KR20110008702A - Lock nut - Google Patents

Lock nut Download PDF

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Publication number
KR20110008702A
KR20110008702A KR1020090066185A KR20090066185A KR20110008702A KR 20110008702 A KR20110008702 A KR 20110008702A KR 1020090066185 A KR1020090066185 A KR 1020090066185A KR 20090066185 A KR20090066185 A KR 20090066185A KR 20110008702 A KR20110008702 A KR 20110008702A
Authority
KR
South Korea
Prior art keywords
coil spring
nut
coupled
bolt
nut body
Prior art date
Application number
KR1020090066185A
Other languages
Korean (ko)
Inventor
문상열
Original Assignee
(주)파워렉스코퍼레이션
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 (주)파워렉스코퍼레이션 filed Critical (주)파워렉스코퍼레이션
Priority to KR1020090066185A priority Critical patent/KR20110008702A/en
Publication of KR20110008702A publication Critical patent/KR20110008702A/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
    • F16B39/00—Locking of screws, bolts or nuts
    • F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
    • F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
    • F16B39/34—Locking by deformable inserts or like parts

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Springs (AREA)

Abstract

The present invention relates to a lock nut of a new structure that can be easily released as needed.

When the lock nut according to the present invention is coupled to the threaded portion 1a of the bolt 1, the coil spring 20 is opened and the tip portion is rotated along the opening, so that the coil spring 20 is suitable for the circumference of the bolt 1. It is fixed by pressing elastically so as not to loosen, and when the box 30 is coupled to the outside of the nut body 10, the coil spring 20 is pushed back by the coupling hole 31 of the box 30, the coil spring Since the inner diameter of (20) is widened, the coupling force between the coil spring 20 and the threaded portion 1a of the bolt 1 is weakened, so that the lock nut can be rotated and released.

Lock nut, coil spring, diameter, release, loosened

Description

Lock nut

The present invention relates to a lock nut of a new structure that can be easily released as needed.

Generally, nuts are screwed into bolts and used to secure two or more different members to each other.

On the other hand, in recent years, lock nuts have been developed and widely used to prevent unintentional loosening of nuts in a state where nuts and bolts are coupled.

1 and 2 show an example of such a lock nut, a nut main body 10 and a nut main body formed so that the coupling hole 11 into which the threaded portion 1a of the bolt 1 is fitted passes through the front and rear surfaces. 10 is made of a coil spring 20 is inserted into the coupling hole 11 of the coupling hole 11, the coupling hole 11 and the coupling portion (11a) is formed with a screw thread engaged with the screw portion (1a) of the bolt (1) and The inner diameter is larger than the coupling portion 11a, and the enlarged diameter portion 11b into which the coil spring 20 is inserted is installed.

At this time, the enlarged diameter portion (11b) is formed to be located on the rear surface of the nut body 10, that is, the opposite side of the direction in which the nut body 10 is coupled to the bolt (1) compared to the coupling portion (11a), The rear end of the neck portion (11b) is formed with a latching jaw (12) for the rear end of the coil spring (20). In addition, a radial fixing groove 13 is formed on the rear surface of the nut body 10, and the rear end portion 21 of the coil spring 20 is bent to the outside to be fixed to the fixing groove 13.

Therefore, when the bolt 1 is coupled to the coupling hole 11, the threaded portion 1a of the bolt 1 is engaged with the thread of the coupling portion 11a and the coil spring 20 is connected to the threaded portion of the bolt 1 ( Since the outer peripheral surface of the bolt 1 is elastically pressed in engagement with 1a), when the lock nut is rotated in the unwinding direction, the rear end of the coil spring 20 is pulled out to be more tightly attached to the threaded portion 1a, thereby engaging the bolt 1. It is configured to prevent the lock nut from being released by an unintentional external force such as vibration in the installed state.

By the way, the lock nut is coil spring 20 is strongly coupled to the threaded portion (1a) of the bolt (1) and the coil spring (20) is the threaded portion of the bolt (1) when the nut body 10 is rotated in the unwinding direction ( 1a) It is wound around the outer circumference. Therefore, in order to release the lock nut, the lock nut has to be rotated with a very strong force such that the coil spring 20 in close contact with the threaded portion 1a slides, and thus, it is very difficult to release the lock nut. In particular, when forcibly rotating the lock nut with such a strong force, there was a problem that the coil spring 20 is damaged and the lock nut cannot be reused.

