JP4941936B2 - cushion - Google Patents

Description

  The present invention relates to a cushion that is placed on, for example, a seating surface of a wheelchair and softly supports a seated person's buttocks in order to prevent pressure ulcers generated by the seated person.

In general, this type of cushion is composed of a substantially cylindrical air bag extending upward from a support member, and a plurality of air cells arranged in the front-rear direction and the width direction of the seating surface, and a wheelchair. It is formed into a flexible flat plate that can be placed on the seating surface, and includes a support member that supports the lower end side of each air cell, and an air passage that communicates with each other in each air cell. When sitting, the air pressure in each air cell becomes equal to each other, and the pressure applied to the seated person's buttocks is known (see, for example, Patent Document 1).
JP-T 6-510436

  By the way, in the cushion, in order to adjust the air pressure in each air cell according to the weight and body shape of the seated person, an electric pump that can supply compressed air to each air cell, an electromagnetic valve that can discharge air from each air cell, Air pressure adjustment devices such as operation panels for operating pumps and solenoid valves are included. These air pressure adjustment devices are housed in an operation box separate from the cushion, and the operation box and cushion Are connected by flexible air piping. For this reason, when the cushion is placed on the seating surface of the wheelchair, it is necessary to attach the operation box to the side of the wheelchair, etc. There is a problem that the air piping connecting the operation box and the cushion obstructs the operation of the wheelchair.

  On the other hand, it is conceivable to install the operation box in the support member of the cushion. However, the support member has flexibility, whereas the operation box that accommodates each air pressure adjusting device generally has flexibility. Therefore, the flexibility of the portion of the support member where the operation box is attached is lost. In addition, since the seating surface of the wheelchair is formed so as to be appropriately curved according to the weight of the seated person, the portion where the flexibility of the support member is lost does not follow the seating surface of the wheelchair. There was a problem that the cushion was not stable.

  The present invention has been made in view of the above problems, and the object of the present invention is that an air pressure adjusting device can be arranged in a flexible support member that supports the lower ends of a plurality of air cells, And it is providing the cushion which can maintain the flexibility of a support member as much as possible.

In order to achieve the above object, the present invention provides a cushion that is placed on a predetermined seating surface and supports a seated person's buttocks so as to be aligned with each other in the front-rear direction and the width direction of the seating surface. A plurality of first air cells that support the vicinity of the seat bone and coccyx of the seated person, and are provided on both sides in the width direction of the seating surface with respect to the first air cell group composed of the first air cells. And each air bag has an area of 1.5 times or more of the air bag of the first air cell in plan view, and the front and rear direction of the seating surface of each air bag. Are provided on the front end side of the seating surface with respect to the first air cell group, and are formed of a sponge-like member. A front end side support member that supports the vicinity of the thigh of the seated person, and a flexible support member that is formed so as to extend along the seating surface and supports each air cell and the lower end side of the front end side support member; , Each of which corresponds to an electric pump, a solenoid valve, and a control device, and includes a plurality of air pressure adjusting devices provided to adjust the air pressure in each air cell, and each air pressure adjusting device is provided below each second air cell and Each is attached to the support member so as to be disposed below the front end side support member.
Further, the present invention provides a cushion which is placed on a predetermined seating surface and supports a seated person's buttocks, and is provided so as to be aligned with each other in the front-rear direction and the width direction of the seating surface, and extends upward. A plurality of first air cells comprising bags and supporting the vicinity of the seat bone and coccyx of the seated person, and provided on both sides in the width direction of the seating surface with respect to the first air cell group composed of the first air cells, respectively, Each air bag has an area 1.5 times or more that of the air bag of the first air cell in plan view, and the dimension in the front-rear direction of the seating surface of each air bag is the width direction. A plurality of second air cells that are larger than the size of the first air cell group, and a front end side of the seating surface with respect to the first air cell group, and is composed of a spongy member, A front end side support member that supports the vicinity, a flexible support member that is formed so as to extend along the seating surface, and supports the lower end side of each air cell and front end side support member, an electric pump, a solenoid valve, and At least one of the control devices is housed in a box, and includes a plurality of air pressure adjusting devices provided to adjust the air pressure in each air cell, and each air pressure adjusting device is provided below each second air cell. And / or it is attached to the support member so as to be arranged below the front end side support member.

