JP2022092928A - Electric work machine - Google Patents

Abstract

To provide an electric work machine that can suppress deterioration in visibility of a light emission part in an electric work machine provided with the light emission part.SOLUTION: An electric work machine includes: a motor including a stator and a rotor rotating relative to the stator; an output part driven by the rotor; a light-emitting device 47; and a diffusion optical member 35 including an incident surface and an emission surface 352, diffusing light incident upon the incident surface from the light-emitting device and emitting light from the emission surface.SELECTED DRAWING: Figure 8

Description

The present disclosure relates to an electric working machine.

In the technical field related to electric work machines, electric tools having a light emitting portion as disclosed in Patent Document 1 are known.

Japanese Unexamined Patent Publication No. 2018-094651

It is desired to improve the visibility of the light emitting part. For example, it is required that the operator can clearly see the light emitting portion from various directions.

An object of the present disclosure is to suppress a decrease in visibility of a light emitting unit when the electric working machine is provided with a light emitting unit.

According to the present disclosure, it has a stator and a motor having a rotor that rotates with respect to the stator, an output unit driven by the rotor, a light emitting element, an incident surface and an ejection surface, and is incident on the incident surface from the light emitting element. Provided is an electric working machine comprising a diffused optical member that diffuses the emitted light and emits it from an injection surface.

According to the present disclosure, when the electric working machine is provided with the light emitting unit, the deterioration of the visibility of the light emitting unit is suppressed.

FIG. 1 is a perspective view from the left front showing the screw tightening machine according to the embodiment. FIG. 2 is a perspective view from the right rear showing the screw tightening machine according to the embodiment. FIG. 3 is a side view showing a screw tightening machine according to an embodiment. FIG. 4 is a cross-sectional view showing a screw tightening machine according to an embodiment. FIG. 5 is a rear view of the rear cover unit according to the embodiment. FIG. 6 is an exploded perspective view from the right rear showing the screw tightening machine according to the embodiment. FIG. 7 is a perspective view from the right rear showing the rear cover unit according to the embodiment. FIG. 8 is an exploded perspective view from the right rear showing the rear cover unit according to the embodiment. FIG. 9 is a perspective view from the right front showing the rear cover unit according to the embodiment. FIG. 10 is an exploded perspective view from the front right showing the rear cover unit according to the embodiment. FIG. 11 is a rear view of the operating member according to the embodiment. FIG. 12 is an exploded perspective view from the right rear showing the rear cover unit according to the embodiment. FIG. 13 is an exploded perspective view from the front right showing the rear cover unit according to the embodiment. FIG. 14 is a front view of the diffusion optical member according to the embodiment. FIG. 15 is a perspective view from below showing the diffusion optical member according to the embodiment. FIG. 16 is a perspective view from the right rear showing the diffusion optical member according to the embodiment. FIG. 17 is a diagram showing the relationship between the diffusion optical member and the light emitting element according to the embodiment. FIG. 18 is a perspective view from below showing the cover member according to the embodiment. FIG. 19 is a perspective view from the right rear showing the cover member according to the embodiment. FIG. 20 is an exploded perspective view from the right rear showing the display panel and the holding member according to the embodiment. FIG. 21 is an exploded perspective view from the right front showing the display panel and the holding member according to the embodiment. FIG. 22 is a side view showing a connection structure between the holding member and the interface controller according to the embodiment. FIG. 23 is an exploded perspective view from the right rear showing the connection structure between the holding member and the interface controller according to the embodiment. FIG. 24 is an exploded perspective view from the right front showing the connection structure between the holding member and the interface controller according to the embodiment. FIG. 25 is a diagram showing the relationship between the state of the screw tightening machine and the light emitting state of the notification light emitting unit according to the embodiment. FIG. 26 is a diagram showing a screen transition diagram of the display unit according to the embodiment.

Hereinafter, embodiments according to the present disclosure will be described with reference to the drawings, but the present disclosure is not limited to the embodiments. The components of the embodiments described below can be combined as appropriate. In addition, some components may not be used.

In the embodiment, the positional relationship of each part will be described using the terms “left”, “right”, “front”, “rear”, “top”, and “bottom”. These terms refer to a relative position or direction with respect to the center of the screw tightening machine 1.

The screw tightening machine 1 is an electric working machine powered by an electric motor. The screw tightening machine 1 is an electric tool which is a kind of electric working machine. The direction parallel to the rotation axis AX of the electric motor is appropriately referred to as an axial direction. The direction that orbits around the rotation axis AX is appropriately referred to as a circumferential direction or a rotation direction. The radial direction of the rotation axis AX is appropriately referred to as a radial direction.

The rotation axis AX extends in the front-rear direction. The axial direction and the front-back direction coincide. One side in the axial direction is the front and the other side in the axial direction is the rear. In the radial direction, the position close to or close to the rotation axis AX is appropriately referred to as the inside in the radial direction, and the position far from or away from the rotation axis AX is appropriately referred to as the outside in the radial direction.

The left-right direction (second direction), the front-back direction (first direction), and the up-down direction (third direction) are orthogonal to each other.

[Screw tightening machine]
FIG. 1 is a perspective view from the left front showing the screw tightening machine 1 according to the embodiment. FIG. 2 is a perspective view from the right rear showing the screw tightening machine 1 according to the embodiment. FIG. 3 is a side view showing the screw tightening machine 1 according to the embodiment. FIG. 4 is a cross-sectional view showing the screw tightening machine 1 according to the embodiment.

The screw tightening machine 1 is an industrial electric screwdriver used in a product assembly factory. In the product assembly process, the screw tightening work is carried out by the screw tightening machine 1. An automobile assembly factory is exemplified as an assembly factory. An automobile is exemplified as a product.

As shown in FIGS. 1, 2, 3, and 4, the screw tightening machine 1 includes a housing 2, a gear case 3, a battery mounting portion 4, a motor 5, a bearing box 6, and a planetary gear mechanism 7. The output unit 8, the torque sensor 9, the fan 10, the trigger switch 11, the forward / reverse switching lever 12, the sound generation unit 13, the light emitting unit 14, the main controller 15, and the rear cover unit 100 are provided. ..

The housing 2 is made of synthetic resin. The housing 2 includes a left housing 2L and a right housing 2R. The left housing 2L and the right housing 2R are fixed by screws 2S. The housing 2 is formed by fixing the left housing 2L and the right housing 2R.

The housing 2 has a motor accommodating portion 21, a grip portion 22, and a controller accommodating portion 23.

The motor accommodating portion 21 accommodates the motor 5. The motor accommodating portion 21 has a tubular portion extending in the front-rear direction. The motor accommodating portion 21 is arranged above the grip portion 22.

The grip portion 22 is gripped by an operator's hand. The grip portion 22 is arranged below the motor accommodating portion 21. The grip portion 22 extends downward from the motor accommodating portion 21. The trigger switch 11 is arranged on the grip portion 22.

The controller accommodating unit 23 accommodates the main controller 15. The controller accommodating portion 23 is arranged below the grip portion 22. The controller accommodating portion 23 is connected to the lower end portion of the grip portion 22. The outer dimensions of the controller accommodating portion 23 are larger than the outer dimensions of the grip portion 22 in each of the front-rear direction and the left-right direction.

The gear case 3 houses a bearing box 6, a torque sensor 9, a planetary gear mechanism 7, and a part of the output unit 8. The gear case 3 is arranged in front of at least a part of the motor 5. The gear case 3 has a cylindrical shape. The gear case 3 is made of metal. In the embodiment, the gear case 3 is made of aluminum. The gear case 3 is arranged so as to cover the opening at the front portion of the motor accommodating portion 21. The gear case 3 is fixed to the motor accommodating portion 21. The rear portion of the gear case 3 is arranged inside the motor accommodating portion 21. At least a part of the motor accommodating portion 21 is arranged around the gear case 3. The front portion of the gear case 3 is arranged in front of the motor accommodating portion 21.

The battery mounting portion 4 is provided at the lower part of the controller accommodating portion 23. The battery pack 16 can be connected to the battery mounting portion 4. The battery pack 16 is mounted on the battery mounting portion 4. The battery pack 16 is removable from the battery mounting portion 4. The battery pack 16 includes a secondary battery. In an embodiment, the battery pack 16 includes a rechargeable lithium-ion battery. By being mounted on the battery mounting portion 4, the battery pack 16 can supply electric power to the screw tightening machine 1. The motor 5 is driven based on the electric power supplied from the battery pack 16. Each of the main controller 15 and the rear cover unit 100 operates based on the electric power supplied from the battery pack 16.

The motor 5 is a power source for the screw tightening machine 1. The motor 5 is an electric motor. The motor 5 is an inner rotor type brushless motor. The motor 5 is housed in the motor housing section 21.

The motor 5 has a stator 51 and a rotor 52. The stator 51 is arranged around the rotor 52. The rotor 52 rotates with respect to the stator 51. The rotor 52 rotates about the rotation axis AX. The gear case 3 is arranged in front of the stator 51.

The stator 51 includes a stator core 51A, a front insulator 51B, a rear insulator 51C, a coil 51D, and a sensor substrate 51E.

The stator core 51A has a cylindrical shape. The stator core 51A includes a plurality of laminated steel plates. The front insulator 51B is fixed to the front portion of the stator core 51A. The rear insulator 51C is fixed to the rear portion of the stator core 51A. A plurality of coils 51D are provided. The plurality of coils 51D are wound around the teeth of the stator core 51A via the front insulator 51B and the rear insulator 51C. The sensor substrate 51E has a plurality of detection elements for detecting the rotation of the rotor 52. The sensor substrate 51E is supported by the rear insulator 51C. The fusing terminals are connected to the plurality of coils 51D.

The rotor 52 has a rotor core 52A, a permanent magnet 52B, and a rotor shaft 53.

The rotor core 52A is arranged inside the stator core 51A and the coil 51D. The rotor core 52A has a cylindrical shape. The rotor core 52A is arranged around the rotor shaft 53. The rotor core 52A is fixed to the rotor shaft 53. The rotor core 52A includes a plurality of laminated steel plates. A plurality of permanent magnets 52B are provided. The permanent magnet 52B is held by the rotor core 52A. The rotor core 52A has a through hole extending in the front-rear direction. A plurality of through holes are formed in the circumferential direction. The permanent magnet 52B is arranged in each of the plurality of through holes of the rotor core 52A.

The detection element of the sensor substrate 51E detects the rotation of the rotor 52 by detecting the magnetic fields of the plurality of permanent magnets 52B. The main controller 15 supplies a drive current to the coil 51D based on the detection signal of the detection element.

The rotor shaft 53 extends in the front-rear direction. The rotor shaft 53 rotates about the rotation shaft AX. The rotation axis AX of the rotor shaft 53 coincides with the rotation axis of the output unit 8.

At least a part of the rotor 52 is supported by the bearing 54. At least a part of the rotor 52 is supported by the bearing 55. In the front-rear direction, the bearing 54 is arranged between the front end of the stator 51 and the rear end of the torque sensor 9. The bearing 54 rotatably supports the front portion of the rotor shaft 53. The bearing 54 supports a part of the rotor shaft 53 in front of the stator 51. In the front-rear direction, the bearing 55 is arranged behind the rear end of the stator 51. The bearing 55 rotatably supports the rear portion of the rotor shaft 53. The bearing 55 supports a part of the rotor shaft 53 behind the stator 51.

The bearing box 6 supports the bearing 54. The bearing box 6 is arranged around the bearing 54. The bearing box 6 is housed in the gear case 3. The bearing box 6 is fixed to the gear case 3.

The bearing 55 is held by the bearing holding portion 57 provided in the motor accommodating portion 21.

The front end 53A of the rotor shaft 53 is arranged in front of the bearing 54. The front end portion 53A of the rotor shaft 53 is arranged inside the gear case 3.

The pinion gear 71S is mounted on the front end portion 53A of the rotor shaft 53. The rotor shaft 53 is connected to the planetary gear mechanism 7 via the pinion gear 71S.

The planetary gear mechanism 7 is housed in the gear case 3. The planetary gear mechanism 7 is arranged in front of the torque sensor 9. The planetary gear mechanism 7 connects the rotor shaft 53 and the output unit 8. The planetary gear mechanism 7 slows down the rotation of the rotor shaft 53 and rotates the output unit 8 at a rotation speed lower than that of the rotor shaft 53. The planetary gear mechanism 7 functions as a power transmission mechanism that transmits the rotational force generated by the motor 5 to the output unit 8.

