JP2019189970A - Bedclothes - Google Patents

Abstract

To provide bedclothes capable of stably and smoothly performing tumbling with minimum movement.SOLUTION: Bedclothes 1 is used for sleeping, and the bedclothes 1 is composed of a clothing 3 worn on the outside of a nightwear and an underlay sheet 2 laid under the user. The maximum static friction coefficient between the outer surface 3a of the clothing 3 and the user side surface 2a of the underlay sheet 2 is 0.15-0.35. The user side surface 2a of the underlay sheet 2 is formed of a knitted fabric made of synthetic fibers, and the fabric of the outer surface of the clothing 3 is formed of a woven fabric made of synthetic fibers.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a bedding that makes it possible to smoothly turn over while sleeping and to prevent a burden on the body and a decrease in sleep quality due to insufficient turnover.

  Due to factors such as reduced flexibility and muscular strength due to aging, the smoothness of rolling while sleeping may be impaired. In that case, the quality of sleep may be reduced by waking up when turning over, and the number of times of turning over may be significantly reduced, resulting in adverse effects such as low back pain when waking up, body numbness, and muscle stiffness. It has been pointed out.

  Conventionally, there is a method of using the repulsive force of a mattress laid under the body as a method for making it easy to turn over by itself, and various mattress shapes and structures have been optimized. For example, the mattress for bedding of Patent Document 1 has a three-layer structure in which the maximum load at the time of 75% compression is set in a predetermined range. It has a structure that does not hinder. However, since the frictional resistance, which is a major obstacle to the rolling motion of rolling over, does not change, just using the repulsive force transmitted from the contact part between the body and the mattress has a limited effect and does not greatly improve the whole body. The state that you have to do a big rollover does not change.

  On the other hand, as a bedding aimed at reducing the frictional resistance and making it easier to turn over, a sheet laid under the body, in particular, a sheet in which the friction of the cloth part corresponding to the buttocks is reduced is known (Patent Document 2). ). Moreover, it is an upper garment which has a front body part and a back body part, Comprising: The upper garment which reduced friction by using the surface material of a back body part as a highly slippery cloth member is known (patent document 3).

Japanese Patent Laying-Open No. 2015-126836 Utility Model Registration No. 3126751 Utility Model Registration No. 3183432

  However, as in the above Patent Document 2 and Patent Document 3, even if one of the sheets laid under the body and the upper garment to be worn is improved, the frictional resistance is uncertain if the other subject of friction is uncertain. It cannot be said that it is sufficiently reduced. Therefore, the effect of facilitating the user's turning over may not be satisfactorily exhibited.

  The present invention has been made in view of such circumstances, and an object thereof is to provide a bedding that can be turned over stably and smoothly with a minimum amount of operation.

  The bedding of the present invention is a bedding used at bedtime, and the bedding is composed of a garment worn on the outside of the sleepwear and an underlay sheet laid under the user, and the outer surface of the garment and the underlay sheet The maximum static friction coefficient with the surface on the user side is 0.15 to 0.35.

  The cloth on the user side of the underlay sheet is a synthetic fiber knitted fabric, and the cloth on the outer surface of the garment is a synthetic fiber fabric.

  At least one of the synthetic fiber knitted fabric and the synthetic fiber woven fabric is a fabric whose surface is coated with a lubricant.

  The knitted fabric of synthetic fibers is a warp knitted fabric of fibers mainly composed of polyester fibers, and the woven fabric of synthetic fibers is a plain woven fabric of fibers mainly composed of nylon fibers or polyester fibers.

  The bedding includes a first garment and a second garment as the garment, and has a maximum static friction coefficient between the first garment and the underlay sheet, and a maximum static friction coefficient between the second garment and the underlay sheet. The values are different from each other.

  The bedding of the present invention includes a garment worn on the outer side of the sleepwear and an underlay sheet laid under the user, and the maximum static friction coefficient between the outer surface of the garment and the user side surface of the underlay sheet is 0. Because it is 15-0.35, it does not depend on the bedclothes under the body such as mattresses and mattresses used at the time of bedtime, bedding on the body such as blankets and comforters, and the type of sleepwear worn on the body. Can provide the optimum friction force for turning over stably.

