Electric work machine

Abstract

To make an electric work machine compact.SOLUTION: An electric work machine includes: a motor; a tool holding part which is rotated by rotational force generated by the motor; a first light-emitting part having first light-emitting elements; a second light-emitting part having second light-emitting elements; and a substrate. The first light-emitting elements are arranged on the surface of the substrate, and the second light-emitting elements are arranged on the back face of the substrate.SELECTED DRAWING: Figure 7

Description

[Technical field]

[0001] The technology disclosed in this specification relates to an electric operating machine. [Background technology]

[0002] 2. Description of the Related Art In the technical field relating to electric operating machines, a screw tightening tool as disclosed in Patent Document 1 is known. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2020-044627 A Summary of the Invention [Problem to be solved by the invention]

[0004] There is a demand for more compact electric work machines.

[0005] The technology disclosed in this specification aims to make an electric operating machine more compact. [Means for solving the problem]

[0006] This specification discloses an electric operating machine. The electric operating machine may include a motor, a tool holding unit that rotates by a rotational force generated by the motor, a first light emitting unit having a first light emitting element, a second light emitting unit having a second light emitting element, and a substrate. The first light emitting element may be disposed on a front surface of the substrate, and the second light emitting element may be disposed on a rear surface of the substrate. Effect of the Invention

[0007] According to the technology disclosed in this specification, it is possible to make the electric operating machine more compact. [Brief description of the drawings]

[0008] [Figure 1]FIG. 1 is a perspective view showing an electric operating machine according to a first embodiment, seen from the upper left rear. [Diagram 2] FIG. 2 is a perspective view showing the electric operating machine according to the first embodiment, seen from the upper right front. [Diagram 3] FIG. 3 is a view of the electric operating machine according to the first embodiment as viewed from above. [Figure 4] FIG. 4 is a view of the electric operating machine according to the first embodiment as viewed from below. [Diagram 5] FIG. 5 is a view of the electric operating machine according to the first embodiment as viewed from the front. [Figure 6] FIG. 6 is a view of the electric operating machine according to the first embodiment as viewed from the left. [Figure 7] FIG. 7 is a vertical cross-sectional view showing the electric operating machine according to the first embodiment. [Figure 8] FIG. 8 is a vertical cross-sectional view showing the front part of the electric operating machine according to the first embodiment. [Figure 9] FIG. 9 is a cross-sectional view showing the front part of the electric operating machine according to the first embodiment. [Figure 10] FIG. 10 is an exploded perspective view showing the front part of the electric operating machine according to the first embodiment, seen from the upper left front. [Figure 11] FIG. 11 is an exploded perspective view showing the front part of the electric operating machine according to the first embodiment, seen from the upper left front. [Figure 12] FIG. 12 is an exploded perspective view showing the illumination light-emitting unit and the notification light-emitting unit according to the first embodiment, as viewed from the upper left rear. [Figure 13] FIG. 13 is an exploded perspective view showing the illumination light-emitting unit and the notification light-emitting unit according to the first embodiment, as viewed from the lower right front. [Figure 14] FIG. 14 is a vertical cross-sectional view showing an illumination light-emitting portion and a notification light-emitting portion according to the first embodiment. [Figure 15] FIG. 15 is a cross-sectional view showing an illumination light-emitting portion and a notification light-emitting portion according to the first embodiment. [Figure 16] FIG. 16 is a vertical cross-sectional view showing the illumination light-emitting section according to the first embodiment. [Figure 17]FIG. 17 is a cross-sectional view showing the notification light-emitting section according to the first embodiment. [Figure 18] FIG. 18 is an enlarged cross-sectional view of a portion of the notification light-emitting portion according to the first embodiment. [Figure 19] FIG. 19 is a diagram showing the substrate according to the first embodiment as viewed from above. [Figure 20] FIG. 20 is a bottom view of the substrate according to the first embodiment. [Figure 21] FIG. 21 is a bottom view of the cylindrical lens according to the first embodiment. [Figure 22] FIG. 22 is an exploded perspective view showing the electric operating machine according to the first embodiment, seen from the upper left rear. [Figure 23] FIG. 23 is an exploded perspective view showing the electric operating machine according to the first embodiment, seen from the upper left rear. [Figure 24] FIG. 24 is an enlarged cross-sectional view of a portion of the notification light-emitting section according to the second embodiment. [Diagram 25] FIG. 25 is a diagram of the substrate according to the third embodiment as viewed from the left. [Figure 26] FIG. 26 is a diagram of the substrate according to the fourth embodiment as viewed from the left. [Figure 27] FIG. 27 is a diagram showing the substrate according to the fifth embodiment as viewed from the left. [Figure 28] FIG. 28 is a diagram of the substrate according to the sixth embodiment as viewed from the left. [Figure 29] FIG. 29 is a diagram showing the substrate according to the seventh embodiment as viewed from the left. [Diagram 30] FIG. 30 is a diagram of the substrate according to the eighth embodiment as viewed from the left. [Diagram 31] FIG. 31 is a perspective view showing the electric operating machine according to the ninth embodiment, seen from the upper left rear. [Diagram 32] FIG. 32 is a view of the electric operating machine according to the ninth embodiment as viewed from the left. [Diagram 33] FIG. 33 is a vertical sectional view showing an electric operating machine according to a ninth embodiment. [Diagram 34]FIG. 34 is a vertical cross-sectional view showing a front part of an electric operating machine according to a ninth embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] In one or more embodiments, an electric operating machine may include a motor, a tool holding unit that rotates by a rotational force generated by the motor, a first light emitting unit having a first light emitting element, a second light emitting unit having a second light emitting element, and a substrate. The first light emitting element may be disposed on a front surface of the substrate, and the second light emitting element may be disposed on a rear surface of the substrate.

[0010] In the above configuration, the first light emitting element is disposed on the front surface of the substrate, and the second light emitting element is disposed on the rear surface of the substrate, so that the electric operating machine is made compact.

[0011] In one or more embodiments, the first light-emitting unit may emit illumination light that illuminates at least the tool held by the tool holding unit.

[0012] In the above configuration, the tool is illuminated with the illumination light.

[0013] In one or more embodiments, the second light-emitting unit may emit notification light that notifies at least the working state.

[0014] In the above configuration, the working state of the electric operating machine is left unattended by the warning light.

[0015] In one or more embodiments, the electric operating machine may include a clutch unit disposed between the motor and the tool holding unit, and a clutch case that houses the clutch unit. The substrate may be fixed to the clutch case.

[0016] With the above configuration, the electric operating machine is made compact.

[0017] In one or more embodiments, the electric operating machine may include a substrate holder that holds a substrate, and a screw that fixes the substrate holder to the clutch case. The substrate may be fixed to the clutch case via the substrate holder.

[0018] With the above configuration, the electric operating machine is made compact.

[0019] In one or more embodiments, the first light emitting portion may have a first lens through which light from the first light emitting element passes. The first lens may be held by a substrate holder.

[0020] With the above configuration, the electric operating machine is made compact.

[0021] In one or more embodiments, a plurality of the first light-emitting elements may be arranged in a direction parallel to the rotation shaft of the motor.

[0022] With the above configuration, unevenness in the light emitted from the first lens in the axial direction is suppressed.

[0023] In one or more embodiments, the electric operating machine may include a clutch unit disposed between the motor and the tool holding unit, and a clutch case that houses the clutch unit. The second light-emitting unit may have a second lens through which light from the second light-emitting element passes. The second lens may be cylindrical and disposed so as to surround the clutch case.

[0024] In the above configuration, the visibility of the second light-emitting portion is improved.

[0025] In one or more embodiments, the electric operating machine may include a screw that secures the second lens to the clutch case.

[0026] In the above configuration, the second lens is fixed.

[0027] In one or more embodiments, the electric operating machine may include a substrate holder for holding the substrate. A screw may fasten the substrate holder and the second lens to the clutch case.

[0028] In the above configuration, the substrate holder and the second lens are fixed.

[0029] In one or more embodiments, a plurality of the second light-emitting elements may be arranged in a direction parallel to the rotation shaft of the motor.

[0030] With the above configuration, unevenness in the light emitted from the second lens in the axial direction is suppressed.

[0031] Hereinafter, an embodiment according to the present disclosure will be described with reference to the drawings, but the present disclosure is not limited to the embodiment. The components of the embodiments described below can be appropriately combined. In addition, some components may not be used.

[0032] In the embodiment, the positional relationship of each part will be described using the terms left, right, front, rear, top, and bottom. These terms indicate relative positions or directions based on the center of the electric operating machine. The left-right direction, the front-rear direction, and the top-bottom direction are perpendicular to each other.

