Electric power tool

Abstract

To provide an electric work machine which can effectively use an illuminator provided on the electric work machine with simple operation.SOLUTION: An electric work machine includes a motor, an illuminator, a first operation part, a second operation part, a state detection part, and an illumination control part. The illumination control part turns the illuminator on in first time in response to operation of the first operation part during detection of a release state by the state detection part, and turns the illuminator on in second time different from the first time in response to operation of the first operation part during detection of a lock state by the state detection part.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present disclosure relates to an electric work machine equipped with a lighting device. [Background technology]

[0002] The electric power tool described in Patent Document 1 includes a trigger, a light, a motor, and an input button. When the trigger is pulled, the light turns on, and when the trigger is released, the light turns off after a specific time. The specific time is set from among a number of time periods according to the operation of the input button. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2017-209760 A Summary of the Invention [Problem to be solved by the invention]

[0004] The power tool requires an input button for adjusting the specific time and the input button must be operated, which makes the power tool complicated in structure and operation. Also, the power tool requires a trigger to be pulled when the light is to be kept on. As a result, the motor is driven unnecessarily, making it difficult to use the light effectively.

[0005] One aspect of the present disclosure provides an electric operating machine that allows effective use of a lighting device provided in the electric operating machine with a simple operation. [Means for solving the problem]

[0006] One aspect of the present disclosure is an electric work machine including a motor, an illuminator, a first operation unit, a second operation unit, a state detection unit, and an illumination control unit. The first operation unit is configured to be operated to drive the motor and to turn on the illuminator. The second operation unit is configured to be operated to set the motor to a locked state in which the motor cannot be driven regardless of whether the first operation unit is operated, or to a released state in which the motor can be driven in response to the operation of the first operation unit. The state detection unit is configured to detect whether the state set by the second operation unit is the locked state or the released state. The illumination control unit is configured to turn on the illuminator for a first time in response to the first operation unit being operated while the state detection unit is detecting the released state, and is configured to turn on the illuminator for a second time different from the first time in response to the first operation unit being operated while the state detection unit is detecting the locked state.

[0007] In an electric working machine according to one aspect of the present disclosure, the illuminator is turned on for a first period of time in response to the first operating unit being operated when the motor is set to a released state by the second operating unit. Also, the illuminator is turned on for a second period of time in response to the first operating unit being operated when the motor is set to a locked state by the second operating unit. That is, when an electric working machine that cannot drive a motor is used as a lighting device, the lighting time is changed from the lighting time when the electric working machine is capable of working. Therefore, the lighting of the electric working machine can be effectively used with a simple operation.

[0008] The electric operating machine may further include a grip portion configured to be held by a user's hand. The first operating portion may be provided at a first installation position of the electric operating machine. The second operating portion may be provided at a second installation position of the electric operating machine. The first installation position and the second installation position may be within reach of a user's hand holding the grip portion.

[0009] Since the first installation position and the second installation position are within reach of the user holding the grip, the user can operate the first operation unit and the second operation unit with the hand holding the grip, and thus the user can easily control the lighting of the illuminator with the hand holding the grip.

[0010] The second time period may be longer than the first time period. By making the second time longer than the first time, when the motor is set to the locked state by the second operation unit, the electric work machine can be used more effectively as a lighting device, and when the motor is set to the unlocked state by the second operation unit, power consumption by the lighting device can be reduced.

[0011] The lighting control unit may be configured, when the lighting unit is turned on while the locked state is being detected by the state detection unit, to change the lighting time of the lighting unit from the second time period in response to the first operating unit being operated again before the second time period has elapsed.

[0012] In response to the first operating unit being operated again before the second time has elapsed, the lighting time of the lighting device is changed from the second time. In other words, when the electric operating machine is used as a lighting device, the lighting time can be changed with a simple operation. As a result, the convenience of the lighting device of the electric operating machine can be improved.

[0013] The illumination control unit may be configured to immediately turn off the illuminator in response to the first operation unit being operated again before the second time period has elapsed. In response to the first operating unit being operated again before the second time period has elapsed, the illuminator is immediately turned off. Thus, when the electric operating machine is being used as a lighting device, the user can turn off the illuminator whenever he or she wishes.

[0014] The lighting control unit may be configured, when the illuminator is turned on while the state detection unit is detecting the locked state, to change the lighting time of the illuminator from the second time period in response to the state detection unit detecting the unlocked state before the second time period has elapsed.

[0015] If the release state is detected before the second time has elapsed, the lighting time is changed from the second time. In other words, when the electric operating machine is being used as a lighting device, if the use of the electric operating machine as a lighting device is stopped, the lighting time of the illuminator can be changed.

[0016] The lighting control unit may be configured to, when the illuminator is turned on while the state detection unit is detecting the unlocked state, continue the first time as the lighting time even if the state detection unit detects the locked state before the first time has elapsed.

[0017] If the locked state is detected before the first time period has elapsed, the first time period is maintained as the illumination time period. In other words, the electric operating machine cannot be used as a lighting device unless the first operating unit is operated while the motor is locked.

[0018] The lighting control unit may be configured to change a lighting time of the illuminator from the second time in response to detection by the operation detection unit that the first operation unit has been continuously operated for a period longer than a predetermined time when the illuminator is turned on while the state detection unit is detecting the locked state, before the second time has elapsed.

[0019] In response to the first operation unit being continuously operated before the second time has elapsed, the lighting time of the lighting device is changed from the second time. There may be a case where the motor is locked and the electric work machine is stored in the case. At this time, something may come into contact with the first operation unit of the electric work machine inside the case, and the first operation unit may continue to be operated. In that case, if the lighting device continues to be turned on for the second time, the power consumption by the lighting device increases. Therefore, in response to the first operation unit being continuously operated before the second time has elapsed, the lighting time of the lighting device is changed. This makes it possible to appropriately change the lighting time of the lighting device that has been set in response to an operation of the first operation unit that is not intended by the user.

[0020] The lighting control unit may be configured to immediately turn off the illuminator in response to detection by the operation detection unit that the first operation unit has been continuously operated before the second time period has elapsed.

[0021] In response to the first operation unit being continuously operated before the second time period has elapsed, the illuminator is immediately turned off, thereby making it possible to reduce power consumption caused by unintended operation of the first operation unit by the user.

[0022] The electric operating machine may further include a third operation unit configured to be operated to set the illumination of the illumination device to enabled or disabled. The illumination control unit may be configured to set the illumination of the illumination device to enabled or disabled in response to the operation of the third operation unit. The illumination control unit may be configured to keep the illumination device turned off in response to the first operation unit being operated while the state detection unit is detecting the released state when the third operation unit has set the illumination of the illumination device to disabled. The illumination control unit may be configured to turn on the illumination device in response to the first operation unit being operated while the state detection unit is detecting the locked state when the third operation unit has set the illumination of the illumination device to disabled.

[0023] Even if the illumination device is set to be disabled, the illumination device can be turned on when the electric work machine is used as a lighting device.

[0024] The lighting control unit may be configured to prohibit changing the setting of enabling or disabling the lighting of the lighting unit in response to operation of the third operating unit, when the lighting unit is turned on while the locked state is being detected by the state detection unit.

[0025] When the electric work machine is used as a lighting device, the setting of whether the lighting is on or off cannot be changed. This makes it possible to carry over the setting of whether the lighting is on or off from the previous unlocked state when the motor is returned from the locked state to the unlocked state.

[0026] The electric operating machine may further include a notification unit configured to notify that the illuminator is on while the state detection unit is detecting the locked state. The fact that the illuminator is on while the locked state is being detected is notified to the user, allowing the user to recognize that the duration of time that the illuminator is on is different from the duration when work can be performed with the electric work machine.

[0027] The motor may be configured to be driven in a plurality of different operation modes. The notification unit may be further configured to notify the current operation mode of the motor. By using the same notification unit to notify the operation mode and to notify the lighting of the illuminator, the number of parts and therefore the installation space for the notification unit can be reduced.

[0028] The illuminator may be configured to turn on at a first luminance and a second luminance different from the first luminance. The illumination control unit may be configured to turn on the illuminator at the first luminance while the state detection unit is detecting the released state. Also, the illumination control unit may be configured to turn on the illuminator at the second luminance while the state detection unit is detecting the locked state.

[0029] The luminance when the electric work machine is used as a lighting device is different from the luminance when the electric work machine is capable of performing work, so that the lighting device of the electric work machine can be used more effectively.

[0030] The electric operating machine may further include a motor control unit configured to control driving of the motor. The second operating unit may be configured to be operated to any one of a first operating position, a second operating position, and a neutral position corresponding to an intermediate position between the first operating position and the second operating position. The motor control unit may be configured to rotate the motor in a forward direction in response to operation of the first operating unit when the second operating unit is located at the first operating position. The motor control unit may be configured to rotate the motor in a direction opposite to the forward direction in response to operation of the first operating unit when the second operating unit is located at the second operating position. The motor control unit may be configured to lock the motor in a non-driven state when the second operating unit is located at the neutral position.