  In addition, by setting the maximum static frictional resistance between the clothing and the underlay sheet to be 0.35 or less, the rolling is sufficiently smooth, and it is possible to rotate in a short time with a small movement with a small turning radius. Furthermore, if the maximum static frictional resistance is set to 0.15 or more, the force is not transmitted due to excessive slipping, and a large motion that moves the center of gravity by expanding the legs or twisting the body is necessary to obtain the rotational force. Nor. As a result, it is possible to prevent awakening when turning over and lowering the quality of sleep, low back pain when waking up due to lack of turning over, body numbness, muscle stiffness, and the like.

  The fabric on the surface of the user side of the underlay sheet is a knitted fabric of synthetic fiber, and the fabric on the outer surface of the garment is a fabric of synthetic fiber, making it a combination that reduces the maximum static frictional resistance and is the most suitable material for bedding Can be selected. By making the upper surface of the underlay sheet into a knitted fabric, the porous three-dimensional structure of the knitted fabric has better air permeability, soft touch, and excellent stretchability than the fabric and film materials. It can be expanded and contracted vertically and horizontally according to the sinking condition of each part, and it can improve sleeping comfort and improve sleep quality. On the other hand, the outer surface of the clothing can be made lighter and thinner than the knitted fabric, which does not interfere with the comfort of the sleeping garment underneath, and hinders the activities when getting up and working in the sleeping garment. Don't be. In addition, it reduces friction between comforters and blankets that touch other than the underlay sheet, and the contact area between clothes, prevents disturbance of comforters and blankets due to friction when turning over, and smooth movement of contact areas between clothes such as the side and inseam can do.

It is the schematic which shows an example of the underlay sheet | seat / clothing of the bedding of this invention. It is the schematic which shows the other example of the underlay sheet | seat / clothing of the bedding of this invention.

  The bedding of the present invention includes a garment worn on the outside of the sleepwear and an underlay sheet laid under the user, and a maximum static friction coefficient therebetween is within a predetermined range. The conventional bedding for turning over has improved the friction coefficient of one of clothing and rug (such as an underlay sheet or mattress), but the present inventor has improved the combination of both instead of either one As a result, the frictional resistance can be reliably improved. Furthermore, in order to optimize the friction at the time of turning over, focusing on the maximum static friction coefficient between the two, it was found that the turning over can be smoothly performed with the minimum operation by setting this within a predetermined range. The present invention is based on such knowledge.

  An example of the bedding of the present invention will be described with reference to FIG. As shown in FIG. 1, the bedding 1 of the present invention includes an underlay sheet 2 laid under the user U at bedtime and a garment 3 worn by the user U at bedtime. The clothes 3 are worn from above the sleepwear used by the user U at bedtime. The underlay sheet 2 is placed on a mattress or a mattress, and is fixed as necessary.

  The size of the underlay sheet 2 is such that when the user U lies down on the sheet, the width of the sheet (length in the short direction) is sufficient to prevent the body from protruding even if the sheet U is turned over, and the length of the sheet (longitudinal direction) The length may be a width that can cover at least the range from the knee to the armpit. Specifically, it is preferable that the length in the short direction is 80 to 120 cm, the length in the long direction is 100 to 140 cm, the length in the short direction is about 100 cm, and the length in the long direction is about 120 cm.

  Moreover, you may adjust suitably the longitudinal direction length of the underlay sheet | seat 2 at the time of use. As shown in FIG. 1, the lower side (lower end) in the longitudinal direction of the underlay sheet 2 may be aligned with the position of the knee, and the upper side (upper end) may reach above the shoulder. The surplus portion at the upper end may be laid under a pillow, for example. As shown in FIG. 1, smooth rolling over is possible by covering the part from the knee to the shoulder where friction is to be reduced, but not covering the lower knee part where friction is required to generate the turning force of turning over.

  Another example of the bedding of the present invention will be described with reference to FIG. In the example shown in FIG. 2, the upper side (upper end) in the longitudinal direction of the underlay sheet 2 ′ is the length to the armpit. In this case, since there is no underlay sheet 2 ′ at the shoulder portion, friction between the mattress or mattress and the shoulder is secured to some extent, and it is easy to secure the turning force for turning over.

