CN204878236U - Locking lock nut - Google Patents

Abstract

The utility model discloses an anti-loosening lock nut, the angle of the nut is increased by 0.1°-3°. The beneficial technical effect of the utility model is: not only the original performance and function of the nut are retained, but also the performance and installation function are greatly improved, which can avoid the uneven stress on the bolt after the nut and the bolt have been locked for a long time For the problem of looseness, spring washers and other anti-loosening devices can be saved during the installation process, but the anti-loosening function is not lost; the use cost is reduced, and the product use efficiency is improved; the processing technology is simple, which can improve the competitiveness of the product in the market.

Description

anti-loosening lock nut

【Technical field】

The utility model relates to the field of fasteners, in particular to an anti-loosening locking nut widely used in industries such as large and small mechanical equipment, steel structures, and construction.

【Background technique】

Nuts are parts that tightly connect mechanical equipment. Bolts of the same specification can be connected together through internal threads. For example, M4-P0.7 nuts can only be connected with M4-P0.7 series bolts (in the nut , M4 refers to the inner diameter of the nut is about 4mm, 0.7 refers to the distance between two thread teeth is 0.7mm); the same is true for American products, for example, a 1/4-20 nut can only be matched with a 1/4-20 screw (1 /4 finger nuts have an inner diameter of about 0.25 inches, and there are 20 teeth in each inch of 20 fingers).

The tooth angle of the existing bolts is 60°, and the angle of the corresponding nuts is also 60°; after the nut and the bolt are locked together, there is a long-term problem of uneven force on the bolt during the tightening process, which leads to loosening, although the spring washer can be installed. To a certain extent, it solves the above-mentioned problems such as looseness caused by uneven force, but the defect of looseness is easy to occur.

【Content of utility model】

The purpose of this utility model is to solve the above-mentioned deficiencies in the prior art, to provide an anti-loosening device with a simple structure, which achieves a balanced distribution of thread force in the working area after locking, and avoids the phenomenon of bolt loosening due to uneven force. fasten the screw nut.

In order to achieve the above object, the utility model is realized in the following way: a kind of anti-loosening lock nut, and the angle of the thread of the nut is increased by 0.1°-3°.

Preferably, the nut tooth angle is increased by 0.1°-1.5°

For metric standard nuts, the nut asan angle ranges from 60.1°-63°.

Preferably, the angle range of the nut tooth is 60.1°-61.5°.

Preferably, the angle range of the nut tooth is 60.5°-61.0°.

More preferably, the nut ascent angle is 61.0°.

For British standard nuts, the angle range of nut asan is 56.1°-59°.

Preferably, the angle range of the nut tooth is 56.1°-57.5°.

Preferably, the angle range of the nut tooth is 56.5°-57.0°.

More preferably, the nut ascent angle is 57.0°.

Compared with the prior art, the beneficial technical effect of the utility model is: not only retaining the original performance and function of the nut, but also greatly improving the performance and installation function, which can avoid the long-term locking of the nut and the bolt The problem of loosening caused by uneven force on the rear bolts can save spring washers and other anti-loosening devices during the installation process, but without losing the anti-loosening function; it reduces the use cost, improves product use efficiency, and has simple processing technology, which can improve the product's durability. competitiveness in the market.

【Description of drawings】

Fig. 1 is the utility model is a kind of anti-loosening locking nut and bolt installation diagram;

Fig. 2 is a partial sectional view of the utility model as a bolt;

Fig. 3 is a partial cross-sectional view of the utility model as a locking nut;

Fig. 4 is a partial cross-sectional view of the installation of a locking nut and a bolt of the utility model.

【Detailed ways】

The utility model is described in detail below in conjunction with the accompanying drawings and specific embodiments.

An anti-loosening lock nut, as shown in Figures 1-4, wherein the nut 2 has a nut mount 21, and for metric standard nuts, the angle range of the nut mount 21 is 60.1°-63°. Wherein, preferably, the angle range of the nut tooth mount 21 is 60.5°-61.5° Preferably, the angle range of the nut tooth mount 21 is 60.5°-61.0°. More preferably, the nut ascent angle is 60.9° or 61.0°.

For British standard nuts, the angle range of the nut tooth 21 is 56.1°-59°. Wherein, preferably, the angle range of the nut tooth mountain 21 is 56.4°-57.5°. Preferably, the angle range of the nut tooth mountain 21 is 56.5°-57.0°. More preferably, the angle of the nut ascent is 56.9° or 57.0°.

The appearance of the utility model can be manufactured according to the traditional shape, but its inner thread is different from the standard thread. By changing the angle of the thread of the nut and the thread of the standard screw 1, the internal thread of the nut 2 and the standard thread 11 (60° or 56°) of the screw are evenly stressed during the occlusal process. After applying the standard locking force The force on the thread in the working area reaches a balanced distribution, avoiding the phenomenon of fracture caused by uneven force on the bolt. Usually nuts + spring washers + flat washers + bolts are combined into a set of fasteners. If you use this product, you only need: nuts + flat washers + bolts to form a set of fasteners. The utility model is applicable to fields where fasteners are needed in various industries, and is not limited to a specific industry or field. The most widely used industries are mechanical equipment, steel structure, construction, large equipment and so on.

The preferred specific embodiments of the present utility model have been described in detail above, and it should be understood that those skilled in the art can make many modifications and changes according to the concept of the present utility model without creative work. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the prior art should be within the scope of protection defined by the claims .

Claims (2)

1. An anti-loosening lock nut, characterized in that, for a metric standard nut or an imperial standard nut, the angle of the nut's tooth is increased by 0.1°-3°. 2. An anti-loosening lock nut according to claim 1, characterized in that, the angle of the nut's thread increases by 0.1°-1.5°.