JP2008093192A - Posture change auxiliary apparatus and chair - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To incline a seat surface without giving a sitter a sense of discomfort. <P>SOLUTION: When more air is supplied for airbags 40A and 40B than for airbags 40C and 40D, a plate member 20A mounted on the airbags 40A to 40D becomes higher on the side of the airbags 40A and 40B than on the side of the airbags 40C and 40D. When the sides of the airbags 40A and 40B become higher, a position of a hip part of the sitter becomes higher than that of the knees, so that the sitter comes to take a forward-bent posture. When more air is supplied for the airbags 40C and 40D than for the airbags 40A and 40B, the plate member 20A mounted on the airbags 40A to 40D becomes higher on the side of the airbags 40C and 40D than on the side of the airbags 40A and 40B. When the sides of the airbags 40C and 40D become higher, a position of the knee part of the sitter becomes higher than that of the hip part, so that the sitter comes to take a backward-bent posture. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a technique for changing a posture of a seated person.

In order to prevent fatigue, pressure ulcers, and congestion in the vicinity of the sciatic bone caused by sitting for a long time, it is effective to move the muscles by changing the posture of the seated person or to change the place where pressure is applied in the body. However, although it is easy for a healthy person to change the posture, it is difficult for a disabled person or a person with weak muscles to change his / her posture freely when sitting. Therefore, when seated, it has an airbag that supports the occupant's buttocks, an airbag that supports the thigh from the buttock, and an airbag that supports the thigh from the knee, and adjusts the amount of air in these airbags By doing so, a device that makes it easy to change the posture of a seated person has been devised (see Patent Document 1).
In this device, the amount of air in the airbag that supports the buttocks is increased, while if the amount of air in the airbag that supports the thighs from the knee is decreased, the buttocks side is lifted and the knee side is lowered. This makes it possible for the seated person to take a forward leaning posture without using force. Also, while reducing the amount of air in the airbag that supports the buttocks, increasing the amount of air in the airbag that supports the thighs from the knees, the buttocks side is lowered and the knee side is lifted. It is possible to make the seated person take a backward leaning posture without letting it go.

JP 2000-350641 A

  Now, according to the apparatus disclosed in Patent Document 1, it is possible to make a seated person take a forward leaning posture or a backward leaning posture by adjusting the air amount of each airbag. However, in this apparatus, when the inclination of the seating surface is increased, the size of the airbag becomes uneven, and the seating surface becomes uneven. And when unevenness | corrugation arises in a seating surface, the pressure of the part which touches a level | step difference will become high and the problem that a seating comfort will worsen will arise.

  The present invention has been made under the above-described background, and an object thereof is to incline the seating surface without causing discomfort to the seated person.

  In order to solve the above-described problems, the present invention provides a plate-like first member, a plate-like second member facing the first member, and a plate-like shape between the first member and the second member. The other part is fixed to the second member, and the first member and the second member are connected so as to be separated and proximate, Between the first member and the connecting member having a smaller area than the second member, and between the first member and the second member, the connecting member is disposed at a position where the first member and the second member are not located. Provided is a posture change assisting device having a plurality of bag-like bags that expand and contract according to the amount, and a control means for controlling the amount of fluid in the plurality of bags. Moreover, this invention provides the chair provided with the said attitude | position change auxiliary device.

  In this configuration, the connecting member connects the first flat portion in a strip shape, the second flat portion in a strip shape parallel to the first flat portion, and the first flat portion and the second flat portion. And the first flat part is fixed to the first member, and a part of the second flat part is fixed to the second member so as to bend according to the force applied from the outside. Good. The connecting member may be formed by laminating a plurality of members of the same type. The plurality of members may not be fixed to each other. The control means may individually increase or decrease the amount of fluid in each of the plurality of bags as time passes.

  According to the present invention, the seating surface can be tilted without causing discomfort to the seated person.

