WO2022004216A1 - Compressor and tool system - Google Patents

Compressor and tool system Download PDF

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Publication number
WO2022004216A1
WO2022004216A1 PCT/JP2021/020434 JP2021020434W WO2022004216A1 WO 2022004216 A1 WO2022004216 A1 WO 2022004216A1 JP 2021020434 W JP2021020434 W JP 2021020434W WO 2022004216 A1 WO2022004216 A1 WO 2022004216A1
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WO
WIPO (PCT)
Prior art keywords
control circuit
gas
tool
unit
compressor
Prior art date
Application number
PCT/JP2021/020434
Other languages
French (fr)
Japanese (ja)
Inventor
潤 遠田
貴士 上田
朋也 中島
剛 齋藤
Original Assignee
工機ホールディングス株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 工機ホールディングス株式会社 filed Critical 工機ホールディングス株式会社
Priority to JP2022533748A priority Critical patent/JPWO2022004216A1/ja
Publication of WO2022004216A1 publication Critical patent/WO2022004216A1/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25CHAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
    • B25C1/00Hand-held nailing tools; Nail feeding devices
    • B25C1/04Hand-held nailing tools; Nail feeding devices operated by fluid pressure, e.g. by air pressure
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B41/00Pumping installations or systems specially adapted for elastic fluids
    • F04B41/02Pumping installations or systems specially adapted for elastic fluids having reservoirs

Definitions

  • the present invention relates to a compressor and a tool system that are connected to a tool that operates on compressed gas and that supply the compressed gas to the tool.
  • Patent Document 1 describes a driving machine which is an example of a tool operated by a compressed gas.
  • the driving machine described in Patent Document 1 includes a housing, a cylinder provided in the housing, a pressure accumulator container attached to the opening of the cylinder, a striking portion provided in the cylinder, and an electric motor provided in the housing.
  • Rotating disk that transmits the rotational force of the electric motor to the striking part, accumulator chamber provided in the cylinder and in the accumulator container, filling valve attached to the accumulator container, nose part attached to the housing, nose part It has a magazine that houses the fasteners to be supplied to the cylinder.
  • a joint portion is provided at the tip of the filling valve, and when the accumulator chamber is filled with compressed air, the compressor is connected to the joint portion.
  • Tools that utilize compressed gas will need to be filled with compressed gas on a regular basis. Since filling the tool with the compressed gas requires specialized knowledge, the user requests maintenance of the tool from an external organization such as a manufacturer or a repair company. The inventor of the present application has recognized the problem that the user cannot use the tool while the tool is sent to an external organization.
  • An object of the present invention is to provide a compressor and a tool system capable of shortening the period during which a user cannot use a tool.
  • the compressor of one embodiment can be connected to a gas compression unit that compresses a gas and a pressure accumulator unit of a tool operated by the compressed gas, and supplies the compressed gas compressed by the gas compression unit to the accumulator unit.
  • a compressor having a possible gas supply unit and a control circuit for controlling the gas compression unit, wherein the control circuit can set a target pressure of the compressed gas in the accumulator unit, and the control circuit can set the target pressure of the compressed gas in the accumulator unit.
  • the gas compression unit is controlled based on the target pressure.
  • the compressor of another embodiment can be connected to a gas compression unit that compresses the gas and a pressure accumulator of a tool that uses the compressed gas, and the compressed gas compressed by the gas compression unit is used as the accumulator. It is a compressor having a gas supply unit that can be supplied and a control circuit that controls the gas compression unit, and the control circuit can control the drive unit of the tool.
  • the tool system of another embodiment includes the compressor and the tool operated by the compressed gas supplied from the compressor.
  • the compressor of one embodiment can reduce the period during which the user cannot use the tool.
  • FIG. 3 is an enlarged cross-sectional view showing the compressor shown in FIG. 1. It is sectional drawing which shows the main part of FIG. It is a block diagram which shows the control system of a compressor and a nail gun. It is a flowchart which includes the control example performed by the control circuit of a compressor.
  • the tool system 10 shown in FIG. 1 includes a nail gun 11, a compressor 12, and a battery pack 13.
  • the nail gun 11, the compressor 12, and the battery pack 13 are separately provided devices.
  • the compressor 12 can be attached to and detached from the nail gun 11.
  • the battery pack 13 can be attached to and removed from the compressor 12.
  • the battery pack 13 can be attached to the nail gun 11.
  • the nail gun 11 includes a housing 14, a cylinder 15, a striking section 16, a pressure accumulator chamber 17, an air pipe 18, a filling valve 19, an electric motor 20, a speed reducer 21, a conversion section 22, an injection section 23, a magazine 24, and a control circuit 25.
  • the housing 14 has a cylinder case 27, a motor case 28, a handle 29, and a mounting portion 30.
  • the handle 29 and the motor case 28 are connected to the cylinder case 27, and the mounting portion 30 is connected to the handle 29 and the motor case 28.
  • the cylinder 15 is provided in the cylinder case 27.
  • the electric motor 20 is provided in the motor case 28.
  • the electric motor 20 is, for example, a brushless motor, and the electric motor 20 has a stator 20A and a rotor 20B.
  • the rotor 20B is attached to the motor shaft 20C.
  • the speed reducer 21 is provided in the motor case 28 and the cylinder case 27.
  • the speed reducer 21 has an input element, an output element, and a planetary gear mechanism.
  • the motor shaft 20C is connected to the input element of the speed reducer 21.
  • the speed reducer 21 reduces the rotation speed of the output element with respect to the rotation speed of the input element.
  • the inverter circuit 103 is provided in the motor case 28.
  • the inverter circuit 103 has a plurality of switching elements, and connects and disconnects a circuit that supplies power to the stator 20A.
  • the conversion unit 22 is provided in the cylinder case 27.
  • the conversion unit 22 converts the rotational force of the output element of the speed reducer 21 into the operating force of the striking unit 16.
  • the conversion unit 22 has, for example, a wheel 31 and a pinion pin 32.
  • the wheel 31 is connected to the output element of the reducer 21.
  • the wheel 31 can rotate about the center line A1, and a plurality of pinion pins 32 are provided at intervals in the rotation direction of the wheel 31.
  • the striking portion 16 has a piston 33 and a driver blade 34.
  • the piston 33 is arranged in the cylinder 15, and the striking portion 16 can operate in the direction along the center line A2 of the cylinder 15.
  • a seal member 101 is attached to the outer peripheral surface of the piston 33.
  • the sealing member 101 is annular and is made of synthetic rubber.
  • the pressure accumulator chamber 17 is airtightly sealed by the sealing member 101 coming into contact with the inner peripheral surface of the cylinder 15.
  • the driver blade 34 has a rack 35.
  • the rack 35 has a plurality of protrusions provided at intervals in the direction along the center line A2.
  • the pinion pin 32 engages and disengages the rack 35 as the wheel 31 is rotated.
  • the rotation control mechanism 57 is provided in the housing 14.
  • the rotation control mechanism 57 allows the rotational force of the electric motor 20 to be transmitted to the wheel 31 to rotate the wheel 31, and prevents the wheel 31 from rotating due to the urging force received from the striking portion 16.
  • the injection unit 23 is attached to the cylinder case 27, and the injection unit 23 has an injection path 23A.
  • the push lever 46 is attached to the injection portion 23. The user can bring the push lever 46 into contact with and separate from the mating material W1.
  • the bumper 36 is provided in the housing 14.
  • the bumper 36 is made of synthetic rubber, and a part of the bumper 36 is arranged in the cylinder 15.
  • the accumulator container 37 is provided in the housing 14.
  • the accumulator container 37 is attached to the cylinder 15.
  • the accumulator chamber 17 is provided in the cylinder 15 and in the accumulator container 37.
  • the accumulator chamber 17 is filled with compressed gas, for example, compressed air.
  • the striking portion 16 receives the air pressure of the accumulator chamber 17 and is urged in the first direction B1 in which the piston 33 approaches the bumper 36. In addition to being operable in the first direction B1, the striking portion 16 is operable in the second direction B2 where the piston 33 is separated from the bumper 36.
  • the first direction B1 and the second direction B2 are opposite to each other.
  • the magazine 24 accommodates the nail 47.
  • a plurality of nails 47 are arranged in a row, and the nails 47 are connected to each other by a connecting tool.
  • a feeder 48 is provided in the magazine 24, and the feeder 48 supplies the nail 47 to the injection path 23A.
  • a trigger 49 is provided on the handle 29, and the user can grip the handle 29 by hand to add an operating force to the trigger 49 and release the operating force.
  • the air pipe 18 is provided in the cylinder case 27, the handle 29, and the mounting portion 30.
  • the air pipe 18 constitutes a path for sending compressed air to the accumulator chamber 17.
  • the air pipe 18 is made of metal as an example, and the air pipe 18 has a passage 104. The first end of the air pipe 18 is attached to the accumulator container 37, and the passage 104 is connected to the accumulator chamber 17.
  • the holder 38 is attached to the mounting portion 30.
  • the holder 38 has a tubular shape, and the holder 38 has a support hole 38A.
  • the center line A3 of the support hole 38A and the center line A2 are parallel to each other.
  • the second end of the air pipe 18 is connected to the holder 38.
  • the filling valve 19 is provided in the support hole 38A.
  • the filling valve 19 has a plunger 19A.
  • the plunger 19A is operated by an external force.
  • the display 39 is provided in the housing 14, for example, the mounting portion 30.
  • the display 39 is, for example, a liquid crystal panel and has a touch switch and the like.
  • the nail gun 11 has a trigger switch 40, a push lever switch 41, a striking portion detection sensor 42, a nail remaining amount detection sensor 43, a current value detection circuit 44, and a phase detection sensor 45 shown in FIG. 7.
  • the trigger switch 40 detects whether or not an operating force is applied to the trigger 49 and outputs a signal.
  • the push lever switch 41 detects whether or not the push lever 46 is pressed against the mating material W1 and outputs a signal.
  • the striking portion detection sensor 42 detects the position of the striking portion 16 in the operating direction of the striking portion 16 and outputs a signal.
  • the nail remaining amount detection sensor 43 detects the remaining amount of nails 47 housed in the magazine 24, that is, the number of nails 47, and outputs a signal.
  • the current value detection circuit 44 detects the current value supplied to the electric motor 20 and outputs a signal.
  • the phase detection sensor 45 detects the position of the motor shaft 20C in the rotational direction and outputs a signal.
  • the control circuit 25 is provided in the housing 14, for example, in the mounting portion 30 and in the motor case 28.
  • the control circuit 25 is a microcomputer having an input port, an output port, a central processing unit, and a storage device.
  • the control circuit 25 processes the signal of the trigger switch 40, the signal of the push lever switch 41, the signal of the striking part detection sensor 42, the signal of the nail remaining amount detection sensor 43, and the signal of the current value detection circuit 44.
  • the control circuit 25 estimates the rotation speed of the motor shaft 20C per unit time, that is, the rotation speed by processing the signal of the phase detection sensor 45.
  • the mounting portion 30 has a guide portion 50 and a terminal 51.
  • the guide portion 50 is extended linearly with respect to the mounting portion 30.
  • the guide portion 50 is extended in a direction along the center line A3.
  • the guide portion 50 has, for example, at least one of a rail, a groove, and a protrusion.
  • the terminal 51 includes a power terminal and a communication terminal.
  • the power terminal has a positive electrode terminal and a negative electrode terminal, and as shown in FIG. 7, power lines 51A and 51B are connected to the power terminal.
  • the communication terminal transmits signals, and the communication line 51C is connected to the communication terminal.
  • the compressor 12 can be connected to and detached from the mounting portion 30. Further, the battery pack 13 can be attached to and detached from the mounting portion 30.
  • the battery pack 13 has a storage case 52, a battery cell 53, a guide portion 54, and a terminal 55.
  • a plurality of battery cells 53 are housed inside the housing case 52.
  • the battery cell 53 is a secondary battery capable of charging and discharging, and any of a lithium ion battery, a nickel hydrogen battery, a lithium ion polymer battery, and a nickel cadmium battery can be used as the battery cell 53.
  • the storage case 52 has a mounting portion 56, and the mounting portion 56 is provided with a guide portion 54 and a terminal 55.
  • the guide portion 54 is linearly extended, and the guide portion 54 has at least one of a groove, a rail, and a protrusion.
  • the terminal 55 includes a power terminal and a communication terminal. The power terminal is electrically connected to the battery cell 53.
  • FIG. 3 an example in which the nail gun 11 is used with the mounting portion 56 of the battery pack 13 attached to the mounting portion 30 of the nail gun 11 will be described.
  • the mounting portion 56 is attached to the mounting portion 30, although not shown, when the guide portion 54 and the guide portion 50 are slid, the guide portion 54 and the guide portion 50 are engaged with each other.
  • the mounting portion 56 is attached to the mounting portion 30, the terminal 55 and the terminal 51 are electrically connected.
  • the compressor 12 is not attached to the mounting portion 30. Therefore, no external force is applied to the plunger 19A of the filling valve 19, and the filling valve 19 shuts off the passage 104 and the external C1 of the housing 14.
  • the control circuit 25 When the control circuit 25 detects at least one of the fact that the operating force for the trigger 49 is released or the push lever 46 is separated from the mating material W1, the control circuit 25 controls the inverter circuit 103 to control the electric motor. The power supply to 20 is stopped. Therefore, the electric motor 20 is stopped. The striking portion 16 is constantly urged in the first direction B1 by receiving the air pressure of the accumulator chamber 17. The rack 35 and the pinion pin 32 are engaged with each other, and the urging force received by the striking portion 16 is transmitted to the wheel 31. The rotation regulation mechanism 57 prevents the wheel 31 from rotating. Therefore, the striking portion 16 is stopped at the standby position.
  • the standby position of the striking portion 16 is a state in which the striking portion 16 is between the bottom dead center and the top dead center, and the piston 33 is separated from the bumper 36.
  • the top dead center of the striking portion 16 is the position where the piston 33 is farthest from the bumper 36, as shown by the alternate long and short dash line in FIG.
  • the bottom dead center of the striking portion 16 is the position where the piston 33 comes into contact with the bumper 36, as shown by the solid line in FIG.
  • control circuit 25 When the control circuit 25 detects that an operating force is applied to the trigger 49 and the push lever 46 is pressed against the mating material W1, it controls the inverter circuit 103 to transfer the electric power of the battery pack 13 to the electric motor. Supply to 20.
  • the rotational force of the motor shaft 20C of the electric motor 20 is transmitted to the wheel 31 via the speed reducer 21. Then, the rotational force of the wheel 31 is transmitted to the striking portion 16, and the striking portion 16 operates in the second direction B2, that is, rises.
  • the striking portion 16 rises, the pressure in the accumulator chamber 17 rises.
  • all pinion pins 32 are released from the rack 35.
  • the striking portion 16 operates in the first direction B1 by the air pressure of the accumulator chamber 17, that is, descends.
  • the driver blade 34 strikes the nail 47 supplied to the injection path 23A, and the nail 47 is driven into the mating material W1.
  • the piston 33 collides with the bumper 36. That is, the striking portion 16 reaches the bottom dead center.
  • the bumper 36 is elastically deformed by receiving a load in the direction along the center line A2, and the bumper 36 absorbs a part of the kinetic energy of the striking portion 16.
  • the control circuit 25 rotates the electric motor 20 even after the push lever 46 is separated from the mating material W1 by the reaction of the nail 47 being driven into the mating material W1. Therefore, the pinion pin 32 of the wheel 31 is engaged with the rack 35, and the striking portion 16 is raised from the bottom dead center.
  • the control circuit 25 processes the signal of the striking portion detection sensor 42 to detect the position of the striking portion 16 in the direction along the center line A2, and determines whether or not the striking portion 16 has reached the standby position. do.
  • the control circuit 25 stops the electric motor 20 when the striking portion 16 reaches the standby position.
  • the control circuit 25 can detect and store the number of times the striking unit 16 operates from the top dead center to the bottom dead center by processing the signal of the phase detection sensor 45 and the signal of the striking unit detection sensor 42.
  • the control circuit 25 can store the usage history of the nail gun 11.
  • the usage history includes the number of times the striking unit 16 operates from the top dead center to the bottom dead center after the previous supply of compressed air to the accumulator chamber 17, the number of nails 47 housed in the magazine 24, and the nail 47 is the injection path. Whether or not it is clogged with 23A.
  • the control circuit 25 can perform blank hit prevention control.
  • the blank hit prevention control when the number of nails 47 housed in the magazine 24 is less than a predetermined number, an operating force is applied to the trigger 49, and even if the push lever 46 is pressed against the mating material W1. It is a control for holding the stop of the electric motor 20.
  • the control circuit 25 can detect whether or not the nail 47 is clogged in the injection path 23A by processing the signal of the impact portion detection sensor 42 and the signal of the current value detection circuit 44.
  • the current value when the nail 47 is clogged in the injection path 23A is higher than the current value when the nail 47 is not clogged in the injection path 23A.
  • the striking portion 16 operates from the top dead center to the bottom dead center and then the striking portion 16 is stopped between the top dead center and the bottom dead center, the nail 47 is inserted in the injection path 23A. Judge that it is clogged.
  • the target striking force of the striking portion 16 differs depending on the model of the nailing machine 11.
  • the model of the nailing machine 11 includes the hardness and material of the mating material W1 into which the nail 47 is driven, the length of the nail 47, the thickness of the nail 47, and the like.
  • the actual striking force applied to the nail 47 by the striking portion 16 is determined according to the maximum pressure of the accumulator chamber 17.
  • the maximum pressure of the accumulator chamber 17 is the air pressure of the accumulator chamber 17 when the striking portion 16 is located at the top dead center.
  • the maximum pressure of the accumulator chamber 17 depends on the initial pressure of the accumulator chamber 17, the pressure receiving area of the piston 33 in the plane perpendicular to the center line A1, and the stroke amount at which the striking portion 16 operates from the bottom dead center to the top dead center. It is decided.
  • the initial pressure of the accumulator chamber 17 is the air pressure of the accumulator chamber 17 when the striking portion 16 is located at the bottom dead center.
  • the pressure receiving area of the piston 33 is fixed, and the stroke amount at which the striking portion 16 operates from the bottom dead center to the top dead center is fixed. Therefore, the nail gun 11 can adjust the actual striking force applied to the nail 47 by the striking portion 16 by adjusting the initial pressure of the accumulator chamber 17.
