WO2019168077A1 - 打込み工具 - Google Patents
打込み工具 Download PDFInfo
- Publication number
- WO2019168077A1 WO2019168077A1 PCT/JP2019/007714 JP2019007714W WO2019168077A1 WO 2019168077 A1 WO2019168077 A1 WO 2019168077A1 JP 2019007714 W JP2019007714 W JP 2019007714W WO 2019168077 A1 WO2019168077 A1 WO 2019168077A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- driving
- contact arm
- trigger
- compressed air
- moving member
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
- B25C1/00—Hand-held nailing tools; Nail feeding devices
- B25C1/04—Hand-held nailing tools; Nail feeding devices operated by fluid pressure, e.g. by air pressure
- B25C1/047—Mechanical details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
- B25C1/00—Hand-held nailing tools; Nail feeding devices
- B25C1/04—Hand-held nailing tools; Nail feeding devices operated by fluid pressure, e.g. by air pressure
- B25C1/041—Hand-held nailing tools; Nail feeding devices operated by fluid pressure, e.g. by air pressure with fixed main cylinder
- B25C1/043—Trigger valve and trigger mechanism
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
- B25C1/00—Hand-held nailing tools; Nail feeding devices
- B25C1/008—Safety devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
- B25C7/00—Accessories for nailing or stapling tools, e.g. supports
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
- B25C1/00—Hand-held nailing tools; Nail feeding devices
- B25C1/06—Hand-held nailing tools; Nail feeding devices operated by electric power
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
- B25C5/00—Manually operated portable stapling tools; Hand-held power-operated stapling tools; Staple feeding devices therefor
- B25C5/10—Driving means
- B25C5/15—Driving means operated by electric power
Definitions
- the present invention relates to a driving tool driven by a fluid such as compressed air.
- Driving tools are known. In such a nailing machine, there are two operations: one operation of pulling a trigger provided on the handle, and another operation of pushing a contact arm provided to be able to reciprocate by protruding from the tip of the nose to the workpiece. The nail is driven by operating the driving mechanism by operating the member.
- trigger ON the state where the trigger is pulled by one operation
- trigger OFF the state where one operation is released and the trigger is not pulled
- ON of the contact arm A state in which the contact arm is pressed by another operation
- OFF of the contact arm A state in which the other operation is released and the contact arm is not pressed.
- the driving mechanism is operated by turning on the trigger while the contact arm is turned on, and the nail is driven.
- the trigger and the contact arm are turned OFF, and the trigger and the contact arm are turned ON again as described above, so that the driving mechanism is activated and the next nail is driven.
- the trigger and the contact arm are turned off each time the nail is driven, when the trigger and the contact arm are turned on, an operation in which the next nail is driven is referred to as a single shot mode.
- the contact arm is turned off with the trigger turned on, and the contact arm is turned on again with the trigger turned on.
- a technique that allows the user to perform the following. In this way, the operation in which the nails are continuously driven by repeating ON and OFF of the contact arm while the trigger is in the ON state is referred to as a continuous driving mode.
- the nail In the continuous driving mode, after the nail is driven, the nail can be driven continuously each time the contact arm is pressed against the workpiece while the trigger is pulled, which is suitable for quick work.
- the operation of the trigger and the contact arm is released, and the next operation of pulling the trigger is performed by pressing the contact arm against the driven material again, and then the next nail is driven. Therefore, although there is an effect of restricting careless operation, it is not suitable for quick work. Therefore, after pressing the contact arm against the material to be driven and then pulling the trigger, the nail is driven for the first time, and then the contact arm is hit without releasing the trigger operation for a certain period of time.
- Patent Document 1 There has been proposed a technique that enables a continuous driving operation of a nail only by an operation of pressing the insert.
- the control that enables continuous hitting operation for a certain period of time is controlled by an electric timer.
- an electric timer By using this, it is possible to stably measure time.
- nailers driven by compressed air do not have a source of electricity. For this reason, in order to use an electric timer, a power supply and a circuit are required.
- An oil damper can be used as a mechanical timing mechanism.
- the oil damper is configured to apply a load to the movement of the piston by the resistance of the oil. If the piston is moved by the spring force, the oil damper moves by decelerating the piston moving speed by the spring force and keeping it constant. It is possible to use the time required for.
