JP5019304B1 - Air pillow and pillowcase - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem in a conventional art related to prevention of sliding down of a pillow placed on a bed whose upper body part is raised, wherein various stoppers have been used causing complicated or fixed slipping-down preventive function, and hindering multifunctionality of the pillow. <P>SOLUTION: A pneumatic pillow used for a bed capable of raising the upper body part is provided with a sheet-like slipping-down preventive part on a side corresponding to the largest side of the pillow. Self weight and friction of a pneumatic pillow body and the sheet-like slipping-down preventive part are made balanced, by which the pneumatic pillow is prevented from sliding down from the raised surface of the bed. Other stoppers are not needed, and multifunctionality is also imparted to the pneumatic pillow having reduced weight. <P>COPYRIGHT: (C)2013,JPO&amp;INPIT

Description

  The present invention relates to an air pillow and a pillow cover that are preferably used for a bed in which an upper body part can be tilted up in the medical field, the care and welfare field, the health field, and the daily life field.

  Many techniques relating to prevention of pillow slipping in a bed with the upper body raised up are disclosed in Patent Documents 1 to 8, and the like. For example, Patent Documents 1 and 2 disclose a pillow having a structure in which a pillow is locked to the back of a seat. Patent Document 3 discloses a pillow that prevents sliding off by providing a pin on the back surface of the bed and connecting the pin and the pillow. Patent Documents 4 and 5 disclose pillows that can be fixed to a mat used for a bed using a string or the like. Further, Patent Documents 6 and 7 disclose a structure in which a fixed portion is provided on the frame of the bed, and the fixed portion and the pillow are connected to prevent the pillow from sliding down. Further, Patent Document 8 discloses a pillow that lays a belt sheet between a futon back and a bed table to prevent sliding.

  Japanese Utility Model Publication No. 50-130212   Japanese Utility Model Publication 49-27515   Japanese Utility Model Publication No. 6-13642   Utility Model Registration No. 3093876   Utility Model Registration No. 3084761   Japanese Utility Model Publication No. 7-13265   JP 2005-287545 A   JP 2003-116696 A

  However, in clinical settings such as actual inpatients, pillows are used not only when raising the back of the bed but also multifunctionally as needed, and when the bed is flattened at bedtime, the pillow is matched to the physique. It is also necessary to change the position of the same type of pillow or to apply it when changing the position or raising the lower limbs. Therefore, it is not preferable that the anti-sliding function is excessively complicated or fixed, thereby hindering the multifunctionality of the pillow.

  For example, the pillows described in Patent Literatures 1 and 2 are air pillows for seats and are relatively reliable in preventing slipping, but the pillows are less multifunctional and difficult to use on the bed.

  In Patent Document 3, a pin provided on the back surface for preventing the air pillow from slipping is a hindrance, and furthermore, since the pin and the pillow are connected, it is difficult to move the pillow.

  In Patent Documents 4, 5, 6, and 7, it is relatively reliable to prevent pillow slipping in a back-up bed, but extra strings, hook-and-loop fasteners, locking parts, etc. are required, and the pillow is difficult to attach and detach. There is a problem that there is. In addition, there is a problem that dust or the like adheres to the hook-and-loop fastener and is not preferable in terms of hygiene.

  Further, Patent Document 8 discloses a pillow in which a belt sheet is turned to the back side of the mat through the upper side of the mat and laid between the mat and the bed table to prevent slipping. However, there is a problem that the belt sheet for preventing slipping becomes large, and it is necessary to lift the mat itself for preventing slipping, and it is difficult to place the pillow while the patient is sleeping. Moreover, since a strip sheet is large, it is poor for multi-functional applications.

  It is an object of the present invention to solve these problems, and when using a bed in which the upper body can be tilted back in daily life or hospitalization / medical treatment, it is difficult to slide off from the back-up surface, and at the same time it is easily detached Provided an air pillow and pillow cover that can be used in a multi-functional manner, even for pillow position movement according to the application when the bed is flattened, for posture change and for lower limb lifting That is.

  The present invention is an air pillow used for a bed whose upper body part can be lifted back, and has an air pillow body having an air supply / exhaust port and an air stopper and having a substantially rectangular parallelepiped shape, and a maximum side of the air pillow body Is attached to one side corresponding to the air pillow body, is configured to have substantially the same weight as the air pillow body, and is placed on the upper side surface of the bed so as to straddle the uppermost end of the bed and is prevented from slipping in a substantially rectangular sheet shape. And a section.