  • the initial pressure of the accumulator chamber 17 can be adjusted by attaching the mounting portion 30 of the nail gun 11 to the compressor 12.
  • the compressor 12 includes a housing 58, an electric motor 59, a speed reducer 60, an inverter circuit 61, a compression unit 62, a control circuit 63, an exhaust pipe 85, a connector 65, and a first mounting unit 66.
  • the second mounting unit 67, the display 68, the pressure detection sensor 69, the attachment / detachment detection sensor 70, the phase detection sensor 72, the model detection sensor 71, the current value detection circuit 73, and the connection state detection sensor 100 are provided.
  • the gas compression unit 102 is composed of an electric motor 59, a speed reducer 60, an inverter circuit 61, and a compression unit 62.
  • legs 106 are provided at the four corners of the bottom surface of the housing 58.
  • the user puts the compressor 12 on the ground by bringing all the legs 106 into contact with the ground 107, and moves the battery pack 13 and the nail gun 11 with respect to the compressor 12 as shown in FIG.
  • the tool system 10 can be assembled as shown in FIG. 1 by attaching the battery pack 13 to the compressor 12 and attaching the nail gun 11 to the compressor 12.
  • the assembled tool system 10 can stand on its own with the legs 106 of the compressor 12 in contact with the ground 107 and the battery pack 13 and the nail gun 11 mounted on the compressor 12.
  • the compression unit 62 includes a cylinder 74, a crankpin 75, a piston 76, and a connecting rod 77.
  • the electric motor 59 is, for example, a brushless motor, and the electric motor 59 has a rotor 78, a stator 79, and a motor shaft 80.
  • the speed reducer 60 has a drive gear 81 attached to the motor shaft 80 and a driven gear 82 meshed with the drive gear 81.
  • the rotational force of the motor shaft 80 of the electric motor 59 is amplified by the speed reducer 60.
  • the crankpin 75 is provided at a position eccentric from the center of rotation of the driven gear 82, and the crankpin 75 is connected to the connecting rod 77.
  • the connecting rod 77 is connected to the piston 76.
  • the intake valve 83 is provided in the cylinder 74, and the compression chamber 84 is provided in the cylinder 74.
  • the exhaust pipe 85 is attached to the cylinder 74, and the exhaust pipe 85 has a passage 86.
  • the passage 86 is connected to the compression chamber 84.
  • the intake valve 83 allows the air outside the cylinder 74 to be sucked into the compression chamber 84, and prevents the air in the compression chamber 84 from being discharged to the outside of the cylinder 74.
  • An exhaust valve 87 is provided between the compression chamber 84 and the passage 86. The exhaust valve 87 allows air to be discharged from the compression chamber 84 to the passage 86 and prevents air from returning from the passage 86 to the compression chamber 84.
  • the piston 76 is operable in the cylinder 74.
  • the piston 76 is reciprocated by the rotational force of the driven gear 82.
  • the piston 76 When the piston 76 is operated, the air outside the cylinder 74 is sucked into the compression chamber 84 via the intake valve 83, and the air compressed in the compression chamber 84 passes through the exhaust valve 87. It is discharged to the passage 86.
  • the passage 88, the exhaust valve 89, and the insertion portion 90 are provided in the connector 65.
  • the insertion portion 90 is a portion of the connector 65 that protrudes or extends in a direction along the center line A4 of the passage 88, and the passage 88 is provided from the connector 65 to the insertion portion 90.
  • the insertion portion 90 has a contact 90A.
  • the passage 88 is connected to the passage 86 with the fitting 65 fixed to the housing 58.
  • the exhaust valve 89 has a body 91, an exhaust passage 92, a shaft portion 93, a spring 94, and a seal member 95.
  • the body 91 is fixed to the connector 65, and the exhaust passage 92 is provided in the body 91.
  • the spring 94 is provided in the exhaust passage 92.
  • the shaft portion 93 is provided from the exhaust passage 92 to the external C1.
  • the shaft portion 93 is operable with respect to the body 91.
  • the shaft portion 93 is urged by a spring 94.
  • the seal member 95 is provided in the exhaust passage 92 and is attached to the shaft portion 93.
  • the exhaust valve 89 is operated by the user as an example.
  • the seal member 95 is separated from the body 91, and the passage 88 and the external C1 are connected by the exhaust passage 92.
  • the seal member 95 is pressed against the body 91 by the spring 94, and the passage 88 and the external C1 are cut off.
  • the first mounting portion 66 is provided in the housing 58, and the first mounting portion 66 has a guide portion 96 and a terminal 97.
  • the guide portion 96 extends linearly with respect to the first mounting portion 66.
  • the guide portion 96 is extended in the same direction as the insertion portion 90 is extended from the connector 65.
  • the guide portion 96 has, for example, at least one of a rail, a groove, and a protrusion.
  • the terminal 97 includes a power terminal and a communication terminal.
  • the power terminal has a positive electrode terminal and a negative electrode terminal, and as shown in FIG. 7, power lines 97A and 97B are connected to the power terminal.
  • the communication terminal transmits signals, and the communication line 97C is connected to the communication terminal.
  • the first mounting portion 66 can be connected to and disconnected from the mounting portion 30.
  • the second mounting portion 67 is provided in the housing 58 at a position different from the location where the first mounting portion 66 is provided.
  • the second mounting portion 67 has a guide portion 98 and a terminal 99.
  • the guide portion 98 extends linearly with respect to the second mounting portion 67.
  • the guide portion 98 is extended in a direction different from the direction in which the guide portion 96 is extended.
  • the guide portion 98 has, for example, at least one of a rail, a groove, and a protrusion.
  • Terminal 99 includes a power terminal and a communication terminal.
  • the power terminal of the terminal 99 has a positive electrode terminal and a negative electrode terminal, and the power terminal of the terminal 99 is connected to the power lines 97A and 97B.
  • the communication terminal transmits a signal to and from the battery pack 13, and the communication terminal of the terminal 99 is connected to the communication line 97C.
  • the mounting portion 56 of the battery pack 13 can be connected to and disconnected from the second mounting portion 67.
  • the display 68 has a power on switch, a power off switch, and a start switch. These switches are operated by the user. When the on switch is operated, the electric power of the battery pack 13 is supplied to the control circuit 63 to activate the control circuit 63. When the off switch is operated, the power supply to the control circuit 63 is stopped and the control circuit 63 is shut down. When the user operates the start switch, the control circuit 63 drives the compressor 12, and the compressed air generated by the compressor 12 is supplied to the accumulator chamber 17 of the nail gun 11.
  • the display 68 displays the actual pressure of the accumulator chamber 17, displays the power on and off, displays the maintenance, and the like.
  • the maintenance display includes information such as the replacement time of the seal member 101, the number of nails 47 in the magazine 24, the fact that the nails 47 are clogged in the injection path 23A, the connection failure between the connector 65 and the holder 38, and the like.
  • the attachment / detachment detection sensor 70 detects whether or not the first mounting portion 66 of the compressor 12 is mounted on the mounting portion 30 of the nail gun 11 and outputs a signal.
  • the connection state detection sensor 100 is provided on, for example, the connector 65.
  • the connection state detection sensor 100 detects whether or not the connection state between the connector 65 and the holder 38 is normal, and outputs a signal.
  • the current value detection circuit 73 is provided in the housing 58.
  • the current value detection circuit 73 detects the current value supplied from the battery pack 13 to the electric motor 59 and outputs a signal.
  • the phase detection sensor 72 detects the position of the motor shaft 80 in the rotational direction and outputs a signal.
  • the pressure detection sensor 69 is provided in the exhaust pipe 85, for example, as shown in FIG.
  • the pressure detection sensor 69 detects the air pressure in the passage 86 and outputs a signal.
  • As the pressure detection sensor 69 for example, a strain gauge can be used.
  • the model detection sensor 71 is provided, for example, in the first mounting portion 66.
  • the model detection sensor 71 detects the model of the nail gun 11 and outputs a signal.
  • the control circuit 63 is provided in the housing 58 as shown in FIG.
  • the control circuit 63 is a microcomputer having an input port, an output port, a central processing unit, and a storage unit 63A.
  • the storage unit 63A has a ROM (Read Only Memory) and a RAM (Random Access Memory).
  • the control circuit 63 processes signals from various sensors and processes information input by operating the display 68.
  • the control circuit 63 can identify the model of the nail gun 11.
  • Examples of the control circuit 63 for determining the model of the nail gun 11 include the following, in addition to the model information input by the user by operating the display 68.
  • An identification unit is provided in the mounting unit 30 of the nail gun 11, and the model detection sensor 71 outputs a signal corresponding to the identification unit.
  • Examples of the identification unit include a label having a barcode corresponding to the model, a shape of the mounting portion 30 corresponding to the model, a shape of the holder 38 corresponding to the model, and the like.
  • the control circuit 25 of the nail gun 11 may store the model in advance. Communication is performed between the control circuit 63 of the compressor 12 and the control circuit 25 of the nail gun 11, and the control circuit 63 of the compressor 12 determines the model of the nail gun 11.
  • the first mounting portion 66 of the compressor 12 and the mounting portion 30 of the nail gun 11 are moved in the direction along the center line A3 to engage the guide portion 96 and the guide portion 50, the first The mounting portion 66 is mounted on the mounting portion 30. That is, the user can connect the first mounting portion 66 of the compressor 12 and the mounting portion 30 of the nail gun 11 with one operation.
  • the terminal 97 and the terminal 51 are electrically connected.
  • the power terminal and the communication terminal of the terminal 97 are electrically connected to the power terminal and the communication terminal of the terminal 51, respectively.
  • the power line 97A and the power line 51A are connected, the power line 97B and the power line 51B are connected, and the communication line 97C and the communication line 51C are connected. That is, the first mounting unit 66 enables power supply and signal transmission / reception between the control circuit 63 and the control circuit 25. Further, the first mounting unit 66 makes it possible to supply the electric power of the battery pack 13 to the nail gun 11.
  • the insertion portion 90 enters the support hole 38A, and the insertion portion 90 is connected to the holder 38 as shown in FIGS. 5 and 6.
  • the contact 90A applies an external force to the plunger 19A, and the filling valve 19 connects the passage 104 and the passage 88.
  • the first mounting portion 66 and the mounting portion 30 are moved in the direction along the center line A3 to release the guide portion 96 and the guide portion 50, the first mounting portion 66 is mounted. It can be removed from 30. That is, the user can remove the compressor 12 from the nail gun 11 with one operation.
  • the terminal 97 and the terminal 51 are electrically cut off.
  • the insertion portion 90 is removed from the holder 38.
  • the external force on the plunger 19A is released, and the filling valve 19 cuts off the passage 104 and the passage 88, and also cuts off the passage 104 and the external C1.
  • the mounting portion 56 of the battery pack 13 and the second mounting portion 67 of the compressor 12 when the guide portion 98 and the guide portion 54 are engaged with each other, the mounting portion 56 becomes the second mounting portion. Attached to 67.
  • the terminal 55 and the terminal 99 are electrically connected. That is, the power terminal of the terminal 55 and the power terminal of the terminal 99 are electrically connected, and the communication terminal of the terminal 55 and the communication terminal of the terminal 99 are electrically connected.
  • the mounting portion 56 is removed from the second mounting portion 67.
  • the terminals 55 and 99 are electrically cut off.
  • the guide portion 54 and the guide portion 50 are engaged with each other.
  • the mounting portion 56 is attached to the mounting portion 30.
  • the terminal 55 and the terminal 51 are electrically connected.
  • the power terminal of the terminal 55 and the power terminal of the terminal 51 are electrically connected, and the communication terminal of the terminal 55 and the communication terminal of the terminal 51 are electrically connected.
  • the mounting portion 56 is removed from the mounting portion 30. ..
  • the terminals 55 and 51 are electrically cut off.
  • the operation of filling the accumulator chamber 17 with compressed air by the user is performed in a state where the compressor 12 is attached to the nail gun 11 and the battery pack 13 is attached to the compressor 12, as shown in FIG.
  • the outline of the control for filling the accumulator chamber 17 with compressed air is as follows.
  • the control circuit 63 controls to supply compressed air to the accumulator chamber 17 when the target pressure is higher than the actual pressure of the accumulator chamber 17.
  • the control circuit 63 raises the striking portion 16 from the standby position and stops it at the bottom dead center before supplying the compressed air to the accumulator chamber 17.
  • the control circuit 63 can set the target pressure according to the model of the nail gun 11.
  • the activated control circuit 63 starts the control example of FIG.
  • step S10 the control circuit 63 determines whether or not the first mounting portion 66 of the compressor 12 is connected to the mounting portion 30 of the nail gun 11. If the control circuit 63 determines No in step S10, the display 68 displays "Please connect the compressor to the nail gun" in step S11, and returns to step S10.
  • the control circuit 63 determines the model of the nail gun 11 and reads the usage history of the nail gun 11 in step S12.
  • the control circuit 63 can determine the model of the nail gun 11 by processing the signal of the model detection sensor 71 or processing the model information input to the display 68.
  • the usage history of the nail gun 11 is, for example, the number of nails 47 housed in the magazine 24, whether or not the nails 47 are clogged in the injection path 23A, air leakage in the pressure accumulator chamber 17 due to a defective seal, and the like. For example, if the wear of the seal member 101 progresses, a seal defect occurs.
  • the control circuit 63 determines that the nail 47 is clogged with the injection path 23A when the striking portion 16 is stopped at a position different from the standby position or the bottom dead center. Further, the control circuit 63 can detect an air leak in the accumulator chamber 17 due to a defective seal from the relationship between the number of nails driven and the actual pressure in the accumulator chamber 17. Information indicating the relationship between the number of nails 47 driven and the actual pressure of the accumulator chamber 17 is stored in the storage unit 63A of the control circuit 63.
  • step S13 the control circuit 63 determines whether or not the state of the nail gun 11 is a state in which compressed air can be supplied to the accumulator chamber 17.
  • the nail 47 does not remain in the magazine 24, the nail 47 is not clogged with the injection path 23A, there is no air leakage in the accumulator chamber 17 due to a defective seal, and the fitting 65 and the holder 38 are normal.
  • it is determined as Yes in step S13.
  • control circuit 63 determines Yes in step S13, the control circuit 63 sets the target pressure of the accumulator chamber 17 in step S14.
  • the control circuit 63 sets the target pressure of the accumulator chamber 17 based on the model of the nail gun 11 or the information input by the user by operating the display 68.
  • the control circuit 63 detects the actual pressure in the accumulator chamber 17 in step S15 following step S14.
  • step S16 the control circuit 63 determines "whether the target pressure is higher than the actual air pressure in the accumulator chamber".
  • control circuit 63 determines Yes in step S16, the control circuit 63 controls to supply compressed air to the accumulator chamber 17 in step S17.
  • the control performed by the control circuit 63 in step S17 includes a first control and a second control.
  • the first control the striking portion 16 stopped at the standby position is raised to the top dead center by rotating the electric motor 20, and then the striking portion 16 is operated from the top dead center to the bottom dead center. , The striking portion 16 is stopped at the bottom dead center.
  • the second control is to rotate the electric motor 59 to drive the compression unit 62, and supply the compressed air discharged from the compression chamber 84 to the accumulator chamber 17 via the passage 86, the passage 88, and the passage 104.
  • the control circuit 63 controls the inverter circuit 61 to adjust the current value supplied to the coil of the stator 79, thereby adjusting the rotation speed of the motor shaft 80 of the electric motor 59, that is, the rotation speed and the motor.
  • the rotational force of the shaft 80 is controlled.
  • the control circuit 63 performs the second control without the user operating the start switch, and after the first control is performed, the user operates the start switch. Then, there is a second option in which the control circuit 63 performs the second control.
  • the user can operate the display 68 to determine the first option and the second option in advance.
  • the control circuit 63 When the control circuit 63 performs the control example of FIG. 8, when the magazine 24 does not have the nail 47 and the nail 47 is not clogged in the injection path 23A, the striking portion 16 is lowered from the top dead center. The striking portion 16 does not strik the nail 47. Then, compressed air is supplied from the compressor 12 to the accumulator chamber 17 in a state where the striking portion 16 is stopped at the bottom dead center.
  • step S18 the control circuit 63 determines "whether the target pressure and the actual pressure of the accumulator chamber 17 are equal to each other".
  • the target pressure is equal to the actual pressure of the accumulator chamber 17 means “the target pressure and the actual pressure of the accumulator chamber 17 are exactly the same” or "the actual pressure of the accumulator chamber 17 is near the target pressure". Either may be used. That is, “the target pressure and the actual pressure of the accumulator chamber 17 are equal” means that the target pressure and the actual pressure of the accumulator chamber 17 are completely the same, and the target pressure and the actual pressure of the accumulator chamber 17 are substantially the same. Any of them may be used. Since the actual pressure of the accumulator chamber 17 changes depending on the temperature condition, such control is performed.
  • the control circuit 63 performs feedback control in steps S17 and S18 so that the actual pressure of the accumulator chamber 17 approaches the target pressure.
  • step S18 the control circuit 63 proceeds to step S17 to continue the second control.
  • the control circuit 63 determines Yes in step S18, the electric motor 59 is stopped in step S19 to end the supply of compressed air to the accumulator chamber 17, and the display 68 displays "compressed air filling end". The display is displayed, and the control example of FIG. 8 ends.
  • step S16 the display 68 displays "exhaust the compressed air in the accumulator chamber to the outside" in step S20, and the process proceeds to step S15.
  • the user visually observes "exhaust the compressed air in the accumulator chamber to the outside" displayed on the display 68, an operating force is applied to the shaft portion 93 of the exhaust valve 89. Then, the exhaust valve 89 connects the passage 88 and the external C1. Therefore, the compressed air in the accumulator chamber 17 is discharged to the outside C1 through the passage 104, the passage 88, and the exhaust passage 92, and the actual pressure in the accumulator chamber 17 decreases.
  • control circuit 63 at the time of determination in step S13, when there is an air leak in the accumulator chamber 17 due to a sealing defect, when the nail 47 remains in the magazine 24, or when the nail 47 is clogged with the injection path 23A. In either case, it is determined as No in step S13. If there is an air leak in the accumulator chamber 17 due to a defective seal, the control circuit 63 determines No in step S13. When the nail 47 remains in the magazine 24, or when the nail 47 is clogged with the injection path 23A, when the striking portion 16 is lowered from the top dead center, the striking portion 16 strikes the nail 47, so that the control circuit 63 is determined to be No in step S13.
