JP6357086B2 - Electric equipment - Google Patents

Description

  The present invention relates to an electric device operated by a motor.

  This type of electric device has various operations such as a power switch for turning on / off the power supply to the electric device, a speed setting unit for setting the motor drive speed, and a changeover switch for switching the motor rotation direction. Are provided (see, for example, Patent Document 1).

  For example, in the electric mower described in Patent Document 1, a power switch and a dial for setting a rotation speed are provided on a mounting portion of a battery pack that is a DC power source, and a grip portion gripped by a user when performing mowing work In addition, a trigger switch and a forward / reverse switching lever are provided.

JP 2014-117267 A

  By the way, if these operation units are provided for each function that is the target of operation input, the number increases, and it becomes impossible to install in a desired place, or the installation part becomes large and difficult to operate. was there.

  The present invention has been made in view of such problems, and in an electric device operated by a user, a plurality of operation input functions are also used as one operation unit, thereby reducing the number of operation units and reducing the operation unit. The purpose is to be able to be installed in a place where it is easy to operate.

The electric device of the present invention includes a motor, a control unit, and a dual operation unit.
The dual-purpose operation unit is operated by the user for switching the main power source and the motor drive speed, and the control unit switches the main power source of the electric device according to the operation state of the dual-purpose operation unit. And switching of the driving speed of the motor.

  Therefore, according to the electric device of the present invention, the number of operation units is reduced and the installation location of the operation unit with respect to the electric device is reduced as compared with the conventional electric device in which the power switch and the speed setting unit are provided separately. be able to. Moreover, since the whole operation part can be made small, it becomes possible to install an operation part in the place where a user is easy to operate.

  Here, as the main power source switching control, the control unit changes the operation mode of the electric device to the normal power consumption mode when the dual operation unit is operated in a predetermined manner when the operation mode of the electric device is the low power consumption mode. You may comprise so that control to switch may be performed.

  Note that the low power consumption mode includes, for example, a stop mode in which the main power supply of the electric device is turned off to reduce power consumption, a sleep mode in which the control unit is set in the sleep state to reduce power consumption, and display on the display unit A display stop mode in which power consumption is reduced by turning off can be used.

  That is, the low power consumption mode may be an operation mode that consumes less power than the normal power consumption mode in which the main power supply is on and the electric device can normally operate, and the main power supply is not necessarily in the off state. It does not have to be.

  Next, the control unit switches the operation mode of the electric device to the normal power consumption mode when the operation time of the dual operation unit is equal to or longer than the set time, and the operation time of the dual operation unit is shorter than the set time. The motor drive speed may be switched.

  In this way, the user can switch the operation mode of the electric device from the low power consumption mode to the normal power consumption mode by operating the dual operation unit for a set time or longer. In addition, the driving speed of the motor can be switched by operating the dual operation unit for a time shorter than the set time. Therefore, the user can very easily switch the operation mode of the electric device and the drive speed of the motor.

  In addition, when the operation mode of the electric device is the normal power consumption mode, the control unit may be configured to display that effect on the display unit. In this way, when the user operates the dual operation unit to switch the operation mode of the electric device to the normal power consumption mode, it is possible to confirm that the operation mode has been switched by the display on the display unit. become able to.

  Next, when the operation mode of the electric device is the normal power consumption mode, the control unit switches the driving speed of the motor according to the operation state of the dual operation unit, and the operation mode of the electric device is in the low power consumption mode. In some cases, the motor drive speed may not be switched. In this way, when the operation mode of the electric device is the low power consumption mode, it is possible to prevent the drive speed of the motor from being switched due to an erroneous operation of the dual operation unit.

  In this case, when the operation mode of the electric device is switched from the low power consumption mode to the normal power consumption mode, the control unit reduces the motor driving speed and the previous time the electric device operation mode is reduced from the normal power consumption mode. The driving speed at the time of switching to the power mode may be set. In this way, when the motor is driven in the normal power consumption mode, the driving speed becomes different from the previous driving speed, and it is possible to prevent the user from feeling uncomfortable.

  The control unit is configured to switch the operation mode of the electric device to the low power consumption mode when the dual operation unit is operated for a predetermined time when the operation mode of the electric device is the normal power consumption mode. Also good.

  That is, the switching from the normal power consumption mode to the low power consumption mode may be automatically performed, for example, when the motor drive stop period becomes equal to or longer than the set period. However, with such switching, the user cannot forcibly turn off the main power supply of the electric device and shift to the low power consumption mode.

  In contrast, if the control unit is configured to switch the operation mode of the electric device to the low power consumption mode when the dual operation unit is operated for a predetermined time, the user can forcibly reduce the operation mode of the electric device. By shifting to the power consumption mode, the power consumption can be appropriately suppressed. Therefore, if it does in this way, the usability of an electric equipment can be improved.