Therefore, there is a need for a new lock nut that can be easily removed and reused from the bolt 1 without damaging the coil spring 20 as necessary.

The present invention has been made to solve the above problems, and an object thereof is to provide a lock nut of a new structure that can be easily removed from the bolt and reused without damaging the coil spring.

The present invention for achieving the above object, the nut body 10 and the coupling hole of the nut body 10 is formed so that the coupling hole 11 through which the threaded portion 1a of the bolt 1 is fitted. (11) made of a coil spring 20 inserted therein, the rear end 21 of the coil spring 20 is fixed to a fixing groove 13 formed in the rear of the nut body 10, the When the nut body 10 is coupled to the threaded portion 11a of the bolt 1, the coil spring 20 is coupled to the threaded portion 1a to lock the nut body 10 so as not to rotate.

An opening 14 is formed in a circumferential surface of the nut body 10, and the tip portion 22 of the coil spring 20 is inserted into the opening 14 to protrude out of the nut body 10. The opening 14 is extended to the left and right to provide a lock nut, characterized in that the front end portion 22 of the coil spring 20 can be rotated from side to side along the opening 14.

According to another feature of the invention, the front end portion 22 of the coil spring 20 extends in a tangential direction with respect to the direction in which the coil spring 20 is wound of the nut body 10 through the opening (14) Exposed to the outside, the coil spring 20 is the direction in which the front end portion 22 is rotated when the nut body 10 is released from the front center portion of the nut body 10 when coupled to the threaded portion (1a) of the bolt (1) A lock nut is provided, characterized in that it is arranged to be biased.

According to another feature of the invention, the coupling hole 11 has a larger inner diameter than the coupling portion (11a) and the coupling portion (11a) and the coupling portion (11a) is formed threaded to engage the threaded portion (1a) of the bolt (1) The coil spring 20 is formed of an enlarged diameter portion 11b to be inserted and installed, and the enlarged diameter portion 11b has an inner diameter larger than that of the coil spring 20 coupled to the screw portion 1a. A lock nut is provided, wherein a clearance g is formed between the outer side of the coil spring 20 and the inner circumferential surface of the enlarged diameter portion 11b in a state in which the coil spring 20 is coupled to the threaded portion 1a.

When the lock nut according to the present invention is coupled to the threaded portion 1a of the bolt 1, the coil spring 20 is opened and the tip portion is rotated along the opening, so that the coil spring 20 is suitable for the circumference of the bolt 1. When the elastically pressurized and fixed so as not to loosen, when the box 30 is coupled to the outside of the nut body 10, the wire end of the coil spring 20 is pushed back by the coupling hole 31 of the box 30 and the coil is retracted. Since the inner diameter of the spring 20 is widened, the coupling force between the coil spring 20 and the threaded portion 1a of the bolt 1 is weakened, so that the lock nut can be rotated and released.

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

3 to 6, the nut body 10 and the nut body 10 formed so that the coupling hole 11 through which the threaded portion 1a of the bolt 1 according to the present invention passes through the front and rear surfaces. Consists of the coil spring 20 is inserted into the ball 11, the rear end 21 of the coil spring 20 is fixed to the fixing groove 13 formed in the rear of the nut body 10, When the nut body 10 is coupled to the threaded portion 11a of the bolt 1, the coil spring 20 is coupled to the outside of the screwed portion 1a to fix the nut body 10 so as not to rotate. Same as the lock nut. At this time, the nut main body 10 is composed of a hexagon, and the coupling hole 11 is coupled to the threaded portion (11a) and the coupling portion (11a) formed with a thread engaging the threaded portion (1a) of the bolt (1) In comparison, the inner diameter is formed to be large, and the enlarged diameter portion 11b into which the coil spring 20 is inserted is installed.

