WO2015064863A1

WO2015064863A1 - Lock nut assembly and lock bolt assembly

Info

Publication number: WO2015064863A1
Application number: PCT/KR2014/003301
Authority: WO
Inventors: 길병모
Original assignee: 길병모
Priority date: 2013-10-28
Filing date: 2014-04-16
Publication date: 2015-05-07

Abstract

The present invention relates to a lock nut assembly and a lock bolt assembly and, more particularly, to a lock nut assembly and a lock bolt assembly that employs one nut and allows the nut to be firmly coupled to a bolt without being loosened from the bolt.

Description

Lock Nut Assembly and Lock Bolt Assembly

TECHNICAL FIELD The present invention relates to a lock nut assembly and a lock bolt assembly, and more particularly, to a lock nut assembly and a lock bolt assembly that allow a nut to be tightly coupled so as not to loosen from a bolt using one nut.

Conventionally, the loosening lock nut which prevents a tightening nut from loosening is proposed. For example, the anti-locking lock nut described in Japanese Laid-Open Utility Model No. 1973-29257 is composed of an upper nut and a lower nut screwed to a bolt, and the upper and lower nuts are coupled to overlap each other. The tapered-state convex portions and concave portions are formed. The center of either the convex portion or the concave portion is formed to be slightly eccentric with respect to the axial line of the tightening bolt. Thus, when the upper and lower nuts are tightly tightened, the convex portion and the recessed portion are in contact with each other to generate radial shear force about the screw axis, and the nut is firmly coupled to the bolt, thereby preventing the nut from loosening. It is.

Moreover, since the contact part protrudes in the lower position of the side surface of an upper nut, and tightens it tightly to this contact part, the anti-locking lock nut of Unexamined-Japanese-Patent No. 2002-195236 prevents idle rotation of a lower nut. At the same time, the amount of rotation of the upper nut can be grasped by the position of the contact portion.

In other words, the above-described prior art documents induce the bolt and nut to be eccentrically coupled so that the binding between the bolt and the nut is more firm.

The eccentric coupling nut may be used for mutually easy H-beam coupling, truss structure coupling of transmission tower, guardrail of highways, railroad coupling, and the like. It should not be loosened.

However, even with such an eccentric coupling, if a force greater than the eccentric coupling force is applied, the nut and the bolt may be loosened, and the nut may be loosened if repeated vibration or vibration is applied even if the force is not large.

In addition, such an eccentric coupling nut is required as a pair of nuts, which acts as a factor that can inhibit the unit cost reduction.

The present invention is to solve the above problems, to provide a lock nut and lock bolt that can prevent loosening even by a large force or vibration or tremor.

It is also an object of the present invention to provide a lot nut and lock bolt that can be tightly coupled with a simple structural change to prevent mutual loosening using a single nut.

The lock nut assembly according to an embodiment of the present invention includes a female screw thread to be coupled to the bolt, and extends in a coupling direction with the bolt on an inner side thereof and when the inner side is coupled to the bolt, an inner side of the lock nut in the circumferential direction. A nut having at least one inclined fixing groove so as to have a greater distance therebetween; And a cylindrical locking member provided in the coupling direction of the bolt and the nut and fitted into the fixing groove.

In addition, the lock bolt assembly according to an embodiment of the present invention has a male screw thread on the outer surface to be coupled to the nut, and extends in the coupling direction with the nut on the outer surface and the outer surface is circumferential when coupled with the nut. A bolt having at least one fixing groove inclined such that a distance from the inner surface of the nut is increased; And a cylindrical locking member provided in a coupling direction of the nut and the bolt and fitted into the fixing groove.

According to the lock nut assembly and the lock bolt assembly according to the embodiment of the present invention, the nut may be tightly coupled so that the nut does not loosen from the bolt.

By using the present invention, it is possible to provide a lock nut and a lock bolt which can prevent loosening even by a large force, vibration or vibration.

In addition, the present invention can provide a lot nut and lock bolt that can be tightly coupled with a simple structural change to prevent mutual loosening using a single nut.

1 is a perspective view showing the basic shape of the lock nut assembly according to an embodiment of the present invention,

2 is a perspective view of the lock nut assembly according to an embodiment of the present invention,

3 is an exploded perspective view of the lock nut assembly according to an embodiment of the present invention,

4 is a cross-sectional view of the lock nut assembly according to an embodiment of the present invention,

5 is a combined perspective view of the lock nut assembly according to an embodiment of the present invention,

6 is an exploded perspective view of the lock nut assembly according to an embodiment of the present invention;

7 is a cross-sectional view of the lock nut assembly according to an embodiment of the present invention,

8A to 8C are perspective views of various embodiments of a nut used in the lock nut assembly according to the present invention;

9 (a) to 9 (c) are perspective views of various embodiments of the locking member used in the lock nut assembly according to the present invention;

10a to 10c are perspective views of various embodiments of the fixing means used in the lock nut assembly according to the present invention;

11A to 11C are reference diagrams sequentially illustrating an example in which the lock nut assembly according to an embodiment of the present invention is coupled to a bolt.

