JP5354839B2 - Floor nailing machine - Google Patents

Abstract

A nailing machine comprising a tool body having a striking mechanism, and a contact nose provided at the tip end of the tool body so as to be able to reciprocated in a nail driving direction. The contact nose is provided at its tip end with a front face and a rear face that form an angle of up to 90 degrees. An ejecting port to which nails to be driven by the striking mechanism are fed is formed inside the contact nose, and is opened to the interface between the front and rear faces.

Description

  The present invention relates to a nailing machine mainly used for tongue joining work of floor materials.

  In general, in floor construction, a large number of floor materials are often constructed by jointing. This is because one floor material is placed on the base material, and a special nail such as a staple nail is diagonally driven from the corner of the base of the tongue protruding from the end surface toward the base material. Fix the above-mentioned tongue to the receiving groove formed on the end face of the next floor material and bring them into contact with each other. Further, from the corner corner of the base of the tongue formed on the opposite end face of the floor material, the same In this way, the nail is driven obliquely, and this tongue is further fitted into the receiving groove of the next floor material.

  In such floor construction, it is necessary to drive nails into the corners formed by the tongues and the end surfaces of the floor material at an angle of 45 degrees. However, the corner between the tongue and the floor material end face of the base is narrow, and the nailing machine is driven at an angle of 45 degrees with respect to the floor material. It is easy to come off the corner. If the nail driving position is misaligned, cracks and swelling of the surface of the floor material may occur, or the head of the nail may protrude from the surface of the floor material, resulting in poor fitting with the receiving groove of the next floor material. Will occur.

Therefore, as a means for solving such inconvenience, a floor construction nailing machine having a wedge-shaped tip portion where a nail is ejected is known. Since the tip portion is sharp, it reaches the corner corner of the base of the tongue, and the tip portion hits the corner corner and stabilizes, and there is an advantage that it is easy to drive a nail from the corner corner of the floor material.
Japanese Patent No. 3531313

  However, although the conventional nailing machine for floor construction is excellent in that it guides the driving position and the driving attitude, as disclosed in Patent Document 1, it is directly connected to the tip of the nail injection port. It is a structure in which a gap is formed between the wedge-shaped tip portion that hits the floor material. That is, a space is created between the nail injection port and the corner of the floor material. Since the nail is not supported in this space, the nail posture is not sufficiently maintained, and when driving into a hard floor material such as solid wood, the nail bends in the space where the nail cannot be sufficiently held and buckling occurs There was a problem to do.

  The present invention solves the above-mentioned problems, and can securely drive the nail pierced from the injection port into the corner of the base of the floor material so as to reliably prevent buckling of the nail. It is an object of the present invention to provide and provide a nailing machine that can be used.

In order to solve the above-mentioned problem, the invention according to claim 1 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 for the striking mechanism. Floor construction in which the tip of a contact nose formed with an injection port that slidably guides a screwdriver and a driver for driving a nail is pressed against the corner of the base of the floor material and the nail is driven from the tip of the injection port A nailing machine for use in the present invention, in which the injection port is opened at the tip of the contact nose, the tip surfaces continuously formed on both sides of the injection port are respectively tapered surfaces, and the angle between the taper surfaces on both sides is 90 °. The tip of these tapered surfaces is pressed against the corner corners of the base of the tongue, and nails are driven in. The tapered surface is formed separately in the width direction on the left and right sides, and the central portion is lowered to form a recess. Forming Characterized in that was.

  According to the first aspect of the present invention, the tip surface of the contact nose is formed at 90 degrees or less, and the nail injection port is opened at the top of the tip surface. In addition, since the injection port is opened at the top of the tip surface, there is almost no gap between the tip of the injection port and the corner portion. Therefore, since the nail struck out from the injection port is held sufficiently stably until it completely comes out from the injection port, buckling of the nail can be reliably prevented.