[0033] The electric operating machine has a motor. In the embodiments, a direction parallel to a rotation axis AX of the motor is appropriately referred to as an axial direction. A radial direction of the rotation axis AX of the motor is appropriately referred to as a radial direction. A direction going around the rotation axis AX of the motor is appropriately referred to as a circumferential direction or a rotation direction.

[0034] A position or direction on one side in the axial direction is appropriately referred to as "one axial side," and a position or direction on the other side in the axial direction is appropriately referred to as "the other axial side." In the embodiment, the axial direction and the front-rear direction are parallel. The one axial side is the front side, and the other axial side is the rear side.

[0035] In the radial direction, a position closer to or approaching the motor's rotation shaft AX is appropriately referred to as the radially inner side, and a position farther from or away from the motor's rotation shaft AX is appropriately referred to as the radially outer side.

[0036] A position or direction on one side in the circumferential direction will be referred to as "one circumferential side" as appropriate, and a position or direction on the other side in the circumferential direction will be referred to as "the other circumferential side" as appropriate.

[0037] [First embodiment] A first embodiment will be described.

[0038] <Electric work equipment> FIG. 1 is a perspective view of the electric working machine 1 according to this embodiment from the upper left rear. FIG. 2 is a perspective view of the electric working machine 1 according to this embodiment from the upper right front. FIG. 3 is a view of the electric working machine 1 according to this embodiment from above. FIG. 4 is a view of the electric working machine 1 according to this embodiment from below. FIG. 5 is a view of the electric working machine 1 according to this embodiment from the front. FIG. 6 is a view of the electric working machine 1 according to this embodiment from the left. FIG. 7 is a vertical cross-sectional view of the electric working machine 1 according to this embodiment. FIG. 8 is a vertical cross-sectional view of the front part of the electric working machine 1 according to this embodiment. FIG. 9 is a horizontal cross-sectional view of the front part of the electric working machine 1 according to this embodiment. FIG. 9 corresponds to the cross-sectional view taken along the line AA in FIG. 8.

[0039] In this embodiment, the electric operating machine 1 is an angle screwdriver, which is a type of screw tightening tool.

[0040] The electric work machine 1 comprises a main body housing 2, a clutch case 5, a front housing 10, a controller 15, an external connection terminal 68, a sound output element 70, a trigger lever 19, a forward / reverse rotation switch button 20, a motor 4, a reduction mechanism unit 53, a clutch unit 6, a spindle 48, an intermediate shaft 57, an output unit 11, and a detection element 67.

[0041] The main housing 2 is a cylindrical member extending in the front-rear direction. The main housing 2 includes a left half housing 2A and a right half housing 2B disposed to the left of the left half housing 2A. The left half housing 2A and the right half housing 2B are fixed together by a plurality of screws 9.

[0042] The main body housing 2 has a motor accommodating section 3, a grip section 7 arranged behind the motor accommodating section 3, and a battery attachment section 8 arranged behind the grip section 7. The motor accommodating section 3 accommodates the motor 4. The grip section 7 is held by an operator. The battery attachment section 8 holds a battery pack 13.

[0043] The clutch case 5 is a cylindrical member disposed on the front side of the main housing 2. The clutch case 5 accommodates the clutch unit 6. The clutch case 5 is fixed to the front part of the main housing 2. The clutch case 5 is fixed to the front part of the main housing 2 by a plurality of screws 31.

[0044] The front housing 10 is a cylindrical member disposed on the front side of the clutch case 5. The front housing 10 is bent downward at a middle portion of the front housing 10. The front housing 10 accommodates the output portion 11. The front housing 10 is fixed to the front portion of the clutch case 5. The front housing 10 has a bent tubular portion 55 and a threaded sleeve 56 disposed around the rear portion of the bent tubular portion 55. The threaded sleeve 56 is coupled to a threaded portion 54 provided on the front portion of the clutch case 5, whereby the front housing 10 is fixed to the front portion of the clutch case 5.

[0045] The battery pack 13 is a power source for the electric work machine 1. The battery mounting section 8 holds a terminal block 14 that is electrically connected to the battery pack 13. The battery pack 13 is attached to and detached from the terminal block 14. The battery pack 13 is attached to the terminal block 14 by sliding the battery pack 13 from below to above the terminal block 14.

[0046] The controller 15 controls at least the motor 4. The controller 15 is housed in the battery mounting section 8. The controller 15 has a control circuit board 16 on which electronic components such as a capacitor, a microcomputer, and a switching element are mounted, and a case 17 that houses the control circuit board 16.

[0047] The external connection terminal 68 is connected to an external device. The external connection terminal 68 is disposed above the terminal block 14. An example of the external connection terminal 68 is a Universal Serial Bus (USB) terminal. An example of the external device is a personal computer. The personal computer can change the settings of the controller 15 via the external connection terminal 68. The external connection terminal 68 is covered with a cover 69.

[0048] The sound output element 70 outputs a notification sound. An example of the sound output element 70 is a buzzer. The sound output element 70 is housed in the grip portion 7. The sound output element 70 is an example of a notification element. The notification element notifies at least the working state of the electric working machine 1.

[0049] The trigger lever 19 protrudes downward from the lower front part of the grip part 7. The trigger lever 19 is operated by an operator to drive the motor 4. The trigger lever 19 is connected to a trigger switch 18. The trigger switch 18 is housed in the grip part 7. When the trigger lever 19 is operated to move upward, an operation signal for driving the motor 4 is transmitted from the trigger switch 18 to the controller 15.

[0050] The forward / reverse switching button 20 protrudes in the left-right direction from the front of the grip portion 7. The forward / reverse switching button 20 is operated by an operator to switch the rotation direction of the motor 4.

[0051] The motor 4 is a power source of the electric work machine 1. The motor 4 is an inner rotor type brushless motor. The motor 4 has a stator 21 and a rotor 22 that rotates relative to the stator 21. The rotor 22 rotates about a rotation axis AX that extends in the front-rear direction.

[0052] The stator 21 has a stator core 23, insulators 24 fixed to the front and rear of the stator core 23, a plurality of coils 25 wound around the stator core 23 via the insulators 24, and a terminal unit 32 that short-circuits the multiple coils 25.

[0053] The rotor 22 has a rotor shaft 26, a rotor core 27 arranged around the rotor shaft 26, a plurality of permanent magnets 28 fixed to the outer peripheral surface of the rotor core 27, and a plurality of permanent magnets 29 for sensors fixed to the front end surface of the rotor core 27.

[0054] A sensor circuit board 30 is fixed to the front insulator 24. The sensor circuit board 30 supports a rotation detection element that detects the rotation of the rotor 22. The rotation detection element includes a magnetic sensor that detects the position of the sensor permanent magnet 29. A detection signal of the rotation detection element is transmitted to the controller 15. The controller 15 controls the drive current supplied to the motor 4 based on the detection signal of the rotation detection element.

[0055] Inside the main housing 2, a front wall 33 that separates the motor accommodating portion 3 and the clutch case 5, and a rear rib 34 that separates the motor accommodating portion 3 and the grip portion 7 are provided.

[0056] The rotor shaft 26 extends in the front-rear direction. The front part of the rotor shaft 26 is rotatably supported by a bearing 36. The rear part of the rotor shaft 26 is rotatably supported by a bearing 37. The bearing 36 is held by a cylindrical bearing holder 35 supported by the front wall 33. The bearing 37 is held in the center of the rear rib 34. A centrifugal fan 38 is fixed to a part of the rotor shaft 26 between the stator 21 and the bearing 37. The centrifugal fan 38 rotates together with the rotor shaft 26. When the centrifugal fan 38 rotates, an airflow for cooling the motor 4 is generated. A plurality of intake ports 39 are formed in a part of the motor housing 3 radially outside the stator 21. A plurality of exhaust ports 40 are formed in a part of the motor housing 3 radially outside the centrifugal fan 38. When the centrifugal fan 38 rotates, air outside the motor housing 3 flows into the inside of the motor housing 3 through the intake port 39. The air that has flowed into the motor accommodating section 3 flows toward the exhaust port 40 while coming into contact with the motor 4. The air comes into contact with the motor 4, thereby cooling the motor 4. After passing through the motor 4, the air flows out of the motor accommodating section 3 via the exhaust port 40.

[0057] A front end of rotor shaft 26 is disposed forward of bearing holder 35. Bearing holder 35 is disposed around rotor shaft 26. A pinion gear 41 is fixed to the front end of rotor shaft 26. Rotor shaft 26 is coupled to speed reduction mechanism 53 via pinion gear 41.

