KR20160129450A - A bolt and nut having unscrew preventing function - Google Patents

A bolt and nut having unscrew preventing function Download PDF

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Publication number
KR20160129450A
KR20160129450A KR1020150061635A KR20150061635A KR20160129450A KR 20160129450 A KR20160129450 A KR 20160129450A KR 1020150061635 A KR1020150061635 A KR 1020150061635A KR 20150061635 A KR20150061635 A KR 20150061635A KR 20160129450 A KR20160129450 A KR 20160129450A
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KR
South Korea
Prior art keywords
thread
nut
bolt
angle
spiral
Prior art date
Application number
KR1020150061635A
Other languages
Korean (ko)
Inventor
임영우
Original Assignee
주식회사 임진에스티
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 주식회사 임진에스티 filed Critical 주식회사 임진에스티
Priority to KR1020150061635A priority Critical patent/KR20160129450A/en
Publication of KR20160129450A publication Critical patent/KR20160129450A/en

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    • 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
    • F16B39/30—Locking exclusively by special shape of the screw-thread
    • 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
    • F16B33/00—Features common to bolt and nut
    • F16B33/002—Means for preventing rotation of screw-threaded elements
    • 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
    • F16B33/00—Features common to bolt and nut
    • F16B33/02—Shape of thread; Special thread-forms

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bolt and a nut having an anti-loosening function, and more particularly to a bolt and a nut having a loosening preventing function that prevents the nut from being loosened from a bolt when a bolt and a nut are screwed together,
A bolt 200 having a spiral shaft 210 with a thread 220 at its outer periphery and a head 210a;
In forming the nut 300 having the screw thread 320 at the periphery of the screw hole 310 so that the screw shaft can be screwed,
One of the threads 220 and 320 forming the spiral shaft 210 or the spiral hole 310 has the same angle and the other thread angle is formed differently so that the angle of inclination So that it is possible to make the surface contact with the same thread portion with the point contact as a starting point.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a bolt and a nut,

The present invention relates to a bolt and a nut having an anti-loosening function, and more particularly, to a bolt and a nut having an anti-loosening function such that the nut is not loosened from the bolt when the bolt and the nut are screwed together.

Generally, bolts and nuts are used for joining two objects, which are usually separated by two or more, in various fields such as assembly of electric vehicles and automobile accessories, assembly of electronic parts, assembly of furniture and assembly of structures at a construction site It is widely used.

1, the bolts and the nuts are screwed into the threaded holes 11a formed on the outer periphery of the spiral shaft 11 of the bolt 10 and the threads 11a formed on the periphery of the spiral holes 21 of the nut 20, (21a) are aligned at the same angle.

That is, the spiral shaft 11 exposed to the outside of the structure in a state where the spiral shaft 11 of the bolt 10 passes through the through hole 1a of the structure 1 is inserted into the spiral shaft 11 of the nut 20, The threaded shaft 11 and the screw 11a provided in the helical hole 21 as shown in FIG. 2A, until the nut 20 contacts the structure 1, And 21a are spaced apart from each other by a predetermined distance. In this state, when the bolt and the nut are continuously screwed together, one surface of the nut 20 is brought into contact with the structure 1.

The head 12 of the bolt 10 is in a state of being face-contacted on one surface of the structure 1 and the nut 20 is in the state of being in contact with the surface of the structure 1 as shown in FIG. A force for pulling the spiral shaft 11 in the direction of the arrow is generated as the spiral shaft is fastened in the state where the other surface of the structure 1 is face-contacted with the spiral shaft 11, The threads 11a and 21a are in a state of being face-to-face bonded to each other, so that the fastening is completed.

At this time, the thread engagement forces of the threads 11a and 21a are applied differently according to the force of the user.

However, in the above-described fastening state, the fastening and fixing are performed in a state where the threads of the bolt and one side of the nut of the nut are not in face-to-face contact, and when the external impact is applied, the fastening occurs due to impact and vibration will be.

