JP2001104409A - Nursing lift and its control method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a nursing lift in which ease of use is improved to properly cope with an anomaly of the driving state, or the like, of a lifting drive mechanism, and a method fro control thereof. SOLUTION: This nursing lift is provided with a lifting drive mechanism for lifting up/down a supporting section for hanging a person who needs to be nursed and moving up/down by electrical power. The lift is also provided with an anomaly detection means for detecting the presence/absence of the occurrence of anomaly of a driving operation or a driving state and outputting an anomaly detection signal when an operation switch 43 for operating to move up/down the supporting section is operated to be inputted, and an anomaly information means for inputting the anomaly detection signal outputted from the anomaly detection means and informing the anomaly as sound or light. When the anomaly detection signal is outputted, the lifting drive mechanism is made to be a stoppage state and the input operation by the operation switch 43 is invalidated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a care lift provided with a vertical drive mechanism for vertically moving a support portion for suspending and supporting a person requiring care by moving the support vertically.

[0002]

2. Description of the Related Art Conventionally, for example, as shown in FIG.
The nursing care lift main body 4 is horizontally movably mounted on a portal frame composed of a pair of supports 2, 2 and a rail 3 provided between the upper ends of the supports 2, 2, and stands or sits on the care lift main body B by itself. There is known a care lift A which is provided with a hanger 6, a sling 7, and the like, which are support portions for supporting a person requiring care who cannot perform such a hanging movement, and which lifts the person requiring care through the sling 7.

The nursing care lift body B is provided with an up-down drive mechanism for moving the sling 7 up and down electrically.
The up-down drive mechanism is provided with a drive motor or a take-up roller for winding up and down a belt 8 to move the hanger 6 up and down by the drive motor, and a controller 5 for controlling the operation thereof is attached. Have been. In many cases, in the control device, the drive motor is stopped when, for example, a part of the body of the person requiring care is caught on a bed or the like and movement of the hanger is hindered.

Accordingly, the care lift A, for example, allows a caregiver to support a care-requiring person with both hands, holds the controller 5 in one hand, and operates an operation switch provided on the controller 5 to operate the care lift. Body B
Can be appropriately raised or lowered by driving the drive motor without applying an abnormal load.

[0005]

However, in the above prior art, the control device detects the magnitude of the current supplied to the drive motor and stops the supply of current to the drive motor when the current is larger than a predetermined current value. I was trying to do it. Therefore, when the caregiver operates the operation switch again, the drive motor can be driven. Therefore, for example, when the elevating belt 8 is entangled inside the vertical drive mechanism, the drive motor is further driven, and an abnormal load current is supplied to the drive motor, and the drive motor and the motor drive circuit are driven. Was concerned that it could lead to a breakdown. In addition, in the caregiver, the state in which the drive motor is not energized is regarded as a failure of the nursing care lift main body, and an appropriate countermeasure is not taken and improvement is also demanded.

The present invention has been made in view of the above circumstances, and has as its object to provide a nursing care lift and a nursing care lift capable of improving usability so as to appropriately cope with abnormalities such as a driving state of a vertical driving mechanism. An object of the present invention is to provide a control method.

[0007]

In order to achieve the above-mentioned object, a nursing care lift according to the present invention is provided with an up-down drive mechanism for electrically vertically moving a supporting portion for suspending and supporting a person requiring care. A nursing care lift, and outputs an abnormality detection signal by detecting the presence or absence of an abnormality in a driving operation or a driving state of the up-down driving mechanism when an operation input is provided from an operation switch for vertically operating the support unit. Abnormality detection means, and abnormality notification means for receiving an abnormality detection signal output from the abnormality detection means and notifying the abnormality with sound, light, or the like, and providing the abnormality detection means when the abnormality detection signal is output. It is characterized in that the drive mechanism is stopped and the operation input by the operation switch is invalidated.

In this configuration, the abnormality detecting means detects the presence or absence of an abnormality in the driving operation of the vertical driving mechanism or the driving state when there is an operation input from the operation switch for vertically moving the supporting portion. An abnormality detection signal is output, and the abnormality notification means receives the abnormality detection signal output from the abnormality detection means, notifies the abnormality by sound, light, etc., stops the vertical drive mechanism, and operates the apparatus. The operation input by the switch is invalidated.

[0009] Preferably, the abnormality notification means has a return switch for releasing the abnormality notification state and returning to a normal state in which the operation input by the operation switch is valid. In this case, the abnormality notification state is canceled by the return switch provided in the abnormality notification means, and the state can be returned to the normal state in which the operation input by the operation switch becomes valid.

