KR20160059723A - Joining structure for bolt - Google Patents

Abstract

The present invention relates to a bolt joining structure comprising: a worm wheel which is formed on the outer surface of a bolt head to be integrated or fitted and coupled to the bolt head; and a rotary shaft which has a screw-type worm engaged with the worm wheel, wherein the rotary shaft is fixed to a drill chuck of a an electric drill and allows a bolt to be tightened and untightened according to the forward or reverse rotation of the drill chuck. Therefore, the present invention enables the easy tightening and untightening of the bolt by the forward or reverse rotation of the electric drill regardless of a space by allowing the worm wheel formed in the bolt head and the rotary shaft having the screw-type worm engaged with the worm wheel to be fixed to the drill chuck of the electric chuck to be rotated.

Description

Joining structure for bolt

More particularly, the present invention relates to a bolt coupling structure, and more particularly, to a bolt coupling structure in which a rotary shaft provided with a wormhole formed on a head of a bolt and a worm having a worm engaged with the wormhole is fixed to a drill bit of an electric drill, So that the bolt can be easily tightened and loosened without being affected by the rotation of the bolt.

Generally, the bolts are limited in the torque value, which is the magnitude of the external force corresponding to each standard, for proper tightening. In order to observe this, it is necessary to use a separate device for measuring the torque value or a limit that can not exceed the allowable value Use the tightening tool fitted.

Particularly, in case of building a ship in a large shipyard, the hull is divided into blocks, and the finished hull blocks are assembled in order. In this case, the hull blocks produced are usually several tens of meters in height and width These hull blocks are fixed through bolts.

In addition, various kinds of scaffolds are temporarily installed in various places in the hull block to protect the safety of the operator and to facilitate various operations such as a scaffold. In the case of installing the scaffold rail, Hexagonal head bolts with hexagonal head are used.

However, although a spanner is used for fastening the bolt used for fixing the hull block or the scaffold, when the space for use of the spanner is narrow, the bolt can not be tightened and loosened smoothly.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide an electric drill, And it is an object of the present invention to provide a bolt coupling structure that allows the bolt to be tightened and unfastened by rotation without being limited by the space.

According to an aspect of the present invention, there is provided a bolt coupling structure including: a wormhole integrally formed on an outer surface of a bolt head or fitted to a bolt head; And a rotary shaft having a screw-type worm engaged with the wormhole, wherein the rotary shaft is fixed to a drill bit of the electric drill, and the bolt is tightened and loosened according to forward rotation or reverse rotation of the drill bit. do.

As described above, according to the present invention, the rotating shaft having the wormhole formed on the head of the bolt and the screw-shaped worm engaged with the wormhole is fixed to the drill bit of the electric drill and rotated so that the bolt is tightened and loosened by the forward rotation or reverse rotation of the electric drill. The present invention is a very useful invention which makes it possible to easily carry out the present invention without being limited to the above.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a reference view showing a bolt connecting structure according to the present invention;
Fig. 2 is an operating state diagram of the bolt coupling structure of the present invention. Fig.

The above and other objects, features, and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings.

The bolt connection structure according to the present invention comprises a wormhole 20 integrally formed on the outer surface of the bolt head 10 or fitted to the bolt head 10; The rotary shaft 30 is fixed to the drill bit A of the electric drill and is fixed to the forward rotation of the drill bit A. The rotary shaft 30 is provided with a worm 31, Or the bolt is tightened and loosened according to the reverse rotation.

The wormholes 20 are integrally formed on the outer surface of the bolt head 10 or are fitted to the bolt head 10.

The wormholes 20 are formed in a sawtooth shape so as to have a helical structure so as to engage with the threaded worm 31.

When the wormhole 20 is fitted to the bolt head 10, the inner surface of the wormhole 20 is formed to have the same size as the outer surface of the bolt head 10 or the wormhole 20 fitted to the bolt head 10 A locking protrusion 21 is formed at the upper end of the inner surface of the wormhole 20 so as not to come off.

The rotary shaft 30 is fixed to the drill bit A of the electric drill and has a structure of a conventional drill or a drill bit so as to be fixed to the drill bit A. [

A worm 31 is formed on the outer circumferential surface of the rotary shaft 30 to engage with the wormhole 20.

The operation state of the bolt coupling structure of the present invention having the above-described configuration will be described below.

The drill bit A of the electric drill and the rotary shaft 30 fixed to the drill bit A are sequentially rotated when the electric drill is rotated forward or backward, The wormhole 20 engaged with the threaded worm 31 rotates when the threaded worm 31 is rotated by the rotation of the wormhole 30, The bolt is tightened and loosened.

If only a space for rotation of the rotary shaft 30, that is, a space for rotation of the rotary shaft 30 is provided, bolts are tightened and loosened so that the bolts are freely engaged regardless of the shape of the assembly and the assembly space.

Although the present invention has been described with reference to the exemplary embodiments, it is to be understood that the present invention is not limited to the disclosed exemplary embodiments, and that various changes and modifications will be apparent to those skilled in the art. Various modifications and variations are possible within the scope of the claims.

Description of the Related Art [0002]
10: Bolt head 20: Wormhole
30: rotating shaft 31: threaded worm
A: The drill

Claims (1)

A wormhole 20 integrally formed on the outer surface of the bolt head 10 or fitted to the bolt head 10; The rotary shaft 30 is fixed to the drill bit A of the electric drill and is fixed to the forward rotation of the drill bit A. The rotary shaft 30 is provided with a worm 31, Or the bolt is tightened and loosened according to the reverse rotation.

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