JP2010194644A - Driving tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a driving tool for driving two nails simultaneously which is simpler and lower in cost than a conventional one by solving a problem that the conventional driving tool for driving two nails simultaneously is configured to include two pair of cylinders, pistons, and nail feeding mechanisms, so that a configuration becomes complicated to cause cost increase. <P>SOLUTION: In the driving tool, the single piston has the single cylinder, and two striking drivers are arranged at the piston. Accordingly, two striking passages are arranged in parallel and driving implements supplied to each passage are supplied one by one with one pitch at a time. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a driving tool such as a compressed air driven nailing machine.

In general, a hand-held driving tool used in a construction site of a house has a structure in which a single driver for driving a driving tool is attached to a piston that reciprocates using compressed air as a driving source. Only one driving tool is driven by the driving operation.
On the other hand, depending on the object to be driven, it may be possible to speed up the operation by driving a plurality of driving tools at a time. For example, when a large number of driving tools are driven at regular intervals, the working time can be greatly reduced if a plurality of driving tools can be driven by a single driving operation.
Conventionally, a driving tool (two simultaneous driving tools) for simultaneously driving two driving tools in a single driving operation is disclosed in the following patent document. In this conventional driving tool, two cylinders are arranged in parallel in a single housing, each piston is accommodated in each cylinder, and two sets are arranged at the lower part of the housing corresponding to the impact driver attached to each piston. It was provided with a configuration in which the driving passages were arranged in parallel. Moreover, it was the structure which arranged the driving tool feeder in parallel corresponding to each of two sets of driving paths. According to such a conventional driving tool, two driving tools can be simultaneously driven at a smaller interval than when two normal single driving tools are arranged in parallel.

No. 7-51282

However, according to the conventional two-piece simultaneous driving tool, although the housing is single, two cylinders are arranged in parallel inside, the pistons are housed in each, and one impact driver is provided for each of the pistons. In addition, the driving path and the magazine for supplying driving tools to the driving path are each provided with two sets, and it is necessary to make improvements from the viewpoint of simplification of the configuration and cost reduction.
Therefore, an object of the present invention is to provide a two-piece driving tool that is more advantageous than the conventional one in terms of configuration and cost.

For this reason, this invention was set as the driving tool of the structure described in each claim of a claim.
According to the driving tool of the first aspect, since a single piston is provided in a single cylinder, the structure can be simplified and the cost can be reduced as compared with the conventional configuration in which a piston is provided in each of a plurality of cylinders. You can plan.
According to the driving tool of claim 2, for example, by appropriately setting the feed pitch of the connecting driving tool formed by connecting a large number of driving tools in a parallel state at regular intervals, a plurality of driving tools can be used by the single connecting driving tool. The driving tool can be supplied to the driving passage portion at once. Since the plurality of hitting drivers are arranged in parallel along the driving tool feeding direction, a plurality of driving tools arranged in parallel in the feeding direction can be hit and ejected at a time. Thus, it becomes easy to unify the driving tool supply device by adopting a configuration in which a plurality of hitting drivers are arranged in parallel along the driving tool supply direction, thereby further simplifying the configuration and reducing the cost. It becomes possible.
According to the driving tool of the third aspect, since the driving tool supply device can be united in addition to the unitization of the piston, the configuration can be further simplified and the cost can be further reduced.
According to the driving tool according to claim 4, it is possible to drive a plurality of driving tools at a fixed interval at a time while simplifying the configuration and reducing the cost by providing a plurality of drivers for driving the driving tool. It becomes like this.