12 is a perspective view showing a basic coupling shape of the lock bolt assembly according to an embodiment of the present invention,

13 is a perspective view of the lock bolt assembly and the nut in accordance with an embodiment of the present invention,

14 is an exploded perspective view of the lock bolt assembly and the nut according to an embodiment of the present invention;

15 is a cross-sectional view of the combination of the lock bolt assembly and the nut according to an embodiment of the present invention,

(A) and (b) are perspective views of an embodiment of a bolt used in the lock bolt assembly according to the present invention,

17 (a) to (c) is a perspective view of various embodiments of the locking member used in the lock bolt assembly according to the present invention,

18 (a) and (b) are perspective views of an embodiment of the fixing means 114 used in the lock bolt assembly according to the invention,

19A to 19C are reference diagrams sequentially illustrating an example in which a lock bolt assembly and a nut are coupled according to an embodiment of the present invention.

Hereinafter, with reference to the drawings will be described in detail a specific embodiment of the present invention. However, the spirit of the present invention is not limited to the embodiments presented, and those skilled in the art who understand the spirit of the present invention may deteriorate other inventions or the present invention by adding, modifying, or deleting other elements within the scope of the same idea. Other embodiments that fall within the scope of the invention may be easily proposed, but it will also be included within the scope of the invention.

In addition, in describing the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

When defining the term for the direction, the length direction in the embodiment of the present invention may mean the direction of the coupling while moving the longitudinal direction of the bolt, that is, when the bolt and nut are coupled. In addition, the radial direction of the predetermined member may mean a direction from the longitudinal center to the direction perpendicular to the longitudinal direction, that is, the direction of the outer surface of the bolt or nut at the rotation center to which the bolt or nut is coupled. In addition, the circumferential direction of the predetermined member may mean a direction that rotates with respect to the longitudinal center, that is, a direction that rotates at a predetermined position in the direction of the outer surface of the bolt or nut at the rotation center where the bolt or nut is coupled.

An end of the predetermined member may mean a longitudinal end of the predetermined member, which may mean a surface located at the longitudinal end. In addition, the outer surface of the predetermined member may mean an outer surface of the predetermined member except for the end portion. In addition, the inner surface of the predetermined member may mean a surface forming a hollow part provided in the predetermined member.

1 is a perspective view showing the basic shape of the lock nut assembly according to an embodiment of the present invention.

Referring to FIG. 1, the lock nut assembly 200 according to an embodiment includes a female screw thread coupled to the bolt 100, extends in a coupling direction with the bolt 100, and has an inner surface in a circumferential direction. A nut 210 having at least one inclined fixing groove 211 provided therein so as to increase a distance from an outer surface of the bolt 100 when the bolt 100 is coupled to the bolt 100; And a cylindrical locking member 213 provided in the coupling direction of the bolt 100 and the nut 210 and fitted into the fixing groove 211.

That is, the present invention, once the bolt 100 and the nut 210 once rotated mutually to prevent relative rotation in the opposite direction to the coupling direction so that the combined bolt 100 and the nut 210 is not released. A lock nut assembly.

As shown in FIG. 1, an inner surface of the nut 210 extends in a coupling direction with the bolt 100, and when coupled with the bolt 100, an inner surface thereof is circumferentially formed with an outer surface of the bolt 100. At least one inclined fixing groove 211 may be provided to increase a distance therebetween. In the drawings, three fixing grooves 211 are provided in the circumferential direction at predetermined intervals, but the fixing grooves 211 may be provided.

Here, when the fixing groove 211 is coupled to the bolt 100, an inner surface of the fixing groove 211 may be provided to increase the distance between the outer surface of the bolt 100 in the circumferential direction, the bolt 100 and the nut When the 210 is coupled, the lock member seating portion 211a having the largest radial spacing of the opposite side to the direction in which the nut 210 rotates may be provided. In other words, the fixing groove 211 is the bolt in the direction in which the nut 210 rotates when the bolt 100 and the nut 210 are coupled in the circumferential direction from the locking member seating portion 211a. It may be provided so that the interval with the outer surface of the 100 is small. That is, the inner surface of the fixing groove 211 may be provided in an inclined shape in a straight or round shape with respect to the inner surface of the nut 210, that is, the circumferential direction in which the thread is formed.

The locking member 213 may be fitted into the locking member seating portion 211a. The locking member 213 may be provided in a cylindrical shape. The diameter of the locking member seating portion 211a may be a size that is slightly larger than or substantially equal to the diameter of the locking member 213.

Accordingly, when the bolt 100 and the nut 210 are rotated relative to each other, even if the bolt 100 and the locking member 213 contact, the locking member 213 is mounted on the locking member. The bolt 100 and the nut 210 may be rotated relative to each other so as to freely rotate within the 211a.

