JP2006068377A - Patient carrier - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a patient carrier capable of transferring a patient by projecting a transfer bed on the right or left side of the apparatus with a big stroke using a simple configuration. <P>SOLUTION: The patient carrier comprises the transfer bed 10 which is protruded to the right or left of a body 3 using a transfer mechanism and having an upper winding body 5 and right and left lower winding bodies 8 and 9, a first length adjusting section 22 for adjusting the length of an upper belt 4 wound around the upper winding body 5, a second length adjusting section 27 for adjusting the length of lower belts 6 and 7 wound around the lower winding bodies 8 and 9, a driving device for driving the first and the second length adjusting sections, and breaking devices 39, 40 and 41 installed on the first length adjusting section. The patient carrying device is switched among a condition where the upper belt 4 on the top face of the upper winding body 5 is retracted with respect to the transfer bed 10 while the transfer bed 10 is protruded, a condition where the upper belt 4 on the top face of the upper winding body 5 advances with respect to the transfer bed 10 while the transfer bed 10 is retracted, and a condition where the upper belt 4 on the top face of the upper winding body 5 stops moving with respect to the transfer bed 10 while the transfer bed 10 is protruded or retracted. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a patient transport apparatus that can easily transfer a patient from a bed or stretcher to an operating table or from an operating table to a bed or stretcher on either the left or right side in a hospital or the like. It is.

  Usually, the bed in the ward is moved to the operation preparation room, and the patient is transferred from the bed to the operating table. However, if the bed in the ward cannot be moved easily, transfer the patient from the bed to the stretcher in the ward, move the stretcher to the surgical preparation room, and then transfer the patient from the stretcher to the operating table. It is carried out. The above-mentioned patient replacement work is usually performed by lifting the patient with human power (5-6 nurses). Alternatively, a patient transfer device is used as a device for facilitating such work for changing the patient.

  As a conventional patient transfer device, there is one shown in Patent Document 1. This patient transfer device includes an endless belt that is vertically stacked in the left-right direction for transferring a patient, and left and right wound bodies that are movable in the left-right direction around which the upper and lower endless belts are respectively wound, Two horizontally movable rollers arranged at a predetermined interval between the left and right wound bodies of the upper and lower endless belts, and the rollers arranged for each roller together with the upper and lower endless belts. And the right end of the upper and lower endless belts reciprocate between the patient transfer device and the bed when the patient is transferred on the right side of the patient transfer device and on the left side of the patient transfer device. When transferring the patient, the left and right endless upper and lower endless belts reciprocate between the patient transfer device and the bed, etc. Driving device for driving the device Comprising a.

Moreover, as a conventional transfer assistance apparatus, there exists a thing shown in patent document 2. FIG. This transfer assistance device reciprocates the lower transfer plate by rotating the drive belt forward and backward by a drive mechanism to rotate the drive belt, and rotates the lower transfer belt as the lower transfer plate reciprocates. By moving the connecting and fixing part of the lower transfer belt and the middle transfer plate from one end side to the other end side of the lower transfer plate, the middle transfer plate is moved back and forth, and the middle transfer plate is moved back and forth. The upper transfer plate is reciprocated along with the movement of the upper transfer plate, and the upper transfer plate is moved by the rotation of the drive belt, and the lower transfer belt is moved by the lower transfer belt. , So that the upper transfer plate can be fully inserted under the patient's body.
Japanese Patent No. 2825516 JP 2001-37815 A

  However, in the patient transfer device of Patent Document 1, two rollers that are movable in the left-right direction at predetermined intervals are arranged between the left and right wound bodies of the upper and lower endless belts, and are arranged for each roller. The distance that the wound body can be extended from the patient transfer device is within the range where the left and right rollers do not collide with each other. Therefore, the overhang distance is short, and in order to overhang the patient on the bed, it is necessary to increase the width of the left and right sides of the patient transfer device, so that a narrow space interval can be quickly set. It is unsuitable for patient transfer devices such as hospitals that need to move, and it is difficult to actually apply them.

  Further, the structure is complicated because a motor for driving the transfer plate, two motors for separately driving the two separation plates, and a drive device for separately driving the four locking devices are required. At the same time, there is a problem that the control becomes complicated.

