JP2006341334A - Contact top storage structure for driving tools - Google Patents

Abstract

Contact top storage structure for driving tool which can easily and reliably store and remove the contact top and does not obstruct work. SOLUTION: A tool main body 2 having a striking mechanism and a tool main body 2 A magazine 5 for supplying fasteners to the injection path of the nose portion 4 provided in the lower part of the magazine, and a contact arm 12 provided so as to be movable in the vertical direction along the injection path of the nose portion. A storage portion 24 of the contact top 15 to be attached and detached is formed at the tip of the contact arm 12, and an opening / closing lid is provided at the opening of the storage portion 24.
[Selection] Figure 1

Description

The present invention relates to a contact top storage structure for storing a detachable contact top at the tip of a contact arm in a driving tool such as a nailing machine or a screw driving machine.

Generally, the driving tool is a tool for driving a fastener such as a nail or a screw into wood or concrete, but a contact arm is provided as a safety device. The contact arm is provided so as to be relatively movable along the injection path inside the nose portion, and is normally biased by a spring so as to protrude in the driving direction from the tip of the nose portion. When the tip of the contact arm is pressed against the driven material until the tip of the nose hits the driven portion of the driven material, the contact arm moves relatively to the opposite side of the pressed material. The trigger operation can be validated by detecting that the material has been hit.
The trigger valve activation operation for activating the driving tool is made effective.

  By the way, the tip of the contact arm is spring-biased so that it protrudes more in the driving direction than the tip of the nose, and when pressed against the material to be driven, it is damaged when the material to be driven is a relatively soft decorative material. Or indentations. In order to prevent such an inconvenience, a pressing operation is performed after a synthetic resin contact top is attached to the tip.

  Since the contact top may or may not be used, the magazine is usually provided with a contact top mounting when not in use, and the location and shape of the mounting so that the contact top does not fall off during work. Is devised.

  However, the contact top must be removable without using a tool so as not to reduce work efficiency. For this reason, in practice, the contact top may come off the mounting portion during operation, and in many cases, it is lost. In addition, since the mounting portion is provided at the outer peripheral position of the magazine portion, it is a factor that hits the hand when gripping the grip or hinders workability.

As a means for solving such inconvenience, a structure in which a contact top is attached to and detached from a holding bar provided on an upper part of a magazine is known.
JP 2005-7544 A

  However, the contact top is inserted and attached to the holding bar, and the contact top is always exposed to the outside, so it is easy to lose. It was a hindrance to my work.

  An object of the present invention is to solve the above problems and to provide a contact top storage structure for a driving tool that does not easily lose the contact top and does not obstruct work.

  In order to solve the above problems, the invention according to claim 1 is directed to a tool main body having a striking mechanism, a magazine for supplying fasteners to an injection path of a nose portion provided at a lower portion of the tool main body, and an injection path of the nose portion. A contact arm that can be moved in the vertical direction along the inside of the magazine, and a contact top storage portion that is attached to and detached from the tip of the contact arm is formed inside the magazine, and the opening of the storage portion is opened and closed. It is possible to do this.

  According to a second aspect of the present invention, the injection path is formed by a driver guide integrally provided with the tool body and a wear plate that is detachably overlapped with the driver guide. A contact top storage structure for a driving tool, wherein a storage portion for a contact top to be attached to and detached from the tip of the plate is formed.

  The invention according to claim 3 is characterized in that the magazine is a straight magazine, and the storage portion is opened and closed by a slider that pushes the nail of the magazine toward the injection path of the nose portion.

  According to the first aspect of the present invention, the contact top is formed in the magazine, and the storage portion of the contact top that is attached to and detached from the tip of the contact arm is formed so that the opening of the storage portion can be opened and closed. No part or the like is produced, so that the driving operation is not impaired. Moreover, since it can remove without using a tool, work efficiency does not fall.

  According to the second aspect of the present invention, since the storage portion is formed inside the slider that can slide along the straight magazine, the driving operation is not impaired and the slider is closed during actual driving. So the contact top will not be lost.

  Further, when exchanging the contact top, it is only necessary to open and remove the slider. Since the operator is accustomed to opening and closing the slider, it can be easily and quickly performed without impairing the work efficiency.

  In FIG. 1, reference numeral 1 denotes a nailing machine. The nail driver 1 includes a tool body 2 provided with a striking mechanism, a grip 3 disposed rearward from the tool body 2, a nose portion 4 provided at the tip of the tool body 2, and a nail connected to the nose portion 4 ( A rectangular magazine 5 for supplying pin nails), and the leading nail supplied to the nose portion 4 from the nail supply path 6 (see FIG. 3) of the magazine 5 is integrated with the striking piston constituting the striking mechanism. It is launched by a driver (not shown) coupled to the.

