Work equipment

Abstract

To provide a work machine which can be improved in work efficiency and durability with simple constitution.SOLUTION: The work machine comprises an injection portion 7, a striking portion 30 which strikes a stopper, and a magazine portion 20 which feeds the stopper to the injection portion 7. The magazine portion 20 extends in a longitudinal direction B1 and is formed in a plate shape, and comprises: a base member 20a which can lock the stopper and is movable in the longitudinal direction B1; a feeder portion 20b which can switch between a contact state in which the portion contacts the stopper engaged with the base member 20a and a non-contact state in which the portion does not contact the stopper, when moving in the longitudinal direction B1; and a guide portion which guides movement in the longitudinal direction B1 of the feeder portion 20b. The work machine further has a detecting portion 21 which detects a position of the feeder portion 20b in the longitudinal direction B1.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a work machine such as a driving machine. [Background technology]

[0002] As an example of a work machine, a driving machine equipped with a magazine capable of storing fasteners is known. Patent Document 1 describes an example of such a driving machine equipped with a magazine that stores fasteners, an ejection unit that feeds the fasteners from the magazine, and an impact unit that strikes the fasteners fed to the ejection unit. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-3777 Summary of the Invention [Problem to be solved by the invention]

[0004] In the fastener driving tool described in Patent Document 1, the magazine has a main body portion fixed to the ejection portion and a guide portion that can be housed within the main body portion and slides back and forth, and the guide portion is provided with a feeder that urges fasteners toward the ejection portion in front. When refilling the magazine with fasteners, the guide portion is slid rearward relative to the main body portion, and the fasteners are loaded in front of the feeder in the guide portion (toward the ejection portion). In this state, when the guide portion is slid forward and set in the main body portion, the fasteners are urged forward by the feeder.

[0005] Because the above-mentioned magazines have a complicated structure, there is a demand for a simpler magazine structure, and for a simpler magazine structure and control to detect the remaining number of fasteners loaded in the magazine, thereby improving the operability and durability of the fastener driving tool.

[0006] An object of the present invention is to provide a work machine with a simple configuration and improved workability and durability. [Means for solving the problem]

[0007] In one embodiment, the work machine has an ejection section, an impact section that impacts the fasteners sent to the ejection section, a motor for driving the impact section, a magazine section that extends in a first direction and sends the fasteners to the ejection section, and a main body housing that supports the motor and the impact section, wherein the magazine section includes a base member that can engage the fasteners in a state where the fasteners can be moved in the first direction, a feeder section that is movable in the first direction and is biased to one side in the first direction, and a guide section that guides the movement of the feeder section in the first direction, and one side end of the base member in the first direction is attached to the injection unit, and the other side end in the first direction is open so that the stopper can be loaded so that the stopper is engaged with the base member, and the feeder unit is switchable between an abutting state in which it abuts against the stopper engaged with the base member and can press the stopper against the injection unit when moving in the first direction, and a non-abutting state in which it does not abut against the stopper, and has a detection unit that detects the position of the feeder unit in the first direction, and a holder unit that extends in the first direction and has one side end in the first direction connected to the injection unit, and the detection unit is provided on the holder unit. A working machine according to another embodiment includes a launching unit, a striking unit that is movable in a striking direction and strikes a fastener sent to the launching unit, a motor that extends in a first direction perpendicular to the striking direction and drives the striking unit, and a magazine unit that extends in the first direction and can hold the fastener in a state that allows it to move in the first direction. a main body housing that supports the motor and the impact unit; a detection unit that detects the remaining amount of the fasteners, one end of the magazine unit in the first direction is attached to the injection unit, and the other end of the magazine unit in the first direction is open so that the fasteners can be loaded so that the fasteners are engaged with the magazine unit, and a detection unit that detects the remaining amount of the fasteners a first end portion of the first direction attached to the ejection unit independently of the main body housing and the magazine unit; The detector includes a holder portion, and the detector is provided in the holder portion. [Effects of the Invention]

