JP6772490B2 - Driving tool - Google Patents

Description

The present invention relates to a driving tool for driving a stopper such as a nail or a screw into a material to be driven, and more particularly to a driving tool having a structure for facilitating maintenance of an injection path.

In this type of driving tool, for example, when the material to be driven is hard, the stopper may not be launched normally, and the stopper may bend and become clogged in the nose portion (so-called nail clogging). When such nail clogging occurs, the contact parts and the like attached to the nose portion are removed to expose the injection path of the stopper, and then the stopper is removed.

At this time, in a structure in which the contact member is urged in the protruding direction by a spring, the spring may fall when the contact part is removed, and the spring may be lost or the spring may be difficult to assemble. There was a problem.

As a method for solving such a problem, Patent Document 1 discloses a structure in which a spring is left on the tool body when a contact component (guide plate) is removed to prevent the spring from falling. ..

JP-A-2010-125777

However, in the structure described in Patent Document 1 described above, even if the contact component is removed, the injection path at the location where the spring is arranged is not exposed. That is, since the area opened when the contact component is removed is small, there is a problem that it is difficult to remove the stopper that caused the nail clogging. In particular, in the case of a tool for driving a stopper by the force of a compression spring, the driver for driving is often covering the injection path, which makes it difficult to work.

Even in the structure described in Patent Document 1, if the springs are arranged so as to be laterally displaced so that the injection path is not blocked by the spring, the injection path can be largely exposed and the stopper can be easily removed. .. However, if the position of the spring is shifted, the part deviated from the center of the contact part will be urged by the spring, so that an eccentric load will be generated on the contact part and the load will not be stable, or the contact member will tilt and "galling". There is a problem such as "" occurs.

Therefore, it is an object of the present invention to provide a driving tool that does not cause the spring to fall when the contact component is removed and can greatly open the injection path.

The present invention has been made to solve the above-mentioned problems, and is characterized by the following.

The invention according to claim 1 is a driving tool for driving a stopper fired from an injection port into a material to be driven, and has a nose portion forming a guide groove for guiding the stopper to the injection port and the guide groove. A guide plate provided so as to cover the guide plate, a contact member slidable with respect to the guide plate and pressable against the material to be driven, and an urging means for urging the contact member in the ejection direction of the stopper. The urging means is integrally assembled to the guide plate or the contact member, and the urging means is removed from the nose portion in a state of being assembled to the guide plate or the contact member. It is characterized by being possible .

The invention according to claim 2 is characterized in that, in addition to the feature points of the invention according to claim 1, the urging means is provided on the front surface of the guide plate .

The invention according to claim 3 is characterized in that, in addition to the feature points of the invention according to claim 1 or 2, the contact member is provided on the front surface of the guide plate .

The present invention is as described above, and the urging means is integrally assembled to the guide plate or the contact member. According to such a configuration, the urging member does not fall when the guide plate and the contact member are removed. Further, since the urging member can be removed integrally, the open area of the injection path can be increased.

It is the external perspective view which saw the driving tool from the left side. It is the external perspective view of the driving tool seen from the right side surface, and is the figure in the state which exposed the inside of the magazine. It is the external perspective view of the driving tool seen from the right side surface, and is the figure in the state which the switch pressing member is removed. It is the external perspective view of the driving tool seen from the front, (a) the state before being pressed against the driving material, (b) the state after being pressed against the driving material. It is a side view of the driving tool, and is (a) a view of the state before pressing against the driving material, and (b) the state after pressing against the driving material. It is a partially enlarged perspective view of the vicinity of the nose portion, and is the figure which shows the internal structure of the urging means before pressing against the driving material. It is a partially enlarged perspective view of the vicinity of the nose portion, and is the figure which shows the internal structure of the urging means after being pressed against a driving material. It is a partially enlarged perspective view of the vicinity of the nose portion disassembled. A partially enlarged front view of the vicinity of the nose, (a) a view in which a contact member and a guide plate are attached, (b) a view in which only the contact member is removed and a guide plate is attached, and (c) a contact. It is the figure in the state which the member and the guide plate are removed.

An embodiment of the present invention will be described with reference to the drawings.