However, after the bolt 100 and the nut 210 are rotated in the locking direction once, the nut 210 is rotated in the opposite direction to the locking direction so that the bolt 100 and the locking member 213 are rotated. Due to the friction in contact, the locking member 213 is released from the locking member seating portion 211a is generated, the locking member 213 is moved in the locking direction. In this case, since the gap between the fixing groove 211 is provided so that the gap with the outer surface of the bolt 100 in the direction of rotation when the nut 210 is locked to the bolt 100, the locking member 213 does not move and is firmly caught between the bolt 100 and the nut 210 in a state of being fitted in the fixing groove 211.

By this principle, once the bolt 100 and the nut 210 are locked, they are locked firmly and cannot be loosened.

Hereinafter, each component will be described in detail with reference to the accompanying drawings.

2 is a perspective view of the lock nut assembly according to an embodiment of the present invention, Figure 3 is an exploded perspective view of the lock nut assembly according to an embodiment of the present invention, Figure 4 is a lock according to an embodiment of the present invention Cross section of nut assembly.

2 to 3, the lock nut assembly 200 according to an embodiment includes a female screw thread to be coupled to the bolt 100, and extends in an engagement direction with the bolt 100 on an inner side and an inner side thereof. A nut 210 having at least one fixing groove 211 inclined to increase a distance from an outer surface of the bolt 100 when the bolt 100 is coupled to the circumferential direction; And a cylindrical locking member 213 provided in the coupling direction of the bolt 100 and the nut 210 and fitted into the fixing groove 211. In addition, the locking member 213 may be seated at a predetermined position while being inserted into the fixing groove 211 by the fixing means 214. Of course, the locking member 213 is free to rotate even when coupled to the fixing means 214 can move a predetermined distance in the circumferential direction.

The nut 210 has a female screw thread to be coupled to the bolt 100, extends in a coupling direction with the bolt 100 on an inner side thereof, and when the inner surface is coupled with the bolt 100 in a circumferential direction, the bolt ( At least one fixing groove 211 may be provided to be inclined so as to have a greater distance from the outer surface of the 100. In the illustration of the drawing is shown that the fixing groove 211 is provided with three spaced apart in the circumferential direction, but is not limited to this may be provided with one or more fixing grooves 211.

When the fixing groove 211 is coupled to the bolt 100, an inner surface of the fixing groove 211 may be provided to increase a distance from an outer surface of the bolt 100 in the circumferential direction, and the bolt 100 and the nut 210 may be increased. In the case of coupling), the locking member seating portion 211a having the largest radial spacing of the opposite side end to the direction in which the nut 210 rotates may be provided. In other words, the fixing groove 211 is the bolt in the direction in which the nut 210 rotates when the bolt 100 and the nut 210 are coupled in the circumferential direction from the locking member seating portion 211a. It may be provided so that the interval with the outer surface of the 100 is small. That is, the inner surface of the fixing groove 211 may be provided in an inclined shape in a straight or round shape with respect to the inner surface of the nut 210, that is, the circumferential direction in which the thread is formed. In addition, the fixing groove 211 may be provided in a shape that penetrates the nut 210 in the coupling direction with the bolt 100. In other words, both ends may have an open shape.

In addition, the locking member 213 may be seated in a predetermined position while being inserted into the fixing groove 211 by the fixing means 214. Of course, the locking member 213 is free to rotate even when coupled to the fixing means 214 can move a predetermined distance in the circumferential direction.

Thus, the locking member 213 may be provided in a cylindrical shape and a fixing protrusion 213a which is engaged by the fixing means 214 at both ends in the longitudinal direction. On the other hand, the fixing means 214 is provided with a flange 214b to face the inner surface of the nut 210 at the inner surface of the main body surface 214a and the main body surface 214a, the flange 214b is the nut The fixing protrusion 213a may be caught by the flange 214b while being fitted to the inner side of the 210 so that the locking member 213 may be a flange washer 214 to which the rotation is freely fixed.

Here, the fixing protrusion 213a may be provided with a diameter smaller than the diameter of the locking member 213.

In addition, the nut 210 may be provided with stepped grooves 212 on both sides of the coupling direction with the bolt 100, and the flange washers 214 may be fitted into the stepped grooves 212, respectively. Fitting may be made in a variety of fixed manners such as press-fit the flange washer 214 into the stepped groove 212, welding after the slide fitting.

In addition, the stepped groove 212 may have a first stepped groove 212a to which the main body surface 214a of the flange washer 214 is coupled, and a groove shape in a radially inward direction from the first stepped groove 212a. And a second stepped groove 212b in which the flange 214b of the flange washer 214 is located. In this case, the outer diameter of the main body surface 214a of the flange washer 214 may be press-fitted or slide-bonded to the outer diameter surface forming the first stepped groove 212a.

