JP2011160888A - Cordless power supply device for medical or nursing-care apparatus within room - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cordless power supply device for medical or nursing-care apparatuses within a room, capable of maintaining the use environment of medical or nursing-care apparatuses within a room, such as medical or nursing-care electric-powered beds and chairs, in a clean condition by eliminating power cords. <P>SOLUTION: The cordless power supply device has a power supply unit 15 that supplies power to the medical or nursing-care apparatuses 40-42 within the room, and the power supplied from the power supply unit 15 is either accumulated within an electricity storage unit 14, or supplied to the medical or nursing-care apparatuses 40-42 within the room. The cordless power supply device also has a control circuit 12b that controls the amount of power to be supplied to the apparatuses 40-42, and a power supply circuit 12a that supplies the power accumulated in the electricity storage unit 14 to the apparatuses 40-42 according to a signal from the control circuit 12b. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a cordless power supply device for indoor medical or nursing care equipment, and in particular, supplies power to equipment that needs to be used in a clean state, such as an electric bed and an electric chair for medical care and nursing care. The present invention relates to a cordless power supply device for indoor medical or nursing care facilities.

  In electric beds used for medical and nursing care, it is necessary for the user to wake up the upper body on the bed, for example, for eating or watching TV or reading. Then, the electric bed which can raise / lower the back bottom and knee bottom of a bed electrically is developed (patent document 1). In addition, an electric chair having a configuration that assists a user's independence by tilting a seat or a backrest from a seated state has been developed (Patent Document 2).

  FIG. 13 is a schematic view showing an example of a conventional electric bed disclosed in Patent Document 1. As shown in FIG. FIG. 14 is a block diagram showing a power supply path in a conventional electric bed. As shown in FIG. 13, the conventional electric bed 20 is supplied with electric power by inserting the power plug 13 into the outlet 13a. The electric bed 20 is provided with a controller 11 having a switch for instructing a back raising operation or a back lowering operation, for example. The controller 11 is connected to a control circuit 12b in the control box 12 via a cord, and a command signal from the controller 11 is input to the control circuit 12b. As shown in FIG. 14, a power supply circuit 12 a and a control circuit 12 b are provided in the control box 12. Power is supplied to the power supply circuit 12b from the outlet 13a via the power plug 13 and the power cord. The power supply circuit 12a incorporates circuits such as an A / D converter circuit and a rectifier circuit, and each unit such as an actuator 40, a weight scale 41, and an illumination 42 is controlled by a control signal from the control circuit 12b. The supply of electric power for driving is started or stopped.

  As shown in FIG. 13, in the electric bed 20 provided with the back raising and lowering mechanism, the back bottom 2, the back bending portion 3, the waist bottom 4, the knee bottom 5, the knee bending portion 6 and the foot bottom 7 are provided on the upper surface. Are connected in this order. The back bottom 2 and the waist bottom 4 are connected by a bendable back bending portion 3, and the knee bottom 5 and the foot bottom 7 are similarly connected by a bendable knee bending portion 6. The waist bottom 4 is fixed. The back bottom 2 rotates so that the tip on the head side is lifted, and reversely rotates so as to return to the horizontal, and swings around the back curved portion 3 side. The knee bottom 5 is rotated so that the tip of the knee bending portion 6 side is lifted, and is reversely rotated so as to return to the horizontal, and swings around the waist bottom 4 side. The back bending portion 3 and the knee bending portion 6 are formed by arranging a large number of rods in parallel and parallel to each other, and connecting the rods to each other so that the interval between the rods can be varied. The entire portion 3 and the knee bending portion 6 extend and contract in the connecting direction of the bars, and bend continuously and smoothly in the connecting direction of the bars. The electric bed 20 is configured such that a frame that supports the back bottom 2 and the like is moved up and down by an actuator 40 so that the height of the bed can be adjusted.

  FIGS. 15A and 15B are schematic views showing a configuration in which the back bottom 2 is driven by an actuator 40 in the conventional electric bed 20 shown in FIG. As shown in FIGS. 15A and 15B, the back bottom 2 has a link 23 fixed to a support plate 24 fixed to the back surface thereof, and the link 23 has one end connected to the frame 21. The link 22b and the stay 25b (respectively connected to the frame 21 at the rotation fulcrum 22c and the rotation fulcrum 25c so as to be rotatable) are connected to the other end, and a link mechanism is configured between the link 23, the link 22b, and the stay 25b. ing. Further, one end of the link 26a is rotatably connected to the frame 21 by a rotation fulcrum 26c, and the other end of the link 26a is rotatably connected to the tip of the movable part of the actuator 40 by a rotation fulcrum 26f. ing. One end of a link 26b is rotatably connected to the link 26a by a rotation fulcrum 26d. A roller 26e is provided at the other end of the link 26b, and this roller 26e is in contact with a groove on the back surface of the support plate 24. Then, in response to a command signal from the controller 11, when the control circuit 12b transmits a control signal to the power supply circuit 12a and the power supply circuit 12a supplies power to the actuator 40, the link 26a rotates with the rotation fulcrum 26c as a fulcrum. The roller 26e provided at one end of the back 26b pushes up the back bottom 2 while rolling the groove on the back surface of the back bottom 23, and the back raising angle of the back bottom 2 is changed by the link 22b and the stay 25b.