The driving tool 10 according to the present embodiment is configured to shoot a stopper such as a screw or a nail from the injection port 10a and drive the stopper into the material to be driven. The driving tool 10 drives a stopper by a driver 16 driven up and down by a predetermined power source. In the present embodiment, the driving operation is performed using the battery pack 40, which is detachably provided with respect to the tool body 11, as a power source. The power source of the driving tool 10 is not limited to the battery pack 40, and for example, even if the driving operation is performed using compressed air or the driving operation is performed using the combustion pressure of combustible gas. Good.

As shown in FIG. 1, the tool body 11 of the driving tool 10 has an output unit 12 having a built-in operating mechanism and the like for performing a driving operation, and a grip unit 13 connected at a substantially right angle to the output unit 12. The trigger 15 provided on the grip portion 13, the nose portion 17 integrally fixed to the axial tip side of the output portion 12 (the driving direction of the stopper), and the nose portion 17 are continuously provided behind the nose portion 17. It includes a magazine 14.

The trigger 15 is an operation unit for executing the driving operation, and is provided at a position where it can be operated with the index finger when the grip portion 13 is gripped. When the trigger 15 is pulled while the contact detection switch 22, which will be described later, is on, the operating mechanism built into the output unit 12 operates, and the driving operation is executed.

The magazine 14 accommodates a stopper ejected from the injection port 10a, and accommodates the connected stopper. The fasteners housed in the magazine 14 are sequentially guided in the direction of the nose portion 17 and used for driving.

The nose portion 17 is a portion where an injection port 10a for ejecting a stopper is formed, and is formed so as to project from the tip of the tool body 11. A driver 16 for launching a stopper is slidably housed inside the nose portion 17. That is, as shown in FIG. 8, a guide groove 17a for guiding the stopper to the injection port 10a is formed in the nose portion 17, and the driver 16 moves up and down in the guide groove 17a to guide the guide groove 17a. The stopper supplied to the inside is formed so as to be ejected from the injection port 10a. A stopper supply mechanism is provided behind the nose portion 17. This stop supply mechanism executes a feed operation in conjunction with the driving operation. By this feed operation, the fasteners housed in the magazine 14 are sequentially fed to the nose portion 17.
A guide plate 18 and a contact member 20 are attached to the front surface of the nose portion 17.

The guide plate 18 is a plate-shaped member that cooperates with the nose portion 17 to form an injection path for the stopper. As shown in FIG. 8, the guide plate 18 is attached so as to cover the guide groove 17a of the nose portion 17. By covering the guide groove 17a of the nose portion 17 with the guide plate 18, an injection path through which the stoppers can pass is formed.

The contact member 20 is slidably provided on the outside (front surface) of the guide plate 18 and is pressed against the material to be driven. The contact member 20 is always urged in the protruding direction by the urging means 30 described later.

The guide plate 18 and the contact member 20 according to the present embodiment are attached to the nose portion 17 by a fixture 21 such as a pin. That is, as shown in FIGS. 8 and 9 (c), the nose portion 17 is formed with a fixing hole 17b into which the fixture 21 can be inserted and fixed. The fixing holes 17b are provided on both sides of the guide groove 17a. Further, as shown in FIGS. 8 and 9 (b), the guide plate 18 is formed with a pin hole 18a capable of penetrating the fixture 21. The pin holes 18a are provided at two positions so as to overlap the fixing holes 17b of the nose portion 17. Further, as shown in FIGS. 8 and 9 (a), the contact member 20 is formed with a long hole 20b that can penetrate the fixture 21. The elongated holes 20b are provided at two locations so as to overlap the fixing holes 17b of the nose portion 17. A fixture 21 that penetrates the elongated hole 20b of the contact member 20 and the pin hole 18a of the guide plate 18 is fixed to the fixing hole 17b of the nose portion 17, whereby the guide plate 18 and the contact member 20 are noseed. It is detachably attached to the portion 17.

By the way, when the material to be driven is hard, the stopper may not be launched normally, and the stopper may be bent and clogged in the nose portion 17 (so-called nail clogging). When such nail clogging occurs, the guide plate 18 and the contact member 20 attached to the nose portion 17 can be removed to expose the injection path of the stopper, and then the stopper can be removed. At this time, as shown in FIGS. 8 and 9 (c), the front surface of the nose portion 17 is greatly opened and there is no obstructive member such as the urging means 30, so that the stopper can be easily removed.

The elongated hole 20b of the contact member 20 extends in the sliding direction of the contact member 20. Therefore, the contact member 20 can slide up and down along the elongated hole 20b.

