KR20150104860A

KR20150104860A - Saperlock nut

Info

Publication number: KR20150104860A
Application number: KR1020140026753A
Authority: KR
Inventors: 임영우
Original assignee: 한국전력기술 주식회사; 임영우; 주식회사 씨비피
Priority date: 2014-03-06
Filing date: 2014-03-06
Publication date: 2015-09-16

Abstract

The present invention relates to a safe lock nut to prevent a nut coupled to a spiral shaft of a bolt from being arbitrarily released and, more specifically, to a safe lock nut which is an invention of improvement for patent registration 10-1163487 registered by an applicant of the present invention. The safe lock nut comprises a nut (300) and a coil spring (400). The nut comprises: a hexagonal nut part (310) having a spiral hole (320) from the lower part; a circular nut part (330) having a recessed part (340) with a greater inner diameter than the inner diameter of the spiral hole; a wound part (350) having a stepped surface (360) formed on the top surface of the recessed part; and a guide slot (370) formed in the bottom of the circular nut part to communicate with the recessed part. The coil spring comprises: a coil part (410) positioned inside the recessed part to surround the spiral shaft; a top coil part (430) fixed while being wound by a winding surface while being extended from the top of the coil part and then placed on the stepped surface. The guide slot (370) is extended from one side edge (312a) of one surface (311a) of the hexagonal nut part to another surface (311b) extended from the other edge thereof. A second extension part straightly extended from the bottom of the coil part (410) is formed. A curved part is extended from the front end of the second extension part while being curved into a round shape.

Description

Seaper lock nut {SAPERLOCK NUT}

The present invention relates to a shutter lock nut for preventing a nut fastened to a spiral shaft of a bolt from being disengaged arbitrarily, and more particularly to an improved invention of a patent registration No. 10-1163487 already developed and registered by the applicant of the present invention.

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.

As described above, the simple fastening structure of the bolt and the nut has a disadvantage that the fastening force is weakened by external shock or vibration.

That is, since the screw shaft of the bolt is only fastened to the screw hole formed in the nut, when vibration or impact is applied from the outside during use, the nut fastened to the screw shaft is loosely disengaged, In the case of severe failure, the bolts and nuts are completely loosened and the structure is broken down and the breakage and collapse are occurred.

As described above, in order to prevent the occurrence of loosening even when an external impact or vibration occurs, the nut that is threaded on the spiral shaft of the bolt can be used in a state without any risk of a safety accident. It has developed a loosening prevention nut and has been used until now.

Among the various anti-loose nuts described above, Patent Registration No. 10-1163487 (seal lock nut) developed and registered by the applicant of the present invention has been introduced and is currently in use.

Accordingly, the present invention is intended to further improve the function of the prior-art patent registration No. 10-1163487 (safer lock nut), which is pre-registered, so that it can be used and handled conveniently.

In order to achieve the above object, the present invention provides a hexagonal nut comprising a hexagonal nut portion having a helical hole with a lower portion as a starting point, a circular nut portion having a recessed portion having an inner diameter larger than the inner diameter of the helical hole, A nut having a spiral part and a guide slot communicating with the recessed part at a lower end side of the circular nut part;

An upper end coil portion that is fixed in a state of being wound by a winding surface extending in an upper end of the coil portion and in a state of being positioned on a stepped surface; Wherein a portion of the shaper lock nut is formed of a coil spring in a state of being exposed to the outside through a guide slot,

Wherein the guide elongate member extends from one side of one side of the hexagonal nut portion to another side extending from the opposite corner and forms a second extended portion straightly extending from the lower end of the coil portion, And a bending curve portion extending in a curved shape in a round shape at the tip of the two extension portion.

The other side surface of the guide slot formed on one side of the hexagonal nut portion on one side is positioned at an intermediate point of the other side of the hexagonal nut portion.

The coil spring may further include a first extending portion extending in a straight line between the coil portion and the upper coil portion extending from the upper end of the coil portion.

