JP2006007345A - Driving pitch indicator for fastener driving tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fastener driving tool which can carry out screw driving with a predetermined pitch from a location where a fastener has been driven, while moving forward. <P>SOLUTION: The screw driving tool is formed of a driving mechanism for driving a driver bit, a nose section 4 forming a hollow ejection port for guiding the driver bit, and a magazine 5 for housing a number of fasteners connected together. The screw driving tool is constructed such that the fasteners in the magazine 5 is supplied into the ejection port formed in the nose section 4, and the fasteners supplied into the ejection port are driven in a direction of the tip of the nose section 4 by the driver bit. Herein the magazine 5 has marks 10, 13 indicated on a side surface and an upper surface thereof at locations that are spaced predetermined dimensions away from the center of the ejection port of the nose section 4. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a screw driving machine capable of driving a screw or nail at a predetermined pitch at the time of work such as, for example, flooring of a house building, screw tightening work or wall nailing work, etc. The present invention relates to a driving pitch display device for fastener driving tools such as the above.

  As an example of a fastener driving machine, a screw supplied into an injection port formed in a nose portion attached to the tip of a housing is driven and rotated in the injection port by a driver bit that is driven and rotated. 2. Description of the Related Art There is known a screw driving machine which is driven toward a workpiece to be placed arranged at the tip. In such a screw driving machine, a connecting screw wound in a coil shape is stored in a cylindrical magazine connected to the rear side of the nose portion, and the connecting screws in the magazine are sequentially supplied via a supply mechanism. The screwdriver is continuously driven by operating the driver bit continuously by operating the trigger lever formed at the base of the grip portion formed integrally with the housing, while supplying into the injection port. I am trying to drive into.

  There is a construction standard that is set to drive and install screws at predetermined dimensional intervals, such as 100 mm, 150 mm, or 200 mm, when attaching flooring or wall surfaces in residential buildings with the screwdriver, When constructing nails and screws at predetermined intervals based on such standards, draw a reference line using a swing-down or ink-out device at the construction site, and then use a convex or the like at regular intervals for each standard dimension. The mark was put on and the tip of the injection port of the screwdriver was applied to this mark position to drive the screw. Thus, since the operation | work which attaches the mark according to a reference | standard dimension is performed at the time of screwing-in construction, there existed a problem that this work was cumbersome and troublesome and the workability | operativity of fastener construction was impaired.

In order to deal with the above problems, a mark display means is formed on the lower surface side of a cylindrical magazine that accommodates a large number of connecting screws in a conventional screwdriver, with a pointed portion protruding in the bottom direction of the magazine. Then, by pressing the tip of the mark display means against the surface of the driven material during the screw driving operation by this screw driving machine, on the surface of the driven material that is a predetermined distance away from the position of the screw being driven, There has already been proposed a method in which a screw can be driven at predetermined intervals from the immediately preceding screw driving position so that the next screw driving position is marked and displayed.
JP 2004-74316 A

  In the screwing operation with a normal screwing machine, the screwing machine should be moved forward when positioning the screwing machine to the next construction position after the screwing operation with the screwing machine. Therefore, with the conventional mark display means formed by protruding the tip from the bottom of the magazine, it is not possible to display the mark on the front side of the screwdriver, and the screw is driven into the mark position. I can't. Even when the screwdriver is moved forward so that the mark display means protruding on the lower surface of the magazine is aligned with the screw that was installed immediately before, the operator should look into the lower surface of the magazine. Otherwise, it is impossible to confirm the coincidence between the mark display means and the screw, and there is a problem that it is difficult to perform screw driving at a predetermined pitch interval while moving the screw driving machine forward.

  The present invention eliminates the above-described conventional problems, and facilitates operations such as screw driving at a predetermined pitch interval from a position where the fastener driving tool such as a screwdriver is moved forward while moving the fastener driving tool forward. It is an object of the present invention to provide a fastener driving tool capable of performing the above.

  In order to solve the above problems, a fastener driving tool driving pitch display device according to the present invention is housed in a housing and driven by a driver bit by power such as compressed air, and is attached to the front end of the housing. And a nose part forming a hollow injection port for guiding the driver bit, and a magazine connected to the rear side of the nose part and configured to receive a number of fasteners connected to each other. The fastener in the magazine is supplied into the injection port formed in the nose portion, and the fastener supplied in the injection port is driven out toward the tip of the nose portion by a driver bit driven through the drive mechanism. In the fastener driving tool, the side surface of the magazine and the upper surface of the magazine And wherein the displaying form marks on predetermined dimension position from the center position of the exit port of the nose portion.