[Configuration of the embodiment]
First, the configuration of the posture change assisting apparatus 1 according to an embodiment of the present invention will be described. FIG. 1 is an external view of the posture change assisting device 1. The posture change assisting device 1 is roughly divided into a seating portion 2 and an operating portion 3 that operates the seating portion 2 as shown in FIG. The seating portion 2 of the posture change assisting device 1 is placed on the seat surface of the chair and changes the posture of the seated person seated on the seating portion 2.

  2B is a top view of the seating portion 2, FIG. 2A is a left side view of the seating portion 2, and FIG. 2C is a right side view of the seating portion 2. FIG. As shown in FIGS. 2A to 2C, the seating portion 2 includes plate-like members 20A and 20B, a connecting member 30, four airbags 40A to 40D, and the connecting portion 30 as the plate-like member 20A. It is comprised by the external thread 50A-50D for fixing to 20B.

  The plate-like members 20A and 20B are rectangular members made of duralumin. A hole 60A and a hole 60B are provided at the front corner of the plate-like member 20A, and a female screw 61C and a female screw 61D are provided at the rear corner. Further, female screws 61A and female screws 61B are provided at the front corners of the plate-like member 20B, and holes 60C and 60D are provided at the rear corners. In this embodiment, the plate-like members 20A and 20B are made of duralumin. However, the material is not limited to duralumin, and it is lightweight, has high strength, and can be easily bent. For example, other materials such as other metals, plastics, FRP (Fiberglass Reinforced Plastics) may be used.

  As shown in FIG. 3B, the connecting member 30 is configured by laminating ten H-shaped connecting members 30-1 to 30-10. In the present embodiment, the connecting members 30-1 to 30-10 are made of stainless steel, and are not fixed to each other but remain stacked. In the following description, the parallel portions in the connecting member 30 are referred to as parallel portions 30A and 30B, and the portions connecting the parallel portions are referred to as connecting portions 30C. A hole 31 that penetrates the connecting member is provided at the end of each parallel portion.

  The airbags 40A to 40D are made of plastic, and the shape thereof is rectangular and bag-shaped. Connected to the airbags 40A to 40D are hoses 70A to 70D for allowing air to flow into the airbag and hoses 80A to 80D for discharging the air in the airbag. By using these hoses to supply air into the air bag or to discharge air from the air bag, each air bag expands and contracts. In the present embodiment, the airbags 40A to 40D are rectangular when viewed from above, but the shape of the airbags 40A to 40D is not limited to a rectangle, for example, a circular shape, a donut shape, Other shapes such as an ellipse may be used. In addition, the air bag may be made of a material other than plastic, such as polyurethane, vinyl chloride, rubber, or fiber, as long as the air does not leak inside. When the airbag is formed of rubber, the airbag may be stored in a bag made of cloth. According to this aspect, since the expansion of the airbag is limited, the airbag can be prevented from rupturing.

  When assembling the seat portion 2 by combining the plate-like members 20A and 20B, the connecting member 30, and the four airbags 40A to 40D, the connecting member 30 is first placed on the plate-like member 20B. Here, when mounting the connecting member 30, the holes 31 of the parallel portion 30A of the connecting member 30 are overlapped so as to communicate with the holes of the female screws 61A and 61B of the plate-like member 20B. Then, the plate-like member 20 </ b> A is placed on the connecting member 30. Here, when placing the plate-like member 20 </ b> A, the holes of the female screws 61 </ b> C and 61 </ b> D of the plate-like member 20 </ b> A are overlapped so as to communicate with the holes 31 of the parallel portion 30 </ b> B of the connecting member 30.

