KR20180043692A - Non-release bolt and nut - Google Patents

Abstract

The present invention relates to a non-release bolt and nut, which can be easily coupled with a normal tool, and can effectively prevent release caused by continuous vibration or an external force such as a shock or the like.

Description

[0001] NON-RELEASE BOLT AND NUT [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a fastener having bolts and nuts, and more particularly, to a fastening preventing fastener which can be tightly fastened using a common tool and which can effectively prevent loosening by external force such as continuous vibration or impact.

Typical fasteners, bolts and nuts, are widely used for fastening or fixing building materials, machine parts, and the like. The bolts and nuts are fastened to a bolt having a head and a male thread portion and a nut having a female thread portion coupled to the male thread portion .

In this case, the tightening is performed by the contact friction between the male thread portion and the female thread portion. However, when stress, deformation, or the like occurs due to vibration, shock, temperature change, or the like, unintentional tightening may occur unintentionally.

Conventional methods for preventing such loosening include a method of inserting various types of resilient washers between bolt heads and nuts, a method of using a lock nut of a special shape, a method of using an adhesive, a method of inserting a split pin into a male thread, And a method of preventing rotation and departure of the motor.

However, such a conventional method still retains the fastening force depending on the frictional force or the pin having a relatively low strength, and therefore, when the object to be fastened is subjected to long-term continuous vibration or impact,

Especially, large equipment and structures that are large in size and weight of bolts and nuts due to continuous vibration, connecting parts of rides or bridges, steel towers with shaking due to wind, and marine structures that are impacted by waves The need for an anti-loosening fastener is an absolute necessity.

Published Japanese Patent Application No. 10-2015-0115411 (Oct.

SUMMARY OF THE INVENTION The present invention has been made in view of the above needs, and an object of the present invention is to provide a method and apparatus for manufacturing a semiconductor device that can be manufactured with a commercialized standard on the market, And an object of the present invention is to provide an anti-loosening fastener which can prevent the above-

According to an aspect of the present invention, there is provided a connector comprising: a bolt having a polygonal structure and a first male screw portion; and a first female screw portion having an outer shape of the same size as the head portion and mating with the first male screw portion Wherein the bolt has a recess formed in a longitudinal direction outside the first male threaded portion, a first male threaded portion allowed to pass inwardly, an uneven portion inserted into the recessed portion is formed, and a protruded portion A ratchet bar coupled to the protrusion through a rotation shaft and rotatable in a forward direction together with a nut in a state where one end is in contact with an outer surface of the nut, A washer portion having a stopper for restricting rotation of the ratchet, and a spring for applying a restoring force according to rotation of the ratchet bar; .

Wherein the bolt includes a second female screw portion formed to be recessed along the center of the first male screw portion in the direction of the nut tightening, and the nut has a shape in which the other end portion is blocked, And a second male screw portion is formed at one end thereof to be inserted into the second female screw portion.

Further, the bolt has a pair of coupling grooves formed at positions opposed to each other with respect to the center of the cross section of the first male screw portion, and the nut has a coupling hole formed to expose the coupling groove on the other side And a 'U' -shaped fastening pin having an end inserted into the fastening hole through the fastening hole.

The fastening pin may further include a first elastic body and a second elastic body provided on the inner side of the first female screw portion and the second female screw portion and exhibiting an action force against compression, .

The fastener according to the present invention can be fastened in a conventional manner using a common tool and does not interfere with the construction time and difficulty, but also copes with external forces such as continuous vibration or impact applied to the fastener side, Can be effectively prevented.

FIG. 1 is a perspective view showing a bolt and a washer according to a first embodiment of the present invention, FIG.
FIG. 2 is a perspective view showing an installation of the washer according to the first embodiment of the present invention, FIG.
3 is a front view showing a state of the washer according to the first embodiment of the present invention,
FIG. 4 is a side cross-sectional view showing a structure after coupling a nut according to a second embodiment of the present invention, FIG.
FIG. 5 is a side sectional view showing a structure before coupling a nut according to a second embodiment of the present invention, FIG.
FIG. 6 is a perspective view showing a fastening groove and a fastening hole according to a second embodiment of the present invention. FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the structure of a release preventing fastener of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view showing a bolt and a washer according to a first embodiment of the present invention, FIG. 2 is a perspective view showing an installation of a washer according to the first embodiment of the present invention, and FIG. And FIG.

The fastener according to the present invention includes a bolt 110 having a polygonal head part 111 and a first male thread part 112 and a bolt 110 having an outer shape of the same size as the head part 111, And a nut 120 having a first female threaded portion 121 to be engaged with the threaded portion 112. The hexagonal bolt is usually used in an industrial field and the fastening tool such as a spanner is also adapted to this. It is preferable that a bolt having a hexagonal head and a nut of the same standard are applied, and the embodiments described and the accompanying drawings reflect this.

In the present invention, the bolt 110 is formed with a recessed portion 113 outside the first male threaded portion 112 to prevent rotation of the washer portion 130, which will be described later in the longitudinal direction.

The washer 130 is configured to fit into the first male screw portion 112 before the nut 120 is fastened to the bolt 110 to prevent the nut 120 from being loosened when the nut 120 is fastened. The washer portion 130 fitted to the first male thread portion 112 of the bolt 110 as the first male thread portion 112 can pass therethrough and the recessed portion 131 inserted into the recessed portion 113 is formed, The insertion position is maintained without rotating.

 Although the recessed portions 113 and the concave and convex portions 131 are formed to be opposed to each other in the drawings, one or more than one may be formed depending on the standards of the bolts and the nuts.

In the first embodiment of the present invention, the bolt 110 is provided with the recessed portion 113 in order to prevent the rotation of the washer portion 130 inserted into the bolt 110, The same effect can be obtained by forming concave and convex portions on the bolt 110 and concave portions on the washer portion 130, respectively.

