JPH0788021A - Air mat - Google Patents

Abstract

PURPOSE:To facilitate the regulation of the internal pressure of the main body of an air mat in a best condition. CONSTITUTION:An air mat comprises a main body of air mat 1, with air inside supplied so as to support the human body having an ejection bore 1b for ejecting the air; a stationary member 3 fixed inside the main body of air mat 1 and having an ejection bore 3b conforming to the ejection bore 1b; a rotating member 4 for opening and closing the ejection bore 1b with its rotation, rotatably mounted on the outer surface of the main body of air mat 1; and an air supply regulation device for supplying the air to the main body of air mat 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air mat having air ejection holes.

[0002]

2. Description of the Related Art This type of air mat is widely applied to bedding such as mattresses and bed mats, medical mats such as floor rub prevention mats, and air massagers.

As an example of this air mat, an air mat main body having a plurality of air ejection holes for ejecting air, which is supplied with air inside to support a human body, and air for supplying air to the air mat main body. Some include a supply control device. The air ejection holes described here can be easily formed on the surface of the air mat main body by using a tool such as a needle.

According to this structure, the air mat main body is
Air is supplied by the air supply control device and expands, and the air is ejected from the air ejection holes while maintaining the bulge, so that it improves the air permeability of the surroundings and removes the moisture in the surroundings such as comforters. In addition, there is an advantage of immediately warming the surroundings when appropriately warmed air is supplied to the inside in the cold season.

[0005]

The above-mentioned conventional air mat has the following problems when air is supplied to the air mat body.
Since a constant amount of air was constantly ejected from the air ejection holes, the air ejection amount could not be adjusted at the air ejection holes. Therefore, the internal pressure of the air mat main body depends on the amount of air supplied from the air supply controller. That is, when the amount of air supplied from the air supply control device to the air mat main body is reduced, the internal pressure of the air mat main body is reduced and the elasticity is reduced.
When the amount of air supplied from the air supply control device to the air mat main body is increased, the internal pressure of the air mat main body rises to a hard mat, and the amount of air is adjusted so that the internal pressure of the air mat main body becomes the optimum state. Adjusting has never been easier.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an air mat in which the internal pressure of the air mat main body can be easily adjusted to an optimum state.

[0007]

In order to achieve the above object, an air mat according to a first aspect of the present invention is provided with air therein to support a human body and has an air ejection hole for ejecting air. The air mat main body and the air supply controller for supplying air to the air mat main body are configured so that the air ejection holes can be opened and closed.

The air mat according to a second aspect is configured such that the air mat main body according to the first aspect is provided with a second air ejection hole which is always open.

Further, in the air mat according to claim 3, the air supply control device according to claim 1 or 2 detects the pressure inside the air mat main body and keeps the pressure at a predetermined pressure. It is configured to control the supply amount of air to the.

According to a fourth aspect of the present invention, an air mat according to the first aspect is provided with an abutting portion projecting outward from an end surface of the air ejection hole at a position around the air ejection hole of the air mat main body. I am trying.

According to a fifth aspect of the present invention, in the air mat according to the first aspect, the air ejected from the air ejection holes is located at a position separated from the air ejection holes of the air mat main body by a certain distance. A lid is provided so as to flow along.

[0012]

According to the first aspect of the invention, since the air ejection hole can be opened and closed, the amount of air ejected to the outside can be adjusted.

According to the second aspect of the present invention, since the second air ejection hole constantly ejects air to the outside, it becomes difficult to apply an excessive pressure to the inside of the air mat main body.

According to the third aspect of the invention, even if the internal pressure of the air mat main body changes due to an external force or adjustment of the air ejection holes, the air supply controller returns the pressure to the predetermined pressure.

According to the structure of the fourth aspect, it is possible to prevent the air ejection hole from being blocked by the contact portion contacting the human body.

According to the fifth aspect of the invention, the air ejected from the air ejection holes hits the lid body, changes its direction, and flows out along the outer surface of the air mat main body.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to FIGS.

The air mat of this embodiment has an air mat main body 1 and an air supply controller 2 as main constituent members.

