KR102048634B1 - Bolt-nut type coupling device having looseness prevention fucntion for earthquake-proof - Google Patents

Abstract

Disclosed is an earthquake-proof bolt and nut combination device having a looseness prevention function. The bolt and nut combination device having a looseness prevention function, capable of fixing an object, includes: a bolt comprising a bolt body having a screw thread and a bolt head formed at one end of the bolt body, and including a plurality of first inclined surfaces uniformly formed on the lower surface of the bolt head and a plurality of first stepped surfaces formed between the first inclined surfaces; a first washer having a circular disc shape with a hollow part, into which the bolt body can be inserted, and including a plurality of second inclined surfaces formed uniformly on one side in a circumferential direction and a plurality of second stepped surfaces formed between the second inclined surfaces; a second washer having a circular disc shape with a hollow part, into which the body part can be inserted, and including a plurality of third inclined surfaces formed uniformly on one side in a circumferential direction and a plurality of third stepped surfaces formed between the third inclined surfaces; and a nut screwed with the bolt, and including a plurality of fourth inclined surfaces formed uniformly on one side in a circumferential direction and a plurality of fourth stepped surfaces formed between the fourth inclined surfaces. The first and second washers are placed on both sides with the object laid therebetween, the bolt body penetrates the first washer, the object, and the second washer, and the nut is screwed with the bolt body to face the second washer.

Description

BOLT-NUT TYPE COUPLING DEVICE HAVING LOOSENESS PREVENTION FUCNTION FOR EARTHQUAKE-PROOF}

The present invention relates to a bolt nut fastening device having an anti-loosening function, and more specifically, a first washer and a second washer are respectively installed at both sides between the bolt and the nut, and the bolts and the first washers are respectively disposed on opposite surfaces of the bolt and the first washer. The inclined surface and the stepped surface are formed to be in close contact with each other, and the inclined surface and the stepped surface are formed at the facing surfaces of the nut and the second washer, respectively, so that the nut and the bolt are prevented from rotating in the release direction. It relates to a seismic bolt nut fastening device having.

In general, bolts and nuts are one of the fastening members widely used in the general mechanical field or construction field. The bolt nut fastening member may be inserted into the bolt to penetrate the fixture, and then fixed by tightening the nut.

Such a conventional bolt nut fastening member is gradually released due to external vibration or shock over time, and when the bolts and nuts fastened to components such as various machinery or structures are loosened, a safety accident is caused by separation of the components. There was a problem that occurred.

In order to compensate for this problem, a bolt nut fastening member for preventing loosening by inserting a washer between the bolt and the nut has been developed, and the bolt nut fastening member applying the washer has been improved in various forms.

However, in the conventional loosening bolt nut fastening member, when the vibration is acted for a long time, the loosening prevention was often insufficient.

In order to solve these problems, various fastening members have been researched and developed. However, fastening devices that can be reliably prevented from loosening have not been developed yet. Accidents are still frequent.

Patent Registration 10-1027753 Patent Registration 10-1270301 Utility Model Registration 20-0241791

The present invention was devised to solve the conventional problems as described above, the first washer and the second washer is installed on both sides between the bolt and the nut, respectively, the inclined surface and end The car surface is formed to be in close contact with each other, and the inclined surface and the stepped surface are formed on the opposing surfaces of the nut and the second washer, respectively, so that the nuts and bolts can be completely prevented from rotating in the release direction. An object of the present invention is to provide a seismic bolt nut fastening device having a prevention function.

The seismic bolt nut fastening device having an anti-loosening function of the present invention for achieving the above object is a bolt nut fastening device for fixing a fixture, a bolt body formed with a screw thread, the bolt head formed at one end of the bolt body A bolt having a plurality of first inclined surfaces circumferentially circumferentially formed on a lower surface of the bolt head and having a plurality of first stepped surfaces between the first inclined surfaces; It is formed in the shape of a circular disk having a hollow portion is formed so that the bolt body is fitted, a plurality of second inclined surfaces circumferentially formed on one surface, a plurality of second stepped surface formed between the second inclined surfaces washer; The hollow body is formed in the shape of a circular disk is formed so that the bolt body is fitted, a plurality of third inclined surface is formed circumferentially on one surface, a plurality of third step surface formed between the third inclined surface washer; And a nut which is screwed to the bolt and has a plurality of fourth inclined surfaces circumferentially formed on one surface thereof, and a plurality of fourth stepped surfaces formed between the fourth inclined surfaces. The first washer and the second washer are disposed on both sides, and the bolt body penetrates the first washer, the fixed object, and the second washer, and the nut faces the second washer. It is configured to screw the body, and when the nut and the bolt is screwed, the first inclined surface and the first stepped surface is in close contact with each other to the second slope and the second stepped surface, the third The inclined surface and the third stepped surface are brought into close contact with the fourth inclined surface and the fourth stepped surface, and the first inclined surface is the second inclined surface in the release direction of the bolt with respect to the first washer. Slope If not, characterized in that said fourth inclined surface to the release direction of rotation of the nut for the second washer is constituted such that the anti-loosening mothayeo more than the third slope.

