Electric driving tool

Abstract

To provide an electric driving tool comprising such a structure that reliably moves a regulation member from an open position to a closed position.SOLUTION: A driving tool 10 has a nose part 2 in which a driving passage is formed. A contact arm 11 is movably provided at a tip of the nose part 2. The contact arm 11 moves between an OFF position and an ON position. A driver 1d strikes a striking tool n set in the driving passage. A shutter 7 moves between a closed position positioned on a movement path of the driver 1d and an open position where the driver 1d is allowed to move by retreating from the movement path. A connecting rod 8 connects the contact arm 11 and the nose part 2. The connecting rod 8 moves the shutter 7 from the open position to the closed position in linkage with movement of the contact arm 11 from the ON position to the OFF position.SELECTED DRAWING: Figure 7

Description

[Technical field]

[0001] The present disclosure relates to an electric driving tool for driving nails, staples, or other fasteners into wood or the like. [Background technology]

[0002] The electric driving tool of Patent Document 1 has a restricting member located between the driver and the driving tool to block the driving operation of the driver. The restricting member is attached to the tool body rotatably around a pivot pin and is biased to a blocking position by a torsion spring. A contact arm is provided at the tip of the driving tool. By pressing the contact arm against the workpiece, the contact arm moves from the OFF position to the ON position. In conjunction with the contact arm, the restricting member moves from the blocking position to an open position that allows the driving operation of the driver. When the contact arm is released from the workpiece, the contact arm moves from the ON position to the OFF position by the spring. The restricting member moves from the open position to the blocking position by the torsion spring. However, if a malfunction occurs in the torsion spring, there is a concern that the restricting member will not return from the open position to the blocking position. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 6928457 Summary of the Invention [Problem to be solved by the invention]

[0004] Therefore, there has been a need for an electric driving tool having a structure for reliably moving the restricting member from the open position to the closed position. [Means for solving the problem]

[0005] According to one aspect of the present disclosure, an electric driving tool has a nose portion in which a driving passage is formed. A contact arm is movably provided at the tip of the nose portion. The contact arm moves between an OFF position protruding from the nose portion and an ON position closer to the nose portion than the OFF position. A driver strikes a driving tool set in the driving passage. The restricting member moves between a blocking position located on the movement path of the driver and an open position retracted from the movement path to allow movement of the driver. A connecting member connects the contact arm and the restricting member. The connecting member moves the restricting member from the blocking position to the open position in conjunction with the movement of the contact arm from the OFF position to the ON position. Furthermore, the connecting member moves the restricting member from the open position to the blocking position in conjunction with the movement of the contact arm from the ON position to the OFF position.

[0006] Therefore, the movement of the contact arm in both directions is linked to the movement of the restricting member in both directions by the connecting member, so that the restricting member reliably moves to the open position or the cut-off position in response to the movement of the contact arm. [Brief description of the drawings]

[0007] [Figure 1] FIG. [Diagram 2] FIG. 2 is a schematic vertical sectional view of a driving tool. [Diagram 3] FIG. 2 is a cross-sectional view taken along line III-III in FIG. [Figure 4] FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. [Diagram 5] FIG. 2 is a perspective view of a portion of the lifter and driver. [Figure 6] FIG. 2 is a view taken along the arrow VI in FIG. [Figure 7] FIG. 4 is an exploded perspective view showing a connection structure between a contact arm and a shutter. [Figure 8] FIG. 11 is a partial vertical cross-sectional view of the driving tool in a state where the contact arm has been moved to an ON position. [Figure 9] 5 is a view corresponding to FIG. 4 in a state where the driver has struck the driving tool. FIG. [Figure 10] 5 is a view corresponding to FIG. 4 in a state in which the lifter lifts the driver. [Figure 11] 5 is a view corresponding to FIG. 4 in a state where the lower end of the driver is positioned above the set position. [Figure 12] 1 is a partial cross-sectional view of the XII portion of FIG. 2. [Figure 13] 13 is a view corresponding to FIG. 12 in a state in which the feed pawl of FIG. 2 is being returned in the counter-feed direction. [Figure 14] 13 is an enlarged view showing a state in which the shutter blocks an impact from a driver. [Figure 15] 15 is a cross-sectional view taken along line XV-XV in FIG. 14. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] According to another aspect of the present disclosure, the connecting member has a first end rotatably connected to the contact arm and a second end rotatably connected to the restricting member, whereby the movement of the contact arm can be smoothly transmitted to the restricting member via the connecting member.

[0009] According to another aspect of the present disclosure, the restricting member moves in a direction different from the movement direction of the contact arm between the on position and the off position. Therefore, the restricting member can be moved in a preferred direction. For example, even if the movement direction of the contact arm is set to a striking direction that makes it easy to press the contact arm against a workpiece and operate it, the restricting member moves in a direction different from the striking direction and is likely to block the driving passage.

