KR20140006208U - Anti-loose nut set - Google Patents

Abstract

The present invention relates to an anti-loosening nut set, comprising: a nut portion to be fastened to a bolt; And a loosening preventing portion that is tightly fixed to the bolt in contact with the nut portion and resiliently prevents a coil spring installed in the bolt from being loosened against the bolt, wherein a protruding portion is formed at a portion where the nut portion and the loosening- And a concave machining portion corresponding thereto is formed.
According to the present invention, it is possible to improve the characteristics of the anti-loosening by using the elastic member, and the nut portion and the loosening preventing portion are separated from each other and constituted as a set.
Further, according to the present invention, since the coil spring can be easily installed, the manufacturing cost can be reduced.
Furthermore, the anti-loosening nut set of the present invention has an effect of improving the structural efficiency compared to the conventional technique.

Description

An anti-loosening nut set {ANTI-LOOSE NUT SET}

The present invention relates to an anti-loose nut, and more particularly, to an anti-loose nut having improved anti-loose property by using an elastic member, will be.

Numerous screws and nuts are used for construction, main structures, and machine structures.

Even if the screw is fixed by the nut, if some kind of load is applied, the screw may be loosened and the accident may occur.

Recently, the cause of screw loosening is becoming more and more evident, but the effect of various loosening-preventing parts such as spring washers and double nuts is not fully understood. Therefore, there is an increasing demand for an anti-loosening nut.

At present, loosening nuts for various structures are highly recommended for use in terms of protecting the products of their own countries, which are provided with a high royalty and are using foreign products. Therefore, localization research and development is very important and urgent. have.

Particularly, various joints and branching parts in the railway and civil engineering fields are accompanied by train shocks and high-power loosening, which leads to an inconvenience of daily inspection and daily inspection.

Due to the very high price and the use of domestic products, there is a lot of need in many construction and machinery fields due to complicated and demanding demands and additional expenses. However, There is no state.

Meanwhile, Nylock and Security Locknut in the US, Nord Lock and Vip Lock in Sweden, and Hard Lock in Japan are dominating the market for high-performance anti-loose nuts worldwide. However, The economic burden due to high prices, and the cost burden due to the use of 1-3 times.

Many domestic manufacturers generally manufacture nylon insert nuts, U nuts, cast nuts, etc., based on the conventional design of nuts.

Unlike developed countries, domestic technological progress has been stagnant, and new products have not been devised. However, there is a new PowerLex product recently introduced, but this technology also has a disadvantage that once the nut is tightened and unscrewed, the spring is broken and used only once. In addition, since it is an existing one-piece structure, not only the manufacturing cost is too high but also the structure is complicated, so that it is not expected to improve the efficiency compared with the structure.

On the other hand, a technique has been developed for a power clutch nut that can be used many times by disposing a bent portion at the lower end of a coil spring installed therein in a horizontal slot having a height that is at least twice the thickness of the coil spring. However, since this product is also made of an integral structure, the process of disposing the lower bent portion of the coil spring in the horizontal hole formed in the middle of the power clutch nut is very complicated, resulting in an increase in the overall manufacturing cost. .

Therefore, there is a continuing need for a new structure of anti-loose nuts that can lower manufacturing costs.

Korean Patent No. 10-0902061

The object of the present invention is to provide a set of anti-loosening nuts which can improve the characteristics of anti-loosening by using an elastic member and can reduce the manufacturing cost, thereby greatly reducing the price of the product.

The present invention relates to an anti-loosening nut set, comprising: a nut portion to be fastened to a bolt; And a loosening preventing portion that is tightly fixed to the bolt in contact with the nut portion and elastically prevents a coil spring installed in the bolt from being loosened against the bolt, a protrusion is formed in the nut portion, And a concave machining portion corresponding to the projection portion is formed.

Another aspect of the present invention is a nut comprising: a nut portion to be fastened to a bolt; And a loosening preventing portion which is fastened to the bolt and is in contact with the nut portion and elastically prevents the coil spring installed inside from elastically blocking the loosening of the bolt, wherein the loosening preventing portion is formed with a protrusion, And a concave machining portion corresponding to the projection portion is formed.

In order to solve the problem that manufacturing cost increases in the process of manufacturing an integral type anti-loosening nut having a coil spring, the inventor of the present invention has found that the loosening of the loosening- A set of preventive nuts was devised.

According to the present invention, the nut and the loosening preventing portion of the present invention are separated at the manufacturing step but can be fastened together through the protruding portion and the concave processing portion at the mounting step.

A plurality of such protrusions and recesses are disposed at mutually spaced positions, and the protrusions may have the same shape and size.

Particularly, the coil spring has an upper end bent outwardly and a lower end bent downward outwardly, an upper end fixed to the upper end of the coil spring, and a lower end fixed to the upper end of the coil spring, It is preferable to form the horizontal grooves in the horizontal direction.

