KR20180038303A - Fastening apparatus loosing prevention washer and having this same - Google Patents

Abstract

Disclosed is an anti-loosening washer. The disclosed anti-loosening washer is interposed between a bolt or a nut and an object to prevent a bolt or a nut from being unwound, comprising: a first washer member having twelve first inclined surfaces in a radial direction on one surface thereof, and twelve first stepped protrusion surfaces between the twelve first inclined surfaces; and a second washer member provided on the first washer member so as to overlap with the first washer member, and formed with twelve second inclined surfaces corresponding to the first inclined surfaces on one surface facing the first washer member and twelve second stepped protrusion surfaces between the twelve second inclined surfaces so as to prevent the bolt or the nut from being unwound.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a washer for preventing loosening,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anti-loosening washer which is interposed between a bolt or a nut and an unfixed object to prevent the bolt or the nut from being disengaged and released, and more particularly, And a fastening device having the same.

Generally, bolts and nuts are one of the fastening members widely used in general machinery and construction fields. These bolt nuts are used to fix the defective body by screwing the nut to the bolt after passing the bolt through the body. .

These bolt nuts prevent the bolts or nuts from loosening by interposing a washer between the bolt or nut and the fixture.

In addition, a bolt nut fastening means has been developed and used that prevents loosening through design changes of the bolt nut itself.

Registration Utility Model No. 20-0241791 discloses a bolt with a safety tightening nut. The bolt having the safety tightening nut has an engagement groove formed in the longitudinal direction of the threaded portion of the bolt body so that the engagement protrusion of the washer is hooked. A one-side engagement protrusion is formed on the contact surface of the washer and the nut, State by the one-side engagement step formed at the engagement step of the washer hooked to the engagement groove and the junction of the washer and the nut, so that the structure is not released by the severe impact vibration.

However, Registration Practical Utility Model No. 20-0241791 has the disadvantage that it is impossible to reuse the fastening parts since the screw fastening can not be released in a state where it is once tightened.

In addition, since the bolt had to be formed with a locking groove in the longitudinal direction, there was a drawback that the universal plain bolt could not be used, and the overall structure was complicated, which made it difficult to manufacture.

It is an object of the present invention to provide an unlocking washer having an improved structure in which the structure is simple and the unlocking effect is superior, and a fastening device having the same.

It is another object of the present invention to provide an unlocking washer having an improved shape for reuse and a fastening device having the same.

In order to attain the above object, according to the present invention, there is provided a washer which is interposed between a bolt or a nut and an unfixed object to prevent a bolt or a nut from being unwound, the washer having 12 first inclined surfaces radially on one surface, A first washer member having twelve first step surfaces formed between the first inclined surfaces; And twelve second inclined surfaces corresponding to the first inclined surfaces, and second inclined surfaces corresponding to the first inclined surfaces, wherein the second inclined surfaces are formed on one surface of the first washer member facing the first washer member to prevent the bolt or the nut from loosening, And a second washer member having twelve second abutment surfaces formed between the second inclined surfaces.

Wherein the second inclined surface and the second inclined surface of the second washer member and the first inclined surface and the first inclined surface of the first washer member rotate in the fastening direction of the second washer member with respect to the first washer member, And the second inclined surface is configured to be pressed against the first inclined surface so that the second inclined surface does not exceed the first inclined surface with respect to the rotation of the second washer member in the unlocking direction with respect to the first washer member .

Wherein the first washer member is formed with 12 first grooves so as to be evenly divided on the rim and the second washer member has 12 second grooves formed equally divided on the rim, A tool connecting portion connected to the power tool is formed at a rear end thereof and a nut insertion portion into which a head or a nut of the bolt is inserted is formed at the center of the front end thereof in such a manner that the first groove and the second groove coincide with each other, And a coupling release member formed with two coupling protrusions which are inserted into the first groove and the second groove so as to face each other in both sides of the nut insertion groove.

