WO2010095772A1

WO2010095772A1 - Power clutch nut

Info

Publication number: WO2010095772A1
Application number: PCT/KR2009/000952
Authority: WO
Inventors: 임영우; 정찬묵; 김용겸
Original assignee: 주식회사 임진에스티
Priority date: 2009-02-23
Filing date: 2009-02-27
Publication date: 2010-08-26
Also published as: KR100902061B1

Abstract

The present invention relates to a power clutch nut for preventing unintended loosening of a nut spirally coupled to the spiral shaft of a bolt, specifically to a power clutch nut which enables a nut spirally coupled to the spiral shaft of a bolt by passing through the spiral shaft to be smoothly fastened and released without damage to the spiral shaft and ensures strong joints of a nut spirally coupled to the spiral shaft to prevent unintended loosening of the nut in spite of external vibration. The power clutch nut comprises: a nut which includes a recess inwardly recessed from the upper center portion, a spiral hole with a smaller diameter in the center of the recess, a fit groove recessed on one upper side of the nut where the upper end of a coil spring is fitted, and a long hole horizontally formed to be connected to the outside at the lower side of the recess, which is a point corresponding to the fit groove; and the coil spring which is inserted in the recess of the nut and has primary and secondary bent ends which are bent outward so that the upper end is inserted in the fit groove and the lower end is fitted into the long hole.

Description

Power clutch nut

The present invention relates to a power clutch nut for preventing the nut that is screwed to the helix of the bolt arbitrarily loosened, in particular when the screw to tighten or loosen the nut to be screwed through the screw helix of the bolt Power clutch nut that can be fastened and loosened easily without damage, and that the nut is firmly tightened when the nut is screwed to the spiral shaft, so that the nut does not loosen arbitrarily even if external vibration occurs. will be.

In general, bolts and nuts are widely used for fastening two objects, which are usually separated by two or more, into a single body in various fields, such as assembly of electric vehicles and automobile accessories, assembly of electronic components, assembly of furniture, and assembly of structures at construction sites. It is.

As described above, the simple fastening structure between the bolt and the nut has a disadvantage in that the fastening force is weakened by external shock or vibration.

In other words, the screw thread of the bolt is only in the state of being screwed into the spiral hole formed in the center of the nut. When vibration or shock is applied from the outside during use, the nut that is screwed to the screw shaft loosens arbitrarily. There are disadvantages that two structures fastened and fixed by bolts and nuts are spaced apart, and in severe cases, safety accidents such as bolts and nuts are completely loosened and structures are dropped and broken are collapsed.

As described above, in order to prevent loosening of the nut, which is screwed into the screw shaft of the bolt, even if an external shock or vibration occurs, various technologies can be used at home or abroad. Development of anti-loosening nut has been in use until now.

As described above, the recently released loosening nut among various nuts having a function for preventing the nut fastened to the bolt is arbitrarily loosened has been introduced in Korea Patent Registration No. 701643.

The conventional anti-loosening nut as described above has a nut having a spiral hole formed at the center thereof so that a bolt can be screwed in the center thereof, and a nut having a spiral formed in the inner circumference so that the coil spring is inserted into the nut from the bottom surface thereof. At the end, a locking end for preventing the lower end of the coil spring inserted into the end from being caught, and a bending end bent to the outside of the coil spring bent to one side of the locking end are fitted into the coil spring inserted into the enlarged diameter part. Hanging groove for preventing the arbitrary rotation and the bent end of the coil spring is formed as a free space to allow the coil spring to rise and fall in the enlarged portion according to the spiral fastening state of the bolt The coil spring in the enlarged diameter part of the nut has an inner side of the bolt. In order to be in contact with the valleys of the thread formed on the outer periphery has a semi-circular curved portion, the outer surface is characterized in that the cross-sectional shape having a flat shape.

The conventional anti-loosening nut as described above is assembled so that the bent end provided at the end of the coil spring is caught in the locking groove of the nut while the coil spring is inserted into the enlarged diameter part provided in the nut.