The planetary gear mechanism 7 has a planetary gear 71P, a carrier 71C, a sun gear 72S, a planetary gear 72P, a carrier 72C, and an internal gear 70. Each of the planetary gear 71P, the carrier 71C, the sun gear 72S, the planetary gear 72P, the carrier 72C, and the internal gear 70 is housed in the gear case 3.

A plurality of planetary gears 71P are provided. A plurality of planetary gears 71P are arranged around the pinion gear 71S. In the embodiment, three planetary gears 71P are arranged around the pinion gear 71S. Each of the plurality of planetary gears 71P meshes with the pinion gear 71S. Each of the plurality of planetary gears 71P meshes with the internal gear 70.

The carrier 71C rotatably supports a plurality of planetary gears 71P.

The sun gear 72S is arranged in front of the carrier 71C. The diameter of the sun gear 72S is smaller than the diameter of the carrier 71C. The carrier 71C and the sun gear 72S are integrated. The carrier 71C and the sun gear 72S rotate together.

A plurality of planetary gears 72P are provided. A plurality of planetary gears 72P are arranged around the sun gear 72S. In the embodiment, four planetary gears 72P are arranged around the sun gear 72S. Each of the plurality of planetary gears 72P meshes with the sun gear 72S. In the radial direction, the planetary gear 72P is arranged between the sun gear 72S and the internal gear 70.

The carrier 72C rotatably supports a plurality of planetary gears 72P. The carrier 72C is connected to the output unit 8. The carrier 72C can rotate about the rotation axis AX.

The internal gear 70 is substantially cylindrical. The internal gear 70 is arranged around the plurality of planetary gears 72P. The internal gear 70 meshes with each of the plurality of planetary gears 72P. The inner peripheral surface of the gear case 3 and the outer peripheral surface of the internal gear 70 face each other. In the embodiment, the internal gear 70 is rotatable with respect to the gear case 3. The internal gear 70 is connected to the torque sensor 9.

Inside the internal gear 70, a washer 73 is arranged behind the planetary gear 71P. The washer 73 is arranged so as to surround the pinion gear 71S.

An elastic member 74 is arranged inside the gear case 3. The elastic member 74 has a ring shape. As the elastic member 74, a rubber O-ring is exemplified. The elastic member 74 is arranged in a groove provided on the inner peripheral surface of the gear case 3. The rear end surface of the internal gear 70 comes into contact with the elastic member 74.

In the radial direction, the elastic member 75 is arranged between the gear case 3 and the internal gear 70. The elastic member 75 has a ring shape. As the elastic member 75, a rubber O-ring is exemplified. The elastic member 75 is arranged in a groove provided on the outer peripheral surface of the internal gear 70. The inner peripheral surface of the gear case 3 comes into contact with the elastic member 75. In the embodiment, two elastic members 75 are arranged in the front-rear direction.

The pinion gear 71S is connected to the planetary gear 72P via the planetary gear 71P, the carrier 71C, and the sun gear 72S. Each of the planetary gear 72P and the carrier 72C is rotated by the rotor 52. The planetary gear 71P is connected to the internal gear 70 via the carrier 71C, the sun gear 72S, and the planetary gear 72P.

When the rotor shaft 53 is rotated by the drive of the motor 5, the pinion gear 71S rotates, and the planetary gear 71P revolves around the pinion gear 71S. Due to the revolution of the planetary gear 71P, the carrier 71C and the sun gear 72S rotate at a rotation speed lower than the rotation speed of the rotor shaft 53. When the sun gear 72S rotates, the planetary gear 72P revolves around the sun gear 72S. Due to the revolution of the planetary gear 72P, the carrier 72C rotates at a rotation speed lower than the rotation speed of the carrier 71C. In this way, when the motor 5 is driven, the carrier 72C rotates at a rotation speed lower than that of the rotor shaft 53.

The output unit 8 is driven by the rotor 52. The output unit 8 rotates based on the rotational force transmitted from the rotor 52 via the planetary gear mechanism 7. The output unit 8 rotates about the rotation axis AX. The output unit 8 is arranged in front of the stator 51. At least a part of the output unit 8 is arranged in front of the planetary gear mechanism 7. A bit (tip tool) is attached to the output unit 8. The output unit 8 rotates with the bit attached.

The output unit 8 includes a spindle 81 and a chuck 82.

The spindle 81 rotates about the rotation shaft AX based on the rotational force transmitted from the rotor 52. The spindle 81 is rotatably supported by bearings 83 and 84. The spindle 81 is connected to the carrier 72C. Due to the rotation of the carrier 72C, the spindle 81 rotates about the rotation axis AX. The spindle 81 has an insertion hole 81A into which a bit is inserted. The insertion hole 81A is formed so as to extend rearward from the front end portion of the spindle 81. The cross section of the insertion hole 81A orthogonal to the rotation axis AX is hexagonal. The cross section of the bid is also hexagonal. By inserting the bit having a hexagonal cross section into the insertion hole 81A having a hexagonal cross section, the bit is fixed to the spindle 81 in the circumferential direction. The chuck 82 is arranged around the front portion of the spindle 81. The chuck 82 prevents the bit from coming out of the insertion hole 81A. A recess is provided on the side surface of the bit. The chuck 82 has a ball 82A that is disposed in the recess of the bit. By arranging the ball 82A of the chuck 82 in the recess of the bit while the bit is inserted into the insertion hole 81A, it is possible to prevent the bit from coming out of the insertion hole 81A. As the spindle 81 rotates, the bit inserted in the insertion hole 81A rotates.

The torque sensor 9 is a detection unit that detects the presence or absence of an abnormality in work by the output unit 8. The torque sensor 9 is connected to the output unit 8. In the embodiment, the work by the output unit 8 includes a screw tightening work. In the embodiment, the torque sensor 9 detects the torque applied to the output unit 8 in the screw tightening operation. The detection signal output from the torque sensor 9 indicates the torque applied to the output unit 8. The screw tightening work is carried out in a state where the bit is attached to the output unit 8. The torque detected by the torque sensor 9 includes the tightening torque of the screw applied to the output unit 8 in the screw tightening operation.

The torque sensor 9 is housed in the gear case 3. In the front-rear direction, the torque sensor 9 is arranged between the stator 51 and the output unit 8. In the embodiment, the torque sensor 9 is arranged between the fan 10 and the planetary gear mechanism 7.

The torque sensor 9 has a cylindrical shape. The torque sensor 9 is arranged around the rotor shaft 53. The front end portion 53A of the rotor shaft 53 is arranged in front of the front end portion of the torque sensor 9. The front end portion of the pinion gear 71S is arranged in front of the front end portion of the torque sensor 9. The fan 10 and the motor 5 are arranged behind the rear end portion of the torque sensor 9.

The torque sensor 9 has a hollow portion 90, a front plate portion 91, a rear plate portion 92, and a strain gauge 93.

The hollow portion 90 has a cylindrical shape. In the front-rear direction, the hollow portion 90 is arranged between the front plate portion 91 and the rear plate portion 92. The central axis of the hollow portion 90 and the rotation axis AX coincide with each other. The hollow portion 90 is arranged around the rotor shaft 53.

The front plate portion 91 is fixed to the front end portion of the hollow portion 90. The front plate portion 91 and the hollow portion 90 are integrated. The front plate portion 91 is substantially annular. The central axis of the front plate portion 91 and the rotation axis AX coincide with each other. The front plate portion 91 is arranged around the rotor shaft 53. At least a part of the pinion gear 71S mounted on the rotor shaft 53 is arranged in front of the front end portion of the front plate portion 91. The outer diameter of the front plate portion 91 is larger than the outer diameter of the hollow portion 90. A gear 91G is provided on the outer peripheral surface of the front plate portion 91.

The front plate portion 91 is coupled to the internal gear 70. At least a part of the internal gear 70 is arranged around the front plate portion 91. The front plate portion 91 and the internal gear 70 are coupled to each other by engaging each of the gear 91G of the front plate portion 91 and the plurality of teeth of the internal gear 70. The front plate portion 91 and the internal gear 70 are fixed in the rotation direction. The torque sensor 9 is connected to the internal gear 70 via the front plate portion 91. As described above, the carrier 72C is connected to the output unit 8. The torque sensor 9 is connected to the output unit 8 via the planetary gear mechanism 7.

The rear plate portion 92 is arranged behind the front plate portion 91. The rear plate portion 92 is fixed to the rear end portion of the hollow portion 90. The rear plate portion 92 and the hollow portion 90 are integrated. The rear plate portion 92 is substantially annular. The central axis of the rear plate portion 92 and the rotation axis AX coincide with each other. The rear plate portion 92 is arranged around the rotor shaft 53. The outer diameter of the rear plate portion 92 is larger than the outer diameter of the hollow portion 90. The outer diameter of the rear plate portion 92 is larger than the outer diameter of the front plate portion 91.

The rear plate portion 92 is supported by the gear case 3. At least a part of the gear case 3 is arranged around the rear plate portion 92. The rear plate portion 92 is fixed to at least a part of the gear case 3. The gear case 3 is fixed to the housing 2. The rear plate portion 92 is fixed to the housing 2 via the gear case 3.

The torque sensor 9 has a through hole 96 penetrating the front surface of the front plate portion 91 and the rear surface of the rear plate portion 92. At least a part of the through hole 96 is formed inside the hollow portion 90. At least a part of the rotor shaft 53 is arranged inside the through hole 96.

The strain gauge 93 is fixed to the hollow portion 90. The strain gauge 93 outputs a detection signal (voltage) indicating the torque applied to the output unit 8. In the embodiment, the strain gauge 93 is fixed to the outer surface of the hollow portion 90. A plurality of strain gauges 93 are provided. In the embodiment, four strain gauges 93 are arranged in the circumferential direction. The four strain gauges 93 are arranged at equal intervals in the circumferential direction.

The torque applied to the output unit 8 in the screw tightening work is transmitted to the internal gear 70 via the carrier 72C and the planetary gear 72P. The front plate portion 91 of the torque sensor 9 is connected to the internal gear 70, and the rear plate portion 92 of the torque sensor 9 is fixed to at least a part of the gear case 3. Therefore, when torque is applied to the internal gear 70, the hollow portion 90 is twisted in the rotational direction. When the hollow portion 90 is twisted in the rotational direction, the four strain gauges 93 arranged on the surface of the hollow portion 90 are deformed. When the strain gauge 93 is deformed, a detection signal indicating the torque applied to the hollow portion 90 is output from the strain gauge 93. In this way, the torque applied to the output unit 8 is transmitted to the torque sensor 9 via the planetary gear mechanism 7, so that the torque sensor 9 can detect the torque applied to the output unit 8.

In the embodiment, the strain gauge 93 indirectly detects the torque applied to the output unit 8 by detecting the torque applied to the hollow portion 90. When the torque applied to the output unit 8 is large, the detection signal output from the strain gauge 93 becomes large, and when the torque applied to the output unit 8 is small, the detection signal (voltage) output from the strain gauge 93 becomes small.

The fan 10 creates an air flow for cooling the motor 5. In the front-rear direction, the fan 10 is arranged between the stator 51 and the bearing box 6. The fan 10 is fixed to the rotor shaft 53. The fan 10 is rotated by the rotation of the rotor shaft 53. The motor accommodating portion 21 is provided with an intake port 24A and an exhaust port 24B. The intake port 24A is formed so as to connect the internal space and the external space of the motor accommodating portion 21. The exhaust port 24B is formed so as to connect the internal space and the external space of the motor accommodating portion 21. The intake port 24A is provided behind the exhaust port 24B. As the fan 10 rotates, the air in the external space of the housing 2 flows into the internal space of the housing 2 through the intake port 24A. The air that has flowed into the internal space of the housing 2 circulates in the internal space of the housing 2 to cool the motor 5. The air that has flowed through the internal space of the housing 2 flows out to the external space of the housing 2 through the exhaust port 24B.

The trigger switch 11 is operated to start the motor 5. The trigger switch 11 is arranged on the grip portion 22. The trigger switch 11 includes a trigger member 11A and a switch body 11B. The switch body 11B is housed in the grip portion 22. The trigger member 11A projects forward from the upper part of the front portion of the grip portion 22. The trigger member 11A is operated by an operator. By operating the trigger member 11A, the drive and the stop of the motor 5 are switched.

