Work machine

Abstract

To improve convenience of a work machine.SOLUTION: A work machine comprises: an injection part 13; a striking part for string a fastener; and a push lever 79 for switching on and off striking by the striking part. The injection part 13 has a blade guide 34 and a guide plate 39 which are combined in a cross direction N1. The push lever 79 is sandwiched between the blade guide 34 and the guide plate 39 and becomes adjacent to a front side of the blade guide 34 in the state that the blade guide 34 and the guide plate 39 are combined. The push lever 79 has a push lever arm 79b which regulates an end 34c of the blade guide 34 from a rear side, and is so held as to be adjacent to the front side of the blade guide 34 even in the state that the blade guide 34 and the guide plate 39 are not combined.SELECTED DRAWING: Figure 5

Description

Technical Field

[0001] The present invention relates to a working machine such as a driving machine.

Background Art

[0002] As an example of a working machine, there is known a working machine (driving machine) including a driver blade for driving a fastener, an injection part into which the fastener is injected, a trigger for controlling the driving operation, and a push lever that can reciprocate in the axial direction of the driver blade and controls the driving operation together with the trigger.

[0003] As such a working machine, for example, Patent Document 1 discloses a working machine in which a push lever constituting an injection part is disposed outside an injection port from which a fastener pops out.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In the working machine described in Patent Document 1 above, since the push lever is disposed outside the injection port so as to surround the injection port, the injection part is enlarged. Therefore, there is a desire to reduce the size of the injection part and improve the convenience of the working machine.

[0006] The injection part includes a push lever, a blade guide and a guide plate for guiding the reciprocating motion of the push lever. In order to reduce the size of the injection part, a structure in which the push lever is interposed between the blade guide and the guide plate can be considered.

[0007] However, in the above structure, when the guide plate is removed from the blade guide during maintenance of the working machine or the like, the push lever may fall off, which may impair the convenience of the working machine.

[0008] An object of the present invention is to provide a working machine with improved convenience.

Means for Solving the Problems

[0009] A working machine according to an embodiment includes an injection part that supports a stopper, a striking part that strikes the stopper located in the injection part in a first direction, and a contact part that contacts a mating member to relatively move in the first direction from an initial position with respect to the injection part and switches the availability of the strike by the striking part. The injection part has a base part and a cover part combined in a second direction orthogonal to the first direction, and a shooting path that becomes a path through which the stopper is injected and a shooting outlet that becomes an outlet of the shooting path are defined by the base part and the cover part. The contact part is held so as to be adjacent to one side of the base part in the second direction by being sandwiched between the base part and the cover part in the second direction in a state where the base part and the cover part are combined. The contact part has a regulating part that regulates an end part of the base part in a third direction orthogonal to the first direction and the second direction from the other side in the second direction. Even in a state where the base part and the cover part are not combined, the contact part is held by the regulating part so as to be adjacent to one side of the base part in the second direction.

[0010] In addition, the working machine according to another embodiment includes an injection part that supports a stopper, a striking part that strikes the stopper located in the injection part in one direction of the first direction, and a contact part that contacts a mating material and thereby relatively moves in the other direction of the first direction from an initial position with respect to the injection part to switch the availability of the strike by the striking part. The injection part has a base part and a cover part that are combined in a second direction orthogonal to the first direction, and a shooting path that serves as a path through which the stopper is injected and a shooting outlet that serves as an outlet of the shooting path are defined by the base part and the cover part. The contact part is held so as to be adjacent to one side of the base part in the second direction by being sandwiched between the base part and the cover part in the second direction in a state where the base part and the cover part are combined. The contact part is held so as to be adjacent to one side of the base part in the second direction in a state where the contact part does not contact the mating material and the base part and the cover part are not combined. When the contact part contacts the mating material and relatively moves in the other direction of the first direction from the initial position with respect to the injection part, the holding with respect to the base part is released.

[0011] Furthermore, the working machine according to another embodiment includes an injection part that supports a stopper, a striking part that strikes the stopper located in the injection part in the first direction, and a contact part that contacts a mating material and thereby relatively moves in the first direction from an initial position with respect to the injection part to switch the availability of the strike by the striking part. The injection part has a base part and a cover part that are combined in a second direction orthogonal to the first direction, and a shooting path that serves as a path through which the stopper is injected and a shooting outlet that serves as an outlet of the shooting path are defined by the base part and the cover part. The contact part is structured to branch into a first part that is disposed on one side of the second direction and is sandwiched between the base part and the cover part at an end of the base part in a third direction orthogonal to the first direction and the second direction, and a second part that is disposed on the other side of the second direction.

Advantages of the Invention

[0012] According to the present invention, the convenience of the working machine can be improved.

Brief Description of the Drawings

[0013]

Figure 1

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Figure 23

Mode for Carrying Out the Invention

[0014] (Embodiment 1) The working machine taken up in the first embodiment is a pneumatic driver 10.

