JP2007253250A - Hook device of hammering tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To correspond to an external force applied from backward. <P>SOLUTION: A hook holder 7 rotatable around a centerline of a grip 2 is installed at a rear end of a tubular grip 2 formed on one side of a body 1 of a hammering tool, and a hook 5 is held by the hook holder 7. A hooking part 6 installed on one end of the hook is projected from the hook holder 7. The hook is made movable in a diameter direction of the grip 2 relative to the hook holder 7, and rotatable in a direction that the hooking part 6 is inclined toward the body 1. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

The present invention relates to a hook device for hooking on an operator's belt when carrying a driving tool such as a nailing machine or a screwing machine.

  Generally, after driving tool gripping, it is convenient to carry driving tools such as nailing machines, screw driving machines and screwing machines to the site of nail driving work, or to temporarily replace them with other types of tools. A hook is provided at the end so that the hook can be hooked on the waist belt. However, since the hook is made of metal and is exposed to the outside of the body of the nail driver, it makes strong contact with the material to be screwed during work such as screw tightening, When the tool is not in use, it may be temporarily placed on the surface of the material to be driven. At this time, if the tool is placed carelessly or the driving tool slides down from the hand, the impact may damage the surface of the target member. In addition, the hook may bend or break.

  Therefore, a technique is known in which the hook is not fixed to the grip, but can be rotated or moved out and retracted.

According to the above technique, it is possible to deal with external forces from almost any direction.
JP-A-10-109281

  However, according to the above technique, as described above, it falls sideways (turns), but cannot fall back and forth (longitudinal direction of the grip). For this reason, for example, when an external force is applied obliquely from behind, the hook may be bent because it cannot be bent or rotated correspondingly.

  It is an object of the present invention to provide a hook device for a driving tool that can solve the above-described drawbacks and can cope with an external force applied from behind without losing the conventional function.

  In order to solve the above-mentioned problem, the invention according to claim 1 is provided with a hook holder that is rotatable around the center line of the grip at the rear end of the cylindrical grip formed on one side of the body of the driving tool. The hook holder holds the hook, the hook portion provided on one end side of the hook protrudes from the hook holder, the hook is movable in the diameter direction of the grip with respect to the hook holder, and the hook portion is the body. It is characterized in that it can be rotated in the direction of falling to the side.

  According to a second aspect of the present invention, the portion of the hook that is held by the hook holder is formed by two parallel metal wires, and the height of the annular protruding edge formed on the periphery of the hook holder is increased. The notch part into which the hook is dropped is formed on the projecting edge, and a pair of locking pieces that can be locked to the hook are formed on the bottom surface of the hook holder. A storage portion having a concave cross section that can store the end opposite to the hook portion and opens to the outside is formed.

  According to the first aspect of the present invention, the hook holder can be rotated around the center line of the grip, so that the hook holder can be hooked from either the left or right side by rotating, and the hook is in a direction perpendicular to the center line. Since it is movable, the hook can be pulled out and retracted when it is used and when it is not used.

  In addition, when the driving tool is accidentally dropped, the hook rotates or retracts, so that the hook can be prevented from being bent.In addition, when receiving external force from the rear of the grip, the hook Can tilt and fall.

  As described above, since it is possible to deal with forces from all directions, the impact on the hook is reduced, and inconveniences such as breakage can be prevented.

  According to the second aspect of the present invention, when an external force is applied from the oblique rear side as described above, the hook is detached from the locking piece, the end portion of the hook jumps out of the storage portion, and a part of the hook. Can be tilted forward and fall down by moving along the notch. For this reason, an impact is relieved and inconveniences, such as breakage, can be prevented.

  FIG. 1 is a side view of a nailing machine. This nailing machine has a grip 2 continuously provided on the rear side of a body 1, a nose part 3 is provided below the body 1, and a magazine 4 is provided behind the nose part 3. The compressed air from the air compressor is taken in from the rear end portion of the grip 2, the striking mechanism in the body 1 is driven using this compressed air as a driving source, and the nail supplied from the magazine 4 to the nose portion 3 is removed. It strikes and is driven into the material to be driven.

  A hook 5 is attached to the rear end of the grip 2. The hook 5 is formed by bending a metal wire into a U-shape and bending the metal wire substantially at a right angle at an intermediate portion to form a hook portion 6, and an intermediate portion 24 of a parallel linear portion a opposite to the hook portion 6 is formed as a Z portion. It is bent into a letter shape, and a narrow part a1 and a wide part a2 are formed on both sides thereof (see FIG. 3).

  The hook 5 is held by a synthetic resin hook holder 7, and the hook holder 7 is rotatably supported by a support member 16, thereby forming a hook unit A.

  As shown in FIGS. 2 and 3A, 3B, and 3C, the hook holder 7 has a circular hole 10 formed in the center of the disk portion 8 and an annular protruding edge portion 11 formed on the periphery. The height of the protruding portion 11 is larger than the linear portion a. An annular groove 12 having an L-shaped cross section is formed on the outer periphery of the disc portion 8.