[0008] According to the present invention, the workability and durability of a work machine can be improved with a simple configuration. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a side view showing a driving machine as an example of a work machine according to an embodiment of the present invention; [Figure 2] FIG. 2 is a perspective view showing the appearance of the driving tool shown in FIG. [Figure 3] 2 is a side view showing a part of the internal structure of the driving tool shown in FIG. 1. [Figure 4] FIG. 2 is an explanatory diagram showing the internal structure of the driving tool shown in FIG. [Figure 5] 2 is an explanatory diagram showing the external appearance of the driving tool shown in FIG. 1 as viewed from the rear. FIG. [Figure 6] 2 is a bottom view showing a part of the internal structure of the driving tool shown in FIG. 1. FIG. [Figure 7] 2 is a perspective view showing the structure of a magazine unit and a holder unit of the driving machine shown in FIG. 1. FIG. [Figure 8] 2 is an explanatory diagram showing the structure of a holder section and a feeder section of the driving machine shown in FIG. 1. FIG. [Figure 9] FIG. 9 is an explanatory diagram showing a structure in which a fastener is loaded into the structure shown in FIG. 8. [Figure 10] 1. FIG. 4 is an explanatory diagram showing a state where a contact portion of a feeder unit of the driving tool shown in FIG. 1 is in a first position. [Figure 11] 11 is an explanatory view showing a state in which the contact portion shown in FIG. 10 is in a second position. FIG. [Figure 12] 2A and 2B are plan views showing the structure of the detection unit of the driving machine shown in FIG. 1, in which (a) is in the switch-off state and (b) is in the switch-on state. [Figure 13] 1. FIG. 4 is an explanatory diagram showing an engagement structure between a magazine unit and a feeder biasing unit of the driving machine shown in FIG. [Figure 14] 14 is an explanatory view showing a structure in which a stopper is loaded into the engagement structure shown in FIG. 13. FIG. [Figure 15] FIG. 15 is a cross-sectional view showing the structure cut along the line AA shown in FIG. [Figure 16] 2A and 2B are schematic diagrams showing the rattle suppression structure of the driving tool shown in FIG. 1, in which (a) shows the state in which a fastener is loaded and (b) shows the state in which the fastener is not loaded. DETAILED DESCRIPTION OF THE INVENTION

[0010] The working machine of this embodiment will be described with reference to the drawings.

[0011] In this embodiment, a driving machine 1 will be described as an example of a work machine. The driving machine 1 shown in Figures 1 to 6 is suitable for driving fasteners 6 (see Figure 9) such as nails or staples into mating materials such as boards or plasterboards.

[0012] The driving tool 1 has a housing 10 and a magazine unit 20. The housing 10 includes a main body housing 11, a handle 12, a motor housing unit 13, and a connecting unit 14. One longitudinal end of the handle 12 and the motor housing unit 13 is connected to the main body housing 11, and the other longitudinal end of the handle 12 and the motor housing unit 13 is connected to the connecting unit 14. In other words, the main body housing 11, the handle 12, the motor housing unit 13, and the connecting unit 14 are integrated.

[0013] The housing 10 is made of a synthetic resin such as nylon or polycarbonate. The main housing 11 of the housing 10 has a generally rectangular cylindrical shape overall. Here, the longitudinal direction of the main housing 11 shown in FIG. 1 is defined as the "up-down direction C1," and the longitudinal direction of the handle 12 and motor accommodating portion 13 is defined as the "front-rear direction B1." Furthermore, the direction perpendicular to the up-down direction C1 and the front-rear direction B1 is defined as the "left-right direction E1" shown in FIG. 2. However, these definitions are merely for the convenience of explanation.

[0014] According to the above definition, the handle 12 is located above the motor accommodating portion 13 and extends rearward from one side (rear side / back surface) of the main body housing 11. On the other hand, the motor accommodating portion 13 is located below the handle 12 and extends rearward from one side (rear side / back surface) of the main body housing 11. Furthermore, the connecting portion 14 connects the rear end of the handle 12 to the rear end of the motor accommodating portion 13. In other words, the front-rear direction in this embodiment corresponds to the extension direction of the handle 12 in the present invention.