It is a longitudinal cross-sectional view of the driving tool which concerns on this embodiment. In this figure, a part of the handle part and a part of the magazine are omitted. In this figure, the driving tool is driven downward. FIG. 2 is a transverse cross-sectional view of a driving portion, and is a cross-sectional view taken along line (II)-(II) in FIG. 1. This figure shows an initial state in which a driving tool is supplied into the first and second driving passages. It is a cross-sectional view of a driving part. This figure shows a stage in the middle of the downward movement of the impact driver in the first and second driving paths. Since this stage is before the piston passes through the air port 22b, the feed pawl has not started to move backward. It is a cross-sectional view of a driving part. This figure shows the stage where the piston reaches the bottom dead center and the driving is completed. At this stage, since the piston has passed through the air port 22b, the feed pawl starts to move backward. It is a cross-sectional view of a driving part. This figure shows the stage in which the piston reaches the bottom dead center and the feed claw is in the middle of retreating, and the first engagement claw part climbs over the third nail backward. It is a cross-sectional view of a driving part. This figure shows a stage where the piston reaches the bottom dead center and the feed claw is in the middle of retreating, and the first engaging claw part rides over the fourth nail backward. It is a cross-sectional view of a driving part. This figure shows the stage where the piston reaches the bottom dead center and the feed claw has moved to the retracted end. It is a cross-sectional view of a driving part. This figure shows an initial state in which the piston is returned to the top dead center, and a state in which the third nail and the fourth nail are newly supplied into the first and second driving passages.

Next, an embodiment of the present invention will be described with reference to FIGS. In the present embodiment, as the driving tool 1, a compressed air driven nail driver is illustrated. This driving tool 1 is a two simultaneous driving tool capable of driving two driving tools n and n at a time. As shown in FIG. 1, the driving tool 1 includes a main body unit 20, a driving unit 30, a handle unit 40, and a driving tool supply device 50.
The main body 20 includes a single cylindrical cylinder 22 inside a main body case 21. Inside the cylinder 22, one piston 23 is housed so as to be able to reciprocate up and down. A head valve 24 is disposed on the cylinder 22. The head valve 24 has a function of supplying and exhausting compressed air to and from the cylinder upper chamber 22 a defined by the piston 23. The head valve 24 is opened and closed up and down by an on / off operation of a trigger valve 41 provided at the base of the handle portion 40. The trigger valve 41 is turned on by pulling the switch lever 42 by the user.
A pressure accumulating chamber 40 a is provided inside the handle portion 40. In this pressure accumulation chamber 40a, compressed air supplied from an air source (not shown) is accumulated. The compressed air in the pressure accumulating chamber 40a is constantly acting on the lower peripheral edge of the head valve 24. The head valve 24 is biased to the closed side (lower side in the figure) by compression springs 25 to 25 interposed between the upper surface of the head valve 24 and the upper part of the main body case 21.

When the trigger valve 41 is off, the compressed air in the pressure accumulating chamber 40a also acts on the upper surface side (upper chamber) of the head valve 24. In this state, the head valve 24 is in a state where the cylinder upper chamber 22a is closed with respect to the pressure accumulation chamber 40a by the urging force of the compression springs 25 to 25. When the cylinder upper chamber 22a is closed by the head valve 24, the cylinder upper chamber 22a is exhausted (released to the atmosphere). The piston 23 is returned to the top dead center by exhausting the cylinder upper chamber 22a.
A top dead center damper 28 for shock absorption is attached to the upper part of the main body case 21. When the piston 23 comes into contact with the top dead center damper 28, the impact at the top dead center of the piston 23 is absorbed.
On the other hand, a bottom dead center damper 29 for absorbing shock is similarly attached to the lower part of the main body case 21. When the piston 23 comes into contact with the bottom dead center damper 29, an impact at the bottom dead center of the piston 23 is absorbed.
As shown in the drawing, when the switch lever 42 is pulled upward in the drawing, the trigger valve 41 is turned on. When the trigger valve 41 is turned on, the upper chamber side of the head valve 24 is opened to the atmosphere. When the upper chamber side of the head valve 24 is opened to the atmosphere, the head valve 24 is moved up by the compressed air in the pressure accumulating chamber 40a acting on the peripheral surface of the lower surface thereof. When the head valve 24 moves up, the cylinder upper chamber 22a is opened with respect to the pressure accumulation chamber 40a. When the cylinder upper chamber 22a is opened, the compressed air in the pressure accumulating chamber 40a flows into the cylinder upper chamber 22a, and the piston 23 moves downward by the thrust.
When the piston 23 comes into contact with the bottom dead center damper 29 and reaches the bottom dead center, the compressed air in the cylinder upper chamber 22a is accumulated in the return air chamber 21a via the air ports 22b to 22b with check valves.

