JP2013027535A - Mattress - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mattress with a novel structure, capable of efficiently recombining a part of the mattress, and excellent in the maintainability and handleability.SOLUTION: The mattress 10 includes a plurality of mattress units 20a and 20b, each of which includes: a base member extending in the lateral direction of a body support surface 14; connection parts 28a and 28b provided respectively on both ends in the longitudinal direction of the base member; and a cushion body 30a attached to the intermediate portion in the longitudinal direction of the base member 26. The mattress units 20a and 20b are aligned and disposed in the longitudinal direction of the body support surface 14, and detachably connected to each other by connection means 106 and 108 provided in the connection parts 28a and 28b respectively.

Description

  The present invention relates to a mattress used by being disposed on a support surface of a human body such as a bed or a bed.

  Conventionally, a mattress having a cushioning action has been adopted for a support portion of a human body in a nursing bed or the like, and the sleep comfort has been improved by elastically supporting the human body. As the mattress, for example, a so-called stationary type formed of an elastic material such as urethane foam is mainly used.

  By the way, when a user who is difficult to turn over uses a general mattress continuously over a long period of time, the reaction force of body pressure (pressure due to the load of the human body) is continuously applied locally to the user. Since it acts, pressure ulcers due to deterioration of blood flow and the like may occur. Therefore, in order to prevent the occurrence of pressure ulcers, it is possible to disperse the reaction force of body pressure acting on the user by changing the position of the body pressure of the user using the pressure of the fluid. Mattresses have been proposed. For example, in Japanese Patent Laid-Open No. 2000-189472 (Patent Document 1), a load sensor sheet is disposed inside a mattress, while a body pressure acting surface (supporting portion of a human body) supporting a human body is provided with a plurality of cells. A so-called pressure-switching type mattress structure is disclosed in which the internal pressure of the cell can be adjusted by feeding / extracting fluid such as air from / to the fluid chamber of each cell. In such a pressure-switching type mattress, the fluid in the cell where the high load pressure is measured is discharged, while the fluid is sent into the cell where the low load pressure is measured, so that the internal pressure of the cell is periodically increased. By changing, the body part of the user is prevented from being compressed for a long time by the action of body pressure.

  However, in such a pressure-switching mattress having a conventional structure, a fluid conduit for supplying and discharging fluid from the pump is connected to the fluid chamber of each cell, or the fluid chamber of each cell is connected. It is necessary to provide an electromagnetic valve or the like for communicating / blocking the fluid conduit for each cell. Here, it is conceivable that the fluid conduits extending from each cell are accommodated in a space under the bed or the like, but the fluid conduits are connected over a relatively long distance from each cell to a connecting tube such as a manifold or a pump. There is a possibility that the fluid conduits may be interlaced with each other, or the fluid conduit may be damaged due to interference with other members when the bed is movable. In addition, even when a failure occurs in any one of the cells, it is difficult to specify which of the plurality of fluid pipes is a pipe connected to the cell in question, resulting in poor maintenance.

  Furthermore, when a solenoid valve is provided at the fluid inlet / outlet of each cell, it is necessary to electrically connect an external control device and each solenoid valve, and it is more difficult to arrange a large number of wires in a narrow space. Therefore, the maintenance performance was also poor when a malfunction occurred in the solenoid valve. Such a problem has become more prominent when the size of the cell is reduced in order to provide a better feeling of use and comfort.

  In addition, the occurrence site of pressure sores varies depending on the conditions such as the sex, physique, and age of the user, the type of disease, and the progression state. For example, Japanese Unexamined Patent Application Publication No. 2007-222672 (Patent Document 2) proposes a mattress composed of a plurality of air cells that can easily change the size and arrangement of the air cells according to the body shape and diseased part of the user. However, in the mattress described in Patent Document 2, it is necessary to replace the air cells one by one, which is inferior to frequent recombination and maintenance. Further, in the mattress structure described in Patent Document 2, in order to be able to individually adjust the internal pressure of each air cell, it is necessary to incorporate a switching valve such as an electromagnetic valve directly under each air cell. It was complicated and inferior in handling.

JP 2000-189472 A JP 2007-222672 A

  The present invention has been made in the background of the above-mentioned circumstances, and its solution is a novel structure in which part of the mattress can be efficiently recombined and is excellent in maintenance and handling. Is to provide a mattress.

  According to a first aspect of the present invention, there is provided a mattress disposed and used on a support surface of a human body, the base member extending in the width direction of the support surface, and at least one of both longitudinal ends of the base member. A plurality of mattress units each including a connecting portion provided and a cushion provided in at least an intermediate portion in the longitudinal direction of the base member, and the plurality of mattress units are provided with a length of the support surface. It is characterized by being arranged in the vertical direction and detachably connected to each other by connecting means provided in each of the connecting portions.

  According to the mattress having the structure according to the first aspect as described above, the mattress units extending in the width direction of the support surface are set as one unit, the mattress units are aligned and arranged in the length direction by the connecting means at the connecting portion. A mattress can be configured by detachably connecting to each other. Therefore, when a problem occurs in a specific mattress unit, the mattress unit can be easily maintained or replaced by removing the mattress unit connecting portion from the connecting portion of the adjacent mattress unit.

  In addition, since the connecting portion that is detachably connected by the connecting means is provided at at least one end of the both longitudinal ends of the base member extending in the width direction of the support surface such as the bed, Can be recombined and is excellent in operability and handling during maintenance. Furthermore, since the mattress has a structure that is divided for each mattress unit extending in the width direction, it is possible to replace only the mattress unit in which a problem has occurred, which is excellent in economy. In addition, although the connection part should just be provided in at least one of the longitudinal direction both ends of a base member, the assembly stability of a mattress unit can be improved by providing in both sides.

  Furthermore, when the cushion body is configured using a cell having a fluid chamber whose pressure can be switched inside, a fluid conduit connected to the cell, a switching valve such as an electromagnetic valve, an electric wire connected to the switching valve, etc. Can be accommodated and arranged in each mattress unit in a lump, and the handleability and maintainability of the pressure switching type cushion body can be advantageously improved.

  According to a second aspect of the present invention, in the mattress described in the first aspect, the plurality of mattress units are selected by a mattress unit arbitrarily selected from a plurality of types of the mattress units having different configurations of the cushion body. On the other hand, the plurality of types of mattress units are pressure-switchable mattresses configured with a plurality of cells whose height can be changed by adjusting the pressure of a fluid chamber in which the cushion body is provided. The mattress according to claim 1, comprising a unit and a stationary mattress unit in which the cushion body is formed of an elastic body.

