JPH0262253B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a bed transfer device that can move a patient lying on a bed from the bed without placing any burden on the patient or the caregiver. .

BACKGROUND OF THE INVENTION Due to physical disabilities, some people require assistance in activities of daily living such as eating, bathing, and toileting, or in activities such as moving for medical treatment.

When transferring such a person from a bed to a moving means such as a stretcher or a wheelchair, it is common for an assistant to directly lift the patient or to use a device that suspends the patient.

However, the method in which the caregiver directly lifts the body places a heavy burden on the caregiver's body because it is done in an unnatural posture for the caregiver, and is often used in various facilities where this kind of assistance work is often repeated. This has become a serious problem, with many employees suffering from lower back pain.

In addition, even when using a device that suspends the patient, it is necessary to place a special mat-like device above the patient's bed in advance, or to lift the patient slightly and place a similar device between the bed and the patient. This requires operations such as inserting the device between the patient and the patient, and the burden on the caregiver cannot be significantly reduced.

In response to this situation, the following bed transfer device has already been proposed.

That is, an insertion plate is provided on one horizontal board and is movable horizontally with respect to this board, and this insertion board is inserted between the body of the patient to be transferred and the bed on which the patient is placed. The patient placed on the board is transferred onto the board together with the insertion board.

Such a bed transfer device is mounted on a transport means such as a trolley, and can easily move a patient on the bed transfer device.

Problems to be Solved by the Invention In the bed transfer device having the above configuration,
Conventionally, no particular consideration has been given to the positioning or moving direction of the insertion plate. I mean,
In the above-mentioned configuration, the insertion plate is forcibly moved by its drive device, so it always maintains its normal direction and enters under the patient, and also places the patient and retreats. It was considered a thing.

However, patients transferred by the device
Needless to say, everyone has a different physique, and the shape of the human body is irregular, so the load applied to the transfer device is unevenly distributed.

Furthermore, the position of the patient before being picked up on the transfer device;
The position of the patient on the transfer device during the holding operation is not constant, and there is also a possibility that the patient on the transfer device may move. Therefore, the load distribution over various parts of the bed transfer device always changes irregularly.

On the other hand, what defines the position of the insertion plate that moves when picking up a patient is only the driven part of the insertion plate by the means for driving the insertion plate in the forward and backward directions.For example, when an endless belt or the like is used,
It is unreasonable to expect that the belt, which is a flexible member, will regulate the posture of the insertion plate under a large load.

FIG. 5 shows one of the drive mechanisms for the insertion plate as described above.
An example will be shown schematically, which includes two pairs of pulleys 16 and 17 placed one behind the other on the side of the substrate 1, and an endless belt 18 stretched around the pulleys. is connected to the insertion plate 2, so that when the pulley 16 or 17 is rotated by a motor or the like, the insertion plate moves forward or backward.

In FIG. 5a, the insertion plate 2 is shown inclined with respect to the direction of movement, but the endless belt 18
Considering that the belt is a flexible member and that the endless belt 18 and the pulleys 16 and 17 slip, it is easy to imagine that such a situation could occur.

Moreover, as is clear from FIG. 5b, the insertion plate 2
There is no member that defines this in the vertical direction, and it is possible that a part of the insertion plate 2 may move away from the board due to elongation of the belt or the like.

If the insertion plate is tilted with respect to the direction of movement while moving forward or retracting, it may interfere with the function of the insertion plate drive device, or the insertion plate may lift up from the board and come off the drive device. It is possible that this may occur.

Furthermore, even if the drive mechanism for the insertion plate is made of rigid members such as a ball screw and a nut, the smooth movement of the insertion plate may be hindered due to the insertion plate attempting to move in irregular directions. This still leaves a problem in that it can be blocked.

If this occurs and movement of the insert plate is impeded, it may result in, if not permanent, failure of the device.
In the end, the caregiver picked up the patient and removed him from the transfer device, and then returned the transfer device to its normal state.
Furthermore, it is necessary to set the aforementioned holding device to the initial state and perform the holding operation again.

Further, as described above, when it is necessary to arrange the insertion plate drive device using an endless belt on both sides of the insertion plate, it is also possible that clothing or the like may be caught between the exposed endless belt and the pulley.

