JP5650289B2 - mattress - Google Patents

Description

  The present invention relates to a bed that can be raised up, in which the mattress forming the bed portion is formed by laminating a plurality of mat layers, and when the mattress is bent as the back is raised, the gap between the mat layers is shifted. The present invention relates to a mattress that does not place a burden on the user by allowing it.

  In order to assist the movement of the human body lying on the bed, a movable part called a plurality of bottoms is installed on the bed frame, and the movement of these bottoms is controlled so that the bed is placed on the bed. The mattress is designed to bend and deform into a desired shape. Therefore, the most frequent of the above-mentioned bottom movements is performed to assist the movement of raising the upper body, and the so-called back raising is performed by inclining the back bottom installed at the position where the upper body part is laid down. Is the operation.

  In such a bed, a mattress in which a plurality of mat layers are laminated is often used for the comfort of a person lying down. In such a mattress in which a plurality of mat layers are laminated, when the bottom is raised, the mat layer on the lower side (bottom side) of the laminate is greatly curved and the mat layer on the upper side (side of the person lying down) is curved slightly. For this reason, a force is exerted so that the upper mat layer is shifted upward relative to the lower mat layer.

  If the gap between the mat layers is not allowed, a compressive force acts on the upper mat layer, the back is pressed downward and the buttocks are pulled backward (inside the curve), so that the body, particularly the abdomen, is compressed. There are times.

  Therefore, conventionally, the following mattresses have been proposed as a mattress that allows a gap between a plurality of mat layers.

  In a mattress in which a first mat layer and a second mat layer are laminated, a sliding sheet for allowing a gap between the mat layers between the first mat layer and the second mat layer. There is known a device provided with a head (for example, see Patent Document 1).

JP-A-10-276862

  In the thing of patent document 1, it is a mattress which became a three-layer structure of a pair of 1st mat layer, and the 2nd mat layer joined to the upper and lower surfaces of this 1st mat layer, The mat layer has a smooth surface compared to the first mat layer, and the first mat layer joined to the upper and lower surfaces of the mat layer is easy to slide relative to each other, for example, a rectangular sheet made of a material such as foamed polyester. It is shaped into a shape. Alternatively, a material that easily slides is sandwiched between the mat layers. Further, in order to make the second mat layer easy to bend, notches along the width direction are formed at predetermined intervals in the longitudinal direction on the upper and lower surfaces in the middle in the longitudinal direction. In addition, the first mat layer and the second mat layer are bonded and fixed with an adhesive at a portion in the center in the longitudinal direction, which is shifted from the portion where the notch is formed.

  Thereby, when the mattress is curved at the midway in the longitudinal direction where the notch of the second mat layer is formed, the first end is located on the notch side (upper body side) from the bonding portion by the adhesive. The mat layer and the second mat layer are intended to be able to bend while sliding with each other due to the difference in curvature.

  However, in such a bed, when the back is raised, the mat layers are bonded with an adhesive so that the upper body side of the first mat layer and the second mat layer slide on each other and the lower body side does not slide. Alternatively, additional work such as tying with a connecting thread is performed. In such a mattress, not only the work of bonding the mat layers with an adhesive is required, but also the mat layers are bonded so that the mat layers do not shift, so that the adhesive does not penetrate into the mat layers. Adhesive work needs to be performed with great care, and there are problems such as taking a lot of trouble when tying with connecting threads.

  Furthermore, although it is disclosed that a material that easily slides is sandwiched between the mat layers, sufficient sliding performance cannot be obtained between the mat and the material that easily slides, and the relative relationship between the mat layers when raising the back is relatively high. There is a problem that the movement that allows the deviation cannot be performed.

  In the present invention, a mattress in which a plurality of mat layers are laminated, and when the bed is raised up, the mattress is prevented from shifting in the foot direction with a simple structure, and the upper half side of the mattress is smoothly shifted upward. It is intended to move, particularly on the upper body side of the laminated mat layers, so that they are smoothly displaced from each other.