As described above, in the state where the coil spring is recessed in the enlarged diameter part of the nut, the spring and the lower surface of each spring are kept in contact with each other by the tightening force of the coil spring. When the penetration is made while the bolt is penetrated, the bolt spring through the spiral hole passes through the coil spring inserted in the enlarged diameter part and the coil spring is wound on the spiral part of the bolt. The bolt is fastened so that it does not loosen arbitrarily despite vibration.

However, in the conventional anti-loosening nut as described above, the enlarged diameter portion and the coil spring inserted therein maintain a circular state, so that the coil spring inserted in the enlarged diameter portion is wound in the spiral portion of the bolt. Since it should not be arbitrarily rotated in the neck, be sure to form a bent end in which the end of the coil spring is bent outward and a locking groove in the nut to prevent the bent end from being caught. As a result, the manufacturing process of the nut and coil spring is increased, and the productivity decreases, and when the bolt and nut are fastened or released, if the coil spring is subjected to severe pressure, the angle of the bent end is deformed and the gap is separated from the locking groove. In this case, the coil spring wound on the helix provided on the outer circumference of the bolt It was a disadvantage to be able to perform all of the original features to prevent loosening of the nut according to the rotation takes place.

In addition, the above phenomenon occurs even more seriously when trying to loosen the nut is screwed to the bolt.

That is, the coil spring is provided at the lower end so that only the locking end bent toward the outside is caught in the state of being fitted into the locking groove of the nut. When the coil spring is wound on the spiral provided at the outer circumference of the bolt, the coil spring is directed outward. On the contrary, when the nut is fastened to the bolt, the coil spring wound on the helix provided on the outer circumference of the bolt is fixed only to the nut and the outer helical spiral of the bolt. When the bolt is rotated to release the nut and bolt while being wound on the part, the bolt rotates in the tightening direction of the coil spring, so that the coil spring tightens the outer circumference of the bolt more tightly. Loosening is not easily performed, and in this state When turning the bolt into the lower part of the coil spring, the bent end of the coil spring is spaced apart from the locking groove of the nut, and the coil spring is rotated together with the bolt while the coil spring is wound on the outer circumference of the bolt. There was a problem such as not.

In addition, the coil spring of the conventional anti-loosening nut as described above has an inner circumferential surface formed with a semicircular curved surface, so that the entire valley portion of the spiral does not come into contact with the spiral formed on the outer circumference of the bolt, and a portion of the semicircular curved surface As the bay is in contact, there is a defect such that the coil spring is released from the spiral of the bolt when a strong vibration of the structure occurs due to relatively low contact force.

Hereinafter, with reference to the accompanying drawings, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a partially exploded perspective view for showing a state in which the present invention is applied, Figure 2 is a cross-sectional view showing a state in which the present invention is applied, power clutch nut 100 of the present invention is the spiral shaft of the bolt 200 Coil spring 400 for tightly holding the nut 300 that is fastened while passing through the 210 and the spiral shaft outer circumference of the bolt which is placed inside the nut and tightly passes through the nut. And, it is covered with the outer circumferential surface of the nut is made of a release means 500 to allow the bolt and the nut to easily rotate when the bolt spring is to be fastened and loosened so that the coil spring can be opened to the outside.

The nut 300 has a concave inlet 310 which allows the coil spring to be seated from the concave inlet from the center of the upper surface, and has a smaller inner diameter in the center from the concave inlet and has a spiral shaft of the bolt 200. (210) is provided with a spiral hole 320 to be fastened to the spiral, the upper end of the nut has a locking groove 330 to be inserted and fixed to the first bent end of the coil spring 400 to be described later And a long hole 340 which allows the second bent end to penetrate in a horizontal state at a lower end of the concave portion, which is a corresponding point of the locking groove.

At this time, the height of the long hole 340 is at least about twice the thickness of the coil spring 400 is to be wound while being wound by the spiral spacing of the spiral shaft when the coil spring having a tensile force is wound on the outer circumference of the spiral shaft of the bolt This is to allow the second bent end to rise.

