JPH057970Y2 - - Google Patents

Description

[Detailed description of the invention] <<Industrial application>> This invention is a skin-integrated type seat installed in automobiles, etc., and is particularly designed to be a breathable sheet in which air is forcibly blown out from the seat surface side. Regarding.

《Prior Art》 Seats installed in automobiles and the like need to have cushioning properties and ventilation to improve seating comfort for the occupant, and at the same time, must also be able to hold the occupant in place.
However, the more the seater's ability to hold the seater is improved, the more the lower surface and side surfaces of the seater's buttocks and the like come into close contact with the seat. For this reason, the ventilation between the seater and the seat surface is poor, and when the temperature is high, the seater tends to get stuffy and sweat, giving a feeling of discomfort.

This problem is noticeable in so-called skin-integrated sheets, which are made by injecting foamed synthetic resin into a mold in which a skin material is placed, foam-molding the cushioning pad, and at the same time integrating the pad into the skin material. It's summery.

Therefore, as a conventional countermeasure, the seat pad is generally covered with a breathable skin material, and air-conditioned air is forcedly conveyed from the back side of the seat pad using a fan, etc., from the back side of the seat pad to the seat surface of the skin material. A breathable sheet having a structure that forcibly blows out air has been proposed. When constructing such a breathable sheet, a breathable material is used for the skin material, and the same can be said for the seat pad.

[Problems that the invention aims to solve] However, in the case of integrated skin sheets, if a breathable material is used as the skin material, wading of slab urethane or the like is provided on the back side of the skin material so that the foamed resin seeps out from the skin material. Furthermore, after foam molding, an impregnated layer is formed by the foamed resin that has penetrated and hardened into the wading, resulting in almost no air permeability. For this reason, there was a problem in that the above-mentioned breathable sheet could not be easily adopted.

In this case, specific measures include, for example,
As shown in Japanese Patent No. 144551, there is known a device in which a plurality of through-holes are provided in the skin material, a mouthpiece is fixed to the through-holes, and an air passage communicating with the mouthpiece is provided in the pad. However, with this method, not only does it take a lot of man-hours to attach the mouthpiece to the through hole, but it also requires the use of a gasket or the like to prevent the foamed resin from seeping out from the attachment part.
This results in a problem of high cost.

As a result of various studies on this problem, the present applicant found that it is possible to easily create a ventilation structure by preventing the impregnated layer from forming locally in the wading even with an integrated skin sheet, and developed the present invention. I've reached it.

<Means for solving the problem> In other words, the present invention involves placing a breathable skin material lined with wadding in a mold, injecting foamed synthetic resin, and foam-molding the cushioning pad at the same time. In the sheet integrated with the skin material, an air bag having a ventilation hole on the top surface is attached to a fitting hole provided on the back side of the wadding, and the pad is connected to the air bag and The gist is that a ventilation tube with its free end protruding from the back side of the pad is inserted.

<<Function>> According to the above structure, the air bag may be attached to the fitting hole of the wading when foam-molding the cushioning pad, and the free end of the tube may be locked to the upper mold of the molding die. Just leave it there. If foam molding is carried out in this state, the skin material will be integrated into the pad to be foam molded, and the air bag and tube will be easily inserted.

In this case, an impregnated layer is formed on the wading lined with the skin material by infiltrating and curing the foamed synthetic resin. However, an air bag is installed inside the fitting hole provided in the wadding, so an impregnated layer cannot be formed, and a ventilation tube connected to the air bag is inserted into the pad, so air is forced into the bottom of the pad. When the air is absorbed, it is blown out from the skin material to the surface through the tube and air bag.

<<Example>> Hereinafter, the breathable sheet of the present invention will be described with reference to the drawings.

FIG. 1 is a sectional view showing the entire breathable sheet, and FIG. 2 is a partial sectional view of the sheet cushion.

The breathable sheet 1 shown in the figure mainly includes a seat cushion 2 and a seat bag 3, which are integrated into the skin, and a stretchable duct 6 that connects the air chamber 4 of the seat cushion 2 and the air chamber 5 of the seat bag 3.
It consists of a fan 7 for blowing air provided in the air chamber 4, and the like.

The seat cushion 2 also includes a generally box-shaped frame 8, a plurality of S springs 9 stretched between both inner walls of the frame 8, and a pad 10 made of a foam molded body supported by the frame 8 and the S springs 9. , a skin material 13 in which a breathable skin 11 is lined with wading 12, and an air bag 1 attached to the wadding 12.
4, and a blower fan 7 is installed at the center of the lower surface of the frame 8.

The pad 10 is made of ordinary foamed urethane resin whose main component is polyether polyol, polyisocyanate, or the like.

The skin material 13 includes a skin 11 such as fabric,
It consists of wading 12 made of slab urethane or the like laminated to a skin 11. Further, as shown in FIGS. 2 and 3, a fitting hole 12a is provided in the wadding 12, and an air bag 14 is mounted in the fitting hole 12a. The fitting holes 12a are provided at a plurality of locations in the seat side portion. The air bag 14 is made of a relatively soft rubber material and has a roughly box-like shape as shown in FIG.
4b is formed. The upper peripheral edge 14c of the air bag 14 is set to be slightly larger than the fitting hole 12a, so that it is tightly fitted when pushed into the fitting hole 12a. Further, a ventilation tube 18 is connected to the lower surface of the air bag 14, and a tube 18 for ventilation is connected to the bottom surface of the air bag 14.
Air is fed into the air bag 14 from 8. Note that the free end of the tube 18 is provided with a flap-shaped receiving portion 18a, making it easy to suck in air.

