seating sensor 12 Vent material (air distribution means) 13 Vent hole 14 Cover 15 Urethane

Claims (4)

[Claims] An air passage for ventilation is formed in a pad material of a seat cushion so as to penetrate vertically, and a film-shaped seating sensor having an air hole corresponding to the air passage is provided on an upper surface of the pad material. A ventilation means which does not block the ventilation hole even when receiving a seat pressure on the upper surface of the ventilation hole and which can distribute the air from the ventilation hole to a predetermined area so that air can be distributed; An automotive ventilation sheet, characterized by being covered with a cover. 2. The vehicle ventilation sheet according to claim 1, wherein the air distribution means is formed of a material which has cushioning properties, is hardly crushed by seat pressure, and has air permeability as a whole. Characteristic automotive ventilation sheet. 3. The vehicle ventilation sheet according to claim 1, wherein the seating sensor and the air distribution means are housed in a concave portion formed on an upper surface of the pad material. Sheet. 4. The vehicle ventilation sheet according to claim 1, wherein the ventilation hole is located substantially at the center of the upper surface of the seat cushion. .