JP2012105717A - Safety system of ascending/descending bathtub - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure safety when a loading section loaded with a bathing person is transferred to the outside from an ascending/descending bathtub.SOLUTION: The ascending/descending bathtub 1 includes a lock detecting section for detecting that a carriage of a stretcher is locked to the ascending/descending bathtub. An upper table 16 of a lifter for lifting/lowering a movable bathtub with respect to a stationary bathtub comprises a descending end operation piece 26 and a descending intermediate operation piece 27. A lower table 15 comprises a lower end limit switch LS3 and a descending intermediate limit switch LS4. The descending intermediate operation piece 27 is installed below the descending end operation piece 26, so as to abut on the descending intermediate limit switch LS4 earlier and put it into an ON-state. In the case where the lock detecting section detects that the carriage is not locked to the ascending/descending bathtub 1, the movable bathtub is stopped in a descending intermediate position to disable the movement of a stretcher body. In the case where the carriage is locked to the ascending/descending bathtub 1, the movable bathtub is lowered until abutting on the lower end limit switch LS3 without being stopped even when the descending intermediate limit switch LS4 is put into the ON-state.

Description

  The present invention, for example, makes a bath by raising and lowering a movable bathtub in a state where a mounting portion such as a stretcher on which a bather such as a physically handicapped person or a wheelchair for bathing is moved to a support base of the elevator bathtub The present invention relates to a safety system for an elevating bathtub.

In general, as an auxiliary tool used when bathing a person who is inconvenient and needs assistance (hereinafter referred to as a person who needs assistance), for example, lift bathtubs described in Patent Documents 1 and 2 below have been proposed. Yes. The elevator tub includes a movable bathtub that can be raised and lowered with respect to the fixed bathtub. When a person requiring assistance is bathed using the elevator tub, first, for example, a stretcher carriage on which the person requiring assistance is placed is positioned and fixed to the side of the elevator tub.
In this state, the movable bathtub filled with hot water that can be moved up and down is held at the lowermost position. Then, the stretcher body, which is supported by the cart of the stretcher and on which the person requiring assistance is placed, is moved from the rail of the cart to the rail provided on the support table of the fixed bathtub, and is brought into a bathing state.

The movable bathtub filled with hot water is raised to the uppermost position with respect to the stretcher body fixedly supported on the support base in the elevating tub, and the hot water surface reaches, for example, the shoulder or neck, and is held in a bathing state. After bathing, the movable bathtub is lowered to the lowermost position, and the stretcher body is moved from the support base to the carriage.
A conventional elevator tub is a movable bathtub between the uppermost position where a person requiring assistance placed on the stretcher body enters a bathing state and the lowermost position where the stretcher body can be taken in and out between the support and the stretcher. An up switch and a down switch are provided so that the can move up and down.

Japanese Patent Laid-Open No. 11-56905 JP 2000-116744 A

However, the stretcher carriage may not be locked to the side of the lift tub when the movable bathtub is lowered to the lowermost position, for example, when a person requiring assistance after bathing is to leave the bathtub. In such a state, if the stretcher body is mistakenly moved from the support base in the lift tub to the carriage, the stretcher body may not be placed on the carriage and may fall to the floor outside the lift bathtub.
Also, when raising the movable bathtub to the uppermost position, if the bather is mounted on the stretcher body in a small or slanting posture, if the movable bathtub filled with hot water is raised to the uppermost position, it will be submerged. There was a risk. Moreover, after the assistant has pushed the switch that raises the movable tub, if other work is done to look away from the person requiring assistance, the person on the stretcher body is submerged by the rising surface of the movable bathtub. Or the hot water surface could reach the mouth and swallow the hot water.

