WO2006008927A1 - ブラシレスモータ駆動回転工具 - Google Patents
ブラシレスモータ駆動回転工具 Download PDFInfo
- Publication number
- WO2006008927A1 WO2006008927A1 PCT/JP2005/011932 JP2005011932W WO2006008927A1 WO 2006008927 A1 WO2006008927 A1 WO 2006008927A1 JP 2005011932 W JP2005011932 W JP 2005011932W WO 2006008927 A1 WO2006008927 A1 WO 2006008927A1
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- WO
- WIPO (PCT)
- Prior art keywords
- brushless motor
- drive
- circuit
- rotary tool
- hall element
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/20—Arrangements for starting
- H02P6/22—Arrangements for starting in a selected direction of rotation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
- B25B23/147—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for electrically operated wrenches or screwdrivers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/24—Arrangements for stopping
Definitions
- the present invention relates to a brushless motor-driven rotary tool that uses a three-phase DC brushless motor as an electric motor for driving an electric rotary tool such as an electric driver, and in particular, according to the work content of the brushless motor-driven rotary tool.
- the motor drive current supply is restored after a certain period of time has elapsed after detection of this change to the overload current of the motor, and a mechanism is provided in the motor armature circuit.
- the motor armature circuit is configured to be short-circuited when the switching circuit cuts off the supply of the motor driving current, thereby providing electric braking to the motor and instantaneously stopping the rotation of the motor. It can be stopped.
- DC motors are generally employed as drive motors for electric drivers.
- Today as a DC motor, it is proposed to adopt a brushless motor that has the advantages of non-contact, prevention of noise generation, high torque miniaturization, high-speed rotation and long life, and maintenance-free. It is turned into.
- the drive control of the brushless motor for example, a three-phase DC brushless motor, requires a drive circuit that generates a rotating magnetic field.
- a magnetic sensor generally a Hall element is used
- It can be configured by an exciting drive coil (three-phase coil) and a dedicated IC circuit (an inverter circuit that also has a three-phase full-wave bridge configuration force) that controls the energization of these magnetic sensor and drive coil.
- the drive switch system of the electric rotary tool described in Patent Document 2 includes (1) an electric motor and a driver bit that is coupled to the output shaft of the electric motor and performs operations such as screw tightening.
- a rotary switch a drive switch that drives the electric motor to start the work by the rotary tool, a torque detection means that detects a load torque generated in the rotary tool upon completion of the work, and the load torque is preset.
- Push operation type drive switch that performs ON operation by displacing
- Lever operation method that performs ON operation by pressing and displacing the switch lever provided on the gripping part of the electric rotary tool
- the magnetic sensor is connected to a current-carrying circuit of an electric motor, and either one of the operation methods is selected and selected. With the magnetic sensing operation of the operation type magnetic sensor, the energization circuit is turned on to operate the motor The motor is configured to start driving.
- the drive switch system of the electric rotary tool configured as described above, when a brushless motor is used as the electric motor, the drive switch is electrically rotated together with the drive control circuit of the electric motor. All of them can be stored compactly in the tool grip casing, realizing a long service life and maintenance-free operation by making the entire contactless, simplifying handling! /, Etc.
- a gripping part incorporating an electric motor is provided, and a work shaft is connected to an output shaft of the electric motor via a reduction mechanism. And a cam engaging portion that operates to cut off the engagement between the output shaft and the driven shaft when a load torque of a predetermined value or more is applied to the driven shaft.
- Torque detection that provides a latch mechanism and a torque setting mechanism that can adjust the operating point of the clutch mechanism as a torque setting value. Further, when the clutch operation of the clutch mechanism is detected, the electric motor drive stop control is performed at the same time.
- the torque detection mechanism is detected in a state in which the cam engagement at the cam engagement portion of the clutch mechanism is completely released and the clutch operation is completed. Operation and is obtained by setting to perform pre SL drive stop control of the electric motor at the same time.
- the torque detection mechanism is combined with a magnet and a magnetic sensor, and the cam engagement is completely released.
- the torque detection mechanism By configuring it to perform the detection operation, it eliminates the occurrence of sparks and wear of the switch contacts and the adverse effects on the surrounding electronic devices and electronic circuits as in the torque detection mechanism using the conventional mechanism * switch mechanism.