In order to solve this problem, many kinds of nuts or bolts having an anti-loosening function have been introduced and used.

For example, the applicant of the present invention has also been introduced and is now being used in the patent registration No. 902061 (power clutch nut) and patent registration No. 1163487 (sealer lock nut) developed and registered by the inventor of the present invention.

Such an anti-loosening nut or bolt may have other structural changes such as a spring or the like for holding the threads of the bolts and nuts that have been used, It is a fact that it is possible to make a close conclusion.

However, since the nut or bolt having the anti-loosening function giving different structural changes to the bolt and the nut as described above is good in the loosening prevention function, it is configured to have the accessories such as the spring in the inside of the nut, This, of course, leads to a decrease in productivity, which in turn leads to increased production costs.

Therefore, according to the present invention, any one of threads of a bolt or a nut is not fastened by a spacer but can be fastened by point contact so that loosening does not occur due to external vibration or impact. .

In addition, the present invention aims to provide a bolt and a nut that can be point-contacted by changing only the shape of a thread in a conventionally used configuration, thereby improving the productivity and lowering the production cost .

In order to achieve the above object, the present invention provides a bolt having a spiral shaft and a head having a thread at an outer periphery;

In forming a nut having a screw thread at the periphery of the screw hole so that the screw shaft can be screwed,

One of the threads forming the spiral shaft or the spiral hole is formed to have the same angle and the other thread angle is formed differently so that the screw thread having the same angle of inclination provided on the thread having different angles has the point contact So that a one-side contact can be fastened.

The angle of the one side surface of the screw thread provided on the helical axis is set to be smaller than the angle of the other side surface with the mountain as a starting point so that the mountain of the helical axis is in point contact with one thread surface of the helical hole, So that a part of the threaded portion having the threaded portion can be tightly tightened.

In addition, it is also possible to form the screw thread of the helical hole so that the angle of one surface is smaller than the angle of the other surface, starting from the valley as a base point, So that the threaded fastening can be performed in a state in which a part of the threaded portion is closely adhered.

In addition, a projecting protrusion is provided on the inner side of the screw thread having a small angle, so that when the screw thread contact is made simultaneously with the point contact with the starting point of the mountain portion, contact can be made by point contact to the inner side by the projecting projection It is characterized by.

The screw thread of the spiral shaft is screwed by the thread of the spiral shaft so that the screw thread of the spiral shaft is perpendicular to one side of the screw shaft and the other side is inclined. And an acid of the spiral axis is made to come into contact with the spiral with point contact by using the acid as a starting point.

Further, the thread of the spiral shaft can be formed within a range of about 46 to 50 degrees from the vertical slope starting from the mountain, and the thread of the spiral hole can be formed such that the acid of the spiral shaft can make point contact And has an inclination angle.

Further, the inclination angle of the screw of the helical hole is formed within a range of about 3 to 5 degrees from the vertical plane starting from the mountain of the helical axis as a starting point.

The present invention is characterized in that the threaded portion of one thread among the threaded portions of the threads when the threads are screwed together by the respective threaded portions of the helical axis of the bolt and the helical holes of the nut are pressed against the other thread by the point contact force and the contact contact force The bolt and the nut can be tightly and firmly fastened together, so that even if shock and vibration are generated from the outside, they are not easily released.