  Further, the projecting edge portion 11 is formed with a notch portion 13 into which the linear portion is inserted. The length of the notch 13 is also formed larger than the diameter of the linear part a. The interval between the notch portions 13 on both sides is formed substantially the same as the interval of the narrow portion a1 of the linear portion a. On the bottom surface of the hook holder 7, a pair of locking pieces 14 that can be locked to the linear portion a is formed on both sides of the circular hole 10 on one side (side closer to the notch 13). Has been. These locking pieces 14 are arranged so as to face each other, and the interval between the locking pieces 14 is formed substantially the same as the interval of the wide portion a2 of the linear portion. Further, a storage portion 15 is formed on the opposite side of the locking piece 14 across the circular hole 10. The storage portion 15 has a concave cross section, and is open not to the inside of the hook holder 7 but to the outside as shown in FIG. The interval between the storage portions 15 is substantially the same as the interval between the locking pieces 14.

  In attaching the hook 5 to the hook holder 7, the narrow portion a <b> 1 of the hook 5 may be dropped into the notch portion 13, the wide portion a <b> 2 may be locked to the locking piece 14, and stored in the storage portion 15. The part stored in the storage part 15 of the wide part a2 is exposed to the outside.

  Next, the support member 16 includes an annular portion 17 and a support piece 18 that protrudes from a part of the annular portion 17, and a screwing portion 19 is formed at the distal end portion of the support piece 18.

  Then, with the hook 5 attached to the hook holder 7, the annular portion 17 of the support member 16 is engaged with the annular concave groove 12 of the hook holder 7, and in this state, the protruding edge portion 11 of the hook holder 7 is gripped. The screw 21 of the screwing portion 19 of the support member 16 is screwed to the screw receiving portion 20 disposed on the second side and formed at the lower end of the rear end of the grip 2. Note that the central circular hole 10 of the hook holder 7 is fitted into a cylindrical portion 23 formed at the rear end portion of the grip 2.

  As a result, the hook holder 7 can rotate around the center line of the grip 2, and the hook 5 has a notch at the intermediate portion 24 (see FIG. 3A) between the narrow portion a <b> 1 and the wide portion a <b> 2. Within the range of movement between 13 and the locking piece 14, it can move in a direction perpendicular to the center line. Further, as shown in FIG. 4, when strongly pressed in the direction perpendicular to the grip 2, the hook 5 moves in the diameter direction of the grip 2, the narrow portion a1 is disengaged from the locking piece 14, and the end portion of the wide portion a2 Jumps out of the storage unit 15.

  Further, when the hook 5 receives an external force in the direction of the arrow P in FIG. 2, that is, obliquely behind the grip, the hook 5 is disengaged from the locking piece 14 and the storage portion 15 and sinks as in FIG. As shown in FIG. 5, the narrow part a1 moves along the notch part 13 and pivots in a direction in which the hook part 6 falls to the body 1 side, so that the hook 5 can be tilted forward and fall down. . When an external force is applied in the direction of the arrow Q, that is, from the rear of the grip 2, it can be tilted forward and fall down without sinking.

  As described above, since the hook holder 7 can be rotated around the center line of the grip 2, it can be hooked from either the left or right side by rotating, and the hook 5 can be moved in a direction perpendicular to the center line. Therefore, the hook 5 can be pulled out or retracted during use and when not in use.

  Further, when the driving tool is accidentally dropped, the hook 5 rotates or retracts, so that the hook 5 can be prevented from being bent.

  Furthermore, when an external force is received from the direction of arrow P or Q in FIG. 2, the hook 5 can be retracted and tilted forward as described above.

  As described above, it is possible to deal with forces from all directions, so that the impact on the hook 5 is alleviated and inconveniences such as breakage can be prevented.

  In addition, a hook is not necessarily limited to the example comprised with a linear material. For example, the hook portion 6 may be formed in a plate shape.

  The object to which the hook device is attached may not be a nailing machine. The present invention can also be applied to a driving tool such as a screw driving machine or a screw tightening machine.

1 is a side view of a nailing machine according to the present invention. It is an enlarged view of the principal part of the said nailing machine. (A) (b) (c) is the front view of a hook unit, a rear view, and sectional drawing on the XX line of the same figure (b), respectively. It is explanatory drawing which shows the retracted state of a hook. It is explanatory drawing which shows the state in which the hook fell down.

Explanation of symbols

2 Grip 5 Hook 7 Hook Holder 13 Notch 14 Locking Piece 15 Storage

Claims (2)

  A hook holder that can rotate around the center line of the grip is provided at the rear end of the cylindrical grip formed on one side of the body of the driving tool, and the hook is held on the hook holder and provided on one end side of the hook. The hook portion protrudes from the hook holder, the hook can be moved in the diameter direction of the grip with respect to the hook holder, and the hook portion can be rotated in a direction to fall to the body side. Hook device for driving tool.   The portion of the hook that is held by the hook holder is formed by two parallel metal wires, while the height of the annular protrusion formed on the periphery of the hook holder is made larger than the wire, A notch for dropping the hook is formed on the projecting edge, and a pair of locking pieces that can be locked to the hook and an end of the hook opposite to the hooking portion are formed on the bottom surface of the hook holder. The hook device for a driving tool according to claim 1, wherein a storage section having a concave section that can store the section and opens to the outside is formed.

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