  The present invention has been made in view of such a situation, and an object of the present invention is to provide a safety system for an elevating bathtub that can ensure the safety of the bather when the mounting portion on which the bather is mounted is transferred from the elevating bathtub to the outside. And

The safety system for a lift tub according to the present invention is a lift that allows a bather to enter and exit by raising and lowering a movable bathtub while holding a mounting portion on which a bather is placed on a support base in the lift tub. Mounted when the movable bathtub is lowered when it is detected in the bathtub that the carriage receiving the loading part is locked to the lifting bathtub, and the lock detection part detects that the carriage is not locked. And descent intermediate stop means for stopping at a descent intermediate position higher than the descent end position where the part can enter and exit.
According to the safety system for a lift bathtub according to the present invention, when the movable bathtub is lowered to the lowered end position after the bathing is finished and the mounting portion is discharged from the lift bathtub, the lock detection unit indicates that the carriage is not locked to the lift bathtub. When detected, the movable bathtub can be stopped by the lowering intermediate stop means at the lower intermediate position higher than the lower end position. Thereby, it can prevent that a mounting part transfers to the exterior from the inside of a movable bathtub.

In addition, when the movable bathtub is lowered, when the lock detection unit confirms that the carriage is in a locked state, a lowering control unit that lowers the mounting unit to the lower end position without stopping by the lowering intermediate means is provided. preferable.
When the dolly of the bathing unit is locked to the lifting / lowering tub, the lowering control unit lowers the movable bathtub to the lowering end without stopping at the lowering intermediate position and stops it by the lowering end stopping means. Can be transported without being dropped from the elevator tub to a cart fixed outside.

Further, an upper table that can be moved up and down with respect to the lower table is connected to a movable bathtub, and a lowering intermediate stopping means and a lowering end stopping means are provided on one of the upper table and the lower table, and the lowering table is operated to operate the lowering intermediate stop means It is preferable that an intermediate actuating part and a descending end actuating part for actuating the descending end stopping means are provided, and the descending intermediate actuating part first turns on the descending intermediate stop means when the movable bathtub is lowered.
By lowering the movable tub connected to the upper table together with the upper table, the lowering intermediate working part first conducts the lowering intermediate stopping means between the lower table and the carriage of the bathing unit is locked to the lifting tub. Whether the upper table and the movable bathtub are stopped at the lowering intermediate position where the mounting part cannot be transferred to the outside or whether the mounting part is lowered to the lower end position where the mounting part can be transferred to the outside by detecting whether or not the lock detection part is present. Can be identified.

Moreover, when raising a movable bathtub, it is preferable to provide the raising intermediate | middle stop means to stop at the raising intermediate position below a raising end position.
When raising the movable bathtub at the time of bathing, even if the assistant looks away from the bather mounted on the mounting part in the movable bathtub, the movable bathtub is not moved to the rising end position by the rising middle stop means. Since the hot water surface rises too much, the bather can be prevented from being submerged or drinking hot water.

  According to the safety system for a lift bathtub according to the present invention, a lock detection unit that detects that the carriage is locked to the lift bathtub, and the movable bathtub when the lock detection unit detects that the carriage is not locked. When it is detected that the carriage is not locked to the elevator tub, it is provided with a lowering intermediate stop means for stopping the mounting portion at a lower intermediate position higher than the lower end position where the mounting portion can be moved in and out. Will be stopped at a lower intermediate position higher than the descending end position, the mounting part cannot be transferred from the lifting tub to the outside, and it is prevented from falling downward when the mounting part is transferred from the movable bathtub to the outside. be able to. Even in that case, the person requiring assistance can be lifted off the mounting portion. Therefore, the safety of exiting the mounting portion can be ensured, and the person requiring assistance can be removed from the mounting portion and pulled up to be withdrawn from the ascending / descending bathtub, thereby ensuring good workability.