The forward / reverse switching lever 12 is operated to switch the rotation direction of the rotor 52. The forward / reverse switching lever 12 is provided on the upper part of the grip portion 22. The forward / reverse switching lever 12 is operated by an operator. By operating the forward / reverse switching lever 12, the rotation direction of the rotor 52 is switched between the forward rotation direction and the reverse rotation direction. By switching the rotation direction of the rotor 52, the rotation direction of the output unit 8 is switched.

The voice generation unit 13 generates voice based on the detection signal of the torque sensor 9. The voice generation unit 13 includes a buzzer element or a vibration element. The voice generation unit 13 is housed in the motor accommodating unit 21. In the embodiment, at least a part of the voice generation unit 13 is arranged below the gear case 3.

The light emitting unit 14 illuminates the output unit 8 or the front of the output unit 8. The light emitting unit 14 is arranged in front of the motor accommodating unit 21. The light emitting unit 14 emits illumination light forward. The light emitting unit 14 includes, for example, a light emitting diode (LED: Light Emitting Diode).

The main controller 15 includes a computer system. The main controller 15 outputs a control signal for controlling the motor 5. The main controller 15 is housed in the controller housing unit 23. The main controller 15 includes a substrate 15A on which a plurality of electronic components are mounted. At least a part of the main controller 15 is housed in the controller case 15B. Electronic components mounted on the substrate 15A include a processor such as a CPU (Central Processing Unit), a non-volatile memory such as ROM (Read Only Memory) or storage, a volatile memory such as RAM (Random Access Memory), and a transistor. , Condenses, and resistors are exemplified.

[Rear cover unit]
FIG. 5 is a view of the rear cover unit 100 according to the embodiment as viewed from the rear. FIG. 6 is an exploded perspective view from the right rear showing the screw tightening machine 1 according to the embodiment.

The rear cover unit 100 has a user interface function for exchanging data and the like between the operator and the screw tightening machine 1. The rear cover unit 100 includes a cover member 30, a notification light emitting unit 100A, a display unit 100B, an operation unit 100C, and a communication light emitting unit 100D. The rear cover unit 100 is arranged so as to cover the opening provided at the rear portion of the motor accommodating portion 21.

The cover member 30 is fixed to the motor accommodating portion 21 by being sandwiched between the left housing 2L and the right housing 2R. The cover member 30 is arranged so as to cover the opening provided at the rear of the motor accommodating portion 21. The cover member 30 is made of synthetic resin. Nylon resin is exemplified as the synthetic resin forming the cover member 30.

The cover member 30 has a notification opening 31, a display opening 32, an operation opening 33, and a communication opening 34. The notification opening 31 is provided on the upper part of the cover member 30. The notification opening 31 is long in the left-right direction. The display opening 32 is provided in the central portion of the cover member 30. The display opening 32 has a rectangular shape. The operation opening 33 is provided at the lower part of the cover member 30. Four operation openings 33 are provided. The operation opening 33 has a pentagonal shape. The communication opening 34 is provided to the right of the display opening 32 and the operation opening 33. The communication opening 34 has a circular shape.

The notification light emitting unit 100A notifies at least the status of work by the output unit 8 by light. The notification light emitting unit 100A notifies the operator of the work status of the output unit 8 by changing the light emitting state. At least a part of the notification light emitting unit 100A is arranged in the notification opening 31. The function of the notification light emitting unit 100A is not limited to the notification of the work status by the output unit 8.

The display unit 100B displays at least the setting status of the output unit 8. The display unit 100B notifies the operator of the setting status of the output unit 8 using the display data. The display unit 100B notifies the setting status of the output unit 8 by changing the display data to be displayed. At least a part of the display unit 100B is arranged in the display opening 32. The function of the display unit 100B is not limited to the notification of the setting status of the output unit 8.

The operation unit 100C is operated by an operator at least for controlling the display unit 100B. The operation unit 100C is operated to display the display data on the display unit 100B or change the display data displayed on the display unit 100B. In the embodiment, at least a part of the operation unit 100C is arranged in the operation opening 33. The function of the operation unit 100C is not limited to the operation for controlling the display unit 100B.

The communication light emitting unit 100D uses light to notify the communication state of the rear cover unit 100. As shown in FIG. 4, in the embodiment, the rear cover unit 100 has a wireless communication device 1000. The wireless communication device 1000 can carry out short-range wireless communication by a communication method that does not require a wireless license. The wireless communication device 1000 can carry out wireless communication by a communication method conforming to the standard of IEEE 802.15.1 standardized by, for example, the Institute of Electrical and Electronics Engineers (IEEE). The communication light emitting unit 100D notifies that the wireless communication device 1000 is activated by emitting light. At least a part of the communication light emitting unit 100D is arranged in the communication opening 34. Wi-Fi (registered trademark) is exemplified as a communication method of the wireless communication device 1000.

FIG. 7 is a perspective view from the right rear showing the rear cover unit 100 according to the embodiment. FIG. 8 is an exploded perspective view showing the rear cover unit 100 according to the embodiment from the right rear. FIG. 9 is a perspective view from the right front showing the rear cover unit 100 according to the embodiment. FIG. 10 is an exploded perspective view from the front right showing the rear cover unit 100 according to the embodiment.

As shown in FIGS. 7, 8, 9, and 10, the rear cover unit 100 includes a cover member 30, a diffusion optical member 35, a display cover 36, a seal member 37, an operation member 38, and a display panel. A 39, a holding member 40, an optical member 49, an interface controller 41, a spacer 42, a first screw 43, and a second screw 44 are provided.

The interface controller 41 includes a first circuit board 45 and a second circuit board 46. The first circuit board 45 includes a light emitting element 47, a switch element 48, and a light emitting element 50. Two light emitting elements 47 are provided. Four switch elements 48 are provided. One light emitting element 50 is provided.

The rear cover unit 100 is fixed to the motor accommodating portion 21 by being sandwiched between the left housing 2L and the right housing 2R. As shown in FIG. 9, the cover member 30 has a convex portion 330 protruding from the peripheral edge portion of the cover member 30. Four convex portions 330 are provided. The two convex portions 330 project from the left portion of the cover member 30 to the left. The two convex portions 330 are arranged in the vertical direction on the left portion of the cover member 30. The two convex portions 330 project to the right from the right portion of the cover member 30. The two convex portions 330 are arranged in the vertical direction on the right portion of the cover member 30. As shown in FIG. 6, a groove 25 is provided on the inner surface of the motor accommodating portion 21. The convex portion 330 is inserted into the groove 25. Two grooves 25 are provided in the left housing 2L. Two grooves 25 are provided in the right housing 2R. The convex portion 330 provided on the left portion of the cover member 30 is inserted into the groove 25 provided on the left housing 2L. The convex portion 330 provided on the right side of the cover member 30 is inserted into the groove 25 provided on the right housing 2R. When the cover member 30 is fixed to the motor accommodating portion 21, the convex portion 330 on the left side of the cover member 30 is inserted into the groove 25 on the left housing 2L, and the convex portion 330 on the right side of the cover member 30 is the groove on the right housing 2R. In the state of being inserted into 25, the left housing 2L and the right housing 2R are fixed by the screw 2S. As a result, the cover member 30 is sandwiched between the left housing 2L and the right housing 2R and fixed to the motor accommodating portion 21. By inserting the convex portion 330 into the groove 25, the cover member 30 and the motor accommodating portion 21 are positioned. By inserting the convex portion 330 into the groove 25, the cover member 30 is prevented from coming out of the motor accommodating portion 21. Further, the relative rotation between the cover member 30 and the motor accommodating portion 21 is suppressed. The cover member 30 is removable from the motor accommodating portion 21. The cover member 30 is removed from the motor accommodating portion 21 by releasing the fixing between the left housing 2L and the right housing 2R by the screw 2S.

The diffusing optical member 35 diffuses the light from the light emitting element 47. The diffuse optical member 35 is long in the left-right direction. The diffuse optical member 35 has an incident surface 351 and an ejection surface 352. The light emitting element 47 emits light. The light emitting element 47 is arranged so as to face the diffused optical member 35. The light emitting element 47 is arranged in front of the diffused optical member 35. The light from the light emitting element 47 is incident on the incident surface 351. The diffuse optical member 35 diffuses the light incident on the incident surface 351 from the light emitting element 47 and emits it from the injection surface 352. The ejection surface 352 emits the diffused light rearward. The notification light emitting unit 100A includes an injection surface 352 of the diffusion optical member 35.

The diffuse optical member 35 is fixed to the cover member 30. At least a part of the diffuse optical member 35 is arranged in the notification opening 31. The diffusion optical member 35 is made of synthetic resin. Polycarbonate resin is exemplified as the synthetic resin forming the diffusion optical member 35. The light diffusing material may be dispersed in the synthetic resin forming the diffusing optical member 35.

The display cover 36 is arranged so as to cover the display opening 32. The display cover 36 is a transparent sheet-like member.

The display cover 36 is fixed to the cover member 30. The display cover 36 is made of synthetic resin. Polycarbonate resin is exemplified as the synthetic resin forming the display cover 36.

The optical member 49 transmits the light from the light emitting element 50. The light emitting element 50 emits light. The light emitting element 50 is arranged so as to face the optical member 49. The light emitting element 50 is arranged in front of the optical member 49. The light from the light emitting element 50 is incident on the optical member 49. The optical member 49 emits the light incident from the light emitting element 50 rearward. The communication light emitting unit 100D includes an ejection surface of the optical member 49.

The optical member 49 is fixed to the cover member 30. At least a portion of the optical member 49 is arranged in the communication opening 34. The optical member 49 is made of synthetic resin. Polycarbonate resin is exemplified as the synthetic resin forming the optical member 49.

Each of the diffusion optical member 35, the display cover 36, and the optical member 49 is fixed to the cover member 30 by insert molding. With each of the diffusion optical member 35, the display cover 36, and the optical member 49 arranged inside the mold for insert molding, the synthetic resin for forming the cover member 30 is injected into the mold. .. As a result, the cover member 30 to which each of the diffusion optical member 35, the display cover 36, and the optical member 49 is fixed is formed.

The sealing member 37 seals the space between the display panel 39 and the display cover 36. The seal member 37 is a sheet-like member that can be elastically deformed. The seal member 37 has a rectangular annular shape. The seal member 37 is arranged between the display panel 39 and the display cover 36. The sealing member 37 is made of a material having cushioning properties. As a material for forming the sealing member 37, urethane foam rubber is exemplified. The seal member 37 comes into contact with at least a part of the display panel 39. The seal member 37 comes into contact with at least a part of the display cover 36. The seal member 37 also functions as a cushioning member that cushions the impact acting on the display panel 39. The display panel 39 has a display screen 391 facing rearward. When the display panel 39 and the seal member 37 come into contact with each other, the space between the display screen 391 of the display panel 39 and the front surface of the display cover 36 becomes a closed space.

The operating member 38 is operated to control the display panel 39. The operation member 38 is supported by the cover member 30. The operating member 38 is elastically deformable. In the embodiment, the operating member 38 is made of rubber. At least a part of the operating member 38 is arranged in the operating opening 33.

The operation member 38 has a plate portion 381, a button portion 382, and an operation convex portion 383.

The plate portion 381 is arranged so as to face the front surface of the cover member 30. The button portion 382 projects rearward from the rear surface of the plate portion 381. The operation convex portion 383 projects forward from the front surface of the plate portion 381.

The button portion 382 is inserted into the operation opening 33. Four button portions 382 are provided. The button portions 382 are inserted one by one into the operation opening 33. The operation unit 100C includes a button unit 382.

The operation convex portion 383 faces the switch element 48. Four operation convex portions 383 are provided. The operation convex portion 383 faces the switch element 48 one by one.

The display panel 39 displays the setting status of the output unit 8. The display panel 39 displays display data indicating the setting status of the output unit 8.

The display panel 39 includes a flat panel display. In embodiments, the display panel 39 is an organic EL panel that includes an organic electroluminescent display. The display panel 39 may be a liquid crystal panel including a liquid crystal display. The outer shape of the display panel 39 is a rectangular parallelepiped. The display screen 391 of the display panel 39 faces backward. The back surface of the display panel 39 faces forward.

