WO2013187411A1

WO2013187411A1 - Power-driven device, power-driven-device system, and electric-power-tool management system

Info

Publication number: WO2013187411A1
Application number: PCT/JP2013/066092
Authority: WO
Inventors: 伊藤　達也; 西河　智雅; 弘識益子; 和隆岩田
Original assignee: 日立工機株式会社
Priority date: 2012-06-12
Filing date: 2013-06-11
Publication date: 2013-12-19

Abstract

The purpose of the present invention is to provide: a power-driven device provided with control modes capable of having the parameters thereof set, and a power-driven-device system; and an electric-power-tool management system with which a worker can set, externally from an electric power tool, optimal set parameters for each type of work performed by the electric power tool, to greatly improve work efficiency. An electronic pulse driver (1) is capable of being connected with an external device (9) via a communication cable (8). The electronic pulse driver (1) is provided with: a motor (3); a tip tool (53) operated by the motor (3); a program storage unit (83A) in which control modes are stored; a microcomputer (83); and a connection unit (72) which connects with the external device (9). The external device (9) is provided with a connection-receiving unit (93) which connects with the connection unit (72), and thus is capable of communicating with the electronic pulse driver (1) to modify parameters of the control modes.

Description

Power equipment, power equipment system, and power tool management system

The present invention relates to a power device, a power device system including a power device and an external device that can be connected to the power device, and a control of the power tool, and more particularly to a power tool management system capable of changing setting parameters.

In an impact tool that is an example of a conventional power device or electric tool, a structure in which an anvil is struck and a tip tool operates by a hammer that is rotated by the rotational force of a motor is known (see, for example, Patent Document 1 and Patent Document 2). ). The impact tool includes a pulse mode and an impact mode as a plurality of control modes.

JP 2011-31313 A JP 2010-99823 A

In the conventional impact tool, the user works by selecting the optimum mode for fastening. Specifically, the user has selected each mode by operating a dial provided on the impact tool. However, the detailed parameters of the pulse mode and the impact mode are set in advance, and the work width in each mode is narrow. Furthermore, even if a large number of control modes are provided, a control mode unnecessary for the user is installed.

Furthermore, conventional power tools can be equipped with various types of tip tools, and there are also various types of tool applications. Therefore, the required motor control varies depending on the type of the tip tool and the type of work. As a system for controlling the motor, there is a system in which a trigger switch is provided in the electric tool and the motor rotation speed is controlled by operating the trigger switch. For example, an example will be given for a case where a screw tightening operation is performed using a screwdriver as a tip tool. At the beginning of the screw tightening operation, the operator usually operates the trigger switch by a small amount while the screw is pressed against the workpiece, and rotates the motor by a small amount to position the screw tip at the target position. I do. Further, when the screw diameter is small or the screw length is short, the necessary torque is small and the working time is short, so that it is desirable that the motor rotation speed be easily adjusted in a low region. Therefore, it is desirable that the adjustment in the region where the number of rotations operable by the operation of the trigger switch (hereinafter referred to as trigger operation) is also low is easy. On the other hand, when the screw diameter is large or the screw length is long, the necessary torque is large and the working time is long. Therefore, it is desirable that the motor rotation speed be easily adjusted in a high region. . Therefore, it is desirable that the adjustment in the region where the number of rotations operable by the trigger operation is high is easy. The set value of the motor rotation speed with respect to the trigger switch operation amount is usually one relational expression. For this reason, there is only one trigger operation specification despite the different trigger operation specifications required for the type of screw, and work efficiency deteriorates if the trigger operation specifications are not appropriate.

An example is given for the case where bolting is performed using a wrench on the tip tool. In the case of the bolt tightening work, since the positioning work is not necessary, the motor rotation speed may be maximized immediately after the trigger operation is started, and adjustment of the motor rotation speed with respect to the trigger operation is not required. Therefore, the required characteristics are different from the specifications of the trigger operation at the time of screw tightening. In addition, there is an electric tool that is provided with a push button or the like on the electric tool so that the set rotational speed during operation can be switched. During the bolting operation, it is necessary to operate the tool at a predetermined rotation speed and keep the tightening torque at a constant value. The number of rotations at that time depends on the specifications of the bolt, and the set value must be changed as appropriate.

Therefore, an object of the present invention is to provide a power device and a power device system having a control mode in which parameters can be set. Another object of the present invention is to provide a power tool management system that enables a worker to set optimum setting parameters for various operations of a power tool from the outside of the power tool, and can greatly improve work efficiency. is there.

In order to achieve the above object, the present invention provides a power device including a drive unit, an output unit that is driven by the drive unit and acts dynamically on the outside, and a control unit that controls the drive unit. In the above, there is provided a power device characterized by comprising a communication means that allows the parameter constituting the control mode stored in the control unit to be set by accessing the control unit from outside.

According to such a configuration, the user can easily create a specific control mode suitable for various tasks by setting optimum parameters according to the work contents.

The control mode is preferably configured by combining a plurality of parameters that can be set from the outside.

According to such a configuration, even when only one parameter is changed, an optimal control mode cannot be realized. According to such a configuration, an optimal control mode is realized by changing a combination of a plurality of parameters. It becomes possible.

In another aspect of the present invention, a power device system comprising a power device and an external device connectable to the power device, wherein the power device uses a motor and the driving force of the motor as a tip tool. A drive unit for transmitting, a storage unit for storing a control mode for controlling driving of the motor, a control unit for controlling the motor based on the control mode, and a connection unit connectable to the external device, And the external device includes a connected portion connectable to the power device via the connection portion, and a setting portion capable of setting the parameter of the control mode. Is provided.

According to such a configuration, since the parameters of the control mode can be set by an external device, the operation of the electronic pulse driver 1 can be set in more detail, and the fastening operation can be performed under optimum conditions. Can do. As a result, it is possible to improve the workability of the tightening work by the power device and improve the feeling.

In addition, the driving unit includes a hammer driven by the motor and an anvil that holds the tip tool and rotates by being struck by the hammer, and the parameter is a hit between the hammer and the anvil. Preferably it is a period.

According to such a configuration, the hitting cycle can be set, so that the reaction of the power equipment during the fastening work can be reduced and workability can be improved. In addition, it is possible to set the hit frequency to a value that the user does not feel uncomfortable, and workability can be improved.

In addition, the control mode includes a pulse mode in which the hammer and the anvil are struck by rotating the motor in both directions, and the pulse mode can set parameters different from the normal hit and the normal hit. It is preferable to have a correction hit.

According to such a configuration, since a correction hit can be set, compared with a case where fastening is performed only in a normal pulse mode, by performing a correction hit after performing a normal hit, the fastener can be used as a processing member. It can be fastened stably. Thereby, a fastener can be fastened with the target torque.

In addition, the parameters of the correction batting include the striking cycle between the hammer and the anvil, the number of hits between the hammer and the anvil, and the torque of the hammer when the hammer strikes the anvil. It is preferable that at least one can be set.

According to such a configuration, it is possible to set at least one of the hit period, the number of hits, and the torque, so that the power device can be operated by control according to the user's request. As a result, it is possible to improve the workability of the tightening work by the power device and improve the feeling.

Further, it is preferable that the parameter is a total rotation speed of the tip tool after the motor is operated.

According to such a configuration, since the total number of rotations of the tip tool can be set, the control before and after the seating of the screw can be changed by setting the number of screw strips as the total number of rotations. As a result, it is possible to improve the workability of the tightening work by the power device and improve the feeling.

Further, it is preferable that the parameter is a rotation speed of the motor during a period set by the total number of rotations.

According to such a configuration, the rotation speed of the motor during the period set by the total number of rotations can be set, so that the power equipment can be operated by control according to the user's request. As a result, it is possible to improve the workability of the tightening work by the power device and improve the feeling.

The external device preferably includes a display unit that displays the parameter, and the display unit includes a graph display unit that can display the parameter related to the parameter as a horizontal axis and a vertical axis. .

According to such a configuration, since the external device includes the graph display unit, the user can visually recognize the control mode. This makes it easier to imagine the operation of the power equipment when setting parameters.

Further, it is preferable that the parameter is set as a ratio to the maximum capacity of the motor.

According to such a configuration, since the parameter is set at a ratio to the maximum capacity of the motor, a device for measuring output torque or the like is not necessary. Thereby, the number of parts can be reduced and a low-cost power equipment can be provided.

It is preferable that the power device further includes a communication conversion circuit that converts a communication signal when connected to the external device.

According to such a configuration, since the power device further includes the communication conversion circuit, it is not necessary to provide the communication conversion circuit in the cable connecting the connection portion and the connected portion. Thereby, a versatile cable can be used for communication between the power device and the external device.

In another aspect of the present invention, a motor, a drive unit that transmits a driving force of the motor to a tip tool, a control unit that controls the motor, a first housing that houses the motor and the drive unit, A housing having a second housing that houses the control unit, a handle unit that connects the first housing and the second housing, a communication unit that is housed in the second housing and capable of wireless communication with an external device, Provides power equipment.

According to such a configuration, since the communication unit is accommodated in the second housing, compared to the case where the communication unit is accommodated in the handle portion, the radio wave is not disturbed by the user's hand. As a result, the power device can stably communicate with the external device. Moreover, since the communication part is accommodated in the same 2nd housing as a control part, the wiring inside power equipment can be simplified.

Further, it is preferable that the control unit includes a control circuit board that controls the motor, and the communication unit is provided on the control circuit board.

According to such a configuration, since the communication unit is provided on the control circuit board, wiring for connecting the communication unit and the control unit is not necessary, and wiring inside the power equipment can be simplified. Furthermore, since the distance between the communication unit and the control unit is reduced, it is less likely to be affected by noise from the power equipment.

In another aspect of the present invention, there is provided a power device including a motor, a housing that houses the motor, and a drive unit that is housed in the housing and transmits a driving force of the motor to a tip tool, A power device capable of setting the total number of rotations of the tip tool after the motor is operated is provided.

According to such a configuration, since the total number of rotations of the tip tool after the motor is operated can be set, the power device can be operated by control according to the user's request. As a result, it is possible to improve the workability of the tightening work by the power device and improve the feeling.

Further, it is preferable that a connection unit connectable with an external device is further provided, and the total number of rotations can be set by the external device by being connected to the external device.

According to such a configuration, since the total number of revolutions can be set by an external device, it is not necessary to provide a circuit and a device for setting the total number of revolutions in the power device body. Thereby, the number of parts of a power equipment can be reduced and a low-cost power equipment can be provided.

In addition, it is preferable that the external device can set the initial rotation speed as a ratio with respect to the maximum output of the motor.

Further, it is preferable that the torque of the motor after the period set by the total number of rotations can be set.

Further, it is preferable that an initial rotation speed that is a rotation speed of the motor in a period set by the total rotation speed can be set.

According to such a configuration, the power device can be operated by control according to the user's request. As a result, it is possible to improve the workability of the tightening work by the power device and improve the feeling.

According to another aspect of the present invention, a power tool management system is provided. The power tool management system includes a power tool, a control circuit in the power tool that controls the power tool with a predetermined setting parameter, and the power tool that changes a setting value of the setting parameter from the outside of the power tool. Comprises a separate mobile device, and when the setting value of the setting parameter is changed from the mobile device to the power tool, the power tool and the mobile device perform wireless communication, and the power tool The setting parameter setting value can be changed when the operation is stopped, and the setting parameter setting value cannot be changed when the electric tool is operating.

In the above aspect, a switch is provided in the electric tool, and the state of the electric tool is switched between a changeable state and a non-changeable state of the setting parameter by operating the switch, and the state of the electric tool is changeable. The setting parameter can be changed when the power tool is in a state, and the setting parameter cannot be changed when the power tool is in the unchangeable state.