The raising / lowering bathtub by embodiment of this invention is shown, (a) is a front view which shows an raising / lowering bathtub and a lifter, (b) is a side view similarly. It is a front view which shows the raising / lowering bathtub and stretcher main body which are shown in FIG. 1, and has a movable bathtub in a fall end position. It is a front view of the lifter shown in FIG. It is a top view except the upper table of the lifter shown in FIG. It is an enlarged view explaining the descent | fall end limit switch and descent | fall intermediate | middle limit switch of a raising / lowering bathtub shown in FIG.1 (b). It is a block diagram of the safety device of a raising / lowering bathtub. It is a front view which shows the relationship between a stretcher main body and a movable bathtub at the time of raising a movable bathtub in the state which installed the stretcher main body in the raising / lowering bathtub, (a) is a front view with a movable bathtub in a raise end position, b) is a front view in the raised intermediate position. It is the front view which the movable bathtub descended to the descent intermediate position in the state where the stretcher body was installed in the elevator bathtub. It is a principal part perspective view which shows an operation panel in the movable bathtub of a raising / lowering bathtub.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 and 2 has a movable bathtub 3 formed in a substantially rectangular tube shape on the outer side of a fixed bathtub 2 installed on a floor surface so as to be movable up and down. FIG. 2 shows a state in which the movable bathtub 3 is lowered to the lower end position (lowermost position) of the fixed bathtub 2, and a stretcher placed on the cart 4 of the stretcher, for example, at the upper center of the fixed bathtub 2. A support base 6 for fixing and holding the main body 5 is provided. A pair of rails 7 is provided on the support base 6, and the wheels 8 of the stretcher main body 5 slide on the rails 7, so that the rails provided on the stretcher carriage 4 (not shown) change to the rails 7 of the support base 6. The stretcher body 5 can be moved and positioned and fixed.
The stretcher body 5 is substantially plate-shaped and includes a seating portion 5a for receiving the lower body from the buttocks of the person requiring assistance, and a backrest portion 5b for receiving the upper body comprising the back and the head, and lower side portions provided on both sides of the seating portion 5a. 8a and upper side portions 8b provided on both sides of the backrest portion 5b. The inclination angle of the backrest 5b can be adjusted with respect to the seating portion 5a, and in the normal state shown in the figure, the backrest 5b is inclined and held upward.

In addition, a locking portion 10 for locking and fixing the stretcher carriage 4 to the side portion is attached to the fixed bathtub 2 of the elevating bathtub 1, and the gap between the locking portion 10 and the fixed bathtub 2 is fixed. The movable bathtub 3 can be moved up and down. The locking unit 10 includes a lock unit 11 that locks the lock mechanism provided on the stretcher carriage 4 to the fixed bathtub 2, and a lock detection unit 12 that detects a lock state between the lock unit 11 and the lock mechanism. It has been.
The lift bathtub 1 shown in FIG.1 and FIG.3 is provided with the lifter 14 for raising / lowering the movable bathtub 3. As shown in FIG. The lifter 14 is attached to the fixed bathtub 2 and is provided with a lower table 15 provided on the base frame 13, an upper table 16 attached to the movable bathtub 3, and approximately X on the opposite side surfaces of both tables 15 and 16. A pair of arm portions 17 are provided so as to intersect with each other in a letter shape and raise and lower the upper table 16. The upper table 16 and the lower table 15 are formed, for example, in a substantially square frame shape in plan view.

The arm portion 17 shown in FIG. 3 has a first arm portion 18 and a second arm portion 19 that are rotatably supported by a central support shaft 20 in the length direction. The arm portion 17 is attached to the first arm portion 18. A hydraulic cylinder 21 for moving up and down is connected. The hydraulic cylinder 21 is connected to a hydraulic pump 23 via a pipeline 22.
3 and 4, for example, the lower arm portion 19 a of the second arm portion 19 is rotatably supported by the lower table 15, and the upper shaft portion 19 b is formed on the upper table 16. The long hole 16a is slidably supported. The first arm portion 18 has a wheel 18c having a shaft portion 18b at the lower end thereof supported so as to be slidable on the lower table 15, and an upper end shaft portion 18a is rotatably supported on the upper table 16.