Accordingly, the diameter of the outer diameter of the main body surface 214a of the flange washer 214 is larger than or equal to the diameter of the outer diameter surface forming the first stepped groove 212a, is press-fitted, or is provided to be smaller than the slide coupling. After welding can be combined.

In addition, the inner diameter of the flange 214b is larger than the diameter of the inner surface of the nut 210, so that the inner diameter of the flange 214b in the process of coupling the bolt 100 with the nut 210 The bolt 100 may be prevented from interfering with the coupling of the nut 210. In other words, the contact between the flange 214b and the bolt 100 may occur or hardly occur.

5 is a perspective view of the lock nut assembly according to another embodiment of the present invention, Figure 6 is an exploded perspective view of the lock nut assembly according to another embodiment of the present invention, Figure 7 is a lock according to another embodiment of the present invention Cross section of nut assembly.

5 to 7, the lock nut assembly 200 according to another embodiment includes a female screw thread to be coupled to the bolt 100, and extends in the coupling direction with the bolt 100 on an inner side and is formed on the inner side. A nut 210 having at least one fixing groove 211 inclined to increase a distance from an outer surface of the bolt 100 when the bolt 100 is coupled to the circumferential direction; And a cylindrical locking member 213 provided in the coupling direction of the bolt 100 and the nut 210 and fitted into the fixing groove 211. In addition, the locking member 213 may be seated at a predetermined position while being inserted into the fixing groove 211 by the fixing means 214. Of course, the locking member 213 is free to rotate even when coupled to the fixing means 214 can move a predetermined distance in the circumferential direction.

The lock nut assembly 200 according to another embodiment has the same basic configuration as the lock nut assembly 200 according to the above-described embodiment. However, there is a difference in the structure of fixing the locking member 213. This will be described below.

Accordingly, the locking member 213 may be provided in a cylindrical shape and a fixing protrusion 213a coupled to the fixing means 214 at both ends in the longitudinal direction. On the other hand, the fixing means 214 is provided in a shape surrounding the outer surface of the nut 210, both ends penetrate in the coupling direction of the nut 210 and the bolt 100 in the fixing groove 211. Located at the portion, both ends of the locking member 213 may be freely fixed to rotate. Thus, both ends of the fixing means 214 may be provided with a fitting hole or a fitting groove 214a so that the fixing protrusion 213a can be freely rotated.

8A to 8C are perspective views of various embodiments of a nut used in the lock nut assembly according to the present invention.

Referring to FIG. 8A, an embodiment of a nut 210 according to the present embodiment is disclosed. The nut 210 may be provided with a stepped groove 212 in which a flange washer 214 provided to fix the locking member 213 may be fixed. The stepped groove 212 is provided with a first step groove 212a to which the main body surface 214a of the flange washer 214 is coupled, and a groove shape in a radially inward direction from the first step groove 212a. The second step groove 212b may include a flange 214b of the flange washer 214. In this case, the outer diameter of the main body surface 214a of the flange washer 214 may be press-fitted or slide-bonded to the outer diameter surface forming the first stepped groove 212a.

The flange washer 214 includes a flange 214b at an inner diameter of the body surface 214a and the body surface 214a so as to face the inner surface of the nut 210, and the flange 214b is connected to the nut. The fixing protrusion 213a is caught by the flange 214b while being fitted to the inner side of the 210 so that the locking member 213 can be freely rotated.

Referring to FIG. 8B, an embodiment of a nut 210 according to another embodiment is disclosed. The nut 210 may be inserted or seated with a fixing means 214 provided to fix the locking member 213, which may be provided with an insertion hole 217.

In particular, FIG. 8B discloses a nut 210 having a horizontal insertion hole 217a in which bent portions of both ends are seated in the 'c' shaped fixing means 214. According to the present embodiment, not only the fixing means 214 can be accurately seated at a predetermined position, but also the fixing means 214 from the nut 210 to the coupling direction surface of the bolt 100 and the nut 210. Since it does not protrude, the appearance is good and the bolt and nut can be tightened more tightly.

However, FIG. 8B may be a problem because the center portion of the 'c' shaped fixing means 214 still protrudes to the outer surface of the bolt. Thus, Figure 8 (c) may be further provided with a vertical insertion hole 217b in the 'c' shaped fixing means 214 to be accurately seated in a predetermined position up to the center portion.

9 (a) to 9 (c) are perspective views of various embodiments of the locking member used in the lock nut assembly according to the present invention.

9 illustrates various embodiments in which friction force increasing means are provided on the outer surface of the locking member 213 to improve the locking force of the locking member 213 according to the present embodiment. 9 (a) is provided with a lattice groove on the outer surface of the locking member 213, (b) is a straight groove is formed in the longitudinal direction, (c) is a spiral in the longitudinal direction, that is, the screw This is the case when a linear groove is formed.

10 (a) to 10 (c) are perspective views of various embodiments of fastening means used in the lock nut assembly according to the present invention.

