JP3613613B2 - Transfer assistance device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a transfer assistance device, and more particularly, to a transfer assistance device suitable for transferring a patient who is in a state of being on a bed in a hospital or the like to an operating table, another bed, or the like.
[0002]
[Prior art]
As this type of transfer assistance device, for example, the one described in Japanese Patent Laid-Open No. 2001-37815 is known. FIG. 6 shows the configuration of this prior art.
[0003]
In the figure, 01 is a lower transfer plate, and one end is connected to a drive belt 02 that rotates by a drive mechanism (not shown). Reference numeral 03 denotes a lower transfer belt surrounding the lower transfer plate 01. Reference numeral 04 denotes an intermediate transfer plate whose one end is connected to the lower transfer plate 01 and whose connecting portion moves from one end side to the other end side of the lower transfer plate 01 as the lower transfer plate 01 moves. Reference numeral 05 denotes an upper transfer plate connected to the middle transfer plate 04. Reference numeral 06 denotes a pair of moving rollers having one end fixed to the drive belt 02 and moving in the direction opposite to the lower transfer plate 01. 07 is guided by a path extending from the lower part of the middle transfer plate 04 through the middle transfer plate 04 and the upper transfer plate 05 to the pair of moving rollers 06, and fixed at both ends. It is a belt. Reference numeral 08 denotes an upper transfer belt that is stretched between the upper transfer plate 05 and the pair of moving rollers 06.
[0004]
That is, in this prior art, the lower transfer plate 01 is reciprocated by rotating the drive belt 02 by the drive mechanism. By rolling the lower transfer belt 03 along with the reciprocating movement of the lower transfer plate 01, the connecting portion between the lower transfer belt 03 and the middle transfer belt 07 is moved from one end side of the lower transfer plate 01 to the other. The middle transfer plate 04 is reciprocated by moving to the end side. As the middle transfer plate 04 reciprocates, the upper transfer plate 05 is reciprocated.
[0005]
[Problems to be solved by the invention]
However, the above prior art has a problem that the device is complicated and the manufacturing cost is high due to the structure in which the driving belt 02 is rotated by a driving device such as a motor.
[0006]
In addition, when the lower transfer belt 03, the middle transfer belt 07, or the upper transfer belt 08 is bent due to long-term use, the power transmission efficiency from the drive mechanism to the belts 03, 07, 08 is reduced. There is a possibility that the belts 03, 07, 08 may come off from the moving roller 06 or other rollers.
[0007]
The present invention has been made paying attention to the above-mentioned problems, and the object of the present invention is to provide transfer assistance that can be manufactured at a low cost with a simple structure and that can be reliably transferred even when the belt is bent. To provide an apparatus.
[0008]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, in the invention according to claim 1 of the present invention, in the transfer assisting device for assisting the transfer operation by extruding the table on which the person is placed in the horizontal direction, the table is supported and the extruding direction is supported. A pneumatic actuator for pushing out the table, a base that supports the pneumatic actuator for pushing out the table, a table roller provided on the table, a fixed roller provided on the base, and a moveable relative to the base A roller, a belt stretched over the table roller, the fixed roller and the moving roller, and a belt adjusting pneumatic actuator for reciprocating the moving roller in a direction of loosening and tensioning the belt. The arrangement of the roller, fixed roller and moving roller When the tension is tension acts extrusion direction opposite the direction of the force of the table to the table rollers, the table is characterized by being configured to move the extrusion direction in the opposite direction.
[0009]
According to a second aspect of the present invention, in the transfer assisting device according to the first aspect, the table has a plurality of rotating bodies having a rotation axis perpendicular to the pushing direction of the table and rotating in the vertical direction. It is characterized by comprising.
[0010]
According to a third aspect of the present invention, in the transfer assisting device according to the first or second aspect, a plurality of the belt adjustment pneumatic actuators are set, and each belt adjustment pneumatic actuator has a displacement of a pushing amount of the table. It is characterized in that a rack and pinion type positioning means is provided.
[0011]
According to a fourth aspect of the present invention, in the transfer assisting device according to any one of the first to third aspects, the base extends from the base toward the pushing-out direction of the table and abuts against the floor surface. It is characterized by comprising a fall prevention means for supporting
[0012]
According to a fifth aspect of the present invention, in the transfer assistance device according to any one of the first to fourth aspects, the pneumatic actuator for belt adjustment is a rodless cylinder.
[0013]
【The invention's effect】
In the present invention, when the moving roller is moved in the direction of loosening the belt tension, the table is pushed out in the horizontal direction by the pressing force of the table pushing pneumatic actuator. On the other hand, when the moving roller is moved in the direction of tensioning the belt against the pressing force of the table pushing pneumatic actuator, the table is pulled to the base side. By combining these operations, it is possible to perform an operation of placing a person who is lying on the bed on the table, or an operation of transferring the person who is placed on the table to another place.