Further, the plan view shown in FIG. 4 is a first arm portion located on the lower side of the support shaft 20 in the pair of arm portions 17 shown in the lower side of the figure. 18 and the second arm portion 19, and the other arm portion 17 shown in the upper side of the figure shows the first arm portion 18 and the second arm portion 19 on the lower side with respect to the center line. The side shows an upper first arm portion 18 and a second arm portion 19.
In FIG. 4, a guide column 24 is provided at the center of the lower table 15 to support the upper table 16 and the movable bathtub 3 so as to be movable up and down in the center.
Therefore, when the hydraulic cylinder 21 is extended and pushed in the direction in which the first arm portion 18 of the arm portion 17 is raised, the first arm portion 18 and the second arm portion 19 have one shaft portions 18a, 19a (in FIG. 3). The other shaft portion 18b stands on the lower table 15 by a wheel 18c, and the other shaft portion 19b extends along the elongated hole 16a of the upper table 16 to the one shaft portion 18a. , 19a. As a result, the upper table 16 rises in parallel with the lower table 15, so that the movable bathtub 3 connected to the upper table 16 rises. When the movable bathtub 3 is lowered, the arm portion 17 is similarly operated in the reverse direction by contracting the hydraulic cylinder 21.

3 and 4, the lower table 15 includes a rising end limit switch LS <b> 1 that detects horizontal movement of the shaft portion 18 b of one first arm portion 18, and a horizontal position of the shaft portion 18 b of the other first arm portion 18. A rising intermediate limit switch LS2 for detecting movement is provided.
Here, the rising end limit switch LS1 is stopped at a position where the movable bathtub 3 is raised to the rising end position (uppermost end position) in a state where the stretcher body 5 on which a person requiring assistance is mounted on the support base 6 is fixed. (See FIG. 7A). Therefore, as shown in FIG. 4, the rising end limit switch LS1 is struck at the position closest to the shaft portion 19a side of the second arm portion 19 by the shaft portion 18b slidably provided on the lower table 15. It is arranged so that it can be detected.

Further, the lift intermediate limit switch LS2 is for stopping the movable bathtub 3 at the lift position where the height is slightly lower than the lift end position (see FIG. 7B). Therefore, as shown in FIG. 4, the lift intermediate limit switch LS <b> 2 is lifted with respect to the shaft portion 19 a of the second arm portion 19 by the shaft portion 18 b slidably provided on the lower table 15. It is arranged so that it can be hit and detected at a slightly earlier stage.
Therefore, as shown in FIG. 4, the rising end limit switch LS1 is installed closer to the shaft portion 19a of the second arm portion 19 than the rising intermediate limit switch LS2.

In FIG. 5, a lower end limit switch LS <b> 3 and a lower intermediate limit switch LS <b> 4 are provided at one end side of the lower table 15. In addition, at the positions of the upper table 16 facing the lower limit switch LS3 and the lower intermediate limit switch LS4, there are actuating pieces 26 and 27 for stopping the movable bathtub 3 descending by hitting the limit switches LS3 and LS4, respectively. Is provided.
The lower end actuating piece 26 hitting the lower end limit switch LS3 is located farther from the lower table 16 than the intermediate actuating piece 27 hitting the lowering intermediate limit switch LS4. Therefore, the movable bathtub 3 is in the lowered position (see FIG. 2) in a state where the movable bathtub 3 is stopped by hitting the lower limit switch LS3 with the lower end operating piece 26 (see FIG. 2), and the stretcher body 5 attached to the support base 6 Can be moved from the movable bathtub 3 to the cart 4 of the stretcher. In addition, the movable bathtub 3 is slightly above the lowered position (see FIG. 8) and is attached to the support base 6 in a state where the movable bathtub 3 is stopped by hitting the lower intermediate limit switch LS4 with the intermediate operation piece 27. The stretcher main body 5 cannot be moved from the movable bathtub 3 to the carriage 4.