[0015] As shown in FIG. 4, the driving tool 1 also includes a striking unit 30. The striking unit 30 has a plunger 31 disposed within the main housing 11 and a driver blade 32 fixed to the plunger 31. The driver blade 32 is made of metal. A guide shaft 33 is fixed within the main housing 11. A center line A1 is the center of the guide shaft 33. The plunger 31 is attached to the guide shaft 33, and the striking unit 30 is movable in a direction along the center line A1.

[0016] As shown in FIG. 1, the main housing 11 is provided with an ejection section 7 that is exposed to the outside of the main housing 11. The ejection section 7 can be defined as a nose section. The striking section 30 strikes the fastener 6 sent to the ejection section 7. As shown in FIG. 4, the ejection section 7 has a blade guide 5 and a guide plate 38. The blade guide 5 may be made of either metal or synthetic resin. The ejection section 7 has an ejection path 2 formed by the blade guide 5. The ejection path 2 may be any of a groove, passage, hole, gap, or space. The driver blade 32 is movable within the ejection path 2.

[0017] 1, a push lever 8 is attached near the tip of the ejection unit 7. The push lever 8 can move and stop relative to the ejection unit 7. Furthermore, the push lever 8 can come into contact with and separate from a mating member. Furthermore, as shown in FIG. 4, the ejection unit 7 comes into contact with the driver blade 32, thereby preventing the driver blade 32 from moving in a direction intersecting the center line A1.

[0018] The weight 34 also suppresses the reaction force received by the housing 10. The weight 34 is made of metal, for example. The weight 34 is attached to the guide shaft 33 and is movable in a direction along the center line A1.

[0019] A metal spring 35 is disposed within the main body housing 11, and the spring 35 is disposed between the plunger 31 and the weight 34 in the direction along the center line A1. The plunger 31 receives a downward biasing force D1 from the spring 35, which biases the plunger 31 toward the injection port 7 in the direction along the center line A1. The weight 34 receives an upward biasing force D2 from the spring 35, which biases the weight 34 away from the injection port 7 in the direction along the center line A1. A weight bumper 36 and a plunger bumper 37 are provided within the main body housing 11. The weight bumper 36 and the plunger bumper 37 are both made of synthetic rubber.

[0020] In addition, a battery pack 19, which is a power source, is attached to the connecting part 14 so as to be attachable and detachable. When a voltage is applied from the battery pack 19 to the electric motor 16 and the motor shaft 17 rotates forward, the rotational force of the motor shaft 17 is transmitted to the first gear 42. The rotational force of the first gear 42 is transmitted to the third gear 44 via the second gear 43.

[0021] A control unit 15 is provided within the connecting unit 14. The control unit 15 is a microcomputer having an input port, an output port, an arithmetic processing unit, and a storage unit. A trigger 4 and a trigger switch 41 are provided on the handle 12, and when the operator applies an operating force to the trigger 4, the trigger switch 41 turns on. When the operator releases the operating force applied to the trigger 4, the trigger switch 41 turns off.

[0022] As shown in FIG. 3, a holder section 24 and a magazine section 20 are provided on the side of the motor housing section 13 opposite the handle 12. The magazine section 20 has a plate-shaped base member 20a that can accommodate multiple fasteners 6 (see FIG. 9) to be struck by the striking section 30. The magazine section 20 also has a feeder section 20b that supplies the multiple fasteners 6 stored therein one by one to the injection path 2. The fasteners 6 sent by the feeder section 20b to the injection path 2 of the injection section 7 are struck by the striking section 30, which moves downward D1 as shown in FIG. 4. The fasteners 6 are then ejected from the injection port 3, which is the exit of the injection path 2, and driven into a mating material. More specifically, the heads of the fasteners 6 sent from the base member 20a of the magazine section 20 to the injection path 2 by the feeder section 20b are struck by the driver blade 32, which moves downward D1.