In order to prevent unwinding of a spiral shaft fastened to a nut, the spiral shaft is wrapped around the outer periphery of the spiral shaft and has a second extended portion in a straight line at an end portion of a coil spring for holding the spiral shaft by its own tension, The second extending portion is pushed rearward in a straight line state so that the coil portion surrounding the spiral shaft can be easily separated from the spiral shaft so that the spiral shaft can be easily released without damaging the spiral shaft And the tip of the second extended portion of the straight line forms a curved bent portion formed by bending in a round shape so that when the socket is covered with the circular nut portion of the nut in order to release the nut and bolt, As the bending curve part is placed in a tight and stable position in the lapped groove, And the coil spring can be easily separated from the spiral shaft.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view showing a structure of a shutter lock nut according to the present invention. FIG.
Fig. 2 is a cross-sectional view showing the construction of a shutter lock nut according to the present invention,
2A is a state before the coil spring is engaged with the nut.
FIG. 2B is a state in which the coil spring is assembled to the nut. FIG.
Fig. 2c is a state in which the spiral shaft is fastened with the coil spring assembled to the nut. Fig.
Fig. 3 is a front view of the shutter lock nut according to the present invention,
FIG. 3A is a state before a spiral shaft is screwed into a nut. FIG.
FIG. 3b is a state in which the circular nut portion of the nut is inserted into the socket in a state where the spiral shaft is fastened to the nut.
Fig. 3c is a state in which the coil spring is released by the socket;
Fig. 4 is a plan sectional view of a shutter lock nut according to the present invention,
FIG. 4A is a state before a spiral shaft is screwed into a nut. FIG.
FIG. 4B is a state in which the circular nut portion of the nut is inserted into the socket in a state where the spiral shaft is fastened to the nut.
4C is a state in which the coil spring is uncoiled by the socket.
5 is an exploded perspective view showing another embodiment of the present invention.
6 is a side cross-sectional view illustrating another embodiment of the present invention.

Hereinafter, the configuration of an embodiment of the present invention will be described with reference to the accompanying drawings.

Fig. 1 is an exploded perspective view showing the construction of the present invention. Fig. 2 is a cross-sectional view showing the construction of the present invention. In the shear locknut 100 of the present invention, the spiral shaft 210 of the bolt 200 penetrates And a coil spring 400 that tightly holds the outer periphery of the spiral shaft of the bolt passing through the nut in a state where the nut 300 is tightly held in the nut.

The nut 300 has a hexagonal nut part 310 having a hexagonal outer circumferential surface and a spiral hole 320 through which a spiral shaft 210 of the bolt 200 can be fastened, A circular nut portion 330 having an outer periphery of a circular shape and an inner portion having a relatively larger inner diameter than a helical hole and a circular nut portion 330 formed on the upper surface of the concave portion 340 of the circular nut portion, A spiral part 350 having a stepped surface 360 so as to be wrapped in a state where the upper coil part of the spring is placed on the lower end part of the coil nut 400 and a recessed part 340 at the lower end side of the circular nut part, And a guide slot 370 for allowing the guide plate 370 to move freely.

At this time, the guide slot 370 is formed such that one side is positioned at least on the same line as the one side 312a starting from the one side 311a of the hexagonal nut 310, and the other side is positioned on the opposite side At least one-half of the first surface 311b extending from the first surface 312b as a starting point.

The coil spring 400 includes a plurality of coil parts 410 which are inserted into the concave part 340 of the circular nut part 330 so as to cover the spiral shaft 210 of the bolt, A first extension part 420 extending vertically from an end of the first extension part 420 and an upper end part 420 extending from the end of the first extension part to have an outer diameter slightly larger than the outer diameter of the coil part, A second extending portion 440 extending vertically from the lower end of the coil portion and a distal end portion extending from the end of the second extending portion so as to be rounded, And a bending curve 450 protruding outward through the bending curved portion 450.