FIG. 6 is a block diagram showing a safety device 29 that controls the raising and lowering of the movable bathtub 3. In the safety device 29 shown in FIG. 6, the rising end limit switch LS <b> 1 and the rising intermediate limit switch LS <b> 2 are connected to the rising control unit 31 in the control means 30. When either of these limit switches LS1 and LS2 is turned ON, a stop signal is output to the hydraulic cylinder 21 to stop the ascent of the movable bathtub 3.
The lower limit switch LS3 and the lower intermediate limit switch LS4 are connected to the lowering control unit 32 of the control means 30. When either of the limit switches LS3 and LS4 is turned ON, a stop signal is output to the hydraulic cylinder 21 to stop the descent of the movable bathtub 3.

When the movable bathtub 3 is raised and the shaft portion 18b is stopped by hitting the rising end limit switch LS1, the movable bathtub 3 is a part of the head portion of the backrest portion 5b of the stretcher body 5 as shown in FIG. Only the part is at the rising end position protruding from the movable bathtub 3. When the shaft portion 18b is stopped by hitting the rising intermediate limit switch LS2, the movable bathtub 3 is slightly lowered from the rising end position of the stretcher main body 5 as shown in FIG. The whole is in an intermediate position where it protrudes from the movable bathtub 3.
When the movable bathtub 3 is lowered and the upper table 16 is stopped by hitting the lower limit switch LS3, the movable bathtub 3 is placed on the stretcher body 5 and the support base 6 as shown in FIG. It is in the descent end position protruding from. At this descending end position, the stretcher body 5 can be taken in and out between the support base 6 of the lift bathtub 1 and the cart 4 of the stretcher. Further, when the upper table 16 stops by hitting the lowering intermediate limit switch LS4, the movable bathtub 3 is in the lowering intermediate position where the back portion 5b of the stretcher body 5 protrudes and the seating portion 5a is hidden as shown in FIG. is there.

  A lock detection unit 12 that determines whether the cart 4 of the stretcher is locked to the fixed bathtub 2 of the elevating bathtub 1 is also connected to the lowering control unit 32. When the movable bathtub 3 is lowered by the hydraulic cylinder 21, when the lock detection unit 12 detects that the carriage 4 is locked, the lowering of the movable bathtub 3 is stopped even when the lower intermediate limit switch LS4 is turned on. If the lower limit switch LS3 is turned on, the lowering of the movable bathtub 3 is stopped. However, when the lock detection unit 12 detects that the carriage 4 is not locked, the movable bathtub 3 is stopped when the lowering intermediate limit switch LS4 is turned on.

FIG. 9 is a view showing an operation panel 35 provided on the upper surface of the movable bathtub 3 of the elevating bathtub 1. The operation panel 35 is provided with a plurality of operation buttons for performing processing such as supply and discharge of hot water. The operation panel 35 is bundled and connected with various cords, and is rotatable about a shaft body (not shown). The operation panel 35 is directed in an arbitrary direction so that an assistant working near the elevating bathtub 1 can easily operate. Can be done.
Moreover, the separate operation part 36 is each provided in the both sides | surfaces of the movable bathtub 3 so that the assistant who works by standing in the side surface of the raising / lowering bathtub 1 can operate easily. The operation buttons provided on the operation unit 36 are, for example, an up button 37, a down button 38, a stop button 39, and the like of the movable bathtub 3. When the ascent button 37 is pressed, the movable bathtub 3 starts to rise, and is stopped when the stop button 39 is pressed or when the ascending intermediate limit switch LS2 is turned on. Thereafter, until the ascending end limit switch LS1 is turned on, the movable bathtub 3 is raised only while the ascending button 37 is being pressed. When the lowering button 38 is pressed, the movable bathtub 3 starts to descend, and is stopped by pressing the stop button 39 or turning on the limit switches LS3 and LS4.

