JP2021019741A - bed - Google Patents

Abstract

To provide a bed that can replace a sheet being laid on a surface of a mattress easily and simply.SOLUTION: A bed includes a mattress 12a-d to be placed on a bed floor 8 of a bed body 4, and a lift mechanism for lifting a person lying on the mattress 12a-d. The lift mechanism includes: a pair of lifting/lowering supporting members 18, 20; multiple lifting members 26 stretched therebetween; and a lift drive mechanism for lifting and driving the lifting/lowering supporting members 18, 20. A storage slit 14 is provided in the mattress 12a-d, and the sheet is laid in the bottom of the multiple lifting members 26. When the lifting/lowering supporting members 18, 20 are positioned in a lowered position, a part of the lifting members 26 and the sheet is stored in the storage slit 14 of the mattress 12a-d. Also, when the lifting/lowering supporting members 18, 20 are moved to a lifted position, the lifting members 26 lift up the person lying on the mattress 12a-d.SELECTED DRAWING: Figure 1

Description

The present invention relates to a bed used when a sick person, an elderly person, etc. lie down.

As a bed, a nursing bed that facilitates sheet replacement has been proposed (see, for example, Patent Document 1). This nursing bed is equipped with a bed body, and a pair of head lift blocks are vertically attached to both sides of the headboard of the bed body, and a pair of foot lift blocks are freely movable up and down on both sides of the footboard. It is attached.

One lift bar is arranged on one side in the longitudinal direction of the head body, one end side of the lift bar is supported by one head side lift block, the other end side is supported by one foot side lift block, and these one side head side lifts. As the block and the foot side lift block move up (or go down), one of the lift bars moves up (or goes down).

Further, the other lift bar is arranged on the other side in the longitudinal direction of the head body, one end side of the lift bar is supported by the other side head side lift block, and the other end side is supported by the other side foot side lift block. As the other side of the head lift block and the foot side lift block rise (or fall), the other lift bar is moved up (or down).

When changing sheets, insert a net (or cloth, etc.) between the bed rester (old man, sick person, etc.) and the sheets laid on the mattress, tie one side of the inserted net to one lift bar, and the other side to the other. Tie to the lift bar. Then, in the state where the net is connected to the pair of lift bars in this way, when the lifting drive means is operated to move the pair of head side lift blocks and the pair of foot side lift blocks upward at the same time and position them in the ascending position, these The net is moved upward through the lift block, and the person who was lying down (old man, sick person, etc.) is lifted upward by the net. In such an upwardly lifted state, the upper part of the mattress is opened, and the old sheets laid on the mattress can be easily removed and new sheets can be easily attached.

Japanese Unexamined Patent Publication No. 9-19462

However, such a nursing bed has the following problems. When changing sheets, it is necessary to insert a net (cloth, etc.) under the bed resting person (old man, sick person, etc.) and tie both sides of the inserted net to a pair of lift bars. The work of inserting the net to the lower side requires moving the person lying down, which is a considerable amount of labor for the caregiver, and the work of connecting the net to the lift bar is difficult because there are many connecting points. It becomes complicated and takes time for the work.

An object of the present invention is to provide a bed in which the sheets laid on the surface of a mattress can be easily and easily replaced.

The bed according to claim 1 of the present invention includes a bed body installed on the floor surface, a mattress placed on the bed floor of the bed body, and a person lying on the sheets laid on the mattress. In a bed equipped with a lift mechanism for lifting
The lift mechanism comprises a pair of elevating support members arranged on both sides of the bed body, a plurality of lifting members provided at intervals between the pair of elevating support members, and the pair of elevating support members. The mattress is provided with an elevating drive mechanism for ascending / descending between the lower descending position and the upper ascending position of the bed body, and the mattress has a storage slit corresponding to the plurality of lifting members of the lift mechanism. The sheets are laid between the mattress and the plurality of lifting members of the lift mechanism.
When the pair of elevating support members are located in the descending position, the plurality of lifting members of the lift mechanism and a part of the sheets are housed in the corresponding storage slits of the mattress, and the pair of elevating supports. When the member moves to the raised position, the plurality of lifting members of the lift mechanism are characterized in that they are separated from the storage slit of the mattress and lift a person lying on the mattress upward.

Further, in the bed according to claim 2 of the present invention, the plurality of lifting members are configured to change into a first state narrow in the width direction and a second state expanding in the width direction, and the storage of the bed body. It is characterized in that it is configured to be in the first state when it is stored in the slit and to be in the second state when it is removed from the storage slit.

Further, in the bed according to claim 3 of the present invention, a sheet changing device is provided in connection with the bed body, and the sheet changing device includes a sheet sending unit for sending out the sheets and a sheet for winding up the sheets. It is characterized in that the sheets provided with a winding portion and sent out from the sheet sending portion are wound around the sheets winding portion through the surface side of the bed floor portion of the bed body.

Further, in the bed according to claim 4 of the present invention, the sheet sending portion of the sheet changing device is arranged on one side of the bed floor portion in the longitudinal direction or the lateral direction of the bed body, and the sheets. The take-up portion is provided on the other side of the bed floor portion in the longitudinal direction or the lateral direction of the bed body.

Further, in the bed according to claim 5 of the present invention, a plurality of sheets fixing means are provided at intervals at the opposite end portions of the sheets, and the bed floor portion or the mattress of the bed body is provided with a plurality of sheets fixing means. A plurality of fixed mounting means are provided corresponding to the plurality of sheet fixing means, and the plurality of sheet fixing means on the sheet side are attached to the bed floor or the plurality of fixed mounting means on the mattress side. It is characterized by.

Further, in the bed according to claim 6 of the present invention, the bed body includes support legs provided at four corners of the bed floor, and the elevating member is movably supported by the support legs. One elevating support member is supported between the pair of elevating members on one side supported by the support leg on one side of the bed floor, and is supported by the support leg on the other side of the bed floor. The other elevating support member is supported between the pair of elevating members on the other side.

Further, in the bed according to claim 7 of the present invention, the bed body includes support legs provided at four corners of the bed floor, and the pair of elevating support members are attached to the bed floor. A pair of elevating and lowering support portions in a support frame body that is moved up and down with respect to the support frame body. It is characterized in that it is supported so as to be able to move up and down.

Further, in the bed according to claim 8 of the present invention, the bed body is provided with support legs provided at four corners of the bed floor, and a support having a worm gear portion on the outer peripheral surface of the support legs. The shaft is rotatably supported, and one elevating support member is meshed between the worm gear portions of the pair of support shafts on one side supported by the support legs on one side of the bed floor portion, and the other of the bed floor portion. It is characterized in that the other elevating support member is meshed between the worm gear portions of the pair of support shafts on the other side supported by the support leg portion on the side.