Such problems with the transfer device not only increase the burden on caregivers, but also cause the patient on the transfer device to be physically disabled. It's even dangerous.

Means for Solving the Problems The present invention provides a bed transfer device as described above, in which the insertion plate moves only in the advance/retreat direction while maintaining the correct orientation, and at the same time utilizes a guide means for regulating the direction of movement. The purpose is to configure the drive unit so that it can be hidden.

That is, according to the present invention, the present invention includes a horizontal substrate, an insertion plate that moves horizontally forward and backward on the horizontal substrate, and an insertion plate driving device, and the insertion plate has an upper plate and a lower plate that are separated from each other and stacked and integrated. The insertion plate drive device consists of a pair of pulleys (front and rear) that are set up on a horizontal board on both sides of the insertion plate, an endless belt is hung between the pair of pulleys, and a part of the belt is attached to the insertion plate. In a bed transfer device having a fixed configuration, the upper plate is extended on both sides of the lower plate, and a guide means having a channel-shaped cross section is fixedly installed on the horizontal substrate below the overhang, and the guide means is fixedly installed on the horizontal substrate. accommodating the insert plate drive between both vertical walls of the means;
In addition, there is provided a bed transfer device characterized in that the outer surface of one vertical wall of the guide means is slidably abutted against the side surface of the lower plate to define the advancing and retreating direction of the insertion plate.

Further, according to a preferred embodiment of the present invention, sliding means is provided at the sliding portion between the guide means and the insertion plate.

As described above, the present invention includes a lower belt that is wound around the lower plate to form a closed loop and is fixed at a portion to the front part of the substrate, and a belt that extends from the front edge of the upper plate. an upper belt that passes above and below the upper plate and is guided rearward; and an upper belt that is disposed in a fixed position with respect to the board so as to be located at the rear of the insertion plate, and that the upper belt passes over the upper plate. a first roller wound around the end side; and the upper belt, which is disposed at a fixed position with respect to the substrate so as to be located at the rear of the insertion plate, and passes between the upper plate and the lower plate. It is equipped with a second roller that winds the end portion side, and a device that is provided on each of the first and second rollers and feeds out and winds up the upper belt that is wound respectively. It can be advantageously applied to a bed transfer device.

Operation In the bed transfer device configured as described above, the moving direction of the insertion plate is regulated by the guide means, so that abnormal movement as described above cannot occur.

Further, since the insertion plate driving device is covered by the guide means having a channel-shaped cross section and the overhanging portion of the upper plate, dangerous situations such as getting clothing etc. caught in the insertion plate are also avoided.

The bed transfer device is thus able to perform its functions more fully.

Further, since the sliding portion between the guide means and the insertion plate is provided with a sliding means, the movement of the insertion plate is not hindered by the addition of the guide means.

Embodiments Hereinafter, embodiments of a bed transfer apparatus according to the present invention will be described with reference to the accompanying drawings. Note that what is described below is merely an example of the present invention, and does not limit the technical scope of the present invention in any way.

FIGS. 2 and 3 show an example of the configuration of a bed transfer device to which the present invention can be applied.

That is, the bed transfer device shown in FIG.
An insertion plate 2 is placed on the substrate 1, and is movable horizontally relative to the substrate 1. This insertion plate 2 is integrated with spacers 5 and 6 that are spaced parallel to each other and arranged on the front, rear, left and right sides of the insertion plate 2.
It is composed of an upper plate 3 and a lower plate 4.

Further, a pair of posts 7 and 8 are provided on both sides of the rear side of the horizontal substrate 1, and a pair of upper and lower rollers 9 and 10 are supported on these posts so as to be rotatable and lockable. Further, an upper belt 11 having one end wound around the upper roller 9 passes above the upper plate 3, goes around the front end of the upper plate 3, passes between the upper plate 3 and the lower plate 4, and then wraps the other end around the roller. It is wound up in 10.

On the other hand, the lower belt 12 is guided downward from the upper surface of the lower plate 4 around its both ends so as to form a closed loop around the lower plate, and is fixed to a fixing part 13 near the front of the horizontal board 1. .