[0031] The rotation direction of the motor can be switched by switching the position of the second operation unit between the first operation position and the second operation position. Furthermore, the motor can be locked by setting the position of the second operation unit to the neutral position. In other words, the motor can be locked using the operation unit for switching the rotation direction of the motor without increasing the number of parts.

[0032] The first operation unit may correspond to a trigger. The lighting control unit may be configured to turn on the illuminator in response to the first operation unit being pulled a first amount when the second operation unit is located at the first operation position or the second operation position. The motor control unit may be configured to drive the motor in response to the first operation unit being pulled a second amount greater than the first amount when the second operation unit is located at the first operation position or the second operation position.

[0033] When the motor is released, the illuminator can be turned on or the motor can be driven depending on how much the trigger is pulled.

[0034] The first operating part may be configured to be pulled a first amount when the second operating part is located in a neutral position. When the second operating portion is in the neutral position, the illuminator can be turned on by pulling the trigger a first amount. [Brief description of the drawings]

[0035] [Figure 1] 1 is a diagram showing the appearance of an impact driver, which is an example of an electric working machine according to an embodiment of the present invention; [Diagram 2] 1 is a diagram showing the appearance of a reciprocating saw that is an example of an electric working machine according to an embodiment of the present invention; [Diagram 3] 1 is a diagram showing the appearance of a pin tucker that is an example of an electric working machine according to an embodiment of the present invention; [Figure 4] FIG. 2 is a diagram showing the electrical configuration of the electric operating machine according to the present embodiment. [Diagram 5] 11 is a first example of a time chart of a power switch, a forward switch, a reverse switch, an impact / light switch, a light function, a light mode, and a light on / off according to the present embodiment. [Figure 6] 2 is a second example of a time chart of the power switch, forward switch, reverse switch, impact / light switch, light function, light mode, and light on / off according to the present embodiment. [Figure 7] 13 is a third example of a time chart of the power switch, forward switch, reverse switch, impact / light switch, light function, light mode, and light on / off according to the present embodiment. [Figure 8] 4 is a fourth example of a timing chart of the power switch, forward switch, reverse switch, impact / light switch, light function, light mode, and light on / off in the present embodiment. [Figure 9] 5 is a fifth example of a time chart of the power switch, forward switch, reverse switch, impact / light switch, light function, light mode, and light on / off in the present embodiment. [Figure 10]13 is an example of a time chart of a power switch, a forward rotation switch, a reverse rotation switch, an impact / light switch, a light function, and a light on / off according to a reference example. [Figure 11] 13 is another example of a time chart of the power switch, the forward rotation switch, the reverse rotation switch, the impact / light switch, the light function, and the on / off of the light according to the reference example. [Figure 12] FIG. 2 is a flowchart showing the overall process executed by a microcomputer of the electric operating machine according to the present embodiment. [Figure 13A] FIG. 4 is a flowchart showing a part of a write process executed by a microcomputer of the electric operating machine according to the embodiment. [Figure 13B] FIG. 10 is a flowchart showing another part of the write process executed by the microcomputer of the electric operating machine according to the embodiment. [Figure 13C] FIG. 10 is a flowchart showing another part of the write process executed by the microcomputer of the electric operating machine according to the embodiment. [Figure 13D] FIG. 11 is a flowchart showing the remaining part of the write process executed by the microcomputer of the electric operating machine according to the embodiment. [Figure 14] 11 is a table showing lighting times according to the present embodiment. [Figure 15] 11 is a table showing the brightness of the light according to the present embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0036] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. <1. Configuration of electric work machine> <1-1. Outline of electric work machine> First, an impact driver 1A will be described with reference to Fig. 1 as an example of an electric work machine 1 according to this embodiment. The impact driver 1A is used for fixing a bottle, a nut, etc. to an object and removing it from the object. The impact driver 1A includes a housing 4A, a hand grip 5A, a chuck sleeve 6, a trigger 7A, a battery mounting section 8A, a mode switch 9, a forward / reverse switch 10A, an operation panel 11, and two lights 20A.

[0037] The housing 4A is formed in a cylindrical shape extending in the front-rear direction, and accommodates a striking mechanism, a motor 50 (described later), and the like. The hand grip 5A is configured in a columnar shape extending in the vertical direction, and is connected to the lower side of the housing 4A. The hand grip 5A is configured so that the user can hold it with one hand.

[0038] The battery mounting section 8A is connected to the lower end of the hand grip 5A. The battery pack 3 is removably mounted on the battery mounting section 8A. The battery pack 3 includes a rechargeable battery therein. The rechargeable battery is, for example, a lithium ion battery. The battery pack 3 supplies power to a motor 50, a light 20A, and the like, which will be described later.

[0039] The chuck sleeve 6 is connected to the front end of the housing 4A. An attachment mechanism is provided at the front end of the chuck sleeve 6. Various tool bits are detachably attached to the attachment mechanism. The various tool bits include a driver bit, a socket bit, etc.

[0040] The two lights 20A are provided on the right and left sides of the front end of the housing 4A. That is, the two lights 20A are provided at the front end of the housing 4A so as to sandwich the chuck sleeve 6, and illuminate the workpiece during operation. In FIG. 1, only the right light 20A is shown. Each light 20A includes at least one Light Emitting Diode (LED).

[0041] The mode changeover switch 9 is provided on the upper part of the front side of the hand grip 5A. The mode changeover switch 9 is provided within reach of the hand holding the hand grip 5A. In other words, the mode changeover switch 9 is disposed at a position where it can be operated by the hand holding the hand grip 5A. The mode changeover switch 9 is operated to switch to a preregistered operation mode among the multiple operation modes of the impact driver 1A, i.e., the multiple operation modes of the motor 50. The impact driver 1A has multiple operation modes according to the work purpose.

[0042] The forward / reverse switch 10A is provided between the housing 4A and the hand grip 5A, behind the mode switch 9. The forward / reverse switch 10A is provided within reach of the hand holding the hand grip 5A. That is, the forward / reverse switch 10A is disposed in a position where it can be operated by the hand holding the hand grip 5A. Note that the forward / reverse switch 10A only needs to be disposed in a position where it can be operated by the hand holding the hand grip 5A, and may be provided in the hand grip 5A or below the hand grip 5A, specifically, between the hand grip 5A and the battery attachment section 8A.

[0043] The forward / reverse changeover switch 10A is configured to be operated by a user to change the rotation direction of the motor 50 between a forward direction and a reverse direction opposite to the forward direction. When the rotation direction of the motor 50 is changed to the forward direction, the rotation direction of the tool bit becomes the direction for tightening the screw, and when the rotation direction of the motor 50 is changed to the reverse direction, the rotation direction of the tool bit becomes the direction for loosening the screw.

[0044] Moreover, the forward / reverse switch 10A is configured to be operated by a user to lock the motor 50 in a non-driven state, regardless of whether or not a trigger 7A, which will be described later, is operated. In the following, the state in which the motor 50 is locked in a non-driven state is referred to as a locked state, and the state in which the motor 50 is not locked in a non-driven state is referred to as an unlocked state.

[0045] Specifically, the forward / reverse switch 10A is configured to be slidable between a first operating position and a second operating position. In FIG. 1, the first operating position is the rightmost position, and the second operating position is the leftmost position. When the forward / reverse switch 10A is in the first operating position, the motor 50 rotates in the forward direction, and when the forward / reverse switch 10A is in the second operating position, the motor 50 rotates in the reverse direction. When the forward / reverse switch 10A is in the neutral position, the motor 50 is in a locked state. The neutral position corresponds to an intermediate position between the first operating position and the second operating position. When the motor 50 is in the locked state, work cannot be performed using the impact driver 1A. In this embodiment, the forward / reverse switch 10A corresponds to an example of a second operating unit of the present disclosure.

[0046] The trigger 7A is provided below the mode changeover switch 9 on the front side of the hand grip 5A. The trigger 7A is located in a position that allows it to be operated with the hand holding the hand grip 5A. Therefore, the user can operate the mode changeover switch 9, the forward / reverse changeover switch 10A, and the trigger 7A with the hand holding the hand grip 5A. In other words, the user can hold and operate the impact driver 1A with one hand.

[0047] The trigger 7A is configured to be operated by a user to drive the motor 50. The trigger 7A is also configured to be operated by a user to turn on the light 20A. Specifically, when the forward / reverse switch 10A is located at the first operation position or the second operation position, that is, when the motor 50 is in the released state, the light 20A is turned on in response to the trigger 7A being pulled a first amount. When the motor 50 is in the released state, the motor 50 is driven in response to the trigger 7A being pulled a second amount. The second amount is greater than the first amount. When the trigger 7A is pulled by the second amount or more in the released state of the motor 50, a command value for the rotation speed of the motor 50 is set in response to the amount of pulling. As the amount of pulling increases, the command value for the rotation speed is set to a larger value.

