JPH057972Y2 - - Google Patents

Description

[Detailed description of the invention] <<Field of industrial application>> This invention relates to an improvement of a ventilated vehicle seat that can forcefully blow conditioned air from an air conditioner to a predetermined position on the surface of the seat. .

《Prior Art》 Ventilated vehicle seats prevent stuffiness, sweating, etc. at the contact parts by forcibly blowing air out to the parts that come into contact with the body, such as the seat cushion and seat bag. On the contrary, it is a sheet designed to locally heat the body.

As shown in Fig. 3, one of the typical structures of this type of sheet is cushion pad a,
The back pad b and the trim cover c that covers the surfaces of these pads a and b are made of a breathable material, and a ventilation chamber d is formed at the bottom of the cushion pad 1, and a ventilation fan unit e is arranged in this part. air is blown to the surface side of the seat cushion. There is also a system in which a part of this air is sent through a tube f to a closed space formed between the back of the back pad b and the back garnish g, and is blown from this closed space through the back pad 2 to the front side.

According to this structure, since the material itself is breathable, the air blown through the duct can be blown out to each surface without special processing such as ventilation holes, and the structure is simple. It has the advantage of being scalable.

<Problems to be solved by the invention> However, in this type of structure, a portion of the air is blown into the closed space on the side of the back pad 2 through the thin tube 5, resulting in a large loss. Since air is blown out from the air, the efficiency of air blowing is poor, and the effect obtained is small considering the amount of air blown.

On the other hand, if the hose was made thicker, it would not be possible to connect at the narrow joint between the seat cushion and the seat back, and the hose would be exposed, causing problems in terms of appearance. .

By the way, since the surface of the seat cushion and the seat bag that comes into contact with the body has a limited area within the entire seat, it is not necessarily necessary to blow air over the entire surface.

This idea was developed with the above points in mind. By narrowing down the air blowing points on the sheet to specific points that come in contact with the body, it is possible to achieve effective and highly efficient air flow even with a small amount of air blowing. It is an object of the present invention to provide a ventilated vehicle seat that can provide a ventilation condition.

<Means for Solving the Problems> In order to achieve the above object, this invention provides a ring-shaped locking protrusion integrally protruding from the back surface of the pad of a vehicle seat, and also attaches one end to the bottom surface of the seat cushion. The other end opening of the air blowing tube communicating with the formed air blowing chamber is fitted and fixed to the locking protrusion.

<<Operation>> According to the above structure, the locking process is performed by connecting one end of the locking protrusion integrally provided on the back surface of the pad to the tube that communicates with the ventilation side provided at the bottom of the seat cushion. The conditioned air is ejected from the surface of the seat in a state where the air is narrowed down to an area and a location corresponding to the opening area and setting location of the stop projection.

<<Example>> Hereinafter, an example of this invention will be described in detail using the drawings.

1 and 2 show a ventilated vehicle seat to which this invention is applied.

In the figure, a seat 1 is composed of a seat cushion and a seat back, and more specifically, a cushion frame 2, a back frame 3 tiltably connected to the rear of the cushion frame 2, and each frame 2. , 3,
It includes a cushion pad 5 and a back pad 6 that are telescopically supported via an S spring 4 suspended between each frame 2 and 3, and trim covers 7 and 8 that cover the surface of each pad 5 and 6.

Each pad 5, 6 is made of a breathable pad material.

Further, the trim covers 7 and 8 are made of a breathable material such as cloth, and the assembly of the seat 1 is completed by joining the peripheral edges of the trim covers to the respective frames 2 and 3.

In the seat 1 having the above structure, a ventilation chamber 5a is formed on the lower surface of the cushion pad 5, and a fan unit 9 is disposed at the bottom side of the ventilation chamber 5a.

This fan unit 9 consists of a fan motor 9b inside a duct 9a and a propeller 9c coupled to this output shaft.
By the rotation of the seat cushion, air is taken in from between the lowest surface of the seat cushion and the floor surface, and the air is blown out to the surface side of the seat cushion through the ventilation chamber 5a, the cushion pad 5, and the trim cover 7.

Further, one end of a ventilation tube 10 is connected to the rear side of the ventilation chamber 5a, and the other end of this tube 10 is introduced into the back side of the back pad 6.

The back pad 6 is formed in a concave shape at its rear so that it is integrally assembled with the back frame 3 inwardly, and has a concave portion 6a.
The back side of the body is covered with back cover 11.

A ring-shaped locking protrusion 12 is integrally formed in the center of the recess 6a, and a non-breathable support material 14 is formed around the periphery of the locking protrusion 12.
covered by.

The other end of the tube 10 is widened into a flat tubular shape, and its end is fitted into the outer periphery of the locking protrusion 12, and the outer periphery of the fitted part is fastened with a fastening fitting or a resin fastening tool 15. fixed in state.

In the above configuration, a part of the airflow generated in the ventilation chamber 5a on the side of the cushion pad 5 is supplied to the area surrounded by the locking protrusion 12 through the tube 10, passes through the part of the back pad 6 in the cross-sectional area of this area, The water is sprayed out through the trim cover 8 onto the surface of the seat bag.

Although the amount of air ejected from the seat bag depends on the amount of air emitted from the fan unit 9, which is the source of air blowing, the amount of air ejected must be small due to the ventilation resistance depending on the diameter of the branched tube 10. However, by ejecting air only to a specific part of the area surrounded by the locking protrusion 12, the amount of air blown to that part can be set to a suitable and appropriate amount.

By setting this area as the body contact area with the largest contact force among the body pressure distribution with respect to the seat bag, a locally effective air blowing state can be obtained.

In the above embodiment, a fan unit was placed at the bottom of the seat cushion and air was blown through the fan unit, but this invention is not limited to this. Of course, the present invention can also be applied to a sheet having a structure in which a duct communicating with an air conditioner is arranged and air is blown through the duct.

<<Effects of the invention>> As explained in detail using the embodiments above, the ventilated vehicle seat according to the invention has the following effects.

Since conditioned air is locally blown out to the required areas on the seat surface through the breathable pads and trim cover, efficient heating and cooling can be achieved even with a small amount of air flow.

The amount of air blown out is determined by the size of the area surrounded by the locking protrusions, and the position of the air blown out is determined by the protruding portion, so that the optimum design of the amount of air blown out and the distribution of air blown out can be easily made.

[Brief explanation of drawings]

Figure 1 is a cross-sectional view showing the overall configuration of a ventilated vehicle seat to which this invention is applied, Figure 2 is a perspective view showing the back side configuration of the back pad, and Figure 3 is an example of a conventional ventilated vehicle seat. FIG. 1... Seat, 5... Cushion pad, 6...
... Back pad, 6a... Recess (back side), 7, 8
...Trim cover, 9...Fan unit, 10
... Air blowing tube, 12 ... Locking protrusion.

Claims (1)

[Scope of utility model registration request] A ring-shaped locking protrusion is integrally provided on the back surface of the pad in the vehicle seat, and the other end opening of a ventilation tube, one end of which communicates with the ventilation chamber formed on the bottom surface of the seat cushion, is connected to the locking projection. A ventilated vehicle seat characterized by being fitted and fixed to a retaining protrusion.