JP2006007343A - Body protector for fastener driving tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a body protector which is moldable as a single component member by using an inexpensive mold, and easily mountable on a plurality of surfaces of a fastener driving tool. <P>SOLUTION: The body protector is formed of a plurality of protector pieces 13, 14 conforming to two or more mutually adjacent outer surfaces of a body 2 of the fastener driving tool, and at least one thin hinge portion connecting the protector pieces 13, 14 together, and the body protector is integrally molded with the protector pieces expanded via the hinge portion 15. Herein the thin hinge portion 15 is arranged such that its outer surface does not make contact with a floor surface or the like when the protector pieces 13, 14 are mounted on the plurality of outer surfaces of the body by curving the hinge portion 15. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a fastener driving tool such as a screw driving machine in which screws connected to each other in a shaft portion are sequentially supplied to a punching portion and continuously screwed, and in particular, a finish material already applied by these tools is damaged. The present invention relates to a body protector that is mounted on the outer peripheral surface of the body of these fastener-driven tools in order to prevent them from slipping or dropping when the tool is placed on an inclined surface such as a roof.

  In general, in construction work using fastener driving tools such as screwdrivers and nailers, a tool such as a screwdriver is used when aligning the finishing material to be constructed next with a screwdriver etc. to the construction position. There are cases where the finishing material is aligned by placing it on the finishing material already applied, or the nailer is dragged on the finishing material during the positioning operation of the finishing material. In general, the body of fastener-driven tools such as nailers and screwdrivers is formed by painting on a metal surface, and the surface of the finish is relatively soft, such as gypsum board, floor material, and decorative board. There is a risk of damaging the surface. Further, while using the tool in this way, the paint on the body surface of the tool may be peeled off, and the appearance of the tool may be deteriorated.

In conventional fastener driving tools such as screwdrivers and nailers, in order to prevent the finishing material from being damaged when the tool is placed on the finishing material or the tool is dragged on the finishing material, 2. Description of the Related Art A protector piece made of a cushioning member such as rubber or plastic material is known to be bonded to the front or side of a body of a fastener driving tool. In this way, when the fastener driving tool equipped with the protector piece is placed on the surface of the finishing material, the protector piece formed on the body comes into contact with the finishing material, etc., so that the metal body comes into contact with the finishing material. To prevent damage to the finish. Moreover, even when the fastener driving tool is placed on an inclined roof, it can be prevented from slipping off due to the frictional resistance of the protector piece.
JP 2000-263469 A

  The protector piece in the conventional fastener driving tool such as the nailing machine and screwing machine is almost formed by a cushioning material such as rubber or plastic material. The protector pieces are separately molded as flat protector pieces, and these protector pieces are attached to the front surface of the tool and a predetermined place, for example. For this reason, each protector piece must be molded and produced as a separate part, which increases the part cost, and the number of assembling steps for attaching these protector pieces separately to the body increases, resulting in an increase in the assembling cost. There was a problem.

  In general, the body shape of a tool such as a nail driver or a screwdriver is formed in a three-dimensional shape. Therefore, the inner surface of the protector piece to be mounted on these surfaces is almost the same as the body shape. In addition, a large number of uneven patterns are formed on the surface side of the protector piece from the viewpoint of design. Since the protector piece has such a complicated shape, the protector piece for each part of the body must be molded by a dedicated molding die, resulting in an increase in the cost of parts. In addition, when two protector pieces to be attached to two adjacent surfaces intersecting at right angles are to be molded integrally, a mold that can be split vertically or an expensive mold that forms a slide mold is used. This is necessary and will increase the cost of parts.

  The present invention has been made in view of the above circumstances, and can be molded as one component by an inexpensive mold and can be mounted on a plurality of surfaces of a fastener driving tool as one component. An object is to provide a body protector for a tool.

  A body protector for a fastener driving tool according to the present invention is a fastener driving tool for a screw driving machine such as a screwdriver provided with a body in which a drive mechanism is housed and a grip portion is integrally formed toward a rear end side. A plurality of protector pieces corresponding to two or more adjacent outer surfaces of the body of the body are integrally molded in a shape developed through at least one thin hinge portion, and the hinge portions are bent to form a plurality of protector pieces. When the tool is mounted on a plurality of outer surfaces of the tool, the outer surface of the thin hinge portion is disposed so as not to contact the floor surface or the like.

  According to the body protector such as the screw driving machine of the present invention, a plurality of protector pieces corresponding to two or more adjacent outer surfaces of the body of the fastener driving tool are developed through at least one thin hinge portion. Since it is molded integrally, there is no need to separately mold protectors to be mounted on multiple surfaces of the fastener driving tool, and it can be produced as a single part molded in a shape developed through a thin hinge, And since it shape | molds integrally with the shape expand | deployed via the hinge part, it can shape | mold using a cheap type | mold, Therefore A manufacturing cost can be reduced. Furthermore, the number of assembling steps can be reduced, and the assembling cost can be reduced.

