JP2007168006A - Nailing machine for constructing floor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To simplify the structure, thereby not impairing a compact shape and easily grasping the nailing position in constructing the floor. <P>SOLUTION: In this nailing machine for constructing the floor, the tip of a contact nose 4 provided on the tip of a tool body 2 including an impact mechanism to reciprocate in the nailing direction and constituting a safety device of the impact mechanism is pressed to the angular corner part of the base of a tongue of a floor material, and a nail is driven from the tip of an injection part 5 formed in the interior of the contact nose 4. A nail clearing hole 32 for removing the nails jammed in the interior of the injection part 6 is formed at the tip of the contact nose 4. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a nail removal mechanism for removing a nail clogged in a nailing machine mainly used for tongue joining work of a floor material.

  In general, in floor construction, a large number of floor materials are often constructed by jointing. This is done by placing a single floor material on the base material, and then fixing a special nail such as a staple diagonally from the corner of the base of the tongue protruding from the end face toward the base material. Then, the above-mentioned tongue is fitted into the receiving groove formed on the end surface of the next floor material and brought into contact with each other, and the same is applied from the corner corner of the base portion of the tongue formed on the opposite end surface of the floor material. In this method, the nail is driven obliquely, and this tongue is further fitted into the receiving groove of the next floor material.

  In such floor construction, nails are driven into the corners formed by the tongue and the end face of the floor material, but when the nailing machine is pressed because the corner corners are small The nailer is likely to become unstable, and there is a risk of poor driving. For this reason, in the nailing machine for floor construction, the tip of the injection part of the nail is formed wider than the nail so that it is easy to stabilize when pressed.

In general, this type of nailing machine is provided with a mechanism for removing the clogged nail because the nail may be clogged in the nose portion due to poor driving.
Japanese Patent No. 3531313 Japanese Patent Laid-Open No. 7-328952

  However, there is a problem that it is difficult to know where the nail comes out from the wide tip.

  In addition, many conventional nail removal mechanisms are provided with an open / close lid at the nose and open the lid to remove the clogged nail, making the opening / closing work cumbersome, and the structure is complicated and the tip where the nail is driven out A part becomes large and it is unpreferable for the nailing machine for floor construction. Furthermore, since the opening is large, there is a problem that durability is sacrificed.

  The present invention eliminates the above-mentioned problems, and provides a nail removal mechanism for a floor construction nail driver that does not impair the compact structure with a simple structure and that can easily grasp the nail driving position during floor construction. Let that be the issue.

  In order to solve the above-mentioned problem, the invention according to claim 1 is provided with a tip of a contact nose that is provided at the tip of a tool body provided with a striking mechanism so as to be reciprocable in the nail driving direction and constitutes a safety device of the striking mechanism. A floor construction nail driver for driving a nail from a tip of an injection part formed inside a contact nose by pressing against a corner corner of a base part of a floor material, wherein the injection part is placed at a tip of the contact nose. It is characterized in that a nail removal hole is formed except for the nail clogged inside.

  The invention according to claim 2 is characterized in that, in claim 1, the nail hole is formed on the back side of the tip of the contact nose.

  According to a third aspect of the present invention, in the first or second aspect, a magazine cover is slidably provided at a lower portion of the nail supply magazine formed on the back side of the injection portion, and protrudes from an end portion of the magazine cover. The above-mentioned nail hole is covered with the formed covering portion.

  According to the invention of claim 1, since the nail hole except the clogged nail is formed in the tip of the contact nose, the nail is clogged in the injection part when driven. The clogged nails can be scraped off by inserting a screwdriver or a round metal bar from the nail hole.

  Further, since the nail opening is formed on the back side of the contact nose, the compact shape is not impaired.

  According to the invention of claim 2, since the nail hole is formed on the back side of the tip end portion of the contact nose, the nail hole is easy to see in floor construction performed by tilting the nail driver, and the nail is driven out. It will also serve as a landmark for the location. Moreover, it is thin and easy to grasp the driving position, wide and stable, and easy to aim. In addition, since it is not necessary to add markings or parts or grooves for only knowing the driving position, the cost can be kept low.

  According to the invention of claim 3, since the nail hole is covered with the cover portion that is formed to protrude from the end of the magazine cover, the nail hole can be exposed by sliding the magazine cover when the nail is clogged. At the same time, since the nail hole is normally covered with the cover, it is possible to reliably prevent the nail from being driven out of the nail hole.

  1 is a perspective view of the nailing machine, FIG. 2 is a longitudinal sectional view of the nailing machine, and FIG. 3 is an enlarged view of a main part thereof. In the above figure, reference numeral 1 denotes a nailing machine. The nailing machine 1 includes a tool body 2 having a striking mechanism, a grip 3 disposed rearward from the tool body 2, a contact nose 4 provided so as to protrude from the tip (lower end) of the tool body 2, and a contact A rectangular magazine 5 for sequentially supplying a connecting nail (not shown) in which a plurality of nails (staple nails) are connected to an injection portion 6 formed inside the nose 4 is provided, and injection is performed from a nail supply path of the magazine 5. A leading nail (hereinafter simply referred to as a nail) of a connecting nail supplied to the portion 6 is driven out by a driver 7 integrally coupled with a striking piston 8 constituting the striking mechanism.

