WO2019150651A1 - Electrically powered tool - Google Patents

Abstract

This electrically powered tool is provided with: a body section (4) including a motor and a motor housing (2A) which contains the motor; a battery mounting section (29) to which and from which a battery (31) for driving the motor can be mounted and removed; a handle section (6) which is disposed between the motor housing (2A) and the battery mounting section (29); and an operating section which is disposed on at least one of the motor housing (2A), the battery mounting section (29), or the handle section (6), and which enables a first operation for changing an operating state. The operating section changes the state of rotation of the motor when a second operation different from the first operation is performed.

Description

Electric tool

The present invention relates to an electric tool including an impact driver.

For example, a power tool including an impact driver is provided with switches and buttons that are operated to change the rotational speed of the motor (for example, see Patent Document 1). In the technique described in Patent Document 1, a switch panel is disposed below the handle portion.

Japanese Patent No. 56277738

However, if a switch or button to be operated to change the rotation speed of the motor is newly arranged, there is a possibility that the electric tool becomes large.

An object of an aspect of the present invention is to provide an electric tool that can change the rotation speed of a motor without increasing the size.

According to an aspect of the present invention, a main body including a motor and a motor housing that houses the motor, a battery mounting part that can attach and detach a battery that drives the motor, and a gap between the motor housing and the battery mounting part. A handle portion disposed; and an operation portion disposed in at least one of the motor housing, the battery mounting portion, and the handle portion and capable of performing a first operation for changing an operation state. When a second operation having an operation mode different from that of the first operation is performed, an electric tool for changing the rotation state of the motor is provided.

According to the aspect of the present invention, an electric tool capable of changing the rotation speed of the motor without increasing the size is provided.

FIG. 1 is a perspective view of an impact driver according to the first embodiment as viewed from the front. FIG. 2 is a perspective view of the impact driver according to the first embodiment as viewed from the rear. FIG. 3 is a side sectional view of the impact driver according to the first embodiment. FIG. 4 is a functional block diagram showing the impact driver according to the first embodiment. FIG. 5 is a plan view of the operation panel of the impact driver according to the first embodiment. FIG. 6 is a schematic view of a trigger operation member of the impact driver according to the first embodiment. FIG. 7 is a plan view of the operation panel of the impact driver according to the second embodiment. FIG. 8 is a diagram illustrating an example of an operation in which a plurality of operation members of the impact driver according to the third embodiment are combined. FIG. 9 is a schematic view of a forward / reverse switching lever of an impact driver according to the fourth embodiment. FIG. 10 is a schematic diagram of a forward / reverse switching lever and a switch portion of an impact driver according to the fourth embodiment. FIG. 11 is a functional block diagram showing an impact driver according to the fourth embodiment. FIG. 12 is a schematic view of a trigger operation member of an impact driver according to the fifth embodiment. FIG. 13: is the perspective view which looked at the driver drill which concerns on 6th embodiment from the front. FIG. 14 is a perspective view of the driver drill according to the sixth embodiment viewed from the rear. FIG. 15 is a functional block diagram showing a driver drill according to the sixth embodiment. FIG. 16 is a schematic diagram of a speed change switch of a driver drill according to the sixth embodiment. FIG. 17 is a schematic view of a speed change switch and a hall element of a driver drill according to a sixth embodiment. FIG. 18 is a schematic view of a tightening force switching ring of a driver drill according to a sixth embodiment. FIG. 19 is a schematic view of a tightening force switching ring and a Hall element of a driver drill according to a sixth embodiment. FIG. 20 is a perspective view of the screw driver according to the seventh embodiment as viewed from the front. FIG. 21 is a perspective view of the screw driver according to the seventh embodiment as viewed from the rear. FIG. 22 is a functional block diagram showing a screw driver according to the seventh embodiment. FIG. 23 is a plan view of an operation panel of a conventional screw driver. FIG. 24 is a perspective view of the angle impact driver according to the eighth embodiment as viewed from the front. FIG. 25 is a perspective view of the angle impact driver according to the eighth embodiment as seen from the rear. FIG. 26 is a functional block diagram showing an angle impact driver according to the eighth embodiment.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In addition, this invention is not limited by this embodiment. In addition, constituent elements in the following embodiments include elements that can be easily replaced by those skilled in the art or substantially the same elements. Furthermore, the constituent elements described below can be appropriately combined, and when there are a plurality of embodiments, the embodiments can be combined.

In the following description, the X-axis direction is referred to as “front-rear direction”. The Y-axis direction is referred to as “vertical direction”. The Y-axis direction is a direction orthogonal to the X-axis direction. The Z-axis direction is referred to as “left-right direction”. The Z-axis direction is a direction that is horizontally orthogonal to the X-axis direction and the Y-axis direction. The forward direction is “+ X” and the backward direction is “−X”. The upward direction is the “+ Y” direction, and the downward direction is the “−Y” direction. In the front-rear direction “rear” side, the right hand side is the “+ Z (right)” direction, and the left hand side is the “−Z (left)” direction.

[First embodiment]
With reference to FIG. 1 thru | or FIG. 4, the outline | summary of the impact driver 1A is demonstrated as an example of an electric tool. FIG. 1 is a perspective view of an impact driver according to the first embodiment as viewed from the front. FIG. 2 is a perspective view of the impact driver according to the first embodiment as viewed from the rear. FIG. 3 is a side sectional view of the impact driver according to the first embodiment. FIG. 4 is a functional block diagram showing the impact driver according to the first embodiment.

The impact driver 1 </ b> A can switch the rotation speed of the motor 11 when an existing operation member or button is operated (second operation) in an operation mode different from the normal operation (first operation). The impact driver 1 </ b> A includes a main body portion 4, a handle portion 6, a battery mounting portion 29, a forward / reverse switching lever 28, a main switch (operation portion) 7, and a control portion (controller) 33. Further, the impact driver 1A has a housing 2 that defines an outer shape.

The housing 2 includes a motor housing 2A, a handle housing 2B, and a battery mounting housing 2C. The motor housing 2A accommodates the motor 11 in the inner space. The handle housing 2B is disposed below the motor housing 2A. The battery mounting housing 2C is disposed below the handle housing 2B. Such motor housing 2A, handle housing 2B, and battery mounting housing 2C are fastened together by screws (not shown) and assembled together.

The main body 4 will be described. The main body 4 holds and drives a tip tool including a driver bit, for example. The main body 4 includes a fan 10, a motor 11, a planetary gear mechanism 12 as a speed reduction mechanism, a spindle 13, a spring 14, a hammer 16, an anvil 17 as an output shaft, a motor housing 2A, and a rear housing. 20, a front housing 26, a hammer case 21, and a bumper 27. The fan 10, the motor 11, the planetary gear mechanism 12, the spindle 13, the spring 14, the hammer 16, and the anvil 17 are assembled coaxially.

The motor housing 2A is a cylindrical member having both axial ends opened. A plurality of air inlets 25 are provided on the peripheral surface of the motor housing 2A.

The rear housing 20 is open at the front end in the axial direction. The rear housing 20 is disposed so as to close the opening at the rear end of the motor housing 2A. A plurality of exhaust ports 24 are provided on the peripheral surface of the rear housing 20.

The front housing 26 is connected to the front end portion of the motor housing 2A. The front housing 26 is formed in a cylindrical shape whose diameter is reduced from the rear side toward the front side. The front housing 26 is open at both ends in the axial direction.