10 illustrates that the fixing means 214 of various shapes may be utilized to increase the utilization of the fixing means 214 according to the present embodiment.

10A illustrates a flange washer 214 in one embodiment of the present invention such that the flange washer 214 faces the inner surface of the nut 210 against the inner surface of the body surface 214a and the body surface 214a. 214b and the flange 214b is fitted to the inner surface of the nut 210 while the fixing protrusion 213a is caught by the flange 214b so that the locking member 213 is freely fixed in rotation. It may be provided as.

10 (b) is an embodiment in which the fixing means 214 is formed by bending a steel plate in another embodiment of the present invention, and (c) is the fixing means 214 in another embodiment of the present invention. ) Is an embodiment formed by bending a wire.

11 (a) to 11 (c) are reference diagrams sequentially showing an example in which the lock nut assembly according to an embodiment of the present invention is coupled to a bolt.

First, referring to FIG. 10 (a), after the first member 1 and the second member 2 to be coupled to each other, the bolt 100 is fitted to the bolt head 110 on one side, Lock nut assembly 200 according to the embodiment of the present invention on the other side is fitted by a general nut coupling method.

Next, referring to FIG. 10B, the lock nut assembly 200 is coupled to the bolt 100 to form a state in which the first member 1 and the second member 2 are firmly coupled to each other. .

Next, referring to FIG. 10C, once the nut 210 is coupled to the bolt 100 in the lock nut assembly 200, the nut may not rotate in the opposite direction to the rotation direction when locked. 210 is to be permanently coupled to the bolt (100).

12 is a perspective view showing a basic coupling shape of the lock bolt assembly according to an embodiment of the present invention.

Referring to FIG. 12, the lock bolt assembly 100 according to an embodiment includes a male screw thread to be coupled to the nut 200, and extends in a coupling direction with the nut 200 on an outer surface thereof, and an inner surface thereof in a circumferential direction. When the nut 100 is coupled to the bolt 110 is provided with at least one inclined fixing groove 111 so as to increase the interval with the inner surface of the nut 100; And a cylindrical locking member 113 provided in the coupling direction of the nut 200 and the bolt 110 and fitted into the fixing groove 111.

That is, in the present invention, the bolt 110 and the nut 200 are locked so that the bolt 110 and the nut 200 are not loosened after the rotation of the bolt 110 and the nut 200 so as not to be rotated relative to each other in the opposite direction. Relates to a bolt assembly.

As shown in FIG. 12, the outer surface of the bolt 110 extends in a coupling direction with the nut 200, and when coupled with the nut 200, an outer surface of the bolt 110 is circumferentially coupled with the outer surface of the nut 200. At least one inclined fixing groove 111 may be provided to increase a distance therebetween. In the drawings, three fixing grooves 111 are spaced apart at predetermined intervals in the circumferential direction, but three fixing grooves 111 may be provided.

Here, the fixing groove 111 may be provided to increase the interval with the inner surface of the nut 200 in the circumferential direction when it is coupled with the nut 200. More specifically, when the nut 200 and the bolt 110 are coupled to be locked, the circumferential end of the bolt 110 in the relative rotation direction-in other words, the nut 200 is relatively rotated. It is possible to provide the locking member seating portion (111a) with the largest radial spacing of the end-in the circumferentially opposite direction of the direction.

In other words, the fixing groove 111 is a direction in which the bolt 110 is relatively rotated when the nut 200 and the bolt 110 are locked in the circumferential direction from the locking member seating portion 111a. Increasingly, the distance between the outer surface of the bolt 110 and the bottom surface of the fixing groove 111 may be provided to increase. That is, the inner surface of the fixing groove 111 may be provided in an inclined shape in a straight or round shape with respect to the outer surface of the bolt 110, that is, the circumferential direction in which the thread is formed.

The locking member 113 may be fitted into the locking member seating portion 111a. The locking member 113 may be provided in a cylindrical shape. The diameter of the locking member seating portion 111a may be a size slightly larger than or substantially the same as the diameter of the locking member 113.

Accordingly, when the bolt 110 and the nut 200 rotate relative to each other, even if the nut 200 and the locking member 113 contact, the locking member 113 is the locking member seating portion. Rotation freely within 111a may allow the nut 200 and the bolt 110 to rotate relative to each other.

However, after the nut 200 and the bolt 110 are rotated in the locking direction once, the bolt 110 or the nut 200 is rotated in the opposite direction to the locking direction. Due to the friction of the contact of the member 113, the locking member 113 is released from the locking member seating portion 111a is generated, the locking member 113 is moved in the locking direction. In this case, since the interval between the fixing groove 111 is provided so that the gap with the outer surface of the bolt 110 in the direction of rotation when the nut 200 is locked to the bolt 110, the locking member 113 does not move and is firmly caught between the bolt 110 and the nut 200 in a state of being fitted in the fixing groove 111.

By this principle, once the bolt 110 and the nut 200 are locked, they are firmly locked and cannot be loosened.

