WO2013154032A1 - 打込み工具 - Google Patents
打込み工具 Download PDFInfo
- Publication number
- WO2013154032A1 WO2013154032A1 PCT/JP2013/060375 JP2013060375W WO2013154032A1 WO 2013154032 A1 WO2013154032 A1 WO 2013154032A1 JP 2013060375 W JP2013060375 W JP 2013060375W WO 2013154032 A1 WO2013154032 A1 WO 2013154032A1
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- WO
- WIPO (PCT)
- Prior art keywords
- cylinder
- driving
- driving tool
- disposed
- handle
- 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
-
- 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
-
- 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
Definitions
- the present invention relates to a driving tool for driving a workpiece to be driven.
- JP 2011-25363 discloses an electro-pneumatic driving tool equipped with an electric motor driven by a battery and a compression device driven by the electric motor.
- This driving tool is configured to supply compressed air generated by a compression device into a driving cylinder, and to drive a driving mechanism linearly with the supplied compressed air to drive a nail as a material to be driven. Has been.
- a compression cylinder for generating compressed air is arranged in parallel near the driving cylinder, and a handle is connected to the compression cylinder in a cross shape.
- the compression cylinder and the driving cylinder are arranged in parallel, if the nail driving direction of the driving mechanism is the front of the driving tool and the opposite side is the rear, the piston stroke necessary for generating compressed air is set.
- the rear side (compression chamber) of the compression cylinder is disposed so as to protrude further rearward than the rear end of the driving cylinder. Therefore, it has not been effective in shortening the longitudinal dimension of the driving tool.
- the present invention has been made in view of the above problems, and an object thereof is to provide a driving tool effective for downsizing.
- a preferable form of the driving tool according to the present invention includes a first cylinder, a first piston that is slidably disposed in the first cylinder and configured to generate compressed air in the first cylinder, A motor that drives one piston, a second cylinder, a second piston that is slidably disposed in the second cylinder and includes a sliding portion and a long driving portion connected to the sliding portion; , A handle and a magazine configured to supply the material to be driven onto the operation line of the driving portion. Then, the compressed air in the first cylinder is supplied into the second cylinder, and the second piston is moved linearly toward the distal end side of the second cylinder by the compressed air, so that the driven portion becomes the driven material. It is configured to drive.
- the “driving tool” in the present invention typically corresponds to a nail driver or a tucker.
- the “placed material” preferably includes a straight bar-shaped one with a sharpened tip, a U-shaped staple, or the like.
- a mode of “supplying the material to be driven onto the operation line of the driving unit” by the magazine a mode of supplying the material to be driven from a direction perpendicular to the operation line with respect to the operation line of the driving unit, or the operation
- the aspect which supplies a to-be-placed material from the direction which inclines to a line is included suitably.
- the first cylinder is arranged so as to cross the second cylinder and is arranged along the magazine.
- the first piston is configured to slide in a direction along the magazine.
- the handle is disposed on the opposite side of the magazine of the first cylinder in the direction in which the operation line of the driving portion extends.
- the magazine in the present invention is formed as a long member extending in the predetermined direction so as to accommodate a plurality of workpieces arranged side by side in the predetermined direction.
- positioning aspect of a handle the aspect arrange
- the first cylinder is disposed so as to intersect the second cylinder, is disposed along the magazine, and the first piston slides in a direction along the magazine. Therefore, when the driving direction of the workpiece to be driven by the second piston is the front and the opposite side is the rear, the protrusion of the first cylinder to the rear of the driving tool is suppressed. As a result, the overall length of the driving tool can be shortened and the driving tool can be made compact.
- the magazine and the first cylinder are arranged on the tip side of the second cylinder.
- the handle is disposed on the rear end side opposite to the front end side of the second cylinder.
- the compression cylinder and the driving cylinder are arranged in parallel, and the handle is connected to the compression cylinder. For this reason, the handle is disposed at a position far from the operation line of the driving portion disposed in the driving cylinder.
- the handle since the handle is disposed on the rear end side of the second cylinder, the handle can be disposed close to the operation line of the driving portion. For this reason, generation
- the magazine and the first cylinder are arranged adjacent to each other.
- the magazine and the first cylinder are arranged adjacent to each other, so that further compacting of the driving tool is achieved.
- the driving tool which concerns on this invention, it is provided in the compressed air supply path which connects a 1st cylinder and a 2nd cylinder, and a compressed air supply path, connects a 1st cylinder and a 2nd cylinder, And a valve member for blocking communication.
- the valve member is arrange
- the compressed air supply passage most of the compressed air supply passage always leads to the first cylinder by arranging the valve member in the connection portion connected to the second cylinder in the compressed air supply passage. That is, the compressed air supply passage can be a part of the compression chamber. For this reason, it is suppressed that the compressed air is expanded while compressed air is supplied into the second cylinder, and energy loss is reduced.
- the compressed air supply passage is provided along the long axis of the second cylinder.
- the “compressed air supply passage” suitably includes an embodiment formed integrally as an internal passage inside a wall forming the second cylinder, and an embodiment formed as a separate member from the second cylinder.
- the compressed air supply passage is preferably formed in a tubular member.