[0015] The driving machine (working machine) 10 of the first embodiment shown in FIGS. 1 to 4 will be described. The driving machine 10 includes a housing 11, a striking part 12, an injection part 13, a power supply part 14, an electric motor 15, a speed reduction mechanism 16, a hoisting mechanism 17, and a pressure accumulator 18. The housing 11 is an outer shell element of the driving machine 10 and has a cylinder case 19, a handle 20, a motor case 21, and a mounting part 22. The cylinder case 19 has a cylindrical shape, and the handle 20 and the motor case 21 are connected to the cylinder case 19. Further, the mounting part 22 is connected to the handle 20 and the motor case 21. Specifically, one end of the mounting part 22 is connected to the handle 20, and the other end on the opposite side is connected to the motor case 21 via an extension part 21a. The power supply part 14 is detachably mounted on the mounting part 22.

[0016] In the first embodiment, the direction in which the cylinder case 19 extends is defined as the vertical direction (first direction) M1, and the direction that is orthogonal to the vertical direction (first direction) M1 and in which the motor case 21 extends is defined as the front-rear direction (second direction) N1. Further, the direction that is orthogonal to both the vertical direction (first direction) M1 and the front-rear direction (second direction) N1 is defined as the left-right direction (third direction) R1.

[0017] A cylinder 27 is accommodated in the cylinder case 19. The cylinder 27 is made of metal, for example, aluminum or iron. The cylinder 27 is positioned in the cylinder case 19 in the direction along the center line A1 and in the radial direction. The center line A1 passes through the center of the cylinder 27. The radial direction is the radial direction of a virtual circle centered on the center line A1.

[0018] The housing 11 has a two-piece structure on the left and right, and the housing 11 located on the right side and the housing 11 located on the left side are fixed by a plurality of screws.

[0019] In addition, a head cover 25 is attached to the cylinder case 19, and an accumulator 18 having a cap 23 is disposed across the inside of the cylinder case 19 and the inside of the head cover 25. A cylinder 27 disposed in the cylinder case 19 is supported by a holder 24, and the holder 24 is connected to the cap 23. Thereby, a pressure chamber 26 is formed across the inside of the accumulator 18 and the inside of the cylinder 27. The pressure chamber 26 is filled with a compressed gas. The compressed gas filled in the pressure chamber 26 biases the striking portion 12 downward in the vertical direction M1.

[0020] The striking portion 12 is disposed across the inside to the outside of the housing 11 and has a piston 28 and a driver blade 29. The piston 28 is operable in the vertical direction M1 within the cylinder 27. The piston 28 and the driver blade 29 are provided as separate members and are connected to each other. Therefore, the striking portion 12 can strike a nail (fastener) 78 by moving downward in the vertical direction M1.

[0021] The ejection portion 13 includes a portion that supports the supplied nail 78. That is, the striking portion 12 strikes the nail 78 located in the ejection portion 13 downward in the vertical direction M1. The ejection portion 13 includes a nose portion 32 that supports the cylinder 27, a blade guide (base portion) 34 that guides the movement of the driver blade 29, and a guide plate (cover portion) 39 that forms an ejection path 37 between the blade guide 34. The nail 78 struck by the striking portion 12 pops out to the outside through an ejection port 38 of the ejection path 37.

[0022] The driver blade 29 is disposed in a guide hole of the bumper support portion 31 and a guide hole 36 of the bumper 35. The striking portion 12 is operable in the vertical direction M1 and is constantly biased downward by the pressure of the compressed gas in the pressure chamber 26. The ejection portion 13 has an ejection path 37 in which the nail 78 is disposed, and the ejection path 37 is provided along the vertical direction M1. The driver blade 29 is operable in the vertical direction M1 within the ejection path 37 and strikes the nail 78 supplied to the ejection portion 13 downward in the vertical direction (first direction) M1.

[0023] In addition, a push lever (contact portion) 79 is attached to the nose portion 32. The push lever 79 can operate within a predetermined range in the vertical direction M1 with respect to the nose portion 32. The push lever 79 is a switch member. Specifically, the push lever 79 can move from the first position (switch-off position) to the second position (switch-on position) by coming into contact with the mating member 30.

[0024] Note that the push lever 79 is constantly biased downward in the vertical direction M1 by a spring (biasing portion) 41 shown in FIG. 5 described later. Therefore, when the tip of the push lever 79 is not pressed against the mating member 30, the push lever 79 is always in the first position (switch-off position). On the other hand, when the tip of the push lever 79 is pressed against the mating member 30 and moves to a predetermined position (second position) above the first position, the switch is turned on.

[0025] Also, an electric motor 15 is disposed within the motor case 21. The electric motor 15 is, for example, a brushless motor, and the rotation axis of the electric motor 15 rotates about the center line A2. Further, a speed reduction mechanism 16 through which power is transmitted from the rotation axis of the electric motor 15 is provided within the motor case 21. The speed reduction mechanism 16 includes a plurality of sets of planetary gear mechanisms and is a mechanism that decelerates and outputs the input element from the electric motor 15 in the power transmission path.

[0026] The power of the electric motor 15 is decelerated by the speed reduction mechanism 16 and transmitted to the hoisting mechanism 17. The hoisting mechanism 17 converts the rotational force of the rotating shaft of the electric motor 15 into a force that biases the striking portion 12 upward in the vertical direction M1. Specifically, the hoisting mechanism 17 includes a pin wheel 50 that engages with the driver blade 29, and the pin wheel 50 rotates by the power of the electric motor 15. That is, the pin wheel 50 rotates by the power of the electric motor 15, and the rotation of the pin wheel 50 pushes up the driver blade 29 after driving upward in the vertical direction M1. The pin wheel 50 is accommodated in the pin wheel accommodating portion 33.