The hammer case 21 is arranged around the hammer 16. The hammer case 21 is formed in a cylindrical shape whose diameter is reduced from the rear side toward the front side. The hammer case 21 is open at both ends in the axial direction. The hammer case 21 is disposed inside the motor housing 2 </ b> A and the front housing 26. In other words, the motor housing 2 </ b> A and the front housing 26 are disposed around the hammer case 21.

The bumper 27 is a cylindrical member formed of an elastic body. The bumper 27 is connected to the front end portion of the hammer case 21. The bumper 27 is open at both ends in the axial direction.

The motor 11 is a drive source of the impact driver 1A. The motor 11 is driven by electric power supplied from the battery 31. The rotational force of the motor 11 is transmitted via the planetary gear mechanism 12. The rotation axis AX of the motor 11 is parallel to the X axis. The motor 11 is accommodated in the motor housing 2A. The motor 11 is a brushless motor. The motor 11 is an inner rotor. More specifically, the motor 11 includes a cylindrical stator 51 and a rotor 52 disposed inside the stator 51.

The stator 51 includes a stator core 54 having a plurality of internal teeth, a front insulating member 56 disposed on the front side of the stator core 54, a rear insulating member 58 disposed on the rear side of the stator core 54, A plurality of drive coils 60 wound around the inner teeth of the stator core 54 via the insulating member 56 and the rear insulating member 58 are provided.

The stator 51 includes a sensor substrate 62 fixed to the front insulating member 56 with screws (not shown), a magnetic sensor (not shown) fixed to the front surface of the sensor substrate 62, and a drive coil 60 disposed on the front peripheral edge of the front insulating member 56. And a coil connection part (not shown) for electrically connecting the sensor board 62 and the sensor board 62. The coil connection part is electrically connected to the terminal part 64 protruding downward. One end of a lead wire (not shown) is connected to the terminal portion 64. The other end of the lead wire is connected to the control unit 33.

The rotor 52 rotates around the rotation axis AX. The rotor 52 includes a motor shaft 66 that is a rotation shaft, a rotor core 68 disposed around the motor shaft 66, a plurality of permanent magnets 70 disposed outside the rotor core 68, and a sensor permanent (not shown). A magnet and a sleeve 72 arranged on the front side of the rotor iron core 68 on the motor shaft 66 are included. The rotor core 68, the permanent magnet 70, and the sensor permanent magnet constitute a rotor assembly.

The motor shaft 66 is rotatably supported by the motor front bearing 74 and the motor rear bearing 77. The motor front bearing 74 is disposed on the motor shaft 66 and in front of the sleeve 72. The motor front bearing 74 is disposed in the opening on the rear side of the bearing retainer 75. The motor rear bearing 77 is disposed at the radial center of the rear housing 20. The other end of the motor shaft 66 is rotatably supported by a motor rear bearing 77. A pinion gear 76 is fixed to the motor shaft 66 at one end of the motor shaft 66.

The fan 10 is disposed on the rear side of the motor shaft 66. The fan 10 is a centrifugal fan having a plurality of blades. The fan 10 is fixed to the motor shaft 66 via a fan sleeve 78. An exhaust port 24 is located outside the fan 10 in the radial direction. An intake port 25 is located in front of the fan 10. When the motor 11 is operated, the fan 10 rotates about the rotation axis AX. When the fan 10 rotates, air outside the motor housing 2A flows into the motor housing 2A from the air inlet 25. The air that has flowed into the motor housing 2 </ b> A cools the motor 11 when it passes around the motor 11. The air heated by cooling the motor 11 is discharged from the exhaust port 24 to the outside of the motor housing 2A.

The planetary gear mechanism 12 transmits the rotational force of the motor 11 to the spindle 13. The planetary gear mechanism 12 includes a ring-shaped internal gear 80, a plurality of planetary gears 82 that mesh with the internal gear 80, and a plurality of pins 84 that are axes of the planetary gear 82. The internal gear 80 is disposed in the hammer case 21 in a state where the rotation is restricted. The plurality of planetary gears 82 are disposed inside the internal gear 80. The planetary gear 82 can rotate around the pin 84 as an axis.

The spindle 13 is connected to the motor shaft 66 through the planetary gear mechanism 12. The rotational force of the motor 11 is transmitted to the spindle 13 via the planetary gear mechanism 12. The spindle 13 rotates about the rotation axis AX when the motor 11 is operated.

The spindle 13 includes a disk-shaped part 90 formed in a disk shape, a front diameter-reduced part that protrudes forward from the disk-shaped part 90, and a cylindrical shape that protrudes rearward from the disk-shaped part 90. And a post-reduced diameter portion formed. When viewed in the Z-axis direction, the front reduced diameter portion and the rear reduced diameter portion have shapes having an outer diameter smaller than that of the disk-shaped portion 90.

The inner surface of the bearing retainer 75 has a rear cylindrical inner surface, an intermediate cylindrical inner surface having a larger diameter than the rear cylindrical inner surface, and a front cylindrical inner surface having a larger diameter than the intermediate cylindrical inner surface. The rear cylindrical inner surface, the intermediate cylindrical inner surface, and the front cylindrical inner surface of the bearing retainer 75 are continuously connected. A housing rib 96 is accommodated inside the bearing retainer 75. The bearing retainer 75 has a retainer rib 98 protruding outward in the radial direction. The retainer rib 98 is sandwiched between the rear end portion of the hammer case 21 and the front surface of the housing rib 96. The front portion of the bearing retainer 75 is sandwiched between the inner surface of the rear end portion of the hammer case 21 and the outer surface of the internal gear 80.

The inner diameter of the spindle bearing 94 is larger than the inner diameter of the motor front bearing 74 held by the bearing retainer 75. The spindle bearing 94 is disposed in front of the motor front bearing 74. In other words, the spindle bearing 94 and the motor front bearing 74 are arranged at different positions in the front-rear direction. As a result, the force transmitted from the spindle 13 to the spindle bearing 94 is restricted from being transmitted to the motor front bearing 74.

The spindle 13 transmits the rotational force of the motor 11 to the hammer 16. The spindle 13 has an inner hole 100 formed therein. The inner hole 100 passes through the spindle 13. The inner hole 100 is formed so that the rear side is thicker than the front side. The rear part of the inner hole 100 is connected to the hollow part of the disk-shaped part 90. The inner hole 100 has a front end portion of the motor shaft 66 and a pinion gear 76 disposed at the rear portion. The pinion gear 76 and the planetary gear 82 of the planetary gear mechanism 12 disposed in the hollow portion of the disk-shaped portion 90 mesh with each other. The rotational force of the rotor 52 is transmitted to the spindle 13 through the planetary gear mechanism 12.

The hammer 16 converts the transmitted rotational force into a rotational impact force and transmits it to the anvil 17. The hammer 16 converts the rotational force of the spindle 13 into a rotational impact force. The hammer 16 has a recess 101 on the rear surface. The front part of the spring 14 is accommodated in the recess 101. A front portion formed in a ring shape of the spring 14 is disposed on the bottom surface of the recess 101 via a plurality of spring balls 102 and a hammer washer 104.

A hammer ball 106 is disposed between the hammer 16 and the front portion of the spindle 13 to guide the hammer 16 in the front-rear direction when hit.

The anvil 17 holds the tip tool in a detachable manner. The anvil 17 rotates the tip tool around the rotation axis AX by the rotational impact force transmitted from the hammer 16. The anvil 17 includes an anvil hole 120 in which a tip tool is disposed, a chuck 112, a pair of extending portions 114 projecting radially outward, and a rear hole into which a convex portion 118 at the front end portion of the spindle 13 is inserted. Have The anvil 17 is rotatably supported by the anvil bearing 116. The anvil bearing 116 is disposed in front of the extending portion 114. The anvil bearing 116 is supported on the front part of the inner surface of the hammer case 21.