[0010] According to another aspect of the present disclosure, the restricting member moves in a direction perpendicular to the impact direction of the driver. This allows the installation space of the restricting member in the impact direction to be reduced. For example, the installation space of the restricting member in the impact direction can be reduced compared to when the restricting member moves in the impact direction. Furthermore, the strength of the restricting member can be ensured by providing the restricting member with a thickness along the impact direction.

[0011] According to another aspect of the present disclosure, the nose portion has a guide hole perpendicular to the striking direction of the driver. The restricting member is inserted into the guide hole and slides along the guide hole. Therefore, the restricting member can be easily assembled to the nose portion by the guide hole. Furthermore, the restricting member can be moved smoothly by the guide hole.

[0012] According to another aspect of the present disclosure, the restricting member has a wide portion formed wider than the width of the driver. When the driver moves in the striking direction and hits the restricting member, the wide portion is supported by the downstream receiving surface of the guide hole in the striking direction. Therefore, the load of the driver can be distributed and transmitted to the downstream receiving surface of the guide hole. This allows the driver's strike to be supported by the restricting member and the downstream receiving surface of the guide hole.

[0013] According to another aspect of the present disclosure, when the driver moves in the striking direction and hits the regulating member, the regulating member is supported by cooperation between the upstream receiving surface and the downstream receiving surface of the guide hole in the striking direction. For example, when the regulating member is struck by the driver and inclined, the regulating member is supported in a sandwiched state between the upstream receiving surface and the downstream receiving surface. Therefore, the strike of the driver can be supported by the regulating member and the upstream receiving surface and the downstream receiving surface of the guide hole.

[0014] According to another aspect of the present disclosure, the driver is positioned on the width center line of the restricting member when viewed from the striking direction of the driver. The connecting member is also positioned on the width center line of the restricting member. This allows the restricting member to support the driver without tilting to one side in the width direction when the driver hits the restricting member.

[0015] According to another aspect of the present disclosure, an electric driving tool has a nose portion in which a driving passage is formed. A contact arm is movably provided at the tip of the nose portion. The contact arm moves between an off position protruding from the nose portion and an on position closer to the nose portion than the off position. A driver strikes a driving tool set in the driving passage. A restricting member is movably provided at the nose portion in a direction perpendicular to the striking direction of the driver. The restricting member moves between a blocking position located on the movement path of the driver and an open position retracted from the movement path to allow movement of the driver. Thus, the restricting member moves in a direction perpendicular to the striking direction. This makes it possible to reduce the installation space for the restricting member in the striking direction.

[0016] According to another aspect of the present disclosure, the driver is a nail coupled to a spirally wound connector, thus allowing the driver to be mounted in a compact package.

[0017] Next, one embodiment of the present disclosure will be described with reference to Figs. 1 to 15. As shown in Fig. 1, the driving tool 10 is of a gas spring type that drives the driving tool n using, for example, gas pressure. In the following description, the driving direction of the driving tool n is defined as a downward direction, and the opposite driving direction is defined as an upward direction. A user holds the driving tool 10 in his / her hand and is positioned on the left side in Fig. 1. The side in front of the user is defined as the rear direction (user side), and the far side is defined as the front direction. The left and right directions are defined based on the user.

[0018] As shown in Figs. 1 and 2, a driving tool 10 has a tool body 1. The tool body 1 has a configuration in which a cylinder 1c is accommodated in a roughly cylindrical main body housing 1a. A piston 1b is accommodated in the cylinder 1c so that it can reciprocate up and down. An upper part of the cylinder 1c above the piston 1b is connected to a pressure accumulator chamber 1f. A compressed gas such as air is sealed in the pressure accumulator chamber 1f. The gas pressure in the pressure accumulator chamber 1f acts as a thrust force that moves the piston 1b downward (forward in the driving direction).

[0019] As shown in FIG. 1, a metal nose portion 2 is provided at the bottom of the tool body 1. As shown in FIG. 2, a driving passage 2a is formed inside the nose portion 2. The upper end of the driving passage 2a communicates with the lower portion of the cylinder 1c. The nose portion 2 has a plate-shaped passage member 2c that protrudes obliquely upward toward the rear. The passage member 2c is made of a single member that is integrated with the nose portion 2. The passage member 2c guides the movement of the connected driving tool N. The connected driving tool N has a large number of driving tools n. The large number of driving tools n are temporarily connected in parallel by a flexible member such as a resin sheet material or a wire. The connected driving tools N are loaded into the magazine 16 in a spirally wound state. Each driving tool n is guided by the passage member 2c in a position extended up and down, and is supplied one by one to the driving passage 2a. A contact arm 11 that can slide up and down is provided at the bottom of the nose portion 2. The contact arm 11 is biased so as to move downward relative to the nose portion 2 (OFF position). The contact arm 11 is pressed against the workpiece W to move upward along the nose portion 2 (ON position).