Further, the bed according to claim 9 of the present invention is a bed body installed on the floor surface, a mattress placed on the bed floor of the bed body, and a bed resting on the sheets laid on the mattress. It is equipped with a body support mechanism to support the person who does it.
The body support mechanism includes a pair of body support members arranged on both sides of the bed body, and a plurality of body support members provided at intervals between the pair of body support members.
The bed floor is configured to be able to move up and down between a normal position in which the body is supported by the mattress and a lowering position lowered from the normal position, and the bed floor is moved up and down in relation to the bed floor. An elevating drive mechanism is provided to allow the vehicle to move.
Further, the mattress is provided with storage slits corresponding to the plurality of body support members of the body support mechanism, and the sheets are provided between the mattress and the plurality of body support members of the body support mechanism. Lay out,
When the bed floor is located in the normal position, the plurality of body support members of the body support mechanism and a part of the sheets are housed in the corresponding storage slits of the mattress, and the bed floor is When moved to the descending position, the plurality of body support members of the body support mechanism are characterized in that they come off from the storage slit of the mattress and support a person lying on the mattress.

According to the bed according to claim 1 of the present invention, a pair of elevating support members are provided on both sides of the bed body, and a plurality of lifting members are arranged at intervals between the elevating support members, and the bed body. The mattress placed on the floor of the mattress is provided with a plurality of storage slits, and the sheets covering the mattress are laid between the mattress and the plurality of lifting members, so that a pair of elevating support members are positioned in the descending position. When doing so, the multiple lifting members of the lift mechanism and some of the sheets are housed in the storage slits of the mattress so that these lifting members do not affect the body of the person lying down and lie down comfortably. Can be done. Also, when the pair of elevating support members move to the ascending position, the plurality of lifting members disengage from the storage slits of the mattress and lift the person lying on the mattress upward, which opens the upper part of the mattress and covers the mattress. Can be easily and easily replaced with new sheets by removing. In this way, the pair of elevating support members can be moved from the lowered position to the raised position to replace the sheets and then returned to the lowered position to return to the original state, and thus the person lying on the mattress. Sheets can be exchanged without moving the sheets, and the work load on workers (caregivers, etc.) can be reduced.

Further, according to the bed according to claim 2 of the present invention, since the plurality of lifting members are in the first state when they are stored in the storage slits of the bed body, the width of these storage slits is reduced to lie down. It is possible to reduce the discomfort to the person, and when it comes out of the storage slit, it is in the second state, so when the person is lifted, it is expanded and acts on a large area, which bites into the body. Can be provided as a body-friendly product.

Further, according to the bed according to claim 3 of the present invention, since the sheet changing device is provided in connection with the bed body, the sheets can be easily changed. Further, the sheet changing device includes a sheet sending section for sending out the sheets and a sheet winding section for winding the sheets, and the sheets sent out from the sheet sending section pass through the surface side of the bed floor and take up the sheets. By wrapping the sheet on the mattress around the sheet take-up section, the new sheets will cover the mattress and therefore the sheets can be changed very easily.

Further, according to the bed according to claim 4 of the present invention, the sheet delivery portion of the sheet changing device is arranged on one side of the bed floor portion in the longitudinal direction (or lateral direction) of the bed body, and the sheet winding portion. Is arranged on the other side of the bed floor in this longitudinal direction (or lateral direction), so that the sheets sent out from the sheet sending section can be wound around the sheet winding section through the surface side of the bed floor. it can.

Further, according to the bed according to claim 5 of the present invention, a plurality of sheets fixing means are provided at intervals at the opposite end portions of the sheets, and a plurality of sheets are provided on the bed floor portion (or mattress) of the bed body. Since the fixed mounting means of the bed sheet is provided, it is possible to prevent the sheets covering the mattress from slipping by attaching the plurality of sheet fixing means on the sheet side to the plurality of fixed mounting means on the bed floor (or the mattress side). it can.

Further, according to the bed according to claim 6 of the present invention, support legs are provided at four corners of the bed floor of the bed body, and elevating members are movably supported by these support legs to support the bed. One elevating support member is supported between the pair of elevating members on one side of the floor, and the other elevating support member is supported between the pair of elevating members on the other side of the bed floor. By raising them at the same time, the pair of elevating support members can be moved to the ascending position, and by lowering these elevating members at the same time, the pair of elevating support members can be moved to the lowering position.

Further, according to the bed according to claim 7 of the present invention, support legs are provided at the four corners of the bed floor of the bed body, and the pair of elevating support members are a pair of elevating support portions in the support frame body. Since the elevating part of the support frame is supported by the support legs of the bed body in an ascending / descending manner, the elevating part of the support frame can be raised at the same time to move the support frame to the ascending position. By lowering these elevating parts at the same time, the support frame can be moved to the lowered position.

Further, according to the bed according to claim 8 of the present invention, support legs are provided at four corners of the bed floor of the bed body, and a support shaft having a worm gear on the outer peripheral surface of these support legs rotates. It is freely supported, and one elevating support member is meshed between the worm gear portions of the pair of support shafts on one side of the bed floor, and the other elevating support member is meshed between the worm gear portions of the pair of support shafts on the other side. Therefore, by simultaneously rotating these support shafts in the ascending direction, the pair of elevating support members can be moved to the ascending position, and by simultaneously rotating these support shafts in the descending direction, a pair of elevating support members can be moved. The elevating support member can be moved to the descending position.
It is characterized in that the members are engaged.

Further, according to the bed according to claim 9 of the present invention, the bed floor portion is configured to be able to move up and down between the normal position and the lowering position lowered from the normal position with respect to the bed body, and the body support mechanism. Since the bed floor is lowered with respect to the plurality of body support members, it is possible to create a sheet exchange space between the bed floor and the body support mechanism by positioning the bed floor in the lowered position. Therefore, the sheets can be easily exchanged by using this sheet exchange space, and thus the same effect as described above can be obtained.

The perspective view which shows the 1st Embodiment of the bed according to this invention simply. FIG. 3 is a perspective view showing a state in which the elevating support member of the bed of FIG. 1 is positioned at a descending position. A partially enlarged cross-sectional view showing a part of the mattress in the bed of FIG. 1 in an enlarged manner. It is a figure simply showing the 1st deformation form of a lifting member, FIG. 4A is a partially enlarged simplified view which shows the contracted state, and FIG. 4B is a partially enlarged simplified view which shows the expanded state. It is a figure which shows the 2nd deformation form of the lifting member simply, FIG. 5A is a partially enlarged simplified view which shows the contracted state, and FIG. 5B is a partially enlarged simplified view which shows the expanded state. The front view which simply shows the state when the elevating support member is in a descending position in the bed of FIG. The front view which simply shows the state when the elevating support member is in an ascending position in the bed of FIG. The front view which shows the 2nd Embodiment of the bed according to this invention simply. The front view which shows the state which the elevating support member of the bed of FIG. 8 is positioned in the ascending position simply. The perspective view which shows the 3rd Embodiment of the bed according to this invention simply. The perspective view which shows the 4th Embodiment of the bed according to this invention simply. FIG. 5 is a plan view showing the sheets used for the bed of FIG. The perspective view which shows the fifth embodiment of the bed according to this invention simply. The bottom view which shows the elevating drive mechanism of the bed of FIG. 13 simply. FIG. 3 is a partially enlarged cross-sectional view showing a part of the internal structure of the support leg portion of the bed body in the bed of FIG.