  As described above, according to the present invention, the fastener in the magazine is supplied into the injection port formed in the nose portion, and the fastener supplied into the injection port is nose by the driver bit driven through the drive mechanism. In the fastener driving tool which is driven out in the tip direction of the part, the mark is displayed and formed on the side surface of the magazine and the upper surface of the magazine at a predetermined dimensional position from the center position of the injection port of the nose part. By moving the driving tool forward and aligning the mark of the predetermined dimension formed on the magazine with the already applied fastener, it becomes possible to drive in and apply fasteners such as nails and screws at a pitch of the predetermined dimension. . Further, since the mark of a predetermined dimension is formed on the side surface and the upper surface of the magazine, it is possible to visually recognize the fastener and the mark that have already been constructed in the normal driving work posture, and the fastener at a predetermined pitch interval. Driving operation can be performed easily.

  An object of the present invention is to make it easy to perform screw driving and the like at a predetermined pitch interval from a position where it has already been moved while moving a fastener driving tool such as a screwdriver to the front side. This is realized by displaying a mark at a predetermined size position from the center position of the injection port of the nose portion on the upper surface of the nose portion, and more specific examples will be described below.

  FIG. 1 is a side view showing a screw tightening machine driven by compressed air as an example of a fastener driving tool in which a driving pitch display device of the present invention is implemented. The screw driving machine 1 has a grip portion 3 integrally formed. A nose portion 4 forming a hollow injection port for guiding a screw toward a workpiece to be driven is attached below the formed housing 2. A cylindrical magazine 5 is connected to the nose portion 4 to receive a connecting screw that is wound in a coil shape by connecting a number of screws, and is formed between the nose portion 4 and the magazine 5. Further, the connecting screw in the magazine 5 is sequentially supplied into the injection port of the nose portion 4 along the supply guide 6 by a supply mechanism formed in the supply guide 6.

  The housing 2 accommodates a drive mechanism driven by compressed air composed of a piston, a cylinder and the like, and a driver bit driven by this drive mechanism is slidable within the injection port of the nose portion 4. The screw supplied to the injection port is driven out toward the tip of the nose portion 4 by driving the driver bit by a driving mechanism. Further, an air motor 7 driven by compressed air is disposed above the magazine 5, and the rotation of the air motor 7 is transmitted to the driver bit via a speed reduction mechanism composed of a plurality of gears. A screwdriver screw is driven to rotate by driving a driver bit propelled in the injection port.

  A nose top 8 is provided at the tip of the nose portion 4 to guide and guide a screw driven out from the injection port of the nose portion to the surface of the workpiece. The nose top 8 is slidably held along the injection port with respect to the nose portion 4, and the nose top 8 is driven by positioning the screw driving machine 1 to the driving position of the driven material. It is arranged so as to protrude further in the direction of the tip than the tip of the injection port of the nose portion 4 so as to be in sliding contact with the material. In addition, a trigger lever 9 is provided at the base of the grip portion 3 so that it can be operated by a finger of an operator holding the grip portion. The screw driver 1 is operated by the operator. And the nose top 8 is activated by being pressed against the surface of the material to be driven and sliding.

  On the side surface of the cylindrical magazine 5, marks 10 a, 10 b, and 10 c are formed at predetermined distances La, Lb, and Lc, respectively, from the center of the injection port formed in the nose portion 4. In this embodiment, the distances La, Lb, and Lc are set to 100 mm, 150 mm, and 200 mm, respectively, and the marks 10a, 10b, and 10c corresponding to these distances La, Lb, and Lc are the centers of the injection ports. Are formed by number marks 11 indicating the distances La, Lb, and Lc from each other and an arrow mark 12 formed toward the bottom of the magazine 5, whereby screws are applied at pitch intervals of 100 mm, 150 mm, and 200 mm. To be able to.

  Further, as shown in FIG. 2, numerical marks 14 indicating the distance dimensions at the positions of distances La, Lb, Lc from the center of the injection port are provided on the upper surface side of the magazine 5 in the same manner as the marks 10a, 10b, 10c. Marks 13 a, 13 b, and 13 c are formed by the arrow marks 15 directed in the side surface direction of the magazine 5. The mark 10 formed on the side surface of the magazine 5 and the mark 13 formed on the upper surface of the magazine are formed not only on one side surface of the magazine 5 but also on both side surfaces of the magazine 5, for example, by a left-handed operator. These marks 10 and 13 can be visually recognized in the working posture even when the screw driving operation is performed.

  These marks 10a, 10b, and 10c by the number mark 11 and the arrow mark 12 and the marks 13a, 13b, and 13c by the number mark 14 and the arrow mark 15 are printed together with the coating that is applied to the surface of the magazine 5 and indicates the handling precautions. You may make it form, or you may form by a stamp etc. at the time of shaping | molding of the magazine 5 shape | molded with a plastic material. Further, a sticker with an adhesive printed with the marks 10a, 10b, 10c, 13a, 13b, and 13c by the number marks 11 and 14 and the arrow marks 12 and 15 is printed, and the seal is attached to the completed magazine 5 as necessary. You may do it.

