CN204961536U - Locking pair of nut - Google Patents

Abstract

An anti-loosening double nut, used for nut locking in a bumpy state, the structure includes a first nut and a second nut, a groove is arranged on the end surface of the first nut, the stopper is located in the groove, and the bottom of the groove A spring is provided, and the spring is connected to the bottom of the block, and 8-12 positioning blocks are uniformly arranged on the end surface of the second nut. During the working process, the first nut and the second nut are closely matched, and the stopper is stuck in the gap of the positioning block, so that the first nut and the second nut will not slide relative to each other, thereby ensuring the anti-loosening effect of the double nuts. The utility model has the advantages of simple structure and good anti-loosening effect, and is suitable for industrial production.

Description

A kind of anti-loosening double nut

technical field

The utility model relates to a double nut, which is particularly suitable for a double nut structure in a bumpy state, and belongs to the technical field of nut locking.

Background technique

When the single nut is tightened, the pressure fluctuates due to mechanical vibration, and the double nut is greatly improved. If the lower nut is vibrated upwards, the lower nut is attached more tightly, and vice versa, if the upper nut is vibrated downward, the total load remains unchanged.

The double nuts generate an additional pressure in the thread pair that does not change with the external load, and there is always a frictional moment, which can prevent the nuts from rotating relative to the bolts. When installing, loosen the inner nuts first, then tighten the outer nuts to tighten the inner nuts, so the outer nuts can be properly thickened to withstand larger torques.

During the vibration process, the double nuts will loosen with the vibration, so the anti-loosening effect of the double nuts cannot be produced.

Utility model content

Aiming at the disadvantages of the prior art, the utility model provides an anti-loosening double nut, which has a simple structure and good anti-loosening effect.

The technical problem described in the utility model is solved by the following technical solutions:

An anti-loosening double nut includes a first nut and a second nut, a stopper is arranged on the end surface of the first nut, a spring is arranged at the bottom of the stopper, and a positioning block is arranged on the second nut.

For the anti-loosening double nuts described above, a groove is arranged on the end surface of the first nut, the stopper is located in the groove, the length of the stopper is greater than the length of the opening of the groove, and a pole is arranged at one end of the stopper.

For the above-mentioned anti-loosening double nuts, positioning blocks are evenly arranged on the end surface of the second nut, and the number of the positioning blocks is 8-12.

For the above-mentioned anti-loosening double nuts, the distance between the positioning blocks matches the length dimension of the stopper.

The utility model has the following advantages:

The utility model is provided with a pair of nuts, a stopper is arranged on the end face of one nut, and 8-12 positioning blocks are evenly distributed on the end face of the other nut, and the size of the stoppers matches the spacing size of the positioning blocks. During use, the stopper is stuck in the gap of the positioning block, so that the double nuts will not loosen during vibration, thereby improving the anti-loosening effect of the double nuts.

Instructions attached

Fig. 1 is the structural representation of the first nut of the utility model;

Fig. 2 is the top view of the second nut of the utility model;

Fig. 3 is a schematic diagram of the practical structure of the utility model.

Each label in the figure represents respectively: 1, the first nut, 2, pole, 3, spring, 4, block, 5, groove, 6, second nut, 7, positioning block.

detailed description

Referring to accompanying drawings 1 and 2, the utility model relates to a kind of anti-loosening double nut. The opening of the groove is slightly smaller than the length of the groove. There is a spring at the bottom of the groove. The spring is connected to the bottom of the block. The length of the block is greater than the length of the groove opening. inside the groove.

Positioning blocks are evenly arranged on the end surface of the second nut, the number of the positioning blocks is 8-12, and the distance between the positioning blocks matches the length of the stopper.

Refer to Figure 3, during the working process, the first nut and the second nut are closely matched, and the stopper is stuck in the gap between the positioning blocks, so that the first nut and the second nut will not slide relative to each other, ensuring the anti-loosening effect of the double nuts .

Claims (4)

1. a blocking double nut, comprises the first nut (1) and the second nut (6), it is characterized in that, the end face of described first nut (1) arranges block (4), and block (4) bottom arranges spring (3), the second nut (6) is arranged positioning block (7).

2. blocking double nut according to claim 1, it is characterized in that, the end face of described first nut (1) arranges groove (5), and described block (4) is positioned at groove (5), the length of block (4) is greater than the length of groove (5) mouth, and one end of block (4) arranges pole (2).

3. blocking double nut according to claim 2, is characterized in that, the end face of described second nut (6) arranges positioning block (7) equably, and the quantity of described positioning block (7) is 8 ~ 12.

4. blocking double nut according to claim 1, is characterized in that, the spacing of described positioning block (7) is mated with the length dimension of block (4).