JPH0947978A - No-load driving prevent device for fixing tool driving machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fixing tool driver to prevent the occurrence of no-load driving when there is no fixing tool coupling body in a magazine. SOLUTION: A no-load drive preventing device for a fixing tool driving machine has a magazine 10 coupled in such a manner to feed a head nail to the drive passage of a nose 6, and when a trigger device 15 arranged at a handle 5 is operated, a nail in the drive passage of the nose 6 is driven. A trigger device comprises a trigger lever 18 having a root part pivotally supported at the handle 5; a trip lever 21 having a tip 20 pivotally supported at an end part 19 and extending in the direction of a root part 17 of a trigger lever 18; and a trigger valve 23 arranged at the handle 5 and having a valve pin 22. A rod 25 extending from a trip lever to the tip 20 toward the side of the magazine 10 and attached axially slidably, and a hole 27 through which a rod tip advances in the magazine is formed in the side of the magazine. Only when a bail continuous substance is contained in the magazine, the trip lever 21 can take an effective operation position.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention connects a plurality of fasteners with a nose in which a driving member extends from a fastener driving machine body including a handle to form a driving passage for driving the fasteners. A magazine for supplying the leading fastener to the driving passage of the nose, the fastener being driven by the actuation of the trigger device. A fastener driving machine.

[0002]

2. Description of the Related Art A fastener driving machine main body including a handle, a nose connected to the main body, a driving member extending from the main body to form a driving passage for driving the fixing tool, and a fixing tool main body. Is formed so as to accommodate a fastener connecting body formed by connecting a plurality of fasteners and is connected to the nose so as to supply the leading fastener of the received fastener connecting body to the driving passage of the nose. And a magazine configured to drive the trigger device provided in the fastener body so that the fastener in the driving path of the nose is driven by the driving member into the object to be driven. BACKGROUND ART A driving machine is well known, for example, as a stapler or a nail driving machine, and is often used at a construction site of a house.

[0003]

In such a fastener driving machine, when the trigger device is operated even when there is no fastener coupling body in the magazine, the driving member is moved from the fastener driving machine body into the nose. I extended and had done a blank hitting motion. This idling operation not only wastes the fastener driving operation, but also shortens the life of the driving machine due to the impact of the idling operation, and the tip of the driving member protruding from the tip of the nose during the idling operation. It is not preferable because it may damage the decorative panel. However, the presence or absence of the fastener coupling body of the magazine,
Skilledness is required to make a judgment based on the subtle difference in the operation sound of the driving machine and the response of the driving operation.

Accordingly, it is an object of the present invention to provide a fastener driving machine capable of preventing idle driving when the magazine has no fastener coupling body. Further, an object of the present invention is to provide a fastener driving having a safety function of preventing a driving operation even when a trigger is accidentally operated when a magazine has a fastener coupling body, in addition to a blanking prevention function. To provide a machine. Further, an object of the present invention is to provide a fastener driving machine having a safety function in addition to the above-mentioned idle driving prevention function, in which the fastener cannot be driven in a state where the tip of the nose is not pressed against the driving target. It is in.

[0005]

To achieve the above object, according to the present invention, a fastener driving machine main body including a handle, and a driving member connected to the main body, from which the driving member extends and is fixed. A nose in which a driving passage for driving a tool is formed, and a fastener coupling body that is supported by the fastener driving machine main body and is formed to accommodate a plurality of fasteners connected to each other. It has a magazine connected to the nose so as to supply the fastener at the top of the body to the driving passage of the nose, and when the trigger device provided in the fastener driving machine main body is operated, the fastener is moved to the driving passage of the nose. A fastener driving machine configured such that a certain fastener is driven into a driving target by a driving member,
The trigger device includes a trigger lever whose root portion is pivotally supported by the fastener driving machine body, and a trip lever which is pivotally supported at a tip end of the trigger lever and whose tip extends toward the root portion of the trigger lever. And a trigger valve provided in the fastener driving machine main body and having a valve pin at a position where the intermediate portion of the trip lever comes into contact. A rod extending toward the shaft is mounted slidably in the axial direction, and a hole through which the rod tip abuts into the magazine is formed on the side surface of the magazine with which the rod abuts. When fixed, the fastener driving is characterized in that the trip lever is held in the effective operating position by restricting the movement of the rod by contacting the fastener coupling body. There is provided, thereby, when there is no fastener connecting body to the magazine, since the trip lever can not be held to enable the operating position, the trigger device does not act,
It is possible to prevent runaway.