  In addition, the present invention is characterized in that the cross-sectional shape of the air pillow body has sides including polygons or curves other than rectangles, and partition lines that maintain the shapes.

  Further, the present invention is characterized in that the maximum side of the air pillow body has a length corresponding to the lateral width of the bed.

  Further, the present invention is characterized in that the slip-preventing portion is formed of a sheet shape having a polygonal shape other than a rectangle or a side including a curve.

  Further, the present invention is a pillow cover used for an air pillow used for a bed whose upper body part can be raised, a pillow storage part for storing an air pillow body having a substantially rectangular parallelepiped shape, and the air pillow body Is attached to one side of the pillow storage portion corresponding to the largest side of the air pillow body, and has a weight substantially equal to the total weight of the air pillow body and the pillow storage portion. And a flexible, substantially rectangular sheet-like slip-off prevention portion that is disposed on the upper side surface of the bed so as to straddle the uppermost end side.

  In the present invention, the pillow cover accommodates an air pillow body having a side where the cross-sectional shape of the air pillow body includes a polygon or a curve other than a rectangle, and a partition line for maintaining the shape. It is characterized by.

  Further, the present invention is characterized in that the pillow cover accommodates an air pillow body having a length corresponding to the lateral width of the bed, with the maximum side of the air pillow body.

  Further, the present invention is characterized in that the slip-off prevention portion of the pillow cover is formed of a sheet shape having a polygon other than a rectangle or a side including a curve.

  Furthermore, the present invention is an air pillow slip-off preventing method having a sheet-like slip-off preventing portion on the maximum side of an air pillow used for a bed whose upper body part can be raised, and is substantially the same as the air pillow main body. The slip-preventing portion having a weight is suspended in the opposite direction to the air pillow body across the uppermost end of the bed and brought into contact with the upper side surface of the bed, and the weight of the air pillow body and the sheet-like slip-preventing portion is reduced. By balancing the balance of friction, the air pillow is prevented from sliding off the back-up surface of the bed.

  The effect obtained by claim 1 will be described. In the air pillow, the air that is the filling has zero weight in the atmosphere, and the weight of the entire pillow can be reduced to the weight of the encapsulating material only. The upper side surface of the bed that is attached to one side corresponding to the largest side of the air pillow body having a substantially rectangular parallelepiped shape, has substantially the same weight as the air pillow body, and straddles the uppermost edge of the back-up bed. By providing a sheet-like anti-slip part that hangs down on the body, the pillow is prevented from sliding down to a certain back-up angle by balancing the weight and friction of the air pillow body and the sheet-like anti-slip part. be able to. As a result, it is possible to prevent the uncomfortable feeling that the pillow is heavy on the shoulders and back due to the pillow sliding down when the bed is tilted up, as seen with conventional pillows with various weights. It is done.

  In addition, since the air pillow according to claim 1 has no locking accessories other than the sheet-like slip-off preventing portion, its position movement is easy, and the advantages of the weight-reduced air pillow are maximized. In addition to the head and neck, it can be used in a multifunctional manner flexibly for posture change, lower limb elevation and the like.

  Furthermore, by adjusting the air pressure by air supply / exhaust through the air supply / exhaust port of the air pillow main body according to claim 1 and stopping with the air plug, it is possible to adjust the resilience, hardness, etc. of the pillow according to the application. Further, when the pillow is not used, the volume of the air pillow body is reduced by exhausting, and the volume of the pillow storage place can be minimized.

  The effect obtained by claim 2 will be described. Within the range that maintains the weight balance between the air pillow body and the sheet-like slip-off prevention part, the cross-sectional shape of the air pillow body includes sides that include polygons or curves other than rectangles, and partition lines for maintaining the shape. By doing so, it becomes possible to create an air pillow shape corresponding to the stability of the placement of the head and neck, and various functions for posture change and lower limb lifting.

  The effect obtained by claim 3 will be described. Since the maximum side of the air pillow has a length corresponding to the width of the bed, the place where the head and neck are placed on the air pillow is secured and stable even when turning over the entire width of the bed or during body movement. You can get medical treatment on the bed.

  The effect obtained by claim 4 will be described. Corresponding to the user's application and preferences by making the sheet-shaped slip-off prevention part into a polygonal shape other than a rectangle or a side with a curve within a range that maintains the weight balance with the air pillow body can do.