The abnormality detecting means includes a current detecting section for detecting a current supplied to an electric drive section provided in the vertical drive mechanism, and a current comparing section for comparing a current value detected by the current detecting section with a predetermined current value. Means, when the detected current value is equal to or greater than a predetermined value, the current comparing means has a time comparing means for calculating its duration and comparing it with a predetermined time value, and the duration is greater than the predetermined time value It is preferable to output an abnormality detection signal at times. In this case, a current detection unit provided in the abnormality detection unit detects a current supplied to the electric drive unit provided in the vertical drive mechanism, and a current comparison unit detects a current value detected by the current detection unit. Is compared with a predetermined current value, and further, the time comparing means calculates a duration in which the detected current value in the current comparing means is equal to or more than a predetermined value, and compares the calculated time with a predetermined time value. An abnormality detection signal is output when the time is greater than the predetermined time value.

The abnormality detecting means includes a temperature detecting section for detecting a temperature of an electric driving section provided in the vertical driving mechanism, and a temperature comparing section for comparing a temperature detecting output from the temperature detecting section with a predetermined temperature value. It is preferable to have means for outputting an abnormality detection signal when the detected temperature is higher than a predetermined temperature value. In this case, the temperature detection unit that detects and outputs the temperature of the electric drive unit provided in the vertical drive mechanism by the temperature detection unit by the temperature comparison unit provided in the abnormality detection unit has a predetermined temperature value. In comparison, an abnormality detection signal is output when the detected temperature is higher than a predetermined temperature value.

Further, the abnormality detecting means has an input number comparing means for calculating the number of inputs of the operation input within a predetermined time and comparing the calculated number with the predetermined number, and the number of inputs is larger than the predetermined number. It is preferable to output an abnormality detection signal at times. In this case, the number of inputs within a predetermined time of the operation input from the operation switch is calculated by the number-of-inputs comparison means provided in the abnormality detection means, compared with a predetermined number of times, and the number of times of input is determined by a predetermined number An abnormality detection signal is output when the value is larger than the number of times.

[0013] The method of controlling a care lift according to the present invention is a method for controlling a care lift provided with an up-down drive mechanism for vertically moving a support portion for suspending and supporting a person requiring care. Detecting the presence or absence of an abnormality in the drive operation or drive state of the vertical drive mechanism when there is an operation input from an operation switch for vertically moving the support unit,
When there is an abnormality, it is preferable that an abnormality is notified by sound, light, or the like, the vertical operation of the vertical driving mechanism is stopped, and the operation input by the operation switch is invalidated.

Further, when there is an operation input from an operation switch for vertically moving the support portion, it is detected whether or not the drive operation of the up-down drive mechanism or the drive state is abnormal. An abnormality notification mode is provided in which an abnormality is notified by light or the like and the vertical operation of the vertical drive mechanism is stopped, and the operation input by the operation switch is invalidated. During this abnormality notification mode operation, the operation input by the operation switch is performed. It is also preferable to release the state when there is an operation input to the return switch for returning to the valid normal state.

[0015]

1 to 5 show a first embodiment corresponding to all of claims 1 to 3 and 6 and 7 of the present invention. FIGS. 6 and 7 show claims of the present invention. The second corresponding to item 4
7 and 8 show a third embodiment corresponding to claim 5 of the present invention.

[First Embodiment] FIG. 1 is a block diagram showing a schematic configuration of a care lift body of a care lift according to a first embodiment. FIG. 2 is a perspective view showing an appearance of the care lift. FIG. 3 is an explanatory diagram showing a use state of the care lift. 4A and 4B show a care lift main body of the care lift, wherein FIG. 4A is a side view, and FIG. 4B is a plan view seen from a lower surface side. FIG. 5 is a flowchart showing a control method of the care lift.

The nursing care lift 1 according to this embodiment is a nursing care lift provided with an up-down drive mechanism for vertically moving a support unit for suspending and supporting a person requiring care, and operating the support unit up and down. Abnormality detection means for detecting the presence or absence of an abnormality in the driving operation or the driving state of the vertical drive mechanism when an operation input from the operation switch 43 is performed, and outputting an abnormality detection signal; and output from the abnormality detection means. Abnormality detecting means for inputting an abnormality detection signal, and informing an abnormality by sound, light, or the like. When the abnormality detection signal is output, the vertical drive mechanism is stopped, and the operation switch 43 is used. The operation input is invalidated.

In the nursing care lift according to the present embodiment, the abnormality notification means includes a return switch 46 for releasing the abnormality notification state and returning to the normal state in which the operation input by the operation switch 43 is valid. I also have. In the nursing care lift according to the present embodiment, the abnormality detecting means detects a current flowing through an electric drive unit provided in the up-down drive mechanism, and detects a current value detected by the current detection unit 44. A current comparing means for comparing with a predetermined current value; and a time comparing means for calculating a duration of the detected current value when the detected current value is equal to or more than a predetermined value and comparing the calculated time with a predetermined time value. An abnormality detection signal is output when the time is greater than the predetermined time value.