  The striking mechanism includes a driver 7 that is slidably received in the injection unit 6 and strikes a nail, a striking piston 8 that is integrally coupled at the upper end of the driver 7, and a striking that accommodates the striking piston 8 slidably. A trigger valve 13 for controlling the opening and closing of the main valve 11 by the operation of the main valve 11 and the trigger 12 for opening and closing the cylinder 9, the air chamber 10 for storing the compressed air in the tool body 2, and the upper end of the impact cylinder 9 It is composed of

  Although the contact nose 4 is not described in detail in detail, the contact nose 4 is provided so as to be able to reciprocate in the nail driving direction, its lower part 4a protrudes from the tool body 2, and its upper end part 4b is as shown in FIG. It is provided so as to be able to engage with the spring 16 of the contact lever 15, and is always biased in a direction protruding from the tool body 1. The lower part 4a and the upper end part 4b of the contact nose 4 are connected as shown by a dotted line. When the contact nose 4 is pressed against a material to be driven such as a floor material at the time of driving, the contact nose 4 is moved upward relative to the tool body 2 as indicated by a dotted line in FIG. To rotate the contact lever 15. In this state, when the trigger 12 is pulled, the valve stem 18 is effectively pushed in to activate the trigger valve 13, and the main valve 11 is further opened to drive the striking piston 8 with compressed air in the air chamber 10. Is configured to do. Thus, the contact nose 4 has two functions of an injection function for driving out a nail and a safety device of the hitting mechanism.

  The hitting mechanism and the contact nose 4 itself may be known.

  By the way, the front end surface 17 of the contact nose 4 is formed so as to form an angle of 90 degrees or less on both sides of the injection portion 6. As shown in FIG. 3, the injection portion 6 opens at the top portion 19 of the distal end surface 17.

  Next, when the floor material is nail-fixed to the base material by floor construction with a nailing machine, first, the tip end surface 17 of the contact nose 4 is placed at the corner of the base portion of the tongue 21 of the floor material 20 as shown in FIG. Hit the corner 22. At this time, since the tip end surface 17 is formed at 90 degrees or less, the contact nose 4 can be reliably applied to the corner portion 22. Further, the front end surface 17 of the contact nose 4 is pressed against the floor material 20. As a result, the tool body 1 of the nailing machine moves downward, but the contact nose 4 moves upward relative to the tool body 1, and the trigger 12 is effectively activated. Therefore, the nail 23 can be driven out at an angle of about 45 degrees by pulling the trigger 12 for activation and operating the striking mechanism.

  The tip surface 17 of the contact nose 4 is formed to be equal to or smaller than the angle of the corner portion 22 of the base portion of the tongue 21 of the floor material 20, and the injection portion 6 is opened to the top portion 19 of the tip surface 17. Therefore, there is almost no gap between the tip of the injection part 6 and the corner part 22. Therefore, the tip of the nail 23 struck out from the injection portion 6 is driven into the corner portion 22 at the moment of exiting from the opening end of the injection portion 6, so that the tip of the nail 23 does not fluctuate. As the driving proceeds, the position of the nail 23 becomes stable. In this way, the position of the nail 23 is unstable until the nail 23 is driven into the floor material 20 to a certain extent immediately after it exits the injection portion 6, but the opening of the injection portion 6 and the floor material 20 Since there is almost no gap between them, the position of the nail 23 is continuously held in the injection portion 6 until it is driven into the floor material 20 to some extent after it exits from the injection portion 6 until it completely exits. It will be kept sufficiently stable. Therefore, it is possible to reliably prevent the nail from buckling during driving.

  By the way, a guide part 24 of the driver 7 is formed in the lower part of the tool body 2, and an injection part 6 that slidably accommodates the driver 7 and strikes the nail 23 is formed below the guide part 24. The upper back side of the injection part 6 opens at the front end of the magazine 5, and the lower part of the injection part 6 is constituted by a lower part of the contact nose 4 and a cover part 26 formed in the magazine 5.

  In addition, the connecting nail accommodated in the magazine 5 is supplied to the injection unit 6 in order from the first one. This nail is always moved forward through the connecting nail after the next position or directly. It is supported by a pushing pusher (not shown).

  The lower part of the contact nose 4 is composed of a contact nose main body 27 on the front side of the injection part 6 and a back plate 28 on the back side of the injection part 6.

