Work machine

Abstract

To provide a work machine improved in convenience.SOLUTION: A nail driving machine 10 has an injection section 44, a striking section 48, a magazine 56, a feeder 72, and a regulation member 86. The injection section 44 ejects a nail N. The striking section 48 strikes the nail N positioned in the injection section 44. The magazine 56 supports a plurality of nails N. The feeder 72 moves to one side in a K direction so as to supply the nail N supported by the magazine 56 to the injection section 44. The regulation member 86 abuts on the feeder 72 so as to regulate the movement of the feeder 72 to the one side in the K direction. The regulation member 86 rotates around a pin 59, so that the regulation member can change its position to a regulation position for regulating the movement of the feeder 72 to the one side in the K direction and an allowable position for allowing the movement of the feeder 72 to the one side in the K direction.SELECTED DRAWING: Figure 5

Description

[Technical Field]

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

[0002] The nail driver described in Patent Document 1 has a feeder that sends nails to an ejection section and a restricting member that can move back and forth in a direction that intersects with the direction in which the feeder moves. The feeder is provided with an engaging section. The restricting member can engage with the engaging section of the feeder. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 7081595 Summary of the Invention [Problem to be solved by the invention]

[0004] In the configuration of Patent Document 1, the direction of movement of the regulating member and the direction of movement of the feeder intersect. Therefore, when regulating the movement of the feeder with the regulating member, the regulating member needs to slide toward the feeder, and frictional resistance acts at the contact point between the regulating member and the feeder. This frictional resistance makes it difficult to slide the regulating member, which may result in an increase in size and mass of the drive mechanism for driving the regulating member, as well as a decrease in the power consumption of the drive mechanism, which may reduce the convenience of the work machine.

[0005] An object of the present invention is to provide a work machine with improved convenience. [Means for solving the problem]

[0006] In one embodiment, the work machine comprises an ejection unit that ejects fasteners, an impact unit that impacts the fasteners located in the ejection unit, a magazine that supports a plurality of the fasteners, a feeder that moves to one side in a first direction to supply the fasteners supported in the magazine to the ejection unit, and a regulating unit that abuts against the feeder to restrict movement of the feeder to one side in the first direction, and the regulating unit is capable of rotating around a rotation axis to change its position between a regulating position that restricts movement of the feeder to one side in the first direction and an allowing position that allows movement of the feeder to one side in the first direction.

[0007] In one embodiment, the work machine has an ejection unit that ejects a fastener, an impact unit that impacts the fastener located in the ejection unit, a supply unit that supplies the fastener to the ejection unit, a drive unit having a rotor that receives electric power and rotates around a rotation axis, a first conversion unit that is arranged on the rotation axis and rotates in response to the driving force of the rotor, thereby causing the impact unit to move in a linear manner, and a second conversion unit that is located between the rotor and the first conversion unit on the rotation axis, moves in a linear manner in response to the driving force of the rotor, and can operate and stop the supply unit. [Effects of the Invention]

[0008] According to the present invention, the convenience of the work machine can be improved. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a right side view showing the appearance of a nail driver according to a first embodiment. FIG. [Figure 2] 1 is a left side view showing the appearance of a nail driver according to a first embodiment. FIG. [Figure 3] FIG. 10 is an explanatory diagram showing a state immediately before the feeder supplies nails in the supply passage to the ejection section. [Figure 4] FIG. 10 is an explanatory diagram showing a state immediately after the feeder supplies nails in the supply passage to the ejection section. [Figure 5] FIG. 2 is a right side view showing the internal structure of the nail driver when the striking unit is in the standby position. [Figure 6] FIG. 2 is a bottom view showing the internal structure of the nail driver when the striking unit is in the standby position. [Figure 7] 10A and 10B are explanatory diagrams showing a rotation state of the restricting member. [Figure 8] FIG. [Figure 9] FIG. [Figure 10] FIG. 2 is a right side view showing the internal structure of the nail driver when the push lever is in the ON state. [Figure 11] FIG. 2 is a bottom view showing the internal structure of the nail driver when the push lever is in the ON state. [Figure 12] FIG. 10 is a right side view showing the internal structure of the nail driver when the restricting member is moved to the permitted position. [Figure 13] 10 is a bottom view showing the internal structure of the nail driver when the restricting member is moved to the permitted position. FIG. [Figure 14] FIG. 10 is a right side view showing the internal structure of the nail driver when the striking part is located at the top dead center and the feeder is moved by the biasing force of the solenoid spring. [Figure 15] 10 is a bottom view showing the internal structure of the nail driver when the striking part is located at the top dead center and the feeder is moved by the biasing force of the solenoid spring. FIG. [Figure 16] FIG. 10 is a right side view showing the internal structure of the nail driver when the striking part strikes the nail and reaches the bottom dead center. [Figure 17] FIG. 10 is a bottom view showing the internal structure of the nail driver when the striking part strikes the nail and reaches the bottom dead center. [Figure 18] FIG. 10 is a right side view showing the internal structure of the nail driver when the switching member moves away from the regulating member as the cam rotates. [Figure 19] 10 is a bottom view showing the internal structure of the nail driver when the switching member moves away from the regulating member as the cam rotates. FIG. [Figure 20] FIG. 10 is a right side view showing the internal structure of the nail driver when the restricting member restricts the feeder. [Figure 21] 10 is a bottom view showing the internal structure of the nail driver when the restricting member restricts the feeder. FIG. [Figure 22] FIG. 10 is a right side view showing the internal structure of the nail driver of the second embodiment when the movement of the feeder is restricted. [Figure 23] FIG. 10 is a right side view showing the internal structure of the nail driver of the second embodiment when the feeder is allowed to move. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, first and second embodiments of the present invention will be described in detail with reference to the drawings. Note that in all drawings referred to in describing each embodiment, the same or substantially the same configurations and elements will be designated by the same reference numerals. Furthermore, as a general rule, configurations and elements that have already been described will not be described repeatedly.

[0011] [First embodiment] 1 and 2 show a nail gun 10 as an example of a work machine according to the first embodiment. In the nail gun 10, when a predetermined condition is satisfied, a nail N (FIG. 3), which is an example of a fastener, is struck by a striking unit 48, which will be described later. As a result, the nail N is ejected from an ejection unit 44 and driven into a mating material G.

[0012] <Direction definition> The direction in which the striking portion 48 strikes the nail N is the up-down direction. The up-down direction is an example of the "second direction." "One side of the second direction" is the downward side. "The other side of the second direction" is the upward side. In other words, the striking portion 48 strikes the nail N downward in the up-down direction. The up-down direction, the front-back direction, and the left-right direction are perpendicular to each other. Note that the definitions of the up-down direction, the front-back direction, and the left-right direction are merely for the convenience of explanation.