  According to this aspect, since a plurality of types of mattress units having different configurations of the cushion body are prepared in advance, the mattress units can be combined according to the body shape and symptoms of the user. For example, a portion that does not require a high-grade mattress such as a pressure-switching type may be configured with a static mattress unit, and a portion that may cause pressure ulcers may be configured with a pressure-switching mattress unit. This makes it possible to apply an expensive pressure-switching mattress unit to only the minimum necessary parts, and to provide a pressure-switching cushion body effective for preventing the occurrence of pressure sores at a relatively low cost. Further, it is also included in this embodiment that the mattresses are all constituted by pressure switching type mattress units or all the mattresses are constituted by static type mattress units.

  The pressure switching type mattress unit may be a pneumatic type or a hydraulic type. Also, in the pressure switching mattress unit, a plurality of types of pressure switching mattress units having different cell shapes can be configured. This makes it possible to select a cushion body that further matches the body shape and symptoms of the user. Similarly, in the static mattress unit, a known elastic body such as foamed polyurethane or a spring can be adopted, and a plurality of types of static mattress units with different types of elastic bodies can be configured.

  According to a third aspect of the present invention, in the mattress described in the second aspect, in the pressure switching type mattress unit, the connection portion includes a connection block having a hollow box shape, and the connection block A fluid line that communicates the cell with an external pump device, a valve unit that includes a plurality of switching valves that connect / block each cell to the fluid line, and controls the driving of the switching valve The control unit to be accommodated is accommodated.

  According to this aspect, a valve unit including a fluid conduit connected to each cell and a switching valve, which has been a problem when the cushion body is configured using a cell having a fluid chamber in which pressure can be switched, is provided. And the control unit thereof can be accommodated and arranged in the connecting block of the connecting portion in a lump. Thereby, the handleability and maintainability of the pressure switching type mattress unit can be further advantageously improved. In addition, since the valve unit is accommodated in the connection block, it is possible to reduce the operation noise of the switching valve.

  According to a fourth aspect of the present invention, in the mattress described in the third aspect, the valve unit is supported and fixed to the connection block of the connection body via a sound absorbing material. Thereby, it is possible to prevent the vibration of the switching valve from being transmitted to the connection block, and to achieve further noise reduction of the pressure switching mattress unit.

  According to a fifth aspect of the present invention, there is provided the mattress described in the second aspect, wherein in the static mattress unit, the connecting portion includes a connecting box having a hollow box shape, and the connecting block The fluid conduit and the conductive path are accommodated in the interior of the housing.

  According to this aspect, when the stationary mattress unit is interposed and arranged between the pressure switching mattress units, the fluid conduit and the conductive path accommodated in the connecting portion of the stationary mattress unit are arranged. The fluid conduits accommodated in the connecting portions of the pressure-switching mattress units on both sides can communicate with the valve unit and the control unit. As a result, the pressure switchable mattress and the stationary mattress can be freely arranged without hindering the function of the pressure switchable mattress unit.

  According to a sixth aspect of the present invention, in the mattress described in any one of the third to fifth aspects, the connection blocks of the connection portions are opposed to each other in the alignment direction of the plurality of unit cells. One of the pair of opposing walls is provided with an input connector connected to the input port of the flow conduit and the control unit or the conductive path, while the other of the pair of opposing walls Is provided with an output connector connected to the output port of the fluid conduit and the control unit or the conductive path, and one output port of the connecting block adjacent in the alignment direction of the mattress unit is connected to the other output port. By sequentially connecting to the input port by a connecting pipe, each cell can communicate with the pump device, while the one output connector and the other input connector are sequentially connected to each other. By connecting the power supply and control signals from the external control device to each said control unit of said connection blocks are those can be supplied.

  According to this aspect, by sequentially connecting the connectors and ports provided in the connecting portions of adjacent mattress units, the fluid conduits, control units, and conductive paths accommodated in the connecting blocks of the connecting portions are used. The power supply system and the pipeline system of the entire system can be configured. Thereby, it becomes possible to collect piping and power distribution necessary for driving the pressure switching mattress unit in a very compact manner in the connecting portion. Therefore, it is easy to replace each mattress unit including piping and power distribution by simply connecting / disconnecting the connector and port provided at the connecting part, and a split mattress that realizes high handling and maintenance. Can be provided.

  According to a seventh aspect of the present invention, in the mattress described in the sixth aspect, a recess is formed in at least one of the pair of opposing walls of the connection block of each of the connection portions, and the inside of the recess The input / output port and the input / output connector, and the connecting pipe and the electric wire attached thereto are accommodated.

  According to this aspect, in the recess provided in the opposing wall of the connecting portion of the adjacent mattress unit, the connector and the port and the connecting pipe and the electric wire protruding from the opposing wall are accommodated. When the mattress units are arranged so that the adjacent connecting portions are detachably connected to each other, they are all housed in the recess without protruding from the outer surface of the connecting portion of the connecting portion. This prevents the connector, port, connecting pipe and electric wire from protruding outside when using the mattress of this aspect, and the user or caregiver hits the port or connector, resulting in injury or accidental connection. It is possible to prevent problems such as removing cables and wires. Further, it is possible to prevent disconnection of the connecting pipe and the electric wire from the port and the connector, and to secure the connection stability thereof.

  According to an eighth aspect of the present invention, in the mattress described in any one of the first to seventh aspects, the connection means provided in the connection portion of the plurality of mattress units are arranged in the width direction. A plurality of connecting strips arranged in the longitudinal direction of the plurality of connecting strips extending vertically between the connecting portions adjacent in the alignment direction, and at least Both end portions of one of the connecting strips are attached to the upper surface of one of the connecting portions adjacent in the alignment direction and the lower surface of the other connecting portion, and both end portions of the other connecting strip are , And are attached to the lower surface of the one connecting member and the upper surface of the other connecting member.

  According to this aspect, the connecting portions are connected to each other so as to be tiltable with a simple structure using a plurality of connecting strips, and the mattress is tilted to form a concave deformation (bending that is concave upward). ) And convex deformation (bending convex upward). That is, in the concave deformed portion of the mattress, the tilting axis is set so as to extend in the width direction between the upper ends of the adjacent connecting portions, and the adjacent connecting portions and the cushion body are tilted around the tilting axis, It can cope with the concave deformation of the mattress. On the other hand, in the convex deformed portion of the mattress, the tilting axis is set so as to extend in the width direction between the lower ends of the adjacent connecting portions, and the adjacent connecting portions and the cushion body are tilted around the tilting axis. It can cope with the convex deformation of the mattress. Therefore, using a single structure in which adjacent connecting portions are connected by a plurality of connecting strips, different bending modes for each bed model (concave deformation at the back-up portion, convex deformation at the knee support portion, etc. ), It is not necessary to change the bending position and bending direction according to the bed model.

  In addition, while the deformation | transformation in the length direction of a connection strip | belt-shaped body is restrict | limited, the deformation | transformation (bending) in the thickness direction of a connection strip | belt-shaped body is accept | permitted, and adjacent connection parts are positioned mutually. While being held in a connected state, relative tilting is easily permitted. Therefore, it is desirable that the connecting band-like body has a small expansion / contraction deformation (distortion) in the length direction and can easily allow deformation (bending) in the thickness direction. Further, the connecting band-like body functions as a connecting means in the concave deformed portion of the mattress.

