KR101669549B1 - Anti-releasing bolt capable of disengagement - Google Patents

Abstract

The present invention relates to a bolt tightening device using a spring to prevent a bolt from being loosened and to release a bolt after unfastening it, The present invention relates to a bolt-type release preventing fastener. According to the present invention, there is provided a bolt body having a head portion and a leg portion having a threaded portion; A release preventing member provided to prevent the bolt body from being loosened in the direction of unbinding; And an engaging releasing means provided on the bolt body and the releasing preventing member to release the releasing prevention of the releasing preventing member.

Description

ANTI-RELEASING BOLT CAPABLE OF DISENGAGEMENT "

The present invention relates to a bolt-type unfastening fastener, and more particularly, to a bolt-type unfastening fastener using a spring to secure the fastening of a bolt and prevent unfastening of a bolt, The present invention relates to a bolt-type unfastening fastener capable of being disengaged and capable of re-using a bolt.

In general, a bolt is used as a fastener for joining two objects together with a separate nut, or for fastening another body through a nut made of a thread formed in the body itself.

If the fastening of the bolt is subjected to the long-time vibration in the above two cases, the fastening state at the time of fastening can not be maintained, and the fastening part of the bolt slips and the fastening progresses.

Particularly, mechanical bolts subjected to severe vibration, foundation bolts for fixing fixtures such as railway rails and river bridges, as well as the risk of accidents caused by the loosening of these bolts, In fact.

In order to solve such a problem, a bolt has been proposed which is prevented from being loosened.

1 is a perspective view showing a configuration of a release preventing bolt according to the prior art.

Korean Patent Laid-Open Publication No. 10-2001-0017272 proposes a loosening prevention bolt. As shown in Fig. 1, a bolt is provided with a screw thread formed on the outer circumferential surface thereof, and a normal fastening The threaded bar 11 is formed by forming a spring fixing groove 13 at the tip end thereof and is formed with a predetermined length at one end to be fixed to the spring fixing groove 13 of the screw rod , And a coil spring (20) fixed to the spring fixing groove (13) of the screw rod and inserted into the threaded hole of the screw rod (11).

Such a conventional release prevention bolt makes the bolt firmly fastened and prevents the bolt from loosening.

However, such a loosening prevention bolt has an effect of preventing loosening, but it has a problem that it can not be joined once it is combined. In other words, in the case of joining the joining objects joined with the loosening prevention bolts due to the erroneous operation, the loosening prevention bolts can not be loosened, so that the joining object can not be used or a complicated unblocking operation is required.

In addition, the conventional release preventing bolts are difficult to maintain and repair the structure, and the bolts can not be reused.

(Document 1) Korean Patent Laid-Open Publication No. 10-2001-0017272 (March 23, 2001) (Document 2) Korean Patent Registration No. 10-0701782 (Mar. 24, 2007)

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned problems occurring in the prior art, and it is an object of the present invention to provide a bolt tightening device, a bolt fastening device, It is an object of the present invention to provide a bolt-type unfastening fastener which can be disassembled and capable of re-using the bolt.

In addition, the present invention can be manufactured with a simple structure, thereby reducing machining costs and manufacturing costs, increasing the durability of parts, and enabling the maintenance of the structure, Another object is to provide a bolt-type release preventing fastener.

The present invention has been made in view of the above problems, and it is an object of the present invention to provide an apparatus and method for controlling the same.

According to an aspect of the present invention, there is provided a bolt body including a head portion and a leg portion having a threaded portion. A release preventing member provided to prevent the bolt body from being loosened in the direction of unbinding; And an engaging releasing means provided on the bolt body and the releasing preventing member to release the releasing prevention of the releasing preventing member.

According to the present invention, the head portion of the bolt body is formed with a wrench groove, and the unlocking member is formed of a coil spring. The unlocking means is formed on the coil spring to rotate clockwise or counterclockwise A clutch means formed on the bolt body for interlocking with the clutch means in a clockwise or counterclockwise rotation of the bolt body, the clutch means being interlocked with the clockwise rotation so as to contract or expand the coil spring, And a selection means.