  The surface fabric (surface material) on the user side of the underlay sheet is preferably a fabric with a small coefficient of friction and is in contact with the user, so that it is comfortable to touch, does not generate heat, and has high air permeability. As the surface of the underlay sheet, a synthetic fiber knitted fabric is preferable. By using a knitted fabric, it is excellent in stretchability and flexibility compared to a woven fabric, and it is easy to obtain characteristics suitable for an underlay sheet. The knitted fabric may be a flat knitted fabric or a warp knitted fabric, but a warp knitted fabric is more preferable because a more stable knitted fabric can be obtained. The knitting is performed by a normal method, and a tricot knitting machine, a raschel knitting machine, or the like is used. A warp knitting by a tricot knitting machine is preferable, and a knitting structure such as a denby knitting, a cord knitting, an atlas knitting, etc. However, a cord knitting is preferable because a clear wrinkle can be constructed on the surface and the surface becomes slippery.

  When the surface of the underlay sheet is a cord knitted warp knitted by a synthetic fiber tricot knitting machine, the wale (continuous knitting warp direction) direction is substantially parallel to the sheet longitudinal direction, and the course (knitting weft) It is preferable that the configuration is such that the direction) is substantially parallel to the sheet lateral direction. Since turning over is mainly an operation in the lateral direction of the seat, the configuration described above is suitable for turning over. The density of the warp knitted fabric is, for example, 25 to 40 pieces / inch, preferably 28 to 32 pieces / inch in the wale direction, and is, for example, 35 to 65 pieces / inch, preferably 45 to 55 pieces / inch in the course direction. Inches.

  The synthetic fiber constituting the knitted fabric is not particularly limited. For example, polyolefin fibers such as polyethylene fibers and polypropylene fibers, polyester fibers such as polyethylene terephthalate fibers and polybutylene terephthalate fibers, nylon fibers such as nylon 6 and nylon 66, poly Vinyl chloride fiber can be used. Among these, a fiber mainly composed of nylon fiber or polyester fiber is preferable. In this case, one or two or more kinds of synthetic fibers are optionally included as long as the structure is mainly composed of nylon fiber or polyester fiber. May be. For example, the weight ratio of nylon fibers (or polyester fibers) is preferably 60% or more, more preferably 80% or more, and further preferably 100%.

  The thickness of the synthetic fiber constituting the knitted fabric is, for example, 50 to 150 denier, and preferably 60 to 80 denier.

  In addition, the underlay sheet is used as a back fabric (lining) so that it does not slip or twist due to the user's sleeping phase. A dough that can be used is preferred. Specifically, a sponge member such as polyurethane, PVA, or polyethylene is preferable as the backing. The underlay sheet can be manufactured by bonding the sponge member to the back surface of the outer surface (the surface opposite to the surface on the user side) with an adhesive or the like. The thickness of the sponge member is preferably about 2 to 3 mm so as not to change the cushioning property of the mattress or mattress.

  In FIG. 1, a garment 3 is composed of a shirt 3a and trousers 3b. The clothes 3 have a sufficient size even when worn from sleepwear such as pajamas. As shown in FIG. 1, the sleeve of the shirt 3a is long enough to cover the user's elbow, and the bottom of the shirt 3a is long enough to cover the knee. The hem of the shirt 3a is longer than the hem of a normal shirt. The trousers 3b have a length up to the knee and do not cover the area below the knee where the frictional force is desired. The waist of the pants 3b is fixed with rubber or a string. When the hem of the shirt 3a is shifted upward due to the sleeping phase, the trousers 3b are more reliable in reducing friction.

  The shirt and trousers may be made of the same material, and it is practically suitable that the frictional resistance is low, the touch is good, the skin is strong, light and thin. As fabrics for shirts and trousers, synthetic fabrics are preferred. By using a woven fabric, compared to knitted fabric, it can be made durable even in thin fabrics and has excellent heat dissipation. Among the woven fabrics, a plain woven fabric is preferable.

  The synthetic fiber constituting the woven fabric is preferably a fiber mainly composed of nylon fiber or polyester fiber. In this case, one or two or more kinds of fibers may optionally be included as long as the composition is mainly composed of nylon fibers or polyester fibers. For example, the weight ratio of nylon fibers (or polyester fibers) is preferably 60% or more, more preferably 80% or more, and further preferably 100%.

  The thickness of the synthetic fiber which comprises the said textile fabric is 10-75 denier, for example, Preferably it is 15-30 denier. If the thickness of the synthetic fiber is reduced, the fabric can be made thinner and lighter, but the wear resistance tends to be reduced, and if the thickness of the synthetic fiber is increased, the frictional resistance tends to be increased. For example, when a 20 denier nylon yarn is used, the number of yarns to be driven (the total number of yarns that are driven between 1 inch) is about 350 to 420 yarns / inch, and preferably about 380 to 400 yarns / inch. Increasing the number of drives increases the density and makes it slippery, but the flexibility and breathability deteriorate.