[0013] The K direction is a direction that intersects both the up-down direction and the front-rear direction, and is the direction in which a feeder 72 (FIG. 5), which will be described later, moves. The K direction is an example of a "first direction." The K direction is indicated by an arrow K. In the K direction, the side where the ejection unit 44 is located is defined as one side, and the side opposite to the side where the ejection unit 44 is located is defined as the other side. On the other side of the K direction, a plurality of nails N are housed in a drum unit 57, which will be described later. The feeder 72 supplies the nails N to the ejection unit 44 by moving to one side in the K direction.

[0014] (housing) As shown in FIG. 1, the nail gun 10 has a housing 12. The housing 12 is composed of two housing members made of synthetic resin such as nylon or polycarbonate. More specifically, the housing 12 is composed of two housing members that are butted against each other in the left-right direction and fixed with screws (not shown). As a result, each member is housed inside the housing 12.

[0015] The housing 12 has a cylinder portion 14, a motor portion 16, a handle portion 18, an injection portion 44 (described below), an extension portion 24, and an attachment portion 26.

[0016] The cylinder portion 14 extends in the vertical direction. The motor portion 16 extends rearward from the bottom of the cylinder portion 14 in the front-to-rear direction. A striking portion 48, which will be described later, is provided inside the cylinder portion 14. The handle portion 18 extends diagonally upward from the center of the cylinder portion 14 rearward. Details of the injection portion 44 will be described later.

[0017] The extension portion 24 extends diagonally upward and rearward from the rear of the motor portion 16. The mounting portion 26 is connected to the rear end of the handle portion 18 and the rear end of the extension portion 24. A battery pack 28 is detachably attached to the mounting portion 26. A controller 40 is provided inside the mounting portion 26.

[0018] The housing 12 is provided with a trigger switch 19, a striking force generating unit 34, a controller 40, and a push lever 42. In the nailer 10, when a trigger 128 (described later) is operated, the trigger switch 19 is actuated. This causes a predetermined signal for the nailing operation to be output to the controller 40.

[0019] <Impact force generation unit> 1, the impact force generating unit 34 urges the impact unit 48 (described later) downward in the up-down direction. The impact force generating unit 34 is composed of, for example, a cylinder 36, a piston chamber 37, a pressure accumulator vessel 38, and a pressure accumulator chamber 38A. In other words, the impact force generating unit 34 urges the impact unit 48 downward by the pressure of the compressed air in the pressure accumulator chamber 38A.

[0020] The cylinder 36 is provided inside the cylinder portion 14. The pressure accumulator vessel 38 is provided at an upper part inside the cylinder portion 14. The pressure accumulator vessel 38 forms a pressure accumulator chamber 38A. The pressure accumulator chamber 38A is in communication with the piston chamber 37. The piston chamber 37 and the pressure accumulator chamber 38A are filled with compressed air, which is an example of a high-pressure gas.

[0021] (Damper) The damper 39 is provided below the cylinder 36. The damper 39 is a member made of rubber or urethane. When a piston 52, which will be described later, reaches the bottom dead center, the damper 39 comes into contact with the piston 52, thereby preventing the piston 52 from colliding with the cylinder 36.

[0022] 5, the nail gun 10 includes the magazine 56, the feeder 72, the solenoid 82, the solenoid spring 84, the restricting member 86, the switching unit 96, the striking force generating unit 34 (FIG. 1), a driving unit 114, and a cam 118. In addition, the nail gun 10 includes a rotating unit 122 and a trigger 128 (FIG. 1).

[0023] <Injection part> The injection section 44 is located below the cylinder section 14 (Fig. 1). The injection section 44 extends downward from the lower end of the cylinder 36 in the vertical direction. An injection passage 46 is provided inside the injection section 44. A feeder 72, which will be described later, supplies nails N one by one from the magazine 56 to the injection passage 46. In the injection section 44, the nail N receives a striking force from the striking section 48, and the nail N is injected toward the target material G (Fig. 1).

[0024] The ejection unit 44 is provided with a push lever 42. The push lever 42 is held by the ejection unit 44 so that it can move up and down. The push lever 42 is also biased downward by a spring. When the push lever 42 is pressed against the mating material G, it moves upward against the biasing force of the spring. At this time, a predetermined signal is output to the controller 40 (FIG. 1).

[0025] <Striking section> 1, the hitting section 48 has a piston 52 and a driver blade 54. The hitting section 48 hits a nail N (FIG. 3) located in the ejection section 44 toward a target material G. The hitting section 48 can perform a first operation, a second operation, and a third operation, which will be described later.

[0026] <<Piston>> The piston 52 is accommodated inside the cylinder 36 so as to be able to reciprocate up and down. The piston 52 is urged downward in the up and down direction by the pressure in the pressure accumulator chamber 38A. Specifically, the piston 52 reciprocates between top dead center and bottom dead center along the axial direction of the cylinder 36. The piston 52 defines the interior of the cylinder 36, thereby defining a piston chamber 37. The volume of the piston chamber 37 increases and decreases as the piston 52 reciprocates. A seal member is provided on the outer peripheral surface of the piston 52. A driver blade 54 is connected to the underside of the piston 52.

[0027] <<Driver blade>> The driver blade 54 is, for example, a metal plate-shaped member. The driver blade 54 extends downward in the vertical direction from the lower surface of the piston 52. The piston 52 is movable in the vertical direction. Therefore, the driver blade 54 can move back and forth vertically inside the cylinder 36 together with the piston 52. The driver blade 54 is provided with a plurality of racks 55 (FIG. 5) spaced at predetermined intervals in the vertical direction. The driver blade 54 strikes downward the heads of the nails N sequentially fed into the injection passage 46 (FIG. 3).

[0028] <Drive unit> 1 drives the impact unit 48. The drive unit 114 has an electric motor 32, a speed reduction mechanism 41, and a drive shaft 115 (FIG. 5). The drive unit 114 is operated by receiving electric power and is a part that enables the impact unit 48 to move upward in the vertical direction against the biasing force of the impact force generation unit 34.

[0029] The electric motor 32 and the output shaft 32A are housed in the motor section 16. The electric motor 32 has an output shaft 32A and a rotor 32B. The electric motor 32 is operated by power supplied from the battery pack 28. The electric motor 32 is a brushless motor.

[0030] The reduction mechanism 41 includes a planetary gear. The output shaft 32A extends in the front-rear direction. The output shaft 32A is connected to a pinwheel 124 (FIG. 5) described later via the reduction mechanism 41.

[0031] The drive shaft 115 (FIG. 5) has a central axis along the front-rear direction and is rotatably supported by the housing 12. A rotational force is transmitted to the drive shaft 115 from the reduction mechanism 41. The rotational force transmitted to the drive shaft 115 is transmitted to a rotating part 122, which will be described later.

[0032] <Magazine> The magazine 56 is attached to the bottom of the housing 12. In this way, the magazine 56 is supported by the housing 12. The magazine 56 stores and supports a plurality of linked nails N in a roll shape. The plurality of nails N are linked by a linking portion M (Fig. 3) while supported by the magazine 56.