The chuck 112 fixes the tip tool inserted into the anvil hole 120. The chuck 112 includes a chuck sleeve 122, a chuck spring 124, a chuck washer 126, a chuck spring stopper 127, and a plurality of chuck balls 128.

The chuck sleeve 122 is formed in a cylindrical shape. The chuck sleeve 122 has a chuck front hole portion 130 having an inner diameter larger than the front outer diameter of the anvil 17 and a chuck ball fixing portion 132 protruding inward from the inner surface of the chuck front hole portion 130.

The chuck spring 124 is disposed in the chuck front hole 130. The chuck washer 126 is disposed in front of the chuck spring 124. The chuck washer 126 is disposed in the front end portion of the chuck front hole portion 130. The chuck spring stopper 127 is fixed to the outer surface of the anvil 17 in front of the chuck washer 126. The chuck spring 124 is disposed in a space defined by the outer surface of the anvil 17, the chuck washer 126, and the inner surface of the chuck front hole portion 130. The chuck ball 128 is exposed to the inside of the anvil hole 120 and can contact the chuck ball fixing portion 132.

The chuck sleeve 122 can be operated by the user of the impact driver 1A. When the user pulls the chuck sleeve 122 forward, the chuck sleeve 122 moves forward while receiving the elastic force of the chuck spring 124. When the chuck sleeve 122 moves forward, the chuck ball fixing portion 132 is separated from the chuck ball 128. As a result, the chuck ball 128 is deregulated and can move outward in the radial direction. When the tip tool is inserted into the anvil hole 120 while the chuck ball 128 is movable, the chuck ball 128 moves away from the anvil hole 120 and moves outward in the radial direction. As a result, the tip tool can be mounted in the anvil hole 120. When the user releases his / her hand from the chuck sleeve 122 with the tip tool disposed in the anvil hole 120, the chuck sleeve 122 moves rearward due to the elastic force of the chuck spring 124. As a result, the chuck ball fixing portion 132 pushes the chuck ball 128 and the chuck ball 128 moves inward in the radial direction. As a result, the tip tool is clamped by the chuck ball 128 and fixed to the anvil 17.

The forward / reverse switching lever 28 is disposed below the main body portion 4 and above the handle portion 6. The forward / reverse switching lever 28 switches the rotation direction of the motor 11. The forward / reverse switching lever 28 includes a lever member 281 that is an operation member operated by the user of the impact driver 1 </ b> A, and a rotation direction signal output unit 282 that outputs a rotation direction signal for switching the rotation direction of the motor 11.

The lever member 281 is a member extending in the Z-axis direction. The lever member 281 is disposed so as to penetrate the motor housing 2A. The lever member 281 is movable with respect to the motor housing 2A. When the lever member 281 is moved relative to the motor housing 2A, the lever member 281 returns to its original position when the user releases the hand.

When the lever member 281 is moved in the Z-axis direction, the rotation direction of the motor 11 is switched. When the lever member 281 is positioned in the middle of the motor housing 2A, the operation of the trigger operation member 8 is restricted.

The rotation direction signal output unit 282 outputs a rotation direction signal for switching the rotation direction of the motor 11 according to the position of the lever member 281 in the Z-axis direction. More specifically, the rotation direction signal output unit 282 outputs a command signal for normal rotation of the rotation direction of the motor 11 when the right side portion of the lever member 281 is pushed and protruded to the left side. The rotation direction signal output unit 282 outputs a command signal that reverses the rotation direction of the motor 11 when the left side portion of the lever member 281 is pushed and protruded to the right side.

When the lever member 281 is operated in the Z-axis direction, the lever member 281 and the rotation direction signal output unit 282 come into contact with each other, and the rotation direction signal output unit 282 outputs a rotation direction signal. When the operation of the lever member 281 by the user is released, the lever member 281 is separated from the rotation direction signal output unit 282 by the elastic force of the elastic member 5. When the lever member 281 is separated from the rotation direction signal output unit 282, the output of the rotation direction signal from the rotation direction signal output unit 282 is stopped.

The handle portion 6 will be described. The handle portion 6 is a grip portion that a user of the impact driver 1A grips when using the impact driver 1A. The handle portion 6 is connected to the lower side of the main body portion 4. The handle portion 6 includes a handle housing 2B connected to the lower side of the motor housing 2A.

The battery mounting unit 29 will be described. The battery mounting portion 29 is disposed below the handle portion 6. A battery 31 can be attached to and detached from the battery mounting portion 29. The battery mounting portion 29 has a mounting surface 32 on which the battery 31 is mounted and an operation surface 40 including an operation panel 44. The battery mounting part 29 is connected to the lower side of the handle part 6. The battery mounting portion 29 includes a battery mounting housing 2C connected to the lower side of the handle housing 2B.

The battery 31 has a battery terminal. The battery terminal is disposed on the upper surface of the battery 31. The battery 31 has a raised portion 34 that protrudes upward at the front portion of the battery 31.

The mounting surface 32 includes the lower surface of the battery mounting portion 29 facing downward. The battery mounting part 29 has a mounting terminal. The mounting terminal is disposed on the mounting surface 32 of the battery mounting unit 29.

The battery 31 is detachable from the battery mounting part 29. When the battery 31 is mounted on the battery mounting portion 29, the battery 31 is slid from the front to the rear of the battery mounting portion 29 so that the upper surface of the battery 31 and the mounting surface 32 face each other. By sliding the battery 31, the rear part of the raised part 34 comes into contact with the front part of the battery mounting part 29. A battery claw 36 that protrudes from the upper surface of the battery 31 is provided on the upper surface of the battery 31. The battery claw 36 is biased upward by the elastic member. The battery pawl 36 is inserted into a battery mounting recess 37 provided at the front portion of the battery mounting portion 29. Thereby, the battery 31 and the battery mounting part 29 are positioned, and the battery 31 is mounted on the battery mounting part 29.

In the state where the battery 31 is mounted on the battery mounting portion 29, the upper surface of the battery 31 and the mounting surface 32 face each other. Further, in a state where the battery 31 is mounted on the battery mounting portion 29, the battery terminal and the mounting terminal are connected. Thereby, the battery 31 and the terminal 35 provided in the battery mounting part 29 are connected. The terminal 35 is connected to the control unit 33.

When the battery 31 is removed from the battery mounting part 29, the battery button 30 is operated. The battery button 30 is connected to an elastic member that biases the battery pawl 36. Accordingly, when the battery button 30 is operated, the battery pawl 36 is detached from the battery mounting recess 37 and the battery 31 is released from the battery mounting portion 29. The battery 31 is removed from the battery mounting part 29 by sliding the battery 31 forward from the battery mounting part 29.

The operation surface 40 is disposed at the front portion of the upper surface of the battery mounting portion 29. The operation surface 40 is an upper surface of the battery mounting housing 2 </ b> C and is disposed in a region in front of the handle portion 6. The operation panel 44 is provided on the operation surface 40.

The operation panel 44 will be described with reference to FIG. FIG. 5 is a plan view of the operation panel of the impact driver according to the first embodiment. The operation panel 44 includes buttons for performing various operations for changing the operation state of the impact driver 1A, and a display unit 445 for displaying the operation state. More specifically, the operation panel 44 includes a striking force switching button 441, a light on / off button 442, a battery remaining amount confirmation button 443, and an automatic change mode switching button 444.

The striking force switching button 441 is operated to change the striking force of the hammer 16. Each time the striking force switching button 441 is operated, the striking force setting value is sequentially switched in five stages of “strongest”, “strong”, “medium”, “weak”, and “for tex”. The striking force switching button 441 outputs an electric signal to the control unit 33 when an operation is detected.