In this case, the outer diameter of the coil part is spaced apart from the inner circumference of the recessed part 340 at a predetermined distance, and the second extended part 440 has a clearance enough to allow the coil part to spread outward, It is preferable that the end of the second extension portion is formed so as to extend at least through the edge 312b of the first surface 311a of the hexagonal nut portion 310 .

2A, before the coil spring 400 is positioned in the recessed portion 340 of the nut 300, the serrated lock nut 350 of the present invention having the above- State.

2B, the coil spring 400 is inserted into the concave portion 340 of the nut 300, and a bending curve portion (not shown) provided at the lower end of the coil portion 410 of the coil spring And the upper coil part 430 is placed on the step surface 360 while the lower coil part 450 is positioned on the guide slot 370 and the upper coil part 430 is positioned on the lower step part 360, So that the reduction surface is fixedly coupled with the upper end coil part 430 of the coil spring resting on the step surface 360 so that the forming of the nut 100 is completed.

In this state, the bolts 200 are screwed to the nut 300. First, as shown in FIG. 3A and FIG. 4A, the coil spring 400 has an upper coil part 430 located at the upper end, The second extended portion 440 at the lower end is fixed only in the state of being located in the guide slot 370 by the tension force of its own, The inner diameter of the coil section 410 is slightly smaller than the inner diameter of the spiral hole 320 due to the tightening force of the coil section 410 and the outer diameter of the coil section 410 is The distal end portion of the second extended portion 440 is located at the upper end portion at least at the intermediate point in the guide elongated hole 370, The edge 450 of the hexagonal nut 310 has the edge 312b of the first surface 311a, Beyond it is possible to maintain the state in the other side of the first surface (311b).

In this state, the bolt spiral shaft 210 is fastened to the spiral hole 320 through the lower end of the nut 300. The tip end portion of the spiral shaft 210 passing through the spiral hole 320 The spiral shaft 210 is brought into contact with the lowermost end portion of the coil section 410 located in the concave section 340. When the spiral shaft 210 is continuously rotated in this state, The inner circumferential portion of the coil portion 410 is wound on the helical groove of the helical axis 210 while the end portion of the coil portion 410 is aligned with the end portion of the coil portion 410. At this time, The coil part 410 wound on the spiral shaft 210 is wound in a state in which it is forced to fit the outer diameter of the spiral shaft 210. Therefore,

Therefore, as the coil part 410 wound around the outer periphery of the spiral shaft 210 is forced to coincide with the outer diameter of the spiral shaft, a force for returning to the original state is generated due to the self-tensioning force of the coil part 410, The outer circumferential edge of the shaft 210 is strongly wound.

As described above, since the coil part 410 is forcedly wound around the helical spiral 210, the coil part 410 maintains a gap between the spiral shaft and the helical valley of the spiral shaft. The upper end portion 430 of the coil portion 410 is fixed by the winding surface 350 so that the lower end portion of the coil portion 410 which is not fixed is caused to extend downward, The bending curve surface 450 is positioned on the lower side starting from the intermediate point of the guide slot 370 as shown in FIG.

The coil spring 400 located in the concave portion 340 surrounds the outer circumference of the spiral shaft 210 while the spiral shaft 210 is fastened to the spiral hole 320 of the nut 300, The bolt 200 is held in a state of tightly holding the spiral shaft 210 by the tightening force of the self-tensioning force of the coil spring 400, The bolts and the nuts are not loosened, so that it is possible to use them safely.

In order to release the bolts and nuts that have been fastened in the above-described state, the bolts and nuts that have been fastened can be loosened by using a socket 510 which is a generally used loosening means 500.

The socket 510, which is the releasing means 500, is mounted on a bolt having a hexagonal or 12-angled shape and can be released easily. A socket having a hexagonal or 12-angled shape widely used in the market is used as it is will be.

