JP5589804B2 - Driving machine - Google Patents

Description

  The present invention relates to a driving machine for driving a stopper such as a nail or a staple into a member.

In a conventional nailing machine, if it protrudes from the vicinity of the nail injection port and is pressed against a material to be driven such as wood, both the pressing operation of the push lever that slides in the axial direction of the main body and the pulling operation of the trigger are performed. An activation device is known in which the nail driving operation starts when
Further, a nailing machine having a mechanism for switching operation modes according to the selection of an operator is known (see, for example, Patent Document 1).

US Pat. No. 5,551,620

  However, the nailing machine described in Patent Document 1 has a problem that assembly is not easy because a complicated mechanism for switching operation is provided inside the trigger.

  The present invention has been made in view of such problems, and an object thereof is to provide a driving machine having an operation mode switching mechanism that does not have a complicated structure inside a trigger.

In order to achieve the above object, a driving machine according to the present invention includes:
A push lever that can move between top dead center and bottom dead center;
A push lever interference portion provided on the push lever and movable together with the push lever;
A trigger provided on the main body so as to be rotatable around a rotation shaft portion;
A trigger interference unit provided on the trigger and movable with the trigger;
A switching unit that switches the position of the rotating shaft portion between a first position and a second position;
With
In the first position, the trigger interference unit moves the push lever when the push lever moves between the bottom dead center and the top dead center in a state where the trigger pulling operation is not performed. Located outside the passing area through which the interference part passes, and in a state where the trigger pulling operation is performed, located inside the passing area,
In the second position, the trigger interference unit is located outside the passing region regardless of the state of the trigger pulling operation,
When the position of the rotary shaft portion is switched to the first position by the switching unit, it can be driven only when a trigger pulling operation is performed after the push lever pressing operation, and the position of the rotary shaft portion is When switched to the second position, it can be driven regardless of the order of the pushing operation of the push lever and the pulling operation of the trigger,
It is characterized by that.

The switching unit has a knob that is rotatably provided to the main body together with the rotating shaft unit,
A central axis of rotation of the knob may be located a predetermined distance away from the rotary shaft portion.

  According to the present invention, it is possible to provide a driving machine having an operation mode switching mechanism that does not have a complicated structure inside the trigger.

It is sectional drawing of the nail driver which concerns on embodiment of this invention. FIG. 6 is a cross-sectional view of a main part in a state where a trigger pulling operation and a push lever pressing operation are not performed in the first operation mode. It is a perspective view of a trigger main-body part. It is a perspective view of a rotating shaft part and a switching knob. (A) is principal part sectional drawing in the cutting line AA of FIG. 2, (b) is principal part sectional drawing in the cutting line BB of FIG. It is a figure showing the state by which the pushing operation of the push lever was performed from the state of FIG. FIG. 7 is a diagram illustrating a state in which a trigger pulling operation is performed from the state of FIG. 6. It is a figure showing the state from which the pushing operation of the push lever was cancelled | released from the state of FIG. FIG. 3 is a diagram illustrating a state where a push lever pressing operation is performed after a trigger pulling operation is performed from the state of FIG. 2. FIG. 6 is a cross-sectional view of a main part in a state where a trigger pulling operation and a push lever pressing operation are not performed in a second operation mode. FIG. 11 is a diagram illustrating a state where a trigger pulling operation has been performed from the state of FIG. 10. FIG. 12 is a diagram illustrating a state where a push lever pressing operation is performed from the state of FIG. 11.

  A driving machine according to an embodiment of the present invention will be described below with reference to the drawings. In the present embodiment, a nailing machine 1 for driving a nail 2 serving as a stopper into a workpiece 3 will be described as an example of a driving machine. For clarity of explanation, in the present embodiment, the direction in which the stopper is driven out from the nail driver 1 (the driving direction) is referred to as the downward direction, and the opposite direction is referred to as the upward direction.