Two striking drivers 26 and 27 are attached to the piston 23. The two striking drivers 26 and 27 each strike the head of one driving tool n and have the same length and thickness (diameter). The two striking drivers 26 and 27 extend in parallel with each other downward from the lower surface of the piston 23. The two striking drivers 26 and 27 are screwed to positions displaced toward the outer peripheral side by the same distance from each other with respect to the center of the lower surface of the piston 23. Hereinafter, in FIG. 1, the left impact driver 26 is referred to as a first driver 26, and the right impact driver 27 is referred to as a second driver, and is appropriately distinguished. The leading end sides of both striking drivers 26 and 27 reach the driving portion 30 via the inner peripheral side of the bottom dead center damper 29, respectively. The driving unit 30 is provided so as to extend downward from the lower portion of the main body unit 20 (in the driving direction of the driving tool n).
The driving unit 30 is provided with two driving passages 31 and 32 corresponding to the two driving drivers 26 and 27. The two driving passages 31 and 32 are arranged in parallel along the driving tool feeding direction (left direction in FIG. 1). Accordingly, the two striking drivers 26 and 27 are also arranged in parallel along the driving tool feeding direction. Hereinafter, the driving path 31 through which the first driver 26 is inserted is referred to as a first driving path 31, and the driving path 32 through which the second driver 27 is inserted is referred to as a second driving path 32 and is appropriately distinguished. Both the striking drivers 26 and 27 move up and down integrally with the piston 23, and move up and down (advance and retreat) in the driving passages 31 and 32 corresponding thereto. The driving tool n is hit while the driving drivers 26 and 27 move down in the driving paths 31 and 32, respectively. One driving tool n is supplied to the driving paths 31 and 32 by the driving tool supply device 50 at a time.
The driving tool supply device 50 is configured by winding a connecting driving tool N formed by connecting a number of driving tools n to n in parallel with each other at a predetermined interval via two connecting wires j and j. A magazine 51 to be accommodated, and a feed unit 52 for feeding the connecting driving tool N fed out from the magazine 51 to the driving unit 30 side at a constant pitch are provided. In FIG. 1, only the end portion of the magazine 51 on the feeding side is shown. A feeding portion 52 is connected to the feeding side end of the magazine 51 in a continuous state.

A feed portion 52 is coupled to the side of the driving portion 30. The feed section 52 operates so as to supply the two driving tools n and n into the driving paths 31 and 32 in conjunction with one driving operation in the main body section 20. The first driving path 31 and the second driving path 32 are connected to each other via a path coupling portion 33. The passage coupling portion 33 is formed with a space sufficient to allow one driving tool n to pass from the second driving passage 32 into the first driving passage 31. One driving tool n passes through the second driving path 32 and is supplied into the first driving path 31 through the path coupling portion 33.
The operation state of the feeding portion 52 relative to the driving portion 30 is shown in FIG. 2 shows a state in which one driving tool n is supplied into each of the first and second driving passages 31 and 32, and corresponds to the initial state (standby state) of the main body 20 shown in FIG. Is shown.
The feed portion 52 includes a base portion 53 provided integrally with the drive portion 30, a drive tool feed claw 54 supported by the base portion 53 so as to be capable of moving back and forth in the drive tool feed direction and tilting up and down, and a base portion 53. The lid portion 55 is supported so as to be openable and closable. Between the base portion 53 and the lid portion 55, a feed passage 60 for guiding the connection driving tool N is formed.
The base portion 53 is integrally provided so as to protrude from the side portion of the driving portion 30 to the side. The extending side end of the magazine 51 is coupled to the protruding end side of the base portion 53. The connection driving tool N is fed along the base portion 53 and sent toward the driving portion 30. The connected driving tool N is sent to the driving part 30 side by the driving tool feeding claw 54.
The driving tool feeding claw 54 is attached to the tip of the rod 56 a of the actuator 56. The actuator 56 is attached to the lower surface of the base portion 53 in the figure. The actuator 56 operates using compressed air accumulated in the return air chamber 21a of the main body 20 as a drive source. The actuator 56 operates in a direction in which the rod 56a is retracted when the compressed air accumulated in the return air chamber 21a is supplied through the port 21b and the vent pipe 2, and the compressed air in the return air chamber 21a is decompressed. Then, it act | operates in the direction which protrudes the rod 56a with the internal compression spring. By projecting the rod 56a, the connecting driving tool N is sent out by one pitch toward the driving passages 31 and 32 by the feeding claws 54. The actuator 56 operates with a large stroke (one pitch) corresponding to the feed pitch of two driving tools.