  • step S13 the control circuit 63 proceeds to step S21 to prohibit the supply of compressed air to the accumulator chamber 17, displays "maintenance" on the display 68, and ends the control example of FIG. .. Specifically, on the display 68, "Please remove the nail from the magazine”, “The nail is clogged at the injection part”, “Replace the seal member”, “Check the connection status between the connector and the holder”. Please do it. "
  • the control circuit 63 may display "error” instead of "maintenance" on the display 68.
  • the user himself / herself does not send the nail gun 11 to an external organization such as a manufacturer or a repair company, and the user himself / herself attaches the first mounting portion 66 of the compressor 12 to the mounting portion 30.
  • the accumulator chamber 17 can be filled with compressed air by attaching the above. Therefore, it is possible to shorten the period during which the user cannot use the nail gun 11. Further, as shown in FIG. 3, it is also possible to directly attach and detach the battery pack 13 to the mounting portion 30 of the nail gun 11. Therefore, it is not necessary to provide a transformer in the compressor 12.
  • Attaching the compressor 12 to the nail gun 11 can be defined as connecting the compressor 12 to the nail gun 11.
  • Attaching and detaching the compressor 12 to and from the nail gun 11 can be defined as attaching and detaching the compressor 12 to and from the nail gun 11.
  • the battery pack 13 is attached to the compressor 12 and the battery pack 13 is connected to the compressor 12.
  • Attaching and detaching the battery pack 13 to the compressor 12 can be defined as attaching and detaching the battery pack 13 to and from the compressor 12.
  • the compressor 12 is an example of a compressor.
  • the nail gun 11 is an example of a tool.
  • the gas compression unit 102 is an example of the gas compression unit. Compressed air is an example of compressed gas.
  • the accumulator container 37 having the accumulator chamber 17 is an example of the accumulator unit.
  • the exhaust pipe 85 and the fitting 65 are examples of the gas supply unit.
  • the control circuit 63 is an example of a control circuit.
  • the pressure detection sensor 69 is an example of a pressure measuring unit.
  • the storage unit 63A is an example of a storage unit.
  • the exhaust valve 89 is an example of an exhaust mechanism.
  • the first mounting portion 66 is an example of the first mounting portion.
  • the second mounting portion 67 is an example of the second mounting portion.
  • the battery pack 13 is an example of a power source.
  • the guide unit 96 is an example of a connection mechanism.
  • the display 68 is an example of a display unit.
  • the control circuit 25, the inverter circuit 103, and the electric motor 20 are examples of the drive unit.
  • the drive unit is a mechanism for increasing the pressure in the accumulator chamber by operating the striking unit in the second direction.
  • the striking portion 16 is an example of a striking portion.
  • the nail remaining amount detection sensor 43 and the control circuit 25 are examples of the remaining amount detecting unit.
  • the nail 47 is an example of a stopper.
  • the second control performed by the control circuit 63 in step S17 corresponds to "control to increase the gas pressure in the accumulator chamber".
  • the control performed by the control circuit 63 in step S19 corresponds to "control to stop the gas compression unit”.
  • the control circuit 63 controls the rotation and stop of the motor shaft 80 of the electric motor 59, the rotation speed, the rotation speed, and the rotational force, which are performed in steps S17, S18, and 19, "to control the gas compression unit based on the target pressure.” This is an example of "control”.
  • the control circuit 63 controls the striking unit 16 to operate from the top dead center to the bottom dead center and to stop the striking unit 16 at the bottom dead center, but this control is omitted. You may. That is, in step S17, the second control may be executed while the striking portion 16 is stopped at the standby position. In this case, since the control circuit 63 does not need to drive the electric motor 20, the circuit configuration can be simplified. In that case, the nail remaining amount detection sensor 43 can be deleted from the nail gun 11. When the first control is omitted, the target pressure of the accumulator chamber 17 according to the model of the nail gun 11 is set higher than that when the first control is performed.
  • the model of the nail gun 11 is an example of a type of tool.
  • the presence or absence of clogging of the nail 47 in the injection path 23A, the remaining number of nails 47 in the magazine 24, the actual pressure in the accumulator chamber 17, the air leakage in the accumulator chamber 17, and the like are examples of the state of the tool.
  • "Remove the nail from the magazine” "The nail is clogged at the injection part”, “Replace the seal member”, “Check the connection status between the connector and the holder” displayed on the display 68.
  • Information such as "Please” is an example of maintenance information.
  • "Model information of the nail gun 11 input from the display 68" and “model information of the nail gun 11 obtained from the signal of the model detection sensor 71" are examples of "identification information according to the type of tool”. ..
  • the exhaust valve 89 may be a solenoid valve in which the control circuit 63 controls the operation of the shaft portion 93 instead of the one in which the shaft portion 93 is manually operated by the user.
  • the shaft portion 93 is made of a magnetic material, for example, iron.
  • a coil is provided on the body 91.
  • the control circuit 63 shown in FIG. 7 controls the supply and stop of electric power to the coil of the exhaust valve 89.
  • the seal member 95 is pressed against the body 91, the shaft portion 93 is stopped, and the exhaust passage 92 and the external C1 are cut off.
  • electric power is supplied to the coil of the exhaust valve 89, a magnetic attraction force is formed, the shaft portion 93 operates against the urging force of the spring 94, and the exhaust passage 92 and the external C1 are connected to each other.
  • step S20 the control circuit 63 stops the supply of electric power to the coil of the exhaust valve 89 and shuts off the exhaust passage 92 and the external C1.
  • step S20 the control circuit 63 supplies electric power to the exhaust valve 89 to connect the exhaust passage 92 and the external C1. Therefore, in the process of step S20 performed by the control circuit 63, the compressed air in the accumulator chamber 17 is discharged from the exhaust passage 92 to the outside C1.
  • the pressure detection sensor for detecting the actual pressure in the pressure accumulator chamber 17 may be provided in the accumulator container 37 or the air pipe 18 of the nail gun 11. Communication between the control circuit 63 of the compressor 12 and the control circuit 25 of the nail gun 11 may be performed by a signal line or wirelessly. When the control circuit 63 of the compressor 12 and the control circuit 25 of the nail gun 11 communicate wirelessly, the compressor 12 and the nail gun 11 have a transmitter and a receiver, respectively. It is also possible to use Bluetooth (registered trademark) for wireless communication.
  • the tool system, compressor and tool disclosed in this embodiment are not limited to the above-described embodiment, and can be variously changed without departing from the gist thereof.
  • the power source for supplying electric power to the compressor and the tool may be an AC power source instead of the DC power source.
  • the second mounting part of the compressor and the mounting part of the nail gun can attach and detach the adapter connected to the AC power supply.
  • the adapter has a mounting portion 56 and a guide portion 54 similar to the battery pack 13 shown in FIG.
  • the connecting element connecting the exhaust pipe of the compressor and the accumulator container includes a metal pipe as well as a flexible synthetic rubber pipe.
  • the synthetic rubber tube is, for example, a pressure hose.
  • the tool may be a stapler or a rivet instead of a nail gun.
  • the striking part hits an arch-shaped nail.
  • the tacking machine the striking part hits the tack.
  • the control circuit may be a single electric component or an electronic component, or may be a unit having a plurality of electric components or a plurality of electronic components.
  • the compressed gas may be an inert gas instead of air.
  • the inert gas is, for example, nitrogen gas or noble gas.
  • the accumulator chamber filled with the compressed gas, the striking portion that operates in the first direction with the pressure of the compressed gas to strike the stopper, and the striking portion that operates in the second direction opposite to the first direction.
  • the accumulator chamber filled with the compressed gas, the striking portion that operates in the first direction with the pressure of the compressed gas to strike the stopper, and the striking portion that operates in the second direction opposite to the first direction.
  • the present embodiment also discloses the following tool system.
  • the first tool system is With tools
  • a compressor that can be attached to and removed from the tool Is a tool system with The tool is The accumulator filled with compressed gas and A striking portion that operates in the first direction with the pressure of the compressed gas to strike the stopper, and a striking portion.
  • a driving unit that raises the pressure of the compressed gas by operating the striking unit in a second direction opposite to the first direction.
  • the first control circuit that controls the drive unit and Have,
  • the compressor A gas compression unit that generates compressed gas, and A gas supply unit that can be connected to the accumulator and can supply the compressed gas compressed by the gas compression unit to the accumulator.
  • the second control circuit that controls the gas compression unit and Has a tool system.
  • control circuit in the first tool system can set the target pressure of the compressed gas in the accumulator, and controls the gas compression unit based on the target pressure.
  • the third tool system further includes, in the first tool system or the second tool system, a power source provided in the compressor and supplying electric power to the second control circuit and the gas compression unit. ..
  • the fourth tool system is the third tool system, in which the power supply can be attached to and detached from the compressor.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Portable Nailing Machines And Staplers (AREA)

Abstract

Provided is a compressor. A compressor (12) has: a gas compression unit (102) that compresses a gas; a connector (65) that can be connected to an accumulating unit of a nail gun (11) which operates using the compressed gas, and that can supply the compressed gas compressed by the gas compression unit (102) to the accumulating unit; and a control circuit (63) that controls the gas compression unit (102). The control circuit (63) can set a target pressure for the compressed gas in the accumulating unit and also controls the gas compression unit (102) on the basis of the target pressure.

Description

圧縮機及び工具システムCompressor and tool system
本発明は、圧縮気体で作動する工具に接続され、かつ、圧縮気体を工具に供給する圧縮機及び工具システムに関する。 The present invention relates to a compressor and a tool system that are connected to a tool that operates on compressed gas and that supply the compressed gas to the tool.
圧縮気体で作動する工具の一例である打込機が、特許文献1に記載されている。特許文献1に記載された打込機は、ハウジング、ハウジング内に設けられたシリンダ、シリンダの開口部に取り付けられた蓄圧容器、シリンダ内に設けられた打撃部、ハウジング内に設けられた電動モータ、電動モータの回転力を打撃部に伝達する回転円板、シリンダ内及び蓄圧容器内に亘って設けられた蓄圧室、蓄圧容器に取り付けられた充填バルブ、ハウジングに取り付けられたノーズ部、ノーズ部へ供給する止具を収容するマガジンを有する。充填バルブの先端部にジョイント部が設けられ、蓄圧室に圧縮空気を充填するときには、圧縮機がジョイント部に接続される。 Patent Document 1 describes a driving machine which is an example of a tool operated by a compressed gas. The driving machine described in Patent Document 1 includes a housing, a cylinder provided in the housing, a pressure accumulator container attached to the opening of the cylinder, a striking portion provided in the cylinder, and an electric motor provided in the housing. , Rotating disk that transmits the rotational force of the electric motor to the striking part, accumulator chamber provided in the cylinder and in the accumulator container, filling valve attached to the accumulator container, nose part attached to the housing, nose part It has a magazine that houses the fasteners to be supplied to the cylinder. A joint portion is provided at the tip of the filling valve, and when the accumulator chamber is filled with compressed air, the compressor is connected to the joint portion.
特許文献1に記載された打込機は、電動モータが回転されると、打撃部が、蓄圧室の空気圧に抗して上死点に向けて作動される。打撃部が上死点に到達して、回転円板の回転力が打撃部に伝達されなくなると、打撃部は蓄圧室の空気圧で下死点に向けて作動する。打撃部は、ノーズ部に供給された止具を打撃する。 In the driving machine described in Patent Document 1, when the electric motor is rotated, the striking portion is operated toward the top dead center against the air pressure in the accumulator chamber. When the striking portion reaches the top dead center and the rotational force of the rotating disk is not transmitted to the striking portion, the striking portion operates toward the bottom dead center by the air pressure of the accumulator chamber. The striking part strikes the stopper supplied to the nose part.
国際公開第2016/174994号International Publication No. 2016/174994
圧縮気体を利用する工具は、定期的に圧縮気体を充填する必要が生じる。圧縮気体を工具へ充填するには、専門の知識を必要とすることから、ユーザは、工具を外部機関、例えば、メーカーまたは修理業者等にメンテナンスを依頼している。本願発明者は、工具を外部機関へ出している期間、ユーザは工具を使用できない、という課題を認識した。 Tools that utilize compressed gas will need to be filled with compressed gas on a regular basis. Since filling the tool with the compressed gas requires specialized knowledge, the user requests maintenance of the tool from an external organization such as a manufacturer or a repair company. The inventor of the present application has recognized the problem that the user cannot use the tool while the tool is sent to an external organization.
本発明の目的は、ユーザが工具を使用できない期間を短縮可能な圧縮機及び工具システムを提供することである。 An object of the present invention is to provide a compressor and a tool system capable of shortening the period during which a user cannot use a tool.
一実施形態の圧縮機は、気体を圧縮する気体圧縮部と、圧縮気体で作動する工具の蓄圧部に接続可能であり、かつ、前記気体圧縮部で圧縮された圧縮気体を前記蓄圧部に供給可能な気体供給部と、前記気体圧縮部を制御する制御回路と、を有する、圧縮機であって、前記制御回路は、前記蓄圧部の圧縮気体の目標圧力を設定可能であり、かつ、前記目標圧力に基づいて前記気体圧縮部を制御する。 The compressor of one embodiment can be connected to a gas compression unit that compresses a gas and a pressure accumulator unit of a tool operated by the compressed gas, and supplies the compressed gas compressed by the gas compression unit to the accumulator unit. A compressor having a possible gas supply unit and a control circuit for controlling the gas compression unit, wherein the control circuit can set a target pressure of the compressed gas in the accumulator unit, and the control circuit can set the target pressure of the compressed gas in the accumulator unit. The gas compression unit is controlled based on the target pressure.
他の実施形態の圧縮機は、気体を圧縮する気体圧縮部と、圧縮気体を利用する工具の蓄圧部に接続可能であり、かつ、前記気体圧縮部で圧縮された圧縮気体を前記蓄圧部に供給可能な気体供給部と、前記気体圧縮部を制御する制御回路と、を有する、圧縮機であって、前記制御回路は、前記工具が有する駆動部を制御可能である。 The compressor of another embodiment can be connected to a gas compression unit that compresses the gas and a pressure accumulator of a tool that uses the compressed gas, and the compressed gas compressed by the gas compression unit is used as the accumulator. It is a compressor having a gas supply unit that can be supplied and a control circuit that controls the gas compression unit, and the control circuit can control the drive unit of the tool.
他の実施形態の工具システムは、前記圧縮機と、前記圧縮機から供給される圧縮気体により作動する前記工具と、を有する。 The tool system of another embodiment includes the compressor and the tool operated by the compressed gas supplied from the compressor.
一実施形態の圧縮機は、ユーザが工具を使用できない期間を短縮可能である。 The compressor of one embodiment can reduce the period during which the user cannot use the tool.
本発明の一実施形態である圧縮機を釘打ち機に接続した工具システムの側面断面図である。It is a side sectional view of the tool system which connected the compressor which is one Embodiment of this invention to a nail gun. 釘打ち機、圧縮機及び電池パックの取り付け及び取り外しを説明する模式図である。It is a schematic diagram explaining attachment and removal of a nail gun, a compressor and a battery pack. 釘打ち機の装着部に電池パックを取り付けた例の側面図である。It is a side view of the example which attached the battery pack to the mounting part of a nail gun. 釘打ち機の側面断面図である。It is a side sectional view of a nail gun. 図1に示された圧縮機を拡大して示す断面図である。FIG. 3 is an enlarged cross-sectional view showing the compressor shown in FIG. 1. 図5の要部を示す断面図である。It is sectional drawing which shows the main part of FIG. 圧縮機及び釘打ち機の制御系統を示すブロック図である。It is a block diagram which shows the control system of a compressor and a nail gun. 圧縮機の制御回路が行う制御例を含むフローチャートである。It is a flowchart which includes the control example performed by the control circuit of a compressor.
本発明の一実施形態である圧縮機及び工具システムについて、図面を参照して説明する。 A compressor and a tool system according to an embodiment of the present invention will be described with reference to the drawings.
図1に示された工具システム10は、釘打ち機11、圧縮機12及び電池パック13を有する。釘打ち機11、圧縮機12及び電池パック13は、それぞれ別々に設けられた機器である。図2に示されているように、圧縮機12を釘打ち機11に取り付け及び取り外すことが可能である。また、電池パック13を圧縮機12に取り付け及び取り外すことが可能である。さらに、図3のように、電池パック13を釘打ち機11に取り付けることも可能である。 The tool system 10 shown in FIG. 1 includes a nail gun 11, a compressor 12, and a battery pack 13. The nail gun 11, the compressor 12, and the battery pack 13 are separately provided devices. As shown in FIG. 2, the compressor 12 can be attached to and detached from the nail gun 11. Further, the battery pack 13 can be attached to and removed from the compressor 12. Further, as shown in FIG. 3, the battery pack 13 can be attached to the nail gun 11.
釘打ち機11の構成例は、図4に示されている。釘打ち機11は、ハウジング14、シリンダ15、打撃部16、蓄圧室17、空気管18、充填バルブ19、電動モータ20、減速機21、変換部22、射出部23、マガジン24、制御回路25を有する。ハウジング14は、シリンダケース27、モータケース28、ハンドル29、装着部30を有する。ハンドル29及びモータケース28は、シリンダケース27に接続され、装着部30は、ハンドル29及びモータケース28に接続されている。シリンダ15は、シリンダケース27内に設けられている。 An example of the configuration of the nail gun 11 is shown in FIG. The nail gun 11 includes a housing 14, a cylinder 15, a striking section 16, a pressure accumulator chamber 17, an air pipe 18, a filling valve 19, an electric motor 20, a speed reducer 21, a conversion section 22, an injection section 23, a magazine 24, and a control circuit 25. Has. The housing 14 has a cylinder case 27, a motor case 28, a handle 29, and a mounting portion 30. The handle 29 and the motor case 28 are connected to the cylinder case 27, and the mounting portion 30 is connected to the handle 29 and the motor case 28. The cylinder 15 is provided in the cylinder case 27.