In the aspect, the power tool is provided with a notification unit, and when the communication is correctly performed between the power tool and the portable device and the setting parameter is correctly changed, the notification unit notifies the power tool. There should be. Moreover, the notification means may be a light that illuminates the tip of the power tool.

In the above aspect, it is preferable that the communication unit of the power tool for performing the wireless communication can only receive and the communication unit of the portable device can only transmit.

In the above aspect, the power tool includes a housing, a motor mounted in the housing, and a trigger operation unit, and controls the motor in response to an operation of the trigger operation unit. The rotation speed of the motor is adjusted according to the magnitude of the operation amount, the operation amount of the trigger operation unit and the rotation speed of the motor are defined by a predetermined relational expression, and the relational expression is the setting parameter, The relational expression may be changed by changing the setting parameter.

In the above aspect, the power tool has a housing, a motor mounted in the housing, and a maximum rotational speed that is an upper limit of a rotational speed that can be operated by the motor, and the motor is operated at the maximum rotational speed. It is preferable that the control circuit is controlled so that the maximum rotation speed is the setting parameter, and the maximum rotation speed is changed by changing the setting parameter. Further, it is preferable that a changeover switch for setting the maximum number of rotations is provided, and the maximum number of rotations can be switched to a plurality of different values by operating the changeover switch.

In the above aspect, the electric tool includes a housing, a motor mounted in the housing, a trigger operation unit, controls the motor in response to an operation of the trigger operation unit, and operates the motor. If the operation time after the trigger operation is performed and the operation of the motor is started reaches the automatic stop time, the motor is also operated even when the trigger operation is performed. It is preferable that the control circuit is controlled to stop the operation, the automatic stop time is the setting parameter, and the automatic stop time is changed by changing the setting parameter. In addition, it is preferable that a switch for setting the automatic stop time is provided, and the automatic stop time can be switched to a plurality of different values by operating the switch.

In the above aspect, the power tool includes a housing, a motor mounted in the housing, and a trigger operation unit, and controls the motor in response to an operation of the trigger operation unit. The motor is controlled by the control circuit with the target current value, the target current value is the setting parameter, and the target current value is changed by changing the setting parameter. There should be. It is preferable that a changeover switch for setting the target current value is provided, and the target current value can be switched to a plurality of different values by operating the changeover switch.

In the above aspect, the power tool includes a housing, a motor mounted in the housing, and a trigger operation unit, and controls the motor in response to an operation of the trigger operation unit. The motor is controlled by the control circuit at the automatic stop angle, the automatic stop angle is the setting parameter, and the automatic stop angle is changed by changing the setting parameter. There should be. Further, it is preferable that a changeover switch for setting the automatic stop angle is provided, and the automatic stop angle can be switched to a plurality of different values by operating the changeover switch.

It should be noted that an arbitrary combination of the above-described components and a conversion of the expression of the present invention between methods and systems are also effective as an aspect of the present invention.

According to the present invention, a power device and a power device system having a control mode in which parameters can be set can be provided. Furthermore, according to the present invention, it is possible to provide a power tool management system capable of significantly improving work efficiency by enabling an operator to set optimum setting parameters for various work of the power tool from the outside of the power tool. it can.

1 is a schematic perspective view of an electronic pulse driver according to a first embodiment of the present invention. Sectional drawing of the electronic pulse driver which concerns on the 1st Embodiment of this invention. Sectional drawing along III-III of FIG. 2 of the electronic pulse driver which concerns on the 1st Embodiment of this invention. Sectional drawing along III-III of FIG. 2 of the electronic pulse driver which concerns on the 1st Embodiment of this invention. The control block diagram of the electronic pulse driver which concerns on the 1st Embodiment of this invention. The figure which the electronic pulse driver which concerns on the 1st Embodiment of this invention is connected with the external apparatus via the communication cable. The window displayed on the display part of the external apparatus which concerns on the 1st Embodiment of this invention. The flowchart of the application software preserve | saved at the external apparatus which concerns on the 1st Embodiment of this invention. The flowchart of the application software preserve | saved at the external apparatus which concerns on the 1st Embodiment of this invention. The window displayed on the display part of the external apparatus which concerns on the modification of the 1st Embodiment of this invention. The window displayed on the smart phone which concerns on the modification of the 1st Embodiment of this invention. The flowchart of the application software preserve | saved at the external apparatus which concerns on the modification of the 1st Embodiment of this invention. Sectional drawing of the electronic pulse driver which concerns on the 2nd Embodiment of this invention. The control block diagram of the electronic pulse driver which concerns on the 2nd Embodiment of this invention. The figure which the electronic pulse driver which concerns on the 2nd Embodiment of this invention is connected with the external apparatus via the communication cable. Sectional drawing of the electronic pulse driver which concerns on the 3rd Embodiment of this invention. The control block diagram of the electronic pulse driver which concerns on the 3rd Embodiment of this invention. The graph displayed on the graph display area which concerns on the modification of this invention. It is an electric tool management system concerning a 4th embodiment of the present invention, and is an explanatory view showing an internal configuration of an electric tool as a side section. The top view of the portable apparatus which concerns on the 4th Embodiment of this invention. The block diagram which shows the structure of the drive control system of the motor in the 4th Embodiment of this invention. The table | surface which shows the setting value of automatic stop time in the 4th Embodiment of this invention. The table | surface which shows the setting value of the maximum rotation speed in the 4th Embodiment of this invention. The top view which shows the structure of the operation part in the 4th Embodiment of this invention. The graph of the fastening torque with respect to the fastening time and motor rotation speed at the time of bolt fastening operation | work in the 4th Embodiment of this invention. The graph of the specification of the screw with respect to the fastening time and the optimal rotation speed of a motor at the time of the screw fastening operation | work in the 4th Embodiment of this invention. The graph which showed the relationship of the PWM duty ratio corresponding to the detection signal of the trigger operation amount (stroke) in the 4th Embodiment of this invention. The flowchart of the motor control in the 4th Embodiment of this invention. The table | surface which shows the setting value of the automatic stop angle in the 4th Embodiment of this invention. The flowchart of another motor control in the 4th Embodiment of this invention.

Hereinafter, regarding the configuration of the electronic pulse driver 1 which is an example of the power device system according to the first embodiment of the present invention and the external device 9 (FIG. 6) connected to the electronic pulse driver 1 via the communication cable 8, This will be described with reference to FIGS.

As shown in FIGS. 1 and 2, the electronic pulse driver 1 is mainly composed of a housing 2, a motor 3, a hammer part 4, an anvil part 5, an inverter circuit 6, and a control part 7. Yes. The housing 2 is made of resin and forms an outer shell of the electronic pulse driver 1, and includes a substantially cylindrical body portion 21, a handle portion 22 extending from the body portion 21, and a substrate housing portion connected to the handle portion 22. 23 mainly. The body portion 21 corresponds to the first housing of the present invention, and the substrate housing portion 23 corresponds to the second housing of the present invention. The hammer part 4 and the anvil part 5 correspond to a drive part and an output part of the present invention. The electronic pulse driver 1 is an example of a power device according to the present invention.

In the body portion 21, the motor 3 is arranged so that the longitudinal direction thereof coincides with the axial direction of the motor 3, and the hammer portion 4 and the anvil portion 5 are arranged side by side toward one end side in the axial direction of the motor 3. Has been. In the following description, the anvil portion 5 side is defined as the front side, the motor 3 side is defined as the rear side, and a direction parallel to the axial direction of the motor 3 is defined as the front-rear direction. Further, the body part 21 side is defined as the upper side, the handle part 22 side is defined as the lower side, and the direction in which the handle part 22 extends from the body part 21 is defined as the vertical direction. Further, a direction orthogonal to the front-rear direction and the up-down direction is defined as the left-right direction.

A metal hammer case 24 in which the hammer part 4 and the anvil part 5 are incorporated is disposed at the front side position in the body part 21. The hammer case 24 has a substantially funnel shape in which the diameter gradually decreases toward the front, an opening 24a is formed at the front end portion, and a metal portion 24A is provided on the inner wall that defines the opening 24a. Yes.

Also, the body portion 21 is formed with a plurality of intake ports 21a and exhaust ports 21b through which a later-described fan 32 sucks and discharges outside air into the body portion 21 (FIG. 1). The motor 3 is cooled by the outside air. An inverter circuit 6 is provided on the rear side of the motor 3.

The handle portion 22 extends downward from a substantially central position in the front-rear direction of the body portion 21 and is configured integrally with the body portion 21. A trigger 25 is provided above the handle portion 22 and at the front side position. A forward / reverse switching lever 28 for switching the rotation direction of the motor 3 is provided behind the trigger 25.

The substrate housing unit 23 is provided with a control unit 7 that controls the electronic pulse driver 1. A battery 26 is detachably provided in the substrate housing part 23. The battery 26 is attached / detached to / from the substrate housing portion 23 by attachment / detachment switches 23A provided on both side surfaces of the substrate housing portion 23 in the left-right direction. As shown in FIG. 1, a mode switching panel 27 that switches the control mode of the electronic pulse driver 1 is provided on the left side surface of the substrate housing portion 23. The mode switching panel 27 is provided with a mode switching switch 27A that switches the control mode when pressed, and a mode display lamp 27B that lights a control mode that is set according to the pressing of the mode switching switch 27A. In the electronic pulse driver 1 of the present embodiment, four control modes A to D can be set.

As shown in FIG. 2, the motor 3 is a brushless motor mainly composed of a rotor 3A having an output shaft portion 31 and a stator 3B arranged to face the rotor 3A. It arrange | positions in the trunk | drum 21 so that it may correspond with the front-back direction. The rotor 3A includes a permanent magnet 3C, and the stator 3B includes a coil 3D that faces the permanent magnet 3C (FIG. 5). The output shaft portion 31 protrudes forward and backward of the rotor 3A, and is rotatably supported on the body portion 21 by a bearing at the protruding portion. A fan 32 that rotates coaxially and integrally with the output shaft portion 31 is provided at a location protruding to the front side of the output shaft portion 31. Further, a pinion gear 31A is connected to the output shaft portion 31 at the foremost end position of the location. It is provided so as to rotate coaxially.

The inverter circuit 6 includes an inverter circuit board 61, a plurality of switching elements 62 provided on the inverter circuit board 61 and protruding rearward, and a hall element 63 for detecting the position of the motor 3. Since the air inlet 21a is located in the vicinity of the switching element 62, the switching element 62 can be efficiently cooled.

The hammer section 4 is mainly composed of a gear mechanism 41 and a hammer 42 and is built in the front side of the motor 3 in the hammer case 24. The gear mechanism 41 includes a planetary gear mechanism 41B having an outer gear 41A. The outer gear 41 </ b> A is built in the hammer case 24 and is fixed to the body portion 21. The planetary gear mechanism 41B is disposed in the outer gear 41A so as to mesh with the outer gear 41A, and uses the pinion gear 31A as a sun gear.

The hammer 42 is defined on the front surface of the planet carrier of the planetary gear mechanism 41B, protrudes toward the front side, and is disposed at a position shifted from the rotation center of the planetary gear mechanism 41B planet carrier. The planetary gear mechanism 41B has a first engagement protrusion 42A and a second engagement protrusion (not shown) located at the counter electrode across the rotation center of the planet carrier.

The anvil portion 5 is disposed in front of the hammer portion 4 and mainly includes a tip tool mounting portion 51 and an anvil 52. The tip tool mounting portion 51 is formed in a cylindrical shape and is rotatably supported in the opening 24a of the hammer case 24 via a metal portion 24A. The tip tool mounting portion 51 is provided with a perforation 51a into which the tip tool 53 is inserted in the front-rear direction, and a chuck 51A for detachably holding the tip tool 53 is provided at the front end portion.