  Further, the nail driver 1 according to the present embodiment can be operated by switching between the “first operation” and the “second operation” by operating a switching knob 213 described later. Here, the “first operation” means that the nail 2 is driven only when the trigger 210 is pulled after the push lever 320 is pressed, and then the trigger 210 is released and then the trigger 210 is pulled again. The driving operation of driving the next nail by performing the operation shall be shown. The “second operation” refers to a state in which the trigger 210 is being pulled and the push lever 320 is pressed a plurality of times, or the push lever 320 is being pressed. Suppose that a pulling operation of the trigger 210 is performed a plurality of times to indicate a driving operation for driving a plurality of nails continuously. Hereinafter, in the nailing machine 1, a state in which the first operation can be performed is referred to as a “first operation mode”, and a state in which the second operation can be performed is referred to as a “second operation mode”.

  FIG. 1 is a side sectional view of a nail driver 1 according to an embodiment of the present invention. As shown in FIG. 1, the nail driver 1 includes a main body (housing) 100, a handle part 200 extending in a direction substantially orthogonal to the vertical direction, and a nose part 300 positioned at the lower end of the main body 100. Is provided. In order to accumulate compressed air from a compressor (not shown), a pressure accumulating chamber 400 is formed in the handle portion 200 and the main body 100 of the nailing machine 1. The pressure accumulating chamber 400 is connected to the compressor via an air hose (not shown).

  The main body 100 includes a cylindrical cylinder 110, a piston 120 that can slide up and down (reciprocate) in the cylinder 110, and a driver blade 130 that is formed integrally with the piston 120.

  The cylinder 110 slidably supports the piston 120 on the inner surface. A return air chamber 140 for storing compressed air for returning the driver blade 130 to the top dead center is formed on the outer periphery of the lower end of the cylinder 110. A check valve 111 is provided in the center of the cylinder 110 in the axial direction, and an air passage 112 that allows inflow of compressed air from the inside of the cylinder 110 to the return air chamber 140 outside the cylinder 110 is formed. . An air passage 113 that is always open to the return air chamber 140 is formed below the cylinder 110. A piston bumper 150 made of an elastic body such as rubber and having a through-hole through which the driver blade 130 is inserted is provided at the lower end of the cylinder 110 to absorb surplus energy after the piston 120 is driven downward. Yes.

  The piston 120 is disposed in the cylinder 110 so as to be slidable in the vertical direction. The driver blade 130 is formed integrally with the piston 120 so as to extend downward from the approximate center of the lower surface of the piston 300. The cylinder 110 is partitioned by a piston 120 into a piston upper chamber and a piston lower chamber. At the time of driving, when compressed air flows into the piston upper chamber, the driver blade 130 is rapidly lowered together with the piston 120 and slides in the injection passage 330 to give driving force to the nail 2.

  On the upper outer periphery of the cylinder 110, there are a main valve chamber 161, a spring 162 that biases the cylinder 110 downward, an air passage 163 that connects the piston upper chamber and the atmosphere, and an exhaust valve 164 that opens and closes the air passage 163. And are provided.

  The handle part 200 is a part held by an operator. As shown in an enlarged view in FIG. 2, the handle portion 200 connected to the main body 100 includes a trigger 210 that is operated by an operator, a trigger spring 220 that biases the trigger 210 downward, and a pressure accumulating chamber 400. (Refer to FIG. 1) Trigger valve 230, which is a switching valve that communicates with and sends compressed air in and out, trigger plunger 240 that switches opening and closing of trigger valve 230, and main valve chamber 161 communicates with and sends compressed air. A push lever valve 250 that is a switching valve, a push lever plunger 260 that switches opening and closing of the push lever valve 250, an air passage 270 that connects the trigger valve 230 and the push lever valve 250, a push lever valve 250, and a main valve chamber 161 And an air passage 280 connecting the exhaust valve 164 Equipped with a.

  The trigger 210 is operated by an operator to switch opening and closing of the trigger valve 230 via the trigger plunger 240. The trigger 210 includes a trigger main body 211, a rotary shaft 212, and a switching knob 213.