Further, according to the present invention, in the fastener driving machine, the rod is disposed between the first rotation position and the second rotation position on the rod guide of the fastener driving machine body. It is supported so that it can rotate around the axis, and the trip lever side end of the rod comes into contact with the rod end when the trip lever moves to the rod side when in the first rotation position and effectively operates. The fastener driving tool is characterized in that a notch is formed so that the trip lever cannot be located in the effective operating position even if the trip lever is moved to the rod side when in the second rotation position. And the trip lever cannot be held in the effective operating position by locating the rod in the second rotational position, the trigger device does not work,
Even if the magazine has the fastener coupling body, it is possible to prevent the trigger operation from being inadvertently performed.

Further, according to the present invention, there is formed a fastener driving machine main body including a handle and a driving passage connected to the main body, from which a driving member extends to drive the fixing tool. A nose and a fastener driving machine body, which is formed so as to accommodate a fastener connecting body formed by connecting a plurality of fasteners,
A magazine connected to the nose so as to supply the leading fastener of the accommodated fastener coupling body to the driving passage of the nose, and when the trigger device provided in the fastener driving machine body is operated, the nose Is configured to be driven into the object to be driven by the driving member, and the trigger device includes a trigger lever having a root portion pivotally supported by the fastener driving machine body, and the trigger. A valve lever is provided at the position where the trip lever is pivotally supported by the tip of the lever and the tip extends in the direction of the root of the trigger lever, and the fastener driving machine body is in contact with the intermediate portion of the trip lever. And a safety valve extending from the tip of the nose toward the trip lever so that the trip lever is located at an effective operating position when the tip of the nose is pressed against the object to be driven. In the fastener driving machine configured so that the fastener cannot be driven unless the tip of the nose is pressed against the object, the fastener driving machine body is directed from the tip of the trip lever toward the magazine. A first rod extending so as to be slidable in the axial direction, and a second rod is attached to the end of the first rod on the magazine side.
The rod intermediate portion is pivotally connected, the trip arm side end portion of the safety arm extends to engage one end side of the second rod, and the magazine side surface is internally A hole is formed that can be entered and a pin that slides so as to be able to advance and retreat through the hole is provided. The pin extends so that the end that extends from the magazine engages with the other end side of the second rod, When the fastener assembly is housed in the magazine and the nose tip is pressed against the driven object,
A fastener driving machine is provided in which the movement of the first rod in the magazine direction is restricted by the contact of the pin with the fastener coupling body, and the trip lever can be located in the effective operating position. Even if the magazine does not have a fastener coupling body, even if the tip of the nose is not pressed against the driven object, the trip lever is not held in the effective operating position, so the trigger device does not work and Both a preventive function and a safety function of preventing the fastener from being driven in other than the object to be driven become possible.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. First, referring to FIGS. 1 to 3, a nailing machine 1 as a fastener driving machine according to a first embodiment of the present invention will be described. Incidentally, in the present invention, the fastener driving machine,
The fastener driving machine is not limited to the nail driving machine and may be a stapler or another fixing machine driving machine as long as it is a type having a magazine for accommodating a plurality of fixing machines connected to each other.