More specifically, the nursing care lift 1 is provided with a nursing care lift main body 4 on a gate-shaped frame comprising a pair of columns 2, 2 and a rail 3 provided between upper ends of the columns 2, 2, as shown in FIG. Is mounted so that it can be moved horizontally,
In addition, as shown in FIG. 3, the person requiring care is suspended and supported via the hanger 6 and the sling 7 serving as the above-mentioned supporting portions, and is operated to move up and down.
Is connected to a controller 5 for operating itself via a cord as shown in the figure.

The columns 2 and 2 are made of an iron pipe or the like.
The lower end is joined to a base 21 orthogonal to the column 2, and the upper end is joined to the rail 3. The rail 3 is an extruded material made of an aluminum material, and has a slit formed on the lower surface thereof as a track on which the care lift main body 4 moves horizontally in the longitudinal direction.

As shown in FIG. 4 (a), the care lift main body 4 has its upper part inserted into the slit of the rail 3 and is suspended on the rail 3 via rollers so as to be horizontally movable. The nursing care lift main body 4 includes a drive motor 48 inside the box-shaped case, and a vertical drive mechanism that drives the drive motor 48 to raise and lower the hanger 6 suspended downward through the lifting belt 8. . As shown in FIG. 4B, a green LED element serving as a power supply display, a red LED element forming an abnormality display section 45 described later, and a return switch 46 are formed on the lower surface of the care lift main body 4. A switch operation unit to be operated, a code outlet of the controller 5 provided with an operation switch 43 described later, and the like are provided. The elevating belt 8 and the hanger 6 are connected by an oval ring.

The vertical drive mechanism is driven and controlled by a control device as shown in FIG. More specifically, this control device mainly includes a control unit 41 formed of a microcomputer provided with a timer therein, and includes a read / write controller.
Only memory (ROM), random access
A storage unit 42 formed of a memory (RAM), an operation switch 43, a current detection unit 44 forming an abnormality detection unit,
An abnormality display unit 45 and a return switch 46 forming an abnormality notification unit, and a motor drive circuit 47 for driving the drive motor 48 as an electric drive unit are provided.
It is connected to the.

In this case, a software program based on a flowchart shown in FIG. 5, which will be described later, is used to operate the drive motor 48 by the operation switch 43 provided in the controller 5 in the storage unit 42. Is written. In this software program, software processing of the abnormality detecting means, the current comparing means and the time comparing means is written as a program, and the detected current value by the current detecting section 44 when the abnormality is displayed on the abnormality display section 45 described later. The predetermined current value (Im) to be compared with the predetermined current value (Im) and the predetermined time value (tm) to be compared with the continuation time when the detected current value is equal to or greater than (Im) are also written in advance together with the software processing program.

The operation switch 43 is used to drive a drive motor 48 for raising and lowering the hanger 6 suspended below the lifting belt 8 by a vertical drive mechanism.
It is formed by a switch having a three-pole structure that allows the operation of raising and lowering with one switch. Then, by continuing to push the operation unit toward one of the ascending and descending sides, the rotation of the drive motor 48 can be rotated forward or backward.

The current detecting section 44 forms an abnormality detecting means for outputting an abnormality detection signal by detecting the presence or absence of an abnormality in the driving operation or the driving state of the vertical driving mechanism. In this case, the driving motor 48 is driven. The motor drive circuit 47 detects a change in the value of the current supplied to the drive motor 48. That is, the current detection unit 44
8 is formed of a resistor that converts a change in the value of the supplied current to the voltage 8 and detects a change in the voltage value. Then, the current detection unit 44 includes: As shown in FIG. 1, an A / D converter is provided. The A / D converter converts the analog value of the voltage value into a digital value having a predetermined resolution through the A / D converter and outputs the digital value. It has become.

The abnormality display section 45 is equivalent to abnormality notification means for inputting abnormality notification data output from the control section 41 as an abnormality detection signal and displaying it by light, and is shown in FIG.
It is formed of red LED elements arranged as shown in FIG. In addition, it is also preferable to provide a buzzer or the like and display the abnormal display unit 45 with a sound or the like in addition to the one that displays with light. In this case, a return switch 46 for canceling the abnormality notification state by the LED element or the like is provided as abnormality notification means. The return switch 46 is also called a reset switch. In this case, the return switch 46 is formed by a rebound type single-pole switch.