A first fine tooth is formed on the other surface of the first washer so as to increase the frictional force with the facing surface of the fixed object, and a second fine tooth is formed on the other surface of the second washer to increase the frictional force with the other surface facing the fixed object. It may be configured to form fine teeth.

According to the above, when the seismic bolt nut fastening device of the present invention is fastened to the fixed object, the loosening can be completely prevented, the fastening between the parts by the shock or vibration caused by earthquakes, etc. It can be prevented from happening, not only to block safety accidents, but also to increase product value due to improved reliability of the product.

In addition, the present invention is inclined surface and stepped surface is formed in the first washer facing the bolt and the second washer facing the nut, respectively, to completely block the rotation of the bolt and nut in the unwinding direction to the external vibration due to earthquake, etc. Not only can the bolt or nut be released by shock or impact, but also the steel ball seating groove is formed so that steel balls are projected on the inclined surface of the nut, and the steel balls are seated on the inclined surface of the second washer. Equipped with anti-loosening function, there is an effect that can be made more reliably anti-loosening.

1 is a view showing a seismic bolt nut fastening device having a loosening prevention function according to a first embodiment of the present invention,
2 is a view showing a state of assembling the seismic bolt nut fastening device having a loosening prevention function according to a first embodiment of the present invention,
3 is an example of the use of the seismic bolt nut fastening device having a loosening prevention function according to a first embodiment of the present invention,
4 and 5 is a view showing a part of the configuration of the seismic bolt nut fastening device having a loosening prevention function according to a second embodiment of the present invention,
6 is an example of the use of the seismic bolt nut fastening device having a loosening prevention function according to a second embodiment of the present invention,
Figure 7 is a partially enlarged view for explaining the loosening prevention function of the seismic bolt nut fastening device having a loosening prevention function according to a second embodiment of the present invention.

Objects, other objects, features and advantages of the present invention will be readily understood through the following preferred embodiments associated with the accompanying drawings. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments introduced herein are provided so that the disclosure may be made thorough and complete, and to fully convey the spirit of the present invention to those skilled in the art.

In the present specification, when a component is mentioned to be on another component, it means that it may be formed directly on the other component or a third component may be interposed therebetween. In addition, in the drawings, the thickness of the components are exaggerated for the 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 exemplary views of the present invention. In the drawings, the thicknesses of films and regions are exaggerated for effective explanation of technical content. Therefore, the shape of the exemplary diagram may be modified by manufacturing techniques and / or tolerances. Therefore, the embodiments of the present invention are not limited to the specific forms shown, but also include changes in forms generated according to manufacturing processes. For example, the etched regions shown at right angles may be rounded or have a predetermined curvature. Thus, the regions illustrated in the figures have properties, and the shape of the regions illustrated in the figures is intended to illustrate a particular type of region of the device and is not intended to limit the scope of the invention. Although terms such as first and second are used to describe various components in various embodiments of the present specification, these components should not be limited by these terms. These terms are only used to distinguish one component from another. The embodiments described and illustrated herein also include complementary embodiments thereof.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. In this specification, the singular also includes the plural unless specifically stated otherwise in the phrase. As used herein, the words 'comprises' and / or 'comprising' do not exclude the presence or addition of one or more other components.

In describing the following specific embodiments, various specific details are set forth in order to explain and understand the invention in more detail. However, one of ordinary skill in the art can understand that the present invention can be used without these various specific details. In some cases, it is mentioned in advance that parts of the invention that are commonly known in the present invention and that are not highly related to the invention are not described in order to prevent confusion in explaining the present invention without cause.

Hereinafter, referring to FIGS. 1 to 3, a seismic bolt nut fastening device having an anti-loosening function according to a first embodiment of the present invention will be described.

The seismic bolt nut fastening device of the present invention is configured to include the bolt 10, the first washer 20, the second washer 30, the nut 40.