In addition, the inner surface of the nut extends in a state coinciding with the inner surface of the concave portion to cover the outer peripheral portion of the upper surface of the coil spring 400 to form a catching surface 350 to prevent the coil spring from falling out arbitrarily. When the coil spring 400 is inserted into the recess in a state where the locking surface 350 is formed in a vertical state as shown in FIG. 2A, the locking surface 350 faces the locking surface 350 inward as shown in FIG. 2B. The upper and lower surfaces of the coil spring 400 are bent to be maintained so as to be supported on the bottom surface and the engaging surface of the recess 320.

In addition, the outer surface of the nut 300, which is the surface on which the long hole is formed, forms a guide portion 360 recessed inward in a vertical direction.

In addition, the coil spring 400 has a tensile force so that it can be opened up and down by its elastic force, and the upper and lower ends of the coil spring are bent toward the outside, respectively, to be caught on the nut 300. The first bent end 410 is caught by the groove 330, and the second bent end 420 to be positioned in the state fitted in the long hole 340.

At this time, the coil spring 400 is formed so that the outer diameter has a diameter slightly smaller than the inner circumference of the concave portion 320, the outer shape may form a circular shape of a general shape, as shown in Figure 4a It may be formed, but the inner surface wound on the spiral shaft may be formed in a semi-circular shape so that the point contact is made on the upper and lower surfaces of the spiral, as shown in Figure 4b formed in the inclined surface so that the surface contact with the spiral can be made It can also be used in a state.

Then, the release means 500 is provided with a tube 510 having an insertion portion 520 having the same surface as the outer surface thereof so that the nut can be inserted into the inner peripheral surface, in a state that is fitted to the guide portion at the upper end of one side of the insertion portion A protruding guide surface 530 is provided and is formed as an inclined surface 540 having an inclination angle so as to extend to the lower end of the protruding guide surface to push the second bent end 420 of the coil spring 400 outward. will be.

The power clutch nut 100 of the present invention having the configuration as described above has the tension of the coil spring 400 has its own tension as shown in FIG. 2B when the bolt 200 is not fastened to the nut 300 in a spiral manner. By the elastic force in the recessed portion 310 of the nut 300 will be in a state of being supported on the bottom surface and the locking surface 350, respectively.

In such a state, when the bolt 200 and the nut 300 are to be screwed together, the spiral shaft 210 of the bolt 200 is spiraled through the spiral hole 320 formed in the nut 300. The fastening is to be made, the tip end of the spiral shaft 210 penetrating the spiral hole 320 passes through the concave portion 310 located on the upper surface of the spiral hole 320, the concave portion 310 The inner circumferential surface of the coil spring 400 located in the) is wound along the spiral of the spiral shaft 210, before the coil spring 400 is wound on the spiral shaft 210, as shown in FIG. 2B. While the interval of 400 is wider than the spiral of the spiral shaft 210, the inner diameter of the coil spring 400 has a diameter slightly smaller than the outer diameter of the spiral shaft 210, as shown in FIG. 5B. When the tip of the shaft 210 is wound around the inner circumference of the coil spring 400, the coil Fring is wound in a state that is forcibly opened according to the outer diameter of the spiral shaft 210 as shown in Figure 5b by its tension force, and at the same time the spiral of the spiral shaft 210 as shown in Figure 3 The gap is narrowed in accordance with the interval is to be wound, and the coil spring 400 is narrowed in accordance with the interval of the spiral as described above is the first bent end 410 of the upper end is fixed to the locking groove 330 The second bent end 420 located in the long hole 340 is wound around the outer periphery of the spiral shaft 210 while rising within the space range of the long hole 340.