1 is an exemplary view showing a state in which a bolt and a nut are fastened together.
Fig. 2 is an enlarged view of part A of Fig. 1,
FIG. 2A is a state in which a bolt and a nut are fastened together and before the nut is brought into contact with the structure. FIG.
FIG. 2B is a state in which a bolt and a nut are screwed together, and the nut is in contact with the structure.
FIG. 3 is a view illustrating an engaged state of a bolt and a nut for explaining the present invention,
3A is a state in which a bolt and a nut are not fastened.
FIG. 3B is a state in which a bolt and a nut are fastened together. FIG.
4 is a partially enlarged view showing a state in which a bolt and a nut are separated from each other in a state where the present invention is applied.
5 is a cross-sectional view showing the fastening state of the present invention,
5A is a state in which a bolt and a nut are fastened together.
Fig. 5b is a state in which the nut is grounded on the structure when the bolt and the nut are fastened.
6 is a partially enlarged view showing a state in which a bolt and a nut are separated from each other according to a first embodiment of the present invention;
7 is a cross-sectional view showing another first embodiment of the present invention,
7A is a state in which a bolt and a nut are fastened.
FIG. 7B is a state in which the nut is connected to the structure when the bolt and the nut are fastened.
8 is a cross-sectional view showing another embodiment of the present invention,
8A is a state before the bolt and the nut are fastened.
8B is a state in which a bolt and a nut are fastened together.
9 is a cross-sectional view of a third embodiment of the present invention,
9A is a state before the bolt and the nut are fastened.
FIG. 9B is a state in which a bolt and a nut are fastened together. FIG.
10 is a cross-sectional view showing another fourth embodiment of the present invention,
10A is a state in which a bolt and a nut are fastened together.
109b is a state in which the bolt and nut are tightened.
11 is an enlarged cross-sectional view showing a configuration of a fourth embodiment of the present invention.

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

FIG. 3 is a view of a structure in which a structure is fastened and fixed by bolts and nuts in order to explain an embodiment of the present invention. In the structure in which at least two structures 1 are overlapped with each other, The spiral shaft 210 passing through the through hole 110 of the structure 100 is inserted into the spiral hole 310 of the nut 300 in such a state that the spiral shaft 210 of the bolt 200 passes through the through hole 110 of the structure 100, So that the screw is tightened.

The outer periphery of the spiral shaft 210 and the spiral hole 310 are provided with threads 220a and 320a and teeth 220b and 320b, .

At this time, it is possible to perform the screw engagement by the surface contact based on the point contact of the mountain portion provided on one of the threads 220 and 320.

In the present invention, the spiral shaft 210 or the spiral hole 310 (or the spiral hole 310) may be formed at the same angle as the threads 220a and 320a and the valleys 220b and 320b. The screw threads of the threads 220 and 320 are formed to have the same angle and the thread angles of the other threads are different from each other so that the screw threads having different angles have different angles. So that the surface contact can be tightened.

4, an angle 230a of one side of the thread 220 provided on the spiral shaft 210 is set to be smaller than an angle 230b of the other side with the mountain 220a as a starting point A portion of the thread 220 having a small angle 230a is formed in a state in which the mountain 220a of the spiral shaft 210 is in point contact with one surface of the thread 320 of the spiral hole 310, So that the threaded fastening can be performed.

5A shows a state before the nut 300 is earthed to the structure 100 in a state where the helical shaft 210 and the helical hole 320 are engaged with each other, As shown in the drawing, when the threads 300 and 220 are not in contact with each other, they are tightened. In this state, when the screw 300 is continuously screwed, A phenomenon in which a thread portion having a small angle 230a among the threads 220 tends to be engaged with a thread portion 320 of the spiral hole 310 as shown in FIG. 5B, The thread 220 of the portion 210 has a small angle 230a different from the angle of the other threads so that the threads 220 and 320 are not in surface contact with each other, The contact state is do.

In this state, when the bolts 200 are continuously screwed together, the bolts 200 are in a state in which they are screwed in a state in which the head 210a of the bolt 200 and the nut 300 are in contact with the corresponding surfaces of the structure 100 As a result, a force is generated in which the spiral shaft 210 and the nut 300 are pulled in the direction of the arrow with the structure 100 as a starting point, so that the mountain 220a of the spiral shaft 210 is pulled out of the spiral hole 310 Tight point contact is made to the thread 320 and at the same time a part of the thread 220 is closely attached to the thread 320 with the mountain 220a as a starting point so that the thread 220 is tightly and firmly fastened. The spiral shaft 210 and the spiral hole 310 are not easily loosened even when shock and vibration occur.