  Further, when the plurality of protector pieces are mounted on the plurality of outer surfaces of the tool by bending the hinge portion, the outer surface of the thin hinge portion is disposed so as not to contact the floor surface. Therefore, it is possible to prevent the thin hinge portion from coming into contact with the floor surface or other parts due to vibration during operation or storage, and wear away, and the protector piece can be prevented from peeling off from the outer surface of the fastener driving tool.

  The object of the present invention is to mold two or more adjacent fastener driving tool bodies for the purpose of being molded as a single part with an inexpensive mold and being mounted on multiple surfaces of the fastener driving tool as a single part. A plurality of protector pieces corresponding to the side surfaces are integrally molded in a shape developed through at least one thin hinge portion, and the hinge portions are bent to attach the plurality of protector pieces to a plurality of outer surfaces of the tool. In some cases, this is realized by arranging the outer surface of the thin hinge portion so as not to contact the floor surface or the like, and a more specific embodiment will be described below.

  FIG. 1 shows a screw driving machine as an example of a fastener driving tool equipped with a body protector according to the present invention. This screw driving machine 1 has a screw bit formed at the tip of a screw bit on a screw head. The screw is rotated while being engaged with the plus groove, and the screw is driven and driven toward the tip of the screw via the driver bit so that the screw is screwed into the workpiece. The screw driving machine 1 includes a hollow body 2 integrally formed with a grip portion 3 facing rearward, and a hitting cylinder for driving the driver bit in the axial direction in the body 2. A striking mechanism composed of a striking piston and the like is accommodated. Further, a nose portion 4 formed with a hollow injection port for slidably guiding the driver bit is attached to the lower side of the body 2 with a mounting bolt 5.

  A magazine 7 that houses a number of mutually connected screws via a supply guide 6 is connected to the rear side of the nose portion 4, and the magazine 7 is arranged inside the magazine 7 by a supply mechanism arranged along the supply guide 6. Are guided along the supply guide 6 and supplied into the injection port of the nose portion 4. The screw supplied into the injection port is propelled toward the tip of the injection port by a driver bit driven by the striking mechanism. Further, an air motor 8 for rotationally driving the driver bit is disposed on the upper surface side of the magazine 7, and a screw for rotating the driver bit through a reduction gear mechanism or the like and propelling it by the driver bit. Is rotated in the screwing direction.

  Further, a cylinder cap 9 for closing the open end of the body 2 accommodating the striking mechanism is attached to the upper part of the body 2. In order to form a screw hole for attaching the cylinder cap 9 on the body 2 side, four bulging portions 10 are formed on the outer peripheral surface of the body 2, and the cylinder cap is formed in the screw hole formed in the bulging portion 10. The cylinder cap 9 is attached to the upper end portion of the body 2 by screwing a mounting bolt 11 that passes through the body 9. As shown in FIG. 2, the four bulging portions 10 protrude from the outer peripheral surface of the body 2, so that the cross-sectional shape of the upper portion of the body 2 is substantially a quadrilateral shape where the bulging portion 10 travels in four directions. Is formed.

  As shown in FIGS. 1 and 2, when the screwing machine 1 is placed on the floor surface or the like on the front side surface of the upper portion of the body 2 and one side surface adjacent thereto, the screwing machine 1 is arranged. A body protector 12 formed of rubber or plastic material is attached so as to cover a part of the outer surface of the body 2 so that the outer surface of the body 2 does not directly contact the floor surface or the finishing material. As shown in FIGS. 2 and 3, the body protector 12 includes a protector piece A <b> 13 that is attached so as to cover the front side of the upper portion of the body 2, and a protector piece that is attached so as to cover the side surface of one side of the upper portion of the body 2. The protector piece A13 and the protector piece B14 are integrally formed by a thin hinge 15 that can be bent easily.

  In FIG. 1, 16 is a trigger lever that can be operated by an operator to activate the screw driving machine 1, and 17 is a screw that is driven from the injection port of the nose portion 4 perpendicular to the surface of the workpiece. A contact member for guiding the state, an air plug for connecting an air hose for introducing compressed air for driving the striking mechanism and the like into the tool, and 19 for locking the screwdriver 1 to a belt of an operator This is a belt hook.

  As shown in FIG. 3 and FIG. 4, a large number of protrusions 20 that are considered in design are formed on the outer surface of the protector piece A13 and the protector piece B14 so as to be in contact with the floor surface or the like. To make it smaller. Further, as shown in FIGS. 2 and 5, irregularities formed on the inner side surfaces of the protector piece A13 and the protector piece B14 by the bulging portion 10 formed on the body 2 of the screwdriver 1 and the like. It is formed in a concave shape as a whole so as to cover the shape and adhere to these surfaces. Furthermore, as shown in FIG. 2, convex portions 23 and 24 corresponding to the concave portions 21 and 22 formed on the outer surface of the body 2 are formed on the inner surface of the protector piece A13 and the protector piece B14. The protrusions 23 and 24 are fitted into the recesses 21 and 22 of the body 2 so that the protrusions 23 and 24 can be securely attached to the attachment position.