The main body 2 of the nail driving machine 1 has a cylinder and a piston, and a driving portion 3 for driving a rod-shaped driving member extending from the piston toward the nose, and an operator holds the nail driving machine 1. And a handle 5 for forming. A nose 6 is connected to the drive portion 3 of the nailing machine body 2 so as to extend, and a nose 6 is formed with a driving passage 7 through which a rod-shaped driving member extends to drive a nail as a fixing tool. Has been done. Also,
A magazine 10 formed to accommodate a plurality of nail connecting bodies 9 is connected to the nose 6 so as to supply the leading nail of the nail connecting body 9 to the driving passage 7 of the nose 6, and the rear end of the magazine. The part is supported on the end of the handle 5 of the body 2. In the magazine 10, a pusher 11 for pushing the nail connecting body 9 toward the driving passage 7 side of the nose 6 is arranged at the rear end side, and a spring 13 is provided in the pusher 11 to push the nail connecting body 9 into the nose 6. It is pushing to the side. A lever 14 for opening and closing the magazine is provided on the rear end side of the magazine 10. The lever 14 holds the loaded nail connecting body when the nail connecting body 9 is loaded into the magazine 10 or the nail connecting body is connected. Used when replenishing the body. Further, pressurized air for operating the nail driving machine 1 is supplied to the lower end side of the handle 5.

A trigger device 15 is attached to the handle 5 of the nailing machine 1.
By the operation of the trigger device 15, the piston / cylinder of the drive unit 3 operates, and the driving member connected to the piston drives the nail in the driving passage 7 of the nose 6 to drive a wooden panel or the like. Drive into the target object. The trigger device 15 is
A trigger lever 18 having a root portion pivotally supported by the handle 5 by a pin 17, and a trip lever having a root end 19 pivotally supported by the tip end side of the trigger lever 18 and a tip 20 extending in the direction of the pin 17 of the trigger lever 18. 21 and handle 5
And a trigger valve 23 having a valve pin 22 at a position where the intermediate portion of the trip lever 21 abuts. When the tip 20 of the trip lever 21 is in a state where movement is restricted at a position close to the trigger valve 23, that is, in an effective operating position, the trip lever 21 is rotated about the tip 20 by pulling the trigger lever 18. By moving, the intermediate portion of the trip lever 21 pushes the valve pin 22 and operates the trigger valve 23 to operate the piston / cylinder of the drive unit 3. On the other hand, when the movement of the tip 20 of the trip lever 21 is restricted at a position separated from the trigger valve, that is, when the trip lever 21 is not in the effective operating position, the intermediate portion of the trip lever 21 pushes the valve pin 22 by pulling the trigger lever 18. It is no longer possible to operate the trigger valve 23.

The drive lever 3 of the main body 2 includes a trip lever 2
A rod 25 extending toward the side surface of the magazine 10 from the vicinity of the tip 20 of the first slide member 1 is slidable in the axial direction thereof.
It is attached by a rod guide 26. In addition, in the portion of the magazine 10 with which the rod 25 abuts, the rod 2
A hole 27 is formed so that the front end of 5 can enter the magazine. Therefore, the tip of the rod 25 can contact the nail connecting body 9 when the nail connecting body 9 is accommodated in the magazine 10. The rod 25 has a weak coil spring 2 that is bent between the end on the trip lever 21 side and the rod guide 26 by the force required to push the valve pin 22 of the trigger valve 23.
9 is provided for urging the rod 25 toward the trip lever so that the magazine side end of the rod 25 does not come into contact with the nail connector 9 under normal conditions (that is, when the trigger lever is not operated). ing. A stopper 30 is provided on the magazine side portion of the rod 25 so as to prevent the rod 25 from moving too far to the trip lever 21 side by the spring 29.

The operation of the nailing machine 1 having the above structure will be described with reference to FIGS. As shown in FIGS. 1 and 2, when the nail connector 9 is loaded in the magazine 10 and the trigger lever 18 is operated to be pulled,
The pivotally-supported root-side end 19 of the trip lever 21 moves counterclockwise together with the trigger lever 18 as shown in FIG.
Contact the valve pin 22 of. After this contact, the trip lever 21 moves counterclockwise around the valve pin 22 as a fulcrum, and the tip 20 abuts against the end of the rod 25, so that the rod 25 resists the urging force of the spring 29 to the left side in FIG. Press to move to. The end of the rod 25 on the magazine side comes into contact with the nail connecting body 9 through the hole 27 of the magazine 10, and further movement is stopped, whereby the movement of the tip 20 of the trip lever 21 is stopped by the trigger valve 23. Being regulated at a position close to, the trip lever 21 takes the effective operating position described above. Since the trip lever 21 is located at the effective operating position, if the pulling operation of the trigger lever 18 is further continued, the end portion 19 on the base side of the trip lever 21 further moves in the counterclockwise direction, and the trip is accompanied by this movement. The intermediate portion of the lever 21 pushes the valve pin 22 to operate the trigger valve 23. By this operation, the piston / cylinder of the drive unit 3 is operated, the driving member extends into the driving passage of the nose 6, and the leading nail of the nail connecting body 9 is driven from the driving passage 7 to a panel or the like.