And male screw 50A, 50B is inserted in the hole 31 of 30 A of parallel parts from the plate-shaped member 20A side. The male screw 50A inserted into the hole 31 and passing through the parallel part 30A is fitted into the female screw 61A of the plate-like member 20B, and the male screw 50B inserted into the hole 31 and passed through the parallel part 30A is fitted into the female screw 61B of the plate-like member 20B. Combined. Thereby, the parallel part 30A is fixed to the plate-like member 20B.
Next, male screws 50C and 50D are inserted into the holes 31 of the parallel portion 30B of the connecting member 30 from the plate-like member 20B side. The male screw 50C inserted into the hole 31 and passing through the parallel part 30B is fitted into the female screw 61C of the plate-like member 20A, and the male screw 50D inserted into the hole 31 and passed through the parallel part 30B is fitted into the female screw 61D of the plate-like member 20B. Combined. Thereby, the parallel part 30B is fixed to the plate-shaped member 20A.
Here, the connecting member 30 is sandwiched between the plate-like members 20A and 20B, the parallel portion 30A is fixed to the plate-like member 20B, and the parallel portion 30B is fixed to the plate-like member 20A. A portion where the connecting member 30 is not provided between the plate-like member 20A and the plate-like member 20B is a gap, and the seats 2 are formed by inserting the airbags 40A to 40D into the gap portion.

  Next, the structure of the action | operation part 3 is demonstrated. FIG. 4 is a block diagram showing the configuration of the operating unit 3. As shown in the figure, the operation unit 3 connects the control unit 110, the operation unit 120, the air pump 130, the electromagnetic valves 140A to 140D, the electromagnetic valves 150A to 150D, the air pump 130 and the airbags 40A to 40D, and It has hoses 70A to 70D for supplying air into the bag and hoses 80A to 80D for discharging air in the airbag. Moreover, although the action | operation part 3 is not illustrated in the figure, it has a power supply for operating an action | operation part.

  The operation unit 120 includes a switch SW operated by a seated person, keys K 1 and K 2, and an operation lever L, and is connected to the control unit 110. The switch SW is a slide switch for supplying power from a power source (not shown) to the control unit 110, the operation unit 120, the air pump 130, the electromagnetic valves 140A to 140D, and the electromagnetic valves 150A to 150D, and the slider SL slides to the OFF side. If it is made, supply of the electric power from a power supply to each part will be interrupted, and if the slider SL is slid to the ON side, the electric power from the power supply is supplied to each part. The key K1 is a key operated when the plate member 20A is raised, and the key K2 is a key operated when the plate member 20A is lowered. When the keys K1 and K2 are pressed by a seated person, a signal indicating that the keys are pressed is output to the control unit 110. The operation lever L is a lever for inclining the plate-like member 20A, and can be inclined in four directions of “front”, “rear”, “left”, and “right”. When the operation lever L is tilted in any of the four directions, it outputs a signal indicating the tilted direction to the control unit 110.

  The control unit 110 is a so-called one-chip microcomputer having a CPU (Central Processing Unit) 111, a ROM (Read Only Memory) 112 storing a control program, and a RAM (Random Access Memory) 113, and is stored in the ROM 112. Run the control program. When the control program is executed in the control unit 110, the posture change assisting device 1 realizes a function of adjusting the air amount in the airbags 40 </ b> A to 40 </ b> D according to the operation performed on the keys and levers provided in the operation unit 120.

  The air pump 130 performs exhaust and intake of air. The air pump 130 includes hoses 70A and 80A connected to the airbag 40A, hoses 70B and 80B connected to the airbag 40B, hoses 70C and 80C connected to the airbag 40C, and a hose 70D connected to the airbag 40D. , 80D are connected. Under control of the control unit 110, the air pump 130 supplies air to the airbags 40A to 40D via the hoses 70A to 70D to inflate each airbag. The air pump 130 draws in air in the airbags 40A to 40D via the hoses 80A to 80D, and contracts each airbag.

  Solenoid valves 140A-140D are provided in hoses 70A-70D, and control the flow of air inside hoses 70A-70D under the control of control unit 110. The electromagnetic valves 150A to 150D are provided in the hoses 80A to 80D, and control the flow of air inside the hoses 80A to 80D under the control of the control unit 110.