[0020] As shown in FIG. 1, a grip 12 is provided at the rear of the tool body 1 to be held by the user. An operating unit 13 is provided at the front underside of the grip 12, which is operated by the user by pulling it with his / her fingertips. The operating unit 13 enables a pulling operation by moving the contact arm 11 upward relative to the nose portion 2. A signal is sent to a control unit 17 by the pulling operation. The control unit 17 operates a drive unit 4, which will be described later, based on the sent signal. A battery attachment unit 14 is provided at the rear of the grip 12. A battery pack 15 can be removably attached to the rear surface of the battery attachment unit 14. The battery pack 15 can be removed from the battery attachment unit 14 and repeatedly charged with a separately prepared charger for use. The battery pack 15 operates as a power source that supplies power to the drive unit 4.

[0021] As shown in FIG. 2, a vertically long driver 1d is coupled to the underside of the piston 1b. The lower part of the driver 1d enters the driving passage 2a. The driver 1d moves downward in the driving passage 2a due to the gas pressure in the pressure accumulator chamber 1f acting on the upper surface of the piston 1b. The lower end of the driver 1d strikes a single driving tool n supplied into the driving passage 2a. The struck driving tool n is ejected from the ejection port 2b of the nose portion 2. The ejected driving tool n is driven into the workpiece W. A damper 1g is disposed at the bottom of the cylinder 1c to absorb the impact at the lower moving end of the piston 1b. The damper 1g is formed of, for example, a rubber material.

[0022] As shown in FIG. 7, the nose portion 2 has a rectangular guide hole 2d penetrating in the front-rear direction. The shutter 7 is inserted along the guide hole 2d so as to be slidable in the front-rear direction. The shutter 7 moves between a blocking position between the driver 1d and the driving tool n set in the driving passage 2a and an open position that opens the gap between them. As shown in FIG. 2, the shutter 7 in the blocking position blocks the movement of the driver 1d. As shown in FIG. 8, the shutter 7 in the open position allows the movement of the driver 1d. The shutter 7 slides in the front-rear direction perpendicular to the striking direction of the driver 1d, thereby reducing the installation space in the striking direction. The strength of the shutter 7 can be increased by the thickness of the shutter 7 in the striking direction.

[0023] As shown in FIG. 7, the rear part 8b of the connecting rod 8 is rotatably connected to the shutter 7 via a rotating shaft 8d. The front part 8a of the connecting rod 8 is rotatably connected to the connecting bracket 18 via a rotating shaft 8c. The connecting bracket 18 is integrally connected to the contact arm 11 via a connecting bolt 11a. The above connection allows the shutter 7 to slide in the front-rear direction in conjunction with the up-down movement of the contact arm 11. When the contact arm 11 is in the OFF position where it moves downward relative to the nose part 2 as shown in FIG. 2, the shutter 7 moves to the blocking position. When the contact arm 11 is in the ON position where it moves upward relative to the nose part 2 as shown in FIG. 8, the shutter 7 moves to the open position. Therefore, even if the driver 1d moves downward while the contact arm 11 is in the OFF position due to a malfunction of the drive part 4 or other problem, the shutter 7 can suppress the driving of the driving tool n. Note that if the contact arm 11 tries to return to the OFF position between the end of the driving of the driving tool n and the time when the driver 1d rises, the shutter 7 also tries to return to the blocking position in conjunction with it. As a result, the shutter 7 hits the driver 1d and stops. The shutter 7 returns to the blocking position after the driver 1d finishes ascending. The shutter 7 is designed not to impede the ascending of the driver 1d.

[0024] FIG. 14 shows a state in which the shutter 7 in the blocking position blocks the movement of the driver 1d. The driver 1d collides with the rear of the shutter 7 and stops. As a result, the shutter 7 receives an external force such that the rear part moves downward and the front part moves upward around the shaft hole 7a. The rear part of the shutter 7 is supported by the downstream receiving surface 2f of the guide hole 2d. The front part of the shutter 7 is supported by the upstream receiving surface 2g of the guide hole 2d. In this way, the shutter 7 is supported in a sandwiched manner by the upstream receiving surface 2g and the downstream receiving surface 2f of the guide hole 2d, so that the impact of the driver 1d can be stably supported. As shown in FIG. 15, the shutter 7 has wide portions 7b formed on both the left and right sides wider than the width of the driver 1d in the left and right direction. Each wide portion 7b is also supported in a sandwiched manner by the upstream receiving surface 2g and the downstream receiving surface 2f of the guide hole 2d. The center line of the width of the driver 1d in the left and right direction coincides with the center line of the width of the shutter 7 in the left and right direction. The width center line of the connecting rod 8 in the left-right direction also coincides with the width center line of the shutter 7 in the left-right direction. Therefore, when the driver 1d hits the shutter 7, the shutter 7 can support the driver 1d without tilting to one side in the left-right direction.