As shown in FIG. 3, a case in which the nail connector 9 is not loaded in the magazine 10 will be described. When the pulling operation of the trigger lever 18 is performed, the trip lever 21
The root-side end 19 of the trip lever 21 moves in the counterclockwise direction together with the trigger lever 18, and the intermediate portion of the trip lever 21 comes into contact with the valve pin 22 of the trigger valve 23 with this movement. Valve pin 2
It moves counterclockwise about 2 as a fulcrum, the tip 20 abuts on the end of the rod 25, and the rod 25 is moved to the magazine 10 side. Since there is no nail connector 9 in the magazine 10,
The rod 25 continues to move as it is without being restricted, and moves greatly to the magazine side. For this reason, the tip 20 of the trip lever 21 also moves to the magazine 10 side, and the trip lever 21 cannot take the effective operating position. Therefore, even if the pulling operation of the trigger lever 18 is further continued, the force for effectively pushing the valve pin 22 does not act on the intermediate portion of the trip lever 21, and the trigger valve 23 cannot be operated. Thus, when the magazine 10 is not loaded with the nail connecting body 9, the trigger device 15 can be prevented from operating even if the trigger lever 18 is pulled, and thus, blank driving can be prevented. .

4 to 6 show a nailing machine 31 as a fastener driving machine according to a second embodiment of the present invention. In the nail driving machine 31, even when the nail connecting body 9 is provided in the magazine 10 in addition to the blank driving prevention function of the nail driving machine 1 according to the first embodiment, the operation of the trigger device 15 is invalidated to cause a malfunction. Has a function to prevent. In the nailing machine 31, the same members as those of the nailing machine 1 of the first embodiment are designated by the same reference numerals, and the description of each of those members will be omitted. The rod 33 of the nailer 31 is
A guide support portion 35, which is supported by an outer rod guide 34 so as to be slidable in the axial direction, and further rotatably supports the rod guide 34 together with the rod 33, is provided further outside the rod guide 34. 35 is fixed to the drive unit 3 of the nailing machine main body 2. Therefore, rod 3
3 is attached to the rod guide 34 so as to be slidable in the axial direction, and is further supported by the guide support portion 35 so as to be rotatable around the axial center. In addition, the rod guide 34,
A knob portion 37 for rotating the rod guide 34 and the rod 33 is provided at one end of the rod 33, and the rod 33 is moved to the first rotation position shown in FIGS.
It can be rotated about the axis between the second rotation position of (B). Furthermore, the trip lever 21 of the rod 33
When the rod 33 is in the first rotation position (see FIGS. 4 and 6 (A)), the end portion 38 on the side of the trip lever 21
When the tip 20 of the rod moves to the rod side, the tip 20 moves to the rod 3
The trip lever 21 is brought into the effective operating position by abutting against the end portion 38 of the trip lever 3, but when the rod 33 is in the second rotation position (see FIGS. 5 and 6B), the tip 20 of the trip lever is A notch 39 is formed to prevent the trip lever 21 from moving to the rod side so that the trip lever 21 does not take an effective operating position.

In the nail driving machine 31 having the above structure, when the rod 33 is in the first rotation position shown in FIGS. 4 and 6 (A), it operates in the same manner as the nail driving machine 1. That is, when the nail connector 9 is housed in the magazine 10, the trip lever 21 can take an effective operating position, but when the magazine 10 does not have the nail connector 9, the trip lever 21 takes an effective operating position. Cannot be achieved, which prevents runaway.