  The nose portion 4 is constituted by a driver guide 8 constituting a front wall and a wear plate 9 constituting a rear wall, and the driver guide 8 is detachably attached to the wear plate 9 by bolts 10 and is integrally coupled. Then, a nail injection path is formed between the two.

  In driving the nail, the trigger 11 is pulled to operate the trigger valve for activation, so that compressed air supplied from the air compressor is sent to the striking mechanism and the leading nail is driven out by the air pressure. The pulling operation 11 is linked to the operation of the contact arm 12 and is configured so that the trigger valve can be effectively operated when actually pressed against the workpiece.

  The contact arm 12 is provided so as to be movable in the vertical direction along the nose portion 4 provided at the lower portion of the tool body 2, and the tip end portion protrudes from the tip end of the nose portion 4 so that the nose is driven when driven. The operation of the trigger 11 is made effective by moving it upward relative to the portion 4.

  A connecting arm 12a is continuously provided below the contact arm 12, and a tip member 14 is connected to the tip of the connecting arm 12a.

  As shown in FIGS. 2 and 3, the tip member 14 is a member that has substantially the same outer shape corresponding to the shape of the lower part of the wear plate 9 and is slightly larger, and is formed thin from a metal such as iron or stainless steel. A contact top 15 made of an elastic material is fixed to the outer surface of the tip.

  Guide grooves 16 that engage with both side edges of the wear plate 9 are formed on both sides of the tip member 14. The guide groove 16 includes an upper guide groove 16a and a lower guide groove 16b. The lower side portions of the wear plate 9 are engaged with the guide groove 16 so that the tip member 14 can slide along the rear surface of the wear plate 9 while maintaining the engaged state.

  A receiving groove 17 is formed on one side of the upper portion of the tip member 14 so as to open laterally (outward).

  The contact top 15 is made of an elastic material such as rubber or synthetic resin, and is integrally fixed to the outer surface of the tip portion of the tip member 14.

  Next, the tip member 14 is attached to the nose portion 4. That is, as shown in FIG. 5, the tip member 14 is provided to be slidable along the rear surface of the wear plate 9. Further, a blocking portion 18 is formed on one side of the driver guide 8 to block the opening of the receiving groove 17 of the tip member 14 when coupled to the wear plate 9.

  In assembling the tip member 14 to the nose portion 4 and the connecting arm 12a, first, as shown in FIG. 3, the driver guide 8 is removed, and the tip member 14 is slid from the bottom of the wear plate 9 and its guide groove 16 is removed. The lower side portions of the wear plate 9 are engaged with each other. Next, as shown in FIG. 4, the front end of the connecting arm 12 a is engaged from the opening of the receiving groove 17 of the tip member 14. Finally, as shown in FIG. 1, the driver guide 8 is superposed on the front surface of the wear plate 9, and is tightened with a bolt 10 to be coupled together. When the tip member 14 is removed, the opposite may be done.

  Next, a storage portion for a replacement tip member 14 is formed inside the magazine 5.

  That is, as shown in FIG. 1, the magazine 5 is supported on a magazine main body 5a fixed to one side of a nose portion 4 for slidingly guiding the driver, and supported so as to be slidable in the longitudinal direction with respect to the magazine main body 5a. The connecting nail receiving portion is formed between the magazine and the side wall of the slider 20 facing each other. The inner surface of each side wall forms a guide surface for moving the connecting nail toward the nose portion 4.

  As shown in FIG. 6, the slider 20 slides along the magazine body 5a, and its rear end is held at the front end position by being locked to the magazine body 5a side. Work is prepared. On the other hand, at the time of nail loading operation, as shown in FIG. 1, the above-mentioned locking is released, the slider 20 is slid rearward of the magazine body 5a to open the nail receiving portion 21, and connected to the inner surface of the side wall of the magazine body 5a. The nail is configured to be loaded from the side.

  In addition, as shown in FIG. 6, in the nail accommodating portion 21 formed by the magazine body 5 a and the slider 20, the connecting nail is engaged with the rear end of the connecting nail a loaded in the accommodating portion. A pusher 22 for pressing forward is disposed so as to be movable along the feeding direction of the connecting nail. Although not shown, a compression spring is provided behind the pusher 22 to urge the connecting nail to be pressed forward.

