Electric tool

Abstract

The invention provides an electric tool capable of reducing the number of components of the electric tool. The electric tool includes: a motor; a battery mounting part including a main body-side terminal to which power from the battery is supplied; and a panel which is operated in order to change the control method of the motor. A resin portion that supports the panel includes a main body-side terminal.

Description

Technical Field

[0001] The technology disclosed in this specification relates to an electric tool. Background Art

[0002] In the technical field related to electric power tools, there is known an electric power tool including an operation display unit as disclosed in Patent Document 1.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2023-020813 Summary of the invention

[0006] The purpose of the technology disclosed in this specification is to reduce the number of components of an electric tool. In addition, the purpose of the technology disclosed in this specification is to suppress the enlargement of the electric tool. In addition, the purpose of the technology disclosed in this specification is to improve the visual clarity of the panel of the operation display unit and to improve the durability of the panel of the operation display unit.

[0007] The present specification discloses an electric tool. The electric tool may include: a motor; a battery mounting portion including a main body terminal to which power from a battery is supplied; and a panel operated to change a control method of the motor. A resin portion supporting the panel may include the main body terminal.

[0008] The present specification discloses an electric tool. The electric tool may include: a motor; a control circuit substrate that controls the motor; and a panel that is operated to change a control method of the motor. The resin portion that supports the panel may include the control circuit substrate.

[0009] The present specification discloses an electric tool. The electric tool may include: a motor having a rotor that rotates around a motor rotation axis extending in the front-rear direction; an output portion that is arranged at a position closer to the front than the motor and rotates based on the rotational force of the rotor; a housing having a motor housing portion that houses the motor, a grip portion that extends downward from the motor housing portion, and a battery holding portion connected to the lower end of the grip portion; a control circuit substrate that is housed in the grip portion and controls the motor; and a panel that is arranged at the rear of the battery holding portion and is operated to change a control method of the motor.

[0010] The present specification discloses an electric tool. The electric tool may include: a motor; a motor housing portion that houses the motor; a grip portion that extends from the motor housing portion; a battery holding portion that is used to install a battery for powering the motor; an elastic body that is disposed at a position between the grip portion and the battery holding portion; and a panel that is disposed at the rear of the battery holding portion and is operated to change a control method of the motor.

[0011] Effects of the Invention

[0012] According to the technology disclosed in this specification, the number of components of the electric tool can be reduced. In addition, according to the technology disclosed in this specification, the enlargement of the electric tool can be suppressed. In addition, according to the technology disclosed in this specification, the visual clarity of the panel of the operation display unit can be improved, and the durability of the panel of the operation display unit can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a perspective view showing the electric power tool according to the embodiment when viewed from the front.

[0014] Figure 2 It is a perspective view showing the electric power tool according to the embodiment when viewed from the rear.

[0015] Figure 3 It is a rear view showing the electric power tool according to the embodiment.

[0016] Figure 4 It is a plan view showing the electric power tool according to the embodiment.

[0017] Figure 5 It is a right side view showing the electric power tool according to the embodiment.

[0018] Figure 6 It is a longitudinal sectional view showing the electric power tool according to the embodiment.

[0019] Figure 7 It is a longitudinal sectional view showing the upper portion of the electric power tool according to the embodiment.

[0020] Figure 8 It is a transverse cross-sectional view showing an upper portion of the electric power tool according to the embodiment.

[0021] Fig. 9 It is a longitudinal sectional view showing the lower part of the electric power tool according to the embodiment.

[0022] Fig.10 It is a rear view showing the lower part of the electric tool according to the embodiment.

[0023] Fig.11It is a perspective view showing the lower portion of the electric tool according to the embodiment when viewed from the rear.

[0024] Fig.12 It is a cross-sectional view showing an operation display portion of the electric power tool according to the embodiment.

[0025] Fig.13 It is a block diagram showing an electric power tool according to the embodiment.

[0026] Fig.14 It is a longitudinal sectional view showing the lower part of the electric power tool according to the embodiment.

[0027] Fig.15 It is a longitudinal sectional view showing the lower part of the electric power tool according to the embodiment.

[0028] Fig.16 It is a diagram showing a modified example of the electric power tool according to the embodiment.

[0029] Fig.17 It is an exploded perspective view showing a part of the electric power tool according to the embodiment.

[0030] Fig.18 It is a cross-sectional view showing a part of a modified example of the electric power tool according to the embodiment.

[0031] Fig.19 It is an exploded perspective view showing a part of a modified example of the electric power tool according to the embodiment.

[0032] Fig. 20 It is a longitudinal sectional view showing the lower part of the electric power tool according to the embodiment.

[0033] Fig.21 It is a longitudinal sectional view showing the electric power tool according to the embodiment.

[0034] Fig. 22 It is a perspective view showing a modified example of the control circuit substrate and the trigger shifter according to the embodiment.

[0035] Fig.23 It is a perspective view showing the lower portion of the electric tool according to the embodiment when viewed from the rear.

[0036] Fig.24 It is a longitudinal sectional view showing the electric power tool according to the embodiment.

[0037] Fig.25 It is a rear view showing the electric power tool according to the embodiment.

[0038] Fig.26 It is an exploded perspective view showing the electric tool according to the embodiment when viewed from the front.

[0039] Fig. 27 It is a longitudinal sectional view showing the lower part of the electric power tool according to the embodiment.

[0040] Fig.28 It is a perspective view showing a control circuit substrate according to the embodiment.

[0041] Fig.29 It is a perspective view showing the lower portion of the electric tool according to the embodiment when viewed from the rear.

[0042] Fig.30 It is a perspective view showing the lower portion of the electric tool according to the embodiment when viewed from the rear.

[0043] Fig.31 It is a perspective view showing the lower portion of the electric tool according to the embodiment when viewed from the rear.

[0044] Fig.32 It is a perspective view showing the lower portion of the electric tool according to the embodiment when viewed from the rear.

[0045] Fig.33 It is a rear view showing the electric power tool according to the embodiment.

[0046] Fig.34 It is a block diagram showing an electric power tool according to the embodiment.

[0047] Fig.35 It is a right side view showing the electric power tool according to the embodiment.

[0048] Fig.36 It is a diagram schematically showing a control circuit substrate and a panel according to the embodiment.

[0049] Fig.37 It is a rear view showing the electric power tool according to the embodiment.

[0050] Fig.38 It is a perspective view showing the electric power tool according to the embodiment when viewed from the rear.

[0051] Fig.39 It is a perspective view showing the electric power tool according to the embodiment when viewed from the rear.

[0052] Fig.40 It is a perspective view showing the electric power tool according to the embodiment when viewed from the front.

[0053] Fig.41 It is a side view schematically showing the electric power tool according to the embodiment.

[0054] Fig.42It is a diagram schematically showing a part of the electric power tool according to the embodiment.

[0055] Fig.43 It is a perspective view showing a part of the electric tool according to the embodiment when viewed from the rear.

[0056] Fig.44 It is a longitudinal sectional view showing a part of the electric power tool according to the embodiment.

[0057] Fig.45 It is a diagram showing a control circuit board arranged in the internal space of the motor housing portion according to the embodiment.

[0058] Fig.46 It is a diagram showing a control circuit board arranged in the internal space of the gripping portion according to the embodiment.

[0059] Fig.47 It is a diagram showing a control circuit board arranged in the internal space of the battery holding portion according to the embodiment.

[0060] Fig.48 It is a diagram showing a control circuit board arranged in the internal space of the support part according to the embodiment.

[0061] Description of Reference Numerals

[0062] 1…power tool; 1E…power tool; 1F…power tool; 1G…power tool; 1H…power tool; 1J…power tool; 1K…power tool; 2…housing; 2B…lower housing; 2F…front housing; 2L…left housing; 2R…right housing; 2G…rear housing; 2U…upper housing; 2S…screw; 3…rear cover; 3S…screw; 4…hammer housing; 5A…hammer housing cover; 5B…buffer; 6…motor; 7…speed reduction mechanism; 8…spindle; 8A…flange; 8B…spindle shaft; 8C…convex portion; 8D…spindle groove; 9…striking mechanism; 10…anvil; 10A…tool hole; 10B…anvil recess; 10C…anvil shaft; 10D…anvil protrusion; 11…tool holding mechanism; 12… fan; 12A… bushing; 13… battery assembly; 13A… main body terminal; 13B… terminal holding portion; 14… trigger shifter; 15… forward / reverse switching shifter; 16… operation display portion; 16S… surface; 17… mode switching switch; 18… lamp assembly; 19… control circuit substrate; 19A… motor control circuit; 19B… rear end; 19C… substrate housing; 19S… surface; 20A… air inlet; 20B… exhaust port; 21… motor storage portion; 21B… rear end; 22… grip portion; 22A… front end; 22B… rear end; 23… battery holding portion; 23A… front end; 23B… rear end; 23R… recessed portion; 24… bearing box; 24A… recessed portion; 24B… convex portion; 2 5…Battery pack; 26…Stator; 27…Rotor; 28…Stator core; 29…Front insulator; 29S…Screw; 30…Rear insulator; 31…Coil; 32…Rotor core; 33…Rotor shaft; 33F…Front shaft; 33R…Rear shaft; 34…Rotor magnet; 35…Sensor magnet; 37…Sensor substrate; 38…Fuse terminal; 39…Rotor bearing; 39F…Front rotor bearing; 39R…Rear rotor bearing; 41…Pinion; 42…Planet gear; 42P…Pin; 43…Internal gear; 44…Spindle bearing; 45…Washer; 46…Anvil bearing; 46A…O-ring; 47…Hammer; 47A…Hole; 47B…Hammer groove; 47C…Concave portion; 47D…Hammer protrusion 48…ball bearing; 49…coil spring; 51…circuit board; 51S…surface; 52…switch element; 52A…first switch element; 52B…second switch element; 53…light emitting element; 55…panel; 55S…surface; 56…operating unit; 56A…first operating unit; 56B…second operating unit; 57…display unit; 60…resin unit; 61…resin unit; 62…elastic body; 63…lamp; 65…air inlet; 66…hook; 67…dial; 68…shifter; 69…touch panel; 70…microphone; 71…cover; 72…control circuit board; 73…light guide member; 74…speed reduction mechanism; 81…conducting wire; 82…conducting wire; 83…conducting wire; 84…conducting wire; 85…conducting wire; 86…conducting wire;110…output unit; 121…motor housing unit; 122…grip unit; 122A…first part; 122B…second part; 122C…third part; 123…battery holding unit; 190…control circuit substrate; 190A…control circuit; 190B…microcomputer; 190C…gate drive circuit; 190D…inverter circuit; 190E…capacitor; 190F…motor terminal; 190G…main body side terminal; 191…storage unit; 192…command output unit; 193…motor control unit; 194…display control unit; 195…battery connector; 196…side plate; 197…battery terminal; 206…motor; 210…output unit; 214…trigger shifter; 221…motor housing; 222…holding portion; 223…battery holding portion; 231…battery holding portion; 232…battery holding portion; 310…anvil; 321…motor housing; 322…holding portion; 323…battery holding portion; 413…main body side terminal; 422…holding portion; 425…battery pack; 502…housing; 510…anvil; 521…motor housing; 522…holding portion; 523…battery holding portion; 524…supporting portion; 525…battery pack; 610…output portion; 621…motor housing; 622…holding portion; 623…battery holding portion; AX…motor rotation axis; BX…rotation axis; G1…first distance; G2…second distance. ; DETAILED DESCRIPTION

[0063] In one or more embodiments, the electric tool may include: a motor; a battery assembly portion including a main body side terminal to which power is supplied from a battery; and a panel that is operated to change the control method of the motor. The resin portion supporting the panel may include the main body side terminal. The resin portion supporting the panel may also hold the main body side terminal. The resin portion supporting the panel may also be separate from the main body side terminal. The resin portion supporting the panel may also be integrated with the main body side terminal.

[0064] In the above configuration, the panel and the body-side terminal of the battery mounting portion are supported by one resin portion, so the number of components of the electric tool can be reduced. By reducing the number of components of the electric tool, the number of assembly steps of the electric tool can be reduced.

[0065] In one or more embodiments, the electric tool may include: a motor; a control circuit substrate that controls the motor; and a panel that is operated to change the control method of the motor. The resin portion that supports the panel may include the control circuit substrate. The resin portion that supports the panel may also hold the control circuit substrate. The resin portion that supports the panel may also be separate from the control circuit substrate. The resin portion that supports the panel may also be integrated with the control circuit substrate.

[0066] In the above configuration, the panel and the control circuit board are supported by one resin portion, so the number of components of the electric tool can be reduced. By reducing the number of components of the electric tool, the number of assembly steps of the electric tool can be reduced.

[0067] In one or more embodiments, the electric tool may include: a motor having a rotor that rotates around a motor rotation axis extending in the front-to-rear direction; an output portion that is arranged at a position closer to the front than the motor and rotates based on the rotational force of the rotor; a housing having a motor housing portion that houses the motor, a grip portion that extends downward from the motor housing portion, and a battery holding portion connected to the lower end of the grip portion; a control circuit substrate that is housed in the grip portion and controls the motor; and a panel that is arranged at the rear of the battery holding portion and is operated to change a control method for the motor.

[0068] In the above configuration, the control circuit board is accommodated in the grip portion, and thus it is possible to suppress an increase in the size of the electric tool.

[0069] In one or more embodiments, the electric tool may include: a motor; a motor housing portion that houses the motor; a grip portion that extends from the motor housing portion; a battery holding portion that is used to install a battery for powering the motor; an elastomer that is arranged at a position between the grip portion and the battery holding portion; and a panel that is arranged at the rear of the battery holding portion and is operated to change a control method of the motor.

[0070] In the above configuration, the elastic body can suppress the vibration of the motor from being transmitted to the panel, thereby improving the visibility of the panel and the durability of the panel.

[0071] In one or more embodiments, the electric power tool may include a light disposed in front of the battery holding portion.

[0072] In the above configuration, the work object of the electric power tool is illuminated by the light emitted from the lamp.

[0073] In one or more embodiments, the electric power tool may include a resin portion that supports the panel.

[0074] In the above-mentioned structure, the panel is appropriately supported.