  FIG. 16 is a side view showing each frame and link mechanism, a seat portion, a backrest, and a footrest in the conventional electric chair disclosed in Patent Document 2. In the electric chair 17, a plurality of links and frames are connected to the base 17 a in the same manner as the electric bed 40 shown in FIGS. 13 and 15, and the movable portion of the electric actuator 40 advances and the electric motor 43. 16a, the seat portion 17d, the backrest 17c, the footrest 17e, and the armrest 17b are moved from the state shown in FIG. 16A to the state shown in FIG. 16B and further to the state shown in FIG. The seat 17d and the backrest 17c are further tilted. Conversely, the seat portion 17d, the backrest 17c, and the footrest are moved from the state shown in FIG. 16C to the state shown in FIG. 16A by retracting the movable portion of the actuator 40 and rotating the motor 43 in the reverse direction. The positions of 17e and armrest 17b are restored.

  Some conventional electric chairs 17 shown in FIG. 16 have a reclining function in which the backrest 17c and the footrest 17e are tilted by driving the actuator 40 and the motor 43, for example, as shown in FIG. Further, for example, an electric chair used for medical purposes is provided with a wheel on the bottom of the base 17a so that the user can move the electric chair 17 together with the electric chair 17 on the electric chair 17. Some are.

  Also in the conventional electric chair 17, the power supply of the actuator 40 and the motor 43 is supplied with the power plug and the power cord as in the conventional electric bed 40 shown in FIG. 14, and the power plug is inserted into the outlet. Thus, electric power is supplied.

JP 2008-220603 A JP 2006-34469 A Japanese Patent Laid-Open No. 10-247266

  The above-described conventional technology has the following problems. In the conventional electric bed 20 disclosed in Patent Document 1, a power cord and a power plug 13 are used to obtain driving power for the actuator 40 for raising and lowering the back, and the power plug 13 is placed at the corner of the room. It is necessary to connect the power supply device of the electric bed 20 to an external power supply by inserting it into an installed outlet. The same applies to the conventional electric chair disclosed in Patent Document 2. Therefore, for example, when moving the bed 20, it is necessary to remove the power plug 13 from the outlet 13a and move it while it is placed on the bed, for example, or wind it up with a cord reel or the like. In this case, the outlet 13a is often placed on the wall near the floor, and it is necessary for the caregiver or nurse to touch the unsanitary power cord in contact with the floor, etc. Not preferable. Further, there is a possibility that the power cord extracted from the outlet 13a may be sandwiched between the frames for the lifting mechanism.

  In order to prevent the power cord from coming into contact with the floor surface or the like, for example, the curl cord disclosed in Patent Document 3 is used, and the slackness of the power cord can be reduced by the elastic force of the spiral cord. Conceivable. However, the curl cord is stretched by repeated expansion and contraction due to use over time, the spiral shape is deteriorated, the power cord is loosened again, and comes into contact with the floor surface or the like.

  In addition, when a cord reel is used to wind up the power cord, if dust adheres to the power cord, the dust also gets caught in the cord reel, and the power cord is stored in an unsanitary state. This is not preferable. Also, in recent electric beds with low floors, the space for storing the power cord is limited, and a cord reel can be installed to store a 7 mm diameter power cord as used conventionally. There is a problem that it is difficult.

  The present invention has been made in view of such problems, and by eliminating the power cord, the use environment of medical or nursing care equipment in the room such as an electric bed and an electric chair for medical and nursing care is kept clean. It is an object of the present invention to provide a cordless power supply apparatus for indoor medical or nursing care facilities that can be maintained.

  A cordless power supply device for indoor medical or nursing care equipment according to the present invention includes a power supply unit that generates power supplied to indoor medical or nursing care equipment, a control circuit that controls the supply of power to the equipment, A power storage unit for storing the power generated by the power supply unit, and a power source that supplies the equipment with the power stored in the power storage unit and / or the power generated by the power supply unit according to a signal from the control circuit And the power supply unit can supply power to the facility without being connected to an external power source.

  In the above cordless power supply apparatus for medical or nursing care facilities in the room, the power supply unit is, for example, a solar panel that converts light energy into electric energy. Alternatively, the power supply unit includes, for example, a piezoelectric element that converts vibration energy into electric energy.

  The cordless power supply apparatus for other medical or nursing care facilities in the room according to the present invention is capable of receiving power supplied to the medical or nursing care equipment in the room by being magnetically coupled to a power supply coil connected to an external power source. A power supply unit that includes a side coil and that can turn on and off the magnetic coupling between the power supply side coil and the power reception side coil, a control circuit that controls supply of power to the facility, and the power supply unit that receives power And a power supply circuit for storing the power stored in the power storage unit and / or the power from the power supply unit to the facility by a signal from the control circuit. It is characterized by.

  The indoor medical or nursing care facility is, for example, an electric bed or an electric chair that performs an operation of raising and lowering a back by driving an actuator with electric power from the power storage unit. In the case where the indoor medical or nursing care facility is an electric bed, for example, the power supply unit is a solar panel that converts light energy into electric energy, and the solar panel includes a side fence and a headboard of the electric bed. It is preferable that the light incident surface is attached to the footboard in an adjustable manner. Or when the said electric bed has a canopy, it is preferable that the said solar panel is attached to this canopy.

  In the above cordless power supply apparatus for medical or nursing care facilities in the room, the power storage unit can be connected to an external power source, and the power supplied from the external power source can also be stored as the power supplied to the facility can do.

