JPS6361246B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for transferring objects using a support base surrounded by an endless belt, and particularly for transferring a patient in a hospital or the like from one room to another through a window. The present invention relates to a transfer device that can be suitably used in various cases.

Such a transfer device is used as a device for transporting patients into and out of a sterilized operating room or the like from an external room. In other words, when transporting patients into and out of a sterilized operating room, if you use a transport vehicle through the door, bacteria will enter the operating room and it will be necessary to sterilize it again, so patients should be moved in and out quickly. The method used is to install a loading/unloading device in the window of the operating room and to carry the patient in/out through the window.

This transfer device has a support table for scooping up, mounting, and transferring a patient lying on an operating table, etc., and this support table is a flat frame that is supported so as to be horizontally movable in a horizontal state. The basic components are an endless belt that surrounds the frame in the patient transport direction, and the patient is transported by rotation of the endless belt and movement of the frame.

An example of such a device is shown in Japanese Patent Application Laid-open No. 53-16487, ``Transportation device for moving a lying patient, especially in a hospital.'' This "carrying device" basically consists of two upper and lower frames and endless belts surrounding both frames, and the lower endless belt is actively rotated by a drive mechanism. This "carrying device" is a system in which the lower endless belt of both the upper and lower endless belts is actively rotated, and the upper endless belt is driven by frictional force, so the upper endless belt on which the patient is carried is rotated. There is a problem with the reliability of belt rotation. Furthermore, there is a problem in the speed of patient transfer, and the upper endless belt has the disadvantage that it is difficult to rotate smoothly.

This type of patient transfer device does not adopt the method of using two endless belts, upper and lower, as described above, but one
A simple structure consisting of just one endless belt (Special Publication No. 57-3373 ``Object Transfer Device'') has also been proposed, but this ``transfer device'' has an endless belt friction-bonded to a bed etc. by the movement of the frame. There are problems with reliability when picking up and transporting patients.

The present invention aims to provide an object transfer device that eliminates the drawbacks of the conventional devices as described above.

The object transfer device of the present invention is characterized in that the support base includes two endless belts, upper and lower, and the upper endless belt, on which the object (patient) is directly placed, is directly rotated by a drive mechanism. The point is that we adopted a method in which the system is moved.

Hereinafter, an illustrated embodiment in which the present invention is implemented as a patient transport device will be described.

FIG. 1 is an overall configuration diagram of the transfer device of the present invention implemented in a window M of a partition wall W. A support stand S, which forms the main body of the device, is inserted through the window M, and an operating room A and an outside room B are shown. It shows a state where it is extended. Although the figure shows a state in which the window M is opened, specifically, an opening/closing window that descends to the top surface of the support base S is provided, and this opening/closing window (not shown) is shown in FIG. ) has been omitted. In the figure, a patient K is placed on an operating table D in an operating room A, and the state before the patient K is transferred to, for example, a transport vehicle H in an external room B is shown.

The details of the structure of the support stand S will be described later, but its main components are a frame 1 on which the patient K is mounted and supported.
and a lower frame body 2 and endless belts 3 and 4 surrounding these in the direction of transport of the patient. This support stand S is supported in a horizontal state through the window part M, and can be moved back and forth in the horizontal direction.

In order to transport the patient K, the support stand S is constructed so that an endless belt 3, which is especially arranged around the frame 1, can be actively rotated, and is also constructed so that it can be moved a certain amount in the vertical direction. There is.
Details of these configurations will be explained with reference to FIGS. 2 to 7.

FIG. 2 shows a state in which the support stand S is installed in a horizontal state with respect to a movable pedestal 5 installed in a window M so as to be movable up and down by two hydraulic cylinders 15 (see FIG. 3). In addition, 16 is the hydraulic cylinder 1
5 is a ram that moves up and down. The patient is transferred from the right to the left or from the left to the right using this device, but is placed on the support table S in a recumbent state. For this purpose, the width of this support table (the length in the direction perpendicular to the plane of the paper in FIG. )are doing. This state is clearly seen in FIG. 3 when FIG. 2 is viewed from -', and the supporting base 5 is held at both sides by the horizontally long U-shaped pedestal 5.