As a result, a plurality of air pressure adjusting devices are respectively attached to the support members that support the lower end sides of the air cells, and therefore the air pressure adjusting devices are arranged in a flexible support member that supports the lower end sides of the plurality of air cells. can do. In addition, since a plurality of air pressure adjusting devices are respectively attached to flexible support members, and the electrical wiring and air piping tubes that connect the air pressure adjusting devices to each other are generally flexible, If each of the air amount adjustment device consists of having no flexible is the portion other than the portion where the pneumatic adjustment device is mounted in the support member flexible (e.g. between each pneumatic adjustment device The flexibility of the support member is not lost, and the area of the portion where the flexibility is lost is smaller than in the case where the devices for adjusting air pressure are integrated and attached to the support member. Further, since each air pressure adjusting device is attached to the support member so as to be disposed below each second air cell and / or below the front end side support member, it supports the vicinity of the seat bone and the tailbone of the seated person. Therefore, each air pressure adjusting device is not provided below each first air cell.

According to the present invention, the air pressure adjusting device can be arranged in a flexible support member that supports the lower end sides of a plurality of air cells, so that each air pressure adjusting device is provided separately from the cushion. This makes it easier to handle the cushion. In addition, since the area of the portion where the flexibility is lost can be reduced as compared with the case where each air pressure adjusting device is integrated and attached to the support member, the flexibility of the support member can be maintained as much as possible. For example, when the cushion is placed on a seating surface that is appropriately curved according to the weight of the seated person, the support member is deformed along the seating surface, which is extremely advantageous in stabilizing the cushion on the seating surface. In addition, since each air pressure adjusting device is not provided below the air cell for supporting the vicinity of the seat bone and the tailbone of the seated person, the height of the air cell for supporting the vicinity of the seatbone and the tailbone is made as large as possible. This is extremely advantageous in softly supporting the vicinity of the ischia and coccyx.

  1 to 13 show an embodiment of the present invention. FIG. 1 is a side sectional view of an air cell, FIG. 2 is a perspective view of the air cell, FIG. 3 is a perspective view of a base member, and FIG. 5 is a plan view of the cushion, FIG. 6 is a bottom view of the cushion, FIG. 7 is a sectional view taken along the line P-P in FIG. 5, FIG. 8 is a sectional view taken along the line Q-Q in FIG. 5 is a cross-sectional view taken along line RR in FIG. 5, FIG. 10 is a cross-sectional view taken along line SS in FIG. 5, FIG. 11 is a cross-sectional view taken along line RR in FIG. FIG. 11 is a cross-sectional view taken along line TT in FIG. 11, and FIG. 13 is a bottom view of the cushion showing the configuration of the air passage.

  The cushion is provided on both sides of the seating surface in the width direction with respect to the plurality of first air cells 10 for supporting the vicinity of the seat bone and the tailbone of the seated person and the first air cell group including the first air cells 10. A pair of front end side second air cells 20 and a pair of rear end side second air cells 30 provided on both sides in the width direction of the seating surface with respect to the first air cell group, and a seating surface with respect to the first air cell group A pair of front end side support members 40 provided on the front end side, a center support member 50 provided in the center in the width direction on the front end side of the seating surface with respect to the first air cell group, each first air cell 10, each first 2 air cells 20 and 30, front end side support members 40, and support members 60 that respectively support the lower end sides of the central support member 50. The seating surface is, for example, a seating surface of a wheelchair, and this cushion is used by being placed on the seating surface in order to softly support a seated person's buttocks. Moreover, each 2nd air cell 20 and 30 is corresponded to the side surface air cell described in the claim. In addition, the description of the direction in the following sentences applies to the front-back direction, the left-right direction, and the up-down direction shown in FIG.5, FIG.6, FIG.7 and FIG. Moreover, the left-right direction and the width direction coincide.

  Each first air cell 10 includes an air bag 11 having an open lower end, a base member 12 to which the air bag 11 can be detachably attached, and a ring-shaped holding member 13 that holds the air bag 11 on the base member 12. Have

  The air bag 11 is made of a flexible material such as soft rubber or plastic, and can enclose air therein. The air bag 11 has a cylindrical portion 11a having a circular cross section extending in the vertical direction, and an upper end surface 11b formed so as to close the upper end of the cylindrical portion 11a. The cylindrical portion 11a and the upper end surface 11b are formed in a thin film shape having a uniform thickness dimension of 1 mm or less. The lower end of the cylindrical part 11a is open, and the opening edge part 11c at the lower end of the cylindrical part 11a has a larger thickness dimension than the other part of the cylindrical part 11a, and the other part of the cylindrical part 11a. It protrudes radially inward from the inner peripheral surface.