- the other constituent members constituting the driving tool are rationally arranged. That is, other components are arranged without being obstructed by the compressed air supply passage.
- the magazine and the first cylinder are arranged in parallel to each other. Note that “parallel” does not have to be strictly parallel, and may be substantially parallel.
- the magazine and the first cylinder are arranged in parallel to each other, so that waste relating to the arrangement space can be eliminated.
- the rotating shaft of the motor is arranged in parallel to the long axis of the second cylinder. Note that “parallel” does not have to be strictly parallel, and may be substantially parallel.
- the driving tool has an operating member that is manually operated by an operator to control the motor.
- the first cylinder, the second cylinder, the handle, and the motor are arranged so as to form a space surrounded by the first cylinder, the second cylinder, the handle, and the motor.
- the operation member is disposed so as to protrude toward the space.
- the operation member preferably includes a trigger or a switch operated by an operator.
- the operation member is preferably attached to the handle, and is preferably disposed in a region adjacent to the second cylinder of the handle.
- the space surrounded by the first cylinder, the second cylinder, the handle, and the motor is formed, so that the strength against the external force acting on the driving tool from the outside to the inside of the space is increased. .
- the operation member is disposed so as to protrude toward the space, the operation member is protected from the external force.
- the operation member is easily operated by an operator who holds the handle.
- steering-wheel, and a motor are arrange
- one end of the handle is connected to the second cylinder.
- steering-wheel is arrange
- a motor and a battery that supplies electric power to the motor are arranged on the other end side of the handle with respect to the crossing direction.
- the members of the electric system are rationally arranged adjacent to each other. Further, when the weight ratio of the motor and the battery disposed on the other end side of the handle to the second cylinder connected to the one end portion of the handle is set to approximately 1, the center of gravity of the driving tool is the handle Is set at a substantially intermediate position. This improves the operability of the driving tool.
- FIG. 4 is a sectional view taken along line BB in FIG. 3.
- FIG. 4 is a sectional view taken along the line CC of FIG. 3.
- FIG. 3 is a sectional view taken along line DD in FIG. 2. It is a figure which shows the link mechanism for a valve movement.
- FIG. 4 is a cross-sectional view taken along the line EE of FIG. 3 and shows a state in which the valve is positioned forward and communication between the compression chamber and the cylinder chamber is blocked.
- FIG. 5 is a cross-sectional view showing a nail driving state in which the valve is positioned rearward, the compression chamber and the cylinder chamber are communicated, and the driving piston is moved forward. It is sectional drawing which shows the state by which the state which the compression chamber and the cylinder chamber were connected was maintained, and the driving piston was returned near the initial position of back. It is a perspective view which shows a cylindrical cam. It is sectional drawing which shows the modification regarding a valve
- the nailing machine 100 generally includes a main body housing 101 as a tool body that forms an outline of the nailing machine 100, and a driving device to be driven into a workpiece. It is mainly composed of a magazine 105 in which nails (not shown) as materials are accommodated.
- the main body housing 101 is joined together by a pair of substantially symmetrical housings.
- the main body housing 101 includes a handle portion 103 gripped by an operator, a driving mechanism housing portion 101A for housing a nail driving mechanism 120 (see FIG. 3), and a compression device housing portion for housing a compression device 130 (see FIG. 3).
- a motor housing portion 101C for housing 101B and the electric motor 111 (see FIG. 7) is integrally provided.
- the handle portion 103, the driving mechanism accommodating portion 101A, the compression device accommodating portion 101B, and the motor accommodating portion 101C of the main body housing 101 are arranged so as to form a substantially rectangular shape in which each component is defined as four sides. .
- the handle portion 103 and the compression device housing portion 101B are disposed so as to form opposite sides
- the driving mechanism housing portion 101A and the motor housing portion 101C are disposed so as to constitute opposite sides.
- a rectangular shape such as a rectangular shape, a square shape, a trapezoidal shape, or a parallelogram shape is formed. It is not necessary that all of them extend in a straight line.
- the handle portion 103 may be formed in a curved line.
- the handle portion 103 is a long member having a predetermined length, and one end side in the extending direction in which the handle portion 103 extends is connected to one end side (rear side) of the driving mechanism housing portion 101A, and the extending direction Is connected to one end side (rear side) of the motor accommodating portion 101C.
- the compression device housing portion 101B is disposed so as to extend substantially parallel to the handle portion 103, and one end portion in the extending direction in which the compression device housing portion 101B extends is the other end of the driving mechanism housing portion 101A.
- the other end side in the extending direction is connected to the other end side (front side) of the motor accommodating portion 101C.
- the handle portion 103, the driving mechanism housing portion 101A, the compression device housing portion 101B, and the motor housing portion 101C form a substantially rectangular space S.
- the handle portion 103 is an implementation configuration example corresponding to the “handle” in the present invention.
- FIG. 1 shows a driving direction (launching direction) of a nail in which a nail is driven out in the right direction in FIG. 1 from a driver guide 141 arranged at a tip portion (right side in FIG. 1) of the nail driver 100.
- This driving direction is the direction in which the driver 125 (see FIG. 3) hits the nail.