[Operation of the embodiment]
Next, the operation when the seating part 2 of the posture change assisting apparatus 1 is placed on the chair 5 as shown in FIG. 5 and each part of the operation part 120 is operated will be described. First, when the slider SL of the switch SW is slid from the OFF side to the ON side, power is supplied from the power source to the control unit 110, the operation unit 120, the air pump 130, the electromagnetic valves 140A to 140D, and the electromagnetic valves 150A to 150D. Then, the control program stored in the ROM 112 is executed in the control unit 110.

  The control unit 110 that has executed the control program first controls the electromagnetic valves 140A to 140D to block the air flow in the hoses 70A to 70D. In addition, the control unit 110 controls the solenoid valves 150A to 150D to communicate the insides of the hoses 80A to 80D so that air flows from the airbags 40A to 40D to the air pump 130.

  Next, the control part 110 controls the air pump 130, and inhales the air in airbag 40A-40D via hose 80A-80D. When the air in the airbags 40A to 40D is inhaled by the air pump 130, the airbags 40A to 40D contract, and as shown in FIG. 5, the plate member 20A, the connecting member 30, and the plate member 20B are , Each stacked in parallel.

(Operation when key K1 is operated)
In the state shown in FIG. 5, when a seated person sitting on the plate-like member 20A operates the key K1, the control unit 110 first controls the electromagnetic valves 150A to 150D, and the air flow in the hoses 80A to 80D. Shut off. Further, the control unit 110 controls the solenoid valves 140A to 140D to communicate the insides of the hoses 70A to 70D so that air flows from the air pump 130 to the airbags 40A to 40D.

  Next, the control unit 110 controls the air pump 130 to supply air into the airbags 40A to 40D via the hoses 70A to 70D. When air is supplied from the air pump 130 toward the airbags 40A to 40D, the air flow in the hoses 80A to 80D is blocked, so the airbags 40A to 40D are caused by the air supplied into the airbag. Inflate as shown in FIG. When the airbags 40A to 40D are inflated, the plate-like member 20A rises in parallel with the plate-like member 20B, and the seated person sitting on the plate-like member 20A rises as the plate-like member 20A rises.

  When the control unit 110 controls the air pump 130 to supply a predetermined amount of air into the airbags 40A to 40D, the control unit 110 controls the electromagnetic valves 140A to 140D and shuts off the air flow in the hoses 70A to 70D. 130 is stopped. Here, since the air flows in the hoses 70A to 70D and the hoses 80A to 80D are blocked by the electromagnetic valves 140A to 140D and the electromagnetic valves 150A to 150D, the airbags 40A to 40D remain inflated. The state shown in FIG. 6 is maintained.

(Operation when key K2 is operated)
Next, an operation when the key K2 is operated in the state shown in FIG. 6 will be described. In the state shown in FIG. 6, when the seated person operates the key K2, the control unit 110 first controls the solenoid valves 150A to 150D so that air flows from the airbags 40A to 40D to the air pump 130. -80D communicates inside. Next, the control part 110 controls the air pump 130, and inhales the air in airbag 40A-40D via hose 80A-80D. When the air in the airbags 40A to 40D is sucked by the air pump 130, the airbags 40A to 40D contract. When the airbags 40A to 40D contract, the plate-like member 20A descends while staying parallel to the plate-like member 20B, and the seated person sitting on the plate-like member 20A also descends as the plate-like member 20A descends. When the control unit 110 controls the air pump 130 to discharge air from the airbags 40A to 40D, the control unit 110 stops the air pump 130.