[0025] As shown in FIG. 4, a rack 1e is provided on the right side of the driver 1d. The rack 1e has a plurality of (for example, seven) convex engaged parts L that protrude toward the wheel 3a (right side). The engaged parts L are arranged at regular intervals in the longitudinal direction (up-down direction) of the driver 1d. Hereinafter, the engaged parts L are also referred to as the first engaged part L1, the second engaged part L2, the seventh engaged part L7, in order from the top. Each engaged part L engages with the lifter 3. The lifter 3 returns the driver 1d together with the piston 1b upward after the driver 1d strikes. This causes the piston 1b to increase the gas pressure in the pressure accumulation chamber 1f. As shown in FIG. 2, a drive unit 4 for operating the lifter 3 is provided in parallel at the rear of the lifter 3. The lifter 3 and the drive unit 4 are housed in a substantially cylindrical drive unit case 1h. The drive unit case 1h connects the lower part of the main body housing 1a and the lower part of the battery mounting part 14 to each other. The drive unit case 1h is provided integrally with the main body housing 1a.

[0026] As shown in FIG. 3, the drive unit 4 has a motor 4a as a drive source. The motor 4a is housed in a position in which the axis of the output shaft 4b (motor axis J) is aligned in the front-rear direction perpendicular to the driving direction (perpendicular to the paper surface in FIG. 3). The output shaft 4b is rotatably supported by the drive unit case 1h via a bearing 4c. The front part of the output shaft 4b is connected to the reduction unit 4d. The reduction unit 4d uses a three-row planetary gear train 4e. The planetary gear trains 4e are arranged coaxially with each other and with the motor axis J. The rotation output of the motor 4a is reduced in speed by the reduction unit 4d and output to the lifter 3.

[0027] As shown in FIG. 3, the lifter 3 has a rotating shaft 3c connected to the reduction gear unit 4d and a wheel 3a supported by the rotating shaft 3c. The lifter 3 is housed in a substantially cylindrical mechanism case 3b housed in the drive unit case 1h. The axis of the rotating shaft 3c coincides with the motor axis J. The front part of the mechanism case 3b is closed by a lid part 3e. The front end of the rotating shaft 3c is rotatably supported by a bearing 3d held in the mechanism case 3b via the lid part 3e. The rear end of the rotating shaft 3c is coupled to a carrier 4f of the reduction gear unit 4d. The carrier 4f of the reduction gear unit 4d is rotatably supported by the mechanism case 3b via a bearing 3d provided on the outer periphery.

[0028] As shown in FIG. 4, when the motor 4a is started, the rotating shaft 3c and the wheel 3a rotate together in the direction of the arrow R (counterclockwise in FIG. 4). The wheel 3a is configured to rotate only in the direction of the arrow R. As shown in FIG. 5, the lifter 3 has two opposing wheels 3a. A plurality of engagement pins P are arranged between the wheels 3a. As shown in FIG. 4, the plurality of engagement pins P are arranged at regular intervals along the outer periphery of the wheel 3a. The engagement pins P are also referred to as the first engagement pin P1, the second engagement pin P2, to the seventh engagement pin P7, in order from the front side in the rotation direction of the wheel 3a.

[0029] As shown in FIG. 4, the lifter 3 is provided with a position detection sensor 6 that detects the position of the lifter 3. The position detection sensor 6 has two magnets 6b, 6c and a Hall IC 6a that detects the magnetism of each of the magnets 6b, 6c. Each of the magnets 6b, 6c is provided on the outer periphery of the wheel 3a along the rotation direction of the wheel 3a. The Hall IC 6a is provided in the mechanism case 3b. When the Hall IC 6a detects the magnetism of each of the magnets 6b, 6c, it sends a signal to the control unit 17. This allows the control unit 17 to determine the rotational position of the wheel 3a.

[0030] FIG. 4 shows the state where the driver 1d is returned upward by the lifter 3 and set to the standby position. The driving tool n located at the front of the connected driving tools N is set in the driving passage 2a. The seventh engagement pin (final engagement pin) P7 of the lifter 3 is engaged with the seventh engaged part (final engaged part) L7 of the rack 1e. This causes the driver 1d to be held in the standby position against the gas pressure in the pressure accumulator chamber 1f. At this time, the first magnet 6b is positioned so as to face the Hall IC 6a. This causes the control unit 17 to determine that the driver 1d is in the standby position.