- the front end side (right side in FIG. 1) of the nail driver 100 is defined as front or front
- the side opposite to the front end side of the nail driver 100 is defined as rear or rear.
- the connection side (upper side in FIG. 1) between the handle portion 103 and the driving mechanism housing portion 101A is up or above
- the connection side (lower side in FIG. 1) between the handle portion 103 and the motor housing portion 101C is down or down. Define.
- the nail driving mechanism 120 is accommodated in the driving mechanism accommodating portion 101 ⁇ / b> A of the main body housing 101.
- the nail driving mechanism 120 is mainly composed of a driving cylinder 121 and a driving piston 123.
- the driving cylinder 121 corresponds to the “second cylinder” in the present invention
- the driving piston 123 corresponds to the “second piston” in the present invention.
- a driving piston 123 for driving a nail is accommodated so as to be slidable in the front-rear direction.
- the driving piston 123 includes a piston main body 124 that is slidably disposed in the driving cylinder 121, and a long driver 125 that is provided integrally with the piston main body 124 and extends forward. .
- the driving piston 123 moves linearly in the long axis direction of the driving cylinder 121 by the compressed air supplied to the cylinder chamber 121a.
- the driver 125 moves forward in the driving passage 141 a provided in the driver guide 141 and drives the nail.
- the piston main body portion 124 corresponds to the “sliding portion” in the present invention
- the driver 125 corresponds to the “driving portion” in the present invention.
- the cylinder chamber 121 a is formed as a space surrounded by the inner wall surface of the driving cylinder 121 and the rear surface of the piston main body 124.
- the driver guide 141 is disposed at the tip of the driving cylinder 121 (right side in FIG. 3).
- the magazine 105 is a long rectangular member that accommodates nails.
- the magazine 105 is disposed on the front end side of the main body housing 101, that is, in front of the compression device housing portion 101 ⁇ / b> B, and is connected to the driver guide 141.
- the magazine 105 is provided with a pusher plate 105a for pushing the nail upward in FIG. 3, and the nail is supplied one by one to the driving passage 141a of the driver guide 141 by the pusher plate 105a.
- a compression device 130 is accommodated in the compression device accommodation portion 101 ⁇ / b> B of the main body housing 101.
- the compression device 130 is mainly composed of a compression cylinder 131 and a compression piston 133 that is slidably disposed in the compression cylinder 131 in the vertical direction.
- the compression cylinder 131 corresponds to the “first cylinder” in the present invention
- the compression piston 133 is an implementation configuration example corresponding to the “first piston” in the present invention.
- the compression cylinder 131 is arranged along the magazine 105 in parallel with the magazine 105. That is, the compression cylinder 131 is disposed along the long axis of the magazine 105, and the upper end side of the compression cylinder 131 is integrally connected to the front end portion of the driving cylinder 121.
- the compression piston 133 is arranged so as to slide in the vertical direction along the magazine 105, and the sliding direction of the compression piston 133 is substantially orthogonal to the sliding direction of the driving piston 123. As the compression piston 133 slides in the vertical direction, the volume of the compression chamber 131a inside the compression cylinder 131 changes, and the compression piston 133 moves upward to compress the air in the compression chamber 131a.
- the compression chamber 131 a is formed as a space surrounded by the inner wall surface of the compression cylinder 131 and the upper surface of the compression piston 133, and is disposed on the upper side close to the driving cylinder 121.
- an electric motor 111 (see FIG. 7) for driving the compression device 130 is accommodated in the motor accommodating portion 101 ⁇ / b> C of the main body housing 101.
- the electric motor 111 has a rotational axis arranged substantially parallel to the long axis of the driving cylinder 121. Therefore, the rotation axis of the electric motor 111 is orthogonal to the sliding direction of the compression piston 133.
- a battery mounting area is set on the lower side of the motor housing portion 101C, and a rechargeable battery pack 110 serving as a power source for the electric motor 111 is mounted in the battery mounting area.
- This battery pack 110 is an implementation configuration example corresponding to the “battery” in the present invention.
- Rotational motion of the electric motor 111 is decelerated by the planetary gear type reduction mechanism 113, converted into linear motion by a crank mechanism 115 as a motion conversion mechanism, and transmitted to the compression piston 133.
- a compression device mainly including the compression cylinder 131, the compression piston 133, and the crank mechanism 115 is configured as the compression device 130.
- the speed reduction mechanism 113 and the crank mechanism 115 are housed in an inner housing (also referred to as a gear housing) 102 disposed in the compression device housing portion 101B and the motor housing portion 101C.
- the crank mechanism 115 is mainly composed of a crankshaft 115a, an eccentric pin 115b, and a connecting rod 115c.
- the crankshaft 115a is rotated by a planetary gear type reduction mechanism 113.
- the eccentric pin 115b is provided at a position eccentric from the rotation center of the crankshaft 115a.
- One end of the connecting rod 115c is connected to the eccentric pin 115b so as to be relatively rotatable, and the other end of the connecting rod 115c is connected to the compression piston 133 so as to be relatively rotatable.
- the crank mechanism 115 is disposed below the compression cylinder 131.