At least a part of the display screen 391 is arranged so as to face the display opening 32. The display screen 391 faces the display cover 36. The display screen 391 is protected by the display cover 36. The seal member 37 is arranged so as to come into contact with the peripheral edge portion of the display screen 391. The display unit 100B includes a display screen 391 of the display panel 39.

The holding member 40 holds the display panel 39. The holding member 40 is fixed to the cover member 30 so that the display screen 391 of the display panel 39 is arranged in the display opening 32. The holding member 40 is made of a material having high hardness and high strength. Further, the holding member 40 is made of a material having impact resistance.

The holding member 40 is made of metal. Examples of the metal forming the holding member 40 include aluminum, stainless steel, iron, and copper.

The holding member 40 may be made of synthetic resin. Nylon resin or polycarbonate resin is exemplified as the metal forming the holding member 40.

The holding member 40 has a frame portion 401, a plate portion 402, a support plate portion 403, and a hook portion 404. The frame portion 401, the plate portion 402, the support plate portion 403, and the hook portion 404 are integrated. The frame portion 401 and the hook portion 404 may be separate bodies. The hook portion 404 may be formed of a synthetic resin different from the synthetic resin forming the frame portion 401.

At least a part of the frame portion 401 is arranged around the plate portion 402. At least a part of the frame portion 401 is arranged around the side surface of the display panel 39.

The plate portion 402 faces the back surface of the display panel 39.

The support plate portion 403 projects from the side portion of the frame portion 401. The support plate portion 403 includes a left support plate portion 403L projecting to the left from the left portion of the frame portion 401, and a right support plate portion 403R projecting to the right from the right portion of the frame portion 401.

The hook portion 404 is provided at the front end portion of the support plate portion 403. The hook portion 404 is elastically deformable. The hook portion 404 is hung on the peripheral edge portion of the first circuit board 45. The hook portion 404 includes a left hook portion 404L provided at the left end portion of the left support plate portion 403L and a right hook portion 404R provided at the right end portion of the right support plate portion 403R. The left hook portion 404L is hung on the left end portion of the first circuit board 45. The right hook portion 404R is hung on the right end portion of the first circuit board 45.

The interface controller 41 includes a computer system. The interface controller 41 controls the rear cover unit 100. The interface controller 41 includes a first circuit board 45 and a second circuit board 46.

The first circuit board 45 includes a printed wiring board and a plurality of electronic components mounted on the printed wiring board. Electronic components mounted on the printed wiring board include processors such as CPUs (Central Processing Units), non-volatile memories such as ROM (Read Only Memory) or storage, and volatile memories such as RAM (Random Access Memory). Examples are transistors, capacitors, and resistors.

The light emitting element 47 emits light. The light emitting element 47 includes a light emitting diode (LED: Light Emitting Diode). The light emitting element 47 is supported by the first circuit board 45. The light emitting element 47 is mounted on the printed wiring board of the first circuit board 45. The light emitting element 47 is arranged on the rear surface of the first circuit board 45. The light emitting element 47 emits light rearward. The light emitting element 47 is arranged on the upper part of the first circuit board 45. The light emitting element 47 emits light to the diffusion optical member 35. Two light emitting elements 47 are provided. The two light emitting elements 47 are arranged in the left-right direction.

The switch element 48 outputs an operation signal by being operated. The switch element 48 is an on / off switch. The switch element 48 includes a push button. The switch element 48 outputs an operation signal when pressed. The switch element 48 is supported by the first circuit board 45. The switch element 48 is mounted on the printed wiring board of the first circuit board 45. The switch element 48 is arranged on the rear surface of the first circuit board 45. The switch element 48 is arranged below the first circuit board 45. The switch element 48 is operated via the operating member 38. Four switch elements 48 are provided.

The light emitting element 50 emits light. The light emitting element 50 includes a light emitting diode (LED: Light Emitting Diode). The light emitting element 50 is supported by the first circuit board 45. The light emitting element 50 is mounted on the printed wiring board of the first circuit board 45. The light emitting element 50 is arranged on the rear surface of the first circuit board 45. The light emitting element 50 emits light to the rear. The light emitting element 50 is arranged on the right side of the first circuit board 45. The light emitting element 50 emits light to the optical member 49. One light emitting element 50 is provided.

The second circuit board 46 faces the first circuit board 45. The second circuit board 46 is arranged in front of the first circuit board 45. Like the first circuit board 45, the second circuit board 46 includes a printed wiring board and a plurality of electronic components mounted on the printed wiring board. The first circuit board 45 and the second circuit board 46 are connected to each other. The wireless communication device 1000 is supported by the second circuit board 46.

As shown in FIGS. 4 and 6, the third circuit board 501 is arranged at a position facing the second circuit board 46. The third circuit board 501 is housed in the motor housing section 21. The third circuit board 501 is arranged in front of the second circuit board 46. The third circuit board 501 includes a Universal Serial Bus (USB) circuit. The cover 500 is arranged on the upper part of the third circuit board 501.

The lead wire 700 is connected to the third circuit board 501. The connector 502 is fixed to the third circuit board 501. One end of the lead wire 700 is connected to the third circuit board 501 via the connector 502. The connector 900 is connected to the other end of the lead wire 700. The connector 900 includes a USB connector. The connector 900 is connected to the second circuit board 46. The connector 900 is removable from the second circuit board 46.

The line filter 800 and the rib 1001 are accommodated in the motor accommodating portion 21. The line filter 800 and the rib 1001 are arranged in front of the second circuit board 46. The line filter 800 has a cylindrical shape. The line filter 800 is arranged below the third circuit board 501. The rib 1001 extends from the inner surface of the left housing 2L. The rib 1001 is arranged behind the line filter 800. At least a part of the lead wire 700 is supported by the line filter 800. At least a part of the lead wire 700 is wound around the line filter 800. Further, at least a part of the lead wire 700 is arranged between the rib 1001 and the line filter 800.

When changing the setting of the output unit 8, the personal computer and the third circuit board 501 are connected, and a change command for changing the setting of the output unit 8 is transmitted from the personal computer to the third circuit board 501. The personal computer and the third circuit board 501 communicate with each other based on the USB standard. The change command transmitted to the third circuit board 501 is transmitted to the second circuit board 46 of the interface controller 41 via the lead wire 700.

Since the third circuit board 501 and the second circuit board 46 are separate bodies, and the third circuit board 501 and the second circuit board 46 are connected via the lead wire 700 and the connector 900, the third circuit board 501 Alternatively, even if the connector 900 fails or is damaged, the third circuit board 501 or the connector 900 may be replaced or repaired. Further, the wireless communication device 1000 is supported by the second circuit board 46. The rib 1001 and the line filter 800 are arranged in front of the wireless communication device 1000. As a result, the distance between the wireless communication device 1000 and the third circuit board 501 becomes long.

When changing the setting of the output unit 8, a change command may be transmitted from the personal computer to the interface controller 41 via the wireless communication device 1000.

The spacer 42 is arranged between the first circuit board 45 and the second circuit board 46. The second circuit board 46 faces the first circuit board 45 via the spacer 42. In the vertical direction, the size of the first circuit board 45 is larger than the size of the second circuit board 46. The lower end of the first circuit board 45 is arranged below the lower end of the second circuit board 46. The first circuit board 45 and the second circuit board 46 are connected via the spacer 42.

The spacer 42 has a positioning protrusion 421. Two positioning protrusions 421 are provided. A board opening 451 is provided in a part of the first circuit board 45. Two substrate openings 451 are provided. The positioning protrusion 421 provided on the spacer 42 is arranged in the substrate opening 451. The positioning protrusion 421 projects rearward from the rear surface of the first circuit board 45.

The first screw 43 fixes the cover member 30, the first circuit board 45, the spacer 42, and the second circuit board 46. Four first screws 43 are provided.

The cover member 30 is provided with a screw hole 301. Four screw holes 301 are provided in the cover member 30. The tip of the first screw 43 is inserted into the screw hole 301. The first circuit board 45 is provided with a screw opening 452. Four screw openings 452 are provided on the first circuit board 45. The second circuit board 46 is provided with a screw opening 462. Four screw openings 462 are provided in the second circuit board 46. At least a portion of the first screw 43 is arranged in the screw opening 452. At least a portion of the first screw 43 is located in the screw opening 462.

The second screw 44 fixes the cover member 30 and the first circuit board 45. The second screw 44 fixes the cover member 30 and the first circuit board 45 without the spacer 42 and the second circuit board 46. As described above, the lower end portion of the first circuit board 45 is arranged below the lower end portion of the second circuit board 46. The second screw 44 fixes the lower portion of the first circuit board 45 and the cover member 30. The second screw 44 is arranged below the first screw 43.

The cover member 30 is provided with a screw hole 302. The tip of the second screw 44 is inserted into the screw hole 302. The screw holes 302 are arranged in at least a part around the operating member 38.

Two second screws 44 are provided. Two screw holes 302 are provided in the cover member 30. One screw hole 302 is provided on the left side of the operating member 38. The other screw hole 302 is provided on the right side of the operating member 38.

A screw recess 454 is provided on the side of the first circuit board 45. Two screw recesses 454 are provided on the first circuit board 45. One screw recess 454 is provided so as to be recessed from the left side to the right side of the peripheral edge portion of the first circuit board 45. The other screw recess 454 is provided so as to be recessed from the right side to the left side of the peripheral edge portion of the first circuit board 45. At least a part of the second screw 44 is arranged in the screw recess 454.

The first circuit board 45 supports the holding member 40. The first circuit board 45 is arranged behind the holding member 40. The first circuit board 45 faces the plate portion 402 of the holding member 40. As described above, the holding member 40 has a hook portion 404. The left hook portion 404L is hung on the left end portion of the first circuit board 45. The right hook portion 404R is hung on the right end portion of the first circuit board 45. By hanging the hook portion 404 on the peripheral edge portion of the first circuit board 45, the first circuit board 45 and the holding member 40 are connected to each other.

The first circuit board 45 has a positioning portion 453 for positioning the holding member 40. The positioning portion 453 includes a positioning convex portion 421 of the spacer 42 projecting rearward from the rear surface of the first circuit board 45. The positioning convex portion 421 is arranged in the substrate opening 451 so as to project rearward from the rear surface of the first circuit board 45. The holding member 40 has a positioning unit 405 that is positioned by the positioning unit 453. The positioning portion 405 includes a positioning opening 408 provided in at least a part of the holding member 40. In the embodiment, the positioning opening 408 is provided in the support plate portion 403. The first circuit board 45 and the holding member 40 are positioned by inserting the positioning convex portion 421 of the positioning portion 453 into the positioning opening 408 of the positioning portion 405.

The cover member 30 has a positioning unit 303 for positioning the operating member 38. The positioning portion 303 includes a positioning convex portion 309 projecting forward from the front surface of the cover member 30. The operating member 38 has a positioning unit 384 positioned by the positioning unit 303. The positioning unit 384 includes a positioning opening 387 provided in at least a part of the operating member 38. In the embodiment, the positioning opening 387 is provided in the plate portion 381. The cover member 30 and the operation member 38 are positioned by inserting the positioning convex portion 309 of the positioning portion 303 into the positioning opening 387 of the positioning portion 384. The button portion 382 is inserted into the operation opening 33 while the positioning convex portion 309 of the positioning portion 303 is inserted into the positioning opening 387 of the positioning portion 384.

The cover member 30 has a positioning portion 304 for positioning the holding member 40. The positioning portion 304 includes a positioning convex portion 310 projecting forward from the front surface of the cover member 30. The holding member 40 has a positioning unit 406 positioned by the positioning unit 304. The positioning portion 406 includes a positioning opening 409 provided in at least a part of the holding member 40. In the embodiment, the positioning opening 409 is provided in the support plate portion 403. The cover member 30 and the holding member 40 are positioned by inserting the positioning convex portion 310 of the positioning portion 304 into the positioning opening 409 of the positioning portion 406. The display panel 39 held by the holding member 40 is arranged so as to face the display cover 36 in a state where the positioning convex portion 310 of the positioning portion 304 is inserted into the positioning opening 409 of the positioning portion 406. The display panel 39 held by the holding member 40 is arranged so as to face the display opening 32 in a state where the positioning convex portion 310 of the positioning portion 304 is inserted into the positioning opening 409 of the positioning portion 406. The peripheral edge of the display screen 391 of the display panel 39 comes into contact with the seal member 37.