Hereinafter, various embodiments of the bed according to the present invention will be described with reference to the accompanying drawings.

<First embodiment of the bed>
First, a first embodiment of a bed according to the present invention will be described with reference to FIGS. 1 to 7. In FIGS. 1 and 2, the illustrated bed 2 includes a bed body 4 installed on the floor surface of a nursing care facility, a hospital, a home, etc., and a support frame body 6 supported by the bed body 4, and the support frame body 6 is provided. The frame body 6 can move up and down between the ascending position shown in FIG. 1 and the descending position shown in FIG. In FIGS. 1 and 2, sheets are omitted for ease of understanding. In addition, a headboard and a footboard may be provided in such a bed body 4.

Explaining the bed body 4, the bed body 4 has a bed floor portion 8 for a person to lie down. The bed floor 8 has a substantially rectangular shape, and support legs 10 (10a to 10d) are provided at the four corners thereof, and the lower portions of the support legs 10a to 10d project downward from the bed floor 8 to support them. The lower part of the legs 10a to 10d is installed on the floor surface. Further, the upper portions of the support legs 10a to 10d project upward from the bed floor 8 and extend.

A mattress 12 is placed on the upper side of the bed floor 8. The mattress 12 has a substantially rectangular shape corresponding to the shape of the bed floor portion 8, and such a mattress 12 is formed of, for example, urethane foam having cushioning properties, low-resilience urethane foam, or the like. In this embodiment, the four corners of the mattress 12 are provided with accommodating recesses 12a to 12d corresponding to the supporting legs 10a to 10d of the bed body 4, and the supporting legs 10a to 10d corresponding to these accommodating recesses 12a to 12d. A portion (a portion of the upper portion protruding upward from the bed floor 8) is accommodated, and the upper surface portion of the mattress 12 is located slightly above the upper ends of these support legs 10a to 10d. By configuring the above, the positioning of the support frame 6 to the lowering position, which will be described later, is permitted.

For example, in the case where the bed floor portion 8 has a rectangular shape and the support legs 10a to 10d are arranged outside the bed floor portion 8, a rectangular mattress 12 can be used. As such a mattress 12, an air mattress, a water mattress, or the like can also be used.

As the bed body 4, various forms known per se can be used, and for example, a bed body 8 may be used in which the position of the bed floor 8 can be adjusted in the vertical direction. Further, for example, a headboard may be provided on the head side of the bed floor 8 and a footboard may be provided on the foot side of the head floor 8. In such a case, the head of the bed body 8 may be used. The board and footboard are installed on the floor. Further, for example, a form having no support legs 10a to 10d may be used. In this case, the bed floor 8 is directly installed on the floor surface.

With reference to FIG. 3, the mattress 12 is provided with a plurality of storage slits 14 at intervals in the longitudinal direction (the direction from the lower left to the upper right in FIGS. 1 and 2 and the left-right direction in FIGS. 6 and 7). Each storage slit 14 is straight from one side end to the other side end of the mattress 12 in the lateral direction (the direction from the lower right to the upper left in FIGS. 1 and 2 and the direction perpendicular to the paper surface in FIGS. 6 and 7). It extends like a shape. The distance W (see FIG. 3) of these storage slits 14 is provided at, for example, about 5 to 30 cm (preferably about 10 to 15 cm), and their depth H (see FIG. 3) is, for example, about 3 to 10 cm (see FIG. 3). It is preferably formed to about 5 to 8 cm).

In this embodiment, the plurality of storage slits 14 are provided at intervals in the longitudinal direction (longitudinal direction) of the mattress 12, but may be provided at intervals in the lateral direction thereof. The storage slit is provided in a straight line from one end side to the other end side of the mattress 12 in the longitudinal direction.

Although the illustrated mattress 12 is integrally formed as a whole, it may be composed of a lower lower main body portion and an upper upper main body portion (this configuration is not shown). In this case, the lower main body is placed on the bed floor 8 of the bed main body 4, the upper main body is placed on the upper side of the lower main body 4, and a plurality of storage slits 14 are provided in the upper main body. Therefore, in such a form, when the storage slit 14 is worn or the like, it can be dealt with only by replacing the upper main body portion.

Next, the support frame body 6 will be described. The illustrated support frame body 6 includes a rectangular frame body portion 16, and the frame body portion 16 has a pair of elevating support portions 18 and 20 facing each other. , Both ends of these elevating support portions 18 and 20 are connected by connecting portions 21 and 23. The frame body 16 is slightly larger than the outer diameter of the mattress 12, and when the support frame 6 is located in the descending position, as shown in FIG. 2, the frame body 16 (a pair of elevating support parts 18, 20 and the pair of connecting portions 21.23) are located outside the mattress 12.

In this embodiment, four elevating portions 22 (22a to 22d) are provided on the four corner portions of the frame body portion 16 corresponding to the support leg portions 10 (10a to 10d) on the bed body 4 side, and these four elevating portions 22 (22a to 22d) are provided. The elevating portions 22a to 22d are movably supported in the corresponding support legs 10a to 10d. The support frame 6 (elevating support portions 18, 20, connecting portions 21.23, and elevating portions 22a to 22d) is for lifting a person lying on the mattress 12 upward, as will be described later. When sufficient strength is required, for example, it is formed of a metal material such as iron, stainless steel, or aluminum, and when sufficient strength can be secured, it can also be formed of carbon fiber, wood, plastic, or the like.

A plurality of lifting members 26 are stretched between the pair of elevating support portions 18 and 20 of the support frame body 6 corresponding to the storage slits 14 of the mattress 12. The lifting member 26 can be formed of, for example, a string-shaped member or a rope-shaped member that can be formed of a non-woven fabric, a woven cloth, or the like. In this case, both ends thereof are connected to the elevating support portions 18 and 20. It is attached to the frame body portion 16. Alternatively, it can be formed from a metal wire having an outer diameter of about 3 to 5 m, and in this case, both ends thereof are attached to the elevating support portions 18 and 20 by welding, for example, and in such a metal one, those It is preferable to cover the periphery with a soft material such as non-woven fabric or woven cloth.

In this embodiment, a plurality of storage slits 14 are provided at intervals in the longitudinal direction of the mattress 12, and correspondingly, a plurality of lifting members 26 are spaced between the elevating support portions 18 and 20 of the support frame body 6. However, when these storage slits are provided at intervals in the lateral direction of the mattress 12 instead of such a configuration, the plurality of lifting members 26 are connected to the support frame body 6 at 21.23. It is stretched between them, and the connecting portion 21.23 functions as an elevating support portion.