A plurality of the invention has flexibility of bending deformation in accordance placed on the back lifting can be bed to the inclination angle of the movable portion having a movable part caused by the upper tilting operation of the upper body portion of a person lying, A plurality of mat layers stacked in such a manner that they can be brought into contact with and separated from above and below, a removable cover member covering all the mat layers, and a sheet-like slip located between the mat layers corresponding to the upper body portion of the lying person A mattress provided with a member , wherein the plurality of mat layers are in contact with each other in a state in which the lower body side of the plurality of mat layers is stacked so as to be able to contact and separate vertically. According to one aspect of the present invention, the sliding member is folded up and stacked as an upper surface sliding material and a lower surface sliding material, and the folded portion side of the upper surface sliding material and the lower surface sliding material is on the upper body side between the mat layers. Sandwiched between The upper part of the plurality of mat layers is displaced from each other with the upward movement of the movable part, and each end of the upper surface sliding material and the lower surface sliding material on the opposite side of the folded portion is in the cover member. The bag is characterized in that it is fixed to an end side corresponding to the head of a lying person, or another invention is a bag in which the cover member wraps a portion corresponding to the upper body side of the lying person in each mat layer. And a large bag-like portion that wraps together the portion corresponding to the lower half of the lying person in each mat layer, and the surfaces of the bag-like portions facing each other are a sheet-like upper surface lubricant and a sheet-like portion. The bottom surface of the plurality of mat layers are displaced from each other in accordance with the upward movement of the movable portion, and the portions other than the mutually facing surfaces of the bag-like portions are connected to each other. Characterized in that became preparative like structure.

According to the onset bright, a smooth relative sliding between the upper sliding member and a lower surface skids, causing the upper body side each other smoothly shift the mat layer laminated mattress during back lifting (relative movement) it can.

  As the first mat layer of the present invention, a medium-density, high-resilience urethane foam that emphasizes the function of preventing bottoming and is relatively hard is preferable. As the second mat layer, a medium-density high-resilience urethane foam that places emphasis on sleeping comfort and a relatively soft one is suitable. As the third mat layer, a high-resilience urethane foam that places importance on body pressure dispersibility and comfort is relatively soft.

  The back raising mechanism provided on the bed is generally referred to as a bottom and is provided on the frame. In the present invention, the bottom including the bottom will be referred to as a bed.

  In this embodiment, the anti-slip member is laid at a predetermined position on the bed (a position corresponding to the user's buttocks), and a mattress with an outer cover member placed thereon is placed on top of it. In this method, the operation is simple and the anti-slip member can be replaced. The anti-slip member may be detachably attached to the bed side or the outer cover member side with, for example, Velcro (registered trademark), a hook, or the like. In this case, it is effective in that the anti-slip member can be reliably held at a predetermined position. Furthermore, the anti-slip member and the outer cover member may be bonded together using a laminating method. In the present invention, an anti-slip process may be applied instead of laying the anti-slip member. In this case, the anti-slip process may be performed on the back surface of the outer cover member. As an application method that is one of the anti-slip processing, there is a method of coating a high friction material such as rubber or synthetic resin on the back surface of the mattress or the surface of the bed using a doctor knife coater or a roll coater.

  In addition, as rubber or synthetic resin used for anti-slip processing and anti-slip members, styrene-butadiene rubber, nitrile rubber, butadiene rubber, isoprene rubber, butyl rubber, chloroprene rubber, silicone rubber, urethane rubber, fluoro rubber, vinyl chloride resin Those that can increase the friction coefficient of the back surface of the mat, such as ethylene-based resin, are preferable.

The schematic perspective view of the bed concerning Embodiment 1 of the present invention is shown. The side view explaining the state which piled up the mattress on the bed of FIG. The partial expanded sectional view of FIG. 2 is shown. 1 is a cross-sectional view of a mattress according to Embodiment 1. FIG. The perspective view of the exterior sheet | seat member of Embodiment 1 is shown. Sectional drawing of the mattress of Embodiment 2 is shown. The perspective view of the cover member of the mattress of Embodiment 2 is shown. In the second embodiment, a state in which a part of the mattress is widened and opened in order to explain the mattress shift is shown. Sectional drawing of the mattress of Embodiment 3 is shown. In Embodiment 3, in order to explain the shift of the mattress, a state in which a part of the mattress is widened and opened is shown. The perspective view of the outer cover member of Embodiment 3 is shown.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that the following description of the preferred embodiment is merely illustrative in nature and is not intended to limit the present invention, its application, or its use.
(Embodiment 1)
A first embodiment of the present invention will be described with reference to FIGS.