With the cover member 30 and the operating member 38 positioned and the cover member 30 and the holding member 40 positioned, the first screw 43 is the screw opening 452 of the first circuit board 45 and the screw of the second circuit board 46. It is inserted into the screw hole 301 through the opening 462. By connecting the thread of the first screw 43 and the thread groove of the screw hole 301, the cover member 30, the first circuit board 45, and the second circuit board 46 are fixed.

By fixing the cover member 30, the first circuit board 45, and the second circuit board 46, the light emitting element 47 and the diffusion optical member 35 face each other, and the switch element 48 and the operation convex portion 383 face each other. The peripheral edge of the display screen 391 of the display panel 39 is pressed against the seal member 37, and the display screen 391 of the display panel 39 and the front surface of the display cover 36 face each other.

[Operating member]
FIG. 11 is a view of the operating member 38 according to the embodiment as viewed from the rear. As shown in FIGS. 8, 10, and 11, the operating member 38 has a plate portion 381, a button portion 382 protruding rearward from the rear surface of the plate portion 381, and an operation of projecting forward from the front surface of the plate portion 381. It has a convex portion 383. The plate portion 381, the button portion 382, and the operation convex portion 383 are integrated.

A plurality of button portions 382 are provided so as to surround the center point CP defined in the plate portion 381. A plurality of button portions 382 are provided around the center point CP at intervals. In the embodiment, four button portions 382 are provided. The button portion 382 includes a button portion 382A (first button portion) arranged above the center point CP, a button portion 382B (second button portion) arranged to the left of the center point CP, and the center point CP. It includes a button portion 382C (third button portion) arranged below and a button portion 382D (fourth button portion) arranged to the right of the center point CP. The button portion 382A, the button portion 382B, the button portion 382C, and the button portion 382D are arranged so as to surround the center point CP defined in the plate portion 381.

In a plane parallel to the surface of the plate portion 381, the outer shape of the button portion 382 is pentagonal. The shapes of the plurality of button portions 382 are substantially the same. The dimensions of the plurality of button portions 382 are substantially the same. The button portion 382 is arranged so that the corner portion having the smallest internal angle among the plurality of corner portions of the button portion 382 faces the center point CP.

A plurality of operation convex portions 383 are provided so as to surround the center point CP defined in the plate portion 381. A plurality of operation convex portions 383 are provided around the center point CP at intervals. In the embodiment, four operation convex portions 383 are provided. The operation convex portion 383 includes an operation convex portion 383A (first operation convex portion) arranged above the center point CP and an operation convex portion 383B (second operation convex portion) arranged to the left of the center point CP. , The operation convex portion 383C (third operation convex portion) arranged below the center point CP, and the operation convex portion 383D (fourth operation convex portion) arranged to the right of the center point CP are included. The operation convex portion 383A, the operation convex portion 383B, the operation convex portion 383C, and the operation convex portion 383D are arranged so as to surround the center point CP defined in the plate portion 381.

In a plane parallel to the surface of the plate portion 381, the outer shape of the operation convex portion 383 is circular. The shapes of the plurality of operating protrusions 383 are substantially the same. The dimensions of the plurality of operating protrusions 383 are substantially the same.

In a plane parallel to the surface of the plate portion 381, the position of at least a part of the button portion 382A and the position of the operation convex portion 383A coincide with each other. That is, at least a part of the button portion 382A and the operation convex portion 383A overlap in each of the left-right direction and the up-down direction. Similarly, at least a part of the button portion 382B and the operation convex portion 383B overlap in each of the left-right direction and the up-down direction. At least a part of the button portion 382C and the operation convex portion 383C overlap each other in the left-right direction and the up-down direction. At least a part of the button portion 382D and the operation convex portion 383D overlap in each of the left-right direction and the up-down direction.

Four switch elements 48 are provided. The switch element 48 includes a switch element 48A (first switch element) facing the front end portion of the operation convex portion 383A, a switch element 48B (second switch element) facing the front end portion of the operation convex portion 383B, and an operation convex portion. The switch element 48C (third switch element) facing the front end portion of the 383C and the switch element 48D (fourth switch element) facing the front end portion of the operation convex portion 383D are included. The operation convex portion 383A projects from the plate portion 381 so as to face the switch element 48A. The operation convex portion 383B projects from the plate portion 381 so as to face the switch element 48B. The operation convex portion 383C projects from the plate portion 381 so as to face the switch element 48C. The operation convex portion 383D projects from the plate portion 381 so as to face the switch element 48D.

The operator operates the operating member 38 so that the button portion 382 is pushed forward. The button portion 382 is displaced forward by being pushed forward by the operator.

When the button portion 382A is displaced forward, the operating convex portion 383A moves forward, and the switch element 48A is pushed by the operating convex portion 383A. That is, the switch element 48A is operated by the displacement of the button portion 382A. Even if the button portion 382A is displaced forward, the switch elements 48B, 48C, 48D are not pressed.

When the button portion 382B is displaced forward, the operating convex portion 383B moves forward, and the switch element 48B is pushed by the operating convex portion 383B. That is, the switch element 48B is operated by the displacement of the button portion 382B. Even if the button portion 382B is displaced forward, the switch elements 48C, 48D, and 48A are not pressed.

When the button portion 382C is displaced forward, the operating convex portion 383C moves forward, and the switch element 48C is pushed by the operating convex portion 383C. That is, the switch element 48C is operated by the displacement of the button portion 382C. Even if the button portion 382C is displaced forward, the switch elements 48D, 48A, and 48B are not pressed.

When the button portion 382D is displaced forward, the operating convex portion 383D moves forward, and the switch element 48D is pushed by the operating convex portion 383D. That is, the switch element 48D is operated by the displacement of the button portion 382D. Even if the button portion 382D is displaced forward, the switch elements 48A, 48B, 48C are not pressed.

In the embodiment, at least a part of the plate portion 381 is provided with an interlocking suppression portion 385 that suppresses interlocking between the first button portion 382 and the second button portion 382. The interlocking suppression unit 385 suppresses the displacement of the second button unit 382, which is different from the first button unit 382, due to the displacement of the first button unit 382. The interlocking suppression portion 385 is provided between the first button portion 382 and the second button portion 382 in the plate portion 381. That is, the interlocking suppression portion 385 is provided at the boundary between the adjacent button portions 382. Even if the button portion 382A is pushed backward by the interlocking suppressing portion 385, the displacement of the button portions 382B, 382C, 382D to the rear is suppressed. The four button units 382 are independently operated by the interlocking suppression unit 385.

In the embodiment, the interlocking suppression unit 385 includes a slit 386 provided in the plate unit 381. In the embodiment, the slit 386 is formed in a straight shape. The slit 386 is provided inside the peripheral edge portion of the plate portion 381. That is, the slit 386 is provided so as not to reach the peripheral edge portion of the plate portion 381.

In the embodiment, four slits 386 are provided. The slit 386 includes a slit 386A (first interlocking suppression unit), a slit 386B (second interlocking suppression unit), a slit 386C (third interlocking suppression unit), and a slit 386D (fourth interlocking suppression unit).

The slit 386 is provided so as to extend in the radial direction with respect to the center point CP. The slit 386A, the slit 386B, the slit 386C, and the slit 386D extend in the radial direction with respect to the center point CP. The slit 386A, the slit 386B, the slit 386C, and the slit 386D are arranged so as to surround the center point CP.

The slit 386A is provided between the button portion 382A and the button portion 382B in the circumferential direction with respect to the center point CP. The slit 386B is provided between the button portion 382B and the button portion 382C. The slit 386C is provided between the button portion 382C and the button portion 382D. The slit 386D is provided between the button portion 382D and the button portion 382A.

Each of the slit 386A, the slit 386B, the slit 386C, and the slit 386D is provided so as not to reach the peripheral edge portion of the plate portion 381. That is, the peripheral edge portion of the plate portion 381 is not divided by the slit 386.

Further, each of the slit 386A, the slit 386B, the slit 386C, and the slit 386D is provided so as not to reach the center point CP of the plate portion 381.

That is, the slit 386A, the slit 386B, the slit 386C, and the slit 386D are separated from each other. The slit 386A, the slit 386B, the slit 386C, and the slit 386D are provided so as not to be connected to each other. The slit 386A, the slit 386B, the slit 386C, and the slit 386D are provided so as to be independent of each other.

The length of the slit 386A and the length of the slit 386B are different. The length of the slit 386C and the length of the slit 386D are different. The length of the slit 386A and the length of the slit 386C are substantially equal. The length of the slit 386B and the length of the slit 386D are substantially equal. In the embodiment, the length of the slit 386A and the length of the slit 386C are longer than the length of the slit 386B and the length of the slit 386D. The width of the slit 386A, the width of the slit 386B, the width of the slit 386C, and the width of the slit 386D are equal to each other.

The length of the slit 386 means the dimension in the radial direction with respect to the center point CP. The width of the slit 386 means the dimension in the circumferential direction with respect to the center point CP.

The slit 386A and the slit 386C are substantially parallel. The slit 386B and the slit 386D are substantially parallel. The angle formed by the slit 386A and the slit 386B is substantially 90 [°]. The angle formed by the slit 386B and the slit 386C is substantially 90 [°]. The angle formed by the slit 386C and the slit 386D is substantially 90 [°]. The angle formed by the slit 386D and the slit 386A is substantially 90 [°].

Two positioning openings 387 are provided in the plate portion 381. One positioning opening 387 is provided at the first corner of the plate portion 381. The other positioning opening 387 is provided at the second corner of the plate portion 381. The first corner and the second corner face each other. That is, when a diagonal line passing through the first corner portion, the center point CP, and the second corner portion is defined, each of the two positioning openings 387 is arranged diagonally. The positioning convex portion 309 of the positioning portion 303 is inserted into each of the two positioning openings 387. The positioning portion 303 positions the cover member 30 and the operating member 38 at each of the two mutually facing corners of the plate portion 381.

The button portion 382 is inserted into the operation opening 33. As described above, four operation openings 33 are provided. That is, the cover member 30 is provided with a first operation opening 33, a second operation opening 33, a third operation opening 33, and a fourth operation opening 33. With the cover member 30 and the operating member 38 positioned, the button portion 382 is inserted into the operating opening 33 one by one. The button portion 382A is arranged in the first operation opening 33. The button portion 382B is arranged in the second operation opening 33. The button portion 382C is arranged in the third operation opening 33. The button portion 382D is arranged in the fourth operation opening 33. Each of the four button portions 382 projects rearward from the rear surface of the cover member 30 in a state of being arranged in the operation opening 33. The button portion 382 projects rearward from the rear surface of the cover member 30, so that the operator can push the button portion 382.

The interlocking suppression unit 385 does not have to be the slit 386. The interlocking suppressing portion 385 may be, for example, a thin-walled portion provided in at least a part of the plate portion 381, or a bellows portion provided in at least a part of the plate portion 381.

[Diffusion optics]
FIG. 12 is an exploded perspective view from the right rear showing the rear cover unit 100 according to the embodiment. FIG. 13 is an exploded perspective view from the right front showing the rear cover unit 100 according to the embodiment. FIG. 14 is a front view of the diffusion optical member 35 according to the embodiment. FIG. 15 is a perspective view from below showing the diffusion optical member 35 according to the embodiment. FIG. 16 is a perspective view from the right rear showing the diffusion optical member 35 according to the embodiment. FIG. 17 is a diagram showing the relationship between the diffusion optical member 35 and the light emitting element 47 according to the embodiment.

The diffusion optical member 35 is a transmission type diffusion optical member. The diffuse optical member 35 is long in the left-right direction. The diffuse optical member 35 has an incident surface 351 and an ejection surface 352. The diffuse optical member 35 has a passing portion 35A through which at least a part of the light incident from the incident surface 351 passes, and a connecting portion 35B arranged at least a part around the passing portion 35A. The passing portion 35A is long in the left-right direction. The entrance surface 351 and the injection surface 352 are provided on the passing portion 35A. The passing portion 35A is arranged in the display opening 32 of the cover member 30. The connection portion 35B is fixed to the cover member 30.

The entrance surface 351 and the injection surface 352 are arranged at different positions in the front-rear direction. The entrance surface 351 is arranged in front of the injection surface 352. The diffuse optical member 35 is fixed to the cover member 30 so that at least a part of the incident surface 351 faces forward and at least a part of the injection surface 352 faces rearward.