The light on / off button 442 is operated to switch on / off the light disposed on the upper side of the trigger operation member 8. The light on / off button 442 outputs an electrical signal to the control unit 33 when an operation is detected.

The battery remaining amount confirmation button 443 is operated to confirm the remaining amount of the battery. The battery remaining amount confirmation button 443 outputs an electric signal to the control unit 33 when an operation is detected.

The automatic change mode switching button 444 is operated to switch the automatic change mode. When the automatic change mode switching button 444 is operated, the rotation speed of the motor 11 is lowered until the hitting is started, and when the hitting is started, the rotation speed of the motor 11 is maximized. The automatic change mode switching button 444 outputs an electrical signal to the control unit 33 when an operation is detected.

1 to 3, hook grooves 39 to which the hooks 38 are attached are provided on the left and right sides of the upper part of the battery mounting housing 2C. The hook grooves 39 are provided on both the left and right sides of the battery mounting housing 2C. A strap 42 is attached to the rear part of the battery mounting housing 2C.

The main switch 7 will be described with reference to FIGS. The main switch 7 switches between starting and stopping the impact driver 1A. More specifically, the main switch 7 switches between starting and stopping the motor 11. The main switch 7 is disposed on the upper portion of the handle portion 6. The main switch 7 includes a trigger operation member 8, a trigger signal output unit 9, and a mode signal output unit 91.

The trigger operation member 8 is disposed on the upper portion of the handle portion 6. The trigger operation member 8 is disposed at the front part of the handle part 6 on the + X side. The handle housing 2B has an opening 3 in which the trigger operation member 8 is disposed. At least a part of the trigger operation member 8 is disposed in the opening 3. The trigger operation member 8 projects forward from the front surface of the handle housing 2B.

The trigger operation member 8 is a block-shaped member. The trigger operation member 8 has a front end face 8F facing forward. In the Z-axis direction, the trigger operation member 8 is disposed at the center portion of the handle portion 6. In the Z-axis direction, the center of the trigger operation member 8 coincides with the center of the handle portion 6.

The trigger operation member 8 will be described with reference to FIG. FIG. 6 is a schematic view of a trigger operation member of the impact driver according to the first embodiment. The trigger operation member 8 is switched between starting and stopping of the motor 11 by pulling the trigger operation member 8 into the opening 3 as a first operation which is a normal operation. In addition, the trigger operation member 8 controls the rotation speed of the motor 11 according to the pull-in amount of the trigger operation member 8 when the motor 11 is activated as the first operation that is a normal operation. The pull-in amount (first pull-in amount) of the trigger operation member 8 during the first operation is d1. The direction in which the trigger operation member 8 is movable during the first operation is referred to as the first direction. In the present embodiment, the first direction of the trigger operation member 8 is a direction in which the trigger operation member 8 is pulled into the opening 3.

The trigger operation member 8 can switch the rotation speed of the motor 11 by performing an operation (second operation) different from the first operation. In the present embodiment, as the second operation, when the trigger operation member 8 is drawn into the opening 3 with a drawing amount (second drawing amount) d2 smaller than the drawing amount d1 of the first operation, the rotation speed of the motor 11 is set to “maximum”. ”,“ High ”,“ Medium ”,“ Low ”, and“ For Text ”are sequentially switched. Even if the second operation is executed by the trigger operation member 8, the motor 11 is not energized and remains in a non-starting state.

The trigger operation member 8 returns to the original position by the elastic force of the elastic member 5 when the user releases the hand.

The trigger signal output unit 9 includes an electronic circuit that can output a trigger signal by the first operation of the trigger operation member 8. The trigger signal output unit 9 is disposed inside the handle housing 2B. The trigger signal is a command signal that activates the motor 11. More specifically, the trigger signal output unit 9 outputs a command signal for driving the motor 11 when the pull-in amount of the main switch 7 is equal to or greater than the first threshold, and the motor 11 when the pull-in amount of the main switch 7 is less than the first threshold. Stops the output of the command signal that drives. When the pull-in amount of the main switch 7 is greater than the first threshold, the trigger signal output unit 9 outputs a command signal that increases the rotational speed of the motor 11 as the pull-in amount increases.

When the trigger operation member 8 is pulled into the handle housing 2B by the retract amount d1, the trigger operation member 8 and the trigger signal output unit 9 come into contact with each other, and a trigger signal is output from the trigger signal output unit 9. When the operation of the trigger operation member 8 by the user is released, the trigger operation member 8 is separated from the trigger signal output unit 9 by the elastic force of the elastic member 5. When the trigger operation member 8 moves away from the trigger signal output unit 9, the trigger signal output from the trigger signal output unit 9 is stopped.

The mode signal output unit 91 includes an electronic circuit that can output a mode signal by the second operation of the trigger operation member 8. The mode signal output unit 91 is disposed inside the handle housing 2B. The mode signal is a command signal for changing the rotation speed of the motor 11.

When the trigger operation member 8 is pulled into the handle housing 2B by the pull-in amount d2, the trigger operation member 8 and the mode signal output unit 91 come into contact with each other, and the mode signal is output from the mode signal output unit 91. When the operation of the trigger operation member 8 by the user is released, the trigger operation member 8 is separated from the mode signal output unit 91 by the elastic force of the elastic member 5. When the trigger operation member 8 moves away from the mode signal output unit 91, the output of the mode signal from the mode signal output unit 91 is stopped.

When the trigger operation member 8 is pulled by the pull-in amount d2, the mode signal output unit 91 sets the rotation speed setting value of the motor 11 to “highest”, “high”, “medium”, “low”, “for text”. A mode signal for sequentially switching in five stages is output. More specifically, when the trigger operation member 8 is pulled by the pull-in amount d2, the mode signal output unit 91 sets the rotation speed setting values of the motor 11 to “highest”, “high”, “medium”, “low”, “ Outputs a mode signal for switching in the order of “for text”.

The control unit 33 controls the impact driver 1A. The control unit 33 includes a control circuit board and is disposed inside the battery mounting unit 29. The control unit 33 has a main memory including a processor such as a CPU (Central Processing Unit), a nonvolatile memory such as a ROM (Read Only Memory) and a volatile memory such as a RAM (Random Access Memory), and an input / output. And an interface including a circuit.

The control unit 33 is connected to the terminal 35, the main switch 7, the forward / reverse switching lever 28, the operation panel 44, and the motor 11. In the present embodiment, the control unit 33 sets the rotation speed of the motor 11 to “highest” when the battery 31 is mounted on the battery mounting unit 29.

The control unit 33 is connected to the trigger signal output unit 9 of the main switch 7 and the mode signal output unit 91.

The control unit 33 drives the motor 11 while a command signal for driving the motor 11 is output from the trigger signal output unit 9. When the output of the command signal for driving the motor 11 from the trigger signal output unit 9 is stopped, the control unit 33 stops the motor 11.

When the control unit 33 receives the mode signal from the mode signal output unit 91, the control unit 33 switches the rotation speed of the motor 11. When the control unit 33 receives the mode signal while the rotation speed of the motor 11 is set to “highest”, the control unit 33 changes the rotation speed of the motor 11 to “high”. When the control unit 33 receives the mode signal while the rotation speed of the motor 11 is set to “high”, the control unit 33 changes the rotation speed of the motor 11 to “medium”. When the control unit 33 receives the mode signal while the rotation speed of the motor 11 is set to “medium”, the control unit 33 changes the rotation speed of the motor 11 to “low”. When the control unit 33 receives the mode signal in a state where the rotation speed of the motor 11 is set to “low”, the control unit 33 changes the rotation speed of the motor 11 to “for text”. When the control unit 33 receives the mode signal while the rotation speed of the motor 11 is set to “for text”, the control unit 33 changes the rotation speed of the motor 11 to “highest”.

