JP3375837B2 - Elevating wheelchair with safety device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevating wheelchair with a safety device for elevating a seat portion when a person with a physical disability in a bathing position, a nursing elderly person, etc. is put on a wheelchair and washed.

[0002]

2. Description of the Related Art Japanese Patent Publication No. 5-83254 of the prior art discloses a wheel, a traveling carriage, a chair frame, a support shaft, a chair body, a backrest, a seat portion, a chair base portion, A wheelchair including a footrest portion, a shaft, a chair base rotation means, a footrest angle increasing rotation means, a lifting means, an X-shaped link, a hydraulic cylinder, and a lock pedal is disclosed. There is.

[0003]

The lock pedal in the above-mentioned conventional device is a foot-operated type, and it is possible that the lock pedal is forgotten to be applied. If the lock pedal is forgotten, the bogie portion is inadvertently moved. It is dangerous that the seat part of

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned drawbacks, and to provide an elevator wheelchair with a safety device which enables the elevator wheelchair to be operated reliably and which is safe.

[0005]

[Means for Solving the Problems] That is, the present invention provides a movable carriage (1), a seat (2) on which a bather sits, and a seat (2) supported by the carriage (1). In the elevating wheelchair (5) for bathing, which comprises the elevating mechanism section (3) for elevating and lowering, when the seat section (2) reaches a height position where it can bathe,
Then, the elevating frame (7) of the elevating mechanism part (3) is lowered to the lower limit position.
When it hits, the stop mechanism (11) is released and the trolley part (1)
When the seat part (2) is not at a height where bathing is possible , that is, the lifting frame (7) is lowered to the lower limit position.
When not in use, the stop mechanism (11) hits the floor,
A lifting wheelchair with a safety device, characterized in that a safety device (10) for preventing movement of the portion (1) is provided. or,
When taking a bath, the seat part (2) of the lifting wheelchair (5) is separated from the lifting mechanism part (3) and only the seat part (2) enters the bathtub,
The trolley part (1) and the lifting mechanism part (3) are a lifting type wheelchair (5) located outside the bathtub, and when the seat part (2) is not in a height position allowing bathing, the trolley part (1) At least a stop mechanism (11) for preventing forward movement is provided. Further, the lifting switch (9) for lifting the lifting mechanism (3)
The detector (4) is a momentary type that moves up and down only when the switch (9) is pressed, and the detector (4) provided in the carriage (1) is between a height position where the seat (2) can bathe and a predetermined position. When the vehicle is in the detection section, the conduction signal from the detector (4) causes the lifting mechanism section (3) to continuously operate, and the seat section (2) passes through the detection section.
When the seat part (2) reaches a height where bathing is possible, the stop mechanism (11) is released and the trolley part (1) becomes movable, and when the seat part (2) reaches the outside of the detection section. , The stop mechanism (11) is activated to prevent movement of the carriage (1).

[0006]

Operation: The trolley 1 is movable, and the lifting mechanism 3 is
The seat part 2 supported by the dolly part 1 on which the bather sits is moved up and down. The safety device 10 warns the movement prohibition of the trolley unit 1 and / or prevents the movement of the trolley unit 2 when the seat unit 2 is not at a height position where a bath can be taken.

When taking a bath, the seat portion 2 of the lifting wheelchair 5 is
Separated from the lifting mechanism 3. Lifting wheelchair 5 to bathtub 17
When joined to, the dolly unit 1 and the lifting mechanism unit 3 reach the outside of the bathtub 17, and only the seat portion 2 enters the bathtub 17. Stop mechanism 11
Prevents at least forward movement of the trolley portion 1 when the seat portion 2 is not in a height position allowing bathing.

The lifting switch 9 is a momentary type, and the lifting mechanism section 3 operates only when the lifting switch 9 is pushed. The detector 4 conducts when the seat portion 2 is in the detection position between the height position where the seat 2 can bathe and a predetermined position, and the elevator mechanism 3 is automatically operated to allow the seat portion 2 to pass through the detection interval. As a result, the stop mechanism 11 is released and the trolley unit 1 is movable when the seat unit 2 reaches a height position where it is possible to take a bath, and when the seat unit 2 is outside the detection section, the stop mechanism 1 is released.
1 operates to prevent the carriage unit 1 from moving.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A liftable wheelchair 5 according to an embodiment of the present invention shown in FIGS. 1 to 3 comprises a movable carriage portion 1, a seat portion 2 on which a bather sits, and a seat portion 2 supported by the carriage portion 1. It is composed of a lifting mechanism section 3 for lifting and lowering.