(Operation when the control lever is tilted forward)
Next, an operation when the operation lever L is tilted to the “front” side from the state shown in FIG. 5 will be described. In the state shown in FIG. 5, when the seated person tilts the operation lever L to the “front” side, the control unit 110 first controls the electromagnetic valves 140 </ b> A to 140 </ b> D so that air flows from the air pump 130 to each airbag. The hoses 70A to 70D communicate with each other. Moreover, the control part 110 controls electromagnetic valve 150A-150D, and interrupts | blocks the flow of the air in hose 80A-80D. Next, the control unit 110 controls the air pump 130 to supply air into the airbags 40A to 40D via the hoses 70A to 70D. Thereby, each airbag begins to inflate.

  When a predetermined amount of air is supplied to each airbag, the control unit 110 controls the electromagnetic valves 140C and 140D and blocks the air flow in the hoses 70C and 70D. Thereby, the supply of air to the airbags 40C and 40D is stopped, and the inflation of the airbags 40C and 40D is stopped. Thereafter, when the control unit 110 continues to supply air to the airbags 40A and 40B and supplies a predetermined amount of air to the airbags 40A and 40B, the control unit 110 controls the electromagnetic valves 140A and 140B, and the hoses 70A and 70B. Shut off the air flow inside. Thereby, the supply of air to the airbags 40A and 40B is also stopped, and the inflation of the airbags 40A and 40B is also stopped.

  Here, since more air is supplied to the airbags 40A and 40B than the airbags 40C and 40D, the amount of expansion is larger than that of the airbags 40C and 40D, and the plates placed on the airbags 40A to 40D. In the shape member 20A, the airbags 40A and 40B are higher than the airbags 40C and 40D. When the airbag 40A, 40B side is raised, as shown in FIG. 7, the position of the buttocks of the seated person becomes higher than the position of the knee of the seated person, and the seated person takes a forward leaning posture.

(Operation when the control lever is tilted back)
Next, the operation when the operation lever L is tilted to the “rear” side from the state shown in FIG. 5 will be described. In the state shown in FIG. 5, when the seated person tilts the operation lever L to the “rear” side, the control unit 110 first controls the electromagnetic valves 140 </ b> A to 140 </ b> D so that air flows from the air pump 130 to each airbag. The hoses 70A to 70D communicate with each other. Moreover, the control part 110 controls electromagnetic valve 150A-150D, and interrupts | blocks the flow of the air in hose 80A-80D. Next, the control unit 110 controls the air pump 130 to supply air into the airbags 40A to 40D via the hoses 70A to 70D. Thereby, each airbag begins to inflate.

  When a predetermined amount of air is supplied to each airbag, the control unit 110 controls the electromagnetic valves 140A and 140B to block the air flow in the hoses 70A and 70B. Thereby, the supply of air to the airbags 40A and 40B is stopped, and the inflation of the airbags 40A and 40B is stopped. Thereafter, when the control unit 110 continues to supply air to the airbags 40C and 40D and supplies a predetermined amount of air to the airbags 40C and 40D, the control unit 110 controls the electromagnetic valves 140C and 140D, and the inside of the hoses 70C and 70D. Block the air flow. Thereby, the supply of air to the airbags 40C and 40D is also stopped, and the inflation of the airbags 40C and 40D is also stopped.

  Here, since more air is supplied to the airbags 40C and 40D than the airbags 40A and 40B, the amount of expansion is larger than that of the airbags 40A and 40B, and the plates placed on the airbags 40A to 40D. The shaped member 20A is higher on the airbag 40C, 40D side than on the airbag 40A, 40B side. When the airbag 40C, 40D side is raised, as shown in FIG. 8, the position of the knee of the seated person becomes higher than the position of the buttocks of the seated person, and the seated person takes a tilted posture.

(Operation when the control lever is tilted to the right)
Next, an operation when the operation lever L is tilted to the “right” side from the state shown in FIG. 5 will be described. In the state shown in FIG. 5, when the seated person tilts the operation lever L to the “right” side, the control unit 110 first controls the electromagnetic valves 140A to 140D so that air flows from the air pump 130 to each airbag. The hoses 70A to 70D communicate with each other. Moreover, the control part 110 controls electromagnetic valve 150A-150D, and interrupts | blocks the flow of the air in hose 80A-80D. Next, the control unit 110 controls the air pump 130 to supply air into the airbags 40A to 40D via the hoses 70A to 70D. Thereby, each airbag begins to inflate.