  The effect obtained by claim 5 will be described. A pillow storage section for storing an air pillow body, and a pillow storage section corresponding to the maximum side of the air pillow body in a state in which the air pillow body is stored, and the air pillow body and the pillow storage section; Of the air pillow main body by using a pillow cover having a weight substantially the same as the total weight of the air pillow and having a sheet-like anti-slip portion arranged on the upper side surface of the bed so as to straddle the uppermost end of the bed. In addition to preventing slipping, the air pillow body can be prevented from becoming dirty and improved in durability. In addition, by selecting a cover material, it is expected to improve the user's experience. In addition, by adjusting the weight of the material of the sheet-like anti-slip part that adheres to the pillow storage part, the area of the sheet part can be increased or decreased according to the application, or the coefficient of friction of the material can be slightly increased, so It is possible to expand the back-up angle of the bed leading to.

  The effects obtained by claims 6, 7, and 8 are the same as the effects obtained by claims 2, 3, and 4. It is possible to correspond to various functions and user's purpose and taste.

  The effect obtained by the ninth aspect will be described. In an air pillow used for a bed whose upper body part can be raised, a sheet-like anti-slip portion attached on the largest side of the air pillow body and having substantially the same weight as the air pillow body is provided at the uppermost end of the bed. The air pillow is brought into contact with the upper side surface of the bed by hanging in the opposite direction across the air pillow body, and the air pillow is separated from the back-up surface of the bed by balancing the weight and friction of the air pillow body and the seat. It can prevent sliding down.

  Further, the effect obtained by the ninth aspect will be additionally described. This pillow slip-off prevention method is characterized by the application of a balance between the weight and friction of the air pillow body and the sheet-like slip-off prevention part, and it is an advantage that no other attached locking parts are required. is there. As a result, the advantages of a lightweight air pillow can be maximized, the handling effort is reduced, and it is useful not only when the bed is raised up, but also when the bed is flattened. It can also be used in a multi-functional manner as an air pillow according to applications such as movement, posture change, and lower limb elevation.

External view of the air pillow of claim 1 Sectional view of the air pillow of claim 1 The external view which put the air pillow of Claim 1 on the bed which can be raised up The external appearance figure which put the air pillow of Claim 1 on the bed which can be raised up Sectional schematic diagram which shows the force which acts on the air pillow of Claim 1 The external view which uses the air pillow of Claim 1 at the time of the meal intake on a bed Sectional drawing of the air pillow of Claim 2 External view of the air pillow of claim 2 External view of using the air pillow of claim 3 in a patient-side position when the bed is flat The external view which uses the air pillow of Claim 4 on a back raiseable bed Sectional drawing which accommodated the air pillow main body in the pillow cover of Claim 5 The cross-sectional schematic diagram which shows the force which acts on the pillow cover and air pillow of Claim 5

  Hereinafter, embodiments of the present invention will be described with reference to FIGS.

  The appearance of the air pillow P of claim 1 is shown in FIG. The air pillow main body P1 has a substantially rectangular parallelepiped shape, and a sheet-like slip-off preventing portion P3 attached to one side corresponding to the maximum side P2 of the air pillow main body. Air is charged or discharged through the air supply / exhaust port P1A, and is stopped by the air plug P1P. As shown in the sectional view of FIG. 2, the air pillow body P1 is filled with air, but its weight is only the weight of the encapsulating material. For this reason, weight reduction is possible. The sheet-like slip-off preventing part P3 is configured with substantially the same weight as the air pillow body P1, but the sheet can be filled with a filler for adjusting the weight. Moreover, the sheet-like slip-preventing portion P3 is configured to be flexible and can be suspended by its own weight.

  FIG. 3 is an external view of the air pillow main body P1 of claim 1 placed on the upper end of the bed back raising surface B1, and FIG. 4 is an enlarged view thereof. The sheet-like slip-off prevention part P3 is suspended on the upper side surface B3 of the bed across the uppermost end B2 of the bed, and the air pillow position is based on the balance between the weight and friction of the air pillow body P1 and the sheet-like slip-off prevention part P3. Indicates a secured state.