The bolt 10 may be configured of a TS bolt (also referred to as a torque control bolt, TC bolt). The bolt 10 is configured to include a bolt body 11 formed with a male thread and a bolt head 12 formed at one end of the bolt body 11. A plurality of first inclined surfaces 12a are formed at equal intervals, and first stepped surfaces 12b are circumferentially formed between neighboring first inclined surfaces 12a.

Although the bolt 10 has been described as being a TS bolt, the present invention is not limited thereto. The bolt 10 may be formed in another bolt shape, and the first inclined surface 12a and the first stepped surface 12b may be formed on the lower surface of the bolt head 12. Should just be formed.

The first washer 20 is formed in the shape of a circular disk having a hollow portion into which the bolt body 11 can be fitted, and has a first inclined surface on one surface of the first washer 20 facing the lower surface of the bolt head 12a. The second inclined surface 22a corresponding to (12a) and the second stepped surface 22b corresponding to the first stepped surfaces 12b are configured to be circumferentially formed. In addition, on the other side of the first washer 20, the first fine teeth 24 for circumferentially increasing the friction force with the fixed object are formed in a circumferential shape.

The second washer 30 has the same structure as the first washer 20. Specifically, the bolt body 11 is formed in the shape of a circular disk having a hollow portion that can be fitted, a plurality of third inclined surface (32a) is formed on one surface evenly circumferentially, between the third inclined surface (32a) The third step surface 32b is configured to have a circumferential shape. In addition, on the other surface of the second washer 30, the second fine teeth 34 for forming a friction force with the fixed object are formed in a circumferential shape.

Nut 40 is made of a hexagon like a conventional nut, the center is formed with a female screw portion 41 that can be screwed to the bolt body (11). The fourth end corresponding to the fourth slope 42a and the third step surface 32b corresponding to the third slope 32a on one surface of the nut 40 facing the second washer 30 of the present invention. The vehicle surfaces 42b are configured to be formed circumferentially.

Referring to FIG. 3, the present invention having the above-described configuration uses the bolt 10, the first washer 20, the second washer 30, and the nut 40 to couple the fixed objects p1 and p2 to each other. It can be used for use as a fastening member for fixing.

Specifically, in the state in which the first washer 20 is inserted into the bolt 10, the two plate members p1 and p2, which are to be fixed, are penetrated, and then the second washer 30 is inserted into the bolt 10. Fixing the two plates (p1, p2) is made by screwing and tightening (40) to the bolt body (11) of the bolt (10).

In this case, the first inclined surface 12a and the first stepped surface 12b of the bolt head 12 contact the second inclined surface 22a and the second stepped surface 12b of the first washer 20 to be in close contact with each other. The fourth inclined surface 42a and the fourth stepped surface 42b of the nut 40 contact the third inclined surface 32a and the third stepped surface 42b of the second washer 30 to be in close contact with each other. It becomes a state.

In this state, the first inclined surface 12a of the bolt head 12 is the first washer even if the nut 40 and the bolt 10 are to be rotated in a direction in which the nut 40 and the bolt 10 are to be released by an external vibration or shock caused by an earthquake or the like. Since the second inclined surface 22a of 20 cannot be crossed over, the fourth inclined surface 42a of the nut 40 cannot be crossed over the third inclined surface 32a of the second washer 30. The release of the state can be completely prevented.

That is, in the present invention, the first washer 20 is fitted to the bolt body 11 so that the second washer 30 is disposed on both sides of the fixed object p1, p2, and the nut 40 is bolted to the bolt body 11. When the screw is tightened to the screw), the first inclined surface 12a and the first stepped surface 12b of the bolt head 12 are the second inclined surface 22a and the second stepped surface 12b of the first washer 20. The fourth inclined surface 42a and the fourth stepped surface 42b of the nut 40 are in contact with each other, and the third inclined surface 32a and the third stepped surface 42b of the second washer 30 are in close contact with each other. The contact is brought into close contact with each other, thereby preventing the bolt 10 from being loosened by the inclined surfaces 12a and 22a in which the bolt 10 and the first washer 20 come into close contact with each other, and together with the nut 40 And the second washer 30 is in contact with each other in contact with each other by the inclined surface (32a, 42a) is not able to loosen the nut 40 can be completely prevented from being released by external vibration or shock due to earthquake, etc. will be.