- the overall size of the power tool can be reduced by reducing the size and extending the service life of the components.
- Patent Document 1 Japanese Patent Publication No.57-43389
- Patent Document 2 JP 2002-254346 A
- Patent Document 3 Japanese Patent Laid-Open No. 2002-321166 Disclosure of the invention
- a direct current brushless motor that rotationally drives a rotary tool, a reduction mechanism coupled to the output shaft of the brushless motor, and the reduction mechanism and the rotation.
- a torque setting clutch mechanism provided at a shaft coupling portion with a tool, a lever operation mechanism and a push operation mechanism that can be selectively operated as a drive switch for driving and controlling the drive control circuit of the brushless motor
- a brushless motor driven rotary tool comprising: a control means configured to rotationally drive the brushless motor by lever operation or push operation and to stop driving the brushless motor by detecting a clutch operation of the clutch mechanism.
- Lever operating mechanism or push operation as drive switch of the brushless motor In order to detect a lever operation or push operation by providing a hall element as a magnetic sensor for each mechanism, a hall element is also provided for the clutch mechanism to detect the clutch operation. Based on the operation signal of the former hall element, based on the operation signal of the clutch mechanism by the latter hall element, the brushless motor is driven to rotate based on the operation signal of the drive switch by the former hall element.
- the brushless motor drive rotary tool configured to stop the drive of the brushless motor by stopping the drive control circuit of the brushless motor could be completed.
- the brushless motor-driven rotary tool may be configured such that the drive control circuit of the brushless motor is connected to a commercial power source for obtaining a power supply voltage for driving the brushless motor.
- An inverter circuit that also has a semiconductor bridge configuration power for converting the power supply voltage into a drive voltage of the brushless motor, a drive circuit that appropriately controls ONZOFF of the semiconductor that is a bridge configuration power of the inverter circuit, and an excitation winding of the brushless motor
- a position detection circuit for detecting the position of the rotor and a control signal for switching the current supplied to the excitation winding based on the position detection signal detected by the position detection circuit to the drive circuit.
- a control means for detecting the position of the rotor and a control signal for switching the current supplied to the excitation winding based on the position detection signal detected by the position detection circuit to the drive circuit.
- the drive power of the brushless motor is cut off,
- the brushless motor is controlled by controlling the semiconductor, which is the bridge construction force of the inverter circuit provided in the drive control circuit of the brushless motor, to short-circuit the excitation coil of the brushless motor and brake the rotor. It has been found that the torque control accuracy in the screw tightening operation can be further improved by suddenly braking the rotor.
- lever operation mechanism or push operation mechanism that can be selectively operated as a drive switch for driving and controlling the drive control circuit of the brushless motor
- the lever operation or push operation is interrupted.
- the drive power of the brushless motor is cut off, and the semiconductor that also serves as the bridge configuration force of the inverter circuit provided in the drive control circuit of the brushless motor is controlled to operate the brushless motor.
- a brushless motor-driven rotary tool detects a DC brushless motor that rotationally drives the rotary tool, a speed reduction mechanism coupled to the output shaft of the brushless motor, and a load current of the brushless motor.
- Load current detecting means, a lever operating mechanism and a push operating mechanism that can be selectively operated as a drive switch for driving and controlling the drive control circuit of the brushless motor, and the lever operation or push operation of the drive switch.
- a brushless motor comprising: a drive unit configured to rotate and drive the brushless motor, and to stop driving the brushless motor when a load current detected by the load current detection unit exceeds a preset value.
- the drive rotary tool is configured and the brushless motor is operated as a drive switch.
- the -A hall element as a magnetic sensor is provided for each of the operation mechanism or the push operation mechanism, and it is set to detect a lever operation or a push operation. Based on an operation signal of a drive switch by the hall element, The brushless motor drive control circuit is driven and controlled to rotate. When the load current detected by the load current detection means exceeds a set value, the brushless motor drive control circuit is stopped and controlled to be brushless.
- the motor can also be configured to stop driving.
- the constant torque tightening work such as a screw can always be performed appropriately and efficiently as described above, and the entire apparatus can be compact and compact. ⁇ and improvement of torque control accuracy can be easily achieved, and the force is also increased due to the occurrence of sparks and wear due to the switch contacts in the drive switch and torque detection mechanism using the conventional mechanical switch mechanism. It is possible to eliminate the adverse effects on the electronic devices and electronic circuits, and to realize a small and long life of the component parts.
