KR102507223B1 - Apparatus of preventing nut loosening - Google Patents

Abstract

The nut loosening prevention device according to the present invention is a device for preventing the loosening of a nut coupled to both ends of a U-bolt, wherein a groove having a shape corresponding to the shape of the nut is formed in the center so that it can rotate integrally with the nut. A pair of fixing parts including a rotary gear having teeth formed on an outer surface and a locking part capable of restricting the rotational direction of the rotary gear while selectively contacting the outer surface of the rotary gear and between the pair of fixing parts It includes; a connecting part for connecting.

Description

Nut loosening prevention device {APPARATUS OF PREVENTING NUT LOOSENING}

The present invention relates to a nut loosening prevention device, and more particularly, to a nut loosening prevention device for preventing loosening of a nut fixing a U-bolt.

The suspension of large trucks has a structure that damps shock through leaf springs. The leaf spring is installed between the lower birds and the upper birds, and they are fastened and fixed using U-bolts bent in a U shape.

In order for the leaf spring to function properly, it must be strongly tightened by U-bolts, but when the nut fixing the U-bolts is loosened and the axial force is reduced, the elasticity is greatly reduced.

Accordingly, various studies have been conducted on a structure for preventing loosening of a nut fixing a U-bolt. Accordingly, although anti-loosening washers and structures that physically restrain the nuts using adhesives have been proposed, the structures are complex and difficult to apply, or the reduction in axial force cannot be properly prevented, or the nuts cannot be easily removed. there was a problem with

Therefore, there is a need for a nut loosening prevention device having a new structure capable of easily removing the nut while preventing the loosening of the nut to maintain the axial force.

The matters described as the background art above are only for improving understanding of the background of the present invention, and should not be taken as an admission that they correspond to prior art already known to those skilled in the art.

KR 10-2010-0098023 A (2010.09.06)

The present invention has been made to solve these problems, and an object of the present invention is to provide a nerf loosening prevention device capable of maintaining axial force by preventing loosening of a nut fastened to a U-bolt.

In order to achieve the above object, a nut loosening prevention device according to an embodiment of the present invention is a device for preventing the loosening of a nut coupled to both ends of a U-bolt, and the nut is installed at the center so that it can rotate integrally with the nut. A pair of gears including a rotary gear having a groove corresponding to the shape and teeth formed on an outer surface of the rotary gear, and a locking portion capable of restricting the rotational direction of the rotary gear while selectively contacting the outer surface of the rotary gear. It includes; a connecting part connecting between the government and the pair of fixing parts.

The locking portion includes a first catch for limiting the rotational direction of the rotational gear in one direction while in contact with the outer surface of the rotational gear, and limiting the rotational direction of the rotational gear in the other direction while in contact with the outer surface of the rotational gear A second catch and a control switch for controlling the contact between the first catch and the rotary gear and the contact between the second catch and the rotation gear by adjusting the positions of the first catch and the second catch. to be characterized

The fixing unit further includes a housing surrounding an outer surface of the rotary gear and an auxiliary housing extending from the housing and surrounding the engaging part, wherein the engaging part connects the first latch and an inner surface of the auxiliary housing, and A first elastic body for pressing the first catch in the direction of the rotary gear, and a second elastic body for connecting the second catch and the inner surface of the auxiliary housing and pressing the second catch in the direction of the rotation gear, The control switch is characterized in that it is installed to be able to press the first catch or the second catch in a direction away from the rotary gear.

The fixing part may further include a position fixing part installed in the auxiliary housing to fix the control switch in a state in contact with the first latch or the second latch.

In the position fixing part, a first groove in which an end of the control switch is disposed so that the control switch is fixed to a position pressing the first catch to contact the rotation gear, and the control switch fixes the second catch to the rotation gear. It is characterized in that the second groove is formed, respectively, in which the end of the control switch is disposed so as to be fixed in a position for pressing to come into contact with the rotating gear.

At the end of the control switch, a protrusion is installed to be movable back and forth in the direction of the position fixing part from the control switch and is inserted into the first groove or the second groove, and a connection between the control switch and the protrusion is provided. A protruding elastic body for pressing the protruding body toward the position fixing unit is installed, and the protruding body extends and protrudes outward from the auxiliary housing.