  Moreover, in the transfer assistance apparatus of patent document 2, an upper transfer board can fully be inserted under a patient's body by two-stage extension. However, this device is designed to project the upper transfer plate on only the left and right sides of the transfer assistance device. When transporting a patient who is sleeping on a bed or an operating table in a hospital or the like, Although it is necessary to transfer the patient from either side, as described above, in the transfer assistance device that can transfer only on the left and right sides, the direction must be changed depending on the transfer direction, and the operation is In addition to being troublesome, there are cases where the direction cannot be changed between narrow beds.

  In addition, in the transfer assistance device of Patent Document 2, it is conceivable that the upper transfer plate is extended symmetrically so that the upper transfer plate can be extended to the left and right sides. However, since the left and right extension mechanisms are independent, there is a switching mechanism for the extension mechanism at the top of the transfer assistance device. There is a problem that it is difficult to transfer a patient on the left and right center of the apparatus.

  The present invention has been made in view of the above-described conventional problems, and a patient transport device that allows a patient to be transferred by extending a transfer table with a large stroke on the left and right sides of the apparatus main body with a simple configuration. It was made for the purpose of providing.

  The present invention provides a transfer table comprising an upper winding body and lower left and right lower winding bodies so as to be able to extend to the left and right of the apparatus main body by a transfer mechanism, and is wound around the upper winding body to An endless upper belt guided to the lower part through the lower winding body forms a first length adjusting portion in the apparatus main body, and is wound around each of the lower winding bodies and fixed at both ends to the apparatus main body. Forming a second length adjusting unit in the apparatus main body, driving the first length adjusting unit and the second length adjusting unit with one adjustment driving mechanism, and providing the first length adjusting unit with a brake device. The upper belt on the upper surface of the upper winding body is retracted at the same speed as the overhanging speed when the transfer table is extended, and the upper belt on the upper surface of the upper winding body is retracted when the transfer table is retracted. A state where the transfer table moves forward at the same speed as the pull-in speed, and the transfer table The upper belt of the upper wrapping material upper surface when projecting-retracting is related to the patient carrier, characterized in that it has adapted to be switched between a stationary state relative to the transfer rack.

  In the above, the extension / retraction operation of the transfer table by the transfer mechanism and the length adjustment operation of the upper and lower belts by the first and second length adjustment units are driven by a single drive source. It may be.

  The transfer mechanism may include a wheel provided at the left and right end portions of the apparatus main body and a chain meshed with the wheel.

  The transfer mechanism may include a rack gear and a pinion.

  Further, the transfer table may be supported by a multi-stage transfer mechanism to increase the lateral extension stroke.

  According to the patient transport device of the present invention, the transfer table on the device body can be extended to the left and right with a large stroke, so that the patient can be easily transferred on both the left and right sides of the patient transport device, In addition, there is an effect that the configuration can be simplified by reducing the number of installed drive devices and brake devices.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  FIG. 15 is a front view showing an example of a schematic shape of the patient transport device of the present invention. The patient transport device 1 includes a device body 3 that can be run with a caster 2, and on the device body 3, A transfer table 10 is provided which includes an upper wound body 5 around which the upper belt 4 is wound and left and right lower wound bodies 8 and 9 around which separate lower belts 6 and 7 are wound. The transfer table 10 can be extended with a large stroke of substantially the entire width of the apparatus main body 3 on either the left or right side, and the patient can be transferred between the bed 11 or the like on either side. It can be transported. At this time, the apparatus main body 3 may not include the caster 2, and the apparatus main body 3 may include an elevating device so that the transfer table 10 can be moved up and down.

  FIGS. 1 and 2 show the configuration of the transfer table 10 and the upper belt 4 and the lower belts 6 and 7 in the patient transport device 1. The transfer table 10 includes the upper wrapping body 5. The lower wrapping bodies 8 and 9 are arranged at the lower part with a space left and right, and the lower wrapping bodies 8 and 9 are integrally fixed to the upper wrapping body by fixing members 12 provided at the front and rear. have.

