JP2008023694A - Working tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an effective technology for smoothing machining work in a working tool whose tip tool for executing the machining work of a workpiece material is driven by a driving motor. <P>SOLUTION: An electric grinder 100 can execute setting on a working mode in the working state of the driving motor 140 by a prescribed trigger action by a trigger 122 of a main grip 120. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a work tool construction technique.

Conventionally, for example, Patent Document 1 below discloses an electric grinder having a configuration in which a rotating grindstone that performs polishing grinding is driven by an electric drive motor. This electric grinder adopts a configuration in which the rotation speed setting knob of the drive motor is made variable by the operator operating the rotation speed setting knob provided on the upper part of the grinder body, thereby controlling the rotation of the rotating grindstone. Has been.
Japanese Patent Laid-Open No. 2-262953

By the way, in this type of work tool, it is assumed that an operation for adjusting the rotation of the tip tool is performed during the work or the like, depending on the type of workpiece and the work mode of the tip tool. In such a case, when the electric grinder described in Patent Document 1 is used, when the operator operates the rotation speed setting knob, the operator once removes the finger holding the predetermined grip portion of the tool body from the grip portion. Later, the rotation speed setting knob is operated and the work is performed again after gripping the grip portion, and it is necessary to change the work posture during the work. Therefore, when designing this type of work tool, a configuration is required in which an operator can smoothly perform desired settings without changing the work posture during work or the like.
The present invention has been made in view of the above points, and is a technique effective for facilitating a machining operation in a working tool in which a tip tool for performing a machining operation on a workpiece is driven by a drive motor. It is an issue to provide.

  In order to achieve the above object, the invention described in each claim is configured.

The work tool according to the present invention includes at least a main body, a tip tool, a drive motor, a hand grip, a trigger, and a control unit.
The tip tool of the present invention is arranged at the tool tip of the main body and is configured as a tool for performing a processing operation of a workpiece, and is used for various operations such as polishing, grinding, and cutting.
The drive motor of the present invention is housed in the main body and is configured as a motor that drives the tip tool by supplying power. A mechanism for transmitting the rotational force of the drive motor to the tip tool is appropriately disposed between the drive motor and the tip tool. As the “power source” here, a battery power source mounted on the tool body, an external power source connected to the drive motor through a power cord, or the like is used.
The hand grip of the present invention is provided in the main body and is configured as a hand grip that is gripped by an operator when using a tool, that is, a portion to which the gripping force (grip force) of the operator extends.
The trigger according to the present invention is biased from an on position where the drive motor is in an operating state to an off position where the driving motor is in an off state, and is turned off by one or more fingers of an operator holding the handgrip. Is configured as a trigger that can be pulled to the ON position.

In particular, the control unit of the present invention controls the drive motor to the operating state when the trigger is pulled to the on position, and sets the drive motor to the unlocked state when the trigger is operated to return to the off position. While controlling, it has a function which makes variable the setting regarding the operation mode in the operating state of the drive motor according to the operation mode of the trigger by the finger of the operator holding the handgrip. As for the “setting related to the operation mode in the operating state of the drive motor” here, typically, the rotation speed (rotation speed) and rotation direction of the drive motor in the operating state, and the rotation speed at the start of the drive motor are normally rotated. The soft start operation time that gradually increases to a certain number, the timing that defines the upper limit of the current value that is energized to the drive motor, the timing that maintains the energization state of the drive motor, and the like can be set as appropriate.
According to such a configuration of the work tool according to the present invention, the operator can operate the trigger without changing the work posture in the work posture while holding the handgrip, and in the operating state of the drive motor. It is possible to change the setting relating to the operation mode, and thus it is possible to facilitate the machining operation.

  In the work tool according to a further aspect of the present invention, the control unit is pulled back to the on position after the trigger is returned from the on position to the off position as a setting related to the operation mode in the operating state of the drive motor. Rotation of the drive motor each time the trigger action is performed within a predetermined time with respect to the trigger action to be performed or the trigger action that is performed by pulling the trigger from the off position to the on position and then returning to the off position again. The control mode is configured to switch the number setting. That is, in this control mode, the rotational speed setting of the drive motor is switched according to the time required for a predetermined trigger action. As the control mode, typically, a setting in which the rotational speed of the drive motor is increased stepwise or alternatively to the high rotation side, or a setting that gradually decreases to the low rotation side, or the like is appropriately adopted. can do. According to such a configuration, there is provided a work tool that can be controlled to switch the rotational speed setting of the drive motor to a desired state according to the time required for a predetermined trigger action by the trigger.

  In the work tool according to a further aspect of the present invention, as a setting related to the operation mode in the operation state of the drive motor, the control unit pulls the trigger back to the on position after the trigger is returned from the on position to the off position. The trigger action that is operated or the trigger action that is pulled back from the off position to the on position and then back to the off position is driven according to the number of times the trigger action is repeated within a predetermined time. The control mode is configured to switch the rotational speed setting of the motor. As this control mode, typically, as the number of repetitions of the trigger action increases, the drive motor rotation speed is increased stepwise, or the drive motor corresponding to the number of repetitions of the trigger action is increased. Settings for alternatively selecting the number of rotations can be appropriately adopted. According to such a configuration, there is provided a work tool capable of controlling the setting of the rotational speed of the drive motor to a desired state in accordance with the number of repetitions of a predetermined trigger action by a trigger within a predetermined time.

  In the work tool according to a further aspect of the present invention, as a setting related to the operation mode in the operation state of the drive motor, the control unit pulls the trigger back to the on position after the trigger is returned from the on position to the off position. Regarding the trigger action to be operated, or the trigger action that is operated to pull the trigger back from the off position to the on position and then back to the off position, the number of rotations of the drive motor depends on the operation speed of the trigger action. The configuration has a control mode for switching the setting. As this control mode, typically, when a switch with sliding resistance is used as a trigger and the operation speed of the trigger action is relatively fast (sliding resistance has a large time change), the rotational speed of the drive motor is Setting to increase the rotation speed of the drive motor stepwise to the low rotation side when the operation speed of the trigger action is relatively slow (the time change of the sliding resistance is small). Alternatively, a setting for selectively selecting the rotation speed of the drive motor corresponding to the operation speed of the trigger action (change in sliding resistance with time) can be appropriately employed. According to such a configuration, there is provided a work tool that can be controlled to switch the rotational speed setting of the drive motor to a desired state in accordance with the operation speed of a predetermined trigger action by a trigger.