[0048] In addition, the trigger 7A is configured such that when the forward / reverse switch 10A is in the neutral position, that is, when the motor 50 is in the locked state, the trigger 7A can be pulled a first amount but cannot be pulled a second amount. When the motor 50 is in the locked state, the light 20A is turned on in response to the trigger 7A being pulled a second amount. Therefore, when the motor 50 is in the locked state, the impact driver 1A can be used as a lighting device. The state in which the light 20A is turned on while the motor 50 is locked is referred to as a light mode on state, and the other states are referred to as a light mode off state. In this embodiment, the trigger 7A corresponds to an example of a first operating unit of the present disclosure.

[0049] The operation panel 11 is provided on the upper surface of the battery mounting section 8A. The operation panel 11 includes an impact / light switch 12, a special switch 13, an operation mode notification section 14, and a light mode notification section 15. The impact / light switch 12 and the special switch 13 are button switches. Each time the special switch 13 is pressed, multiple types of operation modes are switched in a predetermined order.

[0050] The strike / light switch 12 is operated by a user to switch the striking force. For example, the strike / light switch 12 is operated by a user to switch the striking force in the order of small, medium, and large. In detail, each time the strike / light switch 12 is pressed briefly, the striking force is switched in a predetermined order. A short press corresponds to an operation in which the strike / light switch 12 is pressed for a time shorter than a predetermined time.

[0051] The strike / light switch 12 is operated by the user to enable or disable the illumination of the light 20A in the light mode off state. When the illumination of the light 20A is disabled, the light 20A cannot be illuminated even by pulling the trigger 7A in the released state of the motor 50. When the illumination of the light 20A is enabled, the light 20A can be illuminated by pulling the trigger 7A in the released state of the motor 50. Even if the illumination of the light 20A is disabled, the light 20A can be illuminated by pulling the trigger 7A in the locked state of the motor 50. In detail, each time the strike / light switch 12 is pressed and held, the illumination of the light 20A in the released state of the motor 50 is switched between enabled and disabled. The long press corresponds to an operation in which the strike / light switch 12 is pressed and held for longer than a predetermined time. In this embodiment, the strike / light switch 12 corresponds to an example of a third operation unit of the present disclosure.

[0052] The operation mode notification unit 14 includes a plurality of LEDs and notifies the current operation mode. Specifically, the number of LEDs that are turned on, the positions of the LEDs that are turned on, the color of the LEDs, etc. are changed according to the operation mode.

[0053] The light mode notification unit 15 is the same member as the operation mode notification unit 14, and the operation mode notification unit 14 is also used as the light mode notification unit 15. When the light 20A is on while the motor 50 is locked, the light mode notification unit 15 turns off all LEDs to notify that the light 20A is on while the motor 50 is locked.

[0054] The light mode notification unit 15 may be provided separately from the operation mode notification unit 14. In this case, the light mode notification unit 15 includes one LED, and when the light 20A is turned on in the light mode on state, the LED is turned on to notify that the light 20A is turned on in the light mode on state.

[0055] Next, a reciprocating saw 1B will be described with reference to Fig. 2 as another example of the electric work machine 1 according to this embodiment. The reciprocating saw 1B is used to cut a workpiece. The reciprocating saw 1B includes a housing 4B, a hand grip 5B, a blade holder 6B, a trigger 7B, a battery mounting portion 8B, a mode change switch 10B, and a light 20B.

[0056] The housing 4B is configured to have a cylindrical shape that extends in the vertical direction and has an upper portion that protrudes forward. The housing 4B accommodates the motor 50 and the like. The hand grip 5B is configured in a columnar shape extending in the vertical direction, and its upper part is connected to the upper part of the housing 4B. The hand grip 5B is disposed at the rear of the housing 4B with a gap for the user's hand to enter. The hand grip 5B is configured so that the user can hold it with one hand.

[0057] The battery attachment portion 8B is connected to the lower side of the housing 4B and the hand grip 5B. The battery pack 3 is detachably attached to the battery attachment portion 8B. The blade holder 6B is provided in a portion that protrudes forward of the housing 4B, and holds a blade (not shown). When the motor 50 rotates, the blade held by the blade holder 6B reciprocates back and forth.

[0058] Light 20B is provided on the upper part of blade holder 6B and illuminates the tip of the blade. The mode changeover switch 10B is provided on the upper part of the hand grip 5B. The mode changeover switch 10B is provided within reach of the hand holding the hand grip 5B. That is, the mode changeover switch 10B is disposed in a position where it can be operated by the hand holding the hand grip 5B. The mode changeover switch 10B only needs to be provided in a position where it can be operated by the hand holding the hand grip 5B, and may be provided on the lower part of the hand grip 5B or between the hand grip 5B and the battery mounting part 8B.

[0059] The mode changeover switch 10B is operated to switch between a plurality of operating modes of the reciprocating saw 1B. The mode changeover switch 10B is configured to be slidable between a first operating position and a second operating position, similar to the forward / reverse changeover switch 10A. When the mode changeover switch 10B is operated to the neutral position, the motor 50 is placed in a locked state, i.e., the light mode is on. When the mode changeover switch 10B is operated to the first operating position or the second operating position, the motor 50 is placed in a released state.

[0060] The trigger 7B is provided below the mode changeover switch 10B at the upper front side of the hand grip 5B. The trigger 7B is disposed in a position that allows it to be operated with the hand holding the hand grip 5B. Therefore, the user can operate the mode changeover switch 10B and the trigger 7B with the hand holding the hand grip 5B.

[0061] Like trigger 7A, trigger 7B is configured to drive motor 50 and also to turn on light 20B. When motor 50 is in a locked state, light 20B turns on in response to trigger 7B being pulled a second amount. When motor 50 is in a released state, light 20B turns on in response to trigger 7B being pulled a first amount. Also, when motor 50 is in a released state, motor 50 is driven in response to trigger 7B being pulled a second amount.

[0062] Next, a pin tucker 1C will be described with reference to Fig. 3 as yet another example of the electric working machine 1 according to this embodiment. The pin tucker 1C is used for driving pins into an object. The pin tucker 1C includes a housing 4C, a hand grip 5C, a trigger 7C, a battery mounting section 8C, a lock switch 10C, a magazine 81, and a gear housing 82.

[0063] The housing 4C is formed into a cylindrical shape extending in the vertical direction, and houses the motor 50 and the like. The hand grip 5C is configured in a columnar shape extending in the vertical direction and is disposed at the rear of the housing 4C with a gap for a user's hand to fit in. The hand grip 5C is configured so that the user can hold it with one hand.

[0064] The battery mounting section 8C is configured as a cylinder extending in the front-rear direction, and is connected to the lower side of the housing 4C and the hand grip 5C. The battery pack 3 is removably mounted to the battery mounting section 8C. The gear housing 82 is connected to the upper side of the housing 4C and the hand grip 5C, and houses the hammer driving mechanism. The magazine 81 is configured as a cylinder extending in the vertical direction, and is connected to the front end of the housing 4C. The magazine 81 houses a plurality of pins lined up in a vertical direction. The plurality of pins are housed in a state where they are biased from bottom to top by a spring. When the motor 50 rotates, the hammer of the hammer driving mechanism is driven forward, and the pins are ejected forward.

[0065] Light 20C is provided at the front end of gear housing 82 to illuminate an object. The lock switch 10C is provided between the hand grip 5C and the gear housing 82. The lock switch 10C is provided within reach of the hand holding the hand grip 5C. That is, the lock switch 10C is disposed in a position that can be operated by the hand holding the hand grip 5C. The lock switch 10C only needs to be provided in a position that can be operated by the hand holding the hand grip 5C, and may be provided on the hand grip 5C or between the hand grip 5C and the battery mounting section 8C.

[0066] The lock switch 10C is operated by a user to switch the motor 50 between a locked state and an unlocked state. Like the trigger 7A, the trigger 7C is configured to drive the motor 50 and also to turn on the light 20C. When the motor 50 is in a locked state, the light 20C turns on in response to the trigger 7C being pulled a second amount. When the motor 50 is in a released state, the light 20C turns on in response to the trigger 7C being pulled a first amount. Also, when the motor 50 is in a released state, the motor 50 is driven in response to the trigger 7C being pulled a second amount.

[0067] <1-2. Electrical configuration of electric work machine> Next, the electrical configuration of the electric working machine 1 will be described with reference to Fig. 4. Here, the electrical configuration will be described using an impact driver 1A as an example of the electric working machine 1.

[0068] The impact driver 1A includes a work machine circuit 500, a switch unit 175, a motor 50, and a position sensor 51. The motor 50 is a brushless motor equipped with three-phase coils, namely, U-phase, V-phase, and W-phase. The position sensor 51 includes three Hall ICs arranged corresponding to the stators of the respective phases of the motor 50. The Hall ICs output a rotation detection signal to a position detection circuit 52 every time the rotor of the motor 50 rotates a predetermined angle.