The control unit 33 displays the set rotation speed of the motor 11 on the mode display unit of the display unit 445.

The control unit 33 is connected to the rotation direction signal output unit 282 of the forward / reverse switching lever 28. When receiving the command signal from the rotation direction signal output unit 282, the control unit 33 switches the rotation direction of the motor 11. In other words, when receiving the rotation direction switching signal from the rotation direction signal output unit 282, the control unit 33 changes the set value of the rotation direction of the motor 11.

The control unit 33 is connected to a striking force switching button 441, a light on / off button 442, a battery remaining amount confirmation button 443, and an automatic change mode switching button 444 on the operation panel 44.

The control unit 33 sequentially switches the setting value of the striking force in five stages of “strongest”, “strong”, “medium”, “weak”, and “for tex” each time the striking force switching button 441 is operated. The control unit 33 displays the set rotation speed of the motor 11 on the mode display unit of the display unit 445.

When the light on / off button 442 is operated, the control unit 33 outputs a command signal for switching between turning on and off the light to the light. The control unit 33 displays whether the light is turned on or off on the light display unit of the display unit 445.

When the battery remaining amount confirmation button 443 is operated, the control unit 33 confirms the remaining amount of the battery 31 via the terminal 35 and displays it on the remaining amount display unit of the display unit 445.

When the automatic change mode switching button 444 is operated, the control unit 33 outputs a command signal for automatically changing the rotation speed of the motor 11 to the motor 11.

Next, a method for changing the rotation speed of the motor 11 in the impact driver 1A configured as described above will be described. The user grasps and grips the handle portion 6 of the impact driver 1A with the right hand.

The user, for example, pulls the trigger operation member 8 with the index finger into the opening 3 with the pull-in amount d2, and changes the rotation speed of the motor 11 to a desired rotation speed. The user confirms the rotation speed of the motor 11 by the mode display unit of the display unit 445.

After setting the motor 11 to a desired rotation speed, the user operates the trigger operation member 8 with the pull-in amount d1 with the index finger. Thereby, in the impact driver 1A, the motor 11 is activated. The motor 11 rotates with the set rotation speed as an upper limit.

When the motor 11 is activated, the fan 10 rotates. When the fan 10 rotates, air outside the motor housing 2A flows into the motor housing 2A from the air inlet 25. The air that has flowed into the motor housing 2 </ b> A cools the motor 11 when it passes around the motor 11. Air inside the motor housing 2A is discharged from the exhaust port 24 to the outside of the motor housing 2A.

Rotational force of the motor 11 is transmitted to the hammer 16 via the spindle 13. The hammer 16 drives a tip tool held by the anvil 17. In this way, the tip tool held on the anvil 17 rotates.

As described above, according to the present embodiment, the rotation speed of the motor 11 is switched by performing a second operation different from the first operation, which is a normal operation, on an existing operation member or button. Thus, in this embodiment, in order to change the rotational speed of the motor 11, it is not necessary to add an operation member or a button. According to this embodiment, the impact driver 1A can be reduced in size.

In this embodiment, as the second operation, the rotation speed of the motor 11 is switched by pulling the trigger operation member 8 with the pull-in amount d2. According to the present embodiment, the user can perform the second operation with the index finger while holding the impact driver 1A. In this embodiment, in order to switch the rotation speed of the motor 11, the impact driver 1A does not have to be placed on the work table or changed, so that workability can be improved.

[Second Embodiment]
The impact driver 1A according to the present embodiment will be described with reference to FIG. FIG. 7 is a plan view of the operation panel of the impact driver according to the second embodiment. In the following description, components similar to those of the impact driver 1A of the first embodiment are denoted by the same reference numerals or corresponding reference numerals, and detailed description thereof is omitted.

In the present embodiment, any one of the light on / off button 442, the battery remaining amount confirmation button 443, and the automatic change mode switching button 444 is used as an operation unit. As a second operation, when any button is pressed while changing either the operation time or the number of operations, specifically, when the button is pressed for a long time or multiple times, the control unit 33 Control for switching the rotation speed of the motor 11 is performed.

The operation panel 44A includes a light on / off button 442, a battery remaining amount confirmation button 443, and an automatic change mode switching button 444.

When the light on / off button 442 is pressed as the first operation, the light can be turned on or off. When the light on / off button 442 is long-pressed as a second operation or pressed several times, the setting value of the rotation speed of the motor 11 is set to “highest”, “high”, “medium”, “low”, “text”. A mode signal to be switched in the order of “for” is output.

When the battery remaining amount confirmation button 443 is pressed as the first operation, the remaining amount of the battery is displayed. When the battery remaining amount confirmation button 443 is long-pressed as a second operation or is pressed a plurality of times, the setting value of the rotation speed of the motor 11 is set to “highest”, “high”, “medium”, “low”, “ Outputs a mode signal for switching in the order of “for text”.

When the automatic change mode switching button 444 is pressed as the first operation, the automatic change mode is switched to the automatic change mode. When the automatic change mode switching button 444 is long-pressed as a second operation or is pressed a plurality of times, the setting value of the rotation speed of the motor 11 is set to “highest”, “high”, “medium”, “low”, “ Outputs a mode signal for switching in the order of “for text”.

When the control unit 33 receives a mode signal by pressing any one of the light on / off button 442, the battery remaining amount confirmation button 443, and the automatic change mode switching button 444 for a long time or a plurality of times, the control unit 33 Change the rotation speed in the order of “highest”, “high”, “medium”, “low”, “for tex”.

As described above, according to the present embodiment, the motor 11 is operated using at least one of the light on / off button 442, the battery remaining amount confirmation button 443, and the automatic change mode switching button 444 of the operation panel 44A. Change the rotation speed. Thereby, in this embodiment, in order to change the rotational speed of the motor 11 on the operation panel 44A, it is not necessary to arrange a dedicated button such as the striking force switching button 441 (FIG. 4), for example. According to the present embodiment, the operation panel 44A can be reduced in size.

[Third embodiment]
The impact driver 1A according to the present embodiment will be described with reference to FIG. FIG. 8 is a diagram illustrating an example of an operation in which a plurality of operation members of the impact driver according to the third embodiment are combined. In the following description, components similar to those of the impact driver 1A of the first embodiment are denoted by the same reference numerals or corresponding reference numerals, and detailed description thereof is omitted.

In the present embodiment, when a plurality of operations on a plurality of operation units are combined as the second operation, the control unit 33 performs control to switch the rotation speed of the motor 11. Moreover, you may distinguish 1st operation and 2nd operation by changing the order of operation of a some operation part.

For example, when the trigger operation member 8 is pulled by the pulling amount d1 while the forward / reverse switching lever 28 is in the neutral position, the rotation speed of the motor 11 is “highest”, “high”, “medium”, “low”, “text”. It is switched in the order of “for”. For example, when the light on / off button 442 is pressed with the forward / reverse switching lever 28 in the neutral position, the rotational speed of the motor 11 is “highest”, “high”, “medium”, “low”, “for text”. It is switched in the order. For example, when the trigger operation member 8 is pulled down d1 while the light on / off button 442 is pressed, the rotation speed of the motor 11 is “highest”, “high”, “medium”, “low”, “for text”. It is switched in the order.