In the present invention, the clutch means includes a reverse lock clutch key that extends inwardly from one end of the coil spring, a reverse switch rod extending on a center axis line of the coil spring at an end of the clutch key, Wherein the linkage selection means comprises a reverse lock clutch key seating groove formed on one end face of the leg portion so that the reverse lock key is inserted and seated, A reverse clutch key first seating groove and a second seating groove formed at a predetermined pitch interval in the threaded portion, and a rod guide hole penetratingly formed on the center axis of the bolt body.

In the present invention, it may further comprise a reverse switch movement unit for moving the reverse switch rod.

In the present invention, the backward switch movement unit may include a thread forming portion formed in a rod guide hole of the bolt body, and a screw coupling member screwed to the thread forming portion.

In the present invention, the screw engagement member may be formed of a tongue bolt.

In the present invention, it is preferable that the bolt body is formed with a wrench groove communicating with the rod guide hole, and the reverse switch rod is formed longer than the coil spring.

According to the bolt-type unfastening fastener according to the present invention, the fastening of the bolt can be made strong by using the characteristics of the spring, and the bolt can be unfastened, The structure can be separated and the bolt can be reused, thereby improving the economical efficiency.

Further, according to the present invention, it is possible to manufacture with a simple configuration, thereby reducing the machining cost and the production cost, increasing the durability of parts, and maintaining and repairing the structure, thereby reducing the maintenance cost have.

The effects of the present invention are not limited to those mentioned above, and other solutions not mentioned may be clearly understood by those skilled in the art from the following description.

1 is a perspective view showing a configuration of a release preventing bolt according to the prior art.
2 is a cross-sectional view illustrating the configuration of a bolt-type release preventing fastener that can be disengaged according to the present invention.
3 is a cross-sectional view showing a part of the structure of the release preventing member and the engagement releasing means constituting the bolt-type release preventing fastener which can be disengaged according to the present invention.
Fig. 4 is a sectional view showing a part of the bolt member and the disengagement means constituting the bolt-type unfastening fastener which can be disengaged according to the present invention.
FIG. 5 is an explanatory view for explaining the principle of preventing loosening of a loosening preventing member in a bolt-type loosening preventing fastener that can be disengaged according to the present invention.
FIG. 6 is a cross-sectional view illustrating a state in which the reverse prevention clutch key of the disengagement means is released in order to release the engagement in the bolt-type release preventing fastener according to the present invention.
7 is a cross-sectional view illustrating a state in which a bolt body is disengaged in a bolt-type unfastening fastener that can be disengaged according to the present invention.
8 is an explanatory view for explaining the unlocking principle of the unlocking member in the bolt-type unlocking fastener which can be disengaged according to the present invention.
9 is a cross-sectional view illustrating a bolt-type unfastening fastener that can be disengaged according to a second embodiment of the present invention.
10 is a cross-sectional view illustrating a state in which the reverse prevention clutch key of the disengagement means is released in order to release the engagement in the bolt-type release preventing fastener that can be disengaged according to the present invention.
11 is a cross-sectional view illustrating a state in which the bolt body is disengaged in a bolt-type unfastening fastener that can be disengaged according to the present invention.

Further objects, features and advantages of the present invention will become more apparent from the following detailed description and the accompanying drawings.

Before describing the present invention in detail, it is to be understood that the present invention is capable of various modifications and various embodiments, and the examples described below and illustrated in the drawings are intended to limit the invention to specific embodiments It is to be understood that the invention includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, the terms "comprises" or "having" and the like refer to the presence of stated features, integers, steps, operations, elements, components, or combinations thereof, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Further, terms such as " part, "" unit," " module, "and the like described in the specification may mean a unit for processing at least one function or operation.

In the following description of the present invention with reference to the accompanying drawings, the same components are denoted by the same reference numerals regardless of the reference numerals, and redundant explanations thereof will be omitted. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a bolt-type unfastening fastener according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

First, a bolt-type release preventing fastener according to a first preferred embodiment of the present invention is described with reference to FIGS. 2 to 4. FIG. FIG. 2 is a cross-sectional view illustrating the structure of a bolt-type unfastening fastener according to the present invention. FIG. 3 is a perspective view of a loosening preventing member constituting a bolt- 4 is a cross-sectional view showing a part of the configuration of the bolt member and the disengaging means constituting the bolt-type unfastening fastener capable of being disengaged according to the present invention.