  As shown in FIGS. 1 and 5, a U-shaped guide groove 30 (forming the injection portion 6) is formed in the center of the back surface of the contact nose body 27, and projecting pieces 31 are formed at the lower ends on both sides. . The tip of the projecting piece 31 constitutes the tip surface 17 described above and is formed in a wedge shape with an angle of 90 degrees or less.

  The back plate 28 covers the guide groove 30 of the contact nose main body 27 and is disposed between the both side protruding pieces 31 and fixed by welding. A slit-like nail hole 32 is formed in the upper center of the back plate 28. The width of the peg hole 32 is formed smaller than the groove width of the guide groove 30. Further, an inclined surface 33 having the same angle as the inclination of the rear surface side of the tip surface of the contact nose 4 is formed at the lower end of the back plate 28.

  Next, the cover portion 26 is arranged on the upper portion of the back plate 28 and covers the upper portion of the guide groove 30, but is formed to project downward from the front end of the magazine cover 34 instead of the contact nose 4. As shown in FIG. 6, the magazine cover 34 is provided so as to be slidable in the longitudinal direction of the magazine 5, and opens and closes a nail accommodating portion inside the magazine 5 by sliding. The cover 26 is formed so as to cover the guide groove 30 on the back side of the contact nose 4 and to cover a part of the nail hole 32 of the back plate 28 when the nail receiving portion is closed. Yes. That is, as shown in FIG. 7, the contact nose 4 may be set to a range that covers most of the nail hole 32 when it is moved upward relative to the tool body 2 by pressing against the workpiece. A recess 35 is formed on the front surface of the cover 26. The recess 35 is for receiving the upper portion 28a of the back plate 28 that moves simultaneously when the contact nose 4 is pressed against the material to be driven.

  As described above, the injection portion 6 is formed by the guide groove 30 of the contact nose main body 27, the back plate 28 that covers the open end of the guide groove 30 from the rear side, and the cover portion 26 of the magazine cover 34. Therefore, when driving the nail, the driver 7 strikes the leading nail supplied from the magazine 5 into the injection unit 6, so that the nail passes through the guide groove 30 of the injection unit 6 and is driven out from the tip. Then, when the nail is clogged in the injection part 6, the magazine cover 34 is moved backward as shown in FIG. As a result, the guide groove 30 on the back side of the contact nose 4 is exposed and at the same time the nail removal hole 32 is also exposed. .

  Further, since the nail driver is tilted at the time of floor construction, the nail hole 32 of the back plate 28 is formed at an easy-to-see position. Therefore, it becomes a mark of the position where the nail 23 is driven out. Moreover, since the contact nose 4 is thin, it is easy to grasp the driving position (corner corner), so the combination of the contact nose 4 and the nail removal mechanism stabilizes the tip but makes it difficult to understand the driving position. Even if it is a machine, the aim is improved. In addition, since it is not necessary to add markings or parts or grooves for only knowing the driving position, the cost can be kept low.

  Furthermore, when the contact nose 4 is pressed against the material to be driven, when the nail is driven, most of the nail hole 32 is covered by the cover portion 26, so that it is possible to reliably prevent the nail from being driven out from the nail hole 32. it can.

  Furthermore, since the nail removal mechanism has a simple configuration in which the nail removal hole 32 is formed on the back side of the contact nose 4, the compact shape is not impaired. Further, by increasing the thickness of the back plate 28, sufficient strength can be ensured at a low cost.

  Note that the nail hole 32 is not limited to the slit shape as described above. It may be a round shape or a long hole, and may be provided on one side of the back plate 28 at an offset position.

It is a perspective view of an example of a nailing machine concerning the present invention. It is a longitudinal cross-sectional view of the said nailing machine. Enlarged view of the main part of FIG. It is an expanded sectional view of a state where nails are driven into the floor material. It is a disassembled perspective view of the lower part of a contact nose. It is a perspective view in the state where a magazine cover was pulled out. It is a perspective view of the state where the contact nose was pressed against the floor material.

Explanation of symbols

2 Tool body 4 Contact nose 6 Injection part 32 Nailing part

Claims (3)

Contact is made by pressing the tip of the contact nose that constitutes the safety device of the hitting mechanism against the corner of the base of the floor material at the tip of the tool body provided with the hitting mechanism so as to be able to reciprocate in the nail driving direction. A floor nailing machine for driving nails from the tip of the injection part formed inside the nose,
A nail removal mechanism for a floor nailing machine, characterized in that a nail hole for removing a nail clogged inside the injection portion is formed at a tip portion of the contact nose.   The nail removal mechanism for a floor construction nailer according to claim 1, wherein the nail removal hole is formed on the back side of the tip end portion of the contact nose.   A magazine cover is slidably provided at a lower portion of the nail supply magazine formed on the back side of the injection portion, and the nail hole is covered with a cover portion protruding from an end portion of the magazine cover. The nail removal mechanism for a floor construction nailer according to claim 1 or 2.

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