6, the angles of the threads 220 provided on the spiral shaft 210 are the same, and the troughs 320b of the threads 320 of the spiral holes 310 The point of contact of the mountain 320a with the thread 220 of the spiral shaft 210 is set as a starting point so that the angle 330a of one side is smaller than the angle 330b of the other side So that a part of the threaded portion 320 having the small angle 330a can be tightened tightly.

As shown in FIG. 7A, in the state of the fastening of the first embodiment as described above, the threads 300 and 220 are separated from each other as shown in FIG. 7A. In this state, The thread 320a of the thread 320 having a small angle from the trough 320b of the thread 320 of the nut 300 as shown in FIG. The threaded shaft 210 of the nut 300 is brought into point contact with the threaded shaft 210. When the threaded fastening is continued in the above state, And a part of the thread 320 is brought into surface contact with the thread 220 of the spiral shaft 210 with the mountain 320a as a starting point, .

As shown in FIG. 8, in the second embodiment of the present invention, the thread 220 of the spiral shaft 210 has a small angle 230a starting from the mountain 220a, A third protruding protrusion 230 may be formed in the third protrusion 230. As shown in FIG. 9, a third protrusion protrusion 230 may be formed in the thread 320 of the spiral hole 310 of the nut, The protrusion protrusion 330 may be formed on the inner portion of the thread 320 having the angle 330a.

Another such second embodiment is such that the portion of the thread 220 having a small angle 230a of the spiral axis 210 causes the point of contact of the mountain 220a with the thread 320 of the spiral hole 310 The protrusion protrusion 230 provided inside the thread 220 of the spiral shaft is brought into point contact with the thread 320 of the spiral hole 310. In the third embodiment, The mountain 320a of the thread 320 having a small angle from the trough 320b of the thread 320 provided in the hole 310 is in point contact with the thread 220 of the spiral shaft 210 The protrusions 330 provided on the inner side of the thread 320 are brought into point contact with the thread 220 of the spiral shaft 210 so that the spiral shaft 210 and the spiral So that the fastening force of the ball 310 can be further increased.

10, the thread 220 of the spiral shaft 210 is formed such that one side is perpendicular and the other side is inclined with respect to the arc 220a as shown in FIG. 10, The thread 320 of the spiral hole 310 in which the spiral shaft 210 is screwed is helically fastened by the thread 220 of the spiral shaft 210, So that the peak 220a of the pin 210 can be screwed by point contact.

At this time, the thread 220 of the spiral shaft 210 may be formed in a range of about 46 to 50 degrees from the vertical slope starting from the mountain 220a as shown in FIG. 11 , It may be desirable that the thread 320 of the spiral hole 310 has a tilt angle such that the peak 220a of the spiral axis 210 can be point-contacted.

The inclination angle of the thread 320 of the helical hole 310 may be formed within a range of about 3 to 5 degrees from a vertical plane starting from the mountain 220a of the helical axis 210 as a starting point.

In the third embodiment of the present invention as described above, when the spiral shaft 210 and the spiral hole 310 are coupled to each other, the mountain 220a of the spiral shaft 210 is inserted into the screw hole 310 of the spiral hole 310 320 are screwed by face friction starting from point contact.