  Next, the control unit may be configured to display on the display unit the driving speed of the motor that is switched according to the operation state of the shared operation unit. And if it does in this way, the user can confirm the drive speed of a motor by the display of a display part.

  In addition, when the control unit displays both the driving speed of the motor and the operation mode of the electric device on the display unit, it may be configured to use one display unit or display the operation mode of the electric device. A first display unit for displaying the motor and a second display unit for displaying the driving speed of the motor may be provided.

  When these two display units are provided, when the operation mode of the electric device is the normal power consumption mode, the control unit displays that fact on the first display unit and displays the motor driving speed on the second display unit. What is necessary is just to comprise so that it may display on a part.

  On the other hand, the driving of the motor may be started, for example, when the combined operation unit is operated in a predetermined manner and the operation mode of the electric device is changed to the normal power consumption mode, or provided separately from the combined operation unit. It may be started in accordance with a command from the operation switch.

  When the motor is driven according to the command from the operation switch, the control unit receives the drive command from the operation switch when the operation mode of the electric device is switched to the normal power consumption mode. May be driven at a preset driving speed.

  In this way, it is possible to prevent the motor from being driven when the operation mode of the electric device is the low power consumption mode. Can be prevented from being driven.

1 is a perspective view illustrating an overall configuration of a rechargeable mower according to an embodiment. It is a perspective view which expands and represents the grip part of a rechargeable mower. It is explanatory drawing showing the change of the operation state accompanying the operation of an operation panel, and the display change of a display panel. It is a block diagram showing the electric constitution of a rechargeable mower. It is a flowchart illustrating a control process executed in Figure 4 of the MCU. It is a flowchart showing a switch setting process executed in S160 of FIG. It is a flowchart showing a notification control processing executed in S210 of FIG. It is a flowchart showing a motor control process executed in S200 of FIG. It is a flowchart showing a power-saving mode process executed in S230 of FIG.

Embodiments of the present invention will be described below with reference to the drawings.
As shown in FIG. 1, the mower 10 of the present embodiment is a working machine that includes a rotary blade 23 that is driven by a motor 22 (see FIG. 4) and performs the mowing work by the rotation of the rotary blade 23.

  The mower 10 includes an elongate cylindrical support rod 11 extending in the front-rear direction, a cutter unit 20 provided at the front end portion of the support rod 11, and a controller unit 30 provided at the rear end portion of the support rod 11. I have.

The cutter unit 20 includes a front end housing 21 fixed to the front end portion of the support rod 11, and a motor 22 is accommodated in the front end housing 21.
Further, a drive shaft (not shown) that is rotationally driven by a motor 22 projects downward from the front end housing 21, and a rotary blade 23 is detachably attached to the drive shaft.

  The controller unit 30 includes a rear end housing 31 fixed to the rear end portion of the support rod 11. The rear end housing 31 accommodates a control circuit 50 (see FIG. 4) for driving and controlling the motor 22. Yes. In the present embodiment, the motor 22 is configured by a brushless motor.

  In addition, two battery packs 32 are detachably attached to the rear portion of the rear end housing 31 as a DC power source for supplying power to the mower 10, and each battery pack 32 is electrically connected to the control circuit 50. Connected.

Further, a handle 12 formed in a U shape by bending the pipe is fixed to an intermediate portion in the front-rear direction of the support rod 11 so as to be orthogonal to the central axis of the support rod 11.
At both ends of the handle 12, cylindrical grips 14 and 16 are provided for the operator to hold with the left and right hands.

The right grip 16 is provided with a trigger switch 18 as an operation switch and a trigger lock lever 19 at an intermediate portion in the longitudinal direction.
The trigger switch 18 is a switch for inputting a drive command for the motor 22 when the user pulls the grip 16 toward the grip 16, and is provided on the front side facing the rotary blade 23 around the grip 16.

  The trigger lock lever 19 is for releasing the trigger switch 18 from being restricted from being pulled to the grip 16 side (locked state). The trigger lock lever 19 is provided on the rear side facing the controller unit 30 side around the grip 16. Is provided.

When the trigger lock lever 19 is pushed to the grip 16 side, the trigger switch 18 is unlocked. In this state, the user pulls the trigger switch 18 to the grip 16 side to 22 drive commands can be input.

  Further, an operation input unit 40 is provided at the front end portion of the right grip 16 so that the user can switch the operation state of the mower 10 while holding the grip 16.

As shown in FIG. 2, the operation input unit 40 includes an operation panel 42 and a display panel 46.
The operation panel 42 is arranged so that the operation surface is substantially parallel to the center axis of the grip 16 and faces the rear surface side (in other words, the controller unit 30 side) in the same manner as the trigger lock lever 19. This is to make it easier for the user to operate with the thumb while holding the grip 16.