[0031] As shown in Fig. 8, when using the driving tool 10, the user first grasps the grip 12 and presses the contact arm 11 against the workpiece W to be driven. This causes the contact arm 11 to move upward relative to the nose portion 2, enabling the pulling operation of the operating portion 13 to be enabled. Furthermore, the shutter 7 slides in conjunction with the contact arm 11 to an open position that allows the driver 1d to strike. Then, as shown in Fig. 2, when the user pulls the operating portion 13, the control portion 17 operates the drive portion 4. This causes the wheel 3a to rotate in the direction of the arrow R as shown in Fig. 4.

[0032] As shown in FIG. 9, the wheel 3a rotates, and the seventh engaging pin P7 passes over the seventh engaged portion L7, and the mutual engagement is released. Then, the piston 1b moves downward until it abuts against the damper 1g due to the gas pressure in the pressure accumulator chamber 1f. This causes the driver 1d to drive the leading driving tool n into the workpiece W. As shown in FIG. 10, the wheel 3a continues to rotate in the direction of the arrow R. Then, the first engaging pin P1 engages with the first engaged portion L1. As the wheel 3a continues to rotate, the second engaging pin P2 engages with the second engaged portion L2, and the third engaging pin P3 engages with the third engaged portion L3. Each engaging pin P is engaged with each engaged portion L in turn. This causes the driver 1d and the piston 1b to move upward. Note that the normal engagement state is when the number attached to the symbol P of the engaging pin P that is engaged and the number attached to the symbol L of the engaged portion L match.

[0033] As shown in FIG. 11, the wheel 3a continues to rotate, so that the second magnet 6c faces the Hall IC 6a. The Hall IC 6a detects the magnetism of the second magnet 6c. The Hall IC 6a then sends a signal to the control unit 17. The control unit 17 determines that the lower end of the driver 1d is located behind the set position of the driving tool n. The control unit 17 then operates the drive unit 4 to reduce the rotation speed of the wheel 3a. This suppresses excessive rotation of the wheel 3a. This prevents the wheel 3a from passing the waiting position of the driver 1d. The control unit 17 then operates the feed mechanism 5 to feed the driving tool n to the set position.

[0034] As shown in FIGS. 2 and 6, the feed mechanism 5 is provided so as to be located between the nose portion 2 and the magazine 16. The feed mechanism 5 has a feeder 5a that feeds the driving tool n to a set position. The feeder 5a has a solenoid 5h that is operated by the control unit 17. The solenoid 5h is installed in a solenoid holder 5k made of resin. This makes it difficult for the impact received by the nose portion 2 due to the impact of the driver 1d to be transmitted to the solenoid 5h. This prevents the solenoid 5h from being damaged by the impact.

[0035] As shown in FIG. 14, the solenoid holder 5k has a protruding portion 5m protruding toward the nose portion 2 at its front portion. The protruding portions 5m are arranged in a pair with a plunger 5i attached to the solenoid 5h sandwiched therebetween. As shown in FIG. 6, each protruding portion 5m abuts on a surface parallel to the supply surface that guides the driving tool n of the passage member 2c. Each protruding portion 5m and the passage member 2c are connected to each other by bolts and nuts. As a result, the solenoid 5h is fixed to the nose portion 2 via the solenoid holder 5k. Therefore, the solenoid 5h can be properly positioned with respect to the nose portion 2 compared to a configuration in which the solenoid 5h is fixed to the magazine 16. Furthermore, the feeder 5a can be unitized by attaching the solenoid 5h to the solenoid holder 5k. Therefore, the feed mechanism 5 can be easily attached to the nose portion 2.

[0036] As shown in Fig. 6, the solenoid holder 5k has a recess 5n at its rear into which the protrusion 16a of the magazine 16 is removably inserted. By inserting the protrusion 16a into the recess 5n, the solenoid holder 5k and the magazine 16 are locked so as not to be significantly displaced from each other. The feed mechanism 5 has a holder cover 5p that covers the feeder 5a from the outside. The holder cover 5p is placed across the solenoid holder 5k and the passage member 2c. The holder cover 5p supports the protrusion 16a of the magazine 16 so as to sandwich it between the holder cover 5p and the recess 5n of the solenoid holder 5k.

[0037] As shown in FIG. 12, the feeder 5a has a plunger 5i that can move in the supply direction of the driving tool n relative to a solenoid 5h. A feed pawl 5b is rotatably attached to the tip of the plunger 5i. The feed pawl 5b is biased by a spring 5c ​​so as to protrude toward the driving tool n. The feed mechanism 5 has a check pawl 5e on the opposite side of the driving tool n from the feed pawl 5b. The check pawl 5e is rotatably attached to the cover member 2e of the nose portion 2. The check pawl 5e is biased by a spring 5f so as to protrude toward the driving tool n.