The overall height (thickness) of the support stand S is made as small as possible to reduce weight, but as will be described later, a certain height is required in order to hold the drive source for the endless belt 3 inside. It has a certain quality. Of course, it is also possible to take out this driving source to the outside, and in that case, the thickness can be reduced. On the other hand, since it is required to be strong enough to withstand the loading of a patient, the structure must meet this requirement.

The support stand S has a flat trapezoidal shape as shown in FIGS. 1 to 3, and has an upper frame 1 and a lower frame 2.
and endless belts 3 and 4 surrounding these are the main constituent elements. Frame 1 is the 4th
As shown in FIGS. 6 to 6, it is made up of a joined body of a flat trapezoidal frame 1F and side plates 1S on both sides in the width direction, and rollers 1R are attached to both ends in the transport direction as shown in FIG. The roller 1R has the same length as the width of the support stand S, and both ends are connected to the side plate 1S of the frame 1.
The support shaft 2 attached to the retaining plate 28 fixed to
9 is rotatably supported.

An endless belt 3 surrounds the outer peripheral surface of the frame 1. A hole is provided at the center of the frame body 1F at the lower part of the frame 1, and the endless belt 3 is inserted into this hole at the lower position. is inserted inside. The configuration is shown in FIG. 6, and this is for actively rotating the endless belt 3.

That is, as shown in FIG. 6, a rotary drive roller 6 is rotatably held inside the center of the frame 1 with the same length as the width of the support base S like the roller 1R, and the endless belt 3 is It circulates above and surrounding the drive roller 6. 7,8
is a roller that increases the contact length of the endless belt 3 with the drive roller 6 to reliably transmit rotational force to the belt 3. Although not shown, it is urged toward a position below the drive roller 6. ing. The drive roller 6 is rotationally driven by a drive machine 9 via a chain 14, the configuration of which is shown in FIG.

FIG. 7 is a cross-sectional view taken along the line -' in FIG. 6, showing only the belt drive section. Note that, as is clear from FIGS. 3 and 7, the endless belt 3 is divided into two parts with the center portion of the support base in the width direction as the border. This is because the belt drive section is installed inside the frame 1, as will be explained next.

As shown in FIG. 7, the frame body 1F of the frame has a joint part 1M that joins the upper and lower parts at this central part, and a space part 1H in which a transmission system is installed in the central position.
has. In FIG. 7, the left side of the center of the space 1H is shown as a sectional view passing through the central axis of the rotary drive roller 6, and the left and right sides are shown as sectional views passing through the central axis of the electric motor 9. There is.

As is clear from the figure, the rotary drive roller 6 is also divided into two parts in the width direction of the support base like the endless belt 3, and its support shaft 6' is connected to the joint part 1 through the bearing TS'.
A chain sprocket 13 is rotatably supported by M and is fixed at the center of the support shaft 6' of both rollers 6.

On the other hand, the output of the electric motor 9 is reduced in speed via a speed reducer 10 and transmitted to a chain sprocket 12 via an output shaft 11. TS connects output shaft 11 to joint 1
This is a bearing that is rotatably supported on M. The electric motor 9 and the speed reducer 10 are integrally fixed to one side of the joint 1M. Although not shown in the drawing, as shown in FIG. 6, both chain sprockets 12,
A chain 14 is extended between the rollers 13 and 13 so that the output of the electric motor 9 is transmitted to the rotary drive roller 6. In this way, the endless belt 3 is actively driven by the electric motor 9 and rotates around the frame 1. This is the frame 1F of the frame when the patient K is placed on the support stand S.
The rotational drive roller 6 generates a rotational force that is large enough to overcome the frictional force between the belt 3 and the endless belt 3.
is set to be transmitted to Endless Belt 3.