  As shown in FIG. 6, the hinge portion 15 is formed with a thin portion between the protector piece A13 and the protector piece B14 so that the hinge portion 15 can be bent easily. The protector piece A13 and the protector piece B14 are integrated with the protector piece A13 and the protector piece B14 via the hinge 15 in a state where the inner side surface and the outer side surface of both the protector pieces 13 and 14 are deployed in the same direction. Molded and produced. In this way, a complicated mold for molding is used by integrally molding the protector pieces 13 and 14 with the thin-walled hinge portion 15 in a shape in which the inner side surface and the outer side surface are expanded in the same direction. Thus, it is possible to integrally form a plurality of protection pieces with an inexpensive mold, and the cost can be reduced.

  As described above, the body protector 12 in which the inner side surface and the outer side surface of the protector piece A13 and the protector piece B14 are deployed in the same direction and are integrally molded via the thin hinge portion 15 is the hinge portion 15. Is bent at a substantially right angle so that the protector piece A13 and the protector piece B14 are opposed to the front surface of the body 2 of the screwdriver 1 and one side surface adjacent thereto as shown in FIG. Placed in. The hinge portion 15 is formed along a concave portion for accommodating the bulging portion 10 that is formed to protrude from the outer surface of the body 2 of the screwdriver 1, and the protector piece is bent by bending the hinge portion 15. When A13 and the protector piece B14 are arranged on the front side and one side surface of the body 2 of the screwdriver 1, the outer surface of the hinge portion 15 is prevented from coming into contact with the floor surface, the ground surface, or the like. As a result, it is possible to prevent the thin hinge portion 15 from being worn by contact with the floor surface or the ground, and the protector pieces 13 and 14 being cut from the hinge portion 15.

  A state in which the body protector 12 according to the above embodiment is mounted on the body 2 of the screwdriver 1 will be described with reference to FIGS. As shown in FIG. 8, the protector piece A13 is fitted to the recess 21 formed on the surface facing the front side of the body 2 with the protrusion 23 formed on the inner surface of the protector piece A13. Mount on the front side of the body 2. At this time, the end portion is bonded and fixed to the surface of the body 2 by applying an adhesive or the like to the end portion side 12a where the hinge portion 15 of the protector piece A13 is not formed. From this state, as shown in FIG. 9, the protector is configured such that the convex portion 24 formed on the inner side surface of the other protector piece B14 is fitted into the concave portion 22 formed on the side surface of the body by bending the hinge portion 16. The piece B14 is attached to the side surface of the body 2. And the edge part 12b in which the hinge part 15 of protector piece B14 is not formed is adhere | attached and fixed to the surface of the body 2, and the assembly | attachment to the body 2 of the screwdriver 1 of the body protector 12 is completed. As described above, the protector pieces 13 and 14 to be mounted on a plurality of surfaces are integrally formed through the hinge portion 15 to form the body protector 12, thereby reducing the man-hours for assembling the fastener driving tool of the body protector 12 to the body 2. The assembly cost can be reduced.

  In the above embodiment, the two protector pieces to be attached to the front surface of the body and one side surface adjacent to the front surface are integrally formed through one hinge portion. Three protector pieces to be attached to one surface, or four protector pieces to be attached to four surfaces including the rear side surface, and each protector piece is integrated with two or three hinge parts. It may be molded. Furthermore, the present invention can be applied not only to the upper part of the body but also to a body protector that is attached to the lower part of the body or the rear end part of the grip part. Furthermore, although the said Example demonstrated the screw driving machine driven by compressed air, this invention is applicable to fastener drive tools, such as a nail driver and a staple driving machine driven by an electric power or gas pressure. Is possible.

The perspective view of the screwdriver equipped with the body protector of the present invention. The cross-sectional top view of the body of the same screwdriver as FIG. Perspective view showing the body protector in the assembled state Perspective view showing the front side of the molded body protector Perspective view showing the inner side of the molded body protector Cross section of molded body protector Sectional view of the body protector in the assembled state The perspective view which shows the state which has mounted | wore the protector piece A to the body front surface Furthermore, the perspective view which shows the state which has mounted the protector piece B to the body side surface

Explanation of symbols

1 Screwdriver 2 Body 3 Grip part 10 Swelling part 12 Body protector 13 Protector piece A
14 Protector piece B
15 Hinge part

Claims (1)

In a fastener driving tool such as a screwdriver having a body in which a driving mechanism is housed and a grip portion is integrally formed toward the rear end side, two or more adjacent outer surfaces of the body of the fastener driving tool are provided. When a plurality of corresponding protector pieces are integrally formed in a shape developed through at least one thin-walled hinge portion, and the hinge portion is bent to attach the plurality of protector pieces to a plurality of outer surfaces of the tool. A body protector for a fastener driving tool, wherein the outer surface of the thin hinge portion is arranged so as not to contact the floor surface or the like.

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