  When a predetermined amount of air is supplied to each airbag, the control unit 110 controls the electromagnetic valves 140A and 140C and blocks the air flow in the hoses 70A and 70C. Thereby, the supply of air to the airbags 40A and 40C is stopped, and the inflation of the airbags 40A and 40C is stopped. Thereafter, when the controller 110 continues to supply air to the airbags 40B and 40D and supplies a predetermined amount of air to the airbags 40B and 40D, the controller 110 controls the electromagnetic valves 140B and 140D, and the hose 70B and 70D Block the air flow. Thereby, the supply of air to the airbags 40B and 40D is also stopped, and the inflation of the airbags 40B and 40D is also stopped.

  Here, since more air is supplied to the airbags 40B and 40D than the airbags 40A and 40C, the amount of inflation is larger than that of the airbags 40A and 40C, and the airbags 40A and 40D are placed on the airbags 40A to 40D. In the plate-like member 20A, the airbag 40B, 40D side is higher than the airbag 40A, 40B side. FIG. 9 is a view of the seated person and the seating section 2 as seen from the backrest side of the chair 5, but as shown in the figure, when the airbags 40B and 40D are raised, the left side of the seated person's buttocks is the right side of the buttocks It becomes higher and the occupant leans to the right.

(Operation when the control lever is tilted to the left)
Next, an operation when the operation lever L is tilted to the “left” side from the state shown in FIG. 5 will be described. In the state shown in FIG. 5, when the seated person tilts the operation lever L to the “left” side, the control unit 110 first controls the electromagnetic valves 140 </ b> A to 140 </ b> D so that air flows from the air pump 130 to each airbag. The hoses 70A to 70D communicate with each other. Moreover, the control part 110 controls electromagnetic valve 150A-150D, and interrupts | blocks the flow of the air in hose 80A-80D.

  Next, the control unit 110 controls the air pump 130 to supply air into the airbags 40A to 40D via the hoses 70A to 70D. Thereby, each airbag begins to inflate. When a predetermined amount of air is supplied to each airbag, the control unit 110 controls the electromagnetic valves 140B and 140D to block the air flow in the hoses 70B and 70D. Thereby, the supply of air to the airbags 40B and 40D is stopped, and the inflation of the airbags 40B and 40D is stopped. Thereafter, when the control unit 110 continues to supply air to the airbags 40A and 40C and supplies a predetermined amount of air to the airbags 40A and 40C, the controller 110 controls the electromagnetic valves 140A and 140C, and the hose 70A and 70C Block the air flow. Thereby, the supply of air to the airbags 40A and 40C is also stopped, and the inflation of the airbags 40A and 40C is also stopped.

  Here, since more air is supplied to the airbags 40A and 40C than the airbags 40B and 40D, the amount of expansion is larger than that of the airbags 40B and 40D, and the plates placed on the airbags 40A to 40D. The shaped member 20A is higher on the airbag 40A, 40C side than on the airbag 40B, 40D side. FIG. 10 is a view of the seated person and the sitting part 2 as seen from the back side of the chair 5, but when the airbags 40A and 40C are raised, the right side of the seated person's buttocks is higher than the left side of the buttocks, It will tilt to the left.