The fastening device having the unlocking washer according to the present invention is a fastening device that is coupled to a bolt and fixes an unfixed object. The fastening device includes twelve first inclined surfaces radially on one surface and twelve first inclined surfaces between the twelve first inclined surfaces A first washer member having a first stepped surface; And 12 third inclined surfaces corresponding to the first inclined surfaces, and 12 second inclined surfaces corresponding to the first inclined surfaces and a second inclined surface corresponding to the first inclined surfaces, And a third anti-loose nut formed between the third inclined surfaces.

Wherein the first inclined surface and the first inclined surface of the first washer member and the third inclined surface and the third inclined surface of the unlocking nut are engaged with each other with respect to rotation of the unlocking nut in the fastening direction with respect to the first washer member The third inclined surface is configured to be pressed against the first inclined surface, and the third inclined surface is configured not to exceed the first inclined surface with respect to the release direction rotation of the release preventing nut relative to the first washer member .

Wherein the first washer member has 12 first grooves formed equally divided on the rim, a tool connecting portion connected to the power tool is formed at the rear end thereof, a nut insertion groove into which the unlocking nut is inserted at the center of the front end, And a coupling release member having two coupling protrusions formed on both sides of the nut insertion groove to be fitted into the first groove so as to face each other.

The present invention has a simple structure and an effective performance against loosening, and thus, when the structure is manufactured through the unlocking washer and the fastening device having the same, the structure is separated, It has the effect of keeping it.

In addition, since the fastening releasing member is provided, the fastening can be easily released and reused, so that the manufacturing cost can be reduced when the structure is manufactured.

FIG. 1 is a view showing a configuration of a release preventing washer and a fastening device having the same according to an embodiment of the present invention,
FIG. 2 is a view illustrating an example of using an unlocking washer according to an embodiment of the present invention,
Fig. 3 is a view showing a state in which a release member is mounted to release the engagement in the engagement state as shown in Fig. 2,
FIG. 4 is an illustrative view showing the use of a fastening device having a release preventing washer according to one embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features, and advantages of the present invention will become more readily apparent from the following description of preferred embodiments with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described herein but may be embodied in other forms. Rather, the embodiments disclosed herein are provided so that the disclosure can be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

In this specification, when an element is referred to as being on another element, it may be directly formed on another element, or a third element may be interposed therebetween. Also, in the figures, the thickness of the components has been worked out for an effective description of the technical content.

Embodiments described herein will be described with reference to cross-sectional views and / or plan views, which are ideal illustrations of the present invention. In the drawings, the two illustrations of films and regions are exaggerated for an effective description of the technical content. Thus, the shape of the illustrations may be modified by manufacturing techniques and / or tolerances. Accordingly, the embodiments of the present invention are not limited to the specific forms shown, but also include changes in the shapes that are produced according to the manufacturing process. For example, the etched area shown at right angles may be rounded or may have a shape with a certain curvature. Thus, the regions illustrated in the figures have attributes, and the shapes of the regions illustrated in the figures are intended to illustrate specific forms of regions of the elements and are not intended to limit the scope of the invention. In the various embodiments of the present specification, the terms first, second, etc. are used to describe various components, but these components should not be limited by these terms. These terms have only been used to distinguish one component from another. The embodiments described and exemplified herein also include their complementary embodiments.

The terminology used herein is for the purpose of illustrating embodiments and is not intended to be limiting of the present invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. As used in the specification, the terms 'comprise' and / or 'comprising' do not exclude the presence or addition of one or more other elements.

In describing the specific embodiments below, various specific details have been set forth in order to explain the invention in greater detail and to assist in understanding it. However, it will be appreciated by those skilled in the art that the present invention may be understood by those skilled in the art without departing from such specific details. In some instances, it should be noted that portions of the invention that are not commonly known in the description of the invention and are not significantly related to the invention do not describe confusing reasons to explain the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, with reference to the drawings, an unlocking washer according to an embodiment of the present invention and a fastening apparatus having the same will be described.