  In addition, the operation panel 42 is provided with a push button type power switch 43 that is turned on when pressed as a dual operation unit for turning on / off the main power source and switching the driving speed of the motor 22.

  The operation panel 42 is also provided with a reverse rotation switch 44 for inputting a command to reversely rotate the rotation direction of the motor 22 from the normal rotation direction. Note that the reverse rotation switch 44 is also a push button type switch that is turned on when pressed, similarly to the power switch 43.

  The power switch 43 and the reverse switch 44 are arranged in a direction perpendicular to the center axis of the grip 16. When the tip of the grip 16 is upward, the power switch 43 is located on the left side, and the reverse switch 44 is It arrange | positions so that it may be located on the right side (refer FIG. 3).

  In addition, the operation portion of the reverse switch 44 (in other words, the operable region on the operation panel 42) is smaller than the operation portion of the power switch 43 and is positioned closer to the tip side of the grip 16 than the power switch 43. Has been placed.

  The reverse rotation switch 44 temporarily rotates the rotary blade 23 in order to remove the grass entangled with the rotary blade 23 by rotating the rotary blade 23 in the reverse direction from the forward rotation direction (specifically, counterclockwise to clockwise). It is because it is used for the purpose.

  That is, the reverse rotation switch 44 is a sub switch that is used less frequently than the main power switch 43. Therefore, in the present embodiment, the power switch is arranged by making the operation part of the reverse rotation switch 44 smaller than the operation part of the power switch 43 and at a position away from the part gripped by the user in the grip 16. 43 is easy to operate.

  Next, the display panel 46 is provided in the operation input unit 40 so as to be positioned closer to the distal end side of the grip 16 than the operation panel 42, and two displays arranged in a direction perpendicular to the central axis of the grip 16. Parts 47 and 48.

  Of these two display units 47 and 48, the display unit 47 located on the right side when the tip of the grip 16 is above is a main power supply display unit for displaying the on / off state of the main power supply. It is lit when the main power supply is on (see FIG. 3).

  Further, the display unit 48 located on the left side when the tip of the grip 16 is on the upper side is a speed display unit for displaying the driving speed of the motor 22 switched by the operation of the power switch 43. 3 display elements (see FIG. 3).

  This is because, in the present embodiment, the driving speed of the motor 22 can be switched to three stages of high speed, medium speed, and low speed, and the speed display unit 48 is lit in the order of high speed, medium speed, and low speed. By reducing the number of elements, the driving speed of the motor 22 is displayed.

  That is, the three display elements of the speed display unit 48 are arranged vertically along the central axis of the grip 16. At high speed, all three display elements are lit. At medium speed, the bottom and center two display elements are lit. At low speed, only the bottom display element is lit to display the driving speed. .

  The display surface of the display panel 46 is inclined with respect to the operation surface of the operation panel 42 by a predetermined angle (for example, 15 °) toward the distal end side of the grip 16. This is because the display surface of the display panel 46 faces the user's face when the user holds the left and right grips 14 and 16, lifts the mower 10, and performs the mowing operation.

That is, in this embodiment, the visibility of the display panel 46 is ensured by inclining the display surface of the display panel 46 with respect to the operation surface of the operation panel 42.
Next, the operation setting state of the mower 10 that changes according to the operation of the power switch 43 and the reverse rotation switch 44 provided on the operation panel 42, and the lighting of the main power display unit 47 and the speed display unit 48 of the display panel 46 The state will be described with reference to FIG.

  As shown in the uppermost part of the table shown in FIG. 3, when the main power source is in the off state, if the power switch 43 is pressed for a predetermined time or longer (hereinafter referred to as long press), the main power source is turned on, and the mower 10 becomes operable, and the main power supply display section 47 is turned on.

  Further, the driving speed of the motor 22 at this time is set to the driving speed when the main power supply was turned off last time, and the display element corresponding to the driving speed is turned on in the speed display section 48. In the uppermost part of the table shown in FIG. 3, all the display elements are turned on, which indicates that the driving speed is high.

  On the other hand, as shown in the second row of the table shown in FIG. 3, when the main power supply is in the on state, if the power switch 43 is pressed long, the main power supply is turned off and the mower 10 enters the operation stop state. The display units 47 and 48 of the display panel 46 are all turned off.

  In this embodiment, switching from the on state to the off state of the main power supply is automatically performed not only when the power switch 43 is pressed and held, but also when the trigger switch 18 is not operated for a predetermined time or more. .