[0058] The speed reduction mechanism 53 transmits the rotational force generated by the motor 4 to the spindle 48. The speed reduction mechanism 53 reduces the rotational speed of the rotor shaft 26 and transmits the reduced rotational speed to the spindle 48. The speed reduction mechanism 53 connects the rotor shaft 26 and the spindle 48. The speed reduction mechanism 53 rotates the spindle 48 at a rotational speed lower than the rotational speed of the rotor shaft 26. The speed reduction mechanism 53 includes a planetary gear mechanism that is driven based on the rotational force generated by the motor 4.

[0059] The reduction mechanism 53 is disposed between the motor 4 and the output unit 11 in the front-rear direction. The reduction mechanism 53 has an internal gear 42, front and rear two-stage planetary gears 44 disposed inside the internal gear 42, and front and rear two-stage carriers 43 supporting the planetary gears 44. The pinion gear 41 is coupled to the rear-stage planetary gear 44.

[0060] Clutch unit 6 is disposed between motor 4 and output unit 11 in the front-rear direction. Clutch unit 6 is disposed between speed reduction mechanism unit 53 and output unit 11 in the front-rear direction. Clutch unit 6 operates to change between an engaged state in which the rotational force of motor 4 transmitted via speed reduction mechanism unit 53 is transmitted to output unit 11, and a released state in which the transmission of the rotational force of motor 4 to output unit 11 is interrupted.

[0061] The clutch unit 6 has a rear cam 45 that rotates together with the front-stage carrier 43, and a front cam 47 that is coupled to the rear cam 45 via a cam ball 46. The rear cam 45 and the front cam 47 can rotate together in the rotational direction by the cam ball 46.

[0062] The spindle 48 is connected to the speed reduction mechanism 53 via the clutch unit 6. The spindle 48 has a cam groove 49. A ball 50 is disposed in the cam groove 49. The spindle 48 is coupled to the front cam 47 via the ball 50. The front cam 47 and the spindle 48 can rotate together in the rotational direction by the ball 50. The front cam 47 can move in the front-rear direction relative to the spindle 48.

[0063] A spring receiver 51 is disposed around the front of the spindle 48. The spring receiver 51 is disposed forward of the front cam 47. A coil spring 52 is disposed between the spring receiver 51 and the front cam 47. The coil spring 52 biases the front cam 47 rearward. Due to the biasing force of the coil spring 52, the front cam 47 is disposed in a retracted position where it engages with the cam ball 46.

[0064] The output section 11 has an intermediate shaft 57 and an output shaft 12. The intermediate shaft 57 is connected to a front portion of the spindle 48. A hexagonal columnar portion is provided at a rear end of the intermediate shaft 57. A hexagonal hole is provided at a front end of the spindle 48. The hexagonal columnar portion of the intermediate shaft 57 is fitted into the hexagonal hole of the spindle 48. The intermediate shaft 57 rotates together with the spindle 48. The rear portion of the intermediate shaft 57 is housed in the clutch case 5. The front portion of the intermediate shaft 57 is housed in the bent tube portion 55. A bevel gear 58 is provided at a front end of the intermediate shaft 57. The intermediate shaft 57 is rotatably supported by a bearing 59.

[0065] The output shaft 12 rotates about a rotation axis extending in the vertical direction. The output shaft 12 is rotatably supported by a bearing 60. The lower end of the output shaft 12 protrudes downward from the front housing 10. A bevel gear 61 is provided at the upper end of the output shaft 12. The bevel gear 58 of the intermediate shaft 57 and the bevel gear 61 of the output shaft 12 are coupled together. When the spindle 48 rotates and the intermediate shaft 57 rotates, the output shaft 12 rotates. The output shaft 12 rotates while holding a driver bit, which is a type of tool. The output shaft 12 is an example of a tool holding portion that rotates by the rotational force generated by the motor 4.

[0066] The clutch unit 6 operates to change between an engaged state in which the rotational force of the motor 4 transmitted via the speed reducing mechanism unit 53 is transmitted to the output unit 11, and a released state in which the transmission of the rotational force of the motor 4 to the output unit 11 is interrupted. In the engaged state, when the rear cam 45 rotates together with the front stage carrier 43 due to the rotational force of the motor 4, the front cam 47 rotates via the cam ball 46, and the spindle 48 rotates via the ball 50. The rotation of the spindle 48 rotates the intermediate shaft 57, and the output shaft 12 rotates via the bevel gear 58 and the bevel gear 61.

[0067] In a screw tightening operation, the motor 4 starts to be driven with the clutch unit 6 in the engaged state. When the load torque transmitted from the output shaft 12 to the spindle 48 via the intermediate shaft 57 during the screw tightening operation exceeds the set torque, the clutch unit 6 changes from the engaged state to the released state. When the load torque exceeds the set torque, it means that the screw has been tightened with the target tightening force and the screw tightening operation has been performed successfully. The set torque is determined by the rearward biasing force of the coil spring 52 against the front cam 47.

[0068] When the clutch unit 6 is in the released state, the front cam 47 advances via the ball 50 rolling in the cam groove 49, disengaging from the cam ball 46 and allowing it to rotate freely relative to the rear cam 45. This blocks the transmission of the rotational force of the motor 4 to the spindle 48, and the clutch unit 6 enters the released state.

[0069] That is, when the load torque transmitted from the output shaft 12 to the spindle 48 is equal to or less than the set torque, the front cam 47 is placed in the retracted position by the rearward biasing force of the coil spring 52. When the front cam 47 is placed in the retracted position, the clutch unit 6 is in an engaged state, and the rotational force of the motor 4 is transmitted to the spindle 48. When the load torque transmitted from the output shaft 12 to the spindle 48 exceeds the set torque, the front cam 47 is moved to the forward position against the biasing force of the coil spring 52. When the front cam 47 is placed in the forward position, the clutch unit 6 is in a released state, and the rotational force of the motor 4 is not transmitted to the spindle 48.

[0070] The detection element 67 is supported by a detection board 66. The detection element 67 detects the release state of the clutch unit 6. A sensor plate 62 is disposed below the clutch unit 6. The sensor plate 62 holds a magnet 65. The sensor plate 62 is movable in the front-rear direction. The sensor plate 62 is biased rearward by a coil spring 63. The sensor plate 62 has an engagement piece 64 that protrudes upward from the front of the sensor plate 62. The engagement piece 64 is disposed in front of the front cam 47. When the clutch unit 6 is in the release state, the front cam 47 moves to the forward position while in contact with the engagement piece 64. As the front cam 47 moves to the forward position, the sensor plate 62 holding the magnet 65 moves forward together with the front cam 47.

[0071] The detection board 66 supporting the detection element 67 is disposed below the sensor plate 62. The detection element 67 includes a magnetic sensor capable of detecting the movement of the magnet 65 held by the sensor plate 62. An example of the magnetic sensor is a Hall IC. When the clutch unit 6 is actuated and the sensor plate 62 moves forward, the detection element 67 detects a change in the magnetic field of the magnet 65. A detection signal from the detection element 67 is transmitted to the controller 15.

[0072] <Light-emitting unit for illumination and light-emitting unit for notification> The electric working machine 1 has an illumination light-emitting unit 71 and a notification light-emitting unit 72. The illumination light-emitting unit 71 emits illumination light that illuminates at least a driver bit held by the output shaft 12. The notification light-emitting unit 72 emits notification light that notifies at least the working state of the electric working machine 1. The working state of the electric working machine 1 includes the operating state of the clutch unit 6. The working state of the electric working machine 1 includes a screw tightening work state.

[0073] The illumination light-emitting unit 71 emits one color light. The illumination light emitted from the illumination light-emitting unit 71 is, for example, white light.

[0074] The notification light-emitting unit 72 can emit light of a plurality of colors. The notification light emitted from the illumination light-emitting unit 71 includes at least one of green notification light, yellow notification light, and red notification light.

[0075] The illumination light-emitting unit 71 emits illumination light in cooperation with the trigger switch 18. The illumination light-emitting unit 71 emits illumination light in cooperation with the motor 4. When the trigger lever 19 is operated to move upward and the trigger switch 18 is turned on, the motor 4 is driven. When the operation of the trigger lever 19 is released and the trigger switch 18 is turned off, the motor 4 is stopped. The illumination light-emitting unit 71 emits illumination light when the trigger switch 18 is turned on. The illumination light-emitting unit 71 does not emit illumination light when the trigger switch 18 is turned off. The illumination light-emitting unit 71 emits illumination light when the motor 4 is driving. The illumination light-emitting unit 71 does not emit illumination light when the motor 4 is stopped.

[0076] The notification light-emitting unit 72 emits notification light in cooperation with the clutch unit 6. When the motor 4 is driven and a screw tightening operation is being performed and the clutch unit 6 is in an engaged state, the notification light-emitting unit 72 does not emit notification light.