Although not shown, the bed 2 is provided with an elevating drive mechanism for moving the support frame 6 up and down. For this elevating drive mechanism, for example, a cylinder mechanism 25 (25a to 25c) using air pressure, hydraulic pressure, or the like (in FIGS. 1 and 2, only the one built in the support legs 10a to 110c is shown) is used. Can be done. The cylinder mechanism 25 (25a to 25c) is built in each support leg portion 10 (10a to 10d) of the bed body 4, and its output portion is connected to the corresponding elevating portion 22 (22a to 22d) of the support frame body 6. Will be done.

Since it is configured in this way, the support frame 6 and the elevating drive mechanism (not shown) form a lift mechanism for lifting a person lying down, and the cylinder mechanisms 25 (25a to 25c) of the elevating drive mechanism extend at the same time. Then, the support frame body 6 is lifted and positioned in the ascending position, and when these cylinder mechanisms 25 (25a to 25c) are simultaneously contracted, the support frame body 6 is lowered and positioned in the descending position.

In this bed 2, when the support frame 6 descends to the descending position shown in FIG. 2, the plurality of lifting members 26 are completely housed in the corresponding storage slits 14 of the mattress 12, as shown enlarged in FIG. , Does not protrude outward from the surface of the mattress 14 (see FIG. 6). Since the lifting member 26 is stored in the storage slit 14 of the mattress 12 in this way, for example, when it is formed from a string-shaped member, its elongation is small so as not to press or deform the mattress 12. For example, 20% or less is preferable.

On the other hand, when the support frame body 6 rises to the ascending position shown in FIG. 1, the plurality of lifting members 26 move upward from the storage slit 14 of the mattress 12 as the support frame body 6 rises, and move upward on the bed body 4. An exchange space 28 for exchanging sheets is created between the mattress 12 of the above and the frame body portion 16 of the support frame body 6 in the raised position and the plurality of lifting members 26 (see FIG. 7).

When the bed body 4 is placed on the floor, a plurality of cylinder mechanisms 25 of the elevating drive mechanism are built in the headboard and the footboard, although not shown. For example, a pair of cylinder mechanisms on the headboard side are built in both sides of the headboard, and a pair of cylinder mechanisms on the footboard side are built in both sides of the footboard.

A cloth-like sheet 32 is laid on the surface side of the mattress 12. With reference to FIG. 3, the sheets 32 cover the entire upper surface of the mattress 12 and are interposed between the mattress 12 and the plurality of lifting members 26 of the support frame body 6. Therefore, when the support frame 6 is lifted to the raised position, the sheets 32 remain on the mattress 12 side as shown in FIG. 7, and when the support frame 6 is lowered to the lowered position, as shown in FIGS. 3 and 6, as shown in FIGS. A part of the sheets 32 is stored in the storage slit 14 of the mattress 12 together with the lifting member 26.

In such sheets 32, when the support frame body 6 moves to the lowered position, it is inserted into the storage slit 14 of the mattress 12, so that it is desirable that the sheets 32 have some elasticity. For example, woven cloth is preferable, but non-woven fabric is preferable. It may be. Further, as the material, cotton, synthetic fiber (for example, polyester, nylon, rayon, polypropylene, urethane, etc.) can be used. Further, as such a sheet 32, a normal type sheet is preferable, but a stretchable type sheet may be used.

As the lifting member provided on the support frame body 6, the member having the form shown in FIG. 4 or FIG. 5 may be used. In FIG. 4, in this first modified form, the lifting member 26A has a first state narrow in the lateral direction (horizontal direction in FIG. 4), that is, a standing state, and a second state extended in the lateral direction, that is, sleeping. It is attached to the frame body portion 16 of the support frame body 6 so as to rotate between the two states. As such a rotating mechanism (not shown) of the lifting member 26A, for example, a blind opening / closing mechanism can be applied.

When the support frame body 6 descends to the descending position, as shown in FIG. 4A, the plurality of lifting members 26A are in the first state (standing state), and the sheets 32 are placed in the storage slit 14 of the mattress 12. When the support frame body 6 is compactly stored together with a part and the support frame body 6 is raised to the raised position, the plurality of lifting members 26A are in the second state (sleeping state) as shown in FIG. It acts on the lifting member 26A with a large area on a person lying on the bed, and can be a support frame 6 that is kind to the person.

Further, in the second modified form, the lifting member 26B is bent in the lateral direction (horizontal direction in FIG. 5) and contracted, that is, the contracted state and the second state that expands and expands in the lateral direction, that is, It is attached to the frame body portion 16 of the support frame body 6 so as to be freely deployable between the unfolded state. As such a rotating mechanism (not shown) of the lifting member 26B, for example, a leaf spring or the like can be applied.

When the support frame body 6 descends to the descending position, as shown in FIG. 5A, the plurality of lifting members 26B are in the first state (bent contraction state), and the sheets 32 are contained in the storage slit 14 of the mattress 12. When the support frame body 6 is raised to the raised position, the plurality of lifting members 26B are in the second state (expanded state) as shown in FIG. 5 (b). It acts on the lifting member 26B with a large area on a person lying down, and can be a support frame body 6 that is friendly to the person.

In this second modified form, sliding members 34 are provided at both ends on the back side of the lifting member 26B, and by providing the sliding members 34 in this way, the sheets are stored in the storage slit 14 of the mattress 12. The lifting member 26B can easily slide with respect to 32.

Further, although not shown, the lifting member may be composed of an elongated balloon-shaped member. In this case, the support frame body 6 is located at a descending position (in other words, it is stored in the storage slit 14 of the mattress 12). When the support frame body 6 is in the raised position (in other words, it is removed from the storage slit 14 of the mattress 12), the lifting member is in the first state (contracted state) in which the air is evacuated. It becomes the second state (expansion state) filled with air, and even if it is configured in this way, the same effect as described above can be achieved.

Further, the lifting member may be made of a metal wire (for example, one having a diameter of about 3 mm), and the metal wire may be covered with a soft material such as cloth. In such a structure, sufficient strength may be obtained. Can be body-friendly.

Next, the method of using the bed 2 described above will be described mainly with reference to FIGS. 1 to 2, 6 and 7. When this bed 2 is used, as shown in FIG. 6, sheets 32 are laid between the mattress 12 and the plurality of lifting members 26 of the support frame body 6, and the support frame body 6 is lifted and lowered by a lifting drive mechanism (plural cylinder mechanisms). It is lowered by 25) and positioned at the lowering position. In the state of being positioned in the lowered position, the elevating portions 22 (22a to 22d) of the support frame body 6 are housed in the support leg portions 10 (10a to 10d) of the bed body 4, and a plurality of lifting members of the support frame body 6 are accommodated. The 26 is housed in the storage slit 14 of the mattress 12 together with a part of the sheets 32, and in such a state, the person sleeping on the bed 2 will lie down on the mattress 12 (see FIG. 6).

