KR20060023331A - Structure of a fastening bolt for preventing from releasing and structure for screw-fastening of a bolt and a nut for preventing from releasing - Google Patents

Abstract

The present invention provides a fastening structure of an anti-fastening bolt and a fastening structure of an anti-fastening bolt nut that can be easily processed or manufactured and fastened and assembled by a simple configuration as well as a strong anti-loosening strength. .

The loosening fastening bolt has a structure in which the fastening nut screws (13, 23, 33) formed at the ends of the bolts (10, 20, 30) and the fastening nut (41) or the fastening female threaded plate member (53) are fastened. In the structure of the anti-loosening fastening bolt for fastening the base material 50 and the base material 50, the base material 50 and the joint plate members 51 and 52, the base material 50 and the like, the screws for the fastening nuts 13 and 23 (33) is formed at the end side of the bolts (10, 20, 30) more than the length (Y) of the fastening screw portion to which the fastening nut 41 is fastened, and when the fastening nut 41 is rotated in the unwinding direction by vibration or the like. The opposite direction in which the release preventing nuts (42, 43, 44) are screwed in the opposite direction to the tightening nut (41) so as to be further tightened to prevent the loosening of the fastening nut (41) completely when rotated together by frictional force or the like. The screws 14, 24 and 34 are located on the rear end side of the bolts 10, 20 and 30 from the tightening screw portion length Y in the opposite direction to the fastening nut screws 13, 23 and 33. Superposed on the same current as the outer nut screw connection (13,23,33), for characterized in that formed.

Description

Structure of a fastening bolt for preventing from releasing and structure for screw-fastening of a bolt and a nut for preventing from releasing}

1A to 1C are schematic front views of the structure of the anti-loosening fastening bolt showing the embodiments of the present invention.

2A to 2C are schematic cross-sectional views showing a process and a state of fastening using the fastening prevention fastening bolt of FIG. 1A.

Figure 3 is a schematic cross-sectional view of the fastening state using the fastening prevention fastening bolt of Figure 1b.

4 is a schematic cross-sectional view of the fastening state using the fastening prevention fastening bolt of Figure 1c.

5 is a schematic cross-sectional view showing the structure of the loosening fastening bolt nut and its fastening structure according to another embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

10,20,30: Tightening bolts 11, 21, 31: Tightening screw

12, 22, 32: Loosening prevention screw 13, 23, 33: Screw for tightening nut

14,24,34: opposite thread (goal) 15,25,35: non-threaded

41: Tightening nut 42,43,44: Loosening nut

45: Unfastening nut 50: Base material

51, 52: joint plate member 53: fastening female screw plate member

A, E: intersection of thread and thread B: intersection of thread and thread bone

C: Intersection of nasal bone and threaded bone D: Intersection of nasal bone and threaded thread

H1, H2: Height of anti-loosening nut W, Wa, Wb: Width of total fastening member

X: Length of non-threaded part Y: Length of tightening threaded part

Z: Loosen thread length

The present invention relates to the structure of the loosening fastening bolt and the fastening structure of the loosening fastening bolt nut, which can be easily processed or manufactured and fastened and assembled, as well as the loosening prevention strength, even with a simple configuration. will be.

Conventionally, various configurations of anti-loosening fastening bolt nuts have been developed. That is, the loosening prevention device of the nut of Publication No. 20-1998-0060388, the elastic bushing is coupled between the two nuts that are fastened so that the bolts and nuts used for joining various machinery or structures are not loosened after tightening , The two nuts to be fastened are different in the direction of tightening, or form a wavy protrusion on the surface where the two nuts to be fastened to the bolt and install an anti-loosening plate in the elastic bush coupled between them to tighten the fastening force by elastic force By preventing the loosening by preventing the loosening of the fastening part without the use of a separate adhesive to prevent loosening, the fastening state at the time of construction can be firmly maintained for a long time and can be easily and easily disassembled or recombined as necessary. It is practical and invented to keep the reliability of the fastening part perfectly.

Similar configurations are disclosed in Japanese Patent Application Laid-Open No. 5-71513 (1993.3.23), Japanese Patent Application Laid-Open No. 6-173929 (1994.6.21), and Japanese Patent Application Laid-open No. H7-4418 (1995.1.10). And the like are known.