- the brushless motor drive control circuit is configured to control the ON / OFF control of the semiconductor that constitutes the bridge circuit of the inverter circuit to short-circuit the excitation coil of the brushless motor and brake the rotor.
- the motor rotor can be braked suddenly to further improve the torque control accuracy.
- an object of the present invention is to perform a constant torque tightening operation such as a screw constantly and efficiently. It is possible to easily reduce the overall size of the device and improve the torque control accuracy, and the driving force is similar to that of a torque detection mechanism that uses a conventional mechanical switch mechanism. To provide a brushless motor-driven rotary tool that can reduce the occurrence of sparks and wear caused by various switch contacts and the negative effects on surrounding electronic devices and electronic circuits, etc. is there.
- a brushless motor-driven rotary tool includes a DC brushless motor that rotationally drives a rotary tool, an output shaft of the brushless motor, a rotary tool, A torque setting clutch mechanism provided at the shaft coupling portion, a drive switch that drives and controls the drive control circuit of the brushless motor, and the brushless motor is driven to rotate by operation of the drive switch to detect the clutch operation of the clutch mechanism.
- a brushless motor driven rotary tool comprising a control means configured to stop driving of the brushless motor by:
- a first hall element that detects a lever operation or a push operation is provided for a lever operation mechanism or a push operation mechanism as a drive switch of the brushless motor, and a second operation that detects a clutch operation for the clutch mechanism is provided.
- a hall element is provided, the brushless motor drive control circuit is driven and controlled based on an operation signal of the drive switch by the first hall element, and the brushless motor is driven to rotate, and the second hall element is driven.
- the control means is configured to stop the driving of the brushless motor by stopping the driving control circuit of the brushless motor based on the operation signal of the clutch mechanism.
- the brushless motor-driven rotary tool according to claim 2 of the present invention further includes a forward Z reverse switching operation mechanism for performing forward Z reverse switching operation of the brushless motor, and the forward Z reverse switching operation mechanism.
- a third Hall element for detecting forward / reverse switching operation is provided, and the brushless motor is rotated forward or backward via the control means based on the forward / reverse switching operation signal by the third Hall element. It is characterized by being configured as follows.
- the brushless motor-driven rotary tool according to claim 3 of the present invention is the brushless motor driven tool.
- the motor drive control circuit includes ACZDC conversion means connected to a commercial power supply for obtaining a power supply voltage for driving the brushless motor, and a semiconductor bridge configuration controller for converting the power supply voltage to the brushless motor drive voltage.
- a drive circuit control means for outputting a control signal for switching the current supplied to the excitation winding to the drive circuit in accordance with the position detection signal detected by the above.
- the brushless motor-driven rotary tool according to claim 4 of the present invention is a brushless motor drive control circuit based on an operation signal of the clutch mechanism by the second hall element by the control means.
- the control circuit When controlling the stop of the brushless motor, the drive power of the brushless motor is cut off, the control circuit is operated on the inverter circuit bridge provided in the drive control circuit of the brushless motor, and the excitation winding of the brushless motor is short-circuited. It is characterized in that it is set to brake the rotor.
- the brushless motor-driven rotary tool according to claim 5 of the present invention is configured such that when the lever operation mechanism as a drive switch of the brushless motor or the lever operation or push operation of the push operation mechanism is interrupted, the first operation is stopped.
- the operation of the drive switch by the Hall element 1 is controlled to control the semiconductor that consists of the bridge circuit of the inverter circuit provided in the drive control circuit of the brushless motor to short-circuit the excitation winding of the brushless motor. It is characterized in that it is set to perform stop control of a brushless motor that performs braking.
- a brushless motor-driven rotary tool includes a DC brushless motor that rotationally drives the rotary tool, load current detection means that detects a load current of the brushless motor, and the brushless motor.
- a drive switch that drives and controls the drive control circuit, and the brushless motor is driven to rotate by operating the drive switch, and the brush current is detected when the load current detected by the load current detection means exceeds a preset value.
- a brushless motor driven rotary tool provided with a control means configured to stop driving a less motor
- a control means configured to stop driving a less motor
- a first Hall element that detects a lever operation or a push operation with respect to a lever operation mechanism or a push operation mechanism as a drive switch of the brushless motor, and based on an operation signal of the drive switch by the first Hall element
- the brushless motor drive control circuit is driven to rotate and drive the brushless motor.