The case where the rod guide 34 and the rod 33 are rotated to the second rotation position shown in FIGS. 5 and 6B by the knob portion 37 will be described. In this case, when the tip 20 of the trip lever 21 moves to the rod side, the tip 20 enters the notch 39 formed in the end 38 of the rod 33 and can further move to the magazine 10 side, so that the trip lever 21 is effectively operated. Can't take position.
Therefore, even when the magazine 10 has the nail connecting body 9, the valve pin 22 is not pushed even if the trigger lever 18 is pulled. As a result, it is possible to prevent erroneous operations such as erroneous shooting due to careless pulling operation of the trigger lever.

7 to 10 show a nailing machine 41 as a fastener driving machine according to a third embodiment of the present invention. In addition to the blank driving prevention function of the nail driving machine 1 according to the first embodiment, the nail driving machine 41 prevents driving of nails and staples unless the tip of the nose is pressed against the driving target. It has a safety function to do. Also in the nail driving machine 41, the same members as those in the nail driving machine 1 of the first embodiment are designated by the same reference numerals, and the description of these respective members will be omitted.
As shown in FIGS. 7 and 8, the nailing machine 41 is provided with a safety arm 42 extending from the tip of the nose 6 through the inside of the nose 6 toward the trip lever 21. , Nose 6 is slidably supported in parallel along the driving path 7 of the nose 6. The safety arm 42 positions the trip lever 21 at the effective operating position only when the tip portion of the nose 6 is pressed against a driving target such as a panel.
The fixing tool cannot be driven unless the tip of the nose is pressed against the object.

A first rod 43 extending from the tip 20 of the trip lever 21 toward the magazine 10 is attached to the drive unit 3 of the main body 2 of the nailing machine 41 slidably in the axial direction by a rod guide 45. ing. The end portion of the first rod 43 on the trip lever side extends so as to be adjacent to the tip 20 of the trip lever 21. First rod 43
The magazine-side end portion of the second rod 46 is provided with a pivot connection portion 47 at which the second rod 46 is pivotally supported (ie, pivotally supported) at an intermediate portion thereof. . By this pivotal support portion 47, the first rod 43
The second rod 46 pivotally supported at one end extends upward and the other end extends downward. An end 49 of the safety arm 42 on the side facing the trip lever 21 extends so as to engage with the upper end side of the second rod 46.

A hole 50 is formed in the side surface of the magazine 10 adjacent to the lower end of the second rod 46. This hole 50
A pin 51 that slides toward the lower end of the second rod 46 is disposed on the side surface of the magazine 10 in which the hole is formed so that the hole 50 can enter and exit. The pin 51 extends so that its end engages with the lower end side of the second rod 46. The pin 51 is provided with a coil spring 53 that urges the pin 51 toward the second rod 46, and the tip of the pin 51 is normally attached to the magazine 10 when the trigger lever 18 is not operated.
It is held in a non-contact state with the nail connecting body 9 housed in. Further, the first rod 43 is provided with a coil spring 54 between the pivotal support portion 47 and the rod guide 45, and urges the first rod 43 toward the magazine 10 to move the second rod 46.
The upper end side of the safety arm 42 is engaged with the end portion 49 of the safety arm 42 to urge the safety arm 42 so as to push it toward the tip of the nose 6. The coil spring 54 causes the second rod 46 to
The lower end of the pin is securely engaged with the end of the pin 51.

A case where the tip of the nose 6 is not pressed against the object to be driven in the operation of the nailing machine 41 having the above-mentioned structure will be described with reference to FIG. It is assumed that the magazine 10 accommodates the nail connecting body 9. Since the tip of the nose 6 is not pressed against the panel or the like, the first rod 43 is slid toward the magazine 10 as a whole by the urging force of the coil spring 54, and the second rod 4
The upper end side of 6 is the end 4 on the trip lever side of the safety arm 42.
It is moved to the side of the magazine 10 so as to come into contact with and press the sheet 9. Therefore, the safety arm 42, which is pressed by the end portion 49 on the trip lever side, moves toward the tip, and the tip thereof projects from the tip of the nose.