The motor drive circuit 47 and the drive motor 48
This forms an electric drive unit. The motor drive circuit 47 is formed by a motor drive IC or the like,
A drive signal for rotating the drive motor 48 forward or reverse is input from the drive motor 4 and the drive motor 4 formed by a DC motor or the like.
8 and the direction of the energizing current are controlled. That is, in the electric drive unit, the drive motor 48 is driven by the control device described above, and the hanger 6 suspended downward through the lifting belt 8 of the vertical drive mechanism can be raised and lowered.

The above-mentioned nursing care lift 1 is a method of controlling a nursing care lift, which is provided with an up-and-down drive mechanism for vertically moving a support portion for suspending and supporting a person who needs nursing care. When there is an operation input from the operation switch 43 for vertically moving the support unit, the presence or absence of an abnormality in the driving operation or the driving state of the vertical driving mechanism is detected, and when there is an abnormality, a sound, light, or the like is used. Notifying the abnormality and stopping the vertical operation of the vertical drive mechanism,
And an abnormality notification mode in which the operation input by the operation switch is invalidated, and in the abnormality notification mode, the same state when there is an operation input to a return switch for returning to a normal state in which the operation input by the operation switch is valid. Is controlled on the basis of a software processing program formed to cancel the operation.

Specifically, when there is an operation input from the operation switch 43, the current flowing through the motor drive circuit 47 provided in the vertical drive mechanism is detected by a voltage change across the resistor of the current detector 44. I do. Then, the current is converted into a digital value corresponding to the analog value of the supplied current by the A / D converter, and is input to the controller 41.

The control section 41 first compares a current value (I) detected by the current detecting section 44 with a predetermined current value (Im) by current comparing means formed by a software program described later. You. At this time, a state in which an abnormal load current is applied to the drive motor 48 due to a problem such as the lifting belt 8 being entangled inside the vertical drive mechanism, that is, the detected current value (I) is a predetermined current value If (Im) is greater than (Im), the time comparing means formed by the software program further sets a duration (t) during which the detected current value in the current comparing means becomes equal to or more than a predetermined value to the control unit 41. It is calculated based on a built-in timer built in the. Thereafter, the abnormality detection signal is compared with a predetermined time value (tm). As a result, when the duration time (t) is longer than the predetermined time value, an abnormality detection signal is output to the abnormality display section 45, and the abnormality display section 45 is output. In this case, the LED element is illuminated in red and an abnormality is notified by light.

At this time, the drive motor 48 of the vertical drive mechanism is stopped at the same time, and the operation switches 43
Shifts to the abnormality notification mode in which the operation input by the user is invalidated so as not to be accepted. That is, during this period of the abnormality notification mode, the control unit 41 performs a repetitive operation of confirming the input from the return switch 46 provided in the abnormality notification unit, so that the subsequent operation input by the operation switch 43 may be accepted. There is no. When an input is made from the return switch 46, the state of the abnormality notification mode is released, and the operation returns to the normal state in which the operation input by the operation switch 43 is valid.

Next, an embodiment of a method for controlling a care lift will be described with reference to a flowchart shown in FIG.
First, when a power switch (not shown) of the nursing care lift is turned on, the control unit 41 performs a repetitive operation of confirming an operation input to the operation switch 43, but performs an operation of raising or lowering the operation switch 43. When there is an input (S1), the drive motor 48 is driven based on the operation instruction (S2). At this time, the current detection unit 44 detects the current supplied to the motor drive circuit 47, and the detected current value (I) is compared with a predetermined current value (Im) previously written in the storage unit 42 ( S3). This step S3 serves as a current comparison unit.

In the comparison result, the detected current value (I)
Is not larger than the predetermined current value (Im), the drive motor 48 is driven as it is (S4), and is driven until it reaches the limit position of ascending or descending, and the signal from the limit switch (not shown) Then, the operation is stopped (S5). Further, the detected current value (I) is a predetermined current value (I
m), the duration (t) is calculated based on a built-in timer of the control unit, and thereafter, the storage unit 42
Is compared with a predetermined time value (tm) written in advance (S6). This step of S6 serves as time comparison means.

That is, when the detected current value (I) is larger than the predetermined current value (Im), the steps S2 to S4 are repeated until the duration (t) becomes larger than the predetermined time value (tm). Will be repeated. When it is determined that the continuation time (t) is longer than the predetermined time value (tm), the drive motor 48 is stopped (S7), and an abnormality detection signal is output, and the red L of the abnormality display section 45 is output.
The ED element is turned on (S8). Then, the input from the return switch 46 is confirmed (S9). If there is no input, the process proceeds to S8, and the abnormality notification mode in which the operation input by the operation switch 43 becomes invalid is set. Further, when there is an input from the return switch 46, the output of the abnormality detection signal is stopped and the red LED element of the abnormality display section 45 is turned off (S1).
0) Then, the state shifts to the normal state in which the operation input by the operation switch 43 is valid, that is, the state when the operation input to the operation switch 43 is confirmed, which is the state when the power is turned on.