[0069] The switch unit 175 includes a power switch 71, a speed setting unit 72, a forward rotation switch 101, and a reverse rotation switch 102. The power switch 71 turns on when the pulled amount of the trigger 7A is equal to or greater than the first pulled amount, and outputs an ON signal to the power switch determination unit 110. The power switch 71 turns off when the pulled amount of the trigger 7A is less than the first pulled amount, and outputs an OFF signal to the power switch determination unit 110. The speed setting unit 72 includes a sliding resistor, and outputs a resistance value according to the pulled amount of the trigger 7A. For example, the speed setting unit 72 outputs a larger resistance value as the pulled amount increases.

[0070] The forward rotation switch 101 outputs a forward rotation ON signal when the forward / reverse switch 10A is in the first operation position, and outputs a forward rotation OFF signal when the forward / reverse switch 10A is in the second operation position or the neutral position. The reverse rotation switch 102 outputs a reverse rotation ON signal when the forward / reverse switch 10A is in the second operation position, and outputs a reverse rotation OFF signal when the forward / reverse switch 10A is in the first operation position or the neutral position.

[0071] The work machine circuit 500 includes a capacitor 31, a power supply circuit 32, a motor driver 33, a current detection circuit 34, a microcomputer 100, a position detection circuit 52, a first display circuit 21, and a second display circuit 22.

[0072] The power supply circuit 32 is connected to the battery pack 3. The capacitor 31 is connected between the battery pack 3 and the power supply circuit 32, and absorbs surge voltage from the input power input from the battery pack 3 to the work machine circuit 500. The power supply circuit 32 generates a predetermined power supply voltage Vcc from the input power from which the surge voltage has been absorbed, and supplies the power supply voltage Vcc to each circuit in the work machine circuit 500, such as the microcomputer 100.

[0073] The motor driver 33 is a three-phase full bridge circuit including three switching elements provided on the high side and three switching elements provided on the low side. The motor driver 33 is connected between the capacitor 31 and the motor 50, receives power from the battery pack 3, and passes a current through the windings of each phase of the motor 50. Each switching element of the motor driver 33 is turned on or off in response to a control command output from the microcomputer 100, which will be described later.

[0074] The current detection circuit 34 detects the value of the current flowing through the motor 50, and outputs a detection signal corresponding to the detected current value to a PWM generation unit 160 of the microcomputer 100, which will be described later. The position detection circuit 52 detects the rotational position of the rotor of the motor 50 based on the rotation detection signal input from the position sensor 51. The position detection circuit 52 outputs to the microcomputer 100 a position signal corresponding to the detected rotational position.

[0075] The first display circuit 21 turns on or off the LED of the light 20A in accordance with a command from a light control unit 190 of the microcomputer 100, which will be described later. The second display circuit 22 turns on or off the LEDs of the operation mode notification section 14 and the light mode notification section 15 in accordance with a command from a display control section 200 of the microcomputer 100, which will be described later.

[0076] The microcomputer 100 includes a CPU 100a, a ROM 100b, a RAM 100c, an I / O, and the like. Various functions of the microcomputer 100 are realized by the CPU 100a executing a program stored in a non-transient real recording medium. In this embodiment, the ROM 100b corresponds to the non-transient real recording medium. The execution of this program executes a method corresponding to the program. Note that some or all of the functions executed by the CPU 100a may be configured in hardware form using one or more ICs, etc. Also, the microcomputer 100 may be configured from a single microcomputer, or may be configured from multiple microcomputers. Also, the ROM 100b stores control characteristics, etc. of the motor 50 in each operation mode.

[0077] Specifically, the microcomputer 100 has, as various functions, a power switch determination unit 110, a speed command determination unit 120, a forward / reverse determination unit 130, a lock determination unit 140, a mode determination unit 150, a pulse width modulation generation unit (PWM generation unit) 160, a drive control unit 170, a rotation speed calculation unit 180, a light control unit 190, and a display control unit 200.

[0078] The power switch determination unit 110 determines whether the power is on or off depending on whether the input signal from the power switch 71 is an on signal or an off signal. Then, the power switch determination unit 110 outputs the determination result of whether the power is on or off to the PWM generation unit 160.

[0079] The speed command determination unit 120 determines the speed command value specified by the user according to the resistance value input from the speed setting unit 72. In detail, when the resistance value is less than the resistance threshold, the speed command determination unit 120 determines the speed command value to be 0. The resistance threshold corresponds to the resistance value corresponding to the first pull amount. When the resistance value is equal to or greater than the resistance threshold, the speed command determination unit 120 determines the speed command value to be increased with the increase in the resistance value. Then, the speed command determination unit 120 outputs the determined speed command value to the PWM generation unit 160.

[0080] When a forward rotation on signal is input from the forward rotation switch 101, the forward / reverse determination unit 130 determines that the rotation direction instructed by the user is forward rotation, and outputs the determination result to the drive control unit 170. When a reverse rotation on signal is input from the reverse rotation switch 102, the forward / reverse determination unit 130 determines that the rotation direction instructed by the user is reverse rotation, and outputs the determination result to the drive control unit 170. When a forward rotation off signal is input from the forward rotation switch 101 and a reverse rotation off signal is input from the reverse switch 102, the forward / reverse determination unit 130 determines that the rotation direction instructed by the user is neutral, and outputs the determination result to the lock determination unit 140.

[0081] When a determination result indicating neutral is input from the forward / reverse determination unit 130, the lock determination unit 140 determines to put the motor 50 into a locked state, and outputs the determination result of the locked state to the PWM generation unit 160 and the light control unit 190.

[0082] The mode determination unit 150 determines the operation mode of the motor 50 based on input signals from the mode changeover switch 9 , the impact / light switch 12 , and the special switch 13 . The rotation speed calculation unit 180 calculates the rotation speed of the motor 50 based on the position signal input from the position detection circuit 52 , and outputs the calculation result to the PWM generation unit 160 .

[0083] The PWM generating unit 160 generates a PWM signal for driving the motor 50, based on the determination results from the power switch determining unit 110, the speed command determining unit 120, the lock determining unit 140, and the mode determining unit 150, the calculation result from the rotation speed calculating unit 180, and the detection signal from the current detecting circuit 34. The PWM generating unit 160 outputs the generated PWM signal to the drive control unit 170.

[0084] The drive control unit 170 generates control commands to turn on or off each switching element included in the motor driver 33 based on the judgment result from the forward / reverse judgment unit 130 and the PWM signal from the PWM generation unit 160, and outputs the generated control commands to the motor driver 33.

[0085] The light control unit 190 controls the turning on and off of the light 20A via the first display circuit 21 based on the determination results of the power switch determination unit 110, the lock determination unit 140, and the mode determination unit 150. That is, the light control unit 190 controls the turning on and off of the light 20A based on the operation of the trigger 7A, the locked or unlocked state of the motor 50, and whether the lighting of the light 20A is enabled or disabled.

[0086] The display control unit 200 controls the notification by the operation mode notification unit 14 and the light mode notification unit 15 via the second display circuit 22 based on the determination result of the mode determination unit 150 and the control information of the light control unit 190. That is, the display control unit 200 controls the notification by the operation mode notification unit 14 according to the operation mode determined by the mode determination unit 150. Furthermore, when the light mode is on, the display control unit 200 causes the light mode notification unit 15 to notify that the light 20A is on while the motor 50 is locked.

[0087] 10 and 11 show time charts according to a reference example. In FIG. 10, the motor 50 is in a released state from time t110 to time t116, and in a locked state from time t116 to time t121. In addition, the light 20A is enabled (i.e., the light function is on) from time t110 to time t121. When the power switch 71 is turned on at time t110, t113, and t117, the light 20A is turned on. When the power switch 71 is turned off at time t111, t114, and t118, the light 20A is turned on continuously for a certain lighting time T0 from time t111, t114, and t118. Then, the light 20A is turned off at time t112, t115, and t119. In this embodiment, the time from when the power switch 71 is turned off after the light 20A is turned on to when the light 20A is turned off is referred to as the lighting time. Note that the time from when the light 20A is turned on to when the light 20A is turned off may also be referred to as the lighting time.

[0088] In FIG. 11, the motor 50 is in the released state from time t130 to time t136, and is in the locked state from time t136 onward. At time t130, the illumination of the light 20A is set to be enabled. When the power switch 71 is turned on at time t130, the light 20A is illuminated. When the power switch 71 is turned off at time t131, the impact / light switch 12 is pressed at time t132 before a certain illumination time T0 has elapsed from time t131, and it is determined at time t133 that the impact / light switch 12 has been pressed and held. Accordingly, at time t133, the illumination of the light 20A is set to be disabled (i.e., the light function is off), and the light 20A is turned off before the illumination time T0 has elapsed.

