JP3183602U - Bathing care lift device - Google Patents

Abstract

There is provided a lift device for bathing care that is free from wasteful disposal of tap water, is economical, and is suitable for protecting the natural environment.
A piston / cylinder device 20B for raising and lowering a seating seat by water pressure, a working water tank 30A, a submersible pump 30B for supplying working water to a piston / cylinder device disposed in the tank, a piston / cylinder device, Connected to the water supply / drainage pipe device 40 provided between the tank and the submersible pump and the water supply / drainage pipe device, the submersible pump 30B is driven when the seating seat 20E is raised, and the submersible pump is connected when the seating seat rises. And pump drive control means 50 for stopping the drive. The working water is returned from the piston / cylinder unit to the tank when the seat is lowered.
[Selection] Figure 1

Description

  The present invention relates to a bathing care lift device used for assisting a caregiver when bathing in a state where a care recipient is seated on a seat.

  In this technical field, a bathing care lift device used for assisting a caregiver when taking a bath while a care recipient is seated on a seat is well known. For example, a lift device for bathing care disclosed in Patent Document 1 has a piston / cylinder device installed upright adjacent to a bathtub, and a seating seat is supported by a piston rod of the piston / cylinder device and is moved to a piston. And can be moved up and down and swiveled.

  This conventional bathing care lift device operates with the supply pressure of tap water, and the cylinders of the piston / cylinder device are selectively connected to the water supply and drainage pipes via a manually operated valve device. This is done by communicating.

  That is, in the bathing care lift device disclosed in Patent Document 1, the supply pressure of tap water is used to raise the seating seat, and the tap water is discarded when the seating seat is lowered. Therefore, the lift device for bathing care disclosed in Patent Document 1 is not preferable in terms of both economic efficiency and protection of the natural environment because tap water is wasted every time it is used.

JP-A-2005-288106

  Accordingly, an object of the present invention is a bathing care lift device used for assisting a caregiver when taking a bath while the care recipient is seated on a seat without wasteful disposal of tap water. And it is providing the lift apparatus for bathing care which can control the raising / lowering of a seating seat easily only by operating an operation lever between a water supply position and a drainage position.

  A lift device for bathing care according to the present invention includes a piston / cylinder device that raises and lowers a seating seat by water pressure, a working water tank, a submersible pump that supplies working water to the piston / cylinder device disposed in the tank, The water supply / drainage pipe device provided between the piston / cylinder device and the tank, the submersible pump, and the water supply / drainage pipe device are connected to drive the submersible pump when raising the seat, and the seating Pump drive control means for stopping the driving of the submersible pump when the seat is raised, and the working water is returned from the piston / cylinder device to the tank when the seat is lowered.

  In the above-mentioned bathing care lift device, the water supply / drainage pipe device includes: a water supply pipe that supplies hydraulic water to the piston / cylinder device; a drainage pipe that discharges hydraulic water from the piston / cylinder device; and the piston / cylinder device; A connecting pipe that connects the water supply pipe and the drain pipe; and a three-way valve provided at an intersection of the water supply pipe, the drain pipe, and the connection pipe. A water supply position where the water supply pipe and the connection pipe communicate with each other, a water supply position where the water supply pipe is closed and the drainage pipe communicates with the connection pipe, the water supply pipe, the drainage pipe, and the connection pipe Is switched to a stop position at which communication between all of these is interrupted.

  Further, in the bathing care lift device, the pump drive control means has a pressure switch installed on the water supply pipe of the water supply / drainage pipe device, and the manual lever of the three-way valve switches to the water supply position. The pressure switch detects a pressure drop in the water supply pipe and drives the pump. When the manual lever of the three-way valve is in the drainage position or the stop position, the pressure switch does not operate.

  Furthermore, in the above-mentioned bathing care lift device, when the manual lever of the three-way valve is switched to the drainage position, the connection pipe and the drainage pipe communicate with each other, and the working water in the piston / cylinder device is Returned to the tank.