[0033] Specifically, the magazine 56 has a hollow drum portion 57, a guide portion 58 in which a plurality of nails N (FIG. 3) are aligned, and a lid portion 62 (FIG. 3) that faces the guide portion 58 in the left-right direction. A plurality of nails N are stored inside the drum portion 57 in a rolled state. The guide portion 58 extends forward from the drum portion 57 and is connected to the ejection portion 44. Some of the plurality of nails N are positioned in the guide portion 58 with their axial direction perpendicular to the K direction, and are lined up along the K direction.

[0034] A pin 59 (FIG. 5) is provided on the guide portion 58. The pin 59 is an example of a rotation shaft. The pin 59 protrudes to the right from the guide portion 58. The pin 59 is formed in a cylindrical shape having a central axis along the left-right direction.

[0035] As shown in FIG. 3, a supply passage 63 is provided between the guide portion 58 and the lid portion 62. The supply passage 63 extends in the front-rear direction toward the injection passage 46. A plurality of nails N are aligned in the supply passage 63 and fed one by one into the injection passage 46. The injection portion 44 is provided with a rotation shaft 64 that extends in the vertical direction. The lid portion 62 can open and close the supply passage 63 by rotating about the rotation shaft 64. The lid portion 62 is provided with a claw member 66 and a spring 68.

[0036] Claw member 66 has a base 66A that rotates around a rotation shaft 67 that extends in the vertical direction, a plate 66B that extends forward from base 66A, and a claw 66C that protrudes from plate 66B into supply passage 63. Plate 66B is biased toward supply passage 63 by a spring 68. Magazine 56 and a feeder 72, which will be described later, are collectively referred to as supply section 60.

[0037] <Feeder> 3 and 4, the feeder 72 moves to one side in the K direction to supply the nails N supported by the magazine 56 to the ejection unit 44. The feeder 72 performs linear motion in the K direction, and biases the other nails N located on the other side of the nail N located at the end on one side in the K direction among the multiple nails N to one side in the K direction. Specifically, the feeder 72 has a movable member 74, a feeding member 76, and a spring 78.

[0038] <<Moving parts>> The movable member 74 has a fixed portion 74A fixed to a plunger 83 (described later), an abutted portion 74B (FIG. 5) protruding rearward from the fixed portion 74A, and a shaft portion 74C extending in a direction perpendicular to the K direction. The fixed portion 74A can reciprocate in the K direction in accordance with the movement of the plunger 83. The abutted portion 74B abuts against a restricting member 86 (FIG. 5) (described later).

[0039] <<Feeding member>> The feeding member 76 is provided rotatably around the shaft 74C. The feeding member 76 has a first claw 76A and a second claw 76B. The first claw 76A and the second claw 76B protrude into the supply passage 63. The first claw 76A feeds out the first nail N. The second claw 76B feeds out the second nail N.

[0040] <<Spring>> The spring 78 is a torsion spring and is wound around the shaft portion 74 C. The spring 78 biases the feeding member 76 toward the supply passage 63 .

[0041] <Solenoid> The solenoid 82 is an example of a feeder drive unit. The solenoid 82 has a plunger 83. When the solenoid 82 receives power, the plunger 83 operates, causing the feeder 72 to reciprocate in the K direction. The solenoid 82 can urge the feeder 72 toward the other side in the K direction. The solenoid 82 is provided as a drive source independent of the drive unit 114 (FIG. 5), which will be described later.

[0042] <Solenoid spring> The solenoid spring 84 is an example of a feeder elastic body. A plunger 83 is inserted into the solenoid spring 84. The solenoid spring 84 is inserted between the solenoid 82 and the movable member 74, and urges the feeder 72 toward one side in the K direction. The feeder 72 and the plunger 83 are fixed (connected). When the power supply to the solenoid 82 is turned off, the feeder 72 is urged toward one side in the K direction by the urging force of the solenoid spring 84.

[0043] When the power supply to the solenoid 82 is turned off, the plunger 83 moves to one side in the K direction due to the biasing force of the solenoid spring 84. When the plunger 83 (feeder 72) moves to one side, the nail N is sent out to the injection passage 46. Thereafter, when the power supply to the solenoid 82 is turned on, the plunger 83 moves to the other side in the K direction.

[0044] <Regulating member> 5, the restricting member 86 restricts the movement of the movable member 74 to one side in the K direction. In other words, the restricting member 86 is an example of a restricting portion that restricts the movement of the feeder 72 to one side in the K direction. The restricting member 86 restricts the movement of the feeder 72 to one side in the K direction by coming into contact with the feeder 72. The restricting member 86 can be rotated around the pin 59 of the guide portion 58, thereby changing its position between a restricted position and an allowable position.

[0045] The restricting position of the restricting member 86 is a position on the rotation locus of the restricting member 86 about the pin 59 at which the restricting member 86 can restrict movement of the feeder 72 to one side in the K direction. The allowable position of the restricting member 86 is a position on the rotation locus of the restricting member 86 about the pin 59 at which movement of the feeder 72 to one side in the K direction is allowed.

[0046] 7 shows a state in which the restricting member 86 rotates around the pin 59. The solid line indicates a state in which the restricting member 86 is in the restricting position. The two-dot chain line indicates a state in which the restricting member 86 is in the allowable position. The restricting member 86 has a base portion 87, a first arm portion 88, a second arm portion 89, a protruding portion 91, a wall portion 92, an acting portion 93, and an input portion 94.

[0047] The base 87 is formed in a plate shape having a predetermined thickness in the left-right direction. The base 87 is formed in an annular shape when viewed from the left-right direction, and has a hole 87A. The pin 59 is inserted into the hole 87A. This allows the base 87 to rotate around the pin 59.

[0048] The first arm 88 extends from a part of the base 87 in a tangential direction of the pin 59. The second arm 89 extends from the end of the first arm 88 in a direction perpendicular to the first arm 88. The protrusion 91 protrudes downward from a part of the second arm 89. The wall 92 extends to the right from the end of the protrusion 91.

[0049] The acting portion 93 extends downward from the front end of the second arm portion 89. A curved surface 93A that is arc-shaped when viewed from the left and right is formed on the portion of the acting portion 93 from the lower end to the rear end. The acting portion 93 is a portion that abuts against the feeder 72 (FIG. 5) when restricting the movement of the feeder 72. Specifically, a portion of the curved surface 93A abuts against the abutted portion 74B (FIG. 5) of the movable member 74.

[0050] The input portion 94 is a portion that protrudes forward from the upper end of the action portion 93. The input portion 94 is a portion that abuts against a switching member 98 (FIG. 5) described later, thereby receiving force from the switching member 98. Here, when viewed from the left-right direction, the position of the rotation center of the regulating member 86 (the center of the pin 59) is defined as point O, the position where the input portion 94 abuts against the switching member 98 is defined as point A, and the position where the curved surface 93A abuts against the feeder 72 is defined as point B. A distance L1 from point O to point A is an example of a first distance between the pin 59 and the input portion 94. A distance L2 from point O to point B is an example of a second distance between the pin 59 and the action portion 93. The distance L1 is greater than the distance L2.