  As described above, according to the present embodiment, by adjusting the amount of air in the airbags 40A to 40D, a seated person can take various postures. It becomes possible to prevent congestion. Further, according to the present embodiment, joint contracture and muscle shortening in a disabled person who is difficult to move by himself / herself can be prevented, and an effect of passive movement rehabilitation can be expected. Further, according to the present embodiment, not only the plate-like member 20A is inclined, but also the plate-like member 20A can be moved up and down, so that the position of the seated person can be adjusted to the height of the table or desk. Moreover, in the seating part 2, since the plate-like member 20A is moved up and down by the airbags 40A to 40D, the air in the airbag can be extracted and thinned when not in use, which is suitable for storage. In the present embodiment, since one of the H-shaped connecting members 30 is fixed to the plate-like member 20A and the other is fixed to the plate-like member 20B, the air bag is replaced. Can easily take out the airbag. In the present embodiment, since the connecting member 30 is H-shaped, the plate 20A can be easily tilted forward, backward, left and right as described above. Further, the connecting member 30 can be bent freely because a plurality of H-shaped members are stacked and the members are not fixed to each other, and the inclination angle of the plate-like member 20A can be increased.

[Modification]
As mentioned above, although embodiment of this invention was described, for example, you may implement this invention, changing embodiment mentioned above as follows.

  In the embodiment described above, the connecting member 30 is formed by stacking a plurality of members having the same shape, but may be formed by a single member instead of stacking a plurality of members. In the above-described embodiment, the shape of the connecting member 30 is H-shaped, but is not H-shaped, but the connecting member 31 shown in FIG. 11A and the connecting member shown in FIG. 32, the connecting member 33 shown in FIG. 11 (c), and the connecting member 34 shown in FIG. 11 (d) may have other shapes.

  In the embodiment described above, the number of airbags is four, but the number of airbags is not limited to four. For example, three or more airbags may be arranged on the left and right of the connecting portion 30C of the connecting member 30 shown in FIG.

In the above-described embodiment, the plate-like member 20A is inclined forward, backward, left and right, but the amount of air in each airbag is adjusted so that only the amount of inflation of the airbag 40C is less than the amount of inflation of other airbags. Then, it may be inclined to the right diagonally forward, or it may be inclined to the left diagonally forward by making the inflation amount of the airbag 40D smaller than the inflation amount of the other airbags.
Further, only the expansion amount of the airbag 40A is made smaller than the expansion amount of the other airbags, and the plate member 20A is inclined obliquely rearward to the right, or only the expansion amount of the airbag 40B is compared with the expansion amounts of the other airbags. The plate member 20 </ b> A may be inclined to the left obliquely rearwardly and may be inclined to other than front / rear / left / right. In the above-described embodiment, the inclination of the plate member 20A may be sequentially changed from front to back and left and right as time passes.

  In the embodiment described above, the seating portion 2 is placed on the seating surface of the chair. However, the seating portion 2 may be formed integrally with a chair, a sofa, or a wheelchair, and the seating portion of the chair. You may make it arrange | position the seating part 2 inside. In the above-described embodiment, the upper surface of the plate-like member 20A or the entire seating portion 2 may be covered with a flexible material such as polyurethane or a sponge-like member. When the pressure in the airbag is high, the cushioning property is poor and the sitting comfort is poor when the seat is directly seated on the airbag. However, in the present invention, the upper surface of the plate-like member 20A or the seating portion 2 It is possible to select and place a cushion of an appropriate material according to the seated person, and the entire device can be covered with a flexible material such as polyurethane or sponge-like member, so that the sitting comfort is good Can be a thing.

  In the embodiment described above, air is supplied into the airbag or exhausted from the airbag. However, when the airbag is inflated and deflated, a gas other than air is used. May be. Further, in order to raise or lower the plate-like member 20A, a bag-like bag capable of holding liquid is adopted instead of the airbag, and the amount of liquid in the bag is controlled. The plate-shaped member 20A may be moved up and down or tilted.

In the embodiment described above, the seating portion 2 is placed on the seat surface of the chair. However, if it is a flat part such as on the bed or the floor, it is placed other than the chair and seated on the plate-like member 20A. You may make it do.
Further, the posture change assisting device 1 described above may be arranged on the back of the chair as shown in FIG. 12 and the posture and position of the upper body may be changed by inflating or deflating each airbag.