[0014]
That is, the transfer assisting device of the present invention has a simple structure in which the table is pressed by the table pushing pneumatic actuator and the moving roller is reciprocated by the belt adjusting pneumatic actuator, and the assisting device does not perform complicated control. Work can be done.
[0015]
In the present invention, only a pneumatic actuator is used as a power source. In general, pneumatic actuators have a high output / weight ratio, are advantageous for downsizing and weight reduction of the system, and are inexpensive and easy to construct. Therefore, compared with conventional products using motors. The structure can be simplified, and the manufacturing cost can be kept low and the manufacturing cost can be reduced.
[0016]
In addition, since the table is pushed out by using air pressure, it is suitable for scenes that require the flexibility of transfer assistance. For example, by setting the pushing force of the pneumatic actuator for table extrusion as small as possible within the range where the table can be pushed out, even if the table comes into contact with the human body when the table is pushed out, There is no risk of injury.
[0017]
Further, since tension is always generated in the belt by the pneumatic actuator for table extrusion, the belt does not loosen even when the belt is bent due to long-term use. Therefore, it is possible to prevent malfunction or failure due to the deflection of the belt.
[0018]
In the invention according to claim 2, when the table is pushed out and a person is placed on the table, the rotating body rotates in a direction opposite to the pushing direction of the table due to friction with the person, so that the work of placing the person is performed smoothly. Can do. On the other hand, when the table is pulled down and the person placed on the table is lowered, the rotating body rotates in a direction opposite to the direction in which the table is pulled in due to frictional force with the person, so that the operation of lowering the person can be performed smoothly. Furthermore, since a large frictional force is not generated between the person and the table, the person is not injured.
[0019]
According to the third aspect of the present invention, the amount of movement of the moving roller by each belt adjusting pneumatic actuator can be kept constant by engaging the rack and the pinion, and the table can be pushed out uniformly.
[0020]
According to the fourth aspect of the present invention, the apparatus can be prevented from falling when the table is pushed out and a person is put on or when the person is lowered.
[0021]
In the invention described in claim 5, by using a rodless cylinder, it is possible to reduce the size of the apparatus because about half the space is required as compared with a normal air cylinder.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
In the following, an embodiment for realizing the transfer assistance device of the present invention will be described with reference to the drawings.
First, the configuration will be described.
FIG. 1 is a side view showing a transfer assistance device according to the present embodiment, and FIG. 2 is a plan view showing the transfer assistance device according to the present embodiment. In addition, since the transfer assistance apparatus of this Embodiment is a left-right symmetric shape seeing from the length direction, only one side is demonstrated.
[0023]
In the figure, 1 is a slide roller table, 2 is a pneumatic actuator for table extrusion, 3 is a table roller, 4a to 4f are fixed rollers, 5a to 5c are belt locking devices, 6 is a moving roller, 7 is a belt, and 8 is rodless. A cylinder (pneumatic actuator for belt adjustment), 9 a position adjusting device, 10 a moving caster, 11 an air reserve tank for replenishing air, 12 an air compressor, 13 an operation box, 14 an overturn prevention device, 15 A base 16 constituting the frame of the apparatus is a sensor.
[0024]
The slide table 1 is large enough to allow an adult to ride in a leaning state. The table roller 3 is rotatably provided at the end of the slide table 1 in the pushing direction. The belt 7 is wound around the table roller 3 and the fixed roller 4a provided at the rear end of the cylinder tube of the table pushing pneumatic actuator 2.
[0025]
Between the table roller 3 and the fixed roller 4a, eight pipes 1b are arranged at equal intervals. Both ends of these pipes 1b are rotatably supported by two-stage extension linear rails 1a that are cantilevered by the base 15. Further, both ends of the table roller 3 are supported by rod ends of the table pushing pneumatic actuator 2.
[0026]
The table pushing pneumatic actuator 2 is a saddle type actuator in which a rod extends in two stages, and a cylinder tube is supported on the base 15. The table pushing pneumatic actuator 2 is always urged in the direction of pushing out the rod by the low pressure air. As a result, the slide table 1 is always pressed in the pushing direction (the arrow direction in the figure).
[0027]
All of the fixed rollers 4 a to 4 f are fixed to the base 15, and the belt 7 is wound around. As described above, the fixed roller 4a is provided at the rear end of the cylinder tube of the table pushing pneumatic actuator 2. The fixed roller 4b is provided directly below the fixed roller 4a. The fixed roller 4c has the same height as the fixed roller 4b and is provided on the side of the slide table 1 in the pushing direction (right side in FIG. 1) with respect to the fixed roller 4b. Above this fixed roller 4c, three fixed rollers 4d, 4e, 4f are provided in order from the top.