Therefore, according to the nursing care lift 1 described above, when the abnormality detecting means receives an operation input from the operation switch 43 for vertically moving the supporting portion, the abnormality of the driving state of the vertical drive mechanism occurs. The presence / absence is detected, an abnormality detection signal is output, and the abnormality notification means outputs the abnormality detection signal output from the abnormality detection means, and the abnormality is notified by sound, light, etc., and the vertical drive mechanism is stopped. In addition, since the operation input by the operation switch 43 is invalidated, the drive motor 48 does not operate when the operation switch 43 is operated again by the caregiver, and the abnormality occurrence state is easily known. For example, by appropriately coping with the cause of the abnormality, it is possible to appropriately cope with the abnormality such as the driving state of the vertical drive mechanism.

Then, the abnormality notification state is released by the return switch 46 provided in the abnormality notification means, and the state can be returned to the normal state in which the operation input by the operation switch 43 becomes effective. It is easy to return to after recovering from abnormalities such as conditions, and is convenient. Also,
The current detection unit 44 provided in the abnormality detection unit detects the energization current of the electric drive unit provided in the vertical drive mechanism, and the current comparison unit detects the current value detected by the current detection unit 44 ( I) is compared with a predetermined current value (Im),
Further, the time comparing means calculates a continuation time (t) in which the detected current value (I) in the current comparing means is equal to or more than a predetermined value, and compares the calculated time with a predetermined time value (tm). Since the abnormality detection signal is output when the time (t) is longer than the predetermined time value (tm), abnormality detection can be performed without providing a special detection element, and furthermore, only with the circuit configuration in the control device. It is formed.

The present invention provides, in addition to the above-described method, a method for controlling a care lift provided with a vertical drive mechanism for vertically moving a support portion for suspending and supporting a care-requiring person. When there is an operation input from the operation switch 43 for vertically moving the support unit, it is detected whether or not the driving operation of the vertical driving mechanism or the abnormality of the driving state has occurred,
When the abnormality is present, the abnormality is notified by sound, light, or the like, and the vertical operation of the vertical drive mechanism is stopped, and the operation input by the operation switch is only invalidated. Various implementations, such as those without a microcomputer, those with a logic circuit configuration other than the configuration of the microcomputer, those with the built-in timer formed separately from the microcomputer, and those with steps other than the procedures in the above flowchart, etc. Needless to say, it includes those of the form.

[Second Embodiment] FIG. 6 is a block diagram showing a schematic configuration of a care lift main body of a care lift according to a second embodiment. FIG. 7 is a flowchart showing a control method of the care lift.

The care lift 1 of this embodiment differs from the first embodiment only in the configuration of the abnormality detecting means.
The rest of the configuration is the same as that of the first embodiment. In the nursing lift of this embodiment, the abnormality detection means is a temperature detection unit for detecting a temperature of an electric drive unit provided in the vertical drive mechanism. 49, a temperature comparison means for comparing the temperature detection output from the temperature detection section 49 with a predetermined temperature value, and outputs an abnormality detection signal when the detected temperature is higher than the predetermined temperature value.

The temperature detecting section 49 is formed of a temperature-sensitive element such as a thermistor capable of detecting a temperature.
As shown in (1), it is provided at an appropriate position such as a member surface of a motor drive circuit 47 and a drive motor 48 which become an electric drive unit.
The temperature detecting section 49 replaces a temperature change on the surface of the motor drive circuit 47 and the drive motor 48 with a change in resistance value, and converts the change in resistance value into a change in voltage value on an electronic circuit to detect the change. . The temperature detector 49 is provided with an A / D converter as shown in FIG.
The analog value of the voltage value is converted into a digital value having a predetermined resolution via the A / D converter and output.

The control unit 41 is provided in the vertical drive mechanism by the temperature detection unit 49 by the temperature comparison unit provided in the abnormality detection unit based on the procedure shown in the flow chart as shown in FIG. The temperature detection output from which the temperatures of the motor drive circuit 47 and the drive motor 48, which are the electric drive units, are detected and output is compared with a predetermined temperature value (Tm), and the detected temperature (T) is converted to a predetermined temperature value. An abnormality detection signal is output when it is larger than (Tm).