[0075] In one or more embodiments, the panel may be in contact with the resin portion.

[0076] In the above configuration, the panel is directly supported by the resin portion, so the number of components of the electric power tool can be reduced.

[0077] In one or more embodiments, the panel may be fixed to the resin portion.

[0078] In the above configuration, relative movement between the panel and the resin portion can be suppressed.

[0079] In one or more embodiments, the panel and the circuit board face each other. The resin portion holds the circuit board.

[0080] In the above configuration, the resin portion supports not only the panel and the main body-side terminals but also the circuit board, so the number of components of the electric power tool can be reduced.

[0081] In one or more embodiments, the panel may include an elastic deformation portion. The circuit board may support the switch element, and the switch element may be operated by pressing the elastic deformation portion.

[0082] In the above configuration, the control method of the motor is changed by pressing the elastic deformation portion to operate the switch element.

[0083] In one or more embodiments, the panel may include a light-transmitting portion, and the circuit board may support a light-emitting element that irradiates light toward the light-transmitting portion.

[0084] In the above configuration, the light emitting state of the light emitting element changes along with the change of the motor control method, so that the operator can visually recognize that the motor control method has changed.

[0085] In one or more embodiments, the electric tool may include: a control circuit substrate for controlling the motor, and a housing for housing the control circuit substrate. The housing may include: a left housing, and a right housing fixed to the left housing by screws. The screws may pass through the resin portion.

[0086] In the above configuration, the screw does not pass through the resin portion from the outside, but passes through the resin portion, so that the size of the electric tool can be suppressed. In addition, in the above configuration, the housing can be easily assembled.

[0087] In one or more embodiments, the housing may include: a motor housing portion that houses the motor; a grip portion that extends downward from the motor housing portion; and a battery holding portion that is connected to a lower end of the grip portion. The battery assembly portion may be disposed at a lower portion of the battery holding portion. The panel may be disposed at the battery holding portion.

[0088] In the above configuration, an operator can easily operate the panel.

[0089] In one or more embodiments, the electric tool may include a trigger paddle disposed at the front of the grip portion and operated to start the motor. The panel may be disposed at the rear of the battery holding portion.

[0090] In the above configuration, since the panel is arranged at the rear of the battery holding portion, the operator can operate the panel or visually see the panel with the front of the electric tool facing the work object.

[0091] In one or more embodiments, the panel may be arranged in a recessed portion provided in the battery holding portion.

[0092] In the above configuration, the panel does not protrude from the surface of the battery holding portion, so that the operator can easily operate the electric power tool.

[0093] In one or more embodiments, the center of the panel may coincide with the center of the battery holding portion in the left-right direction.

[0094] In the above structure, the weight balance of the electric tool in the left-right direction is optimized. In addition, the operability and visual clarity of the panel are improved.

[0095] In one or more embodiments, the panel may be arranged at a position further rearward than a rear end portion of the grip portion.

[0096] In the above structure, the weight balance of the electric tool in the front-rear direction is optimized. In addition, the operability and visual clarity of the panel are improved.

[0097] In one or more embodiments, the panel may be arranged at a position further rearward than a rear end portion of the motor housing portion.

[0098] In the above structure, the weight balance of the electric tool in the front-rear direction is optimized. In addition, the operability and visual clarity of the panel are improved.

[0099] In one or more embodiments, the control circuit board may be accommodated in the battery holding portion.

[0100] In the above configuration, the distance between the panel and the control circuit board is shortened, thereby preventing the connection structure between the panel and the control circuit board from becoming larger and more complicated.

[0101] In one or more embodiments, the rear end portion of the control circuit substrate may be arranged at a position further rearward than the rear end portion of the grip portion.

[0102] In the above configuration, the weight balance of the electric power tool in the front-rear direction is optimized.

[0103] In one or more embodiments, the panel may be arranged at a rearward position relative to the control circuit board.

[0104] In the above configuration, the panel and the control circuit board do not overlap each other, so that the size of the battery holding portion can be suppressed and the weight balance of the electric power tool can be optimized.

[0105] In one or more embodiments, the surface of the panel may slope downward toward the rear.

[0106] In the above configuration, the operability and visual clarity of the panel are improved.

[0107] In one or more embodiments, a left-right dimension of the panel may be greater than a top-bottom dimension of the panel.

[0108] In the above configuration, the shape of the panel is long in the left-right direction, so the operability and visual clarity of the operation display portion are improved.

[0109] In one or more embodiments, the surface of the circuit board may be inclined downward toward the rear.

[0110] In the above configuration, the size of the electric tool can be suppressed. In addition, the operability and visual clarity of the panel are improved.

[0111] In one or more embodiments, the surface of the control circuit substrate may be parallel to the motor rotation axis.

[0112] In the above configuration, the circuit board and the control circuit board are arranged to face different directions, so that the size of the electric tool can be suppressed.

[0113] In one or more embodiments, the panel may be arranged at a position further rearward than a rear end portion of the motor housing portion.

[0114] In the above structure, the weight balance of the electric tool in the front-rear direction is optimized. In addition, the operability and visual clarity of the panel are improved.

[0115] In one or more embodiments, the electric tool may include: a motor having a rotor that rotates around a motor rotation axis extending in the front-rear direction; a speed reduction mechanism that reduces the speed of rotation from the motor; an output unit that is driven by the output from the speed reduction mechanism; a housing having a motor housing that houses the motor, a grip extending downward from the motor housing, a support in front of the grip, and a battery holding unit that is arranged below the support and is connected to the battery pack by sliding; a control circuit substrate that is accommodated in the housing and controls the motor; and a panel that is arranged at least one of the lower portion of the grip and the rear portion of the battery holding unit and is operated to change the control method of the motor. The panel may be arranged only at the lower portion of the grip, or only at the rear portion of the battery holding unit.

[0116] The following describes the embodiment with reference to the accompanying drawings. In the embodiment, the terms such as front, rear, left, right, top, and bottom are used to describe the positional relationship of each part. The above terms represent the relative position or direction based on the center of the power tool 1. The power tool 1 has a motor 6 as a power source.

[0117] In the embodiment, the direction parallel to the motor rotation axis AX of the motor 6 is appropriately referred to as the axial direction, the direction around the motor rotation axis AX is appropriately referred to as the circumferential direction or the rotation direction, and the radial direction of the motor rotation axis AX is appropriately referred to as the radial direction.

[0118] The motor rotation axis AX extends in the front-to-back direction. One axial side is the front, and the other axial side is the rear. In addition, in the radial direction, a position closer to the motor rotation axis AX or a direction close to the motor rotation axis AX is appropriately referred to as the radial inner side, and a position farther from the motor rotation axis AX or a direction away from the motor rotation axis AX is appropriately referred to as the radial outer side.

[0119] [First embodiment]

[0120] The first embodiment will be described.

[0121] <Power tools>

[0122] Figure 1 It is a perspective view showing the electric tool 1 according to the embodiment when viewed from the front. Figure 2 It is a perspective view showing the electric tool 1 according to the embodiment when viewed from the rear. Figure 3 It is a rear view showing the electric tool 1 according to the embodiment. Figure 4 It is a plan view showing the electric tool 1 according to the embodiment. Figure 5 It is a right side view showing the electric tool 1 according to the embodiment. Figure 6 It is a longitudinal sectional view showing the electric tool 1 according to the embodiment. Figure 7 It is a longitudinal sectional view showing the upper portion of the electric tool 1 according to the embodiment. Figure 8 It is a transverse cross-sectional view showing an upper portion of the electric tool 1 according to the embodiment.

[0123] In the embodiment, the electric tool 1 is an impact driver as a type of screw fastening tool. The electric tool 1 includes a housing 2, a rear cover 3, a hammer housing 4, a hammer housing cover 5A, a buffer 5B, a motor 6, a speed reduction mechanism 7, a spindle 8, a striking mechanism 9, an anvil 10, a tool holding mechanism 11, a fan 12, a battery mounting portion 13, a trigger shifter 14, a forward / reverse switching shifter 15, an operation display portion 16, a mode switching switch 17, a lamp assembly 18, and a control circuit substrate 19.

[0124] The housing 2 is made of synthetic resin. In the embodiment, the housing 2 is made of nylon. The housing 2 includes a left housing 2L and a right housing 2R disposed to the right of the left housing 2L. The left housing 2L and the right housing 2R are fixed by a plurality of screws 2S. The housing 2 is composed of a pair of half-split housings.

[0125] The housing 2 includes a motor housing portion 21 , a grip portion 22 , and a battery holding portion 23 .

[0126] The motor housing portion 21 has a cylindrical shape. The motor housing portion 21 houses the motor 6. The motor housing portion 21 houses at least a portion of the hammer case 4.

[0127] The grip portion 22 extends downward from the motor housing portion 21. The trigger lever 14 is provided at the front portion of the upper portion of the grip portion 22. The grip portion 22 is gripped by an operator.

[0128] The battery holding portion 23 is connected to the lower end portion of the grip portion 22. The outer dimensions of the battery holding portion 23 are larger than the outer dimensions of the grip portion 22 in the front-rear direction and the left-right direction.

[0129] The rear cover 3 is made of synthetic resin. The rear cover 3 is arranged at the rear position of the motor housing portion 21. The rear cover 3 accommodates at least a part of the fan 12. The fan 12 is arranged at the inner peripheral side of the rear cover 3. The rear cover 3 is arranged to cover the opening of the rear end portion of the motor housing portion 21. The rear cover 3 is fixed to the rear end portion of the motor housing portion 21 by two screws 3S.

[0130] The motor housing portion 21 has an air inlet 20A. The rear cover 3 has an air outlet 20B. The air in the external space of the housing 2 flows into the internal space of the housing 2 through the air inlet 20A. The air in the internal space of the housing 2 flows out to the external space of the housing 2 through the air outlet 20B.

[0131] The hammer housing 4 is made of metal. In the embodiment, the hammer housing 4 is made of aluminum. The hammer housing 4 is cylindrical. The hammer housing 4 is connected to the front of the motor housing 21. A bearing box 24 is fixed to the rear of the hammer housing 4. Threads are formed on the outer periphery of the bearing box 24. Thread grooves are formed on the inner periphery of the hammer housing 4. The bearing box 24 is fixed to the hammer housing 4 by combining the threads of the bearing box 24 with the thread grooves of the hammer housing 4. The hammer housing 4 is clamped by the left housing 2L and the right housing 2R. At least a portion of the hammer housing 4 is accommodated in the motor housing 21. The bearing box 24 is fixed to the motor housing 21 and the hammer housing 4, respectively.

[0132] The hammer case 4 accommodates the speed reduction mechanism 7, the spindle 8, and the striking mechanism 9. The hammer case 4 accommodates at least a portion of the anvil 10. At least a portion of the speed reduction mechanism 7 is disposed inside the bearing box 24. The speed reduction mechanism 7 includes a plurality of gears.

[0133] The hammer case cover 5A covers at least a part of the surface of the hammer case 4. The hammer case cover 5A protects the hammer case 4. The hammer case cover 5A can suppress contact between the hammer case 4 and objects around the hammer case 4.

[0134] The buffer 5B is disposed at the front of the hammer case 4. The buffer 5B has an annular shape. The buffer 5B can suppress the contact between the hammer case 4 and an object around the hammer case 4. The buffer 5B mitigates the impact when contacting an object.

[0135] The motor 6 is a power source of the electric tool 1. The motor 6 is an inner rotor type brushless motor. The motor 6 has a stator 26 and a rotor 27. The stator 26 is supported by the motor housing portion 21. At least a portion of the rotor 27 is arranged at an inner position of the stator 26. The rotor 27 rotates relative to the stator 26. The rotor 27 rotates around the motor rotation axis AX extending in the front-rear direction.

[0136] The stator 26 includes a stator core 28 , a front insulator 29 , a rear insulator 30 , and a coil 31 .

[0137] The stator core 28 is arranged radially outward from the rotor 27. The stator core 28 includes a plurality of stacked steel plates. The steel plates are metal plates mainly composed of iron. The stator core 28 is cylindrical. The stator core 28 has a plurality of teeth for supporting the coil 31.

[0138] The front insulator 29 is provided at the front of the stator core 28. The rear insulator 30 is provided at the rear of the stator core 28. The front insulator 29 and the rear insulator 30 are respectively electrical insulating members made of synthetic resin. The front insulator 29 is arranged to cover a part of the surface of the tooth. The rear insulator 30 is arranged to cover a part of the surface of the tooth.

[0139] The coil 31 is mounted on the stator core 28 via the front insulator 29 and the rear insulator 30. A plurality of coils 31 are arranged. The coil 31 is arranged around the teeth of the stator core 28 via the front insulator 29 and the rear insulator 30. The coil 31 is electrically insulated from the stator core 28 by the front insulator 29 and the rear insulator 30. The plurality of coils 31 are connected via the fuse terminal 38. The coil 31 is connected to the control circuit board 19 via a wire (not shown).

[0140] The rotor 27 rotates around the motor rotation axis AX and includes a rotor core portion 32 , a rotor shaft portion 33 , a rotor magnet 34 , and a sensor magnet 35 .

[0141] The rotor core portion 32 and the rotor shaft portion 33 are each made of steel. The rotor shaft portion 33 protrudes in the front-rear direction from the end surface of the rotor core portion 32. The rotor shaft portion 33 includes a front shaft portion 33F protruding forward from the front end surface of the rotor core portion 32, and a rear shaft portion 33R protruding rearward from the rear end surface of the rotor core portion 32.

[0142] The rotor magnet 34 is fixed to the rotor core portion 32 . The rotor magnet 34 is cylindrical. The rotor magnet 34 is arranged around the rotor core portion 32 .

[0143] The sensor magnet 35 is fixed to the rotor core portion 32 . The sensor magnet 35 is in an annular shape. The sensor magnet 35 is disposed on the front end surface of the rotor core portion 32 and the front end surface of the rotor magnet 34 .

[0144] The sensor substrate 37 is mounted on the front insulator 29. The sensor substrate 37 is fixed to the front insulator 29 by screws 29S. The sensor substrate 37 includes a disc-shaped circuit substrate having a hole at the center and a rotation detection element supported by the circuit substrate. At least a portion of the sensor substrate 37 is opposed to the sensor magnet 35. The rotation detection element detects the position of the rotor 27 in the rotation direction by detecting the position of the sensor magnet 35 of the rotor 27.