The driving tool feeding claw 54 is supported at the tip of the rod 56a of the actuator 56 in a state of being rotatable up and down in the drawing via a support shaft 56b. The driving tool feeding claw 54 is urged in a direction rotating in the clockwise direction in the figure (a direction in which the tip portion is displaced upward) by a compression spring 57 interposed between the driving tool claw 54 and the rod 56a.
The front end portion of the driving tool feed claw 54 is provided with a first engagement claw portion 54b on the front side in the feed direction and a second engagement claw portion 54c on the rear side in the feed direction. As shown in the figure, a gap having a width corresponding to the thickness of one shaft portion nj of the driving tool n is provided between the front first engagement claw portion 54b and the rear second engagement claw portion 54c. (Concavity 54d) is provided.
The base portion 53 is provided with a window portion 53b. When the driving tool feed claw 54 tilts up and down around the support shaft 56b, the claw portions 54b and 54c of the driving tool feed claw 54 enter the feed passage 60 through the window 53b, and conversely. evacuate.
As shown in FIG. 1, four rows of first engaging claws 54b on the front side in the feeding direction are provided at appropriate intervals in the driving direction (vertical direction in FIG. 1). Further, the second engaging claw portions 54c on the rear side in the feeding direction are also provided in three rows at appropriate intervals in the driving direction. As a result, as shown in the drawing, the driving tool n having a long shaft portion nj can be fed in parallel without being tilted. In the case of a driving tool that is shorter than that shown in the figure, the upper three rows of engaging claws 54b to 54b, 54c, 54c are used. Each driving tool n is displaced in the feed direction while displacing its head nh (upper end) along a guide groove 53 a provided in the base portion 53.
The first engaging claws 54b to 54b on the front side in the feed direction are formed to be long in the feed direction with a length that enters between the two driving tools n and n adjacent to each other in the front and rear directions in the feed direction. Due to the movement of the driving tool feeding claw 54 to the front side in the feeding direction (leftward in each figure), the two driving tools n and n adjacent to the front and rear in the feeding direction are respectively connected to the first and second engaging claws 54b and 54c. Is pushed from the rear side, the connection driving tool N is sent to the driving unit 30 side by an interval (one pitch) corresponding to two driving tools.

The lid portion 55 is supported via a support shaft 58 so as to be rotatable with respect to the driving portion 30. The lid 55 is provided with a check claw 61 for restricting the backflow of the connecting driving tool N. The check claw 61 is supported by the lid portion 55 through a support shaft 62 so as to be tiltable up and down. The check pawl 61 is urged in a direction (a counterclockwise direction in FIG. 2) in which a tip portion thereof enters the feed passage 60 by a compression spring 63 interposed between the check pawl 61 and the lid portion 55.
A restricting portion 61 a is provided at the tip of the check claw 61. The front surface of the restricting portion 61a is provided in a direction orthogonal to the driving tool feeding direction. The rear surface of the restricting portion 61a is provided in a direction inclined with respect to the driving tool feeding direction. For this reason, in a state where the lid portion 55 is closed with respect to the feed passage 60, the restricting portion 61a of the check claw 61 enters the feed passage 60, whereby the front surface of the restricting portion 61a is behind the driving tool n. And the displacement of the connecting driving tool N in the counter feed direction is restricted. Conversely, for the movement of the connecting driving tool N in the feeding direction, the check pawl 61 is tilted (retracted) upward against the urging force of the compression spring 63 by the tilting action of the rear surface of the restricting portion 61a. However, displacement of the connecting driving tool N in the feeding direction is allowed.
The feed passage 60 can be opened by rotating the lid 55 upward about the support shaft 58. By opening the feed passage 60, the connection driving tool N can be displaced in the counter-feeding direction, so that the connection driving tool N can be removed from the feed part 52.