Alternatively, for example, when the trigger operation member 8 is pulled by the pulling amount d1 after the forward / reverse switching lever 28 is set to the neutral position, the rotation speed of the motor 11 is “strongest”, “strong”, “medium”, “weak”, It can be switched in the order of “for text”. Further, for example, when the forward / reverse switching lever 28 is set to the neutral position after the pulling amount d1 of the trigger operation member 8 is pulled, the rotation speed of the motor 11 is “for text”, “weak”, “medium”, “strong”. , Switching in order of “strongest”.

When the control unit 33 receives electrical signals from a plurality of operation units as exemplified above, the control unit 33 sets the rotation speed of the motor 11 to “highest”, “high”, “medium”, “low”, “for tex”. Switch in the order of “for text”, “weak”, “medium”, “strong”, “strongest”.

As described above, according to the present embodiment, the operation member for changing the rotation speed of the motor 11 does not have to be arranged in any of the main body portion 4, the handle portion 6, and the battery mounting portion 29. According to this embodiment, the impact driver 1A can be reduced in size.

[Fourth embodiment]
The impact driver 1A according to the present embodiment will be described with reference to FIGS. FIG. 9 is a schematic view of a forward / reverse switching lever of an impact driver according to the fourth embodiment. FIG. 10 is a schematic diagram of a forward / reverse switching lever and a switch of an impact driver according to the fourth embodiment. FIG. 11 is a functional block diagram showing an impact driver according to the fourth embodiment. In the following description, components similar to those of the impact driver 1A of the first embodiment are denoted by the same reference numerals or corresponding reference numerals, and detailed description thereof is omitted.

The impact driver 1A can switch the rotational speed of the motor 11 by moving the operation member of the existing operation unit in a second direction different from the first direction moved during the first operation.

The forward / reverse switching lever (operation unit) 28 switches the rotation direction of the motor 11 as the first operation. The direction in which the forward / reverse switching lever (operation member) 28 is movable during the first operation is referred to as the first direction. In the present embodiment, the first direction of the forward / reverse switching lever 28 is the Z-axis direction indicated by the arrow A.

Furthermore, when the forward / reverse switching lever 28 is moved in the second direction as the second operation, the rotation speed of the motor 11 is switched.

The forward / reverse switching lever 28 includes a lever member 281, a rotation direction signal output unit 282, and a mode signal output unit 283 that outputs a mode signal for switching the rotation speed of the motor 11.

When the lever member 281 is moved in a second direction different from the first direction, the rotation speed of the motor 11 is switched. In the present embodiment, when the lever member is moved in the up-down direction as indicated by arrow B or in the front-rear direction as indicated by arrow C, the rotation speed of the motor 11 is switched.

The mode signal output unit 283 outputs a mode signal for switching the rotation speed of the motor 11 according to the position of the lever member 281 in the Y-axis direction or the X-axis direction. The mode signal output unit 283 includes an electronic circuit that can output a mode signal by operating the lever member 281.

When the lever member 281 is operated in the Y-axis direction or the X-axis direction, the lever member 281 and the mode signal output unit 283 come into contact with each other, and the mode signal is output from the mode signal output unit 283. When the lever member 281 moves away from the mode signal output unit 283, the signal output from the mode signal output unit 283 is stopped.

The forward / reverse switching lever 28 and the switch part 2831 of the mode signal output part 283 will be described with reference to FIG. In FIG. 10, the lever member 281 is movable in the arrow B direction. When the lever member 281 is in the position shown in FIG. 10, the lever member 281 is separated from the switch portion 2831. When the lever member 281 moves downward, it contacts the switch portion 2831. The mode signal output unit 283 outputs a mode signal.

When the lever member 281 is moved in the Y-axis direction or the X-axis direction, the mode signal output unit 283 changes the set value of the rotation speed of the motor 11 to “highest”, “high”, “medium”, “low”, “text”. Switch sequentially in five stages. More specifically, when the lever member 281 is moved in the −Y direction or the −X direction, the mode signal output unit 283 changes the set value of the rotation speed of the motor 11 to “highest”, “high”, “medium”, “low”. ”,“ Tex ”. When the lever member 281 is moved in the + Y direction or the + X direction, the mode signal output unit 283 changes the set value of the rotation speed of the motor 11 to “for text”, “low”, “medium”, “high”, “highest”. Switch in the order. In the present embodiment, when the battery 31 is mounted on the battery mounting unit 29, the control unit 33 sets the rotation speed of the motor 11 to “highest”.

When the lever member 281 is moved in the −Y direction or the −X direction while the rotation speed of the motor 11 is set to “highest”, the control unit 33 changes the rotation speed of the motor 11 to “high”. . When the lever member 281 is moved in the −Y direction or the −X direction while the rotation speed of the motor 11 is set to “high”, the control unit 33 changes the rotation speed of the motor 11 to “medium”. . When the lever member 281 is moved in the −Y direction or the −X direction while the rotation speed of the motor 11 is set to “medium”, the control unit 33 changes the rotation speed of the motor 11 to “low”. . When the lever member 281 is moved in the −Y direction or the −X direction while the rotation speed of the motor 11 is set to “low”, the control unit 33 changes the rotation speed of the motor 11 to “for text”. To do. When the lever member 281 is moved in the −Y direction or the −X direction while the rotation speed of the motor 11 is set to “for text”, the control unit 33 changes the rotation speed of the motor 11 to “highest”. To do.

The control unit 33 is connected to the rotation direction signal output unit 282 and the mode signal output unit 283 of the forward / reverse switching lever 28. When receiving the command signal from the mode signal output unit 283, the control unit 33 switches the rotation speed of the motor 11. In other words, when receiving the mode signal from the mode signal output unit 283, the control unit 33 changes the set value of the rotation speed of the motor 11.

As described above, in the present embodiment, the rotation speed of the motor 11 is switched by moving the trigger operation member 8 in a second direction different from the first direction in which the trigger operation member 8 is movable in the first operation. According to the present embodiment, an operation member that is movable to change the rotation speed of the motor 11 does not have to be disposed in any of the main body portion 4, the handle portion 6, and the battery mounting portion 29. According to this embodiment, the impact driver 1A can be reduced in size.

[Fifth embodiment]
The impact driver 1A according to the present embodiment will be described with reference to FIG. FIG. 12 is a schematic view of a trigger operation member of an impact driver according to the fifth embodiment. In the following description, components similar to those of the impact driver 1A of the first embodiment are denoted by the same reference numerals or corresponding reference numerals, and detailed description thereof is omitted.

The trigger operation member (operation member) 8 of the main switch (operation unit) 7 is switched between starting and stopping of the motor 11 by pulling the trigger operation member 8 into the opening 3 as a first operation. The direction in which the trigger operation member 8 is movable during the first operation is referred to as the first direction. In the present embodiment, the first direction of the trigger operation member 8 is the direction indicated by the arrow D, and the trigger operation member 8 is pulled into the opening 3.

Furthermore, when the trigger operation member 8 is moved in the second direction as the second operation, the rotation speed of the motor 11 is switched. In the present embodiment, when the trigger operation member 8 is moved in the direction of pulling out from the opening 3 as indicated by an arrow E, the rotation speed of the motor 11 is switched.

When the control unit 33 receives the mode signal from the mode signal output unit 91, the control unit 33 switches the rotation speed of the motor 11.

As described above, in the present embodiment, the rotation speed of the motor 11 is switched by moving the trigger operation member 8 in a second direction different from the first direction in which the trigger operation member 8 is movable in the first operation. In the present embodiment, an operation member that can be moved to change the rotation speed of the motor 11 does not have to be disposed in any of the main body portion 4, the handle portion 6, and the battery mounting portion 29. According to this embodiment, the impact driver 1A can be reduced in size.