  In the work tool according to a further aspect of the present invention, as a setting related to the operation mode in the operation state of the drive motor, the control unit pulls the trigger back to the on position after the trigger is returned from the on position to the off position. When the trigger action is operated, or the trigger action is performed by pulling the trigger from the off position to the on position and then returning to the off position again, the drive motor is performed each time the trigger action is performed within a predetermined time. And a control mode for switching a soft start operation time for gradually increasing the rotational speed to the normal rotational speed at the time of activation. As this control mode, typically, the soft start operation time is changed when the time required for the trigger action is relatively short, and the soft start operation time is changed when the time required for the trigger action is relatively long. Can be appropriately adopted, such as a setting for maintaining the above, a setting for alternatively selecting the soft start operation time corresponding to the time required for the trigger action, and the like. According to such a configuration, it is possible to provide a work tool capable of controlling the soft start operation time of the drive motor to a desired state according to the time required for a predetermined trigger action by the trigger.

  In the work tool according to a further aspect of the present invention, the control unit includes a current limiter capable of defining an upper limit of a current value supplied to the drive motor, and a trigger is set as an operation mode in the operation state of the drive motor. The trigger action that is pulled back from the off position to the on position and then back to the off position again, or the trigger is pulled back from the on position to the off position and then pulled back to the on position. The trigger action has a control mode for switching the operation of the current limiter every time the trigger action is performed within a predetermined time. As this control mode, typically, when the time required for the trigger action is relatively short, the current limiter switches between the operating state and the non-operating state, and the time required for the trigger action is relatively When the current limiter is long, the setting for maintaining the operating state or the non-operating state of the current limiter, or the setting for selectively selecting the upper limit of the current value corresponding to the time required for the trigger action can be appropriately employed. . According to such a configuration, there is provided a work tool capable of controlling the operation of the current limiter to a desired state according to the time required for a predetermined trigger action by the trigger.

  In the work tool according to a further aspect of the present invention, the control unit includes a lock-on mechanism capable of maintaining the energized state of the drive motor, and the trigger is set from the off position as a setting relating to the operation mode in the operating state of the drive motor. A trigger action that is pulled back to the off position after being pulled to the on position, or a trigger action that is pulled back to the on position after the trigger is returned from the on position to the off position The control mode is configured to switch the operation of the lock-on mechanism according to the number of repetitions of the trigger action within a predetermined time. As this control mode, typically, a setting for setting the lock-on mechanism in an activated state or a non-activated state according to the number of repetitions of the trigger action can be appropriately employed. According to such a configuration, it is possible to provide a work tool capable of controlling the operation of the lock-on mechanism to a desired state according to the number of repetitions of a predetermined trigger action by a trigger within a predetermined time.

  Moreover, the work tool of the further form of this invention is further equipped with the irradiation apparatus irradiated toward a workpiece. “Irradiation device” here includes a wide range of devices that emit light toward a workpiece, and typically includes not only LEDs, lamps and fluorescent lamps as illumination for illuminating the workpiece, but also rounds. As an example of the irradiation device, a laser or the like used to align the black line of the workpiece in a work tool such as a saw is used. In this work tool, the control unit controls the drive motor to the operating state by pulling the trigger to the on position, and releases the drive motor by operating the trigger to return to the off position. On the other hand, the setting relating to the operating mode of at least one of the driving motor and the irradiation device in the operating state of the driving motor is variable according to the operating mode of the trigger by the finger of the operator holding the handgrip. The As for the “setting related to the operation mode of the irradiation device” here, typically, the timing for switching the irradiation device between the irradiation state and the non-irradiation state, the illuminance (degree of brightness) of the irradiation device, etc. are appropriately set. can do. According to such a configuration, the operator can operate the trigger without changing the work posture while holding the hand grip, and operate at least the drive motor and the irradiation device in the operation state of the drive motor. The setting relating to one of the operation modes can be changed, thereby facilitating the processing operation.

Moreover, the work tool of another form of this invention is provided with a main-body part, a tip tool, a drive motor, a hand grip, a trigger, an irradiation apparatus, and a control part at least. The main body, tip tool, drive motor, hand grip, trigger, and irradiation device, which are components of the work tool, are substantially the same as the main body, tip tool, drive motor, hand grip, trigger, and irradiation device described above. It has the function of. The control unit of the work tool controls the drive motor to the operating state when the trigger is pulled to the on position, and controls the drive motor to the unlocked state when the trigger is returned to the off position. On the other hand, according to the operation mode of the trigger by the finger of the operator holding the handgrip, the setting relating to the operating mode of the irradiation device in the operating state of the drive motor is variable.
According to such a configuration of the work tool according to the present invention, the operator can operate the trigger without changing the work posture in the work posture while holding the handgrip, and in the operating state of the drive motor. It is possible to change the setting relating to the operation mode of the irradiation device, thereby facilitating the processing operation.

  In the work tool according to a further embodiment of the present invention, the control unit is operated to return to the off position again after the trigger is pulled from the off position to the on position as a setting relating to the operation mode of the irradiation device. Regarding the trigger action or the trigger action that is pulled back to the on position after the trigger is operated to return from the on position to the off position, the irradiation device is in the irradiation state each time the trigger action is performed within a predetermined time. And a non-irradiation state. As this control mode, typically, when the time required for the trigger action is relatively short, the irradiation apparatus switches between the irradiation state and the non-irradiation state, and the time required for the trigger action is relative. In the case where the irradiation device is long, a setting in which the irradiation state or non-irradiation state of the irradiation apparatus is maintained can be adopted. According to such a configuration, there is provided a work tool capable of controlling the operation of the irradiation device to a desired state according to the time required for a predetermined trigger action by the trigger.

  As described above, according to the present invention, in a work tool in which a tip tool for performing a work operation on a workpiece is driven by a drive motor, in particular, the operation of the drive motor by a predetermined trigger action by a trigger of a handgrip. By adopting a configuration that enables settings relating to the operation mode of the drive motor in the state and the operation mode of the irradiation device, the operator can perform a desired operation without changing the work posture while holding the handgrip. It was possible to make settings, which made it possible to facilitate the machining operation.

  Hereinafter, an embodiment of a “work tool” of the present invention will be described with reference to the drawings. In the present embodiment, as an example of a work tool, an electric grinder used for polishing work or grinding work of a workpiece will be described. This electric grinder is also referred to as “disc grinder” or “disc sander”.

  FIG. 1 shows the appearance of an electric grinder 100 that is an embodiment of a work tool according to the present invention. As shown in FIG. 1, the electric grinder 100 according to the present embodiment mainly includes a tool main body 110, a main grip 120, a front grip 130, a drive motor 140, a drive mechanism 150, and a tip tool 160.

  The tool main body 110 is configured to house various electric system parts and mechanical system parts related to driving of the tip tool 160 in addition to the drive motor 140 and the drive mechanism 150 in the housing 112. The drive motor 140 is connected to the tip tool 160 via the drive mechanism 150, operates by supplying power from an external power source (AC power source 210 described later), and rotates the tip tool 160 in the operating state. The The drive motor 140 corresponds to “a drive motor that drives the tip tool by supplying power” in the present invention. A configuration in which the drive motor 140 is operated by a battery power source mounted on the tool body may be employed. Moreover, the tool main-body part 110 here comprises the "main-body part" in this invention. The tool main body 110 and the main grip 120 or the front grip 130 may be collectively referred to as a “main body”.