In the state as described above to the end of the spiral shaft 210 through the coil spring 400 to the state exposed to the outside of the nut 300 to be used in a state that the tightening coupling of the structure is completed, The bolt 200 through which the spiral is fastened while penetrating the nut 300 is tightly and firmly tightened on the spiral shaft 210 by its tightening force of the coil spring 400 wound along the spiral of the spiral shaft 210. While in a wrapping state, even if the shock or vibration from the outside during use is transmitted to the bolt 200 and the nut 300 is to be used in the state that the bolt and the nut is not released in any way.

If you want to loosen the bolt 200 and the nut 300 while using in the above state, if the loosening means 500 to be covered on the outer periphery of the nut 300 is provided on the loosening means 500 Since the inclined surface 540 pushes the second bent end 420 of the coil spring 400 located in the long hole 340 outward, the coil spring is a portion extending from the second bent end. As the circumference of the spiral shaft 210 is minutely opened, the rotation of the bolt and the nut is made easier.

More specifically, as shown in FIGS. 6A and 7A, the coil spring 400 closely adheres to the outer circumference of the spiral shaft 210 before the unwinding means 500 is covered with the nut 300. 6B and 7B, when the tube 510, which is a loosening means 500, is covered on the outer circumference of the nut 300, the protrusion protrudes on an inner surface of the insertion part 520 of the tube. Protruding guide surface 530 is guided to the guide portion 360 formed on one side of the outer surface of the nut 300 is inserted is made, in this state the tube 510 to the nut 300 When the cover is covered, the lower end of the inclined surface 540, which is inclined to the lower end of the protruding guide surface 530, is grounded to the second bent end 420, and the tubular body 510 is continuously maintained in the above state. 6b and 7b. As described above, the second bent end 420 is forcibly pushed outward in the long hole 340 by the inclined surface 540 having the inclination angle, and thus the coil spring extending with the second bent end 420. Part of the lower end of the 400 has a state that is finely spaced apart from the outer circumference of the spiral shaft 210, while maintaining the tightening force of the coil spring 400, which was tightly wrapped around the spiral shaft, the tubular body ( When the 510 and the bolt 200 are rotated in opposite directions, the surface friction force of the spiral shaft of the bolt and the coil spring is relatively small, so that the bolt and the nut can be easily released in the absence of their damage.

When the loosening means 500 as described above is to fasten the nut 300 to the spiral shaft 210 of the bolt 200, the outer peripheral surface of the nut 300 of the tubular body 510 of the loosening means 500 When the bolt and the nut are screwed in the state to be covered on the second bent end portion formed with the inclined surface 540 provided on one inner surface of the tubular body 510 at the lower end of the coil spring 400 as described above. As the 420 is forcibly moved outward, the lower end portion of the coil spring 400 extending with the second bent end is in the open state, and the spiral shaft 210 penetrates while being screwed with the spiral hole. As the surface contact force generated on the outer circumferential edge and the inner circumferential surface of the coil spring 400 becomes relatively weak, the bolt and nut may be easily screwed together.

As another embodiment of the present invention loosening means 500 is provided with an insertion piece 550 to be fitted to one side of the long hole 340 is provided from the outside of the nut 300 as shown in Figure 8, The tip portion of the insertion piece may be formed as an inclined surface 550a to push the second bent end portion 420 of the coil spring 400 outward in accordance with the depth inserted into the long hole.

The present invention as described above is to be used when the nut 300 is to be fastened to the bolt 200, or to be released. First, the tip of the insertion piece 550 of the nut 300 When positioned on one side of the long hole 340 from the outside as shown in Figure 8a the front end portion of the insertion piece 550 is in contact with the one side surface and the second bent end 420 of the long hole 340, respectively.

When pressing the insertion piece 550 in this state, one side is in contact with the inner surface of one side of the long hole 340, so the second bending end portion is in contact with the inclined surface 550a provided on the other end surface. The 420 is pushed in the opposite direction as shown in FIG. 8B according to the inclination angle of the inclined surface, so that the coil spring 400 extending from the upper bending second bending end 420 is opened from the spiral shaft 210. As it develops, the bolts and nuts can be easily locked and unlocked.