When the trigger lever 18 is pulled in this state, the end portion 19 of the trip lever 21 on the base side moves in the counterclockwise direction together with the trigger lever 18, and along with this movement, the intermediate portion of the trip lever 21. Approaches and contacts the valve pin 22 of the trigger valve 23. However, since the first rod 43 has moved to the magazine 10 side,
The tip 20 of the trip lever 21 also moves to the magazine 10 side, and the trip lever 21 is not located in the effective operating position. Therefore, the force that pushes the valve pin 22 deeply and effectively does not act on the intermediate portion of the trip lever 21, and the trigger valve 23 cannot be operated.
As described above, when the nose 6 is not pressed against the object to be driven, even if the trigger lever 18 is pulled while the magazine 10 has the nail connecting body 9, the operation of the trigger device 15 can be prevented, and the nose can be prevented. Unless the tip is pressed against the object to be driven, the driving is blocked and high safety is maintained.

In the above description, the magazine 10 accommodates the nail connector 9, but the operation of the trigger device 15 is blocked even when the nail connector 9 is not accommodated. If the nail connector 9 is not in the magazine 10,
Since the pin 51 is also pressed by the second rod 46 and moved into the magazine 10, the second rod 46 and the first rod 43
Moves further to the magazine 10 side. For this reason,
The tip 20 of the trip lever 21 is further attached to the magazine 10
This is because the trip lever 21 cannot push the valve pin 22 of the trigger valve 23 effectively as compared with the case where the nail connector 9 is housed in the magazine 10.

Next, the operation of the nailing machine 41 when the nail connector 9 is housed in the magazine 10 and the tip of the nose 6 is pressed against a panel or the like will be described with reference to FIG. Since the tip of the nose 6 is pressed against the panel or the like, the safety arm 42 also slides to the trip lever side,
The upper end side of the second rod 46 pressed by the trip lever side end portion 49 of the safety arm 42 is moved to the trip lever side. By this movement, the second rod 46 rotates around the pivotal connecting portion 47, and the lower end side of the second rod 46 is moved to the magazine 10 side, and the abutting pin 51 is biased by the coil spring 53. Pushing against, magazine 10
It is brought into contact with the nail connecting body 9. The movement of the upper end side of the second rod 46 to the trip lever side is further performed with the lower end side of the second rod 46 abutting on the pin 51 as a fulcrum.
To move to the side of the trip lever 21,
As a result, the first rod 43 is slid to the trip lever 21 side. As a result, the tip 20 of the trip lever 21 can come into contact with the tip of the first rod 43 at a position close to the trigger valve 23.

In this state, when the trigger lever 18 is operated to be pulled, the end portion 19 of the trip lever 21 on the base side is pulled.
Moves counterclockwise, and the intermediate portion of the trip lever 21 contacts the valve pin 22 of the trigger valve 23. After this contact, the trip lever 21 has a reaction force against the force that attempts to rotate the trip lever 21 more than the first rod 43 than the valve pin 22.
Is stronger, so that it rotates counterclockwise about the tip 20. The trip lever 21 has the tip 2 as described above.
When 0 is close to the trigger valve 23, the first rod 43
Since it is located at an effective operating position where it abuts against the tip of the trigger lever and rotates about this as a fulcrum, when the pulling operation of the trigger lever 18 is further continued, the intermediate portion of the trip lever 21 pushes the valve pin 22 to move the trigger valve 23. To operate. By this operation, the piston / cylinder of the drive unit 3 is operated, the driving member extends into the driving passage of the nose 6, and the leading nail of the nail connecting body 9 is driven from the driving passage to a panel or the like.

Further, with reference to FIG. 10, the operation of the nailing machine 41 when the tip of the nose 6 is pressed against the panel or the like but the nail connecting body 9 is not housed in the magazine 10 will be described. Since the tip of the nose 6 is pressed against the panel or the like, the safety arm 42 slides toward the trip lever side and is pressed against the trip lever side end portion 49 by the second rod 4.
The upper end side of 6 is moved to the trip lever side. By this movement, the second rod 46 rotates around the pivotal connecting portion 47, moves the lower end side of the second rod 46 to the magazine 10 side, and contacts the pin 51. Since the magazine 10 does not have the nail connecting body 9, this contact causes the pin 51 to enter the magazine 10. Therefore, the first rod 43 hardly moves and is maintained in the state of moving toward the tip of the nose.