The air mat main body 1 is a substantially rectangular bag in a plan view when no air is supplied to the inside, and a plurality of insertion holes 1a are formed at appropriate positions and a fixed distance from each insertion hole 1a. Ejection holes 1b formed at distant positions,
An annular hole 1c formed in an annular shape around each insertion hole 1a so as to insert a guide protrusion 3c described later, a second ejection hole 1d formed at an appropriate position, and an air supply port formed at one end (Fig. (Not shown).

On the inner surface of the air mat body 1, a fixing member 3 having a substantially disc shape is arranged. This fixing member 3
Is the insertion hole 3a formed to have a diameter substantially the same as the diameter of the insertion hole 1a at the center position, and the diameter of the ejection hole 1b at a position separated from the insertion hole 3a by a certain distance. It has an ejection hole 3b formed in the above and a guide protrusion 3c formed in an annular shape on one end surface. The fixing member 3 includes an insertion hole 3a and an ejection hole 3b from the inner surface of the air mat body 1, respectively.
The guide protrusion 3c is passed through the annular hole 1c, and further fixed to the inner surface of the air mat main body 1 by sticking or the like.

On the outer surface of the air mat body 1, a rotating member 4 having a substantially disc shape is arranged. This rotating member 4
Is an insertion hole 4a formed to have a diameter substantially the same as the diameter of the insertion hole 1a in the central position, a step portion 4b formed in the peripheral position of the insertion hole 4a, and a fixed distance from the insertion hole 4a. Vent hole in position
Jet hole 4c formed to have a diameter substantially the same as the diameter of 1b
And a groove portion 4d formed in an annular shape on one end surface so as to be guided and rotated by the guide protrusion 3c, and a protruding portion 4e formed so as to protrude through the center position of the other end surface. Protrusion
The 4e can grasp this and operate the rotating member 4, and can prevent the ejection hole 4c from being blocked by the body or the like. The rotating member 4 is rotatably attached by aligning the insertion hole 4a with the insertion hole 1a from the outer surface of the air mat body 1 and fitting the groove portion 4d into the guide protrusion 3c. Further, when the rotating member 4 is rotated to a predetermined position, the ejection hole 4c is in a state of being aligned with the ejection hole 1b.

Reference numeral 5 denotes a pressing holding member, which has a substantially E-shaped cross section, and has a cylindrical insertion portion 5a and an insertion portion 5a.
A disc-shaped pressing portion 5b is formed at one end of 5a, and a disc-shaped spring support portion 5c is formed at the other end of the insertion hole 5a. In the pressing holding member 5, the insertion portion 5a is inserted into the insertion holes 1a, 3a, 4a, the inner surface of the pressing portion 5b is brought into contact with the step portion 4b, and the inner surface of the spring supporting portion 5c and the other end surface of the fixing member 3 are attached. Coil spring 6
The rotary member 4 is pressed against the fixed member 3 via the air mat body 1 by interposing.

As shown in FIG. 4, the air supply control device 2 is connected to the air supply port of the air mat main body 1 to supply air to the air mat main body 1 and an electric power from an external power source. The air pump voltage control circuit 8 that drives the air pump 7 and the air mat main body.
Pressure designation panel 9 that designates the inside of 1 to the desired pressure,
Pressure sensor that detects the internal pressure of the air mat body 1
Comparing the pressure detection circuit 10 having 10a with the pressure designated by the pressure designation panel 9 and the internal pressure of the air mat body 1 detected by the pressure sensor 10a, the internal pressure of the air mat body 1 becomes the designated pressure. An arithmetic circuit that calculates the drive voltage of the air pump 7 by a microcomputer and outputs a signal to the air pump voltage control circuit 8
It is composed of 11 and. Further, the arithmetic circuit 11 performs voltage control by a thyristor (triac) by a firing angle phase control method.

The operation of this embodiment will be described below.
First, a desired pressure is designated by the pressure designation panel 9. When electricity is supplied to the air pump voltage control circuit 8 from an external power source, the air pump 7 is driven and air is supplied to the inside of the air mat main body 1 and the air mat main body 1
Inflate until it reaches a predetermined size.