  The trigger main body 211 is provided so as to be rotatable with respect to the main body 100 via the rotation shaft 212. FIG. 3 shows a perspective view of the trigger main body 211. As shown in FIGS. 2 and 3, the trigger body 211 is formed of a rotation center part 211a, a trigger interference part 211b, an operation part 211c, and a contact part 211d.

  The rotation center portion 211 a is a portion that becomes a rotation center in the pulling operation of the trigger 210. The rotation center portion 211a is formed with a hole through which a first rotation shaft portion 212a of the rotation shaft portion 212 described later is inserted, and rotates together with the first rotation shaft portion 212a.

  In the first operation mode, the trigger interference unit 211b interferes with the push lever 320 to prevent movement between the top dead center and the bottom dead center of the push lever 320. Specifically, the trigger interference part 211b is formed to protrude in a counterclockwise direction at a position away from the rotation center axis of the rotation center part 211a by a predetermined distance. In the first operation mode, the trigger interference unit 211b is configured so that the push lever interference unit 321b of the push lever 320 has a top dead center and a bottom dead center as shown in FIG. It is located outside the area (passing area) that passes when moving between the two. Then, the trigger interference unit 211b moves counterclockwise by the pulling operation of the trigger 210, and is located inside the passing region as shown in FIG. Therefore, the push interference lever 211b moves from the top dead center to the bottom dead center or from the bottom dead center to the top dead center as shown in FIGS. It interferes with the interference part 321b and prevents the push lever 320 from moving. In addition, the trigger interference unit 211b is located outside the passage region as shown in FIGS. 10 and 11 regardless of whether or not the trigger 210 is pulled in the second operation mode.

  The operation unit 211c is a part that is operated when an operator performs a pulling operation of the trigger 210. The abutting portion 211d is moved when the body portion 211 of the trigger 211 moves counterclockwise around the rotation center portion 211a against the urging force of the spring 220, that is, upward, by the pulling operation of the trigger 210. This is the portion that contacts the lower end of the trigger plunger 240. The abutting portion 211d moves the valve member 231 of the trigger valve 230 upward against the pressure of the compressed air via the trigger plunger 240. As a result, the trigger valve 230 is opened.

The rotation shaft portion 212 is a portion that functions as a rotation shaft of the trigger main body portion 211 and the switching knob 213. The rotating shaft 212 is rotatably provided on the main body 100. Specifically, as shown in a perspective view in FIG. 4, the rotation shaft portion 212 includes a first rotation shaft portion 212 a that is a rotation shaft of the trigger main body portion 211 and a second rotation shaft that is a rotation shaft of the switching knob 213. Part 212b. FIGS. 5A and 5B are diagrams showing the positions of the first rotation shaft portion 211a and the second rotation shaft portion 212b in the first operation mode and the second operation mode, respectively. As shown in FIGS. 5A and 5B, the central axis O ₁ of the first rotary shaft portion 212a is located in parallel with the central axis O _{2 of} the second rotary shaft portion 212b and separated by a predetermined distance. Accordingly, when with the switching knob 213 is a second rotation shaft 212b rotates, the first rotation shaft 212a is rotated moving the center axis O ₂ of the second rotation shaft 212b as the center. In the first operation mode, the first rotating shaft portion 212a is positioned such that the trigger interference portion 211b moves from the outside to the inside of the passage region by the pulling operation of the trigger 210. In the second operation mode, the first rotating shaft portion 212a is in the first operation mode so that the trigger interference portion 211b is positioned outside the passing region regardless of whether the trigger 210 is pulled. It is located farther from the push lever 320 than the position.

  The switching knob 213 is a knob that an operator operates to switch between the first operation mode and the second operation mode. The switching knob 213 is provided so as to be rotatable with respect to the main body 100 together with the second rotation shaft portion 212 b of the rotation shaft portion 212.