  FIG. 1 is a perspective view of a bed with a back raising mechanism that is normally used. As shown in FIG. 2, the bed 1 corresponds to the back of the user H, the back bottom 2 is lifted by a back raising mechanism (not shown), and the seat bottom 3 corresponds to the user's buttocks D. A knee bottom 4 corresponding to the upper side of the knee C of the human leg and a leg bottom 5 below the knee are provided. A connecting portion between the knee bottom 4 and the leg bottom 5 is lifted by a hoisting mechanism 6. Reference numeral 7 denotes a head panel, and a leg panel is omitted.

  FIG. 2 is a side view illustrating a state in which mattresses are laid on the bed of FIG. FIG. 3 shows a partially enlarged cross-sectional view of the mattress in the state of FIG. FIG. 4 shows a cross-sectional view of the mattress used in FIG. As shown in FIGS. 2 to 4, the mattress 10 is configured by laminating a first mat layer 11, a second mat layer 12, and a third mat layer 13. As shown in FIG. 4, the mattress 10 is covered with a net-like inner cover member 18 that can be expanded and contracted. The outer cover member 16 is covered on the outer side of the inner cover member 18. In the present invention, the inner cover member 18 and the outer cover member 16 are collectively referred to as a cover member. The detailed structure of the outer cover member 16 will be described later. The inner cover member 18 and the outer cover member 16 can be opened and closed by a chuck, Velcro (registered trademark) or the like in the middle in the vertical direction, and can be removed from the mat layer.

  The first sliding member 14 is folded at the folded portion 14d with the lower surface lubricant 14a positioned on the lower surface side of the second mat layer 12 and the upper surface lubricant 14b positioned on the upper surface side of the first mat layer 11, respectively. It is interposed between the lower surface of the second mat layer 12 and the upper surface of the first mat layer 11. An end 14c of the first sliding member 14 is sewn to the inner cover member 18 and fixed. The second sliding member 15 is folded at the folded portion 15d with the lower surface sliding material 15a positioned on the lower surface side of the third mat layer 13 and the upper surface sliding material 15b positioned on the upper surface side of the second mat layer 12, respectively. It is interposed between the lower surface of the third mat layer 13 and the upper surface of the second mat layer 12. The end 15c of the second sliding member 15 is sewn to the inner cover member 18 and fixed. The first sliding member 14 and the second sliding member 15 are laid on a portion (that is, the upper body side of the mattress) that should be relatively slid when raising the back. In the present embodiment, the upper body side of the mattress 10 is provided. And a width having the same width as the width of the mattress.

  The detailed structure of the outer cover member 16 will be described with reference to FIG.

  The outer cover member 16 is made of different materials on the upper body side 16a and the lower body side 16b. An expansion / contraction member 17 is provided on the upper body side 16a of the outer cover member 16 so that it can be expanded and contracted when the back is raised. Specifically, the upper surface portion 16c is made of a material having excellent waterproof properties, such as urethane synthetic leather material, so that dirt and the like are not soaked and easy to wipe. On the other hand, the lower surface portion 16f is not required to be as waterproof as the upper surface portion 16c, and a low-cost material such as nylon is used. The lower body side 16b includes an upper side surface portion 16e1 and a lower side surface portion 16e2. The rear surface portion includes an upper rear surface portion 16g1 and a lower rear surface portion 16g2. Among them, a first elastic member 17a is provided at a position corresponding to the collar portion of the lower surface portion 16f, and the lower surface portion 16f includes a first lower surface portion 16f1 on the front side and a second lower surface portion 16f2 on the rear side. Yes. The side surface portion 16d includes an upper side surface portion 16d1 and a lower side surface portion 16d2. A second elastic member 17b is provided on the lower side surface portion 16d2. These first elastic member 17a and second elastic member 17b constitute the above-described elastic member 17. The first lower surface portion 16f1, the second lower surface portion 16f2, the lower side surface portion 16e2, and the lower rear surface portion 16g2 are made of the same material as the lower surface portion 16f, and the upper side surface portion 16e1, the upper rear surface portion 16g1, and the upper side surface portion 16d1 are the upper surface portions. It consists of the same material as 16c.

