KR20150016892A - Lock nut for preventing being released - Google Patents

Lock nut for preventing being released Download PDF

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Publication number
KR20150016892A
KR20150016892A KR1020140085128A KR20140085128A KR20150016892A KR 20150016892 A KR20150016892 A KR 20150016892A KR 1020140085128 A KR1020140085128 A KR 1020140085128A KR 20140085128 A KR20140085128 A KR 20140085128A KR 20150016892 A KR20150016892 A KR 20150016892A
Authority
KR
South Korea
Prior art keywords
nut
main nut
main
circular
wall
Prior art date
Application number
KR1020140085128A
Other languages
Korean (ko)
Inventor
이재형
Original Assignee
이재형
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 이재형 filed Critical 이재형
Publication of KR20150016892A publication Critical patent/KR20150016892A/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B37/00—Nuts or like thread-engaging members
    • F16B37/08—Quickly-detachable or mountable nuts, e.g. consisting of two or more parts; Nuts movable along the bolt after tilting the nut
    • F16B37/0807—Nuts engaged from the end of the bolt, e.g. axially slidable nuts
    • F16B37/0828—Nuts engaged from the end of the bolt, e.g. axially slidable nuts with a longitudinal slit through the annular wall of the nut for enabling expansion of the nut, e.g. for easy removal
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B37/00—Nuts or like thread-engaging members
    • F16B37/08—Quickly-detachable or mountable nuts, e.g. consisting of two or more parts; Nuts movable along the bolt after tilting the nut
    • F16B37/0807—Nuts engaged from the end of the bolt, e.g. axially slidable nuts
    • F16B37/0864—Nuts engaged from the end of the bolt, e.g. axially slidable nuts with the threaded portions of the nut engaging the thread of the bolt by pressing or rotating an external retaining member such as a cap, a nut, a ring or a sleeve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B39/00—Locking of screws, bolts or nuts
    • F16B39/02—Locking of screws, bolts or nuts in which the locking takes place after screwing down
    • F16B39/04—Locking of screws, bolts or nuts in which the locking takes place after screwing down with a member penetrating the screw-threaded surface of at least one part, e.g. a pin, a wedge, cotter-pin, screw
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B39/00—Locking of screws, bolts or nuts
    • F16B39/02—Locking of screws, bolts or nuts in which the locking takes place after screwing down
    • F16B39/12—Locking of screws, bolts or nuts in which the locking takes place after screwing down by means of locknuts
    • F16B39/126—Locking of screws, bolts or nuts in which the locking takes place after screwing down by means of locknuts causing radial forces on the bolt-shaft
    • F16B39/128—Locking of screws, bolts or nuts in which the locking takes place after screwing down by means of locknuts causing radial forces on the bolt-shaft by means of eccentrical or spiral interengaging parts

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Plates (AREA)

Abstract

The present invention relates to an anti-release lock nut and, more particularly, to perfectly preventing main nut release by using a simple operation in which an outer wall nut assembled outside the main nut is further rotated in a fastening state during bolt-nut fastening. The present invention includes a main nut (10) in which a female screw portion (11) is formed in the inner diameter and circular outer portions (12) and linear outer portions (13) are repeatedly formed in the outer diameter for screw-fastening between a bolt (30) and a male screw portion (31) and a cut portion (15) is formed on one side to allow elastic tightening and loosening; and an outer wall nut (20) in which circular inner portions (22) and linear inner portions (23) having dimensions and shapes corresponding to those of the circular outer portions (12) and the linear outer portions (13) are repeatedly formed in the inner diameter so that the main nut (10) is accommodated inside and a fastening surface (21) is formed in the outer diameter to allow engagement by a wrench tool.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a lock nut for preventing loosening,

The present invention relates to a locking nut for preventing loosening, and more particularly, to a locking nut for preventing loosening of a main nut when the nut is tightened by a simple operation of further rotating an outer wall nut assembled to the outside of the main nut in a tightened state So that it can be prevented.

Generally, a nut is fastened to a bolt fastened to a specific fastening object, and a general-purpose nut and an anti-loose nut are used for such a nut.

Currently used anti-loosening nuts include U (nut), Nylon nut, Teflon nut, Spring washer nut, Ti lock nut, Node lock nut, ERM nut, Double nut, And is widely used.