However, the above-described ones have different configurations such as varying the outer diameter of the threaded portion of the bolt, or forming a female threaded portion inwardly at the end of the threaded portion of the bolt, so that the machining is complicated and difficult. The screw portion having a small outer diameter also has a problem that its fastening force is small, and since the two nuts are to be in contact with each other at the time of fastening, there is a problem such as a more complicated structure in the above configuration where the outer diameter of the screw is different.

 Accordingly, the present invention is to solve this problem, not only easy to process and manufacture and fastening assembly, but also the structure of the loosening fastening bolts that can be completely prevented loosening bolts due to the strong anti-loosening strength and loosening fastening bolt nuts The purpose is to provide a fastening structure of.

In order to achieve this object, the structure of the anti-loosening fastening bolt according to an embodiment of the present invention is a fastening nut screw and a fastening nut or fastening female threaded plate member formed at the end of the bolt, and the base material and the base material, the base material and the joint In the structure of the anti-loosening fastening bolt for fastening the plate member, the base material, etc., the screw for the fastening nut is formed at the end side of the bolt more than the length of the fastening screw portion to which the fastening nut is fastened, and in the unwinding direction of the fastening nut by vibration or the like. In the opposite direction to the screw for the fastening nut, the opposite direction screw is screwed in the opposite direction to the fastening nut so that the fastening nut is further tightened to completely prevent the loosening of the fastening nut. On the rear end side of the bolt from the length of the fastening screw portion, the fastening nut overlaps the same outer diameter as the fastening nut screw. Characterized in that formed.

The opposite direction screw may have the same outer diameter as the screw for the fastening nut, and the pitch and lead angle of the thread to the screw bone of the opposite thread may be formed the same or larger than the pitch of the screw for the fastening nut.

In addition, the present invention, the fastening nut is fastened to the fastening nut screw formed at the end of the bolt in the fastening structure of the anti-locking fastening bolt nut for fastening the base material and the base material, the base material and the joint plate member, the fastening nut is An anti-loosening fastening nut in which a screw in a direction opposite to the screw is formed so as to be superimposed on the same outer diameter as the female screw corresponding to the screw for the fastening nut; The bolt is an anti-loosening fastening bolt having an opposite thread opposite to the fastening nut screw so as to be superimposed on the same outer diameter in a portion where the fastening nut screw is formed; When the anti-locking fastening bolt is screwed to the opposite side of the bolt head protruding from the bolt head through the bolt hole of the base material and the base material, the base material and the joint plate member, when the loosening fastening nut is rotated in the opposite direction After the fastening nut is tightened in the fastening direction to the position where the screw is fastened to the opposite direction, the anti-locking tightening nut is slightly rotated in the opposite direction to the fastening direction in a position where it is not detached from the thread of the fastening nut screw. Further increasing the tightening force, even if the loosening fastening nut in any one direction is rotated by vibration or the like to further increase the fastening force to provide a fastening structure of the loosening fastening bolt nut characterized in that the loosening of the loosening fastening nut is completely prevented. .

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

Figures 1a to 1c is a schematic front view of the structure of the anti-loosening fastening bolt according to embodiments of the present invention, Figure 2a is shown a process of fastening using the anti-loosening fastening bolt of Figure 1a, Figure 2b 4 is a schematic cross-sectional view of the state in which the loosening fastening bolts are fastened.

The loosening fastening bolts 10, 20, and 30 shown in Figs. 1A to 1B are formed for the fastening nut after the non-threaded parts 15, 25, and 35 are formed by the length of the non-threaded part X under the bolt head. The screws 13, 23, 33 extend beyond the length of the fastening screw portion Y to which the fastening nut 41 is fastened to the end sides of the bolts 10, 20, 30, that is, the length of the fastening screw portion Y and the length of the loosening screw portion ( Is formed over Z), and the loosening screw portion length Z is opposite to the same outer diameter so as to overlap with the fastening nut screws 13, 23, 33 in the opposite direction to the fastening nut screws 13, 23, 33. Directional screws 14, 24 and 34 are formed. The length of the non-threaded portion X of the non-threaded portions 15, 25 and 35 is preferably equal to or smaller than the width W, Wa, and Wb of the total fastened member in FIGS. 2A-5. The position between Y) and the length of the loosening screw portion Z is fastened to the fastening nut 41 and / or loosening even if it is not precise considering the width W, Wa, Wb of the total fastening member and the height of the fastening nut 41. The allowable range can be increased by chamfering or inserting a washer in the female threaded hole of the contact surface of the prevention nuts 42, 43, 44.