  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 of the tool body 2, and a contact nose 4 A rectangular magazine 5 for supplying a connecting nail (staple nail) to an injection port 6 formed inside, and the leading nail supplied from the nail supply path of the magazine 5 to the contact nose 4 constitutes the hitting mechanism. The driver 7 is driven by a driver 7 integrally coupled with the hitting piston.

  The striking mechanism includes a driver 7 that is slidably received in the injection port 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 details of the contact nose 4 are omitted, the contact nose 4 is provided so as to be able to reciprocate in the nail driving direction, its tip 4a protrudes from the tool body 2, and the other end 4b is a contact lever of the trigger 12 as shown in FIG. Fifteen springs 16 are provided so as to be engageable, and are always biased in a direction protruding from the tool body 2. Then, 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 port 6. As shown in FIG. 4, the injection port 6 opens at the top 19 of the tip surface 17. In addition, it is preferable that the front surface 17a (refer FIG.3 and FIG.5) incline the front end surface 17 with respect to the said injection port 6 at about 40 degree | times.

  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 2 of the nailing machine moves downward, but the contact nose 4 moves upward relative to the tool body 2, and the trigger 12 is effectively activated. Therefore, the leading nail can be driven 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 port 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 port 6 and the corner portion 22. Accordingly, the tip of the staple nail 23 struck out from the ejection port 6 is struck into the corner corner 22 at the moment when it is ejected from the opening end of the ejection port 6, so that the tip of the staple nail 23 does not fluctuate. As the driving progresses, the posture of the staple nail 23 becomes stable. As described above, the position of the staple nail 23 is unstable from immediately after the staple nail 23 exits the ejection port 6 until it is driven into the floor material 20 to some extent, but the opening of the ejection port 6 and the floor material 20 are unstable. Since there is almost no gap between the staple nail 23 and the staple nail 23, the staple nail 23 is continuously held in the injection port 6 until it is driven into the floor material 20 after leaving the injection port 6. It is kept sufficiently stable until it is finished. Therefore, it is possible to reliably prevent the staple nail from buckling during driving.

  Note that the length of the front surface 17a and the rear surface 17b of the front end surface 17 of the contact nose 4 may be equal to or longer than the protruding length of the tongue 21 as shown in FIG.

  Also, as shown in FIGS. 6 and 7, the nailer is less likely to tilt in the lateral direction if the width of the tip surface 17 of the contact nose 4 is secured to some extent. However, if it is too wide, there is a problem that it is difficult to use because it is difficult to understand where the staple comes from. On the other hand, the front surface 17a of the front end surface 17 of the nailing machine is separately formed on the left and right sides, and the central portion 17c is lowered. The central portion 17c serves as a mark for the driving position, and the staple nail 23 is driven out therefrom. It has come to understand that.

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 a perspective view of the front-end | tip part of a contact nose. It is an expanded sectional view of a state where nails are driven into the floor material. It is a perspective view of the front side of the principal part of a contact nose. It is a front view of the principal part of a contact nose.

Explanation of symbols

2 Tool body 4 Contact nose 6 Injection port 17 Tip surface 19 Top 20 Floor material 21 Spike 22 Corner

Claims (1)

At the tip of a tool body provided with a striking mechanism, it is provided so as to be able to reciprocate in the nail driving direction, and constitutes a safety device for the striking mechanism, in which a nail and a driver for driving the nail are slidably guided A floor nailing machine for driving a nail from the tip of the injection port by pressing the tip of the contact nose that forms the injection port against the corner of the base of the tongue of the floor material,
The injection port is opened at the tip of the contact nose, the tip surfaces continuously formed on both sides of the injection port are respectively tapered surfaces, and the angle between the taper surfaces on both sides is set to 90 degrees or less. The tip of is pressed against the corner corner of the base of the tongue, and a nail is driven in,
A floor nailing machine characterized in that the tapered surface is formed separately in the width direction on the right and left sides, and a concave portion is formed by lowering the central portion .

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