KR101824931B1 - Instrument for bolt rotation prevention - Google Patents

Abstract

The present invention relates to a mechanism for preventing a bolt from rotating in a state where a bolt and a nut are fastened. More particularly, the present invention relates to a body having a mounting groove formed at one portion thereof, Wherein when the body is inserted between the insertion hole and the head of the bolt while the bolt is inserted into the insertion hole formed by the counterboring, the magnetic body is attached to at least one of the inner surfaces of the insertion hole to fix the body And a bolt anti-rotation mechanism for preventing the bolt from rotating due to the head of the bolt being hooked on the body. This makes it possible to tighten loose bolts and nuts without separating the parts or units (devices), and to apply the present invention to insertion holes formed by conventional counter boring, which is excellent in versatility.

Description

[0001] The present invention relates to an instrument for bolt rotation prevention,

The present invention relates to a mechanism for preventing a bolt from rotating in a state where a bolt and a nut are fastened.

Generally, bolts and nuts are used to fasten assembly parts. To prevent the bolt head from protruding to the outside during fastening, counterboring is performed on one side of the assembly part. Bolts are then inserted into the insertion holes formed by counterboring Insert and tighten.

On the other hand, as shown in Fig. 1, there arises a case where the units U fastened with the assembly parts P have to be brought into close contact with each other or to be combined with each other. At this time, if the bolt head (BH) is protruded, the units (U) can not be combined or can not be brought into close contact with each other. Therefore, the bolts B can be inserted into the insertion holes 2 after the insertion holes 2 are formed in the same manner as described above so that the bolt head BH does not protrude to the outside, .

However, when bolts (B) and nuts (N) are loose, bolts (B) or nuts (N) should be tightened with bolts (B) or nuts (N) fixed.

However, there arises a problem that the bolts B and the nuts N can not be tightened in a state in which the parts P or the units U are in close contact or in contact with each other.

Therefore, in order to tighten the bolts B and the nuts N, it is troublesome to disassemble the parts P or the units U.

Even if the bolts B and the nuts N are tightened after the disassembly, the parts P or the units U must be joined again, so that the overall inspection time becomes very slow and the maintenance cost increases accordingly.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the conventional art, and it is an object of the present invention to provide a bolt and a bolt that can be loosened without separating parts or units The purpose is to provide a mechanism.

To achieve these and other advantages and in accordance with the purpose of the present invention, as embodied and broadly described herein, there is provided a magnetic head comprising: a body having a mounting groove formed in a part thereof; and a magnetic body mounted on the mounting groove, When the body is sandwiched between the insertion hole and the head of the bolt, the magnetic body is attached to at least one of the inner surfaces of the insertion hole to fix the body, and a bolt head is caught by the body to prevent the bolt from rotating. Rotation preventing mechanism.

In addition,

And may be formed in a shape corresponding to the mounting groove.

In addition,

And one side thereof may be formed in the shape of an arc so as to be in close contact with the inner peripheral surface of the insertion hole.

In addition,

And the other surface may be formed in a shape corresponding to at least one of the surfaces of the bolt head and at least one of the edges of the bolt head.

In addition,

The inner circumferential surface of the insertion hole and the plane of the insertion hole to which the bolt head is closely attached.

In addition,

The inner surface of the mounting groove may be formed to be out of the concentric circle of the insertion hole to prevent the magnetic body from separating from the body when the body rotates.

According to the present invention, loosened bolts and nuts can be quickly tightened.

In addition, it is easy to install and excellent in versatility.

In addition, it is possible to work with a minimum of manpower, shorten inspection time, and reduce maintenance cost.

In addition, it is possible to prevent the magnetic material from being separated.

Further, the two surfaces of the magnetic body can be attached to two surfaces of the insertion hole, so that the present invention can be more firmly fixed.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side sectional view schematically showing a conventional bolt and nut fastening structure; FIG.
2 is an exploded perspective view showing a front and a rear of a bolt anti-rotation mechanism according to an embodiment of the present invention;
3 is a plan sectional view showing a state where a bolt anti-rotation mechanism according to an embodiment of the present invention is applied.
4 is an exploded perspective view showing another embodiment of the body in the bolt anti-rotation mechanism according to the embodiment of the present invention.
Fig. 5 is a plan sectional view showing a state in which Fig. 4 is applied. Fig.
6 and 7 are exploded perspective views showing another embodiment of the magnetic body in the bolt anti-rotation mechanism according to the embodiment of the present invention.
FIG. 8 is a plan sectional view showing a state in which FIG. 7 is applied. FIG.

The preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings, in which the technical parts already known will be omitted or compressed for the sake of brevity.

1 to 8, the bolt anti-rotation mechanism 1 according to the embodiment of the present invention includes the bodies 11 and 11 'and the magnetic bodies 12, 12' and 12 ''.

The body 11 is formed of a known or known base metal, metal, reinforced plastic or the like, and has a circular plate shape with a substantially flat shape of the plane 22. The body 11 is formed in a circular arc shape, 11 are formed in a flat shape and an arc-shaped mounting groove 111 is formed on one side of the body 11 so as to insert the magnetic body 12 therein.

In addition, the body 11 is rounded at both ends of the body 11 in order to easily mount the body 11 in the insertion hole 2, or formed in a predetermined truncated form.

At least one removable recess 112 is formed in the body 11 so that the body 11 can be detached from the opposite surface of the body 11. A description thereof will be described later.

The body 11 is inserted into a space remaining between the bolt head BH and the insertion hole 2 in a state where the bolt B is inserted into the insertion hole 2 formed by counterboring, And faces the peripheral surface 21 of the hole 2 so that the opposite surface of the body 11 faces the side surface of the bolt head BH.

The magnetic body 12 is made of a known or known permanent magnet and is formed into a substantially arc-shaped band in the shape of a flat surface 22 and is fitted in the mounting groove 111 of the body 11.

At this time, the magnetic body 12 is forcedly fitted to the mounting groove 111 of the body 11 or fixed by an adhesive.

Thus, when the body 11 is inserted between the insertion hole 2 and the bolt head BH in a state where the body 11 and the magnetic body 12 are engaged with each other, (11) is fixed to the insertion hole (2) by sticking to the insertion hole (21).

That is, when the body 11 is fixed to the circumferential surface 21 of the insertion hole 2 by the magnetic body 12 and the bolt head BH is engaged with the opposite surface of the body 11, Can be prevented.

For example, when the body 11 is fixed to the circumferential surface 21 of the insertion hole 2 by the magnetic body 12 and an external shock or vibration is applied or when the bolt B is forcibly rotated , One edge of the bolt head BH is caught on the opposite side of the body 11, so that the bolt head BH can be prevented from rotating.

In order to detach the body 11 from the insertion hole 2, a bolt B is detached from the insertion hole 2, and then a releasing mechanism (not shown) is inserted into the detachable groove 112 of the body 11 The bolt anti-rotation mechanism 1 can be easily separated from the insertion hole 2 by pulling the release mechanism.

On the other hand, as shown in Figs. 4 and 5, the body 11 'may be formed such that the opposite surface corresponds to the edge around the bolt head BH. That is, the opposite surface of the body 11 'may be concave so that at least one edge around the bolt head BH is fitted.

Thereby, one edge and one side of the periphery of the bolt head BH are caught by the body 11 'or two corners around the bolt head BH are caught by the body 11' Can be prevented.

The above-mentioned detachable groove 112 may also be formed in the body 11 'shown in Figs. 4 and 5.

6, the inner surface 111a of the mounting groove 111 'of the body 11 can be formed as a flat surface 22, and the magnetic body 12' can be mounted on the mounting surface of the body 11 May be formed in a shape corresponding to the groove 111 '.

For example, if the magnetic body and the body are not firmly fixed to each other due to poor coupling, the bolt and the body may rotate together when the bolt rotates. At this time, the magnetic body is fixed to the circumferential surface of the insertion hole, The body and the magnetic body can be separated from each other.

This is because the inner diameter and outer diameter of the magnetic body 12 and the inner surface of the mounting groove 111 are concentric with the insertion hole 2, as shown in Figs. 2 to 5.

However, if the inner surface 111a of the mounting groove 111 'and the inner diameter of the magnetic body 12' are out of the center of the insertion hole 2 or the inner surface 111a of the mounting groove 111 'is flat and the magnetic body 12 ') are formed in a corresponding shape, it is possible to prevent the body 11 and the magnetic body 12' from being separated from each other.

On the other hand, as shown in Figs. 7 and 8, the magnetic substance 12 "may be formed by further extending the bottom surface of the magnetic substance 12 ".

That is, when the magnetic substance 12 "is mounted on the mounting groove 111" of the body 11, the bottom surface of the magnetic substance 12 "and the bottom surface of the body 11 are on the same plane, The bottom surface can be protruded from the bottom surface of the body 11 by a predetermined amount.