Accordingly, the fastening nut screws 13, 23, 33 are formed at the portion of the unwinding screw portion length Z in which the fastening nut screws 13, 23, 33 and the opposite direction screws 14, 24, 34 are formed to overlap. (2) The thread valleys of the opposite threads 14, 24 and 34 are constant, but the threads are cut by the thread valleys of the different screws. In other words, the intersections of the threads A, E of the threads 14, 24, 34 and the opposite directions of the screws 13, 23, 33 of the fastening nuts and the opposite directions of the threads 13, 23, 33 of the fastening nuts At the intersection point (C) of the screw bone and the screw bone of the screws (14, 24, 34), the thread and the screw bone are properly formed, and the screws (13, 23, 33) opposite to the fastening nut (13, 23, 33) At the intersection point (B) of the thread and the screw bone or at the intersection point (D) of the screw bone and the thread of the opposite thread (14, 24, 34) and the screw (13, 23, 33) for the fastening nut, the thread is cut by the other thread. Between the intersection points A and E, the threads of the fastening nut screws 13, 23 and 33 are cut according to the degree of overlap of the screw valleys of the opposite threads 14, 24 and 34. do. Accordingly, as shown in FIG. 1B, when the threads 13, 23, 33 of the fastening nut and the threads P, Pb of the opposite threads 14, 24, 34 are equal to each other, the threads and the valleys are It appears in the form of a diamond, and the remaining shape of each thread is the same, but as shown in Figs. 1a and 1c, the pitch (Pa, Pc) of the screw bone of the opposite threads (14, 24, 34) is the screw for the fastening nut. When the pitch of the threads of (13, 23, 33) is twice as large, the threads of the fastening nut screws (13, 23, 33) are different in shape depending on the position, as the threads and the bone valleys appear in various forms when viewed from the front. 2B, 2C, and 4, the anti-loosening nuts 42, 43, and 44 have a simple cylindrical shape between female threads.

Meanwhile, in these embodiments, the non-threaded portions 15, 25, and 35 are formed, but only the threaded portions may be formed without the non-threaded portions 15, 25, and 35, and the non-threaded portions 15, 25, and 35 are fastened to the fastening screw portions. (11, 21, 31) are almost the same outer diameter, but can also be formed with different outer diameters.

In addition, in FIGS. 1A to 1C, the opposite screws 14, 24, and 34 have the same outer diameter as the fastening nut screws 13, 23, and 33, but may have different depths of the screw valleys. 1A and 1C, the pitches of the threads of the opposite threads 14, 24 and 34 are the same, but the lead angle L may be different. When the lead angles L of the opposite screws 14, 24 and 34 increase, the loosening prevention nuts 42 and 43 described later, as in the case where the pitch of the screw valleys of the opposite screws 14, 24 and 34 are increased. 4, the tightening force to the opposite direction of the screws 14, 24, 34 will be small, but more threads of the fastening nut screws 13, 23, 33 will be left, so that the loosening prevention nuts 42, 44 While the contact area becomes wide, the height H2 of the anti-loosening nut 44 should be higher than the height H1 of the anti-loosening nut 42 as shown in FIGS. 2B and 4 to fasten the same rotational speed. .

However, when the pitch of the thread (bone) of the opposite threads (14, 24, 34) is made smaller than that of the fastening nut screws (13, 23, 33), the fastening nut screws (13, 23, 33) It may not be desirable because the thread is removed or cut too much, which will affect the fastening of the anti-loosening nuts 42, 43, 44.