The connecting portion is formed along a tangential line of the pair of rotation gears, so that when a nut coupled to one of the fixing portions rotates in a loosening direction, a nut coupled to the other one of the fixing portions rotates in a tightening direction, One end is coupled to one side of the fixing part, the other end is coupled to the other side of the fixing part, and the fixing part is coupled to the surface of the fixing part coupled to one end of the connection part and the other end of the connection part. The surfaces of are characterized in that they are formed in directions opposite to each other.

According to the present invention has the following effects.

First, it is possible to maintain the axial force by preventing the loosening of the nut.

Second, the nut can be fixed regardless of the final angle of the nut.

Third, it is easy to install and remove, so maintenance is simple.

1 is a perspective view of a nut loosening prevention device according to an embodiment of the present invention;
2 is a perspective view showing a state in which a nut loosening prevention device according to an embodiment of the present invention is installed on a nut for fastening a U-bolt;
3 is a view showing a state in which the rotating gear of the nut loosening prevention device according to an embodiment of the present invention is set to be rotatable in a counterclockwise direction;
4 is a view showing a state in which the rotation gear of the nut loosening prevention device according to an embodiment of the present invention is set to rotate clockwise;
5 is a view showing the appearance of the position fixing part of the nut loosening prevention device according to another embodiment of the present invention.

The terminology used herein is intended only to refer to specific embodiments and is not intended to limit the present invention. As used herein, the singular forms also include the plural forms unless the phrases clearly indicate the opposite. As used herein, the meaning of "comprising" specifies specific characteristics, regions, integers, steps, operations, elements, and/or components, and other specific characteristics, regions, integers, steps, operations, elements, elements, and/or groups. does not exclude the presence or addition of

Although not defined differently, all terms including technical terms and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the art to which the present invention belongs. Terms defined in commonly used dictionaries are additionally interpreted as having meanings consistent with related technical literature and currently disclosed content, and are not interpreted in ideal or very formal meanings unless defined.

Hereinafter, a nut loosening prevention device according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings.

As shown in Figures 1 to 4, the nut loosening prevention device according to the present invention can be largely divided into a pair of fixing parts (100) and a connection part (200) connecting the two fixing parts (100).

The fixing part 100 is a key component of the nut loosening prevention device according to the present invention, and a groove having a shape corresponding to the shape of the outer surface of the nut N is formed in the central portion so that the nut N can be inserted into the outer surface. Including the rotary gear 110 in which the teeth 111 are formed, and the locking part 120 capable of restricting the rotational direction of the rotary gear 110 while selectively contacting the outer surface of the rotary gear 110 It consists of Here, it is preferable that the housing 130 surrounding the rotary gear 110 and the auxiliary housing 131 surrounding the hanging part 120 are added.

Rotating gear 110 is a configuration that can be integrally rotated with the nut (N) by inserting the nut (N), by preventing the rotation of the rotating gear 110 prevents the nut (N) from loosening. To this end, the rotating gear 110 is freely rotatably installed in the housing 130, the nut N can be rotated according to the final tightened state, and then coupled with the nut N.

The locking part 120 includes a first latch 121 that restricts the rotary gear 110 to rotate in only one direction, and a second latch 122 that restricts the rotary gear 110 to rotate only in the other direction. Control switch 123, which can control whether the first latch 121 and the second latch 122 and the outer surface of the rotation gear 110 are in contact by moving the first latch 121 and the second latch 122 composed of

The first latch 121 and the second latch 122 are a kind of ratchet structure that engages with the rotating gear 110, and the end shape of the first latch 121 and the end shape of the second latch 122 are in opposite directions to each other. It is formed to allow rotation only in opposite directions to each other when in contact with the rotating gear 110.

The first catch 121 is pressed in the direction of the rotation gear 110 by the first elastic body 124 installed on the auxiliary housing 131, and the second catch 122 is the second elastic body installed on the auxiliary housing 131 ( 125) in the direction of the rotational gear 110, and the direction of rotation of the rotational gear 110 while in contact with the rotational gear 110 unless separated from the rotational gear 110 by the control switch 123 to be described later. will be limited

Specifically, when the first catch 121 contacts the rotation gear 110, the rotation gear 110 can be prevented from rotating clockwise, and when the second catch 122 contacts the rotation gear 110. It is possible to prevent the rotating gear 110 from rotating counterclockwise.

