KR102194640B1 - Bolt assembly reinforced to loose stopping - Google Patents

Abstract

The present invention secures an object by fastening a nut member and a fastening member fastened to the bolt together in the opposite direction to the direction of fastening to the bolt, and snapping between the nut member and the fastening member in a state in which any one of these nut members and fastening members is relaxed. Since the ring is inserted and fastened so that the nut member and the fastening member are fastened in opposite directions to the bolt, the loosening action is achieved, and the snap ring prevents separation from the bolt even by vibration, etc., even if external vibration is applied, the nut member It is possible to increase the effect of preventing loosening because the and fastening members are not released. In particular, the present invention prevents loosening by fitting the snap ring between the nut member and the fastening member so that the operator can easily check whether the snap ring is mounted or detached, thereby enhancing the marking effect.

Description

Bolt assembly with enhanced anti-loosening function {BOLT ASSEMBLY REINFORCED TO LOOSE STOPPING}

The present invention relates to a bolt assembly with a reinforced anti-loosening function, and more particularly, a nut member and a fastening member fastened in a direction opposite to the direction of fastening to the bolt are fastened together to the bolt, and then any one of the nut member and the fastening member The nut member and the fastening member are opposite to each other because a snap ring is inserted between the nut member and the fastening member so as to prevent loosening by unscrewing the member of the nut member and the fastening member to prevent loosening by applying frictional force to the bolt in opposite directions. It is possible to prevent the frictional force applied in the direction from being released through the snap ring, and at the same time, it is possible to increase the marking effect by removing or installing the snap ring.

A bolt is a basic mechanical element that fixes building materials or mechanical parts. A bolt is processed by processing a male screw on the outer periphery of a round bar, and the male screw is directly fastened to fasten and fix building materials or mechanical parts, or After inserting it through, tighten the nut to fix it.

On the other hand, when a nut is fastened to a bolt to fasten a building material or a mechanical part, if vibration is applied to the building material or a mechanical part from time to time, the bolt and the nut may become loose and lead to a major accident. Accordingly, in order to prevent the bolt and nut from being loosened, a bolt is configured including a loosening prevention structure as shown in (Patent Document 1) below.

(Patent Document 1) Korean Patent Registration No. 1 779060

It relates to a bolt assembly having an anti-loosening nut, and more particularly, by providing a pair of anti-loosening nuts that are moved on the male thread pitch of the bolt so that the pair of anti-loosening nuts connect a pair of adjacent male threads of the bolt. The present invention relates to a bolt assembly having an anti-loosening nut which is spread to both sides and compressed to prevent loosening of the bolt through rotational restriction of the bolt. To this end, a bolt including a first male thread; A first nut having a first female thread screwed to the first male thread of the bolt, and having a second male thread formed on an outer circumferential surface thereof in a direction opposite to the first male thread; A second female thread that is screwed with the second male thread of the first nut is formed, and a second female thread corresponding to the first female thread is formed in the center, but the first male thread is screwed through the first female thread. Nut: It is configured to include, and the depth of the groove of the female screw to prevent loosening is formed deeper than that of the first male screw, so that a gap occurs between the first male screw and the female screw to prevent loosening, and the first female screw and It is configured so that no clearance occurs between the first male threads, and grooves and protrusions are formed on opposite surfaces of the first nut and the second nut to be inserted into each other. Is formed alternately at regular intervals, and the second nut is separated from the first nut while being rotated in the loosening direction with respect to the first nut, and the protrusion is in close contact with the opposite surface of the first nut and By pushing the second nuts to each other, a spaced state between the first nut and the second nut is forcibly maintained, and the female thread for preventing loosening of the second nut is moved in the loosening direction of the second nut on the gap with the first male thread It provides a bolt assembly having an anti-loosening nut, characterized in that the rotation of the bolt is restrained by pressing the external thread to prevent loosening of the bolt.

However, such an existing anti-loosening bolt assembly has the following problems.

(1) In the conventional bolt assembly, a second nut is fastened to the threaded part, and then a first nut is fastened to the threaded part and the second nut, so that the threaded part, the first nut, and the second nut are respectively screwed together. Fasten fastening. At this time, the first screw and the second screw are formed with protrusions and grooves on the faces facing each other, and the protrusion inserted in the groove when the first nut and the second nut are fastened is forcibly inserted between the first nut and the second nut. To prevent loosening.

