KR102004857B1 - Loosening prevention nut - Google Patents

Abstract

The present invention relates to a loosening prevention nut and, more specifically, to a loosening prevention nut capable of preventing the loosening of a nut by enabling the nut to be turned only in a tightening direction when combined with a bolt; and making the nut easily separated by enabling the nut to be turned in a loosening direction if necessary. In particular, a locking ring is formed inside the body of a nut to prevent the nut from being turned in a loosening direction when combined, and the nut can be turned in a loosening direction by sufficiently removing pressing support force applied to the male thread of a bolt through simple manipulation if necessary, so a worker can easily and quickly separate the nut. Moreover, since a C-shaped locking ring is used to limit rotation in a loosening direction, the structure is simpler than a nut using an elastic spring, and convenience in use and manufacture can be considerably improved. Therefore, reliability and competitiveness can be improved in bolt and nut combination structure fields, loosening prevention nut fields, apparatus, facility and system fields, and similar or related fields.

Description

{Loosening prevention nut}

The present invention relates to a nut for preventing loosening, and more particularly, to a nut for fastening with a bolt, it is possible to rotate only in a fastening direction during fastening to prevent loosening of the nut, So that the nut can be easily separated.

In particular, the present invention provides a ring-shaped locking ring in the body of the nut to prevent rotation of the nut in the unlocking direction during tightening, and sufficiently removes the pressing force applied to the male thread of the bolt Thereby enabling the worker to easily and quickly remove the nut.

In general, since the fastening method using bolts and nuts can be easily combined even by a simple operation, they have been widely used in various fields, but they have been disadvantageously solved by external vibration.

For example, when bolts and nuts are used for connecting railway vehicles, facilities, etc., in the railroad field, the bolts and nuts are loosened by vibrations or shocks caused by the running of the railway vehicle, As a result, structural stability may occur not only in the equipment and facilities, but also in the railway vehicle itself.

Furthermore, the same or similar problems may occur in various facilities as well as various facilities and systems including a power generation facility for operating a turbine and the like, an elevator installed in the building, and the like.

Recently, a nut having a loosening preventing function has been developed in order to solve the problem of a fastening method using a bolt and a nut.

For example, Korean Patent Registration No. 10-1163487, "Seperuck Nut", and Korean Patent Registration No. 10-0902061, "Power Clutch Nut", which are described in the prior art, are known.

Conventional loosening preventing nuts including these prior arts have a common feature that the coil spring is positioned between the male thread of the bolt and the female thread of the nut to prevent loosening of the nut.

When the nut is loosened, the coil spring is opened while moving the position of the end portion of a part (the lower most part) of the coil spring, so that the nut is easily loosened.

However, in the case of the coil spring, due to its shape characteristic, it is general that the shape of one of the two end portions is deformed while the other shape is maintained. Particularly, as in the prior art, In the narrow space between the female threads of the female screw.

For example, when one of the coil springs is deformed by a constant force in an open space, assuming that only 1/3 of the coil spring is deformed, a narrow space such as a male thread of a bolt and a female thread of a nut The same force can be applied to the coil spring constituting the coil spring.

In other words, the conventional anti-loosening nuts using the coil spring can exhibit a sufficient effect when tightened so as not to loosen. However, when the loose nuts are loosened if necessary, deformation occurs only on the lower side of the coil spring The upper side is maintained in the previous state.

As a result, although the nut is deformed to be loosened at the lower portion of the coil spring, the fastened state is maintained by the undeformed upper side, and consequently, the nut is difficult to unravel.

Further, in the case of a coil spring structure such as the prior art, it takes a considerable amount of force in the process of unlocking the nut, and there is no guarantee that the fastening state of the upper side will be released even if such force is applied, The spring or the nut itself may be damaged or damaged.