[0023] When the operator applies an operating force to the trigger 4, the trigger switch 41 is turned on, and when the push lever 8 is pressed against the opposing material, the push lever switch 9 is turned on. The control unit 15 then applies voltage to the electric motor 16, causing the motor shaft 17 to rotate. The rotational force of the motor shaft 17 is amplified by the reducer 18 and transmitted to the first gear 42, causing the first gear 42, the second gear 43, and the third gear 44 to rotate. The striking unit 30 then rises from its standby position due to engagement of at least one of the cam rollers of the first gear 42 and the cam rollers of the second gear 43. Furthermore, the weight 34 descends due to engagement of the cam roller of the third gear 44.

[0024] Next, when the cam roller of the first gear 42 and the cam roller of the second gear 43 are both released from engagement, the striking portion 30 descends due to the biasing force of the spring 35. Furthermore, when the cam roller of the third gear 44 is released from engagement, the weight 34 ascends due to the biasing force of the spring 35. The driver blade 32 strikes one of the fasteners 6 that has reached the injection path 2 from the base member 20a of the magazine portion 20, and the fastener 6 is driven into the opposing material.

[0025] After the driver blade 32 strikes the fastener 6, the plunger 31 collides with the plunger bumper 37. The plunger bumper 37 absorbs part of the kinetic energy of the striking portion 30. The weight 34 also collides with the weight bumper 36. The weight bumper 36 absorbs part of the kinetic energy of the weight 34. In this way, when the striking portion 30 moves downward D1 to strike the fastener 6, the weight 34 can reduce the recoil when the striking portion 30 strikes the fastener 6.

[0026] Furthermore, the control unit 15 continues to rotate the electric motor 16 even after the operator releases the push lever 8 from the mating material after the fastener 6 has been driven into the mating material and the trigger switch 41 is turned off. Then, the striking unit 30 rises from the bottom dead center against the biasing force of the spring 35, and the plunger 31 moves away from the plunger bumper 37. When the control unit 15 detects that the striking unit 30 has reached the standby position, it stops the electric motor 16.

[0027] Next, the magazine unit 20 of the driving machine 1 will be described in detail.

[0028] As shown in FIG. 4, the magazine unit 20 includes a base member 20a extending in the front-rear direction (first direction) B1 and formed in a plate shape; a feeder unit 20b movable along the front-rear direction B1 and biased toward one side in the front-rear direction B1; and a rail (guide unit) 20f shown in FIG. 6 that guides the movement of the feeder unit 20b in the front-rear direction B1. The base member 20a can engage the stopper 6 in a manner that allows it to move in the front-rear direction B1. As shown in FIG. 7, an end 20i on one side of the base member 20a in the front-rear direction B1 is attached to the injection unit 7, and an end 20j on the other side of the base member 20a in the front-rear direction B1 is open so that the stopper 6 can be inserted, engaged, and removed. Furthermore, the feeder unit 20b is switchable between an abutting state in which it abuts the stopper 6 engaged with the base member 20a and a non-abutting state in which it does not abut the stopper 6 when moving in the front-rear direction B1.

[0029] As shown in Fig. 4, the driving tool 1 of this embodiment has a detection unit 21 that detects the position of the feeder unit 20b in the front-to-rear direction B1. As shown in Fig. 6, the feeder unit 20b has a base 20c that engages with a rail 20f and moves in the front-to-rear direction B1, and an abutment unit 20d attached to the base 20c. The detection unit 21 detects the position of the base 20c. In the driving tool 1, the detection unit 21 detects when the base 20c reaches a predetermined position set in advance on the detection unit 21.

[0030] Here, the rail 20f is attached to the ejection unit 7 shown in Figure 7. A holder unit 24 is attached to the ejection unit 7, and the detection unit 21 is provided in this holder unit 24. As shown in Figure 4, the main body housing 11 that houses the striking unit 30 is attached to the ejection unit 7. Furthermore, the magazine unit 20 has a handle arm (arm unit) 27 that is located on the other side of the holder unit 24 in the front-rear direction B1 (the rear side away from the ejection unit 7). The handle arm 27 is attached to the housing 10 and the base member 20a.

[0031] 5, an opening 27a in which the base member 20a is disposed is provided at the rear portion of the handle arm 27, and the fastener 6 is loaded through this opening 27a. In other words, the fastener driving tool 1 is a rear-loading type in which the fastener 6 is loaded from the rear of the fastener driving tool 1.