At this time, the coil spring 20 is manufactured by winding an elastic wire in a spiral direction so as to have a smaller diameter than the diameter of the screw portion 1a so as to be strongly coupled to the outer peripheral surface of the screw portion 1a. Therefore, when the nut body 10 is coupled to the outside of the screw portion 1a of the bolt 1, the coil spring 20 is coupled to the outer peripheral surface of the screw portion 1a while the coil spring 20 is burnt by the screw portion 1a. The outer diameter of the coil spring is increased and the tip portion 20 of the coil spring 20 is moved forward and backward in the direction in which the coil spring 20 is wound.

In addition, according to the present invention, an opening portion 14 is formed in a circumferential surface of the nut body 10, and the front end portion 22 of the coil spring 20 protrudes out of the nut body 10. 14 is inserted.

In detail, the opening 14 is formed to be long in the left and right direction on the front surface of the nut body 10, and the coil spring 20 is coupled to the threaded portion 1a of the bolt 1 when the coil spring 20 The tip portion 22 of the 20 is configured to be rotated at a predetermined interval in the state of being inserted into the opening 14. That is, when the front end portion 22 of the coil spring 20 is coupled to the threaded portion 1a of the bolt 1, as shown in FIG. 6, the inner surface of the coil spring 20 is externally opened by the threaded portion 1a. As the diameter increases, the tip end portion 22 of the coil spring 20 rotates back and forth in the direction in which the coil spring 20 is wound. Accordingly, the opening 14 is formed long in the horizontal direction so as to correspond to an angle at which the tip 22 of the coil spring 20 is rotated by the coupling of the threaded portion 1a, so that the tip of the coil spring 20 ( 22) can be freely rotated in the state of being inserted into the opening (14).

In addition, the front end portion 22 of the coil spring 20 extends in a tangential direction with respect to the direction in which the coil spring 20 is wound and is exposed to the outside of the nut body 10 through the opening 14. At this time, the opening portion 14 extends to the side surface 10b which rotates when the nut body 10 is loosened, and the coil spring 20 is coupled to the screw portion 1a of the bolt 1 when the tip portion ( 22 is arranged to be biased in the direction in which the nut body 10 is rotated when the nut body 10 is released from the center of the front surface (10a) of the nut body (10). That is, since the lock nut according to the present invention is configured in a right-handed manner in which the lock nut is rotated in a counterclockwise direction, the opening portion 14 extends to the side surface 10b inclined to the right side of the nut body 10, and the coil spring 10 is disposed such that the front end portion 22 is located at the right end portion of the front surface 10a of the nut main body 10 while being coupled to the threaded portion 1a of the bolt 1.

In addition, the enlarged diameter portion (11b), as shown in Figure 5, the inner diameter is formed larger than the outer diameter of the coil spring 20 coupled to the screw portion (1a), the coil spring (20) is a screw portion (1a) The gap g is configured to be formed between the outer side of the coil spring 20 and the inner circumferential surface of the enlarged diameter portion 11b in a state coupled thereto.

Referring to the operation of the lock nut configured as described above is as follows.

First, as shown in FIG. 6, before the lock nut is coupled to the bolt 1, the coil spring 20 maintains a reduced diameter, and the tip portion 22 is positioned on the left side of the opening 14. .

And, if the user screwed the nut body 10 to the threaded portion (1a) of the bolt (1), as shown in Figure 7, the coil spring 20 is coupled to the outside of the screw portion (1a) coil spring The diameter of the 20 is increased in the state shown by the solid line in the state shown by the dotted line, so that the tip portion 22 is rotated to the right side of the opening 14 while retracting in the direction in which the coil spring 20 is wound. .

Then, after the box 30 is coupled to the outside of the nut body 10 to loosen the lock nut, the box 30 is rotated in a direction in which the lock nut is released, as shown in FIG. 8, of the box 30. The main body 22 of the coil spring 20 is pushed simultaneously in the longitudinal direction and the lateral direction (the direction shown by the arrow) by the coupling groove 31 so that the diameter of the coil spring 20 becomes larger and wider. The coil spring 20 does not come into close contact with the threaded portion 1a of the bolt 1 even if 10 is rotated toward the release side.