The anvil 52 is configured to be integrated with the tip tool mounting portion 51 in the hammer case 24 at the rear of the tip tool mounting portion 51, and is disposed opposite to the rotation center of the tip tool mounting portion 51. It has the 1st to-be-engaged protrusion 52A and the 2nd to-be-engaged protrusion 52B which protruded toward. When the hammer 42 rotates, the first engagement protrusion 42A and the first engagement protrusion 52A collide with each other, and at the same time, the second engagement protrusion (not shown) and the second engagement protrusion 52B collide, The rotational force of the hammer 42 is transmitted to the anvil 52.

The control unit 7 mainly includes a control circuit board 71, a microcomputer 83 provided on the upper surface of the control circuit board 71, and a connection part 72 provided on the lower surface of the control circuit board 71. The connecting portion 72 is provided so as to protrude downward from the lower surface of the control circuit board 71, and can connect the communication cable 8 (FIG. 6). As shown in FIGS. 3 and 4, the connection portion 72 includes a lid 73 and a connection terminal 74, and the connection terminal 74 is configured to be openable and closable by the lid 73. At the time of the fastening operation, as shown in FIG. 3, it is possible to prevent dust and the like from adhering to the connection terminal 74 by closing the connection terminal 74 with the lid 73. When connecting to the external device 9, the communication cable 8 can be connected to the connection terminal 74 by opening the lid 73 as shown in FIG. 4. The connection unit 72 corresponds to the communication unit of the present invention.

As shown in FIG. 5, the inverter circuit 6 is composed of six switching elements 62-1 to 62-6 such as FETs connected in a three-phase bridge format.

The control unit 7 is connected to the battery 26 and connected to the trigger 25, the inverter circuit 6, the mode changeover switch 27A, the mode display lamp 27B, the forward / reverse changeover lever 28, and the connection terminal 74. The control unit 7 also includes a current detection circuit 75, a switch operation detection circuit 76, an applied voltage setting circuit 77, a rotation direction setting circuit 78, a mode setting circuit 79, a rotor position detection circuit 80, and a rotation speed. A detection circuit 81 and an LED lighting circuit 82 are provided. The microcomputer 83 includes a program storage unit 83A that stores a control mode for controlling the electronic pulse driver 1 and various parameters. The program storage unit 83A corresponds to the storage unit of the present invention.

The hall element 63 is provided at a position facing the permanent magnet 3C of the rotor 3A, and is arranged at predetermined intervals (for example, every angle of 60 °) in the circumferential direction of the rotor 3A.

In the present embodiment, the motor 3 is a three-phase brushless DC motor, and the rotor 3A has a permanent magnet 3C including a plurality of sets (two sets in the present embodiment) N poles and S poles, and a coil 3D. Are star-connected three-phase stator windings U, V, and W.

The gates of the switching elements 62-1 to 62-6 of the inverter circuit 6 are connected to the control signal output circuit 84, and the drains or sources of the switching elements 62-1 to 62-6 are the stator windings of the stator 3B. Connected to U, V, W. The six switching elements 62-1 to 62-6 perform a switching operation by a switching element drive signal input from the microcomputer 83 via the control signal output circuit 84, and are applied to the inverter circuit 6 by the DC voltage of the battery 26. Is supplied to the stator windings U, V, and W as three-phase (U-phase, V-phase, and W-phase) voltages Vu, Vv, and Vw. Specifically, the stator windings U, V energized by the output switching signals H1, H2, H3 input from the control signal output circuit 84 to the positive power supply side switching elements 62-1, 62-2, 62-3. , W, that is, the rotation direction of the rotor 3A is controlled. Further, stator windings U, V are obtained by pulse width modulation signals (PWM signals) H4, H5, H6 inputted from the control signal output circuit 84 to the negative power supply side switching elements 62-4, 62-5, 62-6. , The amount of power supplied to W, that is, the rotational speed of the rotor 3A is controlled.

The current detection circuit 75 detects the current value supplied to the motor 3 by the resistor 75A and outputs it to the microcomputer 83. The switch operation detection circuit 76 detects the presence or absence of the operation of the trigger 25 and outputs it to the microcomputer 83. The applied voltage setting circuit 77 outputs a signal corresponding to the operation amount of the trigger 25 to the microcomputer 83.

When the rotation direction setting circuit 78 detects the switching of the forward / reverse switching lever 28, the rotation direction setting circuit 78 transmits a signal for switching the rotation direction of the motor 3 to the microcomputer 83. The mode setting circuit 79 outputs the control mode set by the mode changeover switch 27A to the microcomputer 83. The microcomputer 83 controls the electronic pulse driver 1 based on the control mode input from the mode setting circuit 79.

The rotor position detection circuit 80 detects the rotational position of the rotor 3A based on the signal from the hall element 63 and outputs it to the microcomputer 83. The rotation speed detection circuit 81 detects the rotation speed of the rotor 3 </ b> A based on a signal from the rotor position detection circuit 80 and outputs the rotation speed to the microcomputer 83.

Although not shown, the microcomputer 83 includes a central processing unit (CPU) for outputting a drive signal based on a processing program and data, a RAM for temporarily storing data, and a timer. The microcomputer 83 outputs the output switching signals H1, H2, and H3 based on the signals from the rotation direction setting circuit 78 and the rotor position detection circuit 80, and the pulse width modulation signal (PWM signal) based on the signal from the applied voltage setting circuit 77. H4, H5, and H6 are generated and output to the control signal output circuit 84. The PWM signal may be output to the positive power supply side switching elements 62-1 to 62-3, and the output switching signal may be output to the negative power supply side switching elements 62-4 to 62-6.

The program storage unit (hereinafter referred to as ROM) 83A stores at least four control modes (control programs) for controlling the motor 3. Then, four control modes among at least four control modes stored in the ROM 83A are stored in the RAM as selectable control modes. The control mode selected from the four control modes by the mode switch 27A is displayed on the mode display lamp 27B as the currently selected control mode. The CPU reads out a control mode corresponding to the selected control mode from the ROM 83A and controls the motor 3.

As shown in FIG. 6, the communication cable 8 includes a terminal box 85 provided at one end of the communication cable 8 and connectable to the connection terminal 74, a communication conversion circuit 86 housed in the terminal box 85, and the communication cable 8. An external device connection portion 87 provided at the end and connectable to the external device 9 is provided. The communication conversion circuit 86 is a circuit for converting the communication signal output from the electronic pulse driver 1 into a signal that can be read by the external device 9. The external device connection unit 87 is, for example, a USB (Universal Serial Bus) or a serial cable.

The external device 9 includes a display unit 91, an input unit 92, and a connected unit 93 that can be connected to the external device connection unit 87. The external device 9 is a PC (personal computer), for example, and includes a CPU, a ROM, a RAM, and the like (not shown). The external device 9 can communicate with the electronic pulse driver 1 by connecting to the electronic pulse driver 1 via the communication cable 8. When the electronic pulse driver 1 is connected to the external device 9, the battery 26 is in a removed state, but power is supplied to the electronic pulse driver 1 from the external device 9 via the communication cable 8. Therefore, the mode display lamp 27B of the mode switching panel 27 is in a state where the currently selected control mode is lit. In the external device 9, application software for setting the control mode of the electronic pulse driver 1 is stored in the ROM, and when the software is started, a window 94 shown in FIG. 7 is displayed.

The window 94 includes a button area 95, a clutch mode parameter setting area 96, a clutch mode graph display area 97, a normal hit parameter setting area 98, a corrected hit parameter setting area 99, and a pulse mode graph display area 100. I have. On the upper right of the window 94, an end button 94A is provided. The clutch mode graph display area 97 and the pulse mode graph display area 100 correspond to the graph display section of the present invention. The CPU and window 94 of the external device 9 correspond to the setting unit of the present invention.

The control mode of this embodiment is mainly classified into a drill mode, a clutch mode, and a pulse mode.

The drill mode is a mode in which the hammer 42 and the anvil 52 are integrally rotated, and is mainly used when a wood screw is fastened. The current flowing through the motor 3 increases as the fastening proceeds.

The clutch mode is a mode in which the tip tool 53 is rotated with a preset torque after the tip tool 53 has rotated a predetermined number of revolutions while the hammer 42 and the anvil 52 are integrally rotated. It is used when attaching importance to accurate torque, such as when fastening fasteners that appear on the exterior after fastening.

In the pulse mode, when the current flowing in the motor 3 increases to a predetermined value (predetermined torque) while the hammer 42 and the anvil 52 are integrally rotated, the forward rotation and the reverse rotation of the motor 3 are alternately switched and hit. This mode is used to fasten a fastener, and is mainly used for fastening a long screw used in a place that does not appear in the appearance. Thereby, a strong fastening force can be supplied, and at the same time, a repulsive force from the processed member can be reduced. In the application software of the first embodiment, each parameter of the clutch mode and the pulse mode can be set.

In the button area 95, a communication button 95A, a read button 95B, a set value read button 95C, a save button 95D, and a set send button 95E are provided. The communication button 95 </ b> A is displayed as “communication” immediately after the software is started, and when pressed, the external device 9 starts communication with the electronic pulse driver 1. When in communication with the electronic pulse driver 1, “disconnect” is displayed, and when pressed, the external device 9 interrupts communication with the electronic pulse driver 1.

The read button 95B is a button for reading various parameters stored in the ROM of the external device 9. The set value reading button 95 </ b> C is a button for reading various parameters stored in the electronic pulse driver 1. When the set value reading button 95C is pressed, parameters stored in the electronic pulse driver 1 are displayed in an area 96-100. Specifically, the parameter of the control mode selected by the mode display lamp 27B is displayed on the window 94. The save button 95D is a button for saving each parameter of the

areas

96, 98, and 99 in the ROM of the external device 9. The setting transmission button 95E is a button for transmitting each parameter of the

regions

96, 98, and 99 to the electronic pulse driver 1. When the setting transmission button 95E is pressed, each parameter of the control mode selected by the mode display lamp 27B is updated to the parameter displayed in the window 94.

In the clutch mode, torque, initial rotation speed, and initial rotation speed can be set as parameters. By pressing a selection button 96A at the top of the clutch mode parameter setting area 96, the clutch mode can be selected as the control mode. The torque indicates the output torque of the motor 3 after the rotation speed set by the initial rotation speed has elapsed, and can be set at a ratio when the maximum output of the motor 3 is 100%. The torque can be set by operating the torque setting slide bar 96B or by inputting a numerical value to the torque input unit 96C through the input unit 92. The initial rotational speed is the total rotational speed at which the tip tool 53 has rotated since the user pulled the trigger 25. That is, the initial rotation speed is a value indicating how many times the tip tool 53 has rotated since the electronic pulse driver 1 was operated. The microcomputer 83 calculates the rotational speed of the tip tool 53 in response to a signal from the rotational speed detection circuit 81. The initial rotational speed can be set by operating the initial rotational speed setting slide bar 96D or by inputting a numerical value into the initial rotational speed input unit 96E. The initial rotation speed is the rotation speed of the motor 3 during the period set by the initial rotation speed, and can be set at a ratio when the maximum rotation speed of the motor 3 is 100%. The initial rotation speed can be set by operating the initial rotation speed setting slide bar 96F or by inputting a numerical value to the initial rotation speed input unit 96G.

In the present embodiment, the clutch mode graph display area 97 displays a surface graph of the rotation speed of the motor 3 on the vertical axis and the number of rotations of the tip tool 53 on the horizontal axis. In the clutch mode parameter setting area 96, the torque is set to 52%, the initial rotational speed is 24 times, and the initial rotational speed is set to 75%. This means that the motor 3 rotates at a speed of 75% until the tip tool 53 rotates 24 times, and thereafter rotates at a torque of 52%. In the graph of the clutch mode graph display area 97, the speed of the motor 3 decreases with the number of rotations being 24. When performing a general screw tightening operation, the tip tool 53 is rotated at a high speed until the screw is seated to shorten the screw tightening time, and is tightened with a desired torque after the seat is seated. In this embodiment, since the initial rotational speed can be set, the rotational speed and torque of the motor 3 can be changed before and after the screw is seated by setting the initial rotational speed in accordance with the number of screws. it can. As a result, it is possible to shorten the screw tightening operation time and improve the work efficiency.