[0032] 9 and 10, the contact portion 20d of the feeder portion 20b, which presses the stopper 6 toward the injection portion 7 having the guide plate 38, can be moved by an operator between a first position 22 corresponding to the contact state and a second position 23 corresponding to the non-contact state shown in FIG. 11.

[0033] As shown in FIGS. 8 and 9, the contact portion 20d moves between the first position 22 and the second position 23 by rotating about a rotation shaft 20g extending along a vertical direction (second direction) C1 intersecting with the front-rear direction B1. Specifically, the contact portion 20d is connected to the rear end portion 20e and supported by the base portion 20c so as to be rotatable about the rotation shaft 20g. As shown in FIGS. 10 and 11, such a structure of the contact portion 20d, rear end portion 20e, and base portion 20c is provided as the feeder portion 20b on both sides of the plate-shaped base member 20a in the left-right direction E1. That is, as the structure of the feeder portion 20b, the rear end portions 20e are arranged on both sides of the base member 20a in a V-shaped open state. By pinching (pressing) the rear end portions 20e on both sides of the base member 20a inward, the contact portions 20d on both sides rotate about the rotation shaft 20g. As a result, the contact portions 20d on both sides that had been in contact with the base member 20a rotate and open outward, moving away from the base member 20a, as shown in Fig. 11. In other words, the feeder portion 20b is switchable between a contact state in which it contacts the stopper 6 engaged with the base member 20a and a non-contact state in which it does not contact the stopper 6 when moving in the front-rear direction B1.

[0034] When loading the fastener 6 into the driving tool 1, the fastener 6 is loaded into the base member 20a through the opening 27a of the handle arm 27 shown in FIG. 5. After loading, the operator presses both rear end portions 20e inward, which opens the contact portions 20d on both sides, as shown in FIG. 11, forming a gap between the contact portions 20d and the base member 20a. In this state, the fastener 6 is passed through the gap between the contact portions 20d and the base member 20a, and the fastener 6 is positioned in front of the contact portions 20d, as shown in FIG. 10. After that, by releasing the pressure on the rear end portions 20e inward, the contact portions 20d come into contact with the base member 20a, allowing them to come into contact with the fastener 6.

[0035] Next, the detection unit 21 shown in Figure 12 will be described. The driving tool 1 has the detection unit 21 that detects the position of the feeder unit 20b, which moves in the forward and backward direction B1. The detection unit 21 is electrically connected to the battery pack 19 and is a switch that switches whether or not the electric motor 16 is started.

[0036] The detector 21 includes a rotatable lever 21c engageable with a pressing portion 20h, which is part of the feeder 20b shown in FIG. 11, and a detector body 21a that is pressed by the rotation of the lever 21c to switch the start / stop of the electric motor 16. The detector body 21a has a protrusion 21b that is pressed by the lever 21c. That is, in the feeder 20b that moves forward each time a fastener 6 is driven, as shown in FIG. 12(a), the protrusion 21b is not pressed by the lever 21c until the pressing portion 20h presses the lever 21c, and the detector body 21a (switch) is, for example, in the OFF state, and the electric motor 16 is in a startable state (startable state). That is, undriven fasteners 6 still remain on the base member 20a, and driving is possible.

[0037] On the other hand, as shown in FIG. 12(b), when the pressing portion 20h of the feeder portion 20b presses the lever portion 21c, the protrusion portion 21b is pressed by the lever portion 21c, the detector main body 21a (switch) is, for example, turned ON, and the electric motor 16 is in a state where it will not start (a state where it will not start). In the driving machine 1 of this embodiment, when all the fasteners 6 loaded are driven and there are no more fasteners 6 (there are no fasteners 6), the lever portion 21c presses the protrusion portion 21b, the detector main body 21a (switch) is, for example, turned ON, and the electric motor 16 is in a state where it will not start (a state where it will not start). In this state, the driving machine 1 cannot perform the driving operation. This makes it possible to prevent the driving machine 1 from driving in empty fasteners.