[0089] Furthermore, at time t139, the power switch 71 is turned on. At this time, the illumination of the light 20A is set to be disabled, so the light 20A does not illuminate. After the power switch 71 is turned off at time t140, the impact / light switch 12 is pressed at time t141, and it is determined at time t142 that the impact / light switch 12 has been pressed and held. Accordingly, the illumination of the light 20A is set to be enabled at time t142. Then, since the time from time t140 to time t142 is shorter than the illumination time T0, the light 20A is illuminated at time t142, and is turned off at time t143. The period from time t140 to time t143 corresponds to the illumination time T0.

[0090] Therefore, in the reference example, when the trigger 7A is pulled, the light 20A is turned on for a certain period of time regardless of whether the motor 50 is in the released state or the locked state. That is, in the reference example, the lighting time of the light 20A when the electric work machine is used as a lighting device is the same as the lighting time of the light 20A when working with the electric work machine.

[0091] Furthermore, in the reference example, when the illumination of the light 20A is set to disabled, the light 20A does not illuminate, regardless of whether the motor 50 is in the unlocked state or the locked state. That is, in the reference example, when the electric operating machine is used as a lighting device, the light 20A cannot be illuminated unless the illumination of the light 20A is set to enabled.

[0092] In contrast to this, in this embodiment, the light control unit 190 changes the lighting time of the light 20A when the motor 50 is in the locked state from the lighting time of the light 20A when the motor 50 is in the unlocked state.

[0093] Furthermore, in this embodiment, regardless of whether illumination of the light 20A is set to enabled or disabled, when the motor 50 is in a locked state, the light control unit 190 turns on the light 20A when the trigger 7A is pulled. Hereinafter, first to fifth examples according to this embodiment will be described with reference to Figs. 5 to 9.

[0094] FIG. 5 shows a first example according to this embodiment. In FIG. 5, the motor 50 is in a released state from time t10 to time t16, and is in a locked state from time t16 onward. When the motor 50 is in a released state, the light 20A is turned on when the power switch 71 is turned on at time t10. When the power switch 71 is turned off at time t11, the light 20A is turned on continuously from time t11 for a first lighting time T1. Then, the light 20A is turned off at time t12. The light 20A is turned on at a first brightness from time t10 to time t12.

[0095] Furthermore, when the power switch 71 is turned on at time t17 while the motor 50 is in the locked state, the light 20A is turned on. Then, when the power switch 71 is turned off at time t18, the light 20A continues to be turned on for the second lighting time T2 from time t18. Then, at time t19, the light 20A is turned off. From time t17 to time t19, the light 20A is turned on at the second brightness.

[0096] The second lighting time T2 is different from the first lighting time T1. In this embodiment, the second lighting time T2 is longer than the first lighting time T1. This allows the lighting time of the light 20A to be extended when the impact driver 1A is not used for work and is used as a lighting device. The first lighting time T1 and the second lighting time T2 are set in advance and stored in the ROM 100b. In addition, in the present disclosure, the second lighting time T2 does not necessarily have to be set longer than the first lighting time T1, and the second lighting time T2 may be set shorter than the first lighting time T1.

[0097] Moreover, the second luminance is different from the first luminance. Specifically, when the light control unit 190 turns on the light 20A at the first luminance, the light control unit 190 outputs a first PWM signal having a first duty ratio to the light 20A. When the light control unit 190 turns on the light 20A at the second luminance, the light control unit 190 outputs a second PWM signal having a second duty ratio different from the first duty ratio to the light 20A. In this embodiment, the second luminance is higher than the first luminance. That is, the light control unit 190 makes the second duty ratio larger than the first duty ratio. Thereby, when the impact driver 1A is used as a lighting device, the luminance of the light 20A can be increased. The first luminance and the second luminance are set in advance and stored in the ROM 100b. Note that, in the present disclosure, the second luminance does not necessarily have to be different from the first luminance, and the second luminance may be the same as the first luminance.

[0098] Next, a second example according to this embodiment is shown in FIG. 6. In FIG. 6, the motor 50 is in a released state from time t30 to time t36, and is in a locked state from time t36 onward. The period from time t30 to time t36 is the same as the period from time t10 to time t16 shown in FIG. 5. When the motor 50 is in a locked state, the light 20A is turned on when the power switch 71 is turned on at time t37. When the power switch 71 is turned off at time t38, the light 20A is turned off at time t39 before the second lighting time T2 has elapsed since time t38. That is, when the user is using the impact driver 1A as a lighting device, the user can immediately turn off the light 20A by pulling the trigger 7A again before the second lighting time T2 has elapsed.

[0099] If the trigger 7A is pulled again before the second lighting time T2 has elapsed, the lighting time of the light 20A may be changed from the lighting time when the trigger 7A is not pulled again, without immediately turning off the light 20A. Specifically, when the power switch 71 is turned on at time t39 and then turned off at time t40, the light 20A may be kept on from time t40 until the third lighting time T3 has elapsed.

[0100] The third lighting time T3 may be any value. If the third lighting time T3 is set to 0 seconds, the light 20A is immediately turned off when the power switch 71 is turned on at time t39. The third lighting time T3 is preset and stored in the ROM 100b.

[0101] Next, a third example according to this embodiment is shown in Fig. 7. In Fig. 7, the motor 50 is in the released state from time t50 to time t55, and is in the locked state from time t55 to time t59. After time t59, the motor 50 is in the released state.

[0102] When the power switch 71 is turned on at time t53 in the released state of the motor 50, the light 20A is turned on, and the power switch 71 is turned off at time t54. Before the first lighting time T1 has elapsed from time t54, at time t55, the reverse switch 102 is turned off, and the motor 50 is in the locked state. However, the light mode is not turned on, and the lighting time is not changed. The light mode is turned on in response to the power switch 71 being turned on while the motor 50 is locked. When the motor 50 is on while the motor 50 is released, even if the motor 50 is locked, the light mode is not turned on, and the lighting time in the released state is maintained. Then, the lighting of the light 20A continues until time t56, at which time the light 20A is turned off. The time from time t54 to time t56 corresponds to the first lighting time T1.

[0103] When the power switch 71 is turned on at time t57 while the motor 50 is in the locked state, the light 20A is turned on, and the power switch 71 is turned off at time t58. Before the second lighting time T2 has elapsed from time t58, at time t59, the forward rotation switch 101 is turned on and the lock of the motor 50 is released. Accordingly, at time t59, the light mode is changed from on to off, and the lighting time of the light 20A is changed.

[0104] Specifically, the light 20A is turned on for a fourth lighting time T4 from time t59, and is turned off at time t60. The fourth lighting time T4 may be any value, and may be the same value as the first lighting time T1. The fourth lighting time T4 is preset and stored in the ROM 100b.

[0105] Next, a fourth example according to this embodiment is shown in FIG. 8. In FIG. 8, the motor 50 is in a released state from time t70 to time t76, and is in a locked state after time t76. When the power switch 71 is turned on at time t77 in the locked state of the motor 50, the light 20A is turned on. Then, at time t78, it is determined that the power switch 71 has been pressed and held down, and the light 20A is turned off. That is, when the user uses the impact driver 1A as a lighting device, the user can immediately turn off the light 20A in response to the determination that the power switch 71 has been pressed and held down by continuing to pull the trigger 7A for longer than a predetermined time.

[0106] Note that, in response to determining that the power switch 71 has been pressed and held while the motor 50 is in the locked state, the lighting time of the light 20A may be changed without immediately turning off the light 20A. Specifically, in response to the power switch 71 being turned off at time t79, the light 20A may be turned on for a fifth lighting time T5 from time t79.

[0107] The fifth lighting time T5 may be any value. If the fifth lighting time T5 is set to zero, the light 20A is immediately turned off when it is determined at time t78 that the power switch 71 has been pressed and held down. The fifth lighting time T3 is preset and stored in the ROM 100b.

[0108] Next, a fifth example according to this embodiment is shown in Fig. 9. In Fig. 9, the motor 50 is in the released state from time t90 to time t96, and is in the locked state from time t96 to time t102. After time t102, the motor 50 is in the released state.

[0109] With the motor 50 in the released state, when the power switch 71 is turned on at time t90, the light 20A is turned on, and the power switch 71 is turned off at time t91. Before the first lighting time T1 has elapsed from time t91, the impact / light switch 12 is pressed at time t92, and a long press of the impact / light switch 12 is determined at time t93. Accordingly, the lighting of the light 20A switches from enabled to disabled, and the light 20A is turned off at time t93.

[0110] When the motor 50 is in a locked state and the illumination of the light 20A is disabled, the light 20A is illuminated when the power switch 71 is turned on at time t97. When the power switch 71 is turned off at time t98, the light 20A is illuminated from time t98 until the second illumination time T2 has elapsed, and then the light 20A is turned off at time t101. In other words, when the motor 50 is in a locked state, the light 20A is illuminated even if the illumination of the light 20A is disabled.