The safety system of the lift bathtub 1 according to the present embodiment has the above-described configuration, and the operation thereof will be described next.
First, in FIG. 2, the movable bathtub 3 is held at the lowered end position in a state where the cart 4 of the stretcher is locked to the locking means 11 of the locking portion 10 of the fixed bathtub 2 in the lift bathtub 1. Then, the stretcher body 5 on which the person requiring assistance is mounted is transferred from the carriage 4 to the support base 6 in the movable bathtub 3 and fixed.
From this state, when the ascending button of the operation unit 36 is pressed, the movable bathtub 3 filled with hot water rises above the stretcher body 5 on the support base 6. That is, as shown in FIG. 3, the first arm portion 18 of the lifter 14 is lifted while swinging by the extension operation of the hydraulic cylinder 21, and the second arm portion 19 connected by the support shaft 20 is moved to the first arm portion 18. And lifted up while swinging together.

Since the lifter 14 has shaft portions 18a, 19a at one end of the first arm portion 18 and the second arm portion 19 rotatably supported by the upper table 16 and the lower table 15, the first and second arm portions 18, By the lifting operation of the arm 19, the shaft portions 18 b and 19 b on the other end side of the arm portions 18 and 19 linearly move along the upper table 16 and the lower table 15 in a direction approaching the one shaft portion 18 a and 19 a. As the first and second arm portions 18 and 19 are lifted, the upper table 16 rises while maintaining a parallel state with respect to the lower table 15. Thereby, the movable bathtub 3 connected with the upper table 16 goes up.
As the movable bathtub 3 rises, as shown in FIG. 4, the shaft portions 18 b and 19 b on the other end side of the first arm portion 18 and the second arm portion 19 are on one end side along the lower table 15 and the upper table 16. When sliding in the direction of the shaft portions 18a and 19a, one of the shaft portions 18b moving along the pair of lower tables 15 hits the rising intermediate limit switch LS2 first. A stop signal is output to the hydraulic cylinder 21 from the rising control unit 31 that has detected this, and the operation of the lifter 14 is stopped.

  In this state, the movable bathtub 3 filled with hot water stops at the intermediate position where the head portion of the backrest portion 5b of the stretcher body 5 protrudes upward from the movable bathtub 3, and the person requiring assistance enters a bathing state. Therefore, the person requiring assistance mounted on the stretcher body 5 is in a bathing state and the head protrudes from the surface of the hot water, and there is no risk of accidentally swallowing or submerging the hot water. Further, when the assistant raises the movable bathtub 3, the assistant may perform other work while pressing the ascending button 37, and the assistant can move even if the assistant keeps an eye on the person who needs assistance mounted on the stretcher body 5. Since the bathtub 3 always stops at the intermediate position, there is no risk that the person requiring assistance will be submerged.

If the person requiring assistance is large, for example, the hot water surface may be lower than the shoulder of the person requiring assistance at the middle position where the movable bathtub 3 is raised. In this case, the hydraulic cylinder 21 is turned on by pressing the raising switch 37 again. The movable bathtub 3 is further raised from the middle position of the lift by driving to raise the hot water surface. And if the other axial part 18b moves to the one axial part 18a side further along the lower table 15 by the raise of the movable bathtub 3, the hydraulic cylinder 21 will be stopped by hitting the rising end limit switch LS1, and the movable bathtub 3 will be stopped. Is stopped at the rising end position shown in FIG.
In this state, a part of the head portion of the backrest portion 5b of the stretcher main body 5 protrudes from the movable bathtub 3, and a large caregiver can be bathed on an appropriate hot water surface. Alternatively, the stretcher body 5 can be stopped at an arbitrary height position before reaching the ascending end position by releasing the ascending button 37.