  The base member 12 is made of rubber or plastic that is harder than the material of the air bag 11 and is formed in a disk shape. The upper end surface of the base member 12 is provided with an upper end side protruding portion 12a having a circular cross section protruding upward, and the upper end side protruding portion 12a is provided with four vent holes 12b extending in the vertical direction. In addition, a radially projecting portion 12c is provided on the outer peripheral surface on the distal end side of the upper end side projecting portion 12a so as to project radially outward from the outer peripheral surface on the proximal end side. The opening edge portion 11c of the air bag 11 is attached to the outer peripheral surface of the upper end side protruding portion 12a by fitting, and the inner peripheral surface of the opening edge portion 11c engages with the radial protruding portion 12c of the upper end side protruding portion 12a from below. . Further, when the holding member 13 is attached to the outer peripheral surface of the opening edge portion 11c after the opening edge portion 11c of the air bag 11 is fitted to the upper end side protruding portion 12a, the opening edge portion 11c is pressed against the upper end side protruding portion 12a side. It is done. Thereby, between the opening edge part 11c and the upper end side protrusion part 12a is sealed.

  The lower end surface of the base member 12 is provided with a lower end side protruding portion 12d having a circular cross section protruding downward. The lower end protruding portion 12d is provided with an air passage 12e penetrating from the outer peripheral surface to each vent hole 12b as necessary. For example, by inserting an air pipe P into each air passage 12e as shown in FIG. The vent holes 12b of the base members 12 communicate with each other.

  Each front-end-side second air cell 20 includes an air bag 21 formed so that the lower end is opened and extended upward, and a base member 22 that closes the lower end of the air bag 21.

  The air bag 21 is made of a flexible material such as soft rubber or plastic, and can enclose air therein. The size of the air bag 21 in the front-rear direction of the seating surface is larger than the size in the width direction, and the air bag 21 has an area three times or more that of the air bag 11 of the first air cell 10 in plan view (see FIG. 5). The air bag 21 is formed in a thin film shape that is slightly thicker than the air bag 11, and has a larger dimension in the width direction of the seating surface than the air bag 11. That is, when the air pressure in the air bag 21 becomes substantially equal to the air pressure in the air bag 11, the air bag 21 has higher rigidity in the front-rear direction and the width direction of the seating surface than the air bag 11.

  The base member 22 is made of rubber or plastic that is harder than the material of the air bag 21, and a plurality of protruding portions 22 a that protrude downward are provided on the lower surface of the base member 22. Each protrusion 22a is provided with a vent hole in the same manner as the lower end protrusion 11d. The lower end surface of the air bag 21 is fixed to the upper surface of the base member 22 with an adhesive or the like. The protrusion 22a is provided with an air passage (not shown) similar to the air passage 12e penetrating from the outer peripheral surface to the vent hole as necessary. Each air pipe P1, P2, P3, P4, P5, P6 described later can be inserted into this air passage.

  Each rear-end-side second air cell 30 includes an air bag 31 formed so that the lower end is opened and extended upward, and a base member 32 that closes the lower end of the air bag 31.

  The air bag 31 is made of a flexible material such as soft rubber or plastic, and can enclose air therein. The size of the air bag 31 in the front-rear direction of the seating surface is larger than the size in the width direction, and the air bag 31 has an area three times or more that of the air bag 11 of the first air cell 10 in plan view (see FIG. 5). The air bag 31 is formed in a thin film shape that is slightly thicker than the air bag 11, and has a larger dimension in the width direction of the seating surface than the air bag 11. That is, when the air pressure in the air bag 31 is substantially equal to the air pressure in the air bag 11, the air bag 31 has higher rigidity in the front-rear direction and the width direction of the seating surface than the air bag 11.