These pads 10, skin material 13, air bag 1
4 and the tube 18 are integrated at the same time as the pad 10 is foam-molded, and an example thereof will be explained next.

After the skin material 13 is placed in the lower mold of the mold, the air bag 14 is installed in the fitting hole 12a. In this case, the air bag 14 is fitted into the fitting hole 12a without any gaps due to its own elasticity and the elastic deformation of the wrapping 12, but it may also be attached using an adhesive such as hot melt.

Then, when clamping the upper mold to the lower mold, the receiving part 18a of the tube 18 is engaged with the molding surface of the upper mold, and then the foamed synthetic resin that has been clamped is injected and the pad 10 is foam-molded. Foam molded pad 10
As shown in FIG. 3, the skin material 13 and the pad 10 are integrated, and the air bag 14 and the tube 18 are inserted into the pad 10.

The skin material 13 is an impregnated layer 1 formed by infiltrating the foaming synthetic resin into the lining 12 and hardening it.
2b does not provide air permeability, but since no impregnated layer is formed inside the fitting hole 12a, which is covered with the air bag 14, it has local air permeability. Therefore, for example, when air is blown through the opening of the receiving portion 18a of the tube 18, the air reaches the inside of the air bag 14 and is efficiently ejected onto the surface of the skin material 13 through the ventilation hole 14b of the air bag.

This molded body is made of the seat frame 8 and S
After the pad 10 is held by the spring 9, the end portion 13a of the skin material 13 is fixed to the lower part of the seat frame 8 by means such as a hook ring (not shown).

Next, the lower surface of the seat foot 8 is provided with an opening 8a to which the fan 7 is attached. The blowing fan 7 is a unit in which blades 7a provided in a housing, an electric motor 7b, a filter, etc. are arranged, and is attached to the opening 8a via bolts and nuts (not shown). ing. Further, a switch for the fan 7 is provided on the side of the seat cushion 2, and the electric motor 7b can be started and stopped by the occupant turning the switch ON and OFF. When the electric motor 7b is started, the blade 7a rotates, and this rotation draws air into the air chamber 4 from the outside. The sucked air then reaches the inside of the air bag 14 from the tube 18 of the pad 10 and is ejected onto the surface of the skin material 13. This allows for a comfortable sitting experience and effectively prevents stuffiness and sweating.

Further, a part of the air sucked by the fan 7 reaches the air chamber 5 of the seat bag 3 through the duct 6, and enters the inside of the air bag 16 having a tube 19 inserted into the pad 15 of the seat bag 3 and a ventilation hole. The water is sprayed through the surface of the skin material 17.

Note that, like the seat cushion 2, the seat bag 3 is also made by placing a breathable skin material 17 whose skin is lined with wadding in a mold, setting an air bag 16 and a tube 19, and injecting foamed synthetic resin into the pad. Needless to say, the pad 15 is formed into a skin-integrated type in which the pad 15 is formed into a skin material 17 at the same time as the pad 15 is foam-molded.

In the above example, the wading 12
Although the fitting hole 12a is made to pass through the wading 12, the fitting hole 12a does not need to be formed through the wadding 12. For example, even if it is concave, it is possible to form an impregnated layer by infiltrating and curing the foamed synthetic resin. can be sufficiently prevented.

Moreover, it goes without saying that the attachment parts of the air bags 14 and 16 can be arbitrarily determined in addition to this embodiment according to the seat design.

<<Effect of the invention>> As explained above, according to the invention, a fitting hole is provided in the wading, an air bag having a ventilation hole is attached, and the inside of the fitting hole in contact with the air bag is sealed during foam molding. In addition to making it impregnated,
I inserted a ventilation tube into the pad, so
Air can be blown out from the lower part of the pad to the surface of the skin material through the tube and the air bag, and even if the sheet is an integrated skin type, local ventilation can be easily ensured in the required areas.

In addition, since the air bag is sufficiently soft, there is no risk of giving a feeling of a foreign body even if the seater's body comes into contact with it through the skin material. Moreover, the degree of air permeability can be easily changed by changing the diameter of the tube, the size of the air bag, the ventilation holes, etc., so it is easy to create an optimal design depending on the seat.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view showing the entire breathable sheet to which the present invention is applied, Fig. 2 is a partial cross-sectional view showing the seat cushion in the left-right direction, and Fig. 3 is an enlarged view showing part A in Fig. 2. , FIG. 4 is a partially cutaway perspective view showing the air bag. 1... Breathable sheet, 2... Seat cushion, 3... Seat bag, 4, 5... Air chamber, 1
3, 17... Skin material, 12... Wading, 1
0,15...Putted, 14,16...Air bag,
14b...Vent hole, 18, 19...Ventilator tube.

Claims (1)

[Scope of utility model registration request] A breathable skin material lined with wadding is placed in a mold, a foamed synthetic resin is injected, a cushioning pad is foam-molded, and the pad is simultaneously integrated with the skin material. An air bag having a ventilation hole on the top surface is attached to a fitting hole provided on the side, and a ventilation tube connected to the air bag and having a free end protruding from the back side of the pad is inserted into the pad. A breathable sheet that is characterized by: