JP7031277B2 - Electrical equipment - Google Patents

Description

The present invention relates to an electrical device having a trigger switch mechanism.

In electric devices such as power tools having a motor that rotates by electric power, it is widely practiced to provide a grip portion to be gripped by an operator and a trigger switch for speed control in the grip portion to switch the motor on and off. There is. For example, in Patent Document 1, the rotation speed can be adjusted in addition to the on / off control of the motor by pulling the trigger lever, so that the tip tool such as a bit mounted on the tip tool holding portion is rotated.

Japanese Unexamined Patent Publication No. 2009-226513

In the power tool of Patent Document 1, switch operations other than the trigger operation by the trigger lever, for example, the operation of turning on and off the LED light, are performed by pressing a dedicated changeover switch provided at a position away from the trigger switch. Will be. Therefore, an LED changeover switch is provided in order to turn on or off the LED when the operator is in a state where the grip portion can be gripped and the trigger operation can be performed, that is, the work can be performed. The direction of the tool body was changed so that the part faces the operator, or the power tool body was once placed on the floor or the like and then the changeover switch was operated. At this time, the operator often separates the gripping hand from the grip portion and picks it up again so that the LED changeover switch can be easily operated. After the changeover switch operation is completed, the operator grips the grip portion again, so that a trigger There is a problem that the work efficiency is lowered in the work that frequently involves the operation of another switch (sub switch) between the work of operating the lever.

The present invention has been made in view of the above background, and an object thereof is to improve the operability of an electric device having a trigger switch mechanism.
Another object of the present invention is to easily operate the sub switch from the gripped state of the grip portion where the operator can operate the trigger switch in the electric device having the trigger switch and the sub switch without changing the gripped hand. The purpose is to provide electrical equipment that enables it.
Still another object of the present invention is to provide an electric device capable of operating a sub switch by enabling the trigger lever for operating the trigger switch to be operated in a direction different from the conventional one.

The features of the typical inventions disclosed in the present application will be described as follows.
According to one feature of the present invention, in an electric device having a trigger switch that can be operated while gripping the grip portion, a motor that is on / off controlled by the trigger switch, and a control portion that can select a control mode. The grip is provided with a trigger lever for operating the trigger switch so that it can be operated from the outside, and the control mode can be selected by operating the trigger lever in a direction different from the normal operation. .. Further, near the trigger lever, a sub switch capable of selecting a control mode is provided by operating the trigger lever in a direction different from the normal operation. The trigger switch operates a sub switch for selecting a control mode by being operated in a direction different from the normal operation. When the trigger switch is in the off state, the sub switch functions by moving the trigger lever in a direction different from the normal operation, and it is possible to select the control mode of the electric device. In addition, the subswitch was configured to not function when the trigger switch was on.

According to another feature of the present invention, the subswitch is a push switch having a plunger that is pressed by movement of the trigger lever in a direction orthogonal to the normal operation, and the trigger lever is not pulled in the normal operation direction. Sometimes the plunger faces the trigger lever, and when the trigger lever is pulled in the normal operating direction, the trigger lever disengages from the position facing the plunger. Further, the sub switch is pressed upward by the upper surface of the trigger lever, and is arranged so that the sub switch is turned on by operating the sub switch in a direction different from the normal operation of the trigger lever. The control mode operated by the sub switch includes the rotation mode of the motor, and it is preferable to assign a plurality of rotation modes corresponding to the number of intermittent operations of the sub switch. Further, when the lighting means for illuminating the surroundings of the electric device is provided, the lighting mode of the lighting means may be included as the control mode, and a plurality of lighting modes may be assigned according to the number of intermittent operations of the subswitch. Further, a plurality of control modes that can be switched by the sub switch may be provided so that the control unit can switch the control mode assigned to the operation of the sub switch.

According to still another feature of the present invention, a dedicated operation switch for operating a control mode switchable by the sub switch and a display unit for displaying the setting status by the operation switch are provided in the housing of the electric device, and the sub switch is provided. When the control mode is switched by, the setting status corresponding to the control mode is reflected on the display unit. Further, the electric device has a motor and a power transmission mechanism for rotating the tip tool by using the rotational force of the motor, and has a cylindrical body portion in which an output shaft for rotating the tip tool is projected from one end. It has a housing that extends in a direction orthogonal to the vicinity of the center of the fuselage and has a cylindrical grip that is gripped by the operator with one hand, and is triggered near the base of the grip and the fuselage. A trigger lever of the switch was provided, and the sub switch was provided at a position facing the upper surface of the trigger lever and near the lower surface of the body portion. Further, a transparent or translucent protector member is provided on the front side of the body portion of the housing, and a multicolored LED that irradiates in the surface direction of the protector member is provided, and the emission color is changed according to the mode change by the sub switch. I tried to change it.

According to still another feature of the present invention, the electric device has a motor, a trigger switch for controlling the on / off of the motor, a control unit capable of selecting a control mode, and for setting forward rotation and reverse rotation of the motor. It has a forward / reverse switch, and the trigger switch has a main switch for controlling the on / off of the motor, a forward / reverse switch for setting the forward / reverse rotation of the motor, and a sub switch for selecting the control mode. It was configured as follows. This sub-switch is operated in a direction different from the moving direction of the trigger lever during normal operation in order to operate the trigger switch, so that the control mode can be selected.

According to the present invention, it is possible to improve the operability of an electric device having a trigger switch mechanism. In addition, since one of multiple control modes can be set by operating the sub switch multiple times, it is possible to switch various controls other than the trigger switch while holding the grip with one hand. .. Furthermore, since the control switching operation can be performed as before with a dedicated switch that does not use a sub switch, the switching operation can also be performed with the other hand that does not grip the grip portion. The present invention can be applied to an impact driver, other mode selection functions, all electric devices having a changeover switch and a trigger switch, and power tools.

It is a left side view of the power tool 1 which concerns on embodiment of this invention. It is a right side view of the power tool 1 which concerns on embodiment of this invention. It is a partially enlarged sectional view around the trigger lever 12 of FIG. It is a figure explaining the positional relationship between the trigger lever 12 and the sub-switch 20 of FIG. (3) is a diagram showing a state in which the sub switch is operated when the trigger switch 10 is in the off state. It is a table which shows the relationship between the switching target by a subswitch 20 and the operation. It is a flowchart which shows the switching operation procedure by a sub switch 20 (the 1). It is a flowchart which shows the switching operation procedure by a sub switch 20 (the 2). It is a flowchart which shows the switching operation procedure by a sub switch 20 (the 3). It is a figure which shows the trigger switch 60 which concerns on 2nd Embodiment of this invention, (1) is a right side view, (2) is a bottom view. It is a perspective view of the vicinity of the hammer case of the power tool 1A which concerns on the 3rd Embodiment of this invention (partial perspective view). It is a right side view which shows the power tool 201 which concerns on 4th Embodiment of this invention. It is a right side view which shows the power tool 301 which concerns on 5th Embodiment of this invention. It is a right side view which shows the power tool 401 which concerns on 6th Embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following figures, an electric tool having a grip portion will be described as an example of an electric device, and the same parts will be designated by the same reference numerals and repeated description will be omitted. Further, in the present specification, the front-back and up-down directions are described as the directions shown in the drawings.

FIG. 1 is a left side view of the power tool 1 according to the embodiment of the present invention. The power tool 1 is formed by a housing 2 and a metal hammer case 3 mounted on the tip end side of the body portion 2a of the housing 2. The housing 2 has a cylindrical body portion 2a for accommodating a motor and a power transmission mechanism (not shown) and a grip extending in a direction orthogonal to the axis of the body portion 2a so that the operator can grip the housing 2 with one hand. The portion 2b is configured to include a battery pack mounting portion 2c formed at the tip of the grip portion 2b on a side away from the body portion 2a and formed so as to increase the diameter for mounting the battery pack 90. The housing 2 of this embodiment is manufactured by molding a polymer resin such as plastic, and is formed by being divided into two parts on the left and right by a vertical surface passing through the rotation center axis of the motor. On the surface of the housing 2, a soft layer made of an elastomer or the like, which is softer than the hard layer (polymer resin such as plastic) constituting the main body portion of the housing 2, is formed. The soft layer is formed by forming a highly elastic resin as a thin surface layer on a lower layer which is a hard layer which is a constituent material of the housing 2 by using, for example, a two-layer molding technique.

The hammer case 3 has a substantially cup-shaped shape made of integrally molded metal, and a power transmission mechanism (not shown) is housed inside. Here, the power transmission mechanism mainly includes a planetary gear reduction mechanism and a striking mechanism that transmits the driving force of the motor decelerated by the planetary gear reduction mechanism to the output shaft 6 (described later in FIG. 3). .. The entire outer surface of the hammer case 3 is covered with a protector 4 made of synthetic resin. The protector 4 is connected to the tubular portion 4a made of a non-transparent material that covers the periphery of the front opening of the hammer case 3 and the rear side of the tubular portion 4a, and is a transparent or translucent material excluding the lower portion of the hammer case 3. It is composed of an outer surface portion 4b formed so as to cover the outer surface of the above. Here, the metal surface of the hammer case 3 is slightly visible from the outside of the outer surface portion 4b to form a design feature. A through hole 3a through which the output shaft 6 is passed is formed on the front side of the hammer case 3. Inside the output shaft 6, the cross-sectional shape perpendicular to the axial direction is hexagonal, and a mounting hole 6a for mounting a tip tool (not shown) such as a driver bit is formed. Further, a tip tool holding portion 7 for holding the tip tool is provided on the outer portion of the tip of the output shaft 6. The tip tool holding portion 7 is a mechanism for attaching and detaching a tip tool (not shown) for transmitting the power of the motor to a tightening member such as a screw with one touch, and the sleeve portion is on the front side with respect to the housing 2. The tip tool can be attached or detached by moving it to.

A wind window 5a, which is an air intake for introducing outside air for cooling the motor, is provided on the rear side of the body portion 2a of the housing 2. The taken-in outside air is discharged to the outside through the air window 5b, which is an air discharge port for discharging the internal air, after cooling the inverter circuit for driving the motor and the motor. It should be noted that these wind windows 5a and 5b may be arranged in places other than those shown in the drawing.

The grip portion 2b is a portion to be gripped by an operator, and has a substantially cylindrical shape whose central axis extends in the vertical direction. In order to make the grip portion 2b easier for the operator to grip and less slippery, the soft layer on the front side is subjected to uneven processing 9 to increase the contact resistance with the operator's fingers. Near the bases of the body portion 2a and the grip portion 2b of the housing 2, a trigger lever 12 for starting the motor and controlling the rotation speed, and forward / reverse switching for switching the rotation direction of the motor between the forward direction and the reverse direction. A lever 15 is provided. The trigger lever 12 is an operation unit for operating the trigger switch 10 (see FIG. 3) described later, and is configured to be movable in the front-rear direction (Z direction), but in this embodiment, it is in the direction of normal operation (+ Z). The configuration is such that it can be slightly moved in the upward direction (+ Y direction) in addition to the direction). The trigger lever 12 is arranged at a position where it can be easily operated while gripping the grip portion 2b, and the operation surface of the trigger lever 12 projects forward from the opening 8a formed in the grip portion 2b. The forward / reverse switching lever 15 holds members projecting on the left side surface and the right side surface slidably in the left-right direction in the openings 8b and 8c (see FIG. 2 for 8b) at the upper part of the grip portion 2b. At the lower part on the front side of the body portion 2a, a lighting device 24 serving as an irradiation means for irradiating the work portion is provided. A U-shaped translucent transmissive cover is provided on the outer peripheral surface of the lighting device 24, and the light emitted from the light emitting source LED (described later in FIG. 3) is configured to be effectively diffused by the transmissive cover. Ru.

A pack-type battery pack 90 is mounted on the battery pack mounting portion 2c below the grip portion 2b. The battery pack 90 contains four or eight lithium ion secondary batteries and is removable from the main body of the power tool 1. To remove the mounted battery pack 90 from the battery pack mounting portion 2c, press the latch buttons 91a and 91b (see FIG. 2 for 91a) provided on both the left and right sides, and move the battery pack 90 to the front side with respect to the housing 2. Move it. The battery pack mounting portion 2c is a housing portion whose diameter is expanded in the front-rear direction according to the shape of the upper surface of the battery pack 90 to be mounted, and is manufactured by being integrally molded with the grip portion 2b. Below the battery pack mounting portion 2c, a main body side connection terminal for fitting with a connection terminal (not shown) of the battery pack 90 is provided. Further, a control circuit board (not shown) for mounting a control circuit such as a microcomputer is mounted inside the battery pack mounting portion 2c.

A switch panel 40 is provided on the outer surface of the battery pack mounting portion 2c and on the upper portion thereof. The switch panel 40 is provided with a battery level display switch 41 for checking the voltage of the battery pack 90. When the battery remaining amount display switch 41 is pressed, the two LEDs 42a and 42b light up according to the battery remaining amount of the battery pack 90, so that the operator can check the battery remaining amount. Here, when the battery level is sufficient, the two LEDs 42a and 42b light up, and when the battery level is halved, only the LED42a lights up, and the battery level is very low and early. When charging is required, neither LED 42a nor 42b lights up even if the battery level indicator switch 41 is pressed. When the pressing operation is released by releasing the finger from the battery level display switch 41, the lit LEDs 42a and 42b are turned off.

On the right side of the switch panel 40, a light switch 43 for lighting the lighting device 24 is provided. Two lighting modes of the lighting device 24 are prepared, LEDs 44a and 44b for indicating the lighting modes are provided, and display labels 45a and 45b corresponding to them are provided. When the mode indicated by the display label 45a is selected, the LED 44a is lit, and when the mode indicated by the display label 45b is selected, the LED 44b is lit. One of the lighting modes of the lighting device 24 is the "continuous lighting mode" displayed on the display label 45b, and the lighting device 24 is turned on regardless of the operation of the trigger lever 12. However, in order to prevent the battery pack 90 from being consumed due to forgetting to turn off the lighting device 24, the lighting device 24 is controlled to be automatically turned off when the trigger lever 12 is not operated for a certain period of time (for example, 3 minutes). Will be done. The other lighting mode of the lighting device 24 is the "trigger switch interlocking mode", in which the lighting device 24 lights up when the trigger lever 12 is pulled, the trigger lever 12 is released, and after a predetermined short time, for example, 10 seconds. Turns off automatically. In addition, a plurality of LEDs 26 (see FIG. 3) as a light source are provided in the left-right direction, and it is possible to select whether to light only a part of them or all of them, and a mode in which all of the LEDs are turned on to irradiate a wide range is set. It may be additionally set as "wide-angle mode".

Another switch panel 50 is provided on the outer surface of the battery pack mounting portion 2c and on the left side surface. The switch panel 50 is provided with a dedicated tightening mode changeover switch 51 for switching the tightening mode, and it is possible to adjust the tightening force according to the work. The tightening mode is switched in four stages each time the tightening mode changeover switch 51 is pressed. Four LEDs 52a to 52d are provided behind the tightening mode changeover switch 51. The LEDs 52a to 52d are red indicator lamps having small lighting areas having different sizes in the vertical direction, and can indicate the set tightening mode of the power tool 1 by the number of LEDs to be lit. The display label 53a displays "power" indicating the magnitude of the output indicated by the three LEDs 52a to 52c, and the display label 53b displays "eco mode". Here, "soft mode (weak mode)" for delicate work suitable for tightening small-diameter machine screws, "normal mode (medium mode)" suitable for normal screw tightening work, long screws, coach screws, There are four modes: "power mode (strong mode)" suitable for bolt tightening work, and "eco mode" that can reduce the screw tightening speed and reduce the power consumption of the battery when the remaining amount of the battery is low. It will be provided. When the soft mode is set, only the LED 52a is lit, in the normal mode the LEDs 52a and 52b are lit, in the power mode the LEDs 52a to 52c are lit, and in the eco mode the LEDs 52a, 52b and the LED 52c are lit.

FIG. 2 is a right side view of the power tool 1 according to the embodiment of the present invention. The external shape of the power tool 1 is substantially symmetrical and is substantially the same as the shape shown in FIG. 1, but the operation panel is not provided on the right side surface of the battery pack mounting portion 2c. Information transmission for transmitting and receiving the operation history and other management data recorded in the storage device from the operation panel for setting another operation mode of the power tool 1, for example, the microcomputer of the power tool 1 to the external management device. An operation panel provided with a switch or other operation switch and an indicator lamp thereof may be provided.

FIG. 3 is a partially enlarged cross-sectional view of the vicinity of the trigger lever 12. A motor 30 as a drive source is housed inside the body portion 2a of the housing 2, and the output of the motor 30 is transmitted to a striking mechanism including a hammer 32 and an anvil 33 via a planetary gear reduction mechanism 31. The anvil 33 is integrally formed with the output shaft 6, and the planetary gear reduction mechanism 31 and the striking mechanism are housed inside the metal hammer case 3. A lighting device 24 is provided on the lower side near the front end of the hammer case 3.

The lighting device 24 includes an LED 26 mounted on the LED circuit board 25. The number of LEDs 26 to be mounted is arbitrary, but when one directional LED is provided in the center and two LEDs with high diffusivity are provided on both the left and right sides of the LED 26, only the central LED 26 is turned on. Wide irradiation (wide-angle mode) may be used in which the spot light has directivity and is diffused in the left-right and downward directions when two LEDs (not shown) are turned on. Further, all the LED lights may be turned on. The LED circuit board 25 is housed in a cover 27 made of synthetic resin. The cover 27 is a separate type from the housing 2, and is attached so as to be sandwiched between recesses provided in the joint portion of the left-right split type housing 2. The outer surface of the cover 27 is curved from the left side surface to the front surface of the housing 2 and from the entire surface to the right side surface with the same curvature as the outer surface of the housing 2 so as to form a U shape, and is made of a transparent or translucent synthetic resin. Manufactured. The emission color of the LED 26 may be white, but a three-color LED or a multicolor LED that can irradiate with any color may be used. The type of light source of the lighting device 24 is arbitrary, and not only LEDs but also surface light emitting elements and other light emitting means may be used.

The trigger switch 10 includes a switch main body 11, a sliding shaft 13 that can slide in the front-rear direction with respect to the switch main body 11, a trigger lever 12 fixed to the front end of the sliding shaft 13, and a switch main body 11. It is configured to include a switching operation unit 14 capable of swinging in the left-right direction. The trigger lever 12 acts as an operating lever for speed control of the motor 30, and the rotation speed of the motor 30 is adjusted according to the pulling amount thereof. The sliding shaft 13 is held so as to be slidable in the front-rear direction with respect to the switch main body 11, and is known by contacting the vicinity of the rear end of the sliding shaft 13 with a contact mechanism (not shown) inside the housing of the switch main body 11. Realize the speed control switch means. The switch main body 11 is held by the fixing ribs 19a to 19c formed on the inner wall surface of the housing 2. Here, the wiring extending from the switch main body 11 and the illustration are omitted. Guide ribs 16 are provided on the upper and lower sides of the sliding shaft 13 connected to the trigger lever 12 to allow the sliding shaft 13 to slide satisfactorily in the front-rear direction. The guide rib 16 is a fixing member extending from the switch main body 11. Above the upper guide rib 16, a switching operation unit 14 operated by the forward / reverse switching lever 15 is provided. The switching operation unit 14 is an operation unit of a forward / reverse switch for setting forward rotation and reverse rotation of the motor 30, and the forward / reverse switch is one of the switch mechanisms provided in the switch main body portion 11. An operation piece 14a extending upward is provided at the tip of the switching operation unit 14. The operation piece 14a is housed inside a locking groove 15a provided at the center of the forward / reverse switching lever 15 in the left-right direction, and the switching operation unit 14 swings in accordance with the movement of the forward / reverse switching lever 15 in the left-right direction.

The trigger lever 12 can move from the front to the rear as shown by the arrow 81. The position shown in FIG. 3 is a normal position where the trigger lever 12 is located at the front end, and the trigger lever 12 moves to the rear side by being operated by an operator from that position. When the trigger lever 12 moves backward, the sliding shaft 13 also moves backward in conjunction with it, and the position of the rear end of the sliding shaft 13 changes inside the switch main body 11, so that the trigger switch mechanism operates (specifically). The explanation of the configuration is omitted). When the movement to the rear side by the operator is released, the sliding shaft 13 is moved to the front side by a spring (not shown), and the trigger lever 12 returns to the original position shown in FIG. In this embodiment, when the trigger lever 12 is in the normal position shown in FIG. 3, it is configured to be able to move slightly upward as shown by the arrow 82.

A sub switch 20 is provided at a portion of the upper surface of the trigger lever 12 facing the vicinity of the front end. The sub switch 20 is a push switch that is turned on by pushing the plunger 21 in the pressing direction (upward) and turned off by releasing the operation of the plunger 21, and is used as a mode selection switch in this embodiment. .. As can be understood from this figure, when the trigger lever 12 is in the normal position as shown in FIG. 3, there is a predetermined gap between the trigger lever 12 and the upper end surface of the opening 8a, and the plunger 21 is in the gap. And the upper surface of the trigger lever 12 is kept in a non-contact state. By configuring the trigger mechanism as described above, the rotation of the motor 30 can be turned on by operating (pushing) the operation surface 12a of the trigger lever 12 in the direction of the arrow 81 on the inner side of the grip portion 2b.

Since the trigger switch mechanism is also a speed control switch, the rotation speed of the motor 30 changes according to the amount of operation of the trigger lever 12 on the arrow 81. On the other hand, when the trigger lever 12 is not moved to the arrow 81, that is, in the state shown in FIG. 3, the lower surface 12c of the trigger lever 12 is pushed upward by an index finger or the like, and the trigger lever 12 is operated in the direction of the arrow 82. , The sub switch 20 is turned on. The operating principle of the sub switch 20 will be further described with reference to FIG.

FIG. 4 is a diagram for explaining the positional relationship between the trigger lever 12 and the sub switch 20, and FIG. 4 is a diagram showing a state in which the trigger switch 10 is on. When the trigger lever 12 is moved in the direction of the arrow 81 by a predetermined amount or more, the switch device (not shown) of the switch main body 11 is turned on and the output of the variable resistance switch (not shown) is output to the trigger lever 12. It changes according to the amount of movement (stroke amount). FIG. 4 shows a position (trigger ON position) on the lower side of the operation surface 12a where the trigger switch 10 is turned on and a normal position (trigger OFF position). As can be seen in FIG. 4 (1), when the trigger lever 12 moves to the trigger ON position, the front end portion of the upper surface 12b of the trigger lever 12 deviates from the position facing the plunger 21. Therefore, even if the trigger lever 12 can be moved upward in that state, the sub switch 20 will not be turned on because it does not abut on the plunger 21. FIG. 4 (2) is a diagram showing the relationship between the on position and the off position of the trigger lever 12. The sub switch 20 can be operated when the position of the upper surface of the trigger lever 12 is at 12b, and the sub switch 20 cannot be operated when the position of the upper surface of the trigger lever 12 at the trigger ON position is at 12b'. You can see that. When the operator releases the operation of the trigger lever 12 from the state where the trigger is turned on in FIG. 4 (2), the upward force (force in the directions of arrows 82 and 83) applied to the trigger lever 12 is also released. However, at that time, some kind of urging means may be provided inside the trigger lever 12 so that the trigger lever 12 is in a lower position away from the sub switch 20.

FIG. 4 (3) is a diagram showing a state in which the sub switch is operated when the trigger switch 10 is in the off state. Here, the operator moves the curved portion near the upper end of the operation surface 12a upward (in the direction of arrow 83) with his / her finger, or moves the lower surface 12c (see FIG. 3) of the trigger lever 12 upward (arrow) with his / her finger. Move in the direction of 82). The trigger lever 12 is configured to be able to slide or swing slightly in the vertical direction, and the plunger 21 is brought into contact with the plunger 21 and the upper surface (a surface parallel to the normal moving direction of the trigger lever 12) 12b. Pressed upward, the sub switch 20 is turned on. That is, the sub switch 20 functions by moving the trigger lever 12 in a direction different from the normal operation (Y direction in FIG. 1). When the trigger lever 12 is operated in the direction of the arrow 81 (normal operation direction) from this state, the trigger lever 12 is separated from the position facing the plunger 21 before the trigger switch 10 is turned on, so that the sub Since the switch 20 is turned off, it is possible to prevent both operations from being performed at the same time, and it is possible to perform exclusive control of the two switches (10, 20) by a mechanical configuration. The power tool 1 of this embodiment has a control unit using a microcomputer, and the outputs of both the trigger switch 10 and the sub switch 20 are input to the control unit. Therefore, instead of performing exclusive control between the two switches by the mechanical configuration as described with reference to FIG. 4, exclusive control is performed by electrical control, for example, the outputs of both the trigger switch 10 and the sub switch 20. Is input to the control unit, the microcomputer may adopt only the signal of the trigger switch 10 and perform control (priority control) so as to ignore the signal of the sub switch 20.