Korean Unexamined Patent Publication No. 10-2013-0073175 discloses a double nut for preventing loosening, and Korean Unexamined Patent Application Publication No. 10-2001-0021476 discloses a nut body provided with a release preventing spring.

Korean Patent Laid-Open Publication No. 10-2013-0073175 (published on Mar. 03, 2013) Korean Patent Publication No. 10-2001-0021476 (published on March 15, 2001)

The conventional anti-loose nuts constructed as described above are used for a railway vehicle and a rail portion where vibration continuously occurs, a steel structure connection portion of a bridge where a vehicle is repeatedly inserted and removed, a steel tower structure which is influenced by wind, It is said that the significance of the playground equipment is absolute in many places.

However, as a unique function of the loosening preventing nut as described above, the loosening must be prevented in any case, and the loosening must be prevented continuously. Nevertheless, the loosening is arbitrarily disengaged, and safety accidents often occur.

Particularly, since the conventional anti-loosening nuts are manufactured in a structure in which most of the nuts are locked and can not be directly held, there is a problem that the loosening is arbitrarily released.

In addition, there is also a disadvantage that it is difficult for a general person who has no expert knowledge to handle, because the number of parts is increased or the operation is difficult for the loosening prevention function to make the user feel uncomfortable.

It is an object of the present invention to provide a lock nut for preventing loosening by completely tightening the bolts and nuts while elastically tightening the bolts and nuts.

Another object of the present invention is to provide a lock nut for preventing loosening, which is easy to operate and which can improve the convenience of the user and the reliability of the product.

In order to achieve the above object, the present invention is characterized in that a female screw portion 11 is formed on an inner diameter so as to be screwed on the male screw portion 31 of the bolt 30, and a circular outer portion 12 and a straight outer portion 13 A main nut 10 having an incision 15 formed at one side thereof so as to be elastically tightened and unfastened;

The circular inner portion 22 and the linear inner portion 23 are repeatedly formed in the inner diameter so that the main nut 10 is accommodated in the inner portion of the main nut 10 in a dimension and shape corresponding to the circular outer portion 12 and the linear outer portion 13 of the main nut 10. [ And an outer wall nut (20) having an engagement surface (21) formed to be able to be engaged by a wrench tool.

In this case, a locking protrusion 17 is formed at the upper end of the outer diameter of the main nut 10, and a supporting protrusion 27 for preventing the detachment of the locking protrusion 17 in the downward direction is formed in the outer wall nut 20 .

According to the present invention, the female threaded portion of the main nut is completely brought into close contact with the male threaded portion of the bolt, thereby eliminating the clearance, thereby completely preventing the nut from being loosened.

In addition, it is possible to reuse repeatedly by releasing the release prevention, and the structure is relatively simple and the operation is easy, so that convenience of the user is improved.

1 is a bottom perspective view showing an assembly of a lock nut according to the present invention.
FIG. 2 is an exploded bottom perspective view showing a state in which a main nut and an outer wall nut are assembled. FIG.
3 is a cross-sectional view of the lock nut of the present invention fastened to a bolt;
4 is a bottom view of the outer wall nut.
5 is a bottom view of the main nut.
Fig. 6 is a bottom view of the main nut and outer wall nut rotated together for screwing into the bolt; Fig.
FIG. 7 is a bottom view showing a state in which the outer wall nut and the main nut are further tightened so that the circular part and the straight part of the main nut are shifted from each other in order to prevent loosening.
8 is a plan sectional view showing a state in which a wedge is inserted to release the main nut.

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

1 to 8, when the nut is separated from the main nut 10 and the outer wall nut 20 and the nut is fastened to the bolt, the outer wall nut 20 is further rotated at an arbitrary angle, So that the nut 10 can be tightened tightly against the bolt, thereby preventing the nut 10 from being loosened.

The lock nut assembly for preventing loosening according to the present invention includes a main nut 10 directly fastened to the male screw portion 31 of the bolt 30, And an outer wall nut (20) for transmitting the outer nut (20) to the main nut (10).

The inner diameter of the main nut 10 is substantially the same as that of the outer diameter 12 of the bolt 30. The outer diameter of the annular outer portion 12 And the straight line 13 are repeatedly formed.