  The cordless power supply apparatus for indoor medical or nursing care facilities according to the present invention has a power supply unit that generates power to be supplied to indoor medical or nursing care facilities, and can supply power without being connected to an external power source. If the cordless power supply device of the present invention is used in, for example, an electric bed and an electric chair for medical and nursing care, the electric bed and the electric chair can be driven without connecting the power cord to an external power source. It is. Therefore, the caregiver or nurse does not need to touch the power cord when moving the electric bed, the electric chair, etc., and can maintain the indoor medical or care facility use environment in a clean state.

  In addition, since it is possible to make the medical or nursing care equipment in the room cordless, the medical care or nursing care equipment in the room such as an electric bed and an electric chair can be easily provided without providing a cord reel or the like and storing the power cord. Can be moved.

  Further, the cordless power supply device is provided with a power storage unit for storing the power generated by the power supply unit. As a result, even when the amount of power generated by the power supply unit is small, the amount of power generated is accumulated over time by storing the generated power in the power storage unit, and if necessary, large power can be stored in indoor medical or nursing care facilities. Can be supplied.

  In the cordless power supply apparatus for other indoor medical or nursing care equipment of the present invention, the power receiving side coil of the power supply unit is magnetically coupled to the power feeding side coil connected to the external power source to the indoor medical or nursing care equipment. It is configured to be able to receive the supplied power. Thereby, even if it does not use a power cord for the connection of an electric power supply part and an external power supply, electric power can be supplied to indoor medical or nursing care equipment. For this reason, if the cordless power supply device of the present invention is used for, for example, an electric bed and an electric chair for medical use and nursing care, the electric bed and the electric chair can be driven without connecting the power cord to an external power source. Is possible. Therefore, the caregiver or nurse does not need to touch the power cord when moving the electric bed, the electric chair, etc., and the indoor medical or care facility use environment can be kept clean.

  Further, since the cordless power supply device is provided with a power storage unit for storing the power received by the power supply unit, even when the power received by the power supply unit is small, the power amount is stored by storing the power. Can be accumulated over time, and large electric power can be supplied to indoor medical or nursing care facilities as needed. Furthermore, even when the magnetic connection between the power feeding side coil and the power receiving side coil is turned off, the power stored in the power storage unit can be supplied to indoor medical or nursing care equipment as necessary.

It is a block diagram which shows the structure of the cordless power supply device to the medical or nursing care facility in the room which concerns on 1st Embodiment of this invention. It is a perspective view which shows the example which uses the cordless power supply device for the indoor medical or nursing care equipment which concerns on 1st Embodiment of this invention for an electric bed. (A) is a side view which shows the modification of the cordless power supply device to the medical or nursing care equipment in the room which concerns on 1st Embodiment of this invention, (b) shows a front view. It is a side view which shows the state which installed the solar panel in the footboard of the electric bed in the cordless power supply device to the medical or nursing care facility in the room which concerns on the modification of this invention. It is a side view which shows the state which installed the solar panel in the side fence of an electric bed in the cordless power supply device to the medical or nursing care equipment in the room which concerns on the modification of this invention. It is a side view which shows the state which installed the solar panel in the footboard of the electric bed, and the side fence in the cordless power supply device to the medical or nursing care facility in the room which concerns on the modification of this invention. It is a side view which shows the state which installed the solar panel in the canopy of the electric bed in the cordless power supply device to the medical or nursing care equipment in the room which concerns on the modification of this invention. It is a block diagram which shows the structure of the cordless power supply device to the medical or nursing care equipment in the room which concerns on 2nd Embodiment of this invention. It is a perspective view which shows the example which uses the cordless power supply device for the medical or nursing care equipment in the room which concerns on 2nd Embodiment of this invention for an electric bed. (A) is the schematic which shows a piezoelectric material module, (b) is sectional drawing which shows an example of a piezoelectric material. It is a block diagram which shows the structure of the cordless power supply device to the medical or nursing care equipment in the room which concerns on 3rd Embodiment of this invention. It is a figure which shows the state which installed the solar panel in the electric chair in the cordless power supply device to the medical or nursing care equipment in the room which concerns on embodiment of this invention. It is a perspective view which shows the conventional electric bed. It is a block diagram which shows the supply path | route of electric power in the conventional electric bed. (A), (b) is a side view which shows the back raising mechanism in the conventional electric bed. (A) thru | or (c) is a side view which shows each flame | frame and link mechanism, a seat part, a backrest, and a footrest in the conventional electric chair. It is a side view which shows the electric chair which has a reclining function.

  Hereinafter, a cordless power supply apparatus for indoor medical or nursing care facilities according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a block diagram showing a configuration of a cordless power supply device for indoor medical or nursing care facilities according to the first embodiment of the present invention, and FIG. 2 shows an indoor medical or nursing care facility according to the first embodiment of the present invention. It is a perspective view which shows the example which uses a cordless power supply device for an electric bed.