  The main grip 120 is configured as a handle (also referred to as “main handle” or “rear handle”) provided on the tool rear side (right side in FIG. 1) of the housing 112 of the tool main body 110. The main grip 120 constitutes a portion to which the operator's gripping force (grip strength) extends, and this main grip 120 corresponds to the “hand grip” in the present invention. The main grip 120 is typically gripped by an operator's dominant hand, and includes a trigger 122 for operating the drive motor 140 under the grip.

  The trigger 122 is normally biased to an off position where the drive motor 140 is inactivated, and an operator who has gripped the main grip 120 overcomes the biasing force and drives the drive motor 140. When a finger is pulled to the on position where the motor is in the activated state, a trigger switch 122a described later is turned on, and the operation of the drive motor 140 is started. On the other hand, by releasing (returning) the pulling operation of the trigger 122 by the finger, the trigger 122 returns to the off position with respect to the drive motor 140, and a trigger switch 122a, which will be described later, is turned off. Operation is stopped. The trigger 122 here corresponds to a “trigger” in the present invention. Although details will be described later, in the present embodiment, a configuration in which an operation mode of the drive motor 140 is set according to an operation mode of the trigger 122 by an operator and an operation of a lamp (irradiation device). A configuration is adopted in which settings relating to aspects are made.

  The front grip 130 is configured as a handle (also referred to as “auxiliary handle” or “front handle”) provided on the front side (left side in FIG. 1) of the tool main body 110. The front grip 130 is configured to extend in the left-right direction of the tool from the left front portion of the tool main body 110. The front grip 130 is typically gripped by a hand opposite to the operator's dominant hand.

  The tip tool 160 is configured as a rotating member that is rotationally driven when the rotational force of the driving motor 140 is transmitted through the driving mechanism 150, and specifically, a grinding wheel, a cutting wheel, a multi-disc, a flexible wheel, a diamond. A wheel, a sanding disk, a wire brush, or the like is appropriately used. The tip tool 160 here is a tip tool disposed in the tip region of the tool main body 110 and corresponds to the “tip tool” in the present invention. In addition, since the operation principle itself of the electric grinder 100 belongs to a well-known technical matter, a detailed description of its configuration and operation is omitted for the sake of convenience.

  Regarding the control system of the drive motor 140, reference is made to FIG. FIG. 2 shows a control circuit 151 that constitutes the drive mechanism 150 of the present embodiment.

  As shown in FIG. 2, the control circuit 151 of the present embodiment is mainly configured by an AC power source 152, a control unit (controller) 153, a switch detection unit 154, a setting display unit 155, and a motor drive unit 156. The control unit 153 is typically configured by a CPU (arithmetic processing unit), an input / output device, a storage device, a peripheral device, and the like. The control unit 153 corresponds to a “control unit” in the present invention. The switch detection unit 154 has a function of detecting the operation of the trigger switch 122a accompanying the operation of the trigger (the trigger 122 in FIG. 1) and outputting the detection signal to the control unit 153. The setting display unit 155 is configured as a digital or analog display means. The motor drive unit 156 is configured using a semiconductor switch and has a function capable of controlling the power supplied to the drive motor 140. The control unit 153 outputs a control signal of the drive motor 140 to the motor drive unit 156 based on the input signal by the switch detection unit 154, while mechanically or electrically using a display signal of the contents related to the control as a trigger operation. The information is output to the setting display unit 155 in conjunction. Thereby, based on the operation mode of the trigger 122 by the operator, the rotational speed of the drive motor 140 is controlled to a predetermined setting, and the contents of the setting are displayed on the setting display unit 155.

  Hereinafter, the relationship between the operation mode of the trigger 122 by the operator and the setting related to the operation mode of the controlled object will be described. In the present embodiment, the relationship is roughly divided into first to fourth embodiments. In the first to fourth embodiments, the setting relating to the operation mode of the controlled object is performed mainly by the control unit 153 described above.

[First embodiment]
First, in the first embodiment, a trigger action (hereinafter also referred to as “first trigger action”) in which the trigger 122 is pulled back to the on position after the trigger 122 is returned from the on position to the off position. Accordingly, the rotation speed setting of the drive motor 140 is switched. With respect to the first embodiment, control modes A to E of the drive motor 140 will be described with reference to FIGS. Each of the control modes shown in FIGS. 3 to 7 is indicated by the relationship between the operation mode related to the first trigger action of the trigger 122 by the operator and the rotation speed setting of the drive motor 140. Further, in the control modes A to E, the drive motor 140 has the upper limit rotational speed with respect to the rotational speed setting, with the second and third rotational speeds sandwiched from the first rotational speed that is the lower limit rotational speed. There are a total of four set rotational speeds up to four rotational speeds.

(Control mode A)
In the control mode A of the first embodiment, in conjunction with the first trigger action of the trigger 122, the set rotational speed of the drive motor 140 is stepwise between the first rotational speed and the fourth rotational speed. It is changed (also called “shift”). Specifically, as shown in FIG. 3, a timer (not shown) is activated on the condition that the switch is switched from SW on to SW off, and counts a predetermined time Δt0 set in advance. Then, every time the operator performs the first trigger action of the trigger 122 within the predetermined time Δt0 until the rotation speed of the drive motor 140 reaches the fourth rotation speed that is the upper limit rotation speed, the setting of the drive motor 140 is performed. The number of rotations increases step by step from the first number of rotations to the fourth number of rotations. In addition, once the set rotational speed of the drive motor 140 reaches the fourth rotational speed, every time the operator performs the first trigger action of the trigger 122 within the predetermined time Δt0, the set rotational speed of the drive motor 140 is set. Decreases one step at a time from the fourth rotational speed to the first rotational speed. That is, in this control mode A, when the rotation speed setting of the drive motor 140 is switched according to the time required for the first trigger action of the trigger 122, and when the first trigger action is repeated, the first rotation speed is increased. The rotation speed setting increasing step up to the fourth rotation speed and the rotation speed setting decreasing step from the fourth rotation speed to the first rotation speed are sequentially repeated. On the other hand, in the control mode A, when the first trigger action of the trigger 122 is not performed within the predetermined time Δt0, the rotational speed setting of the drive motor 140 is maintained or reset to the initial setting.
This control mode A corresponds to a “control mode for switching the rotational speed setting of the drive motor every time the trigger action is performed within a predetermined time”. As an example of changing the control mode A, the rotation speed of the drive motor 140 is set in accordance with a trigger action in which the trigger 122 is pulled back from the off position to the on position and then back to the off position. A switching control mode can also be adopted.