The passage portion 35A has a front surface 353, a rear surface 354, and a recess 355 provided in the front surface 353. The front surface 353 faces forward. At least part of the rear surface 354 faces backwards. Each of the front surface 353 and the rear surface 354 is long in the left-right direction.

The front surface 353 is a flat surface. The front surface 353 is orthogonal to the axis parallel to the optical axis OX of the light emitting element 47. The optical axis OX of the light emitting element 47 extends in the front-rear direction. In the embodiment, the optical axis OX of the light emitting element 47 is parallel to the rotation axis AX of the motor 5.

The recess 355 is formed so as to be recessed rearward from the front surface 353. Two recesses 355 are provided. The two recesses 355 are arranged in the left-right direction. The two recesses 355 are spaced apart from each other.

The incident surface 351 of the diffuse optical member 35 includes the inner surface of the recess 355. The ejection surface 352 of the diffuse optical member 35 includes a rear surface 354.

A groove 356 is provided on the inner surface of the recess 355 which is the incident surface 351. The groove 356 extends in the vertical direction. A plurality of grooves 356 are provided in the left-right direction on the inner surface of the recess 355. The groove 356 provided on the incident surface 351 functions as a diffuser for diffusing light. The incident surface 351 provided with the groove 356 functions as a diffusion surface for diffusing light.

The recess 355 is formed substantially in a semi-cylindrical shape. As shown in FIG. 17, the cross-sectional shape of the inner surface of the recess 355 orthogonal to the front surface 353 is substantially arcuate.

In the embodiment, the cross section orthogonal to the front surface 353 means a cross section parallel to a predetermined surface including each of the first axis parallel to the front-rear direction and the second axis parallel to the left-right direction. The cross-sectional shape of the inner surface of the recess 355 parallel to the predetermined surface is the same at each of the plurality of positions in the vertical direction. That is, when the recess 355 is regarded as a half cylinder, the central axis of the half cylinder extends in the vertical direction.

Further, when a reference line extending in the vertical direction through the center of the concave portion 355 in the left-right direction is defined, the shape of the concave portion 355 is symmetrical with respect to the reference line. That is, when the recess 355 is viewed from the front, the shape of the recess 355 is symmetrical.

As shown in FIG. 17, the light emitting element 47 is arranged so as to face the incident surface 351. The incident surface 351 and the light emitting element 47 are arranged at intervals in the front-rear direction. The light emitting element 47 is supported by the first circuit board 45. The light emitting element 47 is arranged in front of the front surface 353. The light emitting element 47 is arranged so as to face the incident surface 351 on the outside of the recess 355.

Two recesses 355 are arranged at intervals in the left-right direction. That is, two incident surfaces 351 are provided. In an embodiment, the incident surface 351 includes a first incident surface 351 and a second incident surface 351 located to the right of the first incident surface 351. The first incident surface 351 and the second incident surface 351 are arranged at intervals in the left-right direction.

Two light emitting elements 47 are provided. One recess 355 and one light emitting element 47 face each other. The light emitting element 47 includes a first light emitting element 47 that causes light to be incident on the first incident surface 351 and a second light emitting element 47 that causes light to be incident on the second incident surface 351.

At least a part of the light emitted from the light emitting element 47 is incident on the incident surface 351. The incident surface 351 diffuses the light from the light emitting element 47. When the light emitting element 47 is regarded as a point light source, the incident surface 351 converts the light from the point light source into a surface light source. The incident surface 351 diffuses the light from the light emitting element 47 at least in the left-right direction.

The light incident on the incident surface 351 is diffused on the incident surface 351 and then passes through the passing portion 35A and is emitted from the injection surface 352. The ejection surface 352 emits the light diffused on the incident surface 351.

The diffuse optical member 35 is arranged on the upper part of the cover member 30. The injection surface 352 is arranged on the upper part of the cover member 30. The injection surface 352 is tilted with respect to the optical axis OX of the light emitting element 47. In the embodiment, at least a part of the injection surface 352 is inclined downward toward the rear.

Each of one end of the injection surface 352 and the other end of the injection surface in the left-right direction are arranged at positions closer to the incident surface 351 in the front-rear direction than the central portion of the injection surface 352. That is, each of the left end portion and the right end portion of the injection surface 352 is arranged on the front side of the central portion of the injection surface 352. The injection surface 352 curves from the central portion toward the left end portion and from the central portion toward the right end portion. That is, in the embodiment, the injection surface 352 includes a curved surface. At least a part of the injection surface 352 is curved so as to bulge backward.

The ejection surface 352 emits at least a part of the light from the incident surface 351 to the rear. The injection surface 352 emits at least a part of the light from the incident surface 351 to the left rear and the right rear, respectively. The injection surface 352 emits at least a part of the light from the incident surface 351 to the upper rear and the lower rear respectively.

In the embodiment, each of the left end portion and the right end portion of the injection surface 352 is arranged behind the rear end portion of the notification opening 31. That is, the left end portion of the injection surface 352 projects rearward from the rear surface of the cover member 30 arranged around the left end portion of the injection surface 352. The right end portion of the injection surface 352 projects rearward from the rear surface of the cover member 30 arranged around the right end portion of the injection surface 352.

The connecting portion 35B passes through an upper connecting portion 351B provided on the upper part of the passing portion 35A, a left connecting portion 352B provided on the left portion of the passing portion 35A, and a right connecting portion 353B provided on the right portion of the passing portion 35A. It has a lower connecting portion 354B provided at the lower part of the portion 35A.

The upper connecting portion 351B projects upward from the upper portion of the passing portion 35A. The upper connecting portion 351B extends in the left-right direction. The left connecting portion 352B projects to the left from the left portion of the passing portion 35A. The right connecting portion 353B projects to the right from the right portion of the passing portion 35A. The left end portion of the upper connection portion 351B and the left connection portion 352B are connected to each other. The right end portion of the upper connection portion 351B and the right connection portion 353B are connected to each other. The upper connection portion 351B, the left connection portion 352B, and the right connection portion 353B are arranged so as to surround a part of the front surface 353.

The lower connecting portion 354B projects downward from the lower part of the passing portion 35A. The lower connecting portion 354B extends in the left-right direction.

FIG. 18 is a perspective view from below showing the cover member 30 according to the embodiment. FIG. 19 is a perspective view from the right rear showing the cover member 30 according to the embodiment.

As shown in FIG. 18, a peripheral wall 320, a partition wall 305, a partition wall 306, and a partition wall 307 are provided on the front surface of the cover member 30. The peripheral wall 320 is provided along the peripheral edge portion of the cover member 30. The partition wall 305, the partition wall 306, and the partition wall 307 are provided inside the peripheral wall 320.

The peripheral wall 320, the partition wall 305, the partition wall 306, and the partition wall 307 define the first partition space 30A, the second partition space 30B, the third partition space 30C, and the fourth partition space 30D. The first compartment space 30A is defined by the peripheral wall 320 and the compartment wall 305. The second partition space 30B is defined by the peripheral wall 320 and the partition wall 306. The third partition space 30C is defined by the peripheral wall 320, the partition wall 305, and the partition wall 306. The fourth partition space 30D is defined by the peripheral wall 320 and the partition wall 307. The first partition space 30A and the third partition space 30C are partitioned by a partition wall 305. The third partition space 30C and the second partition space 30B are partitioned by a partition wall 306. The second partition space 30B, the third partition space 30C, and the fourth partition space 30D are partitioned by a partition wall 307.

The first partition space 30A is provided on the upper part of the cover member 30. The second partition space 30B is provided in the lower part of the cover member 30. The third compartment space 30C is provided between the first compartment space 30A and the second compartment space 30B in the vertical direction. The fourth compartment space 30D is provided on the right side of the second compartment space 30B.

The incident surface 351 and the light emitting element 47 of the diffusion optical member 35 are arranged in the first partition space 30A. The operation member 38 is arranged in the second compartment space 30B. The display panel 39 and the holding member 40 are arranged in the third partition space 30C. The optical member 49 is arranged in the fourth compartment space 30D.

By arranging the incident surface 351 of the diffuse optical member 35 and the light emitting element 47 in the first partition space 30A, at least a part of the light emitted from the light emitting element 47 is the display opening 32, the operation opening 33, and the communication opening. Leakage from at least a part of 34 to the external space of the cover member 30 is suppressed.

Further, the strength of the cover member 30 is improved by providing the peripheral wall 320, the partition wall 305, the partition wall 306, and the partition wall 307.

A groove 308 is provided on the inner surface of the cover member 30 that defines the first compartment space 30A. At least a portion of the connecting portion 35B is arranged in the groove 308. The groove 308 includes an upper groove 3081 provided on the ceiling surface of the first section space 30A and a lower groove 3084 provided on the bottom surface of the first section space 30A. The upper connecting portion 351B is arranged in the upper groove 3081. The lower connecting portion 354B is arranged in the lower groove 3084. The left connection portion 352B is supported by a support surface 3082 provided on the left portion of the first partition space 30A. The right connection portion 353B is supported by a support surface 3083 provided on the right portion of the first partition space 30A.

[Display panel and holding member]
FIG. 20 is an exploded perspective view from the right rear showing the display panel 39 and the holding member 40 according to the embodiment. FIG. 21 is an exploded perspective view from the right front showing the display panel 39 and the holding member 40 according to the embodiment.

The holding member 40 has a frame portion 401, a plate portion 402, a support plate portion 403, and a hook portion 404.

A connection opening 407 is provided in at least a part of the plate portion 402. The connection opening 407 is provided on the peripheral edge of the plate portion 402. In the embodiment, the connection opening 407 is provided on the upper part of the plate portion 402.

The connection opening 407 has a rectangular shape. The display panel 39 and the first circuit board 45 of the interface controller 41 are connected by a flexible board or a connecting member 390 such as a lead wire. The display panel 39 and the interface controller 41 communicate data via the connecting member 390. At least a portion of the connecting member 390 is arranged in the connecting opening 407. That is, the connecting member 390 is passed through the connecting opening 407 while the display panel 39 is held by the holding member 40.

The frame portion 401 has a recess 401A recessed away from the center of the connection opening 407. In the embodiment, the recess 401A is provided in the upper part of the frame portion 401. The recess 401A is recessed upward so as to be away from the center of the connection opening 407. At least a portion of the connecting member 390 is positioned in the recess 401A.

The frame portion 401 has a first portion 4011 projecting rearward from the peripheral edge portion of the rear surface of the plate portion 402, and a second portion 4012 forward from the peripheral edge portion on the front surface of the plate portion 402. That is, the second portion 4012 projects in the direction opposite to that of the first portion 4011.

The display panel 39 is arranged in the first space 4013 defined by the rear surface of the plate portion 402 and the inner surface of the first portion 4011. In the state where the display panel 39 is arranged in the first space 4013, the rear end portion of the first portion 4011 is arranged behind the display screen 391. That is, at least a part of the first portion 4011 protrudes rearward from the display screen 391.

The front surface of the plate portion 402 and the second portion 4012 define the second space 4014. The second space 4014 can accommodate at least a part of the connecting member 390.

[Connection structure between holding member and interface controller]
FIG. 22 is a side view showing a connection structure between the holding member 40 and the interface controller 41 according to the embodiment. FIG. 23 is an exploded perspective view from the right rear showing the connection structure between the holding member 40 and the interface controller 41 according to the embodiment. FIG. 24 is an exploded perspective view from the right front showing the connection structure between the holding member 40 and the interface controller 41 according to the embodiment.

The holding member 40 is connected to the first circuit board 45 by the hook portion 404. The hook portion 404 can be elastically deformed so that the left hook portion 404L and the right hook portion 404R are separated from each other. In the embodiment, a hook opening 410 is provided at the rear of the hook portion 404. The hook opening 410 makes it easy for the hook portion 404 to be elastically deformed. The left hook portion 404L and the left hook portion 404L are arranged so that the left hook portion 404L is arranged to the left of the left end portion of the first circuit board 45 and the right hook portion 404R is arranged to the right of the right end portion of the first circuit board 45. After the right hook portion 404R is elastically deformed, the elastic deformation between the left hook portion 404L and the right hook portion 404R is released. By releasing the elastic deformation between the left hook portion 404L and the right hook portion 404R, the first circuit board 45 becomes the left hook portion 404L due to the elastic force (restoring force) of the left hook portion 404L and the right hook portion 404R. It is sandwiched between the right hook portion 404R. Further, the front end portion of the hook portion 404 is hooked on at least a part of the front surface of the first circuit board 45. As a result, the holding member 40 is connected to the first circuit board 45.