[0077] When the clutch unit 6 changes from an engaged state to a released state while the motor 4 is being driven and a screw tightening operation is being performed, the notification light-emitting unit 72 emits, for example, a green notification light. As described above, the clutch unit 6 changes from an engaged state to a released state when the front cam 47 moves from the retracted position to the advanced position. When the front cam 47 moves from the retracted position to the advanced position, the magnet 65 held by the front cam 47 moves forward. The detection element 67 can detect the forward movement of the magnet 65. When the detection element 67 detects the forward movement of the magnet 65, the controller 15 determines that the screw tightening operation is in a good state, and causes the notification light-emitting unit 72 to emit, for example, a green notification light.

[0078] When the motor 4 is driven and a screw tightening operation is being performed and the clutch unit 6 does not change from an engaged state to a released state, the notification light-emitting unit 72 emits, for example, a red notification light. For example, during a screw tightening operation, the operator may release the operation of the trigger lever 19 before the screw is tightened with the target tightening force. If the motor 4 stops before the detection element 67 detects the forward movement of the magnet 65, the controller 15 determines that the screw tightening operation is in a poor state and causes the notification light-emitting unit 72 to emit, for example, a red notification light.

[0079] The working state of the electric work machine 1 notified by the notification light-emitting unit 72 is not limited to the operating state of the clutch unit 6 or the screw tightening working state. For example, when the remaining capacity of the battery pack 13 is low, the controller 15 may cause the notification light-emitting unit 72 to flash a red notification light. When the voltage input to the controller 15 becomes abnormal, the controller 15 may cause the notification light-emitting unit 72 to alternately light up a red notification light and a green notification light. When the temperature of the controller 15 becomes abnormal, the controller 15 may cause the notification light-emitting unit 72 to flash a red light.

[0080] Furthermore, the sound output element 70, which is an example of an alarm element, outputs at least an alarm sound that notifies the user of the working state of the electric work machine 1. When the detection element 67 detects the forward movement of the magnet 65, the controller 15 causes the alarm light-emitting part 72 to emit, for example, a green alarm light and causes the sound output element 70 to output a first alarm sound. When the motor 4 stops before the detection element 67 detects the forward movement of the magnet 65, the controller 15 causes the alarm light-emitting part 72 to emit, for example, a red alarm light and causes the sound output element 70 to output a second alarm sound.

[0081] For example, when the remaining capacity of the battery pack 13 is low, the controller 15 may cause the notification light-emitting unit 72 to flash a red notification light and output a third notification sound from the sound output element 70. When the voltage input to the controller 15 is abnormal, the controller 15 may cause the notification light-emitting unit 72 to alternately light up a red notification light and a green notification light and output a fourth notification sound from the sound output element 70. When the temperature of the controller 15 is abnormal, the controller 15 may cause the notification light-emitting unit 72 to flash a red light and output a fifth notification sound from the sound output element 70.

[0082] FIG. 10 is an exploded perspective view of the front part of the electric working machine 1 according to this embodiment, seen from the upper left front. FIG. 11 is an exploded perspective view of the front part of the electric working machine 1 according to this embodiment, seen from the upper left front. FIG. 12 is an exploded perspective view of the illumination light-emitting unit 71 and the notification light-emitting unit 72 according to this embodiment, seen from the upper left rear. FIG. 13 is an exploded perspective view of the illumination light-emitting unit 71 and the notification light-emitting unit 72 according to this embodiment, seen from the lower right front. FIG. 14 is a vertical cross-sectional view of the illumination light-emitting unit 71 and the notification light-emitting unit 72 according to this embodiment. FIG. 15 is a horizontal cross-sectional view of the illumination light-emitting unit 71 and the notification light-emitting unit 72 according to this embodiment. FIG. 15 corresponds to a cross-sectional view of the illumination light-emitting unit 71 and the notification light-emitting unit 72 according to this embodiment. FIG. 16 is a vertical cross-sectional view of the illumination light-emitting unit 71 according to this embodiment. FIG. 17 is a horizontal cross-sectional view of the notification light-emitting unit 72 according to this embodiment. FIG. 18 is a horizontal cross-sectional view of an enlarged portion of the notification light-emitting unit 72 according to this embodiment.

[0083] The illumination light-emitting unit 71 has a plurality of light-emitting elements 73 (first light-emitting elements) and a transmission lens 74 (first lens). The notification light-emitting unit 72 has a plurality of light-emitting elements 75 (second light-emitting elements), a light diffusion lens 76, and a cylindrical lens 77 (second lens). The electric work machine 1 includes a substrate 78.

[0084] Fig. 19 is a diagram showing the substrate 78 according to this embodiment as viewed from above. Fig. 20 is a diagram showing the substrate 78 according to this embodiment as viewed from below.

[0085] The light emitting element 73 is disposed on the front surface (lower surface) of the substrate 78. The light emitting element 75 is disposed on the rear surface (upper surface) of the substrate 78. A screw through hole 781 is provided in the rear part of the substrate 78.

[0086] The light emitting element 73 is a light emitting diode (LED). A plurality of light emitting elements 73 are arranged in the front-rear direction on the lower surface of the substrate 78. In this embodiment, two light emitting elements 73 are arranged in the front-rear direction.

[0087] The transmission lens 74 transmits the light emitted from the light emitting element 73. The transmission lens 74 is disposed below the substrate 78. The transmission lens 74 faces the light emitting element 73. The transmission lens 74 includes a bent portion 741 that faces the front light emitting element 73 and a flat portion 742 that faces the rear light emitting element 73. The bent portion 741 bends upward toward the front. The light emitted from the light emitting element 73 and transmitted through the bent portion 741 is irradiated forward of the transmission lens 74. The light transmitted through the bent portion 741 is irradiated to the output shaft 12 or a driver bit held by the output shaft 12. The light emitted from the light emitting element 73 and transmitted through the flat portion 742 is irradiated below the transmission lens 74.

[0088] The light emitting element 75 is a light emitting diode (LED). A plurality of light emitting elements 75 are arranged in the front-rear direction on the upper surface of the substrate 78. In this embodiment, three light emitting elements 73 are arranged in the front-rear direction.

[0089] The light diffusion lens 76 and the cylindrical lens 77 are each disposed between the motor 4 and the output shaft 12 in the front-rear direction. The light diffusion lens 76 is disposed on the upper side of the substrate 78. The cylindrical lens 77 is disposed above the light diffusion lens 76. The light diffusion lens 76 is disposed between the light emitting element 75 and the cylindrical lens 77 in the up-down direction.

[0090] The light diffusing lens 76 has an incident surface 761 facing the light emitting element 75 and an exit surface 762 facing the cylindrical lens 77. Each of the incident surface 761 and the exit surface 762 is a substantially flat surface. The incident surface 761 and the exit surface 762 are substantially parallel. An incident groove 763 is provided on the incident surface 761. The incident groove 763 is provided so as to be recessed upward from the incident surface 761. An exit groove 764 is provided on the exit surface 762. The exit groove 764 is provided so as to be recessed downward from the exit surface 762. Each of the incident groove 763 and the exit groove 764 is long in the front-rear direction. In each of the front-rear direction and the left-right direction, the position of the incident groove 763 and the position of the exit groove 764 coincide with each other.

[0091] Each of the entrance groove 763 and the exit groove 764 includes a triangular groove. In a cross section perpendicular to the rotation axis AX, the angle α of the entrance groove 763 is smaller than the angle β of the exit groove 764. As an example, the angle α is 90 degrees, and the angle β is 115 degrees. Furthermore, the depth Da of the entrance groove 763 is deeper than the depth Db of the exit groove 764. As an example, the depth Da is 0.5 mm, and the depth Db is 0.3 mm.

[0092] The cylindrical lens 77 transmits light from the light emitting element 75. The cylindrical lens 77 is disposed so as to surround the clutch case 5. The cylindrical lens 77 is rotatably supported by the clutch case 5. The cylindrical lens 77 is disposed so that the central axis of the cylindrical lens 77 coincides with the rotation axis AX of the motor 4. The central axis of the cylindrical lens 77 extends in the front-rear direction.

[0093] 21 is a bottom view of the cylindrical lens 77 according to this embodiment. The axial dimension La of the cylindrical lens 77 is smaller than the radial dimension Wa of the cylindrical lens 77.

[0094] The cylindrical lens 77 has an incident portion 771 into which light from the light emitting element 75 is incident. A recess 772 recessed radially inward from the outer circumferential surface of the cylindrical lens 77 is provided in a part of the cylindrical lens 77. The recess 772 recesses upward from a lower portion of the outer circumferential surface of the cylindrical lens 77. In this embodiment, the recess 772 is a through portion that penetrates the outer circumferential surface and the inner circumferential surface of the cylindrical lens 77. In the following description, the recess 772 will be referred to as a through portion 772 as appropriate.