Incidentally, one post 7 is provided with reversible motors 14 and 15 with braking mechanisms that independently rotate or lock the upper and lower rollers 9 and 10, respectively.

In addition, as shown in FIG. 3, on both sides of the horizontal board 1, there are two pairs of vertical fixed shafts arranged in front and back along the side surface of the insertion board 2, which are configured to rotate around vertical fixed shafts. Pulleys 16 and 17 are provided. An endless belt 18 is hung around each pair of pulleys, and a portion of the endless belt 18 is further fixed to the insertion plate 2.

On the other hand, a worm wheel 20 is fixed to the upper end of the shaft 19 of the rear pulley 17, and the worm wheel 20 meshes with a worm gear 22 fixed to a transmission shaft 21 whose both ends are supported by the posts 7 and 8. These pair of worm gears 22 have a reverse thread relationship, and are configured so that when the transmission shaft 21 rotates, each worm wheel 20 rotates at the same speed and in opposite directions. In addition, this transmission shaft 21
are driven by a reversible motor 24 via a transmission belt 23, and together constitute a drive mechanism for moving the insertion plate 2 forward and backward.

As can be seen from a comparison with FIGS. 2 and 3, the insertion plate drive device shown in FIG. 3 is not shown in FIG. 2, whereas in FIG. The illustration of the belt and the like shown in FIG. 2 is omitted.

The bed transfer device as described above is used as follows. First, as shown in FIG. 4a, the bed transfer device 25 on which a horizontal board is placed or fixed on a moving cart (not shown) or the like is brought close to the side of the bed 31 on which the patient 30 is sleeping. Set.

At this point, for example, most of the surplus of the upper belt 11 has been wound around the lower roller 10, and the upper roller 9 is locked so as not to rotate.

While maintaining this state, the motor 24 is operated to feed the insertion plate 2, and the insertion plate 2 is inserted between the bed 31 and the patient 30 as shown in FIG. 4b.
At this time, the motor 15 is operated and the lower roller 10
is rotated in the belt feeding direction, and as the insertion plate 2 moves forward, the upper belt 11 moves in the direction of the arrow in FIG. When the insertion plate 2 is inserted, the upper belt 1
1 is sent out from the lower roller 10. At the same time, the lower belt 12 circulates around the lower plate 4 as shown by arrow B.

When the insertion plate 2 enters between the patient and the bed, the relative positions of the upper belt 11 on the upper plate 3 and the lower belt 12 under the lower plate 4 do not change with respect to the patient 30 and the bed 31, respectively. Therefore, no sliding occurs between them. Therefore, the insertion plate 2 smoothly enters between the bed 31 and the patient 30.

FIG. 4c shows the insertion plate after it has been inserted under the patient. Upper belt 11
is almost withdrawn, and the patient 30 is completely on the insertion plate 2.

Next, the upper roller 9 is unlocked, and both motors 14 and 15 are driven to rotate in the winding direction, and the upper and lower rollers 9 and 10 are moved in the direction indicated by the arrows in FIG. 4c.
The upper belt 11 is rotated in the direction D to wind up both ends of the upper belt 11, and at the same time, the motor 24 is driven in the insertion plate retracting direction to retract the insertion plate 2.

As a result, as shown in FIG. 4d, the patient 30
is transferred onto the substrate 1 of the device 25. In this state, the upper belt 11 sent out from the lower roller when inserting the insertion plate under the patient is wound in half by the upper and lower rollers 9 and 10.

Note that the patient 30 on the bed transfer device 25 is transferred to the bed 31.
If you want to return it to the top, just do the exact opposite of the above.

In this way, the patient on the bed can be picked up onto the transport means without placing any burden on the caregiver.

A bed transfer device as described above is provided with guiding means according to the invention. The guiding means includes a member 42 having a channel-shaped cross section, as shown in FIG.
are arranged on the base plate 1 of the bed transfer device, and the side surfaces of the members 42 are configured to abut on both sides of the lower plate 4 of the insertion plate 2. In this embodiment, the channel-type guide member 42 also serves as a cover for covering the pulley and the endless belt 18 that are the drive mechanism of the insertion plate 2, and furthermore, the channel-type guide member 42
By supporting both sides of the upper plate 3 at the upper end, the insertion plate 2 is supported more stably. Also in this embodiment, the side surface of the U-shaped guide member 42 that contacts the lower plate 4 and the upper end that contacts the upper plate 3 are coated to reduce frictional resistance.