  FIG. 3 shows a state in which screws are driven at a pitch of 150 mm onto a floor surface or the like that is installed horizontally by the screw driving machine 1 according to the above embodiment. The nose portion 4 is arranged so as to be perpendicular to the surface of the construction material, the tip of the nose portion 4 of the screw driving machine 1 is positioned at the first screw driving position, and the nose top 8 is pressed against the workpiece. Then, the trigger lever 9 is further operated to activate the screw driving machine 1 to drive the first screw. Thereafter, the screw driving machine 1 is moved forward, and the head of the screw N in which the marks 10b and 13b formed at a distance Lb of 150 mm from the center of the injection port formed on the side surface or the upper surface of the magazine 5 are first driven. Then, the screw driving machine 1 is started again in accordance with the position and the screw is driven. In this way, by moving the screwdriver 1 forward, the screw N applied immediately before and the marks 10b and 13b formed at a distance Lb of 150 mm from the center of the injection port formed in the magazine 5 are matched, Screws can be driven into a horizontal floor or the like at a pitch of 150 mm.

  FIG. 4 shows a state in which a screw is driven into a vertical wall surface at an interval of 100 mm by the screw driving machine 1 according to the above-described embodiment. The screwdriver 1 is held so as to extend in the direction, and the screw is driven while moving the screwdriver 1 from the lower end side of the wall surface to the upper end direction. The tip of the nose portion 4 of the screwdriver 1 is positioned at the lower end of the wall surface and operated by pressing the nose top 8 against the wall surface. Further, the trigger lever 9 is operated to activate the screwdriver 1 to drive the first screw. I do. Thereafter, the screw driving machine 1 is moved upward, and the head of the screw N in which the marks 10a and 13a formed at a distance La of 100 mm from the center of the injection port formed on the side surface or the upper surface of the magazine 5 are first driven Then, the screwdriver 1 is started again. In this way, by moving the screwing machine 1 upward and making the screw N applied immediately before and the marks 10a, 13a formed at a distance La of 100 mm from the center of the injection port formed in the magazine 5, Screws can be driven into a vertical wall surface at a pitch of 100 mm.

  In the above embodiment, the marks 10a, 10b, 10c formed on the side surface of the magazine and the marks 13a, 13b, 13c formed on the upper surface of the magazine are formed by the number marks 11, 14 and the arrow marks 12, 15. The number marks 11 and 14 are not necessarily formed, and the colors of the arrow marks 12 and 15 may be changed at predetermined pitch intervals. Furthermore, this straight line may be connected from the side surface to the upper surface. Further, the arrow marks 12 and 15 do not necessarily have an arrow shape, and may be a simple straight line display. In this way, the marks 10a, 10b, 10c and the marks 13a, 13b, 13c are simply formed on the side surface and the upper surface of the magazine 5, so that the weight of the screw driving machine 1 itself does not increase, and a predetermined value is obtained. Even when working without screwing at pitch intervals, it will not get in the way. In the embodiment, a cylindrical magazine has been described, but a linear magazine may be used. Alternatively, a cylindrical magazine may be rotated 90 degrees in the grip direction.

  Although the above embodiment has been described based on a screw driving machine driven by compressed air, the fastener driving tool is not limited to the screw driving machine shown in the above embodiment, for example, an impact is generated in a cylinder. By means of combustion gas generated by burning compressed air or combustible gas in which a nail arranged in the injection port of the nose portion is driven into the driven material through a driver connected to a piston that is activated The present invention can also be applied to a nailing machine adapted to operate.

The side view of the screwing machine as an example of the fastener drive tool which implemented the driving pitch display apparatus of this invention. The top view of the same screwdriver as FIG. Perspective view of screwdriver in the state of screwing into a horizontal floor Perspective view of screwdriver in the state of screwing into a vertical wall

Explanation of symbols

1 Screwdriver (fastener drive tool)
5 Magazine 10 Mark 11 Number mark 12 Arrow mark 13 Mark 14 Number mark 15 Arrow mark

Claims (1)

A drive mechanism that is housed in the housing and that drives the driver bit by power such as compressed air, and a nose portion that is attached to the tip of the housing and forms a hollow injection port that guides the driver bit And a magazine which is connected to the rear side of the nose portion and accommodates a number of fasteners connected to each other, and the fastener in the magazine is placed in the injection port formed in the nose portion. In the fastener driving tool that is driven and driven out in the tip direction of the nose portion by the driver bit driven through the driving mechanism, the fastener supplied into the injection port is provided on the side surface of the magazine and the upper surface of the magazine. A mark is displayed and formed at a predetermined position from the center position of the injection port of the nose portion. DOO pitch display driving of the fastener driving tool according to claim.

Images