JPH0240845Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention consists of laying multiple small air mats, and using a computer to supply and exhaust air to each small air mat through a solenoid valve for supply and exhaust. This invention relates to an air mat with a safety mechanism, in which each small air mattress of an air mattress type bed is equipped with a safety mechanism.

(Prior art) As shown in Fig. 5, a conventional small air mat has a bellows-like expandable part between the top plate and the bottom plate, and an air supply pipe is connected via a supply/exhaust valve by computer operation. Air was being pumped in from.

However, in the unlikely event that air continues to be pumped in due to a computer malfunction or a malfunction in the solenoid valve for supply/exhaust,
It was anticipated that users (sick patients, etc.) would fall from their beds, or that small air mattresses might burst in some cases, so it was necessary to take safety measures to avoid such dangers.

(Problems to be solved by the invention) In order to solve the above-mentioned drawbacks, as shown in Fig. 1, an exhaust hole is bored in the upper plate of the small air mat.
This problem is attempted to be solved by providing a safety mechanism inside the air mat that has a valve that closes the exhaust hole.

(Means for solving the problem) The present invention provides a bellows-like expandable part between the top plate and the bottom plate, and air is introduced and exhausted from the air supply pipe via the solenoid valve for supply and exhaust. In an air mat type bed in which a plurality of small air mats are installed, an exhaust hole is bored in the upper plate of the small air mat, and a valve is provided to close the exhaust hole. fixing the attached frame to the inner surface of the upper plate such that the valve seals the exhaust hole from the inside;
This problem was solved by fixing one end of the cable to the lower end of the sliding shaft and fixing the other end to the bottom plate.

(Example) Figure 1 is a diagram showing the internal structure of the present invention, Figure 2 is an enlarged view of the safety mechanism of the present invention, Figures 3 and 4 are diagrams showing the operating state of the present invention, Figure 5 shows an example of an air mat bed using the present invention.
FIG. 6 is a perspective view of the present invention, in which reference numeral A indicates a bed and B indicates a small air mat.

1 is the upper plate of a small air mat, and an exhaust hole 4 is bored in the center.

Reference numeral 2 denotes a bottom plate with a bellows-shaped extensible part 3 facing the top plate 1, and an air supply pipe 10 is provided on the bottom plate 2 via a solenoid valve 11 for supply/exhaust. is operated by computer operation, and this operation causes air to be introduced from the compressor, and by discharging the introduced air, the small air mat B is expanded and contracted. There is.

The extensible part 3 is made of an elastic material such as rubber, and air sent from an air compressor (not shown) is controlled by a solenoid valve 11 for supply and exhaust, and is controlled by a pre-installed computer program. It is designed to expand and contract.

The exhaust hole 4 is opened when air in excess of a predetermined amount is sent into the small air mat A for some reason, and the small air mat A
If the cable is stretched more than necessary, a gap will be created between the valve 5, which is integrated with the sliding shaft pulled by the cable, and the exhaust hole 4, and air will be discharged from this gap to prevent the small air mat A from stretching any further. It's summery.

Reference numeral 5 denotes a valve for closing an exhaust hole 4 formed in the upper plate 1, and a sliding shaft 6 is formed at the lower part.

The sliding shaft 6 is slidably attached to a sliding hole 7a provided in the center of a mounting frame 7 via a coil spring 8. The valve 5 is fixed in a sealed state, and the valve 5 is always pressed upward by the coil spring 8.

Moreover, one end of a cable 9 is fixed to the bottom of the sliding part 6,
The other end of the cable 9 is fixed to the bottom plate 2 of the small air mat A.

Therefore, the cable 9 is in a relaxed state when the small air mat B is contracted.

10 is an air supply pipe that sends air from an air compressor (not shown) to a small air mat B.
The air that is introduced is controlled by a solenoid valve 11 for feeding and exhausting.

The solenoid valve 11 for supplying and exhausting air is operated by a computer (not shown), and in the case of supplying air, it is sent from the air supply pipe 10, and in the case of exhausting, it is supplied from the exhaust pipe 10a. It is beginning to be excreted.

(Effects of the invention) The present invention having the above configuration has the following effects.

Each small air mat installed in the air mat type bed is operated by a computer, so more air than necessary is not fed into the air mat, but in the unlikely event that the computer or・If the exhaust solenoid valve malfunctions and air is sent into the air mat, even if the air mat extends, there will be no gap between the exhaust hole and the valve because the sliding shaft and valve are locked by the cable. The excess air introduced into the air mat is discharged from this gap, and the air mat does not extend beyond a predetermined amount.

In this way, the present invention has a double safety mechanism, so the user can use the bed with peace of mind.

Also, even if a gap is created between the exhaust hole and the valve and the air inside the air mat is exhausted, when the air mat contracts to a predetermined height, the gap between the valve and the exhaust hole disappears.
The exhaust hole is closed by the repulsive force of the coil spring, so
There is no impact on users at all.

[Brief explanation of the drawing]

Figure 1 is a diagram showing the internal structure of the present invention, Figure 2 is an enlarged view of the safety mechanism of the present invention, Figures 3 and 4 are diagrams showing the operating state of the present invention, and Figure 5 is a diagram of the present invention. A diagram showing an example of an air mat type bed using the invention,
FIG. 6 is a perspective view of the present invention. 1...Top plate, 2...Bottom plate, 3...Extendable part, 4...
...Exhaust hole, 5...Valve, 6...Sliding shaft, 7...Mounting frame, 8...Coil spring, 10...Cable.

Claims (1)

[Scope of utility model registration request] A bellows-like elastic part is provided between the top plate and the bottom plate to allow feeding and
In an air mat type bed in which multiple small air mats are installed, through which air is introduced and discharged from an air supply pipe via a solenoid valve for exhaust, an exhaust hole is bored in the upper plate of the small air mat, and the exhaust hole is A mounting frame to which the sliding shaft of the valve is attached via a coil spring is fixed to the inner surface of the upper plate so that the valve seals the exhaust hole, and the lower end of the sliding shaft An air mat with a safety mechanism, characterized in that one end of the cable is fixed to the bottom plate, and the other end is fixed to the bottom plate.