FIG. 5 is a table showing the relationship between the switching target by the sub switch 20 and the operation. In this embodiment, the function of switching when the sub switch 20 is operated can be assigned for switching various modes. Here, the normal rotation and reverse rotation settings of the motor, the tightening mode setting function, the on / off setting function of the lighting device 24, the information transmission setting function from the power tool 1 to the management device, and the start operation function of the computer (microcomputer) are provided. In the setting of forward rotation and reverse rotation of the motor, what was operated by the forward / reverse switching lever 15 can be realized by operating the sub switch 20 by the trigger lever 12. In the tightening mode setting, what is operated by pressing the tightening mode changeover switch 51 can be realized by operating the sub switch 20 by the trigger lever 12. Here, five stages from circle 1 to circle 5 are assigned as operations. If the operator moves the trigger lever 12 upward only once and immediately releases it, nothing happens. If it is moved upward twice intermittently, set the tightening mode to "weak". If it is moved upward three or four times intermittently, it is set to "medium" mode and "strong" mode, respectively. Further, when the trigger lever 12 is moved upward for a predetermined time or longer, the eco mode is set. At this time, the detection circuit (not shown) that detects the output of the sub switch 20 outputs the signals indicating 0 to 4 to the microcomputer (not shown) included in the control unit.

The on / off setting function of the lighting device 24 is executed from round 2 to round 6 depending on the number of times the sub switch 20 is pressed. When pressed only once as shown in circle 2, the current mode is indicated. This mode display is realized by lighting the LED 44a or 44b or lighting the LED 28 described later in FIG. As shown by the circle 3, when the sub switch 20 is pressed twice at short intervals, the lighting device 24 is turned on. As shown by the circle 4, when the sub switch 20 is pressed twice at short intervals while the LED 28 is lit, the lighting device 24 is turned off. Further, as shown by the circle 5, when the sub switch 20 is pressed intermittently three times at short intervals, the lighting device 24 enters the switch interlocking mode. Further, as shown by the circle 6, when the sub switch 20 is pressed and held, the lighting device 24 is turned on in the wide-angle mode as shown by the circle 6.

Information transmission is a function of transmitting information from the power tool 1 to an external management device (not shown). Pressing the subswitch 20 only once will send information, and pressing it twice will result in an emergency call. When the sub switch 20 is in the sleep state when the sub switch 20 is not pressed, the computer can be started by pressing the sub switch 20 only once to wake up from the sleep state and become the active state.

Next, the switching operation shown in FIG. 5 will be described with reference to the flowcharts of FIGS. 6 to 8. FIG. 6 is a flowchart showing a procedure for switching the tightening mode by the sub switch 20 (No. 1). In this embodiment, the sub switch 20 is operated by moving the trigger lever 12 upward. The flowchart of FIG. 6 is executed when the upward operation of the trigger lever 12 is detected when the power tool 1 is in the standby state (step 100), that is, when the motor 30 is stopped and the output shaft 6 is not rotating. .. First, when the trigger lever 12 is pressed twice at short intervals (step 101), the microcomputer of the control unit (not shown) sets the weak mode as the tightening mode (step 102). When the sub switch 20 is operated while the motor 30 of the power tool 1 is rotating and the trigger lever 12 is pulled (usually, such a state does not occur), the microcomputer ignores the operation of the sub switch 20. Therefore, the switching operation according to the operation is not performed. Further, when the power tool 1 pushes the trigger lever 12 upward only once in the standby state, it is highly possible that the trigger lever 12 has moved upward due to an erroneous operation or some reason, so that the microcomputer is a sub switch 20. The operation is ignored and the switching operation according to the operation is not performed. After step 102, when the operator operates the trigger lever 12 to turn on the trigger, the microcomputer of the control unit controls the rotation of the motor 30 in the weak mode and performs the work using the tip tool (step). 103, 104). When the work is completed and the trigger is turned off, the process returns to the standby state of step 100. Although not shown here, if the trigger lever 12 is pulled without operating the sub switch 20 in step 100, the rotation control of the motor 30 is performed in the operation mode set at that time. It will be.

When the upward movement of the trigger lever 12 is pressed three times in the state of step 100 (step 105), the microcomputer of the control unit (not shown) sets the middle mode as the tightening mode (step 106). After that, when the trigger is turned on, the rotation control of the motor 30 in the middle mode is performed (steps 107 and 108). When the work is completed and the trigger is turned off, the process returns to the standby state of step 100.
When the upward movement of the trigger lever 12 is pressed four times in the state of step 100 (step 109), the microcomputer of the control unit (not shown) sets the strong mode as the tightening mode (step 110). After that, when the trigger is turned on, the rotation control of the motor 30 in the strong mode is performed (steps 111 and 112). When the work is completed and the trigger is turned off, the process returns to the standby state of step 100.
When the trigger lever 12 is pressed and held upward for 2 seconds or longer in the state of step 100 (step 113), the microcomputer of the control unit (not shown) sets the eco mode as the tightening mode (step 114). ). After that, when the trigger is turned on, the rotation control of the motor 30 in the eco mode is performed (steps 115 and 116). When the work is completed and the trigger is turned off, the process returns to the standby state of step 100.
As described above, in this embodiment, the mode is switched by one step each time the sub switch 20 is pressed. Therefore, the mode can be directly switched to the desired rotation mode according to the number of intermittent operations of the sub switch in a series of operations. Can be done. The operator can intuitively and surely set the tightening mode. For example, if the operator wants to switch to the medium mode even if he / she does not know what the current operation mode is, he / she lowers the trigger lever 12 at short intervals with the trigger lever 12 not pulled. If you operate it twice upward from, it will be set to the middle mode. In this way, since the mode is assigned according to the number of times the sub switch 20 is pressed, it is possible to quickly switch to an arbitrary mode regardless of the current mode. It is also possible to configure the rotation mode to change stepwise from weak → medium → strong → weak each time the sub switch 20 is pressed.

FIG. 7 is a flowchart showing an operation procedure when the information transmission mode switching operation is assigned to the sub switch 20. Here, when the trigger lever 12 of the power tool 1 is in a standby state where it is not pulled (step 120), the operator moves the trigger lever 12 upward only once and presses the sub switch 20, and then the power tool Information is transmitted from 1 to an external management device (not shown) (steps 121 and 124). Here, the information transmitted is screw tightening torque, rotation speed, remaining battery level, GPS position information, and the like. The management device that receives the information can grasp who, where, what kind of work, and how much at a remote location.
When the trigger lever 12 of the power tool 1 is in the standby state where it is not pulled (step 120), the operator moves the trigger lever 12 upward twice and presses the sub switch 20 twice, and then the power tool 1 starts. An emergency call is made to an external management device (steps 122, 125). By this emergency call, an emergency is transmitted to an external management device optically by blinking of the lighting device 24 or electrically by using wireless communication technology.
When the trigger lever 12 of the power tool 1 is pulled without operating the sub switch 20, the trigger is turned on (step 123), and the motor 30 is rotated by the set tightening mode (step 126). When the work is completed and the trigger is turned off, the process returns to the standby state of step 120.