2 to 4, the bolt-type unfastening fastener according to the first embodiment of the present invention includes threaded legs 110 and legs 110 at one end thereof, A bolt body 100 formed with a plurality of bolts 120; A loosening preventing member 200 provided on the leg 110 of the bolt body 100 to prevent loosening of the bolt body 100 in the unlocking direction; And an engagement release means provided on the bolt body 100 and the release preventing member 200 to release the release preventing of the release preventing member 200. [ The reference numeral 400 is a nut.

The bolt body 100 is formed of a conventional bolt. The head 120 may have a polygonal cross-section. When the bolt body 100 is formed in a circular cross-section, a polygonal wrench groove is formed on the surface of the head. Of course, in the bolt body 100, the head part 120 may have a polygonal cross section and a wrench groove may be formed on the surface of the head part. In the figure, the bolt body shows a case where a polygonal groove is formed in the head portion having a circular cross section.

The release preventing member 200 is formed of a coil spring. Here, the outer diameter of the release preventing member 200 is formed to be substantially similar to the inner diameter of the nut.

The disengagement means includes a clutch means 310 formed on the coil spring serving as the unlocking member 200 to shrink or expand the coil spring in conjunction with clockwise or counterclockwise rotation of the bolt body 100, And interlock selection means 320 formed in the bolt body 100 and configured to selectively interlock the clockwise or counterclockwise rotation of the clutch means 310. [

3, the clutch means 310 includes a reverse clutch key 311 extending inwardly from one end of the coil spring serving as the release preventing member 200 and a coil spring 311 extending from the end of the clutch key 311, A reverse switch rod 312 extending on the center axis of the spring, and a reverse clutch key 313 extending inward from the other end of the coil spring.

Here, it is preferable that the backward switch rod 312 is formed longer than the length of the coil spring.

4, the interlock selection means 320 includes a reverse lock clutch key seat (not shown) formed on one end face of the leg portion 110 of the bolt body 100 so that the reverse lock key 311 is inserted and seated, A reverse clutch key first seating groove 322 formed in the threaded portion of the leg portion 110 to receive and accommodate the reverse clutch key 313 when the bolt body 100 is advanced, A reverse clutch key second seat groove 323 which is formed in the threaded portion of the bolt body 110 and into which the reverse clutch key 313 is inserted when the bolt body 100 is retracted, And a rod guide hole 324 formed therethrough.

As shown in FIG. 4, it is preferable that the reverse-facing clutch key-receiving recess 321 is formed on a line passing through the center of the leg 110 at one end.

The reverse clutch key first seating groove 322 and the reverse clutch key second key seating groove 323 are formed in the other end side thread portion (that is, the thread portion close to the head portion) of the leg portion, And is formed with a threaded hole that is deeper than the threads of the other threaded portions.

5 to 8, the operation of engaging and disengaging the bolt-type unfastening fastener which can be disengaged according to the first embodiment of the present invention will be described. FIG. 5 is an explanatory view for explaining the principle of preventing loosening of a loosening preventing member in a bolt-type loosening preventing fastener according to the present invention. FIG. 6 is a perspective view of a bolt- Fig. 6 is a cross-sectional view showing a state in which the reverse-direction clutch key of the disengagement means is released in order to disengage the engagement member. FIG. 7 is a cross-sectional view illustrating a state where the bolt body is disengaged in a bolt-type unfastening fastener that can be disengaged according to the present invention, and FIG. 8 is a cross- Fig. 7 is an explanatory view for explaining the principle of unlocking the preventing member.

The operation of the bolt-type unfastening fastener having the above-described structure according to the first embodiment of the present invention is as follows. In the following description, the head portion side is referred to as the front portion and the opposite end portion thereof is referred to as the rear portion in the coil spring as the unlocking member.