- the electric motor 111 is controlled to be driven and stopped by a trigger 103 a provided in the handle portion 103 and a driver guide 141 as a contact arm provided in a tip region of the main body housing 101. That is, the handle 103 is provided with a trigger 103a that can be operated with fingers, and a trigger switch 103b (see FIG. 7) that can be switched between an on state and an off state by releasing the pulling operation and pulling operation of the trigger 103a. It has been.
- the trigger switch 103b When the trigger switch 103b is switched on, current is supplied to the electric motor 111 to drive it. On the other hand, when the trigger switch 103b is switched to the off state, the drive of the electric motor 111 is stopped.
- the trigger 103a is a substantially rectangular space S surrounded by the handle portion 103, the driving mechanism housing portion 101A, the compression device housing portion 101B, and the motor housing portion 101C of the main body housing 101, in other words, the driving cylinder 121 and the compression cylinder 131. It is arranged so as to protrude from the handle portion 103 toward the inside of the space surrounded by the handle portion 103 and the electric motor 111.
- the trigger 103a is an implementation configuration example corresponding to the “operation member” in the present invention.
- the driver guide 141 that also serves as a contact arm is provided so as to be movable in the nail driving direction, and is biased toward the front end side (front side) by a biasing spring 142 (see FIG. 8).
- the contact arm switch 143 (see FIG. 8) is switched off.
- the contact arm switch 143 is in the on state. Can be switched to.
- the electric motor 111 is driven when supplied with a current when both the trigger switch 103b and the contact arm switch 143 are switched on, and is driven when one or both of the switches are switched off. Stopped.
- the nailing machine 100 includes an air passage 135 that communicates a compression chamber 131 a (see FIG. 3) of the compression cylinder 131 and a cylinder chamber 121 a of the driving cylinder 121, and opens and closes the air passage 135.
- a valve 137 is provided.
- the air passage 135 corresponds to the “compressed air supply passage” in the present invention
- the valve 137 is an implementation configuration example corresponding to the “valve member” in the present invention.
- the nailing machine 100 is in a state where the driving piston 123 is moved to the rear end position (left side in FIG. 3) and the compression piston 133 is moved to the lower end position (bottom dead center). It is defined as the initial position. That is, the crank angle of 0 degrees is the bottom dead center and is defined as the initial state.
- the air passage 135 includes a communication port 135a on the compression cylinder 131 side, a communication port 135b on the driving cylinder 121 side, a communication passage 135c that connects the communication ports 135a and 135b to each other, and a valve housing space 135d. And an annular groove 135e formed on the peripheral surface of the valve housing space 135d.
- the communication port 135a is formed in the cylinder head 131b of the compression cylinder 131 and communicates with the compression chamber 131a. As shown in FIG.
- the communication port 135b is formed in the cylinder head 121b of the driving cylinder 121, and one end communicates with the communication passage 135c and the other end communicates with the annular groove 135e. That is, the communication port 135b communicates with the valve accommodating space 135d through the annular groove 135e.
- the communication path 135 c is formed by a pipe-like member, extends in the front-rear direction along the driving cylinder 121, one end communicates with the communication port 135 a, and the other end communicates with the communication port 135 b. Communicate.
- a valve 137 is disposed in the valve accommodating space 135d.
- the valve accommodating space 135d has an inner diameter substantially the same as that of the cylinder chamber 121a, and is formed in the cylinder head 121b so as to communicate with the cylinder chamber 121a.
- the valve 137 disposed in the valve accommodating space 135d is provided as a columnar member having substantially the same diameter as the piston main body 124 of the driving piston 123, and the driving line (movement line) of the driver 125 of the driving piston 123.
- the valve 137 moves in the front-rear direction to connect the compression chamber 131a and the cylinder chamber 121a or to block the communication. In other words, the valve 137 opens and closes the air passage 135.
- FIGS. 8 to 10 two O-rings 139 a and 139 b separated in the front-rear direction are provided on the outer periphery of the valve 137. Since the front O-ring 139a is positioned in front of the annular groove 135e and in contact with the inner wall surface of the valve accommodating space 135d, the communication between the compression chamber 131a and the cylinder chamber 121a is blocked. Further, the compression chamber 131a and the cylinder chamber 121a communicate with each other at a position where the O-ring 139a is moved away from the inner wall surface of the valve accommodating space 135d to the region of the annular groove 135e.
- FIG. 8 shows a closed state by the valve 137, and FIGS.
- valve 137 shows an open state by the valve 137.
- the rear O-ring 139b is provided to prevent compressed air from leaking from the communication port 135b, and is not involved in communication between the compression chamber 131a and the cylinder chamber 121a.
- the valve 137 is provided in a connection portion that connects to the cylinder chamber 121 a of the driving cylinder 121 in the air passage 135.
- the valve 137 is normally urged forward by a compression coil spring 138 so as to block communication between the compression chamber 131a and the cylinder chamber 121a.
- a stopper 136 is provided in front of the valve 137.
- the stopper 136 is formed by a flange-like member protruding in the inner diameter direction of the cylinder chamber 121a, and defines the rear end position of the driving piston 123 that moves rearward after the driving operation. Further, the stopper 136 defines the front end position of the valve 137 urged forward by the compression coil spring 138.