As another embodiment of the present invention, as shown in Figure 9, the second bent end 420 of the coil spring 400 is guided to the inner surface of the concave indentation 310 of the surface equipped with the long hole 340, the concave inlet It can be used to form a guide groove 370 to be easily seated in the long hole provided on the lower side, the guide groove 370 is the outer surface of the nut 300 is completely open as shown in FIG. It can also be formed in the state.

As described above, when the guide groove 370 is formed to communicate with the long hole 340 on one surface of the nut 300, the coil spring 400 is recessed in the recess 310 of the nut 300. In case of giving, the tip portion of the second bent end 420 provided at the lower side is inserted into the guide groove 370 to be inserted into the long hole 340, thereby easily coupling the coil spring 400. You will be able to.

1 is a partial cutaway perspective view for showing the configuration of the power clutch nut of the present invention.

2A is a cross-sectional view of a power clutch nut of the present invention, showing a state before assembly.

Figure 2b is a cross-sectional view of the power clutch nut of the present invention, the assembly is completed.

Figure 3 is a cross-sectional view showing a state that the bolt is screwed to the power clutch nut of the present invention.

Figure 4 is an enlarged view showing an embodiment of a coil spring of the present invention.

Figure 5a is a plan sectional view of the power clutch nut of the present invention, the state before the bolt is fastened.

Figure 5b is a plan sectional view of the power clutch nut of the present invention, the state after the bolt is fastened.

Figure 6a is a front view showing a state of use of the present invention, a state diagram before the loosening means is put on the nut.

Figure 6b is a front view showing a state of use of the present invention, a state diagram after the loosening means is put on the nut.

Figure 7a is a plan sectional view showing a state of use of the present invention, a state before the loosening means is put on the nut.

Figure 7b is a plan sectional view showing a state of use of the present invention, a state after the nut is put on the loosening means.

Figure 8 is a cross-sectional view showing another embodiment of the release means of the present invention.

9A is a front view of a nut showing another first embodiment of the present invention.

9B is a plan view of a nut showing another first embodiment of the present invention;

10 is a front view of a nut showing another second embodiment of the present invention.

Description of the main parts of the drawing

200: Bolt 210: Spiral shaft

300: Nut 310: Indentation part

320: spiral 330: locking groove

340: long 350: hanging surface

360: guide part 400: coil spring

410,420: first and second bent end 500: loosening means

510: tube 520: insertion groove

530: protrusion guide surface 540: inclined surface

According to the present invention, the first bent end, which is the upper end of the coil spring, which is located in the recess of the nut, is caught in the locking groove, and the second bent end of the lower is positioned in the long hole provided in the nut. When the outer circumferential edge of the spiral shaft penetrating the spiral hole of the nut is wound around the coil spring, the force of the second bent end is extended outward in the long hole, so that the outer circumferential edge of the spiral shaft and the inner circumferential surface of the coil spring are generated. The contact force of the contact with each other is loosened so that the bolt and nut can be easily screwed, and after the screw is fastened, the coil spring's own torsional force wound on the outer periphery of the screw shaft secures the screw shaft tightly and firmly. The bolts and nuts are not loosened arbitrarily even when there is a shock or vibration from the outside during use. No two days are a variety of accessories and structures that are coupled signed by the agent and the nut are cut off or separated to shake that effect being able to be used safely without the risk of accidents.

In addition, if you want to loosen the bolts and nuts in order to separate or remove various accessories or structures, the nut is provided with a protruding guide surface provided on one side of the inner peripheral surface of the nut if the nut is covered with the nut. As the inclined surface forcibly pushes the second bent end toward the outside in the state of being fitted to the part, the lower end portion of the coil spring extending from the second bent end is minutely spaced apart from the outer circumference of the spiral shaft. It is easy to loosen the bolts and nuts without damage to the screw shaft and coil springs, thus improving the work efficiency and reusing the bolts and nuts without damaging them. Therefore, there is an effect such as to prevent economic losses.