The bolt body 100 is coupled to the nut 400 in a state where the coil spring as the unlocking member 200 is positioned in the threaded portion and then the bolt body 100 is rotated counterclockwise 5, the rear portion of the coil spring is extended and the thread portion, the frictional increase and the frictional force are increased, as shown in FIG. 5, so that the backward prevention clutch key 311 is inserted into the reverse- The bolt body 100 is not disengaged from the nut 400 due to interference. At this time, the reverse clutch key 313 is seated in the reverse clutch key first seat groove 322.

When the bolt body 100 is to be unbonded in such a combined state, the bolt body 100 is inserted into the rod guide hole 324 using a predetermined tool to push the backward switch rod 312. As shown in FIG. 6, The reverse lock clutch key 311 integrally formed with the reverse switch rod 312 is also pushed away from the reverse lock key lock groove 321. [

When the bolt body 100 is further rotated in the disengaging direction (counterclockwise direction) in this state, the reverse clutch key 311 is freely rotated and is not restrained by the rotating bolt body 100, The front portion of the coil spring, which is the release preventing member, is contracted by the rotation of the bolt body 100 as shown in FIG. 8, so that the threaded portion 313 is retracted into the reverse clutch key second seat groove 323, The friction is reduced and interference does not occur, so that the bolt body 100 is disengaged from the nut 400.

Next, a bolt-type unfastening fastener that can be disengaged according to a second embodiment of the present invention will be described with reference to FIG. 9 is a cross-sectional view illustrating a bolt-type unfastening fastener that can be disengaged according to a second embodiment of the present invention.

Since the bolt-type unfastening fastener according to the second embodiment of the present invention is basically the same as the bolt-type unfastening fastener of the first embodiment, the same components are denoted by the same reference numerals for the sake of simplicity, The description thereof will be simplified or omitted, and only differences from the first embodiment will be described.

9, the bolt-type unfastening fastener according to the second embodiment of the present invention includes a backward switch rod 312 for moving the backward switch rod 312 in the bolt-type unfastening fastener of the first embodiment described above, And a switch mobile unit 500.

The backward switch movement unit 500 includes a thread forming portion 510 formed in the rod guide hole 324 of the bolt body 100 and a threaded portion 510 screwed to the thread forming portion 510, (520).

Here, the screw-engaging member 520 may be made of a tongue bolt.

The operation of the bolt-type unfastening fastener that can be disengaged according to the second embodiment constructed as described above will be described with reference to Figs. 10 and 11. Fig. FIG. 10 is a cross-sectional view showing a state in which the reverse prevention clutch key of the engagement release means is released to release engagement in a bolt-type release prevention fastener capable of being disengaged according to the present invention, and FIG. 11 is a cross- Sectional view showing a state in which the bolt body is disengaged in a possible bolt-type unfastening fastener.

In the following description, the head portion side is referred to as the front portion and the opposite end portion thereof is referred to as the rear portion in the coil spring as the unlocking member.

The bolt body 100 is coupled to the nut 400 in a state where the coil spring as the unlocking member 200 is positioned in the threaded portion and then the bolt body 100 is rotated counterclockwise 5, the rear portion of the coil spring is extended and the thread portion, the frictional increase and the frictional force are increased, as shown in FIG. 5, so that the backward prevention clutch key 311 is inserted into the reverse- The bolt body 100 is not disengaged from the nut 400 due to interference. At this time, the reverse clutch key 313 is seated in the reverse clutch key first seat groove 322 (see FIG. 2).

In order to disengage the bolt body 100 in this engaged state, when the tongue bolt, which is the screw coupling member 520 located in the rod guide hole 324, is rotated by using a wrench or the like, As shown in FIG. 10, when the forward switch rod 312 is advanced, and thus the rear switch rod 312 located in the rod guide hole 324 and positioned opposite to the screwing member 520 is pushed, The reverse lock clutch key 311 is integrally formed with the reverse switch rod 312 so that the reverse lock clutch key 311 moves away from the reverse lock key lock groove 321.

When the bolt body 100 is further rotated in the disengaging direction (counterclockwise direction) in this state, the reverse clutch key 311 is freely rotated and is not restrained by the rotating bolt body 100, The front portion of the coil spring, which is the release preventing member, is contracted by the rotation of the bolt body 100 as shown in FIG. 11, so that the threaded portion 313 is retracted into the backward clutch key second seat groove 323, The friction is reduced and interference does not occur, so that the bolt body 100 is disengaged from the nut 400.