- the operation that the contact arm is pressed against the material to be driven is transmitted to the oil damper and the oil damper is operated. Will increase. Further, when performing the continuous driving operation, in the first operation of pressing the contact arm against the material to be driven, the operation load increases because the oil damper is operated. On the other hand, in the second and subsequent operations of pressing the contact arm against the material to be driven, the operation amount of the oil damper is reduced, so that the operation load is reduced. Such fluctuations in the operation load lead to deterioration in operability. The same applies when a load is applied by resistance due to friction other than oil.
- the present invention has been made to solve such a problem, and provides a driving tool that can stably switch the execution / non-execution of a continuous driving operation with a mechanical configuration without increasing an operation load.
- the purpose is to provide.
- the present invention is a driving tool for driving a fastener supplied to a nose portion by a driving mechanism driven by a fluid, and measures the time for switching the operation of the driving mechanism.
- the timing mechanism is supplied with a fluid for operating the driving mechanism, and moves the moving member from the initial position to the timing start position to start timing with the force of the fluid, and from the timing start position to the initial position.
- This is a driving tool that controls the movement of the moving member and measures the time by applying a load due to resistance when the moving member moves.
- the fluid for operating the driving mechanism when the fluid is supplied and the driving mechanism is operated, the fluid for operating the driving mechanism is supplied to the timing mechanism, and the moving member is moved to the timing start position to switch the operation of the driving mechanism.
- Time measurement starts. After the elapse of time for stopping the operation of the driving mechanism, the driving mechanism can be operated by performing a predetermined operation.
- the mechanical timekeeping mechanism is operated to increase the operation load, and the mechanical timekeeping mechanism enables stable timekeeping, and the presence or absence of the driving mechanism is switched at a predetermined timing. Can do.
- FIG. 1 is a main configuration diagram illustrating an example of a nail driver according to the first embodiment
- FIG. 2 is an overall configuration diagram illustrating an example of a nail driver according to the first embodiment.
- the nail driver 1A of the first embodiment stores a driving cylinder 2 that performs a striking operation by operating with compressed air as a fluid as a power source, and compressed air supplied from an external air compressor (not shown).
- the air chamber 3 is provided.
- a driving cylinder 2 is provided inside a housing 10 having a shape extending in one direction, and an air chamber 3 is provided inside a handle 11 extending from the housing 10 in the other direction.
- the nail driver 1 ⁇ / b> A is provided with a blowback chamber 31 around the lower portion of the driving cylinder 2 inside the housing 10.
- the driving cylinder 2 is an example of a driving mechanism, and includes a driver 20 for driving a nail or the like (not shown) and a driving piston 21 provided with the driver 20, and the driving piston 21 is slidably provided. In the driving cylinder 2, the driving piston 21 is moved when the driving piston 21 is pressed by the compressed air, and the driver 20 is driven.
- Compressed air is supplied to the air chamber 3 from a compressed air source such as an air compressor via an air plug 30 provided at an end of the handle 11.
- the blowback chamber 31 is supplied with compressed air to drive the driving piston 21 after the driving operation back to the initial position.
- the blowback chamber 31 is connected to the driving cylinder 2 through the inflow / outlet 31a.
- the inflow / outlet port 31a includes a check valve 31b that regulates the direction in which air flows in one direction.
- the check valve 31 b allows air to flow from the driving cylinder 2 to the blowback chamber 31 and restricts the reverse flow of air from the blowback chamber 31 to the driving cylinder 2.
- the nailing machine 1 ⁇ / b> A includes a nose 12 into which a driver 20 is inserted at one end of the housing 10 and a magazine 13 that supplies a nail (not shown) to the nose 12.
- the nose 12 extends along the moving direction of the driver 20.
- the side provided with the nose 12 is defined as the downward direction.
- the nailing machine 1A includes a main valve 4 that reciprocates the driving piston 21 by restricting inflow and outflow of compressed air in the air chamber 3, and an activation valve 5 that operates the main valve 4.
- the main valve 4 reciprocates the driving piston 21 by switching inflow of compressed air from the air chamber 3 into the driving cylinder 2 and discharging compressed air from the driving cylinder 2 to the outside.