  As described above, a plurality of first air cells 10 are provided to support the vicinity of the seat bone and the tailbone of the seated person, and the second air cells 20 are provided on both sides of the seating surface in the width direction with respect to the first air cell group. 30, and the air pressure in each second air cell 20, 30 is substantially equal to the air pressure in each first air cell 10, the air bags 21, 31 have a seating surface in the front-rear direction and the width direction. High rigidity. For this reason, when the side surface side of the collar is positioned on the inner side in the width direction of the first air cell group, the deformation of the seating surface of each first air cell 10 in the width direction is restricted by each second air cell 20, 30. That is, each first air cell 10 is formed in a flexible structure having a height sufficient to reduce the pressure applied to the vicinity of the seat bone and coccyx, but each first air cell 10 extends in the width direction of the seating surface. It will not fall unnecessarily. Therefore, the vicinity of the seat bone and the tailbone of the seated person can be softly supported, and compared with the case where each first air cell 10 is provided up to the end in the width direction of the support member 60 instead of each second air cell 20, 30. Thus, the posture of the seated person can be stabilized. In addition, when the seated person's buttocks are large and the side surface side of the seated person's buttocks is located outside the first air cell group in the width direction, the deformation of the seating surface of each first air cell in the width direction is caused by the second air cell 20, 30, or the movement of the buttocks in the width direction and the front-rear direction is suppressed by the second air cells 20 and 30, thereby stabilizing the posture of the seated person.

  The base member 32 is made of rubber or plastic harder than the material of the air bag 31, and a plurality of projecting portions 32 a projecting downward are provided on the lower surface of the base member 32. Each protrusion 32a is provided with a vent hole in the same manner as the lower end protrusion 11d. The lower end surface of the air bag 31 is fixed to the upper surface of the base member 32 with an adhesive or the like. The protruding portion 32a is provided with an air passage (not shown) similar to the air passage 12e penetrating from the outer peripheral surface to the vent hole as necessary. Each air pipe P1, P2, P3, P4, P5, P6 described later can be inserted into this air passage.

  Each front end side support member 40 consists of sponge-like members, such as urethane foam, and the inclined surface 40a is formed in the front end side. The front end side support members 40 are spaced from each other in the width direction of the seating surface, and support the thighs of the seated person. Each of the front end side support members 40 has a size in the width direction of the seating surface that is larger than a size in the front-rear direction, and has a size larger in the width direction of the seating surface than the first air cell 10. That is, the front end side support member 40 has higher rigidity in the width direction of the seating surface than the first air cell 10.

  The central support member 50 has an air bag 51 formed so that the lower end is opened and extended upward, and a base member 52 that closes the lower end of the air bag 51.

  The air bag 51 is made of a flexible material such as soft rubber or plastic, and can enclose air therein. The size of the seat 51 in the front-rear direction is larger than the size in the width direction, and the width of the air bag 51 gradually increases from the rear end side to the front end side of the seating surface. Further, the height of the air bladder 51 gradually increases from the rear end side to the front end side of the seating surface. The air bag 51 is formed in a thin film shape that is slightly thicker than the air bag 11, and has a larger dimension in the front-rear direction of the seating surface than the air bag 11. That is, the air bag 51 has higher rigidity in the front-rear direction of the seating surface than the air bag 11.

  The base member 52 is made of rubber or plastic that is harder than the material of the air bladder 51, and a plurality of protruding portions 52 a that protrude downward are provided on the lower surface of the base member 52. Each protrusion 52a is provided with a vent hole in the same manner as the lower end protrusion 11d. The lower end surface of the air bag 51 is fixed to the upper surface of the base member 52 with an adhesive or the like. The protrusion 52a is provided with an air passage (not shown) similar to the air passage 12e penetrating from the outer peripheral surface to the vent hole as necessary. Each air pipe P1, P2, P3, P4, P5, P6 described below can be inserted into this air passage.

  The support member 60 is made of rubber or plastic harder than the material of the air bag 11 and has a flat plate shape having an area substantially equal to the seating surface. That is, the support member 60 is formed to extend along the seating surface. The support member 60 is provided with a plurality of through holes 61, and the lower end side protruding portion 12 d of the first air cell 10, the second air cells 20, 30, and the protruding portions 22 a, 32 a, 52 a of the central support member 50 are respectively formed in the through holes 61. When inserted from the upper end surface side of the support member 60, the lower end side projecting portion 12d and the projecting portions 22a, 32a, 52a are fitted into the through holes 61, and the lower end sides of the air cells 10, 20, 30 and the central support member 50 are The support member 60 is detachably supported. Each front end side support member 40 has a lower end surface fixed to the upper surface of the support member 60 with an adhesive or the like. Further, when the lower end side protruding portion 12d and the protruding portions 22a, 32a, and 52a are fitted into the through holes 61, the lower end side protruding portion 12d and the protruding portions 22a, 32a, and 52a protrude to the lower surface side of the support member 60, and air Air passages provided in the passage 12e and the protruding portions 22a, 32a, and 52a are also arranged on the lower surface side of the support member 60.

