KR20110016177A

KR20110016177A - Clip for preventing nut from loosing

Info

Publication number: KR20110016177A
Application number: KR1020090073754A
Authority: KR
Inventors: 신승진
Original assignee: 신승진
Priority date: 2009-08-11
Filing date: 2009-08-11
Publication date: 2011-02-17

Abstract

PURPOSE: A device for preventing a nut from becoming loosened is provided to prevent the loosening of a nut since a fastening ring unit makes tight contact with a bolt body, and a locking rib is coupled to the outside of the bolt body to put into the valley of a male screw. CONSTITUTION: A device for preventing a nut from becoming loosened comprises a fastening ring unit(10) and a locking rib(23). The fastening ring unit has a shape of arc, which is larger than a semicircle. The locking rib is formed on at least one f the upper end, the lower end and the inner surface of the fastening ring unit. The fastening ring unit comprises a first ring-expanding unit(21) and a second ring-expanding unit(22). The first and second ring-expanding units are respectively bent externally from both ends.

Description

Nut for Preventing Nut from Loosing

1 is a perspective view of a nut loosening prevention device according to an embodiment of the present invention,

Figure 2 is a partially cutaway perspective view of the nut loosening prevention device according to an embodiment of the present invention,

Figure 3 is a plan view of the nut loosening prevention device according to an embodiment of the present invention,

Figure 4 is a longitudinal cross-sectional view of the nut loosening prevention device according to an embodiment of the present invention,

5 is a view showing a method of using a nut loosening prevention device according to an embodiment of the present invention,

FIG. 6 is an enlarged view of the area “B” shown in FIG. 5;

7 is a view showing a method of using a nut loosening prevention device according to an embodiment of the present invention,

FIG. 8 is an enlarged view of area “C” shown in FIG. 7;

9 is a perspective view of a conventional nut loosening prevention tool,

10 is a view showing a conventional method of using the nut loosening prevention tool.

Explanation of symbols on the main parts of the drawings

10: crimping ring portion 11: ring body portion

12: upper guide bar 13: lower guide bar

14: alignment bar 21: the first ring extension

22: second ring expansion unit 23: locking rib

24: support flange 110: support ring

123: crimp rib

The present invention relates to a nut loosening prevention device, and more particularly, to an apparatus for use in preventing loosening of a nut screwed to a male threaded portion formed on an outer surface of a bolt body.

Bolts and nuts are widely used because of their good workability and cohesion as components used to join separate objects.

However, there is a problem that the nut coupled to the bolt is loosened little by little due to the impact from the outside over time, so that the binding force between objects decreases, so as to prevent loosening of the nut screwed to the bolt to solve this problem. Means have been devised and used.

9 is a perspective view of a conventional nut loosening prevention tool.

As shown in FIG. 9, the conventional nut loosening prevention tool has a support ring 110 formed to form a circle, and a plurality of crimping ribs 123 formed on the support ring 110.

Each of the pressing ribs 123 may be formed by cutting one region of the support ring unit 110 in the form of a recess and then bending the support ring unit 110 toward the inside of the support ring unit 110. Here, the pressing rib 123 is formed to be inclined toward the loosening direction of the screw with respect to the inner surface of the support ring 110.

A method of using a conventional nut loosening prevention device having such a configuration will be described with reference to FIG. 10 as follows.

First, the receiving groove 202a is formed in the nut 202 along the longitudinal direction of the male screw portion 201c. In the receiving groove 202a, a prevention tool receiving groove 202b is formed.

Next, a conventional nut loosening prevention tool is provided in the prevention tool receiving groove 202b.

Next, the nut 202 provided with the nut release prevention screw is screwed into the bolt 201 so that the adherend 203 is pressed toward the bolt head 201b.

In the state in which the nut 202 is coupled to the bolt 201, the pressing rib 123 is pressed against the outer surface of the bolt body 201a, thereby preventing the nut 202 from loosening.

A conventional nut loosening prevention device having the above-mentioned configuration is disclosed in Utility Model Registration Application No. 16926 (the name of the design: Nut in which the loosening prevention device is incorporated) in 1998.