(2) At this time, in the existing anti-loosening bolt assembly, there is a concern that the first nut or the second nut rotates and loosens as vibration is applied, and the loosening of this nut causes the protrusion between the first nut and the second nut to become loose again. There is a risk of losing the function of preventing loosening while being inserted into the groove.

(3) In particular, if the protrusion length of the protrusion is too long, interference occurs when rotating the first nut and the second nut, making it impossible to rotate the first nut or the second nut. If the protrusion length is too short, The first nut and the second nut can be easily released because the second nut is not tightly pinched.

(4) In addition, the combination of the bolt and the nut may cause a tolerance in the design or manufacturing process, and it acts as a gap when fastening and combining with such a tolerance. This makes it difficult or impossible to perform the anti-loosening function.

Korean Patent Registration No. 1 779060 (Registration Date: 2017.09.11)

The present invention is in consideration of these points, and the nut member and the fastening member fastened to the bolt together in the opposite direction to the bolt fastening to fix the object, and the nut member in a state in which any one of the nut member and the fastening member is relaxed. Since the snap ring is inserted between the and the fastening member so that it does not fall out, the nut member and the fastening member are fastened to the bolt in opposite directions to achieve a loosening action.At this time, the snap ring prevents separation from the bolt even by vibration, etc. An object thereof is to provide a bolt assembly capable of enhancing an effect of preventing loosening since the nut member and the fastening member are not released even when vibration is applied.

In particular, the present invention prevents loosening by inserting the snap ring between the nut member and the fastening member so that the operator can easily check whether or not the snap ring is installed or detached, thereby enhancing the marking effect. Another purpose is to provide a bolt assembly with enhanced protection.

Bolt assembly reinforcing the loosening prevention function according to the present invention for achieving this object, the bolt 100; A nut member having a container shape and having a first female screw 210 on the bottom that engages with the bolt 100 and a second female screw 220 that is larger than the nominal diameter of the first female screw 210 on the inner circumferential surface (200); A fastening member 300 fastened to the bolt 100 and the second female screw 220; And a snap ring 400 that is fitted between the nut member 200 and the fastening member 300 so as not to fall out; including; a rotation direction for fastening the second female screw 220 to the fastening member 300 It is made in the opposite direction to the rotational direction in which the first female screw 210 and the bolt 100 are fastened; the snap ring 400 is the bolt 100 after first fastening the nut member 200 and the fastening member 300 ) Between the nut member 200 and the fastening member 300 by loosening any one of the nut member 200 and the fastening member 300 together with each other to engage with the bolt 100 in opposite directions, and then between the nut member 200 and the fastening member 300 It is fitted so as not to fall out; and the second female screw 220 is formed to be smaller than the pitch of the first female screw 210.

In particular, the fastening member 300, but formed in a cylindrical shape, a female screw 310 formed to be fastened to the bolt 100 in the inner circumference; A male screw 320 formed on the outer periphery to be fastened to the second female screw 220; And a flange 330 formed to forcibly press the snap ring 400 to face the nut member 200 on one side.

Finally, the second female screw 220 is characterized in that it is 1/2 of the pitch of the first female screw 210.

The bolt assembly with enhanced anti-loosening function according to the present invention has the following effects.

(1) A nut member and a fastening member that are fastened in the opposite direction to the bolt fastening direction are fastened to the bolt together, and the nut member and fastening member are loosened to fasten to the bolt in opposite directions, and a snap ring between them. Since the nut member and the fastening member fastened to the bolt in opposite directions are not disengaged due to the snap ring, it is possible to prevent the nut member and the fastening member from disengaging from the bolt even if external vibrations are applied. have.

(2) In other words, since the nut member and the fastening member are pushed outward with respect to the snap ring, respectively, and fastened to the bolt, the bolt is loosened by preventing the nut member and the fastening member from being disengaged by being caught in the snap ring and getting close to each other. The phenomenon can be prevented.

(3) In addition, some gaps occur due to design errors or manufacturing errors between the nut member and the fastening member and the bolt. Even if such gaps occur, the snap ring pushes the nut member and the fastening member in the opposite direction outward. Since it is fastened to the bolt, it is possible to prevent the nut member or the fastening member from loosening from the bolt, since the nut member and the fastening member are always reversely fastened to the bolt and fastened so that the snap ring is not loosened.