Here, when the ejection holes 4c and the ejection holes 1b are not aligned with each other, the air inside the air mat body 1 is ejected only from the second ejection holes 1d. When the protrusion 4e is grabbed and the rotary member 4 is rotated to a predetermined position so that the ejection holes 4c and the ejection holes 1b are aligned with each other, the air inside the air mat main body 1 is ejected from the ejection holes 1b, 3b, 4c and It is ejected from the second ejection hole 1d.

The bulge of the air mat main body 1 detects the internal pressure by the pressure sensor 10a, and the arithmetic circuit is operated so that this pressure becomes the pressure designated by the pressure designation panel 9.
By performing arithmetic processing by 11 and outputting a signal to the air pump voltage control circuit 8 and controlling the air supply amount of the air pump 7 by the air pump voltage control circuit 8,
Optimal state.

Therefore, the air mat main body 1 is adjusted by adjusting the amount of air ejected from the ejection holes 1b, 3b, 4c and the second ejection hole 1d and controlling the amount of air supplied to the inside. , You can get the optimum bulge.

Next, a second embodiment of the present invention will be described with reference to FIGS.
It will be described based on. It should be noted that members having substantially the same functions as those of the first embodiment described above are designated by the same reference numerals and the description thereof will be omitted.

In this embodiment, a lid 12 having a substantially disk shape in plan view and an edge 12a thereof curved in one direction is arranged on the protrusion 4e of the first embodiment. That is, the lid 12 is
The one end surface on the curved side of the edge portion and the other end surface of the rotating member are fixed to the protrusion 4e so as to face each other.

According to this structure, the end surface of the ejection hole 4c and the lid body
A gap is provided between the one end face of 12 and the protrusion 4e. That is, when the air inside the air mat main body 1 is ejected from the ejection holes 1b, 3b, 4c, the ejected air first hits one end surface of the lid body 12 and turns toward the circumferential direction of the lid body 12 to bend. The edge portion 12a is further brought closer to the outer surface of the air mat body 1, and flows along the outer surface of the air mat body 1 from the gap between the edge portion 12a and the peripheral end of the rotating member 4.

Next, a third embodiment of the present invention will be described with reference to FIGS.
It will be described based on 1. It should be noted that members having substantially the same functions as those of the first embodiment described above are designated by the same reference numerals and the description thereof will be omitted.

The air mat main body 1 is a substantially rectangular bag in a plan view when air is not supplied to the inside thereof, and a plurality of insertion holes 1a formed at appropriate positions and a predetermined distance from each insertion hole 1a. Ejection holes 1b formed at distant positions,
It has an air supply port (not shown) formed at one end.

On the outer surface of the air mat main body 1, a second fixing member 13 having a side surface of a substantially round tubular shape is arranged. Second
The fixing member 13 has a through hole 13a formed in the central position so as to have a diameter substantially the same as the diameter of the through hole 1a, a stepped portion 13b formed at a peripheral position of the through hole 13a, and a constant diameter from the through hole 13a. Projection that protrudes in one direction from the side edge at a distance
13c, 13c, an ejection hole 13d formed on one of the protrusions 13c so as to have a diameter substantially the same as the diameter of the ejection hole 1b, and an O-ring 14 formed on one end side of the side surface. A ring groove 13
e, a guide groove 13f formed on the other end surface side of the side surface, and an attachment / detachment groove 13g formed so as to extend from the end of the guide groove 13f to the other end surface. The second fixing member 13 is formed by aligning the insertion hole 13a with the insertion hole 1a from the outer surface of the air mat body 1.
Insert 15 through the insertion holes 1a and 13a, and make one end face of the retaining ring 16 a stepped portion 13.
The retaining ring 16 is caulked to the end of the shaft 15 so as to come into contact with b, and the ejection hole 13a is fixed to the outer surface of the air mat main body 1 so as to match the ejection hole 1a.

The second fixing member 13 is provided with a second lid body 17 formed in a substantially cup shape so as to cover the second fixing member 13.
The second lid 17 has an ejection hole 17a formed at a substantially central position,
The ejection amount adjusting portion 17b, which is notched so as to have an inward inclined surface from one end to the other end in a range apart from the ejection hole 17a, is fitted to the guide groove 13f and the attachment / detachment groove 13g. It has a protrusion 17c formed on the side surface.