When the sheets 32 are replaced, as shown in FIG. 7, the support frame body 6 is raised by the elevating drive mechanism (plurality of cylinder mechanisms 25) and positioned at the raised position. When the support frame body 6 moves toward the ascending position, the elevating portion 22 (22a to 22d) of the support frame body 6 moves upward from the support leg portions 10 (10a to 10d) of the bed body 4, and the upward movement is performed. Along with this, the plurality of lifting members 26 of the support frame body 6 are separated from the storage slit 14 of the mattress 12 to lift the bed resting person P on the mattress 12 upward, and the sheets 32 on the mattress 12 and the plurality of lifting members of the support frame body 6 are lifted. An exchange space 28 is created between the room and the 26 (see FIG. 7). In such a state, the sheets 32 can be removed by inserting the hands of a worker (nurse, caregiver, etc.) into the exchange space 28, whereby the dirty sheets 32 can be easily removed. Can be done.

After removing the dirty sheets 32, the new sheets 32 are laid on the mattress 12 using the exchange space 28, and then the support frame 6 is lowered by the elevating drive mechanism (not shown) to the lowering position. It should be positioned at. In this way, the elevating portions 22 (22a to 22d) of the support frame body 6 are housed in the support leg portions 10 (10a to 10d) of the bed body 4, and the plurality of lifting members 26 of the support frame body 6 are newly laid. A person P on the support frame 6 (plurality of lifting members 26) is housed in the storage slit 14 of the mattress 12 together with a part of the sheets 32, and is placed on the mattress 12 in a lying state as shown in FIG. It will be in the original state (see FIG. 6).

In this way, in this bed 2, the person P lying on the mattress 12 can be lifted as it is by raising the support frame body 6, so that the operator does not have to lift the person P lying down on the mattress 12 and the sheets. The replacement work becomes easier, the burden of the replacement work is reduced, and the work becomes friendly to workers (nurses, caregivers, etc.).

<Second embodiment of the bed>
Next, a second embodiment of the bed according to the present invention will be described with reference to FIGS. 8 and 9. In the following embodiments, those substantially the same as those of the first embodiment are designated by the same reference numbers, and the description thereof will be omitted.

In FIGS. 8 and 9, in the bed 2C of the second embodiment, the bed body 4C includes a bed floor 8C on which the mattress 12 is placed, and a headboard 42 is provided on the head side of the bed floor 8C. A footboard 44 is provided on the foot side thereof, and the headboard 42 and the footboard 44 are installed on the floor surface.

In this second embodiment, the same support frame body 6 as in the bed of the first embodiment is used, and a pair of elevating portions 22a on one side (head side of the bed 2C) of the support frame body 6 (FIG. 8 and only one of them are shown in FIG. 9) are movably supported on both sides of the headboard 42, and a pair of elevating parts 22d (FIG. 8 and 9) on the other side of the support frame 6 (foot side of the head 2C). Is supported on both sides of the footboard 44 so as to be able to move up and down. Specifically, although not shown, the support frame 6 has, for example, a pair of cylinder mechanisms on one side built in both sides of the headboard 42 and a pair on the other side, as in the first embodiment. Cylinder mechanisms are built in both sides of the footboard 44, and the support frame body 6 is moved up and down in the vertical direction by expanding and contracting these cylinder mechanisms (which constitute the elevating drive mechanism).

In this second embodiment, the sheet sending section 46 is provided on the head side of the bed body 4C, the sheet winding section 48 is provided on the foot side thereof, and the sheet sending section 46 and the sheet winding section 48 are provided. , Consists of the sheet changing device 51. The sheet delivery unit 46 includes a substantially U-shaped feed support member 50, and the feed support member 50 is attached to, for example, the outer surface of the headboard 42. The feed support member 50 has a pair of support portions 52 (only one of which is shown in FIGS. 8 and 9) arranged at intervals in the lateral direction of the bed 2C, and a feed roll is provided between the support portions 52. The shaft portion 55 of 54 is rotatably supported.

Further, the sheet winding portion 48 includes a substantially U-shaped winding support member 56 in the same manner as the sheet sending portion 46, and the winding support member 56 is attached to, for example, the outer surface of the footboard 44. The take-up support member 56 has a pair of support portions 58 (only one of which is shown in FIGS. 8 and 9) arranged at intervals in the lateral direction of the bed 2C, and the take-up support member 56 is taken up between the support portions 58. The shaft portion 61 of the roll 60 is rotatably supported.

In this second embodiment, the sheets 32C used are long strips, and the sheets 32C are wound around the delivery roll 54. The sheets 32C wound around the delivery roll 54 are pulled out in the direction indicated by the arrow 62, passed through the upper side of the mattress 32, and wound around the winding roll 60.

For example, a take-up handle 64 is attached to the shaft portion 61 of the delivery roll 54, and by rotating the take-up handle 64 in the take-up direction, the dirty sheets 32C on the mattress 12 can be taken up. A new sheet 32C can be sent out from the delivery roll 54, and the surface of the mattress 12 can be covered with the new sheet 32C. Other configurations of the bed 2C of this second embodiment are substantially the same as those of the first embodiment described above.

In order to replace the sheets 32C in the bed 2C of the second embodiment, the operation may be as follows. That is, as shown in FIG. 9, a person who extends the cylinder mechanism (not shown) of the elevating drive mechanism, moves the support frame 6 upward to position it in the ascending position, and lays down on the mattress 12 (FIG. 8 and FIG. In FIG. 9, a person is omitted) is lifted upward to create an exchange space 28 between the mattress 12 and the support frame 6 (plurality of lifting members 26).

Next, the take-up handle 64 is rotated in the take-up direction. When thus rotated, the dirty sheets 32C on the mattress 12 are wound on the take-up roll 60, and along with this take-up, new sheets 32C are sent out from the delivery roll 54, and this take-up operation is performed on the new sheets 32C. Covers the entire upper surface of the mattress 12.

After that, as shown in FIG. 8, the cylinder mechanism (not shown) of the elevating drive mechanism is contracted, the support frame body 6 is moved downward to be positioned at the descending position, and the plurality of lifting members 26 of the support frame body 6 are moved. A person who is housed in the storage slit 14 of the mattress 12 together with a part of the sheets 32C and lifted upward by the support frame 6 (plurality of lifting members 26) is returned to the mattress 12 in this way, and thus the sheets. The 32C can be replaced with a new one.

In this second embodiment, the sheet sending portion 46 is arranged on the head side of the bed body 4C, and the sheet winding portion 48 is arranged on the foot side of the bed body 4C in the longitudinal direction of the bed body 4C. On the contrary, the sheet winding portion 48 may be arranged on the head side of the bed body 4C, and the sheet sending portion 46 may be arranged on the foot side of the bed body 4C. Alternatively, instead of such a configuration, the sheet delivery portion 46 may be arranged on one side in the lateral direction of the bed body 4C, and the sheet winding portion 48 may be arranged on the other side in the lateral direction of the bed body 4C. Good.

Further, in the second embodiment, the take-up handle 64 is connected to the sheet take-up roll 60, and the take-up handle 64 is operated to take up the sheets 32C. However, instead of the take-up handle 64. , A take-up drive source (not shown) such as a take-up motor may be provided, and the take-up roll 60 may be rotated in the take-up direction by utilizing the drive force of the take-up drive source.