The force acting on the air pillow in this state is shown in FIG. 5 as a schematic cross section. The back raising angle θ, the weight G of the air pillow body, the force F that the air pillow body tries to slide down, the frictional force R between the air pillow body and the bed surface, the weight g of the sheet-like slip-off prevention part, and the sheet-like slip-off prevention This is illustrated as a frictional force r between the portion and the bed surface and a blocking force f of the sheet-like slip-off preventing portion. The coefficient of friction between the air pillow body or the sheet-like slip-off preventing portion and the bed surface was m. Here, F and f are represented by the following equations.
F = G · sin θ−R = G · sin θ−m · G · cos θ = G · (sin θ−m · cos θ)
f = g · cos θ + r = g · cos θ + m · g · sin θ = g · (cos θ + m · sin θ)
Since it is F> f that the pillow slides down, the back-up angle θ
G · (sin θ−m · cos θ)> g · (cos θ + m · sin θ)
Here, in order to balance the weight of the air pillow body and the sheet-like slip-off preventing portion, when G = g,
sin θ−m · cos θ> cos θ + m · sin θ
Θ sinθ / cosθ> (1 + m) / (1-m)
Ｔ tanθ> (1 + m) / (1-m) ... (A)
When the friction coefficient m = 0.4, from the inequality (A),
tan θ> (1 + 0.4) / (1-0.4)
∴ tanθ> 2.3
∴ θ> 66.5
That is, under this condition, when the back raising angle is up to about 66 degrees, the air pillow main body P1 and the sheet-like anti-sliding portion P3 are prevented from slipping on the back raising surface of the air pillow due to the balance between the weight and the friction. It will be.

  FIG. 6 is an external view of a sitting position where an inpatient eats on a back-up bed, but the position of the air pillow body P1 is stably secured at the back-up angle in the sitting position as in this example. And with the weight of the pillow, you won't hang on your shoulders or back.

  Moreover, about the shape of the air pillow main body P1, within the range which maintained the weight balance of an air pillow main body and a sheet-like slip-off prevention part, as shown in FIG. Various shapes can be created in consideration of the stability of the placement of the head and neck and other pillow functions, by including the sides and the partition lines P1S that maintain the shape. FIG. 8 is an external view in which the air pillow according to claim 2 is placed on a back-uppable bed.

  FIG. 9 is an external view when the air pillow according to claim 3 is used by a patient in a lateral position on a flat bed. By setting the maximum side of the air pillow main body P1 to be equal to the width of the bed, a place for placing the head and neck on the air pillow is secured even when turning over the entire width of the bed or during body movement. In addition, it is lightweight and can be used for various air pillow functions, such as for posture change and lower limb raising.

  FIG. 10 is an external view of the air pillow according to claim 4 placed on a back-up bed. It is an example provided with a sheet-like slip-off prevention part P3W having a shape including a curve at the edge. Within the range of the balance between the weight and the friction with the air pillow main body P1, the shape of the sheet-like slip-off preventing portion can be modified and created according to the user's application and taste.

  FIG. 11 is a sectional view in which the air pillow body P1 is housed in the pillow cover PC of claim 5. It consists of a pillow storage part PC1 and a sheet-like slip-off prevention part PC3 attached on one side corresponding to the maximum side PC2. The total weight of the air pillow body P1 and the pillow storage part PC1 and the weight of the sheet-like slip-off prevention part PC3 are substantially the same. The pillow cover PC can prevent the air pillow main body P1 from being soiled and improve the durability, and can be expected to improve the user's experience by selecting the cover material.

FIG. 12 is a schematic cross-sectional view showing the force acting when the air pillow body housed in the pillow cover is used in a bed with a back-up angle θ. The total weight of the air pillow body P1 and the pillow storage part PC1 is G ′, the weight of the sheet-like slip-off prevention part PC3 is g ′, the friction force between the pillow storage part and the bed surface is R ′, the sheet-like slip-off prevention part, The frictional force with the bed surface is r ′, and the friction coefficient between the pillow storage part or the sheet-like slip-off prevention part and the bed surface is m. Here, if the force that the air pillow tries to slide down is F, and the force that the sheet-like slip-off prevention part tries to block is f,
F = G ′ · sin θ−R ′ = G ′ · (sin θ−m · cos θ)
f = g′cos θ + r ′ = g ′ · (cos θ + m · sin θ)
If the pillow slides down with F> f, the following inequality is obtained.
G ′ · (sin θ−m · cos θ)> g ′ · (cos θ + m · sin θ)
In this inequality, G ′ and g ′ balance the weight balance, so if G ′ = g ′,
sin θ−m · cos θ> cos θ + m · sin θ
Θ sinθ / cosθ> (1 + m) / (1-m)
As described above with reference to FIG. 5, the following inequality (A) is derived.
Ｔ tanθ> (1 + m) / (1-m) ... (A)
Here, using a material with a slightly higher friction coefficient m for the pillow storage portion PC1 and the sheet-like slip-off prevention portion PC3 of the pillow cover PC, when m = 0.5, from the inequality of (A) above,
tan θ> (1 + 0.5) / (1-0.5)
Ｔ tanθ> 3.0
∴ θ> 71.6 degrees When m = 0.6, from the above inequality (A), θ> 75.9 degrees,
If m = 0.7, then θ> 79.9 degrees from the inequality (A) above,
Further, if m = 0.8, θ> 83.6 degrees is obtained from the inequality (A).
That is, the back-up angle leading to the pillow sliding is improved. This can improve the pillow slip-off prevention effect by considering the friction coefficient of the material of the pillow cover, in other words, even if the bed is raised at an angle close to a right angle of 70 degrees or more, The possibility that the air pillow can be prevented from slipping is shown.