At the leading end of the driving portion 30, injection ports 31a and 32a that are the leading ends of the first and second driving passages 31 and 32 are provided. A distal end portion of a contact lever 34 is disposed around the first injection port 31 a of the first driving passage 31. The contact lever 34 functions as a switch for starting a driving operation in the main body 20, and is supported so as to be vertically displaceable along the driving unit 30. An upper end portion 34 a of the contact lever 34 reaches the vicinity of the support shaft 42 a of the switch lever 42. An idler 43 is provided on the back side (upper surface side) of the switch lever 42 so as to be able to tilt up and down about the support shaft 43a. An upper end portion 34 a of the contact lever 34 is abutted from below with respect to the tilting tip side of the idler 43.
When the contact lever 34 is relatively moved upward by the pressing operation of the injection ports 31a and 32a to the driving material (not shown) in accordance with the pressing operation of the driving tool 1, the upper end 34a is integrally moved upward. Displace to As shown in FIG. 1, when the upper end 34a of the contact lever 34 is displaced upward with the switch lever 42 being pulled, the idler 43 is pushed upward and the stem 41a of the trigger valve 41 has a sufficient stroke upward. Therefore, the trigger valve 41 is turned on and the main body 20 is activated (the driving operation is started).
Even if the switch lever 42 is pulled, the upper end 34a does not move up in the state where the contact lever 34 is not moved up, so that the idler 43 is not pushed upward. As a result, the stroke of the stem 41a is insufficient. The valve 41 is not turned on. Since the trigger valve 41 is not turned on, the driving operation in the main body 20 is not performed even when the switch lever 42 is pulled.

According to the driving tool 1 of the present embodiment configured as described above, in the initial state in which the piston 23 is returned to the top dead center in the main body 20, the first and second driving passages 31, One driving tool n, n is supplied to each 32. Hereinafter, the driving tool n supplied into the first driving passage 31 will be referred to as the first nail n1, and the driving tool n supplied into the second driving passage 32 will be referred to as the second nail n2, and hereinafter the supply direction rear side. In order, the nail n3, the nail n4, n4,... Are distinguished from each other as necessary.
In the driving standby state in which the first nail n1 and the second nail n2 are supplied, the feed claw 54 is positioned at the forward end, and the first engagement claw 54b is located behind the second nail n2 in the second driving passage 32. Is in a state of entering between the third nail n3. Further, the third nail n3 is in a state of entering the recess 54d between the first engagement claw 54b and the second engagement claw 54c. Further, the tip of the check claw 61 is positioned behind the third nail n3, and the displacement of the connecting driving tool N in the counter feed direction is restricted.
When the switch lever 42 is pulled and the contact lever 34 is moved upward, compressed air is supplied to the cylinder upper chamber 22a in the main body 20 and the piston 23 is moved downward to start the driving operation. When the piston 23 moves downward, the first and second drivers 26 and 27 move downward in the driving passages 31 and 32, respectively. As shown in FIG. 3, the first driver 26 moves down in the first driving passage 31 to hit the first nail n <b> 1, and the second driver 27 moves down in the second driving passage 32 to set the second driving force. The nail n2 is hit. The first nail n1 and the second nail n2 hit simultaneously by the first and second drivers 26 and 27 are simultaneously driven out from the injection ports 31a and 32a and driven into the driving material.
When the piston 23 reaches the bottom dead center and the driving of the two driving tools n1 and n2 is completed, the compressed air in the cylinder upper chamber 22a is accumulated in the return air chamber 21a via the air ports 22b to 22b. Compressed air accumulated in the return air chamber 21a is supplied to the actuator 56 through the port 21b and the vent pipe 2.

