JP2004154870A - Nailing depth adjusting device for nailing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a nailing depth adjusting device which is simple in structure, low in cost, available in wide application range, and positively starts its nailing operation. <P>SOLUTION: In implementation of the nailing depth adjusting device for a nailing machine, which is low in cost and available in extended application range, a nailing machine main body 1 includes a boss portion 4 having a flange portion 4b and a female screw portion 2 into which a male screw portion 5 is screwed, and a latch 8 having an elastic engaging portion 8a is mounted on a peripheral surface of a screw body having the male screw portion 5, followed by engaging the elastic engaging portion with a recess formed in a peripheral surface of the boss portion, and then a head 5a of the screw body is arranged at a location on which an abutting portion 6a of a contact arm 6 abuts. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a driving depth adjusting device for a nailing machine.
[0002]
[Prior art]
The driving depth adjusting device needs to adjust the driving depth according to the nail length and the material on which the nail is driven, and is an essential device in a nailing machine. For this reason, the driving depth has been adjusted by variably setting the movement stroke of the contact arm that protrudes from the tip of the injection port of the nose from which the nail is driven and is relatively movable with respect to the nose (for example, see Patent Document 1). ).
[0003]
[Patent Document 1]
JP-A-59-167675 (FIG. 1)
[0004]
[Problems to be solved by the invention]
Although the driving depth can be adjusted by the configuration of Patent Literature 1, there is a risk that the driving operation may not be able to be started depending on the position of the adjusting rod, and the configuration is not simple and the operation is difficult. Was.
[0005]
An object of the present invention is to eliminate the above-mentioned disadvantages of the prior art, to provide a simple and inexpensive driving depth adjusting device having a wide application range.
[0006]
[Means for Solving the Problems]
The above object is achieved by providing a boss having at least one concave portion on the outer periphery, a large-diameter flange at the lower end, and a female screw portion at the shaft center in the nailer body above the contact arm, and fitting the female screw portion of the boss portion. A threaded body having a male screw portion and a large diameter head, a cylindrical dial attached to the head of the threaded body, and a groove provided above the dial, and inserted through holes at both ends of the groove. And a latch having an elastic engaging portion that engages with the concave portion of the boss portion at both ends thereof, and contacts the upper end of the contact arm by the screw body, the dial, and the latch to regulate the movement stroke of the contact arm. This is achieved by configuring the adjusting body.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described with reference to FIGS.
The internal thread 2 shown in FIG. 1 is formed at the axis of a cylindrical boss 4 projecting downward from a flange surface 3a of a nose 3, which is a component of the nailing machine main body 1. Several recesses 4a are provided on the outer periphery of the boss 4, and a flange 4b is provided on the lower end of the boss 4 (FIG. 4).
[0008]
The screw body having the external thread portion 5 screwed into the female thread portion 2 has a large diameter head 5a which is in contact with the upper end of the contact arm 6, and a cylindrical dial 7 is provided on the outer periphery of the head portion 5a with a pin. 11 is attached. Above the dial 7, a groove 7b having two holes 7a at both ends is formed, and the latch 8 is fitted into the groove 7b, and the elastic engaging portions 8a (two places) provided on the latch 8 The boss 4 is inserted into the hole 7a, protrudes into the dial 7, and is fitted into the recess 4a of the boss 4.
[0009]
The contact arm 6 is supported so as to be movable between a set position and a raised position in the direction of the injection port 10 in parallel with the moving direction of the driver blade 9 integrated with a piston (not shown). It is always biased and pressed. The ascending position is determined when the upper end contact portion 6a of the contact arm 6 contacts the male screw head 5a.
[0010]
In the case where the penetration of the nail is large, when the dial 7 is rotated in the floating direction, the male screw 5 moves in the direction of the contact arm 6, that is, downward in the figure. Then, the rising position of the contact arm 6 changes to the injection port 10 side with respect to before the operation of the dial 7. At this time, in the vicinity of the injection port 10, the tip of the contact arm 6 protrudes from the injection port 10 by the moving amount of the male screw 5, and the insertion amount of the nail, that is, the driving depth is adjusted.
[0011]
When the dial 7 is rotated, the elastic engagement portion 8a of the latch 8 is fitted and disengaged from the concave portion 4a on the outer periphery of the boss portion 4, so that a click feeling is generated and the operation feeling is good. Further, when the dial 7 is further rotated, the engaging portion 8a of the latch 8 is locked to the flange portion 4b provided at the end of the boss portion 4, and the rotation of the male screw portion 5 is prevented (FIG. 8, FIG. 8). 9). Therefore, the driving depth adjustment amount is limited, and the external thread 5 does not come off from the internal thread 2.
[0012]
When the nail head travels from the surface of the plate, the dial 7 can be appropriately adjusted by rotating the dial 7 in the sinking direction opposite to the floating direction. If the dial 7 continues to be rotated in the lowering direction, the male screw portion 5 comes into contact with the flange portion 4b of the female screw portion 2 and becomes the position where the nail enters most.
[0013]
【The invention's effect】
As described above, according to the present invention, it is possible to provide an inexpensive and widely applicable driving depth adjusting device.
[Brief description of the drawings]
FIG. 1 is a partial sectional view showing an embodiment of a driving depth adjusting device of the present invention.
FIG. 2 is a partially enlarged view showing a main part of FIG. 1;
FIG. 3 is a side view and a bottom view showing a dial constituting the device of the present invention.
FIG. 4 is a side view showing a boss constituting the apparatus of the present invention.
FIG. 5 is a sectional view taken along line AA of FIG. 4;
FIG. 6 is a side view showing a screw body constituting the device of the present invention.
FIG. 7 is a side view showing a latch constituting the device of the present invention.
FIG. 8 is a partial cross-sectional view corresponding to FIG. 2, showing a state where the nail is most floating.
FIG. 9 is a sectional view taken along the line BB of FIG. 8 in which illustration of a dial is omitted.
[Explanation of symbols]
1 is a nailing machine main body, 2 is an internal thread, 3 is a nose, 3a is a flange surface, 4 is a boss, 4a is a recess, 4b is a flange, 5 is a male thread, 5a is a head, 6 is a contact arm, 6a is a contact portion, 7 is a dial, 7a is a hole, 7b is a groove, 8 is a latch, 8a is an elastic engagement portion, 9 is a driver blade, 10 is an ejection port, and 11 is a pin.

Claims (1)

A contact arm that is movable relative to a nose protruding in the nail driving direction from the nailing machine main body; and an adjusting body provided above the contact arm in the moving direction and having a contact end with the contact arm. In a nailing machine in which the contact depth can be adjusted so that the movement stroke of the contact arm can be variably set and the driving depth can be adjusted,
At least one recess on the outer periphery, a large-diameter flange at the lower end, and a boss having a female thread at the shaft center are provided on the nailer body above the contact arm, and the male thread is fitted into the female thread of the boss. And a screw body having a large diameter head, a cylindrical dial attached to the head of the screw body, and a dial provided in a groove provided above the dial, and both ends are dialed through holes at both ends of the groove. A latch having a resilient engaging portion that protrudes inward and engages with a recess of the boss portion, wherein the adjusting body is constituted by a screw body, a dial, and a latch. apparatus.

Images