JPH057971Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention is a seat for a vehicle such as an automobile, in particular, forcibly circulating air in the seat portion of the seat to improve ventilation between the seat occupant and the seat. The present invention relates to a breathable vehicle seat that provides the following properties.

[Prior Art] In a seat for a vehicle such as an automobile, it is necessary to improve the cushioning properties and breathability of the seat to improve sitting comfort for the seater, and at the same time, to improve the ability to hold the seater. However, the more the ability to hold the seater is improved, the more the bottom and side surfaces of the seater's buttocks and the like come into close contact with the seat surface. For this reason, the ventilation between the seater and the seat surface is poor, and on hot days, the seater is likely to sweat, causing discomfort.

Therefore, in conventional vehicle seats, a large number of ventilation holes are provided in the seat pad, and the seat pad is covered with a breathable skin material.
In addition, a so-called breathable vehicle seat has been proposed, which has a structure in which air is forced into the back side of the seat pad using a fan or the like, and the air is forcibly blown out from the seat surface through the ventilation holes and the upholstery. This breathable vehicle seat has a structure that only allows air to be blown out from the seat surface.

[Problem that the invention aims to solve] For this reason, in areas where a large amount of body pressure is applied or where body pressure is applied over a wide range, it becomes difficult for air to blow out, resulting in poor ventilation. I had a problem where I felt less comfortable.

The present invention was devised in view of the above-mentioned problems, and its purpose is to provide a breathable vehicle seat having a structure capable of improving breathability.

[Means for Solving the Problems] In order to achieve the above object, the present invention includes a breathable seat pad whose outer surface is covered with a breathable skin material, and an air chamber on the back surface of the seat pad. A breathable vehicle seat in which air is provided and forced into the air chamber and is ejected onto the seat surface through the seat pad and the skin material, wherein one end opening side communicates with the back surface of the skin material corresponding to the seat portion. and a blower which introduces outside air into the air chamber from the one end opening side through the skin material and into the air chamber through the duct. be.

[Function] According to the above configuration, the air once blown out from inside the seat onto the seat surface can be sucked into the air chamber again via the duct and the blower. This suction forms a ventilation path that circulates within the sheet and on the surface of the sheet. Therefore, even when body pressure is applied over a wide range, a circulating air flow is forcibly formed between the seater and the seat surface within the area where body pressure is applied. .

[Example] Hereinafter, an example of the present invention will be described in detail using the drawings.

1 and 2 show an embodiment of a breathable vehicle seat to which the present invention is applied.

In the figure, a seat 1 is broadly composed of a seat cushion section 2, a seat back section 3, a headrest 4 disposed above the seat back section 3, and the like.

In the seat cushion part 2, a plurality of springs 12 are provided on a flange part (not shown) of a pan frame 5 formed in a dish shape, and the seat pad 6 is stacked on the springs 12. ing. In addition, the upper surface of the seat pad 6 is covered with a breathable skin material 7, and
The peripheral end portion 7a of this skin material 7 is the pan frame 5.
is fixed with a bog ring 13. Further, the seat cushion portion 2 is provided with a blower 8 and a duct 14 for forced ventilation.

Seat pad 6 placed on pan frame 5
is placed on a spring 12, and an air chamber 11 is formed between it and the pan frame 5 in the placed state. In addition, this seat pad 6
is made of breathable fiber-based pad material, such as polyester short fibers that are steam-cured with a urethane-based binder. It may also be formed as a sheet pad material. Further, the seat pad material 6 is provided with a plurality of through holes 6a that are vertically penetrated therethrough corresponding to the portions of the seat portion 15 where the seater 20 sits. A part of the duct 14 is arranged in this through hole 6a.