Next, when the person in need is withdrawn from the elevating bathtub 1 after bathing is completed, the hydraulic cylinder 21 is contracted by pressing the lowering button 38 of the operation unit 36 so that the first arm unit 18 and the second arm unit 19 are moved in one direction. The shafts 18a and 19a are lowered while being rotated downward. In addition, the other shaft portions 18 b and 19 b slide along the lower table 15 and the upper table 16 in a direction away from the one shaft portions 18 a and 19 a, and the upper table 16 maintains a parallel state with the lower table 15. The movable bathtub 3 also descends by descending.
Then, when the descent of the movable bathtub 3 proceeds, the lowering intermediate operating piece 27 provided on the upper table 16 hits the lowering intermediate limit switch LS4 provided on the lower table 15. At this time, when the cart 4 of the stretcher is locked to the locking portion 10 of the fixed bathtub 2, the detection signal from the lock detection unit 12 is input to the lowering control unit 32. Continue the descent of 3.

Then, when the lower end actuating piece 26 provided on the upper table 16 hits the lower end limit switch LS3, a stop signal is output from the lowering control unit 32, the hydraulic cylinder 21 is stopped, and the upper table 16 and the movable bathtub 3 are moved. Stop.
Then, the movable bathtub 3 stops at the lowered position as shown in FIG. 2, and the upper portions of the stretcher body 5 and the support portion 6 are exposed to the upper portion of the movable bathtub 3. In this state, the stretcher body 5 can be removed from the support 6 and transferred to the stretcher carriage 4. In this way, a person who needs to finish bathing can leave the bathtub 1.

Further, when the cart 4 is not locked due to the carriage 4 of the stretcher being detached from the locking portion 10 of the fixed bathtub 2 when the movable bathtub 3 is lowered, the detection signal of the lock detection unit 12 is lowered. 32 is not input. In this case, the lowering intermediate operating piece 27 provided on the upper table 16 hits the lowering intermediate limit switch LS4 provided on the lower table 15, whereby the drive of the hydraulic cylinder 21 is stopped, the lifter 14 is stopped, and the upper table 16 is stopped. And the descent of the movable bathtub 3 stops.
Then, the movable bathtub 3 stops at the lowering intermediate position as shown in FIG. 8, the backrest portion 5 b of the stretcher body 5 is exposed at the upper portion of the movable bathtub 3, and the seating portion 5 a is hidden by the movable bathtub 3. Therefore, the stretcher body 5 cannot be removed from the lift bathtub 1. Since the cart 4 is not fixed to the fixed bathtub 2, it is possible to prevent the stretcher body 5 from being accidentally transferred from the support base 6 to the outside of the movable bathtub 3 and falling. In addition, for example, a person who needs to be in trouble during bathing can be removed from the stretcher body 5 of the elevating bathtub 1 and carried outside.

As described above, according to the safety system in the lift bathtub 1 according to the present embodiment, when the movable bathtub 3 is lifted during bathing, the lift intermediate limit switch LS2 stops the lifted intermediate position below the lifted end position by the lift intermediate limit switch LS2. Even if the assistant is doing other work when the bathtub is lifted and he turns away from the assistant who is mounted on the stretcher body 5, the movable bathtub 3 rises to the rising edge and the assistant needs to drink hot water. It can be kept in a bath without being submerged. And the movable bathtub 3 can be further raised to a raise end position as needed.
In addition, when the movable bathtub 3 is lowered after the bathing is finished, if the cart 4 of the stretcher is not locked to the locking portion 10 of the fixed bathtub 2, the lowering intermediate limit switch is set to the lowering intermediate position above the lowering end position. It can be stopped at LS4. Thereby, since the stretcher main body 5 cannot be transferred to the outside of the movable bathtub 3, it can be prevented from being accidentally transferred from the support base 6 to the outside of the movable bathtub 3 and dropped. In addition, for example, a person who needs to be in trouble during bathing can be removed from the stretcher body 5 of the elevating bathtub 1 and carried outside.
Further, when the carriage 4 is locked to the locking portion 10 of the fixed bathtub 2, the movable bathtub 3 is lowered to the lower end position without stopping at the lowering intermediate position, and the stretcher body 5 is removed from the support base 6. The stretcher main body 5 carrying the new bather can be transferred to the support base 6.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and can be appropriately changed without departing from the scope of the present invention.
For example, in the above-described embodiment, four types of limit switches LS1, 2, 3, and 4 are provided for stopping the movable bathtub 3 when ascending and descending. The rising end switch LS1 and the rising intermediate switch LS2 are not necessarily provided. In this case, the movable bathtub 3 can be appropriately raised to a height by continuing to push the raising button 37.
In the above-described embodiment, the limit switches LS1, 2, 3, and 4 are provided in order to stop the movable bathtub 3 of the elevating bathtub 1 when moving up and down. However, the limit switch LS is not limited, and an appropriate switch such as a light detection switch is provided. Can be adopted.