[0027] In addition, a magazine portion 77 is provided beside the motor case 21. The magazine portion 77 can accommodate a plurality of nails 78. The front end portion of the magazine portion 77 is supported by the nose portion 32, and the rear end portion is supported by the mounting portion 22. The magazine portion 77 is provided with a feeder portion 55 that sequentially feeds the plurality of nails 78 accommodated therein toward the shooting path 37, and a sensor portion 57 that detects the remaining amount of the nails 78 accommodated in the magazine portion 77 by detecting the feeder portion 55. The feeder portion 55 is attached to the rail portion 76 of the magazine portion 77 and is movable in the extending direction of the magazine portion 77. The plurality of nails 78 accommodated in the magazine portion 77 are sent to the shooting path 37 of the shooting portion 13 by the feeder portion 55. That is, the nails 78 are supplied from the magazine portion 77 to the shooting portion 13 by the feeder portion 55.

[0028] In addition, the driving machine 10 is provided with a trigger 53 operated by an operator and a trigger sensor (not shown). The trigger 53 and the trigger sensor are provided on the handle 20. The trigger sensor detects the presence or absence of an operating force applied to the trigger 53 and outputs a signal according to the detection result.

[0029] In addition, a controller 82 is provided inside the mounting portion 22. The controller 82 mainly controls the drive of the electric motor 15. The controller 82 has a microprocessor. Also, inside the motor case 21, a circuit board having an inverter circuit is provided. The inverter circuit includes a plurality of switching elements, and each of these plurality of switching elements can be turned on and off. The controller 82 controls the above-mentioned inverter circuit to control the rotation and stop of the electric motor 15, or the rotation speed and rotation direction of the electric motor 15.

[0030] Next, an operation example of the driver 10 will be described. When the controller 82 detects at least one of the fact that no operating force is applied to the trigger 53 or the push lever 79 is not pressed against the workpiece 30, the supply of power to the electric motor 15 is stopped. For this reason, the electric motor 15 stops, and the striking portion 12 stops at the standby position.

[0031] When the controller 82 detects that an operating force is applied to the trigger 53 and the push lever 79 is pressed against the workpiece 30, the controller 82 applies a voltage from the power supply unit 14 to the electric motor 15 to rotate the electric motor 15 forward. Thereby, the driving operation is started. In other words, unless the controller 82 detects both the fact that an operating force is applied to the trigger 53 and the push lever 79 is pressed against the workpiece 30, the controller 82 does not output a signal for applying a voltage from the power supply unit 14 to the electric motor 15, and does not start the driving operation.

[0032] When the driving operation is started, the electric motor 15 starts. The rotational force of the electric motor 15 is transmitted to the pin wheel 50 via the speed reduction mechanism 16. When the pin wheel 50 rotates in a predetermined direction, the striking portion 12 rises. When the striking portion 12 rises, the gas pressure in the pressure chamber 26 rises.

[0033] When the final pin in the rotation of the pinwheel 50 in a predetermined direction separates from the final rack of the driver blade 29, the striking part 12 descends by the gas pressure in the pressure chamber 26. When the striking part 12 descends by the gas pressure in the pressure chamber 26, the driver blade 29 strikes one nail 78 located in the ejection path 37, and the nail 78 is driven into the target member 30.

[0034] Next, the detailed structure of the injection part 13 of the first embodiment shown in FIGS. 5 to 8 will be described. The injection part 13 of the first embodiment is provided with a push lever (contact part) 79 that contacts the target member 30 shown in FIG. 1 and relatively moves in the vertical direction M1 from the initial position with respect to the injection part 13 to switch the availability of striking by the striking part 12. In other words, the push lever 79 is a member that moves from the off position (non-striking position) to the on position (striking available position) by contacting the target member 30 and switches the availability of striking.

[0035] Further, the injection part 13 has a blade guide (base part) 34 and a guide plate (cover part) 39 that are arranged side by side in the front-rear direction (second direction) N1 orthogonal to the vertical direction M1, and are combined in the front-rear direction N1. Then, an ejection path 37 that becomes a passage through which the nail 78 is ejected is defined by the blade guide 34 and the guide plate 39. Further, an ejection port 38 that becomes the exit of the ejection path 37 is defined by the blade guide 34 and the guide plate 39.

[0036] Furthermore, the injection part 13 is provided with an adjuster 43 that can adjust the driving amount of the nail 78 with respect to the target member 30. The adjuster 43 is supported by a support part 34d of the blade guide 34 and a support part 51a of the fixed plate 51 via a movable plate 43b.

[0037] Also, as shown in FIG. 12 to be described later, the push lever 79 is held so as to be adjacent to the front (one) side in the front-rear direction N1 with respect to the blade guide 34 by being sandwiched between the blade guide 34 and the guide plate 39 in a state where the blade guide 34 and the guide plate 39 are combined. That is, the push lever 79 is disposed between the blade guide 34 and the guide plate 39 combined in the front-rear direction N1, and is held so as to be adjacent to the support surface 34e on the front side of the blade guide 34.