Figure 13 is a perspective view of the lock bolt assembly and the nut according to an embodiment of the present invention, Figure 14 is an exploded perspective view of the lock bolt assembly and the nut according to an embodiment of the present invention, Figure 15 is an embodiment of the present invention A cross sectional view of a lock bolt assembly and a nut according to an example.

13 to 14, the lock bolt assembly 100 according to an embodiment includes a male screw thread to be coupled with the nut 200, and extends in an engagement direction with the nut 200 on an outer surface and is formed on an inner surface thereof. A bolt 110 having at least one fixing groove 111 inclined so as to increase a distance from an inner surface of the nut 200 when the nut 200 is coupled to the nut 200 in the circumferential direction; And a cylindrical locking member 113 provided in the coupling direction of the nut 200 and the bolt 110 and fitted into the fixing groove 111. In addition, the locking member 113 may be seated in a predetermined position while being inserted into the fixing groove 111 by the fixing means 114. Of course, the locking member 113 is free to rotate even when coupled to the fixing means 114 can move a predetermined distance in the circumferential direction.

The bolt 110 is provided with a male screw thread to be coupled to the nut 200, extends in a coupling direction with the nut 200 on an outer side thereof, and when coupled with the nut 200, the nut 200 is disposed within the nut 200. At least one fixing groove 111 having an inclined bottom surface may be provided to increase a distance from the side surface. In the illustration of the drawing is shown that the fixing groove 111 is provided with three spaced apart a predetermined interval in the circumferential direction, but is not limited to this may be provided with one or more fixing groove 111.

The fixing groove 111 may be provided to increase the distance between the inner surface of the nut 200 in the circumferential direction when it is coupled to the nut 200, the nut 200 and the bolt 110 In the case of coupling, the locking member seating portion 111a having the largest radial distance at the circumferential end in the direction in which the bolt 110 rotates may be provided.

In other words, the fixing groove 111 is the nut in the direction in which the bolt 110 rotates when the nut 200 and the bolt 110 are coupled in the circumferential direction from the locking member seating portion 111a. It may be provided to increase the distance from the inner surface of the (100). That is, the bottom surface of the fixing groove 111 may be provided in an inclined shape in a straight or round shape with respect to the outer surface of the bolt 110, that is, the circumferential direction in which the thread is formed.

In addition, the locking member 113 may be seated at a predetermined position while being inserted into the fixing groove 111 by the fixing means 114. Of course, the locking member 113 is free to rotate even if the fixing means 114 is provided in the bolt 110 can move a predetermined distance in the circumferential direction.

Thus, the locking member 113 may be provided in a cylindrical shape and a fixing protrusion 113a which is locked to the fixing means 114 at both ends in the longitudinal direction.

On the other hand, the fixing means 114 is provided with a flange (115b) to face the outer surface of the bolt 110 at the outer diameter of the main body surface 115a and the main body surface (214a), the flange 115b is the A flange washer 115 to which one of the fixing protrusions 113a is caught by the flange 115b while being fitted to the outer surface of the bolt 110 so that the locking member 113 is freely fixed to the rotation, and the fixing groove. On the inner bottom surface of the 111 is provided in the circumferential direction so that the nut 200 protrudes in the opposite direction to be fitted to the bolt 110, the other one of the fixing projections 113a is locked to the lock The member 113 may be a release preventing flange 116 to which the rotation is freely fixed.

Here, the fixing protrusion 113a may be provided with a diameter smaller than the diameter of the locking member 113.

In addition, the bolt 110 may be provided with a stepped groove 112 at an end surface in a direction in which the nut 200 starts to be fitted. The stepped groove 112 may be provided in the circumferential direction along the edge of the end of the bolt 110.

In addition, the flange 115b of the flange washer 115 may be fitted to the stepped groove 112. Fitting can be made in a variety of fixed manners such as the radially inner surface of the flange 115b of the flange washer 214 press-fitted into the radially outer surface of the stepped groove 112, or welding after slide fitting. In addition, the flange washer 115 may be coupled to the bolt 110 using a separate screw 119-see (b) of FIG.

Here, the diameter of the outer diameter of the main body surface 115a of the flange washer 115 or the diameter of the outer diameter of the flange 115b may be provided to be smaller than or equal to the outer diameter of the bolt 110. Only then, when the nut 200 is coupled to the bolt 110, the inner diameter of the nut 200 may be easily fitted to the end of the bolt 110.

16A and 16B are perspective views of embodiments of bolts used in the lock bolt assembly according to the present invention.

Referring to FIG. 16A, an embodiment of the bolt 110 according to the present embodiment is disclosed. The bolt 110 may be provided with a step groove 112 in which a flange washer 115 may be fixed to fix the locking member 113. That is, a step groove 112 may be provided to which the flange 115b of the flange washer 115 is press-fit or slide-coupled.

