JPH0647409B2 - Object transfer device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to an apparatus for transferring an object using a support stand surrounded by an endless belt, and particularly for a patient in a hospital or the like, one room through a window. The present invention relates to a transfer device that can be suitably used when transferring from one chamber to another chamber.

(B) Prior Art This type of transfer device is used as a device for carrying a patient in and out of a sterilized operating room or the like from an external room. That is, when carrying in or out a patient in a sterilized operating room by a carrier vehicle or the like through the door, it is necessary to sterilize the bacteria again into the operating room,
As a method for quickly loading and unloading a patient, a method of installing a loading / unloading device in a window of an operating room and loading / unloading the patient through this window is adopted.

This transfer device has a support base for picking up, loading, and transferring a patient lying on an operating table or the like. The support base has a flat shape and is supported so as to be horizontally movable in a horizontal state. A frame and an endless belt which is arranged around the circumference of the frame in the patient transfer direction are basic components, and the patient is transferred by the rotation of the endless belt and the movement of the frame.

An example of such a device is shown in JP-A-53-16487, "Carrying device for moving a sleeping patient, especially in a hospital". This "carrying device" is basically composed of two upper and lower frames and respective endless belts that are provided around the two frames, and the lower endless belt is positively rotated by a drive mechanism. . This "carrying device" is a system in which the lower endless belt of both upper and lower endless belts is positively rotated and the upper endless belt is driven by friction force. There is a problem with the certainty of movement. In addition, there is a problem in that the patient can be transferred quickly, and it is difficult to smoothly rotate the upper endless belt.

This type of patient transfer device has a simple structure with only one endless belt instead of the above-mentioned method of using two upper and lower endless belts (Japanese Patent Publication No. 57-3373).
No. "Object transfer device") has also been proposed, but this "transfer device" is a system in which the endless belt is frictionally joined to the bed etc. by the movement of the frame and rotated, and its reliability in picking up and transferring the patient. I have a problem.

(C) Objective The present invention is an object transfer device that solves the above-mentioned drawbacks of the conventional device, in which a frame on which an object such as a patient is mounted is surrounded by a group of endless strips in a special form. It is intended to provide an ideal transfer device that adopts the above-mentioned method and is equipped with a mechanism for horizontally moving and vertically moving the support base that holds the endless strip-shaped body group, and that can transfer the object surely and quickly. It is a thing.

(D) Configuration The feature of the object transfer device of the present invention is the configuration of the support base that transfers the object by placing it on the upper surface. That is, the support base is a frame that mainly supports an object to be mounted, both end rollers arranged at both ends of the frame in the transfer direction, and an eight-character winding between the frame and both end rollers. It is composed of a group of endless strips obtained by winding a large number of wound small width endless strips. A drive mechanism for rotating the endless belt and a movable mechanism for vertically moving the support base are provided, and a guide mechanism for horizontally guiding the support base is provided.

The objects are picked up from one side of the support table by the cooperative operation of these respective mechanisms, and are received and transferred to the other side. Although there are many endless strips, unlike the conventional method in which separate strips are provided on the upper side and the lower side, the upper and lower strips are formed by winding one strip around the frame in a figure eight shape. Is characterized by.

(E) Example An example of a patient transfer device will be described below.

FIG. 1 is a view showing an overall configuration in which the transfer device of the present invention is applied to a window portion M of a partition wall W. A support base S, which is the main body of the apparatus, is provided through the window portion M, and an external chamber A and an operation are performed. The state where it extends to the chamber B is shown.

Although the figure shows a state in which the window M is opened, specifically, an opening / closing window that descends to the upper surface of the support base S is provided, and FIG. 1 shows this opening / closing window (not shown). (No.) is omitted. In addition, in the figure, patient K is outside room A
The patient K is placed on the carrier H of the operating room B.
The state before transfer to the operating table D in FIG.

Although the details of the structure of the support base S will be described later, the main components thereof are a frame 1 on which a patient K is mounted and supported, both end rollers 2 and an endless belt 3 (a small width which surrounds these rollers 2 in the patient transfer direction). Endless strips).
The support base S is supported by being penetratingly supported by the window M in a horizontal state, and is capable of reciprocating in the horizontal direction.