- valve 137 is configured as a mechanical valve controlled by a cylindrical cam 181 (see FIGS. 3 and 11) that rotates in conjunction with the crank mechanism 115.
- the rotational motion of the cylindrical cam 181 is converted into a linear motion in the front-rear direction by a link mechanism 185 as a relay member and transmitted to the valve 137.
- the cylindrical cam 181 is an end face cam in which a cam surface 181a is formed on one surface in the axial direction.
- the cylindrical cam 181 is attached to the crankshaft 115a so as to rotate integrally with the crankshaft 115a.
- the cam shape of the cam surface 181a is such that the valve 137 is moved backward to communicate the compression chamber 131a and the cylinder chamber 121a. Is set.
- the link mechanism 185 includes a first link 185a and a second link 185b.
- the first link 185 a is disposed so as to extend in the vertical direction along the outer surface of the compression cylinder 131.
- the first link 185a is supported on the inner housing 102 so as to be rotatable in the front-rear direction by a support shaft 186 at a substantially central portion in the vertical direction.
- the lower end part of the 1st link 185a is contact
- the second link 185 b is disposed so as to be movable in the front-rear direction along the outer surface of the driving cylinder 121. As shown in FIGS.
- one end portion (front end portion) of the second link 185b is connected to the upper end portion of the first link 185a by a pin 189 so as to be relatively rotatable.
- the other end (rear end) of the second link 185b is engaged with an annular engagement recess 137a formed on the outer periphery of the valve 137.
- the upper end portion of the first link 185a is rotated forward with the support shaft 186 as a rotation fulcrum, and the second link 185b moves forward, so that the valve 137 moves forward. Then, the communication between the compression chamber 131a and the cylinder chamber 121a is blocked (see FIG. 8).
- the upper end of the first link 185a is rotated rearward and the second link 185b is moved rearward, whereby the valve 137 is moved rearward and the compression chamber 131a and the cylinder chamber 121a communicate with each other (see FIG. 9).
- the urging force of the compression coil spring 138 that urges the valve 137 forward acts in the direction of pressing the cam follower 187 against the cam surface 181a of the cylindrical cam 181.
- the driver guide 141 in the initial state shown in FIG. 3, the driver guide 141 is pressed against the workpiece, the contact arm switch 143 (see FIG. 8) is turned on, and the trigger
- the trigger switch 103b (see FIG. 7) is switched to the ON state by pulling operation 103a
- the electric motor 111 is energized and driven.
- the crank mechanism 115 is driven via the speed reduction mechanism 113, and the compression piston 133 is moved upward.
- the valve 137 blocks communication between the compression chamber 131a and the cylinder chamber 121a, so that the air in the compression chamber 131a is compressed.
- the valve 137 is moved rearward via the cylindrical cam 181 and the link mechanism 185, and compressed.
- the chamber 131a and the cylinder chamber 121a communicate with each other.
- the compressed air in the compression chamber 131a is supplied into the cylinder chamber 121a, so that the valve 137 is moved to the rear end position as shown in FIG.
- the driving piston 123 is moved forward by the compressed air supplied into the cylinder chamber 121a. Then, the driver 125 of the driving piston 123 moved forward hits the nail disposed in the driving passage 141a of the driver guide 141 and drives it into the workpiece.
- the compression piston 133 moves downward after the compression operation. At this time, the volume of the compression chamber 131a is increased and the pressure in the compression chamber 131a is reduced. The pressure in the compression chamber 131a is applied to the piston 123 through the air passage 135 and the cylinder chamber 121a. As a result, as shown in FIG. 10, the driving piston 123 is sucked and moved backward, comes into contact with the stopper 136, and returns to the initial position.
- the valve 137 maintains the communication between the compression chamber 131a and the cylinder chamber 121a until the driving piston 123 returns to the initial position, but when the compression piston 133 approaches the bottom dead center as the initial position, the compression coil spring It is moved forward by the urging force of 138 to block the communication between the compression chamber 131a and the cylinder chamber 121a.
- the compression piston 133 returns to the initial position, even if the trigger switch 103b and the contact arm switch 143 are kept on, the supply of current to the electric motor 111 is cut off and the driving of the electric motor 111 is stopped. . As described above, one cycle of the nail driving operation is completed.
- the compression cylinder 131 and the compression piston 133 constituting the compression device 130 are arranged along the magazine 105. That is, the compression device 130 is disposed on the front side of the nailing machine 100 to prevent the compression device 130 from projecting to the rear side of the nailing machine 100. As a result, the length of the nail driver 100 in the front-rear direction, that is, the total length of the nail driver 100 is shortened, and thereby the nailer 100 is made compact.
- the compression device 130 is arranged on the front side, the degree of freedom increases in the arrangement configuration of the handle portion 103 arranged on the rear side of the driving cylinder 121. That is, the handle portion 103 is disposed so as to approach the driving line of the driver 125. Therefore, the reaction force generated when the driver 125 drives the nail is easily suppressed by the operator's hand. Furthermore, the operator can efficiently apply a pressing force to the workpiece. Similarly, the trigger 103 a disposed in the handle portion 103 can be disposed close to the driving cylinder 121. Therefore, the operability of the trigger 103a is improved.