- the load current detected by the load current detection means exceeds the set value, the brushless motor drive control circuit is controlled to stop. Then, the control means is configured to stop driving the brushless motor.
- the brushless motor-driven rotary tool according to claim 7 of the present invention further includes a forward Z reverse switching operation mechanism for performing forward Z reverse switching operation of the brushless motor, and the forward Z reverse switching operation mechanism includes On the other hand, a third Hall element for detecting forward / reverse switching operation is provided, and the brushless motor is rotated forward or backward via the control means based on the forward / reverse switching operation signal by the third Hall element. It is characterized by being configured as follows.
- the drive control circuit of the brushless motor is connected to a commercial power supply for obtaining a power supply voltage for driving the brushless motor.
- a conversion circuit ; an inverter circuit configured as a semiconductor bridge for converting the power supply voltage into a drive voltage for the brushless motor; a drive circuit for appropriately ONZOFF-controlling the semiconductor serving as a bridge configuration for the inverter circuit; and a brushless motor
- a position detection circuit for detecting the position of the rotor with respect to the excitation winding of the motor, and a control signal for switching the current supplied to the excitation winding by the position detection signal detected by the position detection circuit to the drive circuit. It is characterized by comprising control means for outputting.
- the brushless motor-driven rotary tool according to claim 9 of the present invention is a brushless motor drive control tool when the load current detected by the load current detection means exceeds a set value by the control means.
- the control circuit for the semiconductor which is the bridge configuration of the inverter circuit provided in the drive control circuit of the brushless motor, controls the short circuit of the excitation wire of the brushless motor.
- the rotor is set to perform braking.
- the brushless motor-driven rotary tool when the lever operation mechanism as the drive switch of the brushless motor or the lever operation or push operation of the push operation mechanism is interrupted, Operation of the drive switch by the first hall element Based on the interruption signal, the control circuit is operated to control the semiconductor that is the bridge configuration of the inverter circuit provided in the drive control circuit of the brushless motor to short-circuit the excitation wire of the brushless motor. It is characterized in that it is set to perform stop control of a brushless motor that brakes the rotor.
- the operation or detection operation by the drive switch and the torque setting clutch mechanism is made non-contact, and constant torque tightening work such as a screw is always properly performed.
- it is possible to easily achieve the compactness of the entire control means and the improvement of torque control accuracy, and the drive force and torque detection mechanism using the conventional mechanical switch mechanism This eliminates the occurrence of sparks and wear due to switch contacts, and the adverse effects on peripheral electronic devices and electronic circuits, thereby realizing a small and long-life component.
- the operation of the drive switch is made non-contact and the detection operation of the set torque is performed by the load current detection means, so Constant torque tightening work can always be performed properly and efficiently, and the compactness of the whole control means and improvement of torque control accuracy can be easily achieved. It is possible to eliminate the occurrence of sparks and wear due to switch contacts, such as the drive switch and torque detection mechanism used, and the adverse effects on peripheral electronic devices and electronic circuits, etc. it can.
- the bra The drive control circuit of the siles motor can be made compact, and it can be easily integrated into the grip casing of the brushless motor drive rotary tool together with each of the hall elements, and the brushless motor drive rotation The entire tool can be manufactured at low cost.
- the completion of screw tightening with a predetermined screw tightening torque is performed in the screw tightening operation.
- the torque control accuracy can be easily improved by controlling the stop of the brushless motor accompanying the sudden braking of the rotor by short-circuiting the excitation coil of the brushless motor.
- FIG. 1 is an explanatory diagram showing a schematic configuration and a control system of a brushless motor drive driver using a driver bit as a rotary tool as an embodiment of the brushless motor drive rotary tool according to the present invention. That is, in FIG. 1, reference numeral 10 indicates a brushless motor drive driver having a brushless motor 12 incorporated therein, and the brushless motor drive driver 10 is connected to the output shaft of the brushless motor 12 through a driver mechanism as appropriate. 14 is a cam that operates so as to cut off the engagement between the output shaft and the driven shaft when a driven torque exceeding a predetermined value is applied to the driven shaft. A torque setting clutch mechanism 16 having an engaging portion is provided. .