[0028]
The belt lock devices 5a to 5c are fixed to the base 15 in proximity to the three fixed rollers 4d, 4e, and 4f located below the table roller 3, respectively. These belt lock devices 5a to 5c have a substantially U-shaped block attached to the tip of a rod of an air cylinder. By extending the rod and pressing the block against the fixed rollers 4d, 4e and 4f, the belt 7 Is to prevent the movement of. The belt lock devices 5a to 5c are supplied with air from the air compressor 12 through a regulator and an air filter (not shown).
[0029]
The moving roller 6 reciprocates in parallel with the moving direction of the slide table 1 and adjusts the tension of the belt 7 to adjust the amount of extrusion of the slide table 1. Two are arranged side by side in the vertical direction. A belt 7 is stretched around these moving rollers 6 with the fixed roller 4f interposed therebetween.
[0030]
The rodless cylinder 8 is for moving the moving roller 6 in parallel. A cylinder 8 a is arranged in parallel with the moving direction of the slide table 1, and both ends thereof are fixed to the base 15. The moving roller 6 is attached to a slider 8b that reciprocates in the cylinder 8a. The rodless cylinder 8 is also supplied with air from the air compressor 12 as in the belt lock devices 5a to 5c.
[0031]
The position adjusting device 9 adjusts the positions of the two rodless cylinders 8. The rack 9 a is provided on the base 15 side and the pinion 9 b is provided on the rodless cylinder 8 side.
[0032]
The overturn prevention device 14 is for preventing the device from overturning, and an air cylinder 14b extending toward the floor surface is provided at the rod tip of the air cylinder 14a extending from the base 15 toward the push-out direction of the slide table 1. It becomes the composition. These two air cylinders 14 a and 14 b are supplied with air from the air compressor 12 in the same manner as the belt lock devices 5 a to 5 c and the rodless cylinder 8 described above.
[0033]
The operation box 13 is used to supply air to the rodless cylinder 8 and set / release the overturn prevention device 14 by operating a switch.
[0034]
The sensor 16 is for detecting the position of the patient, and is attached to the tip of the pneumatic actuator 2 for pushing out the table.
[0035]
Next, the operation will be described.
[Restoring the patient in place]
The slide table 1 is assumed to be in the original position shown in FIG.
First, the apparatus is moved to the side of the bed on which the patient is lying and the fall prevention device 14 is set. That is, the rod of the air cylinder 14a is extended, and then the rod of the air cylinder 14b is extended to bring the rod tip into contact with the floor surface.
[0036]
As shown in FIG. 3, the slider 8 b of the rodless cylinder 8 is moved in the pushing direction of the slide table 1 with the belt lock device 5 a turned on and the belt lock devices 5 b and 5 c turned off. Then, the belt 7 bends and the slide table 1 is pushed out to the bed side by the pressing force of the table pushing pneumatic actuator 2.
The slide table 1 may be pushed out with the belt lock device 5b turned on and the belt lock devices 5a and 5c turned off.
[0037]
After the pushing out of the slide table 1, the belt lock device 5a is turned on, the belt lock devices 5b and 5c are turned off, and the slide table 1 is drawn.
At this time, the movement of the belt 7 from the fixed roller 4e to the moving roller 6 side is blocked by the belt lock device 5a, so that the deflection of the belt 7 is fixed roller 4a → fixed roller 4b → fixed roller 4c → moved. Move to roller 6. That is, since the belt 7 moves in the direction of placing the patient on the slide table 1 and the pipe 1b of the slide table 1 rotates in the moving direction of the belt 7, the patient can be placed easily.
[0038]
Next, as shown in FIG. 4, when the patient's body crosses the sensor 16, that is, when the patient is completely placed on the pipe 1b of the slide table 1, the belt lock device 5b is turned on. The slide table 1 is pulled in with the belt lock devices 5a and 5c turned off.
[0039]
At this time, the amount of deflection of the belt 7 is the same above and below the fixed roller 4f locked by the belt lock device 5b, so that the patient does not move on the slide table 1 when the slide table 1 is pushed out. Therefore, it is possible to prevent the patient from falling off the pipe 1b.
[0040]
The slide table 1 is pushed out by two rodless cylinders 8. The rodless cylinder 8 is provided with a position adjusting device 9 including a rack 9a and a pinion 9b. The amount of movement of the rodless cylinder 8 is the same, and the amount of extrusion of the slide table 1 is always kept uniform.
[0041]
[When lowering the patient to the specified position]
First, this device is placed beside the bed, and the fall prevention device 14 is set.
Next, as shown in FIG. 5, the slide table 1 is pushed out to the bed side with the belt lock device 5b turned on and the belt lock devices 5a and 5c turned off.
[0042]
At this time, the amount of deflection of the belt 7 is the same above and below the fixed roller 4f locked by the belt lock device 5b, so that the patient does not move on the slide table 1 when the slide table 1 is pushed out.