  An endless upper belt 4 is stretched between the upper wound body 5 and the apparatus main body 3, and both ends are disposed between the lower wound bodies 8 and 9 and the apparatus main body 3. Lower belts 6 and 7 fixed to the main body 3 are stretched over.

  The transfer table 10 can be extended and retracted to the left and right of the apparatus main body 3 by a transfer mechanism 13 shown in FIGS. The transfer mechanism 13 has fixed points at the left and right ends of the transfer table 10 by crossing both ends of the chain 15 meshed from below with the wheels 14 and 14 provided at the left and right width ends of the apparatus body 3. A transfer drive motor 18 is connected to one wheel 14 (right wheel in FIG. 3) via another chain 17, and the transfer mechanism 13 has a structure fixed to the transfer mechanism 13. Driving is performed. When the transfer drive motor 18 of the transfer mechanism 13 is driven, the transfer table 10 is moved from the upper part of the apparatus main body 3 shown in FIG. The left side) can be extended with a large stroke substantially the same as the lateral width of the apparatus body 3. At this time, the weight of the transfer table 10 protruding to the side is received by the bed (FIG. 15), and therefore the transfer mechanism 13 does not need to receive the weight of the transfer table 10.

  As described above, when the transfer table 10 is extended to the side by the transfer mechanism 13, the extension lengths of the upper belt 4 and the lower belts 6 and 7 change as shown in FIGS. Therefore, it is necessary to have a configuration capable of adjusting (absorbing) this length.

  When the patient on the bed (FIG. 15) is scooped onto the transfer table 10, the transfer table 10 is extended on the bed, and at this time, the upper belt 4 on the upper surface of the upper winding body 5 is placed on the transfer table 10. On the other hand, the patient is scooped onto the transfer table 10 by moving it in the backward direction opposite to the overhanging direction, and at the same time, the lower part of the lower wrapping bodies 8 and 9 below. The belts 6 and 7 also need to be moved under the patient without causing friction with the bed 11 by moving the belts 6 and 7 in the reverse direction opposite to the overhanging direction with respect to the transfer table 10. There is.

  Further, when the patient scooped up on the transfer table 10 as described above is moved to the apparatus main body 3, the transfer table 10 is retracted, and at this time, the upper belt 4 on the upper surface of the upper winding body 5 is retracted. Needs to be able to move to the apparatus main body 3 while being held on the transfer table 10 while being stationary with respect to the transfer table 10, and at this time, the lower part of the lower surface of the lower winding bodies 8 and 9. The belts 6 and 7 need to move in the forward direction opposite to the retracting direction with respect to the transfer table 10 so that the transfer table 10 does not generate friction with the bed 11.

  On the other hand, when the patient placed on the transfer table 10 located on the apparatus main body 3 is moved onto the bed 11, the transfer table 10 is extended to a predetermined position, and at this time, the upper winding body is extended. 5 The upper belt 4 on the upper surface is in a stationary state with respect to the transfer table 10 and needs to move on the bed 11 while holding the patient on the transfer table 10. , 9 The lower belts 6 and 7 on the lower surface of the transfer table 10 are moved in the retreating direction opposite to the extending direction of the transfer table 10 so that the transfer table 10 does not generate friction with the bed 11. It is necessary to. Subsequently, when the patient on the transfer table 10 is transferred onto the head 11 and transferred, the transfer table 10 is retracted. At this time, the upper belt 4 on the upper surface of the upper winding body 5 is moved to the transfer table 10. The lower belts 6 and 7 on the lower surface of the lower wrapping bodies 8 and 9 are also retracted with respect to the transfer table 10 at this time. Therefore, it is necessary to prevent the transfer table 10 from generating friction with the bed 11 by moving in the reverse direction.

  In order to perform the above operation, as shown in FIG. 1, the endless upper belt 4 wound around the upper wound body 5 is led to the lower part through the space between the left and right lower wound bodies 8, 9, A first length adjusting portion 22 is formed so as to be symmetrically provided with a pair of folded portions 21 a and 21 b by being hung between a fixed pulley 19 and a moving pulley 20 provided in the apparatus main body 3. At this time, a belt guide 10a is provided between the upper wrapping body 5 and the lower wrapping bodies 8 and 9 so as to always guide the upper belt 4 on the apparatus main body 3. Yes.