Korean Registered Patent No. 10-1163487 " Sealer Rock Nut " Korean Patent Registration No. 10-0902061 'Power clutch nut'

In order to solve the above-mentioned problems, the present invention provides a nut fastened to a bolt, which can be rotated only in a fastening direction during fastening to prevent loosening of the nut, So that the nut can be easily separated from the nut.

In particular, the present invention provides a ring-shaped locking ring in the body of the nut to prevent rotation of the nut in the unlocking direction during tightening, and sufficiently removes the pressing force applied to the male thread of the bolt So that the operator can easily and quickly remove the nut.

In addition, the present invention can easily remove the pressing force applied to the male thread of the bolt by fitting the wrench-type nut loosening tool into the nut body, and the operator can more easily remove the nut by using the nut loosening tool And an object of the present invention is to provide an anti-loosening nut which can be made to be detachable.

According to an aspect of the present invention, there is provided an anti-loose nut comprising: a body having a female thread formed therein to be coupled to a bolt; And a locking ring fitted to the inside of the body and pressing and supporting a male thread of the bolt when the body coupled with the bolt is rotated in the releasing direction.

In addition, the locking ring is formed of an elastic material having a shape corresponding to the 'C' ring, and the rotation direction position of the end portion on the tightening direction side of the two end portions on the basis of the broken point is maintained constant at a specific position of the body .

In addition, when the body rotates in the tightening direction, the end of the locking ring on the tightening direction side is pressed by the body in the tightening direction, and the pressing support force against the male thread of the bolt can be released as the locking ring is opened.

In addition, when the body rotates in the releasing direction, the longitudinal end of the locking ring on the tightening direction side is pressed by the body in the releasing direction, and the locking ring is tightened to pressably support the male thread of the bolt.

The lock ring is formed of an elastic material having a shape corresponding to the 'C' ring, and a lock piece is formed at a longitudinal direction side end portion of both end portions on the basis of the broken point, A fixed support groove may be formed in which the lock piece is fitted so that the direction movement is restricted.

The locking ring is formed with releasing pieces on the releasing direction side end portions of both end portions on the basis of the point where the locking ring is broken, and the body is provided with a guide groove in which the releasing piece is inserted and engaged so that the releasing piece can be moved in the rotating direction .

The locking piece may be formed such that a longitudinal end thereof is positioned inside the outer side surface of the body, and the releasing piece is formed such that a longitudinal end thereof is positioned outside the outer side surface of the body.

Further, when the end portion of the release piece protruding from the outer surface of the body is pressed in the release direction, the pressing support force against the male thread of the bolt can be released as the locking ring is opened.

When the nut loosening hole having the nut coupling hole corresponding to the shape of the body is inserted into the body, the releasing piece protruding from the outer surface of the body is pressed and moved in the releasing direction, The pressure holding force against the male thread can be released.

In addition, the releasing piece may be formed with an inclined surface such that the releasing piece moves in the releasing direction in the process of coupling the nut releasing mechanism to the body.

According to the present invention, in constructing the nut to be fastened to the bolt, only the rotation in the tightening direction can be performed at the time of fastening, thereby preventing the nut from being loosened and rotating in the loosening direction when necessary There is an advantage that the nut can be easily separated.

In particular, the present invention provides a ring-shaped locking ring in the body of the nut to prevent rotation of the nut in the unlocking direction during tightening, and sufficiently removes the pressing force applied to the male thread of the bolt So that the worker can easily and quickly separate the nut.

Further, since the present invention uses a locking ring of a 'C' ring shape for restricting the rotation in the release direction, the structure is simple as compared with a nut using an elastic spring, and the convenience of manufacture and use can be greatly improved have.

In addition, the present invention can easily remove the pressing force applied to the male threads of the bolt by fitting the nut loosely formed in the cylindrical shape of the wrench into the body of the nut, and the operator can easily remove the nut There is an advantage that it can be separated more easily.

As a result, the present invention has an advantage that the nut can be easily separated even when the nut is loosened with a relatively small force as compared with the coil spring structure.