[0038] In the driving tool 1 of this embodiment, it is preferable that the detector main body 21a (switch) detects the feeder section 20b when the number of fasteners 6 loaded on the base member 20a reaches zero. To do this, it is necessary to detect the slight movement of the feeder section 20b equivalent to one fastener 6, and it is therefore necessary to improve the accuracy with which the detector 21 detects the position of the feeder section 20b.

[0039] Therefore, in the detection unit 21, the pressing portion 20h of the feeder portion 20b does not directly press the protrusion 21b of the detection unit main body 21a, but the pressing portion 20h of the feeder portion 20b presses the lever portion 21c, and the pressed lever portion 21c rotates to press the protrusion 21b of the detection unit main body 21a. This makes it possible to press the protrusion 21b even with a smaller amount of pressure on the lever portion 21c of the pressing portion 20h compared to when the pressing portion 20h of the feeder portion 20b directly presses the protrusion 21b, thereby improving the accuracy of position detection of the feeder portion 20b.

[0040] 13 and 14, the driving tool 1 is provided with an elastic body (holder biasing portion) 25 that biases the holder portion 24 forward (to one side) in the front-to-rear direction B1 relative to the injection portion 7. The driving tool 1 is also provided with a spiral spring (feeder biasing portion) 26 that biases the feeder portion 20b forward (to one side) in the front-to-rear direction B1 relative to the injection portion 7. The driving tool 1 is provided with a rubber O-ring as the elastic body 25 that serves as the holder biasing portion. The elastic body 25 is interposed between the handle arm 27 and the holder portion 24.

[0041] One end of power spring 26 is attached to ejection portion 7, and the other end is attached to feeder portion 20b. Power spring 26 is an elastic body that generates a biasing force to bring feeder portion 20b and ejection portion 7 closer to each other.

[0042] That is, in the driving tool 1, the holder portion 24 to which the detection portion 21 is attached is biased from the rear (handle arm 27 side) toward the front (ejection portion 7 side) by an elastic body (rubber O-ring) 25 interposed between the handle arm 27 and the holder portion 24. Furthermore, when the feeder portion 20b is separated rearward from the ejection portion 7, it is biased toward the ejection portion 7 by the spiral spring 26 provided on the ejection portion 7 side of the holder portion 24. In other words, the holder portion 24 and the feeder portion 20b are biased toward the ejection portion 7.

[0043] 15, the upper part of stopper 6 is disposed between the upper end of base member 20a of magazine unit 20 and rail 20f, and spiral spring 26 is disposed above the upper part of base portion 20c guided by rail 20f. Therefore, detection unit 21 is disposed further above rail 20f.

[0044] Furthermore, in order to detect the position of the feeder section 20b with high accuracy in the driving tool 1, it is preferable that the holder section 24 to which the detector section 21 is attached and the base member 20a to which the feeder section 20b is provided are also positioned with high accuracy. In other words, it is necessary to minimize rattles in the attachment of the holder section 24 and the base member 20a as much as possible.

[0045] Therefore, the driving tool 1 of this embodiment is equipped with a rattle suppression structure as shown in Figure 16. Specifically, the blade guide 5 and the guide plate 38 are fixed with bolts. The guide plate 38 and the magazine unit 20 are fixed by welding. The magazine unit 20 and the handle arm 27 are also fixed with bolts. As a result, the guide plate 38, the blade guide 5, the magazine unit 20, and the handle arm 27 are integrated into one unit, forming a U-shaped integral part.

[0046] Furthermore, a rubber elastic body (O-ring) 25 is provided between the holder portion 24 and the handle arm 27, and the elastic body 25 exerts a biasing force P1 on the holder portion 24 including the detection portion 21 and the blade guide 5, biasing them forward (towards the injection portion 7) toward the guide plate 38.