  In particular, as the upper surface portion 16c, urethane synthetic leather having stretchability is used. However, in order to place importance on waterproofness and moisture proofing, the stretchability has sufficient stretchability to allow the mat layer to be displaced when the back is raised. Cannot have. Therefore, in this embodiment, in order to compensate for the lack of stretchability of the upper surface portion 16c, the side surface portion 16d2 is provided with a second stretchable member 17b. It assists the gap between the mat layers. In addition, it is preferable that the upper surface portion 16c is slightly longer than the mat layer 11 and is slightly loosened.

  With this configuration, the first mat layer 11, the second mat layer 12, and the third mat layer 13 of the mattress 10 relatively move when the back is raised, as shown in FIGS. The upper body part of the outer cover member 16 needs to be stretched. In the first embodiment, the upper surface portion 16c of the outer cover member 16 is a material that gives priority to sealing properties as described above and does not have much elasticity. In other words, it does not have extensibility to allow a deviation at the time of raising the back, but is provided with a little slack (that is, the outer cover member is slightly longer than the length of the mat layer 13). At the same time, since the side surface portion 16d is made of the second elastic member 17b having elasticity, the upper body side 16a of the outer cover member 16 is relatively displaced from the mat layers 11, 12, and 13 when the back is raised. Accordingly, the mat layer 13 is allowed to slip upward.

  In the first embodiment, the first elastic member 17a and the second elastic member 17b constitute the elastic member 17. However, the elastic member 17 including the upper body side of the lower surface portion 16f may be used. Furthermore, it is good also as the expansion-contraction member 17 also including the upper body side of the upper surface part 16c.

  In the first embodiment, as described above, a sliding member is interposed on the upper body side between the mat layers 11, 12, and 13 of the mattress 10, and the mat layers are in direct contact with each other on the lower body side. The upper body side is displaced from each other, and the lower body side is not displaced. At the same time, in order to prevent the upper body side of the mattress 10 (including the outer cover member 16 and the inner cover member 18) from moving upward with respect to the bed 1 and to prevent the lower body side from shifting, An anti-slip member 20 is provided. The anti-slip member 20 is laid between the bed 1 and the mattress 10 so as to cover the knee bottom 4 from the seat bottom 3 and further cover a part of the leg bottom 5. . That is, an anti-slip member 20 made of a material having a high friction coefficient, such as a urethane sheet, is laid from the heel part D to the knee part C. The width of the anti-slip member 20 is not limited as long as the width of the seat bottom 3 is full, as long as the lateral width of the lying person's buttocks D is located.

  An operation state when the back raising operation is performed in the first embodiment will be described with reference to FIG.

  In this operation mechanism, the connecting portion between the knee bottom 4 and the leg bottom 5 is lifted upward by the hoisting mechanism 6 at the initial stage of the tilting operation of the back bottom 2. In this operation state, conventionally, a movement in which the mattress is displaced in the foot direction is seen. However, in the present invention, since the anti-slip member 20 is laid on the upper surface of the bed 1 and straddling a part of the seat bottom 3, the knee bottom 4, and the leg bottom 5, the knee bottom 4 and the leg bottom 5 When the connecting portion is raised, the anti-slip member 20 is pressed toward the connecting portion by a person's knee or the like, so that the anti-slip member 20 is prevented from shifting downward (in the foot direction). Since the person's buttocks D of the seat bottom 4 rides on the slip prevention member 20 and the person's weight is increased, the seat bottom 3 and the mattress 10 are sandwiched with the slip prevention member 20 interposed therebetween. It comes into close contact, and relative displacement is prevented.

  When the back bottom 2 is further inclined further continuously, the upper half sides 11a, 12a, 13a of the mat layers 11, 12, 13 of the mattress 10 are raised by the inclination of the back bottom 2. At this time, the upper half sides 11 a, 12 a, 13 a and the lower half sides 11 b, 12 b, 13 b of the mat layers 11, 12, 13 may be bent at an acute angle as if the back bottom 2 and the seat bottom 3 are bent. However, the upper half side of the mattress 10 is shifted upward with respect to the back bottom 2 because it is gently bent. That is, as the upper body side 18a (the upper half side of the mattress 10) of the inner cover member 18 is largely inclined, as shown in FIGS. At this time, since the first sliding member 14 and the second sliding member 15 are laid between the mat layers 11, 12, and 13, the slippage is smoothly generated without causing a feeling of pressure on the buttocks and back of the person lying down. Moreover, it is possible to raise the back without causing discomfort. Further, when the mattress 10 is returned to the original flat state, the mat layer 11, 12, 13 can return to the original state with a smooth shift.