Industrial available last name

  As described above, the present invention is a lightweight and multifunctional air pillow that is difficult to slide down even in a back-up bed in the medical industry, the care and welfare industry, the health industry, the daily life industry, and the pillow cover used for it. It can be widely used.

P Air pillow P1 Air pillow body P1A Air supply / exhaust port P1P Air plug P1S Bulkhead line P2 Maximum side P3 Sheet-like slip prevention part P3W Sheet-like slip prevention part with a curved edge PC Pillow cover PC1 Pillow storage part PC2 Maximum side PC3 Sheet-like anti-slip part B Bed B1 Bed back raising surface B2 Uppermost side of bed B3 Upper side of bed F Force of air pillow body to slide down f Stopping force of sheet-like anti-slip part G Air pillow Weight of main body G 'Total weight of air pillow body and pillow storage part g Weight of sheet-like slip-off prevention part g' Weight of sheet-like slip-off prevention part attached to pillow cover R Friction between air pillow body and bed surface Force R 'Friction force between the pillow storage part and the bed surface r Friction force between the sheet-like slip-off prevention part and the bed surface r' Friction force between the sheet-like slip-off prevention part adhering to the pillow cover and the bed surface Coefficient θ back lifting angle

Claims (9)

An air pillow used for a bed whose upper body can be raised,
An air pillow body having an air supply / exhaust port and an air stopper and having a substantially rectangular parallelepiped shape;
Adhering to one side corresponding to the largest side of the air pillow body, configured to have substantially the same weight as the air pillow body, and arranged to hang on the upper side surface of the bed across the uppermost end of the bed. A substantially rectangular sheet-like anti-skid part,
An air pillow characterized by comprising:   2. The air pillow according to claim 1, wherein a cross-sectional shape of the air pillow main body includes a side including a polygon or a curve other than a rectangle and a partition line for maintaining the shape.   The air pillow according to claim 1 or 2, wherein a maximum side of the air pillow body has a length corresponding to a lateral width of the bed.   The air pillow according to any one of claims 1 to 3, wherein the slip-preventing portion is formed of a polygonal shape other than a rectangle or a sheet shape having a side including a curve. A pillow cover used for an air pillow used for a bed whose upper body can be raised,
A pillow storage portion for storing the air pillow body having a substantially rectangular parallelepiped shape;
In the state in which the air pillow main body is stored, the air pillow main body adheres to one side of the pillow storage portion corresponding to the largest side of the air pillow main body, and has a weight substantially equal to the total weight of the air pillow main body and the pillow storage portion. And a flexible substantially rectangular sheet-shaped slip-preventing portion disposed on the upper side surface of the bed across the uppermost end of the bed,
A pillow cover, comprising:   The pillow cover according to claim 5, wherein a cross-sectional shape of the air pillow body has a side including a polygon or a curve other than a rectangle, and a partition line for maintaining the shape.   The pillow cover according to claim 5 or 6, wherein a maximum side of the air pillow body has a length corresponding to a lateral width of the bed.   The pillow cover according to any one of claims 5 to 7, wherein the slip-preventing portion is formed of a polygonal shape other than a rectangle or a sheet shape having a side including a curve. A method of preventing an air pillow from slipping, having a sheet-like slip-off preventing portion on the maximum side of an air pillow used for a bed whose upper body part can be raised,
The sheet-like anti-slip portion having substantially the same weight as the air pillow body is suspended in the opposite direction to the air pillow body across the uppermost end of the bed and brought into contact with the upper side surface of the bed, A method of preventing an air pillow from sliding down from the back-up surface of the bed by balancing the balance between its own weight and friction with the sheet-like slip-off preventing portion.

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