FIG. 8 is a flowchart showing a procedure for switching the lighting device 24 on or off by the sub switch 20. Here, by pressing the sub switch 20 once from the tool standby state (step 130), the microcomputer of the control unit displays the current lighting mode in the lighting color of the lighting device 24 (steps 131 and 135). By displaying the current mode by the color of the lighting device 24 in this way, the current display mode can be confirmed without adjusting the line of sight to the switch panel 40.
Next, by pressing the sub switch 20 again, that is, by operating the sub switch 20 twice in total, the lighting device 24 is turned on (steps 132, 136). This state continues until the lighting device 24 is turned off again, and the lighting device 24 is turned off by pressing the sub switch 20 twice at short intervals in the lighting state (steps 137, 138). The lighting device 24 can be turned on and off by pressing the light switch 43 of the switch panel 40, and the operator may operate either switch (sub switch 20, light switch 43). , Convenience is improved.
When the sub switch 20 is pressed three times with "click, click, click" at short intervals, the lighting mode of the lighting device 24 is switched to the interlocking mode with the trigger switch 10 (steps 133, 139). Finally, when the sub switch 20 is pressed and held for a long time, the lighting device 24 is turned on in a state where the lighting mode is switched to the wide-angle mode (steps 134 and 140).

According to this embodiment, in an electric device having a mode selection function, even when the main switch (trigger switch) and the mode changeover switch are arranged separately, the mode is used by using the trigger lever in the non-operated state. It is now possible to perform switching operations. As a result, the operator can perform a plurality of operations with one hand while holding the grip portion without changing the tool, and the operability is greatly improved. Furthermore, since the sub switch does not function while the main switch is being operated, the sub switch does not function even if the main switch is unintentionally operated in the direction in which the sub switch is turned on while working with electrical equipment. It is possible to avoid switching modes during.

9 is a diagram showing a trigger switch 60 according to a second embodiment of the present invention, (1) is a right side view, and (2) is a bottom view. The shape of the trigger lever 62 is the same as that of the trigger lever 12 shown in FIG. 3, and the upper surface 62b and the lower surface 62c are planes parallel to the moving direction of the trigger lever 62. Here, the description of the sliding shaft portion of the trigger switch 60 that operates in accordance with the normal pulling operation of the trigger lever 62, that is, the movement of the arrow 80 is omitted, and the first subswitch 70 and the first subswitch 70 additionally provided are omitted. The outline of the two subswitch sets (75, 77) and their operating functions will be mainly described. The overall configuration of the trigger switch 60 includes a switch main body 61 and a trigger lever 62 arranged on the front side of the switch main body 61, and is a switch as compared with the trigger switch 10 shown in the first embodiment. Swinging arms 65 and 67 fixed to the main body 61 side are additionally provided. The swing arm 65 guides the sliding of the trigger lever 62 that moves in the direction of the arrow 80, and is slightly rotatable in the direction of the arrow 74 about the rotation fulcrum 66. A sub switch 70 is provided on the lower side near the rear end of the swing arm 65. The sub switch 70 is provided in place of the sub switch 20 of the first embodiment, and the plunger 71 of the push type sub switch 70 is pressed by slightly moving the trigger lever 62 in the direction of the arrow 81. This turns on the sub switch 70. The output of the sub switch 70 is output to a microcomputer (not shown). The front end side of the swing arm 65 is located inside the rail groove extending in the front-rear direction inside the trigger lever 62, and the trigger lever 62 can move relative to the swing arm 65 that does not move in the front-rear direction. It is composed. Further, by urging the swing arm 65 in a predetermined direction (here, in the clockwise direction) with a spring or the like, the sub switch 70 is automatically turned off when the operator releases the trigger lever 62. Configure. By realizing the configuration in which the sub switch 20 is replaced by the configuration of FIG. 9 (1) in the unit of the trigger switch 60, the function of the present invention can be easily performed by simply replacing the trigger switch unit of the conventional power tool. realizable.

FIG. 9 (2) is a bottom view of the trigger switch 60. Here, not only the slight movement of the trigger lever 62 in the upward direction (Y direction in FIG. 1) shown in (1) but also the movement in the left-right direction (X direction in FIG. 1) is possible, and the movement is linked to the movement in the left-right direction. Two sub-switches 75 and 77 are provided. The swing arm 67 is provided separately from the swing arm 65, and is provided near the bottom surface of the switch body so as to be slightly rotatable in the direction of the arrow 79 about the rotation fulcrum 68. The rear ends of the swing arm 67 are provided with convex portions 67a and 67b protruding on both the left and right sides, and the subswitches 75 and 77 are provided at positions facing the convex portions 67a and 67b. The subswitches 75 and 77 are further added to the subswitch 70, and both are push switches that are turned on when the plungers 76 and 78 are pressed. When the trigger lever 62 is slightly moved in the direction of the arrow 82a, the plunger 76 is pushed and the sub switch 75 is turned on. Similarly, when the trigger lever 62 is slightly moved in the direction of the arrow 82b, the plunger 78 is pushed and the sub switch 77 is turned on.

By providing further subswitches 75 and 77 as shown in FIG. 9 (2), the forward / reverse rotation setting of the motor, the tightening mode setting function described with reference to FIG. 5, and the on / off setting function of the lighting device 24 can be obtained. Various controls such as assigning the information transmission setting function from the power tool 1 to the external management device to the respective subswitches 70, 75, 77 become possible. The movement to the arrows 82a and 82b is assumed to be movable only when the trigger lever 62 is not moved in the direction of the arrow 80, and if the trigger lever 62 is moved in the direction of the arrow 80 even a little, the movement to the arrows 82a and 82b is possible. It is good to configure it so that it cannot be done. Further, a strong force is required to move the trigger lever 62 in the direction of the arrow 82a or the arrow 82b, and when the pressure in the direction of the arrow 82a or the arrow 82b is released, FIG. 9 (2) shows. It is preferable to configure it so that it returns to the indicated neutral position.