100: Structure 110: Through-hole
200: bolt 210: spiral shaft
210a: head portion 220: helical surface
220a: Mountain 220b: Goal
230: projecting projection 300: nut
310: Spiral hole 320: Spiral surface
320a: Mountain 320b: Goal
330: protrusion projection

Claims (7)

A bolt (200) having a spiral shaft (210) with a thread (220) at its outer periphery and a head (210a);
In forming the nut 300 having the screw thread 320 at the periphery of the screw hole 310 so that the screw shaft can be screwed,
One of the threads 220 and 320 forming the spiral shaft 210 or the spiral hole 310 has the same angle and the other thread angle is formed differently so that the angle of inclination Wherein the bolt and nut have an anti-loosening function such that a face contact can be made on the same thread portion with point contact as a starting point. The method according to claim 1,
The angle 230a of one side of the thread 220 provided on the spiral shaft 210 is set to be smaller than the angle 230b of the other side with the mountain 220a as a starting point, A part of the thread 220 having a small angle 230a is closely contacted with the mountain 220a in a point contact state with one side of the thread 320 of the screw hole 310, The bolt having an anti-loosening function. The method according to claim 1,
An angle 330a of one side of the thread 320 of the spiral hole 310 is set to be smaller than an angle 330b of the other side of the thread 320b starting from the valley 320b, And a part of the thread 320 having the small angle 330a is closely contacted with the thread 220 of the shaft 210 as a starting point. Nuts with anti-loosening function. 4. The method of any one of claims 2 or 3,
The protrusions 230 and 330 are provided on the inside of the threads 220 and 320 having a small angle so that when the surface contact of the threads is made simultaneously with the point contact with the starting point as the starting point, And a bolt and a nut having an anti-loosening function. The method according to claim 1,
The thread 220 of the spiral shaft 210 is formed so as to be perpendicular to one side of the base 220a and to have an inclination angle of the other side of the spiral shaft 210. The spiral shaft 210 has a spiral hole The thread 320 of the spiral shaft 210 is screwed by the thread 220 of the spiral shaft 210 so that the mountain 220a of the spiral shaft 210 starts from the point of contact with the spiral shaft 210, And a bolt and a nut having an anti-loosening function. 6. The method of claim 5,
The thread 220 of the spiral shaft 210 may be formed in a range of about 46 to 50 degrees from the vertical slope starting from the mountain 220a as shown in FIG. 10, Wherein the thread (320) of the ball (310) has a tilt angle such that the peak (220a) of the spiral shaft (210) can be point contacted. The method according to claim 6,
Wherein an inclination angle of the thread 320 of the helical hole 310 is formed within a range of about 3 to 5 degrees from a vertical plane starting from the mountain 220a of the helical axis 210 as a starting point. Bolts and nuts with protection.
KR1020150061635A 2015-04-30 2015-04-30 A bolt and nut having unscrew preventing function KR20160129450A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150061635A KR20160129450A (en) 2015-04-30 2015-04-30 A bolt and nut having unscrew preventing function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150061635A KR20160129450A (en) 2015-04-30 2015-04-30 A bolt and nut having unscrew preventing function

Publications (1)

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KR20160129450A true KR20160129450A (en) 2016-11-09

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109989981A (en) * 2018-04-07 2019-07-09 玉环胜友工具有限公司 The connection structure of class olive-shaped symmetrical two-way tapered thread external screw thread and conventional threads
WO2019192573A1 (en) * 2018-04-07 2019-10-10 玉环胜友工具有限公司 Connection structure of internal thread and traditional thread with symmetrical bidirectional conical thread having dumbbell-like shape
KR20230001223A (en) 2021-06-28 2023-01-04 주식회사 대한볼트 Bolts and nuts with anti-loosening function

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109989981A (en) * 2018-04-07 2019-07-09 玉环胜友工具有限公司 The connection structure of class olive-shaped symmetrical two-way tapered thread external screw thread and conventional threads
WO2019192573A1 (en) * 2018-04-07 2019-10-10 玉环胜友工具有限公司 Connection structure of internal thread and traditional thread with symmetrical bidirectional conical thread having dumbbell-like shape
WO2019192558A1 (en) * 2018-04-07 2019-10-10 游奕华 Connection structure of traditional thread and external thread of thread outlining symmetrically and bidirectionally tapered olivary shape
KR20230001223A (en) 2021-06-28 2023-01-04 주식회사 대한볼트 Bolts and nuts with anti-loosening function

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