(4) Therefore, if the snap ring does not come off between the nut member and the fastening member, the fastening of the nut member and the fastening member fastened in the opposite direction is not loosened, so that the loosening prevention effect can be maintained.

(5) On the other hand, if the snap ring is inserted between the nut member and the fastening member like this, it can be seen that the nut member and the fastening member are pushed in the opposite direction outward. Therefore, it is easy to prevent loosening by installing the snap ring. You can tell whether it is or not.

(6) In particular, since the operator can easily check whether the snap ring is mounted, the marking effect can be further enhanced.

[Fig. 1] is a cross-sectional view showing a fastening state of a bolt assembly with enhanced anti-loosening function according to the present invention.
[Fig. 2] is an exploded perspective view to show the configuration of a bolt assembly with enhanced anti-loosening function according to the present invention.
3 is a cross-sectional view showing a state in which the nut member and the fastening member according to the present invention are coupled.
4 is a cross-sectional view showing a state in which a nut member and a fastening member coupled according to the present invention are fastened to a bolt.
[Fig. 5] is a cross-sectional view showing a state in which any one of the nut member and the fastening member fastened to the bolt according to the present invention is relaxed.
[FIG. 6] is a cross-sectional view showing a state in which a snap ring is attached between the nut member and the fastening member in a state in which any one of the nut member and the fastening member is relaxed according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings. Prior to this, terms or words used in the specification and claims should not be construed as being limited to their usual or dictionary meanings, and the inventor should appropriately define the concept of terms in order to describe his own invention in the best way. It should be interpreted as a meaning and concept consistent with the technical idea of the present invention according to the principle that it can be.

Therefore, the embodiments described in the present specification and the configurations shown in the drawings are only one of the most preferred embodiments of the present invention, and do not represent all the technical spirit of the present invention, and thus various equivalents that can replace them at the time of the present application And it should be understood that there may be variations.

(Configuration)

The bolt assembly with reinforced anti-loosening function according to the present invention includes a bolt 100, a nut member 200, a fastening member 300, and a snap ring 400, as shown in FIGS. 1 to 6 do.

At this time, the nut member 200 and the fastening member 300 are fastened in a direction opposite to the direction of fastening to the bolt 100 so as to be fastened together, and the nut member 200 and the fastening member 300 are fastened together. After fastening to the bolt 100, the nut member 200 and the fastening member 300 are relaxed to create a gap, and then the snap ring 400 is inserted so as not to fall out therebetween, so that it is fastened with the nut member 200. The member 300 is pushed outward based on the snap ring 400 and fastened to the bolt 100 in opposite directions to increase repulsive force to obtain an effect of preventing loosening.

At this time, since the snap ring 400 is able to prevent the nut member 200 and the fastening member 300 fastened to the bolt 100 in the opposite direction from being released, even if vibration is applied, the snap ring 400 It is possible to increase the effect of preventing loosening by preventing the ring 400 from falling out.

In addition, since the snap ring 400 is inserted between the nut member 200 and the fastening member 300 to prevent loosening, the snap ring 400 is not inserted or removed from the bolt assembly according to the present invention. It is possible to easily check and mark whether it is in a loosening prevention state by looking at the inserted state.

Hereinafter, this configuration will be described in more detail with reference to the accompanying drawings.

<Bolt>

Bolt 100, as shown in [Fig. 1] and [Fig. 2], uses one manufactured by a conventional technique used to fit and fix an object to be fastened and fixed.

At this time, the bolt 100, as shown in [FIG. 1] and [FIG. 2], may be configured to have a head on one side to tighten the bolt 100 with a tool, or may be a tanned bolt without a head.

In addition, the bolt 100 is shown as an example in which the head is manufactured in the form of a hexagonal bolt in [Fig. 1] and [Fig. 2], but it is not limited thereto and may be manufactured in various shapes such as a disk or a cylindrical shape.

<Nut member>

The nut member 200 is configured to be simultaneously fastened to the bolt 100 and the fastening member 300 to be described later, as shown in FIGS. 1 to 3.

To this end, the nut member 200 is manufactured in a container shape as a whole, as shown in FIGS. 1 to 3. In addition, a first female screw 210 is formed to fasten the bolt 100 to the bottom of the container shape.