  When the main power source is in the on state, the mower 10 is in an operable state, and the operation mode of the mower 10 is the normal power consumption mode. In addition, when the main power supply is in the off state, the operation mode of the mower 10 is a low power that consumes less power than the normal power consumption mode because it waits for the power switch 43 to be pressed for a long time. It becomes consumption mode.

  Next, as shown in the third row of the table shown in FIG. 3, when the power switch 43 is pressed for a time shorter than a predetermined time (hereinafter referred to as a short press) when the main power is on, the driving speed of the motor 22 is reached. Is switched. The switching of the driving speed is performed in the order of high speed → medium speed → low speed → high speed.

  Further, the display of the speed display unit 48 is also switched according to the switching of the driving speed. For example, when the driving speed is switched from high speed to medium speed, as shown in FIG. Two of the display elements are lit.

  Next, as shown at the bottom of the table shown in FIG. 3, when the reverse rotation switch 44 is operated when the main power is on, the setting of the rotation direction of the motor 22 is switched from the normal rotation direction to the reverse rotation direction. It is done.

  When the rotation direction of the motor 22 is reversed in this way, the main power display unit 47 is switched from the normal lighting state to the blinking state. For this reason, the user can grasp not only the on / off state of the main power supply but also the rotation direction of the motor 22 when the trigger switch 18 is operated by checking the display state of the main power supply display unit 47. it can.

  Next, the switching of the operation state of the mower 10 based on the operation of the operation panel 42 and the display on the display panel 46 are executed by the control circuit 50 that controls the driving of the motor 22.

  As shown in FIG. 4, the control circuit 50 includes a motor drive unit 52 that drives the motor 22 by energizing the motor 22, a current detection unit 54 that detects a current flowing through the motor 22, and an MCU (Micro Control Unit). 60.

  The MCU 60 drives the motor 22 via the motor driving unit 52 so that the motor 22 rotates at a preset driving speed based on detection signals from the rotation sensor 24 and the current detection unit 54 provided in the motor 22. Control.

In addition, the above-described trigger switch 18, power switch 43, reverse switch 44, main power display unit 47, and speed display unit 48 are also connected to the MCU 60.
Then, the MCU 60 switches the main power on / off state, sets the driving speed of the motor 22, sets the rotation direction of the motor 22, and the like according to the operation state of the power switch 43 and the reverse rotation switch 44, and triggers. When the switch 18 is operated, the motor 22 is driven.

  Further, the MCU 60 controls the lighting state of the main power supply display unit 47 and the speed display unit 48 to thereby turn on / off the main power supply, the driving speed of the motor 22, and the motor 22 as shown in FIG. Displays the direction of rotation.

Further, the control circuit 50 is provided with a regulator unit 56 that receives power supply from the battery pack 32 and supplies a power supply voltage (DC constant voltage) Vcc to the MCU 60.
And even if the main power supply is turned off in the MCU 60 and the power supply from the regulator unit 56 is cut off, the control conditions (the driving speed of the motor 22 etc.) set at that time can be maintained. A nonvolatile memory 58 for storing control conditions is provided.

Next, control processing executed by the MCU 60 in order to perform drive control of the motor 22, setting of control conditions, and the like will be described with reference to flowcharts of FIGS.
As shown in FIG. 5, when the MCU 60 is activated by receiving power supply from the regulator unit 56, in S <b> 110 (S represents a step), the MCU 60 executes an initial setting process for initially setting various parameters used in the control process. .

  The regulator unit 56 is configured to start power supply to the MCU 60 when the power switch 43 is pressed for a long time and receives a wake-up signal from the activation circuit in the MCU 60.

  For this reason, in this embodiment, when the regulator unit 56 is activated, the main power supply is turned on, and the MCU 60 starts the control process, so that the operation mode of the mower 10 is the normal power consumption mode in which the normal operation is possible. Become.

  Next, in subsequent S120, a setting read process for reading control conditions such as the driving speed of the motor 22 from the nonvolatile memory 58 is executed, and in subsequent S130, it is determined whether or not a preset control cycle has elapsed. To do.

  In S130, if it is determined that the predetermined control cycle has not elapsed, the process of S130 is executed again to wait for the predetermined control cycle to elapse, and if it is determined that the predetermined control cycle has elapsed, The processes after S140 are executed. That is, the MCU 60 periodically executes the processes after S140 in a predetermined control cycle.

  In S140, a WDT clear process for clearing the watchdog timer (WDT) is executed, and in the subsequent S150, signals (switch signals) from the trigger switch 18, the power switch 43, and the reverse rotation switch 44 are confirmed.

  In S160, based on the switch signals from the power switch 43 and the reverse rotation switch 44 confirmed in S150, the on / off state of the main power supply, the driving speed of the motor 22, and the necessity of reverse rotation of the motor 22 are determined. The switch setting process to be set is executed.

