KR101628685B1

KR101628685B1 - Locking devices for bolts

Info

Publication number: KR101628685B1
Application number: KR1020140154306A
Authority: KR
Inventors: 서민철
Original assignee: 두산중공업 주식회사
Priority date: 2014-11-07
Filing date: 2014-11-07
Publication date: 2016-06-09
Also published as: KR20160054819A

Abstract

The present invention relates to a loosening zone for a bolt.
To this end, the present invention relates to a hollow guider; A press forming head inserted into the lower portion of the hollow guider so as to reciprocate upward and downward; And a striking member inserted into the hollow guider so that the lower portion thereof abuts against the upper portion of the press forming head.
Therefore, the present invention prevents the bolt from being loosened by one stroke while preventing shock or impact noise from being generated in the process of preventing the bolt from being loosened.

Description

{LOCKING DEVICES FOR BOLTS}

The present invention relates to a bolt loosening ring, and more particularly, to prevent a bolt from being loosened by one stroke while preventing a shock or an impact sound from being generated in a process of preventing bolts from being loosened.

Generally, bolts and nuts are provided so as to have self-sustaining condition, and screw angle of screw is smaller than friction angle of slope, so that even if a load acts in the axial direction of screw, it is possible to prevent self-loosening of screw.

However, when the bolt and the nut are combined, the bolt or nut may be loosened due to external vibration or shock.

To solve this problem, a mechanical method is used, or a spring washer or a rubber washer, which is a method of using a large-elastic bolt or a large elastic component, is used in order to maintain the coupling force between the coupled parts .

However, when the nut is tightened with the spring washer inserted, there is a problem that the spring washer causes partial breakage, and there is another problem that the assembling process takes much time.

FIG. 1 is a perspective view showing an inner and an outer portion of a bolt in a state where a bolt is unblocked by using a bolt loosening zone according to the related art.

1, the upper and lower fixer bodies 70 and 70 'are coupled to each other by bolts 80, and then, due to other causes such as shock or vibration from the outside, The clamping piece 90 surrounding the bolt head 81 in the upper work fixing body 70 has a ring shape and is provided with a welded joint so as to prevent the bolt head 81 from being loosened from the jig 70 or 70 ' A part of the clamping piece 90 is press-fitted into the plurality of loosening preventing grooves 811 provided at the upper side edge of the clamping piece 81 so as to be prevented from being loosened.

2 is a block diagram showing a procedure for preventing bolt loosening by using a loosening bolt for a bolt according to the related art.

The process of preventing the bolts 80 from being loosened from the workpieces 70 and 70 'is performed as shown in the left side of FIG. 2 by moving the clamping pieces 90 to the periphery of the bolt grooves formed in the upper work fixing body 70 So that the lower portion of the upper fixed body 70 is seated on the upper portion of the lower fixed body 70 '.

Next, after the bolt 80 is inserted so that the bolt head 81 is inserted into the inside of the clamping piece 90, the lower end of the pressing rod 61 is clamped by the clamping head 81, The outer edge of the clamping piece 90 is deformed inward and is press-fitted into the release preventing groove 811 so that the bolt 80 is inserted into the release preventing groove 811. As a result, It is possible to prevent unraveling.

However, in order to prevent the bolts 80 from being loosened, the loosening preventing holes may be formed at least by the number of loosening preventing grooves 811 formed in the bolt head 81 by using the pressing rod 61 and the hammer 60 There is a problem that the workability is lowered.

In addition, there has been another problem in that an impact or an impact sound is generated in the process of preventing the bolts from being loosened, thereby hindering the working environment.

On the other hand, although an apparatus for preventing loosening of a bolt and a nut of a public utility model publication 1998-037777 (Sep. 15, 1998) has been proposed, an elastic member and a latch piece are provided in a fluid space provided in a nut, There is another problem in that the fixing groove is formed in the attaching member in an unproductive and costly manner due to an increase in the number of components or the number of processings.

Published Utility Model Publication No. 1998-037777 (September 15, 1998)

In the present invention, a part of the clamping piece is press-fitted into the loosening preventing groove formed in the entire one bolt head by one-time striking by inserting the press-forming head and the striking member into the hollow guider, So that the occurrence rate of shocks or impact sounds generated during the work can be reduced, and a comfortable working environment can be obtained.

The present invention relates to a hollow guider; A press forming head inserted into the lower portion of the hollow guider so as to reciprocate upward and downward; And a striking member inserted into the hollow guider so that a lower portion of the press-forming head abuts the upper portion of the press-forming head, wherein the positioning member is provided with a long hole having a vertical shape at the same position as the pressing member formed on the press- Wherein the hollow guider has a predetermined gap at the inner circumferential edge of the lower end side and has a protruding guide piece in the longitudinal direction of the hollow guider and has a recessed guide groove in which the protruding guide piece is inserted into the molding head body of the press forming head .