  As described above, the bathing care lift device according to the present invention does not involve wasteful disposal of tap water, so it is more economical than conventional bathing care lift devices and suitable for protecting the natural environment. It is a thing.

FIG. 1 is an overall schematic view of a bathing care lift device according to the present invention. FIG. 2 is a sectional view of the main part of the piston / cylinder device.

  Next, with reference to the accompanying drawings, an embodiment of a lift device for bathing care according to the present invention will be described.

  Referring to FIG. 1, a portion of the bathtub is indicated by reference numeral 10, and this bathtub 10 is configured as a digging bathtub. That is, the bathtub 10 is shown as a form dug down from the floor of the washroom. However, the lift device for bathing care of the present invention can be applied to other various bathtubs, for example, a floor-mounted bathtub, a semi-embedded bathtub, and the like.

  In the present embodiment, the lift device for bathing care includes a lift device main body 20, a working water supply device 30 that supplies working water to the main body, and a water supply / drainage device between the lift device main body 20 and the working water supply device 30. 40.

  The lift device main body 20 is slidable in the axial direction on the outside of the mounting base 20A installed on the bottom of the bathtub 10, the piston / cylinder device 20B standing on the mounting base 20A, and the piston / cylinder device 20B. In addition, an outer cylindrical member 20C that is pivotably mounted, a seating seat support stay 20D that is fixed to the outer cylindrical member 20C, and a seating seat 20E that is detachably mounted on the support stay 20D are provided.

  As is apparent from FIG. 2, the piston / cylinder device 20B includes a cylinder 201, a piston 202 accommodated in the cylinder, and a piston rod holder 204 at the upper end of the cylinder 201 that extends upward from the center of the piston. The outer cylindrical member 20 </ b> C is pivotally connected to the top end of the piston rod 203. Thus, the outer cylindrical member 20 </ b> C rises or lowers as the piston 202 moves up and down outside the cylinder 201, and can turn around the cylinder 201. In short, the seat 20 on which a care recipient is seated at the time of bathing is supported by the piston / cylinder device 20B so as to be movable up and down and swivelable. The rise of the piston 202 is restricted when the limiter 205 provided on the piston 202 comes into contact with the piston rod holder 204.

  The working water supply device 30 includes a working water tank 30A and a submersible pump 30B installed in the working water tank 30A. The working water tank 30A receives water supply from a water pipe (not shown) via a float working valve, so that a constant amount of water is always maintained in the working water tank 30A. As the submersible pump 30B, a suitable commercially available one can be used, and one that can pump the working water at a pressure of about 4 atm, which is substantially the same as the tap water supply pressure, is adopted.

  The water supply / drainage pipe device 40 is provided with a three-way valve 40A, a water supply pipe 40B, a connection pipe 40C, and a drainage pipe 40D, and the three-way valve 40A is disposed at the intersection of the three pipes 40B, 40C, 40D. That is, the three-way valve 40A has a first connection port with the water supply pipe 40B extending from the discharge port of the submersible pump 30B and a second connection port with the connection pipe 40C connected to the cylinder 201 of the piston / cylinder device 20B. In addition, a third connection port with the drain pipe 40D is provided. The drain pipe 40D is led to the upper part in the working water tank 30A and is opened at the location.

  The three-way valve 40A includes an operation lever 401, and the operation lever 401 is switched between a water supply position, a drainage position, and a stop position. When the operation lever 401 is switched to the water supply position, the first and second connection ports of the three-way valve 40A are opened, the water supply pipe 40B and the connection pipe 40C communicate with each other, and the third pipe connected to the drain pipe 40D at the same time. The connection port is closed. As a result, the working water is supplied from the working water tank 30A to the cylinder 201 of the piston / cylinder device 20B. When the operation lever 401 is switched to the drainage position, the second and third connection ports of the three-way valve 40A are opened, and the connection pipe 40C and the drainage pipe 40D communicate with each other and are connected to the water supply pipe 40B. The connection port is closed. As a result, the working water is drained from the cylinder 201 of the piston / cylinder device 20B and returned to the tank 30A. When the operation lever 401 is switched to the stop position, all of the first, second, and third connection ports connected to the water supply pipe 40B, the connection pipe 40C, and the drain pipe 40D of the three-way valve 40A are closed. The movement of the working water stops.