In addition, a cutout 15 for vertically cutting a cylindrical main nut 10 to a predetermined width is formed so as to be elastically tightened and loosened.

The outer wall nut 20 is also made of a ferrous metal and has an inner diameter such that the circular outer portion 12 and the linear outer portion 13 of the main nut 10 The circular inner portion 22 and the linear inner portion 23 are repeatedly formed in dimensions and shapes corresponding to those of the first embodiment.

The outer diameter of the outer wall nut 20 has a nut shape in which a hexagonal fastening surface 21 is formed to be able to be engaged by a wrench tool.

In this case, a locking protrusion 17 is formed at the upper end of the outer diameter of the main nut 10, and a supporting protrusion 27 for preventing the detachment of the locking protrusion 17 in the downward direction is formed in the outer wall nut 20 .

3, the main nut 10 is prevented from coming off from the outer wall nut 20 when it is fastened to the bolt 30, and is assembled in a state of being rotatable in a tightening operation for preventing loosening .

The circular inner portion 22 and the linear inner portion 23 of the outer wall nut 20 and the circular outer portion 12 and the linear outer portion 13 of the main nut 10 are assembled together with the outer wall nut 20, The nut 10 is designed to have tolerances such that no clearance is generated or loosened.

Although the circular inner portion 22 and the linear inner portion 23 as well as the circular outer portion 12 and the linear outer portion 13 are divided into six equal parts and equally spaced at 360 degrees, It is also possible to design it to be free.

Hereinafter, the assembling process of the lock nut assembly for preventing loosening and the loosening of the main nut of the present invention will be described.

First, the positions of the circular inner portion 22 and the linear inner portion 23 of the outer wall nut 20 and the circular outer portion 12 and the linear outer portion 13 of the main nut 10 coincide with each other at the same position, 20, the main nut 10 is fitted and assembled.

In this state, a fastening operation is performed using a wrench tool or the like so that the male screw portion 31 of the bolt 30 and the female screw portion 11 of the main nut 10 are screwed together with the fastening member 1 interposed therebetween.

Since the circular inner portion 22 and the linear inner portion 23 of the outer wall nut 20 are in contact with and fixed to the linear outer portion 13 and the circular outer portion 12 of the main nut 10, The outer wall nuts 20 are rotated together and a general screw tightening state is performed (Figure 6)

In this state, when the outer wall nut 20 is rotated in the releasing direction, the main nut 10 rotates together with the outer wall nut 20 in the releasing direction and can be disassembled from the bolt 30, Maintenance work becomes possible.

In order to prevent the main nut 10 and the outer wall nut 20 from loosening, the female threaded portion 31 of the bolt 30 and the female threaded portion 11 of the main nut 10 are screwed as far as possible, (20) is brought into contact with the clamped member (1).

When the outer wall nut 20 is engaged until the outer wall nut 20 comes into contact with the engaged member 1 and the outer wall nut 20 is rotated in the continuous locking direction when the unlocking function is desired, Is no longer able to ride the threads in contact with the clamped member 1, so that only the outer wall nut 20 can rotate further.

Accordingly, when the outer wall nut 20 is rotated at a predetermined angle in the normal position, the straight inner portion 23 is moved to the position of the circular outer portion 12 of the main nut 10, and the cut portion 15 The main nut 10 capable of being elastically deformed is pressed against the male threaded portion 31 of the bolt 30 and the female threaded portion 11 and the male threaded portion 31 are elastically tightened without any clearance to prevent the loose . (Fig. 7)

This is because the radius of the circular outer portion 12 and the circular inner portion 22 is smaller than the radius to the center of the straight outer portion 13 and the linear inner portion 23, The main nut 10 is tightened by the difference in radius when the main nut 10 is moved to the position of the circular outer portion 12 of the main nut 10.

Therefore, the main nut 10 tightly adheres the male threaded portion 31 of the bolt 30 to eliminate the clearance, and strongly presses all the surfaces of the threaded portion to completely prevent the main nut 10 from being loosened even if vibration or impact is applied thereto. I can do it.