The contact member 20 slides upward with respect to the nose portion 17 when pressed against the material to be driven, and the contact member 20 slides upward in this way to provide a safety mechanism for driving operation. Is now working. When the safety mechanism is activated, the operation of the trigger 15 becomes effective, and the stopper can be driven.

Specifically, this safety mechanism is housed inside the magazine 14 as shown in FIGS. 2 and 3, and includes a contact detection switch 22, a switch pressing member 23, and a sliding support shaft 24. ..

The contact detection switch 22 is a switch for detecting that the contact member 20 is pressed against the material to be driven. When the trigger 15 is operated while the contact detection switch 22 is on, the driving operation is executed. The contact detection switch 22 includes a switch box 22a containing parts, a button 22b projecting from the switch box 22a, and a swing member 22c attached so as to cover the button 22b.

The button 22b projects so as to face the back surface of the nose portion 17, and can be pressed in a direction orthogonal to the sliding direction of the contact member 20 (leftward in FIG. 5). When this button 22b is pressed, a detection signal is transmitted from the contact detection switch 22. When the operation signal of the trigger 15 is detected while this detection signal is being output, the driving operation is executed.

The swing member 22c is swingably attached to the switch box 22a and covers the front surface of the button 22b. The swing member 22c is attached so as to be inclined so as to face the switch push portion 23c of the switch push member 23 described later, and when the switch push member 23 moves upward, it is pushed by the switch push portion 23c and swings. It is designed to move and press the button 22b. By providing the swing member 22c, the button 22b can be pressed even if the contact member 20 does not move to the top dead center.

The switch pressing member 23 is for operating the contact detection switch 22 by moving up and down integrally with the contact member 20. The switch pressing member 23 is a metal fitting as shown in FIG. 3, and includes a protruding piece 23a projecting forward, a spring receiving portion 23b formed at the lower portion, and a switch pressing portion 23c projecting rearward.

The projecting piece 23a is a portion for engaging with the contact member 20, and as shown in FIG. 2, engages with the insertion hole 20c formed in the contact member 20. As a result, when the contact member 20 moves up and down, the switch pressing member 23 also moves up and down integrally with the contact member 20.

The spring receiving portion 23b is a portion for receiving the urging force of the return spring 25 of the sliding support shaft 24, which will be described later. The switch pressing member 23 is always urged downward by receiving the urging force of the return spring 25 by the spring receiving portion 23b. This prevents the switch pressing member 23 from unintentionally moving upward, and prevents erroneous detection of the contact detection switch 22.

The switch pressing portion 23c is a portion for pressing the button 22b when the contact member 20 moves upward, and is arranged so as to face the above-mentioned swing member 22c. When the contact member 20 moves upward and the switch pressing member 23 moves upward integrally, the swing member 22c swings by the switch pressing portion 23c, and the button 22b is pressed.

The sliding support shaft 24 is a member for guiding the vertical movement of the switch pressing member 23. A return spring 25 for urging the switch pressing member 23 downward is attached to the sliding support shaft 24.

The contact member 20 is always urged in the projecting direction by the urging means 30, and as shown in FIGS. 4A and 5A, the nose is not pressed against the material to be driven. It is in a state of protruding from the tip of the portion 17.

As shown in FIG. 8, the urging means 30 according to the present embodiment is integrally assembled to the upper part of the front surface of the guide plate 18. As shown in FIGS. 6 and 7, the urging means 30 is built in the cylinder portion 31 fixed to the guide plate 18, the shaft portion 32 provided so as to be retractable from the cylinder portion 31, and the cylinder portion 31. A spring 33 for urging the shaft portion 32 in the protruding direction is provided. The tip of the shaft portion 32 is engaged with a recess 20a formed on the opposite side of the contact member 20, and urges the contact member 20 toward the tip.

When the contact member 20 is pressed against the material to be driven, the contact member 20 slides in the counter-projection direction against the urging force of the urging means 30. That is, as shown in FIGS. 4 (b) and 5 (b), the contact member 20 moves upward. When the contact member 20 moves upward, as shown in FIG. 7, the shaft portion 32 is pushed up and the spring 33 contracts. When the contact member 20 is separated from the material to be driven, the shaft portion 32 is pushed up by the restoring force of the spring 33, whereby the contact member 20 returns to the protruding direction.