電動モータ20は、モータケース28内に設けられている。電動モータ20は、例えば、ブラシレスモータであり、電動モータ20は、ステータ20A及びロータ20Bを有する。ロータ20Bは、モータ軸20Cに取り付けられている。減速機21は、モータケース28内及びシリンダケース27内に亘って設けられている。減速機21は、入力要素、出力要素、及び遊星歯車機構を有する。モータ軸20Cは、減速機21の入力要素に接続されている。減速機21は、入力要素の回転速度に対して出力要素の回転速度を減速させる。 The electric motor 20 is provided in the motor case 28. The electric motor 20 is, for example, a brushless motor, and the electric motor 20 has a stator 20A and a rotor 20B. The rotor 20B is attached to the motor shaft 20C. The speed reducer 21 is provided in the motor case 28 and the cylinder case 27. The speed reducer 21 has an input element, an output element, and a planetary gear mechanism. The motor shaft 20C is connected to the input element of the speed reducer 21. The speed reducer 21 reduces the rotation speed of the output element with respect to the rotation speed of the input element.
インバータ回路103が、モータケース28内に設けられている。インバータ回路103は、複数のスイッチング素子を有し、ステータ20Aに電力を供給する回路を接続及び遮断する。 The inverter circuit 103 is provided in the motor case 28. The inverter circuit 103 has a plurality of switching elements, and connects and disconnects a circuit that supplies power to the stator 20A.
変換部22は、シリンダケース27内に設けられている。変換部22は、減速機21の出力要素の回転力を、打撃部16の作動力に変換する。変換部22は、例えば、ホイール31及びピニオンピン32を有する。ホイール31は、減速機21の出力要素に接続されている。ホイール31は、中心線A1を中心として回転可能であり、ピニオンピン32は、ホイール31の回転方向に間隔をおいて複数設けられている。 The conversion unit 22 is provided in the cylinder case 27. The conversion unit 22 converts the rotational force of the output element of the speed reducer 21 into the operating force of the striking unit 16. The conversion unit 22 has, for example, a wheel 31 and a pinion pin 32. The wheel 31 is connected to the output element of the reducer 21. The wheel 31 can rotate about the center line A1, and a plurality of pinion pins 32 are provided at intervals in the rotation direction of the wheel 31.
打撃部16は、ピストン33及びドライバブレード34を有する。ピストン33は、シリンダ15内に配置され、打撃部16は、シリンダ15の中心線A2に沿った方向に作動可能である。ピストン33の外周面にシール部材101が取り付けられている。シール部材101が環状であり、かつ、合成ゴム製である。シール部材101がシリンダ15の内周面に接触することにより、蓄圧室17を気密にシールする。ドライバブレード34は、ラック35を有する。ラック35は、中心線A2に沿った方向に間隔をおいて設けられた複数の突起を有する。ピニオンピン32は、ホイール31が回転されると、ラック35に係合及び解放される。 The striking portion 16 has a piston 33 and a driver blade 34. The piston 33 is arranged in the cylinder 15, and the striking portion 16 can operate in the direction along the center line A2 of the cylinder 15. A seal member 101 is attached to the outer peripheral surface of the piston 33. The sealing member 101 is annular and is made of synthetic rubber. The pressure accumulator chamber 17 is airtightly sealed by the sealing member 101 coming into contact with the inner peripheral surface of the cylinder 15. The driver blade 34 has a rack 35. The rack 35 has a plurality of protrusions provided at intervals in the direction along the center line A2. The pinion pin 32 engages and disengages the rack 35 as the wheel 31 is rotated.
回転規制機構57が、ハウジング14内に設けられている。回転規制機構57は、電動モータ20の回転力がホイール31に伝達されてホイール31が回転することを許容し、ホイール31が、打撃部16から受ける付勢力で回転することを阻止する。 The rotation control mechanism 57 is provided in the housing 14. The rotation control mechanism 57 allows the rotational force of the electric motor 20 to be transmitted to the wheel 31 to rotate the wheel 31, and prevents the wheel 31 from rotating due to the urging force received from the striking portion 16.
射出部23は、シリンダケース27に取り付けられており、射出部23は、射出路23Aを有する。プッシュレバー46が、射出部23に取り付けられている。ユーザは、プッシュレバー46を相手材W1に接触及び離間させることが可能である。 The injection unit 23 is attached to the cylinder case 27, and the injection unit 23 has an injection path 23A. The push lever 46 is attached to the injection portion 23. The user can bring the push lever 46 into contact with and separate from the mating material W1.
バンパ36がハウジング14内に設けられている。バンパ36は合成ゴム製であり、バンパ36の一部はシリンダ15内に配置されている。蓄圧容器37がハウジング14内に設けられている。蓄圧容器37は、シリンダ15に取り付けられている。蓄圧室17は、シリンダ15内及び蓄圧容器37内に亘って設けられている。蓄圧室17に圧縮気体、例えば、圧縮空気が充填される。打撃部16は、蓄圧室17の空気圧を受け、ピストン33がバンパ36に近づく第1方向B1で付勢されている。打撃部16は第1方向B1で作動可能であることに加え、ピストン33がバンパ36から離間される第2方向B2で作動可能である。第1方向B1と第2方向B2とは互いに逆である。 The bumper 36 is provided in the housing 14. The bumper 36 is made of synthetic rubber, and a part of the bumper 36 is arranged in the cylinder 15. The accumulator container 37 is provided in the housing 14. The accumulator container 37 is attached to the cylinder 15. The accumulator chamber 17 is provided in the cylinder 15 and in the accumulator container 37. The accumulator chamber 17 is filled with compressed gas, for example, compressed air. The striking portion 16 receives the air pressure of the accumulator chamber 17 and is urged in the first direction B1 in which the piston 33 approaches the bumper 36. In addition to being operable in the first direction B1, the striking portion 16 is operable in the second direction B2 where the piston 33 is separated from the bumper 36. The first direction B1 and the second direction B2 are opposite to each other.
また、マガジン24は、釘47を収容する。複数の釘47が1列に並べられ、かつ、釘47同士は接続具によって接続されている。フィーダ48がマガジン24に設けられ、フィーダ48は釘47を射出路23Aへ供給する。トリガ49がハンドル29に設けられ、ユーザはハンドル29を手で握ってトリガ49に操作力を付加及び操作力を解除可能である。 Further, the magazine 24 accommodates the nail 47. A plurality of nails 47 are arranged in a row, and the nails 47 are connected to each other by a connecting tool. A feeder 48 is provided in the magazine 24, and the feeder 48 supplies the nail 47 to the injection path 23A. A trigger 49 is provided on the handle 29, and the user can grip the handle 29 by hand to add an operating force to the trigger 49 and release the operating force.
空気管18は、シリンダケース27内、ハンドル29内及び装着部30内に亘って設けられている。空気管18は、圧縮空気を蓄圧室17へ送る経路を構成する。空気管18は、一例として金属製であり、空気管18は、通路104を有する。空気管18の第1端部は蓄圧容器37に取り付けられており、通路104は、蓄圧室17につながっている。 The air pipe 18 is provided in the cylinder case 27, the handle 29, and the mounting portion 30. The air pipe 18 constitutes a path for sending compressed air to the accumulator chamber 17. The air pipe 18 is made of metal as an example, and the air pipe 18 has a passage 104. The first end of the air pipe 18 is attached to the accumulator container 37, and the passage 104 is connected to the accumulator chamber 17.
図5及び図6のように、装着部30にホルダ38が取り付けられている。ホルダ38は筒形状であり、ホルダ38は、支持孔38Aを有する。支持孔38Aの中心線A3と、中心線A2とが平行である。空気管18の第2端部は、ホルダ38に接続されている。充填バルブ19は、支持孔38Aに設けられている。充填バルブ19は、プランジャ19Aを有する。プランジャ19Aは外力によって作動される。 As shown in FIGS. 5 and 6, the holder 38 is attached to the mounting portion 30. The holder 38 has a tubular shape, and the holder 38 has a support hole 38A. The center line A3 of the support hole 38A and the center line A2 are parallel to each other. The second end of the air pipe 18 is connected to the holder 38. The filling valve 19 is provided in the support hole 38A. The filling valve 19 has a plunger 19A. The plunger 19A is operated by an external force.
図1のように、ディスプレイ39が、ハウジング14、例えば装着部30に設けられている。ディスプレイ39は、例えば液晶パネルであり、タッチスイッチなどを有する。釘打ち機11は、図7に示されたトリガスイッチ40、プッシュレバースイッチ41、打撃部検出センサ42、釘残量検出センサ43、電流値検出回路44、位相検出センサ45を有する。トリガスイッチ40は、トリガ49に操作力が付加されているか否かを検出して信号を出力する。プッシュレバースイッチ41は、プッシュレバー46が相手材W1に押し付けられているか否かを検出して信号を出力する。 As shown in FIG. 1, the display 39 is provided in the housing 14, for example, the mounting portion 30. The display 39 is, for example, a liquid crystal panel and has a touch switch and the like. The nail gun 11 has a trigger switch 40, a push lever switch 41, a striking portion detection sensor 42, a nail remaining amount detection sensor 43, a current value detection circuit 44, and a phase detection sensor 45 shown in FIG. 7. The trigger switch 40 detects whether or not an operating force is applied to the trigger 49 and outputs a signal. The push lever switch 41 detects whether or not the push lever 46 is pressed against the mating material W1 and outputs a signal.
打撃部検出センサ42は、打撃部16の作動方向における打撃部16の位置を検出して信号を出力する。釘残量検出センサ43は、マガジン24に収容されている釘47の残量、つまり、釘47の数を検出して信号を出力する。電流値検出回路44は、電動モータ20に供給される電流値を検出して信号を出力する。位相検出センサ45は、モータ軸20Cの回転方向の位置を検出して信号を出力する。 The striking portion detection sensor 42 detects the position of the striking portion 16 in the operating direction of the striking portion 16 and outputs a signal. The nail remaining amount detection sensor 43 detects the remaining amount of nails 47 housed in the magazine 24, that is, the number of nails 47, and outputs a signal. The current value detection circuit 44 detects the current value supplied to the electric motor 20 and outputs a signal. The phase detection sensor 45 detects the position of the motor shaft 20C in the rotational direction and outputs a signal.
制御回路25は、ハウジング14内、例えば、装着部30内及びモータケース28内に亘って設けられている。制御回路25は、入力ポート、出力ポート、中央演算処理装置、記憶装置を有するマイクロコンピュータである。制御回路25は、トリガスイッチ40の信号、プッシュレバースイッチ41の信号、打撃部検出センサ42の信号、釘残量検出センサ43の信号、電流値検出回路44の信号を処理する。制御回路25は、位相検出センサ45の信号を処理することにより、モータ軸20Cの単位時間当たりの回転数、つまり回転速度を推定する。 The control circuit 25 is provided in the housing 14, for example, in the mounting portion 30 and in the motor case 28. The control circuit 25 is a microcomputer having an input port, an output port, a central processing unit, and a storage device. The control circuit 25 processes the signal of the trigger switch 40, the signal of the push lever switch 41, the signal of the striking part detection sensor 42, the signal of the nail remaining amount detection sensor 43, and the signal of the current value detection circuit 44. The control circuit 25 estimates the rotation speed of the motor shaft 20C per unit time, that is, the rotation speed by processing the signal of the phase detection sensor 45.
装着部30は、ガイド部50及び端子51を有する。ガイド部50は、装着部30に対して直線状に延ばされている。ガイド部50は、中心線A3に沿った方向に延ばされている。ガイド部50は、例えば、レール、溝、突起の少なくとも1つを有する。端子51は、電力端子及び通信端子を含む。電力端子は、正極端子及び負極端子を有し、図7に示すように、電力線51A,51Bが、電力端子に接続されている。通信端子は信号の伝達を行うものであり、通信線51Cが通信端子に接続されている。圧縮機12は、装着部30へ接続及び取り外しが可能である。また、電池パック13は、装着部30への取り付け及び取り外しが可能である。 The mounting portion 30 has a guide portion 50 and a terminal 51. The guide portion 50 is extended linearly with respect to the mounting portion 30. The guide portion 50 is extended in a direction along the center line A3. The guide portion 50 has, for example, at least one of a rail, a groove, and a protrusion. The terminal 51 includes a power terminal and a communication terminal. The power terminal has a positive electrode terminal and a negative electrode terminal, and as shown in FIG. 7, power lines 51A and 51B are connected to the power terminal. The communication terminal transmits signals, and the communication line 51C is connected to the communication terminal. The compressor 12 can be connected to and detached from the mounting portion 30. Further, the battery pack 13 can be attached to and detached from the mounting portion 30.
図2に示されるように、電池パック13は、収容ケース52、電池セル53、ガイド部54及び端子55を有する。電池セル53は、収容ケース52の内部に複数個収容されている。電池セル53は、充電及び放電が可能な二次電池であり、電池セル53は、リチウムイオン電池、ニッケル水素電池、リチウムイオンポリマー電池、ニッケルカドミウム電池の何れかを用いることができる。収容ケース52は、装着部56を有し、装着部56にガイド部54及び端子55が設けられている。ガイド部54は、直線状に延ばされており、ガイド部54は、溝、レール、突起の少なくとも1つを有する。端子55は、電力端子および通信端子を含む。電力端子は、電池セル53へ電気的に接続されている。 As shown in FIG. 2, the battery pack 13 has a storage case 52, a battery cell 53, a guide portion 54, and a terminal 55. A plurality of battery cells 53 are housed inside the housing case 52. The battery cell 53 is a secondary battery capable of charging and discharging, and any of a lithium ion battery, a nickel hydrogen battery, a lithium ion polymer battery, and a nickel cadmium battery can be used as the battery cell 53. The storage case 52 has a mounting portion 56, and the mounting portion 56 is provided with a guide portion 54 and a terminal 55. The guide portion 54 is linearly extended, and the guide portion 54 has at least one of a groove, a rail, and a protrusion. The terminal 55 includes a power terminal and a communication terminal. The power terminal is electrically connected to the battery cell 53.
次に、図3のように、電池パック13の装着部56を、釘打ち機11の装着部30に取り付けた状態で、釘打ち機11を使用する例を説明する。装着部56を装着部30に取り付ける場合、図示はされていないが、ガイド部54とガイド部50とをスライドさせると、ガイド部54とガイド部50とが係合される。装着部56が装着部30へ取り付けられると、端子55と端子51とが電気的に接続される。また、圧縮機12は装着部30に取り付けられていない。このため、充填バルブ19のプランジャ19Aに外力は付加されず、充填バルブ19は、通路104と、ハウジング14の外部C1とを遮断している。 Next, as shown in FIG. 3, an example in which the nail gun 11 is used with the mounting portion 56 of the battery pack 13 attached to the mounting portion 30 of the nail gun 11 will be described. When the mounting portion 56 is attached to the mounting portion 30, although not shown, when the guide portion 54 and the guide portion 50 are slid, the guide portion 54 and the guide portion 50 are engaged with each other. When the mounting portion 56 is attached to the mounting portion 30, the terminal 55 and the terminal 51 are electrically connected. Further, the compressor 12 is not attached to the mounting portion 30. Therefore, no external force is applied to the plunger 19A of the filling valve 19, and the filling valve 19 shuts off the passage 104 and the external C1 of the housing 14.
制御回路25は、トリガ49に対する操作力が解除されていること、またはプッシュレバー46が相手材W1から離間されていることのうち、少なくとも一方を検出すると、インバータ回路103を制御して、電動モータ20に対する電力の供給を停止する。このため、電動モータ20は停止されている。打撃部16は、蓄圧室17の空気圧を受けて常時、第1方向B1で付勢されている。ラック35とピニオンピン32とが係合され、打撃部16が受けた付勢力は、ホイール31に伝達されている。回転規制機構57は、ホイール31の回転を阻止している。したがって、打撃部16は待機位置で停止されている。 When the control circuit 25 detects at least one of the fact that the operating force for the trigger 49 is released or the push lever 46 is separated from the mating material W1, the control circuit 25 controls the inverter circuit 103 to control the electric motor. The power supply to 20 is stopped. Therefore, the electric motor 20 is stopped. The striking portion 16 is constantly urged in the first direction B1 by receiving the air pressure of the accumulator chamber 17. The rack 35 and the pinion pin 32 are engaged with each other, and the urging force received by the striking portion 16 is transmitted to the wheel 31. The rotation regulation mechanism 57 prevents the wheel 31 from rotating. Therefore, the striking portion 16 is stopped at the standby position.
打撃部16の待機位置は、打撃部16が下死点と上死点との間であり、かつ、ピストン33がバンパ36から離間されている状態である。打撃部16の上死点は、図1に二点鎖線で示すように、ピストン33がバンパ36から最も離れた位置である。打撃部16の下死点は、図1に実線で示すように、ピストン33がバンパ36に接触した位置である。 The standby position of the striking portion 16 is a state in which the striking portion 16 is between the bottom dead center and the top dead center, and the piston 33 is separated from the bumper 36. The top dead center of the striking portion 16 is the position where the piston 33 is farthest from the bumper 36, as shown by the alternate long and short dash line in FIG. The bottom dead center of the striking portion 16 is the position where the piston 33 comes into contact with the bumper 36, as shown by the solid line in FIG.
制御回路25は、トリガ49に操作力が付加され、かつ、プッシュレバー46が相手材W1に押し付けられていること、を検出すると、インバータ回路103を制御して、電池パック13の電力を電動モータ20に供給させる。電動モータ20のモータ軸20Cの回転力は、減速機21を経由してホイール31に伝達される。すると、ホイール31の回転力は、打撃部16に伝達され、打撃部16が第2方向B2で作動、つまり、上昇する。打撃部16が上昇すると蓄圧室17の圧力が上昇する。打撃部16が上死点に到達すると、全てのピニオンピン32がラック35から解放される。すると、打撃部16は、蓄圧室17の空気圧で第1方向B1で作動、つまり、下降する。打撃部16が下降すると、ドライバブレード34は、射出路23Aに供給された釘47を打撃し、釘47は相手材W1へ打ち込まれる。 When the control circuit 25 detects that an operating force is applied to the trigger 49 and the push lever 46 is pressed against the mating material W1, it controls the inverter circuit 103 to transfer the electric power of the battery pack 13 to the electric motor. Supply to 20. The rotational force of the motor shaft 20C of the electric motor 20 is transmitted to the wheel 31 via the speed reducer 21. Then, the rotational force of the wheel 31 is transmitted to the striking portion 16, and the striking portion 16 operates in the second direction B2, that is, rises. When the striking portion 16 rises, the pressure in the accumulator chamber 17 rises. When the striking portion 16 reaches top dead center, all pinion pins 32 are released from the rack 35. Then, the striking portion 16 operates in the first direction B1 by the air pressure of the accumulator chamber 17, that is, descends. When the striking portion 16 descends, the driver blade 34 strikes the nail 47 supplied to the injection path 23A, and the nail 47 is driven into the mating material W1.