  Further, the lower belts 6 and 7 wound around the left and right lower wound bodies 8 and 9 are fixed to the apparatus main body 3 at fixing points 23 at both ends, and the intermediate belt is provided at the intermediate part thereof. A second length adjusting portion 27 is formed so as to be symmetrically provided with the folded portions 26a and 26b by being hung between a fixed pulley 24 and a movable pulley 25 provided in the main body 3.

  Then, the shafts of the moving pulleys 20 and 25 of the first length adjusting unit 22 and the second length adjusting unit 27 are pivotally supported by connecting rods 28 and 29, and the connecting rods 28 and 29 are shown in FIG. It is connected to one adjustment drive mechanism 31 as shown. In the adjustment drive mechanism 31 of FIG. 5, the nuts 30 fixed to the connecting rods 28 and 29 are respectively attached to the reverse screws 32a and 32b of the screw shaft 32 having the reverse screws 32a and 32b rotated by the adjustment drive motor 31a. Screwed together. When the adjustment drive motor 31a is driven, the connecting rods 28 and 29 are moved closer to and away from each other, and the movable pulleys 20 and 25 of the first length adjustment unit 22 and the second length adjustment unit 27 are fixed pulleys 19 and 25, respectively. The lengths of the upper belt 4 and the lower belts 6 and 7 are adjusted at the same time by approaching and moving away from the belt 24.

  At this time, as shown in FIG. 1, each folded-back portion 21a, 21b, 26a, 26b has two movable pulleys 20, 25 with respect to one fixed pulley 19, 24, and upper belt 4 and lower belt 6, 7, the length of the moving stroke of the moving pulleys 20 and 25 can be adjusted by just half the stroke ST / 2 when the overhanging stroke of the transfer table 10 is ST. ing. In FIG. 1, the folding portions 21a, 21b, 26a, and 26b are folded in the horizontal direction, but may be folded in the vertical direction.

  Further, it is necessary to synchronize the extension of the transfer table 10 and the length adjustment of the upper belt 4 and the lower belts 6 and 7, and accordingly, the transfer drive motor of the transfer mechanism 13 shown in FIG. 18 and the adjustment drive motor 31a of the adjustment drive mechanism 31 of FIG. 5, it is necessary to synchronize the drive of the transfer drive motor 18 and the adjustment drive motor 31a.

  On the other hand, FIG. 3 shows a configuration in which the extension operation of the transfer table 10 by the transfer mechanism 13 and the length adjustment operations of the upper and lower belts 4, 6, 7 by the adjustment drive mechanism 31 are synchronized. Yes. That is, the intermediate wheel 33 is engaged with the chain 17 driven by the transfer drive motor 18 provided on one side in the width direction of the apparatus body 3, and the intermediate wheel 33 has a diameter that is ½ of the diameter of the intermediate wheel 33. A drive wheel 34 is provided, and a support wheel 35 is provided on the other side of the apparatus main body 3, and an endless drive chain 36 is hung between the drive wheel 34 and the support wheel 35. An adjustment drive mechanism 31 ′ is constructed in which a fixing member 37 for fixing the connecting rod 28 is attached to one of the drive chains 36, and a fixing member 38 for fixing the connecting rod 29 is attached to the other of the driving chains 36. Yes.

  According to this configuration, when the transfer drive motor 18 drives the single drive source P to extend the transfer table 10, the connecting rods 28 and 29 are connected to each other by the drive chain 36 of the adjustment drive mechanism 31 '. Thus, the adjustment of the lengths of the upper belt 4 and the lower belts 6 and 7 to be increased is performed synchronously.

  Further, a first brake device 39 that can fix the movement of the upper belt 4 is provided at an intermediate portion between the turn-back portions 21a and 21b in the first length adjusting portion 22. Further, a second brake device 40 that can fix the movement of the upper belt 4 is provided in the fixed pulley 19 that is intermediate between the one folded portion 21a of the first length adjusting portion 22, and further, A third brake device 41 that can fix the movement of the upper belt 4 is provided in the fixed pulley 19 that is in the middle of the other folded portion 21 b of the length adjusting unit 22.