  Next, as shown in FIG. 1, a storage portion 24 for the tip member 14 is formed inside the rear end portion of the slider 20. The storage portion 24 is opened to the side, and two locking projections 25 are formed from the bottom thereof. The distal end member 14 can be locked to the locking projections 25. Therefore, when attaching or removing the tip member 14 to or from the storage portion 24, as shown in FIGS. 1 and 6, the tip member 14 is engaged with the slider 20 being pulled back to open the storage portion 24, The slider 20 may be slid forward again to close the storage unit 24 as shown in FIG.

  As described above, since the storage portion 24 is formed inside the slider 20 and the magazine body 5a functions as an opening / closing lid, there is no particularly protruding portion as a whole, and therefore the driving operation is not affected. In addition, since the slider 20 is closed during actual hitting, the contact top 15 is not lost during work.

  Further, when exchanging the contact top 15, it is only necessary to open and remove the slider 20, and the exchanging without using a tool does not impair the working efficiency. Since the opening and closing of the slider 20 is an action that an operator is accustomed to, the slider 20 can be easily and quickly performed.

  In addition, although the above-mentioned embodiment is an example in case the contact top 15 is integral with the front-end | tip member 14 of the contact arm 12, it is the same also when the contact arm 12 and the contact top 15 are separate bodies.

  That is, FIG. 8 shows an example of a contact nose in which a part of the contact arm 12 also serves as a wear plate for the nose portion, and the contact arm 12 is configured to protrude from the tip of the driver guide 8. A nail injection path is formed between the driver guide 8 and the contact arm 12.

  In the above configuration, the contact top 15 is made of a synthetic resin, and as shown in FIGS. The concave portion 28 fitted into the tip of the arm 12 and the concave portion 29 fitted into the tip of the driver guide are continuously formed into a bag shape. An opening (not shown) for injecting a nail is formed at the bottom.

  The structure of the magazine 5 is the same as in the above example, and the storage portion formed on the slider may be configured so that the contact top 15 can be stored.

  Also in this case, the same effect as the above example can be obtained.

  The contact arm 12 may be configured separately from the nose portion, and in this case as well, the contact top is attached to the tip of the contact arm as in the above example. In addition, the contact top storage part may be formed inside the magazine, and the opening / closing lid may be provided at the opening of the storage part in the same manner as in the above example. Further, the driving tool is not limited to the one for driving the pin nail described above. The magazine is not limited to a straight magazine. It may be a cylindrical magazine.

  As described above, the contact top is formed in the magazine, and the storage portion of the contact top that is attached to and detached from the tip of the contact arm is formed. The opening portion of the storage portion is provided with the opening / closing lid. Does not occur and therefore does not interfere with the driving operation. Moreover, the contact top is not lost. Furthermore, since it can be removed without using a tool, work efficiency is not reduced.

  The driving tool may not be provided with a contact arm mechanism, and the contact top may be attached to and detached from the wear plate. In this case as well, a contact top storage portion that can be opened and closed may be formed in the magazine.

It is a perspective view of an example of a nailing machine concerning the present invention. It is a perspective view of a tip member. It is a perspective view of a nose part and a tip member in the state where a driver guide was removed. It is an expansion perspective view of the nose part in the state where the tip member was attached. It is the figure which looked at the cross section of the nose part from the bottom face. It is a side view of the state which pulled the slider. It is a side view of the state which closed the slider. It is a side view of the principal part of another nailing machine. (A) and (b) are perspective views of a contact top.

Explanation of symbols

4 Nose part 5 Magazine 12 Contact arm 15 Contact top 24 Storage part

Claims (3)

  A tool body having a striking mechanism, a magazine for supplying fasteners to an injection path of a nose portion provided at a lower portion of the tool body, and a contact arm provided to be movable in the vertical direction along the injection path of the nose portion A contact top storage structure for a driving tool, wherein a storage portion for a contact top to be attached to and detached from the tip of the contact arm is formed inside the magazine, and an opening of the storage portion can be opened and closed. .   The injection path is formed by a driver guide integrally provided with the tool main body and a wear plate arranged in a detachable manner on the driver guide, and a contact attached to the tip of the wear plate instead of the contact arm. A contact top storage structure for a driving tool, wherein a top storage portion is formed. The contact top storage of a driving tool according to claim 1, wherein the magazine is a straight magazine, and the storage portion is opened and closed by a slider that pushes the nail of the magazine toward the injection path of the nose portion. Construction.

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