  According to a ninth aspect of the present invention, in the mattress described in the eighth aspect, both end portions of the connecting band-like body are detachably attached to the connecting portion with surface fasteners.

  According to this aspect, since the connecting strip can be freely attached to and detached from the connecting portion, the connecting strip, the connecting portion, the cushion body, the base member can be easily replaced by removing the connecting strip from the connecting portion. It can be carried out. Moreover, the hook-and-loop fastener can be easily removed by applying a force in the direction perpendicular to the plane, but it is difficult to remove even if a force in the plane direction is applied. It is hard to come off with the applied force, and the connecting portion is stably held in the connected state. In short, the use of hook-and-loop fasteners as attachment means for the connecting portion of the connecting band-like body allows the direction of the force exerted when the connecting band-like body is attached to and detached from the connecting portion, and the connection band-like body and the connecting portion when the mattress is bent. The direction of the force acting between them is different from each other, and both stability in use and easy attachment / detachment during maintenance are realized.

  According to the present invention, the mattress unit extending in the width direction of the support surface of the bed or the like is used as a unit, and a plurality of the mattress units are aligned and arranged in the length direction so that they can be detachably connected to each other by the connecting means at the connecting portion. By doing so, a mattress can be configured. Therefore, when a problem occurs in a specific mattress unit, the mattress unit can be easily removed by releasing the connection of the mattress unit, and the mattress can be easily maintained and replaced. In addition, since the connecting portion that is detachably connected by the connecting means is provided at at least one end in the width direction of the support surface such as the bed, recombination work is possible from the side of the bed and the like during maintenance. Excellent operability and handling.

The top view which shows the mattress as the 1st Embodiment of this invention. II-II sectional drawing of FIG. III-III sectional drawing of FIG. The longitudinal cross-sectional view which expands and shows a cell in the pressure switching type mattress unit which comprises the mattress shown in FIG. Explanatory drawing of the system configuration | structure of the mattress shown by FIG. VI-VI sectional drawing of FIG. The conceptual diagram for demonstrating the connection state of the connection block which comprises the mattress shown by FIG. The perspective view which shows some of the connection blocks which comprise the mattress shown in FIG. 1 typically. The right view of the connection block shown by FIG. The perspective view for demonstrating the relative tilting of the connection block shown by FIG. The right view for demonstrating the concave-shaped deformation | transformation by tilting of the connection block shown by FIG. The right view for demonstrating the convex-shaped deformation | transformation by tilting of the connection block shown by FIG.

  Embodiments of the present invention will be described below with reference to the drawings.

  1 and 2 show a mattress 10 as a first embodiment of the present invention. In the mattress 10, a pressure-switching mattress unit 20a serving as a mattress unit is stationary between a head-side block 16 and a leg-side block 18 disposed at both ends in the length direction of the human body support surface 14 of the bed 12. A plurality of mold mattress units 20b are arranged in the longitudinal direction of the human body support surface 14, and a surface layer mat 22 and a body pressure sensor 24 extending over the entire surface of the mattress units 20a and 20b are placed thereon. (See FIG. 2). In the following description, in principle, the width direction is the left-right direction in FIG. 1, the length direction is the up-down direction in FIG. 1, and the height direction is the up-down direction in FIG. Say each. Further, in FIG. 1, the surface layer mat 22 and the body pressure sensor 24 are not shown in order to make it easy to see the arrangement of connecting blocks 28a, 28b and cells 36, which will be described later, and the pressure switching mattress unit 20a has a ceiling, which will be described later. The illustration of the part cushion layer 34 is omitted.

  The head-side block 16 and the leg-side block 18 have substantially the same rectangular parallelepiped shape and extend in the width direction, and are formed of an elastic body such as urethane foam. The head-side block 16 and the leg-side block 18 are disposed at one end in the length direction of the human body support surface 14 of the bed 12, and are disposed at a predetermined distance in the length direction. Yes.

  A plurality of mattress units 20 a and 20 b are disposed between the head-side block 16 and the leg-side block 18. The mattress units 20a and 20b have the same basic structure. That is, the mattress units 20a and 20b include a base member 26 extending in the width direction of the human body support surface 14, connection blocks 28a and 28b as connection portions provided on both longitudinal ends of the base member 26, and a base member. The cushion body 30a, 30b attached to the intermediate part of the longitudinal direction of 26 is comprised.

  The base member 26 is a hard member formed of synthetic resin, metal, or the like, and has a long plate shape extending in a substantially constant cross-sectional shape in the width direction. Further, the base member 26 of the present embodiment has a curved surface whose upper surface is a flat surface extending on the human body support surface 14 of the bed 12 and whose downward projecting height increases as the lower surface goes to the center side in the length direction. Thus, it has a reverse saddle shape, and the mechanical strength is enhanced while suppressing an increase in weight.

  The connection blocks 28a and 28b are in the shape of a rectangular hollow box formed of a hard material such as synthetic resin or metal, and as shown in FIGS. 3 and 6, one of the base members 26 in the longitudinal direction is formed. The connecting block 28a is attached on the other end portion of the connecting block 28b, and the connecting block 28b is attached on the other end portion in the longitudinal direction. The connecting blocks 28a and 28b are provided with connecting means to be described later so that the mattress units 20a and 20b arranged on the human body support surface 14 are detachably connected to each other at the connecting blocks 28a and 28b. A first connecting belt 106 and a second connecting belt 108 are provided as connecting band-shaped members.

  The mattress units 20a and 20b have the same basic structure as described above, but the configurations of the cushion bodies 30a and 30b are different from each other. In the present embodiment, the pressure switching type includes the pressure switching type cushion body 30a. Two types of mattress unit 20a and a stationary mattress unit 20b including a stationary cushion body 30b are provided.

  First, FIG. 3 shows a cross-sectional view of the pressure switching mattress unit 20a. The cushion body 30a of the pressure-switching mattress unit 20a has a structure in which a plurality of cells 36 are disposed between the bottom cushion layer 32 and the top cushion layer 34, and is provided inside the cell 36. The height of the cell 36 can be changed and adjusted by adjusting the pressure of the fluid chamber 42 described later.

  The bottom cushion layer 32 is an elastic body (urethane foam or the like) that has a rectangular plate shape that is long in the width direction of the human body support surface 14, and the size of the human body support surface 14 in the length direction is substantially the same as that of the base member 26. In addition, the dimension in the width direction of the human body support surface 14 is substantially the same as the distance between the opposing surfaces of the connecting blocks 28a and 28b at both ends.