また、釘47が相手材W1に打ち込まれた後、ピストン33はバンパ36に衝突する。つまり、打撃部16は下死点に到達する。バンパ36は中心線A2に沿った方向の荷重を受けて弾性変形し、バンパ36は打撃部16の運動エネルギの一部を吸収する。 Further, after the nail 47 is driven into the mating material W1, the piston 33 collides with the bumper 36. That is, the striking portion 16 reaches the bottom dead center. The bumper 36 is elastically deformed by receiving a load in the direction along the center line A2, and the bumper 36 absorbs a part of the kinetic energy of the striking portion 16.
制御回路25は、釘47が相手材W1に打ち込まれた反動でプッシュレバー46が相手材W1から離間された後も、電動モータ20を回転させている。このため、ホイール31のピニオンピン32がラック35に係合され、打撃部16は下死点から上昇される。制御回路25は、打撃部検出センサ42の信号を処理して、中心線A2に沿った方向における打撃部16の位置を検出し、かつ、打撃部16が待機位置に到達したか否かを判断する。制御回路25は、打撃部16が待機位置に到達すると、電動モータ20を停止させる。 The control circuit 25 rotates the electric motor 20 even after the push lever 46 is separated from the mating material W1 by the reaction of the nail 47 being driven into the mating material W1. Therefore, the pinion pin 32 of the wheel 31 is engaged with the rack 35, and the striking portion 16 is raised from the bottom dead center. The control circuit 25 processes the signal of the striking portion detection sensor 42 to detect the position of the striking portion 16 in the direction along the center line A2, and determines whether or not the striking portion 16 has reached the standby position. do. The control circuit 25 stops the electric motor 20 when the striking portion 16 reaches the standby position.
制御回路25は、位相検出センサ45の信号及び打撃部検出センサ42の信号を処理することにより、打撃部16が上死点から下死点に向けて作動した回数を検出及び記憶可能である。制御回路25は、釘打ち機11の使用履歴を記憶可能である。使用履歴は、蓄圧室17に前回圧縮空気を供給した後に打撃部16が上死点から下死点に向けて作動した回数、マガジン24に収容されている釘47の数、釘47が射出路23Aで詰まっているか否か等である。制御回路25は、空打ち防止制御を行うことが可能である。空打ち防止制御は、マガジン24に収容されている釘47の数が所定数以下であると、トリガ49に操作力が付加され、かつ、プッシュレバー46が相手材W1に押し付けられたとしても、電動モータ20の停止を保持する制御である。 The control circuit 25 can detect and store the number of times the striking unit 16 operates from the top dead center to the bottom dead center by processing the signal of the phase detection sensor 45 and the signal of the striking unit detection sensor 42. The control circuit 25 can store the usage history of the nail gun 11. The usage history includes the number of times the striking unit 16 operates from the top dead center to the bottom dead center after the previous supply of compressed air to the accumulator chamber 17, the number of nails 47 housed in the magazine 24, and the nail 47 is the injection path. Whether or not it is clogged with 23A. The control circuit 25 can perform blank hit prevention control. In the blank hit prevention control, when the number of nails 47 housed in the magazine 24 is less than a predetermined number, an operating force is applied to the trigger 49, and even if the push lever 46 is pressed against the mating material W1. It is a control for holding the stop of the electric motor 20.
制御回路25は、打撃部検出センサ42の信号及び電流値検出回路44の信号を処理することにより、釘47が射出路23Aで詰まっているか否かを検出可能である。釘47が射出路23Aで詰まっている場合における電流値は、射出路23Aに釘47が詰まっていない場合における電流値よりも高い。制御回路25は、打撃部16が上死点から下死点に向けて作動した後、打撃部16が上死点と下死点との間で停止された場合、釘47が射出路23Aで詰まっていると判断する。 The control circuit 25 can detect whether or not the nail 47 is clogged in the injection path 23A by processing the signal of the impact portion detection sensor 42 and the signal of the current value detection circuit 44. The current value when the nail 47 is clogged in the injection path 23A is higher than the current value when the nail 47 is not clogged in the injection path 23A. In the control circuit 25, when the striking portion 16 operates from the top dead center to the bottom dead center and then the striking portion 16 is stopped between the top dead center and the bottom dead center, the nail 47 is inserted in the injection path 23A. Judge that it is clogged.
打撃部16の目標打撃力は、釘打ち機11の機種により異なる。釘打ち機11の機種は、釘47を打ち込む相手材W1の硬度及び材質、釘47の長さ、釘47の太さ等を含む。本実施形態の釘打ち機11において、打撃部16が釘47に加える実際の打撃力は、蓄圧室17の最大圧力に応じて定まる。蓄圧室17の最大圧力は、打撃部16が上死点に位置する場合おける蓄圧室17の空気圧である。蓄圧室17の最大圧力は、蓄圧室17の初期圧力、中心線A1に対して垂直な平面内におけるピストン33の受圧面積、打撃部16が下死点から上死点まで作動するストローク量に応じて定まる。蓄圧室17の初期圧力は、打撃部16が下死点に位置している場合における蓄圧室17の空気圧である。本実施形態の釘打ち機11は、ピストン33の受圧面積が固定され、かつ、打撃部16が下死点から上死点まで作動するストローク量が固定されている。このため、釘打ち機11は、蓄圧室17の初期圧力を調整することにより、打撃部16が釘47に加える実際の打撃力を調整可能である。 The target striking force of the striking portion 16 differs depending on the model of the nailing machine 11. The model of the nailing machine 11 includes the hardness and material of the mating material W1 into which the nail 47 is driven, the length of the nail 47, the thickness of the nail 47, and the like. In the nail gun 11 of the present embodiment, the actual striking force applied to the nail 47 by the striking portion 16 is determined according to the maximum pressure of the accumulator chamber 17. The maximum pressure of the accumulator chamber 17 is the air pressure of the accumulator chamber 17 when the striking portion 16 is located at the top dead center. The maximum pressure of the accumulator chamber 17 depends on the initial pressure of the accumulator chamber 17, the pressure receiving area of the piston 33 in the plane perpendicular to the center line A1, and the stroke amount at which the striking portion 16 operates from the bottom dead center to the top dead center. It is decided. The initial pressure of the accumulator chamber 17 is the air pressure of the accumulator chamber 17 when the striking portion 16 is located at the bottom dead center. In the nail gun 11 of the present embodiment, the pressure receiving area of the piston 33 is fixed, and the stroke amount at which the striking portion 16 operates from the bottom dead center to the top dead center is fixed. Therefore, the nail gun 11 can adjust the actual striking force applied to the nail 47 by the striking portion 16 by adjusting the initial pressure of the accumulator chamber 17.
図1のように、圧縮機12に釘打ち機11の装着部30を取り付けることにより、蓄圧室17の初期圧力を調整することが可能である。圧縮機12は、図5及び図6のように、ハウジング58、電動モータ59、減速機60、インバータ回路61、圧縮部62、制御回路63、排気管85、接続具65、第1装着部66、第2装着部67、ディスプレイ68、圧力検出センサ69、着脱検出センサ70、位相検出センサ72、機種検出センサ71、電流値検出回路73、接続状態検出センサ100を有する。電動モータ59、減速機60、インバータ回路61及び圧縮部62により、気体圧縮部102が構成されている。 As shown in FIG. 1, the initial pressure of the accumulator chamber 17 can be adjusted by attaching the mounting portion 30 of the nail gun 11 to the compressor 12. As shown in FIGS. 5 and 6, the compressor 12 includes a housing 58, an electric motor 59, a speed reducer 60, an inverter circuit 61, a compression unit 62, a control circuit 63, an exhaust pipe 85, a connector 65, and a first mounting unit 66. The second mounting unit 67, the display 68, the pressure detection sensor 69, the attachment / detachment detection sensor 70, the phase detection sensor 72, the model detection sensor 71, the current value detection circuit 73, and the connection state detection sensor 100 are provided. The gas compression unit 102 is composed of an electric motor 59, a speed reducer 60, an inverter circuit 61, and a compression unit 62.
図2及び図5のように、ハウジング58の底面の四隅に脚部106が設けられている。ユーザは、全ての脚部106を地面107に接触させて圧縮機12を地面に置いた状態とし、電池パック13及び釘打ち機11を、圧縮機12に対して図2のように移動させることで、電池パック13を圧縮機12に取り付ける作業、及び釘打ち機11を圧縮機12に取り付ける作業を行うことにより、図1のように工具システム10を組み立てることが可能である。組み立てられた工具システム10は、圧縮機12の脚部106が地面107に接触され、電池パック13及び釘打ち機11が、圧縮機12に装着された状態で、自立可能である。 As shown in FIGS. 2 and 5, legs 106 are provided at the four corners of the bottom surface of the housing 58. The user puts the compressor 12 on the ground by bringing all the legs 106 into contact with the ground 107, and moves the battery pack 13 and the nail gun 11 with respect to the compressor 12 as shown in FIG. The tool system 10 can be assembled as shown in FIG. 1 by attaching the battery pack 13 to the compressor 12 and attaching the nail gun 11 to the compressor 12. The assembled tool system 10 can stand on its own with the legs 106 of the compressor 12 in contact with the ground 107 and the battery pack 13 and the nail gun 11 mounted on the compressor 12.
圧縮部62は、シリンダ74、クランクピン75、ピストン76、コネクティングロッド77を有する。電動モータ59は、例えばブラシレスモータであり、電動モータ59は、ロータ78、ステータ79及びモータ軸80を有する。減速機60は、モータ軸80に取り付けられた駆動ギヤ81と、駆動ギヤ81に噛み合った従動ギヤ82と、を有する。電動モータ59のモータ軸80の回転力は、減速機60によって増幅される。クランクピン75は、従動ギヤ82の回転中心から偏心した位置に設けられ、クランクピン75は、コネクティングロッド77に接続されている。コネクティングロッド77はピストン76に連結されている。 The compression unit 62 includes a cylinder 74, a crankpin 75, a piston 76, and a connecting rod 77. The electric motor 59 is, for example, a brushless motor, and the electric motor 59 has a rotor 78, a stator 79, and a motor shaft 80. The speed reducer 60 has a drive gear 81 attached to the motor shaft 80 and a driven gear 82 meshed with the drive gear 81. The rotational force of the motor shaft 80 of the electric motor 59 is amplified by the speed reducer 60. The crankpin 75 is provided at a position eccentric from the center of rotation of the driven gear 82, and the crankpin 75 is connected to the connecting rod 77. The connecting rod 77 is connected to the piston 76.
吸気弁83がシリンダ74に設けられ、シリンダ74内に圧縮室84が設けられている。排気管85がシリンダ74に取り付けられ、排気管85は通路86を有する。通路86は圧縮室84につながっている。吸気弁83は、シリンダ74の外部の空気が圧縮室84へ吸入されることを可能とし、かつ、圧縮室84の空気がシリンダ74の外部へ排出されることを阻止する。排気弁87が、圧縮室84と通路86との間に設けられている。排気弁87は、空気が圧縮室84から通路86へ吐出されることを可能とし、空気が通路86から圧縮室84に戻ることを阻止する。 The intake valve 83 is provided in the cylinder 74, and the compression chamber 84 is provided in the cylinder 74. The exhaust pipe 85 is attached to the cylinder 74, and the exhaust pipe 85 has a passage 86. The passage 86 is connected to the compression chamber 84. The intake valve 83 allows the air outside the cylinder 74 to be sucked into the compression chamber 84, and prevents the air in the compression chamber 84 from being discharged to the outside of the cylinder 74. An exhaust valve 87 is provided between the compression chamber 84 and the passage 86. The exhaust valve 87 allows air to be discharged from the compression chamber 84 to the passage 86 and prevents air from returning from the passage 86 to the compression chamber 84.
ピストン76はシリンダ74内で作動可能である。従動ギヤ82の回転力でピストン76が往復動される。ピストン76が作動されると、シリンダ74の外部の空気が吸気弁83を経由して圧縮室84に空気が吸い込まれ、かつ、圧縮室84で圧縮された空気が、排気弁87を経由して通路86へ吐出される。 The piston 76 is operable in the cylinder 74. The piston 76 is reciprocated by the rotational force of the driven gear 82. When the piston 76 is operated, the air outside the cylinder 74 is sucked into the compression chamber 84 via the intake valve 83, and the air compressed in the compression chamber 84 passes through the exhaust valve 87. It is discharged to the passage 86.
図6のように、通路88、排気弁89及び差し込み部90が、接続具65に設けられている。差し込み部90は、接続具65の一部を、通路88の中心線A4に沿った方向に突出または延ばしたものであり、接続具65から差し込み部90に亘って通路88が設けられている。差し込み部90は、接触子90Aを有する。接続具65がハウジング58に固定された状態で、通路88は通路86につながっている。 As shown in FIG. 6, the passage 88, the exhaust valve 89, and the insertion portion 90 are provided in the connector 65. The insertion portion 90 is a portion of the connector 65 that protrudes or extends in a direction along the center line A4 of the passage 88, and the passage 88 is provided from the connector 65 to the insertion portion 90. The insertion portion 90 has a contact 90A. The passage 88 is connected to the passage 86 with the fitting 65 fixed to the housing 58.
排気弁89は、ボディ91、排気通路92、軸部93、スプリング94、シール部材95を有する。ボディ91は接続具65に固定され、排気通路92はボディ91に設けられている。スプリング94は排気通路92に設けられている。軸部93は、排気通路92から外部C1に亘って設けられている。軸部93は、ボディ91に対して作動可能である。軸部93はスプリング94によって付勢されている。シール部材95は、排気通路92に設けられ、かつ、軸部93に取り付けられている。 The exhaust valve 89 has a body 91, an exhaust passage 92, a shaft portion 93, a spring 94, and a seal member 95. The body 91 is fixed to the connector 65, and the exhaust passage 92 is provided in the body 91. The spring 94 is provided in the exhaust passage 92. The shaft portion 93 is provided from the exhaust passage 92 to the external C1. The shaft portion 93 is operable with respect to the body 91. The shaft portion 93 is urged by a spring 94. The seal member 95 is provided in the exhaust passage 92 and is attached to the shaft portion 93.
排気弁89は、一例としてユーザによって操作される。ユーザが軸部93に操作力を付加すると、シール部材95がボディ91から離間し、通路88と外部C1とが、排気通路92によって接続される。ユーザが軸部93に対する操作力を解除すると、シール部材95がスプリング94によってボディ91へ押し付けられ、通路88と外部C1とが遮断される。 The exhaust valve 89 is operated by the user as an example. When the user applies an operating force to the shaft portion 93, the seal member 95 is separated from the body 91, and the passage 88 and the external C1 are connected by the exhaust passage 92. When the user releases the operating force on the shaft portion 93, the seal member 95 is pressed against the body 91 by the spring 94, and the passage 88 and the external C1 are cut off.
第1装着部66は、ハウジング58に設けられており、第1装着部66は、ガイド部96及び端子97を有する。ガイド部96は、第1装着部66に対して直線状に延ばされている。ガイド部96は、差し込み部90が接続具65から延ばされた方向と同じ方向に延ばされている。ガイド部96は、例えば、レール、溝、突起の少なくとも1つを有する。端子97は、電力端子及び通信端子を含む。電力端子は、正極端子及び負極端子を有し、図7に示すように、電力線97A,97Bが、電力端子に接続されている。通信端子は信号の伝達を行うものであり、通信線97Cが通信端子に接続されている。第1装着部66は、装着部30に対して接続及び取り外しが可能である。 The first mounting portion 66 is provided in the housing 58, and the first mounting portion 66 has a guide portion 96 and a terminal 97. The guide portion 96 extends linearly with respect to the first mounting portion 66. The guide portion 96 is extended in the same direction as the insertion portion 90 is extended from the connector 65. The guide portion 96 has, for example, at least one of a rail, a groove, and a protrusion. The terminal 97 includes a power terminal and a communication terminal. The power terminal has a positive electrode terminal and a negative electrode terminal, and as shown in FIG. 7, power lines 97A and 97B are connected to the power terminal. The communication terminal transmits signals, and the communication line 97C is connected to the communication terminal. The first mounting portion 66 can be connected to and disconnected from the mounting portion 30.
第2装着部67は、ハウジング58において、第1装着部66が設けられた箇所とは異なる箇所に設けられている。第2装着部67は、ガイド部98及び端子99を有する。ガイド部98は、第2装着部67に対して直線状に延ばされている。ガイド部98は、ガイド部96が延ばされた方向とは、異なる方向に延ばされている。ガイド部98は、例えば、レール、溝、突起の少なくとも1つを有する。端子99は、電力端子及び通信端子を含む。端子99の電力端子は、正極端子及び負極端子を有し、端子99の電力端子は、電力線97A,97Bに接続されている。通信端子は、電池パック13との間で信号の伝達を行うものであり、端子99の通信端子は、通信線97Cに接続されている。電池パック13の装着部56は、第2装着部67に対して接続及び取り外しが可能である。 The second mounting portion 67 is provided in the housing 58 at a position different from the location where the first mounting portion 66 is provided. The second mounting portion 67 has a guide portion 98 and a terminal 99. The guide portion 98 extends linearly with respect to the second mounting portion 67. The guide portion 98 is extended in a direction different from the direction in which the guide portion 96 is extended. The guide portion 98 has, for example, at least one of a rail, a groove, and a protrusion. Terminal 99 includes a power terminal and a communication terminal. The power terminal of the terminal 99 has a positive electrode terminal and a negative electrode terminal, and the power terminal of the terminal 99 is connected to the power lines 97A and 97B. The communication terminal transmits a signal to and from the battery pack 13, and the communication terminal of the terminal 99 is connected to the communication line 97C. The mounting portion 56 of the battery pack 13 can be connected to and disconnected from the second mounting portion 67.