In this state, when the pulling operation of the trigger lever 18 is performed, the end portion 19 of the trip lever 21 moves counterclockwise, and the middle portion of the trip lever 21 is moved to the trigger valve 2.
3 to the valve pin 22. The tip 20 of the trip lever 21 moves counterclockwise around the valve pin 22 as a fulcrum and comes into contact with the end of the first rod 43, but since the first rod 43 remains moving to the magazine 10 side,
The tip 20 of the trip lever 21 also moves to the magazine 10 side, and the trip lever 21 cannot be located in the effective operating position. Therefore, even if the pulling operation of the trigger lever 18 is continued, the force for effectively pushing the valve pin 22 does not act on the intermediate portion of the trip lever 21, and the trigger valve 23 cannot be operated. In this way, when the magazine 10 does not have the nail connecting body 9, even if the trigger lever 18 is pulled with the tip of the nose 6 pressed against the object to be driven, the operation of the trigger device 15 can be prevented. Thereby, blank driving can be prevented.

[0027]

According to the present invention, driving without a fastener in the magazine, that is, blank driving is prevented, fatigue of the driving member and the fastener driving machine due to idle driving is prevented, and the driving member and The damage to the fastener driving machine can be minimized. Further, according to the present invention, in addition to the blank hitting prevention function, a safety function can be added to prevent the hitting operation from being performed even when the magazine has a fastener coupling body and the trigger is accidentally operated. . Furthermore, in addition to the blank driving prevention function, a safety function in which the fixing tool cannot be driven in a state where the tip of the nose is not pressed against the driving target can be added.

[Brief description of drawings]

FIG. 1 is a sectional front view in which a part of a nailing machine as a fastener driving machine according to a first embodiment of the present invention is longitudinally sectioned.

2 is an operation explanatory view of the main part of the nail driving machine when the trigger lever is pulled in a state where the nail connecting body is in the magazine in the nail driving machine of FIG. 1;

FIG. 3 is an operation explanatory diagram of a main part of the nail driving machine when the trigger lever is pulled in a state where the nail connecting body is not in the magazine in the nail driving machine of FIG. 1;

FIG. 4 is a sectional front view in which a part of a nailing machine as a fastener driving machine according to a second embodiment of the present invention is longitudinally cross-sectioned.

5 is an operation explanatory view of the main part of the nailing machine in which the rod is rotated to the second rotation position and the trigger lever is pulled in a state where the nail coupling body is in the magazine in the nailing machine of FIG. 4;

6 is a perspective view showing a configuration of a rod, a rod guide, and a guide support portion of the nailing machine of FIG. 4, (A) showing a state in which the rod is in a first rotation position, and (B) showing the rod in FIG. Second
The state in a rotation position is shown.

FIG. 7 is a sectional front view in which a part of a nailing machine as a fastener driving machine according to a third embodiment of the present invention is longitudinally sectioned.

8 is a partial rear view showing a longitudinal section of a nose and a magazine of the nailing machine of FIG. 7. FIG.

9 is an operation explanatory view of the main part of the nailing machine when the trigger lever is pulled in a state where the nail connecting body is in the magazine and the nose tip is pressed against the driving object in the nailing machine of FIG. 7. Is.

10 is an explanation of the operation of the main part of the nailing machine when the trigger lever is pulled when the tip of the nose is pressed against the object to be driven in a state where the nail connecting body is not in the magazine in the nailing machine of FIG. It is a figure.