  The electric bed 1 of the present embodiment includes a back raising and lowering mechanism as a function for supporting the user's operation, and as shown in FIG. 1, is similar to the conventional electric bed 20 (FIGS. 13 to 15). The actuator 40 is provided and is electrically connected to the control circuit 12b in the control box 12 via a cord. A power supply circuit 12a and a control circuit 12b are provided in the control box 12, and are electrically connected to each other. Further, the electric bed 1 is provided with a controller 11 having a switch for instructing a back raising operation or a back lowering operation. The controller 11 is electrically connected to a control circuit 12b in the control box 12 via a cord, and a command signal from the controller 11 is input to the control circuit 12b. The power supply circuit 12a incorporates circuits such as an A / D conversion circuit and a rectifier circuit, and starts or stops the supply of drive power to the actuator 40 according to a control signal from the control circuit 12b. In addition to the actuator 40, the electric bed 1 is provided with, for example, a weight scale 41 and an illumination 42, and is connected to a control circuit 12 b in the control box 12, similarly to the actuator 40. Then, the control circuit 12b transmits a signal for starting and stopping the supply of driving power to the weight scale 41, the illumination 42, and the like to the power supply circuit 12a according to the command signal from the controller 11, and the control signal from the control circuit 12b. The power supply circuit 12a starts or stops transmission of driving power to each unit.

  As shown in FIG. 2, in this embodiment, the electric bed 1 is provided with a solar panel 15a. The solar panel 15a converts light energy into electric energy to generate driving power for each unit. . As shown in FIG. 1, the solar panel 15a is electrically connected to the power supply circuit 12a. The electric bed 1 is provided with a storage battery 14 and connected to a power supply circuit 12a. And it is comprised so that the electric power generated by the solar panel 15a can be stored in the storage battery 14. FIG. In addition, about another structure, it is the same as the conventional electric bed 20 shown in FIG. 13 thru | or FIG.

  Next, operation | movement of the electric bed provided with the cordless power supply device of this embodiment is demonstrated. In this embodiment, the solar panel 15a is provided in the electric bed 1, and the electric power generated by the solar panel 15a is stored in the storage battery 14 through the power supply circuit 12a. At this time, for example, the power storage amount of the storage battery 14 can be measured by the power supply circuit 12a. The measured power storage amount can be displayed on, for example, the controller 11 or a monitor provided separately from the controller 11. Moreover, the electric power generated by the solar panel 15a can be supplied to each unit via the power supply circuit 12a without being stored in the storage battery 14.

  In this state, when a user, an assistant, or the like operates a switch of the controller 11 to raise or lower the electric bed 1, a command signal from the controller 11 is input to the control circuit 12b. Next, the control circuit 12b transmits a control signal to the power supply circuit 12a so as to supply driving power for the actuator 40. At this time, the control circuit 12b can control the direction of current flow to the actuator 40 and the supply amount of power. That is, the control circuit 12b can control whether the movable part of the actuator 40 is advanced or retracted by controlling the direction of current flow to the actuator 40, and the storage battery 14 and / or the solar panel 15a. By controlling the amount of power supplied from the actuator to the actuator 40, the advance / retreat speed of the movable part of the actuator 40 can be controlled. When receiving the control signal from the control circuit 12b, the power supply circuit 12a supplies the electric power stored in the storage battery 14 and / or the electric power generated by the solar panel 15a to the actuator 40 via the control circuit 12b, or the actuator 40 directly. At this time, for example, the power supplied to the actuator 40 can be measured in the power supply circuit 12a, whereby the remaining amount of power stored in the storage battery 14 can be displayed on the controller 11 or a monitor provided separately from the controller 11.

  When driving power is supplied from the storage battery 14 and / or the solar panel 15a, the movable portion of the actuator 40 advances or retracts depending on the direction of current flow. As a result, like the conventional electric bed 20 shown in FIG. 15, the electric bed 1 constituted by connecting a plurality of frames, links and stays operates, and the back raising angle of the back bottom is changed.

  Even when the electric bed 1 is provided with units such as a weight scale 41 and an illumination 42, when the user, caregiver or nurse operates the switch of the controller 11, the controller 11 instructs the control circuit 12b. In response to the command signal, the control circuit 12b transmits a control signal for starting or stopping the supply of driving power to each unit to the power supply circuit 12a. Similarly to the actuator 40, the power stored in the storage battery 14 and / or the power generated by the solar panel 15a is supplied to each unit such as the scale 41 and the illumination 42, and the unit supplied with the power is driven. .

  When the electric bed 1 of the present embodiment is moved, the electric bed 1 is moved as it is, for example, by a wheel provided at the bottom of the bed.

  In the electric bed 1 of the present embodiment, a solar panel 15a is provided as the power supply unit 15, and thus, it is possible to convert light energy into electric energy and generate the drive power of units such as the actuator 40 in-house. it can. Further, unlike the conventional electric bed 20 shown in FIGS. 13 to 15, it is not necessary to supply power from an external power source such as the outlet 13a using the power plug 13 and the cord. Therefore, even when the electric bed 1 is moved, the caregiver or nurse does not need to remove the power plug 13 from the outlet 13a and does not need to contact the power cord, so that the use environment is kept clean. Can do.

  Moreover, the storage battery 14 is provided in the electric bed 1 of this embodiment, and the electric power generated by the solar panel 15 a can be temporarily stored in the storage battery 14. As a result, even when the amount of power generation per unit time in the solar panel 15a is small, the generated power can be constantly charged in the storage battery 14 as long as even a sufficient amount of light is irradiated for power generation. By storing the electric power generated by the battery 14 in the storage battery 14, the amount of electric power can be accumulated over time, and a large amount of electric power can be supplied to each unit as necessary. Further, even when a sufficient amount of light for power generation cannot be obtained, each unit can be driven using the power stored in the storage battery 14.