ディスプレイ68は、電源のオンスイッチ、電源のオフスイッチ、及び開始スイッチを有する。これらのスイッチは、ユーザにより操作される。オンスイッチが操作されると、電池パック13の電力が、制御回路63に供給されて制御回路63が起動される。オフスイッチが操作されると、制御回路63に対する電力の供給が停止され、制御回路63がシャットダウンされる。ユーザが開始スイッチを操作すると、制御回路63が圧縮機12を駆動させ、圧縮機12で生成された圧縮空気が、釘打ち機11の蓄圧室17へ供給される。 The display 68 has a power on switch, a power off switch, and a start switch. These switches are operated by the user. When the on switch is operated, the electric power of the battery pack 13 is supplied to the control circuit 63 to activate the control circuit 63. When the off switch is operated, the power supply to the control circuit 63 is stopped and the control circuit 63 is shut down. When the user operates the start switch, the control circuit 63 drives the compressor 12, and the compressed air generated by the compressor 12 is supplied to the accumulator chamber 17 of the nail gun 11.
ディスプレイ68は、蓄圧室17の実際圧力の表示、電源のオン及び電源のオフの表示、メンテナンス表示等を行う。メンテナンス表示は、シール部材101の交換時期、マガジン24における釘47の数、釘47が射出路23Aに詰まっていること、接続具65とホルダ38との接続不良、等の情報を含む。ユーザは、ディスプレイ68を操作することにより、電源をオン及び電源をオフすること、釘打ち機11の機種を入力すること、蓄圧室17の目標圧力を入力することが可能である。 The display 68 displays the actual pressure of the accumulator chamber 17, displays the power on and off, displays the maintenance, and the like. The maintenance display includes information such as the replacement time of the seal member 101, the number of nails 47 in the magazine 24, the fact that the nails 47 are clogged in the injection path 23A, the connection failure between the connector 65 and the holder 38, and the like. By operating the display 68, the user can turn the power on and off, input the model of the nail gun 11, and input the target pressure of the accumulator chamber 17.
着脱検出センサ70は、圧縮機12の第1装着部66が、釘打ち機11の装着部30に装着されているか否かを検出して信号を出力する。接続状態検出センサ100は、例えば、接続具65に設けられている。接続状態検出センサ100は、接続具65とホルダ38との接続状態が正常であるか否かを検出して信号を出力する。電流値検出回路73は、ハウジング58内に設けられている。 The attachment / detachment detection sensor 70 detects whether or not the first mounting portion 66 of the compressor 12 is mounted on the mounting portion 30 of the nail gun 11 and outputs a signal. The connection state detection sensor 100 is provided on, for example, the connector 65. The connection state detection sensor 100 detects whether or not the connection state between the connector 65 and the holder 38 is normal, and outputs a signal. The current value detection circuit 73 is provided in the housing 58.
電流値検出回路73は、電池パック13から電動モータ59に供給される電流値を検出して信号を出力する。位相検出センサ72は、モータ軸80の回転方向の位置を検出して信号を出力する。圧力検出センサ69は、例えば、図6のように排気管85に設けられている。圧力検出センサ69は、通路86の空気圧を検出して信号を出力する。圧力検出センサ69としては、例えば、歪ゲージを用いることができる。機種検出センサ71は、例えば第1装着部66に設けられている。機種検出センサ71は、釘打ち機11の機種を検出して信号を出力する。 The current value detection circuit 73 detects the current value supplied from the battery pack 13 to the electric motor 59 and outputs a signal. The phase detection sensor 72 detects the position of the motor shaft 80 in the rotational direction and outputs a signal. The pressure detection sensor 69 is provided in the exhaust pipe 85, for example, as shown in FIG. The pressure detection sensor 69 detects the air pressure in the passage 86 and outputs a signal. As the pressure detection sensor 69, for example, a strain gauge can be used. The model detection sensor 71 is provided, for example, in the first mounting portion 66. The model detection sensor 71 detects the model of the nail gun 11 and outputs a signal.
制御回路63は、図5のようにハウジング58に設けられている。制御回路63は、入力ポート、出力ポート、中央演算処理装置及び記憶部63Aを有するマイクロコンピュータである。記憶部63Aは、ROM(Read Only Memory)及びRAM(Random Access Memory)を有する。制御回路63は、各種センサの信号を処理し、かつ、ディスプレイ68の操作によって入力される情報を処理する。 The control circuit 63 is provided in the housing 58 as shown in FIG. The control circuit 63 is a microcomputer having an input port, an output port, a central processing unit, and a storage unit 63A. The storage unit 63A has a ROM (Read Only Memory) and a RAM (Random Access Memory). The control circuit 63 processes signals from various sensors and processes information input by operating the display 68.
制御回路63は、釘打ち機11の機種を判別可能である。制御回路63が釘打ち機11の機種を判別する例は、ユーザがディスプレイ68を操作して入力する機種情報の他、次のようなものがある。釘打ち機11の装着部30に識別部が設けられ、機種検出センサ71が識別部に応じた信号を出力する。識別部の一例は、機種に対応したバーコードを有するラべル、機種に対応した装着部30の形状、機種に対応したホルダ38の形状等である。また、釘打ち機11の制御回路25が、予め機種を記憶していてもよい。圧縮機12の制御回路63と、釘打ち機11の制御回路25との間で通信し、圧縮機12の制御回路63が釘打ち機11の機種を判別する。 The control circuit 63 can identify the model of the nail gun 11. Examples of the control circuit 63 for determining the model of the nail gun 11 include the following, in addition to the model information input by the user by operating the display 68. An identification unit is provided in the mounting unit 30 of the nail gun 11, and the model detection sensor 71 outputs a signal corresponding to the identification unit. Examples of the identification unit include a label having a barcode corresponding to the model, a shape of the mounting portion 30 corresponding to the model, a shape of the holder 38 corresponding to the model, and the like. Further, the control circuit 25 of the nail gun 11 may store the model in advance. Communication is performed between the control circuit 63 of the compressor 12 and the control circuit 25 of the nail gun 11, and the control circuit 63 of the compressor 12 determines the model of the nail gun 11.
圧縮機12の第1装着部66と、釘打ち機11の装着部30とを、中心線A3に沿った方向に移動させて、ガイド部96とガイド部50とを係合させると、第1装着部66が装着部30に取り付けられる。つまり、ユーザは、1回の操作で圧縮機12の第1装着部66と、釘打ち機11の装着部30とを接続可能である。第1装着部66が装着部30に取り付けられると、端子97と端子51とが電気的に接続される。端子97の電力端子と通信端子は、それぞれ端子51の電力端子と通信端子と電気的に接続される。このため、電力線97Aと電力線51Aとが接続され、かつ、電力線97Bと電力線51Bとが接続され、かつ、通信線97Cと通信線51Cとが接続される。つまり、第1装着部66は、制御回路63と制御回路25との間における電力の供給と信号の送受信を可能とする。また、第1装着部66は、電池パック13の電力を釘打ち機11に供給可能とする。 When the first mounting portion 66 of the compressor 12 and the mounting portion 30 of the nail gun 11 are moved in the direction along the center line A3 to engage the guide portion 96 and the guide portion 50, the first The mounting portion 66 is mounted on the mounting portion 30. That is, the user can connect the first mounting portion 66 of the compressor 12 and the mounting portion 30 of the nail gun 11 with one operation. When the first mounting portion 66 is mounted on the mounting portion 30, the terminal 97 and the terminal 51 are electrically connected. The power terminal and the communication terminal of the terminal 97 are electrically connected to the power terminal and the communication terminal of the terminal 51, respectively. Therefore, the power line 97A and the power line 51A are connected, the power line 97B and the power line 51B are connected, and the communication line 97C and the communication line 51C are connected. That is, the first mounting unit 66 enables power supply and signal transmission / reception between the control circuit 63 and the control circuit 25. Further, the first mounting unit 66 makes it possible to supply the electric power of the battery pack 13 to the nail gun 11.
また、第1装着部66が装着部30に取り付けられると、差し込み部90が支持孔38Aに進入し、図5及び図6のように、差し込み部90がホルダ38に接続される。差し込み部90がホルダ38に接続されると、接触子90Aがプランジャ19Aに外力を付加し、充填バルブ19は、通路104と通路88とを接続する。 Further, when the first mounting portion 66 is mounted on the mounting portion 30, the insertion portion 90 enters the support hole 38A, and the insertion portion 90 is connected to the holder 38 as shown in FIGS. 5 and 6. When the insertion portion 90 is connected to the holder 38, the contact 90A applies an external force to the plunger 19A, and the filling valve 19 connects the passage 104 and the passage 88.
これに対して、第1装着部66と装着部30とを、中心線A3に沿った方向に移動させて、ガイド部96とガイド部50とを解放させると、第1装着部66を装着部30から取り外すことが可能である。つまり、ユーザは、1回の操作で圧縮機12を釘打ち機11から取り外すことができる。第1装着部66が装着部30から取り外されると、端子97と端子51とが電気的に遮断される。また、第1装着部66が装着部30から取り外されると、差し込み部90がホルダ38から取り外される。差し込み部90がホルダ38から取り外されると、プランジャ19Aに対する外力が解除され、充填バルブ19が通路104と通路88とを遮断し、かつ、通路104と外部C1とを遮断する。 On the other hand, when the first mounting portion 66 and the mounting portion 30 are moved in the direction along the center line A3 to release the guide portion 96 and the guide portion 50, the first mounting portion 66 is mounted. It can be removed from 30. That is, the user can remove the compressor 12 from the nail gun 11 with one operation. When the first mounting portion 66 is removed from the mounting portion 30, the terminal 97 and the terminal 51 are electrically cut off. Further, when the first mounting portion 66 is removed from the mounting portion 30, the insertion portion 90 is removed from the holder 38. When the insertion portion 90 is removed from the holder 38, the external force on the plunger 19A is released, and the filling valve 19 cuts off the passage 104 and the passage 88, and also cuts off the passage 104 and the external C1.
さらに、電池パック13の装着部56と、圧縮機12の第2装着部67とを移動させることにより、ガイド部98とガイド部54とが係合されると、装着部56が第2装着部67に取り付けられる。装着部56が第2装着部67に取り付けられると、端子55と端子99とが電気的に接続される。つまり、端子55の電力端子と、端子99の電力端子とが電気的に接続され、端子55の通信端子と、端子99の通信端子とが、電気的に接続される。装着部56と第2装着部67とを移動させることにより、ガイド部98とガイド部54とが解放されると、装着部56が第2装着部67から取り外される。装着部56が第2装着部67から取り外されると、端子55と端子99とが電気的に遮断される。 Further, by moving the mounting portion 56 of the battery pack 13 and the second mounting portion 67 of the compressor 12, when the guide portion 98 and the guide portion 54 are engaged with each other, the mounting portion 56 becomes the second mounting portion. Attached to 67. When the mounting portion 56 is mounted on the second mounting portion 67, the terminal 55 and the terminal 99 are electrically connected. That is, the power terminal of the terminal 55 and the power terminal of the terminal 99 are electrically connected, and the communication terminal of the terminal 55 and the communication terminal of the terminal 99 are electrically connected. When the guide portion 98 and the guide portion 54 are released by moving the mounting portion 56 and the second mounting portion 67, the mounting portion 56 is removed from the second mounting portion 67. When the mounting portion 56 is removed from the second mounting portion 67, the terminals 55 and 99 are electrically cut off.
さらにまた、電池パック13の装着部56と、釘打ち機11の装着部30とを中心線A3に沿った方向に移動させることにより、ガイド部54とガイド部50とを係合させると、図3のように、装着部56が装着部30に取り付けられる。装着部56が装着部30に取り付けられると、端子55と端子51とが電気的に接続される。端子55の電力端子と、端子51の電力端子とが電気的に接続され、端子55の通信端子と、端子51の通信端子とが電気的に接続される。 Furthermore, by moving the mounting portion 56 of the battery pack 13 and the mounting portion 30 of the nail gun 11 in the direction along the center line A3, the guide portion 54 and the guide portion 50 are engaged with each other. As in 3, the mounting portion 56 is attached to the mounting portion 30. When the mounting portion 56 is attached to the mounting portion 30, the terminal 55 and the terminal 51 are electrically connected. The power terminal of the terminal 55 and the power terminal of the terminal 51 are electrically connected, and the communication terminal of the terminal 55 and the communication terminal of the terminal 51 are electrically connected.
これに対して、装着部56と装着部30とを中心線A3に沿った方向に移動させることにより、ガイド部54とガイド部50とを解放させると、装着部56が装着部30から取り外される。装着部56が装着部30から取り外されると、端子55と端子51とが電気的に遮断される。 On the other hand, when the guide portion 54 and the guide portion 50 are released by moving the mounting portion 56 and the mounting portion 30 in the direction along the center line A3, the mounting portion 56 is removed from the mounting portion 30. .. When the mounting portion 56 is removed from the mounting portion 30, the terminals 55 and 51 are electrically cut off.
ユーザが蓄圧室17に圧縮空気を充填する作業は、図1のように、圧縮機12が釘打ち機11に取り付けられ、かつ、電池パック13が圧縮機12に取り付けられた状態で行われる。蓄圧室17に圧縮空気を充填する制御の概要は、次のようなものである。制御回路63は、目標圧力が蓄圧室17の実際の圧力より高い場合に、圧縮空気を蓄圧室17へ供給する制御を行う。制御回路63は、圧縮空気を蓄圧室17へ供給する前に、打撃部16を待機位置から上昇させ、かつ、下死点で停止させる。制御回路63は、釘打ち機11の機種に応じて目標圧力を設定可能である。 The operation of filling the accumulator chamber 17 with compressed air by the user is performed in a state where the compressor 12 is attached to the nail gun 11 and the battery pack 13 is attached to the compressor 12, as shown in FIG. The outline of the control for filling the accumulator chamber 17 with compressed air is as follows. The control circuit 63 controls to supply compressed air to the accumulator chamber 17 when the target pressure is higher than the actual pressure of the accumulator chamber 17. The control circuit 63 raises the striking portion 16 from the standby position and stops it at the bottom dead center before supplying the compressed air to the accumulator chamber 17. The control circuit 63 can set the target pressure according to the model of the nail gun 11.
ユーザが、本実施形態の圧縮機12を使用して、釘打ち機11の蓄圧室17の初期圧力を調整する例を、図8の制御例を参照して説明する。ユーザは、電池パック13の装着部56を圧縮機12の第2装着部67に取り付ける。そして、ユーザがオンスイッチを操作すると、電池パック13から制御回路63に電力が供給され、制御回路63が起動される。 An example in which the user adjusts the initial pressure of the accumulator chamber 17 of the nail gun 11 by using the compressor 12 of the present embodiment will be described with reference to the control example of FIG. The user attaches the mounting portion 56 of the battery pack 13 to the second mounting portion 67 of the compressor 12. Then, when the user operates the on switch, electric power is supplied from the battery pack 13 to the control circuit 63, and the control circuit 63 is activated.
起動された制御回路63は、図8の制御例をスタートさせる。制御回路63は、ステップS10において、圧縮機12の第1装着部66が、釘打ち機11の装着部30に接続されているか否かを判断する。制御回路63は、ステップS10でNoと判断すると、ステップS11において、ディスプレイ68で“圧縮機を釘打ち機に接続してください”と表示させ、ステップS10に戻る。 The activated control circuit 63 starts the control example of FIG. In step S10, the control circuit 63 determines whether or not the first mounting portion 66 of the compressor 12 is connected to the mounting portion 30 of the nail gun 11. If the control circuit 63 determines No in step S10, the display 68 displays "Please connect the compressor to the nail gun" in step S11, and returns to step S10.
制御回路63は、ステップS10でYesと判断すると、ステップS12において、釘打ち機11の機種を判別し、かつ、釘打ち機11の使用履歴を読み取る。制御回路63は、機種検出センサ71の信号を処理するか、または、ディスプレイ68に入力された機種情報を処理することにより、釘打ち機11の機種を判別可能である。釘打ち機11の使用履歴は、例えば、マガジン24に収容されている釘47の数、釘47が射出路23Aで詰まっているか否か、シール不良による蓄圧室17の空気漏れ等である。例えば、シール部材101の摩耗が進捗すると、シール不良が発生する。 When the control circuit 63 determines Yes in step S10, the control circuit 63 determines the model of the nail gun 11 and reads the usage history of the nail gun 11 in step S12. The control circuit 63 can determine the model of the nail gun 11 by processing the signal of the model detection sensor 71 or processing the model information input to the display 68. The usage history of the nail gun 11 is, for example, the number of nails 47 housed in the magazine 24, whether or not the nails 47 are clogged in the injection path 23A, air leakage in the pressure accumulator chamber 17 due to a defective seal, and the like. For example, if the wear of the seal member 101 progresses, a seal defect occurs.
制御回路63は、打撃部16が待機位置または下死点とは異なる位置で停止していると、釘47が射出路23Aで詰まっていると判断する。また、制御回路63は、釘47の打ち込み本数と蓄圧室17の実際の圧力との関係から、シール不良による蓄圧室17の空気漏れを検出可能である。釘47の打ち込み本数と、蓄圧室17の実際の圧力との関係を示す情報は、制御回路63の記憶部63Aに記憶されている。 The control circuit 63 determines that the nail 47 is clogged with the injection path 23A when the striking portion 16 is stopped at a position different from the standby position or the bottom dead center. Further, the control circuit 63 can detect an air leak in the accumulator chamber 17 due to a defective seal from the relationship between the number of nails driven and the actual pressure in the accumulator chamber 17. Information indicating the relationship between the number of nails 47 driven and the actual pressure of the accumulator chamber 17 is stored in the storage unit 63A of the control circuit 63.
制御回路63は、ステップS13において、釘打ち機11の状態が、圧縮空気を蓄圧室17へ供給可能な状態であるか否かを判断する。制御回路63は、マガジン24に釘47が残っていないこと、釘47が射出路23Aで詰まっていないこと、シール不良による蓄圧室17の空気漏れがないこと、接続具65とホルダ38とが正常に接続されていること、の4つの条件が全て成立すると、ステップS13でYesと判断する。 In step S13, the control circuit 63 determines whether or not the state of the nail gun 11 is a state in which compressed air can be supplied to the accumulator chamber 17. In the control circuit 63, the nail 47 does not remain in the magazine 24, the nail 47 is not clogged with the injection path 23A, there is no air leakage in the accumulator chamber 17 due to a defective seal, and the fitting 65 and the holder 38 are normal. When all four conditions of being connected to are satisfied, it is determined as Yes in step S13.