When the outer wall nut 20 is rotated in the screw releasing direction when the locking is to be released, the main nut 10, which was in close contact with the bolt 30, The clamping force applied to the main nut 10 is released after the positions of the straight outer 13 and the straight inner 23 and the circular outer 12 and the circular inner 22 coincide with each other so that the loosening can be released do

On the other hand, when the main nut 10 is pressed against the male threaded portion 31 of the bolt 30 for the reason that the elastic force of the main nut 10 is lost or corrosion occurs due to the long unlocking prevention locking state, A wedge 40 may be used for the wedge 40 (Fig. 8)

That is, when the wedge grooves 25 are drilled around the outer wall nut 20 and the wedge 40 is advanced to a position corresponding to the cutout 15 of the main nut 10, So that the tightening force can be released and the nut can be loosened freely.

The present invention is applied to a locknut technique for preventing unloading by vibration or impact in various industries.

10 - Main nut 11 - Female thread part
12 - Circle Outside 13 - Straight Outside
15 - incision 17 - jaw
20 - outer wall nut 21 - fastening surface
22 - Round Inner 23 - Straight Inner
25 - wedge groove 27 - support jaw
30 - Bolt 31 - Male thread
40 - Wedge

Claims (2)

A female thread 11 is formed on an inner diameter of the bolt 30 so as to be screwed with the male thread 31 of the bolt 30. A circular outer portion 12 and a linear outer portion 13 are repeatedly formed on the outer diameter, A main nut 10 having an incision 15 formed at one side thereof so as to be able to be rotated;
The circular inner portion 22 and the linear inner portion 23 are repeatedly formed in the inner diameter so that the main nut 10 is accommodated in the inner portion of the main nut 10 in a dimension and shape corresponding to the circular outer portion 12 and the linear outer portion 13 of the main nut 10. [ And an outer wall nut (20) having a fastening surface (21) formed in the outer diameter so as to be able to be engaged by a wrench tool.
The main nut (10) according to claim 1, wherein a locking step (17) is formed at an upper end of the outer diameter of the main nut (10), and a locking protrusion (17) 27) are formed in the lock nut (20).
KR1020140085128A 2013-08-05 2014-07-08 Lock nut for preventing being released KR20150016892A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020130092340 2013-08-05
KR20130092340 2013-08-05

Publications (1)

Publication Number Publication Date
KR20150016892A true KR20150016892A (en) 2015-02-13

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ID=52573476

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KR1020140085128A KR20150016892A (en) 2013-08-05 2014-07-08 Lock nut for preventing being released

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109891108A (en) * 2016-09-27 2019-06-14 赛格纳特私人有限公司 The improvement of segmented nut
CN110454488A (en) * 2019-07-23 2019-11-15 瑞通机械张家口有限公司 A kind of compound nut that automatically lock is anti-loosening
WO2020115271A1 (en) * 2018-12-07 2020-06-11 Addup Nut having a slot for a selective additive manufacturing apparatus
CN115126762A (en) * 2022-05-18 2022-09-30 浙江科腾精工机械股份有限公司 Bolt and nut cooperation subassembly that high compactness is prevented pine

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109891108A (en) * 2016-09-27 2019-06-14 赛格纳特私人有限公司 The improvement of segmented nut
EP3519707A4 (en) * 2016-09-27 2020-05-06 Segnut Pty Ltd. Improvements to segmented nuts
US11649846B2 (en) 2016-09-27 2023-05-16 Segnut Pty Ltd Segmented nuts
AU2017333595B2 (en) * 2016-09-27 2023-11-23 Segnut Pty Ltd Improvements to segmented nuts
WO2020115271A1 (en) * 2018-12-07 2020-06-11 Addup Nut having a slot for a selective additive manufacturing apparatus
FR3089579A1 (en) * 2018-12-07 2020-06-12 Addup SLOT NUT FOR selective additive manufacturing device
CN113165072A (en) * 2018-12-07 2021-07-23 Addup公司 Nut with slot for selective additive manufacturing apparatus
CN110454488A (en) * 2019-07-23 2019-11-15 瑞通机械张家口有限公司 A kind of compound nut that automatically lock is anti-loosening
CN115126762A (en) * 2022-05-18 2022-09-30 浙江科腾精工机械股份有限公司 Bolt and nut cooperation subassembly that high compactness is prevented pine

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