[0145] The rotor shaft portion 33 is rotatably supported by a rotor bearing 39. The rotor bearing 39 includes a front rotor bearing 39F that rotatably supports the front shaft portion 33F and a rear rotor bearing 39R that rotatably supports the rear shaft portion 33R.

[0146] The front rotor bearing 39F is held by the bearing box 24. The bearing box 24 has a recessed portion 24A that is recessed from the rear surface of the bearing box 24 toward the front. The front rotor bearing 39F is arranged in the recessed portion 24A. The rear rotor bearing 39R is held by the rear cover 3. The front end portion of the rotor shaft portion 33 is arranged in the internal space of the hammer case 4 through the opening of the bearing box 24.

[0147] A pinion gear 41 is formed at the front end portion of the rotor shaft portion 33. The pinion gear 41 is connected to at least a portion of the speed reduction mechanism 7. The rotor shaft portion 33 is connected to the speed reduction mechanism 7 via the pinion gear 41.

[0148] The speed reduction mechanism 7 is arranged at a position further forward than the motor 6. The speed reduction mechanism 7 connects the rotor shaft 33 and the main shaft 8. The speed reduction mechanism 7 transmits the rotation of the rotor 27 to the main shaft 8. The speed reduction mechanism 7 rotates the main shaft 8 at a rotation speed lower than the rotation speed of the rotor shaft 33. The speed reduction mechanism 7 includes a planetary gear mechanism.

[0149] The speed reduction mechanism 7 includes a plurality of gears. The gears of the speed reduction mechanism 7 are driven by the rotor 27 .

[0150] The speed reduction mechanism 7 includes a plurality of planetary gears 42 arranged around the pinion gear 41, and an internal gear 43 arranged around the plurality of planetary gears 42. The pinion gear 41, the planetary gears 42, and the internal gear 43 are respectively accommodated in the hammer housing 4. The plurality of planetary gears 42 are respectively meshed with the pinion gear 41. The planetary gears 42 are rotatably supported on the main shaft 8 by means of pins 42P. The main shaft 8 is rotated by the planetary gears 42. The internal gear 43 has internal teeth meshing with the planetary gears 42. The internal gear 43 is fixed to the hammer housing 4. The internal gear 43 cannot always rotate relative to the hammer housing 4.

[0151] When the rotor shaft 33 is rotated by the drive of the motor 6, the pinion 41 rotates, and the planetary gear 42 revolves around the pinion 41. The planetary gear 42 revolves while meshing with the internal teeth of the internal gear 43. The main shaft 8 connected to the planetary gear 42 via the pin 42P rotates at a rotation speed lower than the rotation speed of the rotor shaft 33 due to the revolution of the planetary gear 42.

[0152] The spindle 8 is arranged at a position closer to the front than at least a part of the motor 6. The spindle 8 is arranged at a position closer to the front than the stator 26. At least a part of the spindle 8 is arranged at a position closer to the front than the rotor 27. At least a part of the spindle 8 is arranged at a position in front of the reduction mechanism 7. The spindle 8 is arranged at a position behind the anvil 10. The spindle 8 is rotated by the rotor 27. The spindle 8 is rotated by the rotational force of the rotor 27 transmitted by the reduction mechanism 7. The spindle 8 transmits the rotational force of the motor 6 to the anvil 10.

[0153] The main shaft 8 has a flange portion 8A and a main shaft portion 8B protruding forward from the flange portion 8A. The planetary gear 42 is supported by the flange portion 8A in a rotatable manner by means of a pin 42P. The rotation axis of the main shaft 8 coincides with the motor rotation axis AX of the motor 6. The main shaft 8 rotates around the motor rotation axis AX. The main shaft 8 is supported by the main shaft bearing 44 in a rotatable manner. A convex portion 8C is provided at the rear end portion of the main shaft 8. The convex portion 8C protrudes backward from the flange portion 8A. The convex portion 8C is configured to surround the main shaft bearing 44.

[0154] The bearing box 24 is arranged at least partially around the spindle 8. The spindle bearing 44 is held by the bearing box 24. The bearing box 24 has a convex portion 24B protruding forward from the front surface of the bearing box 24. The spindle bearing 44 is arranged around the convex portion 24B.

[0155] The striking mechanism 9 is driven by the motor 6. The rotational force of the motor 6 is transmitted to the striking mechanism 9 via the speed reduction mechanism 7 and the main shaft 8. The striking mechanism 9 strikes the anvil 10 in the rotational direction based on the rotational force of the main shaft 8 rotated by the motor 6. The striking mechanism 9 includes a hammer 47, a ball 48, and a coil spring 49. The striking mechanism 9 including the hammer 47 is accommodated in the hammer housing 4.

[0156] The hammer 47 is arranged at a position further forward than the speed reduction mechanism 7. The hammer 47 is arranged around the main shaft 8. The hammer 47 is held by the main shaft 8. The ball 48 is arranged at a position between the main shaft 8 and the hammer 47. The coil spring 49 is supported by the main shaft 8 and the hammer 47, respectively.

[0157] The hammer 47 has a cylindrical shape. The hammer 47 is arranged around the main shaft portion 8B. The hammer 47 has a hole 47A for arranging the main shaft portion 8B.

[0158] The hammer 47 is rotated by the motor 6. The rotational force of the motor 6 is transmitted to the hammer 47 via the speed reduction mechanism 7 and the main shaft 8. The hammer 47 can rotate together with the main shaft 8 based on the rotational force of the main shaft 8 rotated by the motor 6. The rotation axis of the hammer 47, the rotation axis of the main shaft 8, and the motor rotation axis AX of the motor 6 are consistent. The hammer 47 rotates around the motor rotation axis AX.

[0159] The ball 48 is made of metal such as steel. The ball 48 is arranged at a position between the main shaft portion 8B and the hammer 47. The main shaft 8 has a main shaft groove 8D for arranging at least a part of the ball 48. The main shaft groove 8D is provided at a part of the outer peripheral surface 8S of the main shaft portion 8B. The hammer 47 has a hammer groove 47B for arranging at least a part of the ball 48. The hammer groove 47B is provided at a part of the inner surface of the hammer 47. The ball 48 is arranged at a position between the main shaft groove 8D and the hammer groove 47B. The ball 48 can roll on the inner side of the main shaft groove 8D and the inner side of the hammer groove 47B respectively. The hammer 47 can move along with the ball 48. The main shaft 8 and the hammer 47 can move relative to each other in the axial direction and the rotational direction within the movable range defined by the main shaft groove 8D and the hammer groove 47B.

[0160] The coil spring 49 generates an elastic force for moving the hammer 47 forward. The coil spring 49 is arranged between the flange 8A and the hammer 47. An annular recess 47C is provided on the rear surface of the hammer 47. The recess 47C is recessed from the rear surface of the hammer 47 toward the front. A washer 45 is provided inside the recess 47C. The rear end of the coil spring 49 is supported by the flange 8A. The front end of the coil spring 49 is arranged inside the recess 47C and supported by the washer 45.

[0161] The anvil 10 is arranged at a position closer to the front than the motor 6. The anvil 10 is an output part of the electric tool 1 that rotates based on the rotational force of the rotor 27. At least a part of the anvil 10 is arranged at a position closer to the front than the hammer 47. The anvil 10 has a tool hole 10A for inserting a front end tool. The tool hole 10A is provided at the front end of the anvil 10. The front end tool is assembled to the anvil 10.

[0162] The anvil 10 has an anvil recess 10B. The anvil recess 10B is provided at the rear end of the anvil 10. The anvil recess 10B is recessed from the rear end of the anvil 10 toward the front. The spindle 8 is arranged behind the anvil 10. The front end of the spindle shaft 8B is arranged in the anvil recess 10B.

[0163] The anvil 10 has a rod-shaped anvil shaft portion 10C and an anvil protrusion portion 10D. A tool hole 10A is provided at the front end portion of the anvil shaft portion 10C. A front end tool is mounted on the anvil shaft portion 10C. The anvil protrusion portion 10D is provided at the rear end portion of the anvil 10. The anvil protrusion portion 10D protrudes radially outward from the rear end portion of the anvil shaft portion 10C.

[0164] The anvil 10 is supported by the anvil bearing 46 in a rotatable manner. The rotation axis of the anvil 10, the rotation axis of the hammer 47, the rotation axis of the spindle 8, and the motor rotation axis AX of the motor 6 are consistent. The anvil 10 rotates around the motor rotation axis AX. The anvil bearing 46 is arranged at an inner position of the hammer housing 4. The anvil bearing 46 is retained by the hammer housing 4. In the embodiment, two anvil bearings 46 are arranged in the axial direction. The anvil bearing 46 supports the front part of the anvil shaft portion 10C so that it can rotate. An O-ring 46A is arranged between the anvil bearing 46 and the anvil shaft portion 10C.

[0165] At least a portion of the hammer 47 can contact the anvil protrusion 10D. A hammer protrusion 47D protruding forward is provided at the front of the hammer 47. The hammer protrusion 47D can contact the anvil protrusion 10D. When the hammer 47 is in contact with the anvil protrusion 10D, the motor 6 is driven to rotate the anvil 10, the hammer 47, and the spindle 8 together.

[0166] The anvil 10 is struck in the rotation direction by the hammer 47. For example, in a screw tightening operation, when the load acting on the anvil 10 becomes large, sometimes a situation occurs in which the anvil 10 cannot be rotated only by the power generated by the motor 6. When the anvil 10 cannot be rotated only by the power generated by the motor 6, the rotation of the anvil 10 and the hammer 47 stops. The spindle 8 and the hammer 47 can move relative to each other in the axial direction and the circumferential direction respectively by means of the ball 48. Even if the rotation of the hammer 47 stops, the rotation of the spindle 8 continues by the power generated by the motor 6. When the spindle 8 rotates in a state where the rotation of the hammer 47 stops, the ball 48 moves toward the rear while being guided by the spindle groove 8D and the hammer groove 47B respectively. The hammer 47 receives force from the ball 48 and moves toward the rear along with the ball 48. That is, in a state where the rotation of the anvil 10 is stopped, the hammer 47 is moved backward by the rotation of the spindle 8. The hammer 47 is moved backward, and the contact between the hammer 47 and the anvil protrusion 10D is released.

[0167] The coil spring 49 generates a force for moving the hammer 47 forward. The hammer 47 moved to the rear is moved forward by the elastic force of the coil spring 49. When the hammer 47 moves forward, it receives a force in the rotation direction from the ball 48. That is, the hammer 47 moves forward while rotating. When the hammer 47 moves forward while rotating, the hammer 47 contacts the anvil protrusion 10D while rotating. Accordingly, the anvil protrusion 10D is struck in the rotation direction by the hammer protrusion 47D of the hammer 47. Both the power of the motor 6 and the inertia force of the hammer 47 act on the anvil 10. Therefore, the anvil 10 can rotate around the motor rotation axis AX with a high torque.

[0168] The tool holding mechanism 11 is disposed around the front portion of the anvil 10 . The tool holding mechanism 11 holds a tip tool inserted into the tool hole 10A of the anvil 10 .

[0169] The fan 12 is arranged at a position further rearward than the stator 26 of the motor 6. The fan 12 generates an airflow for cooling the motor 6. The fan 12 is fixed to at least a portion of the rotor 27. The fan 12 is fixed to the rear of the rear shaft portion 33R by means of a bushing 12A. The fan 12 is arranged at a position between the rear rotor bearing 39R and the stator 26. The fan 12 rotates by the rotation of the rotor 27. The fan 12 rotates together with the rotor shaft portion 33 by the rotation of the rotor shaft portion 33. The rotation of the fan 12 causes the air in the external space of the housing 2 to flow into the internal space of the housing 2 through the air inlet 20A. The air flowing into the internal space of the housing 2 cools the motor 6 by circulating in the internal space of the housing 2. The air circulating in the internal space of the housing 2 rotates with the fan 12 and flows out to the external space of the housing 2 through the exhaust port 20B.

[0170] The battery mounting portion 13 is arranged at the lower part of the battery holding portion 23. The battery mounting portion 13 is connected to the battery pack 25. The battery pack 25 is mounted on the battery mounting portion 13. The battery holding portion 23 holds the battery pack 25 via the battery mounting portion 13. The battery pack 25 is mounted on the battery holding portion 23 via the battery mounting portion 13. The battery pack 25 can be mounted on the battery mounting portion 13. The battery pack 25 is mounted on the battery mounting portion 13 by being inserted into the battery mounting portion 13 from the front of the battery holding portion 23. The battery pack 25 is removed from the battery mounting portion 13 by being pulled out from the battery mounting portion 13 toward the front. The battery pack 25 includes a secondary battery. In the embodiment, the battery pack 25 includes a rechargeable lithium-ion battery. The battery pack 25 can supply power to the electric tool 1 by being mounted on the battery mounting portion 13. The motor 6 is driven by the electric power supplied from the battery pack 25. The operation display unit 16 is operated by the electric power supplied from the battery pack 25. The control circuit board 19 is operated by the electric power supplied from the battery pack 25.

[0171] The battery assembly portion 13 includes: a main body side terminal 13A and a terminal holding portion 13B. The main body side terminal 13A includes: a main body side power terminal connected to the power terminal of the battery pack 25, and a main body side communication terminal connected to the communication terminal of the battery pack 25. The power from the battery pack 25 is supplied to the main body side terminal 13A. The power from the battery pack 25 supplied to the main body side terminal 13A is supplied to the motor 6 via the control circuit substrate 19. The terminal holding portion 13B is made of synthetic resin. The terminal holding portion 13B is fixed to the battery holding portion 23. The terminal holding portion 13B is clamped by the left shell 2L and the right shell 2R.

[0172] The trigger paddle 14 is provided on the grip portion 22. The trigger paddle 14 is operated by the operator to start the motor 6. By operating the trigger paddle 14, the driving and stopping of the motor 6 are switched.

[0173] The forward / reverse switching lever 15 is provided at the upper part of the gripping portion 22. The forward / reverse switching lever 15 is operated by the operator. By operating the forward / reverse switching lever 15, the rotation direction of the motor 6 is switched from one of the forward direction and the reverse direction to the other. By switching the rotation direction of the motor 6, the rotation direction of the spindle 8 is switched.