[0047] Meanwhile, power spring 26 is stretched between base 20c of feeder portion 20b and blade guide 5, and the biasing force P2 of power spring 26 biases base 20c of feeder portion 20b, contact portion 20d of feeder portion 20b, and driver blade 32 forward (toward ejection portion 7) toward guide plate 38. In other words, because the members on the detection unit 21 side and the members on the feeder portion 20b side are each biased forward toward guide plate 38, rattle in the front-to-rear direction B1 can be suppressed. This makes it possible to detect the position of feeder portion 20b with high accuracy, and to accurately detect the remaining amount of fastener 6. Fig. 16(a) shows a state where fasteners 6 remain, and fasteners 6, base 20c of feeder portion 20b, contact portion 20d of feeder portion 20b, and driver blade 32 are urged toward guide plate 38 by urging force P2 of spiral spring 26. Fig. 16(b) shows a state where no fasteners 6 remain, and pressing portion 20h of base 20c presses lever portion 21c of detection portion 21, causing detection portion 21 to detect that feeder portion 20b has reached the position of lever portion 21c of detection portion 21. In other words, it is detected that no fasteners 6 remain.

[0048] With the above configuration, the driving machine 1 of this embodiment has a simpler configuration for the magazine unit 20 and can detect with high accuracy the remaining number of fasteners 6 loaded in the magazine unit 20, thereby improving the operability of the driving machine 1. Furthermore, the driving machine 1 can prevent blank driving, thereby improving the durability of the driving machine 1.

[0049] Furthermore, since the detector 21 does not detect the rotatable contact portion 20d but detects the base portion 20c of the feeder portion 20b that does not rotate, the detection accuracy can be improved.

[0050] Furthermore, the driving tool 1 is also devised with regard to the location where the detection unit 21 is installed. For example, even if the detection unit 21 is to be installed on the base member 20a of the magazine unit 20, the fasteners 6 are loaded into the base member 20a, so there is no space to install the detection unit 21 on the base member 20a. Furthermore, if the detection unit 21 is to be installed below the fasteners 6, it becomes difficult to route the wiring for the detection unit 21, so it is preferable to install the detection unit 21 above the fasteners 6. However, because the movable feeder unit 20b is attached to the rail 20f, which is located above the fasteners 6, the detection unit 21 cannot be installed on the rail 20f.

[0051] Therefore, in the driving machine 1, the detection unit 21 is attached to the holder unit 24, which is located above the fastener 6. Furthermore, the holder unit 24 is fixed to the blade guide 5 while being biased toward the blade guide 5 by an elastic body 25, and the rail 20f is also fixed to the blade guide 5. In other words, in the driving machine 1, the detection unit 21 is attached to the holder unit 24, which is fixed to the blade guide 5 to which the rail 20f is connected, thereby minimizing the number of members provided in the magazine unit 20 and simplifying the configuration of the magazine unit 20, while also improving the accuracy of position detection of the feeder unit 20b.

[0052] The present invention is not limited to the above-described embodiment, and various modifications are possible without departing from the spirit of the present invention. For example, in the above-described embodiment, the holder biasing portion is a rubber O-ring, and the feeder biasing portion is a spiral spring, but other elastic members may be used for the holder biasing portion and the feeder biasing portion. [Explanation of symbols]

[0053] 1... driving machine (work machine), 2... injection path, 3... injection port, 4... trigger, 5... blade guide, 6... stopper, 7... injection part, 8... push lever, 9... push lever switch, 10... housing, 11... main body housing, 12... handle, 13... motor accommodating part, 14... connecting part, 15... control part, 16... electric motor, 17... motor shaft, 18... reducer, 19... battery pack, 20... magazine part, 20a... base member, 20b... feeder part, 20c... base part, 20d... abutment part, 20e... rear end part, 20f... rail (guide part), 20g... rotating shaft, 20h... pressing part, 20i, 2 0j...end portion, 21...detection portion, 21a...detection portion main body, 21b...protrusion portion, 21c...lever portion, 22...first position, 23...second position, 24...holder portion, 25...elastic body (holder biasing portion), 26...power spring (feeder biasing portion), 27...handle arm (arm portion), 27a...opening, 30...impact portion, 31...plunger, 32...driver blade, 33...guide shaft, 34...weight, 35...spring, 36...weight bumper, 37...plunger bumper, 38...guide plate, 41...trigger switch, 42...first gear, 43...second gear, 44...third gear

