JP2024020714A - Sheet for mattress - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a durable sheet for a mattress which has a simpler structure than a conventional technique and is easy to change.

SOLUTION: The sheet comprises a front surface part and a rear surface part 3 comprising two first rear surface parts 4 and two second rear surface parts 5, a portion surrounded by the first rear surface parts 4 and the second rear surface parts 5 being an opening part 8. On the inner side surface of each second rear surface part 5 abutting on a mattress, a knit cloth 6 having a length shorter than the second rear surface part 5 and a fixed width is fitted along the edge of the opening part 8. Only a part of the intermediate portion and both of the end portions of the knit cloth 6 are sewed with the cloth of the second rear surface part 5 to partially fix the second rear surface part 5 and the knit cloth 6 with each other. While the sheet is not fitted to the mattress, the second rear surface part 5 is bent, so that the second rear surface part 5 is stretchable by the knit cloth 6. The sheet has a rectangular flat shape with four corners cut off obliquely, the four cut-off portions 9 being sewed to be closed.

SELECTED DRAWING: Figure 1

COPYRIGHT: (C)2024,JPO&INPIT

Description

The present invention relates to sheets for mattresses.

BACKGROUND ART In hotels, hospitals, etc., sheets attached to bed mattresses are frequently replaced, and changing bed sheets requires manpower and time. In the case of sheet-shaped sheets, it is necessary to fold the edges of the sheets and neatly fit them under the mattress, so to make changing the sheets easier, it is recommended to use box-shaped sheets with openings. often.

Box-shaped sheets generally have a structure in which rubber is inserted around the opening to attach the sheets. If rubber is used, there will be problems with durability due to cleaning, etc., so for sheets made of materials other than rubber, for example, Patent Document 1 states that some parts of the sheet material are made more stretchy than other parts. Sheets using materials that have the same properties are described.

In addition, Patent Document 2 discloses a sheet in which a stretchable part is provided in a part that covers a part of the lower surface of the mattress, and it is described that the stretchable part is made to have stretchability by using a knitted fabric for the fabric of the stretchable part. There is.

Furthermore, as shown in FIG. 6, when a conventional sheet 11 is attached to a mattress, approximately triangular extra portions 12 are generated at the four corners of the sheet 11, so the extra portions 12 are folded or otherwise disposed of. It took a lot of time.

JP2008-188418A JP2017-99591A

An object of the present invention is to provide bed sheets that are easy to change and that do not leave excess parts at the four corners when the sheets are attached to a mattress.

The sheet of the present invention is a sheet for a mattress, and has a front surface portion that covers the surface of the mattress, and a back surface portion that covers the periphery of the back surface from the side surface of the mattress, and the back surface portion extends in the longitudinal direction of the mattress. It consists of two first back parts extending parallel to each other in the lateral direction of the mattress, and two second back parts extending parallel to each other in the lateral direction of the mattress, and the first back part and the second back part are the end parts. A portion connected to each other by the first back surface portion and the second back surface portion is an opening for inserting the mattress into the sheet, and the front surface portion and the back surface portion are made of one fabric. A knit fabric having a constant width and a length shorter than that of the second back surface is attached along the edge of the opening to the inner surface of the second back surface that comes into contact with the mattress. only a part of the intermediate portion and both ends of the knit fabric are sewn with the fabric of the second back surface portion, and the second back surface portion and the knit fabric are partially fixed to each other, When the sheet is not attached to the mattress, the second back part is bent, so the second back part can be expanded and contracted by the knit fabric, and the four corners of the rectangle of the sheet are diagonal. It has a planar shape cut into four parts, and the four cut parts are sewn closed.

The four corners of the sheet are cut at an angle of 45 degrees.

The knit fabric and the second back surface portion are sewn and fixed in a straight line extending in the width direction of the knit fabric, and a plurality of linear sewing locations are provided at predetermined intervals, and , the plurality of linear sewing locations are provided at equal intervals.

The sheet of the present invention is a sheet for a mattress, and has a front surface portion that covers the surface of the mattress, and a back surface portion that covers the periphery of the back surface from the side surface of the mattress, and the back surface portion extends in the longitudinal direction of the mattress. It consists of two first back parts extending parallel to each other in the lateral direction of the mattress, and two second back parts extending parallel to each other in the lateral direction of the mattress, and the first back part and the second back part are the end parts. A portion connected to each other by the first back surface portion and the second back surface portion is an opening for inserting the mattress into the sheet, and the front surface portion and the back surface portion are made of one fabric. A knit fabric having a constant width and a length shorter than that of the second back surface is attached along the edge of the opening to the inner surface of the second back surface that comes into contact with the mattress. only a part of the intermediate portion and both ends of the knit fabric are sewn with the fabric of the second back surface portion, and the second back surface portion and the knit fabric are partially fixed to each other, When the sheet is not attached to the mattress, the second back part is bent, so the second back part can be expanded and contracted by the knit fabric, and the four corners of the rectangle of the sheet are diagonal. It has a planar shape cut at 45 degrees, and the four cut points are sewn closed, making it possible to change bed sheets smoothly and easily, without wrinkles. The sheets can be neatly attached to the mattress at the four corners, and since there are no extra parts at the four corners, it is possible to save the trouble of folding back the four corners of the sheet.