  A well-known electric pump 70 capable of supplying compressed air, well-known first to seventh solenoid valves 81, 82, 83, 84, 85, 86, 87, and a flexible first are provided on the lower surface of the support member 60. First to sixth air pipes P1, P2, P3, P4, P5, P6, a control device 90, well-known first and second pressure sensors 91 and 92, and flexible electric wiring (not shown) are provided. Yes. Here, the electric pump 70, the electromagnetic valves 81, 82, 83, 84, 85, 86, 87, the control device 90, and the pressure sensors 91, 92 are air pressures in the air cells 10, 20, 30 and the central support member 50. Is a device for adjusting air pressure described in the claims.

  A hollow portion 62 is provided on the lower surface on the front end side of the seating surface of the support member 60, and the electric pump 70, the electromagnetic valves 81, 82, 83, 84, 85, 86, 87, the control device 90, and Each pressure sensor 91, 92 is arranged. The hollow portion 62 is provided by forming the lower surface of the support member 60 in a concave shape, and the hollow portion 62 is disposed below each front end side support member 40. Further, a plurality of rubber blocks 63 are provided in the hollow portion 62, and the electric pump 70, the electromagnetic valves 81, 82, 83, 84, 85, 86, 87 and the pressure sensors 91, 92 are included in each rubber block 63. It is detachably attached to the lower surface of the support member 60 by being fitted between them (see FIG. 8). The control device 90 is fixed in a hollow protective member 90a, and the protective member 90a is detachably attached to the lower surface of the support member 60 by being fitted in the hollow portion 62 (see FIGS. 10 and 11). The protection member 90a has a flat plate-like top plate portion 90b formed so as to extend in the horizontal direction, and a flat plate-like side surface portion 90c formed so as to extend downward from both side surfaces of the top plate portion 90b. . That is, the lower surface side of the top plate portion 90b and the space between the side surface portions 90c are hollow, and the control device 90 is disposed in the hollow portion. Each side surface portion 90c is formed to extend in the width direction of the seating surface, and the lower surface of each side surface portion 90c is formed in a convex shape. The control device 90 includes a well-known CPU and control board. That is, since the control device 90 is accommodated in the protection member 90a, the control device 90 is protected from a large load applied by the weight of the seated person.

  The control device 90 is connected to the electric pump 70, the electromagnetic valves 81, 82, 83, 84, 85, 86, 87 and the pressure sensors 91, 92 by electric wiring (not shown). The first air cells 10, the second air cells 20, 30, the central support member 50, the electric pump 70, the electromagnetic valves 81, 82, 83, 84, 85, 86, 87 and the pressure sensors 91, 92 are mutually connected. The air pipes P1, P2, P3, P4, P5, and P6 are connected (see FIG. 13).

  Specifically, the first air pipe P <b> 1 connects the electric pump 70, the first electromagnetic valve 81, the second electromagnetic valve 82, and the central support member 50, and connects the central support member 50 and the first pressure sensor 91. Further, the central support member 50 and the four first air cells 10 are connected. The four first air cells 10 form the rear end of the first air cell group.

  The second air pipe P <b> 2 connects nine first air cells 10 among the first electromagnetic valve 81, the third electromagnetic valve 83, the fifth electromagnetic valve 85, and each first air cell 10. The nine first air cells 10 are group A.

  The third air pipe P <b> 3 connects ten first air cells 10 among the second electromagnetic valve 82, the fourth electromagnetic valve 84, the sixth electromagnetic valve 86, and the first air cells 10. The ten first air cells 10 are set as a B group. The first air cells 10 of the A group and the B group include the first air cells 10 in the second to fifth rows from the rear end side of the seating surface.

  The fourth air pipe P4 connects the third solenoid valve 83, the fourth solenoid valve 84, the seventh solenoid valve 87, each rear end side second air cell 30 and the second pressure sensor 92.

  The fifth air pipe P5 connects the fifth electromagnetic valve 85, the four first air cells 10 of the first air cells 10, and the left front end side second air cell 20. The four first air cells 10 form the left side and the front end side of the first air cell group.