[0038] As shown in FIG. 12, the plunger 5i is biased in the feed direction by the feed spring 5j. When the solenoid 5h receives power based on a signal from the control unit 17, the plunger 5i moves in the reverse feed direction against the biasing force of the feed spring 5j. As shown in FIG. 13, the feed claw 5b also moves in the reverse feed direction. The feed claw 5b has a feed inclined surface 5d that inclines forward toward the tip protruding toward the driving tool n. The feed inclined surface 5d comes into contact with the driving tool n as the feed claw 5b moves in the reverse feed direction. As a result, the feed claw 5b retreats in a direction away from the driving tool n against the biasing force of the spring 5c. The feed claw 5b moves backward over one of the driving tools n. The movement of the linked driving tool N in the reverse feed direction is restricted by the check claw 5e. Therefore, the linked driving tool N is held so as not to follow the return of the feed claw 5b.

[0039] When the power to the solenoid 5h is cut off, the feed claw 5b moves in the feed direction due to the biasing force of the feed spring 5j. The feed claw 5b presses the driving tool n in the feed direction. The connecting driving tool N is then sent toward the driving passage 2a. The leading driving tool n is set to the set position. As shown in FIG. 12, the check claw 5e has a check inclined surface 5g that inclines forward as it approaches the tip protruding toward the driving tool n. When the connecting driving tool N is sent, the driving tool n abuts against the check inclined surface 5g from behind. This causes the check claw 5e to retreat in a direction away from the driving tool n against the spring 5f. Even after the driving tool n is sent to the set position, the feed claw 5b presses the driving tool n in the feed direction due to the biasing force of the feed spring 5j. This prevents the driving tool n sent to the set position from returning in the reverse feed direction.

[0040] As described above, as shown in FIG. 2, the driving tool 10 has a nose portion 2 in which a driving passage 2a is formed. A contact arm 11 is movably provided at the tip of the nose portion 2. The contact arm 11 moves between an OFF position protruding from the nose portion 2 and an ON position closer to the nose portion 2 than the OFF position. The driver 1d strikes the driving tool n set in the driving passage 2a. The shutter 7 moves between a blocking position located on the movement path of the driver 1d and an open position retracted from the movement path to allow the driver 1d to move. A connecting rod 8 connects the contact arm 11 and the shutter 7. The connecting rod 8 moves the shutter 7 from the blocking position to the open position in conjunction with the movement of the contact arm 11 from the OFF position to the ON position. Furthermore, the connecting rod 8 moves the shutter 7 from the open position to the blocking position in conjunction with the movement of the contact arm 11 from the ON position to the OFF position.

[0041] Therefore, the movement of the contact arm 11 in both directions is connected to the movement of the shutter 7 in both directions by the connecting rod 8. Therefore, the shutter 7 reliably moves to the open position or the blocked position in response to the movement of the contact arm 11.

[0042] 7, the connecting rod 8 has a front portion 8a rotatably connected to the contact arm 11, and a rear portion 8b rotatably connected to the shutter 7. This allows the movement of the contact arm 11 to be smoothly transmitted to the shutter 7 via the connecting rod 8.

[0043] 8 and 15, the shutter 7 moves in a direction different from the movement direction of the contact arm 11 between the ON position and the OFF position. Therefore, the shutter 7 can be moved in a preferred direction. For example, even if the movement direction of the contact arm 11 is set to a striking direction that makes it easy to press the contact arm 11 against the workpiece and operate it, the shutter 7 moves in a direction different from the striking direction and is likely to block the driving passage 2a.

[0044] As shown in Figures 8 and 14, the shutter 7 moves in a direction perpendicular to the striking direction of the driver 1d. This allows the installation space for the shutter 7 in the striking direction to be reduced. For example, the installation space for the shutter 7 in the striking direction can be reduced compared to when the shutter 7 moves in the striking direction. Furthermore, the strength of the shutter 7 can be ensured by giving the shutter 7 a thickness along the striking direction.

[0045] 7 and 14, the nose portion 2 has a guide hole 2d that is perpendicular to the striking direction of the driver 1d. The shutter 7 is inserted into the guide hole 2d and slides along the guide hole 2d. Therefore, the shutter 7 can be easily assembled to the nose portion 2 by the guide hole 2d. Furthermore, the shutter 7 can be moved smoothly by the guide hole 2d.

[0046] As shown in Figures 14 and 15, the shutter 7 has a wide portion 7b formed to be wider than the width of the driver 1d. When the driver 1d moves in the striking direction and hits the shutter 7, the wide portion 7b is supported by the downstream receiving surface 2f of the guide hole 2d in the striking direction. Therefore, the load of the driver 1d can be distributed and transmitted to the downstream receiving surface 2f of the guide hole 2d. As a result, the strike of the driver 1d can be supported by the shutter 7 and the downstream receiving surface 2f of the guide hole 2d.