In the bed transfer device having the above-described configuration, the direction of the insertion plate 2 is always defined from both sides, so that the direction of the insertion plate 2 does not always change regardless of any load applied to the insertion plate 2. Bed transfer operations can always be carried out reliably.

In addition, the sliding means between the guide means and the insertion plate 2 is as follows.
In this example, this was achieved by coating with tetrafluoroethylene, but it is also possible to use other low-friction members or mechanical sliding means such as linear bearings.

Furthermore, the configurations of the belts 11 and 12 and the rollers 9 and 10 provided on the insertion plate 2 are not limited to these; for example, the configurations of the belts 11 and 12 and the rollers 9 and 10
are used to wind up or send out both ends of the belt, and do not need to be placed above or below; therefore,
The rollers 9 and 10 may be arranged horizontally side by side. Furthermore, the configurations of the belts 11 and 12 may also take other forms.

Furthermore, the form and mounting position of the guide means are
It can take many forms. That is, for example, a groove cut in the side surface of the lower plate 4 and a plate-shaped guide member that fits into the groove can also be used. In this case, it is possible to prevent not only movement of the insertion plate 2 in the horizontal plane but also movement in the vertical direction.

Effects of the Invention As detailed above, the bed transfer device according to the present invention has the function of transferring a patient on a bed onto a transfer means without placing any burden on the patient or the caregiver, by adding a simple member. It has a configuration that allows it to be implemented more reliably.

Further, since the insertion plate driving device is covered with the guide means, the safety of the device can be further improved without complicating or increasing the size of the device.

[Brief explanation of the drawing]

1A and 1B are a front view and a perspective view showing one embodiment of the present invention, and FIG. 2 is a schematic perspective view showing the configuration of an example of a bed transfer device to which the present invention can be applied. FIG. 3 is a partially omitted perspective view showing an example of the driving means for the insertion plate of the bed transfer device in FIG. 2, and FIGS. FIG. 5 shows an outline of the drive means of the bed transfer device and an example of unexpected movement of the insertion plate. Main reference numbers: 1...Horizontal board, 2...Insert plate, 3
...Top plate of insertion board, 4...Bottom plate of insertion board, 7, 8...Vertical post of horizontal board, 9, 10...
Roller, 11... Upper belt, 12... Lower belt, 24
...insertion plate drive motor, 25...bed transfer device, 30...
Patient, 31... bed, 41, 42... guide member.

Claims (1)

[Scope of Claims] 1. A device comprising a horizontal substrate, an insertion plate that moves horizontally forward and backward on the horizontal substrate, and an insertion plate drive device, and the insertion plate consists of an upper plate and a lower plate that are stacked and integrated at a distance from each other. The insertion plate drive device consists of a pair of pulleys (front and rear) set upright on a horizontal board on both sides of the insertion plate, an endless belt hung between the pair of pulleys, and a part of the belt fixed to the insertion plate. In the bed transfer apparatus having such a structure, the upper plate is extended on both sides of the lower plate, and a guide means having a channel-shaped cross section is fixedly installed on the horizontal substrate below the overhang, and the guide means The insertion plate driving device is housed between both vertical walls of the guide means, and the outer surface of one of the vertical walls of the guide means is slidably abutted against the side surface of the lower plate to define the advancing and retreating direction of the insertion plate. Bed transfer device. 2. The bed transfer device according to claim 1, wherein the guide means is provided with a coating layer having good lubricity on the sliding surface with the lower plate. 3 The lower belt, which is partially fixed to the front of the horizontal board, is wound around the lower plate of the insertion plate in a closed loop, and the upper belt delivery and winding devices located behind the insertion plate are attached to the upper and lower surfaces of the upper plate. Claim 1 or 2, characterized in that an upper belt whose one end and the other end are separately wound around the first and second rollers is turned and attached to the front edge of the upper plate. Bed transfer device as described.