  Furthermore, the electric bed 1 of this embodiment can generate electric power by the solar panel 15a, and does not need to consume the electric power taken in from the outside, and can greatly contribute to the reduction of the environmental load.

  In addition, in the electric bed 1 of this embodiment, the storage battery 14 is provided with, for example, an adapter or a power plug so that it can be connected to an external power supply, and the storage battery 14 is charged with electric power supplied from the external power supply. Can do. Thereby, when the electric power stored in the storage battery 14 is small, the electric power stored in the storage battery 14 can be temporarily supplemented with a large electric power necessary for driving the actuator or the like. In this case, the storage battery 14 may be connected to the external power supply via the power supply circuit 12 a in the control unit 12. Thereby, the amount of electricity stored in the storage battery 14 can be accurately grasped by, for example, a monitor provided in the controller 11. The replenishment of power by the external power source creates an initial state in which power is stored in the power storage unit 14, and disconnects the storage battery 14 from the external power source when the electric bed 1 is used. Thereby, the use environment of the electric bed 1 can be maintained in a clean state.

  Next, a modification of the cordless power supply apparatus for indoor medical or nursing care facilities according to the first embodiment will be described. As shown in FIGS. 3 (a) and 3 (b), the cordless power supply device for indoor medical or nursing care facilities according to this modification is configured such that the solar panel 15a is centered on the rotating shaft 15f on the single support plate 15e. As shown in FIG. Other configurations are the same as those of the first embodiment.

  In the present modification, the support plate 15e of FIG. 3 is fixed to the protective fence of the electric bed 1. That is, as shown in FIGS. 4 and 5, the support plate 15 e is fixed to the footboard 27 a of the electric bed 1 or the side rail 28 of the electric bed 1. Note that the solar panel 15 a may be fixed to the headboard 27 b of the electric bed 1. As shown in FIG. 5, for example, when the side fence 28 is covered with a cover 28b, the support plate 15e may be fixed to the cover 28b by, for example, adhesion. Thereby, the solar panel 15a is attached to the protection fence (the foot board 27a, the head board 27b and / or the side fence 28) so as to be able to swing, and therefore, the orientation of the solar battery cell portion can be changed. The incident angle of the light to the solar cell portion can be adjusted.

  In addition to the configuration of the first embodiment, the cordless power supply device of the present modification is configured such that the solar panel 15a can adjust its light incident surface. Therefore, at the time of power storage, for example, the intensity of light applied to the solar cell unit can be increased by swinging the solar panel 15a so that sunlight is irradiated vertically to the solar cell unit. Therefore, according to the cordless power supply device of this modification, in addition to the effect of the first embodiment, the power generation by the solar panel 15a can be performed more efficiently.

  In this modification, the direction of the rotating shaft 15f is one direction. However, if two or more rotating shafts are provided and the solar panel 15a is configured to be swingable about the respective rotating shafts, for example, the solar panel 15a. The light irradiation surface can be adjusted in any direction, and the power generation efficiency by the solar panel 15a is further improved.

  In addition, as shown in FIG. 3A, in this modification, the support plate 15e can be configured as a case for storing the solar panel 15a, for example, while the solar panel 15a is not used. If the panel 15a is stored in the case, the solar battery cell portion can be protected.

  Furthermore, in the said modification, although the solar panel 15a is attached to the side fence 28, the headboard 27b, and / or the foot board 27a of the electric bed 1 via the support plate 15e, the solar panel 15a is attached to the side fence. 28, It may be directly attached to the head board 27b and / or the foot board 27a. That is, as shown in FIG. 6, the solar panel 15 a is swingably attached to, for example, the upper end portion of the foot board 27 a. Alternatively, the solar panel 15a is swingably attached to the uppermost pipe of the side fence 28 constituted by, for example, a plurality of pipes. Also in this case, for example, if the light irradiation surface of the solar panel 15a is adjusted so that sunlight is irradiated vertically to the solar battery cell portion, power generation by the solar panel 15a can be performed efficiently.

  Next, another modification of the cordless power supply apparatus for indoor medical or nursing care facilities according to the first embodiment will be described. As shown in FIG. 7, in the electric bed 1 of this modification, a support shaft made of, for example, two pipes is provided on the side of the bed 1, supported by the support shaft, and from the tip end portion of the support shaft. A canopy 29 is provided so as to overhang the bed. The canopy 29 is not limited to the upper part of the bed, but may be provided so as to extend to an area where the bed is not located below. For example, the canopy 29 is provided so as to extend from the upper part of the bed part to the outside in the width direction of the bed further than the support shaft. In the present modification, the solar panel 15 a is fixed on the canopy 29. In this modification, the solar panel 25a can be installed on the entire surface of the canopy 29, and a large power generation area can be ensured by the solar battery cell portion.

  Next, a cordless power supply apparatus for indoor medical or nursing care facilities according to a second embodiment of the present invention will be described. FIG. 8 is a block diagram showing a configuration of a cordless power supply device for indoor medical or nursing care facilities according to the second embodiment of the present invention, and FIG. 9 shows an indoor medical or nursing care facility according to the second embodiment of the present invention. FIG. 10A is a perspective view showing an example in which the cordless power supply device is used for an electric bed, FIG. 10A is a schematic view showing a piezoelectric module used in the electric bed 1 of the present embodiment, and FIG. 10B is this embodiment. It is sectional drawing which shows an example of this piezoelectric material.

