KR20000072765A - Vibration bolt and nut - Google Patents

Abstract

PURPOSE: A bolt and a nut are provided to efficiently prevent unfastening even with one connector by directly installing a device not unfastened by vibration to a body of one bolt and nut. CONSTITUTION: A bolt(11) and a nut(13) are used as a connector for fixing a material to be fixed. Herein, in connecting the material by using only the bolt, the bolt is axially rotated to be connected in a screw hole. The material is contacted with a point of a screw pitch(17) of the bolt. A groove(21) formed on an outer diameter circumference(19) of the screw pitch is connected while pushed to one side. The connected point of the screw pitch is mutually contacted by being elastically adhered to the outside. Thus, the release caused by vibration is prevented.

Description

Vibration Bolt and Nut {Vibration bolt and nut}

The present invention relates to a vibrating bolt and nut, and more particularly, the bolt is tightened to the screw hole and the nut of the fixture, the elastic bias to one side by mutual thread angles, so that the loosening regardless of the vibration of the fixed object It relates to bolts and nuts which do not loosen against vibration which can be prevented.

Generally, the bolt and nut which fixes a to-be-fixed object are not used for the purpose of preventing loosening by vibration of a to-be-fixed object.

In particular, a method of preventing loosening of the bolt by inserting a loosening prevention washer in the vibration after screwing the bolt to the side of the fixture before tightening the nut has been widely used.

By the way, in the conventional method of fastening the bolts and nuts, without being formed by adding the means to withstand vibration directly to the bolts and nuts, it is possible to withstand the vibration of the bolts and nuts by processing a washer that can withstand the vibration produced separately As a separate accessory must be manufactured separately, it caused an increase in the manufacturing cost, and it was inconvenient to use because the means that were not loosened by vibration consisted of bolts and nuts and separate parts.

Accordingly, an object of the present invention is to provide a bolt and nut that is not loosened by vibration that can effectively prevent loosening even with one fastener by directly installing a means that is not loosened by vibration in the body of one bolt and nut.

1 is a side view of the vibration bolt and nut according to the present invention,

A partially enlarged cross-sectional view of FIG.

Figure 2 is a side view of the shape that can be elastically urged to the inner and outer sides after contact with the thread angle of the bolt and nut and the fixture when the nut is tightened,

A partial enlarged cross-sectional view of "B" in FIG.

3 is a schematic cross-sectional view according to FIG. 1, FIG. 4 is a view showing several grooves in a horizontal direction with threads, and FIG. 5 is a kind of various screw threads for the bolt and nut of FIG. 1.

-Explanation of symbols for the main parts of the drawing-

11: Bolt 13: Nut 15: Constant pitch 17, 17a: Thread angle

19: outer diameter portion 21: groove 30: thread 40: horizontal groove

According to the present invention, in the bolt and nut for fastening the fixed object, the groove is rolled inclined inwardly from both sides toward the central portion in the outer diameter portion of the screw angle formed in a spiral with a constant pitch and a rib diameter. It is achieved by the bolt and nut, characterized in that formed.

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

1 is a side view of the bolt and nut not loosened in accordance with the present invention,

FIG. 2 is an enlarged sectional view of portion “A” of FIG. 1. FIG.

3 is a schematic cross-sectional view according to FIG. 1, FIG. 4 is a view showing several holes in a threaded transverse direction, and FIG. 5 is a shape of various threads for the bolt and nut of FIG. 1.

As shown in these figures, the vibration bolt 11 and the nut 13 of the present invention form a thread angle 17 in a spiral with a constant pitch 15. The outer diameter portion 19 of the thread angle 17 is rolled a groove 21 toward the center portion.

That is, the groove 21 is formed to a predetermined depth by forming an inclination angle from both sides toward the central portion of the outer diameter portion from the center of the outer diameter portion 19 as a starting point.

Therefore, when the bolt 11 is tightened while rotating in the axial direction, the thread angles 17, 17a abutted by the grooves 21 on the thread angles 17, 17a of the bolt 11 and the nut 13 are It is configured to elastically bias each other.

The bolt 11 and the nut 13 of the present invention configured as described above are used as fasteners for fixing the fixed object. In this case, when fastening the fixed object using only the bolt 13, the bolt hole formed in the fixed object When the bolt 11 is rotated and fastened from the axial direction, the bolt 11 is abutted with the thread angle 17 of the bolt 11 abutting on the thread angle formed in the screw hole.

Accordingly, the groove 21 formed in the outer diameter portion 19 of the thread angle 17 of the bolt 11 to be contacted is pushed to one side, and the thread angle 19 in the fastened state is elastically urged to the outside again. They are abutted against each other to prevent loosening due to vibrations of the fixed object.

On the other hand, when the bolt 11 and the nut 13 are used at the same time, the nut 13 is fixed by rotating the screw 11 through the axial direction in the threaded hole of the fixed object to fix the fixed object therethrough and then fixing the nut 13. The thread angle 17a formed in the threaded hole of the screw and the thread angle 17 formed in the bolt 11 are abutted to each other while being elastically biased to one side, so that the bolt 11 and the nut 13 are mutually supported to prevent loosening.

By rolling several grooves 40 in the horizontal direction of the bolt and nut which prevent such loosening, the loosening can be effectively prevented by mutual elasticity when fastening with the nut, and the characteristics of the screw thread which can prevent loosening are various. By rolling at the thread angle 30 of the shape, the bolt 11 and the nut 13 are prevented from being loosened by vibration.

Unlike the existing bolts and nuts, the present invention forms grooves rolled to be inclined inwardly from both sides of the thread angle, so that the nuts are fastened together as grooves or similar shapes recessed inward from the center of the thread angle. And a thread that prevents loosening in a shape that can be elastically urged to the inside and the outside after being abutted on the thread angle of the fixed object, and it is possible to introduce various thread shapes, and bolts and nuts by rolling grooves in the horizontal direction of the thread. The object of the present invention to achieve a more efficient elastic bias at the time of fastening.

As described above, according to the present invention, by providing a means that does not loosen the vibrations directly on the body of the bolts and nuts, there is an advantage that it is convenient to use, in particular, a means that does not loosen the vibrations of the bolts and nuts, unlike the conventional There is no need to manufacture the parts for the means that do not loosen the vibration of the bolts and nuts that do not loosen the vibration to improve the productivity and reduce the cost is provided.

Claims (3)

In bolts and nuts for fastening a fixed object, the grooves, which are formed to be inclined from both sides inwardly toward the center of the threaded angle of the thread formed in a spiral shape with a predetermined pitch and a rib diameter, may be elastically biased when the nut is fastened. Vibrating bolts and nuts characterized by the formation of male grooves. The vibration bolts and nuts of claim 1, wherein the grooves rolled to be inclined inwardly have the shape of the grooves which can be elastically biased. The vibration bolt and nut according to claim 2, which can be rolled in several grooves in the transverse direction of the thread to more effectively prevent loosening when engaged with the nut.