- a push operating mechanism 18 having a function as a drive switch is provided at the coupling portion between the output shaft and the driven shaft of the brushless motor 12 by being displaced by pushing the driver bit 14 in the axial direction. Yes.
- a lever operating mechanism 20 having a function as a drive switch is provided on the outer surface of the grip casing of the brushless motor drive driver having the brushless motor 12 incorporated therein, and a forward / reverse switching operation of the brushless motor 12 is performed.
- a forward Z reverse switching operation mechanism 22 is provided.
- each of the lever operation mechanism 20 and the push operation mechanism 18 provided as the drive switch of the brushless motor 12 is magnetically coupled.
- First Hall elements 31a and 31b which are appropriately combined with detection magnets, are provided as sensors.
- the torque setting clutch mechanism 16 is provided with a second Hall element 32 that is appropriately combined with a detection magnet as a magnetic sensor.
- a third Hall element 33 that is appropriately combined with a magnet for detection as a magnetic sensor is provided for the forward / reverse switching operation mechanism 22.
- the first Hall elements 31a and 31b are magnetic sensors provided for the drive switches (32 and 30) disclosed in, for example, Japanese Patent Application Laid-Open No. 2002-254346 (Patent Document 2). Similarly to the sensors (33b, 31b), it can be provided for the lever operating mechanism 20 and the push operating mechanism 18 as drive switches. Further, the second Hall element 32 has a torque similar to that of the magnetic sensor (44) provided for the torque detection mechanism (42) disclosed in, for example, JP-A-2002-321166 (Patent Document 3). It can be provided for the setting clutch mechanism 16.
- a drive control circuit 40 is connected to the brushless motor 12.
- the drive control circuit 40 of the brushless motor 12 includes an AC / DC conversion means 42 connected to a commercial power source P for obtaining a power supply voltage for driving the brushless motor 12, and Semiconductor for converting the power supply voltage to the drive voltage of the brushless motor 12
- Inverter circuit 44 that also has a three-phase full-wave bridge configuration power
- a drive circuit 46 that appropriately controls ONZOFF of the semiconductor that also has the bridge configuration power of the inverter circuit 44
- the position detection circuit 48 for detecting the rotor position with respect to the excitation windings 12a, 12b, 12c of the siles motor 12 and the excitation based on the position detection signal detected by the position detection circuit 48. It comprises control means 50 for outputting a control signal for switching the current supplied to the winding wires 12a, 12b, 12c to the drive circuit 46.
- the first hall element 31a or 31b is operated by operating the lever operation mechanism 20 or the push operation mechanism 18 as a drive switch.
- the lever operation signal S31a or the push operation signal S3 lb which detects the operation state of the drive switch, is output and input to the control unit 50. Therefore, the control means 50 outputs the drive control signal S46a to the drive circuit 46 provided in the drive control circuit 40 of the brushless motor 12 based on the input of the operation signal S31a or S31b of the drive switch.
- the brushless motor 12 is driven and controlled via the inverter circuit 44.
- the position detection circuit 48 provided in the drive control circuit 40 of the brushless motor 12 outputs a position detection signal S48 that detects the rotor position with respect to the excitation windings 12a, 12b, 12c of the brushless motor 12. And is input to the control means 50 and supplied to the excitation windings 12a, 12b and 12c of the brushless motor 12 through the drive circuit 46 and the inverter circuit 44 as the drive control signal S46a. It is configured to obtain a control signal for switching the current to be switched (see Fig. 1 and Fig. 2).
- the brushless motor drive driver 10 can perform the required screw tightening operation.
- the second Hall element 32 changes this operation state.
- the detected clutch operation signal S32 is output and input to the control means 50. Therefore, the control means 50 outputs a stop control signal S46b to the drive circuit 46 provided in the drive control circuit 40 of the brushless motor 12 based on the input of the operation signal S32 of the clutch mechanism 16 as described above.
- the brushless motor 12 is controlled to stop via the inverter circuit 44 (see FIGS. 1 and 2). Thereby, the brushless motor drive driver 10 can complete the required screw tightening operation.
- the third hall element 33 causes the forward or reverse rotation state.
