Non-loose primary and secondary nut

Abstract

A never-loosening child-mother nut capable of preventing a screw from loosening after being fixed is characterized in that the never-loosening child-mother nut is composed of a mother nut and a child nut and is characterized in that the child nut is arranged at one end of the mother nut and matched with the screw; wherein the female nut is composed of a female nut regular hexagonal prism surface, female nut inner teeth and female nut outer teeth, the appearance of one end of the female nut is the female nut regular hexagonal prism surface, the appearance of the other end of the female nut is the female nut outer teeth, the center of the female nut is the female nut inner teeth, and the thread directions of the female nut inner teeth and the female nut outer teeth are opposite; wherein the son nut is composed of son nut inner teeth and a son nut regular hexagonal prism surface, the appearance of the son nut is the son nut regular hexagonal prism surface, the son nut inner teeth are arranged at the dead center of the son nut regular hexagonal prism surface, the pitch and the thread direction of the son nut inner teeth are the same as those of the mother nut outer teeth, and the son nut inner teeth are arranged at one end of the mother nut. The device is simple in structure, good in technical performance, safe, reliable and durable.

Description

[0001] Technical field: The present invention relates to a never-loosening nut that prevents the screw from loosening after being fixed. The patented technology of the present invention can be applied to make nuts of various types to prevent the screw from loosening due to vibration after being fixed, thereby improving the safety of use.

[0002] Background technology: With the development of society, nuts are widely used in tracks, bridges and many buildings, especially nuts on high-speed rail tracks. Frequent vibrations can cause nuts to loosen and fall off, posing a threat to train operation. For this reason, maintenance workers have to frequently check nuts to prevent loosening and falling off. The application of the present invention on high-speed rail tracks can effectively prevent loosening caused by vibrations after fixation, thereby improving the convenience and safety of use.

[0003] Invention content: The present invention provides a never-loosening nut that prevents a screw rod from loosening after being fixed.

[0004] To achieve the above-mentioned technical solution of the present invention is:

[0005] The never-loosening mother-and-child nut is composed of a mother nut 3 and a child nut 6, and is characterized in that the child nut 6 is installed at one end of the mother nut 3 and cooperates with the screw rod.

[0006] The technical solution of the present invention also includes:

[0007] The described never-loosening female nut is characterized in that the female nut 3 is composed of a female nut regular hexagonal prism surface 1, a female nut inner thread 2 and a female nut outer thread 4, wherein the outer shape of one end of the female nut 3 is the female nut regular hexagonal prism surface 1, and the outer shape of the other end is the female nut outer thread 4, the center is the female nut inner thread 2, and the thread directions of the female nut inner thread 2 and the female nut outer thread 4 are opposite.

[0008] The never-loosening sub-nut is characterized in that the sub-nut 6 is composed of a sub-nut inner thread 5 and a sub-nut regular hexagonal prism surface 7, wherein the sub-nut 6 has an outer shape of the sub-nut regular hexagonal prism surface 7, the center of which is the sub-nut inner thread 5, and the sub-nut inner thread 5 has the same pitch and thread direction as the mother nut outer thread 4, and is installed at one end of the mother nut 3.

[0009] The advantages of the present invention are that the inner thread 2 of the female nut and the outer thread 4 of the female nut have opposite thread directions, so that the movements of the female nut 3 and the sub-nut 6 are mutually restricted, thereby achieving the purpose of never loosening. The present invention has a simple structure, good technical performance, simple manufacture, safety, reliability and durability.

[0010] Description of the drawings: The drawing is a front view structural diagram of a never-loosening nut.

[0011] In the figure, 1. regular hexagonal prism surface of the female nut, 2. inner threads of the female nut, 3. the female nut, 4. outer threads of the female nut, 5. inner threads of the sub-nut, 6. the sub-nut, and 7. regular hexagonal prism surface of the sub-nut.

[0012] Specific implementation: Referring to the accompanying drawings, the never-loosening mother-and-child nut of the present invention is composed of a mother nut 3 and a child nut 6. The mother nut 3 includes a mother nut regular hexagonal prism 1, a mother nut inner thread 2 and a mother nut outer thread 4, wherein the outer shape of one end of the mother nut 3 is a mother nut regular hexagonal prism 1, and the outer shape of the other end is a mother nut outer thread 4, the center is the mother nut inner thread 2, and the thread direction of the mother nut inner thread 2 is opposite to that of the mother nut outer thread 4; the child nut 6 includes a child nut inner thread 5 and a child nut regular hexagonal prism 7, wherein the outer shape of the child nut 6 is a child nut regular hexagonal prism 7, the center is the child nut inner thread 5, and the child nut inner thread 5 has the same pitch and thread direction as that of the mother nut outer thread 4, and is installed at one end of the mother nut 3.

[0013] When fastening an object with a mother-and-child nut that will never loosen, one end of the sub-nut 6 must be installed close to the fastened object. Since the thread directions of the mother nut inner teeth 2 of the mother nut 3 and the sub-nut inner teeth 5 of the sub-nut 6 are opposite, when vibrated, if the mother nut 3 loosens, it will be restrained by the sub-nut 6 to prevent loosening, thereby achieving the purpose of fastening the object so that it will never loosen.

Claims

1. A never-loosening female nut, consisting of a female nut (3) and a female nut (6), characterized in that: A sub-nut (6) is mounted on one end of the female nut (3) and matches with the screw rod.

2. The never-loosening nut according to claim 1, characterized in that The female nut (3) is composed of a female nut regular hexagonal prism surface (1), a female nut internal thread (2) and a female nut external thread (4), wherein the outer shape of one end of the female nut (3) is the female nut regular hexagonal prism surface (1), the outer shape of the other end is the female nut external thread (4), the female nut internal thread (2) is at the exact center, and the thread directions of the female nut internal thread (2) and the female nut external thread (4) are opposite.

3. The never-loosening nut according to claim 1, characterized in that The sub-nut (6) is composed of a sub-nut inner thread (5) and a sub-nut regular hexagonal prism surface (7), wherein the outer shape of the sub-nut (6) is the sub-nut regular hexagonal prism surface (7), the center is the sub-nut inner thread (5), and the pitch and thread direction of the sub-nut inner thread (5) are the same as those of the female nut outer thread (4), and the sub-nut is installed at one end of the female nut (3).

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