- the magazine 105 and the compression cylinder 131 are arranged adjacent to each other, a rational arrangement without dead space is possible.
- the magazine 105 and the compression cylinder 131 are preferably arranged in parallel to each other. Therefore, for example, in the nailing machine 100 in which the magazine 105 is inclined with respect to the driving line of the driver 125, the compression cylinder 131 is also inclined.
- the compression chamber 131a of the compression cylinder 131 and the cylinder chamber 121a of the driving cylinder 121 are connected by the communication path 135c.
- the cylindrical member constituting the communication path 135c is disposed along the driving cylinder 121, so that the cylindrical member is prevented from interfering with other constituent members.
- the cylindrical member may be formed of a hard material, or may be formed of a flexible material that can be arbitrarily bent during assembly.
- the valve 137 is arranged on the connection side with the cylinder chamber 121a in the air passage 135 connecting the cylinder chamber 131a of the compression cylinder 131 and the cylinder chamber 121a of the driving cylinder 121.
- the air passage 135 constitutes a part of the compression chamber 131a. Therefore, when compressed air is supplied to the cylinder chamber 121a of the driving cylinder 121, expansion of the compressed air is suppressed. That is, the energy loss of compressed air is reduced. As a result, an energy-efficient driving operation is performed.
- the compression cylinder 131, the driving cylinder 121, the handle portion 103, and the electric motor 111 are arranged so as to form a substantially square shape and are connected to each other. It becomes possible to raise. Therefore, damage to the nailing machine 100 is suppressed against external force.
- the electric motor 111 and the battery pack 110 are arranged on the lower end side of the handle portion 103.
- the weight ratio of the electric motor 111 and the battery pack 110 arranged on the lower end side of the handle portion 103 with respect to the driving cylinder 121 connected to the upper end side of the handle portion 103 is set to approximately 1, the nailing machine 100 The center of gravity is set at a substantially intermediate position of the handle portion 103, whereby the operability of the nailer 100 is improved.
- the cylindrical cam 181 is formed as an end face cam, but it may be changed to a cylindrical groove cam having a groove on the outer peripheral surface.
- the valve 137 is configured as a mechanical valve controlled by the cylindrical cam 181, but is not limited thereto.
- an electrically controllable solenoid valve 145 as shown in FIG. 12 may be used.
- the solenoid valve 145 mainly includes a valve main body 145A that can move in the front-rear direction and an electromagnet 145B that moves the valve main body 145A. Then, for example, when the compressed air in the compression chamber 131a is in the maximum compression state, the electromagnet 145B moves the valve body 145A rearward to connect the compression chamber 131a and the cylinder chamber 121a.
- the electromagnet 145B includes, for example, a position sensor that detects the rotational position of the crankshaft 115a of the crank mechanism 115 that drives the compression piston 133, and is controlled by the controller based on the rotational position of the crankshaft 115a from the position sensor.
- nailing machine 100 as an example as a driving tool
- driving tools called a tucker other than a nailing machine, and a stapler.
- the driving tool can be configured in the following manner.
- (Aspect 1) “It is a driving tool for driving the workpiece, A first cylinder; A first piston that is slidably disposed in the first cylinder and generates compressed air in the first cylinder; A motor for driving the first piston; A second cylinder; A second piston that is slidably disposed in the second cylinder and includes a sliding portion and an elongated driving portion connected to the sliding portion; A handle, A magazine configured to supply a material to be driven onto an operation line of the driving portion, The compressed air in the first cylinder is supplied into the second cylinder, and the second piston is moved linearly toward the distal end side of the second cylinder by the compressed air, so that the driving portion is covered.
- the first cylinder is disposed so as to intersect the long axis of the second cylinder, and is disposed along the long axis of the magazine.
- the first piston is configured to slide in a direction along the long axis of the magazine,
- the driving tool according to claim 1, wherein the handle is disposed on the opposite side of the magazine of the first cylinder with respect to a direction in which an operation line of the driving unit extends.
- the above embodiment shows an example for carrying out the present invention. Therefore, the present invention is not limited to the configuration of the embodiment.
- the correspondence relationship between each component of the embodiment and each component of the present invention is shown below.
- the nailing machine 100 is an example of a configuration corresponding to the “driving tool” of the present invention.
- the handle portion 103 is an example of a configuration corresponding to the “handle” of the present invention.
- the trigger 103a is an example of a configuration corresponding to the “operation member” of the present invention.
- the magazine 105 is an example of a configuration corresponding to the “magazine” of the present invention.
- the battery pack 110 is an example of a configuration corresponding to the “battery” of the present invention.
- the electric motor 111 is an example of a configuration corresponding to the “motor” of the present invention.
- the driving cylinder 121 is an example of a configuration corresponding to the “second cylinder” of the present invention.
- the driving piston 123 is an example of a configuration corresponding to the “second piston” of the present invention.
- the piston main body 124 is an example of a configuration corresponding to the “sliding portion” of the present invention.
- the driver 125 is an example of a configuration corresponding to the “driving unit” of the present invention.
- the compression cylinder 131 is an example of a configuration corresponding to the “first cylinder” of the present invention.
- the compression piston 133 is an example of a configuration corresponding to the “first piston” of the present invention.