The pulse mode includes normal hitting and corrected hitting, and the torque, the number of hits, and the hitting cycle can be set as parameters in normal hitting and corrected hitting, respectively. In the pulse mode, it is possible to set whether or not to use the correction hit, and it is possible to perform only the normal hit operation. By pressing the selection button 98A at the top of the normal hitting parameter setting area 98, the pulse mode can be selected as the control mode. The torque is the torque of the motor 3 when the hammer 42 strikes the anvil 52 when the motor 3 alternately switches between forward rotation and reverse rotation, and is set at a ratio when the maximum output of the motor 3 is 100%. be able to. The torque can be set by operating the torque setting slide bar 98B or by inputting a numerical value to the torque input unit 98C. The number of hits is the number of times the hammer 42 hits the anvil 52. When the set number of hits is completed, the normal hit is changed to the corrected hit. The microcomputer 83 detects an impact based on the current value from the current detection circuit 75. When the correction hit is not performed, the motor 3 automatically stops. The number of strokes can be set by operating the stroke number setting slide bar 98D or by inputting a numerical value to the stroke number input unit 98E. The striking cycle is a cycle in which the hammer 42 strikes the anvil 52. The striking cycle is a parameter related to the feeling of the electronic pulse driver 1 during the fastening operation, and can be set at a ratio when the shortest cycle when the hammer 42 strikes the anvil 52 is 100%. The maximum cycle is determined by the characteristics of the motor 3, the structure of the hammer 42 and the anvil 52, and the like. The striking cycle can be set by operating the striking cycle setting slide bar 98F or by inputting a numerical value to the striking cycle input unit 98G.

In the correction hitting parameter setting area 99, the correction hitting can be performed by selecting the selection button 99A at the top. The correction batting is a batting performed after the hammer 42 bakes the anvil 52 by the batting number set in the batting number input unit 98E. By performing the correction hit, loosening of the screw after the normal hit with respect to the processed member can be prevented, and the screw can be tightened at a value closer to the torque set by the torque input portion 98C. In the correction hitting, the hitting operation is generally performed a plurality of times with a smaller torque than in the normal hitting. The correction hitting torque can be set by operating the torque setting slide bar 99B or by inputting a numerical value to the torque input unit 99C. The number of hits for correction batting can be set by operating the batting number setting slide bar 99D or by inputting a numerical value into the batting number input unit 99E. The hitting period of the corrected hitting can be set by operating the hitting period setting slide bar 99F or by inputting a numerical value into the hitting period input unit 99G.

In the present embodiment, in the pulse mode graph display area 100, a vertical axis represents a striking cycle and a horizontal axis represents a scatter diagram of torque of the motor 3. In the graph, a region A surrounded by a solid line is a parameter setting range determined by the shape of the motor 3, the hammer 42, the shape of the anvil 52, and the like. One of the points in the area A indicates a normal hit, and the other indicates a corrected hit.

FIG. 8 shows a flowchart after starting the application software installed in the external device 9. When the application software is activated, first, it enters an input standby state (S1). Next, it is determined whether or not the end button 94A is pressed (S2). If the end button 94A is pressed (S2: YES), the application ends. If the end button 94A is not pressed (S2: NO), it is determined whether or not the communication button 95A is pressed (S3).

If the communication button 95A is not pressed (S3: NO), the process returns to the input standby state (S1). When the communication button 95A is pressed (S3: YES), it is determined whether or not the electronic pulse driver 1 is connected to the external device 9 (S4). When the electronic pulse driver 1 is not connected to the external device 9 (S4: NO), it returns to the input standby state (S1). When the electronic pulse driver 1 is connected to the external device 9 (S4: YES), connection processing between the electronic pulse driver 1 and the external device 9 is performed. When the connection processing between the electronic pulse driver 1 and the external device 9 is completed, the display of the communication button 95A changes from “communication” to “disconnect”, and again enters an input standby state (S6).

Next, it is determined which of the plurality of buttons in the button area 95 has been pressed. Specifically, it is determined whether or not the setting transmission button 95E has been pressed (S7). If pressed (S7: YES), the parameters displayed in the

areas

96, 98, 99 at this time are transmitted to the electronic pulse driver 1 (S8). Thereby, the mode in which the mode display lamp 27B of the mode switching panel 27 is lit is updated. Thereafter, the process returns to S6 again to enter the input standby state. If not pressed (S7: NO), it is determined whether or not the save button 95D is pressed (S9).

When the save button 95D is pressed (S9: YES), each parameter displayed in the

areas

96, 98, 99 at this time is saved in the ROM of the external device 9 (S10). Thereafter, the process returns to S6 again to enter the input standby state. If not pressed (S9: NO), it is determined whether or not the set value reading button 95C has been pressed (S11). When pressed (S11: YES), the mode setting circuit 79 reads the parameters of the mode currently set in the electronic pulse driver 1 among the four modes stored in the ROM 83A of the electronic pulse driver 1 (S11: YES). S12). Then, each parameter read from the electronic pulse driver 1 is reflected in the area 96-100 (S13). Thereafter, the process returns to S6 again to enter the input standby state. If the set value reading button 95C has not been pressed (S11: NO), it is determined whether or not the read button 95B has been pressed (S14).

When the read button 95B is pressed (S14: YES), parameters of the designated control mode among the plurality of control modes stored in the ROM of the external device 9 are read (S15), and the area 96-100 is read. Reflect (S13). Thereafter, the process returns to S6 again to enter the input standby state. If the read button 95B has not been pressed (S14: NO), it is determined whether or not the communication button 95A has been pressed in a state of “disconnected” (S16). When the button is pressed (S16: YES), the communication between the electronic pulse driver 1 and the external device 9 is disconnected (S17). Thereafter, the process returns to S1 again to enter the input standby state. If not pressed (S16: NO), it is determined whether or not the end button 94A is pressed (S18). When the end button 94A is pressed (S18: YES), the communication between the electronic pulse driver 1 and the external device 9 is disconnected (S19), and the application is terminated. If it is not pressed (S18: NO), the process returns to S6 again to enter an input standby state.

At the time of input standby in S6, as shown in FIG. 9, each parameter of the

regions

96, 98, 99 is reflected in the graphs of the

graph display regions

97, 100 as shown in FIG. Specifically, in the input standby state, it is determined whether or not the slide bars 96B, 96D, 96F, 98B, 98D, 98F, 99B, 99D, 99F have been operated (S21). When operated (S21: YES), the numerical value of the input unit is changed according to the position of the slide bar (S22). Based on the changed numerical values, the graphs displayed in the

graph display areas

97 and 100 are changed (S23). Thereafter, the input standby state is entered again. If it is not operated (S21: NO), it is determined whether or not a numerical value is input to the

input units

96C, 96E, 96G, 98C, 98E, 98G, 99C, 99E, 99G (S24).

If no numerical value is input to the input unit (S24: NO), the process proceeds to S7. If it is input (S24: YES), the position of the slide bar is changed based on the input numerical value, and the graphs displayed in the

graph display areas

97 and 100 are changed based on the changed numerical value ( S23). Thereafter, the process proceeds to S7.

According to such a configuration, since the parameters constituting the control mode can be set by accessing the control unit 7 from the external device 9, the user himself / herself can set various parameters according to the work content. It is possible to easily create a specific control mode suitable for work.

According to such a configuration, since the external device 9 can set a plurality of parameters, even when only one parameter is changed, even when the optimal control mode cannot be realized, the combination of the plurality of parameters can be changed. An optimal control mode can be realized.

According to such a configuration, since the parameters of the control mode can be set by the external device 9, the operation of the electronic pulse driver 1 can be set in more detail, and the fastening operation is performed under optimum conditions. be able to. Thereby, the workability | operativity of the fastening operation | work by the electronic pulse driver 1 and the improvement of feeling can be aimed at.

According to such a configuration, it is possible to set the pulse mode striking cycle, so that it is possible to reduce the reaction of the electronic pulse driver 1 during the fastening operation and to improve the workability.

According to such a configuration, it is possible to set a correction hit in the pulse mode. Therefore, compared with the case where the fastening is performed only in the normal pulse mode, the screw is processed by performing the correction hit after performing the normal hit. It can be stably fastened with the member. Thereby, a screw can be fastened with the target torque.

According to such a configuration, the hitting period, the number of hits, and the torque can be set, so that the electronic pulse driver 1 can be operated by control according to the user's request. Thereby, the workability | operativity of the fastening operation | work by the electronic pulse driver 1 and the improvement of feeling can be aimed at.

According to such a configuration, since the total number of rotations of the tip tool 53 can be set, the control before and after the seating of the screw can be changed by setting the number of screw strips as the total number of rotations. Thereby, the workability | operativity of the fastening operation | work by the electronic pulse driver 1 and the improvement of feeling can be aimed at.

According to such a configuration, since the rotation speed of the motor 3 during the period set by the total number of rotations can be set, the electronic pulse driver 1 can be operated by control according to the user's request. Thereby, the workability | operativity of the fastening operation | work by the electronic pulse driver 1 and the improvement of feeling can be aimed at.

According to such a configuration, since the external device 9 includes the clutch mode graph display area 97 and the pulse mode graph display area 100, the user can visually recognize the control mode. This makes it easier to imagine the operation of the electronic pulse driver 1 when setting parameters.

According to such a configuration, the torque, the initial rotation speed, and the striking cycle are set in proportion to the maximum capacity of the brushless motor, so that no device or the like for measuring the output torque or the like is required. Thereby, the number of parts can be reduced and the low-cost electronic pulse driver 1 can be provided.

According to such a configuration, since the parameter of the control mode can be set by the external device 9, it is not necessary to provide a circuit and a device for setting the parameter in the electronic pulse driver 1 main body. Thereby, the number of parts of the electronic pulse driver 1 can be reduced, and the low-cost electronic pulse driver 1 can be provided.

Next, a modification of the first embodiment of the present invention will be described with reference to FIGS. The same configurations as those of the first embodiment are denoted by the same reference numerals and description thereof is omitted. In the modification, the configuration of

windows

194 and 294 displayed on the display unit 91 of the external device 9 is different from that of the first embodiment.

In the window 194, a tab area 195 is provided below the button area 95. The tab area 195 has a drill mode tab 195A, a clutch mode tab 195B, and a pulse mode tab 195C. In the modification, three tabs are provided, but four or more tabs may be provided. For example, a plurality of pulse modes such as a first pulse mode and a second pulse mode may be provided even in the pulse mode.

FIG. 10 shows a state where the drill mode tab 195A is pressed. At this time, a parameter setting area 196 and a graph display area 197 are displayed in the window 194. In the drill mode, torque and rotation speed can be set as parameters. When the tip tool 53 rotates by the set number of rotations, the motor 3 automatically stops. The torque can be set by operating the torque setting slide bar 196A or by inputting a numerical value to the torque input unit 196B. The rotation speed can be set by operating the rotation speed setting slide bar 196C or by inputting a numerical value to the rotation speed input unit 196D.

The graph display area 197 displays the parameters input to the parameter setting area 196 as a graph. In the graph display area 197, a surface graph in which the vertical axis represents torque and the horizontal axis represents the rotational speed is displayed.

Application software can also be installed on tablet devices such as smartphones. FIG. 11 shows a window 294 in which the application software according to the modification of the present embodiment is activated on the smartphone.

The window 294 includes a communication button 95A, an end button 94A, a tab area 195, a parameter setting area 196, a button display button 295, and a graph display button 296. When the button display button 295 is pressed, a new window including a read button 95B, a set value read button 95C, a save button 95D, and a setting send button 95E is displayed. When the graph display button 296 is pressed, a new window with a graph is displayed.