It is a bottom surface of the sheet of this invention. It is a sectional view of a sheet. It is a bottom view of the sheet in the middle of manufacture, and is a bottom view of the sheet in a state before cutting the four corners. FIG. 3 is a cross-sectional view of the mattress with sheets attached. FIG. 2 is a partially enlarged view of a corner of the sheet of the present invention when it is attached to a mattress. It is a partial enlarged view of a corner of a conventional sheet in a state of being attached to a mattress.

The mattress sheet 1 of the present invention will be explained in detail below using the drawings. FIG. 1 shows a bottom view of the sheet 1 of the present invention, FIG. 2 shows a cross-sectional view of the sheet 1, and FIG. 3 shows the sheet 1 before diagonally cutting the four corners. FIG.

As shown in FIGS. 1 and 2, the mattress sheet 1 of the present invention has a front surface part 2 that covers the front surface of the mattress 10, and a back surface part 3 that covers the periphery of the mattress 10 from the side surface to the back surface. The front surface part 2 and the back surface part 3 are formed of one cloth, and have a planar shape in which the four corners of a rectangle are cut diagonally. The sheet 1 shown in FIG. 1 has four corners of a rectangle cut at an angle of 45 degrees, and the four cut points 9 are sewn closed. The fabric used for the sheet 1 does not need to be a special fabric, and any fabric used in conventional sheets can be used, such as a blended fabric of polyester and cotton.

The back surface portion 3 includes two first back surface portions 4 extending parallel to each other in the longitudinal direction of the mattress 10, and two second back surface portions 5 extending parallel to each other in the transverse direction of the mattress 10. As shown in FIG. 3, the first back surface part 4 and the second back surface part 5 are connected to each other at their ends so as to form a rectangular shape when viewed from the bottom. A portion surrounded by the two first back sections 4 and the two second back sections 5 serves as an opening 8 for inserting the mattress 10 into the sheet 1.

A knit fabric 6 having a length shorter than that of the second back part 5 and a constant width is attached to the inner surface of the second back part 5 that comes into contact with the mattress 10 along the edge of the opening 8. ing. Only a part of the intermediate portion and both ends of the knit fabric 6 are sewn to the second back surface portion 5, and the second back surface portion 5 and the knit fabric 6 are partially fixed to each other. In the sheet 1 shown in FIG. 1, the knit fabric 6 is fixed to the second back surface portion 5 at four locations at both ends and the middle portion by sewing. As a specific example of the knit fabric 5, for example, polyester interlock (weight: 90 to 200 g/m ² ) can be used, but other knit fabrics can also be used.

As shown in FIG. 1, the sewing locations 7 between the knitted fabric 6 and the second back surface portion 5 are sewn so as to extend linearly in the width direction of the knitted fabric 6, and the sewing locations 7 are They are formed at equal intervals. Since the length of the knit fabric 6 is shorter than the second back surface portion 5 and the knit fabric 6 has elasticity, the sheet 1 can be attached to the mattress 10 as shown in FIGS. 1 and 2. In the state where the sheet 1 is not sewn, the unsewn portion of the second back surface portion 5 is bent, and the knit fabric 6 expands and contracts. When the fabric 6 is stretched, the bent portion of the second back surface portion 5 is stretched, and when the sheet 1 is attached to the mattress 10, the knit fabric 6 is slightly shrunk and the second back surface portion 5 is stretched. Since the second back portion 5 is slightly bent, it has a structure that allows it to expand and contract even if it is made of a non-stretchable material.

As shown in FIG. 1, the sheet 1 has a planar shape in which four corners of a rectangle are cut diagonally, and the four cut points 9 are sewn closed. The sheet 1 shown in FIG. 1 has four corners of a rectangle cut diagonally at 45°. The range in which the four corners are cut (the four shaded areas in FIG. 3) corresponds to the excess portion 12 of the conventional sheet 11 shown in FIG. The extra portion 12 of 11 is cut in advance and processed. The size of the area where the four corners are cut (the four shaded areas in Figure 3) is determined by the size of the sheet 1, as the size of the excess portion varies depending on the size of the mattress on which the sheet 1 is attached. It can be changed as appropriate depending on the size of the mattress to be worn, and the diagonal cutting angle is preferably 45°, but may be around 45°. Then, after cutting the four corners diagonally, the cut portion 9 is sewn as described later, so it is necessary to determine the cutting range of the four corners in consideration of the seam allowance.