  In the first embodiment described above, the solar panel 15a is used as the power supply unit 15. However, in the present embodiment, as shown in FIG. As shown in FIG. 9, the piezoelectric body 15 b is configured as a plurality of piezoelectric modules 150 arranged on the lower surfaces of the back bottom 2, the waist bottom 4, the knee bottom 5, and the foot bottom 7 of the electric bed 1. . Thereby, for example, vibration power generation by the piezoelectric element is performed using the vibration of the electric bed 1 caused by the operation on the bed of the user. About another structure, it is the same as that of 1st Embodiment.

  As shown in FIG. 10A, the piezoelectric module 150 is configured by, for example, a piezoelectric plate 15b arranged in a matrix in, for example, six columns and six columns on a resin plate. A plurality of modules 150 are arranged on the lower surfaces of the back bottom 2, the waist bottom 4, the knee bottom 5, and the foot bottom 7 of the electric bed 1. In FIG. 9, only the piezoelectric module 150 disposed on the lower surface of the back bottom 2 is divided for each piezoelectric module. As shown in FIG. 10B, the piezoelectric body 15b includes a piezoelectric element 16a and two electrodes 16b and 16c. The electrode 16b is provided on the upper surface of the piezoelectric element 16a, and the piezoelectric element 16a. The electrodes 16c are connected in series across the upper and lower surfaces. The electrode 16c is fixed to the resin plate. In the present embodiment, the piezoelectric element 16a is polarized in a direction parallel to the surface thereof.

  The electrode 16b and the electrode 16c are connected to each other by lead wires, for example, by soldering. As shown in FIG. 10A, a plurality of lead wires connected to the electrodes having the same polarity are provided for each piezoelectric module 150. Are connected in parallel, and each of the positive electrode and the negative electrode is combined into one lead wire. A plurality of positive and negative lead wires for each piezoelectric module 150 are collected with the same polarity, and connected to the positive and negative electrodes of the storage battery 14 via the power supply circuit 12a.

  Next, operation | movement of the electric bed provided with the cordless power supply device of this embodiment is demonstrated. In addition, in this embodiment, since it is the same as that of 1st Embodiment except the structure of a power supply part, detailed description is abbreviate | omitted. In the present embodiment, when the user moves on the bed 1, the electric bed 1 vibrates. Vibration is transmitted. Then, the electrodes 16b and 16c vibrate in the vertical direction and the horizontal direction in FIG. That is, the left-right vibration direction is the polarization direction of the piezoelectric element 16a. Thus, for example, when the electrodes relatively move in the direction of arrow V in FIG. 10B, the piezoelectric element 16a is polarized by the piezoelectric effect, and voltages having different polarities are respectively generated between the electrodes 16b and 16c. appear. Therefore, a weak current is generated in each of the lead wires connected to the electrodes 16b and 16c. Although the current generated per piezoelectric body 15b is weak, in the present embodiment, by connecting a plurality of piezoelectric bodies 15b in parallel, the generated current is integrated by the number of piezoelectric bodies 15b, and the electrodes As a product of the voltage generated between 16b and the electrode 16c, the generated power can be stored in the storage battery 14 or supplied to each unit via the power supply circuit 12a.

  On the other hand, when the relative movement direction of the electrodes is opposite to the arrow V in FIG. 10C due to the vibration of the electric bed 1, the voltage generated between the electrodes 16b and 16c. Is the opposite of the case where the positive and negative electrodes are described above. In this case, contrary to the above-described case, power is taken out from the storage battery 14. In order to prevent this, a backflow prevention diode may be connected to the positive and negative lead wires.

  Also in the electric bed 1 of this embodiment, when moving, the electric bed 1 can be moved as it is, that is, without removing the power plug from the outlet, for example, by a wheel provided at the bottom of the bed. it can.

  The electric bed 1 of the present embodiment is provided with a plurality of piezoelectric bodies 15b as the power supply unit 15, thereby converting the vibration energy of the electric bed 1 into electric energy and driving power for units such as the actuator 40. Can be self-generated. And like 1st Embodiment, it is not necessary to supply electric power from external power supplies, such as the outlet 13a, using the power plug 13 and the cord | code like the conventional electric bed 20 shown in FIG. 13 thru | or FIG. Therefore, even when the electric bed 1 is moved, the caregiver or nurse does not need to remove the power plug 13 from the outlet 13a and does not need to contact the power cord, so that the use environment is kept clean. Can do.

  Further, the electric bed 1 is provided with a storage battery 14, and the electric power generated by the piezoelectric body 15 b can be temporarily stored in the storage battery 14, whereby the power generation amount per unit time of the piezoelectric body 15 b is small. Even in such a case, as long as the electric bed 1 vibrates, the generated power can be charged in the storage battery 14, and the electric power generated by the piezoelectric body 15 b is stored in the storage battery 14 to accumulate the amount of power over time. Large electric power can be supplied to each unit as needed. Furthermore, in the present embodiment, the generated vibration can be recovered as electric energy even when the electric bed 1 is raised and lowered, and not only can the environmental load be reduced by private power generation, It can greatly contribute to the effective use of energy.