制御回路63は、ステップS13でYesと判断すると、ステップS14で蓄圧室17の目標圧力を設定する。制御回路63は、釘打ち機11の機種、または、ユーザがディスプレイ68を操作して入力した情報に基づいて、蓄圧室17の目標圧力を設定する。制御回路63は、ステップS14に次ぐステップS15において、蓄圧室17の実際の圧力を検出する。制御回路63は、ステップS16において、“目標圧力は蓄圧室の実際の空気圧より高いか”を判断する。 When the control circuit 63 determines Yes in step S13, the control circuit 63 sets the target pressure of the accumulator chamber 17 in step S14. The control circuit 63 sets the target pressure of the accumulator chamber 17 based on the model of the nail gun 11 or the information input by the user by operating the display 68. The control circuit 63 detects the actual pressure in the accumulator chamber 17 in step S15 following step S14. In step S16, the control circuit 63 determines "whether the target pressure is higher than the actual air pressure in the accumulator chamber".
制御回路63は、ステップS16でYesと判断すると、ステップS17において、圧縮空気を蓄圧室17に供給する制御を行う。制御回路63がステップS17で行う制御は、第1制御及び第2制御を含む。第1制御は、電動モータ20を回転させることにより、待機位置で停止されている打撃部16を上死点へ上昇させた後、打撃部16を上死点から下死点へ作動させ、かつ、打撃部16を下死点で停止させることである。 If the control circuit 63 determines Yes in step S16, the control circuit 63 controls to supply compressed air to the accumulator chamber 17 in step S17. The control performed by the control circuit 63 in step S17 includes a first control and a second control. In the first control, the striking portion 16 stopped at the standby position is raised to the top dead center by rotating the electric motor 20, and then the striking portion 16 is operated from the top dead center to the bottom dead center. , The striking portion 16 is stopped at the bottom dead center.
第2制御は、電動モータ59を回転させて圧縮部62を駆動させ、圧縮室84から吐出された圧縮空気を、通路86、通路88及び通路104を経由させて蓄圧室17に供給することである。制御回路63は、インバータ回路61を制御して、ステータ79のコイルに供給される電流値を調整することにより、電動モータ59のモータ軸80の単位時間当たりの回転数、つまり、回転速度、モータ軸80の回転力を制御する。 The second control is to rotate the electric motor 59 to drive the compression unit 62, and supply the compressed air discharged from the compression chamber 84 to the accumulator chamber 17 via the passage 86, the passage 88, and the passage 104. be. The control circuit 63 controls the inverter circuit 61 to adjust the current value supplied to the coil of the stator 79, thereby adjusting the rotation speed of the motor shaft 80 of the electric motor 59, that is, the rotation speed and the motor. The rotational force of the shaft 80 is controlled.
ここで、第1制御が行われた後、ユーザによる開始スイッチの操作無しに、制御回路63が第2制御を行う第1選択肢と、第1制御が行われた後、ユーザが開始スイッチを操作してから制御回路63が第2制御を行う第2選択肢と、がある。ユーザは、ディスプレイ68を操作して、第1選択肢と第2選択肢とを、予め決定しておくことが可能である。 Here, after the first control is performed, the control circuit 63 performs the second control without the user operating the start switch, and after the first control is performed, the user operates the start switch. Then, there is a second option in which the control circuit 63 performs the second control. The user can operate the display 68 to determine the first option and the second option in advance.
制御回路63が、図8の制御例を行うと、マガジン24に釘47が無く、かつ、釘47が射出路23Aに詰まっていない場合に、打撃部16が上死点から下降されるため、打撃部16が釘47を打撃することは無い。そして、打撃部16が下死点で停止されている状態で、圧縮機12から蓄圧室17に圧縮空気が供給される。 When the control circuit 63 performs the control example of FIG. 8, when the magazine 24 does not have the nail 47 and the nail 47 is not clogged in the injection path 23A, the striking portion 16 is lowered from the top dead center. The striking portion 16 does not strik the nail 47. Then, compressed air is supplied from the compressor 12 to the accumulator chamber 17 in a state where the striking portion 16 is stopped at the bottom dead center.
制御回路63は、ステップS18において、“目標圧力と蓄圧室17の実際の圧力とが等しいか”を判断する。“目標圧力と蓄圧室17の実際の圧力とが等しい”は、“目標圧力と蓄圧室17の実際の圧力とが完全に一致”または“蓄圧室17の実際の圧力が目標圧力の近傍”の何れでもよい。つまり、“目標圧力と蓄圧室17の実際の圧力とが等しい”は、目標圧力と蓄圧室17の実際の圧力とが完全に一致、及び目標圧力と蓄圧室17の実際の圧力とが略一致の何れでもよい。蓄圧室17の実際の圧力は、温度条件によって変化するため、このような制御が行われる。制御回路63は、ステップS17,S18において、蓄圧室17の実際の圧力を目標圧力に近づけるように、フィードバック制御を行う。 In step S18, the control circuit 63 determines "whether the target pressure and the actual pressure of the accumulator chamber 17 are equal to each other". "The target pressure is equal to the actual pressure of the accumulator chamber 17" means "the target pressure and the actual pressure of the accumulator chamber 17 are exactly the same" or "the actual pressure of the accumulator chamber 17 is near the target pressure". Either may be used. That is, "the target pressure and the actual pressure of the accumulator chamber 17 are equal" means that the target pressure and the actual pressure of the accumulator chamber 17 are completely the same, and the target pressure and the actual pressure of the accumulator chamber 17 are substantially the same. Any of them may be used. Since the actual pressure of the accumulator chamber 17 changes depending on the temperature condition, such control is performed. The control circuit 63 performs feedback control in steps S17 and S18 so that the actual pressure of the accumulator chamber 17 approaches the target pressure.
制御回路63は、ステップS18でNoと判断すると、ステップS17に進んで第2制御を継続する。制御回路63は、ステップS18でYesと判断すると、ステップS19で電動モータ59を停止させることにより、蓄圧室17に対する圧縮空気の供給を終了し、かつ、ディスプレイ68で“圧縮空気の充填終了”を表示させ、図8の制御例を終了する。 If the control circuit 63 determines No in step S18, the control circuit 63 proceeds to step S17 to continue the second control. When the control circuit 63 determines Yes in step S18, the electric motor 59 is stopped in step S19 to end the supply of compressed air to the accumulator chamber 17, and the display 68 displays "compressed air filling end". The display is displayed, and the control example of FIG. 8 ends.
制御回路63は、ステップS16でNoと判断すると、ステップS20において、ディスプレイ68で“蓄圧室の圧縮空気を外部に排気”と表示させ、ステップS15に進む。ユーザは、ディスプレイ68に表示された“蓄圧室の圧縮空気を外部に排気”を目視すると、排気弁89の軸部93に操作力を付加する。すると、排気弁89が通路88と外部C1とを接続する。したがって、蓄圧室17の圧縮空気は、通路104、通路88及び排気通路92を通って外部C1へ排出され、蓄圧室17の実際の圧力が低下する。 If the control circuit 63 determines No in step S16, the display 68 displays "exhaust the compressed air in the accumulator chamber to the outside" in step S20, and the process proceeds to step S15. When the user visually observes "exhaust the compressed air in the accumulator chamber to the outside" displayed on the display 68, an operating force is applied to the shaft portion 93 of the exhaust valve 89. Then, the exhaust valve 89 connects the passage 88 and the external C1. Therefore, the compressed air in the accumulator chamber 17 is discharged to the outside C1 through the passage 104, the passage 88, and the exhaust passage 92, and the actual pressure in the accumulator chamber 17 decreases.
さらに、制御回路63は、ステップS13の判断時点において、シール不良による蓄圧室17の空気漏れがある場合、マガジン24に釘47が残っている場合、釘47が射出路23Aで詰まっている場合の何れにおいても、ステップS13でNoと判断する。シール不良による蓄圧室17の空気漏れがある場合、制御回路63は、ステップS13でNoと判断する。マガジン24に釘47が残っている場合、または、釘47が射出路23Aで詰まっている場合に、打撃部16を上死点から下降させると打撃部16が釘47を打撃するため、制御回路63は、ステップS13でNoと判断する。 Further, in the control circuit 63, at the time of determination in step S13, when there is an air leak in the accumulator chamber 17 due to a sealing defect, when the nail 47 remains in the magazine 24, or when the nail 47 is clogged with the injection path 23A. In either case, it is determined as No in step S13. If there is an air leak in the accumulator chamber 17 due to a defective seal, the control circuit 63 determines No in step S13. When the nail 47 remains in the magazine 24, or when the nail 47 is clogged with the injection path 23A, when the striking portion 16 is lowered from the top dead center, the striking portion 16 strikes the nail 47, so that the control circuit 63 is determined to be No in step S13.
制御回路63は、ステップS13でNoと判断すると、ステップS21に進んで蓄圧室17に対する圧縮空気の供給を禁止し、かつ、ディスプレイ68で“メンテナンス”と表示させ、図8の制御例を終了する。具体的にはディスプレイ68で、“マガジンから釘を取り出してください”、“釘が射出部で詰まっています”、“シール部材を交換してください”、“接続具とホルダとの接続状態を確認してください”等である。 If the control circuit 63 determines No in step S13, the control circuit 63 proceeds to step S21 to prohibit the supply of compressed air to the accumulator chamber 17, displays "maintenance" on the display 68, and ends the control example of FIG. .. Specifically, on the display 68, "Please remove the nail from the magazine", "The nail is clogged at the injection part", "Replace the seal member", "Check the connection status between the connector and the holder". Please do it. "
ユーザは、“メンテナンス”の表示を確認すると、マガジン24から釘47を取り出す作業、または、射出路23Aに詰まっている釘47を除去する作業、シール部材101を交換する作業、接続具65とホルダ38との接続状態を正常にする作業等を行う。なお、制御回路63は、ディスプレイ68で“メンテナンス”に代えて“エラー”と表示させてもよい。 When the user confirms the display of "maintenance", the user takes out the nail 47 from the magazine 24, removes the nail 47 stuck in the injection path 23A, replaces the seal member 101, and connects the fitting 65 and the holder. Work to normalize the connection state with 38 and the like. The control circuit 63 may display "error" instead of "maintenance" on the display 68.
本実施形態の圧縮機12を用いると、ユーザは、釘打ち機11を外部機関、例えば、メーカーまたは修理業者等に出すことなく、ユーザ自らが装着部30に圧縮機12の第1装着部66を取り付けることにより、蓄圧室17に圧縮空気を充填可能である。したがって、ユーザが釘打ち機11を使用できない期間を短縮可能である。また、図3に示すように、釘打ち機11の装着部30に、直接、電池パック13を取り付け及び取り外すことも可能である。このため、圧縮機12に変圧器を設けずに済む。 When the compressor 12 of the present embodiment is used, the user himself / herself does not send the nail gun 11 to an external organization such as a manufacturer or a repair company, and the user himself / herself attaches the first mounting portion 66 of the compressor 12 to the mounting portion 30. The accumulator chamber 17 can be filled with compressed air by attaching the above. Therefore, it is possible to shorten the period during which the user cannot use the nail gun 11. Further, as shown in FIG. 3, it is also possible to directly attach and detach the battery pack 13 to the mounting portion 30 of the nail gun 11. Therefore, it is not necessary to provide a transformer in the compressor 12.
[補足説明]本実施形態で開示された事項の技術的意味の一例は、次の通りである。圧縮機12を釘打ち機11に取り付けは、圧縮機12を釘打ち機11に接続、と定義可能である。圧縮機12を釘打ち機11に取り付け及び取り外しは、圧縮機12を釘打ち機11に着脱、と定義可能である。電池パック13を圧縮機12に取り付け、電池パック13を圧縮機12に接続、と定義可能である。電池パック13を圧縮機12に取り付け及び取り外しは、電池パック13を圧縮機12に着脱、と定義可能である。 [Supplemental Information] An example of the technical meaning of the matters disclosed in the present embodiment is as follows. Attaching the compressor 12 to the nail gun 11 can be defined as connecting the compressor 12 to the nail gun 11. Attaching and detaching the compressor 12 to and from the nail gun 11 can be defined as attaching and detaching the compressor 12 to and from the nail gun 11. It can be defined that the battery pack 13 is attached to the compressor 12 and the battery pack 13 is connected to the compressor 12. Attaching and detaching the battery pack 13 to the compressor 12 can be defined as attaching and detaching the battery pack 13 to and from the compressor 12.
圧縮機12は、圧縮機の一例である。釘打ち機11は、工具の一例である。気体圧縮部102は、気体圧縮部の一例である。圧縮空気は、圧縮気体の一例である。蓄圧室17を有する蓄圧容器37は、蓄圧部の一例である。排気管85及び接続具65は、気体供給部の一例である。制御回路63は、制御回路の一例である。圧力検出センサ69は、圧力測定部の一例である。 The compressor 12 is an example of a compressor. The nail gun 11 is an example of a tool. The gas compression unit 102 is an example of the gas compression unit. Compressed air is an example of compressed gas. The accumulator container 37 having the accumulator chamber 17 is an example of the accumulator unit. The exhaust pipe 85 and the fitting 65 are examples of the gas supply unit. The control circuit 63 is an example of a control circuit. The pressure detection sensor 69 is an example of a pressure measuring unit.
記憶部63Aは、記憶部の一例である。排気弁89は、排出機構の一例である。第1装着部66は、第1装着部の一例である。第2装着部67は、第2装着部の一例である。電池パック13は、電源の一例である。ガイド部96は、接続機構の一例である。ディスプレイ68は、表示部の一例である。制御回路25、インバータ回路103及び電動モータ20は、駆動部の一例である。駆動部は、打撃部を第2方向に作動させることにより、蓄圧室の圧力を上昇させる機構である。打撃部16は、打撃部の一例である。釘残量検出センサ43及び制御回路25は、残量検出部の一例である。釘47は、止具の一例である。 The storage unit 63A is an example of a storage unit. The exhaust valve 89 is an example of an exhaust mechanism. The first mounting portion 66 is an example of the first mounting portion. The second mounting portion 67 is an example of the second mounting portion. The battery pack 13 is an example of a power source. The guide unit 96 is an example of a connection mechanism. The display 68 is an example of a display unit. The control circuit 25, the inverter circuit 103, and the electric motor 20 are examples of the drive unit. The drive unit is a mechanism for increasing the pressure in the accumulator chamber by operating the striking unit in the second direction. The striking portion 16 is an example of a striking portion. The nail remaining amount detection sensor 43 and the control circuit 25 are examples of the remaining amount detecting unit. The nail 47 is an example of a stopper.
制御回路63が、ステップS17で行う第2制御が、“蓄圧室の気体圧力を上昇させる制御”に相当する。制御回路63が、ステップS19で行う制御が、“気体圧縮部を停止させる制御”に相当する。“制御回路63が制御回路25を制御、“制御回路63が、制御回路25を介してインバータ回路103及び電動モータ20を間接的に制御”が、“制御回路は、駆動部を制御”の一例である。制御回路63が、ステップS17,S18,19で行う電動モータ59のモータ軸80の回転及び停止、回転数、回転速度及び回転力の制御が、“目標圧力に基づいて気体圧縮部を制御”の一例である。 The second control performed by the control circuit 63 in step S17 corresponds to "control to increase the gas pressure in the accumulator chamber". The control performed by the control circuit 63 in step S19 corresponds to "control to stop the gas compression unit". An example of "the control circuit 63 controls the control circuit 25," the control circuit 63 indirectly controls the inverter circuit 103 and the electric motor 20 via the control circuit 25 ", but" the control circuit controls the drive unit ". The control circuit 63 controls the rotation and stop of the motor shaft 80 of the electric motor 59, the rotation speed, the rotation speed, and the rotational force, which are performed in steps S17, S18, and 19, "to control the gas compression unit based on the target pressure." This is an example of "control".
制御回路63は、ステップS17で行う第1制御において、打撃部16を上死点から下死点へ作動させ、かつ、打撃部16を下死点で停止させるよう制御したが、この制御を省略しても良い。すなわち、ステップS17では、打撃部16は待機位置で停止させたまま、第2制御を実行しても良い。この場合、制御回路63は、電動モータ20を駆動させる必要が無いため、回路の構成を簡略化することができる。また、その場合、釘打ち機11から釘残量検出センサ43を削除することができる。なお、第1制御を省略する場合、第1制御を行った場合と比較して、釘打ち機11の機種に応じた蓄圧室17の目標圧力は高く設定される。 In the first control performed in step S17, the control circuit 63 controls the striking unit 16 to operate from the top dead center to the bottom dead center and to stop the striking unit 16 at the bottom dead center, but this control is omitted. You may. That is, in step S17, the second control may be executed while the striking portion 16 is stopped at the standby position. In this case, since the control circuit 63 does not need to drive the electric motor 20, the circuit configuration can be simplified. In that case, the nail remaining amount detection sensor 43 can be deleted from the nail gun 11. When the first control is omitted, the target pressure of the accumulator chamber 17 according to the model of the nail gun 11 is set higher than that when the first control is performed.
釘打ち機11の機種は、工具の種類の一例である。射出路23Aにおける釘47の詰まりの有無、マガジン24における釘47の残数、蓄圧室17の実際の圧力、蓄圧室17の空気漏れ等が、工具の状態の一例である。ディスプレイ68で表示される“マガジンから釘を取り出してください”、“釘が射出部で詰まっています”、“シール部材を交換してください”、“接続具とホルダとの接続状態を確認してください”等の情報が、メンテナンス情報の一例である。“ディスプレイ68から入力される釘打ち機11の機種情報”及び“機種検出センサ71の信号から得られる釘打ち機11の機種情報”が、“工具の種類に応じた識別情報”の一例である。 The model of the nail gun 11 is an example of a type of tool. The presence or absence of clogging of the nail 47 in the injection path 23A, the remaining number of nails 47 in the magazine 24, the actual pressure in the accumulator chamber 17, the air leakage in the accumulator chamber 17, and the like are examples of the state of the tool. "Remove the nail from the magazine", "The nail is clogged at the injection part", "Replace the seal member", "Check the connection status between the connector and the holder" displayed on the display 68. Information such as "Please" is an example of maintenance information. "Model information of the nail gun 11 input from the display 68" and "model information of the nail gun 11 obtained from the signal of the model detection sensor 71" are examples of "identification information according to the type of tool". ..