That is, as shown in FIGS. 3B and 4B, the covering groove portion 520 of the socket 510 is covered by the circular nut portion 330. At this time, the covering groove portion 520 of the socket 510 is provided between the covering groove portions 520 having the hexagonal shape The bent curved portion 450 of the coil spring 400 is positioned in one of the recessed groove portions 530 of the recessed recessed portions 530. [

When the covering groove portion 520 of the socket 510 is covered with the circular nut portion 330 with the bending curve portion 450 positioned in the recessed groove portion 530 as described above, A hexagonal nut part 310 integrally formed at the lower end of the circular nut part 330 and having an inclined surface 530 part provided at the lower end of the covering groove part, So that the cover groove 520 of the socket 500 is in a state of covering only the circular nut part 330. As a result,

In this state, if the bolt 200 and the socket 510 are rotated in the direction opposite to each other in the direction in which the bolt is unwound, the rotation of the bolt 200 and the socket 510 causes the recesses of the socket 510 as shown in FIGS. 3C and 4C The bending curve portion 450 of the coil spring 400 hung on the groove portion 530 is forcibly moved in the right direction of the guide elongated hole 370 in the direction in which the helical axis is released, The second extension portion 440, which extends straightly between the bending curve portion 450 and the coil portion 410 due to the movement, is pushed rearward in a straight state to cover the outer periphery of the spiral shaft 210 The coil part 410 can be easily separated from the spiral shaft 210.

When the socket 510 is rotated as described above, the cover groove 520 having a hexagonal shape and the hexagonal nut 310 are aligned as shown in FIG. 3C. In this state, The cover groove 520 covers the hexagonal nut 310 as shown in FIG.

When the bolt 200 and the socket 510 are rotated in the direction of unwinding the spiral shaft 210 with the nut 300 in a state where the coil part 410 is separated from the spiral shaft 210 as described above, And the shaft 210 is loosened from the nut 300 easily.

5 and 6, the upper coil part 400 of the coil spring 400 is mounted on the circular nut part 330 and the upper coil part 400 And a seating groove 380 for allowing the seat 430 to be seated in a state in which the upper coil portion 430 of the coil spring 430 is inserted into the recessed portion 390, 430 may be fitted to the incision so as to be fixed.

200: bolt 210: spiral shaft
300: nut 310: hexagonal nut part
311a, 311b: first side 312a, 312b: corner
320: spiral ball 330: circular nut part
340: Entrance area 350: Depressed area
360: Short step 370:
400: coil spring 410: coil part
420: first extension part 430: upper end coil part
440: second extension part 450: bending curve part

Claims

A hexagonal nut portion 310 having a helical hole 320 with a lower portion as a starting point; a circular nut portion 330 having a recessed portion 340 having an inner diameter larger than an inner diameter of the helical hole; A nut 300 having a winding portion 350 having a stepped surface 360 and a guide elongated hole 370 communicating with a concave portion at a lower end side of the circular nut portion;
An upper coil part 430 extending in the upper end of the coil part and fixed in a winding state by being wound in a state where the coil part is placed on the lower end of the coil part, A lower end portion of the coil portion is formed with a coil spring 400 that is exposed to the outside through a guide slot,
The guide elongated hole 370 is extended to one side 311b of the hexagonal nut 311a and another side 311b of the hexagonal nut 311b extending from the opposite corner of the hexagonal nut 311a, Wherein the second extending portion is formed as a curved portion extending in a curved shape at the tip of the second extending portion.

The method according to claim 1,
The other side of the guide slot 370 whose one side is formed from the edge 312a of the one side 311a of the hexagonal nut 310 is positioned at a point at which it is an intermediate abnormality of the other side 312a Wherein said seal nut is made of a metal.

The method according to claim 1,
The first coil spring 400 may include a coil portion 410 and a first extension portion 420 extending in a straight line between the upper coil portion 430 and the upper coil portion 430, Features a serpent lock nut.