In addition, the hollow guider is characterized in that a handle portion is formed on an upper outer peripheral edge portion and an insertion guide portion is provided on an entrance side of a lower inner peripheral portion.

Further, the press-forming head is characterized in that convex pressing pins are arranged at regular intervals on the lower edge of the molding head body having the striking member seating jaws formed thereon.

Further, the striking member is characterized in that the steel bar is wound in a spiral shape.

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Further, the positioning unit is provided with a projection having a triangular shape.

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In addition, the hollow guider is provided with a release preventing ring at its upper end, and a striking assistance head mounted on an upper portion of the striking member protrudes by a predetermined length through the separation preventing ring.

In addition, the striking auxiliary head is characterized in that a latching piece is integrally provided at a lower portion of the auxiliary head body.

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According to the present invention, since the press-forming head and the hitting element are inserted into the hollow guider, it is possible to obtain an effect of enhancing workability so that a part of the clamping piece is press-fitted into the loosening preventing groove formed in the entire one bolt head by one stroke .

In addition, it is possible to minimize the occurrence of an impact or an impact sound generated during the operation.

And it has the effect of obtaining a pleasant working environment.

FIG. 1 is a perspective view showing the inside and outside of a bolt in a state where a bolt is unfastened by using a bolt loosening zone according to the related art. FIG.
BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a bolt.
3 is a perspective view of a loosening zone for a bolt according to the present invention.
FIG. 4 is an exploded perspective view of a release cylinder for a bolt according to the present invention. FIG.
FIG. 5 is a perspective view illustrating a process of preventing bolt loosening by using a bolt loosening zone according to the present invention. FIG.
FIG. 6 is a cross-sectional view illustrating a process of preventing bolt loosening by using a bolt loosening zone according to the present invention. FIG.
FIG. 7 is a perspective view and an exploded perspective view showing another embodiment of a bolt releasing ring according to the present invention; FIG.
8 is a perspective view and an exploded perspective view showing still another embodiment of a bolt-releasing bolt according to the present invention.
FIG. 9 is a perspective view and a bottom face recessed perspective view showing still another embodiment of a bolt releasing seat according to the present invention; FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 3 is a perspective view and an exploded perspective view of a bolt looper according to the present invention, and FIG. 4 is a bottom perspective view and a bottom exploded perspective view of a bolt looper station according to the present invention.

As shown in FIG. 3 and FIG. 4, the loosening prevention bolt for a bolt according to the present invention improves workability by partially pressing the clamping piece into a loosening preventing groove formed in one bolt head by one stroke. (10), a press forming head (20) and a striking member (30). That is, the press forming head 20 is inserted into the lower portion of the hollow guider 10 so as to reciprocate upward and downward, and the lower portion of the striking member 30 abuts against the upper portion of the press forming head 20, (Not shown).

The hollow guider 10 is provided with a grip 11 at an upper outer circumferential edge portion so as to be easily gripped by an operator and an insertion guide portion 12 at the entrance side of a lower inner circumferential portion, The clamping piece 90 welded to the lower portion can be easily inserted so as to protrude from the upper portion of the fixed body 70.

A positioning part 15 is provided outside the lower end of the hollow guider 10 at a position outside the lower end of the hollow guider 10 to be described later and at the same position as the pressing piece 23 formed on the press forming head 20, The pressing piece 23 of the press-forming head 20 inserted into the bolt 80 can coincide with the unlocking groove 811 of the bolt 80. At this time, it is preferable that the positioning unit 15 is provided with a projection 151 having a triangular shape, and it is more preferable that the pointed portion of the projection 151 faces downward.

The press forming head 20 is moved downward by the striking force applied through the striking member 30 and at the same time the outer upper edge of the clamping piece 90 is deformed inward to form an unwind prevention groove 811 A pressing member 23 is formed at a predetermined interval on the lower edge of the forming head body 21 so as to be spaced apart from the pressing member 23 by a predetermined distance Respectively.

The striking member 30 has a function of allowing a worker to strike using a hammer or the like and to reduce a striking sound, and the steel bar is wound so as to be spirally wound. The striking member 30 may be a coil spring.

FIG. 5 is a perspective view illustrating a process of preventing bolts from being loosened by using a bolt loosening zone according to the present invention. FIG. 6 is a view illustrating a process of preventing bolt loosening by using a bolt loosening zone according to the present invention. Fig.

5 and 6, the lower portion of the clamping piece 90 is inserted into the periphery of the bolt groove formed in the upper fixed body 70, So that the lower portion of the upper fixed body 70 is seated on the upper portion of the lower fixed body 70 '.