More specifically, the main body surface 115a of the flange washer 115 is mounted to the end of the bolt 110, the outer surface direction of the bolt 110 in the main body surface 115a-that is, the step groove (112)-Flange 115b extending to the press-fitted to the outer surface of the stepped groove 112 may be coupled by welding, adhesive bonding, etc. after the slide coupling.

The flange washer 115 includes a flange 115b so as to face an outer surface of the bolt 110 at an outer diameter of the main body surface 115a and the main body surface 115a. In addition, the flange 115b is fitted to the outer surface of the bolt 110 to prevent the fixing groove 111 from radially outer side, so that the fixing protrusion 113a is fixed inside the fixing groove 111. The locking member 113 may be freely fixed by being locked to 115b).

In addition, the bolt 110 is provided in the circumferential direction so that the nut 200 protrudes in the opposite direction to be fitted to the bolt 110 in the radially outer side from the inner bottom surface of the fixing groove 111 is fixed. The other one of the protrusions 113a may be locked, and the locking member 113 may include a release preventing flange 116 to which the rotation is freely fixed.

Thus, one end of the fixing protrusion 113a provided at both ends of the locking member 113 may be caught by the flange 115b, and the other end of the fixing protrusion 113a may be caught by the release preventing flange 116.

Referring to (b) of FIG. 16, the other configuration and the reason for the provision are the same as in FIG. 16 (a), except that there is a slight difference only in the manner in which the flange washer 115 is fixed.

That is, another embodiment of the bolt 110 according to the present embodiment is disclosed. In another embodiment, the flange washer 115 is provided with a coupling screw hole 114c (see FIG. 18B), and the bolt 110 may be provided with a screwing groove 118 at an end thereof. In addition, the flange washer 115 may be fixed to the bolt 110 by a coupling screw inserted into the coupling screw hole 114c and the screw coupling groove 118 at the same time (see FIG. 18B). have.

Even in this case, the bolt 110 may be provided with a step groove 112 through which the flange washer 115 may be fitted. That is, a step groove 112 may be provided to which the flange 115b of the flange washer 115 is press-fit or slide-coupled.

More specifically, the main body surface 115a of the flange washer 115 is mounted to the end of the bolt 110, the outer surface direction of the bolt 110 in the main body surface 115a-that is, the step groove (112)-Flange 115b extending in the may be pressed or slide coupled to the outer surface of the step groove (112). Of course, a combination of welding, adhesive bonding, etc. can be made further.

17 (a) to 17 (c) are perspective views of various embodiments of a locking member used in the lock bolt assembly according to the present invention.

17 illustrates various embodiments in which friction force increasing means are provided on the outer surface of the locking member 113 to improve the locking force of the locking member 113 according to the present embodiment. 17 (a) is provided with a lattice groove on the outer surface of the locking member 113, (b) is a straight groove is formed in the longitudinal direction, (c) is a spiral in the longitudinal direction, that is, the screw This is the case when a linear groove is formed.

Figures 18 (a) and (b) are perspective views of an embodiment of the fixing means 114 used in the lock bolt assembly according to the present invention.

18 illustrates that the fixing means 114 of various shapes may be utilized to increase the utilization of the fixing means 114 according to the present embodiment. In addition, in the present embodiment, the fixing means 114 is provided with a flange 115b so as to face the outer surface of the bolt 110 at an outer diameter of the main body surface 115a and the main body surface 115a and the flange ( One of the fixing protrusions 113a is caught by the flange 115b while the fastening member 115b is fitted to the outer surface of the bolt 110 so that the locking member 113 freely rotates. On the inner bottom surface of the fixing groove 111, the nut 200 is provided in the circumferential direction so as to protrude in the opposite direction to be fitted to the bolt 110, the other one of the fixing projection (113a) The locking member 113 may be a release preventing flange 116 to which rotation is freely fixed.

Hereinafter, the separation preventing flange 116 will be replaced with that described with reference to FIG. 16, and the structure of the flange washer 115 will be described in detail.

18A illustrates a flange washer 115 according to one embodiment of the present invention, wherein the flange washer 115 faces the outer surface of the bolt 110 at an outer diameter of the body surface 115a and the body surface 115a. 115b) and the flange 115b is fitted to the outer surface of the bolt 110 so that the fixing protrusion 113a is caught by the flange 115b so that the locking member 113 is freely fixed in rotation. It may be provided as.

FIG. 18B illustrates a coupling screw hole 114c in the main body surface 115a of the flange washer 115 and penetrates the coupling screw hole 114c in another embodiment of the present invention. The flange washer 115 is coupled to the bolt 110 by a coupling screw 119 fixed to 110.

19A to 19C are reference diagrams sequentially illustrating an example in which a lock bolt assembly according to an embodiment of the present invention is coupled to a nut.

First, referring to FIG. 19 (a), after the first member 1 and the second member 2 to be coupled to each other, the lock according to the embodiment of the present invention so that the bolt head 110 is caught on one side Insert the bolt assembly 100, the nut 200 to the other side by fitting the general nut coupling method.