  The sixth air pipe P <b> 6 connects the sixth electromagnetic valve 86, four first air cells 10 among the first air cells 10, and the right front end side second air cell 20. The four first air cells 10 form the right side and the front end side of the first air cell group.

  The control device 90 controls the electric pump 70 and the electromagnetic valves 81, 82, 83, 84, 85, 86, and 87 based on the detection results and operation times of the pressure sensors 91 and 92. In addition, after the seated person is seated, the first air pressure of the A group and the air pressure within the B group are changed at predetermined time intervals to prevent congestion caused in the buttocks of the seated person.

  The cushion configured as described above is used by being placed on a seating surface of a wheelchair, for example. When a seated person sits on a wheelchair with the air pumps 10, 20, and 30 and the central support member 50 filled with a predetermined air pressure by the electric pump 70, the air in each air cell 10, 20, and 30 It moves through P1, P2, P3, P4, P5 and P6, and the pressure applied to the seated person's buttocks is dispersed.

  Here, since a plurality of first air cells 10 are provided for supporting the vicinity of the seat bone and the tailbone of the seated person, the air pressure in each first air cell 10 is changed to the electric pump 70 or the like after the seated person is seated. By adjusting with the air pressure adjusting device, the pressure applied in the vicinity of the seat bone and the tailbone of the seated person is dispersed. Each of the second air cells 20 and 30 is provided on both sides in the width direction of the first air cell group, and each of the second air cells 20 and 30 includes air bags 21 and 31 extending upward. Even when the collar part of the collar part is large and the side surface side of the collar part is positioned outside in the width direction from the first air cell group, the side surface side of the collar part is softly supported by the second air cells 20, 30, and the air pressure in each second air cell 20, 30 is Is adjusted by each air pressure adjusting device, the second air cells 20 and 30 adjust the force for supporting the side surface side of the collar portion. Therefore, the pressure applied to the seated person's buttocks can always be efficiently dispersed.

  The second air cells 20 and 30 are provided on both sides in the width direction of the first air cell group. The second air cells 20 and 30 have an area three times larger than that of the first air cell 10 in plan view and are seated. Since the dimension in the front-rear direction of the surface is larger than the dimension in the width direction, the number of air cells can be reduced and the manufacturing cost can be reduced as compared with the case where the first air cells 10 are provided to both sides of the support member 60 in the width direction. It is extremely advantageous for achieving this. In the present embodiment, the air bags 21 and 31 of the second air cells 20 and 30 are formed so as to have an area three times larger than that of the air bag 11 of the first air cell 10 in plan view. When the bags 21 and 31 have an area 1.5 times or more in plan view with respect to the air bag 11, it is effective in reducing the manufacturing cost. Further, when each air bag 21, 31 has an area of 1.5 times or more in plan view with respect to the air bag 11, the horizontal rigidity of each air bag 21, 31 is the horizontal rigidity of the air bag 11. More likely to be higher.

  In addition, since a plurality of air pressure adjusting devices such as the electric pump 70 are attached to the lower surface of the support member 60 in order to adjust the air pressure in each air cell 10, 20, 30 and the central support member 50, each air cell 10, The pneumatic pressure adjusting devices can be mounted in the support member 60 that supports the lower end sides of the 20, 30 and the central support member 50.

  In addition, each air pressure adjusting device is attached to the lower surface of the support member 60, and each air pressure adjusting device is connected to each other by flexible electrical wiring or air piping P1, P2, P3, P4, P5, P6. Therefore, each air pressure adjusting device is composed of a non-flexible device such as the electric pump 70, and the flexibility (for example, the portion of the support member 60 other than the portion where each air pressure adjusting device is mounted (for example, Since the flexibility of the support member 60 between each air pressure adjusting device is not lost, each air pressure adjusting device is housed and integrated in a single operation box, and the operation box is supported. Compared with the case of attaching to the member 60, the area of the portion where flexibility is lost can be reduced.

  Thus, according to this embodiment, since each air pressure adjusting device can be arranged in the support member 60 that supports the lower end side of each air cell 10, 20, 30 and the central support member 50, each air pressure adjustment The handling of the cushion becomes easier as compared with the case where the appliance is provided separately from the cushion.

  Further, each air pressure adjusting device is housed and integrated in a single operation box, and the area of the portion where flexibility is lost is reduced as compared with the case where the operation box is attached to the support member 60. Therefore, the flexibility of the support member 60 can be maintained as much as possible. For example, when the cushion is placed on a seating surface that is appropriately curved according to the weight of the seated person, the support member 60 is deformed along the seating surface. It is extremely advantageous for stabilizing the cushion on the seating surface.