[0095] The through-hole 772 is a through-hole that penetrates the outer peripheral surface and the inner peripheral surface of the cylindrical lens 77. The through-hole 772 is long in a direction parallel to the central axis of the cylindrical lens. The incident portion 771 includes the inner surface of the through-hole 772. The cylindrical lens 77 has a screw through-hole 773 formed forward of the through-hole 772.

[0096] The light emitting element 75 is disposed radially outward from the cylindrical lens 77. The light emitting element 75 irradiates the cylindrical lens 77 with light via the light diffusing lens 76. The light emitted from the light emitting element 75 enters the entrance groove 763 of the light diffusing lens 76. At least a part of the light from the light emitting element 75 that enters the entrance groove 763 passes through the light diffusing lens 76 and is then emitted from the emission groove 764. The light that is emitted from the emission groove 764 enters the entrance portion 771 of the cylindrical lens 77. At least a part of the light that enters the entrance portion 771 propagates inside the cylindrical lens 77 and is then emitted radially outward from the outer circumferential surface of the cylindrical lens 77.

[0097] The electric operating machine 1 includes a clutch unit 6 disposed between the motor 4 and the output shaft 12 in the front-rear direction, a clutch case 5 that houses the clutch unit 6, and a board holder 79 that holds a board 78.

[0098] The substrate holder 79 holds a substrate 78. The substrate holder 79 holds a transmission lens 74. The transmission lens 74 is disposed below the substrate 78. The substrate holder 79 has a screw through hole 791, a screw through hole 792 provided rearward of the screw through hole 791, and an opening 793 provided between the screw through hole 791 and the screw through hole 792 in the front-rear direction. At least a portion of the substrate 78 is disposed in the opening 793. Light emitted from the light emitting element 73 is transmitted through the transmission lens 74 and then emitted from the opening 793.

[0099] The front part of the substrate holder 79 is fixed to the clutch case 5 by a screw 80. The cylindrical lens 77 is fixed to the clutch case 5 by the screw 80. The screw 80 is inserted into a screw through hole 791 and a screw through hole 773, and then inserted into a screw hole 82 provided in the clutch case 5. The screw 80 fastens the substrate holder 79, the cylindrical lens 77, and the clutch case 5 together.

[0100] The rear part of the board holder 79 is fixed to the clutch case 5 by a screw 81. The screw 81 is inserted into a screw through hole 792 and a screw through hole 781, and then inserted into a screw hole 83 provided in the clutch case 5. The screw 81 fastens the board holder 79, the board 78, and the clutch case 5 together.

[0101] The substrate 78 is fixed to the clutch case 5. A substrate holder 79 that holds the substrate 78 is fixed to the clutch case 5 by screws 80 and 81, thereby fixing the substrate 78 to the clutch case 5. The substrate 78 is fixed to the clutch case 5 via the substrate holder 79. The cylindrical lens 77 is fixed to the clutch case 5 by screws 80. The screws 80 fix the substrate holder 79 and the cylindrical lens 77 to the clutch case 5.

[0102] <Operation> Next, the operation of the electric work machine 1 will be described. With the driver bit attached to the output shaft 12 pressed against a screw, the operator operates the trigger lever 19 so that the trigger lever 19 moves upward. When the trigger switch 18 is turned on by operating the trigger lever 19, a drive current is supplied from the battery pack 13 via the controller 15 to the motor 4, and the motor 4 is driven. The controller 15 supplies a drive current to each of the multiple coils 25 based on a detection signal transmitted from the rotation detection element of the sensor circuit board 30. The supply of the drive current to the coils 25 causes the rotor 22 to rotate.

[0103] When the rotor shaft 26 rotates due to the rotation of the rotor 22, the rotational force of the rotor shaft 26 is transmitted to the spindle 48 via the reduction mechanism 53. When the load torque transmitted from the output shaft 12 to the spindle 48 is equal to or less than the set torque, the clutch unit 6 is in an engaged state, so that the rotational force of the rotor shaft 26 is transmitted to the spindle 48 via the reduction mechanism 53 and the clutch unit 6, and the spindle 48 rotates. The rotation of the spindle 48 rotates the intermediate shaft 57 and the output shaft 12. The rotation of the output shaft 12 rotates the driver bit, and the screw tightening operation progresses.

[0104] When the trigger switch 18 is turned on, the controller 15 causes illumination light to be emitted from the illumination light-emitting unit 71. Furthermore, the rotation of the rotor shaft 26 causes the centrifugal fan 38 to rotate together with the rotor shaft 26. The rotation of the centrifugal fan 38 causes air to flow into the motor housing 3 from the air intake 39. The air that has flowed into the motor housing 3 cools the motor 4, and then is discharged from the air exhaust 40.

[0105] As the screw tightening operation progresses, the screw is tightened to the target screw with the target tightening force, and when the load torque transmitted from the output shaft 12 to the spindle 48 exceeds the set torque, the front cam 47 moves forward and the clutch unit 6 is released. When the clutch unit 6 is released, the rotation of the output shaft 12 stops.

[0106] When the clutch unit 6 is released, the sensor plate 62 holding the magnet 65 advances together with the front cam 47. The detection element 67 detects the advance of the magnet 65. When the detection element 67 detects the advance of the magnet 65, the controller 15 determines that the screw tightening operation state is good based on the detection signal of the detection element 67, and causes the notification light-emitting unit 72 to emit a green notification light. When the motor 4 stops before the detection element 67 detects the advance of the magnet 65, the controller 15 determines that the screw tightening operation state is poor, and causes the notification light-emitting unit 72 to emit a red notification light.

[0107] Furthermore, when the detection element 67 detects the forward movement of the magnet 65, the controller 15 causes the notification light-emitting unit 72 to emit a green notification light and causes the sound output element 70 to output a first notification sound. When the motor 4 stops before the detection element 67 detects the forward movement of the magnet 65, the controller 15 causes the notification light-emitting unit 72 to emit, for example, a red notification light and causes the sound output element 70 to output a second notification sound.

[0108] <Clutch adjustment> 22 and 23 are each an exploded perspective view showing the electric operating machine 1 according to this embodiment, viewed from the upper left rear.

[0109] 22, an opening 84 into which a jig for adjusting the clutch portion 6 can be inserted is provided in a part of the clutch case 5. The opening 84 is provided in the upper part of the clutch case 5. The cylindrical lens 77 is rotatable around the clutch case 5 so as to change between a state in which the opening 84 is covered and a state in which the opening 84 is not covered.

[0110] 1 to 8, for example, when a screw tightening operation is performed, the cylindrical lens 77 is fixed to the clutch case 5 by the screws 80 and 81 with the opening 84 covered by the cylindrical lens 77. By covering the opening 84 with the cylindrical lens 77, intrusion of foreign matter from the outside of the clutch case 5 into the inside is suppressed.

[0111] 23, when a jig for adjusting the clutch portion 6 is inserted into the opening 84, the position of the cylindrical lens 77 in the rotational direction is adjusted so that the opening 84 is not covered. The position of the cylindrical lens 77 in the rotational direction is adjusted so that the through-hole 772 and the opening 84 coincide with each other. An operator can insert the jig into the clutch case 5 through the opening 84 to adjust the clutch portion 6.

[0112] <Effects> As described above, in this embodiment, the electric work machine 1 may include the motor 4, the output shaft 12 which is a tool holding unit that rotates by the rotational force generated by the motor 4, the illumination light-emitting unit 71 which is a first light-emitting unit having the light-emitting element 73 which is a first light-emitting element, the notification light-emitting unit 72 which is a second light-emitting unit having the light-emitting element 75 which is a second light-emitting element, and the substrate 78. The light-emitting element 73 may be disposed on the front surface of the substrate 78, and the light-emitting element 75 may be disposed on the back surface of the substrate 78.

[0113] In the above configuration, the light emitting element 73 is disposed on the front surface of the substrate 78, and the light emitting element 75 is disposed on the rear surface of the substrate 78, so that the electric operating machine 1 is made compact.

[0114] In this embodiment, the illumination light-emitting portion 71 may emit illumination light that illuminates at least a tool held by the output shaft 12.

[0115] In the above configuration, the tool is illuminated with the illumination light.

[0116] In this embodiment, the notification light-emitting portion 72 may emit notification light that notifies at least the working state.

[0117] In the above configuration, the working state of the electric operating machine 1 is left unattended by the notification light.

[0118] In this embodiment, the electric operating machine 1 may include a clutch unit 6 disposed between the motor 4 and the output shaft 12, and a clutch case 5 that houses the clutch unit 6. The substrate 78 may be fixed to the clutch case 5.

[0119] With the above configuration, the electric operating machine 1 is made compact.