[Sixth embodiment]
A driver drill 1B according to the present embodiment will be described with reference to FIGS. FIG. 13: is the perspective view which looked at the driver drill which concerns on 6th embodiment from the front. FIG. 14 is a perspective view of the driver drill according to the sixth embodiment viewed from the rear. FIG. 15 is a functional block diagram showing a driver drill according to the sixth embodiment. FIG. 16 is a schematic diagram of a speed change switch of a driver drill according to the sixth embodiment. FIG. 17 is a schematic view of a speed change switch and a hall element of a driver drill according to a sixth embodiment. FIG. 18 is a schematic view of a tightening force switching ring of a driver drill according to a sixth embodiment. FIG. 19 is a schematic view of a tightening force switching ring and a Hall element of a driver drill according to a sixth embodiment.

The driver drill 1B includes a main body portion 4, a handle portion 6, a battery mounting portion 29, a forward / reverse switching lever 28, a trigger operation member 8 of a main switch (operation portion) 7, a speed changeover switch 140, a control portion. (Controller) 33. The battery mounting portion 29 has a mounting surface 32 on which the battery 31 is mounted and an operation surface 40 including an operation panel 44. The main body 4 includes a drill chuck 18 and a tightening force switching ring (change ring) 19. The drill chuck 18 can rotate about the rotation axis AX while holding the tip tool.

In such a driver drill 1B, the speed changeover switch 140 or the tightening force changeover ring 19 which is an operation member of the existing operation unit is moved in a second direction different from the first direction moved during the first operation. The rotation speed of the motor 11 can be switched.

The case where the rotation speed of the motor 11 is switched by the speed change switch 140 will be described. The speed changeover switch 140 includes a switch operation member 141, a speed signal output unit 142, and a mode signal output unit 143.

The switch operation member 141 is moved in the X-axis direction indicated by the arrow F as the first operation, so that the rotation speed of the motor 11 is switched between a low speed and a high speed. Furthermore, when the switch operation member 141 is moved in the second direction indicated by the arrow G as the second operation, the rotation speed of the motor 11 is switched. In the present embodiment, when the switch operating member 141 is pushed in the −Y direction as indicated by the arrow G, the rotation speed of the motor 11 is switched.

The speed signal output unit 142 includes an electronic circuit that can output a speed switching signal when the switch operating member 141 is moved in the first direction. The speed signal output unit 142 is disposed inside the motor housing 2A.

The mode signal output unit 143 includes an electronic circuit that can output a mode signal when the switch operation member 141 is moved in the second direction. The mode signal output unit 143 is disposed inside the motor housing 2A.

Referring to FIG. 17, the speed changeover switch 140 and the Hall element 1431 of the mode signal output unit 143 will be described. In FIG. 17, the switch operation member 141 is movable in the arrow G direction. When the switch operation member 141 is in the position shown in FIG. 17, the magnet 1411 disposed below the switch operation member 141 is separated from the Hall element 1431. When the switch operation member 141 moves downward, the magnet 1411 comes into contact with the Hall element 1431. The mode signal output unit 143 outputs a mode signal.

The control unit 33 is connected to the speed signal output unit 142 and the mode signal output unit 143 of the speed changeover switch 140. When the control unit 33 receives the speed switching signal from the speed signal output unit 142, the control unit 33 switches the rotation speed of the motor 11. When receiving the mode signal from the mode signal output unit 143, the control unit 33 switches the rotation speed of the motor 11.

The case where the rotation speed of the motor 11 is switched by the tightening force switching ring 19 will be described. The tightening force switching ring 19 includes a ring switch operation member 191, a tightening force signal output unit 192, and a mode signal output unit 193.

As the first operation, the ring switch operating member 191 is rotated in the circumferential direction indicated by the arrow H, whereby the tightening force (torque) is switched. Furthermore, when the ring switch operating member 191 is moved in the second direction indicated by the arrow I as the second operation, the rotation speed of the motor 11 is switched. In the present embodiment, when the ring switch operating member 191 is moved in the X direction as indicated by the arrow I, the rotation speed of the motor 11 is switched.

The clamping force signal output unit 192 includes an electronic circuit that can output a clamping force signal when the ring switch operating member 191 is moved in the first direction. The tightening force signal output unit 192 is disposed inside the motor housing 2A.

The mode signal output unit 193 includes an electronic circuit that can output a mode signal when the ring switch operating member 191 is moved in the second direction. The mode signal output unit 193 is disposed inside the motor housing 2A.

Referring to FIG. 19, the tightening force switching ring 19 and the Hall element 1931 of the mode signal output unit 193 will be described. In FIG. 19, the ring switch operating member 191 is movable in the arrow I direction. When the ring switch operating member 191 is in the position shown in FIG. 19, the magnet 1911 disposed at the rear end of the ring switch operating member 191 is separated from the Hall element 1931. When the clamping force switching ring 19 moves downward, the magnet 1911 comes into contact with the Hall element 1931. The mode signal output unit 193 outputs a mode signal.

The control unit 33 is connected to the clamping force signal output unit 192 and the mode signal output unit 193 of the clamping force switching ring 19. When receiving the tightening force signal from the tightening force signal output unit 192, the control unit 33 switches the tightening force. When the control unit 33 receives the mode signal from the mode signal output unit 193, the control unit 33 switches the rotation speed of the motor 11.

As described above, in the present embodiment, the rotational speed of the motor 11 is switched by moving the speed change switch 140 or the tightening force switching ring 19 in a second direction different from the first direction in which the speed change switch 140 is movable in the first operation. . According to this embodiment, the driver drill 1B can be reduced in size.

[Seventh embodiment]
A screw driver 1C according to the present embodiment will be described with reference to FIGS. FIG. 20 is a perspective view of the screw driver according to the seventh embodiment as viewed from the front. FIG. 21 is a perspective view of the screw driver according to the seventh embodiment as viewed from the rear. FIG. 22 is a functional block diagram showing a screw driver according to the seventh embodiment.

The screw driver 1C includes a main body portion 4, a handle portion 6, a battery mounting portion 29, a forward / reverse switching lever 28, a trigger operation member 8 of a main switch (operation portion) 7, a lock button 48, a control portion ( Controller) 33. The battery mounting portion 29 has a mounting surface 32 on which the battery 31 is mounted and an operation surface 40 including an operation panel 44.

The main body 4 extends in the X-axis direction. The handle portion 6 extends in the Y axis direction. The main body 4 is disposed in front of the handle 6. The rear portion of the main body portion 4 is connected to the upper end portion of the handle portion 6 via the first connection portion 45. The lower part of the main body 4 is connected to the battery mounting part 29 via the second connection part 46. A lower end portion of the handle portion 6 is connected to the battery mounting portion 29. A loop is formed by at least a part of the main body 4, the first connection part 45, the handle part 6, at least a part of the battery mounting part 29, and the second connection part 46. The main body 4 includes a lock ring 47, a drill chuck 18, and a lock button 48. The drill chuck 18 can rotate about the rotation axis AX while holding the tip tool.

In such a screw driver 1C, the rotation speed of the motor 11 can be switched by long-pressing or pressing the lock button 48, which is an operation member of the existing operation unit, for a long time.

The lock button 48 includes a button operation member 481, a lock signal output unit 482, and a mode signal output unit 483.

When the button operation member 481 is pushed into the handle portion 6 while the lever member 281 is pulled, the button operation member 481 is locked at the position where the lever member 281 is pulled even if the user releases the lever member 281. Further, when the button operation member 481 is long-pressed or pressed several times as the second operation, the rotation speed of the motor 11 is switched.