<Third embodiment of the bed>
Next, a third embodiment of the bed according to the present invention will be described with reference to FIG. In this third embodiment, the support frame is improved.

In FIG. 10, in the bed 2D of the third embodiment, the elevating members 72 and 74 are movably supported by the support legs 10b and 10c on one side in the lateral direction of the bed body 4D, and the elevating members 72 and 74 of the pair of elevating members 72 and 74. An elevating support member 76 on one side is fixed between the upper ends. Further, the elevating members 78 and 80 are movably supported by the support legs 10a and 10d on the other side in the lateral direction of the bed body 4D, and the elevating support members 82 on the other side are provided between the upper ends of the pair of elevating members 78 and 80. It is fixed.

The pair of elevating support members 76, 82 extend in the longitudinal direction of the bed body 4D, and a plurality of lifting members 26 are spaced between the elevating support members 76, 82 in the longitudinal direction, as in the first embodiment. Is provided. As the elevating drive mechanism (not shown), for example, a cylinder mechanism can be used as in the first embodiment, and the cylinder mechanism is built in each support leg portion 10 (10a to 10d) of the bed body 4D. , The output units of these cylinder mechanisms are connected to the elevating members 72, 74, 78, 80. Other configurations of this third embodiment may be the same as those of the first embodiment described above. Also in the bed 4D of this third embodiment, the same effects as those of the above-mentioned first embodiment can be achieved.

<Fourth embodiment of the bed>
Next, a fourth embodiment of the bed according to the present invention will be described with reference to FIGS. 11 and 12. In this fourth embodiment, the bed body and the sheets are improved. In FIG. 11, the sheets are omitted.

In FIGS. 11 and 12, in the bed 2E of the fourth embodiment, support legs 10 (10a to 10d) are provided at the four corners of the bed body 4E, and the support legs 10 (10a to 10d) are provided. The elevating portion 22 (only one is shown in FIG. 11) of the support frame body 6 is supported so as to be able to move up and down, and the configuration of the bed body 4E and the support frame body 6 is the same as that of the first embodiment described above.

In the fourth embodiment, the headboard 92 is arranged on the head side of the bed body 4E, and the headboard 92 is attached to the head side end surface of the bed floor 8E and is above the bed floor 8E. Extends to. Further, a plurality of fixed mounting means 94 are attached to both side surfaces and foot side end faces of the bed floor portion 8E at intervals, and these fixed mounting means 94 are composed of, for example, a hook member having a hook portion or the like. be able to.

In connection with these fixing mounting means 94, a plurality of sheet fixing means 96 are provided on the sheet 32E side, and these sheet fixing members 96 are formed of, for example, a stretchable rubber material, and are fixed on the bed floor portion 8E side. It is formed from, for example, a U-shaped member or a ring-shaped member that can be locked to the mounting means 94.

In this embodiment, the sheets 32E have a main body portion 98 covering the upper surface of the mattress 12, side surface portions 100 and 101 covering the side surfaces of the mattress 12, and end surface portions 103 covering the foot side end surfaces of the mattress 12, and these side surface portions 100. , 101 and the lower end of the end face 103 are provided with a sheet fixing member 96 corresponding to the fixing mounting means 94 on the bed body 4E side.

In such a bed 2E, the sheet fixing means 96 (U-shaped member or ring-shaped member) on the sheet 32E side is attached to the mounting fixing means 94 (for example, hook member) on the bed body 4E side, and is attached in this way. As a result, the movement of the sheets 32E laid on the mattress 12 can be suppressed.

A hook-and-loop fastener (not shown) or the like may be used as the mounting fixing member 94. In this case, for example, a male (or female) hook-and-loop fastener is attached to the mattress 12 or the bed floor portion 8E to cope with this. Then, a female (or male) hook-and-loop fastener is attached to the sheet 32E side.

Further, in the fourth embodiment, the sheet fixing member 96 is provided at the three side ends of the sheets 32E, but the sheet fixing member 96 may be provided at all of the four side ends. The movement of the sheets 32E can be suppressed by providing the sheet fixing member 96 at least at least opposite opposite ends (that is, at least two opposing ends) of the sheets 32E and fixing them to the bed body 4E side.

In this fourth embodiment, a ring-shaped member is used as the sheet fixing member 96, but the present invention is not limited to such a member, and for example, a rod-shaped member (not shown) may be used. In this case, on both sides of the sheets 32E, insertion portions (not shown) extending in the longitudinal direction by sewing the side ends thereof in a tubular shape are provided, and rod-shaped members are inserted into these insertion portions, and the rod-shaped members are inserted into the bed. It may be fixed to the bed floor 8 (or mattress 12) of the main body 4E.

When such a sheet 32E is used, when removing the sheet 32E from the bed body 4E (mattress 12), the sheet 32E may be wound around a rod-shaped member (not shown) on one side, and the removal becomes easy. .. Further, when carrying the sheets 32E, the sheets 32E are wound around the rod-shaped member, which facilitates handling. In addition, when laying the sheets 32E on the bed body 4E (mattress 12), it is sufficient to rewind and spread it on the mattress 12, which makes it easy to lay.

<Fifth embodiment of the bed>
Next, a fifth embodiment of the bed according to the present invention will be described with reference to FIGS. 13 to 15. In this fifth embodiment, both the bed body and the lift mechanism have been improved.

In FIG. 13, in the bed 2F of the fifth embodiment, the support legs 102 (102a to 102d) are arranged on the square portion of the bed body 4F, and the lower end side of the support legs 102 (102a to 102d) is the bed. It extends downward from the floor portion 8F, and the lower end side of these support leg portions 102 (102a to 102d) is installed on the floor surface. Further, the upper end side of the support leg portions 102 (102a to 102d) extends upward, and the upper end portions of the pair of support leg portions 102a and 102b on the head side of the bed body 4F are connected by one upper connecting member 104, and the legs thereof. The upper ends of the pair of supporting legs 102c and 102d on the side are connected to the other upper connecting member 106. In FIG. 13, the mattress is omitted.

In the fifth embodiment, the support shafts 108 (108a to 108d) are rotatably supported in the support legs 102 (102a to 102d) of the bed body 4F. With reference to FIG. 15, an upper end wall 110 is attached to the upper end of the support leg 102 (102a to 102d), and one end side of the support shaft 108 (108a to 108d) is attached to the upper end wall 110 via the bearing 112. The shaft portion 114 is rotatably supported. Further, although not shown, a lower end wall is attached to the lower end portion of the support leg portion 102 (102a to 102d), and the other end side shaft portion of the support shaft 108 (108a to 108d) is attached to the lower end wall via a bearing. Is rotatably supported.