Next, in S <b> 170, A / D conversion processing is performed in which the current detected by the current detection unit 54 and the battery voltage supplied from the battery pack 32 are captured by A / D conversion.
In S180, a detection signal from the rotation sensor 24 provided in the motor 22 is acquired, and a rotation speed acquisition process for obtaining the rotation speed of the motor 22 is executed.

  In subsequent S190, an abnormality confirmation process for confirming various abnormalities such as a decrease in battery voltage, abnormal rotation of the motor 22, and the like based on the A / D conversion result in S170 and the rotation speed of the motor 22 acquired in S180. Run.

  Next, in S200, it is determined whether or not the trigger switch 18 is operated. If the trigger switch 18 is operated, a motor control process for driving the motor 22 at a preset driving speed is executed.

  In S210, a notification control process is performed to notify the user of control conditions such as the on / off state of the main power supply and the driving speed via the main power supply display unit 47 and the speed display unit 48, and then S220. Then, a setting storage process for storing the control conditions such as the driving speed in the nonvolatile memory 58 is executed.

  In S230, when the power switch 43 is pressed for a long time and the main power supply is turned off, or when the trigger switch 18 is not operated for a predetermined time or more, the power supply from the regulator unit 56 to the MCU 60 itself is cut off. Or a power saving mode process for entering a sleep state.

Then, after the process execution of the S230, the process proceeds to S130 again, and executes the above-described S130 and subsequent steps again.
Note that when the MCU 60 enters the sleep state in the process of S230, the mower 10 is in an operation stop state and the power consumption becomes substantially zero. Therefore, the operation mode of the mower 10 is lower than the normal power consumption mode. It will shift to the power consumption mode.

  Next, the switch setting process (S160), the notification control process (S210), the motor control process (S200), and the power saving mode process (S230), which are the main processes according to the present invention, in the series of processes described above. explain.

  As shown in FIG. 6, in the switch setting process, first, in S310, it is determined whether or not the power switch 43 has been pressed for a long time. If the power switch 43 has been pressed for a long time, the process proceeds to S320, and it is determined whether or not the power flag is set.

The power flag is a flag that is set when the main power is on and the operation mode of the mower 10 is the normal power consumption mode.
If it is determined in S320 that the power flag is set, the power flag is cleared in S330, and then the process proceeds to S410. If it is determined in S320 that the power flag is cleared, S340. After setting the power supply flag at, the process proceeds to S410.

  On the other hand, if it is determined in S310 that the power switch 43 has not been pressed for a long time, the process proceeds to S350, where it is determined whether the power switch 43 has been pressed for a short time, and the power switch 43 is pressed for a short time. If not, the process proceeds to S410.

  Next, when it is determined in S350 that the power switch 43 has been pressed for a short time, the process proceeds to S360, in which whether or not the currently set operation mode of the motor 22 is the high-speed mode (in other words, Whether or not the driving speed of the motor 22 is high).

  In S360, if it is determined that the operation mode of the motor 22 is the high speed mode, the process proceeds to S370, and the operation speed of the motor 22 is changed to the medium speed mode by changing the operation mode of the motor 22 to the medium speed mode. Set, and proceed to S410.

  Next, when it is determined in S360 that the operation mode of the motor 22 is not the high speed mode, the process proceeds to S380, and whether or not the currently set operation mode of the motor 22 is the medium speed mode. (In other words, whether or not the driving speed of the motor 22 is medium speed) is determined.

  If it is determined in S380 that the operation mode of the motor 22 is the medium speed mode, the process proceeds to S390, and the drive speed of the motor 22 is set to the low speed by changing the operation mode of the motor 22 to the low speed mode. Then, the process proceeds to S410.

  If it is determined in S380 that the operation mode of the motor 22 is not the medium speed mode, the current operation mode of the motor 22 is the low speed mode. Is changed to the high speed mode, the drive speed of the motor 22 is set to high speed, and the process proceeds to S410.

  As described above, in S310 to S400, according to the operation state (long press / short press) of the power switch 43, the power supply flag (in other words, the main power supply) is switched on and off, and the operation mode of the motor 22 ( In other words, the drive speed) is set.

  Next, in S410, it is determined whether or not the reverse rotation switch 44 is operated to be in an on state. If the reverse rotation switch 44 is not in the ON state (that is, if the reverse rotation switch 44 is not operated), the switch setting process ends.

On the other hand, if the reverse rotation switch 44 is operated and turned on, the process proceeds to S420, and it is determined whether or not the reverse rotation flag is cleared.
The reverse rotation flag is a flag for instructing whether to rotate the motor 22 in the forward direction for mowing or in the reverse direction in order to remove the grass entangled with the rotary blade 23. It is set to instruct to reversely rotate the motor 22.