Accordingly, when the body 11 equipped with the magnetic body 12 "is inserted into the insertion hole 2, the rounded surface of the magnetic body 12" sticks closely to the circumferential surface 21 of the insertion hole 2, The bottom surface of the insertion hole 12 "is closely adhered to the plane 22 of the insertion hole 2 so as to firmly fix the body 11 to the insertion hole 2.

Therefore, by fixing the body 11 more firmly to the insertion hole 2, the rotation of the bolt B can be further prevented.

Hereinafter, the use state of the bolt anti-rotation mechanism 1 according to the embodiment of the present invention will be described with reference to the accompanying drawings.

The bolts B are inserted into the insertion holes 2 and the nuts N are fastened to the bolts B. At least one of the bolts B and the insertion holes 2 is inserted between the bolts B and the present invention.

At this time, bolts (B) and nuts (N) can be loosened if an external shock or vibration is applied.

When the fastening of the bolt (B) and the nut (N) becomes loose, tighten the nut (N) with a tool such as a spanner (not shown).

Since the bolt head BH is hooked on the body 11 in the process of tightening the nut N, the bolt B and the nut N can be securely fastened even if only the nut N is tightened.

However, if the present invention is omitted, there is a problem that the bolts B are rotated together in the process of tightening the nuts N, so that the nuts N and the bolts B can not be tightly fastened.

To solve this problem, the nut (N) must be tightened while the bolt (B) is fixed.

In order to tighten the specific bolt B and the nut N in an apparatus constituted by the component P or the unit U, the component P and the component P, the component P and the unit U or the unit N, (U) and the unit (U) need to be disassembled.

Particularly, the larger the part P or the unit U, the more difficult it is to disassemble the part P or the unit U with only the attractive force.

The component P or the unit U must be disassembled in order to tighten the loosened bolt B and the nut N. Therefore, it is troublesome to disassemble the bolt B and the nut N for a long time.

At the end of the disassembly, the nut (N) must be tightened with the bolt (B) fixed, so a minimum of two manpower is required.

That is, one person must fasten the bolt head (BH) or the nut (N) while the other person must tighten the bolt (B) or the nut (N).

It takes a long time to reassemble the component P or the unit U again after the bolts B and the nuts N are tightly fastened to each other. And the maintenance cost is also increased.

However, if the present invention is previously mounted on the insertion hole 2, since the present invention firmly fixes the bolt B, the bolt B and the nut N can be rapidly and firmly fastened even if only the nut N is tightened Can be concluded.

Therefore, the present invention can fasten bolts and nuts quickly and securely with a minimum of manpower in an environment where it is difficult to disassemble parts or units, and further, can save inspection time and maintenance cost. In addition, since it can be applied to an insertion hole formed in an existing device or apparatus, it is excellent in versatility and has a long lifetime because it uses a permanent magnet and thus has excellent detachability.

In describing the present invention described above, the same reference numerals are used for the same configurations even if the embodiments are different, and the description thereof may be omitted if necessary.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. Shall not be construed as being understood. Therefore, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. The present invention is not limited thereto.

One; Bolt anti-rotation mechanism
11, 11 '; Body
111, 111 ', 111 "
111a; Inner side
112; Detachable groove
12, 12 ', 12 "
2; Insertion hole
21; Circumference surface
22; plane
B; volt
BH; Bolt head
N; nut
P; part
U; unit

Claims (5)

A body having a mounting groove formed at one portion thereof; And
And a magnetic body mounted on the mounting groove and having a magnetic property,
When the body is inserted between the insertion hole and the head of the bolt in a state where the bolt is inserted into the insertion hole formed by counterboring, the magnetic body is attached to at least one of the inner surfaces of the insertion hole to fix the body, The bolt head is caught by the body to prevent the bolt from rotating,
Wherein the body is formed in a circular plate shape in which the plane of the bolt head is cut in a plane shape and is formed in an arc shape so that one surface thereof can be closely attached to the inner circumferential surface of the insertion hole, And at least one of the corners of the periphery is formed to have a shape corresponding thereto,
And a detachable groove is formed on the other surface of the body so that the body can be detached from the insertion hole.
Bolt antirotation mechanism.
delete delete The method according to claim 1,
The magnetic body may include:
The inner circumferential surface of the insertion hole and the plane of the insertion hole to which the bolt head is closely attached.
Bolt antirotation mechanism.
The method according to claim 1,
The body,
And an inner surface of the mounting groove is formed to be out of a concentric circle of the insertion hole to prevent the magnetic body from being detached from the body when the body rotates.
Bolt antirotation mechanism.

Images