The release preventing washer of the present invention includes a first washer member 10 and a second washer member 20.

The first washer member 10 and the second washer member 20 have the same configuration.

Twelve first inclined surfaces 12 are radially formed on one surface of the first washer member 10 and twelve first dovetail surfaces 14 are vertically formed between two neighboring first inclined surfaces 12.

Similarly, twelve second inclined surfaces 22 are radially formed on one surface of the second washer member 20, and twelve second dovetail surfaces 24 are vertically formed between the two adjacent second inclined surfaces 22 .

In addition, the first washer member 10 has twelve first grooves 16 formed on the rim. In this case, each of the first grooves 16 is formed in the middle part of the arc constituting each first inclined face 12.

Likewise, the second washer member 20 is formed with twelve second grooves 26 on the rim and each second groove 26 is formed in the middle part of the arc constituting each second inclined surface 22. 2, the first inclined surface 12 and the first inclined surface 14 are in contact with the second inclined surface 22 and the second inclined surface 24 in close contact with each other, 16 and the second groove 26 coincide with each other.

In this embodiment, the first inclined surface 12 is formed to be upwardly inclined along the counterclockwise direction, and the second inclined surface 22 is also formed to be inclined upwardly along the counterclockwise direction.

The first friction surface 12 is formed on the other surface of the first washer member 10, that is, on the opposite surface of the surface on which the first tapered surface 12 and the first tapered surface 14 are formed, (18) is formed.

The first friction surface 18 has a sloped surface and a stepped surface at a finer interval so that the number of the first sloped surfaces 12 and the first step surface 14 is about 2 to 3 times, The inclined surface of the first friction surface (18) is formed in an inclined shape opposite to the first inclined surface (12). That is, the first inclined surface 12 is formed to be inclined upward in the counterclockwise direction, but the inclined surface constituting the first friction surface 18 is formed to be inclined upward in the clockwise direction.

In this embodiment, each of the inclined surface and the stepped surface of the first friction surface 18 is constituted by 36 pieces. However, the number of the inclined surfaces and the stepped surfaces of the first friction surface 18 of the first washer member 10 can be appropriately adjusted as long as the frictional force with the object P1 can be increased. Preferably, the first washer member The number of the inclined surfaces and the stepped surfaces formed on the first friction surface 18 may be greater than the number of the first inclined surface 12 and the second stepped surface 14, Can be variously adjusted.

A second friction surface 28 for increasing the frictional force with the general nut N is formed on the other surface of the second washer member 20, that is, the opposite surface of the surface on which the second inclined surface 22 and the second step surface 24 are formed Is formed. The second friction surface 28 is configured to have a sloped surface and a stepped surface having the same number and shape as the first friction surface 18.

2, the present invention is characterized in that the first washer member 10 and the second washer member 20 are fastened to the bolt A by using a general-purpose nut N to fix the fixed bodies P1 and P2 .

Specifically, the first washer member 10 and the second washer member 20 are inserted into the bolts A passing through the fixed bodies P1 and P2 and the general universal nuts N are fastened to the bolts A The fixing of the defective fixtures P1 and P2 is performed. In this case, the first inclined face 12 and the second inclined face 22 of the first washer member 10 and the second washer member 20, and the first end face 14 and the second end face 24, So that it is in a close contact state. When the second washer member 20 tries to turn clockwise (tightening direction) with respect to the first washer member 10, the second step surface 24 is in a state of pressing and pressing the first step surface 14 closely .

As described above, in the state where the nut N is fully engaged, even if the nut N tries to rotate in the unwinding direction due to external vibration or impact, the first friction surface 18 contacts the object P1 The second inclined surface 22 rotates in the counterclockwise direction (released direction) to abut against the first inclined surface 12 in a state in which the second inclined surface 22 rubs against the nut N while rubbing against the nut N, So that the general universal nut N is prevented from being loosened by the two washer members 10 and 20.

