JP2014226264A - Air mat device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air mat device capable of eliminating a user's pain by generating slip between the user and an air mat body by a vibratory motion of the air mat body, and reducing the friction force between the user and the air mat body when raising and lowering the back, and also capable of reducing a burden of a care-giver's back raising work.SOLUTION: An air mat device includes: an air mat body 20 configured by arranging elongated bag-shaped air cells 21 in parallel provided with an air injection nozzle on a bed 40 provided with an inclinable bed back bottom 41; an air supply device 31 for supplying or exhausting air to or from the air mat body 20 through a transfer path 34; and a controller 30 provided with a control part 32 for controlling the air supply device 31 and a pressure sensor 33. The air mat body 20 is provided with the air cells 21, a vibration generation device 22 for vibrating the air cells 21, and a back raising angle detection sensor 23 for detecting an inclination angle of the bed back bottom 41.

Description

  The present invention relates to a mattress used for a bed that can be raised, and particularly relates to an air mat device that is used by being placed on a nursing bed.

  If you are lying on the bed for a long time, people with physical disabilities cannot frequently turn over, so the body pressure concentrates on the local area for a long time and the blood flow in that part is disturbed. Necrosis may result in bedsores.

  Therefore, as a cushioning material used for mattresses, it has excellent body pressure dispersibility, a foam material such as a pneumatic air cell and foamed polyurethane foam, a sheet material coated with a flowable thermoplastic resin or gel material with a coating material Flexible materials such as materials were used alone or in combination.

  In particular, mattresses that use pneumatic air cells have excellent body pressure dispersion performance by setting the hardness suitable for body weight and body shape (Patent Document 1), and many of them automatically perform wave motions using the expansion and contraction of air cells. Since the body pressure does not concentrate on the same part for a long time by being performed, it is particularly suitable for a bedridden user and is widely used (Patent Document 2).

  In addition, there is a bed that gives a user a relaxation effect to the user, in particular, a sleep vibration or massage vibration on the foot part of the body (Patent Document 3).

Japanese Patent No. 4067854 JP 2000-197672 A Japanese Patent No. 4710257

  Patent Literature 1 and Patent Literature 2 are particularly effective for controlling the air cell of the mattress when the user is sleeping, but the air mat is relatively thick and has a relatively large body sinking, so that the back can be raised. As the bed is raised up, the slippage between the back and the mattress top surface is less likely to occur, and the amount of deviation between the mattress top surface and the mattress bottom surface increases, and the air cell inside the mattress is deformed. At that time, the shear stress generated in the air cell acts as a friction force in the direction of pushing the back downward, so that the body may be pressed and painful, often requiring back care work by a caregiver. was there. Similarly, when the back is lowered, the force in the opposite direction to that when raising the back works and the back is lifted toward the head, which causes pain.

  Moreover, although there exists a thing which exhibits a relaxation effect by giving a vibration to a body like patent document 3, it did not reach to a user's pain at the time of back raising or lowering.

  The present invention has been made in view of the above. In particular, in an air mat used for a nursing bed, the air mat body vibrates when the back is raised or lowered, thereby causing a slip between the user and the air mat body. It is an object of the present invention to provide an air mat device that can reduce the frictional force between the user and the air mat main body, eliminate the user's pain, and reduce the burden on the caregiver's spine-off operation.

  The present invention has been made in order to solve the above-described problems, and the invention of claim 1 is directed to a bed length which is a height direction of a slender bag-shaped air cell provided with an air injection nozzle when the user is sleeping. An air mat main body placed side by side in a direction orthogonal to the direction; an air supply device that supplies and discharges air to the air cell; and a vibration generator that is disposed in the air mat main body and vibrates the air cell. The vibration generating device vibrates the air cell at the time of raising the back of the bed and the bottom of the bed on which the main body is placed so as to be inclined, and when the back of the bed is lowered. The air mat device is characterized in that the friction between the user and the air mat main body is reduced by causing slippage between the air mat body and the air mat body.

  The invention according to claim 2 is the air mat device according to claim 1, wherein the vibration generating device is disposed in close contact with or connected to the air cell.