Next, this method of controlling the care lift is described in FIG.
This will be described based on the flowchart shown in FIG. First, when a power switch (not shown) of the nursing care lift is turned on, the control unit 41 performs a repetitive operation of confirming an operation input to the operation switch 43, but performs an operation of raising or lowering the operation switch 43. When there is an input (S11), the drive motor 48 is driven based on the operation instruction (S1).
2). At this time, the motor drive circuit 47 is
Then, the temperature of the drive motor 48 is detected, and the detected temperature (T) is compared with a predetermined temperature value (Tm) previously written in the storage unit 42 (S13). This step 1
3 is a temperature comparison means.

In this comparison result, when the detected temperature (T) is not higher than the predetermined temperature value (Tm), the drive motor 48 is driven as it is, and although not shown, a rising or falling limit position is determined. Driven until
It stops based on a signal from a limit switch (not shown). Further, the detected temperature (T) is a predetermined temperature value (Tm).
When it is determined that the value is larger than the threshold value, the drive motor 48 is stopped (S14), and an abnormality detection signal is output to turn on the red LED element of the abnormality display section 45 (S15).
Then, the input from the return switch 46 is confirmed (S1
6), when there is no input, the process shifts to S15, and the abnormality notification mode in which the operation input by the operation switch 43 becomes invalid is set. When an input is received from the return switch 46, the motor drive circuit 47 and the drive motor 48
Is detected, and the detected temperature (T) is stored in the storage unit 42.
Is compared with a predetermined temperature value (Tm) written in advance (S17). At this time, when it is determined that the detected temperature (T) is higher than the predetermined temperature value (Tm), the process returns to S15 to stop the drive motor 48 again (S1).
4) Further, an abnormality detection signal is output and the abnormality display section 45
Of the red LED element is continued (S15). At this time, when the detected temperature (T) is not higher than the predetermined temperature value (Tm), the process shifts to S11 to check the normal state in which the operation input by the operation switch 43 is valid, that is, to confirm the operation input to the operation switch 43. It shifts to a state where it does.

Therefore, according to the care lift 1 described above, the temperature comparing means provided in the abnormality detecting means
The temperature detection unit 49 detects the temperature of the electric drive unit provided in the vertical drive mechanism and outputs a temperature detection output which is compared with a predetermined temperature value (Tm).
Is higher than a predetermined temperature value (Tm), an abnormality detection signal is output. Therefore, it is possible to appropriately deal with the occurrence of an abnormality in the vertical drive mechanism with a simple processing step by providing a temperature sensitive element, and to reduce costs. Excellent.

According to the present invention, there is provided a method for controlling a nursing lift including a vertical drive mechanism for vertically moving a supporting portion for suspending and supporting a person requiring care, in addition to the above-described method. When there is an operation input from the operation switch 43 for vertically moving the support unit, it is detected whether or not the driving operation of the vertical driving mechanism or the abnormality of the driving state has occurred,
When the abnormality is present, the abnormality is notified by sound, light, etc., and the vertical operation of the vertical drive mechanism is stopped, and the operation input by the operation switch is only invalidated. The automatic return includes a case where the return switch 46 is not provided.

[Third Embodiment] FIG. 8 is a block diagram showing a schematic configuration of a care lift main body of a care lift according to a third embodiment. FIG. 9 is a flowchart showing a control method of the care lift.

The care lift of this embodiment is also different from the first embodiment only in the structure of the abnormality detecting means, and the other structures are the same as those of the first embodiment. In the nursing care lift, the abnormality detecting means includes an input number comparison means for calculating the number of inputs of the operation input within a predetermined time and comparing the number of inputs with a predetermined number of times, wherein the number of times of input is larger than a predetermined number of times Sometimes an abnormality detection signal is output.

As shown in FIG. 8, the abnormality detecting means detects the occurrence of an abnormality in the driving operation of the vertical drive mechanism when there is an operation input from the operation switch 43, and outputs an abnormality detection signal. This is the number-of-inputs comparing means formed by the software program written in the storage unit 42 to output. That is, the control section 41 of this apparatus inputs the operation input from the operation switch 43 within a predetermined time by the input number comparing means provided in the abnormality detecting means based on the procedure shown in the flowchart as shown in FIG. The number of times (N) is calculated and compared with a predetermined number of times (Nm). When the number of inputs (N) is larger than the predetermined number of times (Nm), an abnormality detection signal is output.

Next, the control method of this care lift is described in FIG.
This will be specifically described based on the flowchart shown in FIG. First, when the power switch (not shown) of the care lift is turned on, the control unit 41 resets a counter for counting the number of operation inputs to the operation switch 43 (S21). Next, a repetitive operation for confirming the operation input to the operation switch 43 is performed. When there is an operation input for raising or lowering the operation switch 43 (S22), the drive motor 48 is operated based on the operation instruction. Is driven (S23).
At this time, the number of inputs (N) of the operation input from the operation switch 43 within a predetermined time is calculated (counted) and compared with a predetermined number of times (Nm) (S24). This step 24 is input number comparison means.