More specifically, the present invention is made such that the height of the first inclined plane 12, that is, the vertical height from the lowermost end to the uppermost end of the first inclined plane 12 is larger than the screw pitch interval of the bolts A and N. The second inclined surface 22 rides on the first inclined surface 12 in proportion to the thread pitch of the bolts A and N even if the nut N tries to rotate in the unwinding direction by the external vibration It is possible to prevent the nut N from being loosened because the second inclined surface 22 can not completely pass over one of the first inclined surfaces 22.

The present invention is characterized in that the first inclined surface and the first inclined surfaces 12 and 14 and the corresponding second inclined surface and second inclined surfaces 22 and 24 are formed of twelve inclined planes and 12 inclined planes, When the nut N rotates in the unwinding direction by the external vibration, the clearance that the second inclined surface 22 can move in the direction of unwinding in the first inclined surface 12 becomes somewhat larger, And if the number of the inclined surfaces and the stepped surfaces is larger than 12, it becomes difficult to manufacture the inclined surface and the stepped surface, which may cause a rise in the cost of the washer member.

The first washer member 10 and the second washer member 20 have been described as being interposed between the work P1 and the general purpose universal nut N. However, And the second washer member 20 may be interposed between the fix body P1 and the bolt head.

2, it is possible to prevent the first and second washer members 10 and 2 from being unfolded by rotating the general universal nut N only in the unlocking direction, The first washer member 10, the second washer member 20, and the nut N are rotated in a direction in which the first universal joint 20 and the general universal nut N are simultaneously unwound so that the first washer member 10, .

1 and 3, the unlocking washer of the present invention may further include a unlocking member 40.

The fastening releasing member 40 is formed with a tool connecting portion 41 connected to the tool at the rear end and a nut insertion groove 42 through which the nut N is inserted and inserted at the center of the front end surface, , Two engaging projections (44) are formed on both sides of the nut insertion groove (42) at positions opposed to each other so as to protrude forward. At this time, the length of each of the two engaging projections 44 is longer than the length of the first groove 16 and the second groove 26 in the state where the first washer member 10 and the second washer member 20 are overlapped, As shown in FIG. The nut insertion groove 42 is preferably formed in the shape of a hexagonal groove so as to fit the head of a conventional nut or bolt, but may be changed depending on the shape of the nut or the bolt head.

2, the user inserts and connects the connecting bit provided in the tool such as the power tool or the general driver into the tool connecting portion 41 and inserts the nut N into the nut inserting groove 42 , The engaging projection 44 is inserted into the first groove 16 and the second groove 26 which are aligned with each other and the lock releasing member 40 is rotated in the counterclockwise direction , The first washer member 10 and the second washer member 20 together with the general-purpose screw N rotate in the counterclockwise direction, so that the engagement can be released. The screw N, the first washer member 10 and the second washer member 20 thus released can be reused.

The present invention is characterized in that twelve first grooves 16 and second grooves 26 are formed and two engaging projections 44 are formed on the engaging member 40 so as to oppose each other, The first grooves 16 and the second grooves 26 that are opposed to each other are inserted into the first grooves 16 and the second grooves 26, And the engaging projection 44 can be inserted into the first groove 16 and the second groove 26.

Although the first and second washer members 10 and 20 may be used when the general purpose universal nut N is used in the present invention, It can be used by using the developed release preventing nut 30 and the first washer member 10.

The unlocking nut 30 is formed with a female thread 31 for fastening at its center and includes a first inclined surface 12 of the first washer member 10 and twelve inclined surfaces 12 corresponding to the first inclined surface 14 12 third stepped surfaces 34 are formed between the third inclined surface 32 and the third inclined surfaces 32. [

At this time, the vertical height of the first inclined surface 12 is set to be larger than the screw pitch distance of the ball unwinding prevention nut 30. Accordingly, as shown in FIG. 4, the first washer member 10 can be inserted into the bolt A passing through the fixed bodies P1 and P2, and the loosening preventing nut 30 can be tightened by screwing.