- the air passage 135 is an example of a configuration corresponding to the “compressed air supply passage” of the present invention.
- the valve 137 is an example of a configuration corresponding to the “valve member” of the present invention.
Abstract
Description
本発明に係る打込み工具の更なる形態によれば、第1シリンダと第2シリンダとハンドルとモータは、四角形の各辺を構成することで、当該四角形を形成するように配置されている。本形態によれば、打込み工具に対して作用する外力に対する強度が高くなる。
本発明の他の特質、作用および効果については、本明細書、特許請求の範囲、添付図面を参照することで直ちに理解可能である。
以下、実施形態につき、図1~図11を参照して説明する。本実施形態は、打込み工具の一例として電気-空圧式釘打機を用いて説明する。図1及び図2に示すように、釘打機100は、概括的に見て、釘打機の100の外郭を形成する工具本体としての本体ハウジング101と、被加工材に打ち込まれる被打込材としての釘(図示省略)が収容されるマガジン105とを主体として構成される。本体ハウジング101は、ほぼ対称形の1対のハウジングを合わせて結合されている。本体ハウジング101は、作業者が握るハンドル部103、釘打込み機構120(図3参照)を収容するための打込み機構収容部101A、圧縮装置130(図3参照)を収容するための圧縮装置収容部101B及び電動モータ111(図7参照)を収容するためのモータ収容部101Cを一体に備えている。
(態様1)
「被打込材の打込み作業を行う打込み工具であって、
第1シリンダと、
前記第1シリンダ内を摺動可能に配置され、当該第1シリンダ内に圧縮空気を生成する第1ピストンと、
前記第1ピストンを駆動するモータと、
第2シリンダと、
前記第2シリンダ内を摺動可能に配置され、摺動部及び当該摺動部に連接される長尺状の打込み部を備えた第2ピストンと、
ハンドルと、
被打込材を前記打込み部の動作線上に供給するように構成されたマガジンと、を有し、
前記第1シリンダ内の圧縮空気を前記第2シリンダ内へ供給し、当該圧縮空気によって前記第2ピストンを前記第2シリンダの先端側に向けて直線状に移動させることで、前記打込み部が被打込材を打ち込むように構成されており、
前記第1シリンダは、前記第2シリンダの長軸に交差するように配置されるとともに、前記マガジンの長軸に沿うように配置されており、
前記第1ピストンは、前記マガジンの長軸に沿う方向に摺動するように構成されており、
前記ハンドルは、前記打込み部の動作線が延在する方向に関して、前記第1シリンダの前記マガジンとは反対側に配置されていることを特徴とする打込み工具。」
「請求項1または態様1に記載の打込み工具であって、
前記第1シリンダは、前記マガジンと平行に配置されていることを特徴とする打込み工具。」
以上の実施形態は、本発明を実施するための形態の一例を示すものである。したがって、本発明は、実施形態の構成に限定されるものではない。なお、実施形態の各構成要素と本発明の各構成要素の対応関係を以下に示す。
釘打機100は、本発明の「打込み工具」に対応する構成の一例である。
ハンドル部103は、本発明の「ハンドル」に対応する構成の一例である。
トリガ103aは、本発明の「操作部材」に対応する構成の一例である。
マガジン105は、本発明の「マガジン」に対応する構成の一例である。
バッテリパック110は、本発明の「バッテリ」に対応する構成の一例である。
電動モータ111は、本発明の「モータ」に対応する構成の一例である。
打込みシリンダ121は、本発明の「第2シリンダ」に対応する構成の一例である。
打込みピストン123は、本発明の「第2ピストン」に対応する構成の一例である。
ピストン本体部124は、本発明の「摺動部」に対応する構成の一例である。
ドライバ125は、本発明の「打込み部」に対応する構成の一例である。
圧縮シリンダ131は、本発明の「第1シリンダ」に対応する構成の一例である。
圧縮ピストン133は、本発明の「第1ピストン」に対応する構成の一例である。
空気通路135は、本発明の「圧縮空気供給通路」に対応する構成の一例である。
バルブ137は、本発明の「弁部材」に対応する構成の一例である。
101 本体ハウジング
101A 打込み機構収容部
101B 圧縮装置収容部
101C モータ収容部
102 内側ハウジング
103 ハンドル部
103a トリガ
103b トリガスイッチ
105 マガジン
105a プッシャプレート
110 バッテリパック
111 電動モータ
113 遊星歯車式減速機構
115 クランク機構
115a クランク軸
115b 偏心ピン
115c 連接ロッド
120 釘打込み機構
121 打込みシリンダ
121a シリンダ室
121b シリンダヘッド
135e 環状溝
123 打込みピストン
124 ピストン本体部
125 ドライバ
130 圧縮装置
131 圧縮シリンダ
131a 圧縮室
131b シリンダヘッド
133 圧縮ピストン
135 空気通路
135a 連通ポート
135b 連通ポート
135c 連通路
136 ストッパ
137 バルブ
137a 係合凹部
138 圧縮コイルばね
139a,139b Oリング
141 ドライバガイド
141a 打込み通路
142 付勢ばね
143 コンタクトアームスイッチ
145 ソレノイドバルブ
145A バルブ本体
145B 電磁石
181 円筒カム
181a カム面
185 リンク機構
185a 第1リンク
185b 第2リンク
186 支軸
187 カムフォロワー
189 ピン
S 空間
Claims (10)
- 被打込材の打込み作業を行う打込み工具であって、
第1シリンダと、