[0120] In this embodiment, the electric operating machine 1 may include a board holder 79 that holds the board 78, and a screw 81 that fixes the board holder 79 to the clutch case 5. The board 78 may be fixed to the clutch case 5 via the board holder 79.

[0121] With the above configuration, the electric operating machine 1 is made compact.

[0122] In this embodiment, the illumination light-emitting section 71 may have a transmission lens 74 which is a first lens through which the light from the light-emitting element 73 passes. The transmission lens 74 may be held by a substrate holder 79.

[0123] With the above configuration, the electric operating machine 1 is made compact.

[0124] In this embodiment, a plurality of light emitting elements 73 may be arranged in a direction parallel to the rotation axis AX of the motor 4.

[0125] In the above configuration, unevenness in the light emitted from the transmission lens 74 in the axial direction is suppressed.

[0126] In this embodiment, the electric operating machine 1 may include a clutch unit 6 disposed between the motor 4 and the output shaft 12, and a clutch case 5 that houses the clutch unit 6. The notification light-emitting unit 72 may have a cylindrical lens 77 that is a second lens through which the light from the light-emitting element 75 passes. The cylindrical lens 77 is cylindrical, and may be disposed so as to surround the clutch case 5.

[0127] In the above configuration, the visibility of the notification light-emitting portion 72 is improved.

[0128] In this embodiment, the electric operating machine 1 may include a screw 80 for fixing the cylindrical lens 77 to the clutch case 5 .

[0129] In the above configuration, the cylindrical lens 77 is fixed.

[0130] In this embodiment, the electric operating machine 1 may include a board holder 79 that holds a board 78. A screw 80 may fix the board holder 79 and the cylindrical lens 77 to the clutch case 5.

[0131] In the above configuration, the substrate holder 79 and the cylindrical lens 77 are fixed.

[0132] In this embodiment, a plurality of light emitting elements 75 may be arranged in a direction parallel to the rotation axis AX of the motor 4.

[0133] In the above configuration, unevenness in the light emitted from the cylindrical lens 77 in the axial direction is suppressed.

[0134] In this embodiment, the electric work machine 1 may include a motor 4, an output shaft 12 which is a tool holding section which rotates due to the rotational force generated by the motor 4, a cylindrical lens 77 arranged between the motor 4 and the output shaft 12, and a light-emitting element 75 which is arranged radially outward from the cylindrical lens 77 and which irradiates light onto the cylindrical lens 77.

[0135] In the above configuration, since the notification light is emitted from the cylindrical lens 77, the visibility of the notification light-emitting portion 72 is improved.

[0136] In this embodiment, the cylindrical lens 77 may be disposed so that the central axis of the cylindrical lens 77 and the rotation axis AX of the motor 4 coincide with each other.

[0137] In the above configuration, the visibility of the notification light-emitting portion 72 is improved.

[0138] In this embodiment, the axial dimension of the cylindrical lens 77 may be smaller than the radial dimension of the cylindrical lens 77 .

[0139] In the above configuration, the axial dimension of the electric operating machine 1 is prevented from increasing.

[0140] In the above configuration, the light emitted from the light emitting element 75 can be incident on the inner surface of the through portion 772 .

[0141] In this embodiment, a plurality of light emitting elements 75 may be arranged in a direction parallel to the central axis of the cylindrical lens 77 .

[0142] In the above configuration, unevenness in the light emitted from the cylindrical lens 77 in the axial direction is suppressed.

[0143] In this embodiment, a through-hole 772 that penetrates the outer circumferential surface and the inner circumferential surface of the cylindrical lens 77 is provided in a part of the cylindrical lens 77, and light from the light-emitting element 75 may be incident on the inner surface of the through-hole 772.

[0144] In the above configuration, the light emitted from the light emitting element 75 can be incident on the inner surface of the through portion 772 .

[0145] In this embodiment, at least a portion of the light incident on the inner surface of the through portion 772 may propagate inside the cylindrical lens 77 and then be emitted radially outward from the outer circumferential surface of the cylindrical lens 77 .

[0146] In the above configuration, the light emitted from the light-emitting element 75 enters the inner surface of the through-hole 772 of the cylindrical lens 77 and then is emitted from the outer peripheral surface of the cylindrical lens 77, thereby improving the visibility of the notification light-emitting portion 72.

[0147] In this embodiment, the electric operating machine 1 may include a light diffusing lens 76 disposed between the light emitting element 75 and the cylindrical lens 77 .

[0148] In the above configuration, the light diffused by the light diffusing lens 76 enters the cylindrical lens 77 .

[0149] In this embodiment, the light diffusing lens 76 may have an entrance groove 763 provided on an entrance surface 761 facing the light emitting element 75, and an exit groove 764 provided on an exit surface 762 facing the cylindrical lens 77. At least a portion of the light incident on the entrance groove 763 from the light emitting element 75 may be emitted from the exit groove 764 and then enter the cylindrical lens 77.

[0150] In the above configuration, the light diffused by the light diffusing lens 76 enters the cylindrical lens 77 .

[0151] In this embodiment, each of the entrance groove 763 and the exit groove 764 may be elongated in a direction parallel to the central axis of the cylindrical lens 77 .

[0152] In the above configuration, the light diffused by the light diffusing lens 76 enters the cylindrical lens 77 .

[0153] In this embodiment, each of the entrance groove 763 and the exit groove 764 may include a triangular groove. In a cross section perpendicular to the central axis, the angle β of the entrance groove 763 may be smaller than the angle α of the exit groove 764.

[0154] In the above configuration, the light diffused by the light diffusing lens 76 enters the cylindrical lens 77 .

[0155] In this embodiment, the depth Da of the entrance groove 763 may be greater than the depth Db of the exit groove 764 .

[0156] In the above configuration, the light diffused by the light diffusing lens 76 enters the cylindrical lens 77 .

[0157] In this embodiment, the electric operating machine 1 may include a clutch unit 6 disposed between the motor 4 and the output shaft 12, and a clutch case 5 that houses the clutch unit 6. The cylindrical lens 77 may be disposed so as to surround the clutch case 5.

[0158] In the above configuration, the visibility of the notification light-emitting portion 72 is improved.

[0159] In this embodiment, the cylindrical lens 77 may be rotatably supported by the clutch case 5 .

[0160] In the above configuration, the cylindrical lens 77 can be rotated.

[0161] In this embodiment, an opening 84 into which a tool for adjusting the clutch portion 6 can be inserted may be provided in a part of the clutch case 5. The cylindrical lens 77 may be rotatable so as to change between a state in which it covers the opening 84 and a state in which it does not cover the opening 84.

[0162] In the above configuration, the cylindrical lens 77 is used as a cover for covering the opening 84 .

[0163] In this embodiment, the electric operating machine 1 may include a screw 80 that fixes the cylindrical lens 77 to the clutch case 5 with the opening 84 covered by the cylindrical lens 77.

[0164] In the above configuration, the cylindrical lens 77 is used as a cover for covering the opening 84 .

[0165] In this embodiment, the electric operating machine 1 may include a substrate 78 that supports the light emitting element 75, and a substrate holder 79 that holds the substrate 78. A screw 80 may fix the substrate holder 79 and the cylindrical lens 77 to the clutch case 5.

[0166] In the above configuration, the substrate holder 79 and the cylindrical lens 77 are fixed to the clutch case 5 by the screws 80 .

[0167] [Second embodiment] A second embodiment will be described below. In the following description, the same or equivalent components as those in the above-described embodiment are denoted by the same reference numerals, and the description of those components will be simplified or omitted.

[0168] Fig. 24 is a cross-sectional view of an enlarged portion of the notification light-emitting unit 72B according to this embodiment. In the above-described embodiment, the recess 772 provided in the cylindrical lens 77 includes a through-hole. As shown in Fig. 24, the recess 772B may be recessed upward from the lower portion of the outer circumferential surface of the cylindrical lens 77, and may not penetrate the outer circumferential surface and the inner circumferential surface of the cylindrical lens 77. It is sufficient that an inner surface of the recess 772 into which the light from the light-emitting element 75 is incident is provided.

[0169] [Third embodiment] A third embodiment will be described below. In the following description, the same or equivalent components as those in the above-described embodiment are denoted by the same reference numerals, and the description of those components will be simplified or omitted.

[0170] FIG. 25 is a view of the board 78C according to this embodiment as seen from the left. In the above-mentioned embodiment, the detection element 67 for detecting the release state of the clutch portion 6 is arranged on the detection board 66 different from the board 78. As shown in FIG. 25, the detection element 67 may be arranged on the board 78C on which the light-emitting element 73 is arranged. In the example shown in FIG. 25, the light-emitting element 73 is arranged on the lower surface (front surface) of the board 78C, and the detection element 67 is arranged on the upper surface (rear surface) of the board 78C. The detection element 67 is arranged at the same position as at least a part of the magnet 65 arranged at the retreated position in the front-rear direction. Note that, as shown in FIG. 25, the light-emitting element 75 may be arranged on the upper surface of the board 78C. The detection element 67 is arranged behind the light-emitting element 75.