  The invention according to claim 3 is characterized in that the air mat body is covered with a cover, and the vibration generating device is disposed in close contact with or connected to the inside of the cover. It is an air mat device.

  According to a fourth aspect of the present invention, there is provided the air mat apparatus according to any one of the first to third aspects, wherein the vibration generator is disposed at a portion corresponding to the bed back bottom.

  According to a fifth aspect of the present invention, a back raising angle detection sensor for detecting an inclination angle of the bed back bottom is provided in the air mat body, and vibration of the vibration generator starts when an increase / decrease in inclination of the bed back bottom is detected. The air mat device according to any one of claims 1 to 4, wherein the air mat device is provided.

  The invention according to claim 6 is the air mat device according to any one of claims 1 to 5, wherein the frequency of the vibration generating device continuously increases from 0.

  The invention according to claim 7 is the air mat device according to any one of claims 1 to 6, wherein the vibration of the vibration generator is operated for a predetermined time.

  According to the first aspect of the present invention, the vibration generating device vibrates the air cell when the bed back bottom is raised and lowered, causing a slip between the user and the air mat body, Since it is characterized by reducing the frictional force between them, it is possible to eliminate the pain that the user's body is pressed when the bed back bottom tilts and the pain that the back is raised upward, and the vibration generator The same effects as spine removal, leg removal, and waist removal can be obtained by the vibration of, so that the burden on the caregiver can be greatly reduced. In addition, the ability to efficiently release the frictional force has an effect of suppressing the body from shifting.

  The invention according to claim 2 is characterized in that the vibration generator is disposed in close contact with or connected to the air cell through an intermediate member such as a belt for holding the air cell. Can be propagated to.

  According to the third aspect of the present invention, since the vibration generating device is disposed in close contact with the cover covering the air mat body or via an intermediate member such as a belt or string, the cover vibrates not only the air cell but also the user. The friction between the user and the air mat body can be more efficiently reduced, so that the user's pain can be eliminated.

  The invention according to claim 4 is specialized in effectively eliminating the pain of the user when the bed back bottom is inclined because the vibration generating device is disposed at a portion corresponding to the bed back bottom. This also leads to cost reduction as compared with the case where the vibration generator is disposed on the entire bed.

  In the invention of claim 5, since the back mating angle detection sensor for detecting the inclination angle of the bed back bottom is provided in the air mat body, if the vibration of the vibration generating device is automatically interlocked by the back raising angle detection sensor, it is forgotten to put in It also eliminates forgetting to cut and is very convenient in addition to comfort.

  In the invention of claim 6, since the vibration frequency of the vibration generator continuously increases, for example, by gradually increasing the vibration frequency at the start of vibration, the user is not surprised by the user and the air mat body. Since the friction force can be reduced by generating slipping, the user's pain can be eliminated.

  According to the seventh aspect of the present invention, since the vibration of the vibration generating device is operated for a predetermined time, it is possible to suppress the occurrence of unpleasant feeling due to the continuous vibration of the spine for a long time.

1 is an overall perspective view of an embodiment of an air mat device according to the present invention. An example of the arrangement | positioning position of the vibration generator of the air mat apparatus which concerns on this invention is shown. An example of the vibration state of the vibration generator at the time of bed back bottom inclination operation | movement of the air mat apparatus which concerns on this invention is shown, (a) shows the vibration state at the time of back raising, (b).

  Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of an air mat device according to an embodiment of the present invention, FIG. 2 shows an example of an arrangement position of a vibration generating device of the air mat device, and FIG. An example of the vibration state of a generator is shown, (a) shows the vibration state at the time of back raising, and (b) shows the vibration state at the time of lowering. In the perspective view of FIG. 1, a cover is not drawn to show the internal configuration of the air mat device, but actually the cover covers the air mat body as shown in FIGS. 2 and 3.

  As shown in FIGS. 1 to 3, the air mat device 10 is configured by mounting a slender bag-like air cell 21 having an air injection nozzle on a bed 40 having a bed back bottom 41 that can be tilted. The air mat main body 20, the air supply device 31 for supplying and exhausting air to the air mat main body 20 via the transfer path 34, the controller 32 for controlling the air supply device 31, and the controller including the pressure sensor 33. 30.