  FIG. 6 shows the action when the transfer table 10 is extended to the left side to scoop up the patient on the bed 11 (FIG. 15) and the movement of the upper belt 4 and the lower belts 6 and 7. At the time of removal, the first brake device 39 is operated to fix the upper belt 4 at this position, and at this time, the other second and third brake devices 40 and 41 are opened. In FIG. 6, V is the overhanging speed at which the transfer table 10 is extended, and the other numbers (0) indicate the speed with respect to the outside (the state of being stationary with respect to the outside).

  When the transfer drive motor 18 (drive source P) in FIG. 3 is driven to extend the transfer table 10 at a speed V as shown in FIG. 6, the connection is made as shown in FIG. 6 by the adjustment drive mechanism 31 ′ in FIG. The eaves 28 and 29 approach each other at a speed of V / 2, and the upper belt 4 and the lower belts 6 and 7 are fed out from the folded portions 21a, 21b, 26a and 26b at a speed of 2V. Thereby, while the transfer table 10 is extended at a speed of V, the upper belt 4 has a speed of 0 to the outside, that is, the upper belt 5 is transferred to the upper surface of the upper wound body 5. Since it moves in the reverse direction opposite to the extension direction at the same speed V as the extension speed V of the table 10 (2V-V = V), the transfer table 10 enters under the patient on the bed and transfers the patient. It will begin to crawl up to 10. At this time, the lower belts 6 and 7 on the lower surfaces of the lower winding bodies 8 and 9 also move at the speed V in the reverse direction opposite to the protruding direction with respect to the transfer table 10 (the speed is 0 for the outside). There is no friction with the bed, so the transfer table 10 can easily slip under the patient.

  FIG. 7 shows the action of moving the patient on the transfer table 10 located on the apparatus body 3 onto the bed and the movement of the upper belt 4 and the lower belts 6 and 7. When the table 10 is extended to move the patient onto the bed, the second brake device 40 on the extension side is operated to fix the upper belt 4 at this position, and at this time, the other first and third brakes are fixed. The devices 39 and 41 are left open.

  In this state, when the transfer drive motor 18 (drive source P) of FIG. 3 is driven and the transfer table 10 is extended at the speed V as shown in FIG. 7, the turn-back portions 26a and 26b of the second length adjusting portion 27 are formed. The lower belts 6 and 7 are fed out at a speed of 2V, while the upper belt 4 is fed at a speed of V from the folded-back portion 21a on the overhanging side (left side) of the first length adjusting portion 22; It is fed out at a speed of 3V from the opposite side (right side). Due to this speed difference, the transfer table 10 is extended at a speed of V, whereas the upper belt 4 on the upper surface of the upper wound body 5 is also fed out in the same direction at the same speed V. The patient on the transfer table 10 is moved onto the bed while being placed on the transfer table 10 without moving with respect to the upper surface of the upper wrapping body 5. At this time, the lower belts 6 and 7 on the lower surfaces of the lower winding bodies 8 and 9 move at a speed V in the reverse direction opposite to the overhang direction with respect to the transfer table 10 (speed 0 for the outside). There is no friction between the transfer table 10 and the bed 11.

  As shown in FIG. 6, when the transfer table 10 that has picked up the patient is moved onto the apparatus main body 3, the second brake device 40 on the overhang side is operated in this position as in FIG. In the state where the upper belt 4 is fixed and the other first and third brake devices 39 and 41 are opened at this time, the transfer drive motor 18 (drive source P) shown in FIG. By retracting 10, the patient on the transfer table 10 is moved onto the apparatus main body 3 while being held on the transfer table 10 without moving with respect to the upper surface of the upper winding body 5. At this time, the lower belts 6 and 7 on the lower surfaces of the lower winding bodies 8 and 9 move at a speed V in the forward direction opposite to the retracting direction with respect to the transfer table 10 (speed 0 for the outside). There is no friction between the transfer table 10 and the bed 11.

