KR101472952B1 - Anti-loose nut and bolt - Google Patents

Abstract

In the present invention, when the nut and the bolt are screwed together, a plurality of ratchet teeth are formed on the thread of the bolt, and a ratchet projection for restricting the rotation direction of the nut by being selectively supported on the ratchet teeth inside the nut is elastically When the nut and the bolt are rotated in the direction to be engaged with each other, the ratchet teeth and the inclinations of the ratchet protuberances are interfaced with each other, the ratchet protrusion is retracted to rotate, and when the nut and the bolt are rotated in the unwinding direction, The present invention relates to an anti-loosening nut and a bolt, which can prevent the loosening of the coupling between the nut and the bolt by restricting the rotation due to the mutual support of the vertical surfaces of the teeth and the ratchet protrusion.
According to a preferred embodiment of the present invention, the loosening preventing nut and the bolt are formed with a head at the top and a body at the bottom, and a thread is formed at the outer circumference of the body, and a ratchet tooth is continuously protruded at the edge of the thread. A screw hole is formed at the center so that the body of the bolt can be inserted, and another screw thread capable of screwing with the screw thread of the bolt is formed at the inner circumference of the screw hole, and an installation hole is formed through the screw hole at one side thereof And a loosening preventing means for restricting a rotating direction of the ratchet teeth of the bolt which is operatively installed in the mounting hole and whose tip end is elastically received in and screwed into the screw hole, .

Description

ANTI-LOOSE NUT AND BOLT}

More particularly, the present invention relates to an anti-loose nut and a bolt, and more particularly, to a bolt having a plurality of ratchet teeth formed on a thread of a bolt, and selectively supported on the ratchet teeth inside the nut, When the nut and the bolt are rotated in the direction in which the nut and the bolt are engaged, the ratchet teeth and the inclined surfaces of the ratchet protrusions are mutually interposed, and the ratchet protrusion is retracted to rotate When the nut and the bolt are rotated in the unlocking direction, the ratchet teeth and the vertical surfaces of the ratchet protrusions are mutually supported to prevent rotation of the ratchet protrusion, It is about bolts.

Generally, bolts and nuts are widely used in various fields such as assembly of automobile parts, assembling of electronic parts, and assembling of furniture, for the purpose of fastening and assembling two or more separated objects as a single body.

Such a conventional bolt and nut fastening structure is composed of a bolt to be fitted to the object to be fastened and a nut to be screwed to the bolt. In order to improve the fastening force of the bolt and the nut, and to prevent the bolt and nut from being loosened by external impact or vibration, the washer is inserted into the bolt and the nut in close contact.

In order to fasten the object to be fastened with such a bolt and nut fastening structure, first, the bolt is passed through the fitting hole formed in the fastened object, and then the nut is fastened to the bolt by fastening the nut to the threaded portion of the bolt . In this case, the washer is inserted into the bolt and the nut, thereby preventing the bolt and the nut from being loosened by external impact or vibration.

However, since the fastening force of the nut is easily released from the bolt due to external shock and vibration, the fastening force of the bolt and nut is weakened or lost. In order to solve this problem, However, the fastening force of the bolt and the nut was maintained, but the fastening force was loosened when the fastening force was maintained for a long time.

Accordingly, it is an object of the present invention to provide a bolt having a plurality of ratchet teeth formed in a thread of a bolt when a nut and a bolt are screwed together, and a ratchet projection for restricting a rotation direction of the nut by selectively supporting the ratchet, When the nut and the bolt are rotated in the direction to be engaged with each other, the ratchet teeth and the inclined surfaces of the ratchet protrusions are mutually interposed, and the ratchet projection is retracted to rotate, and the nut and the bolt are rotated in the unwinding direction And the vertical surfaces of the ratchet teeth and the ratchet protrusions are mutually supported to prevent rotation of the ratchet protrusion due to the rotation of the ratchet teeth, thereby preventing the coupling between the nut and the bolt from being arbitrarily disengaged.

The object of the present invention is to provide a bolt having an upper head and a lower body, a bolt having a thread formed on the outer circumference of the body, a ratchet teeth continuously protruding from the edge of the thread, A nut having a threaded hole formed therethrough so as to be inserted therethrough and having another thread threadably engageable with the thread of the bolt at an inner circumference of the threaded hole and having an installation hole formed at one side thereof through the threaded hole; And a loosening preventing means for restricting a rotational direction of the ratchet teeth of the bolt, the leading end side of which is elastically received in the screw hole side and screwed into the screw hole, Bolts. ≪ / RTI >

According to a preferred aspect of the present invention, the ratchet tooth is formed by continuously protruding a plurality of teeth including a first inclined surface and a first vertical surface, wherein the first inclined surface is inclined in one direction.