[0171] In the above embodiment, the detection target of the detection element 67 is the clutch unit 6. Specifically, the detection target of the detection element 67 is the magnet 65 that moves in synchronization with the front cam 47 of the clutch unit 6. The detection element 67 is a magnetic sensor such as a Hall IC that can detect the movement of the magnet 65. The detection element 67 may be a photointerrupter. The photointerrupter may detect the movement of the sensor plate 62, for example.

[0172] [Fourth embodiment] A fourth embodiment will be described below. In the following description, the same or equivalent components as those in the above-described embodiment are denoted by the same reference numerals, and the description of those components will be simplified or omitted.

[0173] FIG. 26 is a view of the substrate 78D according to the present embodiment as viewed from the left. As shown in FIG. 26, the sound output element 70, which is an example of a notification element, may be disposed on the substrate 78D on which the light-emitting element 73 is disposed. In the example shown in FIG. 26, the light-emitting element 73 is disposed on the lower surface (front surface) of the substrate 78D, and the sound output element 70 is disposed on the upper surface (rear surface) of the substrate 78D. In the example shown in FIG. 26, the light-emitting element 75 is disposed on the upper surface of the substrate 78D together with the sound output element 70. The light-emitting element 75 is also an example of a notification element. The light-emitting element 75 emits notification light. Note that the light-emitting element 73 may be omitted from the substrate 78D. The light-emitting element 75 may be disposed on the upper surface of the substrate 78D, and the sound output element 70 may be disposed on the lower surface of the substrate 78D.

[0174] [Fifth embodiment] A fifth embodiment will be described below. In the following description, the same or equivalent components as those in the above-described embodiment are denoted by the same reference numerals, and the description of those components will be simplified or omitted.

[0175] FIG. 27 is a view of the substrate 78E according to the present embodiment as seen from the left. As shown in FIG. 28, a vibration element 85, which is an example of a notification element, may be disposed on the substrate 78E on which the light-emitting element 73 is disposed. The vibration element 85 generates notification vibration. An example of the vibration element 85 is a piezo element. In the example shown in FIG. 27, the light-emitting element 73 is disposed on the lower surface (front surface) of the substrate 78E, and the vibration element 85 is disposed on the upper surface (rear surface) of the substrate 78E. In the example shown in FIG. 27, the light-emitting element 75 is disposed on the upper surface of the substrate 78E together with the vibration element 85. The light-emitting element 75 is also an example of a notification element. The light-emitting element 75 emits notification light. Note that the light-emitting element 73 may be omitted from the substrate 78E. The light-emitting element 75 may be disposed on the upper surface of the substrate 78E, and the vibration element 85 may be disposed on the lower surface of the substrate 78E.

[0176] [Sixth embodiment] A sixth embodiment will be described below. In the following description, the same or equivalent components as those in the above-described embodiments are denoted by the same reference numerals, and the description of those components will be simplified or omitted.

[0177] FIG. 28 is a view of the substrate 78F according to this embodiment as seen from the left. As shown in FIG. 28, the external connection terminal 68 may be disposed on the substrate 78F on which the light emitting element 73 is disposed. The external connection terminal 68 is connected to an external device. An example of the external connection terminal 68 is a universal serial bus (USB) terminal. In the example shown in FIG. 28, the light emitting element 73 is disposed on the lower surface (front surface) of the substrate 78F, and the external connection terminal 68 is disposed on the upper surface (rear surface) of the substrate 78F. In the example shown in FIG. 28, the light emitting element 75 is disposed on the upper surface of the substrate 78F together with the external connection terminal 68. Note that the light emitting element 73 may be omitted from the substrate 78F. The light emitting element 75 may be disposed on the upper surface of the substrate 78F, and the external connection terminal 68 may be disposed on the lower surface of the substrate 78F.

[0178] The external connection terminal 68 is not limited to a USB terminal, and may be a communication terminal capable of wireless communication with an external device.

[0179] [Seventh embodiment] A seventh embodiment will be described below. In the following description, the same or equivalent components as those in the above-described embodiment are denoted by the same reference numerals, and the description of those components will be simplified or omitted.

[0180] Fig. 29 is a view of the substrate 78G according to this embodiment as viewed from the left. As shown in Fig. 29, the detection element 67 and the external connection terminal 68 may be arranged on one substrate 78G. In the example shown in Fig. 29, the detection element 67 is arranged on the upper surface of the substrate 78G, and the external connection terminal 68 is arranged on the upper surface of the substrate 78G. Note that one or both of the light-emitting element 73 and the light-emitting element 75 described in the above embodiment may be arranged on the substrate 78G.

[0181] [Eighth embodiment] An eighth embodiment will be described below. In the following description, the same or equivalent components as those in the above-described embodiments are denoted by the same reference numerals, and the description of those components will be simplified or omitted.

[0182] FIG. 30 is a view of the substrate 78H according to this embodiment as seen from the left. As shown in FIG. 30, a detection element 67, an external connection terminal 68, and a sound output element 70, which is an example of a notification element, may be arranged on one substrate 78H. In the example shown in FIG. 30, the detection element 67 is arranged on the upper surface of the substrate 78H, and the external connection terminal 68 and the sound output element 70 are arranged on the upper surface of the substrate 78H. Note that a vibration element 85 may be arranged on the substrate 78H instead of or together with the sound output element 70. One or both of the light-emitting element 73 and the light-emitting element 75 described in the above embodiment may be arranged on the substrate 78H.

[0183] [Ninth embodiment] A ninth embodiment will be described below. In the following description, the same or equivalent components as those in the above-described embodiment are denoted by the same reference numerals, and the description of those components will be simplified or omitted.

[0184] Fig. 31 is a perspective view of the electric working machine 1J according to this embodiment from the upper left rear. Fig. 32 is a view of the electric working machine 1J according to this embodiment seen from the left. Fig. 33 is a vertical cross-sectional view of the electric working machine 1J according to this embodiment. Fig. 34 is a vertical cross-sectional view of the front part of the electric working machine 1J according to this embodiment.

[0185] In the above-described embodiment, the electric working machine 1 is an angle screwdriver. As shown in Fig. 31 to Fig. 34, the electric working machine 1J may be a so-called pistol-type screwdriver. In the electric working machine 1J, the rotation axis AX of the motor 4J and the rotation axis of the output shaft 12J coincide with each other.

[0186] The electric work machine 1 includes a main body housing 2J, a clutch case 5J, a front housing 10J, a controller 15J, a sound output element 70J, a trigger lever 19J, a forward / reverse rotation switch button 20J, a motor 4J, a reduction mechanism unit 53J, a clutch unit 6J, a spindle 48J, an output shaft 12J, and a tool holding mechanism 86.

[0187] The main body housing 2J has a motor accommodating portion 3J, a grip portion 7J arranged below the motor accommodating portion 3J, and a battery attachment portion 8J arranged below the grip portion 7J.

[0188] The clutch case 5J is a cylindrical member disposed in front of the motor housing portion 3J. The clutch case 5J houses the clutch portion 6J.

[0189] The front housing 10J is a cylindrical member disposed in front of the clutch case 5J. The front housing 10J accommodates at least a portion of the output shaft 12J.

[0190] The battery pack 13J is a power source for the electric work machine 1J. The battery mounting portion 8J holds a terminal block 14J that is electrically connected to the battery pack 13J.

[0191] The controller 15J controls at least the motor 4J. The controller 15J is housed in the battery mounting section 8J.

[0192] The trigger lever 19J protrudes forward from the upper front portion of the grip portion 7J and is connected to a trigger switch 18J.

[0193] The forward / reverse switching button 20J protrudes from an upper portion of the grip portion 7 in the left-right direction.

[0194] The motor 4J is a power source for the electric work machine 1J. The motor 4J is an inner rotor type brushless motor.

[0195] The rotor shaft 26J extends in the front-rear direction. A front portion of the rotor shaft 26J is rotatably supported by a bearing 36J. A rear portion of the rotor shaft 26J is rotatably supported by a bearing 37J. A centrifugal fan 38J is fixed to the rear portion of the rotor shaft 26J. A front end portion of the rotor shaft 26J is coupled to a reduction mechanism unit 53J.

[0196] The clutch portion 6J operates to change between an engaged state in which the rotational force of the motor 4J transmitted via the reduction mechanism portion 53J is transmitted to the output shaft 12J, and a released state in which the transmission of the rotational force of the motor 4J to the output shaft 12 is interrupted.