  As shown in FIG. 2, the trigger valve 230 includes a substantially spherical valve member 231 and a locking portion 232 that locks the valve member 231. The valve member 231 is housed in a pressure accumulation chamber 400 and a trigger valve 233 that communicates with an air passage 270 described later. The locking portion 232 is an edge portion of the opening 234 that opens downward from the trigger valve chamber 233. The diameter of the opening 234 is smaller than the diameter of the valve member 231. Therefore, when the valve member 231 receives a downward pressure due to the pressure of the compressed air in the pressure accumulating chamber 400, the valve member 231 is locked to the locking portion 233, and the opening 234 is closed. That is, the trigger valve 230 is closed. Further, when the valve member 231 is moved upward against the compressed air in the pressure accumulating chamber 400 by the trigger plunger 240, the valve member 231 is separated from the locking portion 233 and the opening 234 is opened. That is, the trigger valve 230 is opened.

  The trigger plunger 240 is provided below the valve member 231 of the trigger valve 230 so as to be movable up and down. When the lower end portion of the trigger plunger 240 is pressed upward by the trigger 210, the trigger plunger 240 presses the valve member 231 of the trigger valve 230 in the upward direction against the pressure of the compressed air, thereby opening the trigger valve 230.

  The push lever valve 250 is a valve that switches inflow of compressed air into the air passage 280 by the push lever 320. The push lever valve 250 includes a bush 251, a valve member 252, and a spring 253.

  The bush 251 is formed in a tubular shape having a passage 251 a extending substantially vertically, and is fixed to the main body 100. The passage 251a guides when the push lever plunger 260 slides in the vertical direction. A locking portion 251 c that locks the valve member 242 is formed in the opening 251 b formed at the upper end of the bush 251.

  The valve member 252 moves in the vertical direction, and opens or closes the opening 251b at the upper end of the bush 251. In a state where the valve member 251 is locked to the locking portion 251c of the bush 251, the opening 251b is closed, and the push lever valve 250 is closed. In addition, the valve member 252 opens the opening 251b while not being locked to the locking portion 251c, and the push lever valve 250 is opened. Further, the valve member 252 is biased downward by a spring 253.

  One end of the spring 253 is fixed to the main body 100, and the other end urges the valve member 252 downward.

  The push lever plunger 260 moves up and down together with the push lever 320 to open and close the push lever valve 250. The push lever plunger 260 is arranged to slide in the passage 251a of the bush 251. The push lever plunger 260 is biased downward by a spring 261. When the push lever 320 is moved upward, the push lever plunger 260 is moved upward in the passage 251a against the urging force of the spring 261. Then, the upper end portion of the push lever plunger 260 comes into contact with the lower end portion of the valve member 252 and moves the valve member 252 upward against the urging force of the spring 253. As a result, the push lever valve 250 is opened.

  As shown in FIG. 1, the nose portion 300 guides the nail 2 and the driver blade 130 so that the driver blade 130 can suitably contact the nail 2 and can be driven into a desired position of the workpiece 3. It has a function. The nose portion 300 includes an injection portion 310 having an injection passage 311 in which the nail 2 and the driver blade 130 are guided, and a push lever 320 that can move in the vertical direction along the outer surface of the injection portion 310. . An upper end portion of the injection unit 310 is formed in a flange shape and is connected to an open portion at a lower portion of the main body 100. In addition, a magazine 500 that accommodates a plurality of nails 2 is attached to the injection unit 310. The nail 2 is sequentially fed from the magazine 500 to the injection passage 311 by a feeder that can reciprocate by compressed air and an elastic member.

  The push lever 320 includes a push lever main body 321 that contacts the workpiece 3 and a push lever spring 322 that urges the push lever main body 321 downward.

  The push lever body 321 is connected to the body 100 via a push lever spring 322. When waiting for the driving operation, the lower end portion of the push lever 321 protrudes from the lower end of the injection portion 310 as shown in FIG. Further, at the time of driving operation to the workpiece 3, the main body 100 is pressed toward the workpiece 3, so that the push lever body 321 receives a drag from the workpiece 3, The push lever spring 322 moves upward relative to the main body 100 and the handle portion 200 against the urging force of the push lever spring 322.

  As shown in FIG. 2, a contact portion 321a and a push lever interference portion 321b are formed at the upper end portion of the push lever main body portion 321.