At this time, if the mounting groove is opened upward, the upper end portion formed in advance may be fixed by inserting from above, or the upper portion of the coil spring without the upper end portion may be bent to form the upper end portion and inserted into the mounting groove It is possible to fix the upper end portion to the mounting groove with ease.

When the horizontal groove is opened downward, the lower end of the coil spring, which is not formed with the lower end, is bent to form the lower end, and at the same time, the horizontal end By inserting into the groove, the lower end can be easily placed in the horizontal groove.

Particularly, although the horizontal groove is a part where it is difficult to locate the lower end of the coil spring in the conventional integral type anti-loose nut, the present invention separates the nut and the loosening preventing portion, so it is very easy to place the lower end in the horizontal groove.

The number of turns of the coil spring installed in the unlocking portion of the present invention should be not less than three revolutions so that it can have sufficient loosening preventing performance and it is convenient that the upper end portion and the lower end portion are located on the opposite side in case of 3.5 revolutions. The greater the number of turns of the coil spring is, the better the anti-loosening effect is, but there is a problem in that it is difficult to separate the nut set from the bolt.

On the other hand, in order for the coil spring to exhibit the anti-loosening performance, the distance between the wire rods of the coil spring is larger than the interval (= pitch) of the nut threads and the inner diameter of the coil spring is smaller than the inner diameter of the nut.

According to the present invention, it is possible to improve the characteristics of the anti-loosening by using the elastic member, and the nut portion and the loosening preventing portion are separated from each other and constituted as a set.

Further, according to the present invention, since the coil spring can be easily installed, the manufacturing cost can be reduced.

Furthermore, the anti-loosening nut set of the present invention has an effect of improving the structural efficiency compared to the conventional technique.

1 is a front view showing a configuration of a release preventing nut set according to an embodiment of the present invention.
2 is a plan view of the nut portion of the embodiment.
Figs. 3 and 4 are side views of Fig. 2 taken along line A and B, respectively.
5 is a plan structural view of the release preventing portion of this embodiment.
Figs. 6 and 7 are side views of Fig. 5 taken in the direction C and D, respectively.
8 is a front sectional view of the coil spring of this embodiment.
9 is a plan view of the coil spring of this embodiment.
10 is a plan view showing a configuration in which the coil spring of this embodiment is disposed.
11 and 12 are left and right side views of Fig.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a front view showing a configuration of a release preventing nut set according to an embodiment of the present invention.

The release preventing nut set 100 of the present embodiment includes a nut 110 and a release preventing portion 120. A coil spring 130 is installed inside the release preventing portion 120. [ FIG. 1 is a partially enlarged view of a coil spring 130 installed inside the unlocking part 120 located at the upper side. Particularly, since the nut portion 110 and the release preventing portion 120 are separated from each other in the release preventing nut set of the present embodiment, a process for joining the upper portion and the lower portion in the process of manufacturing the anti- The coil spring can be installed very easily, and the manufacturing cost can be easily reduced.

Each will be described in detail below.

FIG. 2 is a plan view of the nut portion of the present embodiment, and FIGS. 3 and 4 are side views of FIG. 2 taken along the A and B directions, respectively.

The nut part 110 is fastened to a bolt formed on the outer circumferential surface by a screw thread 110a formed therein and is similar to a general nut in that the outer part has a hexagonal shape so as to be rotated by a wrench or the like in the fastening process.

However, the nut portion 110 of the present embodiment has the protrusion 111 formed on the upper surface thereof so that the nut portion 110 can be fastened with the release preventing portion 120 at the same time. A plurality of the protrusions 111 are disposed at mutually spaced positions on the upper surface of the nut portion 110, that is, two protrusions 111 are disposed. At this time, the protrusions 111 have the same shape and size.

Of course, although such a shape is ideal, one protrusion 111 or three or more protrusions 111 may be provided.

FIG. 5 is a plan view of the release preventing portion of the present embodiment, and FIGS. 6 and 7 are side views of FIG. 5 viewed in the direction C and the direction D, respectively.

The unlocking portion 120 is a portion that is fastened to the bolt together with the nut portion 110 to prevent the nut portion 110 from being loosened. However, the unlocking portion 120 has a structure in which no thread is formed inside, and a coil spring 130 installed in the unlocking portion 120 is fastened to the thread of the bolt.

The unlocking portion 120 of the present embodiment has a plurality of concave portions 123 corresponding to the protrusions 111 formed in the nut portion 110 at the lower portion thereof. Therefore, although the nut 110 and the release preventing portion 120 of the release preventing nut set 100 of this embodiment are separated at the manufacturing stage, the nut portion 110 and the release preventing portion 120 are fastened together through the protruding portion 111 and the concave processing portion 123 can do.