Next, FIG. 12 shows a flowchart of application software in the modification. In the modified example, when the input standby state of S6 in FIG. 8 is entered, it is determined which tab in the tab area 195 has been pressed. Specifically, it is determined whether or not the clutch mode tab 195B has been pressed (S121). When the button is pressed (S121: YES), a clutch mode setting screen is displayed in the window 194 (S122). Specifically, the clutch mode parameter setting area 96 of the first embodiment is displayed in the parameter setting area 196, and the clutch mode graph display area 97 is displayed in the graph display area 197. Thereafter, the process proceeds to S21.

If the clutch mode tab 195B is not pressed (S121: NO), it is determined whether or not the pulse mode tab 195C is pressed (S123). When the button is pressed (S123: YES), a pulse mode setting screen is displayed in the window 194 (S124). Specifically, the normal hitting parameter setting area 98 and the corrected hitting parameter setting area 99 of the first embodiment are displayed in the parameter setting area 196, and the pulse mode graph display area 100 is displayed in the graph display area 197, respectively. Thereafter, the process proceeds to S21.

When the pulse mode tab 195C is not pressed (S123: NO), it is determined whether or not the drill mode tab 195A is pressed (S125). When the button is pressed (S125: YES), a screen as shown in FIG. 10 is displayed on the display unit 91 (S126), and the process proceeds to S21. If it has not been pressed (S125: NO), the input standby state is entered again.

When the user presses the set value reading button 95C (S11: YES), the tab in the tab area 195 is automatically switched to the control mode currently selected by the electronic pulse driver 1. For example, when the drill mode is selected by the electronic pulse driver 1, the screen automatically switches to a screen as shown in FIG. 10 when the set value is read.

Next, an electronic pulse driver 201 according to the second embodiment will be described with reference to FIGS. About the same structure as 1st Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

The control circuit board 71 of the electronic pulse driver 201 includes a communication conversion circuit 285. As shown in FIG. 14, the communication conversion circuit 285 is connected to the microcomputer 83 and the connection terminal 74. The communication conversion circuit 285 is a circuit for converting a signal from the external device 9 into a signal readable by the microcomputer 83 and converting a signal from the microcomputer 83 into a signal readable by the external device 9, for example, An AD conversion circuit or the like is used.

When connecting the electronic pulse driver 201 and the external device 9, as shown in FIG. 15, both are connected using a communication cable 208 that does not include the communication conversion circuit 86 of the first embodiment.

According to such a configuration, since the electronic pulse driver 201 further includes the communication conversion circuit 86, it is not necessary to provide a signal conversion circuit in the cable connecting the connection portion and the connected portion. Thereby, the communication cable 208 which has versatility can be used for communication between the electronic pulse driver 201 and the external device 9.

Next, an electronic pulse driver 301 according to a third embodiment will be described with reference to FIGS. About the same structure as 1st Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

The control circuit board 71 of the electronic pulse driver 301 includes a wireless module 385. The wireless module 385 is accommodated in the substrate accommodating portion 23. The electronic pulse driver 301 can wirelessly communicate with the external device 9 via the wireless module 385. As the wireless communication, for example, Bluetooth (registered trademark), wireless LAN, Zigbee (registered trademark), or the like is employed. As shown in FIG. 17, the wireless module 385 is connected to the microcomputer 83. Thereby, the electronic pulse driver 1 can communicate with a PC or tablet device on which a wireless communication device is mounted. The wireless module 385 corresponds to the communication unit of the present invention.

According to such a configuration, since the wireless module 385 is accommodated in the substrate accommodating portion 23, compared with the case where it is accommodated in the handle portion 22, the radio wave is not disturbed by the user's hand. Thereby, the electronic pulse driver 301 can communicate with the external device 9 stably. Further, since the wireless module 385 is accommodated in the same substrate accommodating portion 23 as the control portion 7, the wiring inside the electronic pulse driver 301 can be simplified.

According to such a configuration, since the wireless module 385 is provided on the control circuit board 71, wiring for connecting the wireless module 385 and the control unit 7 becomes unnecessary, and wiring inside the electronic pulse driver 301 is simplified. Can do.

Next, a fourth embodiment of the present invention will be described in detail with reference to FIGS. In addition, the same code | symbol is attached | subjected to the same or equivalent component, member, process, etc. which are shown by each drawing, and the overlapping description is abbreviate | omitted suitably. In addition, the embodiments do not limit the invention but are exemplifications, and all features and combinations thereof described in the embodiments are not necessarily essential to the invention.

FIG. 19 shows an overall configuration of the electric power tool management system (power equipment system) according to the embodiment of the present invention, which is an example of a power equipment that works by driving various tip tools with a built-in motor. 401 and a mobile device 459 which is a separate accessory device. In FIG. 19, the internal configuration of the electric power tool 401 is shown as a side sectional view. The electric tool 401 is, for example, an impact driver that operates by connecting the AC cord 409 to an AC power source such as a commercial power source. The mechanical configuration for rotationally driving the tip tool in the impact driver may be known, but an example will be described below.

The electric power tool 401 uses an AC power source such as a commercial power source as a power source, drives a rotary impact mechanism 421 using a motor 403 mounted on the housing 402 as a drive source, and applies a rotational force and an impact force to the anvil 430 that is an output shaft. The rotary impact force is intermittently transmitted to a tip tool (not shown) such as a driver bit held in the mounting hole 430a covered with the sleeve 431 to perform operations such as screw tightening and bolt tightening.

A brushless motor (for example, 4 poles, 6 coils, 2 poles, 3 coils, etc.) 403 is housed in a cylindrical body 402a of a housing 402 having a substantially T-shape when viewed from the side. The rotation shaft 403e of the motor 403 is rotatably held by a bearing 419a (bearing member) and a rear end side bearing 419b (bearing member) provided near the center of the body portion 402a of the housing 402. A rotor 403a having a rotor magnet 403d is integrated with the rotary shaft 403e. A stator core 403b around which a stator coil 403c is wound is fixed via an insulator 415 inside the body portion 402a. In front of the motor 403, a rotor fan 413 that is coaxially mounted with the rotation shaft 403e and rotates in synchronization with the motor 403 is provided. An inverter circuit board 404 for driving the motor 403 is disposed behind the motor 403. The air flow generated by the rotor fan 413 is generated from an air intake hole 417 formed on the rear side of the body portion 402 a of the housing 402 and an air intake port (not shown) formed in a housing portion around the inverter circuit board 404. Is taken into the portion 402a and flows mainly between the rotor 403a and the stator core 403b, and further sucked from the rear of the rotor fan 413 and flows in the radial direction of the rotor fan 413. The housing around the rotor fan 413 The air is discharged to the outside of the housing 402 through an air discharge port (not shown) formed in the portion.

The inverter circuit board 404 is an annular multilayer board having substantially the same diameter as the outer shape of the motor 403. On the inverter circuit board 404, a plurality of switching elements 405 such as FETs (Field-Effect-Transistors) and positions of Hall ICs are arranged. A detection element and other electronic elements are mounted. A plastic spacer 435 is provided between the rotor 403a and the bearing 419b. The spacer 435 has a substantially cylindrical shape and is arranged to keep a constant distance between the bearing 419b and the rotor 403a.

A trigger switch 406 having a trigger 406a is disposed in an upper portion of a handle portion 402b that integrally extends from the body portion 402a of the housing 402 at a substantially right angle, and a switch substrate 407 is provided below the trigger switch 406. A control circuit board 408 having a function of controlling the speed of the motor 403 by the pulling operation of the trigger 406a is accommodated in the lower part in the handle portion 402b. The control circuit board 408 is connected to an AC power source (AC code 409). It is electrically connected to the trigger switch 406. The trigger switch 406 is connected to the inverter circuit board 404 via the signal line 411, and the control circuit board 408 is connected to the inverter circuit board 404 via the signal line 412.

The rotary striking mechanism 421 includes a planetary gear reduction mechanism 422, a spindle 427, and a hammer 424, and the rear end is held by a bearing 420 and the front end is held by a metal bearing 429. When the trigger 406a is pulled and the motor 403 is activated, the motor 403 starts to rotate in the direction set by the forward / reverse switching lever 410, and the rotational force is decelerated by the planetary gear reduction mechanism 422 and transmitted to the spindle 427. The spindle 427 is driven to rotate at a predetermined speed. Here, the spindle 427 and the hammer 424 are connected by a cam mechanism, and this cam mechanism is formed on the V-shaped spindle cam groove 425 formed on the outer peripheral surface of the spindle 427 and the inner peripheral surface of the hammer 424. A hammer cam groove 428 and balls 426 engaged with the

cam grooves

425 and 428 are formed.

The hammer 424 is always urged forward by a spring 423, and when stationary, the ball 426 and the

cam grooves

425 and 428 are engaged with each other so as to be spaced from the end face of the anvil 430. And the convex part which is not illustrated is symmetrically formed in two places on the rotation plane which the hammer 424 and the anvil 430 mutually oppose.

When the spindle 427 is driven to rotate, the rotation is transmitted to the hammer 424 through the cam mechanism, and the convex portion of the hammer 424 engages with the convex portion of the anvil 430 before the hammer 424 is rotated halfway. When the relative reaction occurs between the spindle 427 and the hammer 424 by the engagement reaction force at that time, the hammer 424 compresses the spring 423 along the spindle cam groove 425 of the cam mechanism and moves toward the motor 403 side. And start retreating.

When the protrusion of the hammer 424 moves over the protrusion of the anvil 430 due to the backward movement of the hammer 424 and the engagement between the two is released, the hammer 424 is accumulated in the spring 423 in addition to the rotational force of the spindle 427. While being accelerated rapidly in the rotational direction and forward by the action of the elastic energy and the cam mechanism, it is moved forward by the biasing force of the spring 423, and the convex portion is reengaged with the convex portion of the anvil 430 to rotate integrally. start. At this time, since a strong rotational impact force is applied to the anvil 430, the rotational impact force is transmitted to the screw via a tip tool (not shown) attached to the mounting hole 430a of the anvil 430. Thereafter, the same operation is repeated, and the rotational impact force is intermittently and repeatedly transmitted from the tip tool to the screw. For example, the screw is screwed into a processing member (not shown) such as wood. The light 451 illuminates the tip side of the tip tool and the processing member.

The communication unit 458 is provided in the housing 402. The communication unit 458 performs wireless communication with an external portable device 459 and can change the setting parameters of the power tool 401 from the outside. Wireless communication between the communication unit 458 and the portable device 459 is performed by, for example, an infrared communication method. In addition, the communication unit 458 includes only a wireless communication receiving circuit and can receive only, and the portable device 459 includes only a wireless communication transmitting circuit and can perform only transmission. A normal communication circuit is equipped with a transmission / reception circuit capable of transmission and reception, but the circuit volume is increased as compared with a reception circuit only for reception. Since the electric tool 401 is held in the hand, downsizing is desired. By using only the receiving circuit for the communication circuit of the communication unit 458, the circuit volume can be reduced, and the electric tool can be reduced in size. Can do. In addition, when communication from the portable device 459 to the communication unit 458 is correctly performed, the light 451 is blinked to notify the operator that the communication is correctly performed. The external portable device 459 may be a mobile phone, a portable personal computer, or the like.

FIG. 20 is a plan view of an external portable device 459. The portable device 459 is provided with a display unit 591 such as a liquid crystal screen for displaying the current setting value, and operation buttons 592 (four in the illustrated example) as changeover switches for changing the setting value. The display unit 591 displays the current set value. For example, the set value of the maximum rotation speed, which will be described later, the current set value of the automatic stop time, and the like are displayed. The current set value displayed on the display unit 591 can be changed by operating the operation button 592. Further, the infrared transmission unit 593 is provided in the portable device 459 so as to face the communication unit 458 of the electric tool, thereby transmitting infrared rays from the infrared transmission unit 593 and performing wireless communication with the communication unit 458 of the electric tool.