  The abutting portion 321 a is an upper end portion of the push lever main body portion 321 and is provided so as to abut on a lower end portion of the push lever plunger 260. When the push lever 320 is pressed against the workpiece 3, the push lever 321 moves upward. At this time, the contact portion 321a moves the push lever plunger 260 upward.

  The push lever interference portion 321 b is formed so that the space between the main body 100 and the trigger 210 extends upward along the main body 100, and the tip portion protrudes toward the trigger 210. When the push lever interference unit 321b moves from the top dead center to the bottom dead center when the trigger 210 is pulled in the first operation mode, as shown in FIG. Interfering with the portion 211b is prevented from moving to the bottom dead center. Further, when the push lever interfering section 321b moves from the bottom dead center to the top dead center in the first operation mode with the trigger 210 being pulled, as shown in FIG. Interfering with the trigger interference unit 211b prevents movement to the top dead center. Further, in the second operation mode, the push lever interference unit 321b does not interfere with the trigger interference unit 211b of the trigger 210 between the top dead center and the bottom dead center regardless of whether or not the trigger 210 is pulled. It is movable.

  Next, the operation | movement at the time of the operation | work of the nailing machine 1 comprised as mentioned above is demonstrated.

  First, the operation when the first operation is performed in the nailing machine 1 according to the present embodiment will be described. In this case, the operator operates the switching knob 213 to set the nail driver 1 in the first operation mode. In the first operation mode, the nailing machine 1 is in a state as shown in FIG. 2 in a state where the pushing operation of the push lever 320 and the pulling operation of the trigger 210 are not performed. From this state, when the operator presses the lower end of the push lever 320 against the workpiece 3, the push lever 320 moves to the top dead center. At this time, as shown in FIG. 6, the push lever plunger 260 moved upward together with the push lever 320 moves the valve member 252 of the push lever valve 250 upward against the spring 253. Then, the push lever valve 250 is opened, and the air passage 270 and the air passage 280 communicate with each other.

  Next, the operator pulls the trigger 210 against the spring 212. Then, the trigger 210 rotates counterclockwise around the rotation center portion 211a from the state shown in FIG. 6, and enters the state shown in FIG. When the trigger 210 rotates, the trigger interference unit 211b moves without interfering with the push lever interference unit 321b, and can be positioned inside the passing region of the push lever interference unit 321b as shown in FIG. . At this time, the trigger 210 contacts the lower end of the trigger plunger 230 and moves the valve member 221 of the trigger valve 220 upward against the pressure of the compressed air via the trigger plunger 230. Then, the trigger valve 220 is opened, and the pressure accumulation chamber 400 and the air passage 270 communicate with each other.

  As a result, the pressure accumulation chamber 400 and the main valve chamber 161 communicate with each other, and the compressed air in the pressure accumulation chamber 400 flows into the main valve chamber 161. The compressed air that has flowed into the main valve chamber 161 moves the cylinder 110 downward against the urging force of the spring 162. When the cylinder 110 moves downward, the compressed air in the pressure accumulating chamber 400 flows into the piston upper chamber from a gap formed at the upper end of the cylinder 110. Further, the exhaust valve 164 blocks the air passage 163 that communicates the piston upper chamber with the outside by the compressed air flowing into the air passage 280. Accordingly, the piston 120 and the driver blade 130 are rapidly lowered by the pressure of the compressed air flowing into the piston upper chamber, and the nail 2 struck by the tip of the driver blade 130 is driven into the driven material 3. The air in the piston lower chamber flows into the return air chamber 140 through the air passage 113. Further, after the piston 120 moves below the air passage 112, the compressed air returns from the check valve 111 and flows into the air chamber 140. The piston 120 collides with the piston bumper 150 at the bottom dead center, and the piston bumper 150 deformed by the impact absorbs surplus energy of the piston 120 after the nail 2 is driven.