Fig. 8 is a front sectional view of the coil spring of this embodiment, and Fig. 9 is a plan view thereof.

The coil spring 130 is a spring formed by winding wire members of various cross sections in the form of a coil having a gap. Even if the distance between the wire rods and the inner diameter of the coil spring is changed, the coil spring 130 returns to its original shape by the elastic force of the coil spring 130 itself.

The coil spring is located inside the unblocking portion 120 and is fastened to the thread of the bolt. The inner diameter of the coil is larger than the inner diameter of the nut portion 110 formed with the threaded portion (= the diameter of the bolt 110) . When the bolts are fastened to the coil springs 130, the spacing between the coil springs 130 is reduced and the diameter of the coil springs 130 is increased, thereby generating tension and preventing the bolts from rotating in opposite directions.

The coil spring 130 of the present embodiment is fixed to the unwind prevention portion 120 through the upper end portion 131 and the lower end portion 132 bent outward at the upper and lower end portions.

First, the unlocking portion 120 is provided with a mounting groove 121 at an upper portion thereof and a horizontal groove 122 at a lower portion thereof for fixing the coil spring 130.

The fixing groove 121 is a portion for fixing the upper end 131 of the coil spring 130. The upper end 131 of the coil spring 130 is moved by forming a groove corresponding to the width of the wire member constituting the coil spring 130 .

In this case, when the upper portion of the mounting groove 121 is formed to be opened, the upper end 131 formed in advance may be fixed by inserting from above, or the upper portion of the coil spring without the upper end 131 may be bent, The upper end 131 can be fixed to the mounting groove 121 by inserting the upper end 131 into the mounting groove 121 at the same time.

The horizontal groove 122 is an elongated horizontal groove in which the lower end 132 of the coil spring 130 is located. The horizontal groove 122 has an upper end 131 and a lower end 132, which are formed by rotating the coil spring 130 when the bolt is fastened. Lt; RTI ID = 0.0 > 132 < / RTI >

Further, since the spacing between the wire rods of the coil spring 130 is increased while fastened to the bolt, the horizontal groove 122 should be formed to a sufficient depth.

When the lower end of the horizontal groove 122 is opened so that the lower end 132 is inserted into the horizontal groove 122 from the lower side or the lower end 132 is not formed, The lower end 132 can be positioned in the horizontal groove 122 by bending the lower portion of the lower end 132 to form the lower end 132 and inserting the lower end 132 into the horizontal groove 122.

Particularly, since the conventional integral type anti-loosening nut is a through-hole space in which the lower end portion of the coil spring is positioned at the center portion of the body, the process of positioning the lower end bent outward in the manufacturing process is very complicated. On the other hand, in the present embodiment, not only the nut portion and the release preventing portion are separated but also the lower end portion 132 of the coil spring 130 is positioned in the horizontal groove 122 which is opened downward, There is a losing effect.

The height of the release preventing portion 120 and the positions of the mounting groove 121 and the horizontal groove 122 are determined according to the number of coils which are the number of rotations of the coil spring 130. In this embodiment, ) Is 3.5 revolutions. In this embodiment, the upper end 131 and the lower end 132 are oriented in the opposite direction to each other so that the mounting groove 121 is formed in the mounting groove 121, And the horizontal grooves 122 are located on different sides.

Fig. 10 is a plan view showing a configuration in which the coil spring of this embodiment is arranged, and Figs. 11 and 12 are left and right side views.

10, a part of the coil spring is shown to be removed to show the position of the coil spring. A portion of the protrusion formed on the nut 110 is inserted into the recessed portion of the release preventing portion 120, .

As shown in the figure, the coil spring 130 installed inside the release preventing portion 120 is disposed such that the upper end portion 131 and the lower end portion 132 face each other. When the coil spring 130 is fastened to the bolt, the position of the upper end portion 131 fixed to the mounting groove 121 is constant, but the lower end portion 132 ) Changes its position counterclockwise when viewed from above. Thus, as shown, the horizontal groove 122 is disposed so that the lower end 132 can move in a counterclockwise direction.

When the release preventing portion 120 is to be released in the structure of the release preventing nut 100 of the present embodiment, the coil spring 130 is applied to the bolt by applying a counterclockwise force to the lower end portion 132 It is possible to remove the bolt together with the nut portion 110 after removing the elastic force.

As described above, the present embodiment can be reused at least 30 times or more because it has a structure of releasing the tension of the coil spring without damaging the threads of the bolt outer circumferential surface or the inner circumferential surface of the nut portion. Therefore, it is a product with high price competitiveness.

In addition, since the nut portion 110 and the release preventing portion 120 are separated until they are fastened to the bolt, there is a great advantage in solving the problems occurring in the coating process for preventing corrosion as in the past.