- the start valve 5 includes a valve stem 50 provided to be reciprocally movable. The valve stem 50 moves a predetermined amount to open the flow path 40 and operate the main valve 4.
- the nailing machine 1A performs one operation of a trigger 6 that receives one operation for actuating the start valve 5, a contact arm 8 that moves in response to another operation that is pressed against a material to be driven by the nail.
- the contact lever 7 is provided so as to be operable by the operation of the received trigger 6 and the operation of the contact arm 8 that has undergone another operation, and switches whether the activation valve 5 is activated or not. Further, the nailing machine 1A regulates the movement, movement speed or movement amount of the contact lever 7 for a predetermined time to determine whether or not the contact lever 7 is actuated by the contact arm 8 in this example.
- a restricting portion 9 that switches depending on whether or not the contact arm 8 is locked is provided.
- the trigger 6 is provided on one side of the handle 11, which is the side on which the nose 12 is provided.
- the trigger 6 is rotatably supported by a shaft 60 at one end side that is close to the housing 10. Further, the trigger 6 has a side opposite to the side supported by the shaft 60, that is, the other end side far from the housing 10 is a rotational operation with the shaft 60 as a fulcrum, and the side on which the nose 12 is provided. Is biased by a spring 61 in the direction of movement.
- the trigger 6 is regulated by the trigger 6 coming into contact with the abutting portions formed on the housing 10 and the handle 11 in the present embodiment.
- the contact lever 7 includes a locking portion 70 that can lock the contact arm 8 at one end, and the other end is rotatably supported by the trigger 6 by a shaft 71.
- a pressing portion 72 that can press the valve stem 50 of the activation valve 5 is provided between the locking portion 70 and the shaft 71.
- the contact lever 7 is provided with a nose 12 on the side opposite to the side supported by the shaft 71, that is, on one end side where the locking portion 70 is provided, and is rotated with the shaft 71 as a fulcrum. It is urged by a spring 73 such as a torsion coil spring in the direction of moving to the side.
- the contact arm 8 is provided so as to be movable along the extending direction of the nose 12, and is provided with an abutting portion 80 that abuts against the material to be driven on the tip side of the nose 12. Further, the contact arm 8 includes a pressing portion 81 that operates the contact lever 7. The contact arm 8 is urged by a spring 83 in a direction protruding from the distal end side of the nose 12.
- the trigger 6 When the operation is released, the trigger 6 is urged by the spring 61 and moves to the initial position by a rotating operation with the shaft 60 as a fulcrum.
- the trigger 6 moves by a pulling operation from an initial position to an operation position where the activation valve 5 can be operated by the contact lever 7 by a rotational operation with the shaft 60 as a fulcrum.
- the contact lever 7 When the contact lever 7 is pushed by the contact arm 8, the contact cylinder 7 can be rotated from the initial position according to the position of the trigger 6 by the rotation operation with the shaft 71 as a fulcrum. Then, the valve stem 50 is pushed and moved to an operable position where the start valve 5 can be operated.
- the contact arm 8 moves from the initial position to the operating position where the contact lever 7 is operated by the pressing portion 81 when the abutting portion 80 is abutted against and pressed against the workpiece.
- the contact arm 8 is moved from the initial position to the operating position, and when the pressing portion 81 is engaged with the engaging portion 70 of the contact lever 7, the contact arm 7 is operated by the operation of the contact arm 8, and the contact lever 7 is moved. Move from the initial position to the ready position. Further, the contact arm 8 can be switched between the locking portion 70 of the contact lever 7 and the pressing portion 81 of the contact arm 8 according to the position of the trigger 6 and the position of the contact lever 7.
- the contact lever 7 moves together with the trigger 6 by the rotation of the trigger 6 with the shaft 60 as a fulcrum. Accordingly, the initial position and the operable position of the contact lever 7 are relative positions that change according to the position of the trigger 6, and the positions of the locking portion 70 and the pressing portion 72 of the contact lever 7 are determined by the trigger 6. It changes depending on whether it is in the initial position or the operation position.
- the pressing portion 81 can be locked to the locking portion 70 of the contact lever 7 even if the contact arm 8 moves. Even if the trigger 6 moves to the operation position, the pressing portion 72 of the contact lever 7 cannot press the valve stem 50 of the start valve 5.