  The bathing care lift device according to the present invention further includes a pump drive control device 50 for driving the submersible pump 30B. The pump drive control device 50 includes a controller box 50A and a pressure switch 50B provided in the water supply pipe 40B to detect a drop in pressure. In the controller box 50A, there is a drive power supply circuit (not shown) for driving the submersible pump 30B, and a switch element (not shown) for controlling on / off of the drive power supply circuit based on the signal of the pressure switch 50B. ) And

  The operation of the pump drive control device 50 is as follows. That is, when the operation lever 401 of the three-way valve 40A is switched to the water supply position, the first and second connection ports of the three-way valve 40A are opened and the water supply pipe 40B and the connection pipe 40C communicate with each other. The pressure inside decreases. When the pressure switch 50B detects the pressure drop in the water supply pipe 40B, the switch element turns on the drive power circuit of the submersible pump 30B based on the detection signal, and drives the submersible pump 30B. Thus, the working water is supplied from the tank 30A to the cylinder 201 of the piston / cylinder device 20B. When the inside of the cylinder 201 is filled with working water, the piston 202 rises, and the limiter 205 comes into contact with the piston rod holder 204, the piston 202 cannot rise. As a result, when the water pressure in the cylinder 201, the connecting pipe 40C and the water supply pipe 40B rises to about 5 atmospheres, the submersible pump 30B is set to automatically stop its operation. On the other hand, when the operation lever 401 of the three-way valve 40A is at a position other than the water supply position, the pressure switch 50B does not operate and the submersible pump 30B is not driven because no pressure drop occurs in the water supply pipe 40B.

  In FIG. 1, reference numeral 50C denotes a leakage breaker, and the drive power supply circuit of the submersible pump 30B is supplied with power from a commercial power supply via the leakage breaker 50C. Reference numeral 50D indicates a pressure gauge for measuring the pressure of the working water in the first water supply pipe 40B, but the pressure gauge 50D itself does not directly participate in the control of the submersible pump 30B.

  Next, the operation of the bathing care lift device according to the present invention will be described. For convenience of explanation, it is assumed that the operation lever 401 of the three-way valve 40A is placed at the drainage position as an initial state.

  As is clear from the above description, in a state where the operation lever 401 is placed at the drainage position, the second and third connection ports of the three-way valve 40A are opened and the connection pipe 40C and the drainage pipe 40D communicate with each other. The working water in the piston / cylinder device 20B is returned to the working water tank 30A through the connecting pipe 40C and the drain pipe 40D. On the other hand, the first connecting port of the three-way valve 40A, that is, the water supply pipe 40B is closed, so that the working water in the water supply pipe 40B is stationary. At this time, the seat 20E is in the lower position together with the outer cylindrical member 20C.

  In the initial state assumed above, when the operation lever 401 is operated from the drainage position to the water supply position, the first and second connection ports of the three-way valve 40A are opened, and the water supply pipe 40B and the connection pipe 40C communicate with each other. On the other hand, the third connecting port of the three-way valve 40A, that is, the connecting port connected to the drain pipe 40D is closed. Thus, as a result of opening the first and second connection ports, the water pressure in the water supply pipe 40B decreases, and the pressure switch 50B detects the pressure drop in the water supply pipe 40B and drives the submersible pump 30B. The working water is supplied from the working water tank 30A to the piston / cylinder device 20B through the water supply pipe 40B and the connecting pipe 40C. For this reason, the seat 20E rises from the lower position together with the outer cylindrical member 20C. During this time, the flow of working water is maintained in the water supply pipe 40B, and the operation state of the submersible pump 30B is also continued.