That is, the duct 14 has a main body part 14a arranged along the lower surface of the seat pad 6 in a substantially grid-like state, and a plurality of ends each extending upward from the upper surface of the main body part 14a corresponding to the through hole 6a. The cylindrical portion 14b is integrally formed. Further, the tips of the one-end cylindrical portion 14b are open as one-end openings 14c, and the blower 8 is attached to the other-end opening 14d formed in a part of the main body portion 14a. The duct 14 is attached by press-fitting the one end cylindrical portion 14b into the through hole 6a. In addition, in this attached state, one end opening 14c is in contact with the back surface of the skin material 7, and conversely, the other end opening 14d is in contact with the blower 8.
It is opened into the air chamber 11 through.

Next, in the blower 8, blades 18 and an electric motor 19 are disposed in a cylindrical housing 17 that communicates with the other end opening 14d, and when the electric motor 19 is driven, the blades 18 rotate together and move inside the duct 14. of air can be forcibly blown out into the air chamber 11. This electric motor 19 can be started and stopped and its speed can be adjusted to high, medium, and low by a switch placed near the seat 1, and can be selected in both forward and reverse directions by the switch. It is now possible to switch.

In the seat 1 configured as described above, when the electric motor 19 is rotated forward and the blower 8 is driven when the ventilation in the buttocks of the seater 20 is poor and the person feels uncomfortable, the inside of the duct 14 is of air is forcibly blown out into the air chamber 11. Then, the air pressure inside the duct 14 becomes low, and as a result, the air on the seat surface is sucked into the duct 14 from the opening 14c at one end through the skin material 7, and this air passes through the opening 14d at the other end and the blower 8 to the air chamber. 11 are blown out in sequence. On the other hand, air chamber 11
As air is blown into the seat from the blower 8, the air pressure becomes high, and the blown air passes through the seat pad 6 and the skin material 7, and is sequentially blown out from the seat surface. On the other hand, when the electric motor 19 is reversed and the blower 8 is driven, the air in the air chamber 11 is sucked in through the duct 14 and is sequentially blown out from the seat surface through the seat pad 6 and the skin material 7. At the same time, the surface material 7 and the seat pad 6
Air is drawn into the air chamber 11 through the air chamber 11, thereby forming an air circulation path on the seat surface of the seat portion 15. That is, an air circulation path is formed on the seat surface of the seat part 15 by the intake through the duct 14 and the discharge from the air chamber 11, and ventilation is obtained between the seat part 15 and the seater 20, and moisture is removed. can be removed. Therefore, in this seat, the seat portion 15
Even when body pressure is applied over a wide range, an air flow is forcibly formed between the seater 20 and the seat surface of the seat portion 15 within the area where body pressure is applied. Therefore, ventilation can be effectively obtained. This improves sitting comfort.

In addition, in the above embodiment, the seat cushion portion 2
Although the structure applied to the seat back portion 3 has been disclosed,
It can also be applied in the same way.

[Effects of the invention] As explained above, according to the breathable vehicle seat according to the invention, the air once blown out from inside the seat onto the seat surface can be drawn back into the air chamber through the duct and the blower. This suction creates a ventilation path that circulates within the sheet and on the sheet surface. Therefore, even when body pressure is applied over a wide range, a circulating air flow is forcibly formed between the seater and the seat surface within the area where body pressure is applied. This provides good ventilation and improves seating comfort.

[Brief explanation of the drawing]

Fig. 1 is an external perspective view showing an example of a breathable vehicle seat according to the present invention, and Fig. 2 is a -
FIG. 3 is a schematic cross-sectional view taken along a line. 1... Seat, 6... Seat pad, 7... Skin material, 8... Air blower, 11... Air chamber, 14...
Duct, 14a...opening at one end, 14b...opening at the other end.

Claims (1)

[Scope of utility model registration request] The outer surface of the breathable seat pad is covered with a breathable skin material, and an air chamber is provided on the back surface of the seat pad, and the air that is forced into the air chamber passes through the seat pad and the skin material to form a seat. A duct for air permeable to a surface of the vehicle, the duct having one open end communicated with the back surface of the skin material corresponding to the seat, and the other open end being open to the air chamber;
A ventilated vehicle seat comprising: a blower that takes outside air through the skin material and into the air chamber from the one-end opening side through the duct.