A spacer 42 is arranged between the first circuit board 45 and the second circuit board 46. The spacer 42 has an annular portion 422, a screw boss portion 423, and a positioning convex portion 421. The screw boss portion 423 is provided with a screw opening 424 in which the first screw 43 is arranged.

The first screw 43 fixes the cover member 30, the first circuit board 45, the spacer 42, and the second circuit board 46. The first screw 43 is arranged in the screw hole 301 of the cover member 30 in a state of being arranged in each of the screw opening 462 of the second circuit board 46, the screw opening 424 of the spacer 42, and the screw opening 452 of the first circuit board 45. Will be inserted. As a result, the cover member 30, the first circuit board 45, the spacer 42, and the second circuit board 46 are fixed by the first screw 43.

Electronic components are mounted on the front surface of the first circuit board 45. Electronic components are mounted on the rear surface of the second circuit board 46. The spacer 42 suppresses contact between the electronic component mounted on the front surface of the first circuit board 45 and the electronic component mounted on the rear surface of the second circuit board 46.

The lower portion of the first circuit board 45 is fixed to the cover member 30 by the second screw 44. A switch element 48 is arranged below the first circuit board 45. The lower portion of the first circuit board 45 is pushed backward by the operator via the operating member 38. By fixing the lower part of the first circuit board 45 and the cover member 30 by the second screw 44, even if the lower part of the first circuit board 45 is pushed backward, the deformation of the first circuit board 45 is suppressed. ..

[Interface controller]
The interface controller 41 includes a first circuit board 45 and a second circuit board 46. The interface controller 41 controls at least the light emitting element 47 (notification light emitting unit 100A) and the display panel 39 (display unit 100B).

In the embodiment, the interface controller 41 controls the light emitting element 47 at least based on the working conditions of the output unit 8. That is, the interface controller 41 controls the light emitting state of the notification light emitting unit 100A based on the working condition of the output unit 8.

Further, the interface controller 41 controls the display panel 39 at least based on the setting status of the output unit 8. That is, the interface controller 41 controls the display data displayed on the display unit 100B based on the setting status of the output unit 8. In the embodiment, the interface controller 41 controls the display data displayed on the display screen 391 of the display panel 39 based on the operation of the operation member 38 (operation unit 100C).

[Operation of screw tightening machine]
In the screw tightening operation, the main controller 15 starts the motor 5 to rotate the output unit 8 based on the operation signal of the trigger switch 11. In the screw tightening work, when the screw is screwed into the work target, the torque applied to the output unit 8 increases. The torque applied to the output unit 8 is transmitted to the internal gear 70 via the carrier 72C and the planetary gear 72P. The torque applied to the internal gear 70 is transmitted to the torque sensor 9 via the front plate portion 91. The torque applied to the output unit 8 is detected by the torque sensor 9.

The rear plate portion 92 of the torque sensor 9 is fixed to the gear case 3. The hollow portion 90 of the torque sensor 9 is twisted in the rotational direction by the internal gear 70. The front plate portion 91 and the rear plate portion 92 also receive torque, but each of the front plate portion 91 and the rear plate portion 92 has a larger diameter than the hollow portion 90. Therefore, the torsional deformation of the front plate portion 91 and the rear plate portion 92 is smaller than the torsional deformation of the hollow portion 90. When the hollow portion 90 of the torque sensor 9 is twisted in the rotational direction, the four strain gauges 93 arranged on the surface of the hollow portion 90 are deformed. Due to the deformation of the strain gauge 93, a detection signal indicating the torque applied to the hollow portion 90 is transmitted from the strain gauge 93 to the main controller 15 via a lead wire (not shown).

The main controller 15 acquires the detection signal of the torque sensor 9. The main controller 15 calculates the torque applied to the output unit 8 based on the detection signal of the torque sensor 9. The target torque is registered in the main controller 15. Based on the detection signal of the torque sensor 9, the main controller 15 controls the motor 5 so that the screw is tightened to the work target with the target torque.

The main controller 15 controls the motor 5 so that the rotation of the rotor 52 is stopped when it is determined that the torque applied to the output unit 8 has reached the target torque based on the detection signal of the torque sensor 9. As a result, the main controller 15 can control the motor 5 so that the screw is tightened to the work target with the target torque based on the detection signal of the torque sensor 9.

As described above, the rear cover unit 100 has a wireless communication device 1000. The main controller 15 transmits the detection signal of the torque sensor 9 to the wireless communication device 1000. The wireless communication device 1000 transmits the detection signal of the torque sensor 9 to a management computer arranged outside the screw tightening machine 1. The management computer records the detection signal of the torque sensor 9 in the screw tightening operation.

[Operation of notification light emitting part]
FIG. 25 is a diagram showing the relationship between the state of the screw tightening machine 1 and the light emitting state of the notification light emitting unit 100A according to the embodiment.

The interface controller 41 controls the light emitting state of the notification light emitting unit 100A based on the state of the screw tightening machine 1. The notification light emitting unit 100A changes the light emitting state based on the state of the screw tightening machine 1.

The light generated by the light emitting element 47, which is a light emitting diode, is emitted from the notification light emitting unit 100A. Further, two light emitting elements 47 are provided. The change in the light emission state of the notification light emitting unit 100A includes at least one of a change in the light emission color, a change in the light emission time, and a change in the presence / absence of blinking.

The state of the screw tightening machine 1 includes at least the state of work by the output unit 8. The work situation by the output unit 8 includes the tightening torque of the screw applied to the output unit 8 in the screw tightening work. The work situation by the output unit 8 includes a determination result indicating whether or not the screw is tightened to the work target with the target torque.

As shown in FIG. 25, in the case of "tightening OK", that is, when the difference between the tightening torque of the screw applied to the output unit 8 and the target torque in the screw tightening operation is less than a predetermined torque threshold value, the interface controller 41 is used. The light emitting element 47 is controlled so that each of the two light emitting elements 47 emits green light for 2 seconds.

In the case of "tightening NG (torque)", that is, when the difference between the tightening torque of the screw applied to the output unit 8 and the target torque in the screw tightening work exceeds a predetermined torque threshold, the interface controller 41 has two. The light emitting element 47 is controlled so that each of the light emitting elements 47 emits red light for 2 seconds.

In the case of "maintenance warning", that is, when it is determined that maintenance of at least a part of the screw tightening machine 1 is required, the interface controller 41 determines that each of the two light emitting elements 47 is yellow light for more than 2 seconds. The light emitting element 47 is controlled so as to blink continuously for a time.

[Operation of display]
FIG. 26 is a diagram showing a screen transition diagram of the display unit 100B according to the embodiment.

The interface controller 41 controls the display data displayed on the display unit 100B based on the state of the screw tightening machine 1. The display unit 100B changes the display data based on the state of the screw tightening machine 1.

The state of the screw tightening machine 1 includes at least the setting state of the output unit 8. The setting status of the output unit 8 includes the setting status of the target torque when the screw is tightened to the work target in the screw tightening work.

The interface controller 41 changes the display data displayed on the display unit 100B based on the operation of the operation unit 100C.

As shown in FIG. 26, the torque display screen S1, the password display screen S2, and the work number display screen S3 are displayed on the display unit 100B.

When the button unit 382D is pressed while the torque display screen S1 is displayed, the transition from the torque display screen S1 to the password display screen S2. When the button unit 382B is pressed while the password display screen S2 is displayed, the transition from the password display screen S2 to the torque display screen S1 occurs.

When the button unit 382C is pressed while the torque display screen S1 is displayed, the transition from the torque display screen S1 to the work number display screen S3. When the button unit 382A is pressed while the work number display screen S3 is displayed, the transition from the work number display screen S3 to the torque display screen S1.

On the torque display screen S1, the target torque when the screw is tightened to the work target in the screw tightening work is displayed. When changing the target torque, a change command for instructing the interface controller 41 to change the target torque is transmitted from a personal computer outside the screw tightening machine 1.

On the password display screen S2, the worker can enter the password. For example, when changing the setting of the output unit 8, a password is input. In embodiments, the password is represented by a four digit number. On the password display screen S2, when the button portion 382A is pressed, the number increases, and when the button portion 382C is pressed, the number decreases. On the password display screen S2, when the button portion 382B is pressed, the digit of the number moves to the left, and when the button portion 382D is pressed, the digit of the number moves to the right. When determining the changed number, the button portion 382 is pressed and held.

On the work number display screen S3, the total number of screws tightened to the work target (number of times the screw tightening work is performed) is displayed. The interface controller 41 can count the number of screws tightened to the work target. When the operator wants to confirm the total number of screws tightened to the work target, the work number display screen S3 is displayed on the display unit 100B.

[effect]
As described above, according to the embodiment, the light emitted from the light emitting element 47 is diffused by the diffused optical member 35. As a result, the decrease in visibility of the notification light emitting unit 100A is suppressed. For example, the operator can satisfactorily visually recognize the light emitting state of the notification light emitting unit 100A from various directions.

The incident surface 351 of the diffusing optical member 35 includes a diffusing portion that diffuses light. That is, the light emitted from the light emitting element 47 is diffused on the incident surface 351. By diffusing the light on the incident surface 351 the diffused light passes through the diffused optical member 35 and then is emitted from the ejection surface 352. As a result, the decrease in visibility of the notification light emitting unit 100A is effectively suppressed.

The diffuser portion for diffusing light includes a groove 356 provided on the incident surface 351. The groove 356 allows the light to be diffused.

The incident surface 351 and the light emitting element 47 are arranged in the front-rear direction. The diffuse optical member 35 is long in the left-right direction. The groove 356 extends in the vertical direction. As a result, the light incident on the groove 356 can be diffused in the left-right direction. The light is emitted from the emission surface 352 which is long in the left-right direction. At the ejection surface 352, the brightness of the light is made uniform.

A plurality of grooves 356 extending in the vertical direction are provided in the left-right direction. As a result, the light is sufficiently diffused in the left-right direction. At the ejection surface 352, the brightness of the light is made uniform.

At least two incident surfaces 351 are provided. The light emitting element 47 is arranged so as to face each of the two incident surfaces 351. The two incident surfaces 351 are arranged in the left-right direction, and the two light emitting elements 47 are arranged in the left-right direction. This allows the light to be sufficiently diffused in the left-right direction. At the ejection surface 352, the brightness of the light is made uniform.

In the embodiment, the diffuse optical member 35 has a front surface 353 which is a flat surface and a recess 355 provided in the front surface 353. The incident surface 351 includes the inner surface of the recess 355. As a result, the light emitted from the light emitting element 47 is effectively diffused on the incident surface 351.

The cross-sectional shape of the recess 355 parallel to the predetermined surface including each of the first axis parallel to the front-rear direction and the second axis parallel to the left-right direction is the same at each of the plurality of positions in the vertical direction. That is, when the recess 355 is regarded as a half cylinder, the central axis of the half cylinder extends in the vertical direction. The light is sufficiently diffused in the left-right direction. At the ejection surface 352, the brightness of the light is made uniform.

The shape of the recess 355 is symmetrical with respect to a reference line extending in the vertical direction through the center of the recess 355 in the left-right direction. That is, when the recess 355 is viewed from the front, the shape of the recess 355 is symmetrical. Therefore, the light incident on the incident surface 351 is uniformly diffused in each of the left direction and the right direction.

The light emitting element 47 is arranged so as to face the incident surface 351 on the outside of the recess 355. That is, the light emitting element 47 does not enter the inside of the recess 355. As a result, the light emitted from the light emitting element 47 properly irradiates the inner surface of the recess 355.

The entrance surface 351 and the injection surface 352 are arranged at different positions in the front-rear direction. In the embodiment, the incident surface 351 is arranged in front of the injection surface 352. Each of the left end portion of the injection surface 352 and the right end portion of the injection surface 352 is arranged in front of the central portion of the injection surface 352. The injection surface 352 curves from the central portion of the injection surface 352 toward the left end portion, and curves from the central portion of the injection surface 352 toward the right end portion. That is, in the embodiment, the injection surface 352 includes a curved surface. At least a part of the injection surface 352 is curved so as to bulge backward. As a result, the light emitted from the injection surface 352 spreads to the left rear and the right rear respectively. As a result, the decrease in visibility of the notification light emitting unit 100A is suppressed. The operator can satisfactorily visually recognize the light emitting state of the notification light emitting unit 100A from various directions.