- the regulating unit 9 includes a regulating member 90 that regulates the position of the contact lever 7 to an operation standby position that can be operated by the contact arm 8. Further, the restricting portion 9 includes an oil damper 91 that holds the contact lever 7 in the operation standby position for a predetermined time.
- the operation standby position of the contact lever 7 is a position or a range where the contact lever 7 can be locked with the contact arm 8, and the contact lever 7 is operated by the contact arm 8 while the contact lever 7 is in this position or range. It is possible.
- the operation standby position is referred to as a lockable position.
- the regulating member 90 is provided so as to be movable along the moving direction of the contact arm 8, and includes a pressing portion 90a that presses the contact lever 7 at one end along the moving direction.
- the restricting member 90 is provided with a pressing portion 90 a adjacent to the pressing portion 81 of the contact arm 8.
- the regulating member 90 includes a locked portion 90b that can be locked with the oil damper 91.
- the regulating member 90 is urged by the spring 90c in the direction in which the pressing portion 90a approaches the contact lever 7.
- the regulating member 90 regulates the position of the contact lever 7 from the initial position where the pressing portion 90a does not contact the contact lever 7 to a lockable position where the contact lever 7 and the contact arm 8 can be locked. Move up.
- the return restricting position of the restricting member 90 is an operation in which the restricting member 90 is moved by being pushed by the spring 90c, and the pressing portion 90a protrudes from the pressing portion 81 in a state where the contact arm 8 is moved to the initial position. This is a position where the contact lever 7 can be brought into contact with the locking portion 70.
- the oil damper 91 is an example of a time measuring mechanism, and a piston shaft portion 91a is connected to a piston (not shown) whose movement speed is controlled by resistance due to oil viscosity or the like.
- the oil damper 91 includes a moving member 92 that moves the regulating member 90 and controls the movement, moving speed, or moving amount of the moving member 92.
- the oil damper 91 controls the moving speed of the moving member 92 in this example.
- the moving member 92 is provided so as to be movable along the moving direction of the restricting member 90, and a pressed portion 92 a connected to the piston shaft portion 91 a and a locking portion that locks to the locked portion 90 b of the restricting member 90. 92b.
- the oil damper 91 is a time for restricting the movement of the contact lever 7 that has been moved to the lockable position after the operation of the contact arm 8 is released from the initial position where the restricting member 90 is moved to the initial position.
- the moving member 92 is moved to the timing start position where the time until the regulating member 90 moved to the position is moved to the initial position is started.
- the regulating member 90 is provided with a locked portion 90b in the moving path of the locking portion 92b by the movement of the moving member 92.
- the movement of the moving member 92 from the initial position to the timing start position releases the locking of the locking portion 92b of the moving member 92 and the locked portion 90b of the regulating member 90.
- the regulating member 90 is pushed by the spring 90c and moves from the initial position to the return regulating position.
- the moving member 92 is moved from the timing start position to the initial position, and the engaging portion 92b of the moving member 92 and the engaged portion 90b of the restricting member 90 are engaged. As a result, the restricting member 90 moves from the return restricting position to the initial position.
- the oil damper 91 operates with compressed air that is a power source of the nailer 1A.
- an air cylinder 93 that operates with compressed air is provided.
- the air cylinder 93 includes an air piston 93a that moves while being pressed by compressed air, and a piston shaft portion 93b that is coupled to the air piston 93a.
- the air cylinder 93 has a piston shaft portion 93 b connected to the pressed portion 92 a of the moving member 92.
- the air cylinder 93 is supplied with compressed air from the blowback chamber 31 in this example.
- the working air flow path 93c connected with the discharge port 31c of the blowback chamber 31 is provided between the blowback chamber 31 and the air cylinder 93.
- the time for the moving member 92 to move from the timing start position to the initial position is controlled, and the time for the restricting member 90 to move from the return restriction position to the initial position is controlled. Accordingly, the contact lever 7 that has moved to the lockable position by the movement of the contact arm 8 to the initial position is controlled by the operation of the regulating member 90 and the moving member 92 until the contact lever 7 returns to the initial position.
- ⁇ Operation example of nailing machine of the first embodiment> 3 to 8 are explanatory views showing an example of the operation of the nail driver according to the first embodiment.