[0038] Further, as shown in FIG. 13 to be described later, the push lever 79 has a push lever arm (restricting portion) 79b that restricts the end portion 34c of the blade guide 34 in the left-right direction (third direction) R1 from the rear (the other) side in the front-rear direction N1. That is, the push lever 79 has a push lever arm 79b that restricts the end portion 34c of the blade guide 34 from its rear side. In other words, the push lever 79 is structured to branch into a main body portion 79a as a first portion disposed on the upper side and sandwiched between the blade guide 34 and the guide plate 39, and a push lever arm 79b as a second portion disposed on the lower side. Specifically, the push lever 79 is in a state of sandwiching the end portion 34c of the blade guide 34 between its main body portion 79a and the push lever arm 79b.

[0039] Thereby, the push lever 79 is held so as to be adjacent to the front (one) side in the front-rear direction N1 with respect to the blade guide 34 even in a state where the blade guide 34 and the guide plate 39 are not combined. That is, the push lever 79 is held so as to be adjacent to the front side of the blade guide 34 because the end portion 34c of the blade guide 34 is restricted by the push lever arm 79b from its rear side even in a state where the guide plate 39 is removed and the blade guide 34 and the guide plate 39 are not combined.

[0040] Note that the push lever arm 79b is fixed to the arm portion 79c protruding from the main body portion 79a of the push lever 79 by a bolt 79d. Further, as shown in FIG. 5, the push lever arm 79b is also fixed to the movable shaft 43a (see FIG. 9 described later) of the adjuster 43. Therefore, the movable shaft 43a of the adjuster 43 moves in conjunction with the movement of the push lever 79 in the vertical direction M1.

[0041] Also, as shown in FIG. 5, the blade guide 34 has two claw portions (fixed portions to be) 34b on which a hook (fixing member) 39b for fixing the guide plate 39 to the blade guide 34 is hooked. An operating lever 39a is rotatably attached to the guide plate 39, and a hook 39b is rotatably connected to the lever 39a.

[0042] Therefore, when the operator raises the lever 39a, the hook 39b moves downward in conjunction with the operation of this lever 39a, whereby the hook 39b comes off from the two claw portions 34b of the guide plate 39, and the guide plate 39 can be removed. That is, the guide plate 39 is a plate member that can be removed by the operation of the operator, and is attached so as to rotate about a hinge portion 40 provided in the injection portion 13 as a rotation axis.

[0043] Note that the injection portion 13 can perform maintenance for removing the nail 78, for example, when the nail 78 is clogged in the injection path 37 (injection port 38), and the guide plate 39 is removed when performing the above maintenance.

[0044] FIG. 6 shows a state in which the lever 39a is operated to disengage the hook 39b from the two claw portions 34b of the guide plate 39 and the guide plate 39 is removed from the blade guide 34, and the push lever 79 is not pushed upward in the vertical direction M1.

[0045] As shown in FIG. 8, the push lever arm 79b is fixed to the arm portion 79c protruding from the main body portion 79a of the push lever 79 by a bolt 79d, and further, the push lever 79 is placed on the support surface 34e of the blade guide 34.

[0046] Therefore, by removing the bolt 79d from the arm portion 79c of the push lever 79, the fixing of the push lever 79 and the push lever arm 79b can be released. And even when the push lever 79 shown in FIG. 6 is not pushed upward, the push lever 79 can be moved forward in the front-rear direction N1 to be detached from the blade guide 34. Thus, even when the push lever 79 is not pushed upward, maintenance such as removing the jammed nail 78 can be carried out.

[0047] FIG. 7 shows a state where the lever 39a is operated to remove the hook 39b from the two claw portions 34b of the guide plate 39 and the guide plate 39 is removed from the blade guide 34, and the push lever 79 is in a state of being pushed upward in the vertical direction M1. Even in this state, by removing the bolt 79d from the arm portion 79c of the push lever 79, the fixing of the push lever 79 and the push lever arm 79b can be released, and the push lever 79 can be moved forward in the front-rear direction N1 to be detached from the blade guide 34.

[0048] Therefore, even when the push lever 79 is pushed upward, the push lever 79 can be detached from the blade guide 34, and maintenance such as removing the jammed nail 78 can be carried out.

[0049] That is, regardless of the position of the push lever 79 in the vertical direction M1, by removing the bolt 79d from the arm portion 79c of the push lever 79, the push lever 79 can be detached from the blade guide 34, and maintenance such as removing the jammed nail 78 can be carried out.

[0050] Next, the relationship between the initial position of the push lever 79 shown in FIGS. 9 to 11 and the adjustment of the adjuster 43 will be described. Here, the clamping structure of the push lever 79 by the guide plate 39 and the blade guide 34 shown in FIGS. 12 and 13 will be described in detail using the exploded view of FIG. 8 as well.

[0051] The injection part 13 is provided with an adjuster 43 capable of adjusting the driving depth of the nail 78 with respect to the mating member 30 (see FIG. 1). By adjusting the adjuster 43, as shown in FIGS. 9 and 10, the initial position of the push lever 79 changes. FIG. 9 shows the state where the adjuster is in the most floating state, and FIG. 10 shows the state where the adjuster is in the most sunk state. Further, FIG. 11 shows the state where the adjuster is in the most sunk state and the push lever 79 is pushed in.

[0052] Note that, as shown in FIG. 8, the push lever 79 includes a main body portion 79a to which a push lever arm 79b, which is a restricting portion, is assembled. Specifically, the push lever arm 79b is fixed to an arm portion 79c protruding from the main body portion 79a by a bolt 79d.