Therefore, reliability and competitiveness can be improved in the field of fastening structure of bolts and nuts, in particular, in the fields of nuts for preventing loosening, and devices, facilities, systems, and facilities using the same and similar or related fields.

1 is a perspective view showing an embodiment of an unlocking nut according to the present invention.
Figs. 2 and 3 are views for explaining the body shown in Fig. 1. Fig.
FIG. 4 is a view for explaining a locking ring shown in FIG. 1; FIG.
5 to 7 are views for explaining the function of the locking ring shown in Fig.
8 is a perspective view showing one embodiment of a nut loosening used to release Fig.
9 is an exploded perspective view showing another embodiment of Fig.

An example of the release preventing nut according to the present invention can be variously applied, and the most preferred embodiment will be described below with reference to the accompanying drawings.

1 is a perspective view showing an embodiment of an unlocking nut according to the present invention.

Referring to FIG. 1, an unlocking nut A includes a body 100 and a locking ring 200.

The body 100 is a basic structure that forms an outer shape with the function of an anti-loosening nut A, and a female thread is formed in the body so as to be coupled to the bolt.

When the body 100 coupled with the bolt is rotated in the unwinding direction, the locking ring 200 presses and supports the male thread of the bolt, so that the body 100 moves in the releasing direction Rotation can be suppressed.

At this time, as shown in FIG. 4, the locking ring 200 may be formed of a ring-shaped, elastic material, such as a 'C' shape, partially open and broken. The length of the open part in the ring form does not exceed half the total length of the ring.

The locking ring 200 can be maintained at a specific position of the body 100 in the rotational direction position of the end portion on the tightening direction side of the two end portions with respect to the point where the locking ring 200 is broken.

In other words, the tightening direction side end portion of the locking ring 200 can be supported at a specific position of the body 100.

When the body 100 rotates in the tightening direction with one end of the locking ring 200 being supported by the body 100, the end of the locking ring 200 on the side of the tightening direction is supported by the body 100 So that the locking ring 200 is opened and the pressing support force against the male thread of the bolt can be released.

On the other hand, when the body 100 is rotated in the releasing direction, the longitudinal end portion of the locking ring 200 on the tightening direction side is pressed in the releasing direction by the body 100, and the locking ring 200 is tightened, It can be pressed and supported.

The function of the locking ring 200 will be described in more detail below. Hereinafter, each configuration of the anti-loose nut A shown in FIG. 1 will be described in more detail.

Figs. 2 and 3 are views for explaining the body shown in Fig. 1. Fig.

Referring to FIG. 2, a fixed support groove 101 may be formed on an upper portion of the body 100 to be connected to a bolt coupling hole (not shown in FIG.

A guide groove 102 having a predetermined width may be formed in a lower portion adjacent to the fixed support groove 101 of the body 100 so that a through hole 103 spatially connected to the bolt coupling hole is formed.

In addition, a fitting groove 104 may be formed in an upper portion of the central through hole of the body 100, to which a locking ring 200 to be described later is fitted.

The spatial connection relation and the positional relationship of each of these configurations can be more clearly seen with reference to FIG.

3 (a), the fixed support groove 101 may be directly spatially connected to the bolt-fitting hole, and the guide groove 102 may be formed through the through-hole 103 and the bolt- .

3 (b), the fixed support groove 101 may be opened to the upper direction, and the guide groove 102 may be formed in the lower portion thereof in the width direction.

The through hole 130 formed in the guide groove 102 and connected to the bolt coupling hole is formed to have a width larger than that of the fixed support groove 101. The reason and function of the same will be described in more detail below .

FIG. 4 is a view for explaining a locking ring shown in FIG. 1; FIG.

Referring to FIG. 4, the locking ring 200 is made of an elastic material, and may be formed in a ring shape such that a portion thereof is opened like a 'C' shape.