- the nailer 1A according to the first embodiment will be described with reference to each drawing. The operation will be described.
- the trigger 6 is not pulled and is in the initial position, and the contact arm 8 is not pushed by the driven material and is in the initial position. For this reason, the contact lever 7, the regulating member 90, and the moving member 92 are also in their initial positions.
- the locking portion 70 of the contact lever 7 is positioned in the movement path of the pressing portion 81 of the contact arm 8.
- the operation is performed as shown in FIG.
- the pressing portion 72 of the contact lever 7 in the possible position presses the valve stem 50 of the starting valve 5.
- the main valve 4 is controlled, the driving cylinder 2 is operated by compressed air, the driving piston 21 moves in the direction of driving out a fastener (not shown), in this example, a nail, and the driver 20 drives a nail (not shown). Operation is performed.
- a part of the air in the driving cylinder 2 is supplied to the blowback chamber 31 from the inflow / outlet port 31a.
- compressed air is supplied from the blowback chamber 31 to the driving cylinder 2, and the driving piston 21 moves in a direction in which the driver 20 is returned.
- the contact arm 8 is released from the operating position by the force of the spring 83, as shown in FIG. Move to position.
- the regulating member 90 that has moved to the return regulating position regulates the movement of the contact lever 7 that moves in the direction in which the pressing portion 90a is located on the movement locus of the contact lever 7 and returns from the operable position to the initial position.
- the contact lever 7 moves until it comes into contact with the pressing portion 90a of the regulating member 90, and stops at the lockable position.
- the locking portion 70 is positioned on the movement locus of the pressing portion 81 of the contact arm 8.
- the moving member 92 starts moving in a direction to return from the time measurement start position to the initial position by the spring force (not shown) of the oil damper 91. To do.
- the moving member 92 moves from the timing start position to the initial position by the force of a spring (not shown), but the moving speed of the moving member 92 is controlled by resistance due to oil viscosity or the like. Thereby, the time until the movement from the timing start position to the initial position is controlled, and as shown in FIG. 6, the locking portion 92b of the movement member 92 is held for a predetermined time until the movement member 92 moves to the initial position.
- the locked portion 90b of the regulating member 90 is in an unlocked state, and the regulating member 90 is stopped at the return regulating position.
- the operation position is moved to a position before the moving member 92 moves from the timing start position to the initial position.
- the pressing portion 81 of the contact arm 8 can press the locking portion 70 of the contact lever 7. Is possible.
- the contact arm 8 when the contact arm 8 is moved to the initial position while the trigger 6 is pulled and the operation position is maintained, the contact arm 8 is moved again to the operating position within a predetermined time, as shown in FIG.
- the locking portion 70 of the contact lever 7 is pushed by the pushing portion 81 of the contact arm 8, the contact lever 7 moves to the operable position, and the pushing portion 72 pushes the valve stem 50 of the starting valve 5.
- the moving member 92 is moved to the initial position by the oil damper 91 when a predetermined time elapses after the contact arm 8 is moved to the initial position while the trigger 6 is pulled.
- the restricting member 90 is moved from the return restricting position to the initial position by being pressed by the moving member 92 that is moved by the oil damper 91.
- the contact lever 7 moves from the lockable position when the trigger 6 is at the operating position to the initial position by the rotation operation with the shaft 71 by the spring 73 as a fulcrum.
- the contact lever 7 is moved to the initial position while the trigger 6 remains in the operating position, the locking portion 70 of the contact lever 7 is retracted from the moving path of the pressing portion 81 of the contact arm 8.
- the activation valve 5 is not pushed by the contact lever 7, and the driving operation is not performed. Therefore, the continuous driving operation by pressing the contact arm 8 against the workpiece to be driven while the trigger 6 is pulled is regulated over time using a mechanical configuration. it can.
- the contact lever 7 moves to the initial position.
- the force that presses the contact arm 8 is released, so that the contact arm 8 moves to the initial position.
- the trigger 6 moves to the initial position by releasing the force that pulls the trigger 6.
- the initial state is restored as shown in FIG. In the initial state, the locking portion 70 of the contact lever 7 moves to the movement path of the pressing portion 81 of the contact arm 8.