- the forward / reverse switching operation signal S33 that detects the state is output and input to the control means 50. Therefore, the control means 50 outputs the drive control signal S46a to the drive circuit 46 provided in the drive control circuit 40 of the brushless motor 12 based on the forward / reverse rotation switching operation signal S33, and the inverter circuit
- the brushless motor 12 can be configured to perform drive control by forward rotation or reverse rotation via 44 (see FIGS. 1 and 2).
- the control means 50 drives the brushless motor 12 based on the input of the operation signal S32 of the clutch mechanism 16.
- the stop control signal S46b is output to the drive circuit 46 provided in the control circuit 40, the drive power of the brushless motor 12 is cut off and the bridge of the inverter circuit 44 provided in the drive control circuit 40 of the brushless motor 12
- the configured semiconductor can be controlled to short-circuit the excitation wires 12a, 12b, and 12c of the brushless motor 12 so that the rotor can be braked suddenly.
- the forward / reverse switching operation mechanism 22 is operated to determine whether to drive-control the brushless motor 12 by forward rotation or reverse rotation (STEP-1).
- the operating state of the forward / reverse switching operation mechanism 22 is detected by the third hall element 33, and the obtained forward / reverse switching operation signal S 33 is output and input to the control means 50.
- the drive control signal S46a output to the drive circuit 46 provided in the drive control circuit 40 of the brushless motor 12 is set so that the brushless motor 12 is driven by forward rotation or reverse rotation. Is done.
- the lever operating mechanism 20 or the push operating mechanism 18 as a drive switch is operated (STEP-2).
- the first hall element 31a or 31b outputs an operation signal S3la or S31b by lever operation or push operation of the drive switch and inputs it to the control means 50.
- the control means 50 outputs a drive control signal S46a to the drive circuit 46 provided in the drive control circuit 40 of the brushless motor 12, and drives and controls the brushless motor 12 via the inverter circuit 44 (STEP- 3). In this way, the required screw tightening operation by the brushless motor drive driver 10 is performed.
- the torque setting clutch mechanism 16 performs a clutch operation (STEP-4).
- a clutch operation signal S32 is output by the second hole element 32 and input to the control means 50.
- the control means 50 outputs a stop control signal S46b to the drive circuit 46 provided in the drive control circuit 40 of the brushless motor 12, and stops the brushless motor 12 via the inverter circuit 44 (STEP-5). ).
- STEP-2 the required screw tightening operation by the brushless motor drive driver 10 can be completed.
- the lever operation or push operation was interrupted by the operation of the lever operation mechanism 20 or the push operation mechanism 18 as the drive switch (STEP-2).
- the stop control of the brushless motor 12 is performed in the same manner as in STEP-5 (STEP-7).
- the drive power of the brushless motor 12 is cut off, and the semiconductor that also serves as a bridge forming force of the inverter circuit 44 provided in the drive control circuit 40 of the brushless motor 12 is controlled to operate the excitation winding 12 a of the brushless motor 12. 12b and 12c are short-circuited and the rotor is braked suddenly.
- FIG. 4 is an explanatory diagram showing a schematic configuration and a control system of a brushless motor drive driver showing another embodiment of the brushless motor drive rotary tool according to the present invention.
- the same components as those in the first embodiment shown in FIG. 1 are denoted by the same reference numerals, and detailed description thereof is omitted. That is, the brushless motor drive dry of this embodiment
- the bar 1 is the one in which the torque setting clutch mechanism 16 in the above embodiment is omitted, and the drive control circuit 40 of the brushless motor 12 is provided with load current detection means (not shown). Is basically the same as the brushless motor-driven rotary tool 10 of the first embodiment described above.
- the drive switch operation when driving and controlling the brushless motor 12 is exactly the same as in the above-described embodiment (see STEP-1 to STEP 3 in FIG. 3). Therefore, when the screw tightening operation is performed by the brushless motor drive driver 10 ′ and the required screw tightening torque value is reached, in this embodiment, the clutch operation by the torque setting clutch mechanism 16 described above (step 4 in FIG. 3). Instead, the load current detection signal S52 detected by the load current detection means (not shown) is input to the control means 50.
- control means 50 compares the input load current detection signal S52 with a preset set value, and when the set value is exceeded, the drive circuit provided in the drive control circuit 40 of the brushless motor 12 A stop control signal S46b is output to 46, and the brushless motor 12 is set to be stop-controlled via the inverter circuit 44 (see STE P-5 in Fig. 3).