According to a preferred aspect of the present invention, the loosening preventing means described above is disposed in the inner peripheral side mounting hole of the nut, and the tip end of the latching protrusion is received in the screw hole and the latching protrusion, which is elastically supported at the ratchet teeth, A support member having a through hole formed at the center thereof by screwing in an outer circumferential side mounting hole of the nut to close the mounting hole and having a through hole formed at the center thereof; And a rear portion of the support member is received in the support member to restrict movement of the support member into the through hole and a thread is formed on the inner peripheral edge of the front portion so as to be screwed with the thread of the connection portion, A fixing member for limiting the insertion and removal of the ratchet projection to the screw hole, End is supported on the other end rechit projection is assumed to be supported on the support member, which includes an elastic spring to move the fare book material, and a fixing member according to the rotation direction of the bolt elastically in said installation hole.

According to a preferred aspect of the present invention, the loosening preventing means described above is disposed in the inner peripheral side mounting hole of the nut, and the tip end of the latching protrusion is received in the screw hole and the latching protrusion, which is elastically supported at the ratchet teeth, A support member which is threadedly engaged with an outer circumferential side installation hole of the nut to close the installation hole and has a through hole formed at the center thereof and a support member which is positioned in the installation hole and whose one end is supported by the ratchet projection, And an elastic spring which is supported by the support member and elastically moves the tray member in the mounting hole along the rotating direction of the bolt.

According to a preferred aspect of the present invention, the tip of the aforementioned ratchet projection is formed of a second inclined surface and a second perpendicular surface, and when the bolt is rotated in the direction in which the engagement of the bolt and the nut progresses, When the bolt is rotated in a direction in which the bolt and nut are loosened when the bolt and the nut are loosened, the first vertical surface and the second vertical surface are rotated, It is assumed that the rotation is restricted while being mutually supported.

As described above, according to the preferred embodiment of the present invention, when the nut and the bolt are screwed together, a plurality of ratchet teeth are formed in the thread of the bolt, and the ratchet teeth are selectively inserted into the nut. A ratchet projection for restricting the rotation direction of the nut is supported so as to be elastically collapsible. When the nut and the bolt are rotated in a direction to be engaged with each other, the ratchet teeth and the inclined surfaces of the ratchet projection are mutually interposed, When rotation is performed and the nut and the bolt are rotated in the unwinding direction, the vertical surfaces of the ratchet teeth and the ratchet protrusion are mutually supported, so that the rotation of the ratchet protrusion is prevented, thereby preventing the coupling between the nut and the bolt from being arbitrarily released. It is effective.

1 is a perspective view of an anti-loose nut and bolt according to an embodiment of the present invention;
FIG. 2 is an exploded perspective view of a loosening preventing nut and bolt preventing means according to an embodiment of the present invention; FIG.
FIGS. 3A through 3C are views illustrating operation of a loosening preventing nut and a bolt for preventing loosening according to an embodiment of the present invention; FIG.
FIGS. 4A and 4B are other operating views of the loosening preventing nut and the loosening preventing means of the bolt according to another embodiment of the present invention. FIG.
FIGS. 5 and 6 are views showing the use states of the anti-loose nuts and bolts according to one embodiment of the present invention.

FIG. 1 is a perspective view of a loosening preventing nut and a bolt according to an embodiment of the present invention. FIG. 2 is an exploded perspective view of a loosening preventing nut and bolt preventing means according to an embodiment of the present invention, FIGS. 3A to 3C illustrate operation of the loosening preventing nut and the bolt according to the embodiment of the present invention. FIGS. 4A and 4B show the loosening preventing nut and the bolt according to another embodiment of the present invention, And FIGS. 5 and 6 show a state of use of the anti-loose nuts and bolts according to an embodiment of the present invention.

The anti-loosening nut and bolt 1 according to a preferred embodiment of the present invention includes an upper head 110 and a lower body 120. A thread is formed on the outer circumference of the body 120, And a screw hole 210 is formed at the center of the bolt 100 so that the body 120 of the bolt 100 can be inserted therethrough and the screw hole 210 A nut 200 is formed at an inner periphery of the bolt 100 so that another thread capable of screwing with the thread of the bolt 100 is formed and an installation hole 220 is formed through the screw hole 210 toward the screw hole 210, The tip end side of which is elastically received in the screw hole 210 and is screwed into the screw hole 210 so that the rotational direction of the ratchet teeth 130 of the bolt 100 The release preventing means 300 is provided.

Hereinafter, as shown in FIG. 1 to FIG. 4B, constituent members of the loosening preventing nut and the bolt 1 according to a preferred embodiment of the present invention and their connection relationship will be described in detail.