  After the driving operation, when the operator releases the trigger 210 while pressing the push lever 320 against the driven material 3, the operator moves downward by the urging force of the spring 220 and returns to the state shown in FIG. As a result, the trigger plunger 230 moves downward due to the pressure of the compressed air, and the compressed air is exhausted to the outside through a gap between the trigger plunger 230 and its peripheral wall. Then, the valve member 231 of the trigger valve 230 moves downward to close the trigger valve 230, and the exhaust valve 164 is opened to exhaust the compressed air in the piston upper chamber. Then, the compressed air in the return air chamber 140 flows into the piston lower chamber and the piston 120 rises. Thereafter, when the push lever 320 is separated from the driven material 3, the push lever 320 is moved to the bottom dead center by the urging force of the push lever spring 322, and the nail driver 1 is brought into the state before driving shown in FIG. Return.

  When the operator pulls the trigger 210 and moves the push lever 320 away from the driven material 3 after the driving operation, the push lever 320 is moved downward from the top dead center by the urging force of the push lever spring 322. Moving. However, as shown in FIG. 8, the push lever interference part 321b interferes with the trigger interference part 211b and is prevented from moving to the bottom dead center. Thereafter, when the trigger 210 is released, the trigger 210 returns to the initial position due to the biasing force of the spring 220, and the trigger interference unit 211b also returns to the initial position outside the passage region. Therefore, the push lever interference portion 321b is not interfered by the trigger interference portion 211b, and returns to the bottom dead center by the urging force of the push lever spring 322.

  Further, from the state shown in FIG. 2, when the operator performs a pulling operation of the trigger 210 before pressing the push lever 320 against the workpiece 3, the trigger interference unit 211 b is connected to the push lever interference unit 321 b. Located inside the passing area. Therefore, when the push lever 320 is pressed against the workpiece 3 after the trigger 210 is pulled, the push lever interference portion 321b interferes with the trigger interference portion 211b as shown in FIG. Cannot move to top dead center. Therefore, the push lever plunger 260 cannot push up the valve member 252 of the push lever valve 250, the push lever valve 250 remains closed, and no driving operation is performed.

  As described above, in the first operation mode, the nail 2 is driven only when the trigger 210 is pulled after the push lever 320 is pressed, and after the trigger 210 is released, the trigger 210 is pulled again. By performing the operation, the next nail 2 can be driven.

  Next, the operation in the case where the second operation is performed in the nail driver 1 according to the present embodiment will be described. In this case, the operator rotates the switching knob 213 to set the nail driver 1 in the second operation mode. In the second operation mode, the nail driver 1 is in a state as shown in FIG. 10 in a state where the pushing operation of the push lever 320 and the pulling operation of the trigger 210 are not performed. When the operator pulls the trigger 210 from this state, the trigger plunger 240 moves upward, and as shown in FIG. 11, the valve member 231 of the trigger valve 230 moves upward against the pressure of compressed air. Let Then, the trigger valve 230 is opened, and the pressure accumulation chamber 400 and the air passage 270 communicate with each other. In this state, the trigger interference unit 211b is located outside the pass region of the push lever interference unit 321b.

  Next, the operator presses the push lever 320 against the workpiece 3. Then, since the trigger interference part 211b is located outside the passage region of the push lever interference part 321b, the push lever interference part 321b moves from the bottom dead center to the top dead center without being interfered by the trigger interference part 211b. Then, the state shown in FIG. 12 is obtained. At this time, the push lever plunger 260 moved upward together with the push lever 320 pushes up the valve member 252 of the push lever valve 250 against the urging force of the spring 253. Then, the push lever valve 250 is opened, and the air passage 270 and the air passage 280 communicate with each other.

  As a result, the pressure accumulation chamber 400 and the main valve chamber 161 communicate with each other, and the compressed air in the pressure accumulation chamber 400 flows into the main valve chamber 161. Then, the nail driver 1 performs the operation of driving the nail 2 into the workpiece 3 in the same manner as in the first operation mode described above.