(Control mode B)
In the control mode B of the first embodiment, similarly to the control mode A, the set rotation speed of the drive motor 140 is set to the first rotation speed and the fourth rotation speed in conjunction with the first trigger action of the trigger 122. It is changed step by step between the rotation speeds. Specifically, as shown in FIG. 4, the timer counts a predetermined time Δt0 on condition that the switch is switched from SW on to SW off. If the operator performs the first trigger action of the trigger 122 within the predetermined time Δt0 until the set rotation speed of the drive motor 140 reaches the fourth rotation speed, the set rotation speed of the drive motor 140 is the first rotation speed. The number of rotations is increased by one step from the number of rotations to the fourth number of rotations. In addition, once the set rotational speed of the drive motor 140 reaches the fourth rotational speed, if the operator performs the first trigger action of the trigger 122 within the predetermined time Δt0, the set rotational speed of the drive motor 140 is increased. After a three-step decrease from the fourth rotation speed to the first rotation speed, it increases again step by step from the first rotation speed to the fourth rotation speed. That is, in the control mode B, when the first trigger action of the trigger 122 is repeated, the rotation speed setting increase step from the first rotation speed to the fourth rotation speed is repeated. On the other hand, in this control mode B, when the first trigger action of the trigger 122 is not performed within the predetermined time Δt0, the rotational speed setting of the drive motor 140 is maintained or reset to the initial setting.
This control mode B corresponds to a “control mode for switching the rotational speed setting of the drive motor every time the trigger action is performed within a predetermined time”. As an example of the change in the control mode B, the rotational speed of the drive motor 140 is set in accordance with a trigger action in which the trigger 122 is pulled back from the off position to the on position and then returned to the off position. A switching control mode can also be adopted.

(Control mode C)
In the control mode C of the first embodiment, in conjunction with the first trigger action of the trigger 122, the set rotational speed of the drive motor 140 is stepwise between the first rotational speed and the fourth rotational speed. Be changed. Specifically, as shown in FIG. 5, the timer counts a predetermined time Δt0 on condition that the switch is switched from SW on to SW off. Then, until the set rotational speed of the drive motor 140 reaches the fourth rotational speed, if the operator repeats the first trigger action of the trigger 122 twice within the predetermined time Δt0, the set rotational speed of the drive motor 140 is increased. It increases by one step from the first rotational speed to the second rotational speed. Similarly, when the worker repeats the first trigger action three times within the predetermined time Δt0, the set rotational speed of the drive motor 140 increases by one step from the second rotational speed to the third rotational speed, When the person repeats the first trigger action four times within the predetermined time Δt0, the set rotational speed of the drive motor 140 increases by one step from the third rotational speed to the fourth rotational speed. In addition, once the set rotational speed of the drive motor 140 reaches the fourth rotational speed, the operator performs once within the predetermined time Δt0, so that the set rotational speed of the drive motor 140 is changed from the fourth rotational speed. After dropping to the first rotation speed by three steps, the rotation speed increases again step by step from the first rotation speed to the fourth rotation speed according to the number of repetitions of the first trigger action. That is, in the control mode C, the rotation speed of the drive motor 140 is set to any one of the first to fourth rotation speeds according to the number of repetitions of the first trigger action of the trigger 122 within a predetermined time. It becomes. On the other hand, in the control mode C, when the first trigger action of the trigger 122 is not performed within the predetermined time Δt0, the rotation speed setting of the drive motor 140 is maintained or reset to the initial setting.
This control mode C corresponds to a “control mode for switching the rotational speed setting of the drive motor in accordance with the number of repetitions of the trigger action within a predetermined time”. As an example of changing the control mode C, the rotational speed of the drive motor 140 is set in accordance with a trigger action that is performed again after the trigger 122 is pulled from the off position to the on position. A switching control mode can also be adopted.

(Control mode D)
In the control mode D of the first embodiment, the set rotational speed of the drive motor 140 is between the first rotational speed and the fourth rotational speed in conjunction with the operation time required for the first trigger action of the trigger 122. Will be changed in stages. Specifically, as shown in FIG. 6, when the time required for the first trigger action of the trigger 122 performed by the operator (hereinafter referred to as “SW off time”) is relatively short, for example, in FIG. When Δt1, the set rotational speed of the drive motor 140 is increased by one step. On the other hand, when the time required for the first trigger action of the trigger 122 performed by the worker is relatively long, for example, when Δt2 in FIG. 6 is set, the set rotational speed of the drive motor 140 decreases by one step. That is, in this control mode D, whether to increase or decrease the set rotational speed of the drive motor 140 is determined based on the time required for the first trigger action of the trigger 122. In practice, after setting a predetermined time in advance, when the time required for the first trigger action of the trigger 122 is shorter than the predetermined time (in the case of Δt1), the set rotational speed of the drive motor 140 is increased by one step. When the time required for the first trigger action of the trigger 122 is longer than a predetermined time set in advance (in the case of Δt2), the set rotational speed of the drive motor 140 is decreased by one step. On the other hand, when the first trigger action of the trigger 122 is not performed within a predetermined time, the rotation speed setting of the drive motor 140 is maintained or reset to the initial setting.
The control mode D corresponds to a “control mode for switching the rotational speed setting of the drive motor every time the trigger action is performed within a predetermined time”. As an example of changing the control mode D, the rotational speed of the drive motor 140 is set in accordance with a trigger action that is performed again when the trigger 122 is pulled back from the off position to the on position. A switching control mode can also be adopted.

(Control mode E)
In the control mode E of the first embodiment, as in the case of the control mode D, the set rotational speed of the drive motor 140 is set to the first rotational speed and the fourth rotational speed in conjunction with the first trigger action of the trigger 122. It is changed step by step between the rotation speeds. Specifically, as shown in FIG. 7, when the time required for the first trigger action of the trigger 122 performed by the operator is the first time Δt1, the rotational speed of the drive motor 140 is the first rotational speed. And when the second time Δt2 is longer than the first time Δt1, the rotational speed of the drive motor 140 is set to the second rotational speed. Similarly, when the time required for the first trigger action of the trigger 122 performed by the operator is the third time Δt3, the rotation speed of the drive motor 140 is set to the third rotation speed, and the third time When the fourth time Δt4 is longer than Δt3, the rotational speed of the drive motor 140 is set to the fourth rotational speed. That is, in this control mode E, the rotation speed of the drive motor 140 is selectively or alternatively set to one of the first to fourth rotation speeds based on the time required for the first trigger action of the trigger 122. Will be. On the other hand, in this control mode E, when the first trigger action of the trigger 122 is not performed within a predetermined time, the rotation speed setting of the drive motor 140 is maintained or reset to the initial setting.
The control mode E corresponds to a “control mode for switching the rotational speed setting of the drive motor every time the trigger action is performed within a predetermined time”. As an example of the change in the control mode E, the rotation speed of the drive motor 140 is set in accordance with a trigger action in which the trigger 122 is pulled back from the off position to the on position and then returned to the off position. A switching control mode can also be adopted.