  When the inside of the cylinder 201 of the piston / cylinder device 20B is filled with working water and the limiter 205 comes into contact with the piston rod holder 204, the piston 202 cannot be raised, and the seating seat 20E stops at the upper position together with the outer cylindrical member 20C. . Thereby, when the water pressure in the cylinder 201, the connecting pipe 40C, and the water supply pipe 40B rises and reaches about 5 atmospheres, the submersible pump 30B stops operating as a pressure rise limit.

  Thereafter, when the operation lever 401 is returned to the drainage position, the second and third connection ports of the three-way valve 40A are opened, and the connection pipe 40C and the drainage pipe 40D communicate with each other. For this reason, the working water in the piston / cylinder device 20B is operated from the inside of the cylinder 201 through the connecting pipe 40C and the drain pipe 40D depending on the load of the seating seat 20E and the outer cylindrical member 20C and, in some cases, the weight of the care recipient. It is returned to the water tank 30A and collected. At this time, the first connection port of the three-way valve 40A connected to the water supply pipe 40B is closed.

  When the operation lever 401 is switched from the water supply position to the stop position while the seating seat 20E is being raised, or when the operation lever 401 is switched from the drainage position to the stop position while the seating seat 20E is being lowered, the three-way valve All of the first, second and third connecting ports of 40A are closed, and the movement of the working water in the water supply pipe 40B, connection pipe 40C and drainage pipe 40D of the water supply / drainage pipe device 40 is stopped. As a result, the seating seat 20E is held at the height position when the operation lever 401 is switched.

  The lift device for bathing care according to the present invention is applicable not only to a digging-down bathtub but also to various bathtubs such as a floor-mounted bathtub and a semi-embedded bathtub.

20 Lifting device body 20B Piston / cylinder device 20E Seating seat 30 Working water supply device 30A Working water tank 30B Submersible pump 40 Water supply / drainage device 40A Three-way valve 401 Operation lever 50 Pump drive control means 50B Pressure switch

Claims (4)

  A piston / cylinder device that raises and lowers a seating seat by water pressure, a working water tank, a submersible pump that supplies working water to the piston / cylinder device disposed in the tank, and the piston / cylinder device and the tank The water supply / drainage pipe device provided between the submersible pump and the water supply / drainage pipe device is connected to drive the submersible pump when raising the seating seat, and when the seating seat rises, A pump drive control means for stopping the driving, and the working water is returned to the tank from the piston / cylinder device when the seating seat is lowered.   The water supply / drainage pipe device connects a water supply pipe for supplying hydraulic water to the piston / cylinder device, a drainage pipe for discharging hydraulic water from the piston / cylinder device, and the piston / cylinder device, the water supply pipe and the drainage pipe. And a three-way valve provided at an intersection of the water supply pipe, the drainage pipe, and the connection pipe, and the three-way valve closes the drainage pipe by a manual lever and connects the water supply pipe and the connection pipe. A water supply position where the pipe communicates, a drainage position where the water supply pipe is closed and the drain pipe and the connection pipe communicate with each other, and communication between all of the water supply pipe, the drain pipe, and the connection pipe is blocked. The bathing care lift device according to claim 1, wherein the lift device is switched between a stopped position and a stop position.   The pump drive control means has a pressure switch on the water supply pipe of the water supply / drainage pipe device, and when the manual lever of the three-way valve is switched to the water supply position, the pressure switch reduces the pressure drop in the water supply pipe. The bathing care lift device according to claim 2, wherein the pressure switch is not operated when the pump is driven by detection and the manual lever of the three-way valve is in the drainage position or the stop position.   When the manual lever of the three-way valve is switched to the drainage position, the connection pipe and the drainage pipe communicate with each other, and the working water in the piston / cylinder device is returned to the tank. The lift apparatus for bathing care as described.

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