- valve stem 50 of the start valve 5 is not pushed by the contact lever 7, and the driving operation is not performed. Therefore, before the trigger 6 is pulled, the driving operation by an operation other than the normal procedure of pressing the contact arm 8 against the driven material can be regulated.
- the oil damper 91 is provided in order to decelerate the moving speed in the operation in which the moving member 92 moves from the timing start position to the initial position, and applies a load due to the viscosity of the oil. For this reason, if the contact arm 8 is transmitted to the moving member 92, and the moving member 92 moves from the initial position to the timing start position, the oil viscosity becomes a load, and the contact arm 8 is pressed. The operation load increases. Moreover, it is necessary to match the movement amount of the oil damper 91 with the movement amount of the contact arm 8, and there is a restriction in securing the movement amount of the oil damper 91 necessary for timing.
- the timing is started even if the actual driving operation is not performed. Since a continuous driving operation is possible, an inadvertent driving operation may be performed.
- the oil damper 91 and the moving member 92 are operated by compressed air which is a power source of the nailing machine 1A.
- compressed air which is a power source of the nailing machine 1A.
- an air cylinder 93 to which compressed air is supplied from the blowback chamber 31 is provided, and the oil damper 91 and the moving member 92 are operated by the air cylinder 93.
- a mechanical timing mechanism can be operated without increasing the operation load of the contact arm 8.
- the amount of movement of the oil damper 91 necessary for timing can be set.
- the compressed air is supplied from the driving cylinder 2 to the blowback chamber 31 by the operation of the driver 20, the oil damper 91 and the moving member 92 are operated. Once started, a continuous driving action is possible. Therefore, if the actual driving operation is not performed, the continuous driving operation cannot be performed, and the inadvertent driving operation can be reliably controlled.
- the compressed air is supplied from the blowback chamber 31 to the air cylinder 93, but it may be supplied from the driving cylinder 2.
- the timing mechanism is the oil damper 91 that applies a load to the movement of the moving member 92 by resistance due to oil viscosity or the like, it is not limited to this.
- a cylinder that is filled and sealed with a liquid different from oil, and a resistance that causes a load on the movement of the moving member 92 a damper that fills and seals a cylinder with a gas such as nitrogen gas instead of oil, or a cylinder
- a damper having a configuration for controlling the inflow of gas into the cylinder and the outflow of gas from the cylinder may be used.
- a friction damper that applies a load to the movement of the moving member 92 by resistance due to friction may be used.
- the nailing machine for driving a nail was described as an example of the driving tool of the present invention, but the present invention is not limited to this.
- the present invention is also applicable to, for example, a screw driving machine that drives a screw.
- This application is based on Japanese Patent Application No. 2018-036898 filed on Mar. 1, 2018, the contents of which are incorporated herein by reference.
- SYMBOLS 1A Nail driver (driving tool), 10 ... Housing, 11 ... Handle, 12 ... Nose, 13 ... Magazine, 2 ... Driving cylinder (driving mechanism), 20 ⁇ ⁇ ⁇ Driver, 21 ... Piston piston, 3 ... Air chamber, 30 ... Air plug, 31 ... Blowback chamber, 31a ... Inlet / exhaust port, 31b ... Check valve, 31c: Discharge port, 4 ... Main valve, 5 ... Start valve, 50 ... Valve stem, 6 ... Trigger, 60 ... Shaft, 61 ... Spring, 7 ... Contact lever, 70 ... locking part, 71 ... shaft, 72 ... pressing part, 73 ... spring, 8 ...