4, even if the release preventing nut 30 tries to rotate in the release direction due to external vibration or impact, the third inclined surface 32 can not pass over the first inclined surface 12. Therefore, The prevention nut 30 can be prevented from being released.

The present invention is characterized in that the unlocking nut 30 is inserted into the nut insertion groove 42 and the two engaging projections 44 are inserted into the first groove 16 by using the unlocking member 40 The release preventing member 40 is rotated in the release direction so that the release preventing nut 30 and the first washer member 10 are simultaneously rotated and released to be reused.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It will be understood by those skilled in the art that many changes and modifications of the present invention can be made without departing from the spirit and scope of the appended claims. Accordingly, all such appropriate modifications, alterations, and equivalents will be deemed to be within the scope of the present invention.

10 ... first washer member
12 ... first inclined surface
14 ... first stage surface
16 ... first groove
18 ... First friction surface
20 ... second washer member
22 ... second inclined surface
24 ... 2nd step surface
26 ... 2nd home
28 ... 2nd friction surface
30 ... Loosening nut
31 ... female threads
32 ... third slope surface
34 ... third tooth surface
40 ... release member
41 ... tool connection
42 ... nut insert groove
44 ... engaging projection

Claims (6)

A washer interposed between a bolt or a nut and an object to prevent a bolt or a nut from being unwound,
A first washer member having twelve first inclined surfaces radially on one surface and twelve first inclined surfaces between the twelve first inclined surfaces; And
A second washer member provided on the first washer member so as to overlap with the first washer member to prevent the bolt or the nut from being loosened, a second inclined surface corresponding to the first inclined surface, And a second washer member having twelve second end surfaces formed between the two inclined surfaces.
The method according to claim 1,
Wherein the second inclined surface and the second inclined surface of the second washer member and the first inclined surface and the first inclined surface of the first washer member rotate in the fastening direction of the second washer member with respect to the first washer member, The second step surface is pressed against the first step surface and the second surface of the second washer member against the rotation of the second washer member in the release direction does not exceed the first surface inclined to the first inclined surface Wherein the washer is provided with an anti-loosening washer.
3. The method of claim 2,
The first washer member is formed with 12 first grooves so as to be evenly divided on the rim,
Wherein the second washer member has twelve second grooves equally divided on the rim,
And the first groove and the second groove coincide with each other in a state in which the first step surface and the second step surface are in close contact with each other,
And a tool connecting portion connected to the power tool is formed at a rear end of the nut, and a nut insertion groove into which the head or nut of the bolt is inserted is formed at the center of the front end, And a coupling release member having two coupling protrusions that are fitted to the coupling protrusions.
A fastening device for fastening an object to be fixed to a bolt,
A first washer member having twelve first inclined surfaces radially on one surface and twelve first inclined surfaces between the twelve first inclined surfaces; And
The first washer member is screwed to the bolt so as to overlap with the first washer member and has 12 third inclined surfaces corresponding to the first inclined surface and 12 second inclined surfaces corresponding to the 12th third inclined surface, And an anti-loose nut having twelve third stepped surfaces formed between the inclined surfaces.
5. The method of claim 4,
Wherein the first inclined surface and the first inclined surface of the first washer member and the third inclined surface and the third inclined surface of the unlocking nut are engaged with each other with respect to rotation of the unlocking nut in the fastening direction with respect to the first washer member Wherein the third inclined surface is configured to be pressed against the first inclined surface and the third inclined surface does not exceed the first inclined surface with respect to the release direction rotation of the release preventing nut relative to the first washer member And a fastening washer provided with an unlocking washer.
The method according to claim 1,
The first washer member is formed with 12 first grooves so as to be evenly divided on the rim,
A nut connecting groove formed at a center of a front end of the nut insertion groove for receiving the loosening prevention nut, and two coupling protrusions, which are inserted into the first groove and opposed to each other at opposite sides of the nut insertion groove, And a fastening releasing member formed with the fastening preventing washer.

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