In order to transfer the patient K, the support S is configured such that the endless belt 3 which is disposed around the frame 1 is positively rotated, and is also configured to be able to move a little in the vertical direction. ing. Details of these configurations will be described with reference to FIGS.

FIG. 2 is a perspective view showing the installation state of the patient transfer device shown in FIG. 1, in which the support S is installed in the window M so that the support S is mainly visible, and the endless belt drive mechanism and the support S are vertically moved. The movable mechanism for is located inside the partition wall W and will not appear to the outside, as will be described later.

The support base S is supported by a movable box R installed via a support frame 4 so as to be movable up and down with respect to the partition wall W, and is also supported so as to be movable in the horizontal direction at the same time. Reference numeral 4H is a horizontal guide hole formed in the support frame 4 for that purpose, and the support roller 6 of the movable box R is fitted therein as described later.

In the figure, the narrow endless belt 3 is shown as an example in which about 10 windings are provided at regular intervals for easy understanding, but in practice, the gap is eliminated so that the upper surface of the frame 1 is almost covered. Is desirable. Further, since the endless belt has a small width, the frame 1 and the guide rollers 1R attached to both ends of the frame in the transfer direction and the both end rollers 2 are formed with concave grooves equal to the width of the endless belt 3 to form the endless belt 3. It is desirable not to fluctuate laterally (horizontal shake).

Each of the endless belts 3 is wound around a guide roller 1R and both end rollers 2 and is in contact with each other, but they are the same endless belt, that is, one endless belt 3 is a frame 1 and both end rollers 2, 8 to 2
It is wound in a letter shape. This point is a feature of the present invention.

The support mechanism and the movable mechanism of the support base S are shown in FIGS. 3 to 5. FIG. 3 is a perspective view showing the relationship between the support base S, in particular, the frame 1 and the support frame 4 and the movable box R supporting them. In the drawing, the small width endless belt 3 is all removed and the support frame 4 is also partially broken.

The guide roller 1R and both end rollers 2 are rotatably held in position with respect to the frame 1 via a support frame 4. That is, the frame 1 is fixed to the support frame 4 by fixing bolts 5, and the guide roller 1R and both end rollers 2 have their support shafts 1RS and 2S rotatably held by the support frame 4 via bearings.

As described above, the guide holes 4H are provided in the support frames 4 arranged on both sides of the support base S, and the support rollers 6 which are rotatably held by the movable box R are fitted into the guide holes 4H.
Reference numeral 7 denotes a pinion which is installed on the lower surface of the guide hole 4H and meshes with the rack 4G, which is rotationally driven by the electric motor 14 as shown in FIG. That is, the rotation output of the electric motor 14 is transmitted to the worm 12 via the bevel gear mechanism 13, further decelerated to the worm gear 11 meshing with the worm 12, and transmitted to the timing pulley 10. The rotation of the timing pulley 10 is transmitted to the pinion support shaft 7S via the timing belt 9 and the timing pulley 8 to drive the pinion 7 to rotate. Since the pinion 7 and its supporting shaft 7S are rotated at a position fixed with respect to the movable box R, the rotation causes the support frame 4 to move horizontally due to the relationship between the guide hole 4 and the support roller 6.

The electric motor 14 is a reversible electric motor, and the support frame 4 is displaced to a desired position when rotated while the rotation amount rotation direction is controlled by the control circuit as described later. Electric motor 1
When 4 is not positively driven to rotate, the pinion 7 has a locking function because it is not rotated by the acting force of the support frame 4 due to the interposition of the worm speed reduction mechanism.

The endless belts 3 are wound around the frame 1 and the rollers 2 at both ends in an 8-shape, and the endless belts 3 are rotated with respect to the frame 1 and the rollers 2 at both ends. As shown in the figure, the endless belt 3 is wound around the drive roller 20 under pressure below the frame 1. Reference numeral 21 is a guide roller that guides the endless belt 3 so as to lengthen the portion wound around the drive roller 20.