  Further, as described with reference to FIG. 7, when the patient on the transfer table 10 extended on the bed is transferred to the bed and transferred, the first brake device 39 on the extended side is operated as in FIG. The upper belt 4 is fixed at this position, the other brake devices 40 and 41 are opened, and the transfer table 10 is retracted by reversing the drive of the transfer drive motor 18 (drive source P) in FIG. Since the upper belt 4 moves in the forward direction opposite to the retracting direction at the same speed V as the retracting speed V of the transfer table 10 with respect to the upper surface of the upper winding body 5, the patient on the transfer table 10 is placed on the bed. The transfer table 10 can be retracted while being fed out. At this time, the lower belts 6 and 7 on the lower surfaces of the lower winding bodies 8 and 9 move at a speed V in the forward direction opposite to the retracting direction with respect to the transfer table 10 (speed 0 for the outside). There is no friction between the transfer table 10 and the bed 11.

  Further, when the transfer table 10 is extended to the right side of the apparatus main body 3, except for operating the brake device 41 in place of the operation of the brake device 40, operation similar to the case of extending to the left side is performed similarly. Can act.

  Next, the operation of the above embodiment will be described.

  As shown in FIG. 6, when the transfer table 10 is extended to the left side of the apparatus main body 3 and the patient on the bed 11 (FIG. 15) is scooped, the first brake device 39 is operated to this position. Then, the upper belt 4 is fixed and the other second and third brake devices 40 and 41 are opened.

  In this state, when the transfer drive motor 18 (drive source P) of FIG. 3 is driven and the transfer table 10 is extended to the left as shown in FIGS. 2, 4, and 6, the adjustment drive mechanism of FIG. The connecting rods 28 and 29 are moved closer to each other by 31 ', and the distance between the moving pulleys 20 and 25 and the fixed pulleys 19 and 24 in FIG. The length increases synchronously.

  Therefore, as shown in FIG. 6, the transfer table 10 is extended at a speed of V, whereas the upper belt 4 on the upper surface of the upper winding body 5 is opposite to the extension direction of the transfer table 10. It moves at the same speed in the retreating direction (the speed is 0 for the outside) and digs under the patient, so that the patient can be scooped on the transfer table 10. At this time, the lower belts 6 and 7 on the lower surfaces of the lower winding bodies 8 and 9 move at a speed V in the reverse direction opposite to the overhang direction with respect to the transfer table 10 (speed 0 for the outside). There is no friction between the transfer table 10 and the bed 11. Further, FIG. 6 illustrates the case where the transfer table 10 is extended to the left side and the patient on the left bed is scooped. However, the patient on the right bed is similarly read by extending the transfer table 10 to the right side. Can be taken.

  On the other hand, as shown in FIG. 7, when the patient on the transfer table 10 located on the apparatus body 3 is moved onto the bed, the upper belt 4 is moved by operating the second brake device 40 on the overhang side. At this time, the other first and third brake devices 39 and 41 are opened.

  In this state, when the transfer drive motor 18 (drive source P) of FIG. 3 is driven and the transfer table 10 is extended to the left as shown in FIGS. 2, 4, and 6, the adjustment drive mechanism of FIG. The connecting rods 28 and 29 are moved closer to each other by 31 'and the distance between the movable pulleys 20 and 25 and the fixed pulleys 19 and 24 in FIG. The length of increases synchronously.

  Therefore, as shown in FIG. 7, when the transfer table 10 is extended at a speed of V, the upper belt 4 on the upper surface of the upper winding body 5 is also fed out in the same direction at the speed V. The patient on the table 10 moves on the bed while being placed at the same position without moving with respect to the upper surface of the upper wound body 5. At this time, the lower belts 6 and 7 on the lower surfaces of the lower winding bodies 8 and 9 move at a speed V in the reverse direction opposite to the overhang direction with respect to the transfer table 10 (speed 0 for the outside). There is no friction between the transfer table 10 and the bed 11.

  Further, when the patient scooped up on the transfer table 10 by the operation of FIG. 6 is moved onto the apparatus main body 3, as shown in FIG. 7, the second brake device 40 on the front side of the retracting side is operated to operate the upper belt. 4 is fixed, and the other first and third brake devices 39 and 41 are opened at this time.