When compressed air is supplied to the actuator 56 (when the piston 23 reaches the bottom dead center), the actuator 56 operates to the retract side, so that the feed pawl 54 starts to move backward as shown in FIG. At this time, since the reverse movement of the connection driving tool N is restricted by the check claw 61, the feed claw 54 is displaced rearward in the supply direction with respect to the connection driving tool N. Further, the rear portions of the engaging claws 54b and 54c of the feeding claw 54 are formed on an inclined surface so as not to engage with each driving tool n, so that the feeding claw 54 is both engaged as shown in the figure. The claw portions 54b, 54c begin to retreat smoothly while tilting in the direction in which the claw portions 54b, 54c are retracted from the feed passage 60 (counterclockwise direction about the support shaft 56b).
As shown in FIGS. 5 and 6, the operation of the actuator 56 on the retracting side causes the feed claw 54 to move backward with respect to the connecting driving tool N by a distance corresponding to two driving tools. FIG. 5 shows a stage where the first engaging claw 54b gets over the third nail n3, and FIG. 6 shows a stage where the first engaging claw 54b gets over the fourth nail n4. The first engagement claw portion 54b of the feed claw 54 gets over the two driving tools n and n (the third nail n3 and the fourth nail n4) backward by one stroke of the actuator 56 toward the drawing side.
As shown in FIG. 7, when the actuator 56 is actuated by the compressed air to the stroke end on the pull-in side, the feed claw 54 is returned by the compression spring 57 in a direction in which both the engaging claw portions 54 b and 54 c enter the feed passage 60. At this stage, the first engaging claw 54b enters between the fourth nail n4 and the fifth nail n5, and the second engaging claw 54c enters the rear side of the fifth nail n5.

Thus, the movement of the feed pawl 54 to the rear side of the third nail n3 and the fourth nail n4 is instantaneously performed by the pressure increase of the return air chamber 21a after the piston 23 reaches the bottom dead center.
Thereafter, when the pulling operation of the switch lever 42 is released or the upward movement operation of the contact lever 34 is released, the trigger valve 41 is turned off. When the trigger valve 41 is turned off, compressed air is supplied to the upper chamber side of the head valve 24, so that the head valve 24 is moved down and the cylinder upper chamber 22a is closed with respect to the pressure accumulation chamber 40a. When the cylinder upper chamber 22a is closed by the head valve 24, the supply of compressed air from the pressure accumulating chamber 40a is shut off and the cylinder upper chamber 22a is opened to the atmosphere. When the cylinder upper chamber 22a is opened to the atmosphere, the piston 23 is moved upward by the compressed air of the return air chamber 21a acting on the lower surface side of the piston 23 via the return ports 22c to 22c of the cylinder 22.
While the piston 23 is returned to the top dead center by the compressed air in the return air chamber 21a, the compressed air in the return air chamber 21a is consumed and depressurized, and the atmosphere passes through the inner peripheral side of the damper 29 and the driving passages 31 and 32. By being opened, the supply of compressed air to the actuator 56 is finally stopped. When the supply of compressed air is stopped, the actuator 56 is actuated to the rod protruding side by an internal compression spring. When the actuator 56 is actuated to the rod protruding side, the feed claw 54 moves forward by one pitch toward the driving portion 30, and thereby the connecting driving tool N moves to the driving portion 30. When the feed claw 54 moves forward by one pitch corresponding to two driving tools, the third nail n3 moves into the first driving path 31 through the second driving path 32 and the path coupling portion 33, and the fourth nail n4. Moves into the second driving passage 32. FIG. 8 shows a state in which the third nail n3 is newly supplied to the first driving path 31 and the fourth nail n4 is newly supplied to the second driving path 32.
At the stage where the connecting driving tool N is pushed by the two engaging claws 54b and 54c of the feed claw 54 and moves toward the driving part 30, the restricting part 61a of the check claw 61 is applied to each driving tool n by its rear surface tilting action. They are not engaged. For this reason, the movement of the connecting driving tool N toward the driving unit 30 is smoothly performed by the spring force of the actuator 56.