[0051] <Switching section> 5, the switching unit 96 changes (switches) the position of the restricting member 86 by coming into contact with the restricting member 86. The switching unit 96 has a switching member 98, a guide member 104, a first spring 106, and a second spring 108. The switching unit 96 switches the position of the restricting member 86 between the restricting position and the allowing position by performing linear movement along the up-and-down direction. The switching unit 96 receives a driving force from a driving unit 114 (described later) to switch the position of the restricting member 86 from the restricting position to the allowing position.

[0052] <<Switching member>> As shown in FIG. 8 , the switching member 98 has an extending portion 99, an enlarged width portion 101, a contact portion 102, and a biased portion 103. The extending portion 99 is formed in a plate shape having a predetermined thickness in the front-rear direction and extends in the up-down direction. The enlarged width portion 101 extends downward from the lower end of the extending portion 99 and is wider in the left-right direction than the extending portion 99. The switching member 98 is an example of a first biasing portion that biases the restricting member 86 ( FIG. 5 ) from the restricting position toward the allowing position. Furthermore, the switching member 86 is an example of a second biasing portion that biases the restricting member 86 from the allowing position toward the restricting position.

[0053] The abutting portion 102 is a portion bent rearward at a substantially right angle from the lower end of the widening portion 101, and is formed in a plate shape having a predetermined thickness in the vertical direction. The upper surface of the abutting portion 102 is referred to as the upper surface 102A. The biased portion 103 is a portion that protrudes in the left-right direction from a portion of the extending portion 99 above the widening portion 101 to the right. The lower surface of the biased portion 103 is referred to as the lower surface 103A.

[0054] <<Guide parts>> As shown in Fig. 5, the guide member 104 is formed in the shape of a rectangular tube that penetrates in the vertical direction. As an example, the guide member 104 is attached to the housing 12 (Fig. 1). The guide member 104 has a guide hole 105 that opens in the vertical direction. The extension portion 99 is inserted into the guide hole 105. In other words, the guide member 104 supports the switching member 98 so that the switching member 98 slides in the vertical direction.

[0055] <<First Spring>> The first spring 106 is positioned with its axial direction aligned vertically. The lower end of the first spring 106 is attached to a wall 107 provided on a part of the magazine 56. The upper end of the first spring 106 abuts against a lower surface 103A (FIG. 8). This causes the first spring 106 to bias the switching member 98 upward. The first spring 106 is also an example of a first biasing portion that biases the restricting member 86 from the restricting position toward the allowing position. The first spring 106 biases the restricting member 86 upward via the switching member 98.

[0056] <<Second Spring>> The second spring 108 is positioned with its axial direction aligned vertically. The lower end of the second spring 108 abuts against the wall 92 of the restricting member 86 from above. The upper end of the second spring 108 is attached to a wall 109 provided in a portion of the magazine 56. This causes the second spring 108 to bias the restricting member 86 downward. The second spring 108 is an example of a second biasing portion that biases the restricting member 86 from the allowing position toward the restricting position.

[0057] <Cam> As shown in FIG. 9, cam 118 is an example of a conversion unit that converts the rotational motion of drive unit 114 (FIG. 5) into the vertical linear motion of switching unit 96 (FIG. 5). Cam 118 is a member in which a notch 119 is formed in part of the outer periphery of a circular plate having a predetermined thickness in the front-to-rear direction. Notch 119 has a first cam surface 119A and a second cam surface 119B. First cam surface 119A extends radially inward from outer circumferential surface 118A of cam 118. Second cam surface 119B extends from the radially inner end of first cam surface 119A in a direction perpendicular to first cam surface 119A. The upper end of extension portion 99 (FIG. 8) can abut against outer circumferential surface 118A and notch 119.

[0058] <Rotating part> As shown in FIG. 5, the rotating unit 122 rotates due to the driving force of the driving unit 114. The rotating unit 122 rotates in one direction indicated by arrow R (FIG. 6). Specifically, the rotating unit 122 has a pinwheel 124 and a pinion pin 126. The pinwheel 124 is fixed so as to have the same central axis as the drive shaft unit 115. The pinwheel 124 is provided with a plurality of pinion pins 126 spaced apart within a predetermined angular range in the rotational direction. The plurality of pinion pins 126 can be engaged with and disengaged from the plurality of racks 55 described above. When all of the plurality of pinion pins 126 are disengaged from the racks 55, the rotational force of the pinwheel 124 is not transmitted to the driver blade 54.

[0059] <Trigger> As shown in FIG. 1 , the trigger 128 is provided on the underside of the front end of the handle portion 18. The trigger 128 is an example of an operating portion that is operated by an operator. The trigger 128 is turned ON when driving a nail N into a mating material G. The ON and OFF operations of the trigger 128 are detected by the trigger switch 19. The detected operating state is sent to the controller 40.

[0060] <controller> 1 is a microcomputer including a processor and a memory. The controller 40 functions as a control unit that controls the operation of each part of the nail driver 10. The controller 40 controls the operation of the electric motor 32. Specifically, the controller 40 activates the electric motor 32 when the piston 52, which is located at the bottom dead center, is to be moved to the top dead center.

[0061] When the controller 40 receives both a signal from the operation of the push lever 42 and a signal from the operation of the trigger 128, it supplies a motor current to the electric motor 32 to operate the electric motor 32. This rotates the pinwheel 124 (FIG. 5), pushing up the driver blade 54 and moving the piston 52 from the bottom dead center to the top dead center. The piston 52 then moves from the top dead center to the bottom dead center, causing the driver blade 54 to descend. In other words, the piston 52 makes one reciprocating movement between the bottom dead center and the top dead center, and as this occurs, the nail N is struck by the driver blade 54, causing the nail N to be driven out of the ejection unit 44. In other words, one driving operation of the nail N is executed.

[0062] <Striking part movement and position> In the following description, the position of the upper end of driver blade 54 in the vertical direction is referred to as the position of striking portion 48. Note that the position of striking portion 48 is indicated with reference to the center position of drive shaft portion 115 in the vertical direction.

[0063] When the trigger 128 is turned ON by the operator, the striking unit 48 shown in Fig. 1 moves upward against the biasing force of the striking force generating unit 34 as the striking unit 48 engages with the rotating unit 122 (Fig. 5) and the rotating unit 122 rotates. Specifically, the striking unit 48 moves (rises) from a first position P1 (Fig. 10) to a second position P2 (Fig. 14). This is referred to as the first operation of the striking unit 48.

[0064] As the rotating part 122 rotates, the striking part 48 is disengaged from the rotating part 122, and is moved (lowered) from the second position P2 to the third position P3 (FIG. 16) by the biasing force of the striking force generating part 34 to strike the nail N. This is the second operation of the striking part 48.