FIG. 21 is a block diagram showing the configuration of the drive control system of the motor 403 in the electric tool 401 shown in FIG. In this embodiment, a supply voltage from an AC power supply 439 such as a commercial power supply is converted into, for example, a full-wave rectified wave by a rectifier circuit 440 and supplied to an inverter circuit 447 as a motor drive circuit without a smoothing capacitor. The motor 403 is, for example, a three-phase brushless motor. The motor 403 is a so-called inner rotor type, and includes a rotor 403a, a stator, and three position detection elements 442. The rotor 403a includes a rotor magnet 403d including a plurality of sets (two sets in the present embodiment) of N poles and S poles. The stator includes a stator coil 403c and a stator core 403b composed of three-phase stator windings U, V, and W that are star-connected. The three position detection elements 442 are arranged at predetermined intervals in the circumferential direction, for example, at an angle of 60 °, in order to detect the rotational position of the rotor 403a. Based on the rotational position detection signals from these position detection elements 442, the energization direction and time for the stator windings U, V, W are controlled, and the motor 403 rotates. The position detection element 442 is provided on the inverter circuit board 404 at a position facing the rotor 403a. The signal output from the position detection element 442 is applied to the rotor position detection circuit 443.

The electronic elements mounted on the inverter circuit board 404 include six switching elements Q1 to Q6 such as FETs connected in a three-phase bridge format. The control circuit mounted on the control circuit board 408 includes at least a calculation unit 441 and a control signal output circuit 446. The gates of the six switching elements Q1 to Q6 that are bridge-connected in the inverter circuit 447 are connected to the control signal output circuit 446, and the drains or the sources of the six switching elements Q1 to Q6 are star-connected. Connected to the stator windings U, V, W. As a result, the six switching elements Q1 to Q6 perform the switching operation by the switching element drive signals (H1 to H6) input from the control signal output circuit 446, and the voltage (full-wave rectified wave) applied to the inverter circuit 447 ) As three-phase (U-phase, V-phase and W-phase) voltages Vu, Vv and Vw, and power is supplied to the stator windings U, V and W.

Of the switching element driving signals (three-phase signals) for driving the gates of the switching elements, the switching element driving signals for driving the gates of the low-side switching elements Q4, Q5, Q6 are pulse width modulation signals (PWM signals) H4, H5, H6. Then, the power supply amount to the motor 403 is adjusted by the calculation unit 441 by changing the pulse width (duty ratio) of the PWM signal based on the detection signal of the trigger operation amount (stroke) of the trigger switch 406. It is possible to control the start / stop and rotation speed. The relationship between the PWM duty ratios corresponding to the trigger operation amount (stroke) detection signal is a one-to-one relationship, and is represented by one relational expression.

Here, the PWM signal may be supplied to any one of the high side switching elements Q1 to Q3 or the low side switching elements Q4 to Q6 of the inverter circuit 447, and the switching elements Q1 to Q3 or the switching elements Q4 to Q6 are switched at high speed. As a result, the power supplied to each stator winding U, V, W can be controlled. In this embodiment, since the PWM signal is supplied to the low-side switching elements Q4 to Q6, the power supplied to each of the stator windings U, V, and W is adjusted by controlling the pulse width of the PWM signal. Thus, the rotational speed of the motor 403 can be controlled.

The electric tool 401 is provided with a forward / reverse switching lever 410 for switching the rotational direction of the motor 403, and the rotational direction setting circuit 450 switches the rotational direction of the motor each time a change in the forward / reverse switching lever 410 is detected. The control signal is transmitted to the calculation unit 441. The calculation unit 441 is, for example, a microcomputer, which is not shown, but a central processing unit (CPU) for outputting a drive signal based on the processing program and data, a ROM for storing the processing program and control data, It includes a RAM for temporarily storing data, a timer, and the like.

The control signal output circuit 446 generates a drive signal for alternately switching predetermined switching elements Q1 to Q6 based on the output signals of the rotation direction setting circuit 450 and the rotor position detection circuit 443 according to the control of the arithmetic unit 441. To do. As a result, the predetermined windings of the stator windings U, V, and W are alternately energized to rotate the rotor in the set rotation direction. In this case, the drive signal applied to the low-side switching elements Q4 to Q6 is output as a PWM modulation signal based on the output control signal of the applied voltage setting circuit 449. The current value supplied to the motor 403 (current value flowing through the resistor Rs) is measured by the current detection circuit 448, and the voltage value supplied to the motor 403 is measured by the voltage detection circuit 452. The measured current value and voltage value are fed back to the calculation unit 441 so that the drive power supplied to the motor 403 is adjusted to the set drive power. The PWM signal may be applied to the high side switching elements Q1 to Q3.

The three position detection elements 442 are arranged at predetermined angles in the circumferential direction in order to detect the rotational position of the rotor 403a. Therefore, the signal change of the position detection elements changes in time interval depending on the motor rotation speed. Then, the rotation speed detection circuit 1411 inside the calculation unit 441 detects the motor rotation speed by detecting the time interval of the signal change. Similarly, the rotation angle detection circuit 1412 detects the rotation angle of the anvil 430 (tip tool) based on the signal change of the position detection element 442.

The operation time detection circuit 1413 measures the energization time to the motor 403 using a timer inside the calculation unit 441. When the trigger switch 406 is operated, the motor 403 starts to be started, and the operation time detection circuit 1413 starts measuring the operation time simultaneously with the start of the motor start. When the operation time measured by the operation time detection circuit 1413 reaches the automatic stop time, the calculation unit 441 stops the motor 403 even if the trigger switch 406 is operated. The automatic stop time setting circuit 1414 sets an automatic stop time based on an input signal from the operation unit 453 (described later in FIG. 24). The automatic stop time has a plurality of different values, and the automatic stop time is switched every time an input signal is input from the operation unit 453.

FIG. 22 shows the set value of the automatic stop time in the present embodiment. In a state where any one of the setting parameters shown in FIGS. 22A and 22B is selected, the automatic stop time can be set by selecting any of the setting modes A to D by operating the operation unit 453. However, the operation unit 453 on the power tool side cannot switch between FIGS. 22A and 22B (the switching between FIGS. 22A and 22B is performed by the portable device 459 as described later).

The maximum rotation number setting circuit 1415 sets the maximum rotation number of the motor 403 based on the input signal from the operation unit 453. The maximum rotation speed has a plurality of different values, and the maximum rotation speed is switched each time an input signal is input from the operation unit 453.

FIG. 23 shows the set value of the maximum rotational speed in the present embodiment. The maximum number of rotations is a set value of the upper limit of the number of rotations that can be rotated by the motor 403, and the calculation unit 441 controls the motor number of rotations by changing the PWM duty ratio so as to be equal to or less than the set maximum number of rotations. In a state where any one of the setting parameters shown in FIGS. 23A and 23B is selected, the maximum rotation speed can be set by selecting one of the setting modes A to D by operating the operation unit 453. However, the operation unit 453 on the power tool side cannot switch between FIGS. 23A and 23B (the switching between FIGS. 23A and 23B is performed by the portable device 459 as described later).

The communication circuit 1416 receives the infrared transmission signal transmitted from the portable device 459, and reflects the value of the setting parameter in the setting value of the maximum rotation speed and the setting value of the automatic stop time. FIG. 22A shows an example of the set value of the automatic stop time, but it can be changed to the set value shown in FIG. 22B, for example, by changing the setting parameter by communication (from FIG. 22B). Changes to (A) are also possible). Similarly, FIG. 23A shows an example of the setting value of the maximum rotation speed, but it can be changed to, for example, the setting value shown in FIG. 23B by changing the setting parameter by communication (FIG. 23B ) To (A) is also possible). The changed setting parameters are stored in the storage circuit inside the calculation unit 441. Even when the power to the calculation unit is turned off, the set parameters do not disappear. After the power is turned on again, the setting parameters are stored. It is possible to operate with the set parameters.

The operation unit 453 shown in FIG. 24 includes, for example, a maximum rotation number display unit 454, an automatic stop time display unit 455, a maximum rotation number setting button 456 and an automatic stop time setting button 457 as a changeover switch. When the operation of the rotation speed setting button 456 is detected, the calculation unit 441 switches the setting value of the maximum rotation speed, and a numerical value corresponding to the maximum rotation speed is displayed on the maximum rotation speed display section 454. When the operation of the automatic stop time setting button 457 is detected, the calculation unit 441 switches the set value of the automatic stop time, and a numerical value corresponding to the automatic stop time is displayed on the automatic stop time display unit 455. Normally, when the set value is switched, the maximum rotation speed setting button 456 and the automatic stop time setting button 457 are each operated independently. Therefore, when the set value is switched, the maximum rotation speed setting button 456 and the automatic rotation time setting button 457 are automatically operated. The stop time setting buttons 457 are not operated simultaneously. Therefore, when the maximum rotation speed setting button 456 and the automatic stop time setting button 457 are operated at the same time, the mode shifts to a setting parameter switching mode by infrared communication with the portable device 459. For example, when the setting parameter is switched from the portable device 459 by mistake, the setting parameter is not switched unless the mode is shifted to the setting parameter switchable mode. Accordingly, it is possible to prevent the setting parameter from being switched unintentionally by the operator. The operation unit 453 may have a function of setting and displaying a motor target current value and an automatic stop angle as setting parameters. For example, it is possible to adopt a configuration having a changeover switch such as a push button for setting a target current value and an automatic stop angle. Further, the maximum rotation number display unit 454 and the automatic stop time display unit 455 may display the setting modes (A, B, etc.) shown in FIGS.

FIG. 25 shows a graph of the relationship between the tightening time and the tightening torque with respect to the motor rotation speed during the bolt tightening operation. The desired tightening torque differs depending on the work, and in order to perform the bolt tightening operation with the desired tightening torque, it is necessary to keep the tightening time and the motor rotation speed constant for each bolt. In the present embodiment, the values of the automatic stop time and the maximum number of rotations can be switched to constant values corresponding to the work, so that it is always possible to work with a constant and accurate tightening torque.

Fig. 26 shows a graph of the relationship between the tightening time and the screw specifications relative to the optimum motor speed during screw tightening. The smaller the screw (wooden screw or other tapered shape) diameter and the shorter the overall length, the smaller the optimum rotational speed and the shorter the tightening time. The larger the screw diameter and the longer the overall length, the larger the optimum rotational speed and the tightening time. become longer. If the number of rotations at the time of tightening is significantly greater than the optimum number of rotations, it may lead to breakage of the screw head or damage to the processed member due to excessive tightening, so it is necessary to control the motor at the optimum number of rotations when tightening the screws. In addition, the shorter the overall length of the screw, the shorter the tightening time for the operation. Therefore, it is necessary to control the motor from operation to stop as soon as possible, and it is difficult to cope with trigger operation. In the present embodiment, the values of the automatic stop time and the maximum number of rotations can be switched to constant values corresponding to the size of the screw, so that stable screw tightening work can always be performed.

