JP2533340Y2 - Plug unit for board - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plug unit for a board.

[0002]

2. Description of the Related Art Conventionally, in mounting a plug on a gypsum board, it has been necessary to work a pilot hole with an electric drill or the like, and then screw the plug into the pilot hole with a screwdriver or the like.

[0003]

[Problems to be Solved by the Invention] Therefore, it is necessary to prepare a plug mounting tool such as a drill for a pilot hole or a screwdriver, so that the mounting work cannot be started immediately.
When mounting the plug, drilling and screwing work were performed separately, so workability was poor.

Accordingly, an object of the present invention is to solve such a conventional problem and to provide a plug unit having good plug mounting workability.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a tool insertion through-hole made of plastic, having a spiral ridge on the outer periphery, and having a one-character cross section. And a strip-shaped insertion blade which can be inserted into the tool insertion through-hole of the plug, and the insertion blade is further distal than the distal end of the plug in the inserted state. The length is set so as to protrude, and the foremost end is formed in a tapered cutting edge, and the tapered cutting edge is formed in a substantially V-shaped or substantially U-shaped shape.

[0006]

In the plug unit constructed as described above, a strip-shaped insertion blade is inserted into the board screwing plug, and the insertion blade is made to protrude from the tip of the plug. (In the direction in which the plug is screwed by the helical ridge) and rotated, the tapered cutting edge of the insertion blade makes a hole in the board, and at the same time, the insertion blade cuts the tool insertion hole. The plug can be rotated integrally with the board, and the plug can be screwed into the board along the prepared hole.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the drawings showing embodiments.

FIGS. 1 and 2 show a plug unit according to the present invention. The plug unit includes a plastic board screw plug 1 and an attachment 2.

The plug 1 is tapered so as to decrease in diameter from the base end to the tip end, and has a spiral ridge 3 (functioning as a tapping screw) formed at a predetermined pitch on the outer periphery. A predetermined range of the tip of the strip 3 is formed in a saw blade shape.

Further, the plug 1 has a tool insertion through-hole 4 and a flat hole 6 having a character-shaped cross section along the axis, and the tool insertion through-hole 4 and the flat hole 6 are formed orthogonally. Is done.
That is, the holes 4 and 6 are combined to form a cross-shaped hole.
The width dimension A of the flat hole 6 is shorter than the width dimension B of the tool insertion through-hole 4, and is set so that only the tapered cutting edge 9 of the band-shaped insertion blade 7 described later can be inserted.

The attachment 2 has a strip-shaped insertion blade 7 that can be inserted into the tool insertion through hole 4 of the plug 1 and a hexagonal column-shaped shank portion 8.

In a state where the insertion blade 7 is inserted into the tool insertion through hole 4 and fitted, the attachment 2 and the plug 1 rotate integrally.

In the state where the insertion blade 7 is inserted into the tool insertion through-hole 4 and the shank portion 8 is in contact with the flange portion 10 of the plug 1 as described above,
The length of the insertion blade 7 is set such that the distal end of the insertion blade 7 projects by a predetermined dimension.

The tip end of the insertion blade 7 is formed at a tapered cutting edge 9 having a predetermined inclination angle θ (which can be drilled in a rotating state) {preferably 40 ° to 60 °}. The blade edge 9 has a generally V-shaped or U-shaped shape with the wide portions 7a, 7a formed in an inclined shape.

The insert blade 7 is made of a material and hardness that is not easily deformed by easily piercing a board having a hardness of about gypsum. Is also preferred.

Next, a method of using the plug unit configured as described above will be described.

First, as shown in FIG. 1, the attachment 2 is inserted into the plug 1, the shank 8 is brought into contact with the flange 10 of the plug 1, and the insertion blade 7 is made to protrude from the tip of the plug 1. As shown in FIG. 3, the shank 8 of the attachment 2 is clamped to the chuck 13 of the electric drill 12.

Then, the tapered cutting edge 9 of the insertion blade 7 is brought into contact with the plug mounting position of the board 11 such as gypsum,
The electric drill 12 is lightly pressed against the board 11 by rotating 12 (in the direction in which the plug 1 is screwed by the spiral ridge 3).
(Or, the shank portion 8 may be gripped and rotated with a manual tool.)

Then, the tapered cutting edge 9 of the rotating insertion blade 7 makes a hole in the board 11, and at the same time, the insertion blade 7 integrally rotates the plug 1 through the tool insertion through-hole 4 to be sequentially drilled. The plug 1 is screwed into the board 11 along the prepared hole.

The electric drill 12 is rotated as it is until the flange 10 of the plug 1 sinks into the board 11.

Next, a self-tapping screw (not shown) is inserted into the cross-shaped hole formed by the tool insertion through hole 4 and the flat hole 6 (see FIG. 1) at the base end of the plug 1 by inserting the tip of the above-mentioned insertion blade 7. Rotate and screw in as a flathead screwdriver,
Suspension brackets and angle materials can be attached.

As described above, according to the plug unit of the present invention, the insertion blade 7 is used for the pilot hole drill and the screw driver for the plug 1 and the screw driver for the self-tapping screw (not shown). Can be shared. Accordingly, the processing of the prepared hole of the plug 1, the screwing operation of the plug 1, and the screwing operation of the self-tapping screw into the plug 1 can be performed continuously and easily, so that a large amount of plugs 1 can be attached. Demonstrate.

The present invention is not limited to the above-described embodiment, and the design can be freely changed without departing from the gist of the present invention. The tip of the insertion blade 7 shown in FIG. Is also good. (However, it has a shape that can also be used as a driver for the self-tapping screw.)

[0024]

[Effect of the Invention] The present invention is constructed as described above, and thus has the following remarkable effects.

Since the attachment 2 which can be used both as a drill hole for drilling and a screwdriver is provided, the only tool for plug installation is the electric drill body, and there is no need to prepare tools such as drill bits and screwdrivers. This is convenient because the mounting work can be immediately and continuously performed.

Since drilling and screwing work can be performed continuously with one attachment 2, the workability of mounting is extremely good and the mounting work is completed in a short time. Further, the subsequent screwing operation of the self-tapping screw to the plug 1 can also be performed quickly and continuously by using the insertion blade 7, so that the efficiency is further improved.

[Brief description of the drawings]

FIG. 1 is an enlarged sectional view showing an embodiment of the present invention.

FIG. 2 is a perspective view showing a state where a plug unit is separated.

FIG. 3 is an explanatory view of use of a plug unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Plug 3 Spiral ridge 4 Tool insertion through hole 7 Insertion blade 9 Tapered edge

Claims (1)

(57) [Scope of request for utility model registration] 1. A tool insertion through hole 4 made of plastic, having a spiral ridge 3 on its outer periphery, and having a single-character cross section.
And a strip-shaped insertion blade 7 that can be inserted into the tool insertion through-hole 4 of the plug 1.
In addition, the insertion blade 7 is set to a length protruding further to the distal end side than the distal end of the plug 1 in the inserted state, and the distal end is formed at the tapered blade edge 9. 9. A board plug unit, wherein 9 is substantially V-shaped or substantially U-shaped.