  The top cushion layer 34 is a plate-like elastic body (urethane foam or the like) extending in the width direction of the human body support surface 14, and the dimensions in the length direction and the width direction of the human body support surface 14 are both bottom portions. The cushion layer 32 is substantially the same. The top cushion layer 34 is disposed so as to face the bottom cushion layer 32 with a predetermined distance therebetween.

  In addition, a plurality of cells 36 are disposed between the bottom cushion layer 32 and the top cushion layer 34 that are arranged to face each other in the vertical direction. As shown in an enlarged view in FIG. 4, each cell 36 has a bag shape as a whole, and includes an upper bag-shaped portion 38 that opens downward and a lower bag-shaped portion 40 that opens upward. It has a structure fixed to each other. In the present embodiment, the upper bag-like portion 38 and the lower bag-like portion 40 are formed by stacking two sheets formed of synthetic resin such as polyurethane and welding the outer peripheral end portions of these sheets. Each cell 36 is formed by welding the openings of the upper bag-shaped portion 38 and the lower bag-shaped portion 40 to each other.

  Further, a fluid chamber 42 sealed from the outside is formed inside each cell 36, and is connected to a port 44 and a port 44 provided in the central portion of the bottom wall portion of the lower bag-like portion 40. The branch pipe 46 communicates with an external pump device 56 described later. Then, the pump device 56 supplies and discharges fluid such as air into the fluid chamber 42 through the port 44, whereby the internal pressure of the fluid chamber 42 is adjusted, and the height of the cell 36 associated with the expansion / contraction of the cell 36 is adjusted. It is possible to change the setting. The fluid supplied to and discharged from the cell 36 is not limited to air, and for example, a liquid such as water can be used.

  A constricted portion 48 is formed at an intermediate portion in the height direction of each cell 36. That is, since the upper bag-like portion 38 and the lower bag-like portion 40 are both gradually narrowed toward the opening, the fixing portion (the fixing portion between the upper bag-like portion 38 and the lower bag-like portion 40 ( A constricted portion 48 is formed at the opening). As a result, the cell 36 is thin at the intermediate portion in the height direction at which the constricted portion 48 is provided, and has a two-stage structure having a substantially 8-shaped or hook shape in the longitudinal section during expansion.

  The cell 36 having such a structure is disposed between the bottom cushion layer 32 and the top cushion layer 34, and the bottom cushion layer 32 supports the central portion of the bottom surface, and the top portion with respect to the top surface. A cushion layer 34 is overlaid. Thereby, the pressure switching type cushion body 30a is formed. A plurality of cells 36 are arranged in the width direction of the human body support surface 14 of the bed 12. In this embodiment, seven cells 36 are arranged in a row on the bottom cushion layer 32. Has been. In addition, the branch pipe line 46 connected to the port 44 provided in each cell 36 is disposed so as to extend on the bottom cushion layer 32 toward the connection block 28a. As shown in an enlarged view in FIG. 4, seven recesses 50 having different lengths extending toward the connecting block 28 a are formed in the upper surface of the bottom cushion layer 32, and cell portions are formed in these recesses 50. Seven branch pipes 46 extending from the 36 ports 44 are respectively fitted and positioned. Further, the top cushion layer 34 superimposed on the cell 36 is relatively close to / separated from the bottom cushion layer 32 by expansion and contraction of the cell 36.

  Furthermore, a valve unit 52 and a control unit 54 are accommodated in one of the connecting blocks 28a of the pressure switching type mattress unit 20a. The valve unit 52 is supported and fixed to the connection block 28a via a sound absorbing material 53 such as urethane foam. Here, the system configuration for controlling the internal pressure of the cell 36 of the pressure switching mattress unit 20a will be described in detail with reference to FIG. As schematically shown in FIG. 5, the mattress 10 is configured by combining a pressure switching mattress unit 20a and a stationary mattress unit 20b. Each pressure-switching mattress unit 20a includes seven cells 36 that are disposed adjacent to each other in the lateral direction (the left-right direction in FIGS. 1 and 5) constituting the cushion body 30a, and the fluid to the seven cells 36. A valve unit 52 that controls supply / discharge control and a control unit 54 are included. Seventeen such pressure-switchable mattress units 20a are juxtaposed in the longitudinal direction of the mattress 10 (vertical direction in FIGS. 1 and 5) with four stationary mattress units 20b interposed therebetween. . Accordingly, a total of 119 (7 × 17) cells 36 are arranged on the human body support surface 14 of the bed 12.

  The valve unit 52 is connected to a main conduit 57 extending from the pump device 56 and is connected to a branch type fluid conduit 58 to which seven branch conduits 46 extending from the cell 36 are connected. 7 includes seven switching valves 60 each including an electromagnetic valve or the like. On the other hand, the control unit 54 is configured using a control circuit configured on a printed circuit board, and is electrically connected to each switching valve 60. The control unit 54 transmits a control signal to each switching valve 60 to control driving based on a command from the external main controller 70 that is electrically connected to the branch pipe line via the switching valve 60. The connection and shutoff of 46 fluid conduits 58 are selectively switched.

  The pump device 56 is provided with an air supply valve 62 and an exhaust valve 64 made of, for example, electromagnetic valves, and is connected to the main conduit 57. The air supply valve 62 is connected to a pump 66 provided in the pump device 56. On the other hand, the exhaust valve 64 communicates with the atmosphere. Further, the pump device 56 is provided with a pressure gauge 68 and is connected to the main pipe line 57.

  The pump device 56 is provided with a main controller 70. The main controller 70 is electrically connected to an air supply valve 62, an exhaust valve 64, and a pump 66, and controls these operations based on a control signal from a control device 74 described later. Furthermore, the main controller 70 is electrically connected to a pressure gauge 68 so that the internal pressure of the main pipe line 57 can be measured. Further, the main controller 70 is electrically connected to the control unit 54 of each pressure switching mattress unit 20a, and by transmitting a control signal to each control unit 54, each main unit 70a in each pressure switching mattress unit 20a. The operation of the switching valve 60 is controlled. Furthermore, the pump device 56 is provided with a power supply device 72. The power supply device 72 is connected to the control unit 54 of each pressure switching type mattress unit 20a, and supplies drive power to the control unit 54 and the switching valve 60.

The main controller 70 of the pump device 56 is electrically connected to the control device 74. The control device 74 is a CPU (Central Processing).
(Unit) 76, ROM (Read Only Memory) 78, RAM (Random Access Memory) 80, drive circuit 82, and power supply circuit 84. The ROM 78 stores a control program for the internal pressure of the cell 36 and the like. The RAM 80 temporarily stores the calculated value of the control program, the measured value from the pressure gauge 68, and the like. Then, the CPU 76 transmits a control signal to the main controller 70 of the pump device 56 through the drive circuit 82 based on the control program stored in the ROM 78, thereby supplying and discharging air to the main pipeline 57 and each cell. The operation of the switching valve 60 is controlled.