[0174] The operation display unit 16 is arranged at the rear of the battery holding unit 23. The operation display unit 16 is operated by an operator to change the operation mode of the motor 6. The operation display unit is not provided at the front, left, and right of the battery holding unit 23.

[0175] The mode switching switch 17 is provided on the upper portion of the trigger lever 14. The mode switching switch 17 is operated by an operator to switch the operation mode of the motor 6.

[0176] The lamp assembly 18 emits illumination light. The lamp assembly 18 illuminates the anvil 10 and the periphery of the anvil 10 with illumination light. The lamp assembly 18 illuminates the front of the anvil 10 with illumination light. In addition, the lamp assembly 18 illuminates the front end tool mounted on the anvil 10 and the periphery of the front end tool with illumination light. In the embodiment, the lamp assembly 18 is respectively arranged at: the left part and the right part of the hammer housing 4.

[0177] The control circuit board 19 functions as at least a controller of the electric tool 1 for controlling the motor 6. The control circuit board 19 outputs a control signal for controlling the motor 6. The control circuit board 19 includes a printed circuit board (PCB) on which a plurality of electronic components are mounted. The electronic components are mounted on a surface 19S of the control circuit board 19. The surface 19S of the control circuit board 19 faces upward.

[0178] As electronic components mounted on the printed circuit board, there can be exemplified a processor such as a CPU (Central Processing Unit), a nonvolatile memory such as a ROM (Read Only Memory) or a saver, a volatile memory such as a RAM (Random Access Memory), a transistor, and a resistor. The control circuit board 19 is housed in the battery holding portion 23 while being held in the resin portion 60. The control circuit board 19 is arranged at an inner position of the battery holding portion 23.

[0179] The control circuit board 19 switches the operation mode of the motor 6 based on the operation content of the electric tool 1. The operation mode of the motor 6 refers to the control method or control form of the motor 6. The operation mode of the motor 6 is changed by operating at least one of the operation display unit 16 and the mode switching switch 17.

[0180] like Figure 5 As shown, in the front-to-back direction, the first distance G1 between the front end 22A of the lower end of the holding portion 22 and the front end 23A of the battery holding portion 23 is set to be shorter than the second distance G2 between the rear end 22B of the lower end of the holding portion 22 and the rear end 23B of the battery holding portion 23, or equal to the second distance G2.

[0181] like Figure 6As shown, in the front-rear direction, the rear end portion 19B of the control circuit board 19 is arranged at a position further rearward than the rear end portion 22B of the grip portion 22 .

[0182] As described above, electronic components are mounted on the surface 19S of the control circuit board 19. The surface 19S of the control circuit board 19 faces upward. The surface 19S of the control circuit board 19 is parallel to the motor rotation axis AX.

[0183] <Operation display>

[0184] Fig. 9 It is a longitudinal sectional view showing the lower part of the electric tool 1 according to the embodiment. Fig.10 It is a rear view showing the lower part of the electric tool 1 according to the embodiment. Fig.11 It is a perspective view showing the lower portion of the electric tool 1 according to the embodiment when viewed from the rear. Fig.12 is a cross-sectional view showing the operation display unit 16 of the electric tool 1 according to the embodiment, and corresponds to Fig.10 A-A line cross-sectional view.

[0185] The operation display unit 16 is arranged at the rear of the battery holding unit 23. The operation display unit 16 is arranged at a recess 23R provided in the battery holding unit 23. The operation display unit 16 is arranged at a position further rearward than the control circuit board 19. The operation display unit 16 is connected to the control circuit board 19.

[0186] The operation display unit 16 includes a circuit board 51 , a switch element 52 , a light emitting element 53 , and a panel 55 .

[0187] The circuit board 51 includes a printed circuit board (PCB) on which a plurality of electronic components are mounted. The electronic components are mounted on a surface 51S of the circuit board 51. The surface 51S of the circuit board 51 faces upward and rearward. The surface 51S of the circuit board 51 is inclined downward toward the rear.

[0188] The switch element 52 and the light emitting element 53 are supported by the circuit board 51 . The switch element 52 and the light emitting element 53 are mounted on the circuit board 51 . The switch element 52 and the light emitting element 53 are mounted on the surface 51S of the circuit board 51 .

[0189] The panel 55 is operated by the operator to change the operation mode indicating the control method or control form of the motor 6. The panel 55 is a plate-shaped member made of synthetic resin. The panel 55 is arranged at the rear of the battery holding portion 23. The panel 55 is arranged in the recess 23R provided in the battery holding portion 23. The panel 55 is arranged at a position further rearward than the control circuit substrate 19.

[0190] The panel 55 is opposed to the circuit board 51. The panel 55 is configured to cover the switch element 52 and the light emitting element 53 respectively. The surface 16S of the operation display unit 16 includes the surface 55S of the panel 55. The surface 16S of the operation display unit 16 faces upward and rearward. The surface 55S of the panel 55 is inclined downward toward the rear.

[0191] The switch element 52 is operated via the panel 55. The panel 55 has an operating portion 56 disposed just above the switch element 52. The operating portion 56 includes an elastic deformation portion provided at least in part of the panel 55. The switch element 52 is operated via the panel 55 by an operator pressing the operating portion 56 of the panel 55.

[0192] A plurality of light emitting elements 53 are arranged in the left-right direction. In the embodiment, five light emitting elements 53 are arranged in the left-right direction. As the light emitting element 53, a light emitting diode (LED) can be exemplified. The light emitted from the light emitting element 53 is emitted to the outside of the battery retaining portion 23 via the panel 55. The panel 55 includes: a display unit 57 arranged at a position directly above the light emitting element 53. The display unit 57 includes: a light transmitting portion provided on at least a portion of the panel 55. The light emitting element 53 irradiates light toward the display unit 57. The operator can visually see the light emitting state of the light emitting element 53 via the display unit 57.

[0193] In the embodiment, the switch element 52 includes a first switch element 52A and a second switch element 52B. The operation portion 56 includes a first operation portion 56A disposed just above the first switch element 52A and a second operation portion 56B disposed just above the second switch element 52B.

[0194] By operating the first operating portion 56A, the first switch element 52A is operated via the first operating portion 56A. By operating the second operating portion 56B, the second switch element 52B is operated via the second operating portion 56B. The operator can operate the switch element 52 while holding the grip portion 22.

[0195] In the embodiment, five display units 57 are arranged in the left-right direction so as to correspond to the five light emitting elements 53. Light emitted from the light emitting element 53 passes through the display unit 57 as a light transmitting portion. The operator can visually check the light emitting state of the light emitting element 53 through the display unit 57.

[0196] like Figure 3 as well as Fig.10 As shown, the center of the operation display unit 16 in the left-right direction coincides with the center of the battery holding unit 23. The center of the operation display unit 16 in the left-right direction includes the center of the panel 55 in the left-right direction.

[0197] The left-right dimension of the operation display unit 16 is greater than the up-down dimension of the operation display unit 16. That is, the operation display unit 16 is longer in the left-right direction. The left-right dimension of the operation display unit 16 includes the left-right dimension of the panel 55. The up-down dimension of the operation display unit 16 includes the up-down dimension of the panel 55.

[0198] In the embodiment, the first operating unit 56A is arranged at the left portion of the panel 55. The second operating unit 56B is arranged at the right portion of the panel 55. In the left-right direction, the display unit 57 is arranged at a position between the first operating unit 56A and the second operating unit 56B.

[0199] like Figure 5 as well as Figure 6 As shown, in the front-to-back direction, the panel 55 is arranged at a position further back than the rear end 22B of the grip portion 22. In the front-to-back direction, the panel 55 is arranged at a position further back than the rear end 21B of the motor housing portion 21. In the front-to-back direction, the panel 55 is arranged at a position further back than the rear cover 3.

[0200] The resin portion 60 supports the panel 55. The resin portion 60 holds the control circuit board 19. The resin portion 60 holds the circuit board 51. The panel 55 is in contact with the rear portion of the resin portion 60. The panel 55 is fixed to the rear portion of the resin portion 60. The rear portion of the resin portion 60 is arranged in the recess 23R provided in the battery holding portion 23.

[0201] The resin portion 60 is fixed to the battery holding portion 23. The resin portion 60 is sandwiched between the left housing 2L and the right housing 2R. The panel 55, the control circuit board 19, and the circuit board 51 are fixed to the battery holding portion 23 via the resin portion 60, respectively.

[0202] The control circuit board 19 , the circuit board 51 , the switch element 52 , the light emitting element 53 , and the resin portion 60 are respectively arranged at inner positions of the battery holding portion 23 .

[0203] As described above, the terminal holding portion 13B is made of synthetic resin. The terminal holding portion 13B and the resin portion 60 are separate bodies. Alternatively, the terminal holding portion 13B and the resin portion 60 may be integrated.

[0204] In the embodiment, the operation mode of the motor 6 is switched by operating the switch element 52 via the operation unit 56. In the embodiment, the operation mode of the motor 6 includes a striking force mode as a general mode and a dedicated mode dedicated to a work object. In the embodiment, the striking force mode is switched by operating the first switch element 52A. The dedicated mode is switched by operating the second switch element 52B.

[0205] As an example, the striking force mode includes the fastest mode, the strong mode, the medium mode, and the weak mode. The special mode includes the wood mode, the self-tapping screw mode, and the bolt mode. An area for displaying text about the content displayed by the light emitting element 53 is provided below the display unit 57 in the operation display unit 16.

[0206] The circuit board 51 generates an operation signal by operating the switch element 52 through the operation unit 56. The circuit board 51 and the control circuit board 19 are connected by a wire (not shown). The operation signal generated in the circuit board 51 is sent to the control circuit board 19 via the wire. The control circuit board 19 sets the operation mode of the motor 6 based on the operation signal sent from the circuit board 51.

[0207] like Fig.13 As shown, the control circuit board 19 includes a storage unit 191 , a command output unit 192 , a motor control unit 193 , and a display control unit 194 .

[0208] The storage unit 191 stores a plurality of operation modes of the motor 6 (fastest mode, strong mode, medium mode, weak mode, wood mode, self-tapping screw mode, and bolt mode).

[0209] The command output unit 192 outputs a mode command for setting the operation mode by operating the operation unit 56 of the operation display unit 16. That is, the command output unit 192 outputs a mode command for setting the operation mode of the motor 6 based on the operation signal from the circuit board 51.

[0210] The motor control unit 193 outputs a motor control signal for controlling the motor 6 based on the mode command output from the command output unit 192. The motor control unit 193 controls the motor 6 based on the operation mode set by the operation of the operation unit 56.

[0211] The display control unit 194 outputs a display control signal for controlling the display unit 57 (light emitting element 53) of the operation display unit 16 based on the mode command output from the command output unit 192. The display control signal output from the display control unit 194 is sent to the circuit board 51 via a wire. The circuit board 51 controls the display unit 57 based on the display control signal from the display control unit 194. The circuit board 51 causes the plurality of light emitting elements 53 to operate in light emission patterns corresponding to the set operation modes.

[0212] <Operation of impact tool>

[0213] Next, the operation of the electric tool 1 will be described. For example, when a screw-tightening operation is performed on an object to be worked on, a front end tool (driving drill) used in the screw-tightening operation is inserted into the tool hole 10A of the anvil 10. The front end tool inserted into the tool hole 10A is held by the tool holding mechanism 11. After the front end tool is mounted on the anvil 10, the operator, for example, holds the grip 22 with the right hand and pulls the trigger paddle 14 with the index finger of the right hand. When the trigger paddle 14 is pulled, power is supplied from the battery pack 25 to the motor 6, so that the motor 6 is started and the lamp assembly 18 is lit. The start of the motor 6 causes the rotor shaft 33 of the rotor 27 to rotate. When the rotor shaft 33 rotates, the rotational force of the rotor shaft 33 is transmitted to the planetary gear 42 via the pinion 41. The planetary gear 42 rotates while revolving around the pinion 41 while meshing with the internal teeth of the internal gear 43. The planetary gear 42 is rotatably supported by the main shaft 8 via the pin 42P. The main shaft 8 is rotated at a rotation speed lower than the rotation speed of the rotor shaft portion 33 by the revolution of the planetary gear 42.

[0214] When the spindle 8 rotates while the hammer 47 is in contact with the anvil protrusion 10D, the anvil 10 rotates together with the hammer 47 and the spindle 8. The rotation of the anvil 10 allows the screw tightening operation to proceed.

[0215] When a load exceeding a specified value is applied to the anvil 10 by the screw tightening operation, the rotation of the anvil 10 and the hammer 47 stops. When the main shaft 8 rotates while the rotation of the hammer 47 stops, the hammer 47 moves backward. The contact between the hammer 47 and the anvil protrusion 10D is released by the movement of the hammer 47 backward. The hammer 47 moved backward rotates and moves forward by the elastic force of the coil spring 49. The hammer 47 rotates and moves forward, so that the anvil 10 is hit by the hammer 47 in the rotation direction. Accordingly, the anvil 10 rotates with a high torque around the motor rotation axis AX. Accordingly, the screw is tightened to the work object with a high torque.

[0216] During the screw tightening operation, when the operator wants to change the operation mode of the motor 6, the operator can operate the operation portion 56 of the operation display portion 16 while the front portion of the power tool 1 is facing the operation object. That is, the operator can operate the operation portion 56 of the operation display portion 16 with the left hand without pulling the power tool 1 back to the hand while, for example, holding the grip portion 22 with the right hand, maintaining the working posture of the power tool 1 unchanged. In addition, when the operation mode of the motor 6 is changed, the display pattern of the display portion 57 (the light emitting pattern of the light emitting element 53) will change. The operator can visually see the display portion 57 of the operation display portion 16 without pulling the power tool 1 back to the hand while maintaining the working posture of the power tool 1 unchanged.

[0217] <Effect>

[0218] As described above, in the embodiment, the electric tool 1 includes the motor 6, the control circuit board 19 that controls the motor 6, and the panel 55 that is operated to change the control method of the motor 6. The resin portion 60 that supports the panel 55 holds the control circuit board 19.