A frame body 2 is held below the frame 1, and this frame body 2 is held by fixing screws DP via holding plates 28 on both sides. The rollers 2R are attached to the support shafts 2 at both ends of the frame 2.
It is rotatably held by the holding plate 25 via 9'. Along with the aforementioned roller 1R, this roller 2R
Although not shown, it is smoothly and durablely held on the holding plate via a bearing. An endless belt 4 is disposed around the frame 2, and the distance between the rollers 1R and 2R is set so that the upper side of the endless belt 4 contacts the lower side of the endless belt 3.

A support stand S whose main components are the frame 1, frame body 2, and endless belts 3 and 4 as described above.
is installed in a horizontal state with respect to the pedestal 5 so as to be movable in the horizontal direction. Its configuration will be explained with reference to FIGS. 2 to 5. The main body of the support stand S is a frame 1, and in the illustrated embodiment, this frame 1 is installed on a pedestal 5. That is, as shown in FIGS. 5 and 4, a groove 1G extending in the horizontal direction is formed in the side plate 1S of the frame 1, and a support roller 17 held on a frame 5 is inserted into this groove 1G. , is installed in an engaging relationship with the support roller 17 and the side plate 1S. The side plate 1S is firmly fixed to the frame body 1F of the frame 1, and by supporting the side plate 1S via the support rollers 17, the frame 1 is supported on the pedestal 5, and therefore the support base S is constructed. Become.

The support roller 17 is connected to a support shaft 18 that extends through the frame 5.
It is rotatably held by a roller bearing (not shown) or the like. In addition, the support shaft 18 is a support stand S.
The material and size are set so as to have sufficient mechanical strength to support the patient K. Reference numeral 19 denotes a fixing holder that fixes and holds the support shaft 18 on the pedestal 5. The diameter of the support roller 17 is set to be slightly smaller than the width of the groove 1G, so that the support stand S can be moved horizontally smoothly.

Although the support stand S is movable in the horizontal direction as described above, it does not move freely at all, but its movement is controlled by a locking mechanism for the fixed part in order to smoothly transfer the patient K. It is becoming more and more common.

That is, first, grooves 2G and 2G' having narrow widths (width in the vertical direction) are formed in the upper and lower sides of the lower frame body 2, although not shown in FIG. The length of the grooves 2G, 2G' in the width direction of the support base S, that is, the depth thereof, is set to be large enough for the locking mechanism shown in FIG. 8 to function, as will be described later.

The moving system of the transfer device according to the present invention is characterized by locking the rotation of the lower endless belt 4 (second endless belt if the upper endless belt 3 is the first endless belt) with respect to a fixed part. The first endless belt 3
As a result of being actively rotated, the entire support base S is displaced and moved in the horizontal direction. In Fig. 2, KD is the locking mechanism.

For this purpose, grooves 2G and 2G' are provided in the lower frame 2 as described above, and the construction and operation thereof will be explained in detail with reference to FIG.

FIG. 8 is a view seen from -' in FIG. 2, showing the endless belt 4 surrounded by the frame 2 and the mechanism KD that locks the endless belt 4 to the fixed part (the pedestal 5 in the illustrated example). The configuration is shown in cross section.

In the figure, 20 is a hydraulic or pneumatic cylinder fixed to the frame 5, and has a triple piston mechanism installed therein. That is, 21 is a lower-stage piston and is integrally attached to a piston rod 22 that passes upward through the cylinder 20, and 24 is a middle-stage piston, and a sleeve-shaped rod 24' fitted into the piston rod 22 is integrally attached to the piston. Further, numeral 26 indicates an upper piston, and a sleeve-like rod 26' that is fitted into the rod 24' is integrally provided.

A locking plate 23, 25, 27 for locking the belt is integrally attached to the upper end of each rod 22, 24', 26', respectively. The locking plate 23 has one end inserted into the upper groove 2G of the frame 2,
One end of the locking plate 25 is inserted into the groove 2G'. The locking plate 27 is disposed close to the lower surface of the endless belt 4 on the lower side.