The diffuse optical member 35 is fixed to the cover member 30. The cover member 30 is provided with a notification opening 31. The diffuse optical member 35 is fixed to the cover member 30 so that at least a part of the diffuse optical member 35 is arranged in the notification opening 31. As a result, the operator can visually recognize the light emitted from the diffused optical member 35 through the notification opening 31.

The diffuse optical member 35 has a passing portion 35A through which at least a part of the light incident from the incident surface 351 passes, and a connecting portion 35B arranged at least a part around the passing portion 35A. The passage portion 35A is arranged in the notification opening 31. The connection portion 35B is fixed to the cover member 30. As a result, the operator can visually recognize the light emitted from the passing portion 35A through the notification opening 31. Further, the diffusion optical member 35 is properly fixed to the cover member 30 via the connecting portion 35B.

The cover member 30 has a partition wall 305. The incident surface 351 and the light emitting element 47 of the diffusion optical member 35 are arranged in the first partition space 30A defined by the partition wall 305. By arranging the incident surface 351 of the diffuse optical member 35 and the light emitting element 47 in the first partition space 30A, at least a part of the light emitted from the light emitting element 47 is a display opening 32, an operation opening 33, and a communication opening. Leakage from at least a part of 34 to the external space of the cover member 30 is suppressed.

The cover member 30 is arranged so as to cover the opening provided at the rear of the motor accommodating portion 21. That is, the cover member 30 can function as a rear cover that covers the opening provided at the rear of the motor accommodating portion 21. The rear cover unit 100 is arranged at the rear of the motor accommodating portion 21. Since the rear cover unit 100 is arranged at the rear of the motor accommodating portion 21, the operator can smoothly exchange data with the rear cover unit 100.

The diffuse optical member 35 is arranged on the upper part of the cover member 30. As a result, the operator can visually recognize the diffused optical member 35 while holding the grip portion 22 by hand.

The diffuse optical member 35 is fixed to the cover member 30 so that at least a part of the injection surface 352 faces rearward. As a result, the operator can visually recognize the injection surface 352 of the diffusion optical member 35 from behind while holding the grip portion 22 by hand.

At least a portion of the ejection surface 352 tilts downward toward the rear. As a result, the operator can visually recognize the injection surface 352 of the diffusion optical member 35 with good visibility while holding the grip portion 22 by hand.

The light emitting element 47 is supported by the first circuit board 45. The first circuit board 45 is fixed to the cover member 30 by the first screw 43. As a result, fluctuations in the relative positions of the diffused optical member 35 fixed to the cover member 30 and the light emitting element 47 are suppressed.

The interface controller 41 controls the light emitting element 47 based on the working conditions of the output unit 8. As a result, the operator can confirm the light emitting state of the notification light emitting unit 100A and confirm the work status of the output unit 8.

[Other embodiments]
In the above-described embodiment, the electric working machine is a screw tightening machine (electric driver) which is a kind of electric tool. Power tools are not limited to electric screwdrivers. Examples of power tools include driver drills, angle drills, impact drivers, grinders, hammers, hammer drills, circular saws, and reciprocating saws. Further, the electric work machine may be a gardening tool (Outdoor Power Equipment). Examples of gardening tools include chainsaws, hedge trimmers, lawn mowers, mowers, and blowers.

In the above-described embodiment, the battery pack 16 mounted on the battery mounting portion is used as the power source for the electric motor. A commercial power source (AC power source) may be used as a power source for the electric work machine.

1 ... Screw tightening machine, 2 ... Housing, 2L ... Left housing, 2R ... Right housing, 2S ... Screw, 3 ... Gear case, 4 ... Battery mounting part, 5 ... Motor, 6 ... Bearing box, 7 ... Planetary gear mechanism, 8 ... Output unit, 9 ... Torque sensor, 10 ... Fan, 11 ... Trigger switch, 11A ... Trigger member, 11B ... Switch body, 12 ... Forward / reverse switching lever, 13 ... Sound generator, 14 ... Light emitting unit, 15 ... Main controller , 15A ... Board, 15B ... Controller case, 16 ... Battery pack, 21 ... Motor housing, 22 ... Grip, 23 ... Controller housing, 24A ... Intake port, 24B ... Exhaust port, 25 ... Groove, 30 ... Cover member , 30A ... 1st compartment space, 30B ... 2nd compartment space, 30C ... 3rd compartment space, 30D ... 4th compartment space, 31 ... notification opening, 32 ... display opening, 33 ... operation opening, 34 ... communication opening, 35 ... Diffuse optical member, 35A ... Passing part, 35B ... Connection part, 36 ... Display cover, 37 ... Seal member, 38 ... Operation member, 39 ... Display panel, 40 ... Holding member, 41 ... Interface controller, 42 ... Spacer, 43 ... 1st screw, 44 ... 2nd screw, 45 ... 1st circuit board, 46 ... 2nd circuit board, 47 ... light emitting element, 48 ... switch element, 48A ... switch element (first switch element), 48B ... switch element (2nd switch element), 48C ... switch element (3rd switch element), 48D ... switch element (4th switch element), 49 ... optical member, 50 ... light emitting element, 51 ... stator, 51A ... stator core, 51B ... front Insulator, 51C ... Rear insulator, 51D ... Coil, 51E ... Sensor board, 52 ... Rotor, 52A ... Rotor core, 52B ... Permanent magnet, 53 ... Rotor shaft, 53A ... Front end, 54 ... Bearing, 55 ... Bearing, 57 ... Bearing Holding part, 70 ... internal gear, 71C ... carrier, 71P ... planetary gear, 71S ... pinion gear, 72C ... carrier, 72P ... planetary gear, 72S ... sun gear, 73 ... washer, 74 ... elastic member, 75 ... elastic member, 81 ... spindle , 81A ... Insertion hole, 82 ... Chuck, 82A ... Ball, 83 ... Bearing, 84 ... Bearing, 90 ... Hollow part, 91 ... Front plate part, 91G ... Gear, 92 ... Rear plate part, 93 ... Strain gauge, 96 ... Through hole, 100 ... rear cover unit, 100A ... notification light emitting unit, 100B ... display unit, 100C ... operation unit, 100D ... communication light emitting unit, 301 ... screw hole, 302 ... screw hole, 3 03 ... Positioning part, 304 ... Positioning part, 305 ... Section wall, 306 ... Section wall, 307 ... Section wall, 308 ... Groove, 309 ... Positioning convex part, 310 ... Positioning convex part, 320 ... Peripheral wall, 330 ... Convex part, 351B ... upper connection part, 352B ... left connection part, 353B ... right connection part, 354B ... lower connection part, 351 ... incident surface, 352 ... injection surface, 353 ... front surface, 354 ... rear surface, 355 ... recess, 356 ... groove, 381 ... plate part, 382 ... button part, 382A ... button part (first button part), 382B ... button part (second button part), 382C ... button part (third button part), 382D ... button part (fourth) Button part), 383 ... Operation convex part, 383A ... Operation convex part (first operation convex part), 383B ... Operation convex part (second operation convex part), 383C ... Operation convex part (third operation convex part), 383D ... Operation convex portion (fourth operation convex portion), 384 ... Positioning unit, 385 ... Interlocking suppression unit, 386 ... Slit, 386A ... Slit (first interlocking suppression unit), 386B ... Slit (second interlocking suppression unit), 386C ... Slit (third interlocking restraint), 386D ... Slit (fourth interlocking restraint), 387 ... Positioning opening, 390 ... Connection member, 391 ... Display screen, 401 ... Frame, 401A ... Recess, 402 ... Plate, 403 ... Support plate part, 403L ... Left support plate part, 403R ... Right support plate part, 404 ... Hook part, 404L ... Left hook part, 404R ... Right hook part, 405 ... Positioning part, 406 ... Positioning part, 407 ... Connection Opening, 408 ... Positioning opening, 409 ... Positioning opening, 410 ... Hook opening, 421 ... Positioning convex part, 422 ... Circular part, 423 ... Screw boss part, 424 ... Screw opening, 451 ... Board opening, 452 ... Screw opening, 453 ... Positioning part, 454 ... Screw recess, 462 ... Screw opening, 500 ... Cover, 501 ... Third circuit board, 502 ... Connector, 700 ... Lead wire, 800 ... Line filter, 900 ... Connector, 1000 ... Wireless communication device, 1001 Rib, 3081 ... upper groove, 3082 ... support surface, 3083 ... support surface, 3084 ... lower groove, 4011 ... first part, 4012 ... second part, 4013 ... first space, 4014 ... second space, AX ... rotation axis, CP ... center point, OX ... optical axis.

Claims (20)

A motor with a stator and a rotor that rotates with respect to the stator, and
The output unit driven by the rotor and
With a light emitting element
It has an incident surface and an ejection surface, and includes a diffusion optical member that diffuses light incident on the incident surface from the light emitting element and emits the light from the emission surface.
Electric work machine. The incident surface includes a diffuser that diffuses light.
The electric working machine according to claim 1. The diffuser includes a groove provided on the incident surface.
The electric working machine according to claim 2. The incident surface and the light emitting element are arranged in the first direction.
The diffusion optical member is long in the second direction orthogonal to the first direction.
The groove extends in a third direction orthogonal to each of the first direction and the second direction.
The electric working machine according to claim 3. A plurality of the grooves are provided in the second direction.
The electric working machine according to claim 4. The incident surface includes a first incident surface and a second incident surface.
The first incident surface and the second incident surface are arranged at intervals in the second direction.
The light emitting element includes a first light emitting element that causes light to be incident on the first incident surface and a second light emitting element that causes light to be incident on the second incident surface.
The electric working machine according to claim 4 or 5. The diffusion optical member has a flat surface and a recess provided on the flat surface.
The incident surface includes the inner surface of the recess.
The electric working machine according to any one of claims 4 to 6. The cross-sectional shape of the recess parallel to the predetermined surface including each of the first axis parallel to the first direction and the second axis parallel to the second direction is the same at each of the plurality of positions in the third direction. be,
The electric working machine according to claim 7. The shape of the recess is symmetrical with respect to a reference line extending in the third direction through the center of the recess in the second direction.
The electric working machine according to claim 7 or 8. The light emitting element is arranged so as to face the incident surface on the outside of the recess.
The electric working machine according to any one of claims 7 to 9. The entrance surface and the injection surface are arranged at different positions in the first direction.
Each of one end of the injection surface and the other end of the injection surface in the second direction are arranged at positions closer to the entrance surface in the first direction than the central portion of the injection surface.
The injection surface curves from the central portion toward the one end portion and from the central portion toward the other end portion.
The electric working machine according to any one of claims 4 to 10. A cover member having a notification opening and to which the diffusion optical member is fixed so that at least a part of the diffusion optical member is arranged in the notification opening.
The electric working machine according to any one of claims 1 to 11. The diffusion optical member has a passing portion through which at least a part of the light incident from the incident surface passes, and a connecting portion arranged at least a part around the passing portion.
The passage portion is arranged in the notification opening, and the connection portion is fixed to the cover member.
The electric working machine according to claim 12. The cover member has a partition wall and has a partition wall.
The incident surface of the diffusion optical member is arranged in the partition space defined by the partition wall.
The electric working machine according to claim 12 or 13. A motor accommodating portion for accommodating the motor is provided.
The cover member is arranged so as to cover an opening provided at the rear of the motor accommodating portion.
The electric working machine according to any one of claims 12 to 14. A grip portion extending downward from the motor accommodating portion is provided.
The diffuse optical member is arranged above the cover member.
The electric working machine according to claim 15. The diffuse optical member is fixed to the cover member so that at least a part of the ejection surface faces rearward.
The electric working machine according to any one of claims 12 to 16. At least a portion of the ejection surface is inclined downward toward the rear.
The electric working machine according to claim 17. A first circuit board that supports the light emitting element is provided.
The first circuit board is fixed to the cover member by the first screw.
The electric working machine according to any one of claims 12 to 18. An interface controller for controlling the light emitting element based on the work situation of the output unit is provided.
The electric working machine according to any one of claims 1 to 19.

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