[0053] Furthermore, as shown in FIG. 9, the push lever arm 79b is also fixed to the movable shaft 43a of the adjuster 43 by a bolt 43c. Therefore, the push lever 79 and the movable shaft 43a of the adjuster 43 move in conjunction with each other in the vertical direction M1. And a spring (biasing portion) 41 that biases the push lever 79 downward (one side) in the vertical direction M1 from the initial position is provided at an end portion of the movable shaft 43a of the adjuster 43 on the side opposite to the fixed side of the bolt 43c, together with a movable plate 43b. The movable plate 43b fixed to the adjuster 43 is connected to the support portion 34d of the blade guide 34 so as to be movable in the vertical direction M1.

[0054] Thereby, the push lever 79 is constantly biased downward in the vertical direction M1 by the spring 41 via the movable shaft 43a and the push lever arm 79b.

[0055] Also, as shown in FIGS. 12 and 13, the push lever 79 has its main body portion 79a sandwiched between the blade guide 34 and the guide plate 39. Specifically, in the front-rear direction N1, the main body portion 79a of the push lever 79 is sandwiched between the blade guide 34 and the guide plate 39, and is supported by the support surface 34e of the blade guide 34.

[0056] Here, the ejection port 38 is formed by the concave portion 39c of the guide plate 39 and the main body portion 79a of the push lever 79, and the driver blade 29 is disposed at the ejection port 38. Specifically, at the ejection port 38, the driver blade 29 is disposed in the convex ejection path 37 provided on the push lever 79, and moves along the vertical direction M1 under the guidance of this ejection path 37.

[0057] Note that since the push lever 79 also slides along the vertical direction M1, the guide plate 39, the blade guide 34, and the driver blade 29 serve as guides when the push lever 79 slides. However, in the initial state of the push lever 79 (the standby state of the driver blade 29) shown in FIGS. 9 and 10, when the guide plate 39 is opened, the guide on one side (front side) of the push lever 79 is lost.

[0058] Therefore, the push lever 79 sandwiches the end portion 34c of the blade guide 34 by the contact surface 79h between its main body portion 79a and the push lever arm 79b. That is, the push lever 79 is supported by the guide plate 39 and the blade guide 34 in such a manner that the end portion 34c of the blade guide 34 is sandwiched by its main body portion 79a and the push lever arm 79b. In other words, the end portion 34c of the blade guide 34 is regulated by the main body portion 79a and the push lever arm 79b of the push lever 79, and due to the provision of the push lever arm 79b on the push lever 79, the push lever 79 does not float up from the blade guide 34 even when the guide plate 39 is opened.

[0059] Note that as shown in FIGS. 9 to 11, the push lever arm 79b is interposed between the main body portion 79a of the push lever 79 and the spring 41 in the vertical direction M1. In other words, the contact surface 79h of the push lever arm 79b interposed between the main body portion 79a of the push lever 79 and the spring 41 suppresses (restricts) the upward movement of the push lever 79 in the front-rear direction N1.

[0060] Further, when the push lever 79 comes into contact with the mating member 30 shown in FIG. 1, it moves from the initial position to a position above (the other side) in the vertical direction M1. For example, when the push lever 79 comes into contact with the mating member 30 at the initial position P1 in the fully lowered state of the adjuster shown in FIG. 10, the push lever 79 is pushed to the state shown in FIG. 11.

[0061] The blade guide 34 has an engaging portion 34a with which the push lever arm 79b engages. As shown in FIG. 8, the engaging portion 34a is provided at a position above (the other side) that is farther from the ejection port 38 in FIG. 1 than the claw portion 34b in the vertical direction M1. That is, the engaging portion 34a of the blade guide 34 is provided above the claw portion 34b at the end portion 34c of the blade guide 34.

[0062] Then, when the push lever 79 comes into contact with the mating member 30 at the initial position P1 in the fully lowered state of the adjuster shown in FIG. 10, the push lever 79 moves while being restricted by the push lever arm 79b within the range of the engaging portion 34a shown in FIG. 8 and is pushed to the state shown in FIG. 11 and stops.

[0063] That is, the push lever 79 can move while being restricted by the push lever arm 79b within the range of the engaging portion 34a shown in FIG. 8.

[0064] According to the driver 10 of Embodiment 1, in the injection part 13 of the driver 10, even when the guide plate 39 is removed from the blade guide 34 and the guide plate 39 is in an open state, the push lever 79 sandwiches the blade guide 34 by the contact surface 79h between the main body part 79a and the push lever arm 79b. Therefore, it is possible to prevent the push lever 79 from falling off the blade guide 34. Also, it is possible to suppress the push lever 79 from rising from the blade guide 34.

[0065] Therefore, when the guide plate 39 is removed from the blade guide 34 during maintenance or the like of the driver 10, it is possible to prevent the push lever 79 from falling off or rising. As a result, the convenience of the driver 10 can be improved.

[0066] The guide plate 39 may be removed from the blade guide 34 and opened by the operator frequently during maintenance or the like. In the driver 10 of Embodiment 1, since it is possible to prevent the push lever 79 from falling off or rising when the guide plate 39 is opened, it is possible to provide the driver 10 with improved convenience for the operator.