If it is determined in S420 that the reverse rotation flag is cleared, the process proceeds to S430, the reverse rotation flag is set, and the switch setting process is terminated.
If it is determined in S420 that the reverse rotation flag is not cleared, the process proceeds to S440, the reverse rotation flag is cleared, and the switch setting process ends.

  Next, as shown in FIG. 7, in the notification control process, first, in S500, it is determined whether or not a power supply flag is set. If the power flag is not set, in S510, the display units 47 and 48 of the display panel 46 are all turned off, and the notification control process ends.

By this process, the user can grasp from the state of the display panel 46 that the mower 10 is in the operation stop state (in other words, the low power consumption mode).
Next, in S500, if it is determined that the power flag is set, the process proceeds to S520, and it is determined whether or not the reverse rotation flag is set.

  If the reverse flag is not set, the process proceeds to S530, and the main power indicator 47 is turned on to turn on the main power of the mower 10 (in other words, the mower 10 operates normally). And that the rotation direction of the motor 22 (and thus the rotary blade 23) is a positive direction in which mowing is possible, and the process proceeds to S550.

  If it is determined in S520 that the reverse rotation flag is set, the process proceeds to S540 and the main power supply of the mower 10 is in the on state by blinking the main power display 47 at a predetermined cycle. The motor 22 (and hence the rotary blade 23) is notified that the rotation direction is the reverse direction, and the process proceeds to S550.

  Next, in S550, it is determined whether or not the operation mode of the motor 22 is the high speed mode. If the operation mode of the motor 22 is the high speed mode, the process proceeds to S560, and all three display elements of the speed display section 48 are turned on to confirm that the drive speed of the motor 22 is set to high speed. Information is notified and the notification control process is terminated.

If it is determined in S550 that the operation mode of the motor 22 is not the high speed mode, the process proceeds to S570 to determine whether or not the operation mode of the motor 22 is the medium speed mode.
If the operation mode of the motor 22 is the medium speed mode, the process proceeds to S580, and two of the three display elements of the speed display unit 48 are turned on, so that the drive speed of the motor 22 is set to the medium speed. It is notified that it is set, and the notification control process ends.

  If it is determined in S570 that the operation mode of the motor 22 is not the medium speed mode, the process proceeds to S590. In S590, since the currently set operation mode of the motor 22 is the low speed mode, the driving speed of the motor 22 is set to the low speed by lighting one of the three display elements of the speed display section 48. Is notified, and the notification control process is terminated.

  Thus, in the notification control process, by switching the display state of the main power display unit 47 and the speed display unit 48, the main power on / off state, the driving speed of the motor 22 and the setting state of the reverse rotation driving, Is notified. Therefore, the user can easily grasp each of these states.

  Next, as shown in FIG. 8, in the motor control process, first, in S610, it is determined whether or not the power flag is set. If the power flag is not set, it is not necessary to control the drive of the motor 22, and the motor control process is terminated.

On the other hand, if it is determined in S610 that the power flag is set, the process proceeds to S620, and it is determined whether or not the trigger switch 18 is in the ON state.
If the trigger switch is on, it is determined in S640 whether or not the reverse rotation flag is cleared.

  If it is determined in S640 that the reverse rotation flag is cleared, the process proceeds to S650, and the motor 22 is rotated in the forward direction at the currently set drive speed (high speed, medium speed, or low speed). The forward rotation driving process is executed, and the motor control process is terminated.

  If it is determined in S640 that the reverse rotation flag is not cleared (in other words, the reverse rotation flag is set), the process proceeds to S660, and the reverse rotation drive process executed in S670 is executed. It is determined whether the time (that is, the driving time of the motor 22 in the reverse direction) has reached a predetermined time.

  If it is determined in S660 that the predetermined time has not elapsed after the start of the reverse drive process, the process proceeds to S670, where the reverse drive process for rotating the motor 22 in the reverse direction is performed. The control process ends.

  In the reverse rotation driving process, the driving time of the motor 22 in the reverse direction is measured. In S660, whether or not the execution time of the reverse rotation driving process has reached a predetermined time using the time counting. Judging.

  Further, the reason why the motor 22 is rotated in the reverse direction in the reverse rotation driving process is to remove the grass entangled with the rotary blade 23. Therefore, the driving speed of the motor 22 at this time is a speed at which the grass can be removed. As long as it is sufficient, it may be a constant speed set in advance, or may be a reverse rotation driving speed set corresponding to each mode of high speed, medium speed, and low speed.

  However, if the driving speed is higher than when the motor 22 is rotated in the forward direction, the grass removed from the rotary blade 23 may be entangled in the reverse direction. It is better to set it below the driving speed.