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Abstract
Description
図1は、第1の実施の形態の釘打機の一例を示す要部構成図、図2は、第1の実施の形態の釘打機の一例を示す全体構成図である。
図3~図8は、第1の実施の形態の釘打機の動作の一例を示す説明図であり、以下に、各図を参照して、第1の実施の形態の釘打機1Aの動作について説明する。
オイルダンパ91は、移動部材92が計時開始位置から初期位置へ移動する動作での移動速度を減速させるために設けられ、オイルの粘性で負荷を与えている。このため、コンタクトアーム8が被打込材に押し付けられる動作を移動部材92に伝達し、移動部材92が初期位置から計時開始位置へ移動する構成とすると、オイルの粘性が負荷となり、コンタクトアーム8の操作荷重が増加する。また、オイルダンパ91の移動量を、コンタクトアーム8の移動量に合わせる必要があり、計時に必要なオイルダンパ91の移動量を確保することに制約がある。更に、コンタクトアーム8の動作を移動部材92に伝達し、コンタクトアーム8の動作で移動部材92を計時開始位置へ移動させる構成とすると、実際の打込み動作が行われなくても計時が開始され、連続的な打ち込み動作が可能となるので、不用意な打込み動作が行われる可能性がある。
上述の実施の形態において、本発明の打込み工具の一例として釘を打込む釘打機を説明したが、本発明はこれに限定されない。本発明は、例えば、ねじを打込むねじ打機にも適用可能である。
本出願は、2018年3月1日出願の日本特許出願特願2018-036898に基づくものであり、その内容はここに参照として取り込まれる。
Claims (5)
- ノーズ部に供給されたファスナーを、流体で駆動される打込機構によって打込む打込み工具であって、
前記打込機構の作動の有無を切り替える時間の計時を行う計時機構を備え、
前記計時機構は、前記打込機構を作動させる流体が供給され、流体の力で移動部材を初期位置から計時を開始する計時開始位置へ移動させると共に、計時開始位置から初期位置へ前記移動部材が移動する際に抵抗による負荷を与えることで、前記移動部材の移動を制御して計時を行う
打込み工具。 - 前記打込機構は圧縮空気で駆動され、
圧縮空気が供給されて作動するエアピストンを有したエアシリンダを備え、前記エアピストンの動きが前記計時機構に伝達されて前記移動部材を移動させる
請求項1に記載の打込み工具。 - 前記打込機構は、圧縮空気が供給されて作動する打込ピストンを有した打込シリンダと、
前記打込シリンダから圧縮空気が供給され、前記打込ピストンを復帰させる圧縮空気を前記打込シリンダに供給するブローバックチャンバを備え、
前記エアシリンダは、前記ブローバックチャンバから圧縮空気が供給される
請求項2に記載の打込み工具。 - 前記打込機構は、圧縮空気が供給されて作動する打込ピストンを有した打込シリンダを備え、
前記エアシリンダは、前記打込シリンダから圧縮空気が供給される
請求項2に記載の打込み工具。 - 前記計時機構は、オイルによる抵抗で前記移動部材が移動する際の負荷を与えるオイルダンパである
請求項1~請求項4の何れか1項に記載の打込み工具。
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JP2020503599A JP7452414B2 (ja) | 2018-03-01 | 2019-02-27 | 打込み工具 |
US16/975,352 US11607785B2 (en) | 2018-03-01 | 2019-02-27 | Fastener-driving tool |
EP19761618.8A EP3760382A4 (en) | 2018-03-01 | 2019-02-27 | FIXING ELEMENT DRIVE TOOL |
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JP2016179526A (ja) | 2015-03-24 | 2016-10-13 | 株式会社マキタ | 打ち込み工具 |
WO2017115593A1 (ja) * | 2015-12-28 | 2017-07-06 | 日立工機株式会社 | 打込機 |
JP2018036898A (ja) | 2016-08-31 | 2018-03-08 | キヤノン株式会社 | 画像処理装置及びその制御方法 |
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JP3287172B2 (ja) * | 1995-04-05 | 2002-05-27 | マックス株式会社 | 釘打ち機のトリガ装置 |
JP6824781B2 (ja) * | 2017-03-01 | 2021-02-03 | 株式会社マキタ | 打ち込み工具 |
JP7043771B2 (ja) | 2017-09-29 | 2022-03-30 | マックス株式会社 | 打込み工具 |
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- 2019-02-27 EP EP19761618.8A patent/EP3760382A4/en active Pending
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JP2016179526A (ja) | 2015-03-24 | 2016-10-13 | 株式会社マキタ | 打ち込み工具 |
WO2017115593A1 (ja) * | 2015-12-28 | 2017-07-06 | 日立工機株式会社 | 打込機 |
JP2018036898A (ja) | 2016-08-31 | 2018-03-08 | キヤノン株式会社 | 画像処理装置及びその制御方法 |
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US20200398413A1 (en) | 2020-12-24 |
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