In the embodiment described above, the air in each airbag is forcibly exhausted by the air pump 130. However, the hoses 80A to 80D are not connected to the air pump 130, and the inside of the hoses 80A to 80D is communicated. The air in the airbag may be exhausted by contracting the airbag according to the weight of the seated person.
In the above-described embodiment, the air pump supplies air to the airbag and exhausts air from the airbag. However, when supplying air to the airbag, the air is stored in the air chamber. You may make it supply air to an airbag via hose 70A-70D connected to the air chamber. In addition, a sensor for detecting the pressure of air in the airbag may be provided, and supply of air to the airbag may be stopped when the pressure detected by the sensor becomes a predetermined pressure or higher. According to this configuration, the airbag can be prevented from rupturing.

  In the above-described embodiment, the connecting member for connecting the plate-like member 20A and the plate-like member 20B is a combination of metal rod-like members in an H-shape as shown in FIG. 35). When this connecting member 35 is used, the H-shaped end portion 35A and end portion 35B are rotatably supported by a bearing or the like on the plate-shaped member 20A, and the H-shaped end portion 35C and end portion 35D are supported on the plate-shaped member 20B. Support for rotation. According to this configuration, when the airbag is inflated, the supported portion of the H-shaped connecting member 35 rotates, so that the plate-like member moves up and down.

1 is an external view of a posture change assisting device 1 according to an embodiment of the present invention. FIG. 4 is a top view, a left side view, and a right side view of the seating portion 2. FIG. 4 is a top view and a side view of a connecting member 30. 3 is a block diagram illustrating a configuration of an operation unit 3. FIG. It is a figure for demonstrating operation | movement when switch SW is turned ON and the key K2 is operated. It is a figure for demonstrating operation | movement when the key K1 is operated. It is a figure for demonstrating operation | movement when operating the operation lever L to the front side. It is a figure for demonstrating operation | movement when operating the operation lever L to the back side. It is a figure for demonstrating operation | movement when operating the operation lever L to the right side. It is a figure for demonstrating operation | movement when operating the operation lever L to the left side. It is a top view of the connection member which concerns on the modification of this invention. It is a figure for demonstrating the modification of this invention. It is an external view of the connection member which concerns on the modification of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Posture change auxiliary device, 2 ... Seating part, 3 ... Actuation part, 20A, 20B ... Plate-shaped member, 30 ... Connection member, 40A-40D ... Airbag, 50A ˜50D, ... male screw, 70A to 70D ... hose, 80A to 80D ... hose, 110 ... control unit, 111 ... CPU, 112 ... ROM, 113 ... RAM, 120 ... Operation unit, 130 ... Air pump, 140A to 140D ... Solenoid valve, 150A to 150D ... Solenoid valve

Claims (6)

A plate-like first member;
A plate-like second member facing the first member;
It is plate-shaped, located between the first member and the second member, a part of which is fixed to the first member, and another part of which is fixed to the second member, Connecting the second member so that they can be separated and approached, and a connecting member having a smaller area than the first member and the second member;
A plurality of bag-like bags disposed between the first member and the second member at a position where the connecting member is not located, and inflating and contracting according to the amount of fluid held inside;
Control means for controlling the amount of fluid in the plurality of bags;
A posture change assisting device. The connecting member is
A belt-like first flat part; a belt-like second flat part parallel to the first flat part; and a connecting part for connecting the first flat part and the second flat part. The part is fixed to the first member, and a part of the second flat part is fixed to the second member and bends according to a force applied from the outside. Posture change assist device.   The posture change assisting device according to claim 1, wherein the connecting member is formed by stacking a plurality of members of the same type.   The posture change assisting device according to claim 3, wherein the plurality of members are not fixed to each other.   The posture change assisting device according to claim 1, wherein the control unit individually increases or decreases the amount of fluid in each of the plurality of bags as time elapses.   A chair comprising the posture change assisting device according to any one of claims 1 to 5.

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