The lock signal output unit 482 includes an electronic circuit that can output a lock signal when the button operation member 481 is pushed in the −Z direction. The lock signal output unit 482 is disposed inside the handle unit 6.

The mode signal output unit 483 includes an electronic circuit that can output a mode signal when the button operation member 481 is long-pressed in the −Z direction or pressed several times. The mode signal output unit 483 is disposed inside the handle unit 6.

The control unit 33 is connected to the lock signal output unit 482 of the lock button 48 and the mode signal output unit 483. When receiving the lock signal from the lock signal output unit 482, the control unit 33 maintains a state of outputting a command signal for driving the motor 11. When the control unit 33 receives the mode signal from the mode signal output unit 483, the control unit 33 switches the rotation speed of the motor 11.

As described above, in the present embodiment, the rotation speed of the motor 11 is switched by long-pressing the lock button 48 or pressing the lock button 48 a plurality of times. According to the present embodiment, the screw driver 1C can be reduced in size.

On the other hand, conventionally, as shown in FIG. 23, in order to change the rotation speed of the motor 11, a dedicated button such as a mode switching button 441 has been arranged on the operation panel 44, for example. FIG. 23 is a plan view of an operation panel of a conventional screw driver. According to this embodiment, the operation panel 44 can be reduced in size.

[Eighth embodiment]
The angle impact driver 1D according to the present embodiment will be described with reference to FIGS. FIG. 24 is a perspective view of the angle impact driver according to the eighth embodiment as viewed from the front. FIG. 25 is a perspective view of the angle impact driver according to the eighth embodiment viewed from the rear. FIG. 26 is a functional block diagram showing an angle impact driver according to the eighth embodiment.

The angle impact driver 1D includes a main body portion 4, a handle portion 6, a battery mounting portion 29, a forward / reverse switching lever 28, a trigger operation member 8 of a main switch (operation portion) 7, and a control portion (controller) 33. Is provided. A battery 31 is mounted on the battery mounting unit 29.

The main body 4 extends in the X-axis direction, and the tip extends in the -Y direction. The handle portion 6 extends in the X axis direction. The main body 4 is disposed in front of the handle 6. A rear end portion of the handle portion 6 is connected to the battery mounting portion 29. The tip tool held by the anvil 17 rotates about the rotation axis BX. The rotation axis BX is orthogonal to the rotation axis AX of the motor 11. The rotation shaft BX holds a first bevel gear (not shown). The rotation shaft AX holds a second bevel gear (not shown). More specifically, a first bevel gear is fixed to the central portion of the rotation shaft BX, and the first bevel gear rotates about the rotation shaft BX. The first bevel gear meshes with the second bevel gear.

In such an angle impact driver 1D, the trigger operation member 8 which is an operation member of the existing operation unit is retracted into the opening 3 with a retract amount d2 smaller than the retract amount d1 of the first operation, or the lever member 281 is the first. When it is moved in a second direction different from the direction, the rotation speed of the motor 11 is switched.

As described above, in the present embodiment, the rotation speed of the motor 11 is switched by operating the trigger operation member 8 or the lever member 281 differently from the normal operation. According to this embodiment, the angle impact driver 1D can be reduced in size.

In the above, the impact driver 1A, the driver drill 1B, the screw driver 1C, and the angle impact driver 1D are exemplified as the power tools, but the power tools are not limited to this. Examples of the electric tool include an electric marnoco, an electric reciprocating saw, an electric grinder, an electric hammer drill, an electric chain saw, an electric wrench, an electric jigsaw, an electric hammer, an electric cutter, an electric canna, an electric marnoco, and an electric nailer (including a hammering machine). An electric mower, an electric hedge trimmer, or the like may be used.

In the above description, the electric tool is described as being driven by electric power supplied from a battery, but may be driven by electric power supplied from an AC power source such as a commercial power source.

DESCRIPTION OF SYMBOLS 1A ... Impact driver (electric tool), 2 ... Housing, 2A ... Motor housing, 2B ... Handle housing, 2C ... Battery mounting housing, 4 ... Body part, 6 ... Handle part, 7 ... Main switch (operation part), 8 ... Trigger operation member, 9 ... trigger signal output unit, 91 ... mode signal output unit, 28 ... forward / reverse switching lever, 29 ... battery mounting unit, 31 ... battery, 33 ... control unit (controller), 44 ... operation panel, AX ... Axis of rotation.

Claims (12)

A main body including a motor and a motor housing that houses the motor;
A battery mounting part to which a battery for driving the motor can be attached and detached;
A handle portion disposed between the motor housing and the battery mounting portion;
An operation unit that is arranged in at least one of the motor housing, the battery mounting unit, and the handle unit, and capable of a first operation to change an operation state;
With
The operation unit changes a rotation state of the motor when a second operation different from the first operation is performed.
An electric tool characterized by that. When the first operation is performed, the operation unit changes an operation state of a light disposed in at least one of the motor or the motor housing, the battery mounting unit, and the handle unit.
The power tool according to claim 1. In the second operation, the operation unit is operated by changing at least one of an operation amount, an operation time, and the number of operations from the first operation.
The power tool according to claim 1 or 2. A plurality of the operation units are arranged,
The second operation operates a plurality of the operation units in an order different from the first operation.
The power tool according to claim 1 or 2. A plurality of the operation units are arranged,
The second operation operates a plurality of the operation units in a combination different from the first operation.
The power tool according to claim 1 or 2. The operation unit is a trigger operation member for starting rotation of the motor,
When the trigger operation member is pulled in by the first pull-in amount, the motor starts rotating,
When the trigger operation member is pulled in with a second pull-in amount different from the first pull-in amount, the rotation state of the motor is changed.
The power tool according to claim 3. The operation unit is a button arranged on an operation panel,
When the button is pressed, the operation state of the light arranged in at least one of the motor or the motor housing, the battery mounting portion, and the handle portion is changed,
When the button is pressed long or pressed multiple times, the rotation state of the motor is changed.
The power tool according to claim 3. A main body including a motor and a motor housing that houses the motor;
A battery mounting part to which a battery for driving the motor can be attached and detached;
A handle portion disposed between the motor housing and the battery mounting portion;
A movable part arranged in at least one of the motor housing, the battery mounting part and the handle part and movable in a first direction;
With
When the movable portion is moved in a second direction different from the first direction, the rotation state of the motor is changed.
An electric tool characterized by that. The movable part is a trigger operation member for starting rotation of the motor,
When the trigger operation member moves backward, the motor starts rotating,
When the trigger operation member moves forward, the rotation state of the motor is changed.
The power tool according to claim 8. The movable part is a forward / reverse switching operation member capable of switching the rotation direction of the motor to a forward rotation direction and a reverse rotation direction,
When the forward / reverse switching operation member moves to the left and right, the rotation direction of the motor can be switched between the forward rotation direction and the reverse rotation direction,
When the forward / reverse switching operation member moves in the direction intersecting with the left and right, the rotation state of the motor is changed.
The power tool according to claim 8. The movable part is a speed changeover switch capable of switching a motor rotation speed between a low speed and a high speed,
When the speed change switch moves back and forth, the rotation speed of the motor is switched between low speed and high speed,
When the speed change switch moves downward, the rotation state of the motor is changed.
The power tool according to claim 8. The movable part is a change ring capable of adjusting an output torque,
When the change ring rotates, the output torque is adjusted,
When the change ring moves back and forth, the rotation state of the motor is changed.
The power tool according to claim 8.

Images