A worm gear portion 116 (116a to 116d) is provided on the outer peripheral surface of the support shaft 108 (108a to 108d), and a slit opening is provided on one side surface of each support leg portion 102 (102a to 102d) corresponding to the worm gear portion 116. 118 (118a to 118d) are provided, and these slit openings 118 (118a to 118d) extend in the axial direction of the support leg portions 102 (102a to 102d). In this embodiment, the pair of support legs 102b, 102c on one side of the bed body 4F are provided with slit openings 118b, 118c on the side surfaces facing each other, and the pair of support legs 102a, 102d on the other side are provided with slit openings 118b, 118c. Is provided with slit openings 118a and 118d on the side surfaces facing each other.

In this fifth embodiment, the lift mechanism 120 includes a pair of elevating support members 122, 124. One elevating support member 122 is arranged on one side of the bed body 4F and is rotatably supported between the pair of support legs 102b and 102c, and the other elevating support member 124 is located on the other side of the bed body 4F. It is arranged and is movably supported between the pair of support legs 102a and 102d. One end of the elevating support member 122 is supported by engaging with the worm gear portion 116b of the support shaft 108b through the slit opening 118b of the support leg portion 102b, and the other end is supported by the worm gear of the support shaft 108c through the slit opening 118c of the support leg portion 102c. It meshes with and is supported by the portion 116c. Further, one end of the other elevating support member 124 is supported by engaging with the worm gear portion 116a of the support shaft 108a through the slit opening 118a of the support leg portion 102a, and the other end portion is supported through the slit opening 118d of the support leg portion 102d. It is supported by meshing with the worm gear portion 116d of the above.

A plurality of lifting members 26 are stretched between the pair of elevating support members 122 and 124, as in the third embodiment shown in FIG. 10, and the lifting members 26 are elevated together with the pair of elevating support members 122 and 124. Be moved.

In this fifth embodiment, the elevating drive mechanism 126 of the lift mechanism 120 is configured as shown in FIG. 14 and is provided on the back side of the bed body 4F. Primarily with reference to FIG. 14, the illustrated elevating drive mechanism 126 comprises a drive transmission mechanism 130 for transmitting the operation of the elevating handle 128 to the support shafts 108a to 108d of the four support legs 102a to 192d. The driving force from 128 is configured to be simultaneously transmitted to the support shafts 108a to 108d via the drive transmission mechanism 130.

The illustrated drive transmission mechanism 130 includes a drive connecting shaft 132 (132a to 132d) provided corresponding to the support shaft 108 (108a to 108d), and one end side of the drive connecting shaft 132 (132a to 132d) is a support shaft 108. It is drive-connected to (108a to 108d) via, for example, a bevel gear mechanism (not shown), and the other end side is drive-connected to a drive joint mechanism (not shown) built in the connection box 134. An operation shaft 136 extending from the operation handle 128 is drive-connected to the drive joint mechanism of the connection box 134.

Since it is configured in this way, when the operation handle 128 is rotated in the ascending direction (or descending direction), the driving force from the operating handle 128 is applied to the driving joint of the operating shaft 136 and the connecting box 134 (not shown). Is transmitted to the four drive connecting shafts 132a to 132d via the drive joint. Then, the driving force from the operation handle 128 is transmitted to the support shafts 108a to 108d of the support legs 102a to 102d via the drive transmission shafts 132a to 132d.

When the support shafts 108a to 108d are simultaneously rotated in the ascending direction (or descending direction) by the operation handle 128, the elevating support member 122 is provided on one side of the bed body 4F by the worm gear portions 116b, 116c of the support shafts 108b, 108c. Is raised (or lowered), and on the other side, the other elevating support member 124 is raised (or lowered) by the worm gear portions 116a, 116d of the support shafts 108a, 108d, and the pair of elevating support members 122, 124 are raised. It can be positioned in the ascending position (or descending position), and the same effect as described above can be achieved even in such a bed 4F.

In the fifth embodiment described above, the operation handle 128 is rotated to manually move the elevating support members 122 and 124 (lifting members 26 stretched between them), but the operation handle Instead of 128, a drive source such as an electric motor is used, and the drive force from the drive source is transmitted to the support shafts 108a to 108d of the support legs 102a to 102d to automatically move the elevating support members 122 and 124 up and down. You can also do it.

Further, in the fifth embodiment, the drive force from the operation handle 128 is transmitted to the support shafts 108a to 108d of the support legs 102a to 102d by using the drive transmission mechanism 130. Such a drive transmission mechanism 130 is omitted, drive sources (for example, electric motors) are arranged on the support shafts 108a to 108d, these drive sources are operated synchronously, and the support shafts 108a to 108d are simultaneously moved in the ascending direction (or descending direction). It may be rotated. Alternatively, the support shafts 108a to 108d are rotated by using a fluid pressure pump such as an air pump or a hydraulic pump without using the operation handle 128 or the like, and the support shafts 108a to 108d are rotated by using the fluid pressure such as the air pressure and the hydraulic pressure. The 124 may be moved up and down.

Although various embodiments of the bed according to the present invention have been described above, the present invention is not limited to these embodiments, and various modifications or modifications can be made without departing from the scope of the present invention.

For example, in all of the above-described embodiments, a lifting support member (a plurality of lifting members provided therein) is moved up and down with respect to the bed floor portion (in other words, a mattress) of the bed body to lift a person. Instead of lifting the person, the same effect can be achieved by lowering the bed floor (mattress) while holding the person instead of such a configuration. In this case, although not shown in the drawing, it can be configured as follows, for example.

In connection with the bed body installed on the floor, a body support mechanism is provided to support the person lying on the sheets laid on the mattress, and the body support mechanism is installed (or on, for example, on the floor). It can be attached to the fixed part of the bed body). This body support mechanism includes, for example, a pair of body support members arranged on both sides of the bed body and a plurality of body support members provided at intervals between the pair of body support members, and the pair of bodies. The support member is fixedly installed on the floor (or fixedly attached to the fixed part of the bed body).

Further, the bed floor is movably supported with respect to the bed body, and the bed is movably configured between a normal position in which the body is supported by a mattress and a descending position lowered from the normal position. In connection with the bed floor portion, an elevating drive mechanism for elevating and lowering the bed floor portion is provided, and as the elevating drive mechanism, for example, the cylinder mechanism described above can be used. Therefore, when the cylinder mechanism is extended, the bed floor is raised with respect to the bed body and held in the above-mentioned normal position, and when the cylinder mechanism is contracted, the bed floor is lowered with respect to the bed body to the lowered position. It is positioned in.

Further, the mattress is provided with storage slits corresponding to a plurality of body support members of the body support mechanism as in the above-described embodiment, and the sheets covering the mattress are the mattress and the body support mechanism as described above. It is laid between multiple body support members.

In this variant, substantially similar to the embodiments described above, when the bed floor is in the normal position, the plurality of body support members of the body support mechanism and some of the sheets covering the mattress correspond to the mattress. It is housed in a storage slit, and the body support member does not act on the body of the person lying down, and can sleep sideways without discomfort.

Further, when the bed floor is moved to the descending position as described above, the plurality of body support members of the body support mechanism are separated from the storage slit of the mattress to support the person lying on the mattress, and in such a supported state. , A sheet exchange space is generated between the bed floor and the plurality of body support members of the body support mechanism, and therefore, the sheets can be easily exchanged by using this sheet exchange space.