  Further, since the support member 60 is formed so that each air pressure adjusting device is fitted and attached to the lower surface, each air pressure adjusting device can be easily attached to and detached from the support member 60, and repair of each air pressure adjusting device is possible. It is extremely advantageous for cleaning and cleaning, and is also advantageous for reducing the manufacturing cost of the cushion.

  Moreover, since the hollow protective member 90a which accommodates and protects the control apparatus 90 inside is provided among each air pressure adjusting device, and the support member 60 is formed so that the protective member 90a is fitted and attached, the seated person Even when the body weight is applied to the front end side of the support member, a large load is not applied to the control device 90, which is advantageous in improving the durability of low-strength parts such as the control device 90. Furthermore, since the support member 60 is formed so that the protective member 90a is fitted and attached, the control device 90 can be easily attached and detached.

  Further, since the lower end of each side surface portion 90c of the protection member 90a is formed in a convex shape, when the seating surface of the wheelchair is curved due to the weight of the seated person, the lower end of the protection member 90a can be along the seating surface, It is prevented that the contact pressure between the lower end of the protective member 90a and the seating surface of the wheelchair increases locally.

  Further, since each air pressure adjusting device is attached to the lower surface on the front end side of the support member 60, each air pressure adjusting device may be provided below each first air cell 10 that supports the seat bone and the tailbone of the seated person. Absent. That is, the height dimension of each first air cell can be increased as much as possible, which is extremely advantageous in softly supporting the vicinity of the ischia and coccyx.

  Further, each air pressure adjusting device is mounted in the hollow portion 62, and the hollow portion 62 is disposed below each front end side support member 40, so that each air pressure adjusting device is provided below each first air cell 10. There is nothing. That is, the height dimension of each first air cell can be increased as much as possible, which is extremely advantageous in softly supporting the vicinity of the ischia and coccyx.

  In the present embodiment, each air pressure adjusting device is attached to the lower surface on the front end side of the support member 60. However, each air pressure adjusting device is attached to the lower surface on the width direction end portion side of the support member 60. Is also possible. For example, each air pressure adjusting device can be attached to the lower surface of the support member 60 so as to be disposed below each second air cell 20, 30. In this case as well, each air pressure adjusting device is not provided below each first air cell 10, which is extremely advantageous in softly supporting the vicinity of the ischia and tailbone.

  Further, in the present embodiment, each pneumatic pressure adjusting device is attached to the lower surface of the support member 60. However, it is also possible to attach each pneumatic pressure adjusting device to the upper surface of the support member 60. It is also possible to attach the interior of 60.

  In the present embodiment, the first air cell 10, the second air cells 20, 30, the front end side support members 40 and the center support member 50 are attached to the support member 60. It is also possible to provide only the first air cell 10 over the entire surface and attach each air pressure adjusting device to the lower surface of the support member 60. Even in this case, each air pressure adjusting device is attached to the front end side of the support member 60 or the width direction end portion side of the support member 60 to ensure the height of the first air cell 10 that supports the vicinity of the ischia and the tailbone. be able to.

  In this embodiment, the electric pump 70, the electromagnetic valves 81, 82, 83, 84, 85, 86, 87, the control device 90, and the pressure sensors 91, 92 are attached to the lower surface of the support member 90, respectively. For example, the electric pump 70 and the electromagnetic valves 81, 82, 83, 84, 85, 86, and 87 are accommodated in the first box to form the first unit, and the control device 90 and each pressure The sensors 91 and 92 can be accommodated in the second box to form a second unit, and each unit can be attached to the lower surface of the support member 60, and the units can be connected by electrical wiring and air piping. . In this case, each unit corresponds to an air pressure adjusting device described in the claims.

  Moreover, in this embodiment, although each 1st air cell 10 and each 2nd air cell 20 and 30 showed what supported the collar part with the air pressure, for example, on the upper surface of the base member 12 in each 1st air cell 10 It is also possible to provide a cushioning member 14 made of a sponge-like member such as urethane foam, and to support the collar part by air pressure when the amount of collapse is small, and to support the collar part by the elasticity of the air pressure and buffer member 14 when the amount of collapse is large. Yes (see FIG. 14). In this case, the upper end surface 11b of the air bag 11 of the first air cell 10 is not in direct contact with the base member 12, which is extremely advantageous for softly supporting the flange portion. It is also possible to provide a buffer member in each second air cell 20, 30. Furthermore, the buffer member 14 can be formed of a plurality of granular members such as a plurality of plastic beads, a plurality of buckwheat husks, and sand.