[0065] As the rotating part 122 rotates while again engaged with the rotating part 122, the striking part 48 moves (rises) upward in the vertical direction from the third position P3 to the first position P1 against the biasing force of the striking force generation part 34. This is referred to as the third operation of the striking part 48.

[0066] The first position P1 corresponds to a standby position (initial position) of the striking portion 48. The second position P2 corresponds to the top dead center of the striking portion 48. The third position P3 corresponds to the bottom dead center of the striking portion 48. When the striking portion 48 is located at the first position P1, the lower end of the striking portion 48 is located below the upper end of the nails N supplied by the feeder 72 (FIG. 5).

[0067] [Operation of the first embodiment] As shown in Figure 6, when the striking section 48 is in the first position P1, the upward movement of the switching member 98 is restricted by the cam 118. Therefore, as shown in Figure 5, the restricting member 86, which is biased downward by the second spring 108, restricts the movement of the movable member 74 to one side in the direction K. Therefore, the nail N (Figure 5) is not supplied to the ejecting section 44.

[0068] 10 and 11, when the impact part 48 is in the first position P1 and the push lever 42 comes into contact with the target object G, the push lever 42 moves upward due to a reaction force from the target object G. As a result, a detection signal due to the contact between the push lever 42 and the target object G is sent to the controller 40 (FIG. 1).

[0069] 1, when the trigger 128 is turned on, an ON operation signal is sent to the controller 40. When both the detection signal of the push lever 42 and the ON operation signal of the trigger 128 are input, the controller 40 supplies current to the electric motor 32 to operate the electric motor 32.

[0070] 12 and 13, by operating the electric motor 32 (FIG. 1), the cam 118 and the pinwheel 124 are rotated by a predetermined rotation angle in the direction of the arrow R. Then, as shown in FIG. 13, the extension portion 99 enters the notch 119, causing the switching member 98 to move upward.

[0071] Furthermore, as shown in FIG. 12, as the switching member 98 moves upward, the abutting portion 102 abuts against the input portion 94. Therefore, the input portion 94 moves upward and the restricting member 86 rotates from the restricting position to the allowing position. This causes the acting portion 93 to move away from the abutted portion 74B, and the restriction on the movement of the feeder 72 is released. Then, the movable member 74 becomes movable to one side in the direction K, and the feeder 72 supplies nails N to the ejection portion 44. Specifically, as the movable member 74 moves to one side in the direction K due to the biasing force of the solenoid spring 84, the feeding member 76 also moves to one side in the direction K and ejects the nails N into the ejection passage 46. Note that the movement of the movable member 74 is not reflected in FIGS. 12 and 13; the position of the feeder 72 after the movement of the movable member 74 is shown in FIGS. 14 and 15. Furthermore, the striking part 48 has already left the first position P1 due to the rotation of the pinwheel 124 and is now positioned above the upper end of the nail N.

[0072] As shown in FIGS. 14 and 15, when the pinwheel 124 rotates further, the striking part 48 rises to the second position P2.

[0073] Thereafter, when the racks 55 are released from the pinion pins 126, as shown in Figures 16 and 17, the impacting section 48 moves downward by the biasing force of the impact force generating section 34 and strikes the nail N. As a result, the nail N is ejected from the ejecting section 44 toward the target material G. After striking the nail N, the impacting section 48 is positioned at the third position P3.

[0074] 18 and 19, the switching member 98 moves downward by being pressed downward by the cam 118. As a result, the switching member 98 is positioned at the lower end of its movement range.

[0075] 20 and 21, when the solenoid 82 is turned on, the movable member 74 moves to the other side in the K direction. At this time, the downward movement of the restricting member 86 is not restricted by the switching member 98, and therefore the restricting member 86 rotates toward the movable member 74 due to the biasing force of the second spring 108. Then, when the restricting member 86 reaches the restricted position, it restricts the movable member 74 from moving to one side in the K direction. At this time, the rotation of the restricting member 86 is restricted by the abutment between the input portion 94 and the abutting portion 102. In addition, the acting portion 93 abuts against a part of the movable member 74 from one side to the other in the K direction.

[0076] The operation of each part of the nail driver 10 will be summarized below with reference to Figures 1 to 21. Note that individual drawing numbers will be omitted.

[0077] In the nail driver 10, when the restricting member 86 is in the allowable position, the feeder 72 moves to one side in the direction K, thereby supplying the nail N from the magazine 56 to the ejection unit 44. The striking unit 48 strikes the nail N located in the ejection unit 44. As a result, the nail N is ejected from the ejection unit 44.

[0078] On the other hand, when the regulating member 86 is in the regulating position, movement of the feeder 72 to one side in the K direction is regulated. As a result, the supply of nails N from the magazine 56 to the ejection unit 44 is stopped. In order to regulate the movement of the feeder 72 in the K direction by the regulating member 86, it is desirable that the regulating member 86 abuts against an abutment surface that is part of the feeder 72 and extends in a direction intersecting the K direction.

[0079] Here, the position of the restricting member 86 is changed by rotating around the pin 59. In other words, the rotation direction of the restricting member 86 includes a component in the K direction. Therefore, compared to a configuration in which the restricting member 86 abuts on the abutment surface while sliding in a direction perpendicular to the K direction (while generating frictional force), it is possible to suppress the generation of frictional force caused by the abutment between the restricting member 86 and the abutment surface of the feeder 72. This makes it easier to restrict the movement of the feeder 72, thereby improving the convenience of the nail driver 10.

[0080] In the nail gun 10, the distance L1 is greater than the distance L2. In other words, in the restricting member 86, the force point (point A of the input portion 94) is located at a position farther away from the pivot point O, which serves as the fulcrum, than the point of application (point B of the action portion 93). This reduces the magnitude of the force that needs to be input to the input portion 94 to disengage the action portion 93 engaged with (contacting) the feeder 72 from the feeder 72. In other words, the force required for the switching member 98 to move the input portion 94 is reduced, so the spring constant of the spring 106 can be reduced, thereby achieving a reduction in the size and weight of the spring 106 and a reduction in the resistance force (the biasing force with which the spring 106 biases the switching member 98 toward the cam 118) when the cam 118 moves the switching member 98. This reduces the rotational torque of the cam 118 (i.e., reduces the power consumption of the electric motor 32).

[0081] In the nail gun 10, when the restricting member 86 is rotated to the allowable position, the switching member 98 and the first spring 106 urge the restricting member 86 from the restricting position toward the allowable position. This prevents the restricting member 86 from remaining in the restricting position. Furthermore, when the restricting member 86 is rotated to the restricting position, the switching member 98 and the second spring 108 urge the restricting member 86 from the allowable position toward the restricting position. This allows the second spring 108 to absorb the reaction force from the feeder 72 acting on the restricting member 86 when the restricting member 86 abuts against the movable member 74 of the feeder 72, thereby preventing the restricting member 86 from moving away from the feeder 72.