  That is, since it is easy to slip between the lower surface sliding material 14a and the upper surface sliding material 14b of the first sliding member 14, the second mat layer 12 slides with respect to the first mat layer 11 and moves upward. It can be done smoothly. Similarly, since the space between the lower surface sliding material 15a and the upper surface sliding material 15b of the second sliding member 15 is easy to slide, the third mat layer 13 slides relative to the second mat layer 12 and moves upward. Can be done smoothly.

In particular, since the first sliding member 14 and the second sliding member 15 are folded at the folded portions 14d and 15d, respectively, they can be easily laid and also wrinkled when they slide or return to each other. It is hard to become.
(Embodiment 2)
The second embodiment will be described with reference to FIGS. In the second embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted. 6 shows a cross-sectional view of the mattress according to the second embodiment, and FIG. 7 shows a perspective view of the cover member of the mattress. FIG. 8 shows a state in which a part of the mattress is widened and opened in order to explain the displacement of the mattress. In FIG. 6, the first mat layer 11, the second mat layer 12, and the third mat layer 13 are wrapped in an inner cover member 28. The inner cover member 28 includes a first inner bag-shaped portion 281 that wraps the upper half of the first mat layer 11, a second inner bag-shaped portion 282 that wraps the upper half of the second mat layer 12, and a third mat layer 13. It has the 3rd inner bag-like part 283 which wraps the upper half side half, and the large inner bag-like part 284 which wraps the lower half side half of the 1st mat layer 11, the 2nd mat layer 12, and the 3rd mat layer 13.

  The upper surface lubricant 28b is formed on the upper surface of the first inner bag-shaped portion 281, the lower surface lubricant 28a is formed on the lower surface of the second inner bag-shaped portion 282, the upper surface lubricant 28b is formed on the upper surface of the second inner bag-shaped portion 282, and the third inner bag shape is formed. A lower surface lubricant 28a is provided on the lower surface of the portion 283, and the other part has a net-like structure such as a synthetic resin. In particular, the upper surface sliding material 28b and the lower surface sliding material 28a are continuously formed from a single sheet material made of synthetic resin such as polyethylene and polyester, and are sewn and joined to a net-like portion.

  The outer cover member 26 is a bag member that wraps the first mat layer 11, the second mat layer 12, and the third mat layer 13 together. Note that the length of the outer cover member 26 is longer than the length of the internal third mat layer 13 so that the third mat layer 13 allows a displacement of the second mat layer 12 when the back is raised. It has become.

  In the second embodiment, the mat layers 11, 12, and 13 can be relatively smoothly displaced when raising the back by the upper surface lubricant 28 b and the lower surface lubricant 28 a of the inner cover member 28. At the same time, when the back is raised, a smooth shift can be generated to reliably reduce the feeling of pressure on the back and buttocks of the person lying down.

  In the second embodiment, the upper-surface sliding material 28b and the lower-surface sliding material 28a are not in the net structure, but are in the form of a film sheet, but may have a net structure in the same manner as other portions. In addition, the other net portion may be the same structure as the upper surface sliding material 28b and the lower surface sliding material 28a and formed together.