[0197] The output shaft 12J rotates about a rotation axis extending in the front-rear direction. The output shaft 12J is rotatably supported by a bearing 60J. The front end of the output shaft 12 protrudes forward from the front housing 10J. The output shaft 12J has a tool hole extending rearward from the front end of the output shaft 12J. The tool holding mechanism 86 holds a driver bit inserted in the tool hole.

[0198] Like the electric operating machine 1 described in the above embodiment, the electric operating machine 1J has an illumination light-emitting section 71 and a notification light-emitting section 72.

[0199] [Other embodiments] In the above embodiment, the electric working machine is a screwdriver, which is a type of power tool. The electric working machine may be at least one of a driver drill, an angle drill, an impact driver, a grinder, a hammer, a hammer drill, a circular saw, and a reciprocating saw, which are types of power tools. The electric working machine may also be a gardening tool (Outdoor Power Equipment). Examples of gardening tools include a chainsaw, a hedge trimmer, a lawn mower, a grass cutter, and a blower.

[0200] In the above-described embodiment, the power source of the electric operating machine does not have to be a battery pack, and may be a commercial power source (AC power source). [Explanation of symbols]

[0201] 1...electrical work machine, 1J...electrical work machine, 2...main body housing, 2A...left half housing, 2B...right half housing, 2J...main body housing, 3...motor housing, 3J...motor housing, 4...motor, 4J...motor, 5...clutch case, 5J...clutch case, 6...clutch section, 6J...clutch section, 7...grip section, 7J...grip section, 8...battery mounting section, 8J...battery mounting section, 9...screw, 10...front housing, 10J...front housing, 11...output section, 12...output shaft, 12J...output shaft, 13...battery pack, 13J...battery pack, 1 4...terminal block, 14J...terminal block, 15...controller, 15J...controller, 16...control circuit board, 17...case, 18...trigger switch, 18J...trigger switch, 19...trigger lever, 19J...trigger lever, 20...forward / reverse rotation switch button, 20J...forward / reverse rotation switch button, 21...stator, 22...rotor, 23...stator core, 24...insulator, 25...coil, 26...rotor shaft, 26J...rotor shaft, 27...rotor core, 28...permanent magnet, 29...permanent magnet for sensor, 30...sensor circuit board, 31...screw, 32...terminal unit, 33...front wall, 3 4...rear rib, 35...bearing holder, 36...bearing, 36J...bearing, 37...bearing, 37J...bearing, 38...centrifugal fan, 38J...centrifugal fan, 39...intake port, 40...exhaust port, 41...pinion gear, 42...internal gear, 43...carrier, 44...planetary gear, 45...rear cam, 46...cam ball, 47...front cam, 48...spindle, 48J...spindle, 49...cam groove, 50...ball, 51...spring support, 52...coil spring, 53...reduction mechanism, 53J...reduction mechanism, 54...threaded portion, 55...bent tube portion, 56...threaded sleeve, 57...intermediate shaft, 58...bevel gear, 59...bearing, 60...bearing, 60J...bearing, 61...bevel gear, 62...sensor plate, 63...coil spring, 64...engagement piece, 65...magnet, 66...detection board, 67...detection element, 68...external connection terminal, 69...cover, 70...sound output element, 70J...sound output element, 71...illumination light-emitting section (first light-emitting section), 72...notification light-emitting section (second light-emitting section), 72B...notification light-emitting section, 73...light-emitting element (first light-emitting element), 74...transmitting lens (first lens), 75...light-emitting element (second light-emitting element), 76...light diffusion lens, 77...cylindrical lens (second lens), 78...substrate, 78C...substrate,78D...substrate, 78E...substrate, 78F...substrate, 78G...substrate, 78H...substrate, 79...substrate holder, 80...screw, 81...screw, 82...screw hole, 83...screw hole, 84...opening, 85...vibration element, 86...tool holding mechanism, 741...bent portion, 742...flat portion, 761...entrance surface, 762...exit surface, 763...entrance groove portion, 764...exit groove portion, 771...entrance portion, 772...through portion (recess), 772B...recess, 773...screw through hole, 781...screw through hole, 791...screw through hole, 792...screw through hole, 793...opening, α...angle, β...angle, Da...depth, Db...depth, La...dimension, Wa...dimension. ,

Claims

1. A motor; a tool holding unit that rotates by a rotational force generated by the motor; a first light-emitting unit having a first light-emitting element; a second light-emitting unit having a second light-emitting element; a substrate, the first light emitting element is disposed on a surface of the substrate; The second light emitting element is disposed on the back surface of the substrate. Electric work equipment.

2. The first light-emitting unit emits illumination light that illuminates at least the tool held by the tool holding unit. The electric operating machine according to claim 1 .

3. The second light emitting unit emits notification light that notifies at least a working state. The electric operating machine according to claim 1 .

4. the first light-emitting unit emits illumination light that illuminates at least the tool held by the tool holding unit, The second light emitting unit emits notification light that notifies at least a working state. The electric operating machine according to claim 1 .

5. a clutch unit disposed between the motor and the tool holder; a clutch case that houses the clutch portion, The substrate is fixed to the clutch case. The electric operating machine according to claim 1 .

6. a substrate holder for holding the substrate; a screw for fixing the substrate holder to the clutch case, The substrate is fixed to the clutch case via the substrate holder. The electric operating machine according to claim 5.

7. the first light-emitting unit has a first lens through which light from the first light-emitting element passes; the first lens is held by the substrate holder; The electric operating machine according to claim 6.

8. a plurality of the first light-emitting elements are arranged in a direction parallel to the rotation shaft of the motor; The electric operating machine according to claim 1 .

9. a clutch unit disposed between the motor and the tool holder; a clutch case that houses the clutch portion, the second light-emitting unit has a second lens through which light from the second light-emitting element passes, The second lens is cylindrical and is disposed so as to surround the clutch case. The electric operating machine according to claim 1 .

10. a screw for fixing the second lens to the clutch case; The electric operating machine according to claim 9.

11. a substrate holder for holding the substrate; the screws fix the substrate holder and the second lens to the clutch case; The electric operating machine according to claim 10.

12. a plurality of the second light-emitting elements are arranged in a direction parallel to the rotation shaft of the motor; The electric operating machine according to claim 1 .

13. A motor; a tool holding unit that rotates by a rotational force generated by the motor; A light-emitting element; a detection target portion; a detection element for detecting the detection target portion; a substrate, the light-emitting element is disposed on a surface of the substrate; The detection element is disposed on the back surface of the substrate. Electric work equipment.

14. a clutch unit disposed between the motor and the tool holding unit, the detection target portion is the clutch portion, The detection element detects a release state of the clutch portion. The electric operating machine according to claim 13.

15. the detection target portion includes a magnet that moves in synchronization with the clutch portion, The detection element includes a magnetic sensor that detects the magnet. The electric operating machine according to claim 14.

16. A motor; a tool holding unit that rotates by a rotational force generated by the motor; A light-emitting element; a notification element; a substrate, the light-emitting element is disposed on a surface of the substrate; The notification element is disposed on the back surface of the substrate. Electric work equipment.

17. The notification element notifies at least the working state. The electric operating machine according to claim 16.

18. The notification element includes a light-emitting element that emits notification light. The electric operating machine according to claim 16.

19. The notification element includes a sound output element that outputs a notification sound. The electric operating machine according to claim 16.

20. The notification element includes a vibration element that generates a notification vibration. The electric operating machine according to claim 16.

21. A motor; a tool holding unit that rotates by a rotational force generated by the motor; A light-emitting element; an external connection terminal to be connected to an external device; a substrate, the light-emitting element is disposed on a surface of the substrate; The external connection terminals are disposed on the rear surface of the substrate. Electric work equipment.

22. the external connection terminal includes a universal serial bus terminal; The electric operating machine according to claim 21.

23. A motor; a tool holding unit that rotates by a rotational force generated by the motor; a light-emitting element for notification; a detection target portion; a detection element for detecting the detection target portion; a substrate, The notification light emitting element is disposed on the substrate, the detection element is disposed on the substrate; the detection target includes a magnet, The detection element includes a magnetic sensor that detects the magnet. Electric work equipment.

24. a lens through which light from the notification light emitting element passes; 24. The electric operating machine according to claim 23.

25. an output shaft that is disposed forward of the motor in a front-rear direction parallel to a rotation shaft of the motor and that holds a driver bit; the lens is disposed between the motor and the output shaft in the front-rear direction; 25. The electric operating machine according to claim 24.

26. The light emitted from the notification light-emitting element is emitted radially outward from an outer surface of the lens facing radially outward from the rotation shaft.

26. The electric operating machine according to claim 25.

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