Side surface sectional drawing of the air cell which shows one Embodiment in this invention Air cell perspective view Perspective view of base member Side sectional view of the main part of the cushion Top view of cushion Bottom view of cushion PP sectional view in FIG. QQ line sectional view in FIG. RR line sectional view in FIG. SS sectional view in FIG. RR line sectional view in FIG. 5 before attaching the protective member and the control device to the support member TT line sectional view in FIG. Cushion bottom view showing air passage configuration Side surface sectional drawing of the 1st air cell which shows the modification of this embodiment

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... 1st air cell, 11 ... Air bag, 12 ... Base member, 13 ... Holding member, 14 ... Buffer member, 20 ... Front end side 2nd air cell, 21 ... Air bag, 22 ... Base member, 30 ... Rear end side 1st 2 air cells, 31 ... air bag, 32 ... base member, 40 ... front end side support member, 40a ... inclined surface, 50 ... center support member, 51 ... air bag, 52 ... base member, 60 ... support member, 61 ... through hole , 62 ... hollow part, 63 ... rubber block, 70 ... electric pump, 81 ... first electromagnetic valve, 82 ... second electromagnetic valve, 83 ... third electromagnetic valve, 84 ... fourth electromagnetic valve, 85 ... fifth electromagnetic valve 86 ... Sixth solenoid valve, 87 ... Seventh solenoid valve, 90 ... Control device, 90a ... Protection member, 90b ... Top plate part, 90c ... Side face part, 91 ... First pressure sensor, 92 ... Second pressure sensor, P1 ... 1st air piping, P2 ... 2nd air piping, P3 ... 3rd empty Piping, P4 ... fourth air pipe, P5 ... fifth air pipe, P6 ... sixth air pipe.

Claims (2)

In the cushion that is placed on a predetermined seating surface and supports the buttocks of the seated person,
A plurality of first air cells which are provided so as to be aligned with each other in the front-rear direction and the width direction of the seating surface, and which respectively extend upward, and support the vicinity of the seatbone and the tailbone of the seated person;
Each air bag is provided on both sides in the width direction of the seating surface with respect to the first air cell group composed of each first air cell, and each air bag extends upward, and each air bag is air in the first air cell in plan view. A plurality of second air cells having an area of 1.5 times or more of the bag, and the front and rear dimension of the seating surface of each air bag is larger than the width dimension;
A front end side support member that is provided on the front end side of the seating surface with respect to the first air cell group, is composed of a spongy member, and supports the vicinity of the thigh of the seated person,
A flexible support member that is formed so as to extend along the seating surface, and supports each air cell and the lower end side of the front end side support member;
Each corresponds to an electric pump, a solenoid valve, and a control device, and includes a plurality of devices for adjusting air pressure provided to adjust air pressure in each air cell,
Each air pressure adjusting device is attached to the support member so as to be disposed below each second air cell and / or below the front end side support member.
Cushion characterized by that. In the cushion that is placed on a predetermined seating surface and supports the buttocks of the seated person,
A plurality of first air cells which are provided so as to be aligned with each other in the front-rear direction and the width direction of the seating surface, and which respectively extend upward, and support the vicinity of the seatbone and the tailbone of the seated person;
Each air bag is provided on both sides in the width direction of the seating surface with respect to the first air cell group composed of each first air cell, and each air bag extends upward, and each air bag is air in the first air cell in plan view. A plurality of second air cells having an area of 1.5 times or more of the bag, and the front and rear dimension of the seating surface of each air bag is larger than the width dimension;
A front end side support member that is provided on the front end side of the seating surface with respect to the first air cell group, is composed of a spongy member, and supports the vicinity of the thigh of the seated person,
A flexible support member that is formed so as to extend along the seating surface, and supports each air cell and the lower end side of the front end side support member;
Each of which includes at least one of an electric pump, a solenoid valve, and a control device in a box, and includes a plurality of air pressure adjusting devices provided to adjust the air pressure in each air cell;
Each air pressure adjusting device is attached to the support member so as to be disposed below each second air cell and / or below the front end side support member.
Cushion characterized by that.

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