[0219] In the above configuration, the panel 55 and the control circuit board 19 are supported by one resin portion 60, so that the number of components of the electric tool 1 can be reduced. By reducing the number of components of the electric tool 1, the number of assembly steps of the electric tool 1 can be reduced.

[0220] In the embodiment, the panel 55 is in contact with the resin portion 60 .

[0221] In the above-described configuration, the panel 55 is directly supported by the resin portion 60 , and therefore the number of components of the electric power tool 1 can be reduced.

[0222] In the embodiment, the panel 55 is fixed to the resin portion 60 .

[0223] In the above-described configuration, relative movement between the panel 55 and the resin portion 60 can be suppressed.

[0224] In the embodiment, the panel 55 faces the circuit board 51 . The resin portion 60 holds the circuit board 51 .

[0225] In the above configuration, the resin portion 60 supports not only the panel 55 and the control circuit board 19 but also the circuit board 51 , so the number of components of the electric power tool 1 can be reduced.

[0226] In the embodiment, the panel 55 has an operating portion 56 as an elastic deformation portion. The circuit board 51 supports the switch element 52, and the switch element 52 is operated by pressing the operating portion 56.

[0227] In the above-described configuration, the control method of the motor 6 is changed by pressing the operation portion 56 to operate the switch element 52 .

[0228] In the embodiment, the panel 55 includes a display portion 57 as a light transmitting portion. The circuit board 51 supports the light emitting element 53 that irradiates light toward the display portion 57 .

[0229] In the above configuration, the light emitting state of the light emitting element 53 changes along with the change of the control method of the motor 6 , so that the operator can visually recognize that the control method of the motor 6 has changed.

[0230] In an embodiment, the electric tool 1 comprises: a motor 6 having a rotor 27 that rotates around a motor rotation axis AX extending in the front-to-back direction; an anvil 10 as an output portion, which is arranged at a position closer to the front than the motor 6 and rotates based on the rotational force of the rotor 27; a housing 2 having a motor housing portion 21 for housing the motor 6, a gripping portion 22 extending downward from the motor housing portion 21, and a battery retaining portion 23 connected to the lower end of the gripping portion 22; a control circuit substrate 19 that is housed in the housing 2; and an operation display portion 16 that is arranged at the rear of the housing 2 and connected to the control circuit substrate 19.

[0231] In the above configuration, the operation display unit 16 is arranged at the rear portion of the housing, so the operator can operate the operation display unit 16 or visually see the operation display unit 16 while the front portion of the power tool 1 is facing the work object. That is, the operator can operate the operation display unit 16 or visually see the operation display unit 16 without pulling the power tool 1 back to the hand while holding the grip portion 22 with his hand, without having to hold the power tool 1 back to the hand. Accordingly, it is possible to suppress the reduction in the operability and visual visibility of the operation display unit 16. In addition, since the operation display unit 16 is arranged at the rear portion of the housing 2, it is not necessary to provide an area for providing the operation display unit 16 at the front portion of the housing 2. Therefore, the weight balance of the power tool 1 is optimized.

[0232] In the embodiment, the operation display unit 16 is arranged at the rear portion of the battery holding portion 23 .

[0233] In the above configuration, the operation display unit 16 is arranged at the rear of the battery holding unit 23, so the operator can operate the operation display unit 16 or visually see the operation display unit 16 while the front of the electric tool 1 is facing the work object. In addition, since the operation display unit 16 is arranged at the rear of the battery holding unit 23, it is not necessary to provide an area for arranging the operation display unit 16 at the front of the battery holding unit 23. Therefore, the weight balance of the electric tool 1 is optimized.

[0234] In the embodiment, the operation display unit 16 is arranged in the recessed portion 23R provided in the battery holding portion 23 .

[0235] In the above-described configuration, the operation display unit 16 does not protrude from the surface of the battery holding unit 23 , so that the operator can easily operate the electric power tool 1 .

[0236] In the embodiment, the center of the operation display unit 16 and the center of the battery holding unit 23 coincide with each other in the left-right direction.

[0237] In the above-described configuration, the weight balance of the electric tool 1 in the left-right direction is optimized. In addition, the operability and visibility of the operation display unit 16 are improved.

[0238] In the embodiment, the dimension of the operation display unit 16 in the left-right direction is larger than the dimension of the operation display unit 16 in the up-down direction.

[0239] In the above-described configuration, the shape of the operation display unit 16 is long in the left-right direction, so the operability and visibility of the operation display unit 16 are improved.

[0240] In the embodiment, the operation display unit 16 is arranged at a position further rearward than the rear end portion 22B of the grip portion 22 .

[0241] In the above-described configuration, the weight balance of the electric power tool 1 in the front-rear direction is optimized. In addition, the operability and visibility of the operation display unit 16 are improved.

[0242] In the embodiment, the operation display unit 16 is arranged at a position further rearward than the rear end portion 21B of the motor housing portion 21 .

[0243] In the above-described configuration, the weight balance of the electric power tool 1 in the front-rear direction is optimized. In addition, the operability and visibility of the operation display unit 16 are improved.

[0244] In the embodiment, the control circuit board 19 is accommodated in the battery holding portion 23 .

[0245] In the above configuration, the distance between the operation display unit 16 and the control circuit board 19 is shortened. This can prevent the connection structure between the operation display unit 16 and the control circuit board 19 from becoming larger and more complicated.

[0246] In the embodiment, the rear end portion 19B of the control circuit board 19 is arranged at a position further rearward than the rear end portion 22B of the grip portion 22 .

[0247] In the above-described configuration, the weight balance of the electric power tool 1 in the front-rear direction is optimized.

[0248] In the embodiment, the operation display unit 16 is arranged at a rearward position relative to the control circuit board 19 .

[0249] In the above configuration, the operation display unit 16 and the control circuit board 19 do not overlap each other, so that the size of the battery holding unit 23 can be suppressed and the weight balance of the electric power tool 1 can be optimized.

[0250] In the embodiment, surface 16S of operation display unit 16 is inclined downward toward the rear.

[0251] In the above-described configuration, the operability and visual clarity of the operation display unit 16 are improved.

[0252] In the embodiment, the surface 51S of the circuit board 51 is inclined downward toward the rear.

[0253] In the above configuration, it is possible to suppress an increase in size of the operation display unit 16. In addition, the operability and visual clarity of the operation display unit 16 are improved.

[0254] In the embodiment, the surface 19S of the control circuit board 19 is parallel to the motor rotation axis AX.

[0255] In the above configuration, the circuit board 51 and the control circuit board 19 are arranged to face different directions, so that the size of the electric power tool 1 can be suppressed.

[0256] In an embodiment, the control circuit substrate 19 has: a storage unit 191, which stores multiple action modes of the motor 6; an instruction output unit 192, which outputs a mode instruction for setting the action mode by operating the operation unit 56 of the operation display unit 16; a motor control unit 193, which controls the motor 6 based on the mode instruction; and a display control unit 194, which controls the display unit 57 of the operation display unit 16 based on the mode instruction.

[0257] In the above configuration, the operation mode of the motor 6 is set by operating the operation unit 56 of the operation display unit 16. In addition, the operator can recognize the operation mode of the motor 6 by viewing the display unit 57 by controlling the display unit 57 of the operation display unit 16 based on the mode command.

[0258] In an embodiment, in the front-to-back direction, a first distance G1 between a front end 22A of the lower end of the gripping portion 22 and a front end 23A of the battery retaining portion 23 is set to be shorter than a second distance G2 between a rear end 22B of the lower end of the gripping portion 22 and a rear end 23B of the battery retaining portion 23, or equal to the second distance G2.

[0259] In the above-described configuration, the grip portion 22 is disposed substantially at the center of the battery holding portion 23 in the front-rear direction, so that the weight balance of the electric tool 1 in the front-rear direction is optimized.

[0260] In the embodiment, the electric power tool 1 includes the battery mounting portion 13 disposed at a lower position of the battery holding portion 23 . The battery pack 25 inserted from the front of the battery holding portion 23 is mounted in the battery mounting portion 13 .

[0261] In the above configuration, the operator can easily mount the battery pack 25 in the battery mounting portion 13. In addition, when the battery pack 25 is mounted in the battery mounting portion 13, the weight balance of the electric tool 1 in the front-rear direction is optimized.

[0262] [Second embodiment]

[0263] In the following description, the same reference numerals are given to the same or equivalent components as those in the above-mentioned embodiment, and the description of the components is simplified or omitted.

[0264] Fig.14 1 is a longitudinal sectional view showing the lower part of the electric tool 1 involved in the embodiment. In the embodiment, the resin portion 61 supports the panel 55. The resin portion 61 holds the main body side terminal 13A of the battery mounting portion 13. The resin portion 61 holds the circuit substrate 51. The panel 55 is in contact with the rear portion of the resin portion 61. The panel 55 is fixed to the rear portion of the resin portion 61. The rear portion of the resin portion 61 is configured to be: provided in the recessed portion 23R of the battery holding portion 23.

[0265] The resin portion 61 is fixed to the battery holding portion 23. The resin portion 61 is clamped by the left housing 2L and the right housing 2R. The resin portion 61 is fixed to the left housing 2L and the right housing 2R by means of the screw 2S. The resin portion 61 has a through hole for the screw 2S to pass through. The through hole penetrates the left end face and the right end face of the resin portion 61. The screw 2S passes through the threaded opening provided in the right housing 2R, and then passes through the resin portion 61, and is then inserted into the threaded hole provided in the left housing 2L. The panel 55, the main body side terminal 13A, and the circuit substrate 51 are respectively fixed to the battery holding portion 23 by means of the resin portion 61.

[0266] The control circuit board 19 , the circuit board 51 , the switch element 52 , the light emitting element 53 , and the resin portion 61 are respectively arranged at inner positions of the battery holding portion 23 .

[0267] The control circuit substrate 19 is accommodated in the substrate housing 19C. When the control circuit substrate 19 is accommodated in the substrate housing 19C, it is arranged at the inner side of the battery holding portion 23. The substrate housing 19C is made of synthetic resin. The substrate housing 19C and the resin portion 61 are separate bodies. In addition, the substrate housing 19C and the resin portion 61 can also be integrated.

[0268] As described above, in the embodiment, the electric tool 1 includes: the motor 6; the battery mounting portion 13 including the main body side terminal 13A to which the power from the battery pack 25 is supplied; and the panel 55 which is operated to change the control method of the motor 6. The resin portion 61 supporting the panel 55 holds the main body side terminal 13A.

[0269] In the above configuration, the panel 55 and the body-side terminals 13A of the battery mounting portion 13 are supported by one resin portion 60 . Therefore, the number of components of the electric tool 1 can be reduced, thereby reducing the number of assembling steps of the electric tool 1 .

[0270] In the embodiment, the panel 55 is in contact with the resin portion 61 .

[0271] In the above-described configuration, the panel 55 is directly supported by the resin portion 61 , so the number of components of the electric power tool 1 can be reduced.

[0272] In the embodiment, the panel 55 is fixed to the resin portion 61 .

[0273] In the above-described configuration, relative movement between the panel 55 and the resin portion 61 can be suppressed.

[0274] In the embodiment, the panel 55 faces the circuit board 51. The resin portion 61 holds the circuit board 51.

[0275] In the above-described configuration, the resin portion 61 supports not only the panel 55 and the main body-side terminals 13A but also the circuit board 51 , so the number of components of the electric power tool 1 can be reduced.

[0276] [Third embodiment]

[0277] In the following description, the same reference numerals are given to the same or equivalent components as those in the above-mentioned embodiment, and the description of the components is simplified or omitted.

[0278] Fig.15 1 is a longitudinal sectional view showing the lower part of the electric tool 1 according to the embodiment. As in the above-mentioned embodiment, the panel 55 is arranged at the rear part of the battery holding part 23. The panel 55 is supported by the resin part 61.

[0279] In the embodiment, an elastic body 62 is arranged between the gripping portion 22 and the battery holding portion 23. In the embodiment, the gripping portion 22 is separated from the battery holding portion 23. The gripping portion 22 and the battery holding portion 23 are separate bodies. The gripping portion 22 and the battery holding portion 23 are connected by means of the elastic body 62. As the elastic body 62, rubber is shown as an example. The elastic body 62 is in a ring shape along the lower end of the gripping portion 22. In addition, the elastic body 62 can also be composed of two C-shaped elastic bodies, for example.

[0280] A lamp 63 is disposed in front of the battery holding portion 23. The lamp 63 emits illumination light. The lamp 63 illuminates the anvil 10 and the periphery of the anvil 10 with the illumination light. In addition, the lamp 63 illuminates the tip tool attached to the anvil 10 and the periphery of the tip tool with the illumination light.

[0281] As described above, in the embodiment, the electric tool 1 includes: a motor 6; a motor housing portion 21, which houses the motor 6; a grip portion 22, which extends from the motor housing portion 21; a battery holding portion 23, on which a battery pack 25 for supplying power to the motor 6 is installed; an elastomer 62, which is arranged at a position between the grip portion 22 and the battery holding portion 23; and a panel 55, which is arranged at the rear of the battery holding portion 23 and is operated to change the control method of the motor 6.

[0282] In the above configuration, the elastic body 62 can suppress the vibration of the motor 6 from being transmitted to the battery holding portion 23. Since the vibration of the battery holding portion 23 can be suppressed, the operability and visibility of the panel 55 are improved. In addition, since the vibration of the operation display portion 16 including the panel 55 can be suppressed, the durability of the operation display portion 16 is improved.

[0283] In the embodiment, the electric tool 1 includes the lamp 63 disposed at a front position of the battery holding portion 23 .

[0284] In the above configuration, the anvil 10 and the periphery of the anvil 10 can be illuminated by the lamp 63. Also, the tip tool attached to the anvil 10 and the periphery of the tip tool can be illuminated by the lamp 63.

[0285] Fig.16 It is a diagram showing a modified example of the electric tool 1 according to the third embodiment. Fig.17 1 is an exploded perspective view showing a part of the electric tool 1 according to the third embodiment. Fig.15 In the embodiment shown, the grip 22 is separated from the battery holder 23. The elastic body 62 is arranged between the grip 22 and the battery holder 23. The operation display 16 is arranged behind the battery holder 23. The operation display 16 and the control circuit board 19 are connected by a wire 85.