[0111] Between time t98 and time t101, at time t99, the impact / light switch 12 is pressed, and at time t100, a long press of the impact / light switch 12 is determined, but between time t99 and time t101, since the light mode is on, the illumination of the light 20A does not switch from disabled to enabled and remains disabled. In other words, while the light mode is on, the illumination of the light 20A cannot be switched from disabled to enabled or from enabled to disabled.

[0112] At time t102, the forward rotation switch 101 is turned on, unlocking the motor 50. In a state in which the motor 50 is in the unlocked state and illumination of the light 20A is set to disabled, the power switch 71 is turned on at time t103, but the light 20A does not illuminate.

[0113] <2. Processing> <2-1. Overall processing> The overall process executed by the microcomputer 100 according to this embodiment will be described with reference to the flowchart of Fig. 12. The microcomputer 100 starts this process when started up, and repeatedly executes this process at a predetermined cycle.

[0114] First, in S10, it is determined whether or not the impact / light switch 12 has been pressed. If it is determined that the impact / light switch 12 has been pressed, the process proceeds to S20, and if it is determined that the impact / light switch 12 has not been pressed, the process proceeds to S60.

[0115] In S20, it is determined whether or not the impact / light switch 12 has been pressed and held down. If it is determined that the impact / light switch 12 has not been pressed and held down (i.e., has been pressed for a short period of time), the process proceeds to S30, and if it is determined that the impact / light switch 12 has been pressed and held down, the process proceeds to S40.

[0116] In S30, the operation mode of the motor 50 is changed, and the process proceeds to S60. In S40, it is determined whether the light mode is on or not. If it is determined that the light mode is on, the process proceeds to S60, and if it is determined that the light mode is off, the process proceeds to S50.

[0117] In S50, the setting of enabling or disabling the illumination of the light 20A is switched by pressing and holding the strike / light switch 12 while the light mode is off. That is, if the illumination of the light 20A is set to be enabled, it is changed to be disabled, and if the illumination of the light 20A is set to be disabled, it is changed to be enabled. Then, the process proceeds to S60.

[0118] Next, in S60, it is determined whether or not a forward rotation ON signal is being output from the forward rotation switch 101. If it is determined that a forward rotation ON signal is being output from the forward rotation switch 101, the process proceeds to S70. In S70, it is determined that the position of the forward / reverse switch 10A is the forward rotation position, and the process proceeds to S110.

[0119] On the other hand, if it is determined in S60 that a forward rotation OFF signal is being output from the forward rotation switch 101, the process proceeds to S80. In S80, it is determined whether or not a reverse rotation ON signal is being output from the reverse rotation switch 102. If it is determined that a reverse rotation ON signal is being output from the reverse rotation switch 102, the process proceeds to S90. In S90, it is determined that the position of the forward / reverse switch 10A is in the reverse position, and the process proceeds to S110.

[0120] On the other hand, if it is determined in S80 that the reverse rotation off signal is being output from the reverse rotation switch 102, it is determined that the forward / reverse switch 10A is in the neutral position, and the process proceeds to S110. In S110, it is determined whether the forward / reverse switch 10A is in the neutral position based on the results of the determinations in S70, S90, and S100. If it is determined in S110 that the forward / reverse switch 10A is in the forward rotation position or the reverse rotation position, the process proceeds to S120. In S120, it is determined that the motor 50 is in the released state, and the process proceeds to S140.

[0121] On the other hand, if it is determined in S110 that the forward / reverse switch 10A is in the neutral position, the process proceeds to S130. In S130, it is determined that the motor 50 is in a locked state, and the process proceeds to S140.

[0122] In S140, it is determined whether or not the trigger 7A has been operated, that is, whether or not an ON signal has been output from the power switch 71. If it is determined in S140 that the trigger 7A has not been operated, the process proceeds to S150. In S150, it is determined that the power switch 71 is OFF, and the process proceeds to S300.

[0123] On the other hand, if it is determined in S140 that the trigger 7A has been operated, the process proceeds to S160. In S160, it is determined that the power switch 71 is on, and the process proceeds to S170.

[0124] In S170, it is determined whether or not a long press of the power switch 71 has been detected. That is, it is determined whether or not it has been detected that the trigger 7A has been pulled by a first pulling amount or more for a longer period than a predetermined time. If it is determined in S170 that a long press of the power switch 71 has been detected, the process proceeds to S180, and if it is determined that a long press of the power switch 71 has not been detected, the process proceeds to S190.

[0125] In S180, it is determined that the power switch 71 has been pressed and held down, and the process proceeds to S190. In S190, it is determined whether the trigger 7A has changed from off to on. That is, it is determined whether the power switch 71 has changed from off to on. If it is determined in S190 that the trigger 7A has not changed from off to on, the process proceeds directly to S300. If it is determined in S190 that the trigger 7A has changed from off to on, the process proceeds to S200.

[0126] In S200, it is determined that the power switch 71 has been switched from OFF to ON, and the process proceeds to S300. In S300, a light process is executed to control the lighting of the light 20A. The light process will be described in detail later.

[0127] <2-2. Write processing> Next, the write process executed by the microcomputer 100 according to this embodiment will be described with reference to FIGS. 13A to 13D.

[0128] First, in S310, it is determined whether the light 20A is on or not. If it is determined that the light 20A is on, the process proceeds to S320, and if it is determined that the light 20A is off, the process proceeds to S610.

[0129] In S320, it is determined whether the power switch 71 is on or not based on the determination results in S150 and S160. If the power switch 71 is off, the process proceeds to S330, and if the power switch 71 is on, the process proceeds to S340.

[0130] In S330, a count is incremented. This count is for measuring the lighting time, and incrementing of the count starts when the power switch 71 is switched from on to off. Then, the process proceeds to S380.

[0131] In S340, it is determined whether or not the power switch 71 is pressed for a long time based on the determination result in S180. If the power switch 71 is not pressed for a long time, the process proceeds to S360, and if the power switch 71 is pressed for a long time, the process proceeds to S350.

[0132] In S350, it is determined whether or not the motor 50 is in a locked state based on the results of the determinations in S120 and S130. If the motor 50 is in an unlocked state, the process proceeds to S360, and if the motor 50 is in a locked state, the process proceeds to S370.

[0133] In S360, the count is cleared. That is, the count is not incremented until the duration of power switch 71 being on exceeds the predetermined time for determining a long press, or if the motor 50 is in the released state and a long press is determined. Then, the process proceeds to S380. In S370, the count is incremented. That is, the time from the point when the duration of the power switch 71 being on exceeds a predetermined time is measured. The incrementing of the count here corresponds to measuring the fifth lighting time in the fourth example shown in FIG.

[0134] Next, in S380, it is determined whether the light mode is on or not. That is, it is determined whether the light 20A is turned on in the light mode or not. If it is determined in S380 that the light mode is off, the process proceeds to the process of S390.

[0135] In S390, it is determined whether the power switch 71 has been switched from off to on, based on the presence or absence of the determination result in S200. That is, it is determined whether the power switch 71 has been switched from off to on when the light mode is off. If it is determined that the power switch 71 has not been switched from off to on, the process proceeds to S560. If it is determined that the power switch 71 has been switched from off to on, the process proceeds to S400.

[0136] In S400, it is determined whether or not the motor 50 is in a locked state based on the results of the determinations in S120 and S130. If it is determined in S400 that the motor 50 is in a released state, the process proceeds to S560. In this case, the set illumination time is not changed.

[0137] On the other hand, if it is determined in S400 that the motor 50 is in a locked state, the process proceeds to S410. In S420, the light mode is set from off to on. That is, if it is determined that the motor 50 changes from the unlocked state to the locked state and the power switch 71 is switched from off to on while the motor 50 is in the unlocked state and the light 20A is on, the light mode is changed from off to on. Accordingly, in S420, the second lighting time T2 is set as the lighting time. The lighting time set here corresponds to the lighting time of the light 20A from the time when the power switch 71 is next changed from on to off. FIG. 14 shows an example of the first to fifth lighting times T1 to T5. In this embodiment, the second lighting time T2 is set to one hour.

[0138] Next, in S430, the count is cleared, and the process proceeds to S560. On the other hand, if it is determined in S380 that the light mode is on, the process proceeds to S440. In S440, it is determined whether or not the power switch 71 has been pressed and held down based on the presence or absence of the determination result in S180. If it is determined in S440 that the power switch 71 has been pressed and held down, the process proceeds to S450.

[0139] In S450, the light mode is turned off. That is, as in the fourth example shown in Fig. 8, when the light 20A is turned on while the motor 50 is locked, if the power switch 71 is pressed and held down, the light mode is changed from on to off. Next, in S460, a fifth lighting time T5 is set as the lighting time as in the fourth example shown in Fig. 8. The lighting time set here corresponds to the lighting time of the light 20A from the point when the power switch 71 next changes from on to off. In this embodiment, the fifth lighting time T5 is set to 0 seconds.