When the second lid 17 is mounted on the second fixing member 13 by fitting the protrusion 17c into the guide groove 13f from the attachment / detachment groove 13g, the end surface of the protruding portion 13c comes into contact with the inner surface, Further, the O-ring 14 is in contact with the inner surface. As a result, the second lid 17 becomes rotatable within the range of the guide groove 13f.

According to this structure, the amount of air ejected from the inside of the air mat body 1 is adjusted by rotating the second lid 17 and adjusting the distance between the ejection hole 13d and the ejection amount adjusting portion 17b. be able to. For example, when the distance between the ejection hole 13d and the ejection amount adjusting portion 17b is reduced, the amount of air ejected from the ejection hole 13d is reduced, and when the distance between the ejection hole 13d and the ejection amount adjusting portion 17b is increased, the ejection hole is increased. The amount of air ejected from 13d becomes large.

[0037]

In the air mat according to the first aspect of the present invention, since the air ejection holes can be opened and closed, the amount of air ejected to the outside can be adjusted, and as a result, the internal pressure of the air mat main body can be easily adjusted to the optimum state. can do.

The air mat according to claim 2 is the same as claim 1.
In addition to the effects described above, since the second air ejection holes constantly eject air to the outside, it is less likely that excessive pressure will be applied to the inside of the air mat main body, and as a result, rupture of the air mat main body can be prevented.

The air mat according to claim 3 is the same as that according to claim 1.
Alternatively, in addition to the effect described in 2, even if the internal pressure of the air mat main body changes due to an external force or adjustment of the air ejection holes, the air supply control device returns the pressure to a predetermined pressure. It can be easily adjusted.

The air mat according to claim 4 is the same as that according to claim 1.
In addition to the effects described above, it is possible to prevent the air ejection hole from being blocked by the contact portion coming into contact with the human body.

The air mat according to claim 5 is the same as claim 1.
In addition to the effects described, the air ejected from the air ejection holes hits the lid and changes its direction and flows out along the outer surface of the air mat main body, resulting in less irritation to the human body by the air ejected from the air ejection holes. can do.

[Brief description of drawings]

FIG. 1 is a perspective view of a first embodiment of the present invention.

FIG. 2 is a front view showing the rotating member.

FIG. 3 is a cross-sectional view of the relevant part.

FIG. 4 is a block diagram showing the control configuration.

FIG. 5 is a front view showing a lid body according to a second embodiment of the present invention.

FIG. 6 is a cross-sectional view of the relevant part.

FIG. 7 is a cross-sectional view of essential parts of a third embodiment of the present invention.

FIG. 8 is a side view in the A direction showing the second fixing member and the second lid body.

FIG. 9 is a BB sectional view thereof.

FIG. 10 is a sectional view taken along the line CC.

FIG. 11 is a perspective view showing the second fixing member.

[Explanation of symbols]

 1 Air mat main body 1d Second ejection hole 2 Air supply control device 4e Projection 12 Lid 1b, 3b, 4c Ejection hole

Claims (5)

[Claims] 1. An air mat main body which is supplied with air to support a human body and has an air ejection hole for ejecting air, and an air supply controller for supplying air to the air mat main body. In the air mat, the air mat main body is formed with an air ejection hole which can be opened and closed. 2. The air mat according to claim 1, wherein the air mat main body is provided with a second air ejection hole which is always open. 3. The air supply control device according to claim 1, wherein the air supply control device detects the pressure inside the air mat body and controls the amount of air supplied to the air mat body so that the pressure becomes a predetermined pressure. Air mat. 4. The air mat according to claim 1, wherein the air mat main body is provided with an abutting portion projecting outward from an end surface of the air jet hole at a position around the air jet hole. 5. The air mat main body is provided with a lid body formed at a position spaced apart from the air ejection hole by a predetermined distance so that the air ejected from the air ejection hole flows along the outer surface of the air mat main body. The air mat according to claim 1, wherein