5) of the hollow guider 10 after the bolt 80 is inserted so as to insert the bolt head 81 into the inside of the clamping piece 90. Then, The insertion guide portion 12 provided at the lower portion of the hollow guider 10 is inserted into the clamping piece 90 provided in the upper fixed body 70 (shown at the first and second positions from the left side of FIG. 6) . The protrusion 151 of the positioning portion 15 provided at the lower end of the hollow guider 10 is aligned with the release preventing groove 811 of the bolt 80, Lt; RTI ID = 0.0 > 811 < / RTI >

Next, using a hitting tool such as a hammer (not shown), the striking member 30 strikes the striking member 30 located inside the upper portion of the hollow guider 10, and the striking force is transmitted to the press forming head 20, the press forming head 20 moves downward along the inner periphery of the hollow guider 10. At this time, since the striking member 30 is wound in the form of a spiral, the excessive impact can be prevented and noise can be reduced.

Then, the pressing piece 23 of the press-forming head 20 moved downward simultaneously presses the outer upper edge of the clamping piece 90 inwards to deform the pressing head 20 further downward So that the deformation continues and the lower portion of the press forming head 20 is separated from the bolt head 81 after being press-fitted into the release preventing groove 811 formed in the bolt head 81, The unlocking operation of the bolt 80 can be continued (shown from the left side of Fig. 6).

FIG. 7 is a perspective view and an exploded perspective view showing another embodiment of a bolt releasing ring according to the present invention. FIG.

In the present invention, the upper portion of the striking member 30 is directly exposed to the inside of the upper portion of the hollow guider 10. However, as shown in Fig. 7, the hollow guider 10 has a hollow guider (D) having an inner diameter (d) narrower than the outer diameter (D) of the striking auxiliary head (40) in the state where the striking auxiliary head (40) May protrude upward through the release-preventing ring 13 by a predetermined length. At this time, the striking assistance head 40 can prevent the securing piece 411 from being separated from the hollow guider 10 by being integrally provided at the lower part of the auxiliary head body 41.

In this case, the worker can hurt more easily than when hitting the upper end of the impacting body directly by using the hammer, so that workability can be improved and safety can be further enhanced.

FIG. 8 is a perspective view and an exploded perspective view showing still another embodiment of a bolt releasing ring according to the present invention. FIG.

In the present invention, the press-forming head 20 is simply inserted into the lower part of the hollow guider 10, but in addition to this form, the hollow guider 10 is provided at a predetermined interval And the protruding guide piece 14 is provided in the longitudinal direction of the hollow guider 10 so that the protruding guide piece 14 is inserted into the molding head body 21 of the press forming head 20 24 can be provided.

In this case, since the pressing head 20 is prevented from rotating inside the hollow guider 10 in the process of repeating the striking process, the position of the pressing piece 23 can be prevented from being changed, It is possible to accurately press the clamping piece 90 located outside the flip-off preventing groove 811 formed in the clamping piece 811. [

FIG. 9 is a perspective view and a bottom face recessed perspective view showing another embodiment of a bolt releasing seat according to the present invention. FIG.

In the present invention, the positioning portion 15 having the projection-like shape is provided outside the lower end of the hollow guider 10 at the same position as the pressing piece 23 formed on the press forming head 20, The positioning portion 15 may be provided as a long hole 152 having a vertical shape.

In this case, in the process of inserting the lower end of the hollow guider 10 into the bolt head 81, the loosening preventing groove 811 can be seen through the slot 152 to be aligned with a more accurate position.

10: hollow guider
11: Handle portion
12: insertion guide portion
20: Press forming head
21: forming head body
23:
30:
211: stabbing jaw

Claims

A hollow guider;
A press forming head inserted into the lower portion of the hollow guider so as to reciprocate upward and downward; And
And a striking body inserted into the hollow guider so as to abut the lower portion of the upper portion of the press forming head,
A positioning portion provided with a slot having a vertical shape at the same position as the pressing piece formed on the press forming head outside the lower end of the hollow guider,
Wherein the hollow guider has a constant interval at the inner periphery of the lower end side and has a protruding guide piece in the longitudinal direction of the hollow guider,
Wherein the molding head body of the press-forming head is provided with recessed guide grooves into which the protruding guide pieces are inserted.

The method according to claim 1,
Wherein the hollow guider has a handle portion formed on an upper outer circumferential edge portion, and a insertion guide portion is provided on an inlet side of a lower inner peripheral portion.

The method according to claim 1,
Wherein the press-forming head has convex pushing pins arranged at regular intervals in a lower edge of a forming head body having a striking member seat on an upper portion thereof.

The method according to claim 1,
Wherein the impact body is wound in a spiral shape in a steel bar.

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The method according to claim 1,
Wherein the positioning portion is provided with a projection having a triangular shape.

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The method according to claim 1,
Wherein the hollow guider is provided with a release preventing ring at an upper end thereof, and a striking assistance head mounted on an upper portion of the striking member protrudes by a predetermined length through the release preventing ring.

9. The method of claim 8,
Wherein the striking auxiliary head is integrally provided with a latching piece at a lower portion of the auxiliary head body.

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