[0082] In the nail driver 10, when the impact force generation unit 34 moves the impact unit 48 upward in the vertical direction, the switching unit 96 receives the driving force of the drive unit 114 and switches the position of the regulating member 86 from the restricting position to the allowing position. In this way, the position of the regulating member 86 can be switched in conjunction with the movement of the impact unit 48, so the position of the regulating member 86 can be switched from the restricting position to the allowing position without providing a new drive source.

[0083] In the nail gun 10, the cam 118 converts the rotational motion of the drive unit 114 into linear motion of the switching unit 96, so the space required inside the housing 12 can be reduced compared to a configuration in which power is transmitted from the drive unit 114 to the regulating member 86 using a bevel gear or the like.

[0084] In the nail gun 10, the solenoid spring 84 biases the feeder 72 toward one side in the K direction, causing the feeder 72 to supply the nail N to the ejection unit 44. The solenoid 82 biases the feeder 72 toward the other side in the K direction, allowing the feeder 72 to supply the next nail N to the ejection unit 44. In this way, biasing forces can be applied to the feeder 72 toward both one side and the other side in the K direction, so that the posture of the feeder 72 can be stabilized when moving in the K direction.

[0085] In the nail gun 10, the solenoid 82 is provided independently of the drive unit 114, so that the operation of moving the striking unit 48 upward in the up-down direction and the operation of urging the feeder 72 toward the other side in the K direction can be performed independently. Therefore, compared to a configuration in which the power of the drive unit that drives the striking unit 48 is transmitted to the feeder 72, a complex link mechanism is not required.

[0086] In the nail driver 10, the feeder 72 moves linearly along the K direction, which reduces the amount of force acting on the nail N in a direction other than the K direction compared to a configuration in which the feeder 72 does not move linearly. This reduces the amount of tilting of the nail N when the nail N is supplied to the ejection unit 44.

[0087] In a configuration in which the lower end of the driver blade 54 is located below the head of the nail N at the first position P1 (standby position), when the feeder 72 feeds the nail N to the ejection unit 44 while the driver blade 54 is at the standby position, there is a possibility that the nail N will collide with the lower end of the driver blade 54. In other words, there is a possibility that the feeding of the nail N will be improper. For this reason, in this configuration, it is necessary to precisely determine the timing at which the feeder 72 feeds the nail N.

[0088] Here, even with the above configuration, in the nail driver 10, the regulating member 86 temporarily restricts the movement of the feeder 72, thereby enabling the timing at which the feeder 72 feeds the nails N to be precisely determined. Also, in the unlikely event that the solenoid 82 malfunctions, the movement of the feeder 72 is restricted by the regulating member 86. Therefore, it is possible to prevent the occurrence of improper feeding of the nails N.

[0089] In the nail driver 10, multiple nails N are connected by the connecting portion M, so that by energizing any one nail N, the remaining nails N can be supplied to the ejection portion 44. Here, since the feeder 72 energizes the nails N other than the nail N to be struck by the striking portion 48, when the nail N is supplied to the ejection portion 44, it is possible to prevent the striking portion 48 and the feeder 72 from coming into contact with each other.

[0090] However, if the connecting portion M is made of a material that is easily deformed, such as wire, and the feeder 72 biases the nails N other than the first one while the first nail N cannot move for some reason, the connecting portion M may be deformed, which may result in poor feeding of the nails N. For example, if the feeder 72 feeds the nails N to the ejection portion 44 while the driver blade 54 is in the standby position, the first nail N may collide with the driver blade 54, causing the feeder 72 to feed the nail N while it is unable to move.

[0091] Even in this configuration, the nail driver 10 has the regulating member 86, which allows the feeder 72 to accurately determine the timing at which the feeder 72 sends the nails N to the ejection unit 44. Furthermore, even in the unlikely event that the solenoid 82 malfunctions, the movement of the feeder 72 in the K direction is regulated by the regulating member 86. This prevents the nails N from being improperly fed.

[0092] Second Embodiment 22 and 23 show a part of the internal structure of a nail driver 130 as an example of a work machine according to the second embodiment. Components that are the same as or similar to those in the first embodiment are given the same reference numerals and redundant explanations will be omitted.

[0093] The nail gun 130 differs from the nail gun 10 (FIG. 1) in that it has a guide unit 132, a drive unit 134, a cam 136, a rotation unit 138, a solenoid 142, a restriction unit 148, and a switching unit 162 instead of the guide unit 58, drive unit 114, cam 118, rotation unit 122, solenoid 82, restriction member 86, and switching unit 96 (FIG. 5). The rest of the configuration is the same as that of the nail gun 10.

[0094] (Guide part) The guide portion 132 extends forward from the drum portion 57 (FIG. 1) and is connected to the ejection portion 44. Some of the nails N are positioned in the guide portion 132 with their axial direction perpendicular to the K direction, and are lined up along the K direction.

[0095] <Drive unit> The drive unit 134 drives the impact unit 48. The drive unit 134 has an electric motor 32, a speed reduction mechanism unit 41 (FIG. 1), and a drive shaft unit 135. The drive unit 134 is operated by receiving electric power and is a component that enables the impact unit 48 to move upward in the vertical direction against the biasing force of the impact force generation unit 34 (FIG. 1). The drive shaft unit 135 has a central axis along the front-rear direction and is rotatably supported by the housing 12 (FIG. 1). A rotational force is transmitted from the speed reduction mechanism unit 41 to the drive shaft unit 135. The rotational force transmitted to the drive shaft unit 135 is transmitted to a rotating unit 138, which will be described later.

[0096] <Cam> The cam 136 is an example of a conversion unit that converts the rotational motion of the drive unit 134 into the vertical linear motion of the switching unit 162. The cam 136 is a member in which a protrusion that bulges outward in the radial direction is formed on part of the outer periphery of a circular plate that has a predetermined thickness in the front-to-rear direction. A rod 164, which will be described later, can abut against an outer periphery surface 136A of the cam 136.

[0097] <Rotating part> The rotating unit 138 rotates by the driving force of the driving unit 134. The rotating unit 138 rotates in one direction. Specifically, the rotating unit 138 has a pinwheel 124 and a pinion pin 126. The pinwheel 124 is fixed to the drive shaft unit 135.

[0098] <Solenoid> The solenoid 142 is an example of a feeder drive unit. The solenoid 142 has a plunger 144. When the solenoid 142 receives power, the plunger 144 operates, causing the feeder 72 to reciprocate in the K direction. The solenoid 142 can urge the feeder 72 toward the other side in the K direction. The solenoid 142 is provided as a drive source independent of the drive unit 134.

[0099] A movable member 146 is fixed to a portion of the plunger 144 in the axial direction. The movable member 146 is attached to the feeder 72. The movable member 146 can abut against a regulating member 156, which will be described later. The movable member 146 is formed in a cylindrical shape with a central axis along the radial direction of the plunger 144. A portion of the outer circumferential surface of the movable member 146 serves as an abutment portion 147. The movable member 146 is biased to one side in the K direction by a solenoid spring 84.