As shown in FIG. 3, the four cutting points 9 in the sheet 1 are formed by connecting the first back surface part 4 and the second back surface part 5 at their ends to form a rectangular shape, and then cutting the sheet 1 into a rectangular shape. Determine four cutting points 9 according to the size of the mattress to which the mattress will be attached, and cut the four corners diagonally at 45°. Therefore, the four cutting locations 9 of the sheet 1 extend over the front surface portion 2 and the first back surface portion 4 and second back surface portion 5 of the back surface portion 3. The four cutting locations have the same size. If the four cut points 9 are simply cut, they become open and come undone, so the four cut points 9 are sewn to close the openings. The four cut points 9 are sewn in the same way as the other sewing points. As shown in FIG. 5, when the sheet 1 is attached to the mattress, the four cutting points 9 are placed along the four corners of the side surface of the mattress in the vertical direction, and the sheet 1 The four side corners of the mattress 10 fit into the corners of the mattress 10.

As an example of the sheet 1 shown in FIG. 1, assuming that the longitudinal direction is 210 cm and the transverse direction is 100 cm, other dimensions are as follows. The width of the first back surface portion 4 is 13 cm, and the width of the second back surface portion 5 is 15 cm. The knit fabric 6 has a length of 74 cm and a width of 10 cm, which is shorter than the second back part 5, but the second back part 5 has a length of 83 cm, which is shorter than the knit fabric 6. Since the length is 9 cm longer, the 9 cm longer portion of the second back surface portion 5 is bent as shown in FIGS. 1 and 2. In this way, since the second back surface portion 5 of the sheet 1 is 9 cm longer than the knitted fabric 6, the second back surface portion 5 can be extended from the state shown in FIG. 1 to 9 cm. , the opening 8 can be widened, the mattress 10 can be easily taken in and out of the sheet 1, and the sheet 1 can be replaced smoothly. These dimensions of the sheet 1 are just examples and can be changed depending on the size of the mattress, and can also be changed depending on the material and the like.

The number and spacing of the sewing parts 7 can be changed depending on the size of the sheet 1, the material of the knitted fabric 6, etc. It can be changed as appropriate depending on the material of the cloth 6, etc. As for the material of the knit fabric 6, it is preferable to use a thick fabric that is durable and stretchable.

As shown in FIG. 4, when the sheet 1 of the present invention is attached to the mattress 10, the knitted fabric 6 is in a slightly stretched state, the second back surface portion 5 is in a state where the flexure is slightly reduced, and the The front side 2 of the sheet 1 is pulled toward the back side, and is kept in a clean state without wrinkles or the like.

When a conventional sheet 11 is attached to a mattress, as shown in FIG. 6, an extra portion 12 is formed at the corner, and it is necessary to fold back the extra portion 12 to neatly finish the corner. When the sheet 1 of the present invention is attached to the mattress 10, the four cut points 9 are located at the four corners of the mattress 10, as shown in FIG. Therefore, when the sheet 1 is attached to the mattress 10, the extra parts 12 at the four corners, which were done with the conventional sheet 11, are no longer generated. Since the work of folding back the sheets can be omitted, extra work when mounting the sheet 1 on the mattress 10 can be omitted.

The sheet 1 of the present invention has a structure that can be expanded and contracted without using rubber or the like by attaching the knit fabric 6 to the second back surface portion 5, making it possible to easily and cleanly change sheets. It also has improved durability against cleaning, etc. compared to rubber etc., and can be attached to the mattress neatly without leaving any excess parts on not only the surface of the sheet 1 but also the four corners of the sheet 1. Can be done.

1 Sheet 2 Front part 3 Back part 4 First back part 5 Second back part 6 Knitted fabric 7 Sewing part 8 Opening part 9 Cutting part 10 Mattress 11 Conventional sheet 12 Excess part

Claims (4)

A sheet for a mattress,
A surface portion covering the surface of the mattress, and
having a back surface portion that covers the periphery of the back surface from the side surface of the mattress;
The back portion includes two first back portions extending parallel to each other in the longitudinal direction of the mattress, and two second back portions extending parallel to each other in the lateral direction of the mattress,
The first back part and the second back part are connected to each other at ends, and a portion surrounded by the first back part and the second back part is an opening for inserting the mattress into the sheet. can be,
The front surface portion and the back surface portion are formed of one fabric,
A knit fabric having a constant width and a length shorter than that of the second back surface is attached along the edge of the opening to the inner surface of the second back surface that comes into contact with the mattress,
Only a part of the middle part and both ends of the knit fabric are sewn with the fabric of the second back side part, and the second back side part and the knit fabric are partially fixed to each other, and the sheet is sewn. When not attached to the mattress, the second back portion is deflected, so the second back portion is expandable and contractible by the knit fabric;
The sheet is characterized in that the sheet has a planar shape in which four corners of a rectangle are cut diagonally, and the four cut points are sewn closed. The sheet according to claim 1, wherein the four corners of the sheet are cut at an angle of 45 degrees. The knit fabric and the second back surface portion are sewn and fixed in a straight line extending in the width direction of the knit fabric, and a plurality of linear sewing locations are provided at predetermined intervals. The sheet according to claim 1 or 2, characterized in that: The sheet according to claim 3, wherein the plurality of linear sewing locations are provided at equal intervals.