In addition, the washer portion 130 is formed with a protrusion 132 protruding outwardly and provided with a ratchet 134.

The ratchet 134 is in contact with the nut 120 and allows rotation of the nut 120 in one direction, that is, rotation in the fastening direction, and rotation in the reverse rotation direction, The nut 120 is coupled through a rotation shaft 133 and has an inclined surface at one end so as to be in surface contact with the outer surface of the nut.

At this time, an end of the rotation shaft 133 may be provided with an opening intersecting the axial direction and a split pin inserted therein to prevent the ratchet 134 from being separated.

The protrusion 132 is provided with a detent jaw 135 for restricting the rotation of the ratchet 134 in the reverse direction due to the release of the nut 120 and a restoring force applied by rotation of the ratchet 134 A spring 136 is provided to prevent reverse rotation of the ratchet 134 due to external force and to prevent the ratchet 134 from rotating in any direction in the forward direction.

Although one protrusion 132 is formed in the figure, one ratchet 134 is provided. However, when the size of the bolt and nut is large and the protrusion 132 is opposed to the protrusion 132 for a more stable fastening operation, So that two ratchet bars 134 may be formed.

FIG. 4 is a side sectional view showing a structure after a nut is coupled according to a second embodiment of the present invention, FIG. 5 is a side sectional view showing a structure before a nut coupling according to a second embodiment of the present invention, Fig. 6 is a perspective view showing a state of a fastening groove and a fastening hole according to an embodiment.

In the second embodiment of the present invention, in addition to the nut releasing method through the ratchet 134 described above, the rotation of the nut is blocked through the double screw structure and the fastening pin 140.

The bolt 110 includes a second female thread 114 formed in a manner to be recessed along the center of the first male thread 112 in the direction of the fastening of the nut 120, And a second male threaded portion 122 formed at one end of the first female threaded portion 121 so as to be inserted into the second female threaded portion 114 is formed at an end of the first female threaded portion 121, When the bolts 110 are fastened to the bolts 110, the first and second internally threaded portions 112 and 121 are fastened together, and at the same time the second internally threaded portion 114 and the second threaded portion 122 are fastened Combining is done.

At this time, the first elastic body 124 and the second elastic body 116, which are respectively installed inside the first female threaded portion 121 and the second female threaded portion 114 and exhibit an action to resist compression, When the nut is tightened, the first elastic body 124 and the second elastic body 116 are compressed, and frictional force is generated between the combined threads due to their restoring forces, thereby acting as a force for preventing loosening.

In the second embodiment of the present invention, the bolt 110 has a pair of coupling grooves 115 formed at positions opposed to each other with respect to the center of the cross section of the first male screw portion 112, (120) has a fastening hole (123) formed on the other side so that the fastening groove (115) can be exposed.

At this time, the fastening groove 115 has a circular groove shape, and the fastening groove 115 has an arc shape such that the fastening groove 115 is exposed within a certain range even though the nut 120 is rotated. do.

And the end of the 'C' -shaped fastening pin 140 inserted into the fastening hole 123 is inserted into the fastening hole 115 so that the rotation of the nut 120 when the nut 120 is unintentionally loosened And a protrusion 141 having a widened cross section is formed at the end of the coupling pin 140 to firmly hold the coupling pin 140 to prevent unintentional deviation of the coupling pin 140.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art without departing from the scope of the present invention. The scope of the invention should, therefore, be construed in light of the claims set forth to cover all such variations.

110: bolt 111: head portion
112: first male screw portion 113:
114: second female screw portion 115: fastening groove
116: second elastic member 120: nut
121: first female screw portion 122: second male screw portion
123: fastening hole 124: first elastic body
130: washer portion 131: concave /
132: projecting portion 133:
134: Leschbaugh 135: Stopping chin
136: spring 140: fastening pin
141:

Claims (4)

A bolt 110 having a polygonal head part 111 and a first male screw part 112 and a bolt 110 having an outer shape of the same size as the head part 111 and inwardly coupled with the first male screw part 112 And a nut (120) having a first female threaded portion (121)
The bolt 110 is formed with a recess 113 in the longitudinal direction outside the first male screw portion 112,
And a protrusion 132 formed on an outer side of the protrusion 132. The protrusion 132 is formed with a protrusion 132 protruding from the protrusion 132, A ratchet 134 which is coupled through a nut 133 and is rotatable in a forward direction together with a nut in a state where one end of the nut 120 is in contact with an outer surface of the nut 120, A washer portion 130 having a detent 135 for limiting the reverse rotation of the toothbrush 134 and a spring 136 for applying a restoring force according to the rotation of the ratchet 134; Wherein the engaging portion is formed of a metal plate.
The method according to claim 1,
The bolt 110 includes a second female thread 114 formed in a shape of being recessed along the center of the first male thread 112 in the direction of the nut fastening,
The nut 120 has a second male screw portion 122 having one end blocked inside the first female screw 121 and a second male screw 122 inserted into the second female screw 114 Is formed on the outer circumferential surface.
3. The method of claim 2,
The bolt has a pair of coupling grooves 115 formed at positions opposed to each other with respect to the center on the cross section of the first male screw portion 112,
The nut 120 has a fastening hole 123 through which the fastening groove 115 is exposed to the other surface,
And a 'C' -shaped fastening pin (140) having an end inserted through the fastening hole (123) and inserted into the fastening recess (115).
The method of claim 3,
A protrusion 141 having an enlarged cross section is formed at an end of the coupling pin 140,
And a first elastic body (124) and a second elastic body (116) provided inside the first female threaded part (121) and the second female threaded part (114) Loosening fasteners.

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