The lock ring 210 may be formed at a terminating end of the locking ring 200 in the tightening direction (generally, clockwise) of the both side end portions with reference to the broken point (the lower left direction in FIG. 4).

The releasing piece 220 may be formed at the end of the locking ring 200 in the releasing direction (generally, counterclockwise direction) of the both side end portions on the basis of the broken point described above, And an inclined surface 221 may be formed at the end portion.

1, the end portion of the locking piece 210 is located on the inner side of the outer side surface of the body 100, as shown in FIG. 1, And the releasing piece 220 may protrude so that its longitudinal end is located on the outer side of the outer surface of the body 100.

Hereinafter, the function of the locking ring 200 will be described in more detail.

5 to 7 are views for explaining the function of the locking ring shown in Fig.

First, as described above, the lock piece 210 may be formed on the tightening direction side in the clockwise direction with respect to the reference line with respect to the broken portion of the locking ring 200 as a reference, and the lock piece 210 may be formed in the counter- 220 may be formed.

1, the lock piece 210 may be coupled to the fixed support groove 101 of the body 100 such that the release piece 220 passes through the through hole 103 And may be coupled with a slight movement in the rotational direction while being guided by the guide groove 120.

5, when the locking ring 200 is coupled to the body 100 and the body 100 is coupled to the bolt and rotated in the tightening direction (clockwise direction) The locking ring 200 is opened while being supported in the groove 101 and rotating in the tightening direction (box-shaped arrow).

When the locking ring 200 is opened as described above, the body 100 can be smoothly engaged with the bolt while minimizing the bearing force with respect to the bolt.

As shown in FIG. 6, when the body 100 is coupled to the bolt or completely screwed, when the body 100 is rotated in a direction in which the body 100 is loosened, the locking piece 210 supported by the fixed support groove 101 The lock ring 200 is tightened while moving in the release direction (counterclockwise direction) (box arrow).

When the locking ring 200 is tightened, the outer surface of the bolt (male thread) is pressed and supported, so that the movement of the locking ring 200 in the releasing direction can be restricted, The body 100 fixed to the locking piece 210 can also be restrained from moving in the releasing direction.

Therefore, the body 100 can be engaged with the bolt in a state in which the movement in the releasing direction is originally sealed, and can stably maintain the fully tightened state.

When the body 100 is to be separated from the bolt if necessary, the release piece 220 protruding from the outer surface of the body 100 as shown in FIG. 1 is pressed in the release direction as shown in FIG. 7, The locking ring 200 is opened so that the pressing support force against the male thread of the bolt is released (box arrow), so that the body 100 can be easily separated.

On the other hand, it may be difficult to rotate the body 100 in the unlocking direction in a state where the user releases the unlocking piece 220 protruding from the outer side of the body 100 by hand.

Hereinafter, a method of easily separating the body 100 from the bolt will be described.

8 is a perspective view showing one embodiment of a nut loosening used to release Fig.

Referring to FIG. 8, the unlocking nut A of the present invention shown in FIG. 1 can be easily released from the bolt by the nut releasing tool 300.

A nut coupling hole 301 may be formed at a central portion of the nut coupling hole 300 and a nut coupling hole 301 may be formed to correspond to a shape of the body 100.

1, the release piece 220 protruding from the outer surface of the body 100 is inserted into the inner surface of the nut coupling hole 301, The locking ring 200 is opened while moving in the releasing direction as shown in Fig. 7, so that the pressure holding force against the male thread of the bolt can be released.

In this state, when the operator rotates the nut releasing mechanism 300 in the releasing direction, the body 100 can be easily separated from the bolt while being rotated in the releasing direction according to the rotation of the nut releasing mechanism 300.

At this time, the end portion of the release piece 220 may be formed as an inclined surface 221 as described above. In the process of coupling the nut release port 300 to the body 100, as shown in FIG. 7, The release piece 220 can be moved in the release direction.