At this time, in a preferred embodiment of the present invention, when the nut 200 is coupled with the bolt 100, the nut 200 is fixed and the bolt 100 is rotated. The first inclined surface 131 and the first vertical surface 133 of the ratchet teeth 130 are formed in a direction in which the bolts 100 are rotated in the clockwise direction by the fixed nut 200, And the second inclined plane 313 and the second perpendicular plane 315 of the ratchet projection 311 and the counterclockwise rotation is a direction in which the mutual screwing is progressed, The first vertical surface 133 and the second inclined surface 313 and the second vertical surface 315 of the ratchet projection 311 should also be reversed.

The bolt 100 is inserted into the body 400 to be fastened and is supported on one surface of the body 400. The bolt 100 is composed of an upper head 110 and a lower body 120, 120 are formed on the outer periphery of the threaded portion and the ratchet teeth 130 are continuously protruded from the edge of the threaded portion. The ratchet teeth 130 are formed by serially protruding a plurality of teeth including a first inclined plane 131 and a first vertical plane 133 while the first inclined plane 131 is inclined in one direction. At this time, the inclined direction of the first inclined plane 131 is perpendicular to the direction in which the bolt 100 and the nut 200 are rotated and the direction of the second inclined plane 313 of the ratchet projection 311, which will be described later, Should be considered. That is, when the bolt 100 is rotated clockwise to engage with the nut 200 or when the nut 200 is rotated counterclockwise to engage with the bolt 100, the first inclined surface 131 rotates clockwise And the second inclined surface 313 must be formed so as to be in contact with the inclined surface when the ratchet teeth 130 are rotated in the clockwise direction.

The overall shape and function of the bolt 100 is the same as the bolt according to the prior art, except that the bolt 100 is formed with the ratchet teeth 130, and the detailed description will be omitted for the sake of simplicity.

The nut 200 is screwed to the body 120 of the bolt 100 inserted into the body 400 so that one side of the nut 200 is supported by the bolt 100 And is supported on the other surface of the clamped object 400 so that a fixed holding force against the clamped object 400 is exerted together with the bolt 100. The nut 200 has a screw hole 210 through which the body 120 of the bolt 100 can be inserted and a threaded portion of the bolt 100 is screw- Another possible thread is formed and an installation hole 220 is formed through the screw hole 210 at one side.

The overall shape and function of the nut 200 is the same as that of the prior art, and the detailed description of the nut 200 will be omitted. And will be omitted for simplification of the specification.

On the other hand, in the above-mentioned installation hole 220, a release preventing means 300 is operatively installed. The tip end side of the release preventing means 300 is elastically received in the screw hole 210 side, And the rotation direction of the ratchet teeth 130 of the bolt 100 screwed into the ratchet teeth 130 is restricted.

That is, when the nut 200 and the bolt 100 are rotated in the direction of mutual engagement, the ratchet teeth 130 elastically retract and rotate the ratchet projection 311, The ratchet teeth 311 can not be elastically retracted when the ratchet teeth 130 are rotated in the reciprocating direction so that the ratchet teeth 311 do not rotate as the ratchet teeth 130 interfere with rotation of the ratchet teeth 130 do. This principle is the same as the principle of a ratchet mechanism according to the prior art.

The unlocking means 300 is located in the inner peripheral side mounting hole 220 of the nut 200 and has its tip directed toward the screw hole 210 while being elastically supported on the ratchet teeth 130 at the front side. And a threaded portion 310 is formed in the rear of the nut 200 and threadedly connected to the outer circumferential side mounting hole 220 of the nut 200. [ A supporting member 320 having a through hole formed at the center thereof to close the hole 220 and a support member 320 which is inserted into the through hole so as to allow the front to flow therethrough and is accommodated in the support member 320 to restrict movement of the through hole into the through hole. A fixing member 330 for limiting the insertion or removal of the latching protrusion 311 with respect to the screw hole 210 according to the degree of screw connection, , And is disposed in the mounting hole (220), and one end is supported by the ratchet projection (311) And the elastic spring 340 is supported by the support member 320 and elastically moves the carry member 310 and the fixing member 330 in the mounting hole 220 according to the rotation direction of the bolt 100 do.

The tip end of the aforementioned ratchet projection 311 is formed of the second inclined surface 313 and the second vertical surface 315 so that the nut 200 or the bolt 200 is inserted in the direction in which the bolt 100 and the nut 200 are engaged, The first inclined surface 131 presses the second inclined surface 313 to rotate the receptacle member 310 while being elastically drawn into the mounting hole 220 as shown in FIG. When the nut 200 or the bolt 100 is rotated in the direction in which the bolt 100 and the nut 200 are loosened when the bolt 100 and the nut 200 are loosened, the first vertical surface 133 and the second vertical surface 133, as shown in FIG. The vertical surface 315 is mutually supported and rotation is restricted.