  Then, when the transfer drive motor 18 (drive source P) of FIG. 3 is driven in the direction opposite to that of the extension, the upper surface of the upper winding body 5 is moved when the transfer table 10 is drawn at a speed of V. Since the upper belt 4 also moves at the speed V, the patient on the transfer table 10 moves on the apparatus main body 3 while being placed at the same position without moving on the upper surface of the upper winding body 5. . At this time, the lower belts 6 and 7 on the lower surfaces of the lower winding bodies 8 and 9 move at a speed V in the forward direction opposite to the retracting direction with respect to the transfer table 10 (speed 0 for the outside). There is no friction between the transfer table 10 and the bed 11.

  In addition, when the patient on the transfer table 10 bulged on the bed by the operation of FIG. 7 is transferred onto the bed, the first brake device 39 on the front side of the pull-in side is operated as in FIG. The belt 4 is fixed, and the other second and third brake devices 40 and 41 are opened at this time.

  In this state, when the transfer drive motor 18 (drive source P) in FIG. 3 is driven reversely and the transfer table 10 is retracted, the upper belt 4 retracts the transfer table 10 with respect to the upper surface of the upper winding body 5. Since it moves in the forward direction opposite to the retracting direction at the same speed V as the speed V, the transferring table 10 is retracted while sending the patient on the transferring table 10 onto the bed.

  When the transfer table 10 is extended to the right side of the apparatus body 3 to move the patient on the bed, it is symmetrical to the case where the transfer apparatus 10 is extended to the left side except that the brake device 41 is operated instead of the operation of the brake device 40. It can be made to act similarly by performing this operation.

  FIG. 8 shows another example of the transfer mechanism 13. The transfer mechanism 13 is provided with a rack gear 42 integrally formed at the lower part of the transfer table 10 with substantially the same left and right width, and the apparatus body 3. There are cases in which pinions 43 and 44 meshing with the rack gear 42 are provided at the left and right end portions.

  FIG. 9 shows still another example of the transfer mechanism 13. This transfer mechanism 13 is provided with a rack gear 42 integrally formed at the lower part of the transfer table 10 with substantially the same left and right width, The apparatus main body 3 is provided with a lower rack gear 45 having the same width as the rack gear 42, and one pinion 46 is provided between the rack gear 42 and the lower rack gear 45.

  Also in the transfer mechanism 13 of FIGS. 8 and 9, the transfer table 10 can be extended to the left and right with a stroke substantially the same as the left and right width of the apparatus body 3.

  10 and 11 show the structure of the transfer mechanism 13 'in which the extension stroke of the transfer table 10 is further increased. The system using the wheel 14 and the chain 15 in FIG. 3, the rack gear 42 in FIG. The transfer table 10 can be extended in two stages as a configuration combining a method in which one pinion 46 is provided between the lower rack gear 45 and the lower rack gear 45. According to this configuration, the transfer table 10 can be extended approximately twice the width of the apparatus body 3 with respect to the side of the apparatus body 3.

  On the other hand, when the extension stroke of the transfer table 10 is increased as described above, it is necessary to increase the adjustment amounts of the lengths of the upper belt 4 and the lower belts 6 and 7. For this reason, as shown in FIG. 12, the number of turns of the turn-back portions 21a, 21b of the first length adjustment portion 22 and the turn-back portions 21a, 21b of the second length adjustment portion 27 is increased to increase the adjustment amount. ing. In FIG. 12, each turn-back portion 21a, 21b, 26a, 26b includes two sets of two moving pulleys 20, 25, so that the length adjustment amount is twice that in the case of FIG. The moving strokes of the moving pulleys 20 and 25 can be adjusted in length by the ST / 4 stroke, where ST is the overhanging stroke in one stage of the transfer table 10. 11 is provided with intermediate winding bodies 8 ′ and 9 ′ for receiving the upper belt 4 and the lower belts 6 and 7 when the transfer table 10 is extended in two stages. ing.

  According to the above configuration, the transfer table 10 is extended from the extension of the first stage extension stroke ST as shown in FIG. 13 to the extension of the stroke 2ST by the second stage extension as shown in FIG. Therefore, the patient can be transferred by extending the transfer table 10 with the apparatus main body 3 having a narrow width.