  The air mat body 20 includes an elongated bag-shaped air cell 21 having an air injection nozzle, a vibration generator 22 for vibrating the air cell 21, and a back-up angle detection sensor 23 for detecting the inclination angle of the bed back bottom 41. It is arranged. The air mat body 20 is entirely covered with a cover 24 as shown in FIG. Further, an intermediate member 25 is provided which is constituted by a cell holding belt or the like for connecting the air cells 21 and maintaining the air mat shape.

  The air cell 21 is obtained by laminating a highly polymerized polymer film on a flexible fabric such as a cloth, or the flexible plastic film as it is or by treating the surface of the flexible plastic film with a satin finish. It can be expanded and contracted by injecting and exhausting air. The cross-sectional shape of the air cell 21 at the time of expansion is an elliptical shape, but is not limited thereto, and may be a circular shape, a substantially rectangular shape, or a complex shape thereof.

The vibration generating device 22 is a device for vibrating the air cell 21 and the cover 24, and is disposed so as to be in close contact with the air cell 21 as shown in FIG. One or a plurality of vibration generators 22 may be arranged at predetermined positions or intervals in the short direction (the width direction of the user) of the air mat body 20 or as a single long vibration generator 22. The shape, arrangement position, and number of the vibration generators 22 may be determined according to product specifications such as the size of the air mat body 20 and the shape of the air cell 21.
When the vibration generator 22 starts to vibrate, the vibration propagates to the surface of the air cell 21 that is in close contact, and the entire air cell 21 vibrates. The vibration can be controlled in terms of strength and vibration time.
The vibration generation method of the vibration generator 22 includes a method of vibrating the vibrator by magnetism, a method of vibrating the vibrator by piezoelectric action, a method of vibrating the vibrator by magnetostrictive action, a method of vibrating the vibrator by motor driving, and an ultrasonic wave. A known vibration method such as a vibration method can be employed.

The vibration generator 22 is disposed at the bottom of each air cell 21 as shown in FIG. 2A, or in close contact with the adjacent air cell 21 as shown in FIG. 2B. It is also possible to arrange the vibration generators 22 in a predetermined arrangement as shown in FIG.
If the vibration generating device 22 is disposed so as to be connected to the cover 24 via an intermediate member 25 such as a belt or a string as shown in FIG. 2C, not only the air cell 21 is vibrated but also the cover 24 is vibrated. As a result, it is possible to more efficiently generate a slip between the user and reduce the frictional force between the user and the air mat body 20 more efficiently, thereby eliminating the user's pain. It becomes.
When the vibration generating device 22 itself is in close contact with the cover 24, it may be inside the upper surface of the cover 24, or it may be in close contact with or connected to the side surface of the cover 24 so that vibration propagates through the cover 24 and generates a slip with the user. It may be arranged.
The vibration generator 22 may be provided at a position that does not hinder the expansion and contraction operation of the air cell, or at a position that does not cause pain to the user.

  The back raising angle detection sensor 23 is disposed at a position corresponding to the bed back bottom 41 of the bed 40 on which the air mat main body 20 is placed, and detects the inclination angle of the bed back bottom 41. The back raising angle detection sensor 23 detects the current angle of the bed back bottom 41 and detects whether the inclination has increased or decreased with respect to the current angle when the bed back bottom 41 starts to tilt. is there.

  The controller 30 includes an air supply device 31 for supplying and exhausting air to and from the air cell 21 of the air mat body 20, an air transfer path 34 to the three air cells, and a pressure sensor 33 for detecting the pressure in the transfer path 34. And the control part 32 for controlling the air supply apparatus 31 based on the pressure state of the pressure sensor 33 is provided.

  The bed 40 is provided with a bed back bottom 41 for performing a back-up operation. When the user wants to wake up, the bed back bottom 41 is inclined to raise the user's back. The bed back bottom 41 may be manually operated or may be automatically operated using a driving device.