The control switch 123 is a configuration for adjusting the first latch 121 and the second latch 122 to contact or not contact the rotation gear 110, the first latch 121 and the second latch 122 It can be moved in a direction away from the rotation gear 110 by pressing.

The control switch 123 is formed in an asymmetrical elliptical shape composed of one end with a narrow width and the other end with a wide width, and is rotatably installed around a switch shaft 126 fixed in the auxiliary housing 131. At this time, the switch shaft 126 is installed at one end of the control switch 123.

One end of the control switch 123 is formed relatively close to the rotation gear 110, and the other end is formed far from the rotation gear 110 to contact the above-described first catch 121 or second catch 122 . When the other end of the control switch 123 is in contact with the first latch 121 or the second latch 122 while rotating, the rotation direction of the rotation gear 110 is released by releasing contact with the rotation gear 110 while pressing them. can be limited.

The fixing part 100 controls the position of the control switch 123 when the control switch 123 presses the first latch 121 or the second latch 122 to release contact with the rotation gear 110. A position fixing unit 140 for fixing may be further included.

The position fixing part 140 is a kind of block-shaped structure in which the first groove 141 and the second groove 142 into which one end of the control switch 123 can be inserted are formed concavely, When one end is inserted into the first groove 141, the other end of the control switch 123 is maintained in a state in which the first latch 121 is pressed, and one end of the control switch 123 is connected to the second groove 142. When inserted into the other end of the control switch 123 is maintained in a state of pressing the second latch (122).

When the control switch 123 is formed in a solid type, the position fixing part 140 is formed of a plastic or metal material having some elasticity, so that one end of the control switch 123 moves from the first groove 141 to the second groove. It would be desirable to temporarily compress or deform it so that it can move to (142).

The shape of the connection part 200 does not need to be significantly limited as long as the pair of fixing parts 100 can be connected, but is preferably formed along the tangential line of the pair of rotation gears 110. More specifically, it is preferable that the connection part 200 is not formed in parallel with the pair of fixing parts 100 arranged side by side, but is formed so as to be crossed in an oblique line.

This is when the nut (N) constrained by one fixing part 100 rotates in the loosening direction, when the torque applied to the fixing part 100 together with the nut (N) is applied to the other fixing part 100 This is because the nut N, which is constrained to the other fixing part 100, rotates in the tightening direction, so that the tightened state of the nut N can be maintained in a complementary manner.

To this end, one end of the connection part 200 is coupled to one side of any one of the pair of fixing parts 100, and the other end of the connection part 200 is the other side of the other one of the pair of fixing parts 100, That is, it is preferable to be coupled to the opposite direction face opposite to one side coupled to one end of the connection part 200 in advance.

On the other hand, as shown in FIG. 5, the control switch 1230 is not formed of a solid type, and the protrusion 1231 protrudes from one end of the control switch 1230 toward the position fixing part 140, and the control It may be formed to have an elastic structure including a protruding elastic body 1232 mediating between the switch 1230 and the protruding body 1231 .

In this case, the protruding body 1231 is inserted into the first groove 141 or the second groove 142 of the position fixing part 140 to fix the position of the control switch 123 .

At this time, the protruding body 1231 not only protrudes horizontally from the control switch 1230 toward the position fixing part 140, but also protrudes outward from the auxiliary housing 131, that is, in the vertical direction. Through this, the user manipulates the protrusion 1231 to separate it from the first groove 141 or the second groove 142, rotates the control switch 1230, and then releases the operation of the protrusion 1231 again. It can be inserted into the first groove 141 or the second groove 142.

Through this, it is possible to more reliably fix the position of the position fixing part 140 to limit the direction of rotation of the rotary gear 110 .

As shown in Figures 3 and 4, when the nut (N) is fastened to the U-bolt (B), when the nut loosening prevention device according to the present invention is installed, a pair of fixing parts 100 are The nut (N) is fixed. At this time, the control switch 123 is adjusted so that the rotating gear 110 installed on each fixing part 100 rotates only in the tightening direction of the nut N.

At this time, if the inner surface of the rotary gear 110 is out of shape with the shape of the state in which the nut (N) is tightened, the inner surface of the rotary gear 110 is rotated in the tightening direction of the nut (N). Match the shape of the nut (N).