As shown in FIG. 2A, the fastening preventing fastening bolt configured as described above is fastened to the fastening nut part at the end of the fastening screw part protruding from the bolt head through the bolt hole of the base material 50 and the joint plate members 51 and 52. After 41 is fastened in the fastening direction of the screw for the fastening nut, as shown in FIGS. 2B, 3, and 4, the anti-loosening nuts 42, 43, 44 are opposite to the opposite screws 14, 24, The fastening is completed by fastening in the fastening direction of 34).

Thereafter, even if the tightening nut 41 attempts to rotate a small amount in the loosening direction due to vibration or the like, the loosening prevention nuts 42, 43, 44 are to be rotated together by the frictional force or the like, but the loosening nut 41 is loosened in the loosening direction. Rotation of the loosening prevention nuts (42, 43, 44) in the fastening direction is to further tighten the anti-loosening nuts (42, 43, 44), so that the loosening of the fastening nut 41 can be completely prevented do.

In the above, the case where the coupling between the base material 50 and the base material 50 with the joint plate members 51 and 52 is illustrated and described, but the case of overlapping the base material 50 and the base material 50 may also be made. In addition, as shown in FIG. 2C, when the base material 50 is coupled or fixed to the fastening female screw plate member 53 on which the female screw is directly formed without the fastening nut 41, the female screw penetrates the fastening female screw plate member 53. Fastening nut screws 13, 23, 33 of the fastening screw portion length Y portion of the anti-loosening fastening bolt 10 are fastened to at least the female screw, and to the portion of the rearward unwinding screw portion length Z, The anti-loosening nut 42 is fastened to the opposite screws 14, 24, and 34 in the opposite direction, so that the loosening is completely prevented, as described above. The fastening female screw plate member 53 may be another base material, and in this case, the outer diameter of the portion of the length of the non-threaded portion X is usually large. Therefore, the above-mentioned fastening nut 41 should be interpreted as a concept including the fastening female screw plate member 53.

5 is a schematic cross-sectional view showing the structure of the loosening fastening bolt nut and its fastening structure according to another embodiment of the present invention.

In FIG. 5, the fastening nut is fastened to the fastening nut screw 61 formed at the end of the bolt to fasten the base material 50 and the base material 50, the base material 50, and the joint plate members 51 and 52. The fastening structure of the anti-locking tightening bolt nut, which relates to the fastening screw portion length (Y) formed only the fastening nut screws (13, 23, 33) of the anti-fastening tightening bolt (10, 20, 30) and the opposite direction of the screw ( The concept of the loosening screw portion formed with the 14, 24, 34 and the above-described fastening nut 41 and the loosening prevention nut 42, 43, 44 are implemented in one screw portion and nut.

That is, in Fig. 5, the fastening nut is an anti-loosening fastening nut 70 in which a screw in a direction opposite to that of the screw is formed so as to overlap on the same inner diameter as the female thread formed corresponding to the fastening nut screw 61. An anti-loosening fastening bolt 60 is provided with an opposite thread 62 opposite to the fastening nut screw 61 so as to overlap the same outer diameter on the portion where the fastening nut screw 61 is formed. In the threaded portion of the anti-loosening fastening bolt 60 configured as described above to protrude to the opposite side of the bolt head through the bolt holes such as the base material 50 and the joint plate members (51, 52), The loosening fastening nut 70 is fastened. The fastening prevention fastening nut 70 is fastened by tightening the fastening prevention fastening nut 70 in the fastening direction of the fastening nut screw 61 to a position where the fastening nut is fastened to the opposite direction of the screw 62 when rotating in the opposite direction. Thereafter, the anti-loosening fastening nut 70 is rotated slightly in a direction opposite to the fastening direction in a position not separated from the screw thread of the fastening nut screw 61. At this time, the tightening force is further increased, it is required to tighten in the opposite direction by applying a force. In this way, the tightening force is further increased even when the anti-locking fastening nut 70 rotates in any one direction due to vibration or the like, and thus, the fastening force is fastened only by the anti-fastening fastening nut 70, and the loosening can be completely prevented.