Claims

The recessed part which is recessed inwardly in the upper surface, the spiral hole penetrated with the smaller inner diameter in the recessed part, the locking groove part recessed to catch the upper end of the coil spring on one side of the upper surface, and in the horizontal state at the lower end of the recessed part A nut made of a long hole communicating with the outside;

The upper end portion is hooked into the recess of the nut so that the upper end portion is caught in the locking groove portion, and the lower end portion is composed of coil springs having first and second bending ends that are bent outwards so as to remain fitted in the long hole. Power clutch nut.
The method of claim 1,

The height of the long hole is at least twice the thickness of the coil spring so that when the coil spring having a tensile force is wound around the spiral shaft outer circumference of the bolt, the second bent end is raised when the coil spring is wound while being compressed by the spiral interval of the spiral shaft. Power clutch nut characterized in that it is possible.
The method of claim 1,

The coil spring is a power clutch nut, characterized in that the inner surface is formed in a semi-circular shape so that the point contact on each of the upper and lower surfaces of the spiral formed on the spiral shaft of the bolt.
The method of claim 1,

The coil spring is a power clutch nut, characterized in that the inner surface is formed with the same inclined surface as the spiral so that the surface contact is made to the spiral formed on the spiral shaft of the bolt.
The method of claim 1,

The power clutch further comprises a guide for allowing the second bent end to be pushed by the unwinding means covered by the nut by injecting the second bent end of the coil spring perpendicularly to the outer surface where the long hole is formed. nut.
The method of claim 5,

The release means includes a tube having an insertion portion having the same surface as the outer surface thereof so that the nut can be inserted into the inner peripheral surface; A protruding guide surface that is guided in a state of being inserted into a guide part at an upper end of one surface of the insertion part; A power clutch nut, characterized in that made of an inclined surface extending to the lower end of the protruding guide surface to push the second bent end of the coil spring outward.
The method of claim 5,

The release means is a power clutch nut, characterized in that the insertion piece to be inserted into one side portion of the long hole, and the inclined surface to be pushed in the outward direction while contacting the second bent end portion of the insertion piece.
The recessed part which is recessed inwardly in the upper surface, the spiral hole penetrated with the smaller inner diameter in the recessed part, the locking groove part recessed to catch the upper end of the coil spring on one side of the upper surface, and in the horizontal state at the lower end of the recessed part A nut made of a long hole communicating with the outside and a guide part which is vertically inserted into an outer surface on which the long hole is formed so that a part of the second bent end of the coil spring can be exposed;

A coil spring having first and second bent ends which are bent outwardly so as to be inserted into the concave portion of the nut so that the upper end portion is caught in the locking groove portion, and the lower end portion is inserted into the long hole;

It has a tubular body having an insertion portion having the same surface so that the nut can be covered, has a protruding guide surface guided in the state of being fitted into the guide portion at one upper end of the insert portion, extending to the lower end of the protruding guide surface coil spring Power clutch nut, characterized in that the release means is provided with an inclined surface so as to push the second bent end of the outside.
The recessed part which is recessed inwardly in the upper surface, the spiral hole penetrated with the smaller inner diameter in the recessed part, the locking groove part recessed to catch the upper end of the coil spring on one side of the upper surface, and in the horizontal state at the lower end of the recessed part A nut made of a long hole communicating with the outside;

A coil spring having first and second bent ends which are bent outwardly so as to be inserted into the concave portion of the nut so that the upper end portion is caught in the locking groove portion, and the lower end portion is inserted into the long hole;

And a release means consisting of an insertion piece to be inserted into one side of the long hole from the outside of the nut, and an inclined surface to contact the second bent end portion to the front end of the insertion piece to push it outward. Power clutch nut.
The method according to any one of claims 1 and 8 or 9,

The second bent end of the coil spring is guided to the inner surface of the concave part of the surface is provided with the guide hole for easy seating in the long hole provided on the lower side of the concave part further comprises Power clutch nut.
The method of claim 10,

The power clutch nut, characterized in that the guide groove is completely opened to the outer surface of the nut.