  In the present embodiment, similarly to the first embodiment, the storage battery 14 is provided with an adapter or a power plug so that the storage battery 14 can be connected to an external power source, or the power circuit 12a in the control unit 12 is provided. The storage battery 14 can be connected to an external power source, and when the power stored in the storage battery 14 is small, the storage battery 14 can be temporarily replenished with a large amount of power necessary for driving an actuator or the like and stored in the storage battery 14. it can. Therefore, even when the power generation amount in the piezoelectric body 15b is small, each unit can be driven using the power stored in the storage battery 14. In the present embodiment, the replenishment of electric power by the external power source also creates an initial state in which electric power is stored in the power storage unit 14, and the connection of the storage battery 14 to the external power source is disconnected when the electric bed 1 is used. Thus, the usage environment of the electric bed 1 is kept clean.

  In the present embodiment, the example in which the piezoelectric body module 150 is configured by arranging a plurality of piezoelectric bodies 15b on the resin plate has been described. However, the piezoelectric body 15b may not be modularized, A plurality of piezoelectric bodies 15 b may be provided on the lower surface of each bottom of the electric bed 1. Furthermore, the installation position of the piezoelectric body 15b is preferably provided at the bottom and the curved portion, which are positions close to the user's activity position, in order to efficiently generate power using the vibration caused by the user's activity. The installation position is not particularly limited as long as a voltage due to the piezoelectric effect is generated between the electrode 16b and the electrode 16c of the piezoelectric body 15b by the vibration of the electric bed 1.

  Furthermore, in the present embodiment, the example in which the piezoelectric element 16a uses the piezoelectric body 15b having the polarization direction in the direction parallel to the surface has been described. However, the piezoelectric element 16a has the polarization direction in the direction perpendicular to the surface. You may have. In this case, if the electrodes 16b and 16c are installed on the surface of the piezoelectric element 16a, voltages having different polarities between the electrode 16b and the electrode 16c due to the piezoelectric effect caused by vibration in the thickness direction of the piezoelectric element 16a. To generate electricity.

  Next, a cordless power supply apparatus for indoor medical or nursing care facilities according to a third embodiment of the present invention will be described. FIG. 11 is a block diagram showing a configuration of a cordless power supply device for indoor medical or nursing care facilities according to the third embodiment of the present invention. As shown in FIG. 11, in the present embodiment, the electric bed 1 has a coil 15 c as the power supply unit 15, and the power supply side primary coil from the power plug 13 inserted into the outlet 13 a via the power cord. An induced electromotive force is generated on the coil 15c side by the current supplied to 15d, and electromagnetic power feeding is performed from the power feeding side coil 15d to the power receiving side coil 15c. Then, the power supplied to the power receiving coil 15 c is stored in the storage battery 14. In addition, the power supplied to the power receiving coil 15c can be supplied to each unit via the power supply circuit 12a. That is, in this embodiment, the power supply unit 15 is the secondary coil 15c on the power receiving side, and the power supplied to the electric bed 1 is generated by magnetically coupling the power feeding side coil 15d and the power receiving side coil 15c. The power receiving unit 15c is configured to receive power, and the power supply unit 15 does not have a function as a private power generator. About another structure, it is the same as that of 1st and 2nd embodiment.

  Next, operation | movement of the electric bed provided with the cordless power supply device of this embodiment is demonstrated. Also in the present embodiment, since the configuration other than the configuration of the power supply unit is the same as that of the first embodiment, detailed description thereof is omitted. In the present embodiment, when a current is supplied from the power plug 13 inserted into the outlet 13a to the primary coil 15d on the power supply side via the power cord, a magnetic flux is generated in the coil axis direction of the primary coil 15d on the power supply side. . As shown in FIG. 11, the current flowing through the primary coil 15d is an alternating current, and the magnetic flux in the coil axis direction of the coil 15d changes with time. Then, an induced electromotive force is generated in the secondary power receiving coil 15c so as to generate a magnetic flux in a direction against the change in the magnetic flux of the primary coil. That is, an alternating current whose phase is ¼ cycle later than that of the primary power supply coil 15d flows through the secondary power reception coil 15c. Thereby, electromagnetic power feeding is performed from the power feeding side coil 15d to the power receiving side coil 15c. The power received by the power receiving coil 15d can be stored in the storage battery 14 or supplied to each unit via the power supply circuit 12a.

  In the present embodiment, the power cord connected to the external power source is not directly connected to the power circuit 12a to supply the drive power of each unit, but the primary side on the power feeding side is provided between the power cord and the power circuit 12a. A coil 15d and a power receiving side secondary coil 15c are provided, and thereby the power feeding side coil 15d and the power receiving side coil 15c are magnetically coupled. Thus, as in the first and second embodiments, when the electric bed 1 is moved, the electric bed 1 is provided as it is, that is, without removing the power plug from the outlet, for example, at the bottom of the bed. The wheel can be moved by the wheel. In addition, since the feeding coil 15d and the receiving coil 15c are not in contact with each other, it is not necessary for the caregiver or nurse to remove the power plug 13 from the outlet 13a when the electric bed 1 is moved. The use environment can be kept clean.

  Further, since the storage battery 14 is provided, even when the power received by the power receiving coil 15c is small, the amount of power is accumulated over time by accumulating the power, and if necessary, the large amount of power is supplied to the actuator 41 and the like. Can be supplied to each unit. Furthermore, even when the magnetic coupling between the power feeding side coil 15d and the power receiving side coil 15c is turned off due to the movement of the electric bed 1, the power stored in the storage battery 14 can be supplied as necessary. .