[0067] Also, the push lever 79 has the push lever arm 79b assembled to the main body part 79a, and the end part 34c of the blade guide 34 is sandwiched by the contact surface 79h between the main body part 79a and the push lever arm 79b. Therefore, by releasing the assembly of the push lever 79 and the push lever arm 79b, the push lever 79 can be removed from the blade guide 34. That is, if the assembly of the push lever 79 and the push lever arm 79b is released, the push lever 79 can be easily removed from the blade guide 34.

[0068] Further, the push lever arm 79b is interposed between the main body portion 79a of the push lever 79 and the spring 41 in the vertical direction M1. In other words, the push lever arm 79b interposed between the main body portion 79a of the push lever 79 and the spring 41 suppresses the upward movement of the push lever 79, so that the upward movement of the push lever 79 can be suppressed without separately adding other members. As a result, the number of parts in the driving machine 10 can be reduced.

[0069] Also, in the left - right direction R1, an engaging portion 34a of the blade guide 34 and the push lever arm 79b are provided between the adjuster 43 and the injection path 37. In other words, a regulating mechanism such as the push lever arm 79b that regulates the push lever 79 is provided on the side of the adjuster 43 with respect to the injection path 37. That is, the regulating mechanism such as the push lever arm 79b is provided on the side of the adjuster 43, and by this, the regulating mechanism such as the push lever arm 79b can be arranged beside the adjusting mechanism to effectively utilize the space, so that the driving machine 10 can be prevented from becoming larger. Further, the engaging portion 34a is provided at a position on the upper (the other) side farther from the injection port 38 in FIG. 1 than the claw portion 34b in the vertical direction M1. In other words, the contact surface 79h between the main body portion 79a and the push lever arm 79b sandwiches the end portion 34c of the blade guide 34 above the claw portion 34b. According to this configuration, since the main body portion 79a, the push lever arm 79b, etc. are not located below the claw portion 34b in the injection portion 13, the enlargement of the vicinity of the lower end of the injection portion 13 is suppressed, which contributes to the improvement of the visibility of the driving portion on the mating member 30.

[0070] (Embodiment 2) The working machine described in the second embodiment is also a pneumatic driving machine 10 similar to that in the first embodiment. Since the overall structure of the driving machine 10 described in the second embodiment is the same as that of the driving machine 10 shown in FIGS. 1 - 4, the overlapping description thereof is omitted.

[0071] The features of the injection portion 13 assembled to the driving machine 10 of the second embodiment will be described.

[0072] In the injection part 13 of the second embodiment, as shown in FIG. 22 described later, a rib (restricting part) 79e for restricting the end part 34c of the blade guide 34 in the left-right direction (third direction) R1 from the rear side (the other side) in the front-rear direction N1 is provided on the push lever 79. That is, the push lever 79 has a rib 79e for restricting the end part 34c of the blade guide 34 from its rear side. Specifically, the push lever 79 is in a state where the end part 34c of the blade guide 34 is sandwiched between its main body part 79a and the rib 79e. Note that the rib 79e is integrally provided on the main body part 79a of the push lever 79 via an arm part 79c and an arm fixing part 79f.

[0073] Thereby, even when the blade guide 34 and the guide plate 39 are not combined, the push lever 79 is held so as to be adjacent to the front side (one side) in the front-rear direction N1 with respect to the blade guide 34. That is, even when the guide plate 39 is removed and the blade guide 34 and the guide plate 39 are not combined, since the end part 34c of the blade guide 34 is restricted by the rib 79e from its rear side, the push lever 79 is held so as to be adjacent to the front side of the blade guide 34.

[0074] Note that the rib 79e is formed on the arm part 79c protruding from the main body part 79a of the push lever 79 via the arm fixing part 79f. Specifically, the rib 79e is formed so as to be connected to the arm fixing part 79f and wrap around to the rear side of the end part 34c of the blade guide 34. That is, the cross-sectional shape of the part extending from the arm part 79c to the rib 79e via the arm fixing part 79f is formed to be U-shaped, and the end part 34c of the blade guide 34 and the engaging part 34a are arranged in the U-shaped groove part 79g.

[0075] As shown in Fig. 14, the rib 79e is also fixed to the adjuster 43 via the arm fixing portion 79f. Therefore, the adjuster 43 moves in conjunction with the movement of the push lever 79 in the vertical direction M1.

[0076] Also, in the injection part 13 of the second embodiment, as shown in Fig. 18, a notch 34f is provided at the end 34c of the blade guide 34 at a position above (the other side) in the vertical direction M1 than the engaging part 34a. That is, a notch 34f is provided at the end 34c of the blade guide 34. The notch 34f is provided at a position above the engaging part 34a in the vertical direction M1. The width of the notch 34f in the vertical direction M1 is larger than the width of the rib 79e of the push lever 79 in the vertical direction M1.

[0077] Also, in the injection part 13 of the second embodiment, when the nail 78 (see Fig. 1) is clogged in the injection path 37, it is possible to perform maintenance to remove the nail 78. When performing the above maintenance, as shown in Fig. 15, the guide plate 39 is removed.

[0078] Furthermore, as shown in Fig. 16, the push lever 79 is pushed in until the position of its arm part 79c overlaps with the position of the notch 34f of the blade guide 34. In this state, as shown in Fig. 17, the push lever 79 is lifted while rotating Q1 forward. As a result, since the rib 79e of the push lever 79 passes through the notch 34f, the push lever 79 can be detached from the blade guide 34. Thereby, maintenance such as removing the clogged nail 78 can be performed.