[0286] like Fig.17 As shown, the holding portion 22 is separated from the battery holding portion 23. The elastic body 62 is arranged at a position between the holding portion 22 and the battery holding portion 23. The elastic body 62 is composed of one annular elastic body. In addition, the elastic body 62 can also be composed of two C-shaped elastic bodies, for example. The operation display unit 16 is arranged at the rear of the battery holding portion 23. The holding portion 22 is a pair of half-split shell structures divided into left and right. The battery holding portion 23 is also a pair of half-split shell structures divided into left and right. The operation display unit 16 is clamped from the left and right by the rear of the battery holding portion 231 on the left and the rear of the battery holding portion 232 on the right.

[0287] Fig.18 It is a cross-sectional view showing a part of a modified example of the electric tool 1 according to the third embodiment. Fig.19 1 is an exploded perspective view showing a part of a modified example of the electric tool 1 according to the third embodiment. Fig.15 as well as Fig.16 Similarly to the embodiment shown, the gripping portion 22 is separated from the battery holding portion 23. The elastic body 62 is arranged at a position between the gripping portion 22 and the battery holding portion 23. The elastic body 62 is composed of one annular elastic body. In addition, the elastic body 62 can also be composed of two C-shaped elastic bodies, for example. The operation display unit 16 is arranged at the rear of the battery holding portion 23. The gripping portion 22 is a pair of half-split shell structures divided into left and right. The battery holding portion 23 is also a pair of half-split shell structures divided into left and right. The operation display unit 16 is clamped from the left and right by the rear of the battery holding portion 231 on the left and the rear of the battery holding portion 232 on the right.

[0288] [Fourth embodiment]

[0289] In the following description, the same reference numerals are given to the same or equivalent components as those in the above-mentioned embodiment, and the description of the components is simplified or omitted.

[0290] Fig. 20 2 is a longitudinal sectional view showing the lower portion of the electric tool 1 according to the embodiment. Fig. 20 As shown, the lower end of the panel 55 (operation display unit 16) may be arranged below the main body terminal 13A. Since the panel 55 is enlarged, the display items on the panel 55 can be enlarged, thereby improving visual clarity.

[0291] [Fifth embodiment]

[0292] In the following description, the same reference numerals are given to the same or equivalent components as those in the above-mentioned embodiment, and the description of the components is simplified or omitted.

[0293] Fig.21 2 is a longitudinal sectional view showing the electric tool 1 according to the embodiment. Fig.21As shown in FIG. 1 , a control circuit board 190 for controlling the motor 6 is accommodated in the grip portion 22. The operation display portion 16 including the panel 55 operated to change the control method of the motor 6 is arranged at the rear of the battery holding portion 23. The control circuit board 190 and the operation display portion 16 are connected via a wire 81. The control circuit board 190 and the main body side terminal 13A are connected via a wire 82. The control circuit board 190 and the switch circuit connected to the trigger shifter 14 are connected via a wire 83.

[0294] The control circuit 190A of the control circuit substrate 190 includes: a microcomputer 190B, a gate drive circuit 190C, an inverter circuit 190D, and a capacitor 190E. The microcomputer 190B includes: a processor such as a CPU (Central Processing Unit), a non-volatile memory such as a ROM (Read Only Memory), and a volatile memory such as a RAM (Random Access Memory). The inverter circuit 190D supplies a drive current to the coil 31 of the motor 6 based on the power supplied from the battery pack 25. The inverter circuit 190D has 6 switching elements. The switching element includes: a field effect transistor (FET: Field Effect Transistor). In addition, the switching element can be an IGBT or a MOSFET. The gate drive circuit 190C is a drive circuit that drives the switch element of the inverter circuit 190D. The microcomputer 190B outputs a control signal to the gate drive circuit 190C to drive the switch element of the inverter circuit 190D. The capacitor 190E is provided to reduce noise generated when the switching element performs switching.

[0295] The surface of the control circuit board 190 is perpendicular to the motor rotation axis AX. The surface 16S of the operation display unit 16 is inclined downward toward the rear.

[0296] As described above, in an embodiment, the electric tool 1 comprises: a motor 6 having a rotor 27 that rotates around a motor rotation axis AX extending in the front-to-rear direction; an anvil 10 as an output portion, which is arranged at a position closer to the front than the motor 6 and rotates based on the rotational force of the rotor 27; a housing 2, which has a motor housing portion 21 for housing the motor 6, a grip portion 22 extending downward from the motor housing portion 21, and a battery holding portion 23 connected to the lower end portion of the grip portion 22; a control circuit substrate 190, which is housed in the grip portion 22 and controls the motor 6; and an operation display portion 16, which is arranged at the rear of the battery holding portion 23 and includes a panel 55 that is operated to change the control method of the motor 6.

[0297] In the above configuration, the control circuit board 190 is housed in the grip portion 22 , so that the size of the electric power tool 1 can be suppressed. In particular, the size of the battery holding portion 23 can be suppressed.

[0298] In the embodiment, the surface of the control circuit board 190 is perpendicular to the motor rotation axis AX.

[0299] In the above configuration, the size of the electric tool 1 can be suppressed. The control circuit board 190 is long in the vertical direction. The grip 22 is also long in the vertical direction. By accommodating the control circuit board 190 along the grip 22, the size of the electric tool 1 can be suppressed.

[0300] Fig. 22 1 is a perspective view showing a modified example of the control circuit substrate 190 and the trigger shifter 14 according to the fifth embodiment. Fig. 22 As shown, the control circuit substrate 190 and the switch circuit connected to the trigger shifter 14 can also be integrated. Fig. 22 In the example shown, the control circuit board 190 includes a microcomputer 190B, an inverter circuit 190D including six switching elements, and a capacitor 190E. In addition, the control circuit board 190 includes a motor terminal 190F connected to the motor 6 and a main body side terminal 190G connected to the battery pack 25. The main body side terminal 190G has the same function as the main body side terminal 13A described in the above embodiment. The operation display unit 16 and the microcomputer 190B are connected via a wire 86.

[0301] [Sixth embodiment]

[0302] In the following description, the same reference numerals are given to the same or equivalent components as those in the above-mentioned embodiment, and the description of the components is simplified or omitted.

[0303] Fig.23 It is a perspective view showing the lower portion of the electric tool 1 according to the embodiment when viewed from the rear. Fig.24 2 is a longitudinal sectional view showing an electric tool according to an embodiment of the present invention. Fig.23 As shown, an air inlet 65 may be provided on the panel 55. The fan 12 rotates so that the air around the battery holding portion 23 flows into the internal space of the battery holding portion 23 through the air inlet 65. Fig.24As shown by the arrow FL, the air flowing into the internal space of the battery holding portion 23 cools the circuit board 51 and the control circuit board 19. The air that has cooled the circuit board 51 and the control circuit board 19 circulates in the internal space of the gripping portion 22, cools the motor 6, and is then discharged from the exhaust port 20B provided in the rear cover 3.

[0304] [Seventh embodiment]

[0305] In the following description, the same reference numerals are given to the same or equivalent components as those in the above-mentioned embodiment, and the description of the components is simplified or omitted.

[0306] Fig.25 2 is a rear view showing the electric tool 1 according to the embodiment. Fig.25 As shown, the housing 2 may be composed of an upper housing 2U and a lower housing 2B. The operation display unit 16 including the panel 55 may be sandwiched between the upper housing 2U and the lower housing 2B.

[0307] [Eighth embodiment]

[0308] In the following description, the same reference numerals are given to the same or equivalent components as those in the above-mentioned embodiment, and the description of the components is simplified or omitted.

[0309] Fig.26 It is an exploded perspective view showing the electric tool according to the embodiment when viewed from the front. Fig. 27 It is a longitudinal sectional view showing the lower part of the electric tool 1 according to the embodiment. Fig.28 1 is a perspective view showing a control circuit substrate 19 according to an embodiment. Fig.26 As shown, the housing 2 includes: a front housing 2F and a rear housing 2G. That is, in the embodiment, the housing 2 includes: a pair of half-split housings divided into front and back. The housing 2 is formed by connecting the front housing 2F and the rear housing 2G. The operation display unit 16 is arranged at the rear of the battery holding unit 23 of the rear housing 2G.

[0310] A battery connector 195 is provided for electrically coupling the battery pack 25 with the control circuit substrate 19. The control circuit substrate 19 is integrally mounted on the battery connector 195. Side plates 196 are erected around the battery connector 195, and the battery connector 195 is in the form of a low shell in order to integrally mount the control circuit substrate 19 on its upper portion. After the required wiring connection is made between the control circuit installed on the control circuit substrate 19 and the battery connector 195, the control circuit substrate 19 is inserted into the shelled battery connector 195 in a manner to form a required assembly structure, and a casting material (not shown) is dripped downward into the shelled battery connector 195 by a casting process and solidified, thereby making the control circuit substrate 19 integrated with the battery connector 195 in the required assembly structure. In addition, the control circuit substrate 19 has a battery terminal 197 connected to the battery pack 25.

[0311] like Fig. 27 As shown, the operation display unit 16 may include a hook 66 hooked on the inner wall of the battery holding unit 23. A snap-fit ​​fitting is exemplified as the hook 66. The operation display unit 16 may be inserted into the recess 23R of the battery holding unit 23. The operation display unit 16 is connected to the control circuit substrate 19 via a wire 84. In the embodiment, the wire 84 is connected to the control circuit substrate 19 via a connector.

[0312] [Ninth embodiment]

[0313] In the following description, the same reference numerals are given to the same or equivalent components as those in the above-mentioned embodiment, and the description of the components is simplified or omitted.

[0314] Fig.29 1 is a perspective view showing the lower part of the electric tool 1 according to the embodiment as viewed from the rear. In the above embodiment, the operation display unit 16 includes an operation unit 56 pressed by the operator. Fig.29 As shown, the operation display unit may include a dial 67. The dial 67 is arranged at the rear of the battery holding unit 23. The dial 67 rotates around a rotation axis extending in the up-down direction. The control method of the motor 6 can be changed by rotating the dial 67. The operator can intuitively change the control method of the motor 6.

[0315] [10th embodiment]

[0316] In the following description, the same reference numerals are given to the same or equivalent components as those in the above-mentioned embodiment, and the description of the components is simplified or omitted.

[0317] Fig.30 1 is a perspective view showing the lower portion of the electric tool 1 according to the embodiment as viewed from the rear. Fig.30 As shown, the operation display unit may include a shift lever 68 that can be moved in the left-right direction. The shift lever 68 is arranged at the rear of the battery holding unit 23. The control method of the motor 6 can be changed by moving the shift lever 68. The operator can intuitively change the control method of the motor 6.

[0318] [11th embodiment]

[0319] In the following description, the same reference numerals are given to the same or equivalent components as those in the above-mentioned embodiment, and the description of the components is simplified or omitted.

[0320] Fig.31 1 is a perspective view showing the lower portion of the electric tool 1 according to the embodiment as viewed from the rear. Fig.31 As shown, the operation display unit may include a touch panel 69. The touch panel 69 includes: a display and a touch sensor configured on the display. The touch panel 69 is configured at the rear of the battery holding unit 23. The operation mode of the motor 6 is displayed on the display. The control method of the motor 6 can be changed by operating the touch panel 69.

[0321] [12th embodiment]

[0322] In the following description, the same reference numerals are given to the same or equivalent components as those in the above-mentioned embodiment, and the description of the components is simplified or omitted.

[0323] Fig.32 1 is a perspective view showing the lower portion of the electric tool 1 according to the embodiment as viewed from the rear. Fig.32 As shown, the operation display unit may include a microphone 70 . The control circuit board 19 may change the control method of the motor 6 based on the sound input to the microphone 70 .

[0324] [13th embodiment]

[0325] In the following description, the same reference numerals are given to the same or equivalent components as those in the above-mentioned embodiment, and the description of the components is simplified or omitted.

[0326] Fig.33 It is a rear view showing the electric tool 1 according to the embodiment. Fig.341 is a block diagram showing the electric tool 1 involved in the embodiment. The operation display unit 16 can be provided in the battery pack 25. The operation display unit 16 can be provided at the rear of the battery pack 25. The battery pack 25 communicates with the control circuit substrate 19 via the main body side terminal 13A. An operation signal is generated by operating the operation display unit 16, and the operation signal is sent to the control circuit substrate 19 via the main body side terminal 13A. The control circuit substrate 19 can change the control method of the motor 6 based on the operation signal from the battery pack 25. The control circuit substrate 19 can send a control signal for causing the light emitting element 53 of the operation display unit 16 to emit light to the battery pack 25 via the main body side terminal 13A.

[0327] [14th embodiment]

[0328] In the following description, the same reference numerals are given to the same or equivalent components as those in the above-mentioned embodiment, and the description of the components is simplified or omitted.

[0329] Fig.35 1 is a right side view of the electric tool 1 according to the embodiment. In the embodiment, a button battery is mounted on the grip 22. Even if the battery pack 25 is removed from the battery mounting portion 13, the control circuit board 19 can continue to operate by the power supplied from the button battery. The grip 22 is provided with a cover 71 for covering the button battery. The operation display unit 16 can be arranged on the cover 71.

[0330] [15th embodiment]

[0331] In the following description, the same reference numerals are given to the same or equivalent components as those in the above-mentioned embodiment, and the description of the components is simplified or omitted.

[0332] Fig.36 : is a diagram schematically showing a control circuit substrate 72 and a panel 55 involved in an embodiment. The control circuit substrate 72 has: a motor control circuit 19A for controlling the motor 6. In the embodiment, the light emitting element 53 is mounted on the control circuit substrate 72. The circuit substrate 51 described in the above embodiment is omitted. The light emitting element 53 is arranged at a rear position of the motor control circuit 19A. The light emitted from the light emitting element 53 is supplied to the display portion 57 of the panel 55 via the light guiding component 73. According to the embodiment, since the circuit substrate 51 is omitted, the number of components of the electric tool 1 can be reduced, thereby suppressing the enlargement of the electric tool 1.

[0333] [16th embodiment]

[0334] In the following description, the same reference numerals are given to the same or equivalent components as those in the above-mentioned embodiment, and the description of the components is simplified or omitted.