In addition, in the nut member 200, as shown in Figs. 1 to 3, a second female screw 220 is formed in the inner periphery of the container shape. Here, the second female screw 220 is manufactured so that the first female screw 210 and the center line thereof coincide with the above-described first female screw 210, but the fastening direction is opposite to the first female screw 210 described above. This is, when pre-fastening the nut member 200 to the fastening member 300 to be described later as shown in [Fig. 3], the nut member 200 and the fastening member 300 integrally fastened to the bolt 100 This is to make the rotational direction of the nut member 200 and the fastening member 300 be opposite to the rotational direction of fastening the nut member 200 and the fastening member 300 into one.

At this time, the second female screw 220, as shown in [Fig. 1] to [Fig. 3], is manufactured to have a larger nominal diameter than the first female screw 210 described above. Here, the "nominal diameter" refers to the diameter that becomes the standard dimension of the outer diameter of the screw, and the male thread represents the outer diameter and the female thread represents the valley diameter, respectively.

On the other hand, in a preferred embodiment of the present invention, it is preferable to use the second female screw 220 made smaller than the pitch of the above-described first female screw 210, as shown in FIG. 3. This is to prevent loosening by supporting the nut member 200 and the fastening member 300 engaged in opposite directions to the bolt 100 with a greater rotation torque than the nut member 200 and the fastening member 300 because the smaller the pitch, the greater the rotation torque.

At this time, the second female screw 220 is manufactured with a smaller pitch than the first female screw 210, and most preferably, by manufacturing the second female screw 220 with a length of half the pitch of the first female screw 210, 2 It is possible to prevent loosening by supporting the nut member 200 and the fastening member 300 engaged in opposite directions with the rotation torque of the ship.

<fastening member>

The fastening member 300 is a member that is simultaneously fastened to the bolt 100 and the nut member 200 and meshed together as shown in FIGS. 1 to 3.

As such, the fastening member 300 is configured to be engaged with the bolt 100 and the nut member 200 as shown in FIGS. 1 to 3. The fastening member 300 is generally manufactured in a cylindrical shape so that it can be simultaneously fastened to the bolt 100 and the nut member 200 described above.

At this time, the fastening member 300 made of a cylinder shape is manufactured to be fastened to the bolt 100 by forming a female screw 310 on the inner circumference, as shown in Figs. 1 to 3, and a male screw on the outer circumference By manufacturing 320, it is manufactured to be fastened to the second female screw 220 described above. In particular, the male screw 320 is formed to be opposite to the rotation direction of the bolt 100, so that the fastening member 300 and the nut member 200 are rotated in a direction opposite to the fastening direction of the bolt 100, as described above. So that it can be fastened.

On the other hand, the fastening member 300 is formed to protrude a flange 330 on one side as shown in [Fig. 1] to [Fig. 3]. At this time, the flange 330 is in close contact with each other when the snap ring 400, which will be described later, is inserted between the nut member 200 and the fastening member 300 so as not to fall out to prevent separation, and the fastening member 300 It is possible to push out the snap ring 400 as a reference.

<Snap Ring>

The snap ring 400 is attached between the nut member 200 and the fastening member 300 described above, as shown in Figs. 1 and 2.

At this time, the snap ring 400, as shown in [Fig. 1] and [Fig. 2], typically in the present invention, a male screw formed on the fastening member 300 by being sandwiched between the nut member 200 and the fastening member 300 ( 320), so that it does not come off. The snap ring 400 is formed in a "C" shape as a whole so that it can be inserted so that it does not fall out, and by forming through the removal holes 410 at both ends or in the middle of the length, the snap ring 400 from the male thread 320 is sometimes When it is necessary to remove it, it can be easily removed by inserting a tool or the like.

The snap ring 400 is manufactured in an arc shape slightly larger than a semicircle based on the diameter of the male screw 320, and the snap ring 400 manufactured in this way is forcibly inserted into the male screw 320, making it easy to vibration, etc. It is manufactured so that it can maintain the installed state without falling out. Of course, both ends of the snap ring 400 may be configured by adding protrusions that do not deviate from the male screw 320 on surfaces facing each other.

Looking at the mounting process of the bolt assembly with enhanced anti-loosening function according to the present invention made as described above is as follows.

<Installation process>

First, as shown in FIG. 3, the nut member 200 and the fastening member 300 are fastened into one. At this time, the fastening direction of the second female screw 220 and the male screw 320 formed on the nut member 200 and the fastening member 300 is a bolt 100 by integrating the nut member 200 and the fastening member 300 together. The fastening direction and the rotation direction when fastening to are opposite.