  As described above, the pressure switching type mattress unit 20a includes the pressure switching type cushion body 30a in which the internal pressure of the cell 36 can be changed and set, the branch pipe 46 required for driving each cell 36 of the cushion body 30a, The valve unit 52 and the control unit 54 for controlling the supply and discharge of the fluid to and from the pipe 46 are accommodated and arranged in a space efficient manner.

  Next, FIG. 6 shows a cross-sectional view of the static mattress unit 20b. The cushion body 30b of the stationary mattress unit 20b has a thick rectangular plate shape as a whole, and is composed of an elastic body such as porous urethane foam. In the cushion body 30b, the dimension in the length direction of the human body support surface 14 is substantially the same as that of the base member 26, and the dimension in the width direction of the human body support surface 14 is the distance between the opposing surfaces of the connecting blocks 28a and 28b at both ends. It is almost the same. Further, the cushion body 30b is thick, and its height dimension is substantially the same as the height dimension of the connecting blocks 28a, 28b at both ends, and the top cushion layer 34 of the pressure switching type mattress unit 20a. It is set to be flush with the surface of the surface at substantially the same height position.

  Inside the one connection block 28a of the stationary mattress unit 20b, there are electrically connected to the control unit 54 a fluid conduit 86 communicating with a fluid conduit 58 accommodated in the connection block 28a of the pressure switching mattress unit 20a. A conductive path 88 connected to is accommodated.

  The pressure-switching mattress unit 20a and the stationary mattress unit 20b having such a structure are arranged and arranged in an arbitrary combination according to the body shape of the user and the condition of the disease. In the present embodiment, the pressure switching type mattress unit 20a is all disposed except for four stationary mattress units 20b disposed on a part of the lower side of the human body support surface 14. Here, the connection method of the power supply system and the pipeline system in the connecting block 20a of the mattress units 20a and 20b will be described with reference to FIG.

  As schematically shown in FIG. 7, the connecting block 28a of the pressure-switching mattress unit 20a is one of a pair of opposing walls 90a and 90b that face each other in the alignment direction (left-right direction in FIG. 7). An input connector 92 electrically connected to the control unit 54 and an input port 94 communicated with the fluid pipe 58 of the valve unit 52 are provided on the outer surface of the facing wall 90a. An output port 96 electrically connected to the control unit 54 and an output port connected to the fluid pipe 58 of the valve unit 52 are provided on the outer surface of the opposing wall 90b which is the other of the pair of opposing walls 90a and 90b. 98 is provided.

  Similarly, the connection block 28 a of the stationary mattress unit 20 b includes an input connector 92 electrically connected to the conductive path 88 and an input port 94 connected to the fluid conduit 86 on the outer surface of one opposing wall 90 a. And an output connector 96 electrically connected to the conductive path 88 and an output port 98 connected to the fluid conduit 86 are provided on the outer surface of the other opposing wall 90b.

  And between the connecting blocks 28a adjacent to each other in the alignment direction of the mattress units 20a and 20b (left and right in FIG. 7), the upstream side close to the pump device 56, the main controller 70 and the power supply device 72 (left side in FIG. 7). The output connector 96 of the connection block 28a positioned at the position is sequentially connected to the input connector 92 of the connection block 28a positioned on the downstream side (right side in FIG. 7) by the covered electric wire 100. Further, the output port 98 of the upstream connection block 28 a is sequentially connected to the input port 94 of the downstream connection block 28 a by the connection pipe 102. Although not shown, the input connector 92 provided on the connecting block 28a of the pressure switching mattress unit 20a located on the most upstream side is electrically connected to the power supply device 72 and the control device 74, and the input port 94 Is connected to the main pipe 57 of the pump device 56. Furthermore, the output connector 96 and the output port 98 provided in the connection block 28a of the pressure switching mattress unit 20a located on the most downstream side are plugged with a cover or the like.

  In this way, the output connector 96 and the input connector 92, and the output port 98 and the input port 94 provided in the connection block 28a of the mattress units 20a and 20b arranged in alignment are sequentially connected by the covered electric wire 100 and the connection pipe 102. Thus, the control unit 54 and the conductive path 88 housed inside the connection block 28a, and the fluid pipe line 58 and the fluid pipe line 86 are connected to each other, and are connected to the external power supply device 72, the control device 74, and the pump device 56. The connected whole power supply system or pipeline system can be configured. As a result, the piping and power distribution necessary for driving the pressure-switching mattress unit 20a can be integrated into the connection block 28a in a very compact manner. Furthermore, the static mattress unit 20b is placed between the pressure-switching mattress units 20a by accommodating the fluid pipes 86 and the conductive paths 88 in the connection block 28a of the static mattress unit 20b that does not require piping or power distribution. Even when it is interposed, the power supply system and the pipeline system are not cut off via the fluid pipeline 86 and the conductive path 88. Further, the mattress units 20a and 20b including the piping and power distribution can be easily replaced by simply attaching and detaching the input / output connectors 92 and 96 and the input / output ports 94 and 98 provided in the connecting block 28a.

  Further, a recess 104 is provided in the outer surface of the opposing wall 90b of the connecting block 28a. An output connector 96 and an output port 98 are provided on the bottom surface of the recess 104 so as to be accommodated in the recess 104. In addition, the recess 104 is formed with a depth dimension that is equal to or higher than the protruding height from the bottom surface of the output connector 96 and the output port 98. When the mattress units 20a and 20b are aligned, the input / output connectors 92 and 96 and the input / output ports 94 and 98 provided on the opposing walls 90a and 90b of the adjacent connection blocks 28a and 28a are connected to each other. With the covered electric wire 100 and the connecting pipe 102 both being accommodated in the recess 104, the connecting blocks 28a can be brought close to each other. As a result, when the mattress 10 is used, the input / output connectors 92 and 96, the input / output ports 94 and 98, the covered electric wire 100, and the connecting pipe 102 do not protrude to the outside. Or problems such as accidental disconnection or disconnection of electric wires can be prevented, and connection stability can be ensured.

  The recess 104 may be provided only on one opposing wall 90b as illustrated, but may be provided on both opposing walls 90a to accommodate connectors and ports, respectively. Moreover, although illustration is abbreviate | omitted, it is desirable for connection block 28a, 28b to provide the opening-closing part (door part) in a part of wall part. Thereby, the maintainability of the internal device of the connection block 28a is improved. Further, the inside of the connection block 28b can be used for a storage box or the like.

  The mattress units 20a and 20b arranged in this manner are connected to the first connecting belt 106 and the second connecting belt 106 as connecting belts that form connecting means provided in the connecting blocks 28a and 28b. The belts 108 are connected to each other. The connection structure of the mattress units 20a and 20b will be described by extracting three connection blocks 28a arranged in the length direction as shown in FIGS. Here, for easy understanding of the connection structure, the input / output connectors 92 and 96 and the input / output ports 94 and 98 provided on the opposing walls 90a and 90b of the connection blocks 28a and 28b, the covered electric wire 100 connecting them, and the connection The illustration of the tube 102 is omitted. In the following, the connection structure of the connection block 28a attached on one end in the longitudinal direction of the base member 26 will be described. However, the connection block 28b attached on the other end in the longitudinal direction of the base member 26. The connection structure is the same as the connection structure of the connection block 28a.