By the way, according to the conventional nut loosening prevention device, there is a problem that the loosening of the nut can not be stably prevented because the contact area between the pressing rib 123 and the male screw portion (plank) is small.

In addition, since the nut 202 has to be provided with the prevention tool receiving groove 202b and the conventional nut loosening prevention device must be installed in the prevention tool receiving groove 202b, there is a problem in that it is inconvenient to use.

It is therefore an object of the present invention to provide a nut loosening prevention device which can stably prevent loosening of a nut and is easy to use.

The object is, according to the present invention, in the nut loosening prevention tool for use in preventing the loosening of the nut screwed to the male screw formed on the outer surface of the bolt body, formed of an elastic material formed to form an arc shape larger than a semi-circle A compression ring portion; Loosening nut characterized in that it comprises a locking line of the threaded line locus formed on at least one of the upper, lower and inner surface of the pressing ring portion to enter the bone of the male screw portion when the pressing ring portion is coupled to the bolt body. Achieved by a protective device.

In order to be easily coupled to the bolt 201, it is preferable to further include a first ring expansion portion and a second ring expansion portion each bent outward from both ends of the pressing ring portion.

In order to prevent the nut from loosening more stably and to be easier to use, the pressing ring part has an arc-shaped ring body part, an upper guide bar extending from one end of the ring body part, the upper guide bar and the A lower guide bar extending from one end of the ring body to cooperate with a ring body to form a guide groove having an inner circumferential surface of the depression shape, and an alignment bar extending from the other end of the ring body to enter the guide groove; The first ring extension part is bent outwardly from the lower guide bar and the upper guide bar to form a depression shape, and the second ring extension part is engaged with the first ring extension part when approaching the first ring extension part. It is preferable to bend outward from the alignment bar to have a height section that can act.

In addition, the ring body portion is formed such that the cross-sectional area gradually decreases from the upper end to the lower end so as to more stably prevent loosening of the nut; It is preferable to further include a support flange formed to extend inclined toward the outside from the top of the ring body portion.

In addition, further comprising a support flange extending to be inclined toward the outside from the upper end of the ring body portion to further prevent the loosening of the nut; The first ring extension portion is formed to pass over the upper end of the support flange and mutually to prevent the first ring extension portion and the second ring extension portion from approaching each other when the first ring extension portion is pressed toward the lower guide bar. It is preferable that the locking projections and the locking grooves that act as a locking mechanism are dispersed in at least one of the upper guide bar and the lower guide bar and the alignment bar.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view of a nut loosening prevention device according to an embodiment of the present invention, Figure 2 is a partial cutaway perspective view of a nut loosening prevention device according to an embodiment of the present invention, Figure 3 is a nut loosening prevention device according to an embodiment of the present invention 4 is a longitudinal sectional view of a nut loosening prevention tool according to an embodiment of the present invention.

Nut loosening prevention device according to an embodiment of the present invention, as shown in these figures, the pressing ring portion 10 formed to form an arc shape larger than a semi-circle, and the first ring expansion portion 21 formed in the pressing ring portion 10 And a second ring extension 22, a locking rib 23, and a support flange 24. As shown in FIG.

The crimping ring part 10 includes an arc-shaped ring body part 11, an upper guide bar 12 and a lower guide bar 13 extending side by side from one end of the ring body part 11, and a ring body part 11. It has the alignment bar 14 extended from the other end of ().

The ring body portion 11 is formed such that the cross-sectional area becomes smaller gradually from the top toward the bottom.

In the upper guide bar 12, a substantially triangular engaging protrusion 12a protrudes toward the alignment bar 14 in an opposing area of the alignment bar 14.

The lower guide bar 13 extends from one end of the ring body portion 11 to cooperate with the upper guide bar 12 and the ring body portion 11 to form a guide groove 13a having an inner circumferential surface in the form of a depression.

The alignment bar 14 extends from the other end of the ring body portion 11 to enter the guide groove 13a.

In addition, the alignment bar 14 is formed by cutting a substantially triangular locking groove 14a in the opposite area of the locking projection 12a.