[Second Embodiment]
Next, in the second embodiment, the rotation speed setting of the drive motor 140 is switched according to the switch sliding resistance at the time of the first trigger action of the trigger 122. With respect to the second embodiment, it is preferable to use a control circuit of another form (control circuit 251 shown in FIG. 8) different from the control circuit 151 shown in FIG. In the control circuit 251 shown in FIG. 8, a trigger switch 222a with sliding resistance is adopted as a trigger switch accompanying the operation of the trigger (trigger 122 in FIG. 1) instead of the trigger switch 122a shown in FIG. With this trigger switch 222a, the switch sliding resistance at the time of the first trigger action of the trigger 122 is detected. The other components in the control circuit 251 are the same as those in the control circuit 151 shown in FIG.

  Regarding the second embodiment, the control modes F to J of the drive motor 140 will be described with reference to FIGS. 9 to 13. Each of the control modes shown in FIGS. 9 to 13 is indicated by the relationship between the sliding resistance in the first trigger action of the trigger 122 by the operator and the set rotational speed of the drive motor 140. In the control modes F to J, the sliding resistance value in the first trigger action of the trigger 122 is detected by the trigger switch 222a. Further, in the control modes F to J, the drive motor 140 is set in four stages in total from the first rotation speed that is the lower limit rotation speed to the fourth rotation speed that is the upper limit rotation speed with respect to the rotation speed setting. Have a number. On the other hand, when the first trigger action of the trigger 122 is not performed within a predetermined time, the rotation speed setting of the drive motor 140 is maintained or reset to the initial setting. Each of these control modes F to J corresponds to a “control mode for switching the rotational speed setting of the drive motor according to the operation speed of the trigger action” described in claim 4. As an example of changing the control modes F to J, the rotation speed of the drive motor 140 is set in accordance with a trigger action that is performed again after the trigger 122 is pulled from the off position to the on position. It is also possible to adopt a control mode for switching between.

(Control mode F)
In the control mode F of the second embodiment, the set rotational speed of the drive motor 140 is set to the first rotational speed and the fourth rotational speed in conjunction with detection of the specified sliding resistance at the time of the first trigger action of the trigger 122. The number is changed step by step (also referred to as “shift”). Specifically, as shown in FIG. 9, a timer (not shown) is operated on the condition that the switch is switched from SW on to SW off, and counts a predetermined time Δt0 set in advance. Then, until the set rotational speed of the drive motor 140 reaches the fourth rotational speed, every time the specified sliding resistance value (100 kΩ in FIG. 9) in the first trigger action of the trigger 122 is detected within the predetermined time Δt0. In addition, the set rotational speed of the drive motor 140 is increased step by step from the first rotational speed to the fourth rotational speed. In addition, once the set rotational speed of the drive motor 140 has reached the fourth rotational speed, the drive motor 140 is detected each time a specified sliding resistance value in the first trigger action of the trigger 122 is detected within the predetermined time Δt0. The set rotational speed of 140 decreases step by step from the fourth rotational speed to the first rotational speed. That is, in this control mode F, when the rotation speed setting of the drive motor 140 is switched according to the operation speed of the first trigger action of the trigger 122, and when the first trigger action of the trigger 122 is repeated, the first The rotation speed setting increase step from the rotation speed to the fourth rotation speed and the rotation speed setting decrease step from the fourth rotation speed to the first rotation speed are sequentially repeated.

(Control mode G)
In the control mode G of the second embodiment, as in the case of the control mode F, the set rotational speed of the drive motor 140 is set in conjunction with the detection of the specified sliding resistance at the time of the first trigger action of the trigger 122. The rotation speed is changed stepwise between the rotation speed of 1 and the fourth rotation speed. Specifically, as shown in FIG. 10, the timer counts a predetermined time Δt0 on condition that the switch is switched from SW on to SW off. Then, until the set rotational speed of the drive motor 140 reaches the fourth rotational speed, every time the prescribed sliding resistance value in the first trigger action of the trigger 122 is detected within the predetermined time Δt0, the drive motor 140 The set rotational speed increases step by step from the first rotational speed to the fourth rotational speed. In addition, once the set rotational speed of the drive motor 140 has reached the fourth rotational speed, the drive motor 140 is detected each time a specified sliding resistance value in the first trigger action of the trigger 122 is detected within the predetermined time Δt0. After the set rotational speed of 140 drops by three steps from the fourth rotational speed to the first rotational speed, it increases again step by step from the first rotational speed to the fourth rotational speed. That is, in this control mode G, when the rotation speed setting of the drive motor 140 is switched according to the operation speed of the first trigger action of the trigger 122, and when the first trigger action of the trigger 122 is repeated, the first The rotation speed setting increase step from the rotation speed to the fourth rotation speed is repeated.

(Control mode H)
In the control mode H of the second embodiment, the set rotational speed of the drive motor 140 is set to the first rotational speed and the fourth rotational speed in conjunction with the number of detections of the specified sliding resistance at the time of the first trigger action of the trigger 122. It is changed step by step between the rotation speeds. Specifically, as shown in FIG. 11, the timer counts a predetermined time Δt0 on condition that the switch is switched from SW on to SW off. Then, until the set rotational speed of the drive motor 140 reaches the fourth rotational speed, the predetermined sliding resistance value in the first trigger action of the trigger 122 is repeatedly detected twice within a predetermined time Δt0. Then, the set rotational speed of the drive motor 140 increases by one step from the first rotational speed to the second rotational speed. Similarly, when the specified sliding resistance value in the first trigger action is detected three times within the predetermined time Δt0, the set rotational speed of the drive motor 140 is changed from the second rotational speed to the third rotational speed. When the predetermined sliding resistance value in the first trigger action is detected four times within a predetermined time Δt0, and the set rotational speed of the driving motor 140 is detected from the third rotational speed to the fourth rotational speed. Go up one step. In addition, once the set rotational speed of the drive motor 140 reaches the fourth rotational speed, a predetermined sliding resistance value in the first trigger action is detected once within a predetermined time Δt0, whereby the drive motor After the set rotational speed of 140 has dropped from the fourth rotational speed to the first rotational speed in three steps, the first rotational speed is again set according to the number of detections of the specified sliding resistance value in the first trigger action. The speed increases step by step from the rotational speed to the fourth rotational speed. That is, in this control mode H, the rotational speed setting of the drive motor 140 is switched according to the operation speed of the first trigger action of the trigger 122, and the specified sliding resistance value in the first trigger action of the trigger 122 is changed. Based on the number of times of detection, the rotational speed of the drive motor 140 is selectively or alternatively set to one of the first to fourth rotational speeds.