  Also in this embodiment, the storage battery 14 is provided with an adapter or a power plug so that the storage battery 14 can be connected to an external power supply, or the storage battery 14 is connected to an external power supply via the power supply circuit 12a in the control unit 12. When the power is stored in the storage battery 14 with a small amount of power that can be connected, large power necessary for driving the actuator or the like can be temporarily supplemented. Then, when the electric bed 1 is used, the storage battery 14 is disconnected from the external power source to maintain the usage environment of the electric bed 1 in a clean state.

  In the above first to third embodiments, the case where the cordless power supply device is installed in the electric bed has been described. However, in the present invention, the cordless power supply device is not limited to the electric bed, and the electric motor shown in FIGS. It may be installed on a chair. For example, as shown in FIG. 12, the solar panel 15 a can be installed on the armrest 17 b of the electric chair 17. Also in this case, for example, the solar panel 15a can be swingably attached to the armrest 17b. Even when the cordless power supply device is installed in the electric chair, the drive power of each unit such as an actuator is temporarily stored in the storage battery without using the power plug and the power cord, and / or the power from the power supply unit 15 is used. Can be supplied to each unit. And even when the user needs to move the entire electric chair while on the electric chair, it is not necessary to unplug the power plug from the outlet, and the power cord does not touch the floor surface. The use environment of the chair can be kept clean. When the solar panel 15a is swingably attached to the armrest 17b as a power generation device, the orientation of the solar cell unit can be changed, the incident angle of light to the solar cell unit can be adjusted, and power generation Can be performed efficiently.

  As described above, when the cordless power supply device for indoor medical or nursing care facilities according to the present invention is used for indoor medical or nursing care facilities where the use environment needs to be kept clean, the power plug and the power cord are Contact with unhygienic places such as the floor surface prevents the use of indoor medical or nursing care facilities from becoming unsanitary, and the power plug is removed from the outlet when moving equipment such as electric beds. Since it is not necessary, the usage environment can be kept clean.

1: electric bed, 2: back bottom, 3: back curved part, 4: waist bottom, 5: knee bottom, 6: knee curved part, 7: foot bottom, 11: controller, 12: control box, 12a: power circuit 12b: control circuit, 13: power plug, 13a: outlet, 14: storage battery, 15: power supply unit, 15a: solar panel, 15b: piezoelectric body, 150: piezoelectric body module, 15c: power receiving side (secondary) coil 15d: Feeding side (primary) coil, 15e: Support plate, 15f: Rotating shaft, 16a: Piezoelectric element, 16b, 16c: Electrode, 17: Electric chair, 17a: Base, 17b: Armrest, 17c: Backrest , 17d: seat, 17e: footrest, 20: electric bed, 22a, 22b, 23, 26a, 26b: link, 22c, 22d, 25c, 25d, 26c, 26f Rotation fulcrum, 24: Back bottom support plate, 25a, 25b: Stay, 26e: Roller, 27a: Footboard, 27b: Headboard, 28: Side fence, 28a: Cover, 29: Canopy, 40: Actuator, 41: Weight Total, 42: Lighting, 43: Motor

Claims (9)

A power supply unit for generating power supplied to indoor medical or nursing care equipment, a control circuit for controlling the supply of power to the facility, a power storage unit for storing the power generated by the power supply unit, and A power supply circuit that supplies power stored in the power storage unit and / or power generated by the power supply unit to the facility by a signal from a control circuit,
The power supply unit can supply power to the facility without being connected to an external power supply. The cordless power supply apparatus for indoor medical or care facilities according to claim 1, wherein the power supply unit is a solar panel that converts light energy into electrical energy. The cordless power supply device for indoor medical or care facilities according to claim 1, wherein the power supply unit includes a piezoelectric element that converts vibration energy into electric energy. A power receiving side coil capable of receiving power supplied to an indoor medical or nursing care facility by magnetically coupling with a power feeding side coil connected to an external power source, and magnetic coupling between the power feeding side coil and the power receiving side coil A power supply unit that can turn on and off, a control circuit that controls the supply of power to the facility, a power storage unit that stores the power received by the power supply unit, and a signal from the control circuit, A cordless power supply device for indoor medical or nursing care equipment, comprising: a power supply circuit that supplies power stored in the power storage unit and / or power from the power supply unit to the facility. The indoor medical or nursing care facility is an electric bed that performs an operation of raising and lowering a back by driving an actuator with electric power from the power storage unit. Cordless power supply for indoor medical or nursing care facilities. The power supply unit is a solar panel that converts light energy into electrical energy, and the solar panel is attached to a side fence, a headboard, and / or a footboard of the electric bed so that its light incident surface can be adjusted. The cordless power supply device for indoor medical or nursing care facilities according to claim 5. The room according to claim 5, wherein the power supply unit is a solar panel that converts light energy into electric energy, the electric bed has a canopy, and the solar panel is attached to the canopy. Cordless power supply for medical or nursing care facilities. The medical or nursing care facility in the room is an electric chair that performs an operation of raising and lowering a back by driving an actuator with electric power from the power storage unit. Cordless power supply for indoor medical or nursing care facilities. 9. The power storage unit according to claim 1, wherein the power storage unit can be connected to an external power source, and power supplied from the external power source can also be stored as power supplied to the facility. Cordless power supply for indoor medical or nursing care facilities.

Images