[0140] Next, in S470, the count is cleared, and the process proceeds to S560. On the other hand, if it is determined in S440 that the power switch 71 has not been pressed long, the process proceeds to S480. In S480, it is determined whether the motor 50 is in a locked state based on the determination results of S120 and S130. If it is determined in S480 that the motor 50 is in a released state, the process proceeds to S490.

[0141] In S490, the light mode is set to OFF. That is, as in the third example shown in Fig. 7, when the light 20A is turned on while the motor 50 is locked, if the motor 50 is unlocked, the light mode is changed from ON to OFF.

[0142] Next, in S500, a fourth lighting time T4 is set as the lighting time as in the third example shown in Fig. 7. The lighting time set here corresponds to the lighting time of the light 20A from the point when the power switch 71 next changes from on to off. In this embodiment, the fourth lighting time T4 is the same as the first lighting time T1, and is set to 10 seconds.

[0143] Next, in S510, the count is cleared, and the process proceeds to S560. On the other hand, if it is determined in S480 that the motor 50 is in a locked state, the process proceeds to S520. In S520, it is determined whether or not the power switch 71 has been switched from off to on, based on the presence or absence of the determination result in S200. If it is determined that the power switch 71 has been switched from off to on, the process proceeds to S530, and if it is determined that the power switch 71 has not been switched from off to on, the process proceeds to S560.

[0144] In S530, the light mode is set to OFF. That is, as in the second example shown in Fig. 6, when the light 20A is turned on while the motor 50 is locked, if the trigger 7A is operated again, the light mode is changed from ON to OFF.

[0145] Next, in S540, the third lighting time T3 is set as the lighting time as in the second example shown in Fig. 6. The lighting time set here corresponds to the lighting time of the light 20A from the point when the power switch 71 next changes from on to off. In this embodiment, the third lighting time T3 is set to 0 seconds.

[0146] Next, in S550, the count is cleared, and the process proceeds to S560. In S560, it is determined whether the light mode is on or not. If it is determined that the light mode is off, the process proceeds to S570, and if it is determined that the light mode is on, the process proceeds to S580.

[0147] In S570, as shown in FIG. 15, the light 20A is turned on at a first brightness. In S580, the light 20A is turned on at a second brightness, as shown in Fig. 15. The second brightness is brighter than the first brightness.

[0148] Next, in S590, it is determined whether the count is greater than the set lighting time. If the count is less than or equal to the lighting time, this process ends and the process is resumed from S10. If the count is greater than the lighting time, the process proceeds to S600.

[0149] In S600, the light 20A is turned off, the process ends temporarily, and the process is resumed from S10. Also, if it is determined in S310 that the light 20A is turned off, the process proceeds to S610.

[0150] In S610, it is determined whether or not the power switch 71 has been switched from off to on, based on the presence or absence of the determination result in S200. If it is determined that the power switch 71 has not been switched from off to on, this process is temporarily terminated and resumed from the process of S10. If it is determined that the power switch 71 has been switched from off to on, the process proceeds to S620.

[0151] In S620, it is determined whether or not the motor 50 is in a locked state based on the determination results of S120 and S130. If it is determined that the motor 50 is in a locked state, the process proceeds to S630.

[0152] On the S630, set light mode to on. Next, in S640, the second lighting time T2 is set as the lighting time as in the first example shown in Fig. 5. The lighting time set here corresponds to the lighting time of the light 20A from the point when the power switch 71 next changes from on to off. In this embodiment, the second lighting time T2 is set to one hour.

[0153] Next, in S680, the light 20A is turned on at the second brightness. Next, in S690, the count is cleared, the process ends once, and the process is resumed from S10.

[0154] On the other hand, if it is determined in S620 that the motor 50 is in the released state, the process proceeds to S650. On the S650, set Light Mode to Off.

[0155] Next, in S660, it is determined whether or not the illumination of the light 20A is enabled. If it is determined that the illumination of the light 20A is disabled, this process is temporarily terminated and the process is resumed from the process of S10. If it is determined that the illumination of the light 20A is enabled, the process proceeds to S670.

[0156] In S670, the first lighting time T1 is set as the lighting time as in the first example shown in Fig. 5. The lighting time set here corresponds to the lighting time of the light 20A from the point when the power switch 71 next changes from on to off. In this embodiment, the first lighting time T1 is set to 10 seconds.

[0157] Next, in S685, the light 20A is turned on at a first brightness. Next, in S690, the count is cleared, the process ends once, and the process is resumed from S10.

[0158] <3.Effects> According to the present embodiment described above, the following effects can be obtained. (1) When the motor 50 is in the released state, the first lighting time T1 is set as the lighting time in response to pulling the trigger 7A. Also, when the motor 50 is in the locked state, the second lighting time T2 is set as the lighting time in response to pulling the trigger 7A. Therefore, the lighting time when the impact driver 1A is used as a lighting device can be changed from the lighting time when work can be performed with the electric work machine. Therefore, the light 20A can be effectively used with a simple operation.

[0159] (2) The trigger 7A and the forward / reverse switch 10A are located within reach of the user holding the hand grip 5A. Therefore, the user can operate the trigger 7A and the forward / reverse switch 10A with the hand holding the hand grip 5A. As a result, the user can easily control the illumination of the light 20A with the hand holding the hand grip 5A.

[0160] (3) By setting the second lighting time T2 longer than the first lighting time T1, the impact driver 1A can be more effectively used as a lighting device when the motor 50 is in the locked state. Also, when the motor 50 is in the unlocked state, the consumption of power from the battery pack 3 by the light 20A can be suppressed.

[0161] (4) When the trigger 7A is pulled again before the second lighting time T2 has elapsed, the lighting time is changed. That is, when the impact driver 1A is used as a lighting device, the lighting time can be changed with a simple operation. As a result, the convenience of the lighting device of the impact driver 1A can be improved.

[0162] (5) In response to the trigger 7A being pulled again before the second lighting time T2 has elapsed, the light 20A is immediately turned off. Therefore, when the impact driver 1A is used as a lighting device, the light 20A can be turned off whenever the user desires.

[0163] (6) If the release state of the motor 50 is detected before the second lighting time T2 has elapsed, the lighting time is changed. That is, when the impact driver 1A is being used as a lighting device, if the use of the impact driver 1A as a lighting device is stopped, the lighting time of the light 20A can be changed.

[0164] (7) If the locked state of the motor 50 is detected before the first lighting time has elapsed, the lighting time is not changed. In other words, unless the trigger 7A is pulled while the motor 50 is locked, the impact driver 1A cannot be used as a lighting device.

[0165] (8) The lighting time is changed in response to the trigger 7A being pulled continuously before the second lighting time has elapsed. There may be a case where the motor 50 is locked and the impact driver 1A is stored in the case. At this time, something may come into contact with the trigger 7A of the impact driver 1A in the case, causing the trigger 7A to continue to be pulled. In that case, if the light 20A continues to be turned on until the second lighting time T2 has elapsed, the power consumption of the battery pack 3 by the light 20A increases. Therefore, by changing the lighting time in response to the trigger 7A being pulled continuously before the second lighting time T2 has elapsed, the lighting time set in response to the user's unintended operation of the trigger 7A can be appropriately changed.

[0166] (9) In response to the trigger 7A being pulled continuously before the second illumination time T2 has elapsed, the light 20A is immediately turned off. This makes it possible to reduce power consumption of the battery pack 3 due to unintended operation of the trigger 7A by the user.

[0167] (10) Even if the illumination of the light 20A is set to be disabled, the light 20A can be turned on when the impact driver 1A is used as a lighting device. (11) When the impact driver 1A is used as a lighting device, the setting of whether the light 20A is turned on or off cannot be changed. This makes it possible to retain the setting of whether the light 20A is turned on or off from the previous unlocked state when the motor 50 is returned from the locked state to the unlocked state.

[0168] (12) The fact that the light 20A is on is notified while the locked state of the motor 50 is being detected. This allows the user to recognize that the time that the light 20A is on is different from the time when work can be performed with the impact driver 1A.

[0169] (13) By using the same notification unit to notify the user of the operating mode and to notify the user of the illumination of the light 20A, the number of parts and therefore the installation space required for the notification unit can be reduced. (14) The brightness when the impact driver 1A is used as a lighting device is different from the brightness when work can be performed with the impact driver 1A. Therefore, the light 20A can be used more efficiently.

[0170] (15) The rotation direction of the motor 50 can be switched by switching the forward / reverse switch 10A between a first operation position and a second operation position. Furthermore, the motor 50 can be locked by setting the forward / reverse switch 10A to the neutral position. In other words, the motor 50 can be locked using a switch for switching the rotation direction of the motor 50 without increasing the number of parts.