排気弁89は、軸部93をユーザが手動で操作するものに代えて、軸部93の作動を制御回路63が制御するソレノイドバルブであってもよい。この場合、軸部93は、磁性材料、例えば、鉄製である。また、コイルがボディ91に設けられる。そして、図7に示す制御回路63が、排気弁89のコイルに対する電力の供給及び停止を制御する。排気弁89に対する電力の供給が停止されていると、シール部材95がボディ91に押し付けられて軸部93が停止し、排気通路92と外部C1とが遮断される。排気弁89のコイルに電力が供給されると、磁気吸引力が形成され、軸部93がスプリング94の付勢力に抗して作動し、排気通路92と外部C1とが接続される。 The exhaust valve 89 may be a solenoid valve in which the control circuit 63 controls the operation of the shaft portion 93 instead of the one in which the shaft portion 93 is manually operated by the user. In this case, the shaft portion 93 is made of a magnetic material, for example, iron. Further, a coil is provided on the body 91. Then, the control circuit 63 shown in FIG. 7 controls the supply and stop of electric power to the coil of the exhaust valve 89. When the supply of electric power to the exhaust valve 89 is stopped, the seal member 95 is pressed against the body 91, the shaft portion 93 is stopped, and the exhaust passage 92 and the external C1 are cut off. When electric power is supplied to the coil of the exhaust valve 89, a magnetic attraction force is formed, the shaft portion 93 operates against the urging force of the spring 94, and the exhaust passage 92 and the external C1 are connected to each other.
そして、図8の制御例におけるステップS20以外の処理において、制御回路63は、排気弁89のコイルに対する電力の供給を停止し、排気通路92と外部C1とを遮断させる。制御回路63は、ステップS20において、排気弁89に対して電力を供給し、排気通路92と外部C1とを接続させる。したがって、制御回路63が行うステップS20の処理において、蓄圧室17の圧縮空気が、排気通路92から外部C1へ排出される。 Then, in the process other than step S20 in the control example of FIG. 8, the control circuit 63 stops the supply of electric power to the coil of the exhaust valve 89 and shuts off the exhaust passage 92 and the external C1. In step S20, the control circuit 63 supplies electric power to the exhaust valve 89 to connect the exhaust passage 92 and the external C1. Therefore, in the process of step S20 performed by the control circuit 63, the compressed air in the accumulator chamber 17 is discharged from the exhaust passage 92 to the outside C1.
蓄圧室17の実際の圧力を検出する圧力検出センサは、釘打ち機11の蓄圧容器37または空気管18に設けられていてもよい。圧縮機12の制御回路63と、釘打ち機11の制御回路25との通信は、信号線によって行ってもよいし、無線によって行ってもよい。圧縮機12の制御回路63と、釘打ち機11の制御回路25との通信を無線で行う場合、圧縮機12及び釘打ち機11は、それぞれ発信機及び受信機を有する。また、無線通信としてBluetooth(登録商標)を利用することも可能である。 The pressure detection sensor for detecting the actual pressure in the pressure accumulator chamber 17 may be provided in the accumulator container 37 or the air pipe 18 of the nail gun 11. Communication between the control circuit 63 of the compressor 12 and the control circuit 25 of the nail gun 11 may be performed by a signal line or wirelessly. When the control circuit 63 of the compressor 12 and the control circuit 25 of the nail gun 11 communicate wirelessly, the compressor 12 and the nail gun 11 have a transmitter and a receiver, respectively. It is also possible to use Bluetooth (registered trademark) for wireless communication.
本実施形態で開示された工具システム、圧縮機及び工具は、上記実施形態に限定されるものではなく、その要旨を逸脱しない範囲で種々変更可能である。圧縮機及び工具に電力を供給する電源は、直流電源に代えて、交流電源であってもよい。さらに、圧縮機の第2装着部及び釘打ち機の装着部は、交流電源に接続されたアダプタを、取り付け及び取り外しすることも可能である。この場合、アダプタは、図2に示された電池パック13と同様の装着部56及びガイド部54を有する。 The tool system, compressor and tool disclosed in this embodiment are not limited to the above-described embodiment, and can be variously changed without departing from the gist thereof. The power source for supplying electric power to the compressor and the tool may be an AC power source instead of the DC power source. Further, the second mounting part of the compressor and the mounting part of the nail gun can attach and detach the adapter connected to the AC power supply. In this case, the adapter has a mounting portion 56 and a guide portion 54 similar to the battery pack 13 shown in FIG.
圧縮機の排気管と蓄圧容器とを接続する接続要素は、金属製の管の他、可撓性を有する合成ゴム製の管を含む。合成ゴム製の管は、例えば圧力ホースである。この場合、圧縮機の第1装着部と釘打ち機の装着部とを着脱する操作の他に、圧縮機の排気管と蓄圧容器とを、合成ゴム製の管で接続する操作を行う。 The connecting element connecting the exhaust pipe of the compressor and the accumulator container includes a metal pipe as well as a flexible synthetic rubber pipe. The synthetic rubber tube is, for example, a pressure hose. In this case, in addition to the operation of attaching and detaching the first mounting portion of the compressor and the mounting portion of the nail gun, an operation of connecting the exhaust pipe of the compressor and the accumulator container with a synthetic rubber pipe is performed.
工具は、釘打ち機に代えて、ステープラまたは鋲打ち機であってもよい。ステープラは、打撃部がアーチ形状の釘を打撃する。鋲打ち機は、打撃部が鋲を打撃する。制御回路は、電気部品または電子部品の単体でもよいし、複数の電気部品または複数の電子部品を有するユニットでもよい。圧縮気体は、空気に代えて、不活性ガスでもよい。不活性ガスは、例えば、窒素ガス、希ガスである。 The tool may be a stapler or a rivet instead of a nail gun. In the stapler, the striking part hits an arch-shaped nail. In the tacking machine, the striking part hits the tack. The control circuit may be a single electric component or an electronic component, or may be a unit having a plurality of electric components or a plurality of electronic components. The compressed gas may be an inert gas instead of air. The inert gas is, for example, nitrogen gas or noble gas.
本実施形態には、次のような工具も開示されている。 The following tools are also disclosed in this embodiment.
圧縮気体が充填される蓄圧室と、前記圧縮気体の圧力で第1方向に作動して止具を打撃する打撃部と、前記打撃部を前記第1方向とは逆の第2方向に作動させることにより、前記圧縮気体の圧力を上昇させる駆動部と、を有する工具。 The accumulator chamber filled with the compressed gas, the striking portion that operates in the first direction with the pressure of the compressed gas to strike the stopper, and the striking portion that operates in the second direction opposite to the first direction. Thereby, a tool having a drive unit for increasing the pressure of the compressed gas.
圧縮気体が充填される蓄圧室と、前記圧縮気体の圧力で第1方向に作動して止具を打撃する打撃部と、前記打撃部を前記第1方向とは逆の第2方向に作動させることにより、前記圧縮気体の圧力を上昇させる駆動部と、前記駆動部を制御する第1制御回路と、を有する工具。 The accumulator chamber filled with the compressed gas, the striking portion that operates in the first direction with the pressure of the compressed gas to strike the stopper, and the striking portion that operates in the second direction opposite to the first direction. Thereby, a tool having a drive unit for increasing the pressure of the compressed gas and a first control circuit for controlling the drive unit.
本実施形態には、次のような工具システムも開示されている。 The present embodiment also discloses the following tool system.
第1工具システムは、
工具と、
前記工具に取り付け及び取り外しが可能な圧縮機と、
を有する工具システムであって、
前記工具は、
圧縮気体が充填される蓄圧部と、
前記圧縮気体の圧力で第1方向に作動して止具を打撃する打撃部と、
前記打撃部を前記第1方向とは逆の第2方向に作動させることにより、前記圧縮気体の圧力を上昇させる駆動部と、
前記駆動部を制御する第1制御回路と、
を有し、
前記圧縮機は、
圧縮気体を生成する気体圧縮部と、
前記蓄圧部に接続可能であり、かつ、前記気体圧縮部で圧縮された前記圧縮気体を前記蓄圧部に供給可能な気体供給部と、
前記気体圧縮部を制御する第2制御回路と、
を有する、工具システム。
The first tool system is
With tools
A compressor that can be attached to and removed from the tool,
Is a tool system with
The tool is
The accumulator filled with compressed gas and
A striking portion that operates in the first direction with the pressure of the compressed gas to strike the stopper, and a striking portion.
A driving unit that raises the pressure of the compressed gas by operating the striking unit in a second direction opposite to the first direction.
The first control circuit that controls the drive unit and
Have,
The compressor
A gas compression unit that generates compressed gas, and
A gas supply unit that can be connected to the accumulator and can supply the compressed gas compressed by the gas compression unit to the accumulator.
The second control circuit that controls the gas compression unit and
Has a tool system.
第2工具システムは、前記第1工具システムにおける前記制御回路が、前記蓄圧部における前記圧縮気体の目標圧力を設定可能であり、かつ、前記目標圧力に基づいて前記気体圧縮部を制御する。 In the second tool system, the control circuit in the first tool system can set the target pressure of the compressed gas in the accumulator, and controls the gas compression unit based on the target pressure.
第3工具システムは、前記第1工具システムまたは前記第2工具システムにおいて、前記圧縮機に設けられ、かつ、前記第2制御回路及び前記気体圧縮部に電力を供給する電源を、更に備えている。 The third tool system further includes, in the first tool system or the second tool system, a power source provided in the compressor and supplying electric power to the second control circuit and the gas compression unit. ..
第4工具システムは、前記第3工具システムにおいて、前記電源は前記圧縮機に取り付け及び取り外しが可能である。 The fourth tool system is the third tool system, in which the power supply can be attached to and detached from the compressor.
10…工具システム、11…釘打ち機、12…圧縮機、13…電池パック、16…打撃部、17…蓄圧室、20…電動モータ、25,63…制御回路、37…蓄圧容器、43…釘残量検出センサ、47…釘、63A…記憶部、65…接続具、66…第1装着部、67…第2装着部、68…ディスプレイ、69…圧力検出センサ、85…排気管、89…排気弁、96…ガイド部、102…気体圧縮部、103…インバータ回路 10 ... tool system, 11 ... nail gun, 12 ... compressor, 13 ... battery pack, 16 ... striking part, 17 ... accumulator chamber, 20 ... electric motor, 25, 63 ... control circuit, 37 ... accumulator container, 43 ... Nail remaining amount detection sensor, 47 ... nail, 63A ... storage unit, 65 ... connector, 66 ... first mounting part, 67 ... second mounting part, 68 ... display, 69 ... pressure detection sensor, 85 ... exhaust pipe, 89 ... Exhaust valve, 96 ... Guide section, 102 ... Gas compression section, 103 ... Inverter circuit

Claims (15)

  1. 気体を圧縮する気体圧縮部と、
    圧縮気体で作動する工具の蓄圧部に接続可能であり、かつ、前記気体圧縮部で圧縮された圧縮気体を前記蓄圧部に供給可能な気体供給部と、
    前記気体圧縮部を制御する制御回路と、
    を有する、圧縮機であって、
    前記制御回路は、前記蓄圧部の圧縮気体の目標圧力を設定可能であり、かつ、前記目標圧力に基づいて前記気体圧縮部を制御する、圧縮機。
    A gas compression unit that compresses gas,
    A gas supply unit that can be connected to the accumulator of a tool that operates with compressed gas and that can supply the compressed gas compressed by the gas compression unit to the accumulator.
    The control circuit that controls the gas compression unit and
    Is a compressor that has
    The control circuit is a compressor that can set a target pressure of the compressed gas of the accumulator and controls the gas compression unit based on the target pressure.
  2. 前記制御回路は、
    前記気体圧縮部を作動させて圧縮気体を前記蓄圧部に送ることにより、前記蓄圧部の気体圧力を上昇させる制御と、
    前記蓄圧部の圧縮気体の圧力が前記目標圧力になったことを検出すると、前記気体圧縮部を停止させる制御と、
    を行う、請求項1記載の圧縮機。
    The control circuit is
    Control to increase the gas pressure of the accumulator by operating the gas compression unit and sending the compressed gas to the accumulator.
    When it is detected that the pressure of the compressed gas in the accumulator reaches the target pressure, the control to stop the gas compression unit and the control
    The compressor according to claim 1.
  3. 前記蓄圧部の圧縮気体の圧力を検出する圧力測定部が、更に設けられている、請求項1または2記載の圧縮機。 The compressor according to claim 1 or 2, further provided with a pressure measuring unit for detecting the pressure of the compressed gas in the pressure accumulating unit.
  4. 前記制御回路は、前記工具の種類に応じた識別情報を検出し、かつ、前記識別情報に基づいて前記目標圧力を設定する、請求項1乃至3の何れか1項記載の圧縮機。 The compressor according to any one of claims 1 to 3, wherein the control circuit detects identification information according to the type of the tool and sets the target pressure based on the identification information.
  5. 前記制御回路は、前記識別情報と前記目標圧力との関係を定めた情報を記憶している記憶部を有し、
    前記制御回路は、前記記憶部が記憶している情報に基づいて、前記目標圧力を設定する、請求項4記載の圧縮機。
    The control circuit has a storage unit that stores information that defines the relationship between the identification information and the target pressure.
    The compressor according to claim 4, wherein the control circuit sets the target pressure based on the information stored in the storage unit.
  6. 前記蓄圧部から圧縮気体を排出する排出機構を、更に備えている請求項1乃至5の何れか1項記載の圧縮機。 The compressor according to any one of claims 1 to 5, further comprising a discharge mechanism for discharging compressed gas from the accumulator.
  7. 前記工具に接続され、かつ、前記工具に対する電力の供給を可能とし、前記制御回路と前記工具との間で信号の送受信を行うことを可能とする第1装着部を有する、請求項1乃至6の何れか1項記載の圧縮機。 Claims 1 to 6 include a first mounting portion that is connected to the tool, is capable of supplying electric power to the tool, and is capable of transmitting and receiving signals between the control circuit and the tool. The compressor according to any one of the above.
  8. 電源に接続可能な第2装着部を有する、請求項1乃至7の何れか1項記載の圧縮機。 The compressor according to any one of claims 1 to 7, which has a second mounting portion that can be connected to a power source.
  9. 前記気体供給部と前記工具との接続、及び前記第1装着部と前記工具との接続を1回の操作で行うことの可能な接続機構が、更に設けられている、請求項7記載の圧縮機。 The compression according to claim 7, further comprising a connection mechanism capable of connecting the gas supply unit to the tool and connecting the first mounting unit to the tool with a single operation. Machine.
  10. 前記工具の情報を出力する表示部を、更に備えている、請求項1乃至9の何れか1項記載の圧縮機。 The compressor according to any one of claims 1 to 9, further comprising a display unit for outputting information on the tool.
  11. 前記表示部が出力する情報は、前記工具の使用履歴に基づくメンテナンス情報を含む、請求項10記載の圧縮機。 The compressor according to claim 10, wherein the information output by the display unit includes maintenance information based on the usage history of the tool.
  12. 前記工具は、駆動部を有し、
    前記制御回路は、前記駆動部を制御可能である、請求項1乃至11の何れか1項記載の圧縮機。
    The tool has a drive unit and has a drive unit.
    The compressor according to any one of claims 1 to 11, wherein the control circuit can control the drive unit.
  13. 前記制御回路は、前記工具の状態に応じて、前記気体圧縮部を制御する、請求項1乃至12の何れか1項記載の圧縮機。 The compressor according to any one of claims 1 to 12, wherein the control circuit controls the gas compression unit according to the state of the tool.
  14. 気体を圧縮する気体圧縮部と、
    圧縮気体を利用する工具の蓄圧部に接続可能であり、かつ、前記気体圧縮部で圧縮された圧縮気体を前記蓄圧部に供給可能な気体供給部と、
    前記気体圧縮部を制御する制御回路と、
    を有する、圧縮機であって、前記制御回路は、前記工具が有する駆動部を制御可能である、圧縮機。
    A gas compression unit that compresses gas,
    A gas supply unit that can be connected to the accumulator of a tool that uses compressed gas and that can supply the compressed gas compressed by the gas compression unit to the accumulator.
    The control circuit that controls the gas compression unit and
    The compressor, wherein the control circuit can control the drive unit of the tool.
  15. 請求項1乃至請求項14の何れか1項に記載された圧縮機と、前記圧縮機から供給される圧縮気体により作動する前記工具と、を有する、工具システム。 A tool system comprising the compressor according to any one of claims 1 to 14, and the tool operated by the compressed gas supplied from the compressor.
PCT/JP2021/020434 2020-06-30 2021-05-28 Compressor and tool system WO2022004216A1 (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020158102A1 (en) * 2001-04-30 2002-10-31 Patton James Andrew Portable pneumatic tool powered by an onboard compressor
JP2015223680A (en) * 2014-05-29 2015-12-14 株式会社マキタ Hammering tool
JP2017064864A (en) * 2015-09-30 2017-04-06 日立工機株式会社 Driving machine
JP2018003689A (en) * 2016-06-30 2018-01-11 日立工機株式会社 Air compressor and striking device
JP2018194005A (en) * 2018-09-05 2018-12-06 工機ホールディングス株式会社 air compressor
JP2020501934A (en) * 2016-12-22 2020-01-23 キョウセラ センコ インダストリアル ツールズ インク. Fastener drive tool with driver position sensor

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020158102A1 (en) * 2001-04-30 2002-10-31 Patton James Andrew Portable pneumatic tool powered by an onboard compressor
JP2015223680A (en) * 2014-05-29 2015-12-14 株式会社マキタ Hammering tool
JP2017064864A (en) * 2015-09-30 2017-04-06 日立工機株式会社 Driving machine
JP2018003689A (en) * 2016-06-30 2018-01-11 日立工機株式会社 Air compressor and striking device
JP2020501934A (en) * 2016-12-22 2020-01-23 キョウセラ センコ インダストリアル ツールズ インク. Fastener drive tool with driver position sensor
JP2018194005A (en) * 2018-09-05 2018-12-06 工機ホールディングス株式会社 air compressor

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