  In order to set the maximum coefficient of friction between the clothing and the underlay sheet to 0.15 to 0.35, it is preferable that at least one of the knitted fabric and the woven fabric is a fabric whose surface is coated with a lubricant. Examples of the coating treatment include fluorine processing using polytetrafluoroethylene (PTFE), polyurethane processing using polyurethane, silicon processing using silicon, and the like. Among these, polyurethane processing and fluorine processing are more preferable than silicon processing because a hard coating film is formed on the processed surface and the touch and breathability are poor. Fluorine processing is particularly preferable because the degree of impairing the breathability, softness, and texture of the material is lower. In addition, as a processing method, methods such as laminating, coating, and dipping can be used.

  Further, instead of the coating treatment, at least one surface of the knitted fabric and the woven fabric may be a fabric covered with a plastic film made of a synthetic resin such as polyethylene resin, polypropylene resin, or nylon resin. By using a plastic film, the manufacturing cost can be reduced compared to the coating process. However, since it is inferior to the coating treatment in terms of touch and breathability, the coating treatment is preferable as the surface treatment.

  In FIG. 1, the clothes 3 are configured by the shirt 3 a and the trousers 3 b, but may be configured by only the shirt. For example, a shirt-only configuration is advantageous when wearing clothes from one-piece sleepwear or when it is desired to reduce the number of wearing points.

  In the present invention, the maximum static friction coefficient between the clothing and the underlay sheet is 0.15 to 0.35. The maximum coefficient of static friction (measured in accordance with JIS K 7125) is a value when the outer surface of the garment and the surface 2a on the user side of the underlay sheet (see FIG. 1) are in contact. When only one kind of maximum static friction coefficient is provided as a product, the maximum static friction coefficient is preferably 0.17 to 0.30, and more preferably 0.20 to 0.25. The maximum coefficient of static friction is set to 0.15 or more because if it is uniformly reduced, the rolling efficiency is lowered due to excessive slipping.

  Moreover, it can be set as the bedding which combined two clothes and one underlay sheet as a product, for example. In this bedding set, two types of maximum static friction coefficients can be provided. For example, by preparing clothes with maximum static friction coefficients of about 0.25 and about 0.17, a difference occurs between the clothes, Depending on the user's body shape, body flexibility, etc., it is possible to select clothing suitable for individual rollover.

  The present invention will be further described below with reference to examples, but this is merely an example, and the present invention is not limited thereby.

Test example 1
The cloths used in Examples 1 to 5 and Comparative Examples 1 to 3 and the cloths on the user side of the underlay sheet are shown below.

(Clothing)
Fabric A: Plain woven fabric with 100% polyester fiber, fiber thickness 20 denier, 400 stitches / inch fabric B: Plain woven fabric with 100% nylon fiber, 20 denier fiber thickness, 400 stitches / inch fabric C: Fabric Fabric fabric with B applied to polyurethane D: Fabric fabric with fabric B treated with fluororesin E: Fabric fabric with fabric B treated with silicon F: Plain fabric with 100% cotton, fiber thickness 132 denier, driven in 110 pieces / inch fabric G: 60% cotton, 40% polyester fiber plain weave fabric, fiber thickness 63 denier, number of driven 210 pieces / inch fabric H: 20 g / m ² polypropylene fiber nonwoven fabric on the outer surface Fabric with a 20μm thick polyethylene film

(Underlay sheet)
Fabric a: Tricot fabric with cord knitting of 100% polyester fiber, Fiber thickness 75 denier, Knitting density course 52 / inch, Wale 32 / inch Fabric b: Fabric with fabric silicon a.

  The size of the underlay sheet was 100 cm wide and 120 cm long, and was laid on a high resilience mattress so as to cover the range from the knee to the shoulder. According to the size of each test subject, the sleeve was the length up to the elbow and the hem was up to the knee. Only shirts were used for clothes, and shirts with a relaxed size that did not hinder the rolling exercise of each subject were used.

  About Examples 1-5 and Comparative Examples 1-3, the maximum static friction coefficient by the combination of cloth and cloth for an underlay sheet was measured. The maximum static friction coefficient was measured according to the plastic film and sheet friction coefficient test method of JIS K 7125.