Accordingly, when the first ring extension portion 21 is pressed toward the lower guide bar 13, the locking protrusion 12a enters the locking groove 14a and the engagement between the locking groove 14a and the locking protrusion 12a. By the action, the first ring extension 21 and the second ring extension 22 can be prevented from approaching each other.

The pressing ring portion 10 having the above-described configuration is manufactured to have its own elastic force made of an elastic material such as spring steel.

The first ring extension portion 21 is bent outward from the lower guide bar 13 and the upper guide bar 12 to form a depressed shape. In this case, the first ring extension 21 is formed to extend beyond the upper end of the support flange 24.

The first ring extension portion 21 has a cutout surface 21a formed in the region of the second ring extension portion 22 on the upper surface thereof.

The second ring extension 22 is bent outward from the end of the alignment bar 14. In this case, the second ring extension part 22 is formed to have a height section capable of engaging with the first ring extension part 21 when approaching the first ring extension part 21.

The locking rib 23 has an intermediate locking rib 23a formed in the inner surface center region of the ring body portion 11 and a lower locking rib 23b formed at the lower end of the ring body portion 11.

The intermediate catching rib 23a is formed to form a right screw trajectory. Accordingly, when the pressing ring portion 10 is coupled to the bolt body 201a, the intermediate catching rib 23a may enter the valley of the male screw portion 201c.

The intermediate locking rib 23a having such a configuration may be formed by cutting one region of the ring body portion 11 in the form of a recess and then bending the ring body portion 11 toward the inside of the ring body portion 11.

The lower locking rib 23b is formed in the form of a right thread trajectory. Accordingly, when the pressing ring portion 10 is coupled to the bolt body 201a, the lower locking rib 23b may enter the valley of the male screw portion 201c.

The lower locking ribs 23b form an arc shape and are formed to gradually increase in width along the direction in which the thread trajectory progresses.

The support flange 24 is formed to be inclined outward from the top of the ring body portion 11.

The support flange 24 is formed to have an arc shape.

Nut loosening prevention apparatus according to an embodiment of the present invention having the above-described configuration can be produced by a press working method or the like.

The method of using a nut loosening prevention device according to an embodiment of the present invention having such a configuration will be described with reference to FIGS. 5 to 8 as follows.

First, the nut 202 is screwed to the bolt body 201a such that the adherend 203 is in pressure contact with the bolt head 201b.

Next, the crimping ring part 10 is expanded by approaching the first ring extension part 21 and the second ring extension part 22 using a tool such as a Vice Grip Plier.

Next, the operation of entering the bolt body 201a into the expanded crimping ring part 10 and the operation of returning the first ring extension part 21 and the second ring extension part 22 to their original positions are performed. The nut loosening prevention device according to the embodiment is coupled to the bolt 201. The intermediate locking rib 23a and the lower locking rib 23b enter the valley of the male screw portion 201c in a state in which the nut loosening prevention tool according to the embodiment of the present invention is coupled to the bolt 201 (Fig. 5 and Fig. 5). 6). Here, the lower locking rib 23b formed to gradually increase in width along the direction in which the thread trajectory progresses is formed along the line connecting the root and the mountain peak of the male screw portion 201c. Contact the flanks.

Since the crimping ring part 10 and the bolt body 201a are in pressure contact state by the self-elasticity of the crimping ring part 10 in a state in which the nut loosening prevention device according to the embodiment of the present invention is coupled to the bolt 201. The loosening of the nut 202 is prevented.

In addition, the intermediate catching rib 23a and the lower catching rib 23b entering the valley of the male screw portion 201c prevent the loosening operation of the nut 202.

Next, the nut loosening lock according to the embodiment of the present invention is rotated until the upper end of the support flange 24 is pressed against the nut 202. The upper guide bar 12 is in pressure contact with the nut 202 before the support flange 24 while rotating the nut loosening lock according to an embodiment of the present invention, the upper end of the support flange 24 is the nut 202 The locking projection 12a enters the locking groove 14a before being pressed under pressure (see Figs. 7 and 8).

When the locking projection 12a enters the locking groove 14a, the access operation between the first ring extension 21 and the second ring extension 22 is restricted, and thus the crimping ring part 10 and the bolt body ( It is possible to stably maintain the pressure contact state between 201a).