(Control mode I)
In the control mode I of the second embodiment, the set rotational speed of the drive motor 140 is set to the first rotational speed and the fourth rotational speed in conjunction with the change time of the specified sliding resistance at the time of the first trigger action of the trigger 122. It is changed step by step between the rotation speeds. Specifically, as shown in FIG. 12, when the time required for the change of the specified sliding resistance value in the first trigger action of the trigger 122 is relatively short, for example, when Δt1 in FIG. The set rotational speed of the drive motor 140 increases by one step. On the other hand, when the time required for the change of the specified sliding resistance value in the first trigger action of the trigger 122 is relatively long, for example, when Δt2 in FIG. Descend. That is, in this control mode D, the rotation speed of the drive motor 140 is increased in accordance with the time required for the change of the specified sliding resistance value in the first trigger action of the trigger 122, that is, the operation speed of the first trigger action. Whether to lower or lower is set.

(Control mode J)
In the control mode J of the second embodiment, similarly to the control mode I, the set rotational speed of the drive motor 140 is linked with the change time of the specified sliding resistance at the time of the first trigger action of the trigger 122. It is changed stepwise between the first rotation speed and the fourth rotation speed. Specifically, as shown in FIG. 13, when the time required for the change of the specified sliding resistance value in the first trigger action of the trigger 122 is the first time Δt1, the rotational speed of the drive motor 140 is When the rotation speed is set to the first rotation speed and the second time Δt2 is longer than the first time Δt1, the rotation speed of the drive motor 140 is set to the second rotation speed. Similarly, when the time required for the change of the specified sliding resistance value in the first trigger action of the trigger 122 is the third time Δt3, the rotational speed of the drive motor 140 is set to the third rotational speed, When the fourth time Δt4 is longer than the third time Δt3, the rotational speed of the drive motor 140 is set to the fourth rotational speed. That is, in this control mode I, the rotation speed of the drive motor 140 is any one of the first to fourth rotation speeds based on the time required for the change of the specified sliding resistance value in the first trigger action of the trigger 122. It is set selectively or alternatively.

[Third embodiment]
Next, in the third embodiment, the above-described first trigger action of the trigger 122 or a trigger action (the trigger action is performed to return the trigger 122 to the OFF position again after the trigger 122 is pulled from the OFF position to the ON position). In response to the “second trigger action”), settings other than the rotation speed of the drive motor 140 are switched. Regarding the third embodiment, the control modes K to O of the drive motor 140 will be described with reference to FIGS.

(Control mode K)
In the control mode K of the third embodiment, the soft start operation time of the drive motor 140 is set to be changed in conjunction with the first trigger action mode of the trigger 122. Specifically, the setting value of the soft start operation time is switched every time the first trigger action of the trigger 122 is performed within a predetermined time. That is, as shown in FIG. 14, when the time required for the first trigger action of the trigger 122 performed by the operator is relatively short, for example, when Δt1 in FIG. Is switched between T1 and T2 (> T1). Further, when the time required for the first trigger action of the trigger 122 performed by the operator is relatively long, for example, when Δt2 in FIG. 14, the setting value of the soft start operation time of the drive motor 140 is set to the previous value. Set the same value as the soft start operation time. As for this setting, it is preferable to adopt a configuration in which the setting value of the soft start operation time is stored in a memory or the like and held. The “soft start operation” here is an operation of gradually increasing the rotation speed to the normal rotation speed when the drive motor 140 is started, and the time until the operation is completed is defined as “soft start operation time”. . On the other hand, when the first trigger action of the trigger 122 is not performed within the predetermined time in the control mode K, the setting of the soft start operation time is maintained or reset to the initial setting.
The control mode K is “a control mode for switching a soft start operation time for gradually increasing the rotational speed to the normal rotational speed when the drive motor is started each time the trigger action is performed within a predetermined time”. It corresponds to. As an example of changing the control mode K, a control mode that switches the setting of the soft start operation time of the drive motor 140 in accordance with the second trigger action of the trigger 122 may be employed.

(Control mode L)
In the control mode L of the third embodiment, the operation mode of the current limiter of the drive motor 140 is set to be changed in conjunction with the switch operation mode of the trigger 122. Specifically, every time the second trigger action of the trigger 122 is performed within a predetermined time, the operation mode of the current limiter is switched between the operation state and the operation release state. That is, as shown in FIG. 15, when the time required for the second trigger action of the trigger 122 is relatively short, for example, when Δt1 in FIG. 15, the current limiter of the drive motor 140 is activated and deactivated. When the time is relatively long, for example, when Δt2 in FIG. 15, the control is performed to maintain the current limiter of the drive motor 140 in either the operation state or the operation release state. The electric limiter used in the control mode L has a function of feedback-controlling the actual current so that the current supplied to the drive motor 140 does not exceed a preset predetermined current value in the operating state. On the other hand, in the control mode L, when the second trigger action of the trigger 122 is not performed within a predetermined time, the operation mode of the current limiter is maintained or reset to the initial setting.
The control mode L corresponds to a “control mode in which the operation of the current limiter is switched every time the trigger action is performed within a predetermined time”. As an example of changing the control mode L, a control mode in which the operation mode of the current limiter is switched in accordance with the first trigger action of the trigger 122 can be adopted.

(Control mode M)
In the control mode M of the third embodiment, the operation mode of the light is set to be changed in conjunction with the switch operation mode of the trigger 122. Specifically, each time the second trigger action of the trigger 122 is performed within a predetermined time, the operation mode of the light is switched between the operation state and the operation release state (non-operation state). That is, as shown in FIG. 16, when the time required for the second trigger action of the trigger 122 is relatively short, the light is switched between the activated state and the deactivated state, and when the time is relatively long. Control is performed to maintain the light in either the activated state or the deactivated state. On the other hand, in the control mode M, when the second trigger action of the trigger 122 is not performed within a predetermined time, the operation mode of the light is maintained or reset to the initial setting. The light used in the control mode M is configured as means for irradiating the tip tool 160 or the workpiece when using the tool. In addition to the on / off operation of the light, a configuration for controlling the lighting time and lighting intensity (brightness), etc. Furthermore, in addition to the light, a laser or fluorescent lamp used for inking the work material with a work tool such as a circular saw. It is also possible to adopt a configuration that controls the operation mode. The light, laser, and fluorescent lamp referred to here constitute the “irradiation device” in the present invention.
The control mode M corresponds to a “control mode for switching the irradiation apparatus between the irradiation state and the non-irradiation state each time the trigger action is performed within a predetermined time”. As an example of changing the control mode M, a control mode in which the operation mode of the light is switched in accordance with the first trigger action of the trigger 122 can be adopted.