  In addition, 19 subjects evaluated the turnover time required for rollover and the ease of rollover in the combination of clothes and cloth for an underlay sheet. As for the time required for rotation, assuming an overturn, the subjects were allowed to move from a lying-down position to the opposite-side lying position, and the average value of the turn-up times of all the subjects was calculated. The ease of turning over was calculated by selecting the combination that felt the most easy to turn over without considering the texture and texture of the fabric. The results are shown in Table 1.

  From Table 1, in Examples 1-5 with the maximum static friction coefficient of 0.15-0.35, the rotation required time was within 3 seconds, and the smooth rolling was possible. In Examples 4 and 5, there are subjects who can turn over smoothly in a short time without stopping in the middle, and subjects who require a large amount of labor and time to stop the rotation and widen the legs or move the center of gravity. Polarized. From the subject's sense, more excellent results were obtained when the maximum static friction coefficient was 0.20 to 0.30 (Examples 2 and 3).

  On the other hand, in Comparative Examples 1 and 2, the average number of times rotation stopped during the turnover was 5 times or more, and in order to resume the rotation, a small movement that spreads the legs or moves the center of gravity is required, and the rotation time becomes longer. It was. Further, in Comparative Example 3 in which the maximum static friction coefficient is less than 0.15, the reaction force from the underlay mat for turning around in one motion cannot be obtained at the start of rotation in all the subjects, and rotation occurs while turning over. The rotation stopped once before the upper shoulder reached the top, and it took a lot of effort to spread the legs and move the center of gravity to resume the rotation and cross the top.

Test example 2
In Test Example 2, the maximum static friction coefficient was measured by changing the combination of the fabric C, which is a plain woven fabric, and the fabric a, which is a knitted fabric. The fabric C and the fabric a are as described above. The results are shown in Table 2.

  In Table 2, the value of Example 3 which is a combination of a woven fabric and a knitted fabric is the same as that in Table 1. In Example 3, since the flat woven fabric having a dense and flat surface and the three-dimensional stitches of the knitted fabric do not mesh with each other, the contact area of the three-dimensional structure of the knitted fabric is reduced, and the maximum static friction coefficient is reduced. Yes. As a result, it was found that the friction reducing effect equivalent to or more than the combination of the fabrics of Example 6 was obtained. In addition, the frictional resistance can be lowered sufficiently, and at the same time, there is a highly practical combination of using a knitted fabric material with excellent breathability, tactile sensation, and stretchability as a material for the underlay sheet, and a textile material with excellent lightness and thinness. It was shown to be possible. On the other hand, in the case of the combination of knitted fabrics (Comparative Example 4), it was found that the three-dimensional stitches mesh with each other and the frictional resistance increases.

  As described above, the bedding of the present invention makes it possible to limit the rolling friction resistance that could not be achieved by the prior art to an optimum range for turning over, and to make the turning over smoothly with a minimum amount of operation. .

  The bedclothes of the present invention can stably and smoothly turn over with a minimum amount of movement, so it is possible to prevent burden on the body and deterioration of sleep quality due to insufficient turnover, and in particular, turn over by yourself. It is suitable for bedding for smooth turning over of elderly people and patients who have difficulty.

1 bedding 2 underlay sheet 3 clothing

Claims (5)

  The bedclothes are used at bedtime, and the bedclothes are constituted by a garment worn on the outside of the sleepwear and an underlay sheet laid under the user, and an outer surface of the garment and a user side surface of the underlay sheet, The maximum static friction coefficient of the bedding is 0.15 to 0.35.   2. The bedding according to claim 1, wherein the fabric on the user side of the underlay sheet is a knitted fabric of synthetic fiber, and the fabric on the outer surface of the clothing is a woven fabric of synthetic fiber.   The bedding according to claim 2, wherein at least one of the synthetic fiber knitted fabric and the synthetic fiber woven fabric is a fabric having a surface coated with a lubricant.   The knitted fabric of synthetic fibers is a warp knitted fabric of fibers mainly composed of polyester fibers, and the woven fabric of synthetic fibers is a plain fabric of fibers mainly composed of nylon fibers or polyester fibers. The bedding according to claim 2 or claim 3.   The bedding includes a first garment and a second garment as the garment, and a maximum static friction coefficient between the first garment and the underlay sheet, and a maximum static friction coefficient between the second garment and the underlay sheet. The bedding according to any one of claims 1 to 4, wherein the values are different from each other.

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