[0335] Fig.37 1 is a rear view showing the electric tool 1 according to the embodiment. In the above embodiment, the panel 55 has an operation unit 56 and a display unit 57. The display unit 57 is provided on the panel 55, and the operation unit 56 can be arranged at a position higher than the panel 55. Fig.37 In the example shown, the operation portion 56 is arranged on the grip portion 22. The first operation portion 56A is arranged on the left portion of the grip portion 22, and the second operation portion 56B is arranged on the right portion of the grip portion 22. In addition, the operation portion 56 may be arranged on the rear portion of the grip portion 22. The operation portion 56 may also be arranged on the motor housing portion 21.

[0336] [Seventeenth embodiment]

[0337] In the following description, the same reference numerals are given to the same or equivalent components as those in the above-mentioned embodiment, and the description of the components is simplified or omitted.

[0338] Fig.38 1 is a three-dimensional view showing the electric tool 1E involved in the embodiment as viewed from the rear. The electric tool 1E includes: a motor housing portion 121 for housing a motor, a grip portion 122, and a battery holding portion 123 for mounting a battery pack 25. The output portion 110 is rotated by the rotational force generated by the motor. The grip portion 122 includes: a first portion 122A extending backward from the upper portion of the motor housing portion 121, a second portion 122B extending backward and downward from the lower portion of the motor housing portion 121, and a third portion 122C extending downward from the rear end portion of the first portion 122A. The lower end portion of the second portion 122B is connected to the front portion of the battery holding portion 123. The lower end portion of the third portion 122C is connected to the rear portion of the battery holding portion 123. The grip portion 122 constitutes a so-called ring handle (D-shaped handle).

[0339] The operation display unit 16 is disposed at the rear portion of the battery holding unit 123. Since the operation display unit 16 is disposed at the rear portion of the battery holding unit 123, the operability and visibility of the operation display unit 16 are improved.

[0340] Fig.391 is a perspective view showing the electric tool 1K involved in the embodiment as viewed from the rear. The electric tool 1K is a gun-shaped screwdriver. The electric tool 1K has: a motor housing portion 621 for housing a motor, a grip portion 622, and a battery holding portion 623 for mounting a battery pack 25. The output portion 610 is rotated by the rotational force generated by the motor. The grip portion 622 extends downward from the lower portion of the rear portion of the motor housing portion 621. The lower end portion of the grip portion 622 is connected to the front portion of the battery holding portion 623.

[0341] The operation display unit 16 is disposed at the rear of the battery holding unit 623. Since the operation display unit 16 is disposed at the rear of the battery holding unit 623, the operability and visibility of the operation display unit 16 are improved.

[0342] [Eighteenth embodiment]

[0343] In the following description, the same reference numerals are given to the same or equivalent components as those in the above-mentioned embodiment, and the description of the components is simplified or omitted.

[0344] Fig.40 1 is a three-dimensional view showing the electric tool 1F involved in the embodiment as viewed from the front. The electric tool 1F is an angle tool. The electric tool 1F has: a motor housing portion 221 for housing a motor 206 and a reduction mechanism 74, a grip portion 222, and a battery retaining portion 223 for mounting a battery pack 25. The grip portion 222 is connected to the rear of the motor housing portion 221. The battery retaining portion 223 is connected to the rear of the grip portion 222. A trigger shifter 214 is arranged at the lower portion of the grip portion 222. The motor rotation axis AX of the motor 206 extends in the front-to-back direction. The output portion 210 is rotated by the rotational force generated by the motor 206. The rotation axis BX of the output portion 210 extends in the up-down direction.

[0345] The operation display unit 16 is disposed on the upper portion of the battery holding unit 223. Since the operation display unit 16 is disposed on the upper portion of the battery holding unit 223, the operability and visibility of the operation display unit 16 are improved.

[0346] [19th embodiment]

[0347] In the following description, the same reference numerals are given to the same or equivalent components as those in the above-mentioned embodiment, and the description of the components is simplified or omitted.

[0348] Fig.411 is a side view schematically showing an electric tool 1G involved in an embodiment. The electric tool 1G is an impact wrench. The electric tool 1G has: a motor housing portion 321 for housing a motor, a grip portion 322 extending downward from the motor housing portion 321, a battery holding portion 323 connected to the lower end of the grip portion 322, and an anvil 310 arranged at a position closer to the front than the motor housing portion 321. The anvil 310 is a long anvil. The battery pack 25 is installed on the battery holding portion 323. A portion of the battery holding portion 323 is arranged at a rear position of the battery pack 25. The operation display portion 16 is arranged at the rear of the battery holding portion 323. According to the embodiment, the operation display portion 16 can be enlarged, so the operability and visual visibility of the operation display portion 16 are improved.

[0349] [Implementation Example 20]

[0350] In the following description, the same reference numerals are given to the same or equivalent components as those in the above-mentioned embodiment, and the description of the components is simplified or omitted.

[0351] Fig.42 1 is a diagram schematically showing a portion of the electric tool 1H according to the embodiment. In the embodiment, the battery pack 425 is in the shape of a rod that is long in the vertical direction. The battery pack 425 is inserted into the inside of the grip 422 from an opening provided at the lower part of the grip 422. The inside of the grip 422 is provided with a main body side terminal 413 connected to the battery pack 425.

[0352] The operation display unit 16 is arranged at the rear portion of the grip portion 422. In the up-down direction, the operation display unit 16 and at least a part of the battery pack 425 are arranged at the same position.

[0353] [Implementation Example 21]

[0354] In the following description, the same reference numerals are given to the same or equivalent components as those in the above-mentioned embodiment, and the description of the components is simplified or omitted.

[0355] Fig.43 It is a perspective view showing a part of the electric tool 1J according to the embodiment when viewed from the rear. Fig.44 1 is a longitudinal sectional view showing a part of the electric tool 1J according to the embodiment. Fig.43 as well as Fig.44As shown, the electric tool 1J includes: a motor 6 having a rotor 27 that rotates around a motor rotation axis AX extending in the front-rear direction; a speed reduction mechanism 7 that reduces the speed of rotation from the motor 6; an anvil 510 as an output portion that is driven by the output from the speed reduction mechanism 7; and a housing 502 having a motor housing portion 521 that houses the motor 6, a grip portion 522 that extends downward from the motor housing portion 521, a support portion 524 in front of the grip portion 522, and a battery holding portion 523 that is disposed below the grip portion 522 and the support portion 524 and is connected to a battery pack 525 by sliding. A rail portion for sliding the battery pack 525 is provided at the lower end of the battery holding portion 523.

[0356] In addition, the electric tool 1J includes: a control circuit substrate 19, which is housed in the housing 502 and controls the motor 6; and an operation display unit 16, which is arranged at the rear of the battery retaining unit 523 from the lower part of the gripping unit 522 and includes a panel 55 that is operated to change the control method of the motor 6.

[0357] The control circuit board 19 is arranged at any position in the internal space of the housing 502. The control circuit board 19 can be accommodated in the internal space of the motor accommodating portion 521, the internal space of the gripping portion 522, the internal space of the battery holding portion 523, or the internal space of the supporting portion 524.

[0358] Fig.45 This is a diagram showing the control circuit board 19 disposed in the internal space of the motor housing portion 521 according to the embodiment. Fig.46 This is a diagram showing the control circuit board 19 disposed in the internal space of the gripping portion 522 according to the embodiment. Fig.47 It is a diagram showing the control circuit board 19 arranged in the internal space of the battery holding portion 523 according to the embodiment. Fig.48 This is a diagram showing the control circuit board 19 disposed in the internal space of the support portion 524 according to the embodiment.

[0359] In the embodiment, the anvil 510 is in the shape of a quadrangular prism for assembling the socket. The electric tool 1J is an impact wrench.

[0360] [Modifications]

[0361] In the above embodiment, the panel 55 may be made of metal. When the panel 55 is made of metal, even if an impact is applied to the panel 55 when the electric power tool 1 is dropped, for example, the panel 55 can be prevented from being damaged.

[0362] In the above embodiment, the anvil 10 has a hexagonal tool hole 10A for holding the front end tool. The anvil 10 may also be in the shape of a quadrangular prism for assembling a socket. The electric tool may also be an impact wrench.

[0363] In the above embodiment, the electric tool 1 may also be at least one of an impact driver, a hammer, a hammer drill, a driver drill, an angle drill, a grinder, a circular saw, and a reciprocating saw.

[0364] In the above-described embodiment, the power source of the electric tool 1 may not be the battery pack 25 but may be a commercial power source (AC power source).

[0365] The present invention includes the following other aspects.

[0366] A1. An electric tool, wherein:

[0367] The electric tool comprises: a motor; a battery mounting portion including a main body side terminal to which power from a battery is supplied; and a panel which is operated to change a control method of the motor.

[0368] The resin portion supporting the panel includes the main body-side terminal.

[0369] A2. The electric tool according to claim A1, wherein:

[0370] The panel is in contact with the resin portion.

[0371] A3. The electric tool according to claim A1, wherein:

[0372] The panel is fixed to the resin portion.

[0373] A4. The electric tool according to claim A1, wherein:

[0374] The panel is opposite to the circuit substrate.

[0375] The resin portion holds the circuit substrate.

[0376] A5. The electric tool according to claim A4, wherein:

[0377] The panel has an elastic deformation portion,

[0378] The circuit substrate supports a switch element, and the switch element is operated by pressing the elastic deformation portion.

[0379] A6. The electric tool according to claim A4, wherein:

[0380] The panel has a light-transmitting portion,

[0381] The circuit board supports a light emitting element that radiates light toward the light transmitting portion.

[0382] A7. The electric tool according to claim A1, wherein:

[0383] The electric tool comprises: a control circuit board for controlling the motor, and a housing for housing the control circuit board.

[0384] The housing includes a left housing and a right housing fixed to the left housing by screws.

[0385] The screw passes through the resin portion.

[0386] A8. The electric tool according to claim A7, wherein:

[0387] The housing includes: a motor housing portion for housing the motor; a grip portion extending downward from the motor housing portion; and a battery holding portion connected to a lower end portion of the grip portion.

[0388] The battery mounting portion is arranged at a lower portion of the battery holding portion,

[0389] The panel is arranged on the battery holding portion.

[0390] A9. The electric tool according to claim A8, wherein:

[0391] The electric tool comprises: a trigger lever provided at the front of the grip portion and operated to start the motor;

[0392] The panel is arranged at the rear of the battery holding portion.

[0393] A10. The electric tool according to claim A9, wherein:

[0394] The panel is arranged in a recessed portion provided in the battery holding portion.

[0395] A11. The electric tool according to claim A9, wherein:

[0396] The center of the panel coincides with the center of the battery holding portion in the left-right direction.

[0397] A12. The electric tool according to claim A8, wherein:

[0398] The panel is arranged at a position rearward of a rear end portion of the grip portion.

[0399] A13. An electric tool according to scheme A8, wherein:

[0400] The panel is arranged at a position further rearward than a rear end portion of the motor housing portion.

[0401] A14. An electric tool according to scheme A8, wherein:

[0402] The control circuit board is accommodated in the battery holding portion.

[0403] A15. The electric tool according to scheme A14, wherein:

[0404] The rear end portion of the control circuit substrate is arranged at a rearward position relative to the rear end portion of the grip portion.

[0405] A16. An electric tool according to scheme A14, wherein:

[0406] The panel is arranged at a rearward position relative to the control circuit substrate.

[0407] A17. The electric tool according to claim A1, wherein:

[0408] The surface of the panel is inclined downward toward the rear.

[0409] A18. The electric tool according to claim A1, wherein:

[0410] A dimension of the panel in a left-right direction is greater than a dimension of the panel in a top-bottom direction.

[0411] A19. An electric tool according to scheme A4, wherein:

[0412] The surface of the circuit substrate is inclined downward toward the rear.

[0413] A20. An electric tool according to scheme A14, wherein:

[0414] The surface of the control circuit substrate is parallel to the motor rotation axis.

[0415] B1. An electric tool, characterized in that:

[0416] The electric tool comprises: a motor; a control circuit board for controlling the motor; and a panel for changing a control method of the motor.

[0417] The resin portion supporting the panel includes the control circuit substrate.

[0418] B2. The electric tool according to scheme B1, wherein:

[0419] The panel is in contact with the resin portion.

[0420] B3. The electric tool according to scheme B1, wherein:

[0421] The panel is fixed to the resin portion.

[0422] B4. The electric tool according to scheme B1, wherein:

[0423] The panel is opposite to the circuit substrate.

[0424] The resin portion holds the circuit substrate.

[0425] B5. The electric tool according to scheme B4, wherein:

[0426] The panel has an elastic deformation portion,

[0427] The circuit substrate supports a switch element, and the switch element is operated by pressing the elastic deformation portion.

[0428] B6. An electric tool according to scheme B4, wherein:

[0429] The panel has a light-transmitting portion,

[0430] The circuit board supports a light emitting element that radiates light toward the light transmitting portion.

[0431] B7. An electric tool according to scheme B1, wherein:

[0432] The electric tool comprises: a housing for housing the control circuit substrate;

[0433] The housing includes a left housing and a right housing fixed to the left housing by screws.

[0434] B8. An electric tool according to scheme B7, wherein:

[0435] The housing comprises: a motor housing portion for housing the motor; a grip portion extending downward from the motor housing portion; and a battery holding portion connected to a lower end of the grip portion and for mounting a battery for supplying power to the motor.

[0436] The panel is arranged on the battery holding portion.

[0437] B9. An electric tool according to scheme B8, wherein:

[0438] The electric tool comprises: a trigger lever provided at the front of the grip portion and operated to start the motor;

[0439] The panel is arranged at the rear of the battery holding portion.

[0440] B10. The electric tool according to scheme B9, wherein:

[0441] The panel is arranged in a recessed portion provided in the battery holding portion.

[0442] B11. An electric tool according to scheme B9, wherein:

[0443] The center of the panel coincides with the center of the battery holding portion in the left-right direction.

[0444] B12. An electric tool according to scheme B8, wherein

[0445] The panel is arranged at a position rearward of a rear end portion of the grip portion.