The length of the latching protrusion 311 protruded toward the screw hole 210 is determined by the distance between the connecting portion 317 and the fixing member 330). Therefore, when the nut 200 and the bolt 100 are to be coupled or when the coupling force is to be maintained, the receptacle member 310 and the fixing member 330 are inserted into the receptacle 310 such that the receptacle protrusion 311 protrudes by the length of the ratchet teeth 130, When the nut 200 and the bolt 100 are to be loosened, the latching protrusion 311 is completely inserted into the mounting hole 220 as shown in FIG. 3C, 310 and the fixing member 330 are further screwed together so that the cash box material 310 is moved backward to the inside of the installation hole 220.

The loosening preventing means 300 is located in the inner peripheral side mounting hole 220 of the nut 200 and has its tip directed toward and out of the screw hole 210 while elastically supporting the ratchet teeth 130 in the forward direction And a supporting member 310 which is screwed into the outer peripheral side mounting hole 220 of the nut 200 to close the mounting hole 220 and has a through hole formed at the center thereof, And the other end is supported by the support member 320 so that the outflow material 310 is installed in the mounting hole 220 according to the rotation direction of the bolt 100, And an elastic spring 340 elastically moving in the elastic member 220. 4A and 4B, since the connection member 317 of the cash box member 310 is not formed and the fixing member 330 is not provided to be screwed with the connection member 317, When the nut 200 and the bolt 100 are to be unbonded, the support member 320 is separated from the mounting hole 220 and the ratchet projection 320 is released, (311) into the installation hole (220).

Hereinafter, as shown in FIGS. 5 and 6, a method of using the release preventing nut and the bolt 1 according to the preferred embodiment of the present invention will be described in detail.

When the nut 200 and the bolt 100 are coupled to each other, the bolt 100 is first inserted into the side of the workpiece 400 so that one side of the workpiece 400 is supported by the head 110, The nut 200 is coupled to the body 120 of the bolt 100 to support the other surface of the body 400. When the threads of the nut 200 and the bolts of the bolt 100 are screwed together, The first inclined face 131 of the teeth 130 presses the second inclined face 313 of the ratchet projection 311 and the cashbox material 310 pressed by the second inclined face 313 is inserted into the mounting hole 220 The rotation proceeds while being drawn. The ratchet protrusion 311 is drawn into the mounting hole 220 at the highest point of the ratchet teeth 130 and is inserted into and discharged from the ratchet teeth 130 between the ratchet teeth 130 and the ratchet teeth so that the bolt 100 is engaged with the nut 200 As shown in Fig.

The first vertical surface 133 of the ratchet teeth 130 and the second vertical surface 315 of the ratchet protrusions 311 are supported so as to face each other when the bolts 100 are loosened The rotation of the bolt 100 is restricted because the ratchet teeth 130 can not draw the ratchet projection 311 into the mounting hole 220. This causes the nut 200 and the bolt 100 to be rotated 400 can be prevented from being relaxed and flowing.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. It is not limited.

1: Loosening nut and bolt 100: Bolt
110: head 120: torso
130: ratchet teeth 131: first inclined surface
133: first vertical surface 200: nut
210: screw hole 220: installation hole
300: loosening preventing means 310:
311: a ratchet projection 313: a second inclined surface
315: second vertical plane 317:
320: support member 330: fixing member
340: elastic spring 400:

Claims (5)

A bolt having a head on an upper portion and a body on a lower portion thereof, a thread formed on an outer circumference of the body, and a ratchet tooth continuously protruding from an edge of the thread;
A screw hole is formed at the center so as to allow the body of the bolt to be inserted therethrough, and another screw thread capable of screwing with the thread of the bolt is formed at the inner circumference of the screw hole, ; And
And a loosening preventing means that is operatively installed in the installation hole and whose distal end side is resiliently received in the screw hole side to limit the rotational direction of the ratchet teeth of the bolt threaded into the screw hole,
Wherein the ratchet teeth are formed by serially protruding a plurality of teeth including a first inclined surface and a first vertical surface, the first inclined surface being inclined in one direction,
The release preventing means
A ratchet protrusion which is elastically supported by the ratchet teeth is formed at a front end of the nut and a distal end of the nut is inserted into the screw hole of the nut, Cash drawer;
A support member screwed into the outer peripheral side installation hole of the nut to close the installation hole and having a through hole formed at the center thereof;
And a rear portion of the support member is received in the support member so as to restrict movement of the support member into the through hole and a thread is formed on the inner peripheral edge of the front portion so as to be screwed with the thread of the connection portion, A fixing member for limiting the insertion or removal of the ratchet projection to the screw hole according to a degree of engagement; And
And an elastic spring which is disposed in the mounting hole and has one end supported by the ratchet projection and the other end supported by the support member to elastically move the housing member and the fixing member in the mounting hole along the rotating direction of the bolt Characterized in that the bolt (1) comprises a bolt (2). delete delete delete delete

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