  After the driving operation, when the operator pulls the trigger 210 and moves the push lever 320 away from the workpiece 3, the push lever interference portion 321 b is not interfered with the trigger interference portion 211 b, so that the push lever spring 322 is attached. Return to bottom dead center by force. Then, the push lever plunger 260 moves downward together with the push lever 320. Therefore, the valve member 252 moves downward by the urging force of the spring 253 of the push lever valve 250, and the push lever valve 250 is closed as shown in FIG. In this state, when the push lever 320 is again pressed against the workpiece 3, as shown in FIG. 12, the push lever plunger 260 moved upward together with the push lever 320 causes the spring 253 of the push lever valve 250 and the compressed air. Moves the valve member 252 upward against the force of pressing the valve member 252 downward. As a result, the push lever valve 250 is opened, the air passage 270 and the air passage 280 communicate with each other, and a driving operation is performed.

  As described above, in the second operation mode, a plurality of nails 2 can be driven continuously by performing the pushing operation of the push lever 320 a plurality of times while the trigger 210 is being pulled. .

  As mentioned above, the nail driver 1 which concerns on embodiment of this invention switches the position of the trigger interference part 211b in the state in which the pulling operation of the trigger 210 is performed to the outer side or the inner side of the passage area of the push lever interference part 321b. Thus, the first operation and the second operation can be switched. Therefore, the nail driver 1 can switch the driving operation without having a complicated structure inside the trigger 210.

Further, the nailing machine 1 of this embodiment has a first rotation shaft 212a switching knob 213 rotatably mounted to the body 100 with the trigger 210, the central axis O ₂ of the rotation of the switching knob 213, apart center axis O ₁ and the predetermined distance of the first rotary shaft portion 212a and positioned. Therefore, the operator can easily switch the position of the first rotating shaft portion 212a between the position in the first operation mode and the position in the second operation mode by rotating the switching knob 213.

1 Nailer 100 Main body 110 Cylinder 111 Check valve 112 Air passage 113 Air passage 120 Piston 130 Driver blade 140 Return air chamber 150 Piston bumper 161 Main valve chamber 162 Spring 163 Air passage 164 Exhaust valve 200 Handle portion 210 Trigger 211 Trigger main body Part 211a rotation center part 211b trigger interference part 211c operation part 211d contact part 212 rotation shaft part 212a first rotation shaft part 212b second rotation shaft part 213 switching knob 220 spring 230 trigger valve 231 locking part 232 valve member 233 trigger valve Chamber 234 Opening portion 240 Trigger plunger 250 Push lever valve 251 Bush 251a Passage 251b Opening portion 251c Locking portion 252 Valve member 253 Spring 260 Push lever Ranger 261 Spring 270 Air passage 280 Air passage 300 Nose portion 310 Injection portion 311 Injection passage 320 Push lever 321 Push lever main body portion 321a Abutting portion 321b Push lever interference portion 322 Push lever spring 400 Pressure accumulating chamber 500 Magazine 2 Nail 3 Material

Claims (2)

A push lever that can move between top dead center and bottom dead center;
A push lever interference portion provided on the push lever and movable together with the push lever;
A trigger provided on the main body so as to be rotatable around a rotation shaft portion;
A trigger interference unit provided on the trigger and movable with the trigger;
A switching unit that switches the position of the rotating shaft portion between a first position and a second position;
With
In the first position, the trigger interference unit moves the push lever when the push lever moves between the bottom dead center and the top dead center in a state where the trigger pulling operation is not performed. Located outside the passing area through which the interference part passes, and in a state where the trigger pulling operation is performed, located inside the passing area,
In the second position, the trigger interference unit is located outside the passing region regardless of the state of the trigger pulling operation,
When the position of the rotary shaft portion is switched to the first position by the switching unit, it can be driven only when a trigger pulling operation is performed after the push lever pressing operation, and the position of the rotary shaft portion is When switched to the second position, it can be driven regardless of the order of the pushing operation of the push lever and the pulling operation of the trigger,
A driving machine characterized by that. The switching unit has a knob that is rotatably provided to the main body together with the rotating shaft unit,
A central axis of rotation of the knob is located a predetermined distance away from the rotary shaft portion;
The driving machine according to claim 1.

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