前記第1シリンダ内を摺動可能に配置され、当該第1シリンダ内に圧縮空気を生成するように構成された第1ピストンと、
前記第1ピストンを駆動するモータと、
第2シリンダと、
前記第2シリンダ内を摺動可能に配置され、摺動部及び当該摺動部に連接された長尺状の打込み部を備えた第2ピストンと、
ハンドルと、
被打込材を前記打込み部の動作線上に供給するように構成されたマガジンと、を有し、
前記第1シリンダ内の圧縮空気を前記第2シリンダ内へ供給し、当該圧縮空気によって前記第2ピストンを前記第2シリンダの先端側に向けて直線状に移動させることで、前記打込み部が被打込材を打込むように構成されており、
前記第1シリンダは、前記第2シリンダに交差するように配置されるとともに、前記マガジンに沿うように配置されており、
前記第1ピストンは、前記マガジンに沿う方向に摺動するように構成されており、
前記ハンドルは、前記打込み部の動作線が延在する方向に関して、前記第1シリンダの前記マガジンとは反対側に配置されていることを特徴とする打込み工具。 - 請求項1に記載の打込み工具であって、
前記マガジンと前記第1シリンダは、前記第2シリンダの先端側に配置され、
前記ハンドルは、前記第2シリンダの先端側とは反対の後端側に配置されていることを特徴とする打込み工具。 - 請求項1又は2に記載の打込み工具であって、
前記マガジンと前記第1シリンダは、隣接して配置されていることを特徴とする打込み工具。 - 請求項1~3のいずれか1項に記載の打込み工具であって、
前記第1シリンダと前記第2シリンダを連通する圧縮空気供給通路と、前記圧縮空気供給通路に設けられ、前記第1シリンダと前記第2シリンダを連通し、当該連通を遮断する弁部材と、を有し、
前記弁部材は、前記圧縮空気供給通路のうち前記第2シリンダと接続する接続部に配置されていることを特徴とする打込み工具。 - 請求項4に記載の打込み工具であって、
前記圧縮空気供給通路は、前記第2シリンダの長軸に沿って設けられていることを特徴とする打込み工具。 - 請求項1~5のいずれか1項に記載の打込み工具であって、
前記マガジンと前記第1シリンダは、互いに平行に配置されていることを特徴とする打込み工具。 - 請求項1~6のいずれか1項に記載の打込み工具であって、
前記モータの回転軸が前記第2シリンダの長軸に平行に配置されていることを特徴とする打込み工具。 - 請求項1~7のいずれか1項に記載の打込み工具であって、
前記モータを制御するために作業者によって手動で操作される操作部材を有し、
前記第1シリンダと前記第2シリンダと前記ハンドルと前記モータは、前記第1シリンダと前記第2シリンダと前記ハンドルと前記モータとで囲まれる空間を形成するように配置されており、
前記操作部材は、前記空間に向かって突出して配置されていることを特徴とする打込み工具。 - 請求項1~8のいずれか1項に記載の打込み工具であって、
前記第1シリンダと前記第2シリンダと前記ハンドルと前記モータは、四角形の各辺を構成することで、当該四角形を形成するように配置されていることを特徴とする打込み工具。 - 請求項1~9のいずれか1項に記載の打込み工具であって、
前記ハンドルの一方の端部は、前記第2シリンダに連接されており、
前記ハンドルは、当該第2シリンダの長軸方向と交差する交差方向に延在するように配置されており、
前記交差方向に関して、前記ハンドルの他方の端部側に前記モータ及び当該モータに電力を供給するバッテリが配置されていることを特徴とする打込み工具。
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- 2013-04-04 DE DE112013001960.4T patent/DE112013001960B4/de active Active
- 2013-04-04 US US14/391,263 patent/US9844865B2/en active Active
- 2013-04-04 WO PCT/JP2013/060375 patent/WO2013154032A1/ja active Application Filing
Patent Citations (3)
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JPS63229274A (ja) * | 1987-03-14 | 1988-09-26 | 松下電工株式会社 | 釘打ち機 |
JPH01115579A (ja) * | 1987-10-27 | 1989-05-08 | Matsushita Electric Works Ltd | 打込機 |
US20080190988A1 (en) * | 2007-02-09 | 2008-08-14 | Christopher Pedicini | Fastener Driving Apparatus |
Cited By (1)
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JP2015116616A (ja) * | 2013-12-16 | 2015-06-25 | 株式会社マキタ | 打込み工具 |
Also Published As
Publication number | Publication date |
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US9844865B2 (en) | 2017-12-19 |
US20150174748A1 (en) | 2015-06-25 |
DE112013001960B4 (de) | 2020-03-19 |
JP2013215840A (ja) | 2013-10-24 |
JP5800748B2 (ja) | 2015-10-28 |
DE112013001960T5 (de) | 2015-01-15 |
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