In the above-described embodiment, the lower end operating piece 26 and the lowering intermediate operating piece 27 are installed on the upper table 16, and the lower end limit switch LS3 and the lowering intermediate limit switch LS4 are installed on the lower table 15. Conversely, the lower end operating piece 26 and the lower intermediate operating piece 27 may be installed on the lower table 15, and the lower end limit switch LS 3 and the lower intermediate limit switch LS 4 may be installed on the upper table 16.
Further, the rising end limit switch LS1 and the like are ascending end stopping means, the rising intermediate limit switch LS2 and the like are rising intermediate stopping means, the falling end limit switch LS3 and the like are falling end stopping means, and the falling intermediate limit switch LS4 and the like are falling intermediate stop. Each means is configured.
Moreover, in this Embodiment of this invention, although the stretcher (stretcher) was demonstrated as a bathing unit, it replaced with the stretcher and the wheelchair for bathing in which the chair part which can be inclined to the trolley | bogie 4 was provided detachably. The present invention can also be adopted for such as. In this case, the stretcher main body 5 and the chair portion such as a bathing wheelchair constitute a mounting portion.

DESCRIPTION OF SYMBOLS 1 Lifting bathtub 2 Fixed bathtub 3 Movable bathtub 4 Cart 5 Stretcher main body 6 Support base 10 Locking part 12 Locking detection part 14 Lifter 15 Lower table 16 Upper table 18 First arm part 19 Second arm part 18a, 19a One shaft part 18ba, 19b The other shaft
20 Support shaft 21 Hydraulic cylinder 26 Lowering end operating piece 27 Lowering intermediate operating piece 29 Safety device 30 Control unit 31 Ascent control unit 32 Lowering control unit LS1 Ascent end limit switch LS2 Ascent end limit switch LS3 Ascent end limit switch LS4 Lowering end limit switch

Claims (4)

In the elevator tub that allows the bather to enter and exit by raising and lowering the movable bathtub while holding the mounting part on which the bather is mounted on the support base in the elevator tub,
A lock detection unit that detects that the carriage that receives the mounting unit is locked to the lift tub, and when the lock detection unit detects that the carriage is not locked, A descent intermediate stop means for stopping the mounting portion at a descent intermediate position higher than a descent end position where entry and exit are possible.   When lowering the movable bathtub, a lowering control unit that lowers the mounting unit to the lower end position without stopping by the lowering intermediate means when the lock detection unit confirms that the carriage is in a locked state. The safety system of the raising / lowering bathtub described in Claim 1 provided.   An upper table that can be moved up and down with respect to the lower table is connected to the movable bathtub, and a lowering intermediate stopping means and a lowering end stopping means are provided on one of the upper table and the lower table, and the lowering is operated to operate the lowering intermediate stop means on the other. 3. The apparatus according to claim 1, further comprising an intermediate actuating part and a descending end actuating part that actuates the descending end stopping means, wherein the descending intermediate actuating part turns on the descending intermediate stop means first when the movable bathtub is lowered. Lift bathtub safety system.   The safety system of the raising / lowering bathtub described in any one of Claims 1 thru | or 3 provided with the raising intermediate | middle stop means to stop at the raising intermediate position below a raising end position when raising the said movable bathtub.

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