As described above, according to the second embodiment, it has become possible to realize various control mode switching operations by using the trigger lever 62. Further, in the second embodiment, the trigger switch, which is a speed control switch, has a built-in mode selection switch so that the motor speed control operation and the mode selection operation can be performed depending on the operation direction. Therefore, only the trigger switch unit is used. The present invention can be easily realized without any improvement on the housing side by simply replacing the. In the configuration shown in FIG. 9, it is not necessary to adopt the configuration of (1) and the configuration of (2) at the same time, and only the configuration of (1) or only the configuration of (2) is adopted. Is also good.

FIG. 10 is a perspective view of the vicinity of the hammer case 3 of the power tool 1A according to the third embodiment of the present invention (partial perspective view). The shaded portion is the outer surface portion 4b of the protector 4 which is formed almost transparently. The outer surface of the metal hammer case 3 can be seen through the inside of the outer surface portion 4b. In the third embodiment, the LED 28 that irradiates the resin portion of the protector 4 upward is arranged near the lower end of the outer surface portion 4b. Since the protector 4 is symmetrical, it is preferable to arrange the LED 28 also on the lower right side of the protector 4. It is preferable that the LED 28 is a color LED that can be lit by multiple colors, and the on / off and lit color of the lit are controlled by a microcomputer of a control unit (not shown). The lighting color of the LED 28 can be configured to be switched in conjunction with the setting mode by the sub switch 20. For example, when the setting by the sub switch 20 is the tightening mode, if the color is assigned to change the color such as green in the weak mode, yellow in the medium mode, and red in the strong mode, the operator can change the emission color of the protector 4. By looking at it, it is possible to easily identify the current setting mode without looking at the switch panel 40 portion. In particular, when the LED 28 is turned on from the lower edge portion of the outer surface portion 4b of the protector 4 toward the upper surface direction, almost the entire outer surface portion 4b emits light in that color, so that the visibility is further improved. ..

The present invention has been described above based on the first to third embodiments, but all of them have been applied to impact tools. However, the electric device is not limited to the impact tool, and can be similarly applied to the grip portion and other electric devices as long as the grip portion has a trigger switch. FIG. 11 shows an example of application to another impact wrench to which the present invention is applied. The housing 202 of the power tool 201 has a body portion 202a, a grip portion 202b, and a power supply circuit accommodating portion 202c. A motor (not shown), a deceleration mechanism, and an impact type striking mechanism are housed in the body portion 202a. The tip tool mounting portion 206 at the tip of the output shaft is a so-called "square drive portion" in which four fitting surfaces are formed on the side surface for mounting a socket (not shown). The cross-sectional shape orthogonal to the axis of the tip tool mounting portion 206 is substantially square, and a pin hole 206a as a through hole is formed at the center of two mating surfaces facing each other among the four fitting surfaces. A grip portion 202b is formed below the substantially central portion of the body portion 202a, and a trigger switch 10 is provided near the base of the grip portion 202b with the body portion 202a. The trigger switch 10 is provided with a switch main body, a sliding shaft 13, and a trigger lever 12, and the configuration in which the trigger lever 12 projects forward from the opening 208 formed in the housing 202 is the first embodiment. Same as the example. A sub switch 20 is provided on the upper part of the trigger lever 12, and the sub switch 20 is provided so that the plunger 21 faces downward. The power supply circuit 240 is accommodated in the power supply circuit accommodating portion 202c, a switch panel 230 is provided on the upper side surface of the power supply circuit accommodating portion 202c, and the setting mode of the motor can be set by the switch panel 230 as well. A power cord 250 for supplying commercial AC power is provided on the lower surface of the power circuit accommodating portion 202c.

FIG. 12 is a right side view showing a driver drill according to a fifth embodiment of the present invention. The housing of the power tool 301, which is a driver drill, also has substantially the same shape as the power tool 1 of the first embodiment, and the housing 302 has a body portion 302a, a grip portion 302b, and a battery pack mounting portion 302c. A motor (not shown), a deceleration mechanism, and a clutch mechanism are housed in the body portion 202a. The reduction mechanism is provided with a shift knob 305 for switching the reduction ratio. A clutch dial 306 for setting the tightening torque of the clutch mechanism is provided on the front side of the body portion 302a. A drill chuck 307 is provided on the front side of the front opening of the body portion 302a. The operator can open the claws by loosening the cylindrical sleeve portion of the drill chuck 307 by hand to attach a tip tool (not shown), and fix the tip tool by tightening the sleeve portion by hand. A trigger switch 10 is provided near the base of the grip portion 302b with the body portion 302a. The trigger switch 10 is provided with a switch main body, a sliding shaft 13, and a trigger lever 12, and the configuration in which the trigger lever 12 projects forward from the opening 308 formed in the housing 302 is the first embodiment. Same as the example. A sub switch 20 is provided on the upper part of the trigger lever 12, and the sub switch 20 is provided on the plunger 21 downward. The battery pack 90 is mounted on the battery pack mounting portion 302c. A switch panel 330 is provided on the upper side surface of the battery pack mounting portion 302c, and the setting mode of the motor can also be set by the switch panel 330. A multicolor LED light 340 is provided on the front side of the switch panel 330. In this embodiment, since there is no space for LED in the vicinity of the sub switch 20 due to the provision of the clutch dial 306, a multicolor LED light 340 as a lighting means is provided in the battery pack mounting portion 302c. The lighting of the multicolor LED light 340 can be controlled by a light switch (not shown) provided on the switch panel 330. The operation of the light switch can be the same as that of the light switch 43 described in the first embodiment.