  Each of the first and second connecting belts 106 and 108 has a thin and narrow longitudinal belt shape, and is formed of synthetic resin, chemical fiber, synthetic leather, or the like. Further, it is desirable that the first and second connecting belts 106 and 108 are easily deformed in the thickness direction by the action of an external force and have a small distortion in the longitudinal direction (difficult to stretch and deform). In order to achieve positioning and tilting in the length direction of the connecting blocks 28a, 28a, which will be described later, the smaller the distortion in the longitudinal direction of the first and second connecting belts 106, 108, the better. For the purpose of facilitating the attachment / detachment of the second connecting belts 106, 108, the covered electric wire 100, and the connecting pipe 102, distortion may be allowed as long as the positioning action of the connecting block 28a is sufficiently obtained. .

  In addition, surface fasteners (not shown) are provided at both end portions of the first and second connecting belts 106 and 108, respectively. More specifically, the first connecting belt 106 is provided with a surface fastener on the upper surface of one end and a surface fastener on the lower surface of the other end. The surface fastener 108 is provided on the lower surface of one end portion, and the surface fastener is provided on the upper surface of the other end portion.

  The first connecting belt 106 is attached to the end of the connecting block 28a on the outer side in the width direction (the outer side in the width direction of the human body support surface 14 and the outer side in the longitudinal direction of the base member 26). The connecting belt 108 is attached to an end of the connecting block 28a on the inner side in the width direction (inward in the width direction of the human body support surface 14 and inward in the longitudinal direction of the base member 26). In addition, one end in the length direction of the first connecting belt 106 is attached to the upper surface of the connecting block 28a located on the head side in a detachable manner using a hook-and-loop fastener, and the first connecting belt 106 is attached. Is attached to the lower surface of the connecting block 28a located on the leg side in a detachable state using a hook-and-loop fastener. Further, one end of the second connecting belt 108 is attached to the lower surface of the connecting block 28a located on the head side in a detachable manner using a hook-and-loop fastener, and the other end of the second connecting belt 108 is attached. The end portion is attached to the upper surface of the connecting block 28a located on the leg side in a detachable state using a hook-and-loop fastener. As is clear from the above, surface fasteners are fixed to the upper and lower surfaces of the connecting block 28a in advance at both ends in the width direction. However, the first and second connection belts 106 and 108 may be fixed to the connection block 28a in a non-detachable state by means such as adhesion or welding.

  Further, intermediate portions in the length direction of the first and second connecting belts 106 and 108 extend substantially vertically between the adjacent connecting blocks 28a and 28a. An intermediate portion of the first and second connection belts 108 is arranged along the side surface in the length direction of the connection block 28a, and the connection blocks 28a and 28a are not restricted and approached or separated. Relative displacement is allowed. In the present embodiment, the first and second connection belts 106 and 108 are attached to both of the connection blocks 28a and 28a attached on both ends of the base member 26 in the longitudinal direction, and are adjacent in the alignment direction. The connecting blocks 28a and 28a are connected to each other.

  As described above, the first and second connection belts 106 and 108 are attached to the adjacent connection blocks 28a and 28a in the alignment direction, so that the connection blocks 28a and 28a are aligned by the first and second connection belts 106 and 108 in the alignment direction. Are connected to each other. The external force acting to separate the connecting blocks 28a, 28a in the alignment direction is a force in the surface direction with respect to the attachment portions (surface fasteners) of the first and second connecting belts 106, 108 to the connecting blocks 28a, 28a. Therefore, the first and second connecting belts 106 and 108 are not detached from the connecting blocks 28a and 28a by the action of the external force, and the connecting blocks 28a and 28a are held in the connected state in the alignment direction. .

  Furthermore, since the first and second connecting belts 106 and 108 are both prevented from expanding and contracting in the alignment direction, the relative displacement in the alignment direction and the height direction of the adjacent connection blocks 28a and 28a in the alignment direction. Are limited and positioned relative to each other. That is, in order for the connecting blocks 28a and 28a to be relatively displaced in the alignment direction or the height direction, at least one of the first and second connection belts 106 and 108 needs to extend in the alignment direction. Since the second connecting belts 106 and 108 are limited in expansion and contraction in the alignment direction, the relative displacement in the alignment direction and the height direction of the connection blocks 28a and 28a is limited.

On the other hand, the connecting blocks 28a and 28a adjacent in the alignment direction are virtually connected to each other in the width direction between the upper ends in the connected state by the first and second connecting belts 106 and 108 as shown in FIG. Relative tilting is allowed around the tilt axis (see FIG. 10). That is, the connecting blocks 28a and 28a are provided with a relative inclination angle between one end portion in the length direction of the first connecting belt 106 and the intermediate portion and the other end portion in the length direction of the second connecting belt 108 and the intermediate portion. By changing the relative inclination angle (θ _{1 in} FIG. 11), relative inclination about the axis of the inclination extending in the width direction between the upper ends of the connecting blocks 28a and 28a is allowed. In this case, the first and second connection belts 106 and 108 are both thin strips and easily deformed in the thickness direction, so that the connection blocks 28a and 28a are allowed to tilt as described above due to the action of external force. . Thereby, in this embodiment, the connection means which connects a connection member (connection block 28a) so that tilting is possible is comprised by the 1st, 2nd connection belt 106,108.

Similarly, the connection blocks 28a and 28a adjacent to each other in the alignment direction are virtually extended in the width direction between the lower ends when connected by the first and second connection belts 106 and 108, as shown in FIG. Relative tilting is allowed around a tilt axis (see FIG. 10). That is, the connecting blocks 28a and 28a are provided with a relative inclination angle between the other end portion in the length direction of the first connecting belt 106 and the intermediate portion and one end portion and the intermediate portion in the length direction of the second connecting belt 108. By changing the relative inclination angle (θ _{2 in} FIG. 12), relative inclination around the axis of the inclination extending in the width direction between the lower ends of the connecting blocks 28a, 28a is allowed. In this case, the first and second connection belts 106 and 108 are both thin strips and easily deformed in the thickness direction, so that the connection blocks 28a and 28a are allowed to tilt as described above due to the action of external force. .

  The adjacent connection blocks 28b and 28b in the alignment direction are connected by the first and second connection belts 106 and 108 in the same manner as the connection blocks 28a and 28a, and are relatively positioned in the alignment direction and the height direction. ing. Further, the connecting blocks 28b, 28b are allowed to be relatively tilted around an axis of virtual tilt extending in the width direction between the upper end portions, and have virtual tilt extending in the width direction between the lower end portions. Relative tilting is allowed around the axis.