Next, an example of the vibration state of the vibration generator 22 when the bed back bottom 41 is tilted will be described with reference to FIG. The air mat body 20 controls the pressure of the air cell by the control unit 32 of the controller 30. FIG. 3A shows a vibration state of the vibration generating device 22 when the bed back bottom 41 is inclined and increased by raising the back.
When the bed back bottom 41 starts a back-up tilting operation, the back-up angle detection sensor 23 provided on the bed back bottom 41 side of the air mat body 20 detects an increase in tilt, and the vibration generator 22 starts vibrating. At this time, if the frequency is controlled to be gradually increased, the user will not be surprised.
When the inclination increases, the frictional force from the head side to the foot side increases between the air mat body 20 and the back of the user. Therefore, when the air mat main body 20 is vibrated by the vibration generating device 22 vibrating, slippage occurs between the user and the air mat main body 20 via the cover 24 or between the constituent members inside the air mat main body 20. The frictional force between the air mat body 20 and the air mat body 20 is reduced, and the downward pressing feeling that has been generated conventionally is reduced, so that the user's pain can be eliminated. In addition, this can reduce the burden on the caregiver's spine-out operation.

FIG. 3B shows a vibration state of the vibration generating device 22 when the bed back bottom 41 is inclined to be decreased by lowering the back. As in the case of the operation of the vibration generator 22 at the time of raising the back in FIG. 3A, the back raising angle detection sensor 23 detects a decrease in inclination, and the vibration generator 22 starts to vibrate.
When the inclination decreases, the frictional force from the foot side to the head side increases between the air mat body 20 and the back of the user. However, when the air mat body 20 is vibrated by the vibration generator 22 being used, the friction force is increased. Slip between the person and the air mat body 20 through the cover 24 and between the components inside the air mat body 20, reducing the frictional force between the user and the air mat body 20, The pain that can be lifted up can be resolved. In addition, this can reduce the burden on the caregiver's spine-out operation.
When the frictional force is different between when raising the back and when lowering the back, control may be performed to change the strength of the vibration by changing the frequency of each.

  The air mat device of the present invention is used by reducing the frictional force between the user and the air mat body by causing the air mat body to vibrate when the back mat is raised or lowered, thereby causing a slip between the user and the air mat body. Therefore, it is possible to provide an air mat device that can provide higher comfort for the caregiver and can also reduce the burden of the back removal work for the caregiver.

DESCRIPTION OF SYMBOLS 10 Air mat apparatus 20 Air mat main body 21 Air cell 22 Vibration generator 23 Back raising angle detection sensor 24 Cover 25 Intermediate member 30 Controller 31 Air supply apparatus 32 Control part 33 Pressure sensor 34 Transfer path 40 Bed 41 Bed back bottom

Claims (7)

An air mat main body in which elongated bag-shaped air cells having air injection nozzles are placed side by side in a direction perpendicular to the bed longitudinal direction, which is the height direction when the user is sleeping,
An air supply device for supplying and discharging air to the air cell;
A vibration generator disposed in the air mat body and vibrating the air cell;
With
The vibration generator vibrates the air cell when the bed back bottom provided to the bed on which the air mat body is placed so as to be tilted increases when the bed is raised and when the bed bottom is lowered when the bed is lowered. An air mat device characterized in that a slip is generated between an air mat body and a component inside the air mat body to reduce a frictional force between a user and the air mat body.   The air mat device according to claim 1, wherein the vibration generating device is disposed in close contact with or connected to the air cell. The air mat body is covered with a cover,
The air mat device according to claim 1, wherein the vibration generator is disposed in close contact with or connected to the inside of the cover.   The air mat device according to any one of claims 1 to 3, wherein the vibration generating device is disposed at a portion corresponding to the bed back bottom.   The back raising angle detection sensor for detecting the inclination angle of the bed back bottom is provided in the air mat body, and the vibration of the vibration generator is started when an increase / decrease in inclination of the bed back bottom is detected. The air mat device according to any one of 1 to 4.   The air mat device according to any one of claims 1 to 5, wherein the frequency of the vibration generating device continuously increases from zero.   The air mat device according to any one of claims 1 to 6, wherein the vibration of the vibration generator is operated for a predetermined time.

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