Meanwhile, since the release preventing nut A described above has a structure in which the release piece 220 is protruded to the outside of the body 100, the release piece 220 can be operated due to an external influence or an operator's mistake during use , Which may result in unwinding and disengagement of the nut (A).

Hereinafter, a description will be given of a loosening preventing nut A in which the loosening function is originally blocked so as not to be detached after being joined.

9 is an exploded perspective view showing another embodiment of Fig.

9, the loosening preventing nut A of the present invention may include a body 100 having a fixed support groove 101 and a locking ring 200 having a locking piece 210 formed therein.

As described above, the anti-loosening nut A having the locking ring 200 formed of the locking piece 210 formed only on the body 100 is not rotatable in the loosening direction as described above. May not be detached from the bolt until it is crushed.

As described above, since the unlocking-preventing nut A and the unlocking-preventing nut A, which can be separated after being fastened as shown in Fig. 1, can be selected according to the purpose of use and those skilled in the art, The use place is not limited to a specific one.

In the above, the loosening preventing nut according to the present invention has been described. It will be understood by those skilled in the art that the technical features of the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof.

It is to be understood, therefore, that the embodiments described above are in all respects illustrative and not restrictive.

A: Loosening prevention nut
100: body 101: fixed support groove
102: guide groove 103: through hole
104:
200: Locking ring
210:
220: Release piece 221: Slope surface
300: nut loosening hole 301: nut coupling hole

Claims (10)

A body having a female thread formed therein so as to be coupled to the bolt; And
And a locking ring fitted to the inside of the body and pressingly supporting a male thread of the bolt when the body coupled with the bolt rotates in a releasing direction,
Wherein the locking ring comprises:
And a rotation direction position of the clamping direction side end portion of the two side end portions is constantly maintained at a specific position of the body on the basis of the broken point,
When the body rotates in the tightening direction,
The end of the locking ring on the tightening direction side is pressed by the body in the tightening direction and the pressing ring is released to release the pressing support force against the male thread of the bolt,
When the body rotates in the unwinding direction,
Wherein a longitudinal end portion of the locking ring on the tightening direction side is pressed by the body in a releasing direction and the locking ring is tightened to pressably support a male thread of the bolt,
Wherein the locking ring comprises:
A lock piece is formed at the end of the tightening direction side of the two end portions on the basis of the broken point,
The body,
A locking support groove is formed in which the locking piece is fitted so that the movement of the locking piece in the rotation direction is restricted,
Wherein the locking ring comprises:
Releasing pieces are formed at the end portions on the unwinding direction side of the two end portions on the basis of the broken point,
The body,
A guide groove is formed in which the release piece is fitted so as to be movable in the rotational direction of the release piece
Wherein the guide groove includes a through hole connected to the bolt coupling hole, the through hole having a width larger than that of the fixed support groove,
The end portion of the release piece is formed with an inclined surface, and is formed longer than the lock piece,
Wherein,
The end portion of which is formed so as to be located on the inner side of the outer surface of the body,
The releasing piece
The end portion of which is protruded outwardly from the outer surface of the body,
When the body is rotated in the releasing direction in the process of joining the bolts or in the fully tightened state, the locking piece supported in the fixed holding groove moves in the releasing direction, and the locking ring is tightened, Direction is suppressed,
When the end portion of the release piece protruded from the outer surface of the body is pressed in the release direction,
The release piece is slightly moved in the release direction while being guided by the guide groove through the through hole,
As the locking ring is opened, the pressure holding force against the male thread of the bolt is released,
When the nut loosening hole having the nut coupling hole is inserted into the body to insert the body, the releasing piece protruding from the outer surface of the body is pressed to move the releasing piece in the releasing direction and the locking ring is opened, The pressure holding force against the male thread is released,
The releasing piece
And an inclined surface is formed on the body to move the releasing piece in the releasing direction in the process of coupling the nut releasing mechanism to the body.
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