In this comparison result, when the number of inputs (N) is not larger than the predetermined number of times (Nm), the drive motor 48 is driven as it is, and although not shown, the ascending or descending limit position is determined. Driven until
It stops based on a signal from a limit switch (not shown). Also, the number of inputs (N) is a predetermined number of times (Nm)
When it is determined that the value is larger than the predetermined value, the drive motor 48 is stopped (S25), and an abnormality detection signal is output to turn on the red LED element of the abnormality display section 45 (S26).
Then, the input from the return switch 46 is confirmed (S2
7), when there is no input, the process goes to S26 repeatedly, and the abnormality notification mode in which the operation input by the operation switch 43 becomes invalid is set. When an input is made from the return switch 46, the output of the abnormality detection signal is stopped and the red
The D element is turned off (S28). Thereafter, the state shifts to the normal state where the operation input by the operation switch 43 is valid, that is, the state where the operation input to the operation switch 43 is confirmed, which is the state when the power is turned on. It is.

Therefore, according to the nursing care lift 1 described above, the number of inputs of the operation input from the operation switch 43 within the predetermined time is calculated by the input number comparison means provided in the abnormality detection means, and the predetermined number of times is obtained. Since the abnormality detection signal is output when the number of inputs is greater than the predetermined number of times compared with the numerical value, it is possible to accurately cope with the occurrence of an abnormality in the vertical drive mechanism with only a simple processing step, and it is more cost-effective. .

According to the present invention, there is provided a method for controlling a care lift having a vertical drive mechanism for electrically lifting and lowering a supporting portion for suspending and supporting a person requiring care, in addition to the above-described method. When there is an operation input from the operation switch 43 for vertically moving the support unit, it is detected whether or not the driving operation of the vertical driving mechanism or the abnormality of the driving state has occurred,
When the abnormality is present, the abnormality is notified by sound, light, etc., and the vertical operation of the vertical drive mechanism is stopped, and the operation input by the operation switch is only invalidated. The automatic return includes a case where the return switch 46 is not provided.

[0053]

The present invention is embodied as in the above embodiment. In the care lift according to the first aspect, the operation input from the operation switch for vertically moving the support by the abnormality detecting means. The presence or absence of an abnormality in the driving operation or the driving state of the vertical drive mechanism is detected when an abnormality occurs, an abnormality detection signal is output, and an abnormality detection signal output from the abnormality detection unit is input to the abnormality notification unit. Then, the abnormality is notified by sound, light, or the like, and the vertical drive mechanism is stopped, and the operation input by the operation switch is invalidated. Therefore, it is possible to appropriately cope with the abnormality such as the drive state of the vertical drive mechanism.

According to the second aspect of the present invention, the normal state in which the abnormality notification state is canceled by the return switch provided in the abnormality notification means and the operation input by the operation switch becomes valid. Since it is possible to return to the normal state, it is possible to easily return after treating abnormalities such as the driving state of the vertical drive mechanism, and it is easy to use.

Further, in the nursing care lift according to the third aspect, the current detection unit provided in the abnormality detection means detects the current supplied to the electric drive unit provided in the up-down drive mechanism. The current comparison unit compares the current value detected by the current detection unit with a predetermined current value. The time comparison unit further sets a time period during which the current value detected by the current comparison unit is equal to or longer than a predetermined value. It is calculated and compared with a predetermined time value, and when the duration time is longer than the predetermined time value, an abnormality detection signal is output. Therefore, abnormality detection can be performed without providing a special detection element, and control can be performed. It is formed only by the circuit configuration in the device.

In the nursing care lift according to the fourth aspect, the temperature of the electric drive unit provided in the vertical drive mechanism is detected by the temperature detection unit by the temperature comparison unit provided in the abnormality detection unit. The output temperature detection output is compared with a predetermined temperature value, and when the detected temperature is higher than the predetermined temperature value, an abnormality detection signal is output. It is possible to accurately cope with the occurrence of an abnormality in the vertical drive mechanism in steps, which is excellent in cost.

Further, in the nursing care lift according to the fifth aspect, the input frequency comparing means provided in the abnormality detecting means,
The number of inputs of the operation input from the operation switch within a predetermined time is calculated and compared with a predetermined number of times, and when the number of times of input is larger than the predetermined number of times, an abnormality detection signal is output. The occurrence of an abnormality in the vertical drive mechanism can be accurately dealt with only by the step, and the cost is more excellent.