Further, in each of the above-described embodiments, a plurality of lifting members are moved up and down in a parallel state, but when moving up and down, they are slightly tilted, that is, the head side is lifted slightly upward. It may be maintained in such an inclined state and moved up and down in such an inclined state. In this case, since the head is held slightly above, the fear of lifting can be alleviated, and the sheets act to be progressively advanced and replaced when the plurality of lifting members are lowered. You can lay the sheets neatly.

2,2C, 2D, 2E, 2F Bed 4,4C, 4D, 4E, 4F Bed body 6 Support frame 10 (10a-10d), 102 (102a-102d) Support leg 12 Mattress 14 Storage slit 18,20 Lift Support part 22 (22a to 22d) Lifting part 26, 26A, 26B Lifting member 28 Exchange space 32, 32C, 32E Sheet 46 Sheet sending part 48 Sheet winding part 76, 82, 22, 124 Lifting support member 108 (108a to 108d) Support shaft 120 Wrist mechanism 126 Lifting drive mechanism P person

Claims (9)

A bed body (4) installed on the floor, a mattress (12) placed on the bed floor (8) of the bed body (4), and sheets (32) laid on the mattress (12). In a bed equipped with a lift mechanism (24) for lifting a person lying on the bed.
The lift mechanism (24) is provided at intervals between the pair of elevating support members (18, 20) arranged on both sides of the bed body and the pair of elevating support members (18, 20). Lifting drive mechanism for moving the plurality of lifting members (26) and the pair of lifting support members (18, 20) up and down between the lower lowering position and the upper raising position of the bed body (4). The mattress (12) is provided with a storage slit (14) corresponding to the plurality of lifting members (26) of the lift mechanism (24), and the sheets (32) are provided with the mattress (32). 12) and the plurality of lifting members (26) of the lift mechanism (24) are laid.
When the pair of elevating support members (18, 20) are located in the descending position, a part of the plurality of lifting members (26) and the sheets (32) of the lift mechanism (24) is the mattress (12). ) Is accommodated in the corresponding storage slit (14), and when the pair of elevating support members (18, 20) move to the ascending position, the plurality of lifting members (26) of the lift mechanism (24) are moved. A bed characterized in that a person who is separated from the storage slit (14) of the mattress (12) and lies on the mattress (12) is lifted upward. The plurality of lifting members (26) are configured to change into a first state narrow in the width direction and a second state expanding in the width direction, and are housed in the storage slit (14) of the bed body (4). The bed according to claim 1, wherein the bed is configured to be in the first state at times and in the second state when it is removed from the storage slit (14). A sheet changing device (51) is provided in connection with the bed body (4C), and the sheet changing device (51) includes a sheet sending unit (46) for sending out the sheets (32C) and the sheets (32C). The sheets (32C) sent out from the sheet sending section (46) are the surfaces of the bed floor portion (8C) of the bed body (4C)). The bed according to claim 1 or 2, wherein the bed is wound around the sheet winding portion (46) through the side. The sheet delivery portion (46) of the sheet changing device (51) is arranged on one side of the bed floor portion (8C) in the longitudinal direction or the lateral direction of the bed body (4C), and the sheets winding. The bed according to claim 3, wherein the portion (48) is arranged on the other side of the bed floor portion (8C) in the longitudinal direction or the lateral direction of the bed body (4C). A plurality of sheet fixing means (96) are provided at opposite ends of the sheets (32E) at intervals, and are provided on the bed floor (8E) or the mattress (12) of the bed body (4E). Is provided with fixed mounting means (94) corresponding to the plurality of sheet fixing means (96), and the plurality of sheet fixing means (96) on the sheets (32E) side is the bed floor portion (8E) or The bed according to claim 1 or 2, wherein the bed is attached to the fixed attachment means (94) on the mattress (12) side. The bed body (4D) includes support legs (10a, 10b, 10c, 10d) provided at the four corners of the bed floor (8), and the support legs (10a, 10b, 10c, 10d). ) Is supported by the elevating member (72, 74, 78, 80) so as to be movable up and down, and a pair of elevating members on one side supported by the support leg portion (10b, 10c) on one side of the bed floor portion (8). One elevating support member (76) is supported between (72, 74), and a pair of elevating / lowering support members (76) on the other side are supported by the support legs (10a, 10d) on the other side of the bed floor (4D). The bed according to any one of claims 1 to 5, wherein the other elevating support member (82) is supported between the members (78, 80). The bed body (4) includes support legs (10a, 10b, 10c, 10d) provided at four corners of the bed floor (8), and the pair of elevating support members are the bed floor. It is a pair of elevating support portions (18, 20) in the support frame body (6) that is moved up and down with respect to (8), and elevating portions (22a, 22b, 22c) are formed on the four corner portions of the support frame body (6). , 22d) is provided, and the elevating portion (22a, 22b, 22c, 22d) of the support frame body (6) elevates and elevates to the support leg portion (10a, 10b, 10c, 10d) of the bed body (4). The bed according to any one of claims 1 to 5, characterized in that it is movably supported. The bed body (4F) includes support legs (102a, 102b, 102c, 102d) provided at four corners of the bed floor (8F), and the support legs (102a, 102b, 102c, 102d). A support shaft (108a, 108b, 108c, 108d) having a worm gear portion (116a, 116b, 116c, 116d) on the outer peripheral surface is rotatably supported, and the support leg portion on one side of the bed floor portion (8F) is supported. One elevating support member (122) is meshed between the worm gear portions (116b, 116c) of the pair of support shafts (108b, 108c) on one side supported by (102b, 102c), and the bed floor portion (8F). The other elevating support member (124) is meshed between the worm gear portions (116a, 116d) of the pair of support shafts (108a, 108d) on the other side supported by the support leg portions (102a, 102d) on the other side. The bed according to any one of claims 1 to 5, characterized in that the bed is provided. It is provided with a bed body installed on the floor surface, a mattress placed on the bed floor of the bed body, and a body support mechanism for supporting a person lying on the sheets laid on the mattress. And
The body support mechanism includes a pair of body support members arranged on both sides of the bed body, and a plurality of body support members provided at intervals between the pair of body support members.
The bed floor is configured to be able to move up and down between a normal position in which the body is supported by the mattress and a lowering position lowered from the normal position, and the bed floor is moved up and down in relation to the bed floor. An elevating drive mechanism is provided to allow the vehicle to move.
Further, the mattress is provided with storage slits corresponding to the plurality of body support members of the body support mechanism, and the sheets are provided between the mattress and the plurality of body support members of the body support mechanism. Lay out,
When the bed floor is located in the normal position, the plurality of body support members of the body support mechanism and a part of the sheets are housed in the corresponding storage slits of the mattress, and the bed floor is When moved to the lowered position, the plurality of body support members of the body support mechanism are separated from the storage slit of the mattress to support a person lying on the mattress.

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