FIG. 13 is a right side view showing the power tool 401 according to the sixth embodiment of the present invention. The basic configuration is the same as that of the power tool 1 of the first embodiment. The housing of the power tool 401 also has substantially the same shape as the power tool 1 of the first embodiment, and the housing 2 has a body portion 2a, a grip portion 2b, and a battery pack mounting portion 2c. Since the configuration of the trigger switch having the trigger lever 12 and the arrangement of the sub switches are the same as those in the first embodiment, the description thereof will be omitted. In the power tool 401, the switch panel 430 is provided on the left side surface of the battery pack mounting portion 2c. The switch panel 430 is provided with a tightening mode changeover switch 436, and the tightening force can be adjusted according to the work. The tightening mode is switched in four stages each time the tightening mode changeover switch 436 is pressed. Four LEDs 437a to 437d are provided behind the tightening mode changeover switch 436. LEDs 437a to 437d are red indicator lamps having small lighting areas having different sizes in the vertical direction, and indicate the tightening mode set by the power tool 401 depending on the number of LEDs to be lit. In this embodiment, a display panel 460 having four LEDs 467a to 467d is further provided above the trigger lever 12. The display panel 460 is an additional display unit that displays the setting status by the operation switch. The LEDs 467a to 467d displayed on the display panel 460 are the same as the four LEDs 437a to 437d provided on the switch panel 430, and they are displayed in conjunction with each other. By providing the display panel 460 above the trigger lever 12 in this way, the operator can easily identify the contents of the operation of the sub switch by the trigger lever 12 by looking at the display panel 460 arranged near the fingertip. When the display panel 460 is provided, the LEDs 437a to 437d in the switch panel 430 may be omitted and only the display panel 460 may be displayed. Further, the operation panel may be configured by a liquid crystal display or an EL display, and the contents operated by either the switch panel or the sub switch may be displayed on the liquid crystal display provided in the display panel 460 portion.

Although the present invention has been described above based on a plurality of examples, the present invention is not limited to the above-mentioned examples, and various modifications can be made without departing from the spirit of the present invention. For example, the sub switch 20 is not provided on the lower side of the body portion 2a of the housing 2 and on the upper side of the trigger lever 12, but is a contact or non-contact type within a range that can be reached by a finger when the operator grips the grip portion 2b. The sensor may be provided so as to operate the same as the operation of the sub switch by approaching or touching the sensor.

1, 1A Power tool 2 Housing 2a Body part 2b Grip part 2c Battery pack mounting part 3 Hammer case 3a Through hole 4 Protector 4a Non-transparent cylinder part 4b Outer surface part 5a Air window (air inlet) 5b Air window (air outlet) 6 Output Shaft 6a Mounting hole 7 Tip tool holding part 8a, 8b, 8c Opening part 9 Concavo-convex processing 10 Trigger switch 11 Switch body part 12 Trigger lever 12a Operation surface 12b Top surface 12c Bottom surface 13 Sliding shaft 14 Switching operation part 14a Operation piece 15 Forward and reverse Switching lever 15a Locking groove 16 Guide ribs 19a to 19c Fixed ribs 20 Subswitch 21 Plunger 24 Lighting device 25 LED circuit board 26 LED
27 Cover 28 LED 30 Motor 31 Deceleration mechanism 32 Hammer 33 Anvil 40 Switch panel 41 Battery level indicator switch 42a, 42b LED
43 Light switch 44a, 44b LED
45a, 45b Display label 50 Switch panel 51 Tightening mode changeover switch 52a to 52d LED
53a, 53b Display label 60 Trigger switch 61 Switch body 62 Trigger lever 65, 67 Swing arm 66, 68 Rotation fulcrum 67a, 67b Convex 70 Sub switch 71 Plunger 75, 77 Sub switch 76, 78 Plunger 90 Battery pack 91a , 91b Latch button 201 Power tool 202 Housing 202a Body part 202b Grip part 202c Power supply circuit housing part 206 Tip tool mounting part 206a Pin hole 208 Opening 230 Switch panel 240 Power supply circuit 250 Power cord 301 Power tool 302 Housing 302a Body part 302b Grip Part 302c Battery pack mounting part 305 Shift knob 306 Clutch dial 307 Drill chuck 308 Opening 330 Switch panel 340 Multicolor LED light 401 Power tool 436 Tightening mode changeover switch 437a to 437d LED
460 Display panel 467a-467d LED

Claims (10)

In an electric device having a trigger switch that can be operated while gripping the grip portion, a motor that is on / off controlled by the trigger switch, and a control unit that can select a control mode.
The grip portion is provided with a trigger lever for operating the trigger switch so that it can be operated from the outside.
A sub-switch capable of selecting the control mode by operating the trigger lever in a direction different from the normal operation is provided, and the sub-switch is configured not to function when the trigger switch is in the ON state. Characterized electrical equipment. The claim is characterized in that the sub switch is provided near the trigger lever, and the sub switch functions by operating the trigger lever in a direction different from the normal operation when the trigger switch is in the off state. Item 1. The electric device according to Item 1. The sub-switch is a push switch having a plunger that is pressed by moving the trigger lever in a direction orthogonal to the normal operation, and the plunger is the trigger lever when the trigger lever is not pulled in the normal operation direction. The electric device according to claim 1 or 2, wherein when the trigger lever is pulled in the normal operation direction, the trigger lever is separated from the position facing the plunger. The sub switch is pressed upward by the upper surface of the trigger lever.
The electric device according to claim 2 or 3, wherein the sub switch is arranged so as to be turned on by operating the trigger lever in a direction different from the normal operation. The electric device according to any one of claims 2 to 4, wherein the control mode includes a rotation mode of the motor, and a plurality of rotation modes are assigned corresponding to the number of intermittent operations of the subswitch. .. It has a lighting means that illuminates the surroundings of the electrical equipment.
The electricity according to any one of claims 2 to 5, wherein the control mode includes a lighting mode of the lighting means, and a plurality of lighting modes are respectively assigned according to the number of intermittent operations of the subswitch. machine. The invention according to any one of claims 2 to 6, wherein the control unit has a plurality of control modes that can be switched by the sub switch, and the control unit can switch the control mode assigned to the operation of the sub switch. Electrical equipment. A dedicated operation switch for operating the control mode, which can be switched by the sub switch, and a display unit for displaying the setting status by the operation switch are provided in the housing of the electric device.
The electric device according to claim 7, wherein when the control mode is switched by the sub switch, the setting status corresponding to the control mode is reflected on the display unit. The electric device has the motor and a power transmission mechanism for rotating the tip tool by utilizing the rotational force of the motor.
A cylindrical body portion that projects an output shaft for rotating the tip tool from one end, and a cylindrical body portion that extends in a direction orthogonal to the substantially center of the body portion and is gripped by an operator with one hand. Has a housing in which the grip portion of the above is formed,
The trigger lever of the trigger switch is provided near the base of the grip portion and the body portion.
The electric device according to any one of claims 2 to 8, wherein the sub switch is located at a position facing the upper surface of the trigger lever and is provided on the lower surface of the body portion. A transparent or translucent protector member is provided on the front side of the body portion of the housing, and a multicolor LED that illuminates in the surface direction of the protector member is provided, and light is emitted in response to a mode change by the subswitch. The electric device according to claim 9, wherein the color is changed.

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