Therefore, it is possible to release the lock nut by continuously rotating the box 30 in the direction in which the lock nut is released.

At this time, the box 30 is a coupling groove 31 compared to the outer diameter size of the nut body 10 in consideration of the amount of protrusion of the tip portion 22 of the coil spring 20 protruding to the outside of the nut body 10. Use a large size.

The lock nut configured as described above has a distal end portion 22 of the coil spring 20 protruding outward through the opening 14 of the nut main body 10 to couple the vox 30 to the outside of the nut main body 10 so as to be released. When rotated, the tip 22 of the coil spring 20 is pushed back so that the diameter of the coil spring 20 is enlarged so that the coil spring 20 is rotated toward the release side of the coil spring 20 so that the coil spring 20 is Since it is not in close contact with the screw portion (1a), it is easy to release the lock nut, there is an advantage that can be reused by preventing the coil spring 20 from being damaged when the lock nut is released.

In particular, the opening portion 14 extends from side to side, and the tip end portion 22 of the coil spring 20 is changed when the diameter of the coil spring 20 changes as the lock nut is coupled to or released from the bolt 1. Since it can be rotated left and right along the opening 14, there is an advantage that the constraint is not applied to the action of the coil spring (20).

In addition, the front end portion 22 of the coil spring 20 extends in a tangential direction with respect to the direction in which the coil spring 20 is wound, and is exposed to the outside of the nut body 10 through the opening 14. The spring 20 is arranged such that the front end portion 22 is biased in a direction in which the nut body 10 is rotated when the nut body 10 is released from the front center portion of the nut body 10 when it is coupled to the threaded portion 1a of the bolt 1. When the box 30 is coupled to the nut body 10 and rotated, the tip portion 22 is pushed simultaneously in the longitudinal direction and the lateral direction, so that the diameter of the coil spring 20 can be increased with a relatively small force. There is an advantage.

In addition, the enlarged diameter portion 11b has an inner diameter larger than an outer diameter of the coil spring 20 coupled to the screw portion 1a, and thus the coil spring 20 is coupled to the screw portion 1a. Since the clearance g is formed between the outer side of the 20 and the inner circumferential surface of the enlarged diameter portion 11b, the diameter of the coil spring 20 is increased by pushing the tip 22 of the coil spring 20 with the box 30. When doing this, there is an advantage that the outer surface of the coil spring 20 can reach the diameter-expansion portion (11b) to prevent the generation of a resistive force.

In addition, since the front end portion 22 of the coil spring 20 is formed in a hemispherical shape, when the box 30 is coupled to the outside of the nut main body 10, the box 30 is fastened to the front end portion 22 to be well coupled. There is an advantage that can be prevented from becoming.

In the present embodiment, when the nut main body 10 is released, the box 30 is coupled to the nut main body 10 so that the tip 22 of the coil spring 20 is pushed back by the box 30. Although illustrated, if necessary, it is also possible to couple the ranch or spanner to the nut body 10 so as to push the end portion 22 of the coil spring 20 to retreat.

In addition, as shown in FIG. 9, the nut bolt 10 is formed by forming a projection 32 in which the front end portion 22 of the coil spring 20 is engaged within the coupling hole 31 of the box 30. When disengaging, it is also possible to prevent the tip portion 22 from slipping on the projection 32.

1 is an exploded perspective view showing a conventional lock nut,

Figure 2 is a side cross-sectional view showing a coupling state of a conventional lock nut,

3 is a perspective view showing a lock nut according to the present invention;

4 is an exploded perspective view showing a lock nut according to the present invention;

Figure 5 is a side cross-sectional view showing a coupling state of the lock nut according to the present invention,

6 is a cross-sectional view showing a lock nut according to the present invention;

7 and 8 are reference diagrams for explaining the operation of the lock nut according to the present invention,

9 is a reference diagram showing another embodiment of the lock nut according to the present invention.