Claims

1. An injection unit; a striking section that strikes the fastener sent to the ejection section; a motor for driving the striking portion; a magazine section extending in a first direction and feeding the stopper to the ejection section; a main body housing that supports the motor and the impact unit; and The magazine unit includes: a base member capable of locking the stopper in a state in which the stopper can be moved in the first direction; a feeder unit that is movable in the first direction and biased to one side in the first direction; a guide portion that guides movement of the feeder portion in the first direction; Equipped with one end of the base member in the first direction is attached to the injection unit, and the other end of the base member in the first direction is open so that the stopper can be loaded thereon so that the stopper is engaged with the base member; the feeder unit is switchable between an abutting state in which it abuts against the stopper engaged with the base member and can press the stopper against the injection unit when moving in the first direction, and a non-abutting state in which it does not abut against the stopper, a detection unit that detects a position of the feeder unit in the first direction; a holder portion extending in the first direction and having one end portion in the first direction connected to the injection portion, The detection unit is provided in the holder unit.

2. the striking portion strikes the fastener in a striking direction perpendicular to the first direction, The work machine according to claim 1 , wherein the holder portion is disposed between the main body housing and the base member in the striking direction.

3. The work machine according to claim 1 or 2, wherein the detection unit is disposed on one side of the other end of the motor in the first direction.

4. The work machine according to claim 1 , further comprising a feeder biasing portion provided in the holder portion and configured to bias the feeder portion toward one side in the first direction relative to the injection portion.

5. the guide portion is disposed on one side of the base member in a second direction perpendicular to the first direction, the detection portion is disposed on one side in the second direction with respect to the guide portion, The work machine according to claim 4 , wherein the feeder biasing portion is disposed on one side in the second direction with respect to the guide portion.

6. The work machine according to claim 5 , wherein the detection unit is disposed on one side of the base member in a third direction that is perpendicular to the first direction and the second direction.

7. 7. The work machine according to claim 4, wherein the feeder biasing portion is a spiral spring.

8. The feeder section includes: a base portion that engages with the guide portion and moves in the first direction; an abutment portion attached to the base and movable by an operator between a first position corresponding to the abutment state and a second position corresponding to the non-abutment state; Equipped with The work machine according to claim 1 , wherein the detection unit detects the position of the base.

9. The work machine according to claim 8 , wherein the abutment portion moves between the first position and the second position by rotating about a rotation axis that extends in an axial direction that intersects with the first direction.

10. the magazine unit is disposed on the other side of the holder unit in the first direction and has an arm unit attached to the main body housing and the base member, The work machine according to claim 1 , wherein one side of the holder portion in the first direction is supported by the ejection portion, and the other side of the holder portion in the first direction is supported by the arm portion.

11. The work machine according to claim 10 , further comprising a holder biasing portion interposed between the arm portion and the holder portion, and biasing the holder portion toward one side in the first direction relative to the ejection portion.

12. The detection unit a lever portion that is engageable with a part of the feeder portion and is provided so as to be rotatable; a detection unit main body including a protrusion that is pressed by the rotation of the lever unit to switch whether or not to start an electric motor that operates the striking unit; 12. A work machine according to any one of claims 1 to 11, comprising:

13. An injection unit; a striking section that is movable in a striking direction and strikes the fastener sent to the ejection section; a motor extending in a first direction perpendicular to the striking direction and configured to drive the striking portion; a magazine portion extending in the first direction and capable of locking the stopper in a state in which the stopper can be moved in the first direction; a main body housing that supports the motor and the impact unit; a detection unit that detects the remaining amount of the fastener, one end of the magazine unit in the first direction is attached to the injection unit, and the other end of the magazine unit in the first direction is open so that the stopper can be loaded therein so that the stopper is engaged with the magazine unit; a holder portion that is provided between the motor and the magazine portion in the impact direction, extends in the first direction, and has one end portion in the first direction attached to the ejection portion independently of the main body housing and the magazine portion; The detection unit is provided in the holder unit.

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