Therefore, the inlet port of the hydraulic cylinder 20
When pressure oil is introduced into H ₂ and the other ports H ₁ and H ₃ are connected to drains, the endless belt 4 is not locked to the fixed part at all in the illustrated position.
However, when pressure oil is introduced into port _H1 and port _H2 is connected to the drain, the locking plate 27 remains fixed as it is, but the locking plate 25 is urged downward, and therefore the locking plate 25 is forced downward. The lower side of the endless belt 4 is clamped and locked between the locking plates 25 and 27. That is, the locking plate 27 becomes a fixed support base, and the locking plate 25 is pressed from above.

On the other hand, pressure oil is led to port H ₃ and connected to ports H ₁ and H ₂
When connected to the drain, the locking plate 23 urges the lower surface of the upper side of the endless belt 4 upward and locks the upper side to the fixed part.

The configuration of this locking mechanism is not limited to the illustrated example, and various modified embodiments are possible, such as a clamping system that uses a cam instead of a cylinder system, or a clamping system that uses electromagnetic force.

An electric motor 9 for actively rotating the support stand S, especially the endless belt 3, and the support stand S.
The operation of the locking mechanism, that is, the operation of the hydraulic cylinder 20 for horizontally moving the frame 5, and the operation of both hydraulic cylinders 15 for moving the pedestal 5 up and down are performed sequentially when transferring the patient K. This is done by operating the operation button P and switch T on the operation box 30, as shown in FIG. That is, the signal from the operation box 30 is input to the controller 31, and as described later, the signal is input to the electric motor 9 and the hydraulic cylinders 15, 20, 20'.
Outputs the signals necessary to operate. 32 is a power source, and 33 is a hydraulic power source.

34 is a switching circuit that controls the operation of the electric motor 9 based on a signal from the controller 31. electric motor 9
is a reversible electric motor, and the controller 31 inputs a signal for either forward rotation or reverse rotation to the switching circuit 34 based on the signal from the operation box 30, so that the direction of rotation of the electric motor 9 is controlled.

On the other hand, from the controller 31, each hydraulic cylinder 15,
20, 20' operation control signals are sent to the respective electro-hydraulic servo valves 35, 35', 36, and the hydraulic power source 3
Pressure oil from No. 3 is supplied to each cylinder based on the signal.

When each cylinder is an air cylinder, the hydraulic pressure source becomes an air pressure source, and in the case of a mechanism other than the cylinder, such as a cam mechanism, an electric motor, an electromagnet, etc. serve as the driving source. In this case, a switching circuit is required in place of the voltage servo valve.

The reason why two hydraulic cylinders 20, 20' are provided is to lock the endless belt 4 on both sides, and this configuration is shown in FIG. Furthermore, an embodiment in which the locking plates 23, 25, and 27 of the locking mechanism are operated by one cylinder is shown, but the locking plate (first locking mechanism) that locks the upper side of the belt is It is also possible to operate the locking plates 25 and 27 (second locking mechanism) that lock the lower side by separate mechanisms. However, as is clear from the drawings, these locking mechanisms must be installed on a fixed part (in the illustrated example, the pedestal 5 fixed in the transfer direction). This makes it possible to securely lock the endless belt and to simplify the structure of the device.

Although the control system diagram shown in FIG. 9 schematically shows the basic configuration, various devices are specifically added.

Although the on/off control method is illustrated in which the operation button P is held down and the button P is stopped from moving the support stand S or transferring the patient K, the on/off control method is not limited to the illustrated example. It is also possible to set the amount of movement in advance, or to input this value when the patient transfer distance is known, and to control the movement of the endless belt or support base in accordance with this input value. Digital values may be input, and furthermore, a microcomputer may be installed to control the amount of movement and the amount of rotation of the endless belt to match the set values. It is also conceivable to add various functions and devices to such a specific device.

In the above configuration, the operation of transporting the patient K will be explained with reference to FIG. FIGS. 10-17 show the sequence of transfer and also the sequence of operation of the device. In addition, in FIG. 10, the relationship between the support stand S and the patient K is schematically shown. In particular, regarding the support stand S, the endless belts 3, 4 and the driving roller 6 of the endless belt 3, which are directly involved in transporting the patient, are shown as representatives. Also, in Fig. 10, the endless belt 3,
4 has black circles or triangular arrows placed at regular intervals on the line of the belt, but belts with black circles are not displaced relative to the partition wall W, that is, they are in a stationary state. show that there is
The triangular arrow indicates displacement relative to the partition wall W, that is, movement in the direction of the arrow.