According to the anti-loose nut set 100 of the present embodiment in which the nut portion 110 and the loosening preventing portion 120 are separately manufactured and then assembled, the elastic member 130 is used to prevent loosening It is possible to improve the characteristics of the semiconductor device, and it is not necessary to fabricate the semiconductor device as an integrated device.

Also, according to the present embodiment, since the structure has a simple structure, it is possible to expect a structural efficiency improvement over the prior art.

The effect caused by the set of release nuts of the present embodiment will be described in more detail.

First, the economic characteristics obtained by using the release preventing nut set of this embodiment are as follows.

First, unlike existing domestic and overseas technology products, it is possible to use more than 30 times (using existing products 2-3 times), for example, by using a dedicated tool, thereby saving resources, It can also contribute greatly to emission reduction.

Second, in the enterprise level, it is possible to reduce the cost burden due to the import substitution effect, and it is very easy to tighten and loosen by using only the special tool in the world.

Third, we can offer the opportunity to widely promote our parts / materials technology with the world's only technology that can dominate the world market.

Fourth, the use of other tools other than the dedicated tool can be confirmed with the naked eye for the security (security) function, and it can bring a security effect.

Next, the technical ripple effect obtained by using the release preventing nut set of this embodiment will be described.

First, it is possible to provide a complete anti-loosening effect without loosening even in the case of rail-class vibration and more severe vibration or impact.

Second, it is possible to provide a design technology effect for preventing the thread damage due to winding and loosening of the spring and bolt thread.

Third, it is possible to provide a complete anti-loosening effect at any position even in an incomplete fastening state.

Fourth, it is possible to work with only a special tool in the world, and it is possible to provide a free fastening and loosening maintenance effect of the loosening prevention nut.

Taken together, it is expected that the economic / industrial ripple effect obtained by using the set of release preventing nuts of this embodiment is unlimited.

In other words, the world nut market is continuing to increase. Particularly, industrial machinery fields such as a steering device, a transmission, a front axle, a lower arm / knuckle fastening portion, an engine subassembly, an automobile field such as an engine subassembly, a bridge, a transmission tower, a civil engineering field such as a building, a parking facility, a generator, a machine tool, , Defense industry such as airplane, tank, warship, space related product, etc., the economic / industrial ripple effect by the set of loosening nut of this embodiment is expected to be enormous.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined in the appended claims. Accordingly, such modifications and variations are intended to fall within the scope of the appended claims.

100: anti-loosening nut set 110: nut part
110a: thread 111: protrusion
120: release preventing portion 121: mounting groove
122: horizontal groove 123: concave machining part
130: coil spring 131: upper end
132: lower end

Claims (8)

A nut portion 110 fastened to the bolt; And
And a release preventing part (120) which is fastened to the bolt in contact with the nut part (110) and resiliently prevents the coil spring (130) installed inside thereof from elastically releasing the bolt,
The nut portion 110 is formed with a protrusion 111 and the unlocking portion 120 is formed with a concave portion 123 corresponding to the protrusion,
The coil spring 130 has an upper end portion 131 having an outwardly curved upper end portion and a lower end portion 132 having an outwardly curved lower end portion,
A horizontal groove 122 is formed in the lower portion of the unlocking portion 120 to fix the upper end of the unlocking portion 120,
Wherein the mounting groove (121) is opened upward and the horizontal groove (122) is opened downward.
A nut portion 110 fastened to the bolt; And
And a release preventing part (120) which is fastened to the bolt in contact with the nut part (110) and resiliently prevents the coil spring (130) installed inside thereof from elastically releasing the bolt,
A protrusion is formed in the unlocking portion 120, a recessed portion corresponding to the protrusion is formed in the nut portion 110,
The coil spring 130 has an upper end portion 131 having an outwardly curved upper end portion and a lower end portion 132 having an outwardly curved lower end portion,
A horizontal groove 122 is formed in the lower portion of the unlocking portion 120 to fix the upper end of the unlocking portion 120,
Wherein the mounting groove (121) is opened upward and the horizontal groove (122) is opened downward.
The method according to claim 1 or 2,
Wherein a plurality of the protruding portions and the concave machining portions are disposed at positions spaced apart from each other.
The method of claim 3,
Wherein a plurality of protrusions have the same shape and size.
The method according to claim 1 or 2,
Wherein the number of times the coil spring is wound is three or more rotations.
The method of claim 5,
And the number of times the coil spring is wound is 3.5 revolutions.
The method according to claim 1 or 2,
And the spacing between the wire rods of the coil spring is wider than the spacing of the screw threads of the nut.
The method according to claim 1 or 2,
Wherein an inner diameter of the coil spring is smaller than an inner diameter of the nut portion.

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