Then, when trying to release the nut loosening prevention device according to the present invention, after checking that the torque is applied to the fixing part 100 and the connecting part 200 by the rotation of the nut N, it is not easily released, and if there is no torque, it is simply vertical direction, and if torque is applied, first adjust the control switch 123 to set the rotation gear 110 to rotate in the loosening direction of the nut N, and then rotate until the excessive torque is resolved. Rotate the gear 110.

As such, the nut loosening prevention device according to the present invention has excellent performance in maintaining axial force by preventing the loosening of the nut, and is advantageous in maintenance because it is easy to install and release.

Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art can realize that the present invention can be implemented in other specific forms without changing the technical spirit or essential features. you will be able to understand

Therefore, the embodiments described above should be understood as illustrative in all respects and not limiting. The scope of the present invention is indicated by the claims to be described later rather than the detailed description above, and all changes or modified forms derived from the meaning and scope of the claims and equivalent concepts thereof should be construed as being included in the scope of the present invention. .

100: fixing part 110: rotation gear
111: teeth 120: hooking part
121: first latch 122: second latch
123: control switch 1230: control switch (another embodiment)
1231: protruding body 1232: protruding elastic body
124: first elastic body 125: second elastic body
126: switch axis 130: housing
131: auxiliary housing 140: position fixing part
141: first home 142: second home
200: Connection B: U bolt
N: Nut

Claims (7)

A device that prevents loosening of a nut coupled to both ends of a U-bolt,
A rotary gear having a groove corresponding to the shape of the nut and having teeth formed on the outer surface thereof so as to be integrally rotated with the nut, and rotating the rotary gear while selectively contacting the outer surface of the rotary gear. A pair of fixing parts including a hooking part capable of limiting the direction; and
Including; a connection part connecting between the pair of fixing parts,
The locking portion includes a first catch for limiting the rotational direction of the rotational gear in one direction while in contact with the outer surface of the rotational gear, and limiting the rotational direction of the rotational gear in the other direction while in contact with the outer surface of the rotational gear A second catch and a control switch for controlling the contact between the first catch and the rotary gear and the contact between the second catch and the rotation gear by adjusting the positions of the first catch and the second catch. Characteristic, nut loosening prevention device.
delete The method of claim 1,
The fixing part further includes a housing surrounding an outer surface of the rotary gear and an auxiliary housing extending from the housing and surrounding the engaging part,
The locking part connects the first catch and the inner surface of the auxiliary housing and connects a first elastic body that presses the first catch in the direction of the rotation gear, and connects the second catch and the inner surface of the auxiliary housing. Further comprising a second elastic body for pressing the second catch in the direction of the rotating gear,
The control switch, characterized in that installed to press the first catch or the second catch in a direction away from the rotary gear, nut loosening prevention device.
The method of claim 3,
The fixing part is installed in the auxiliary housing characterized in that it further comprises a position fixing part for fixing the control switch in a state in contact with the first latch or the second latch, nut loosening prevention device.
The method of claim 4,
In the position fixing part, a first groove in which an end of the control switch is disposed so that the control switch is fixed to a position pressing the first catch to contact the rotation gear, and the control switch fixes the second catch to the rotation gear. Characterized in that, the nut loosening prevention device, characterized in that the second groove in which the end of the control switch is disposed so as to be fixed in a position to be pressed to contact the rotating gear is formed.
The method of claim 5,
At the end of the control switch, a protrusion is installed to be movable back and forth in the direction of the position fixing part from the control switch and is inserted into the first groove or the second groove, and a connection between the control switch and the protrusion is provided. A protruding elastic body for pressing the protruding body in the direction of the position fixing unit is installed,
The protruding body, characterized in that the extension protrudes in the outer direction of the auxiliary housing, the nut loosening prevention device.
The method of claim 1,
The connecting portion is formed along a tangential line of the pair of rotation gears, so that when a nut coupled to one of the fixing portions rotates in a loosening direction, a nut coupled to the other one of the fixing portions rotates in a tightening direction, One end is coupled to one side of the fixing part, and the other end is coupled to the other side of the fixing part,
A surface of the fixing part coupled to one end of the connecting part and a surface of the fixing part coupled to the other end of the connecting part are formed in opposite directions, the nut loosening prevention device.

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