  Next, in S660, when it is determined that a predetermined time has elapsed after the start of the reverse drive process, the process proceeds to S680. In S680, a motor stop process for stopping the driving of the motor 22 is executed, and the motor control process ends.

  If it is determined in S620 that the trigger switch 18 is not in the ON state, the process proceeds to S690 and the driving time in the reverse direction of the motor 22 counted in the reverse rotation driving process is cleared. At the same time, the reverse rotation flag is cleared. Then, after executing the process of S690, the process proceeds to S680, the drive of the motor 22 is stopped, and the motor control process ends.

Thus, in the motor control process, when the trigger switch 18 is operated, the motor 22 is driven in accordance with the control conditions set in the switch setting process of FIG.
Therefore, the user can perform the mowing work by operating the trigger switch 18 to rotate the motor 22 (and thus the rotary blade 23) at a desired driving speed.

  Further, the user can operate the reverse switch 44 to reversely rotate the motor 22 (and hence the rotary blade 23) to remove grass entangled with the rotary blade 23, or operate the power switch 43. By doing so, the operation of the mower 10 can also be stopped.

  In addition, since the time for rotating the motor 22 in the reverse direction is limited to a predetermined time by the determination process in S660, it is possible to prevent the user from performing the mowing work in the reverse rotation. Furthermore, useless power consumption due to reverse rotation of the motor 22 can be suppressed.

  In addition, what is necessary is just to set time required in order to remove the grass entangled with the rotary blade 23 by reversely rotating the motor 22 in this predetermined time, and the drive of the motor 22 at the time of the rotary blade 23 and reverse rotation. What is necessary is just to set time about 1 second-about 30 seconds, although it changes with speeds.

  Next, as shown in FIG. 9, in the power saving mode process, first, in S710, it is determined whether or not the power flag is set. If the power flag is set, the process proceeds to S720.

  In S720, it is determined whether or not the time when the trigger switch 18 is not operated (no operation time) has reached a predetermined time set in advance, and if the no operation time has not reached the predetermined time, the power saving mode processing is performed. Exit.

  On the other hand, if it is determined in S720 that the non-operation time of the trigger switch 18 has reached a predetermined time, or if it is determined in S710 that the power flag is not set, the process proceeds to S730.

  Then, in S730, the sleep process for putting the MCU 60 itself into the low power consumption mode state is executed by stopping the supply of the power supply voltage Vcc from the regulator unit 56 to the MCU 60.

In addition, by execution of this sleep process, MCU60 stops operation | movement and the mower 10 will be in an operation | movement stop state.
As described above, in the mower 10 of this embodiment, the power switch 43 functions as a dual operation unit of the present invention. Then, by pressing and holding the power switch 43, the main power of the mower 10 can be switched from the off state to the on state, or from the on state to the off state. Further, by short-pressing the power switch 43, the driving speed when driving the motor 22 can be switched in three stages in the order of high speed → medium speed → low speed.

  For this reason, according to the mower 10 of this embodiment, compared with the mower described in Patent Document 1 in which the power switch and the speed setting unit are separately provided, the number of operation switches is reduced, and each switch The installation place of can be reduced.

  Further, since the drive speed setting function of the motor 22 is added to the power switch 43, the size of the operation panel 42 can be reduced without reducing the operability of the power switch 43 and the reverse rotation switch 44.

  Further, the MCU 60 is activated by the power supply from the regulator unit 56, and the mower 10 is in an operable state (in other words, the main power source is in an on state), and the driving speed of the motor 22 is determined by the display panel. Notification is made via a main power supply display unit 47 and a speed display unit 48 provided at 46. For this reason, the user can grasp | ascertain the state of the mower 10 easily.

  Further, the drive speed of the motor 22 can be set when the MCU 60 is operating, and when the MCU 60 stops operating, the drive speed is stored in the nonvolatile memory 58 and the MCU 60 is activated. The stored driving speed is read out.

  For this reason, it is possible to prevent the drive speed of the motor 22 from being changed when the operation of the MCU 60 is stopped (that is, when the main power supply is turned off). Further, when the trigger switch 18 is operated immediately after the MCU 60 is activated, the motor 22 is driven at the previous driving speed, so that it is possible to prevent the user from feeling uncomfortable.

  In the present embodiment, the control circuit 50 corresponds to the control unit of the present invention, the power switch 43 corresponds to the dual operation unit of the present invention, the trigger switch 18 corresponds to the operation switch of the present invention, The main power display unit 47 corresponds to the first display unit of the present invention, and the speed display unit 48 corresponds to the second display unit of the present invention.