[0047] As shown in Fig. 14, when the driver 1d moves in the striking direction and hits the shutter 7, the shutter 7 is supported by the cooperation of the upstream receiving surface 2g and the downstream receiving surface 2f of the guide hole 2d in the striking direction. For example, when the shutter 7 is struck by the driver 1d and tilted, the shutter 7 is supported in a sandwiched state between the upstream receiving surface 2g and the downstream receiving surface 2f. Therefore, the strike of the driver 1d can be supported by the shutter 7 and the upstream receiving surface 2g and the downstream receiving surface 2f of the guide hole 2d.

[0048] 15, when viewed from the striking direction of the driver 1d, the driver 1d is located on the widthwise center line of the shutter 7. The connecting rod 8 is also located on the widthwise center line of the shutter 7. This allows the shutter 7 to support the driver 1d without tilting to one side in the width direction when the driver 1d hits the shutter 7.

[0049] As shown in FIG. 2, the driving tool 10 has a nose portion 2 in which a driving passage 2a is formed. A contact arm 11 is movably provided at the tip of the nose portion 2. The contact arm 11 moves between an OFF position protruding from the nose portion 2 and an ON position closer to the nose portion 2 than the OFF position. A driver 1d strikes a driving tool n set in the driving passage 2a. A shutter 7 is movably provided at the nose portion 2 in a direction perpendicular to the striking direction of the driver 1d. The shutter 7 moves between a blocking position located on the moving path of the driver 1d and an open position retracted from the moving path to allow the driver 1d to move. Therefore, the shutter 7 moves in a direction perpendicular to the striking direction. Therefore, the installation space of the shutter 7 in the striking direction can be reduced.

[0050] As shown in Figure 2, the nail driver n is a nail connected to a spirally wound connector, so that the nail driver can be mounted in a compact, housed state.

[0051] Various modifications can be made to the embodiment described above. For example, the driving tool 10 is a gas spring type driving tool that uses gas pressure. However, the present invention can be applied to a mechanical spring type driving tool that uses spring force instead.

[0052] The solenoid holder 5k may be directly connected to the nose portion 2 without being connected to the passage member 2c. The solenoid holder 5k may be connected to the passage member 2c on a surface in a direction different from the supply direction of the driving tool n.

[0053] The shutter 7 may be configured to move between the blocking position and the opening position by a rotating motion. The shutter 7 may be configured to slide in a direction different from the direction perpendicular to the striking direction. The shutter 7 may not be connected to the contact arm 11 by a connecting member. The shutter 7 is configured to be located between the driving tool n and the driver 1d. Alternatively, the shutter 7 may be configured to restrict the movement of the driver 1d by being inserted into a recess or through hole formed in the driver 1d, engaging with a protrusion formed in the driver 1d, or hooking onto the rack 1e.

[0054] The position detection sensor 6 may be provided on the driver 1d to detect the position of the driver 1d. The position detection sensor 6 may be provided in an arbitrary position. The control unit 17 may be configured to send a signal to the feeder 5a when it detects the standby position of the driver 1d. The Hall IC 6a may be provided on the wheel 3a, and the magnets 6b and 6c may be provided on the mechanism case 3b. The Hall IC 6a and the magnets 6b and 6c may be provided on the engagement pin P. The magnets 6b and 6c may be inserted into recesses provided on the wheel 3a, for example. Only one magnet may be provided. A magnet may be provided to detect the position where the driver 1d has been lowered. This allows the rotation of the lifter 3 to be stopped when the driver 1d is lowered.

[0055] The lifter 3 has been exemplified as having an engaging pin P. Instead of this, a pinion-shaped protrusion may be provided. In this case, a pin may be used as the engaged portion L of the driver 1d. The number of engaging pins P and engaged portions L may be any number.

[0056] The driving tool 10 of the embodiment is an example of an electric driving tool in one aspect of the present disclosure. The driving passage 2a of the embodiment is an example of a driving passage in one aspect of the present disclosure. The nose portion 2 of the embodiment is an example of a nose portion in one aspect of the present disclosure. The contact arm 11 of the embodiment is an example of a contact arm in one aspect of the present disclosure. The driving tool n of the embodiment is an example of a driving tool in one aspect of the present disclosure. The driver 1c of the embodiment is an example of a driver in one aspect of the present disclosure. The shutter 7 of the embodiment is an example of a regulating member in one aspect of the present disclosure. The connecting rod 8 of the embodiment is an example of a connecting member in one aspect of the present disclosure.

[0057] The front portion 8a in the embodiment is an example of a first end portion in one aspect of the present disclosure, and the rear portion 8b in the embodiment is an example of a second end portion in one aspect of the present disclosure.

[0058] The guide hole 2d of the embodiment is an example of a guide hole according to one aspect of the present disclosure.