In FIG. 4, reference numeral 15 denotes an electric motor that rotationally drives the drive roller 20, which transmits the rotational force to the transmission shaft 18 via the transmission mechanism of the gears 16 and 17 which is held by the movable box R. The rotation of the transmission shaft 18 is transmitted to the support shaft 20S of the drive roller 20 via the clutch 19. The movable box R that supports the support S and the mechanism that realizes the horizontal movement are as described above, and the configurations of both the movable boxes R and the drive roller 20 are shown in FIG.

FIG. 5 shows these configurations in a perspective view, and the support base S is virtually shown. Most of the components shown in FIG. 5 are provided inside the partition wall W, as shown in FIG.

FIG. 5 shows a configuration in which the movable box R moves up and down with respect to the fixed portion, and the vertical movement of the movable box R causes the drive roller 20 and the guide roller 21 to move up and down as well. This is because the drive roller 20 and the guide roller 21 are held between the movable boxes R, R. The support base S moves up and down by the up and down movements of the two movable boxes R, R.

The up and down movement of the movable box R is performed by the rotation output of the electric motor 22, and the up and down movement is guided by the guide frame WG which is a part of the partition wall W.

As shown, the movable box R has a through hole R in the vertical direction.
Hs are provided at corresponding positions, and a rack RG is installed on the vertical side surface of this hole. A drive shaft 24, which is rotationally driven by an electric motor 22, penetrates through the through holes RH of both movable boxes R, and a pinion 25 fixed to the drive shaft 24 meshes with the rack RG.

Reference numeral 23 denotes a transmission that decelerates the rotational output of the electric motor 22 and transmits it to the drive shaft 24. The drive shaft 24 is rotatably held by the frame F. Therefore, when the electric motor 22 is controlled as described below and is driven in the desired forward and reverse rotation, the movable boxes R, R move up and down by a desired amount. This vertical movement amount may be small as described later.

The operation of the support stand S, especially the drive 15 for rotating the small endless belt 3 and the drive motor 14 for horizontally moving the support stand S, and the drive motor 22 for moving the movable box R up and down is performed by the patient. The transfer of K is performed sequentially, but these operations are appropriately performed by operating the operation button P and the on / off switch T on the operation box 26 as shown in FIG. That is, the signal from the operation box 26 is input to the controller 27 and outputs a signal necessary for operating the electric motors 14, 15 and 22 as described later. 28 is a power source, S ₁ ,
Switching circuits S ₂ and S ₃ control the operation of the electric motors 14, 15 and 22 by a signal from the controller 27. The electric motors 14, 15 and 22 are reversible electric motors, and the controller 27 sends one of the signals for forward rotation and reverse rotation based on the signal from the operation box 26 to the switching circuits S ₁ , S ₂ ,
The signal is transmitted to S ₃ , and the switching circuits S ₁ , S ₂ and S ₃ also control the rotation directions of the electric motors 14, 15 and 22 based on the signal.

The control system diagram shown in FIG. 7 schematically shows the basic configuration, but specifically, various devices are added.

Although the ON / OFF control system is shown in which the operation button P is kept pressed to stop the push of the button P from the movement of the support S or the transfer state of the patient K, the movement amount of the support S is not limited to the illustrated example. It is also possible to set this value in advance or input this value when the patient transfer distance is known, and to control the movement of the endless belt or the support base according to this input value. You may enter the digital value,
Furthermore, it is possible to install a microcomputer inside and control the movement amount and the rotation amount of the endless belt to match the set value. In such a concrete device, various functions,
It is also possible to add a device.

The transfer of the patient K in the above configuration will be described with reference to FIG. FIGS. 6 (1) to 6 (4) show the order of transfer and, at the same time, the order of operation of this device.

Note that the relationship between the support S and the patient K is schematically shown in FIG. Particularly for the support S, one small width endless belt 3, both end rollers 2, the frame 1, the drive roller 20, and the guide roller 21 which are directly related to the patient transfer are shown as a representative. Further, in FIG. 6, the endless belt 3 is provided with black circles or triangular arrows at regular intervals on the line of the belt, but the belts with black circles are displaced relative to the partition wall W. That is, the triangular arrows indicate that they are not moving, that is, they are in a stationary state, and that they are displaced relative to the partition wall W, that is, that they are moving in the direction of the arrow.