- the brushless motor drive driver 10 can complete the required screw tightening operation.
- the drive power of the brushless motor 12 is cut off and the brushless motor 12 is also stopped.
- the drive control circuit 40 of the motor 12 is controlled to operate the semiconductor that also has the bridging power of the inverter circuit 44, and the excitation windings 12a, 12b, 12c of the brushless motor 12 are short-circuited so that the rotor is braked suddenly. Can be set.
- FIG. 1 is an explanatory diagram showing a schematic configuration and a control system of a brushless motor drive driver as an embodiment of a brushless motor drive rotary tool according to the present invention.
- FIG. 2 is a control system diagram showing an embodiment of the control means of the brushless motor in the brushless motor driven rotary tool according to the present invention.
- FIG. 3 is a flowchart of a control operation program for a brushless motor in a brushless motor driven rotary tool according to the present invention.
- FIG. 4 is an explanatory diagram showing a schematic configuration and a control system of an electric driver as another embodiment of the brushless motor-driven rotary tool according to the present invention.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
- Harvester Elements (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Power Steering Mechanism (AREA)
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/658,235 US20090308628A1 (en) | 2004-07-23 | 2005-06-29 | Rotary tool driven by brushless motor |
EP05765375A EP1775074B1 (en) | 2004-07-23 | 2005-06-29 | Rotary tool driven by brushless motor |
AT05765375T ATE541674T1 (de) | 2004-07-23 | 2005-06-29 | Durch einen bürstenlosen motor angetriebenes drehwerkzeug |
HK07112342.3A HK1103682A1 (en) | 2004-07-23 | 2007-11-12 | Rotary tool driven by brushless motor |
US12/924,934 US8636079B2 (en) | 2004-07-23 | 2010-10-08 | Method of operating a rotary tool |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004-215372 | 2004-07-23 | ||
JP2004215372 | 2004-07-23 | ||
JP2004254480A JP4823499B2 (ja) | 2004-07-23 | 2004-09-01 | ブラシレスモータ駆動回転工具の制御方法 |
JP2004-254480 | 2004-09-01 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/658,235 A-371-Of-International US20090308628A1 (en) | 2004-07-23 | 2005-06-29 | Rotary tool driven by brushless motor |
US12/924,934 Division US8636079B2 (en) | 2004-07-23 | 2010-10-08 | Method of operating a rotary tool |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006008927A1 true WO2006008927A1 (ja) | 2006-01-26 |
Family
ID=35785047
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/011932 WO2006008927A1 (ja) | 2004-07-23 | 2005-06-29 | ブラシレスモータ駆動回転工具 |
Country Status (6)
Country | Link |
---|---|
US (2) | US20090308628A1 (ja) |
EP (1) | EP1775074B1 (ja) |
JP (1) | JP4823499B2 (ja) |
AT (1) | ATE541674T1 (ja) |
HK (1) | HK1103682A1 (ja) |
WO (1) | WO2006008927A1 (ja) |
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2005
- 2005-06-29 AT AT05765375T patent/ATE541674T1/de active
- 2005-06-29 WO PCT/JP2005/011932 patent/WO2006008927A1/ja active Application Filing
- 2005-06-29 EP EP05765375A patent/EP1775074B1/en not_active Not-in-force
- 2005-06-29 US US11/658,235 patent/US20090308628A1/en not_active Abandoned
-
2007
- 2007-11-12 HK HK07112342.3A patent/HK1103682A1/xx not_active IP Right Cessation
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2010
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JP6038396B2 (ja) * | 2014-09-16 | 2016-12-07 | 株式会社 エニイワイヤ | 電動ドライバ管理システム |
Also Published As
Publication number | Publication date |
---|---|
US20090308628A1 (en) | 2009-12-17 |
HK1103682A1 (en) | 2007-12-28 |
JP4823499B2 (ja) | 2011-11-24 |
ATE541674T1 (de) | 2012-02-15 |
EP1775074A4 (en) | 2010-02-03 |
US20110030981A1 (en) | 2011-02-10 |
US8636079B2 (en) | 2014-01-28 |
EP1775074A1 (en) | 2007-04-18 |
EP1775074B1 (en) | 2012-01-18 |
JP2006055980A (ja) | 2006-03-02 |
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