FIG. 27 shows the relationship of the PWM duty ratio corresponding to the trigger operation amount (stroke) detection signal. As the relationship, the relational expressions (A), (B), and (C) are shown. The relational expression (A) is a relational expression when the change of the PWM duty ratio is simply proportional to the trigger operation amount. The relational expression (B) is a relational expression in which the PWM duty is low from the start of the trigger operation to just before reaching the full stroke, and after that, the PWM duty rapidly reaches 100% of the maximum value. At the beginning of the screw tightening operation, the operator usually positions the tip of the screw at the target position by operating the trigger switch by a small amount and rotating the motor by a small amount while pressing the screw against the workpiece. Do. Further, when the screw diameter is small or the screw length is short, the necessary torque is small and the working time is short, so that it is desirable that the motor rotation speed be easily adjusted in a low region. Therefore, it is desirable that the adjustment in the region where the number of rotations operable by the trigger operation is also low is easy, and the case of the relational expression (B) is suitable in that case. The relational expression (C) is a relational expression in which the PWM duty increases immediately after the trigger operation is started, and after that, the PWM duty gradually reaches 100% of the maximum value. During screw tightening, if the screw diameter is large or the screw length is long, the required torque is large and the work time is long, so the motor rotation speed can be easily adjusted in a high region. desired. In addition, when bolting is performed using a wrench for the tip tool, positioning work is not required, so the motor rotation speed may be maximized immediately after the trigger operation starts, and the motor rotation speed can be adjusted in response to the trigger operation. Is also not required. Therefore, when performing screw tightening work and bolt tightening work when the screw diameter is large, the relational expression (C) is suitable. Although the relationship of the PWM duty ratio corresponding to the detection signal of the trigger operation amount (stroke) required according to the work application is different, the relational expressions (A), (B), (C ), And a relational expression suitable for each work can be selected.

The control method of this embodiment performed by the calculation unit 441 will be described using the flowchart of FIG. First, the calculation unit 441 acquires from the applied voltage setting circuit 449 whether the operation of the trigger switch 406 is on (S201). When the operation of the trigger switch 406 is on (S201: YES), the calculation unit 441 starts the operation of the motor 403 (S202). Simultaneously with the start of operation of the motor 403, the operation time detection circuit 1413 starts measuring the operation time (S203). Next, the calculation unit 441 obtains from the applied voltage setting circuit 449 whether the operation of the trigger switch 406 is on (S205). If the operation of the trigger switch 406 is off (S205: NO), the calculation unit 441 The operation of the motor 403 is stopped (S204), and the process returns to S201 again. On the other hand, when the operation of the trigger switch 406 is ON in S205 (S205: YES), the calculation unit 441 detects the rotation speed of the motor 403 by the rotation speed detection circuit 1411 (S206), and the maximum motor speed is set. Motor control is performed while adjusting the PWM duty ratio so that the motor is operated at the rotational speed (S207), the value of the operating time measured by the operating time detection circuit 1413 is confirmed (S208), and the measured operating time is measured. It is confirmed whether or not the automatic stop time has been reached (S209). When the measured operation time has not reached the automatic stop time (S209: NO), the process returns to S205 and the operation of the motor 403 is continued. On the other hand, when it is determined that the operation time measured in S209 has reached the automatic stop time (S209: YES), the calculation unit 441 stops the operation of the motor 403 (S210) and the operation of the trigger switch 406 is continued. Is determined (S211). When the operation of the trigger switch 406 is continued (S211: YES), the motor 403 is kept stopped. When the operation of the trigger switch 406 is released (S211: NO), the process returns to S201.

When the operation of the trigger switch 406 is OFF in the determination of S201 (S201: NO), it is determined whether or not the automatic stop time setting button 457 of the operation unit 453 is operated (S212), and the automatic stop time setting button 457 is operated. If there is (S212: YES), the set value of the automatic stop time is switched (S213). Next, it is determined whether or not the maximum rotation number setting button 456 of the operation unit 453 is operated (S214). When the maximum rotation number setting button 456 is operated (S214: YES), the setting value of the maximum rotation number is set. Switching is performed (S215). The set value can be switched only when the operation of the trigger switch 406 is OFF and the motor 403 is stopped. In the determination in S216, it is determined whether or not it is a communicable mode in which the setting parameter of the electric tool 401 can be changed. When it is a communicable mode in which the setting parameter can be changed (specifically, when the communicable mode is started in S221) (S216: YES), infrared communication is performed from the portable device 459 to perform communication. When the infrared ray is received by the unit 458 (S217: YES), the parameters of the automatic stop time and the maximum rotation speed are changed based on the value of the received communication signal (S218), and the communicable mode is ended (S219). On the other hand, when the mode is not the communication enable mode (S216: NO), it is determined whether the operations of the automatic stop time setting button 457 and the maximum rotation speed setting button 456 are pressed at the same time (S220). If it is determined (S220: YES), the communication mode is entered (S221).

In the flowchart of FIG. 28, the control method in the case where the setting value of the operation time and the maximum rotation speed can be switched has been described. However, separately from this control method, the setting value of the rotation angle and the maximum rotation speed can be switched. The control method will be described. When the trigger switch 406 is operated, the motor 403 starts to be started, but the rotation angle detection circuit 1412 starts detecting the rotation angle of the anvil 430 (tip tool) simultaneously with the start of the motor 403. When the rotation angle (cumulative rotation angle) measured by the rotation angle detection circuit 1412 reaches the automatic stop angle, the calculation unit 441 stops the motor 403 even if the trigger switch 406 is operated. That is, the operation time of S203, S208, and S209 in FIG.

The automatic stop angle has a plurality of different set values, and FIG. 29 shows the set values of the automatic stop angle in the present embodiment. In a state where any one of the setting parameters shown in FIGS. 29A and 29B is selected, one of the setting modes A to D can be selected by the operation of the operation unit 453 to set the automatic stop angle. However, the operation unit 453 on the power tool side cannot switch between FIGS. 29A and 29B, but by performing infrared communication from the portable device 459, the setting parameter is switched by communication, for example, FIG. ) To the set value shown in (B) (change from FIG. 29 (B) to (A) is also possible).

In the flowchart of FIG. 28, the control method when the setting value of the operation time and the maximum number of revolutions can be switched has been described. However, separately from this control method, the setting value of the operation time and the target current value of the motor can be switched. The control method in this case will be described with reference to the flowchart of FIG. In this case, the operation unit 453 has a target current value setting button as a changeover switch. In the case of FIG. 30, S231 to S235 are the same as S201 to S205 of FIG. 28. When the operation of the trigger switch 406 is ON in S235 (S235: YES), the calculation unit 441 is controlled by the current detection circuit 448. The current value of the motor 403 is detected (S236), the motor is controlled while adjusting the PWM duty ratio so that the motor is operated at the set target current value (S237), and measured by the operation time detection circuit 1413. The value of the running time is confirmed (S238). Steps S239 to S243 are the same as steps S209 to S213 in FIG. 28. Next, it is determined whether or not the target current value setting button of the operation unit 453 is operated (S244), and the target current value setting button is operated. In this case (S244: YES), the set value of the target current value is switched (S245). The set value can be switched only when the operation of the trigger switch 406 is OFF and the motor 403 is stopped. S246 to S251 are the same as S216 to S221 in FIG.

According to this embodiment, the following effects can be achieved.

(1) A control circuit (a circuit configuration including a calculation unit 441 and a control signal output circuit 446) on the control circuit board 408 that controls the electric tool 401 with predetermined setting parameters, and an electric motor that changes the setting values of the setting parameters from the outside. A portable device 459 separate from the tool 401 is provided, and when the setting value of the setting parameter is changed from the portable device 459 to the electric tool 401, the electric tool 401 and the portable device 459 perform wireless communication to set the setting parameter. The configuration can change the value. As a result, the operator can set the optimum setting parameter for the work from the outside, and the setting parameter suitable for each work can be set, so that the work efficiency can be greatly improved.

(2) The electric tool 401 can change the setting value of the setting parameter when the operation of the electric tool 401 is stopped, and cannot change the setting value of the setting parameter when the operation of the electric tool 401 is operating. is there. As a result, the setting parameter is changed during the operation of the electric power tool 401, and it is possible to prevent danger when the operation of the electric power tool 401 during the operation changes unintentionally.

(3) An operation unit 453 having switches (setting buttons 456 and 457) operated by a worker is provided in the electric tool 401, and the state of the electric tool 401 can be changed by a switch operation. When the power tool 401 is switched and is in a changeable state (in this example, when the setting

buttons

456 and 457 are pressed simultaneously), the setting parameter can be changed by the portable device 459. When the state is an unchangeable state, the setting parameter cannot be changed by the portable device 459. Thereby, it is possible to prevent the setting parameters from being changed against the operator's intention.

(4) When the power tool 401 is provided with notifying means (light 451 that illuminates the tip of the power tool 401), communication is correctly performed between the power tool 401 and the portable device 459, and the setting parameter is correctly changed. Since the notification means notifies the worker, it is possible to reliably notify the worker that the setting parameter has been set correctly. By using the light 451 also as the notification means, it is not necessary to newly provide another notification means, and the configuration can be simplified.

(5) The communication unit 458 of the electric tool 401 can only receive, and the communication unit of the portable device 459 can only transmit, so that only the circuit of the receiving unit is mounted on the electric tool 401. The circuit does not increase in size, and as a result, the electric tool 401 does not increase in size. In addition, the configuration of the power tool 401 side communication unit 458 and the portable device 459 is simplified.

(6) A saddle housing 402, a motor 403 mounted in the housing 402, a trigger switch 406 as a trigger operation unit, and controls the motor 403 in response to an operation of a trigger 406a included in the trigger switch 406. In the electric tool 401 in which the rotation speed of the motor 403 is adjusted according to the magnitude of the operation amount of 406a, and the operation amount of the trigger 406a and the rotation speed of the motor 403 are defined by a predetermined relational expression, the relational expression is Since the setting parameter can be changed by the portable device 459, the setting value (relational expression) can be changed according to various work applications to improve work efficiency.

(7) The maximum rotational speed is set in the electric tool 401 that has the maximum rotational speed that is the upper limit of the rotational speed that can be operated by the motor 403 and is controlled by the control circuit so that the operation of the motor 403 is less than or equal to the maximum rotational speed. Since the parameter can be changed by the portable device 459, the setting value (maximum rotation speed) can be changed according to various work applications to improve the work efficiency.

(8) Since the electric tool 401 is provided with the operation unit 453 having the maximum rotation number setting button 456 as a changeover switch for setting the maximum rotation number, the maximum rotation number is set by operating the maximum rotation number setting button 456. Since it is possible to switch to a plurality of different values and the set value of the maximum number of rotations of the motor 403 can be changed, the set value can be changed according to various work applications, and work efficiency can be improved. .

(9) It has an automatic stop time for controlling the operation time of the motor 403, and when the operation time after the trigger 406a is operated and the motor 403 is started reaches the automatic stop time, the trigger operation is performed. In the electric tool 401 controlled by the control circuit so as to stop the operation of the motor 403 even in the state of being in the state, the automatic stop time can be changed as a setting parameter by the portable device 459, so that the set value according to various work applications By changing (automatic stop time), work efficiency can be improved.

(10) Since the electric tool 401 is provided with an operation unit 453 having an automatic stop time setting button 457 as a changeover switch for setting the automatic stop time, the automatic stop time is set by operating the automatic stop time setting button 457. Since it is possible to switch to a plurality of different values and the set value of the automatic stop time can be changed, it is possible to improve the work efficiency by changing the set value according to various work applications.

(11) In the case of the electric tool 401 that has a target current value at the time of operation of the saddle motor 403 and the motor 403 is controlled by the control circuit with the target current value, the target current value can be changed by the portable device 459 as a setting parameter. Therefore, it is possible to improve the work efficiency by changing the set value (target current value) according to various work applications.

(12) When the power tool 401 is provided with an operation unit 453 having a target current value setting button as a changeover switch for setting the target current value, the target current value varies depending on the operation of the target current value setting button. Since the set value of the target current value during operation of the motor can be changed, it is possible to improve the work efficiency by changing the set value according to various work applications.

(13) In the case of the electric tool 401 that has an automatic stop angle during operation of the saddle motor 403 and the motor 403 is controlled by the control circuit at the automatic stop angle, the automatic stop angle can be changed by the portable device 459 as a setting parameter. Therefore, it is possible to improve the work efficiency by changing the set value (automatic stop angle) according to various work applications.