And the support flange 24 in pressure contact with the nut 202 prevents the nut 202 from loosening.

On the other hand, in the above-described embodiment, the locking ribs 23 are formed in the form of right-hand thread trajectory, but of course, the present invention can be implemented by forming the locking ribs in the form of left-hand thread trajectory.

And nut loosening prevention device according to the present invention can be applied regardless of the thread shape (triangular, trapezoid, etc.) of the male thread formed on the bolt.

In addition, in the above-described embodiment, the locking ribs 23 are formed on the lower end and the inner surface of the ring body portion 11, but the locking ribs are formed on the upper end of the ring body portion 11 (support flange is omitted). Of course it can be carried out.

According to the embodiment of the present invention as described above, the pressing ring 10 is in pressure contact with the bolt body 201a and the locking rib 23 to the outside of the bolt body 201a to enter the bone of the male screw portion 201c. By being coupled to, the nut can be stably prevented from loosening and can be easily used.

Further, by adding the first ring extension 21 and the second ring extension 22, it can be easily coupled to the bolt 201.

And by configuring the pressing ring portion 10 to include the upper guide bar 12 and the lower guide bar 13 and the alignment bar 14 to enter the guide groove 13a to form a guide groove (13a), It is more stable to prevent loosening (increasing the pressure contact area between the crimping ring and the bolt body) and it is easier to use (increasing the separation distance between the first ring extension and the second ring extension) Can be done).

In addition, by forming the ring body portion 11 so that the cross-sectional area becomes smaller gradually from the top to the lower end and the support flange 24 is formed in the ring body portion 11, it is possible to more stably prevent the loosening of the nut ( The crimping ring part can be prevented from being pushed along the length of the bolt beyond the thread of the male thread part).

In addition, by forming the engaging projection (12a) and the engaging groove (14a) in the pressing ring portion 10, it is possible to more stably prevent the loosening of the nut (unintentionally and the first ring expansion portion in the state of being installed on the bolt body) Second ring extension can be prevented).

Therefore, according to the present invention, by pressing the pressing ring portion in contact with the bolt body and the locking ribs to the outside of the bolt body to enter the bone of the male screw portion, it is possible to stably prevent the loosening of the nut and facilitate the use.

Claims

A nut loosening prevention device for use in preventing loosening of a nut screwed to a male threaded portion formed on an outer surface of a bolt body,

An elastic material pressing ring portion formed to have an arc shape larger than a semicircle;

Loosening nut characterized in that it comprises a locking line of the threaded line locus formed on at least one of the upper, lower and inner surface of the pressing ring portion to enter the bone of the male screw portion when the pressing ring portion is coupled to the bolt body. Protective equipment.

The method of claim 1,

The nut loosening prevention device further comprises a first ring expansion portion and a second ring expansion portion each bent outward from both ends of the pressing ring portion.

The method according to claim 1 or 2,

The pressing ring portion has a circular ring-shaped ring body portion, an upper guide bar extending from one end of the ring body portion, and the ring body to form a guide groove having an inner circumferential surface having a depression shape in cooperation with the upper guide bar and the ring body portion. A lower guide bar extending from one end of the portion and an alignment bar extending from the other end of the ring body portion to enter the guide groove;

The first ring extension part is bent outwardly from the lower guide bar and the upper guide bar to form a depression shape, and the second ring extension part is engaged with the first ring extension part when approaching the first ring extension part. The nut loosening prevention member, characterized in that it is bent outward from the alignment bar to have a height section that can act.

The method of claim 3,

The ring body portion is formed such that its cross-sectional area gradually decreases from the top to the bottom;

The nut loosening prevention member further comprises a support flange formed to extend toward the outside from the top of the ring body portion.

The method of claim 3,

And a support flange extending so as to be inclined outward from an upper end of the ring body portion;

The first ring extension is formed to pass over an upper end of the support flange;

When the first ring extension is pressed toward the lower guide bar, the locking projection and the locking groove which interlock with each other to prevent the first ring extension and the second ring extension from approaching each other, the upper guide bar and the lower guide. The nut loosening prevention member is distributed in at least one of the bars and the alignment bar.