In the drawing, the nut member 200 is fastened to the fastening member 300 and shows a completely close contact. However, in some cases, the nut member 200 does not completely contact the fastening member 300 and has a slight gap. It can also be used by fastening it so that it can be used.

Subsequently, as shown in FIG. 4, the object to be fixed is fixed by fastening the nut member 200 and the fastening member 300 joined together from left to right of the bolt 100. The drawing shows a state in which the fastening member 300 is integrally fastened to the bolt 100 with the nut member 200 so as to face the object to be fixed. However, on the contrary, the nut member 200 may be integrally fastened to the bolt 100 with the fastening member 300 facing the object to be fixed.

Accordingly, the first female screw 210 and the female screw 310 are fastened to the bolt 100 to be in close contact with the bolt 100 to be fixed. At this time, the first female screw 210 and the female screw 310 are the bolt 100 The fastening direction fastened to is opposite to the direction in close contact with the second female screw 220 and the male screw 320 described above.

Next, as shown in FIG. 5, among the nut members 200 and the fastening members 300 mounted to be engaged with each other, the nut member 200 is relaxed opposite to the direction facing the fastening member 300. As described above, the relaxation of the nut member 200 is performed within a range as much as a gap generated by design tolerances or manufacturing tolerances of the nut member 200, the fastening member 300, and the bolt 100. In particular, since the nut member 200 is made in a direction away from the fastening member 300 as a result of the relaxation, the first female screw 210 and the female screw 310 described above are in opposite directions (distance away from the bolt 100). By tightening, the effect of preventing loosening is increased.

Finally, as shown in Fig. 6, the snap ring 400 is inserted between the nut member 200 and the fastening member 300 so as not to fall out. Accordingly, the snap ring 400 is sandwiched between the nut member 200 and the fastening member 300, which is in close contact with the bolt 100 while pushing outward to each other to generate frictional force, and the snap ring 400 fitted in this way is a bolt ( The nut member 200 or the fastening member 300 fastened to 100) is prevented from being loosened in a direction closer to each other, thereby obtaining an effect of preventing loosening.

In the present invention made as described above, in a state in which the nut member and the fastening member are fastened in the opposite direction to the bolt, the nut member and the fastening member are fastened together to the bolt to fix the object, and then the nut member and the fastening member are separated from each other. By loosening and then inserting the snap ring therebetween so as not to come off, it is possible to prevent loosening of the fastening state while the nut member and the fastening member are fastened to the bolt in an outward direction based on the snap ring.

In addition, since the present invention is configured to prevent loosening by inserting a snap ring between the nut member and the fastening member as described above, it is possible to easily check whether or not loosening is easily prevented through insertion of the snap ring.

100: bolt
200: nut member
210: first female thread
220: second female thread
300: fastening member
310: female thread
320: male thread
330: flange
400: snap ring

Claims (3)

Bolt 100; A nut member having a container shape and having a first female screw 210 on the bottom that engages with the bolt 100 and a second female screw 220 that is larger than the nominal diameter of the first female screw 210 on the inner peripheral surface (200); A fastening member 300 fastened to the bolt 100 and the second female screw 220; And a snap ring 400 fitted between the nut member 200 and the fastening member 300 so as not to fall out; including,
The rotation direction in which the second female screw 220 is fastened with the fastening member 300 is made opposite to the rotation direction in which the first female screw 210 and the bolt 100 are fastened,
The snap ring 400 first fastens the nut member 200 and the fastening member 300 and then relaxes any one of the nut member 200 and the fastening member 300 fastened together with the bolt 100 to each other. After fastening to the bolt 100 so as to be engaged in opposite directions, the nut member 200 and the fastening member 300 are fitted and installed so as not to fall out,
The second female screw 220 is formed at 1/2 of the pitch of the first female screw 210
The fastening member 300 is formed in a cylindrical shape, but the female screw 310 formed to be fastened to the bolt 100 in the inner circumference; A male screw 320 formed on the outer periphery to be fastened to the second female screw 220; And a flange 330 formed to face the nut member 200 on one side and press the snap ring 400 forcibly.
delete In claim 1,
The second female screw 220 is
Bolt assembly with reinforced anti-loosening function, characterized in that 1/2 of the pitch of the first female thread 210.

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