Next, referring to FIG. 19B, the lock bolt assembly 100 is coupled to the nut 200 to form a state in which the first member 1 and the second member 2 are tightly coupled. .

Next, referring to FIG. 19 (c), once the bolt 110 is coupled to the nut 200 in the lock bolt assembly 100, the nut cannot rotate in the opposite direction to the rotation direction when locked. 200 is to be permanently coupled to the bolt (110).

Claims

It is provided with a female screw thread to be coupled to the bolt, and the fixing groove which is inclined so that the inner surface is extended in the joining direction with the bolt and the inner surface is increased in the circumferential direction with the outer surface of the bolt when coupled with the bolt at least One nut is provided; And

And a cylindrical locking member provided in the coupling direction of the bolt and the nut and fitted into the fixing groove.
The method of claim 1,

Lock nut assembly further comprises a fixing means for freely rotating the locking member about the longitudinal direction to the nut.
The method of claim 1,

The lock member assembly diameter of the locking member is less than or equal to the diameter of the largest portion of the fixing groove with the outer surface of the bolt.
The method of claim 1,

The largest portion of the fixing groove with the outer surface of the bolt is the lock nut assembly provided on the opposite side of the rotation direction when the nut is coupled to the bolt in the circumferential direction.
The method of claim 1,

Lock nut assembly is provided on the outer surface of the locking member friction increase means.
The method of claim 4, wherein

The friction increasing means is a lock nut assembly of at least one of a lattice groove, a straight groove and a threaded groove provided on the outer surface of the locking member.
The method of claim 2,

The fixing groove is provided in a shape penetrated in the coupling direction with the bolt in the nut,

The locking member is provided with fixing projections at both end faces, and is disposed such that both ends are located in a coupling direction of the nut and the bolt in the fixing groove,

The fixing means has a flange so as to face the inner surface of the nut on the inner surface of the main body surface and the main body surface and the locking projection is caught by the flange while the flange is fitted to the inner surface of the nut. Flange washer lock nut assembly for free rotation.
The method of claim 7, wherein

The locking protrusion assembly is provided with a diameter smaller than the diameter of the locking member.
The method of claim 7, wherein

The nut is provided with stepped grooves on both sides in the coupling direction with the bolt,

And a lock nut assembly in which the flange washers are respectively fitted into the step grooves.
The method of claim 9,

The step groove is a first step groove that is coupled to the body surface of the flange washer,

And a second step groove provided in a groove shape in a radially inward direction from the first step groove, wherein the flange of the flange washer is positioned.
The method of claim 10,

The lock nut assembly of which the inner diameter of the flange is larger than the diameter of the inner side of the nut.
A male thread is provided on the outer side to engage with the nut, and extends in the joining direction with the nut on the outer side, and when coupled with the nut, the outer side is inclined such that the distance from the inner side of the nut increases in the circumferential direction. A bolt having at least one fixing groove; And

And a cylindrical locking member provided in the coupling direction of the nut and the bolt and fitted into the fixing groove.
The method of claim 12,

Locking bolt assembly further comprises a fixing means for freely rotating the locking member about the longitudinal direction to the nut.
The method of claim 12,

The lock member of the locking member is smaller than or equal to the diameter of the locking groove in the fixing groove and the inner side of the largest portion.
The method of claim 12,

The largest portion of the fixing groove in the gap with the inner surface of the nut is provided on the opposite side of the rotation direction when the bolt is coupled to the nut in the circumferential direction.
The method of claim 12,

Lock bolt assembly is provided on the outer surface of the locking member friction increase means.
The method of claim 16,

The friction increasing means is a lock bolt assembly of at least one of a grid groove, a straight groove and a threaded groove provided on the outer surface of the locking member.
The method of claim 13,

The fixing groove is provided in the coupling direction with the nut on the bolt,

The locking member is provided with fixing projections at both end faces, and is disposed such that both ends are located in a coupling direction of the bolt and the nut in the fixing groove,

The fixing means has a flange so as to face the outer surface of the bolt on the outer surface of the main body surface and the main body surface and one of the fixing projections is locked to the flange while the flange is fitted to the outer surface of the bolt. The member is provided with a flange washer for rotation freely fixed, and in the circumferential direction so that the nut protrudes in the opposite direction to fit the bolt on the radially outer side from the inner bottom surface of the fixing groove is engaged with the other of the fixing projections Lock bolt assembly of the lock member is a separation prevention flange that the rotation is fixed freely.
The method of claim 18,

The locking protrusion assembly is provided with a diameter smaller than the diameter of the locking member.
The method of claim 18,

The bolt is provided with a step groove in the end surface of the direction in which the nut begins to fit,

The lock bolt assembly is fitted to the flange washer in the step groove.
The method of claim 20,

And an outer diameter of the flange is less than or equal to the diameter of the outer surface of the bolt.