In the illustrated example, the operation of transferring the patient K on the operating table D through the partition wall W to the transport vehicle H in the outer chamber will be described. The vertical movement and horizontal movement of the drive roller 6 and the support base S are performed by the above-mentioned operation.

First, it is necessary to move the support table S toward the operating table D. When the support table is located on the outer chamber side as shown in FIG. 1A, the support table moving mechanism is operated, that is, for driving. The electric motor 14 is rotated to rotationally drive the pinion 7 that meshes with the rack 4G. In this way, the support S is moved in such a manner that when the support S moves, when the upper surface of the endless belt 3 comes into contact with a member or wall of the outer chamber, damage due to contact therewith (damage due to sliding contact) is caused. This is to prevent it.

When the support table S moves to reach the position of the operating table D, and this state is further advanced, the support table S moves forward while the upper surface and the lower surface of the endless belt 3 remain stationary with respect to the fixed portion. Therefore, the left end of the support table S advances between the patient K and the operating table D. As a result, the support base S scoops up the patient K, resulting in the state shown in FIG. FIG. 2B shows a state in which the rotational driving of the driving electric motor 14 is stopped and the scooping of the patient K is completed.

When the scooping of the patient from the operating table D is completed, the patient K is then transferred to the outer chamber side. In this case, first, the driving electric motor 22 is rotationally driven. Then, as shown in FIG. 6 (3), the support base S is slightly raised and the endless belt 3 is separated from the operating table D. When the patient K is next transferred to the carrier H side in this state, the electric motor 15 is rotationally driven. At this time, although the electric motor 14 is stopped, the pinion 7 does not rotate and the horizontal movement of the support base S is prevented. Then, the drive roller 20 is rotationally driven to rotate each of the small width endless belts 3 (in the direction of the arrow), and the patient K is transported to the right on the frame 1. At this time, it is necessary to move the patient K on the belt 3 to the right from this position in consideration of the left end position of the support base S in FIG.

Next, the electric motor 1 is used to transfer the patient K to the transport vehicle H in the outside room.
4 is driven to horizontally move the support base S to the position shown in FIG. Then, the electric motor 15 is driven again to transfer the patient K to the right end on the support S and position it on the transport vehicle H, and then the electric motor 22 is rotationally driven in the opposite direction to move the movable box R downward. (Descent) and return to the same height position as in Fig. (2). FIG. (4) is a diagram showing the state after the restoration.

Next, the operation of lowering the patient K onto the transport vehicle H is performed. For that purpose, the drive motor 14 is rotated in the opposite direction to horizontally move the support base S to the left. Then, the upper surface and the lower surface of the endless belt 3 become relatively stationary with respect to the fixed portion, and the patient K moves on the carrier H by moving the support S to the left while maintaining the position shown in FIG. (4). Will be lowered.

In this way, the transfer of the patient K from the operating table D to the transport vehicle H is completed, but in the case of reverse transfer, the rotation directions of the electric motors 14 and 15 are reversed and driven. In these operations, when the frame 1 enters between the patient K and the operating table D and escapes, the endless belt 3 theoretically does not displace relative to the fixed portion. There is a case in which the relative displacement of the endless belt 3 with respect to the fixed portion may occur due to a malfunction, but the endless belt 3 is a single body with an 8-shaped winding, and a part of the endless belt 3 and the operating table D Since they are fixed by contact, relative displacement is prevented even on the contact side between the endless belt 3 and the patient K.

The present invention is not limited to the illustrated example, and various modified embodiments are possible. First, the frame, which is a main component of the support base, is formed by joining plate-shaped members in the illustrated example of the frame itself, but other than that, for example, a large number of rollers are arranged between both side plates and the entire circumference thereof is arranged. You can also surround the endless belt. It is desirable that the tip of the frame be formed as thin as possible.