[0079] Next, the initial position and the disengagement position of the push lever 79 shown in Figs. 19 to 21 will be described.

[0080] As shown in FIGS. 22 and 23, the push lever 79 has its main body portion 79a sandwiched between the blade guide 34 and the guide plate 39. Specifically, in the front-rear direction N1, the main body portion 79a of the push lever 79 is sandwiched between the blade guide 34 and the guide plate 39 and is supported by the support surface 34e of the blade guide 34.

[0081] In addition, in the initial state of the push lever 79 (the standby state of the driver blade 29) shown in FIGS. 19 and 20, when the guide plate 39 is opened, the guide on one side of the push lever 79 will disappear.

[0082] Therefore, also in the push lever 79 of the second embodiment, the end portion 34c of the blade guide 34 is sandwiched between the main body portion 79a and the rib 79e thereof. That is, the push lever 79 is supported by the guide plate 39 and the blade guide 34 in such a manner that the end portion 34c of the blade guide 34 is sandwiched between the main body portion 79a and the rib 79e. In other words, the end portion 34c of the blade guide 34 is restricted by the main body portion 79a and the rib 79e of the push lever 79, and also because the rib 79e is provided on the push lever 79, the push lever 79 will not float up from the blade guide 34 even when the guide plate 39 is opened.

[0083] When the push lever 79 contacts the mating member 30 shown in FIG. 1, it moves from the initial position to a position above (the other side) in the vertical direction M1. For example, when the push lever 79 contacts the mating member 30 at the initial position P1 in the fully depressed state of the adjuster shown in FIG. 19, the push lever 79 is pushed in to the state shown in FIG. 20. At this time, the blade guide 34 has an engaging portion 34a with which the push lever arm 79b engages. As shown in FIG. 18, the engaging portion 34a is provided at a position above the claw portion 34b and farther from the ejection port 38 in FIG. 1. That is, the engaging portion 34a of the blade guide 34 is provided above the claw portion 34b at the end portion 34c of the blade guide 34.

[0084] When the engaging portion 34a is disengaged from the push lever 79 as the push lever 79 moves from the initial position P1 to the release position P2 shown in FIG. 20. Specifically, at the initial position P1 in the adjuster most floating state shown in FIG. 19, the push lever 79 is pushed in until the position of the rib 79e of the push lever 79 overlaps the position of the notch 34f of the blade guide 34 as shown in FIG. 21. Alternatively, at the initial position P1 in the adjuster most sinking state shown in FIG. 20, the push lever 79 is pushed in until the position of the rib 79e of the push lever 79 overlaps the position of the notch 34f of the blade guide 34 as shown in FIG. 21. In this state (the state of FIG. 23), the guide plate 39 is opened, and then, by lifting the push lever 79 forward, the rib 79e of the push lever 79 passes through the notch 34f, so that the push lever 79 can be detached from the blade guide 34. That is, the engagement between the engaging portion 34a of the blade guide 34 and the push lever 79 can be released.

[0085] According to the driving machine 10 of the second embodiment, in the injection part 13 of the driving machine 10, even in a state where the guide plate 39 is removed from the blade guide 34 and the guide plate 39 is opened, the push lever 79 sandwiches the blade guide 34 by the rear rib 79e, so that the push lever 79 can be prevented from falling off the blade guide 34. Also, the push lever 79 can be prevented from rising from the blade guide 34.

[0086] Therefore, when the guide plate 39 is removed from the blade guide 34 during maintenance or the like of the driving machine 10, the push lever 79 can be prevented from falling off or rising. As a result, the convenience of the driving machine 10 can be improved.

[0087] The guide plate 39 may be frequently removed from the blade guide 34 by an operator for maintenance or the like and opened. Also in the driving machine 10 of the second embodiment, when the guide plate 39 is opened, it is possible to suppress the push lever 79 from falling off or rising, so that a driving machine 10 with improved convenience for the operator can be provided.

[0088] Further, since the rib 79e of the push lever 79 is integrally provided on the main body portion 79a of the push lever 79, it is not necessary to use a fixing member such as a screw for attaching the rib 79e, and the number of parts can be reduced.

[0089] Also, since the notch 34f is provided in the blade guide 34, the push lever 79 can be assembled on the blade guide 34 even after the push lever 79 is assembled to the adjuster mechanism, and the assemblability of the driving machine 10 can be improved.

[0090] The present invention is not limited to the above embodiments, and various modifications can be made without departing from the gist thereof. For example, in the second embodiment above, the case where the rib 79e of the push lever 79 is integrally provided on the main body portion 79a of the push lever 79 has been described, but the rib 79e may be attached to the main body portion 79a of the push lever 79 with a fixing member such as a screw.