(Control mode N)
In the control mode N of the third embodiment, the operating state of the drive motor 140 is locked (also referred to as “lock on”) in conjunction with the switch operation mode of the trigger 122, and the lock on state of the drive motor 140 is locked. It is set to be released (also referred to as “lock-off”). Specifically, the drive motor 140 is switched between a lock-on state and a lock-off state according to the number of repetitions of the second trigger action of the trigger 122 within a predetermined time. That is, as shown in FIG. 17, by repeating the second trigger action of the trigger 122 twice within a predetermined time Δt0 set in advance, the subsequent operating state of the drive motor 140 is locked. Thereafter, the lock-on state of the drive motor 140 is released by performing the second trigger action of the trigger 122 once within a preset predetermined time Δt0.
The control mode N corresponds to a “control mode in which the operation of the lock-on mechanism is switched according to the number of repetitions of the trigger action within a predetermined time”. As an example of changing the control mode N, a control mode in which the drive motor 140 is switched between the lock-on state and the lock-off state in accordance with the first trigger action of the trigger 122 can be adopted.

(Control mode O)
In the control mode O of the third embodiment, as in the case of the control mode N, the operating state of the drive motor 140 is locked (locked on) in conjunction with the switch operation mode of the trigger 122. The lock on state is set to be unlocked (lock off). Specifically, the drive motor 140 is switched between a lock-on state and a lock-off state according to the number of repetitions of the second trigger action of the trigger 122 within a predetermined time. That is, as shown in FIG. 18, by repeating the second trigger action of the trigger 122 twice within a preset predetermined time Δt0, the subsequent operation state of the drive motor 140 is locked. Thereafter, when a predetermined time set in advance elapses, the lock-on state of the drive motor 140 is automatically released.
The control mode O corresponds to a “control mode in which the operation of the lock-on mechanism is switched according to the number of times the trigger action is repeated within a predetermined time”. As an example of changing the control mode O, a control mode in which the drive motor 140 is switched between the lock-on state and the lock-off state in accordance with the first trigger action of the trigger 122 can be adopted.

[Fourth embodiment]
Next, 4th Embodiment is taken as the case where 1st Embodiment and 3rd Embodiment are combined. Regarding the fourth embodiment, the control mode P of the drive motor 140 will be described with reference to FIG.

(Control mode P)
The control mode P of the fourth embodiment is a control mode that is a combination of a control mode similar to the control mode A of the first embodiment and a control mode similar to the control mode M of the third embodiment. In conjunction with the switch operation mode of 122, the rotational speed of the drive motor 140 is changed in a stepwise manner between the first rotational speed and the fourth rotational speed. The operation mode of the light to irradiate is changed.

  Specifically, as shown in FIG. 19, Δt9 is used as the prescribed time of the second trigger action of the trigger 122 for the on / off operation of the light, and the second of the trigger 122 is used for the change in the rotation speed of the drive motor 140. .DELTA.t9 and .DELTA.t10 (> .DELTA.t9) are used as specified times for the trigger action. When the time required for the second trigger action of the trigger 122 is Δt9 or less, it is determined that the second trigger action is an operation for switching the light switch on and off, and the light switch is switched on and off. Take control. Note that the form shown in FIG. 19 describes the case where the write operation matches the light setting, that is, the case where the switch action by the trigger 122 and the write operation are not linked.

In addition, when the time required for the second trigger action of the trigger 122 is larger than Δt9 and smaller than Δt10, the second trigger action is an operation for increasing the rotation speed of the drive motor 140 stepwise. The control is performed to increase the set rotational speed of the drive motor 140 step by step. Further, when the time required for the second trigger action of the trigger 122 is Δt10 or more, it is determined that the second trigger action is an operation for lowering the rotation speed of the drive motor 140 in a stepwise manner. Control is performed to lower the set rotational speed of the motor 140 stepwise.
The control mode P includes “a control mode in which the rotational speed setting of the drive motor is switched every time the trigger action is performed within a predetermined time” and “the trigger action is A control mode that switches the irradiation device between an irradiation state and a non-irradiation state each time it is performed within a predetermined time. As an example of the change of the control mode P, the control mode for switching the rotation speed setting of the drive motor 140 in accordance with the second trigger action of the trigger 122, or the first trigger action of the trigger 122. Thus, it is possible to adopt a control mode for switching the operation mode of the light.

In the first to fourth embodiments, the set value is retained even while the trigger 122 pull operation is cancelled, and the previous set value is maintained when the trigger 122 pull operation is performed next time. It is possible to configure so as to perform work.
In the first to fourth embodiments, the set value can be reset when the time during which the trigger 122 has been released has been released for a certain period of time. In the first to fourth embodiments, the set value can be reset when the pulling operation of the trigger 122 is released.
Moreover, in the said 1st-4th embodiment, it is preferable to employ | adopt the structure which displays and outputs a setting value to the setting display part 155. FIG. Regarding the configuration for displaying and outputting the set value, as the above-described setting display unit 155, an LED, a lamp, a display, or the like whose output mode is variable can be used. More specific configurations include a configuration in which a number of LEDs or lamps indicating a set value are turned on or blinking, and a configuration in which information indicating the set value is displayed with colors, characters, numbers, symbols, and the like. On the other hand, with respect to the configuration for outputting the set value as a sound, a speaker whose output mode is variable can be used. As a more specific configuration, there is a configuration in which information indicating a set value is output by a buzzer sound or a voice.
In the first to fourth embodiments, in addition to the control modes, it is possible to provide a switching prevention mode for preventing switching of settings relating to the drive motor 140 and the like. In this case, the switching prevention mode can be set by performing a specific operation of the trigger 122 or an operation member different from the trigger 122.

  As described above, according to the present embodiment, the operator operates the trigger 122 without changing the work posture while holding the main grip 120 and operates the drive motor 140 in an operating state. It is possible to change the setting relating to the operating mode in the above and the setting relating to the operating mode in the operating state of the light, thereby making it possible to facilitate the machining operation.

(Other embodiments)
Note that the present invention is not limited to the above embodiment, and various application examples and modification examples based on the present embodiment can be conceived. For example, the following embodiments to which this embodiment is applied can be implemented.

  In the above-described embodiment, an electric grinder used for polishing work or grinding work is described as an example of a work tool. However, the present invention is not limited to the electric grinder, and a plurality of tip tools are used. The present invention can be applied to various types of work tools having a configuration that can be set in the drive mode. At this time, regarding the driving method of the tip tool, a configuration in which the tip tool is driven by a rechargeable or drive motor driven by an AC power source can be employed.