The second embodiment includes the reverse switch movement unit 500, so that the bolt body 100 can be easily disengaged in a state in which the backward switch rod 312 is kept in the backward state stably.

According to the bolt-type unfastening fastener of the present invention as described above, the fastening of the bolt can be made strong by using the characteristics of the spring, and the bolt can be unfastened, It is possible to separate the object or the structure, and the bolt can be reused, which is advantageous in improving the economical efficiency.

Further, according to the present invention, it is possible to manufacture with a simple configuration, thereby reducing the machining cost and the production cost, increasing the durability of the parts, and maintaining the maintenance of the structure, have.

In other words, the bolt-type loosening fastener of the present invention is composed of two components, namely, the bolt body and the spring coil, and the two components are simple compared with the other loosening prevention bolts and nuts. Therefore, There is an advantage that the durability of the parts is increased due to the simple structure.

Further, the present invention can be applied to a fastening structure in which only a hole and a thread are present without using a nut, and this is advantageous in that it is possible to easily apply a loosening prevention in a structure to which the conventional loosening prevention technology is not applied.

In addition, since the present invention can be easily detached and reused at any time, there is a great advantage in maintenance of the structure, and one of the problems of the structure with the anti-loosening technique is to suppress the maintenance cost, It is advantageous in that it is easy to repair and secures the competitiveness of the product.

The embodiments and the accompanying drawings described in the present specification are merely illustrative of some of the technical ideas included in the present invention. Accordingly, the embodiments disclosed herein are for the purpose of describing rather than limiting the technical spirit of the present invention, and it is apparent that the scope of the technical idea of the present invention is not limited by these embodiments. It will be understood by those of ordinary skill 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.

100: Bolt body
110:
120:
200: Release preventing member
310: clutch means
311: Reverse clutch key
312: Reverse switch load
313: reverse clutch key
320: Interlock selection means
321: Reverse retaining clutch key seating groove
322: reverse clutch key first seat groove
323: reverse clutch key second seat groove
324: rod guide hole
400: nut
500: Reverse switch movement unit
510: thread forming section
520:

Claims (7)

A bolt body having a head portion having a wrench groove and a leg portion having a threaded portion; A release preventing member provided to prevent the bolt body from being loosened in the direction of unbinding; And a releasing means provided on the bolt body and the releasing preventing member to release the releasing prevention of the releasing preventing member,
Wherein the release preventing member comprises a coil spring,
Wherein the coupling release means includes a clutch means formed on the coil spring for interlocking with the clockwise or counterclockwise rotation of the bolt body to shrink or expand the coil spring and a clutch means formed on the bolt body for rotating clockwise Or interlocking selection means configured to selectively interlock with the clutch means in counterclockwise rotation,
Wherein the clutch means comprises a reverse lock clutch key that extends inwardly from one end of the coil spring, a reverse switch rod extending on a central axis line of the coil spring at an end of the clutch key, and a reverse switch rod extending inward from the other end of the coil spring A reverse clutch key,
The interlock selection means includes a reverse lock key recessed groove formed on one end face of the leg portion so that the reverse lock key is inserted and seated, and a reverse clutch key first groove formed in the threaded portion near the head portion at a predetermined pitch, And a rod guide hole penetratingly formed on the center axis of the bolt body,
Bolt-type loosening fastener that can be disassembled.
delete delete The method according to claim 1,
And a reverse switch movement unit for moving the reverse switch rod
Bolt-type loosening fastener that can be disassembled.
The method of claim 4,
The backward switch movement unit
A thread forming portion formed in the rod guide hole of the bolt body, and
And a screw-engaging member screwed into the thread-forming portion
Bolt-type loosening fastener that can be disassembled.
The method of claim 5,
Wherein the screw-engaging member is a screw-
Bolt-type loosening fastener that can be disassembled.
The method of claim 5,
Wherein the bolt body has a wrench groove communicating with the rod guide hole,
The backward switch rod is longer than the length of the coil spring
Bolt-type loosening fastener that can be disassembled.

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