[0171] (16) When the motor 50 is in the released state, the light 20A can be turned on or the motor 50 can be driven depending on the pulling amount of the trigger 7A. (17) When the forward / reverse switch 10A is in the neutral position, the light 20A can be turned on by pulling the trigger 7A a first amount.

[0172] (Other embodiments) Although the embodiments for carrying out the present disclosure have been described above, the present disclosure is not limited to the above-described embodiments and can be carried out in various modified forms.

[0173] (a) In the above embodiment, the impact driver 1A is provided with two lights 20A, but the impact driver 1A may be provided with one light 20A, or may be provided with three or more lights. Also, the reciprocating saw 1B and the pin tacker 1C are provided with one light 20B, 20C, but they may be provided with two or more lights 20B, 20C. The electric work machine 1 may be provided with any number of lights, one or more.

[0174] (b) In the above embodiment, the impact driver 1A, the reciprocating saw 1B, and the pin tacker 1C are shown as the electric working machine 1, but the electric working machine of the present disclosure is not limited to these. Any electric working machine may be used as long as it includes a light, a motor, a first operating unit that is operated to drive the motor and to turn on the light, and a second operating unit that locks the motor in a non-driven state.

[0175] (c) Multiple functions possessed by one component in the above embodiments may be realized by multiple components, or one function possessed by one component may be realized by multiple components. Also, multiple functions possessed by multiple components may be realized by one component, or one function realized by multiple components may be realized by one component. Also, part of the configuration of the above embodiments may be omitted. Also, at least part of the configuration of the above embodiments may be added to or substituted for the configuration of another of the above embodiments.

[0176] (d) In addition to the electric work machine described above, the present disclosure can be realized in various forms, such as a system that includes the electric work machine as a component, a program for causing a microcomputer to function as the electric work machine, a non-transient physical recording medium such as a semiconductor memory on which this program is recorded, and a method for controlling lighting for an electric work machine. [Explanation of symbols]

[0177] 1...Electric work machine, 1A...Impact driver, 1B...Reciprocating saw, 1C...Pin tacker, 3...Battery pack, 4A, 4B, 4C...Housing, 5A, 5B, 5C...Hand grip, 7A, 7B, 7C...Trigger, 8A, 8B, 8C...Battery mounting section, 9, 10B...Mode change switch, 10A...Forward / reverse change switch, 10C...Lock switch, 11...Operation panel, 12...Impact / light switch, 13...Special switch, 14...Operation mode notification section, 15...Light mode notification section, 20A, 20B, 20C ...light, 50...motor, 82...gear housing, 100...microcomputer, 100a...CPU, 100b...ROM, 100c...RAM, 101...forward switch, 102...reverse switch, 110...power switch determination unit, 120...speed command determination unit, 130...forward / reverse determination unit, 140...lock determination unit, 150...mode determination unit, 160...PWM generation unit, 170...drive control unit, 175...switch unit, 180...rotational speed calculation unit, 190...light control unit, 200...display control unit, 500...work machine circuit.

Claims

1. A handheld electric work machine, a motor configured to generate a rotational force and drive the tool bit by the rotational force; Illuminators and A grip portion configured to be held by a user's hand; a first operation unit that is disposed within reach of the fingers of the user's hand holding the grip portion while holding the grip portion, and that drives the motor and turns on the illuminator; a second operation unit that is arranged within reach of the finger and that selects a first state in which the motor can be driven when the first operation unit is operated, or a second state in which the motor cannot be driven even when the first operation unit is operated; and a control unit configured to drive the motor and turn on the illuminator for a first period of time in response to the operation of the first operation unit when the first state is selected by the operation of the second operation unit, and to turn on the illuminator for a second period of time longer than the first period of time without driving the motor in response to the operation of the first operation unit when the second state is selected by the operation of the second operation unit. Electric work equipment.

2. the control unit is configured to, when the illuminator is turned on while the second state is selected by operation of the second operation unit, change a turn-on time of the illuminator from the second time in response to the first operation unit being operated again before the second time has elapsed. The electric operating machine according to claim 1 .

3. the control unit is configured to immediately turn off the illuminator in response to the first operation unit being operated again before the second time period has elapsed. The electric operating machine according to claim 2.

4. the control unit is configured to, when the illuminator is turned on while the second state is selected by operation of the second operation unit, change a turn-on time of the illuminator from the second time in response to the first state being selected by operation of the second operation unit before the second time has elapsed. The electric operating machine according to any one of claims 1 to 3.

5. the control unit is configured to, when the illuminator is turned on while the first state is selected by operation of the second operation unit, continue the first time as the illumination time even if the second state is selected by operation of the second operation unit before the first time has elapsed. The electric operating machine according to claim 4.

6. the control unit is configured to, when the illuminator is turned on while the second state is selected by operation of the second operation unit, change a turn-on time of the illuminator from the second time in response to continuous operation of the first operation unit before the second time has elapsed. The electric operating machine according to any one of claims 1 to 5.

7. The control unit is configured to immediately turn off the illuminator in response to the first operation unit being continuously operated before the second time period has elapsed. The electric operating machine according to claim 6.

8. Further comprising a third operating unit arranged within the reach and configured to be operated to enable or disable the illumination of the illuminator; The control unit is when disabling the illumination device is selected by operation of the third operation unit and the first state is selected by operation of the second operation unit, maintaining the illumination device turned off in response to the operation of the first operation unit; and when the third operation unit is operated to select disabling the illumination device and the second state is selected by operating the second operation unit, the illumination device is turned on in response to the operation of the first operation unit. The electric operating machine according to any one of claims 1 to 7.

9. the control unit is configured to prohibit a change in selection of whether to enable or disable the lighting of the illuminator in response to an operation of the third operation unit, when the illuminator is turned on while the second state is selected by the second operation unit. The electric operating machine according to claim 8.

10. Further comprising an alarm unit configured to notify that the illuminator is turned on while the second state is selected by operating the second operating unit. The electric operating machine according to any one of claims 1 to 9.

11. The motor is configured to operate in a plurality of operating modes; The notification unit is further configured to notify a current operation mode of the motor. The electric operating machine according to claim 10.

12. the illuminator is configured to illuminate at a first intensity and a second intensity different from the first intensity; The control unit is turning on the illuminator at the first luminance while the first state is selected by operating the second operating unit; and turning on the illuminator at the second luminance while the second state is selected by operation of the second operation unit. An electric operating machine according to any one of claims 1 to 11.

13. The second operating part is configured to be operated to any one of a first operating position, a second operating position, and a neutral position corresponding to an intermediate position between the first operating position and the second operating position, The control unit is When the second operating unit is located at the first operating position, the motor is rotated in a forward direction in response to an operation of the first operating unit; When the second operating unit is located at the second operating position, the motor is rotated in a direction opposite to the forward direction in response to an operation of the first operating unit; When the second operation unit is located in the neutral position, the motor is put into a state in which it cannot be driven. An electric operating machine according to any one of claims 1 to 12.

14. The first operation portion corresponds to a trigger, The control unit is turning on the illuminator in response to the first operation unit being pulled a first amount when the second operation unit is located at the first operation position or the second operation position; and driving the motor in response to the first operation unit being pulled a second amount greater than the first amount when the second operation unit is located at the first operation position or the second operation position. The electric operating machine according to claim 13.

15. The first operating portion is configured to be pulled by the first pulling amount when the second operating portion is located at the neutral position. The electric operating machine according to claim 14.

16. A motor configured to generate a rotational force; a hammer driving mechanism configured to receive the rotational force and drive the driven member forward to eject the driven member; Illuminators and A grip portion configured to be held by a user's hand; a first operation unit that is disposed within reach of the fingers of the user's hand holding the grip portion while holding the grip portion, and that drives the motor and turns on the illuminator; a second operation unit that is arranged within reach of the finger and that selects a first state in which the motor can be driven when the first operation unit is operated, or a second state in which the motor cannot be driven even when the first operation unit is operated; and a control unit configured to drive the motor and turn on the illuminator for a first period of time in response to the operation of the first operation unit when the first state is selected by the operation of the second operation unit, and to turn on the illuminator for a second period of time longer than the first period of time without driving the motor in response to the operation of the first operation unit when the second state is selected by the operation of the second operation unit. Driving tool.

17. A motor configured to generate a rotational force and drive a tool bit by the rotational force; Illuminators and A grip portion configured to be held by a user's hand; a first operation unit that is disposed within reach of the fingers of the user's hand holding the grip portion while holding the grip portion, and that drives the motor and turns on the illuminator; a second operation unit that is arranged within reach of the finger and that selects a first state in which the motor can be driven when the first operation unit is operated, or a second state in which the motor cannot be driven even when the first operation unit is operated; and a control unit configured to drive the motor and turn on the illuminator for a first period of time in response to the operation of the first operation unit when the first state is selected by the operation of the second operation unit, and to turn on the illuminator for a second period of time longer than the first period of time without driving the motor in response to the operation of the first operation unit when the second state is selected by the operation of the second operation unit. Power tools.

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