  As described above, the connection blocks 28a and 28b provided on both ends in the longitudinal direction of the base member 26 are allowed to be tilted relative to the other connection blocks 28a and 28b adjacent in the alignment direction. The mattress units 20a and 20b can be tilted relative to the adjacent mattress units 20a and 20b. Therefore, for example, even when the bed 12 has a back raising mechanism and the human body support surface 14 is bent at an intermediate portion in the length direction, the adjacent connecting blocks 28a and 28b are adjacent to each other as shown in FIG. By tilting, the mattress 10 can be deformed into a concave shape upward, and the deformation of the human body support surface 14 can be followed. Further, even when the human body support surface 14 of the bed 12 is configured such that the portion supporting the knee when the back is raised is convexly deformed upward, as shown in FIG. 12, the adjacent connecting blocks 28a and 28b are adjacent to each other. By tilting, the mattress 10 can be deformed into a convex shape upward and follow the deformation of the human body support surface 14.

  As described above, all mattress units 20a and 20b are connected to each other by a single connection structure using the first and second connection belts 106 and 108, and at all the connection portions. Any one of a concave deformation, a convex deformation, and no deformation is selectively allowed. Therefore, the mattress 10 does not require special adjustment or replacement of parts, and the difference in deformation (back-up) of the bed 12 such as the presence or absence of convex deformation at the portion supporting the leg, It is possible to freely cope with the difference in the bending position of each other. In addition, a flexible connection structure is realized by an extremely simple structure using the first and second connection belts 106 and 108, which is easy to manufacture and has advantages in terms of reliability and weight reduction.

  Further, since the first and second connection belts 106 and 108 are detachably attached to the connection block 28a with hook and loop fasteners, the first and second connection belts 106 and 108 are removed from the connection block 28a. Thus, the mattress units 20a and 20b can be easily detached from the other mattress units 20a and 20b. Therefore, the first and second connection belts 106 and 108 can be easily replaced, and the base member 26, the connection block 28a, the cushion bodies 30a and 30b, etc. constituting the mattress units 20a and 20b can be replaced. Maintenance can also be easily performed.

  In this way, a plurality of pressure switching type mattress units 20a and stationary type mattress units 20b are arranged in alignment on the human body support surface 14, and the adjacent connection blocks 28a, 28b are mutually connected to the first and second connection belts 106, 108. When connected, the surfaces of the cushion bodies 30a and 30b of the mattress units 20a and 20b are substantially flush. A surface mat 22 is overlaid on the surfaces of the mattress units 20a and 20b connected to each other. The surface layer mat 22 is an elastic body such as urethane foam having a thin rectangular plate shape, and the connection boxes 28a, 28b and the cushion bodies 30a, 30b are connected between the head side block 16 and the leg side block 18. It is arrange | positioned so that an upper surface may be covered.

  A body pressure sensor 24 is superimposed on the upper surfaces of the cushion bodies 30a and 30b, and the body pressure sensor 24 is disposed between the surface mat 22 and the cushion bodies 30a and 30b. As the body pressure sensor 24, a load cell using a strain gauge or a magnetostrictor can be adopted, but in the present embodiment, a sheet-like capacitive sensor is employed. As such a capacitance type sensor, conventionally known ones (for example, those disclosed in Japanese Patent No. 4565359) can be adopted as appropriate, so only a brief description will be given here. That is, the body pressure sensor 24 has a belt-like and flexible first electrode film superimposed on one surface of a dielectric layer made of an elastomer such as urethane foam, and the other surface is substantially the same as the first electrode film. A second electrode film having the same shape and having a different direction as a longitudinal direction is superposed, and a detection unit is configured at a portion facing the first and second electrode films. When an external force (body load) such as body pressure acts on the detection unit, the thickness of the dielectric layer (distance between the opposing surfaces of the first and second electrode films) changes, and the capacitor configured in the detection unit Therefore, the body pressure acting on the detection unit is detected based on the change in capacitance. In particular, the body pressure sensor 24 is desirably thin and flexible in order not to adversely affect sleeping comfort.

  In the present embodiment, the detection unit of the body pressure sensor 24 is provided in 21 vertical × 7 horizontal, and when the pressure switching mattress unit 20a is selected and assembled, the cell of the cushion 30a 36 is aligned and installed. That is, the body pressure sensor 24 has 147 detection units, and even when the mattress 10 is composed of 21 pressure-switching mattress units 20a, the load acting on all 147 cells 36 is not affected. It is possible to measure. However, the number of detection units of the body pressure sensor 24 is not necessarily limited to the same number as the number of cells 36. For example, more detection units than the cells 36 are provided to detect body load with higher accuracy. It can also be done.

  Based on the measurement result of the user's body pressure by the body pressure sensor 24, the pressure of the fluid chamber 42 of each cell 36 is adjusted. Thereby, the elasticity and height of the cell 36 are controlled so that the body pressure acts in a wide range, and the occurrence of pressure sores is suppressed. More specifically, for example, in a portion where the body pressure measured by the body pressure sensor 24 is large, the fluid in the fluid chamber 42 is discharged, the height of the cell 36 is lowered, and the body pressure sensor 24 measures. In the portion where the body pressure is low, the fluid is supplied to the fluid chamber 42 and the height of the cell 36 is increased, so that the reaction force of the body pressure acts on the user's body over a wide range. It is like that.

  In the mattress 10 of this embodiment having such a configuration, the mattress units 20a and 20b extending in the width direction of the human body support surface 14 are taken as one unit, and they are aligned and arranged in the length direction of the human body support surface 14. The mattress units 20a and 20b are detachably connected to each other by connecting blocks 28a and 28b provided at both ends of the mattress units 20a and 20b. Therefore, only the specific mattress units 20a and 20b in which a problem has occurred can be disconnected and taken out, and can be easily replaced or maintained, resulting in excellent economy.

  In particular, since the connecting block 28a is provided on both ends of the base member 26, the connecting block 28a can be easily attached and detached from the side of the bed 12, and the handling and operability are excellent. .

  Further, as the mattress units 20a and 20b, a plurality of types in which the types of the cushion bodies 30a and 30b are different are prepared, and the pressure switching type mattress unit 20a and the stationary type mattress unit 20b can be arbitrarily selected and combined. . Therefore, the pressure-switchable mattress unit 20a can be used for a portion where pressure ulcers may occur, and an inexpensive stationary mattress unit 20b can be used for other portions depending on the body shape and symptoms of the user. This makes it possible to provide the mattress 10 provided with the pressure-switching type cushion body effective for preventing the occurrence of pressure sores at a relatively low cost.