In the second embodiment, the sliding member is provided between the first mat layer 11 and the second mat layer and between the second mat layer 12 and the third mat layer, but may be provided only between the first mat layer 11 and the second mat layer.
(Embodiment 3)
The third embodiment will be described with reference to FIGS. In the third embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted. FIG. 9 shows a cross-sectional view of the mattress of the third embodiment. FIG. 10 shows a state where a part of the mattress is widened and opened in order to explain the displacement of the mattress. FIG. 11 is a perspective view of the outer cover member. In FIG. 9, the first mat layer 11, the second mat layer 12, and the third mat layer 13 are wrapped in a net-like inner cover member 28 made of synthetic resin or the like. The inner cover member 28 includes a first inner bag-shaped portion 281 that wraps the upper half of the first mat layer 11, a second inner bag-shaped portion 282 that wraps the upper half of the second mat layer 12, and a third mat layer 13. It has the 3rd inner bag-like part 283 which wraps the upper half side half, and the large inner bag-like part 284 which wraps the lower half side half of the 1st mat layer 11, the 2nd mat layer 12, and the 3rd mat layer 13. An outer cover member 36 is covered on the outer side of the inner cover member 28.

  The third embodiment is different from the second embodiment in that a sheet-like sliding member is not used as the lower surface sliding material 28a and the upper surface lubricating material 28b as in the second embodiment, but is configured by the same net as other portions. Is a point. In this case, the manufacturing cost of the inner cover member 28 can be reduced and the assembly is easy.

  Similarly to the inner cover member 28, the outer cover member 36 also includes a first outer bag-shaped portion 361 that wraps the upper half of the first mat layer 11 and a second outer bag-shaped portion that wraps the upper half of the second mat layer 12. 362, a third outer bag-shaped portion 363 that wraps the upper half of the third mat layer 13 and a large outer bag that wraps the entire lower half of the first mat layer 11, the second mat layer 12, and the third mat layer 13 Part 364. The lower surface lubricant 36a and the upper surface lubricant 36b are provided on the surfaces of the first outer bag-shaped portion 361, the second outer bag-shaped portion 362, and the third outer bag-shaped portion 363 that are in contact with each other, and the inner cover member 28 of the second embodiment. It is provided in the same way. With this structure, when the back is raised, the lower surface sliding material 36a and the upper surface sliding material 36b can be displaced relatively smoothly. The lower surface sliding material 36a and the upper surface sliding material 36b are made of a sheet material made of synthetic resin such as polyethylene or polystyrene which is easy to slide, and the other parts are made of low cost nylon or the like.

  As shown in FIG. 11, the upper surface cover 365 is pushed down so as to turn over so as to wrap up the first outer bag-shaped portion 361, the second outer bag-shaped portion 362, and the third outer bag-shaped portion 363, It looks good. The top cover 365 may not be provided integrally with the outer cover member 36 but may be a separate member. The inner cover member 28 can be taken out by opening and closing the chuck portion 366.

  When the first outer bag-like portion 361, the second outer bag-like portion 362, and the third outer bag-like portion 363 of the outer cover member 36 are separated and difficult to carry before covering the upper surface cover 365. The string members with the magic band may be grouped together so that they do not fall apart.

  In the third embodiment, when the back is raised, the net-like lower surface sliding material 28a and the upper surface sliding material 28b slide smoothly with each other, so that when the back is raised, the first mat layer 11 and the second mat disposed inside The layer 12 and the third mat layer 13 can perform a relatively smooth displacement operation.

  In the third embodiment, the inner cover member 28 is entirely made of a net-like member, but may have a structure similar to that of the second embodiment.

  In the present invention, the end portion 14c of the first sliding member 14 and the end portion 15c of the second sliding member 15 are easier to position and lay when fixed, and the positions are greatly shifted even when back raising is repeated. In the first embodiment, the first sliding member 14 and the second sliding member 15 are sewn and fixed to the inner cover member 18, and in the second embodiment, they are part of the inner cover member 28. . As described above, in the structure in which the first sliding member 14 and the second sliding member 15 are not fixed to the inner mat layer, not only the sliding member but also the mat layer and the sliding member slip, and the mat layer is smoothly displaced. It is excellent in that it can be replaced and washed separately from the mat layer.

  In addition, you may fix the 1st sliding member 14 and the 2nd sliding member 15 to other members, for example, each mat layer 11, 12, 13, etc. instead of the inner cover member 18. FIG. In that case, the ends of the first sliding member 14 and the second sliding member 15 are fixed to the ends of the mat layers 11, 12, and 13, and the first sliding member 14 and the second sliding member 15 are fixed. It is preferable that the part which does not exist can be slid with respect to each mat | matte layer 11,12,13.

