JPH0423690Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention is a vehicle seat such as an automobile, in which air is forcibly blown out from the seat side to improve ventilation between the seat and the occupant. The present invention relates to a breathable vehicle seat.

[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 holding surface through the ventilation holes and the skin material.

In addition, as conventional examples applied to armrests etc. attached to seats, there is a technique of providing a duct part and an air outlet in the armrest as known from Japanese Patent Publication No. 63-23927, and a technique of providing a duct part and an air outlet in the armrest as known from Japanese Patent Publication No. 63-25616. There is a known technique in which the position of the air outlet provided in the armrest can be changed by rotating the armrest.

Furthermore, although both of the above technologies introduce air from outside the armrest through a duct, etc., Japanese Utility Model Application Publication No. 49-42626 also proposes a technology in which a blower having a fan or the like is built into the pillow of the seat. ing.

[Problems to be solved by the invention] However, in the conventional technology as described above, air is blown to the seated person from the armrest or pillow, and the seat holding surface that is in contact with the seated person's body The effect of air blowing is extremely limited because the relationship between In other words, although the air blowing position is adjusted by the rotational height of the armrest, the air cannot be blown from the side of the seat holding surface that is most prone to sweating, and the comfort level of the occupants cannot be fully satisfied. In addition, in order to obtain air from the seat holding surface side, it is possible to install a blower inside the seat cushion or seat back, but in this case, if the blower is built into each part of the seat, the parts cost will increase and the number of assembly steps will be reduced. can't be ignored either. Moreover, in the case of a structure in which a blower is built into the seat pad side, the seat pad cannot be made sufficiently thick, which causes problems such as reduced cushioning properties and poor seating comfort.

Note that there are two types of air blowing sources: an internal type and an external type that is led from the vehicle air conditioner through a duct or the like. In the latter case, the seat cannot be used alone, and there may be restrictions due to its relationship with the vehicle body.

The present invention was developed in view of the above-mentioned problems, and its purpose is to be able to switch the position from which the air blows out between the armrest side and the seat holding surface side, and to simplify the structure and improve assembly workability. An object of the present invention is to provide a breathable vehicle seat that can be used in a vehicle.

[Means for Solving the Problems] In order to achieve the above object, the present invention includes a seat cushion portion, a seat back portion, and an armrest rotatably supported so as to be inserted into and taken out from a recess in the seat back portion. In the breathable vehicle seat having a built-in air blower in the armrest, a ventilation hole is provided on a side surface of the armrest for blowing out the air generated by the air blower, and a ventilation hole is provided in the seat back portion for blowing out the air generated by the air blower. By providing a duct to blow out air, and by providing an air intake port of the duct to communicate with the ventilation port when the armrest is stored in the recess, air from the armrest and air from the seat holding surface can be combined. The structure is such that the air blowing mode can be switched between the two.

[Operation] According to the above configuration, when the armrest is placed in the armrest state, that is, when the armrest is rotated and moved forward from within the recess of the seat back portion, the air generated by the blower is blown out from the ventilation opening on the side of the armrest.

In addition, when the armrest is in the retracted state, that is, when the armrest is rotated and placed into the recess in the seat back, the air intake of the duct provided in the seat back communicates with the ventilation opening of the armrest. The air is guided to the duct from the ventilation opening in the armrest and blown out from the seat holding surface.

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

1 to 3 show an example of a breathable vehicle seat to which the present invention is applied.

In the figure, seat 1 is an example of a bench seat type rear seat in a passenger car.
It mainly consists of a seat cushion part 2 and a seat back part 3. Further, a vertically elongated recess 4 is formed approximately in the center of the seat back portion 3;
An armrest 5 is attached inside.

The armrest 5 is constructed based on a box-shaped housing 6 that is open at the rear, which is the rotation fulcrum side, and has ventilation holes 7 on both left and right sides 6a and 6b.
are formed respectively. Note that each ventilation port 7 is provided with a replaceable filter 8. Further, the outer peripheral surface of the housing 6, except for each ventilation hole 7, is covered with a pad 9, and is further protected from the outside with a skin material 10. On the other hand, a blower 11, a desiccant layer 12, and a filter 13 are arranged in this order in the housing 6, and the inner surface 6c of the housing 6 facing the blower 11 is tapered to allow air to flow into each ventilation port 7. It is designed to be easy to guide. The blower 11 is made up of a cylindrical case 14 fixed in the housing 6, an electric motor 15 fixed to the case 14, and a blade 16 fixedly attached to the output shaft of the electric motor 15. There is. Further, the electric motor 15 can be started and stopped, and its speed can be adjusted to high, medium, and low by operating a switch (not shown) provided near the seat 1. Then, when the electric motor 15 is started, the blades 16 rotate together, and air is sucked from the rear side through the filter 13 and the desiccant layer 12 to generate wind, and this wind hits the inner surface 6c. Further, the air is blown out through the ventilation hole 7 to the outside of the armrest 5. Note that moisture is removed from the air sucked into the armrest 5 when it passes through the desiccant layer 12. Therefore, the air blown out from the ventilation port 7 is in a dry state.