In addition, according to the present invention, the first fine teeth 24 of the first washer 20 may be in contact with the surface of the fixed object p2 with strong frictional force such that the first washer 20 may be rotated with respect to the fixed object p2. And the second fine teeth 34 of the second washer 30 are in contact with the surface of the fixed object p1 with strong friction, so that the second washer 30 cannot be rotated with respect to the fixed object p1. The first inclined surface 12a and the first stepped surface 12b of the bolt head 12 in a state where the first washer 20 and the second washer 30 are in close contact with the fixed objects p1 and p2. The second inclined surface 22a of the first washer 20 and the second stepped surface 12b are brought into close contact with each other, and the fourth inclined surface 42a and the fourth stepped surface 42b of the nut 40 are second to each other. Since the third inclined surface 32a and the third stepped surface 42b of the washer 30 are in close contact with each other, rotation of the nut 40 and the bolt 10 in the direction in which the nut 10 is to be released can be more completely prevented. .

4 to 7, a seismic bolt nut fastening device having an anti-loosening function according to a second embodiment of the present invention will be described.

The fastening device of the second embodiment is different from the configuration of the second washer 30 and the nut 40, compared with the first embodiment, the rest of the bolt 10 and the first washer 20 is the same configuration In the following description, the configuration of the second washer 30 and the nut 40 will be described.

As shown in FIG. 4, the fastening device according to the second embodiment is configured such that the steel ball seating grooves 35 are formed in recessed grooves on the third inclined surfaces 32a of the second washers 30, respectively. At this time, the steel ball seating groove 35 is configured to be located on the upper side of the third inclined surface (32a).

Referring to FIG. 5, the nut 40 of the second embodiment further includes a steel ball insertion hole 45, a steel ball 46, a tension adjusting screw 47, and a spring 48 as compared to the nut of the first embodiment. Can be configured.

The nut 30 is formed with a steel ball insertion hole 45 which is vertically penetrated. The upper end of the steel ball insertion hole 45 is formed to be located at an upper position of the fourth inclined surface 42a. The upper end 45a is configured to be smaller than the diameter of the steel ball 46, so that the steel ball 46 does not escape through the upper end 45a of the steel ball insertion hole 45, and a predetermined portion protrudes over the fourth slope 42a. It is configured to be. In addition, the lower portion of the steel ball insertion hole 45 is configured to form a thread (not shown) for coupling the tension adjusting screw 47 to the inner peripheral surface.

The steel ball 46 is inserted through the open lower portion of the steel ball insertion hole 45, and is configured to protrude over the fourth inclined surface 42a through the upper end 45a of the steel ball insertion hole 45.

The tension adjusting screw 47 is configured to be screwed into the lower side of the steel ball insertion hole 45, the spring 48 is inserted into the steel ball insertion hole 45 between the steel ball 46 and the tension adjusting screw 47 It is configured to be installed.

In the above configuration, the steel ball 46 is pressed by the elastic force of the spring 48 to the upper end 45a of the steel ball insertion hole 46 to provide the elastic force to protrude above the fourth slope 42a. .

In the fastening device of the second embodiment, the fixed objects p1 and p2 may be fixed as shown in FIG. 6 in the same manner as in the first embodiment. In this case, like the first embodiment, as shown in FIGS. 6 and 7 (a), the first inclined surface 12a and the first stepped surface 12b of the bolt head 12 are formed of the first washer 20. The second inclined surface 22a and the second stepped surface 12b are brought into close contact with each other, and the fourth slope 42a and the fourth stepped surface 42b of the nut 40 are made of the second washer 30. The three inclined surfaces 32a and the third stepped surfaces 42b are brought into close contact with each other. In addition, the steel balls 46 are pressed against the third inclined surfaces 32a and do not protrude from the fourth inclined surfaces 42a. (45) It enters the state inside.

In this state, the first inclined surface 12a of the bolt head 12 may be rotated in the direction in which the nut 40 and the bolt 10 are to be released by an external vibration or shock caused by an earthquake or the like. Since the second inclined surface 22a of 20) cannot be crossed over and the fourth inclined surface 42a of the nut 40 does not cross over the third inclined surface 32a of the second washer 30, Not only can be prevented from being released, but also between the fourth step face 42b and the third step face 32b due to the strong external force, the fourth slope 42a becomes the third slope 32a. Even if the nut 40 is slightly rotated in the disengaging direction in the form of sliding about a certain angle and rotating, the steel ball seating groove 35 in which the steel ball 46 is formed on the third inclined surface 32a as shown in FIG. ), It is strongly adhered to the steel ball seating groove 35 by the elastic force of the spring 48, so that the nut 40 is no longer Rotation in the unwinding direction can be stopped, thereby preventing the unwinding of the nut 40 secondarily, so that the unwinding function can be further improved.

