JPH039111A - Non-loosening nut - Google Patents

Abstract

PURPOSE:To prevent loosening of a nut after tightening it by a simple structure by forming and blanking two nuts into a pattern in which the two nuts are laterally lined up, then folding the pattern so that the opening is expanded as large as one pitch of a screw thread, and performing threading. CONSTITUTION:Nuts 2 are obtained in such a manner that two hex nuts are laterally lined up and formed into an integral body, and then blanked. The body is folded up so that the opening 3 is expanded as large as one pitch of a screw thread, and threading is performed. In this state, the nut is threaded onto a bolt 1 and tightened until there is no clearance of the opening 3 left. Thus, the screw threads of the bolt are collapsed by tightening, and loosening of the nut due to vibration and impact can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) This invention relates to a nut that does not loosen even under vibration and impact.

(Prior Art) Conventional nuts naturally loosen due to vibrations and shocks, causing falling objects and machine failures.

For this reason, some nuts may be stacked, a spring washer may be inserted, or an anti-slip pad may be provided on the underside of the nut.

In addition, complicated operations such as drilling a hole in the side of the nut and crushing the male thread with a punch, or cutting a groove in the top of the nut and inserting a cotter pin into the hole in the male thread can be used to loosen the nut. was stopped.

(Problems to be Solved by the Invention) This conventional nut into which a split pin is inserted is expensive and requires complicated work.

Punches cannot be used in confined spaces. or,
Using spring washers and nuts with documentation does not completely prevent loosening due to vibration and impact.

The problem to be solved by the present invention is to provide a nut that is easy to manufacture and easy to use, and which does not loosen under any vibration or impact once tightened.

(Means for solving problems) Figures 2 and 6 show the nuts of this invention.

The nut shown in Figure 2 was formed and punched as shown in Figure 1, the opening of 3 was bent into a shape that was widened by about one pitch of the thread pitch, and then the nut was cut into threads as shown in Figure 4. , 3 until the openings are closed, and then tighten the pitch of the male thread.

The nut shown in Fig. 6 has the same effect as Fig. 2 by cutting the lower part of the conventional nut, leaving the back part at 4, widening the opening at 3 in the same way as the nut shown in Fig. 2, and then cutting the neck. Natsuto did so.

(Function) Screw the nut onto the bolt as shown in Figures 3 and 7, and turn and tighten the nut until the opening 3 of the nut closes as shown in Figures 4 and 8. At the same time as tightening the joints of and 7, the pitch of the female thread of the nut narrows,
Tighten the pitch of the male threads of the bolt, the threads of the male threads will collapse, and the bolt 7) will not loosen even under vibration and impact.

(Example) Example 1 Example 1 will be explained based on FIGS. 1, 2, 3, and 4.

As shown in Figure 1, two hexagonal nuts are lined up horizontally, formed and punched out, and an opening 3 is made in the center as shown in Figure 2.
After bending it to a state about 1 pitch wider than the thread pitch, cut the thread.

In Fig. 3, the nut thus constructed is screwed into the bolt 1 to the point where it contacts the joint 6.7, and the opening 3 is still open. If this is tightened until there is no gap in the opening 3 as shown in Figure 4, the pitch of the female thread of the nut 2 will be the same as that of the male thread of the bolt 1 at the same time as the joint 6.7 is tightened. Tighten the pitch.

Example 2 Example 2 will be explained with reference to FIGS. 5, 6, 7, and 8.

Cut the lower part of the conventional nut, leaving the back part 4, as shown in Figure 5. In Figure 6, make the opening 3 wider by about 1 pitch of the thread than the cutting base 5, and then cut the thread.

Figure 7 shows the nut 2 screwed into the bolt 1 to the point where it touches the joint 6.7, with the opening 3 open.
As shown in Fig. 8, when the nut 2 is tightened until there is no gap between the openings 3 and 3, the pitch of the male thread of the bolt 1 can be adjusted to Tighten with female screws.

(Effects of the Invention) The nut according to the present invention tightens the pitch of the threads of the male threads with the nut until the threads of the male threads are crushed, so it does not loosen under any vibration or impact. Never.

Conventionally, a spring washer was inserted, two nuts were stacked together, and the male threads were crushed with a punch after tightening with a nut.
The nut of the present invention can be easily tightened to prevent the nut from loosening.

By applying heat treatment to strengthen the springiness, the dough becomes a nut that does not loosen and allows you to make sushi over and over again.

Because it is a nut like this, if you use this nut, you can make various machines that have vibrations and shocks, vehicles, ships, all kinds of machine parts, etc. lighter and smaller, so it is a nut that can be used in a wide range of industrial applications. .

[Brief explanation of drawings]

FIG. 1 is a perspective view of the present invention during punching. FIG. 2 is a perspective view of the first embodiment of the present invention. FIG. 3 is a front view of the first embodiment of the present invention in use. 6 is a perspective view showing Embodiment 2 of the present invention during the process. FIGS. 7 and 8 are front views showing Embodiment 2 of the present invention in use.

Claims (1)

[Claims] 1. As shown in Fig. 1, two nuts are formed and punched into a mold in which they are lined up side by side, and as shown in Fig. 2, the openings 3 are formed at a pitch of about 1 pitch of the nuts. After bending it into a wide-width shape, the nut 2 was cut into strips. As shown in Figure 5, a cut was made leaving the back of the number 4 at the lower part of the conventional nut, slightly below the center, as shown in Figure 6. As shown, widen the opening of 3 by about 1 pitch of the thread pitch than the cutting base of 5, and cut the threaded nut.