As shown in FIG. 9A, the shaft portion 32 of the urging means 30 is arranged on the center line C of the contact member 20. Therefore, the urging means 30 urges the contact member 20 on the center line C of the contact member 20, and urges the contact member 20 with a stable load. According to such a configuration, the contact member 20 can be smoothly slid without tilting and "galling".

An adjusting member 28 for adjusting the movable range of the contact member 20 may be provided. As shown in FIG. 9B, the adjusting member 28 according to the present embodiment is rotatably attached to the nose portion 17 by a bolt 28a, and is arranged on the front side of the driving tool 10.

The bolt 28a for attaching the adjusting member 28 to the nose portion 17 is also for attaching the nose portion 17 to the tool body 11 (the tip of the output portion 12). In this way, the number of parts is reduced by attaching the adjusting member 28 by the bolt 28a for attaching the nose portion 17. Further, since the adjusting member 28 can be easily attached and detached by removing the bolt 28a, for example, the presence or absence of the adjusting member 28 can be switched, and the type of the adjusting member 28 can be exchanged.

The adjusting member 28 is formed so that the distance from the rotation center to the peripheral surface is different at at least two places. Specifically, the protruding portion 28b protruding in the circumferential direction and the other outer peripheral portion 28d are formed so that the distance from the center of rotation to the peripheral surface is different. The adjusting member 28 determines the top dead center of the contact member 20 by engaging the abutting portion 20d of the contact member 20 with the peripheral surface thereof. In other words, the top dead center of the contact member 20 can be switched by switching between engaging the contact member 20 with the protruding portion 28b and engaging the contact member 20 with the outer peripheral portion 28d.

As described above, according to the present embodiment, the urging means 30 is integrally assembled with the guide plate 18 or the contact member 20. According to such a configuration, the urging member does not fall when the guide plate 18 and the contact member 20 are removed. Further, since the urging member can be removed integrally, the open area can be increased.

Further, the guide plate 18 and the contact member 20 are detachably attached to the nose portion 17 by a fixture 21 penetrating both of them. Therefore, the guide plate 18 and the contact member 20 can be removed only by removing the fixture 21, and the needle removing operation at the time of nail clogging can be easily performed. Since a wide range can be easily opened in this way, even if the driver 16 is placed at a position covering the injection path such as a tool for driving with a compression spring as a drive source, the driver 16 can be lifted or shifted. It is easy to remove the needle, and the needle removal work can be easily performed.

Further, the urging means 30 urges the contact member 20 on the center line C of the guide groove 17a. According to such a configuration, an unbalanced load is not generated on the contact member 20, and the contact member 20 can be operated stably.

In the above-described embodiment, the example in which the urging means 30 is integrally assembled to the guide plate 18 has been described, but the present invention is not limited to this, and the urging means 30 is integrally assembled to the contact member 20. You may do so. In this case, the shaft portion 32 of the urging means 30 is projected upward so that the shaft portion 32 engages with the guide plate 18 or the nose portion 17 to urge the guide plate 18 or the nose portion 17 upward. do it.

10 Driving tool 10a Injection port 11 Tool body 12 Output part 13 Grip part 14 Magazine 15 Trigger 16 Driver 17 Nose part 17a Guide groove 17b Fixing hole 18 Guide plate 18a Pin hole 20 Contact member 20a Recess 20b Long hole 20c Insertion hole 20d Reliable part 21 Fixture 22 Contact detection switch 22a Switch box 22b Button 22c Swing member 23 Switch pressing member 23a Protruding piece 23b Spring receiving part 23c Switch pressing part 24 Sliding support shaft 25 Return spring 28 Adjusting member 28a Bolt 28b Protruding part 28d Outer circumference 30 Biasing means 31 Cylinder 32 Shaft 33 Spring 40 Battery pack C Center line of guide groove

Claims (3)

It is a driving tool that drives a stopper fired from the injection port into the material to be driven.
A nose portion having a guide groove for guiding the stopper to the injection port, and a nose portion.
A guide plate provided so as to cover the guide groove and
A contact member that is slidable with respect to the guide plate and can be pressed against the material to be driven.
An urging means for urging the contact member in the ejection direction of the stopper,
With
The urging means is integrally assembled to the guide plate or the contact member .
The driving tool, characterized in that the urging means is removable from the nose portion while being assembled to the guide plate or the contact member . The driving tool according to claim 1 , wherein the urging means is provided on the front surface of the guide plate . The driving tool according to claim 1 or 2 , wherein the contact member is provided on the front surface of the guide plate .

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