It is a figure which shows the external appearance of the electric grinder 100 which is one Embodiment of the working tool concerning this invention. It is a figure which shows the control circuit 151 which comprises the drive mechanism 150 of this Embodiment. It is a figure which shows the control regarding the control mode A of 1st Embodiment. It is a figure which shows the control regarding the control mode B of 1st Embodiment. It is a figure which shows the control regarding the control mode C of 1st Embodiment. It is a figure which shows the control regarding the control mode D of 1st Embodiment. It is a figure which shows the control regarding the control mode E of 1st Embodiment. It is a figure which shows the control circuit 251 of another form which comprises the drive mechanism 150 of this Embodiment. It is a figure which shows the control regarding the control mode F of 2nd Embodiment. It is a figure which shows the control regarding the control mode G of 2nd Embodiment. It is a figure which shows the control regarding the control mode H of 2nd Embodiment. It is a figure which shows the control regarding the control mode I of 2nd Embodiment. It is a figure which shows the control regarding the control mode J of 2nd Embodiment. It is a figure which shows the control regarding the control mode K of 3rd Embodiment. It is a figure which shows the control regarding the control mode L of 3rd Embodiment. It is a figure which shows the control regarding the control mode M of 3rd Embodiment. It is a figure which shows the control regarding the control mode N of 3rd Embodiment. It is a figure which shows the control regarding the control mode O of 3rd Embodiment. It is a figure which shows the control regarding the control mode P of 4th Embodiment.

Explanation of symbols

100 Electric grinder (work tool)
110 Tool body 112 Housing 120 Main grip 122 Trigger 122a Trigger switch 130 Front grip 140 Drive motor 150 Drive mechanism 151 Control circuit 152 AC power supply 153 Control unit (controller)
154 Switch detection unit 155 Setting display unit 156 Motor drive unit 160 Tip tool 222a Trigger switch 251 Control circuit

Claims (10)

The main body,
A tip tool that is disposed at the tool tip of the main body, and performs a processing operation of a workpiece; and
A drive motor housed in the main body and driving the tip tool by power supply;
A hand grip provided on the main body and gripped by an operator when using the tool;
The drive motor is urged from an on position where the drive motor is activated to an off position where the operation is released, and is pulled from the off position to the on position by an operator's finger holding the hand grip. A trigger that can be operated,
While the trigger is pulled to the on position, the drive motor is controlled to operate, and the trigger is returned to the off position to control the drive motor to be in an unlocked state, A control unit that varies a setting relating to an operation mode in an operation state of the drive motor according to an operation mode of the trigger by an operator's finger holding the hand grip;
A work tool characterized by having a configuration comprising: The work tool according to claim 1,
The control unit, as a setting relating to the operation mode in the operation state of the drive motor, trigger action that is pulled back to the on position after the trigger is operated to return from the on position to the off position, or With respect to a trigger action in which the trigger is pulled back from the off position to the on position and then back to the off position, the rotation of the drive motor is performed each time the trigger action is performed within a predetermined time. A work tool having a control mode for switching the number setting. The work tool according to claim 1,
The control unit, as a setting relating to the operation mode in the operation state of the drive motor, trigger action that is pulled back to the on position after the trigger is operated to return from the on position to the off position, or With respect to a trigger action in which the trigger is pulled back from the off position to the on position and then back to the off position again, the drive motor is controlled according to the number of repetitions of the trigger action within a predetermined time. A work tool having a control mode for switching a rotation speed setting. The work tool according to claim 1,
The control unit, as a setting relating to the operation mode in the operation state of the drive motor, trigger action that is pulled back to the on position after the trigger is operated to return from the on position to the off position, or Regarding the trigger action in which the trigger is pulled back from the off position to the on position and then returned to the off position again, the rotational speed of the drive motor is set according to the operation speed of the trigger action. A work tool having a control mode for switching. The work tool according to claim 1,
The control unit, as a setting relating to the operation mode in the operation state of the drive motor, trigger action that is pulled back to the on position after the trigger is operated to return from the on position to the off position, or When the trigger is pulled from the off position to the on position and then returned to the off position again, the drive motor is activated each time the trigger action is performed within a predetermined time. A work tool having a control mode for switching a soft start operation time to gradually increase the rotation speed to a normal rotation speed. The work tool according to claim 1,
The control unit includes a current limiter capable of defining an upper limit of a current value supplied to the drive motor, and the trigger is moved from the off position to the on position as a setting relating to an operation mode in the operation state of the drive motor. Trigger action that is operated to return to the OFF position again after the pulling operation is performed, or a trigger that is operated to be pulled back to the ON position after the trigger is returned from the ON position to the OFF position. A work tool having a control mode for switching the operation of the current limiter each time the trigger action is performed within a predetermined time. The work tool according to claim 1,
The control unit includes a lock-on mechanism capable of maintaining an energized state of the drive motor, and the trigger is pulled from the off position to the on position as a setting relating to an operation mode in the operation state of the drive motor. A trigger action that is again returned to the off position, or a trigger action that is pulled back to the on position after the trigger is returned from the on position to the off position. A work tool having a control mode for switching the operation of the lock-on mechanism according to the number of times the trigger action is repeated within a predetermined time. The work tool according to any one of claims 1 to 7,
Furthermore, an irradiation device for irradiating the workpiece is provided,
The control unit controls the drive motor to an operating state when the trigger is pulled to the on position, and releases the drive motor when the trigger is returned to the off position. On the other hand, the setting relating to the operating mode of at least one of the drive motor and the irradiation device in the operating state of the drive motor is variable in accordance with the operating mode of the trigger by the finger of the operator holding the hand grip. A work tool characterized by being configured to perform. The main body,
A tip tool that is disposed at the tool tip of the main body, and performs a processing operation of a workpiece; and
A drive motor housed in the main body and driving the tip tool by power supply;
A hand grip provided on the main body and gripped by an operator when using the tool;
The drive motor is urged from an on position where the drive motor is activated to an off position where the operation is released, and is pulled from the off position to the on position by an operator's finger holding the hand grip. A trigger that can be operated,
An irradiation device for irradiating the workpiece;
While the trigger is pulled to the on position, the drive motor is controlled to operate, and the trigger is returned to the off position to control the drive motor to be in an unlocked state, A control unit configured to change a setting related to an operation mode of the irradiation device in an operation state of the drive motor according to an operation mode of the trigger by an operator's finger holding the hand grip;
A work tool characterized by having a configuration comprising: The operating tool according to claim 8 or 9,
The control unit, as a setting related to the operation mode of the irradiation apparatus, trigger action that the trigger is pulled back from the off position to the on position and then returned to the off position, or the trigger is With respect to a trigger action that is pulled back to the on position after the return operation from the on position to the off position, the irradiation device is placed in a non-irradiated state each time the trigger action is performed within a predetermined time. A work tool having a control mode for switching between irradiation states.

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