As described above, according to the driving tool 1 according to the present embodiment, since the single piston 23 is provided in the single cylinder 22, the structure is compared with the conventional configuration in which the piston is provided in each of the plurality of cylinders. Simplification and cost reduction can be achieved.
Further, according to the driving tool 1 of the present embodiment, the two driving tools n and n can be driven simultaneously by the first and second drivers 26 and 27 provided in the single piston 23 and the driving operation is performed. The two driving tools n, n can be supplied to the driving unit 30 at a time in conjunction with. Since the two striking drivers 26 and 27 are arranged in parallel along the driving tool feeding direction, the two driving tools n and n can be supplied at a time by a single driving tool supply device 50. As a result, the function (two simultaneous supply) can be exhibited without complicating or increasing the cost of the driving tool supply device 50.
Various modifications can be made to the embodiment described above. For example, although the structure provided with the two impact drivers in the single piston was illustrated, it is good also as a structure provided with the 3 or more impact drivers. In this case, three or more driving paths may be provided corresponding to three or more driving drivers, and a driving tool may be supplied one by one for each. Even in this case, by arranging three or more striking drivers in parallel along the driving tool supply direction, a plurality of driving tools can be arranged at one pitch of the actuator without complicating and increasing the cost of the driving tool supply device. It can be set as the structure supplied.
In addition, although a compressed air drive type nailing machine has been illustrated as the driving tool, it can be applied to a so-called tucker and, of course, can be applied to a driving tool for a gas combustion machine.

1 ... Driving tool (Compressed air nailing machine)
2 ... Ventilation tube N ... Connection driving tool, j ... Coupling wire n ... Driving tool (n1 ... 1st nail, n2 ... 2nd nail, n3 ... 3rd nail, ...)
nj ... shaft, nh ... head 20 ... main body 21 ... main body case, 21a ... return air chamber 22 ... cylinder, 22a ... cylinder upper chamber, 22b ... air port 23 ... piston 24 ... head valve 25 ... compression spring 26 ... first DESCRIPTION OF SYMBOLS 1 driver 27 ... 2nd driver 28 ... Top dead center damper 29 ... Bottom dead center damper 30 ... Drive-in part 31 ... 1st drive-in path, 31a ... Injection port 32 ... 2nd drive-in path, 32a ... Injection port 33 ... Passage coupling part 34 ... contact lever 34a ... upper end 40 ... handle portion 40a ... accumulator 41 ... trigger valve 41a ... stem 42 ... switch lever 42a ... spindle 43 ... idler 43a ... spindle 50 ... driving tool supply device 51 ... Magazine 52 ... Feed part 53 ... Base part, 53b ... Window part 54 ... Feed claw 54b ... First engagement claw part, 54c ... Second engagement claw part, 54d ... Recess 55 ... lid 56 ... actuator, 56a ... rod, 56b ... shaft 57 ... compression spring 58 ... shaft 60 ... feed path 61 ... counter claw, 61a ... restricting portion 62 ... shaft 63 ... compression spring

Claims (4)

A driving tool provided with a plurality of driving drivers for driving a driving tool on a single piston built in a single cylinder. The driving tool according to claim 1, wherein the plurality of driving drivers are arranged in parallel along the driving tool supply direction. The driving tool according to claim 1 or 2, further comprising a single driving tool supply device for supplying a plurality of driving tools at a time into the passage section. A single piston that reciprocates in a single cylinder by a common drive source, a plurality of driving drivers for driving a plurality of driving tools attached to the piston, and a single driving passage through which the plurality of driving drivers are inserted And a driving tool supply device for supplying a plurality of driving tools to the driving passage section at a time corresponding to the plurality of driving drivers.

Images