The present invention relates to a seat with a sheet-like sensor which detects whether an occupant is seated in the seat.
A sensor for preventing malfunction of a passenger air bag is known, which is provided on the upper surface of a vehicle seat cushion.
Such a conventional seat in which the sensor 2′ is bonded and the slab 3 or the frame laminate 4 is provided to cover the sensor 2′ has disadvantages in that many laminating steps are required and cost is increased due to the laminating.
It is an object of the present invention to solve the above disadvantages and to provide a seat with a seat sensor which allows easy manufacture and substantially completely eliminates the bad touch due to the presence of the sensor.
A seat with a seat sensor of the present invention comprises a soft pad and a pressure sensitive sheet-like sensor for detecting a human body seated on the pad wherein the sensor is disposed inside the pad.
Since the sensor is disposed inside the pad, the aforementioned seat with the seat sensor can substantially completely eliminate bad touch due to the presence of the sensor and also eliminate the necessity of providing a slab and a laminate for covering the sensor, thereby allowing easy manufacture and reducing the manufacturing cost.
In one embodiment of the present invention, the pad is provided with a slit for the sensor formed from a side (any one of front, rear, right, and left sides) toward the center of the pad and the sensor is inserted into the slit.
In another embodiment of the present invention, the pad is provided with a cavity formed upward from the bottom of the pad, a soft member is inserted into the cavity, and the sensor is disposed between the top surface of the soft member and the ceiling of the cavity. In this case, the cavity may be formed in such a manner that the lower end thereof is narrower, thereby preventing the soft member from coming off.
a,
1
b and 1c are sectional views showing a seat with a seat sensor according to an embodiment;
a and 2b are sectional views each showing a seat with a seat sensor according to another embodiment;
a and 3b are sectional views showing a seat with a seat sensor according to further different embodiment;
Hereinafter, embodiments of the present invention will be described with reference to the attached drawings.
a,
1
b and 1c are sectional views showing a seat with a seat sensor according to an embodiment of the present invention,
In this embodiment, a pad 1 is provided with a cavity 5 which is formed in the bottom to extend upward and in which a sensor 2 is attached to the ceiling thereof. Filled in the cavity 5 is a slab 6 made of the same soft material as the pad 1 (molded soft polyurethane foam may be used). The sensor 2 may be bonded onto the ceiling of the cavity 5 with an adhesive agent or adhesive tape. Alternatively, the sensor may be bonded on the top of the slab 6. As shown in
In this embodiment, the cavity 5 is formed in a taper configuration in such a manner that the lower portion is narrower so that the slab 6 inserted into the cavity 5 is held in the cavity 5 and is prevented from coming off.
a and 2b show other embodiments of the present invention. In
Though the sensor 2 has substantially the same size as the area of the ceiling of the cavity 5 in
a is a sectional view of a seat with a seat sensor according to a further different embodiment of the present invention and
In the embodiment shown in
According to the present invention, examples of material of the pad 1 include polyurethane foam and thermoplastics resin fibers (e.g. polypropylene, polyethylene, and polystyrene), just like the conventional example. Examples of material of the cover 8 shown in
Though the slit 7 is formed to extend forward from the rear end of the pad 1 in the embodiment shown in
As mentioned above, in the seat with the seat sensor according to the present invention, the sensor is disposed inside the pad so that the occupant never feel bad touch even when the occupant sits down on the pad above the sensor. This structure can eliminate the necessity of providing a slab or a laminate on the top of the pad, thereby facilitating the manufacture of the seat with seat sensor and thus extremely reducing the manufacturing cost.
Number | Date | Country | Kind |
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H09-198413 | Jul 1997 | JP | national |
Number | Date | Country | |
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Parent | 10795810 | Mar 2004 | US |
Child | 12385480 | US |
Number | Date | Country | |
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Parent | 09116906 | Jul 1998 | US |
Child | 10795810 | US |