The trolley unit 1 is provided with a detector 4 which is a limit switch that conducts electricity when the seat unit 2 is between a height position where the seat unit 2 can bathe and a predetermined position, that is, in the detection section. The seat part 2 is placed so as to be separable from the elevating mechanism part 3, and when the elevating wheelchair 5 is pushed into the bathtub 17 when taking a bath, the seat part 2 is separated from the elevating mechanism part 3, and only the seat part 2 is in the bathtub. Then, the carriage 1 and the lifting mechanism 3 are inserted under the bottom wall 18 of the bathtub.

The elevating mechanism 3 comprises an X frame 6 provided on the carriage 1, an elevating frame 7 provided above the X frame 6, and an electric actuator 8 for raising and lowering the X frame 6. The lifting switch 9 is the switch 9
It is a momentary type that operates the lifting mechanism 3 only when is pressed.

Lower limit position of the elevating frame 7 (set to height position a)
And a predetermined position approximately 10 mm above the lower limit position (referred to as a height position b) as a detection section (section consisting of the difference between the position a and the position b), and the elevating frame 7 is located in the detection section. When present, the detector 4 is pushed down by the X frame 6 to operate. The output of the detector 4 gives the electric actuator 8 an instruction for automatic operation. The elevating mechanism section 3 is not limited to the one including the X frame 6 and the electric actuator 8 and may be replaced with another appropriate structure for elevating the elevating frame 7.

The safety device 10 prevents the movement of the carriage 1 when the seat 2 is not at a height where the bath can be bathed. Specifically, the safety mechanism 10 stops the forward movement of the carriage 1. It is composed of 11.

The stop mechanism 11 has a shaft 16 at the front end of the carriage 1.
The stopper arm 12 is rotatably supported by, and the lower portion of the stopper arm 12 is normally urged by the spring 13 so as to be in a suspended state. The lower part of the stopper arm 12 is provided with an appropriate rotation preventing tool so as not to rotate from the hanging position toward the caster 23. The upper part of the stopper arm 12 projects into the ascending / descending locus of the ascending / descending frame 7, and when the ascending / descending frame 7 descends, it abuts against the ascending / descending frame 7 and is pushed down. Move.

Another embodiment of the safety device 10 is additionally provided as an alarm device 14 which gives an alarm for prohibiting movement of the trolley part 1 when the seat part 2 is not at a height where bathing is possible. 1 in FIG.
Reference numeral 5 is an operation handle, 20 is a support member that supports the seat portion 2 in a separable manner, and 21 is a roller for easily moving the seat portion 2 on the bottom wall 18.

In using the embodiment, the caregiver
First, the seat portion 2 of the liftable wheelchair 5 is set to an appropriate height, a bather is placed on the wheelchair 5, and when the rider finishes riding, the lift mechanism portion 3 is operated to lower the seat portion 2 to the lower limit position. , Move to the washroom in the bathroom. Next, the seat portion 2 is raised to an appropriate height and washed. After cleaning, the seat part 2 is lowered to the lower limit position and moved toward the bathtub. Bathtub 1 with door 19 open
From the front of 7, the bather with the liftable wheelchair 5 is bathed 17
Put in.

When the liftable wheelchair 5 is pushed into the bathtub 17, the seat portion 2 comes into contact with the bottom wall 18, and then the seat portion 2 and the lift mechanism portion 3 are separated from each other, so that the seat portion 2 enters the bathtub 17. The lifting mechanism section 3 and the carriage section 1 reach below the bottom wall 18. Close the door 19, add hot water, and take a bath.

When the elevating wheelchair 5 is pushed into the bathtub 17 while facing the bathtub 17, the height of the seat portion 2 becomes suitable for the bathtub 17, that is, the elevating frame 7 is lowered to the lower limit position. When stopped, the stop mechanism 11 is released, and the carriage unit 1 can move freely. Specifically, the upper part of the stopper arm 12 is pushed down by the elevating frame 7 and is pushed down, the stopper arm 12 pivots in the horizontal direction, the tip of the stopper arm 12 separates from the floor, and the carriage unit 1 can move forward freely. Become.

On the contrary, when the seat portion 2 is not at a suitable height with respect to the bathtub 17, that is, when the elevating frame 7 is not lowered to the lower limit position and the elevating frame 7 is slightly raised. The stop mechanism 11 is activated to prevent the carriage 1 from moving. Specifically, the upper part of the stopper arm 12 is separated from the elevating frame 7, the stopper arm 12 is in a hanging state, the tip of the stopper arm 12 hits the floor, and the forward movement of the trolley part 1 is blocked.

When the elevating frame 7 descends and reaches the detection section, the elevating mechanism section 3 automatically operates, and the elevating frame 7 passes through the detection section and reaches the lower limit position. However, if the trapping prevention device (not shown) operates, the lifting mechanism 3
Emergency stop even if is operating automatically. Due to the above-described automatic lifting, the lifting frame 7 does not stop immediately before the lower limit position when the lifting switch 9 is operated, and the stopper arm 12 is released but the seat portion 2 does not reach the lower limit position. Is eliminated.