While the invention has been shown and described in connection with preferred embodiments for illustrating the principles of the invention, the invention is not limited to the configuration and operation as such is illustrated and described. Rather, those skilled in the art will appreciate that many changes and modifications can be made to the present invention without departing from the spirit and scope of the appended claims. Accordingly, all such suitable changes, modifications, and equivalents should be considered to be within the scope of the present invention.

10 ... bolt
11.Bolt torso
12.Bolthead
12a ... First slope
12b ... Step 1
20 ... 1st washer
22a ... 2nd slope
22b ... 2nd step
24 ... First Microtooth
30.Second Washer
32a ... 3rd slope
32b ... 3rd step
34 ... the second cogs
35.Steel fitting seat
40 ... nuts
41 ... female thread
42a ... 4th slope
42b ... 4th step
45 ... Steel insertion hole
46 ... steel balls
47.Tension adjusting screw
48 ... spring

Claims (2)

In the bolt nut fastening device for fixing the fixed object,
Comprising a threaded bolt body and a bolt head formed on one side end of the bolt body, a plurality of first inclined surfaces are formed on the lower surface of the bolt head circumferentially, a plurality of first inclined surfaces A bolt having a first stepped surface;
It is formed in the shape of a circular disk having a hollow portion is formed so that the bolt body is fitted, a plurality of second inclined surfaces circumferentially formed on one surface, a plurality of second stepped surface formed between the second inclined surfaces washer;
The hollow body is formed in the shape of a circular disk is formed so that the bolt body is fitted, a plurality of third inclined surface is formed circumferentially on one surface, a plurality of third step surface formed between the third inclined surface washer;
And a nut that is screwed to the bolt, wherein a plurality of fourth inclined surfaces are circumferentially formed on one surface, and a plurality of fourth stepped surfaces are formed between the fourth inclined surfaces.
The first washer and the second washer are disposed on both sides of the fixed object, and the bolt body penetrates the first washer, the fixed object and the second washer, and the nut is disposed on the second washer. It is configured to screw the bolt body so as to face the washer,
The second washer has a steel ball seating groove is formed in a concave groove shape on each of the plurality of third inclined surface, the steel ball seating groove is configured to be located on the upper side of the third inclined surface,
The nut is formed with a steel ball insertion hole penetrating up and down, the upper end of the steel ball insertion hole is formed to be located above the fourth inclined surface, the steel ball is inserted into the steel ball insertion hole, the upper end of the steel ball insertion hole of the steel ball It is configured to be smaller than the diameter so that the steel ball does not fall through the upper end of the steel ball insertion hole is configured so that a certain portion of the steel ball protrudes above the fourth slope,
The lower side of the steel ball insertion hole is configured to screw the tension adjustment screw, the steel ball insertion hole is configured to insert a spring between the steel ball and the tension adjustment screw, the steel ball by the elastic force of the spring of the steel ball insertion hole Pressurized to an upper end to generate an elastic force to protrude above the fourth inclined plane,
When the nut and the bolt are screwed, the first inclined surface and the first stepped surface are in close contact with the second inclined surface and the second stepped surface, and the third inclined surface and the third stepped surface The fourth inclined surface and the fourth stepped surface are brought into close contact with each other, and the steel ball is pressed into the third inclined surface to be in a state of entering into the steel ball insertion hole without protruding from the fourth inclined surface,
The first inclined surface does not exceed the second inclined surface with respect to the release direction of the bolt with respect to the first washer even by external vibration or impact, and the first inclined rotation with respect to the release direction of the nut with respect to the second washer. Not only the four inclined surfaces do not exceed the third inclined surface, but the fastening state is not only prevented, and the fourth inclined surface is the third inclined surface as the fourth step surface and the third step surface are opened by a strong external force. Even if a certain angle of rotation in the release direction is caused to slide relative to the steel ball, the steel ball is seated in close contact with the steel ball seating groove formed in the third inclined surface, thereby preventing rotation of the nut in the unwinding direction to further prevent loosening of the nut. Seismic bolt nut fastening device having an anti-loosening function, characterized in that.
The method of claim 1,
The other surface of the first washer is formed with a first fine tooth so as to increase the frictional force with one surface facing the fixed object,
Seismic bolt nut fastening device having an anti-loosening function, characterized in that the second fine teeth are formed on the other surface of the second washer to increase the friction force with the other surface facing the fixed object.

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