In the illustrated example, an operation will be described in which a patient K on an operating table D is transferred through a partition wall W to a transport vehicle H in an outer room. It is assumed that the vertical movement and horizontal movement of the drive roller 6 and the support base S are performed by the operations described above.

FIG. 10 shows a state in which the support stand S is located on the outside chamber B side. It is necessary to move the support stand S to the right from the illustrated position, but at the same time when the drive roller 6 starts rotating, the lower side of the endless belt 4 is moved by the second locking mechanism, that is, the locking plates 25 and 27. Lock it against the setting part. Then, the upper side of the endless belt 3 and the lower side of the endless belt 4 are fixed relative to the fixed part, that is, in a stationary state, and as the driving roller 6 rotates, the joining side of both the endless belts 3 and 4 is rotated to the left. As a result, the support stand S is moved to the right as shown in FIG.

When the tip of the support stand S approaches the operating table D, the height of the pedestal 5 is adjusted so that the lower side of the endless belt 4 is on the upper surface of the operating table D (patient K).
(back side) position to match. FIG. 2 shows this state, and in the illustrated example, it is displaced downward. When the drive roller 6 is actively rotated in the direction of the arrow from this state, the support stand S further advances to the right.

In this case, the tip of the support table S is flat, and the upper surface of the endless belt 3 is stationary with respect to the back of the patient K, and at the same time, the lower part of the endless belt 4 is also stationary with respect to the upper surface of the operating table D. . Therefore, the tip of the support table S enters between the patient K and the operating table D without any resistance. Then, the patient K is scooped up and placed on the upper surface of the support table S. FIG. 3 shows the situation.

When the patient K is loaded, the support stand S is moved to the left in order to transfer the patient K to the left. To do this, the endless belt 4 is moved by the locking plates 25 and 27 of the second locking mechanism. The locking state on the lower side is released and the upper side of the endless belt 4 is locked by the locking plate 23 of the first locking mechanism. At the same time, when the drive roller 6 is driven to rotate in the same direction of the arrow, the joint sides of both the endless belts 3 and 4 are fixed relative to the fixing part, that is, become stationary, and the support base S is moved as shown in FIG. The patient K is placed on the vehicle and at the same time the patient K is moved to the left relative to the support table S. However, in this case, the pedestal 5 is slightly displaced upward.

FIG. 5 shows a state in which the support stand S has moved to the left and the patient K has been transferred above the transport vehicle H, and in this position the belt 4 is released.

Next, the pedestal 5 is moved downward and the support stand S is placed on the upper surface of the carrier H as shown in FIG. In this state, the locking plates 25, 2 of the second locking mechanism are again
7 locks the lower side of the endless belt 4. At the same time, the drive roller 6 is rotated in the direction of the arrow. Then, only the joining side of both endless belts 3 and 4 rotates to the right as shown, and the support stand S is moved to the right. Although the support stand S is transferred to the right, the patient K is not transferred to the right because the upper side of the upper endless belt 3 is in a stationary state with respect to the fixed part. Therefore, when the support table S moves to the right, the patient K is lowered from the support table S at a fixed position. FIG. 7 shows a state in which the support table S has moved to the right, the patient K has been lowered onto the transport vehicle H, and the transfer has been completed.

The present invention is not limited to the illustrated example,
Various variant embodiments are possible. First, the frame, which is the main component of the support base, is formed by joining plate-shaped bodies in the illustrated example, but other than that, for example, a large number of rollers and rollers of different diameters may be installed between both side plates. It can also be constructed by arranging it, and it is sufficient to surround the entire periphery with an endless belt. In this case, one of them may be configured as a driving roller for the belt.

As for the installation position of the electric motor that drives the upper endless belt, as mentioned above, it may be on the side in the width direction of the entire support base, and in that case, the support base can be formed without dividing the endless belt into two parts. .