  Further, in some cases, it is possible to simply lay the mat layer between the mat layers without fixing. The fixing means may not be stitched, and may be fixing means such as adhesion and snapping.

  In any of the above embodiments, the first sliding member 14 and the second sliding member 15 are disposed between the first mat layer 11 and the second mat layer 12 and between the second mat layer 12 and the third mat layer 13. However, in some cases, it may be interposed only in one side. In any of the embodiments, the first mat layer 11, the second mat layer 12, the third mat layer 13 and the three layers are stacked. However, the present invention is not limited to the three layers, and the two layers, the four layers, It may be a laminate of layers, 5 layers, etc.

  In the present invention, the anti-slip member 20 is superior in displacement prevention function when it has a length from the seat bottom 3 to the connecting portion between the knee bottom 4 and the leg bottom 5. However, depending on circumstances, only the seat bottom 3 may be laid with a length from the seat bottom 3 to the knee bottom 4 or the like. The length of the anti-slip member 20 in the lateral width direction may be shorter than the lateral width of the seat bottom 3 as in the first embodiment, or may be the same size as the lateral width of the seat bottom 3.

  In the above embodiment, the slip prevention member 20 is provided to control the slip between the bed 1 and the mattress 10, but the relative slip between the bed 1 and the mattress 10 is less worrisome. In the case where the anti-slip member 20 is provided, the anti-slip member 20 may be omitted.

  Further, each bottom of the bed has a net shape, but is not limited thereto.

  The mattress 10 is not limited to the cushion material such as urethane, and various mattresses such as an air mattress, a water mattress, and a mattress with a cushion material can be used.

  As described above, the present invention provides a bed that can be lifted and cared for as needed, or can be relaxed in a comfortable posture by raising the bed back, particularly suitable for nursing a sick or elderly person. Applicable to beds with lifting function.

1 bed 10 mattress 11 first mat layer 12 second mat layer 13 third mat layer 14 first sliding member 14d folded portion 15 second sliding members 16, 26, 36 outer cover members 18, 28 inner cover members

Claims (4)

The upper body portion of a person is placed in the back lifting Beds having a movable portion to cause the upper tilting operation has flexibility to bending deformation in accordance with the inclination angle of the movable part, separable therefrom vertically lying A mattress comprising a plurality of laminated mat layers, a removable cover member covering all the mat layers, and a sheet-like sliding member positioned between the mat layers corresponding to the upper body portion of the lying person The plurality of mat layers are configured such that the lower half sides of the plurality of mat layers are stacked so as to be able to be brought into contact with and separated from each other so that the mat layers do not come into contact with each other and do not shift. The upper part and the lower part of the movable part are vertically laminated and the upper part of the upper part and the lower part of the lower part are sandwiched by the upper body between the mat layers, and the movable part is inclined upward. Along with The upper half of the layer is configured to be displaced from each other, and each end on the opposite side of the folded portion of the upper surface and the lower surface is fixed to the end corresponding to the head of the person lying on the cover member. Mattress characterized by being made . The mattress according to claim 1, wherein a portion corresponding to the upper side lower side surface of the cover member and a collar portion of the lower surface portion is formed of an elastic member . It is placed on a bed that can be raised up with a movable part that raises the upper body part of a lying person by an upward tilting action, and has the flexibility to bend and deform according to the inclination angle of the movable part , and can be moved up and down A mattress comprising a plurality of laminated mat layers, a removable cover member covering all the mat layers, and a sheet-like sliding member positioned between the mat layers corresponding to the upper body portion of the lying person The plurality of mat layers are in contact with each other with the lower body side of the plurality of mat layers being stacked so as to be able to contact and separate from each other, and the cover member does not cause any deviation. A bag-like portion for wrapping a portion corresponding to the upper body side of the lying person and a large bag-like portion for wrapping together a portion of the mat layer corresponding to the lower half side of the lying person. The surfaces facing each other are configured so that the upper surfaces of the plurality of mat layers are displaced with each other by the upward movement of the movable portion by the sheet-like upper surface lubricant and the sheet-like lower surface lubricant. A mattress characterized in that each bag-like part has a net-like structure other than the mutually facing surfaces . 4. The mattress according to claim 3, wherein the upper surface lubricant and the lower surface lubricant have a net-like structure .

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