When the elevating frame 7 rises and is in the detection section,
The elevating frame 7 is automatically raised to a predetermined height,
The lift switch 9 does not stop at a position slightly above the lower limit position. Temporarily, it is misunderstood that the elevating frame 7 is at a slightly elevated position and is at the lower limit position.
In order to prevent such a situation, the lifting frame 7
Does not stop.

[0022]

According to the present invention described in claim 1, the seat portion 2 is provided.
When there is no height at which the bath can be bathed, a warning is given to prohibit the movement of the carriage 1 or a safety device 10 is provided to prevent the movement of the carriage 1. Therefore, the warning corrects the seat 2 to a proper position. Or, since the trolley part 1 does not move, the improper position of the seat part 2 is known, the seat part 2 is corrected to the proper position, and the bath can be properly bathed. Therefore, the caregiver
This is convenient because it is possible to eliminate a situation in which the seat portion 2 is accidentally bumped into the bathtub in an incompatible state to injure the bather or break the equipment.

According to the second aspect of the present invention, since the stop mechanism 11 is provided to prevent at least forward movement of the carriage 1 when the seat 2 is not at a height where bathing is possible, the carriage 1 moves forward. Without this, it is possible to know the inappropriate position of the seat portion 2 from this, correct the seat portion 2 to the proper position, and appropriately take a bath. Therefore, it is possible to eliminate a situation in which a caretaker accidentally hits the seat portion 2 against the bathtub in a non-conforming state to injure the bather or break the equipment, which is convenient.

According to the present invention as set forth in claim 3, when the seat portion 2 is in the lower limit position and the detection section of the predetermined position, the elevating mechanism section 3 automatically operates so that the seat section 2 detects the detection section. Since it passes through, the lifting wheelchair 5 can be operated reliably and safely. Temporarily, the seat part 2 does not stop at a slightly upper position of the lower limit position and is erroneously recognized as the lower limit position, and by erroneously recognizing that the seat part 2 is at the lower limit position, the liftable wheelchair 5 is moved and the seat part 2 and the bather's Lower limb bath 1
This is convenient because it can eliminate a dangerous situation such as hitting 7.

[Brief description of drawings]

FIG. 1 is a right side view showing a time when an elevating frame is at a lower limit position (a height position where a bath can be taken) in an embodiment of the present invention.

FIG. 2 is a right side view in which the elevating frame is slightly raised in the detection section in the embodiment of the present invention.

FIG. 3 is a right side view of the lifting frame raised to the outside of the detection section in the embodiment of the present invention.

[Explanation of symbols]

1 dolly 2 seats 3 Lifting mechanism 4 detector 5 Lifting wheelchair 9 Lift switch 10 safety device 11 Stopping mechanism

Claims (3)

(57) [Claims] 1. A movable carriage (1), a seat (2) on which a bather sits, and a seat (2) supported by the carriage (1).
In elevating the bathing consisting a lifting mechanism for raising and lowering (3) the wheelchair (5), the seat portion (2) is high as possible bathing
Position, that is, the lifting frame of the lifting mechanism (3)
When (7) is lowered to the lower limit position, the stop mechanism (11)
When the carriage (1) is released, the carriage (1) can be moved freely, and the seat (2) is not in a height position for bathing , that is, the lifting frame
When (7) is not lowered to the lower limit position, the stop mechanism
(11) hits the floor and the carriage (1) is prevented from moving.
An elevating wheelchair with a safety device, characterized in that a safety device (10) is provided. 2. When taking a bath, the seat part (2) of the lifting wheelchair (5) is separated from the lifting mechanism part (3), and only the seat part (2) enters the bathtub, and the carriage part (1) and the lifting mechanism part. (3) is a lift-type wheelchair (5) located outside the bathtub, and when the seat (2) is not at a height that allows bathing, the carriage (1)
The lifting wheelchair with a safety device according to claim 1, further comprising a stop mechanism (11) for preventing at least forward movement of the wheelchair. 3. A lift switch (9) for moving up and down the lift mechanism (3) is a momentary type that moves up and down only when the switch (9) is pressed, and the carriage unit (1).
The detector (4) provided in the switch is conductive when the seat (2) is in the detection section between the height position at which the seat (2) can bathe and the predetermined position, and the lifting mechanism is driven by the conduction signal of the detector (4). It is assumed that the part (3) continuously operates, the seat part (2) passes through the detection section, and when the seat part (2) reaches a height position where the bath can be taken, the stop mechanism (11) is operated. When the carriage portion (1) is released so that the carriage portion (1) can be freely moved and the seat portion (2) reaches outside the detection section, the stop mechanism (11) is activated to prevent the movement of the carriage portion (1). The lifting wheelchair with a safety device according to claim 1.