(14) When the electric tool 401 is provided with an operation unit 453 having an automatic stop angle setting button as a changeover switch for setting an automatic stop angle, the automatic stop angle differs depending on the operation of the automatic stop angle setting button. Since the setting value of the automatic stop angle during operation of the motor can be changed, the setting value can be changed according to various work applications to improve work efficiency.

The power device, power device system, and power tool management system of the present invention are not limited to the above-described embodiments, and various modifications and improvements can be made within the scope described in the claims.

In the above-described embodiment, the electronic pulse driver 1 and the electric tool 401 are employed as an example of the power equipment, but are not limited thereto. For example, the present invention can be applied to an air tool using compressed air, an engine tool using an internal combustion engine, and the like. Furthermore, the present invention can be applied to work equipment such as a brush cutter and a chain saw driven by electricity or an engine.

In the above-described embodiment, the electronic pulse driver can select one control mode from the four control modes. However, the electronic pulse driver may be configured to be selectable from five or more control modes.

In the above-described embodiment, the torque and the rotation speed can be set between 0 and 100% in consideration of the temperature rise of the device, but a value of 100% or more may be set. As a result, it can be used in a wider range of applications.

In the above-described embodiment, the torque can be set as a ratio with respect to the maximum output of the motor, but it may be set by the torque “N” (Newton) of the tip tool. As a result, the user can fasten the screw with a desired torque value.

In the above-described embodiment, the graphs displayed in the clutch mode graph display area 97 and the pulse mode graph display area 100 are area graphs and scatter diagrams, but are not limited thereto. For example, it may be a line graph, a pie graph, or a bar graph. Further, in the pulse mode, as shown in FIG. 18, a graph that visually represents the hit state of the hammer 42 and the anvil 52 with the vertical axis representing the torque and the horizontal axis representing the number of hits may be used.

In the modification of the first embodiment described above, the tab area 195 is provided with three tabs corresponding to each mode, but the present invention is not limited to this. For example, four tabs may be provided so that each tab corresponds to four control modes stored in the RAM of the electronic pulse driver 1. When the user presses the set value reading button 95C, the four modes stored in the electronic pulse driver 1 can be read at once. At this time, the screen displayed on the window displays a screen on which all parameters of the drill mode, the clutch mode, and the pulse mode can be set.

A communication setting button may be further provided in the window 94 of the above-described embodiment. By pressing the communication setting button, a communication setting window is newly opened, and the communication protocol setting can be changed in the window.

In the above-described embodiment, communication with the external device 9 is possible via the wireless module 385, but communication with a smartphone via wireless communication may be possible. Thereby, the control mode of the electronic pulse driver can be changed more easily.

In the above embodiment, the communication between the communication unit 458 of the power tool 401 and the portable device 459 is exemplified by the infrared communication method, but a short-range wireless communication method using radio waves other than the infrared communication method is adopted. It is also possible to do.

In addition to the light 451 that illuminates the tip of the power tool 401, a notification means that notifies the operator that communication between the power tool 401 and the portable device 459 is correctly performed and the setting parameter has been changed correctly is provided. Also good.

1 .... Electronic pulse driver 2 .... Housing 3 .... Motor 4 .... Hammer part 5 .... Anvil part 6 .... Inverter circuit 7 .... Control part 8 .... Communication cable 9 .... External equipment 21 ... Body part 22・ Handle part 23 ・・ Board housing part 25 ・・ Trigger 26 ・・ Battery 27 ・・ Mode switching panel 42 ・ Hammer 52 ・ Anvil 53 ・・ Tip tool 62 ・ Switching element 63 ・ Hall element 72 ・・Connection unit 74 ··· Connection terminal 83 · Microcomputer 86 · · Communication conversion circuit 87 · · External device connection unit 91 · · Display unit 94 · Window 285 · · Communication conversion circuit 385 · · Wireless module 401 · · Electric tool 402 · · Housing 403 · · Motor 404 · · Inverter circuit board 405 · · Switch 406 ・・ Trigger switch 407 ・・ Switch board 408 ・・ Control circuit board 441 ・・ Calculation unit 1411 ・・ Rotation speed detection circuit 1412 ・・ Rotation angle detection circuit 1413 ・・ Operating time detection circuit 1414 ・・ Automatic stop time Setting circuit 1415 ・・ Maximum rotation speed setting circuit 448 ・・ Current detection circuit 451 ・・ Light 452 ・・ Voltage detection circuit 453 ・・ Operation unit 454 ・・ Maximum rotation speed display unit 455 ・・ Automatic stop time display unit 458 ・・Communication Department 459 ・・ Mobile devices

Claims

A drive unit;
An output unit that is driven by the driving unit and acts dynamically on the outside;
In a power device comprising a control unit that controls the drive unit,
A power device comprising a communication unit that allows a parameter constituting a control mode stored in the control unit to be set by accessing the control unit from outside.
The power device according to claim 1, wherein the control mode is configured by combining a plurality of parameters that can be set from the outside.
A power device system comprising a power device and an external device connectable to the power device,
The power equipment is
A motor,
A drive unit for transmitting the driving force of the motor to a tip tool;
A storage unit for storing a control mode for controlling the driving of the motor;
A control unit for controlling the brushless motor based on the control mode;
A connection portion connectable with the external device,
The external device is
A connected portion connectable to the power device via the connecting portion;
A power unit system comprising: a setting unit capable of setting a parameter of the control mode.
The driving unit includes a hammer driven by the motor, and an anvil that rotates by being struck by the hammer while holding the tip tool, and the parameter is a hitting cycle of the hammer and the anvil. The power equipment system according to claim 3, wherein the power equipment system is provided.
The control mode includes a pulse mode in which the hammer and the anvil are struck by rotating the motor in both directions, and the pulse mode is a correction struck capable of setting parameters different from the normal struck and the normal struck The power equipment system according to claim 4, wherein:
The parameter of the correction hit is at least one of the hitting period of the hammer and the anvil, the number of hits of the hammer and the anvil, and the torque of the hammer when the hammer hits the anvil. The power equipment system according to claim 5, wherein one can be set.
4. The power equipment system according to claim 3, wherein the parameter is a total number of rotations of the tip tool after the motor is operated.
The power device system according to claim 7, wherein the parameter is an initial rotation speed that is a rotation speed of the motor in a period set by the total rotation speed.
The external device includes a display unit that displays the parameter,
The power device system according to claim 3, wherein the display unit includes a graph display unit capable of displaying a graph related to the parameter with a horizontal axis and a vertical axis as a graph.
4. The power equipment system according to claim 3, wherein the parameter is set as a ratio to a maximum capacity of the motor.
The power device system according to any one of claims 3 to 10, wherein the power device further includes a communication signal conversion circuit that converts a communication signal when connected to the external device.
A motor,
A drive unit for transmitting the driving force of the motor to a tip tool;
A control unit for controlling the motor;
A housing having a first housing that houses the motor and the drive unit, a second housing that houses the control unit, and a handle unit that connects the first housing and the second housing;
A power device comprising: a communication unit housed in the second housing and capable of wireless communication with an external device.
The power device according to claim 12, wherein the control unit includes a control circuit board that controls the motor, and the communication unit is provided on the control circuit board.
A motor,
A housing for housing the motor;
A power unit that is housed in the housing and transmits a driving force of the motor to a tip tool,
A power device capable of setting a total rotation speed of the tip tool after the motor is operated.
15. The power device according to claim 14, further comprising a connection portion connectable to an external device, wherein the total number of rotations can be set by the external device by being connected to the external device.
The power device according to claim 15, wherein the external device is capable of setting the initial rotational speed at a ratio to the maximum output of the motor.
The power equipment according to claim 14, wherein the torque of the motor after a period set by the total number of rotations can be set.
The power device according to claim 14, wherein an initial rotation speed that is a rotation speed of the motor in a period set by the total rotation speed can be set.
An electric tool,
A control circuit in the power tool for controlling the power tool with a predetermined setting parameter;
A portable device separate from the electric tool for changing the setting value of the setting parameter from the outside of the electric tool;
When changing the setting value of the setting parameter from the portable device to the electric tool, the electric tool and the portable device communicate wirelessly, and when the operation of the electric tool is stopped, the setting parameter is set. A power tool management system characterized in that a value can be changed and the setting value of the setting parameter cannot be changed when the operation of the power tool is in operation.
A switch is provided in the electric tool, and the state of the electric tool is switched to a changeable state or a non-changeable state by the operation of the switch, and when the state of the electric tool is the changeable state The power tool management system according to claim 19, wherein the setting parameter can be changed, and the setting parameter cannot be changed when the power tool is in the unchangeable state.
The notification means is provided in the electric tool, and the communication means notifies when the communication is correctly performed between the electric tool and the portable device, and the setting parameter is correctly changed. The power tool management system according to 19 or 20.
The power tool management system according to claim 21, wherein the notification means is a light that illuminates a tip of the power tool.
The power tool management according to claim 19, wherein the communication unit of the power tool for performing the wireless communication can only receive, and the communication unit of the portable device can only transmit. system.
The power tool includes a housing, a motor mounted in the housing, and a trigger operation unit. The control circuit controls the motor in response to an operation of the trigger operation unit. The rotation speed of the motor is adjusted according to the magnitude of the operation amount, the operation amount of the trigger operation unit and the rotation speed of the motor are defined by a predetermined relational expression, and the relational expression is the setting parameter, The power tool management system according to claim 19, wherein the relational expression is changed by changing a setting parameter.
The electric tool includes a housing and a motor mounted in the housing, and can set a maximum number of rotations that is an upper limit of a number of rotations that can be operated by the motor. 20. The electric motor according to claim 19, wherein the electric motor is controlled by the control circuit so as to be equal to or lower than a rotational speed, the maximum rotational speed is the setting parameter, and the maximum rotational speed is changed by changing the setting parameter. Tool management system.
26. The electric tool management system according to claim 25, further comprising a changeover switch for setting the maximum rotation speed, wherein the maximum rotation speed can be switched to a plurality of different values by operating the changeover switch.
The electric tool includes a housing, a motor mounted in the housing, and a trigger operation unit, and the control circuit controls the motor in response to the operation of the trigger operation unit, and the operation time of the motor In the state where the trigger operation is performed when the operation time after the trigger operation is performed and the operation of the motor is started reaches the automatic stop time. 20. The control circuit according to claim 19, wherein the control circuit controls the motor to stop operation, the automatic stop time is the setting parameter, and the automatic stop time is changed by changing the setting parameter. The power tool management system described.
28. The electric tool management system according to claim 27, further comprising a changeover switch for setting the automatic stop time, wherein the automatic stop time can be switched to a plurality of different values by operating the changeover switch.
The electric tool includes a housing, a motor mounted in the housing, and a trigger operation unit, and the control circuit controls the motor in response to an operation of the trigger operation unit, and operates the motor. The target current value can be set, and the motor is controlled by the control circuit with the target current value, the target current value is the setting parameter, and the target current value is changed by changing the setting parameter. The power tool management system according to claim 19.
30. The electric tool management system according to claim 29, further comprising a changeover switch for setting the target current value, wherein the target current value can be switched to a plurality of different values by operating the changeover switch.
The electric tool includes a housing, a motor mounted in the housing, and a trigger operation unit, and the control circuit controls the motor in response to an operation of the trigger operation unit, and operates the motor. The automatic stop angle can be set, and the motor is controlled by the control circuit to stop at the automatic stop angle, and the automatic stop angle is the setting parameter, and the automatic stop is performed by changing the setting parameter. The power tool management system according to claim 19, wherein the angle is changed.
32. The electric tool management system according to claim 31, further comprising a changeover switch for setting the automatic stop angle, wherein the automatic stop angle can be switched to a plurality of different values by operating the changeover switch.