  According to the patient transport device 1, the transfer table 10 on the device body 3 can be transferred to the left and right with a large stroke, so that the patient can be easily transferred on the left and right sides of the patient transport device 1. In addition, since the number of drive devices (drive source P) and brake devices 39, 40, 41 can be reduced, the configuration can be greatly simplified.

  The patient transport device of the present invention is not limited to the above-described embodiment, and can be applied to transport of various items such as various luggage other than the patient, and also within the scope not departing from the gist of the present invention. Of course, various changes can be made.

It is a front view which shows the structure of the transfer stand of the patient conveying apparatus which concerns on this invention, and an upper belt and a lower belt. It is a front view which shows the state which extended the transfer stand of FIG. It is a front view which shows the transfer mechanism of the transfer stand of the patient conveyance apparatus which concerns on this invention. It is a front view which shows the state which extended the transfer stand of FIG. It is a front view which shows an example of an adjustment drive device. It is a front view which shows the action | operation of the upper belt and the lower belt at the time of scooping. It is a front view which shows the action | operation of the upper belt and the lower belt at the time of transfer. It is a front view which shows the other example of a transfer mechanism. It is a front view which shows the further another example of a transfer mechanism. It is a front view which shows the structural example of the transfer mechanism which further enlarged the overhanging stroke of the transfer stand. It is a front view which shows the state which extended the transfer stand of FIG. FIG. 12 is a front view showing an example in which the adjustment amount of the lengths of the upper belt and the lower belt is increased corresponding to FIGS. 10 and 11. It is a front view which shows the state which extended the transfer stand of FIG. 12 by 1 step. It is a front view which shows the state which extended the transfer stand of FIG. 12 in 2 steps. It is a front view which shows an example of schematic shape of the patient conveyance apparatus of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Patient conveyance apparatus 3 Apparatus main body 4 Upper belt 5 Upper winding body 6,7 Lower belt 8,9 Lower winding body 10 Transfer stand 13 Transfer mechanism 13 'Transfer mechanism 14 Wheel 15 Chain 18 Transfer drive motor ( Drive source P)
22 1st length adjustment part 23 fixed point 27 2nd length adjustment part 31 adjustment drive mechanism 31 'adjustment drive mechanism 31a adjustment drive motor 39 1st brake device 40 2nd brake device 41 3rd brake device 42 rack gear 43, 44 Pinion 45 Lower rack gear 46 Pinion

Claims (5)

  A transfer table composed of an upper winding body and lower left and right lower winding bodies is provided so as to be able to extend to the left and right of the apparatus main body by a transfer mechanism, and is wound around the upper winding body and the left and right lower winding bodies An endless upper belt led to the lower part through the gap forms a first length adjusting portion in the apparatus main body, and a lower belt in which both ends are fixed to the apparatus main body while being wound around each of the lower winding bodies is attached to the apparatus main body. A second length adjusting portion is formed, the first length adjusting portion and the second length adjusting portion are driven by a single adjustment drive mechanism, and the first length adjusting portion includes a brake device; The upper belt on the upper surface of the upper winding body retracts at the same speed as the overhanging speed with respect to the transfer table when the loading table is extended, and the upper belt on the upper surface of the upper winding body becomes the transfer table when the transfer table is retracted. On the other hand, it moves forward at the same speed as the pull-in speed, Patient carrier which upper belt of the upper winding body top surface is characterized by being adapted to be switched between a stationary state relative to the transfer rack when write.   The extension / retraction operation of the transfer table by the transfer mechanism and the length adjustment operation of the upper and lower belts by the first and second length adjustment units are driven by a single drive source. The patient transport device according to claim 1.   The patient transfer apparatus according to claim 1, wherein the transfer mechanism includes a wheel provided at a left and right end of the apparatus main body and a chain meshed with the wheel.   The patient transfer device according to claim 1, wherein the transfer mechanism includes a rack gear and a pinion.   The patient transfer device according to any one of claims 1 to 4, wherein the transfer table is supported by a multistage transfer mechanism so that a laterally extending stroke is increased.

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