Moreover, the armrest 5 configured in this way
The pair of support parts 17 in the housing 6 protruding from the rear end of the armrest 5 are
It is rotatably attached to the frame 18 of the seat back section 3 via bolts 19 and nuts 20.
When the armrest 5 is not in use, it is rotated around the bolt 19 and stored in the recess 4 so as to be flush with the surface of the seat back part 3. Conversely, when using the armrest 5, if you pull the upper side of the armrest 5 toward you, it will rotate around the part supported by the bolt 19 as a fulcrum and fall forward, as shown in Figure 1. is placed on the seat cushion portion 2. This allows it to be used as an armrest.

On the other hand, on the seat back portion 3 side, ducts 21 are arranged on both sides of the recess 4.
Each duct 21 is formed into a flat bag shape by blow molding a resin material, and has a plurality of through holes 22 (see FIG. 3) scattered on its surface for ventilation. In addition, the air intake port 7 is opened in the recess 4 with the air intake port 23 to which the filter 24 is attached.
It is inserted into the seat pad 25 correspondingly. That is, the air intake port 23 is connected to the filter 8 when the armrest 5 is stored in the recess 4.
Alternatively, it is provided so as to communicate with the ventilation port 7.

The seat pad 25 is formed into a predetermined shape using a breathable fiber-based pad material, such as polyester short fibers, which are steam-cured with a urethane binder, and the outer side of the seat pad 25 is made of a breathable skin material 26. covered with.

In the seat 1 configured in this manner, when the electric motor 15 is not driven, the armrest 5 can be used as a normal armrest.

On the other hand, when the seater feels uncomfortable due to poor ventilation in the seat back 3, etc., the electric motor 15 is operated to drive the blower 11 and blow out dry air from the ventilation opening 7. When the armrest 5 is stored in the recess 4, the ventilation port 7 and the air intake port 23 are in a corresponding state as shown in FIG. It is blown into 21. As a result, the air pressure inside the duct 21 is increased, air is blown out from the through hole 22, and further is forcibly blown out from the surface of the seat back portion 3 through the seat pad 25 and the skin material 26.
Further, the blown air removes moisture between the seater and the surface of the seat back portion 3.

On the other hand, when the armrest 5 is pulled out from the recess 4 as shown in FIG. Air is blown to provide stronger ventilation. In this case, by moving the armrest 5, the sprayed position can be adjusted according to the rotational position of the armrest. Therefore, in the seat 1 configured in this way, air can be blown out from the side ventilation holes 7 of the armrest 5, and this air can be guided between the seat surface and the occupant to remove moisture. It can improve sitting comfort. Furthermore, since the blower 11 is disposed within the armrest 5, the blower 11 can be assembled into the armrest 5 and attached to the armrest 3 as a unit. Thereby, workability can be improved. At the same time, since the thickness of the seat pad 25 in the seat back portion 3 can be increased, the cushioning properties are not impaired.

Moreover, as described above, when the armrest 5 is in the retracted state, the duct 2 provided in the seat back portion 3
The air intake port 23 of No. 1 and the ventilation port 7 communicate with each other, and the air generated by the blower 11 flows from the ventilation port 7 to the duct 2.
1, the air is blown out from the sheet holding surface, so the air blowing mode can be greatly changed, and the air blowing mode can be switched easily and clearly. In this case, since the blower 11 is used for both the armrest 5 and the seat back 3 side, the number of parts and assembly work efficiency can be reduced by half compared to a structure in which it is built in alone.

Although the above embodiment discloses a structure in which the ventilation holes 7 and ducts 21 are provided on both left and right sides, it is also possible to provide them only on one side.

[Effects of the invention] As explained above, according to the breathable vehicle seat according to the invention, by selecting the state of the armrest, the position from which the wind blows out can be switched between the side of the armrest and the seat holding surface. ,
It becomes possible to obtain an appropriate air flow that suits the user's preference, further improving the sitting comfort of the seater, and efficiently removing moisture.

Furthermore, in addition to incorporating the blower into the armrest, the present invention also allows communication between the ventilation port of the armrest and the air intake port of the duct provided in the seat bag when the armrest is in the retracted state. Switching is simple and clear,
Moreover, since the blower can be integrated into the armrest and attached to the seat back in a unitized state, assembly work is easy, and the thickness of the seat pad material on the seat back side can be made relatively large, which prevents cushioning properties. There's nothing to do.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an embodiment of a breathable vehicle seat to which the present invention is applied, Fig. 2 is a sectional view of the main part taken along the - line in Fig. 1, and Fig. 3 is a main part of the same seat. It is a schematic sectional view. 1... Seat, 2... Seat cushion section, 3
... Seat back part, 4 ... Recess, 5 ... Armrest, 7 ... Ventilation opening, 11 ... Air blower, 21 ...
...Duct, 23...Air intake.

Claims (1)

[Claims for Utility Model Registration] A seat cushion, a seat back, and an armrest rotatably supported so as to be inserted into and taken out from a recess in the seat back, the armrest having a built-in air blower. In the breathable vehicle seat, a ventilation hole is provided on a side surface of the armrest to blow out the air generated by the blower, and a duct is provided in the seat back portion to blow out the air toward the seat holding surface, and By providing an air intake port so as to communicate with the ventilation port while the armrest is stored in the recess, the air blowing mode can be switched between air blowing from the armrest and air blowing from the seat holding surface. A breathable vehicle seat.