  In the pressure-switching mattress unit 20a that requires a large number of pipes and wires for driving the plurality of cells 36, the connection blocks 28a and 28b provided on the end of the base member 26 are used. Thus, the valve unit 52 and the control unit 54 are collectively accommodated in the connection blocks 28a and 28b. As a result, the handleability and maintainability of the pressure switching mattress unit 20a are advantageously improved, and the valve unit 52 is accommodated in the connecting blocks 28a and 28b, so that a soundproofing effect such as operation noise of the switching valve 60 is also obtained. I can plan. In particular, since the valve unit 52 is supported and fixed to the connection block 28 via the sound absorbing material 53, a further soundproofing effect can be achieved.

  In addition, in the static mattress unit 20b, since the fluid conduit 86 and the conductive path 88 are provided in the connection block 28a, the static mattress unit 20b is interposed between the pressure switching mattress unit 20a. However, the valve unit 52 and the control unit 54 of the pressure-switching mattress unit 20a on both sides are communicated with each other via the fluid conduit 86 and the conductive path 88 of the stationary mattress unit 20b. Accordingly, the pressure switching mattress unit 20a and the stationary mattress unit 20b can be combined in any order without hindering the function of the pressure switching mattress unit 20a.

  As mentioned above, although embodiment of this invention was explained in full detail, this invention is not limited by the specific description. For example, in the above-described embodiment, the mattress 10 is configured by combining the pressure switching mattress unit 20a and the stationary mattress unit 20b. However, the mattress 10 includes only the pressure switching mattress unit 20a or the stationary mattress unit. Needless to say, the present invention includes a mattress configured by combining a plurality of mattress units configured by the same cushion body. Even in such a case, the maintenance and handling of the mattress 10 is divided in units of the mattress unit 20a or 20b and detachably connected to the connecting blocks 28a and 28b provided on at least one end of the base member 26. Effects such as sex can be enjoyed in the same way.

  Further, in the above-described embodiment, the example in which the connecting units of the adjacent connecting blocks 28a and 28b are tiltably connected by the first and second connecting belts 106 and 108 has been described. However, the connecting unit is not limited thereto. As long as the connecting blocks 28a and 28b are detachably connected, any known connecting structure can be adopted. For example, the connecting means may be configured by providing a fitting convex portion on one opposing wall 90a of the connecting blocks 28a and 28b, and providing a fitting concave portion on the opposing wall 90b on the other, and fitting the concave and convex portions together. Good.

  Furthermore, although the pressure switching mattress unit 20a is illustrated as having seven cells 36 aligned in the width direction, it is also possible to provide a plurality of types of pressure switching mattress units 20a having different numbers and shapes of cells 36. is there. Similarly, in the stationary mattress unit 20b, in addition to the illustrated porous urethane foam, a plurality of types of stationary mattress units 20b in which the cushion body 30 is formed of different types of elastic bodies such as springs are provided. Also good. As a result, the cushion bodies 30a and 30b can be selected in accordance with the user's body shape and symptoms.

  A cushion layer (for example, urethane foam) may be sandwiched between the body pressure sensor 24 and the cushion bodies 30a and 30b.

10: mattress, 12: bed, 14: human body support surface, 16: head side block, 18: leg side block, 20a: pressure switching type mattress unit, 20b: stationary type mattress unit, 26: base member, 28a, b: connection block (connection part), 30a, b: cushion body, 32: bottom cushion layer, 34: top cushion layer, 36: cell, 42: fluid chamber, 46: branch conduit, 52: valve unit, 53 : Sound absorbing material, 54: Control unit, 56: Pump device, 57: Main pipeline, 58: Fluid pipeline, 60: Switching valve, 72: Power supply device, 74: Control device, 86: Fluid pipeline, 88: Conductive Road, 90a, b: opposing wall, 92: input connector, 94: input port, 96: output connector, 98: output port, 100: covered electric wire (electric wire), 102: connecting pipe, 104: concave , 106: first connecting belt (connecting strip, connecting means), 108: second connecting belt (connecting strip, connecting means)

Claims (9)

A mattress used on a support surface of a human body,
A base member extending in the width direction of the support surface; a connecting portion provided at at least one of the longitudinal end portions of the base member; and a cushion body provided at at least an intermediate portion in the longitudinal direction of the base member. While having a plurality of constructed mattress units,
The mattress, wherein the plurality of mattress units are arranged in alignment in the length direction of the support surface and are detachably connected to each other by a connecting means provided in each connecting portion. While the plurality of mattress units having different configurations of the cushion body, the plurality of mattress units are configured by an arbitrarily selected mattress unit,
The plurality of types of mattress units include a pressure switching type mattress unit composed of a plurality of cells whose height can be changed by adjusting the pressure of a fluid chamber provided inside the cushion body, and the cushion body. The mattress according to claim 1, further comprising a stationary mattress unit made of an elastic body.   In the pressure-switching mattress unit, the connecting portion is configured to include a hollow box-like connecting block, and a fluid conduit that communicates the cell with an external pump device inside the connecting block; The mattress according to claim 2, wherein a valve unit including a plurality of switching valves for connecting / blocking each cell to / from a fluid conduit and a control unit for controlling driving of the switching valves are accommodated.   The mattress according to claim 3, wherein the valve unit is supported and fixed to the connection block of the connection body via a sound absorbing material.   3. The static mattress unit according to claim 2, wherein the connecting portion includes a hollow box-like connecting block, and a fluid conduit and a conductive path are accommodated in the connecting block. Mattress The connection block of each of the connection portions has a pair of opposed walls that face each other in the alignment direction of the plurality of unit cells, and one of the pair of opposed walls includes an input port of the flow conduit and the An input connector for connecting to the control unit or the conductive path is provided, while an output connector for connecting to the output port of the fluid conduit and the control unit or the conductive path is provided on the other of the pair of opposed walls. And
By connecting one of the output ports of the connecting blocks adjacent to each other in the alignment direction of the mattress unit to the other input port by a connecting pipe sequentially, each cell can be communicated with the pump device,
The power supply and control signal from an external control device can be supplied to each control unit of the connection block by sequentially connecting the one output connector and the other input connector with an electric wire. The mattress according to any one of 5.   A recess is formed in at least one of the pair of opposing walls of the connection block of each of the connection portions, and the input / output port and the input / output connector, and the connection pipe and the electric wire attached thereto in the recess The mattress according to claim 6, wherein the mattress is accommodated.   The connecting means provided in the connecting portion of the plurality of mattress units is configured by a plurality of connecting strips arranged side by side in the width direction, and the length direction of the plurality of connecting strips is An intermediate portion extends vertically between the connecting portions adjacent in the alignment direction, and both end portions of at least one of the connecting strips are connected to the upper surface and the other of the connecting portions adjacent in the alignment direction. The both ends of the other connecting band-like body are attached to the lower surface of the one connecting member and the upper surface of the other connecting member. The mattress according to any one of 7 above.   The mattress according to claim 8, wherein both end portions of the connection band are detachably attached to the connection member with a hook-and-loop fastener.

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