[0059] The downstream receiving surface 2f of the embodiment is an example of a downstream receiving surface according to one aspect of the present disclosure, and the upstream receiving surface 2g of the embodiment is an example of an upstream receiving surface according to one aspect of the present disclosure. [Explanation of symbols]

[0060] N Connection Drive Tool n Driving tool 10. Driving tools (electric driving tools) 11 Contact Arm 11a Connecting bolt 12 Grip 13 Control section 14 Battery mounting section 15 Battery pack 16 Magazine 16a Convex part 17 Control section 18 Connecting bracket 1 Tool body 1a Main housing 1b Piston 1c Cylinder 1d Driver 1e Rack L Engaged part L1 1st engaged part L2 2nd engaged part L3 3rd engaged part L4 4th engaged part L5 5th engaged part L6 6th engaged part L7 7th engaged part 1f Pressure accumulator 1g Damper 1h Drive unit case 2 Nose 2a Drive-in passage 2b Injection port 2c Passage material 2d Guide hole 2e Lid member 2f Downstream receiving surface 2g Upstream receiving surface 3 Lifter 3a Wheel 3b Mechanism case 3c Rotation axis 3d bearing 3e Lid P Engagement pin P1 First engagement pin P2 Second engagement pin P3 3rd engagement pin P4 4th engagement pin P5 5th engagement pin P6 6th engagement pin P7 7th engagement pin 4 Drive unit 4a Motor 4b Output shaft 4c Bearings 4d reduction section 4e Planetary Gear Train 4f Carrier J Motor axis 5. Feed mechanism 5a Feeder 5b Feed jaw 5c Spring 5d Feed inclination 5e Non-return claw 5f Spring 5g non-return slope 5h Solenoid 5i Plunger 5j feed spring 5k solenoid holder 5m overhang 5n Recess 5p holder cover 6 Position detection sensor 6a Hall IC 6b First magnet 6c 2nd magnet 7 Shutter (regulating member) 7a Shaft hole 7b Wide section 8 Connecting rod (connecting member) 8a Front (first end) 8b Rear (2nd end) 8c Rotation axis 8d Rotation axis W: Material to be driven

Claims

1. It is an electric driving tool, The nose section where the driving passage is formed, A contact arm is provided movably at the tip of the nose portion and moves between an off position protruding from the nose portion and an on position closer to the nose portion than the off position. A driver for striking the driving tool set in the aforementioned driving passage, A restricting member moves between a blocking position located on the driver's movement path and an open position that retracts from the movement path and allows the driver to move, An electric driving tool having a connecting member that connects the contact arm and the restricting member, and moves the restricting member from the blocked position to the open position in conjunction with the movement of the contact arm from the off position to the on position, and moves the restricting member from the open position to the blocked position in conjunction with the movement of the contact arm from the on position to the off position.

2. An electric driving tool according to claim 1, The connecting member is an electric driving tool having a first end rotatably connected to the contact arm and a second end rotatably connected to the regulating member.

3. An electric driving tool according to claim 1 or claim 2, The regulating member is an electrically operated driving tool that moves in a direction different from the direction of movement of the contact arm between the ON position and the OFF position.

4. An electric driving tool according to claim 1 or claim 2, The regulating member is an electrically operated driving tool that moves in a direction perpendicular to the striking direction of the driver.

5. An electric driving tool according to claim 4, The nose portion has a guide hole perpendicular to the striking direction of the driver, The regulating member is an electric driving tool that is inserted into the guide hole and slides along the guide hole.

6. An electric driving tool according to claim 5, The regulating member has a wide portion that is wider than the width of the driver, An electric driving tool in which, when the driver moves in the striking direction and strikes the regulating member, the wide portion is supported by the downstream receiving surface of the guide hole in the striking direction.

7. An electric driving tool according to claim 6, An electric driving tool in which, when the driver moves in the striking direction and strikes the regulating member, the regulating member is supported by the cooperation of the upstream receiving surface and the downstream receiving surface of the guide hole in the striking direction.

8. An electric driving tool according to claim 2, An electric driving tool in which, when viewed from the direction of impact of the driver, the driver is positioned on the width center line of the regulating member, and the connecting member is also positioned on the width center line of the regulating member.

9. It is an electric driving tool, The nose section where the driving passage is formed, A contact arm is provided movably at the tip of the nose portion and moves between an off position protruding from the nose portion and an on position closer to the nose portion than the off position. A driver for striking the driving tool set in the aforementioned driving passage, An electric driving tool having a restricting member that is movably provided on the nose portion in a direction perpendicular to the striking direction of the driver, and moves between a blocking position located on the movement path of the driver and an open position that is retracted from the movement path and allows the driver to move.

10. An electric driving tool according to any one of claims 1, 2, or 9, The aforementioned nail driving tool is an electric nail driving tool in which nails are connected to a spirally wound connector.

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