Explanation of reference numerals

[0091] 10 … Driving machine (working machine), 11 … Housing, 12 … Striking part, 13 … Injection part, 14 … Power supply part, 15 … Electric motor, 16 … Reduction mechanism, 17 … Hoisting mechanism, 18 … Accumulator, 19 … Cylinder case, 20 … Handle, 21 … Motor case, 21a … Extension part, 22 … Mounting part, 23 … Cap, 24 … Holder, 25 … Head cover, 26 … Pressure chamber, 27 … Cylinder, 28 … Piston, 29 … Driver blade, 30 … Counter material, 31 … Bumper support part, 32 … Nose part, 33 … Pin wheel housing part, 34 … Blade guide (base part), 34a … Engaging part, 34b … Claw part (fixed part), 34c … End part, 34d … Support part, 34e … Support surface, 34f … Notch, 35 … Bumper, 36 … Guide hole, 37 … Injection path, 38 … Injection port, 39 … Guide plate (cover part), 39a … Lever, 39b … Hook (fixing member), 39c … Concave part, 40 … Hinge part, 41 … Spring (biasing part), 43 … Adjuster, 43a … Movable shaft, 43b … Movable plate, 43c … Bolt, 50 … Pin wheel, 51 … Fixed plate, 51a … Support part, 53 … Trigger, 55 … Feeder part, 57 … Sensor part, 76 … Rail part, 77 … Magazine part, 78 … Nail (fastener), 79 … Push lever (contact part), 79a … Body part, 79b … Push lever arm (restricting part), 79c … Arm part, 79d … Bolt, 79e … Rib (restricting part), 79f … Arm fixing part, 79g … Groove part, 79h … Contact surface, 82 … Controller, A1, A2 … Center line, M1 … Vertical direction (first direction), N1 … Front-rear direction (second direction), P1 … Initial position, P2 … Release position, Q1 … Rotation, R1 … Left-right direction (third direction)

Claims

1. An injection part for supporting a stopper; A striking part for striking the stopper located in the injection part in a first direction; A contact part that contacts a mating member and thereby relatively moves in the first direction from an initial position with respect to the injection part to switch the availability of the strike by the striking part, comprising: The injection part has a base part and a cover part combined in a second direction orthogonal to the first direction, and a shooting path that becomes a path through which the stopper is injected and a shooting outlet that becomes an outlet of the shooting path are defined by the base part and the cover part; The contact part is held so as to be adjacent to one side in the second direction with respect to the base part by being sandwiched between the base part and the cover part in the second direction in a state where the base part and the cover part are combined; The contact part has a restricting part that restricts an end part of the base part in a third direction orthogonal to the first direction and the second direction from the other side in the second direction, and is held by the restricting part so as to be adjacent to one side in the second direction with respect to the base part even in a state where the base part and the cover part are not combined, a working machine.

2. The contact part includes a main body part to which the restricting part is assembled, and the end part of the base part is clamped by the main body part and the restricting part, the working machine according to claim 1.

3. It has a biasing part for biasing the contact part from the initial position to one side in the first direction, The main body part is sandwiched between the base part and the cover part, The restricting part is interposed between the main body part and the biasing part, the working machine according to claim 2.

4. The base part has an engaging part with which the restricting part engages, and a fixed part to which a fixing member for fixing the cover part to the base part is fixed, The engaging part is provided at a position on the other side that is farther from the shooting outlet than the fixed part in the first direction, the working machine according to claim 1.

5. When the contact part moves from the initial position to a release position, the engagement between the engaging part and the contact part is released, the working machine according to claim 4.

6. When the contact part contacts a mating member, it moves from the initial position to a position on the other side in the first direction, the working machine according to claim 1.

7. The base part has a notch at a position on the other side in the first direction than the engaging part, the working machine according to claim 4.

8. It is provided with an adjuster capable of adjusting the driving depth of the stopper, The working machine according to claim 4, wherein the engaging portion is provided between the adjuster and the injection path in the third direction.

9. An injection part for supporting a stopper, A striking part for striking the stopper located in the injection part to one side in the first direction, A contact part that contacts a mating member, relatively moves to the other side in the first direction from the initial position with respect to the injection part, and switches the availability of the striking by the striking part, The injection part has a base part and a cover part combined in a second direction orthogonal to the first direction, and an injection path that becomes a path for injecting the stopper by the base part and the cover part and an injection port that is an outlet of the injection path are defined, The contact part is held so as to be adjacent to one side in the second direction with respect to the base part by being sandwiched between the base part and the cover part in the second direction in a state where the base part and the cover part are combined, The contact part is not in contact with a mating member, is held so as to be adjacent to one side in the second direction with respect to the base part in a state where the base part and the cover part are not combined, contacts the mating member, and relatively moves to the other side in the first direction from the initial position with respect to the injection part, thereby releasing the holding with respect to the base part. Working machine.

10. The contact part has a restricting part that restricts an end part of the base part in a third direction orthogonal to the first direction and the second direction from the other side in the second direction, The base part has an engaging part with which the restricting part engages, and a notch provided at a position on the other side in the first direction than the engaging part and through which the restricting part can pass. The working machine according to claim 9.

11. An injection part for supporting a stopper, A striking part for striking the stopper located in the injection part in the first direction, A contact part that contacts a mating member, relatively moves in the first direction from the initial position with respect to the injection part, and switches the availability of the striking by the striking part, The injection part has a base part and a cover part combined in a second direction orthogonal to the first direction, and an injection path that becomes a path for injecting the stopper by the base part and the cover part and an injection port that is an outlet of the injection path are defined, The contact portion is structured to branch into a first portion disposed on one side in the second direction at an end of the base portion in a third direction orthogonal to the first direction and the second direction and sandwiched between the base portion and the cover portion, and a second portion disposed on the other side in the second direction, in a working machine.

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