As mentioned above, although one Embodiment of this invention was described, this invention is not limited to the said embodiment, A various aspect can be taken in the range which does not deviate from the summary of this invention.
For example, in the above embodiment, the main power source (in other words, the regulator unit 56) can be turned on by long-pressing the power switch 43 serving as the dual operation unit, and the motor 22 can be turned on by short-pressing the power switch 43. It has been described that the driving speed can be changed. However, such an operation method of the dual operation unit is an example, and the driving speed of the main power source and the motor 22 may be switched according to preset conditions such as the operation time and the number of operations.

  In the above embodiment, the power switch 43 as the dual operation unit is described as a push button type. However, the dual operation unit may be, for example, a slide type switch or a contact switch. A switch that can self-hold the on / off state may be used.

  In the above embodiment, the driving speed of the motor 22 has been described as being switchable in three stages. However, the switching of the driving speed may be two stages or four or more stages.

  Moreover, although the said embodiment demonstrated the case where this invention was applied to the rechargeable mower which receives electric power supply from a battery pack, this invention is an electrically-powered apparatus provided with motors, such as an electric tool, for example If so, the present invention can be applied similarly to the above embodiment.

  In addition, the present invention can be applied to the rechargeable electric device that receives power supply from the battery pack or the electric device that operates by receiving AC power from a commercial power source, as in the above embodiment.

  DESCRIPTION OF SYMBOLS 10 ... Mower 11 ... Support rod, 12 ... Handle, 14, 16 ... Grip, 18 ... Trigger switch, 19 ... Trigger lock lever, 20 ... Cutter unit, 21 ... Front end housing, 22 ... Motor, 23 ... Rotary blade, 24 ... Rotation sensor, 30 ... Controller unit, 31 ... Rear end housing, 32 ... Battery pack, 40 ... Operation input section, 42 ... Operation panel, 43 ... Power switch, 44 ... Reverse switch, 46 ... Display panel, 47 ... Main Power supply display unit, 48 ... speed display unit, 50 ... control circuit, 52 ... motor drive unit, 54 ... current detection unit, 56 ... regulator unit, 58 ... nonvolatile memory, 60 ... MCU.

Claims (9)

An electric device equipped with a motor,
A control unit for driving and controlling the motor;
A dual operation unit operated by a user for switching the operation mode of the electric device and switching the driving speed of the motor,
An operation switch for inputting a drive command of the motor;
With
The control unit performs control to switch the operation mode and control to switch the driving speed according to an operation state of the dual operation unit ,
The operation mode includes a mode in which the motor is driven when the drive command is input from the operation switch, and a mode in which the motor is not driven even when the drive command is input from the operation switch. machine. The control unit switches the operation mode of the electric device when the operation time of the dual operation unit by the user is equal to or longer than a set time, and drives the motor when the operation time is shorter than the set time. The electric device according to claim 1 , wherein the electric device is configured to switch speeds.   The controller is
  In the control for switching the operation mode, the operation mode is switched between a normal power consumption mode and a low power consumption mode,
  When the operation mode of the electric device is the normal power consumption mode, the motor is driven when the drive command is input from the operation switch, and when the operation mode of the electric device is the low power consumption mode, The electric device according to claim 1 or 2, wherein the electric device is configured not to drive the motor even if the drive command is input from the operation switch.   When the operation mode of the electric device is the normal power consumption mode, the control unit switches the operation mode of the electric device to the low power consumption mode even when the operation switch is not operated for a predetermined time or more. The electric device according to claim 3, which is configured. A display unit for displaying the operating state of the electric device;
The electric device according to claim 3 or 4 , wherein when the operation mode of the electric device is the normal power consumption mode, the control unit is configured to display a message to that effect on the display unit. When the operation mode of the electric device is the normal power consumption mode, the control unit switches the driving speed of the motor according to the operation state of the dual operation unit, and the operation mode of the electric device is the low power consumption mode. The electric device according to any one of claims 3 to 5 , wherein when the mode is set, the drive speed of the motor is not switched. When the operation unit switches the operation mode of the electric device from the low power consumption mode to the normal power consumption mode, the control unit sets the driving speed of the motor last time, and changes the operation mode of the electric device from the normal power consumption mode. The electric device according to claim 6 , wherein the electric device is configured to be set to a driving speed when switched to the low power consumption mode. A display unit for displaying the operating state of the electric device;
The said control part is comprised so that the drive speed of the said motor switched according to the operation state of the said combined operation part may be displayed on the said display part, The any one of Claims 1-7. Electric equipment. In the electric device according to claim 8, which refers to claim 5 ,
The display unit includes a first display unit for displaying an operation mode of the electric device, and a second display unit for displaying a driving speed of the motor,
When the operation mode of the electric device is the normal power consumption mode, the control unit displays the fact on the first display unit, and displays the driving speed of the motor on the second display unit. Electric equipment that has been.