[0446] B13. An electric tool according to scheme B8, wherein

[0447] The panel is arranged at a position further rearward than a rear end portion of the motor housing portion.

[0448] B14. An electric tool according to scheme B8, wherein

[0449] The control circuit board is accommodated in the battery holding portion.

[0450] B15. An electric tool according to scheme B14, wherein:

[0451] The rear end portion of the control circuit substrate is arranged at a rearward position relative to the rear end portion of the grip portion.

[0452] B16. An electric tool according to scheme B14, wherein:

[0453] The panel is arranged at a rearward position relative to the control circuit substrate.

[0454] B17. The electric tool according to scheme B1, wherein:

[0455] The surface of the panel is inclined downward toward the rear.

[0456] B18. The electric tool according to scheme B1, wherein:

[0457] A dimension of the panel in a left-right direction is greater than a dimension of the panel in a top-bottom direction.

[0458] B19. An electric tool according to scheme B4, wherein:

[0459] The surface of the circuit substrate is inclined downward toward the rear.

[0460] B20. An electric tool according to scheme B14, wherein

[0461] The surface of the control circuit substrate is parallel to the motor rotation axis.

[0462] C1. An electric tool, characterized in that:

[0463] The electric tool has:

[0464] a motor having a rotor that rotates around a motor rotation axis extending in the front-rear direction;

[0465] an output unit that is disposed further forward than the motor and rotates based on a rotational force of the rotor;

[0466] a housing having a motor housing portion for housing the motor, a grip portion extending downward from the motor housing portion, and a battery holding portion connected to a lower end of the grip portion;

[0467] a control circuit substrate, which is accommodated in the grip portion and controls the motor; and

[0468] A panel is arranged at the rear of the battery holding portion and is operated to change a control method of the motor.

[0469] C2. The electric tool according to scheme C1, wherein:

[0470] The electric power tool includes a resin portion that supports the panel.

[0471] C3. An electric tool according to scheme C2, wherein:

[0472] The panel is in contact with the resin portion.

[0473] C4. An electric tool according to scheme C2, wherein:

[0474] The panel is fixed to the resin portion.

[0475] C5. An electric tool according to scheme C2, wherein:

[0476] The panel is opposite to the circuit substrate.

[0477] The resin portion holds the circuit substrate.

[0478] C6. An electric tool according to scheme C5, wherein

[0479] The panel has an elastic deformation portion,

[0480] The circuit substrate supports a switch element, and the switch element is operated by pressing the elastic deformation portion.

[0481] C7. An electric tool according to scheme C5, wherein

[0482] The panel has a light-transmitting portion,

[0483] The circuit board supports a light emitting element that radiates light toward the light transmitting portion.

[0484] C8. An electric tool according to scheme C1, wherein

[0485] The housing includes a left housing and a right housing fixed to the left housing by screws.

[0486] C9. An electric tool according to scheme C1, wherein

[0487] The electric power tool comprises: a battery mounting portion including a main body side terminal to which electric power from a battery is supplied;

[0488] The battery mounting portion is disposed at a lower portion of the battery holding portion.

[0489] C10. The electric tool according to scheme C1, wherein:

[0490] The electric tool includes a trigger paddle that is provided at the front portion of the grip portion and is operated to start the motor.

[0491] C11. The electric tool according to scheme C1, wherein:

[0492] The panel is arranged in a recessed portion provided in the battery holding portion.

[0493] C12. The electric tool according to scheme C1, wherein:

[0494] The center of the panel coincides with the center of the battery holding portion in the left-right direction.

[0495] C13. An electric tool according to scheme C1, wherein

[0496] The panel is arranged at a position rearward of a rear end portion of the grip portion.

[0497] C14. An electric tool according to scheme C1, wherein

[0498] The panel is arranged at a position further rearward than a rear end portion of the motor housing portion.

[0499] C15. An electric tool according to scheme C14, wherein:

[0500] The rear end portion of the control circuit substrate is disposed further forward than the front end portion of the grip portion.

[0501] C16. An electric tool according to scheme C1, wherein

[0502] The panel is arranged at a rearward position relative to the control circuit substrate.

[0503] C17. An electric tool according to scheme C1, wherein

[0504] The surface of the panel is inclined downward toward the rear.

[0505] C18. An electric tool according to scheme C1, wherein

[0506] A dimension of the panel in a left-right direction is greater than a dimension of the panel in a top-bottom direction.

[0507] C19. An electric tool, characterized in that

[0508] The electric tool has:

[0509] a motor having a rotor that rotates around a motor rotation axis extending in the front-rear direction;

[0510] a speed reduction mechanism that reduces the speed of rotation from the motor;

[0511] an output portion driven by the output from the speed reduction mechanism;

[0512] a housing having a motor housing portion for housing the motor, a grip portion extending downward from the motor housing portion, a support portion in front of the grip portion, and a battery holding portion disposed below the support portion and to which a battery pack is slidably connected;

[0513] a control circuit substrate, which is accommodated in the housing and controls the motor; and

[0514] A panel is disposed on at least one of a lower portion of the grip portion and a rear portion of the battery holding portion and is operated to change a control method of the motor.

[0515] C20. An electric tool according to scheme C19, wherein

[0516] The control circuit substrate is accommodated in: the gripping portion, the supporting portion, or the battery holding portion.

[0517] D1. An electric tool, characterized in that:

[0518] The electric tool has:

[0519] motor;

[0520] a motor housing portion for housing the motor;

[0521] a grip portion extending from the motor housing portion;

[0522] A battery holding portion for mounting a battery for powering the motor;

[0523] an elastic body disposed between the grip portion and the battery holding portion; and

[0524] A panel is arranged at the rear of the battery holding portion and is operated to change a control method of the motor.

[0525] D2. The electric tool according to claim D1, wherein:

[0526] The electric power tool includes a lamp disposed at a front position of the battery holding portion.

[0527] D3. An electric tool according to scheme D1, wherein:

[0528] The electric power tool includes a resin portion that supports the panel.

[0529] D4. An electric tool according to scheme D3, wherein:

[0530] The panel is in contact with the resin portion.

[0531] D5. An electric tool according to scheme D3, wherein:

[0532] The panel is fixed to the resin portion.

[0533] D6. An electric tool according to scheme D3, wherein:

[0534] The panel is opposite to the circuit substrate.

[0535] The resin portion holds the circuit substrate.

[0536] D7. An electric tool according to scheme D6, wherein:

[0537] The panel has an elastic deformation portion,

[0538] The circuit substrate supports a switch element, and the switch element is operated by pressing the elastic deformation portion.

[0539] D8. An electric tool according to scheme D6, wherein

[0540] The panel has a light-transmitting portion,

[0541] The circuit board supports a light emitting element that radiates light toward the light transmitting portion.

[0542] D9. An electric tool according to scheme D1, wherein:

[0543] The electric power tool comprises: a battery mounting portion including a main body side terminal to which electric power from a battery is supplied;

[0544] The battery mounting portion is arranged on the battery holding portion.

[0545] D10. The electric tool according to scheme D1, wherein:

[0546] The electric tool includes a trigger paddle that is provided at the front portion of the grip portion and is operated to start the motor.

[0547] D11. The electric tool according to claim D1, wherein:

[0548] The panel is arranged in a recessed portion provided in the battery holding portion.

[0549] D12. The electric tool according to claim D1, wherein:

[0550] The center of the panel coincides with the center of the battery holding portion in the left-right direction.

[0551] D13. The electric tool according to claim D1, wherein:

[0552] The panel is arranged at a position rearward of a rear end portion of the grip portion.

[0553] D14. The electric tool according to claim D1, wherein:

[0554] The panel is arranged at a position further rearward than a rear end portion of the motor housing portion.

[0555] D15. The electric tool according to claim D1, wherein:

[0556] The electric tool comprises: a control circuit substrate for controlling the motor;

[0557] The control circuit board is accommodated in the battery holding portion.

[0558] D16. The electric tool according to claim D1, wherein:

[0559] The rear end portion of the control circuit substrate is arranged at a rearward position relative to the rear end portion of the grip portion.

[0560] D17. An electric tool according to scheme D16, wherein

[0561] The panel is arranged at a rearward position relative to the control circuit substrate.

[0562] D18. The electric tool according to claim D1, wherein:

[0563] The surface of the panel is inclined downward toward the rear.

[0564] D19. An electric tool according to scheme D1, wherein

[0565] A dimension of the panel in a left-right direction is greater than a dimension of the panel in a top-bottom direction.

[0566] D20. An electric tool according to scheme D6, wherein

[0567] The surface of the circuit substrate is inclined downward toward the rear.

Claims

1. An electric tool, characterized in that: The electric tool comprises: a motor; a battery mounting portion including a main body side terminal to which power from a battery is supplied; and a panel which is operated to change a control method of the motor. The resin portion supporting the panel includes the main body-side terminal.

2. An electric tool, characterized in that: The electric tool comprises: a motor; a control circuit board for controlling the motor; and a panel for changing a control method of the motor. The resin portion supporting the panel includes the control circuit substrate.

3. The electric tool according to claim 2, characterized in that: The electric tool comprises: a housing for housing the control circuit substrate; The housing includes a left housing and a right housing fixed to the left housing by screws.

4. The electric tool according to claim 3, characterized in that: The housing has: a motor housing portion for housing the motor; and a grip portion extending downward from the motor housing portion. and a battery holding portion connected to the lower end of the grip portion and for mounting a battery for supplying power to the motor. The panel is arranged on the battery holding portion.

5. An electric tool, characterized in that: The electric tool has: a motor having a rotor that rotates around a motor rotation axis extending in the front-rear direction; an output unit that is disposed further forward than the motor and rotates based on a rotational force of the rotor; a housing having a motor housing portion for housing the motor, a grip portion extending downward from the motor housing portion, and a battery holding portion connected to a lower end of the grip portion; a control circuit substrate, which is accommodated in the holding portion and controls the motor; as well as A panel is arranged at the rear of the battery holding portion and is operated to change a control method of the motor.

6. The electric tool according to claim 5, characterized in that: The electric power tool includes a resin portion that supports the panel.

7. An electric tool, characterized in that: The electric tool has: a motor having a rotor that rotates around a motor rotation axis extending in the front-rear direction; a speed reduction mechanism that reduces the speed of rotation from the motor; an output portion driven by the output from the speed reduction mechanism; a housing having a motor housing portion for housing the motor, a grip portion extending downward from the motor housing portion, a support portion in front of the grip portion, and a battery holding portion disposed below the support portion and to which a battery pack is slidably connected; a control circuit substrate, which is accommodated in the housing and controls the motor; as well as A panel is disposed on at least one of a lower portion of the grip portion and a rear portion of the battery holding portion and is operated to change a control method of the motor.

8. The electric tool according to claim 7, characterized in that: The control circuit substrate is accommodated in: the gripping portion, the supporting portion, or the battery holding portion.

9. An electric tool, characterized in that: The electric tool has: motor; a motor housing portion for housing the motor; a grip portion extending from the motor housing portion; A battery holding portion for mounting a battery for powering the motor; an elastic body disposed between the gripping portion and the battery holding portion; as well as A panel is arranged at the rear of the battery holding portion and is operated to change a control method of the motor.

10. The electric tool according to claim 9, characterized in that: The electric power tool includes a lamp disposed at a front position of the battery holding portion.

11. The electric tool according to claim 9, characterized in that: The electric power tool includes a resin portion that supports the panel.

12. The electric tool according to any one of claims 1, 2, 6 and 11, characterized in that: The panel is in contact with the resin portion.

13. The electric tool according to claim 12, characterized in that: The panel is fixed to the resin portion.

14. The electric tool according to any one of claims 1, 2, 6 and 11, characterized in that: The panel is opposite to the circuit substrate. The resin portion holds the circuit substrate.

15. The electric tool according to claim 14, characterized in that: The panel has an elastic deformation portion, The circuit substrate supports a switch element, and the switch element is operated by pressing the elastic deformation portion.

16. The electric tool according to claim 14, characterized in that: The panel has a light-transmitting portion, The circuit board supports a light emitting element that radiates light toward the light transmitting portion.

17. The electric tool according to any one of claims 1, 2, 6 and 11, characterized in that: The electric tool comprises: a control circuit board for controlling the motor, and a housing for housing the control circuit board. The housing includes a left housing and a right housing fixed to the left housing by screws. The screw passes through the resin portion.

18. The electric tool according to claim 17, characterized in that: The housing has: a motor housing portion for housing the motor; and a grip portion extending downward from the motor housing portion. and a battery holding portion connected to the lower end portion of the grip portion, A battery mounting portion for mounting a battery for powering the motor is arranged at: a lower portion of the battery holding portion, The panel is arranged on the battery holding portion.

19. The electric tool according to claim 18, characterized in that: The electric tool comprises: a trigger lever provided at the front of the grip portion and operated to start the motor; The panel is arranged at the rear of the battery holding portion.

20. The electric tool according to claim 19, characterized in that The panel is arranged in a recessed portion provided in the battery holding portion.

21. The electric tool according to claim 19, characterized in that: The center of the panel coincides with the center of the battery holding portion in the left-right direction.

22. The electric tool according to claim 18, characterized in that The panel is arranged at a position rearward of a rear end portion of the grip portion.

23. The electric tool according to claim 18, characterized in that The panel is arranged at a position further rearward than a rear end portion of the motor housing portion.

24. The electric tool according to claim 18, characterized in that The control circuit board is accommodated in the battery holding portion.

25. The electric tool according to claim 24, characterized in that The rear end portion of the control circuit substrate is arranged at a rearward position relative to the rear end portion of the grip portion.

26. The electric tool according to claim 24, characterized in that The panel is arranged at a rearward position relative to the control circuit substrate.

27. The electric tool according to any one of claims 1, 2, 6 and 11, characterized in that: The surface of the panel is inclined downward toward the rear.

28. The electric tool according to any one of claims 1, 2, 6 and 11, characterized in that: A dimension of the panel in a left-right direction is greater than a dimension of the panel in a top-bottom direction.

29. The electric tool according to claim 14, characterized in that The surface of the circuit substrate is inclined downward toward the rear.

30. The electric tool according to claim 24, characterized in that The surface of the control circuit substrate is parallel to the motor rotation axis.

Images