JPH1035190A - Screw thumbtack - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simply remove a generally used metal thumbtack with fingers without using a tool. SOLUTION: A projection 4 like a screw or a part in accordance with it is provided on the needle part 3 of a thumbtack and arbitrary both ends of a top part 1 are bent in the upward direction to make it like a channel of a screw driver (a driver).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thumbtack of a general metal thumbtack which is provided with about one to three threads or a protrusion corresponding thereto, and the thumbtack is rotated with a fingertip to be screwed in. Both ends of the top plane are bent upward.

[0002]

2. Description of the Related Art A conventional technique requires a considerable force when pushing a thumbtack with a fingertip, and is almost impossible with a fingertip when removing the thumbtack, and requires some equipment.

[0003]

In the prior art, the thumbtack is pushed in as much as possible and can hardly be removed with a fingertip when removing it.

Accordingly, the present invention provides a method of attaching a thumbtack by lightly rotating a screw portion with a fingertip to stop firmly with a small force, and removing the thumbtack in reverse to remove the thumbtack without using any equipment. The solution was focused on being lightly removed.

[0005]

In order to achieve the above-mentioned object, in the screw thumbtack according to the present invention, one end of the needle is attached to the base of the needle.
Approximately three threads or protrusions having the same function were provided.

The opposite ends of the screw thumbtack are bent upward in a circular shape at the top.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS When the screw thumbtack constructed as described above is pushed into an object, it stops at the protrusion of the screw thread. Then, the thumb is screwed by putting a finger on the groove formed by bending the opposite ends of the top part in the upward direction and turning it (turning it like a screwdriver), so that the thumbtack is securely fastened. When the thumbtack is removed, the screw can be turned in the opposite direction, so that it can be easily removed with the fingertip without using any equipment.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment will be described with reference to FIG.
FIG. 4 is a diagram in which one to three screw threads are provided at the base of the needle part in a state where both ends of the top part of the screw thumbtack are bent upward.

Referring to FIG. 2, the screw thumbtack top portion has a double structure, so that the upper half may be bent upward and the lower half may be horizontal. If the needle is too thin to be threaded, a projection is attached to it to give a screw effect.

In FIG. 3, (a), (b), (c), and (d)
FIG. 3 is a view seen from above and below the thumbtack. (A) (FIG. 3 (a)): A diagram in which arbitrary both ends viewed from the upper part of "(FIG. 1)" are bent upward. (A) (FIG. 3 (b)): In the view seen from the lower part of "(FIG. 1)", a circle of a thread protrusion is visible at the base of the needle. (C) (FIG. 3 (c)): FIG. 3 (b) is a view in which the upper portion of the double top portion viewed from the upper portion of "(FIG. 2)" is bent upward, and the lower top portion is seen as a plane. (D) (FIG. 3 (d)): It is a lower view of the double top viewed from below "(FIG. 2)".

[0011]

Since the present invention is configured as described above, it exhibits the following effects.

When the top of the thumbtack is lightly pressed with a fingertip, the needle stops at the screw portion. Therefore, when the bent portion of the top is rotated like a screwdriver (driver) with a fingertip, it is tighter than the thumbtack normally pushed in. Tighten. And by turning it in the opposite direction, it produces an effect that can be easily removed with just your fingertips.

The thumbtack is tightened with a screw, and the hole after the thumbtack is removed can be used in any way, and it is not unsightly on a wall, a side plate, a door, etc. without making many holes.

Since the thread portion of the thumbtack serves as a stopper, it can be easily stopped on paper and paper, paper and cloth, cloth and cloth, and the like.

[Brief description of the drawings]

FIG. 1 is a side view of a screw thumbtack, showing that a thread is provided on a needle part.

FIG. 2 is a view in which a double part of a top part of a screw thumbtack is divided into upper and lower parts, an upper part is bent upward, a lower part is kept flat, and a needle part is provided with dotted projections instead of a screw.

FIG. 3 shows a screw thumbtack on upper (a) and (c) and lower (b)
It is the figure seen from (d).

[Explanation of symbols] Top of screw thumbtack Thread of screw thumbtack Needle of screw thumbtack Projection instead of screw Lower part of double top

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[Procedure amendment]

[Submission date] February 7, 1997

[Procedure amendment 1]

[Document name to be amended] Drawing

[Correction target item name] Figure 3

[Correction method] Change

[Correction contents]

FIG. 3

Claims (2)

[Claims] 1. A screw thumbtack having approximately one to three threads or an equivalent (a protrusion or the like) provided above a needle part of a metal thumbtack. 2. A screw thumbtack obtained by bending a part of both ends of a circular surface of a top portion of a metal thumbtack upward.