[Explanation of symbols]

 1 nailing machine as a fastener driving machine of the first embodiment 2 nailing machine main body 3 drive section 5 handle 6 nose 7 driving path 9 nail coupling body 10 magazine 11 pusher 15 trigger device 18 trigger lever 20 trip lever Tip 21 Trip lever 22 Valve pin 23 Trigger valve 25 Rod 26 Rod guide 27 Magazine hole 31 Fixing tool of the second embodiment Nail driver 33 Rod 34 Rod guide 35 Guide support 37 Knob 39 Notch 41 Nailing machine as a fastener driving machine of the third embodiment 42 Safety arm 43 First rod 45 Rod guide 46 Second rod 47 Pivot connection 50 Magazine hole 51 Pin

Claims (3)

[Claims] 1. A fastener driving machine main body including a handle, a nose connected to the main body, and a driving passage extending from the main body to drive the fixing tool, and the fixing tool. The fastener is supported by the driving tool body and is formed to accommodate a fastener connecting body formed by connecting a plurality of fasteners, and the leading fastener of the received fastener connecting body is supplied to the driving passage of the nose. And a magazine connected to the nose, and when the trigger device provided in the fastener driving machine body is operated, the fastener in the driving passage of the nose is driven into the object to be driven by the driving member. In the fastener driving machine configured as described above, the trigger device includes a trigger lever having a root portion pivotally supported by the fastener driving machine body, and a tip end of the trigger lever having a root-side end portion pivotally supported. The trip lever has its tip extended toward the base of the trigger lever. And a trigger valve that is provided in the fastener driving machine body and has a valve pin at a position where the intermediate portion of the trip lever comes into contact. A rod extending toward the side surface of the magazine is attached so as to be slidable in the axial direction, and a hole is formed on the side surface of the magazine with which the rod abuts so that the tip of the rod can enter the magazine. A fastener driving machine, characterized in that, when the fastener connecting body is accommodated, the movement of the rod is restricted by contacting the fastener connecting body so that the trip lever is held in an effective operating position. 2. The fastener driving machine according to claim 1, wherein the rod has an axial center between a first rotation position and a second rotation position on a rod guide of the fastener driving machine body. The rod is supported so that it can rotate around, and the trip lever side end of the rod comes into contact with the rod end when the trip lever moves to the rod side when in the first rotation position and is in the effective operating position. A fastener driving machine characterized in that a notch is formed which can be located, but cannot be located in an effective operating position even if the trip lever moves to the rod side when in the second rotation position. 3. A fastener driving machine main body including a handle, a nose which is connected to the main body, and has a driving passage extending from the main body to drive the fixing tool, and the fixing tool. The fastener is supported by the driving tool body and is formed to accommodate a fastener connecting body formed by connecting a plurality of fasteners, and the leading fastener of the received fastener connecting body is supplied to the driving passage of the nose. And a magazine connected to the nose, and when the trigger device provided in the fastener driving machine body is operated, the fastener in the driving passage of the nose is driven into the object to be driven by the driving member. And a trigger lever, the root of which is pivotally supported by the fastener driving machine body,
The trip lever is provided on the fastener driving machine main body, the root end of which is pivotally supported by the tip of the trigger lever, and the tip extends in the direction of the root of the trigger lever, and the intermediate portion of the trip lever contacts. A trigger valve having a valve pin in a position, and further, when the tip of the nose is pressed against an object to be driven, the trip lever is located in an effective operating position, and the safety extends from the tip of the nose toward the trip lever. In a fastener driving machine having an arm configured so that the fastener cannot be driven unless the tip of the nose is pressed against an object, a fastener driving machine main body is provided with a portion from the vicinity of the trip lever tip. A first rod extending toward the magazine is attached so as to be slidable in the axial direction, and a second rod is attached to an end of the first rod on the magazine side. Intermediate portion being pivotally connected to the ends of the trip lever side of the safety arm extends to engage the one end of the second rod, further,
On the side surface of the magazine, a hole that can enter the inside is formed, and a pin that slides so that the hole can move forward and backward is provided.
The pin extends so that the end extending from the magazine engages with the other end side of the second rod, the fastener coupling body is accommodated in the magazine, and the nose tip is pressed against the driving target. The fastener driving machine is characterized in that, when the pin is in contact with the fastener coupling body, movement of the first rod in the magazine direction is restricted so that the trip lever can be located at an effective operating position.