[0100] <Regulation Department> The restricting portion 148 restricts the movement of the movable member 146 to one side in the direction K. In other words, the restricting portion 148 restricts the movement of the feeder 72 to one side in the direction K. The restricting portion 148 has a holder 149 and a restricting member 156.

[0101] Holder 149 has a base 151 fixed to guide portion 132, a first arm 153 extending in the left-right direction from base 151, and a second arm 154 extending downward from the right end of first arm 153. A through-hole 155 penetrating in the left-right direction is formed in second arm 154.

[0102] The restricting member 156 is a plate-like member having a predetermined thickness in the vertical direction. When viewed from the vertical direction, the restricting member 156 is formed in a U-shape that opens to the rear. On the inner surface of the restricting member 156, a restricting surface 157 that is semicircular when viewed from the vertical direction is formed. In addition, cylindrical support shaft portions 158 having a central axis along the horizontal direction are provided on both left and right ends of the restricting member 156.

[0103] The support shaft 158 ​​is inserted into the through hole 155. As a result, the restricting member 156 is supported by the holder 149 so as to be rotatable relative to the holder 149. The restricting member 156 can be rotated around the support shaft 158, thereby changing its position between a restricting position and an allowable position.

[0104] The regulating position of the regulating member 156 is the position of the regulating member 156 when the regulating member 156 is in a position that is aligned in a direction that intersects with the front-rear direction. When the regulating member 156 is in the regulating position, an outer peripheral surface 165 (described later) comes into contact with a regulating surface 157, whereby the regulating member 156 regulates the movement of the rod 164 in the up-down direction.

[0105] The allowable position of the restricting member 156 is the position of the restricting member 156 when the restricting member 156 is in a posture along the front-rear direction. When the restricting member 156 is in the allowable position, the outer peripheral surface 165 of the rod 164 and the restricting surface 157 are arranged substantially parallel to each other, and therefore the rod 164 can move up and down.

[0106] <Switching section> The switching portion 162 has a cylindrical rod 164. The rod 164 is supported by a part of the housing 12 so as to be movable linearly in the vertical direction. The rod 164 is biased toward the cam 136. The upper end of the rod 164 abuts against the cam 136. A part of the outer circumferential surface 165 of the rod 164 can abut against the restriction surface 157 and retract from the restriction surface 157.

[0107] Rod 164 is moved downward in the vertical direction by receiving the driving force of drive unit 134 via cam 136. Furthermore, when the driving force received from cam 136 decreases, rod 164 is moved upward in the vertical direction by receiving an upward biasing force.

[0108] Fig. 22 shows the restricting member 156 in the restricting position. Fig. 23 shows the restricting member 156 in the allowing position. In this way, the switching unit 162 switches the position of the restricting member 156 between the restricting position and the allowing position by moving the rod 164 up and down. Note that when the restricting member 156 is in the restricting position, the rear end of the restricting member 156 abuts against the abutted portion 147, thereby restricting movement of the movable member 146 to one side in the K direction.

[0109] [Operation of the second embodiment] 23, in the nail gun 130, when the restricting member 156 is in the allowable position, the feeder 72 receives the biasing force of the solenoid spring 84 and moves to one side in the direction K, thereby supplying the nail N from the magazine 56 to the ejection unit 44. The striking unit 48 strikes the nail N located in the ejection unit 44. As a result, the nail N is ejected from the ejection unit 44.

[0110] 22, in the nail driver 130, when the restricting member 156 is in the restricting position, the movement of the feeder 72 to one side in the direction K is restricted. As a result, the supply of nails N from the magazine 56 to the ejection unit 44 is stopped.

[0111] Here, the position of the regulating member 156 is changed by rotating around the support shaft 158. In other words, the rotation direction of the regulating member 156 includes a component in the K direction. Therefore, compared to a configuration in which the regulating member 156 abuts on the abutment surface while sliding in a direction perpendicular to the K direction (while generating frictional force), it is possible to suppress the generation of frictional force caused by the abutment between the regulating member 156 and the abutment surface of the feeder 72. This makes it easier to restrict the movement of the feeder 72, thereby improving the convenience of the nail gun 130.

[0112] [Modification of this embodiment] This embodiment is not limited to the first and second embodiments described above, and it goes without saying that various modifications are possible without departing from the spirit of the present invention. Modifications of this embodiment will be described below.

[0113] <Modification> The nail gun 10 shown in FIG. 5 can be considered to have an ejection unit 44, an impact unit 48, a supply unit 50, a drive unit 114, a first conversion unit 123, and a second conversion unit 117.

[0114] The supply unit 50 supplies the nails N to the ejection unit 44. The supply unit 50 has a magazine 56, a feeder 72, and a regulating member 86. The drive unit 114 has a rotor 32B (FIG. 1) that receives electric power and rotates around a rotation axis C (FIG. 1).

[0115] The first conversion unit 123 has a pinwheel 124. The first conversion unit 123 is disposed on the rotation axis C and rotates upon receiving the driving force of the rotor 32B, thereby causing the striking unit 48 to move linearly. The second conversion unit 117 has a cam 118. The second conversion unit 117 is located between the rotor 32B and the first conversion unit 123 on the rotation axis C and is moved linearly upon receiving the driving force of the rotor 32B, and can operate and stop the supply unit 50.

[0116] In the nail driver 10, the second conversion unit 117 receives the driving force of the rotor 32B and moves linearly, thereby operating the supply unit 50. When the supply unit 50 is operated, the nail N is supplied to the ejection unit 44. Then, when the first conversion unit 123 receives the driving force of the rotor 32B and rotates, the impact unit 48 moves linearly and strikes the nail N. As a result, the nail N is ejected from the ejection unit 44.

[0117] Here, the linear movement of the second conversion unit 117 makes it possible to switch between operating the supply unit 50 and stopping the operation of the supply unit 50, eliminating the need to provide a drive source separate from the drive unit 114. This reduces the energy required to operate the supply unit 50, improving the convenience of the nail gun 10. Furthermore, compared to a configuration in which the second conversion unit 117 performs rotational movement, no space is required for the rotational movement, which contributes to the miniaturization of the nail gun 10 and also improves the assembly accuracy of each component.

[0118] <Other variations> In the nail driver 10, the input portion 94 and the action portion 93 may be disposed so that the distance L2 is greater than the distance L1.

[0119] The switching unit 96 is not limited to a unit that switches between the restricting position and the allowing position by linear motion, but may be a unit that switches between the restricting position and the allowing position by linear motion and curved motion, for example. Furthermore, the switching unit 96 is not limited to a spring, and may be an elastic member such as rubber that biases the restricting unit.

[0120] Alternatively, the feeder 72 may be biased toward the other side in the K direction by a spring or the like, and the solenoid 82 may bias the feeder 72 toward one side in the K direction.