As for the lower frame body 2, since it is sufficient to have an endless rotating belt surrounding the frame body 2, an intermediate frame may be unnecessary with only the rollers 2R on both sides.

Furthermore, regarding the configuration for holding these support stands, the construction method, the shape of the stand, and the up-and-down mechanism and horizontal movement mechanism of the stand are not limited to the illustrated embodiments, and various modifications may be made.

First, the shape of the pedestal for horizontally holding and erecting the support pedestal is not limited to the illustrated example, and its vertical displacement mechanism may be not only a hydraulic system but also a cam mechanism or a screw feeding mechanism.

A mechanism for vertically displacing the support base is not necessarily required.

Furthermore, such a transfer device may be equipped with a device for measuring and displaying the weight of the object to be transferred.

The device of the present invention is capable of transporting not only patients but also various objects. For example, it can be suitably used as a device for transferring heavy objects such as steel temples. In this case, various types of endless strips may be used to surround the support base. The locking mechanism for the endless band-like body can also be modified in various ways as described above, and is not limited to the illustrated example.

The object transfer device according to the present invention allows objects to be transferred more reliably than conventional devices.
In particular, since the endless band-like body itself, which is surrounded by the frame on which the object is mounted, is actively driven and rotated, the mounted object can be reliably transported. Since both locking mechanisms for both endless belts are also installed in the fixed part, there is an advantage that the structure of the entire apparatus is simplified, and the endless belts can be securely locked and the transfer operation can be carried out appropriately.

Furthermore, the entire support base does not slide into contact with other fixed parts, and in particular, when the surrounding endless band-shaped body comes into contact with the fixed part, it eliminates the state of relative displacement and forms a stationary state, Furthermore, objects can be transferred and accidents such as damage to endless strips do not occur. It can be effectively used as a patient transport device in hospitals, and its effects are remarkable. In particular, the movement of the support base can be easily stopped by simply turning on and off the locking with respect to the lower endless band, and the structure can be simplified.

[Brief explanation of drawings]

Fig. 1 is a diagram schematically showing the whole when an embodiment of the present invention is installed in a hospital window; Fig. 2;
Figures 3 and 4 are diagrams showing the configuration of the support stand and its support construction method, Figure 5 is a diagram showing the configuration of a part of the support stand, and Figure 6 is a diagram schematically showing the endless strip drive mechanism. 7 is a diagram showing an example of its specific configuration, FIG. 8 is a vertical sectional view showing an example of the locking mechanism of the endless strip, and FIG. 9 is a schematic diagram showing the operation control system of the support base. 1 to 7 are diagrams for explaining the order of transferring objects and the operation of the apparatus. 1...Frame, 1F...Frame body, 1S
... Frame side plate, 1M ... Groove, 2 ... Lower frame body, 2G, 2G' ... Groove, 3, 4 ... Endless belt, 5 ... Frame, 6 ... Drive roller, 9 ...
Electric motor, 10, 23... Reducer, 12, 13...
Chain sprocket, 14...Chain, 15
... Hydraulic cylinder, 16 ... Ram, 17 ... Support roller, 18 ... Support shaft, 20, 20' ... Hydraulic cylinder, 23, 25, 27 ... Locking plate, 30 ...
Operation box.

Claims (1)

[Claims] 1. A frame on which an object to be transferred is mounted and surrounded in the transfer direction by a first endless band-shaped body and supported so as to be movable in the horizontal direction with respect to a fixed part, and a lower side of the first endless band-shaped body. a support base consisting of at least two rollers disposed on both sides for rotatably surrounding a second endless strip whose upper side is friction-bonded over the entire area; and a support base that rotates the first endless strip in the surrounding direction. a first locking mechanism provided on the fixing section for locking the upper side of the second endless strip to the fixing section;
a second locking mechanism provided on the fixing part for locking the lower side of the endless strip to the fixing part; By adjusting the horizontal movement of the support base by operating the first and second locking mechanisms, an object located on one side of the support base movement direction is scooped up onto the support base, and is lowered to a position on the other side. An object transfer device characterized by being able to transfer an object.