The above-mentioned anti-locking fastening bolts 10, 20, 30, 60, fastening nut 41, anti-loosening nuts 42, 43, 44, and anti-loosening fastening nut 70 have various screws other than the above-described configuration. It can be easily changed within the design range depending on the type, for example, the number of threads, the shape of the thread, the degree of parallelism and taper of the screw, etc. In addition, when the washer is employed, the length of the non-threaded portion (X) is The fastening nut 41 and the release preventing nuts 42, 43, 44 may be fastened even when the width of the width W, Wb is slightly longer than that of the fastening nut 41, and is generally applied to screws other than the above-described technical concept of the present invention. All general techniques that may be applied or modified within the scope of the present invention.

According to the structure and action of the loosening fastening bolt according to the embodiment of the present invention described above, since the fastening nut screws (13, 23, 33) and the opposite direction (14, 24, 34) are formed in the same outer diameter In addition, it is easy to manufacture and easy to fasten and assemble, and the fastening strength of the anti-loosening nuts 42, 43 and 44 fastened to the opposite screws 14, 24 and 34 also becomes large, and the fastening nut 41 There is an effect such that the loosening of the can be completely prevented.                     

Further, according to the fastening structure of the loosening fastening bolt nut by the anti-loosening fastening bolt 60 and the anti-loosening fastening nut 70, and its action, the anti-fastening fastening nut 70 is further provided only without the fastening nut 41. Not only can play a role, but the length of the threaded portion of the anti-loosening fastening bolt 60 can be made small, there is an effect such as simplifying processing.

Claims (3)

The base material 50, the base material 50, the base material 50 and the joint plate are engaged by fastening the fastening nut screws 13, 23, 33 and the fastening nut 41 formed at the ends of the bolts 10, 20, 30. In the structure of the anti-loosening fastening bolt for fastening the members 51, 52, the base material 50, etc., The fastening nut screws 13, 23, 33 are formed on the end side of the bolts 10, 20, 30 beyond the length of the fastening screw portion Y to which the fastening nut 41 is fastened, and the fastening nut 41 due to vibration or the like. ) Is further tightened when it is rotated together by frictional force during rotation in the unwinding direction so that the fastening prevention nuts 42, 43, 44 can be completely prevented from loosening of the fastening nut 41. Opposite screws 14, 24 and 34, which are screwed in the opposite direction, are opposite to the screws 13, 23 and 33 for the fastening nut and the bolts 10, 20 and 30 are The structure of the anti-loosening fastening bolt, characterized in that formed on the rear end side by overlapping on the same outer diameter as the screw (13, 23, 33) for the fastening nut. 2. The method of claim 1, wherein the pitch and lead angle of the threads to the valleys of the opposite threads (14, 24, 34) are formed to be equal to or larger than the pitch of the screws (13, 23, 33) for the fastening nut. The structure of the fastening preventing bolts characterized in that. The fastening nut is fastened to the fastening nut screw 61 formed at the end of the bolt, thereby preventing loosening for fastening the base material 50 and the base material 50, the base material 50, and the joint plate members 51 and 52. In the fastening structure of the bolt nut, The fastening nut is an anti-loosening fastening nut (70) having a screw in a direction opposite to that of the screw so as to overlap with a screw corresponding to the fastening nut screw (61); The bolt is an anti-loosening fastening bolt (60) having an opposite thread (62) opposite to the fastening nut screw (61) so as to overlap the portion where the fastening nut screw (61) is formed; The loosening fastening bolt 60 passes through the bolt holes such as the base material 50 and the base material 50, the base material 50 and the joint plate members 51 and 52, and prevents the fastening anti-fastening bolt from the bolt head. In the threaded portion of 60, the release preventing fastening nut 70 is fastened in the fastening direction of the fastening nut screw 61 to a position where the fastening preventing fastening nut 70 is also fastened to the opposite direction of the screw 62 when rotating in the opposite direction, and then preventing loosening. The fastening nut 70 is rotated slightly in the direction opposite to the fastening direction within the position where the fastening nut screw 61 is not detached from the thread of the fastening nut screw 61 so as to increase the fastening force, and to prevent loosening in any one direction due to vibration or the like. Fastening force is further increased even if the 70 is rotated, the fastening structure of the anti-loosening fastening nut, characterized in that the loosening of the anti-loosening fastening nut 70 is completely prevented.

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