Further, in the illustrated example, the driving roller is vertically moved integrally with the vertical movement of the support base. This is because the drive roller is held by the movable box, but the drive roller and the drive roller may be separate bodies, and the drive roller may be held at a fixed position and rotated. In this case, the guide roller 21 in the illustrated example can be displaced left and right, and the slack and tension of the endless belt 3 due to the vertical movement of the support base S can be adjusted by this roller.

Although the horizontal movement of the support base can be performed manually, in this case, it is necessary to additionally provide a mechanism for blocking (locking) the horizontal movement of the support base S when the endless belt is rotated.

The device of the present invention can transfer not only patients but other heavy objects. In this case, it is desirable to use a capillar instead of the belt. Therefore, the present invention is not limited to belts.

(F) Effects As described above, the object transfer device of the present invention can transfer the object more reliably than the conventional device. Particularly, since the endless belt itself, which is surrounded by the frame on which the object is mounted, is actively driven and rotated, the mounted object can be reliably transferred.

Furthermore, the entire support base does not slide in contact with other fixed parts, and especially when the surrounding endless strips contact the fixed part, the relative displacement is eliminated and a stationary state is formed. Objects can be transported and no damage to the endless belt occurs. It can be effectively used as a patient transfer device in a hospital, and its effect is remarkable. In particular, although it is necessary to provide a large number of rows of endless belts, the belts contacting the riding surface and the lower surface are both the same belt, that is, the belt drive (compared to the method of using two upper and lower belts) There is no malfunction of (rotation), and smooth transfer of objects is guaranteed. That is, when the frame 1 enters and leaves between the object and the fixed portion, the endless belt theoretically does not move relative to the fixed portion, but malfunction occurs in the actual concrete operation. Trying to
The endless belt is a single unit that is wound in a figure eight shape between the frame, the guide roller, and the rollers at both ends, and a part of the endless belt is fixed by contact with the fixed portion, and relative displacement is prevented. Further, when the endless belt is driven by the drive roller, the endless belt is surely and quickly rotated due to the simplicity of its configuration. In this way, an object transfer device that smoothly and reliably rotates and transfers an object can be obtained without erroneous operation of the endless strip group.

[Brief description of drawings]

FIG. 1 is a diagram schematically showing the whole of the apparatus according to an embodiment of the present invention when it is installed in a window of a hospital, and FIG. 2 is a perspective view of a support base, FIG. 3, and FIG. 5, FIG. 5 is a view partially showing a vertical movement mechanism and a horizontal movement mechanism of a support base, and a rotation mechanism of an endless belt, and FIG. The figure is a diagram showing a schematic configuration of an operation control system of the support base. 1 ... Frame, 2 ... Rollers on both ends, 3 ... Small width endless belt, 4 ... Support base, 4H ... Guide hole, 4G ... Rack, 6 ... Support roller, 7 ... Rack, 8, 10 ...... Timing pulley, 9 ...... Timing belt, 14, 15, 22 ...... Electric motor, 20 ...... Drive roller, 24 ...... Drive shaft, 27 ...... Controller, 28 ...... Power supply, K ...... Patient, R ... … Movable box, W… Partition wall, M… Window, D… Operating table, H… Transport vehicle.

Claims (1)

[Claims] 1. A frame on which an object to be transferred is mounted via an endless belt surrounded by the transfer direction of the object, and both end rollers and guides arranged at both ends of the frame in the transfer direction. A support base composed of a roller, an endless strip-shaped body composed of a large number of narrow endless strips wound in a figure 8 between the guide roller and both end rollers, and a lower side of the endless strip-shaped body group. An endless belt group drive mechanism for rotating the endless belt group, which comprises a drive roller wound around and a drive source for rotationally driving the drive roller, a frame, guide rollers, and both ends of the support base. A horizontal movement guide mechanism for guiding the horizontal movement of the roller with respect to the fixed portion; A vertical movement mechanism for moving the support base up and down with respect to a fixed part, and a horizontal movement of the support base due to the rotation of the endless strip body group by the endless band body drive mechanism and horizontal movement and vertical movement of the support base. An object transfer device characterized in that an object located on one side of the direction is scooped up on a support and mounted on it, transferred to a position on the other side, and lowered.