[0121] The feeder drive unit may be configured as a transmission mechanism to which drive force is transmitted from drive unit 114, instead of solenoid 82. In other words, drive unit 114 may be used in common as the feeder drive unit. Feeder 72 is not limited to one that moves linearly along the K direction, and may have, for example, a region that moves linearly and a region that moves curvedly.

[0122] The driver blade 54 may be driven in the up and down direction using another solenoid or the like, without using the pinwheel 124. The plurality of nails N do not have to be connected by the connecting portion M. [Explanation of symbols]

[0123] 10...nail gun, 12...housing, 14...cylinder portion, 16...motor portion, 18...handle portion, 19...trigger switch, 24...extension portion, 26...mounting portion, 28...battery pack, 32...electric motor, 32A...output shaft, 32B...rotor, 34...impact force generating portion, 36...cylinder, 37...piston chamber, 38...pressure accumulator vessel, 38A...pressure accumulator chamber, 39...damper, 40...controller, 41...reduction mechanism portion, 42...push lever, 44...injection portion, 46...injection passage, 48...impact portion, 50...supply portion, 52...piston, 54...driver blade, 55...rack, 56...magazine, 57... Drum portion, 58...guide portion, 59...pin, 60...supply portion, 62...lid portion, 63...supply passage, 64...rotating shaft, 66...claw member, 66A...base portion, 66B...plate portion, 66C...claw portion, 67...rotating shaft, 68...spring, 72...feeder, 74...movable member, 74A...fixed portion, 74B...contact portion, 74C...shaft portion, 76...feeding member, 76A...first claw portion, 76B...second claw portion, 78...spring, 82...solenoid, 83...plunger, 84...solenoid spring, 86...regulating member, 87...base portion, 87A...hole portion, 88...first arm portion, 89...second arm portion, 91...projection portion, 92...wall portion, 93 ...action portion, 93A...curved surface, 94...input portion, 96...switching portion, 98...switching member, 99...extension portion, 101...widening portion, 102...contact portion, 102A...upper surface, 103...urged portion, 103A...lower surface, 104...guide member, 105...guide hole, 106...first spring, 107...wall portion, 108...second spring, 109...wall portion, 114...drive portion, 115...drive shaft portion, 117...second conversion portion, 118...cam, 118A...outer peripheral surface, 119...notch portion, 119A...first cam surface, 119B...second cam surface, 122...rotating portion, 123...first conversion portion, 124...pinwheel, 126...pinion pin , 128... trigger, 130... nail gun, 132... guide portion, 134... drive portion, 135... drive shaft portion, 136... cam, 136A... outer peripheral surface, 138... rotating portion, 142... solenoid, 144... plunger, 146... movable member, 147... abutted portion, 148... regulating portion, 149... holder, 151... base portion, 152... support portion, 153... first arm portion, 154... second arm portion, 155... through hole, 156... regulating member, 157... regulating surface, 158... support shaft portion, 162... switching portion, 164... rod, 165... outer peripheral surface, A... point, B... point, C... rotation axis, G... mating material, K... direction, L1... distance, L2... distance,M...connection part, N...nail, O...point, P1...first position, P2...second position, P3...third position, R...arrow,

Claims

1. an ejection unit that ejects the fastener; a striking portion that strikes the stopper located in the ejection portion; a magazine supporting a plurality of said fasteners; a feeder that moves to one side in a first direction to supply the fasteners supported by the magazine to the ejection section; a restricting portion that restricts the feeder from moving to one side in the first direction by contacting the feeder, The regulating portion is capable of rotating about a rotation axis to change its position between a regulating position that regulates the feeder from moving to one side in the first direction and an allowing position that allows the feeder to move to one side in the first direction.

2. a switching portion that changes a position of the restricting portion by contacting the restricting portion; The regulating portion has an input portion that receives a force by contacting the switching portion, and an action portion that contacts the feeder, The work machine according to claim 1 , wherein a first distance from the pivot shaft to the input portion is greater than a second distance from the pivot shaft to the action portion.

3. The switching unit is a first biasing portion that biases the restricting portion from the restricting position toward the allowing position; The work machine according to claim 2 , further comprising: a second biasing portion that biases the restricting portion from the allowing position toward the restricting position.

4. an impact force generating unit that biases the impact portion toward one side in a second direction; a drive unit that receives electric power to operate and is capable of moving the striking unit to the other side in the second direction against the biasing force of the striking force generating unit, The work machine according to claim 3 , wherein the switching unit receives a driving force from the drive unit to switch a position of the regulating unit from the restricting position to the allowing position.

5. A conversion unit converts the rotational motion of the drive unit into the linear motion of the switching unit, The switching unit switches the position of the restriction unit between the restriction position and the allowing position by performing a linear motion. A work machine according to claim 4.

6. a feeder elastic body that biases the feeder toward one side in the first direction; a feeder drive unit that receives electric power to operate and urges the feeder toward the other side of the first direction, The work machine according to claim 1.

7. an impact force generating unit that biases the impact portion toward one side in a second direction; a drive unit that receives electric power to operate and moves the striking unit to the other side in the second direction against the biasing force of the striking force generating unit, The work machine according to claim 6 , wherein the feeder drive unit is provided independently of the drive unit.

8. The work machine according to claim 1 , wherein the feeder performs linear motion along the first direction.

9. A drive unit that operates by receiving electric power; an impact force generating unit that biases the impact portion toward one side in a second direction; A rotating unit that rotates by the driving force of the driving unit; An operation unit operated by an operator, The striking part is a first action in which, when the operating unit is operated, the rotating unit rotates in a state engaged with the operating unit, thereby moving the operating unit from a first position to a second position toward the other side in the second direction against the biasing force of the impact force generating unit; a second action in which the engagement with the rotating part is released as the rotating part rotates, and the striking force generating part moves in the first direction from the second position to a third position to strike the fastener; a third action of moving from the third position to the first position toward the other side in the second direction against the biasing force of the impact force generating unit by rotating the rotating unit while being engaged with the rotating unit again; The work machine according to claim 1, wherein an end portion on one side in the second direction of the striking portion in the first position is located on one side in the second direction of an end portion on the other side in the second direction of the stopper supplied by the feeder.

10. In a state where the stoppers are supported by the magazine, the stoppers are connected to each other in a line in a first direction by connecting portions, The work machine according to claim 9, wherein the feeder biases other fasteners, among the plurality of fasteners, that are located on the other side of the first direction relative to the fastener that is located at an end on one side of the first direction, toward one side of the first direction.

11. an ejection unit that ejects the fastener; a striking portion that strikes the stopper located in the ejection portion; a supply unit that supplies the fastener to the injection unit; A drive unit having a rotor that receives electric power and rotates about a rotation axis; a first conversion unit that is disposed on the rotation axis and rotates by receiving a driving force of the rotor to cause the impact unit to move linearly; A second conversion unit is located between the rotor and the first conversion unit on the rotation axis, and is linearly moved by receiving a driving force of the rotor, and is capable of operating and stopping the supply unit. Work machine.

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