JPH0432101Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to an air mat that ejects air supplied from an air pump from an air ejection hole, and specifically relates to a technique for improving comfort.

[Background Art] Conventionally, in air mats that eject air supplied from an air pump from air ejection holes, air is simply ejected from the air ejection holes, and bedsores may develop if the person sweats a lot in the summer. Also, there was a problem of catching a cold in winter when the room temperature was low. Therefore, devices that adjust the air volume from the air pump have been considered, but even when the air volume is adjusted in this way, the adjusted state is fixed and it is not possible to deal with the next situation, making it difficult to use the air mat comfortably. It was getting to the point where I couldn't continue.

[Purpose of the invention] The present invention was created in view of these problems, and its purpose is to automatically control the air volume according to the humidity between the patient's body and the air mat. The purpose is to provide an air mat that can be used comfortably.

[Disclosure of the invention] The air mat of the invention is provided with a humidity sensor 3 that detects the humidity between the air mat and the human body,
The device is characterized in that it is configured to control the amount of air supplied from the air pump 1 based on the detection result of the humidity sensor 3, and by configuring it in this way, the above object is achieved. This is what I did. In other words, the humidity between the human body and the air mat is detected by the humidity sensor 3, and based on this detection result, the amount of air supplied from the air pump 1 is controlled, and air is blown out according to the patient's sweating even in summer or winter. This is designed to provide a comfortable feeling of use at all times.

Embodiments of the present invention will be described in detail below based on the drawings.

Air mat A has three independent air chambers, two of the three air chambers are for repeated expansion and contraction, and the remaining one air chamber is for air nozzle 2. A large number of... are formed.
As shown in FIG. 2, the air pump 1 is connected to the air chamber for expansion and contraction via solenoid valves 4, 4, and the air pump 1 is operated by the control signal from the controller 5, and the solenoid valve 4 and 4 are alternately opened and closed to repeatedly expand and contract the two air chambers alternately. An air pump 1 is connected to the air chamber having the air nozzle 2 through an automatic valve 6, and the air pump 1 is automatically opened/closed and its opening degree is changed and adjusted by a control signal from the controller 5. The amount of air emitted can be changed and adjusted. A humidity sensor 3 is attached to the approximate center of the air mat A, and the detection results of the humidity sensor 3 are inputted to the controller 5 via the input/output converter 7.
Based on the detection result of the humidity between the patient's body and the air mat A, if the humidity is higher than the reference value, control is performed to increase the opening degree of the automatic valve 6 to increase the amount of air supplied from the air pump 1; In order to lower the humidity, and when the humidity is lower than the standard value, the opening degree of the automatic valve 6 is reduced to suppress the amount of air supplied from the air pump 1 and wait for the humidity to rise to an appropriate level. It is designed so that it can be controlled. A pressure sensor 8 is provided in the discharge path of the air pump 1, and changes in the discharge pressure from the air pump 1 (internal pressure of the air chamber of the air mat A) based on the opening and closing of the automatic valve 6 are detected by the pressure sensor 8. The control roller 5 controls the drive of the air pump 1 based on the detection result, so that the discharge pressure of the air pump 1 (internal pressure of the air chamber) can be controlled to be approximately constant. It is set as.

The automatic valve 6 is connected to the controller 5 as shown in FIG.
A ball valve type in which a ball-shaped valve body 10 is rotated by a motor 9 driven based on a control signal from a valve, a needle valve type as shown in FIG. 5, or other types may be used. It is something.

According to such a configuration, the humidity between the human body and the air mat is detected by the humidity sensor 3, and the amount of air supplied from the air pump 1 is controlled based on the detection result, thereby reducing sweating of the patient even in summer and winter. Air is ejected accordingly to ensure a comfortable experience at all times. Then, feedback control is performed to correct the fluctuations in the internal pressure of the air chamber of the air mat A due to control based on humidity based on the detection result of the discharge pressure of the air pump 1 by the pressure sensor 8, and the internal pressure of the air chamber is adjusted. By keeping it approximately constant, the feeling of comfort is further increased.

[Effects of the invention] In summary, the present invention is configured to provide a humidity sensor that detects the humidity between the air mat and the human body, and to control the amount of air supplied from the air pump based on the detection result of this humidity sensor. Therefore, a humidity sensor detects the humidity between the human body and the air mat, and based on this detection result, the amount of air supplied from the air pump is controlled, and air is blown out according to the patient's sweating even in summer or winter. This has the advantage of providing a comfortable feeling of use at all times.

[Brief explanation of the drawing]

Fig. 1 is an overall perspective view of one embodiment of the present invention;
The figure is an explanatory diagram showing the same control system as above, Figure 3 is a plan view showing the operating range of the automatic valve same as above, and Figure 4 is an explanatory diagram showing the control system same as above.
The figure is a cross-sectional view of the automatic valve same as the above, FIG. 5 is a cross-sectional view of the automatic valve of another embodiment of the same, and FIG. is an air pump, 2 is an air outlet, and 3 is a humidity sensor.

Claims (1)

[Scope of utility model registration request] This is an air mat that blows out air supplied from an air pump from an air outlet, and is equipped with a humidity sensor that detects the humidity between the air mat and the human body.Based on the detection result of this humidity sensor, the air is discharged from the air pump. An air mat configured to control the supply amount.