In the control method for a care lift according to the sixth and seventh aspects, the drive motor does not operate when the operation switch is operated again by the caregiver.
Further, by easily knowing the abnormality occurrence state, it is possible to appropriately cope with an abnormality such as a driving state of the vertical drive mechanism by appropriately coping with the cause of the abnormality, for example.

[0059]

[Brief description of the drawings]

FIG. 1 is a block diagram showing a schematic configuration of a care lift main body of a care lift according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing an appearance of the care lift.

FIG. 3 is an explanatory view showing a use state of the care lift.

FIG. 4 shows a care lift main body of the care lift, and (a)
Is a side view, and (b) is a plan view seen from the lower surface side.

FIG. 5 is a flowchart showing a control method of the care lift.

FIG. 6 is a block diagram illustrating a schematic configuration of a care lift main body of the care lift according to the second embodiment.

FIG. 7 is a flowchart showing a control method of the care lift.

FIG. 8 is a block diagram showing a schematic configuration of a care lift main body of the care lift according to the third embodiment.

FIG. 9 is a flowchart showing a control method of the care lift.

FIG. 10 is a perspective view showing the appearance of a nursing lift as a conventional example of the present invention.

[Explanation of symbols]

 1 Nursing Lift 43 Operation Switch 44 Current Detector 46 Return Switch 49 Temperature Detector

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Ryoji Enozono 1048 Odakadoma, Kadoma-shi, Osaka F-term in Matsushita Electric Works, Ltd.

Claims (7)

[Claims] 1. A nursing lift provided with a vertical drive mechanism for vertically moving a support portion for suspending and supporting a care-requiring person, and comprising an operation input from an operation switch for vertically operating the support portion. Abnormality detection means for detecting the occurrence of an abnormality in the driving operation or the driving state of the vertical drive mechanism and outputting an abnormality detection signal, and inputting the abnormality detection signal output from the abnormality detection means to produce a sound. Abnormality notification means for notifying an abnormality by light or the like, the up / down driving mechanism is stopped when the abnormality detection signal is output, and the operation input by the operation switch is invalidated. Nursing care lift characterized by. 2. The abnormality notification device according to claim 1, further comprising a return switch for releasing the abnormality notification state and returning to a normal state in which the operation input by the operation switch is made valid. The described care lift. 3. The current detector for detecting a current supplied to an electric drive unit provided in the vertical drive mechanism, and a current comparison unit for comparing a current value detected by the current detector with a predetermined current value. Means, when the detected current value is equal to or greater than a predetermined value, the current comparing means has a time comparing means for calculating its duration and comparing it with a predetermined time value, and the duration is greater than the predetermined time value 3. The care lift according to claim 1, wherein an abnormality detection signal is output at the time. 4. The temperature detection unit for detecting a temperature of an electric drive unit provided in the up-down drive mechanism,
A temperature comparison unit for comparing a temperature detection output from the temperature detection unit with a predetermined temperature value, wherein an abnormality detection signal is output when the detected temperature is higher than the predetermined temperature value. The nursing lift according to any one of claims 1 to 3. 5. The abnormality detection means includes input number comparison means for calculating the number of inputs of the operation input within a predetermined time and comparing the number of inputs with a predetermined number of times, wherein the number of inputs is larger than a predetermined number of times. The care lift according to any one of claims 1 to 4, wherein an abnormality detection signal is output at the time. 6. A method for controlling a care lift having a vertical drive mechanism for vertically moving a support portion for suspending and supporting a care-requiring person, the control portion comprising: an operating switch for vertically operating the support portion. When there is an operation input, the presence or absence of an abnormality in the drive operation or drive state of the vertical drive mechanism is detected, and when there is an abnormality, an abnormality is notified by sound, light, etc., and the vertical operation of the vertical drive mechanism is performed. A method for controlling a nursing lift, wherein the method is stopped and an operation input by the operation switch is invalidated. 7. A control method for a nursing care lift provided with a vertical drive mechanism for vertically moving a support portion for suspending and supporting a person requiring care by an operation switch for vertically moving the support portion. When there is an operation input, the presence or absence of an abnormality in the drive operation or drive state of the vertical drive mechanism is detected, and when there is an abnormality, an abnormality is notified by sound, light, etc., and the vertical operation of the vertical drive mechanism is performed. An abnormality notification mode is set in which the operation is stopped and the operation input by the operation switch is invalidated. During the operation of the abnormality notification mode, there was an operation input to the return switch for returning to the normal state in which the operation input by the operation switch is valid. A method for controlling a nursing lift, wherein the state is released at the same time.