Claims (3)

The nut main body 10 formed so that the coupling hole 11 into which the threaded portion 1a of the bolt 1 is fitted passes through the front and rear surfaces, and the coil spring inserted into the coupling hole 11 of the nut main body 10 ( 20), the rear end 21 of the coil spring 20 is fixed to the fixing groove 13 formed in the rear of the nut body 10, the nut body 10 of the bolt (1) In the lock nut that is coupled to the threaded portion (11a), the coil spring (20) is coupled to the threaded portion (1a) to fix the nut body 10 not to rotate, An opening 14 is formed in a circumferential surface of the nut body 10, and the tip portion 22 of the coil spring 20 is inserted into the opening 14 to protrude out of the nut body 10. The opening nut 14 is extended to the left and right so that the front end portion 22 of the coil spring 20 can be rotated from side to side along the opening 14. The tip end portion 22 of the coil spring 20 extends in a tangential direction with respect to the direction in which the coil spring 20 is wound to the outside of the nut body 10 through the opening 14. When the coil spring 20 is coupled to the threaded portion 1a of the bolt 1, the tip 22 is rotated in a direction in which the nut body 10 is rotated when the nut body 10 is released from the front center of the nut body 10. Locknut, characterized in that arranged to strike. According to claim 1, The coupling hole 11 has a threaded engagement portion (11a) is engaged with the threaded portion (1a) of the bolt (1), the inner diameter is formed larger than the coupling portion (11a) is the coil spring 20 is formed of an enlarged diameter portion (11b) is inserted into the installation, the enlarged diameter portion (11b) is formed larger than the outer diameter of the coil spring 20, the inner diameter coupled to the screw portion (1a), the coil spring ( Lock nut, characterized in that the clearance g is formed between the outer circumference of the coil spring (20) and the inner circumferential surface of the enlarged diameter portion (11b) in a state that the 20 is coupled to the screw portion (1a).
KR1020090066185A 2009-07-21 2009-07-21 Lock nut KR20110008702A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020090066185A KR20110008702A (en) 2009-07-21 2009-07-21 Lock nut

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020090066185A KR20110008702A (en) 2009-07-21 2009-07-21 Lock nut

Publications (1)

Publication Number Publication Date
KR20110008702A true KR20110008702A (en) 2011-01-27

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KR1020090066185A KR20110008702A (en) 2009-07-21 2009-07-21 Lock nut

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101371025B1 (en) * 2011-09-19 2014-03-10 염복자 a nut connection apparatus
CN107269659A (en) * 2017-07-06 2017-10-20 江苏永昊高强度螺栓有限公司 High intensity locking nut
KR102004857B1 (en) * 2018-11-05 2019-07-29 주식회사 스틸네트워크 Loosening prevention nut
KR20200006345A (en) * 2018-07-10 2020-01-20 승진산업 (주) Flexible joint for sprinkler
KR102073731B1 (en) * 2018-11-19 2020-02-05 (주)바이브록 Hybrid protection cap using lock spring
KR102289856B1 (en) * 2020-07-17 2021-08-13 문상열 Anti-releasing nut
KR102289855B1 (en) * 2020-09-08 2021-08-13 문상열 Anti-releasing nut
KR102289859B1 (en) * 2020-05-26 2021-08-13 문상열 Anti-releasing nut

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101371025B1 (en) * 2011-09-19 2014-03-10 염복자 a nut connection apparatus
CN107269659A (en) * 2017-07-06 2017-10-20 江苏永昊高强度螺栓有限公司 High intensity locking nut
KR20200006345A (en) * 2018-07-10 2020-01-20 승진산업 (주) Flexible joint for sprinkler
KR102004857B1 (en) * 2018-11-05 2019-07-29 주식회사 스틸네트워크 Loosening prevention nut
KR102073731B1 (en) * 2018-11-19 2020-02-05 (주)바이브록 Hybrid protection cap using lock spring
KR102289859B1 (en) * 2020-05-26 2021-08-13 문상열 Anti-releasing nut
WO2021241984A1 (en) * 2020-05-26 2021-12-02 문상열 Anti-loosening nut
KR102289856B1 (en) * 2020-07-17 2021-08-13 문상열 Anti-releasing nut
KR102289855B1 (en) * 2020-09-08 2021-08-13 문상열 Anti-releasing nut

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