[0043]
After the slide table 1 is pushed out, the belt lock device 5c is turned on, the belt lock devices 5a and 5b are turned off, and the slide table 1 is pulled.
[0044]
At this time, the movement of the belt 7 from the fixed roller 4c side to the moving roller 6 is blocked by the belt lock device 5c, so that the deflection of the belt 7 is the table roller 3 → the fixed roller 4d → the fixed roller 4e → the movement. Move to roller 6. That is, since the belt 7 moves in the direction of lowering the patient from the slide table 1 to the bed, and the pipe 1b of the slide table 1 rotates in the moving direction of the belt 7, the patient can be lowered easily.
[0045]
Next, the effect will be described.
In the transfer assistance device of the present embodiment, the effects listed below can be obtained.
[0046]
(1) A simple structure in which the slide table 1 is biased in the push-out direction with a low pressure by the table pushing pneumatic actuator 2 and the moving roller 6 is reciprocated by the rodless cylinder 8 to adjust the tension of the belt 7. Therefore, it is possible to perform the assistance work by moving the slide table 1.
[0047]
(2) Since tension is always generated on the belt 7 by the pneumatic actuator 2 for table extrusion, the belt 7 does not loosen even when the belt 7 is bent due to long-term use. Therefore, it is possible to prevent malfunction or failure due to the deflection of the belt 7.
[0048]
(3) Since the slide table 1 is composed of a plurality of pipes 1b, no large frictional force is generated between the patient and the slide table 1b, so that the transfer operation can be performed without placing a burden on the patient.
[0049]
(4) Since the position adjusting device 9 including the rack 9a and the pinion 9b is provided in the two rodless cylinders 8, the amount of extrusion of the slide table 1 can be made uniform on the left and right.
[0050]
(5) Since the fall prevention device 14 including the two air cylinders 14a and 14b is provided, the fall of the device can be prevented.
[0051]
(Other embodiments)
As described above, the present invention has been described based on the embodiment. However, the specific configuration of the present invention is not limited to the embodiment, and the present invention is not limited even if there is a design change or the like without departing from the gist of the invention. Included in the invention.
[Brief description of the drawings]
FIG. 1 is a side view showing a transfer assistance device according to the present embodiment.
FIG. 2 is a plan view showing a transfer assistance device according to the present embodiment.
FIG. 3 is a side view showing an operation when placing a patient.
FIG. 4 is a diagram showing an operation when a patient is placed and returned to the original position.
FIG. 5 is a side view showing an operation when a patient is lowered.
FIG. 6 is a side view showing a conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Slide table 1a Two step extension linear rail 1b Pipe 2 Pneumatic actuator for table extrusion 3 Table rollers 4a-4f Fixed rollers 5a-5c Belt lock device 6 Moving roller 7 Belt 8 Rodless cylinder 8a Cylinder 8b Slider 9 Position adjustment device 9a Rack 9b Pinion 10 Casters 11 Air reserve tank 12 Air compressor 13 Operation box 14 Fall prevention device 14a Air cylinder 14b Air cylinder 15 Base 16 Sensor

Claims (5)

In the transfer assistance device that pushes out the table on which the person is placed in the horizontal direction and assists the transfer work,
A pneumatic actuator for extruding the table that supports the table and biases it in the pushing direction;
A base that supports the pneumatic actuator for extruding the table;
A table roller provided on the table;
A fixed roller provided on the base;
A moving roller movable relative to the base;
A belt stretched over the table roller, fixed roller and moving roller;
A pneumatic actuator for belt adjustment that reciprocates the moving roller in a direction of loosening and tensioning the belt;
When the tension of the belt is tensioned by the moving roller, the table roller, fixed roller and moving roller are placed in a direction opposite to the pushing direction of the table, and the table moves in the opposite direction to the pushing direction. A mobile assistance device, characterized in that it is set to do so. In the transfer assistance apparatus of Claim 1,
A transfer assisting device, characterized in that the table is composed of a large number of rotating bodies having a rotation axis perpendicular to the pushing direction of the table and rotating in the vertical direction. In the transfer assistance apparatus of Claim 1 or Claim 2,
Set a plurality of pneumatic actuators for belt adjustment,
A transfer assisting device, wherein each belt adjusting pneumatic actuator is provided with a rack and pinion type positioning means for preventing a displacement of the push-out amount of the table. In the transfer assistance apparatus of any one of Claim 1 thru | or 3,
A transfer assisting device, comprising: a fall prevention means that extends from the base toward the pushing-out direction of the table and supports the base by contacting the floor surface. In the transfer assistance apparatus of any one of Claim 1 thru | or 4,
The transfer assisting device according to claim 1, wherein the belt adjusting pneumatic actuator is a rodless cylinder.

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