CN218177698U

CN218177698U - Fastening nut

Info

Publication number: CN218177698U
Application number: CN202221774579.3U
Authority: CN
Inventors: 周俊
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-07-11
Filing date: 2022-07-11
Publication date: 2022-12-30
Anticipated expiration: 2032-07-11

Abstract

The utility model relates to the field of connecting parts, in particular to a fastening nut, which comprises a first nut and a second nut, wherein the first nut is provided with a first screw thread, the second nut is provided with a second screw thread, the screw threads of the first screw thread and the second screw thread are opposite in rotation direction, and the first nut and the second nut are in mutual contact by screwing to generate mutually conflicting locking force; the first screw thread and the second screw thread are trapezoidal screw threads, the first screw thread is a positive screw thread, and the second screw thread is a reverse screw thread; the inner diameter of the first nut is larger than that of the second nut; a plurality of first nut teeth are arranged on the first nut; a plurality of second nut teeth are arranged on the second nut; the plurality of second nut teeth can be embedded into the plurality of first nut teeth; the screw nut and the screw nut can be tightly locked through mutual interference of rotating forces between the two screw nuts.

Description

Fastening nut

Technical Field

The utility model relates to an adapting unit field, the more specifically fastening screw that says so.

Background

The currently known anti-loose fastening nuts are in the following forms: the double-screw nut, the eccentric double-screw nut, the wedge in the screw nut, the outer high inner low wedge tooth on the contact surface of the screw nut, glue dripping into the screw nut, the double-screw nut and the reverse screw nut. However, these forms of fastening nuts have the disadvantage that the problem of nut loosening cannot be solved essentially, especially the problem that such nut bolt contact surface plus outer high inner low wedge threads still have nut dropout in practical use.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a fastening screw, can lock the connection of screw and screw through the conflict of the revolving force between two screws.

The purpose of the utility model is realized through the following technical scheme:

the fastening nut comprises a first nut and a second nut, wherein the first nut is provided with a first screw thread, the second nut is provided with a second screw thread, the screw threads of the first screw thread and the second screw thread are opposite in rotation direction, and the first nut and the second nut are in mutual contact through screwing to generate mutual interference locking force;

the first screw thread and the second screw thread are trapezoidal screw threads or triangular screw threads or rectangular screw threads, the first screw thread is a positive screw thread, and the second screw thread is a negative screw thread;

the inner diameter of the first nut is larger than that of the second nut;

a plurality of first nut teeth are arranged on the first nut;

a plurality of second nut teeth are arranged on the second nut;

the plurality of first nut teeth are respectively and uniformly arranged on the upper end face and the lower end face of the first nut in the circumferential direction;

the plurality of second nut teeth can be embedded into the plurality of first nut teeth;

the first nut tooth is provided with an inclined plane, a vertical plane and an extrados surface, the inclined plane has an inclination angle of 0-360 degrees, the extrados surface has an inclination angle of-90 degrees, and the first nut tooth and the second nut tooth have the same structure;

the first nut is connected to the first screw column through a screw thread, the second nut is connected to the second screw column through a screw thread, and the diameter of the first screw column is larger than that of the second screw column;

and a screw column buckle groove is arranged on the second screw nut.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Fig. 1 is a schematic structural view of a first nut of the present invention;

fig. 2 is a schematic structural view of a first nut of the present invention;

fig. 3 is a schematic structural view of a first nut in front view;

fig. 4 is a schematic structural view of a second screw nut according to the present invention;

fig. 5 is a schematic structural view of a front view of a second screw of the present invention;

fig. 6 is a schematic structural view of a second nut of the present invention;

fig. 7 is a schematic view of a screw structure according to the present invention.

In the figure: a first nut 10; a first screw thread 20; a first nut tooth 30; the inclined surface 31; a vertical face 32; an outer arc surface 33; a second nut 40; a second screw thread 50; a second nut tooth 60; a screw post thread groove 70; a screw cap 80; a first screw post 81; and a second screw post 82.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1 and 5, the following detailed description is made of the structure and function of the fastening nut;

a fastening nut is composed of a first nut 10 and a second nut 40, wherein the first nut 10 is provided with a first screw thread 20, the second nut 40 is provided with a second screw thread 50, the screw threads of the first screw thread 20 and the second screw thread 50 are in opposite rotation directions, the first nut 10 and the second nut 40 are rotated to contact with each other to generate mutually conflicting locking force, and the inner diameter of the first nut 10 is greater than the inner diameter of the second nut 40;

the first nut 10 is connected to a first screw column 81 through screw threads, the second nut 40 is connected to a second screw column 82 through screw threads, and the diameter of the first screw column 81 is greater than that of the second screw column 82;

when in use, a first nut 10 and a second nut 40 are connected to screws as shown in fig. 7, the first nut 10 is screwed to a first screw column 81 first, the second nut 40 is screwed to a second screw column 82 through screws, since the screw threads of the first screw 20 and the second screw 50 are opposite in rotation direction, the end of the second nut 40 is in contact with the first nut 10, and when the first nut 10 is loosened, the rotation direction in which the first nut 10 is shifted is the locking direction of the second nut 40, and thus mutually conflicting locking forces are generated to lock the first nut 10;

further, a screw column threading slot 70 is provided on the second screw nut 40, and since the diameter of the first screw column 81 is greater than that of the second screw column 82, in order to ensure that the first screw nut 10 contacts with the second screw nut 40, the screw column threading slot 70 is provided, and the diameter of the screw column threading slot 70 is greater than that of the first screw column 81, so that the second screw nut 40 can be sleeved into a part of the first screw column 81 to contact with the first screw nut 10;

further, as shown in fig. 1 and 4, a plurality of first nut teeth 30 are arranged on the first nut 10, and a plurality of second nut teeth 60 are arranged on the second nut 40; the plurality of first nut teeth 30 are respectively and uniformly arranged on the upper end face and the lower end face of the first nut 10 in the circumferential direction, and the plurality of second nut teeth 60 can be embedded into the plurality of first nut teeth 30;

the first screw female tooth 30 is provided with an inclined plane 31, a vertical plane 32 and an extrados surface 33, the inclined angle of the inclined plane 31 is between 10 ° and 80 °, the inclined angle of the extrados surface 33 is between 0 ° and 90 °, and the first screw female tooth 30 and the second screw female tooth 60 have the same structure;

after the first screw nut 10 is screwed into the first screw column 81, when the second screw nut 40 is screwed into the second screw column 82, the inclined direction of the inclined surface of the second screw nut 60 is the same as the screwing direction of the second screw nut 40, meanwhile, the inclined surface 31 of the first screw nut 30 is opposite to the inclined surface of the second screw nut 60, and therefore when the first screw nut 10 and the second screw nut 40 are in contact, the inclined surfaces of the first screw nut 30 and the second screw nut 60 are in contact with each other, the second screw nut 60 is embedded into the first screw nut 30, and the vertical surfaces of the first screw nut 30 and the second screw nut 60 are in contact with each other, so that the purpose of locking is achieved;

preferably, the first screw thread 20 and the second screw thread 50 are trapezoidal screw threads, triangular screw threads or rectangular screw threads, and the trapezoidal screw threads are beneficial to preventing the screw from falling off;

preferably, the first screw thread 20 is a positive screw thread, the second screw thread 50 is a negative screw thread, or the first screw thread 20 is a negative screw thread, the positive screw thread is a right-handed screw thread, and the negative screw thread is a left-handed screw thread.

Claims

1. A fastening nut constituted by a first nut (10) and a second nut (40), characterized in that: the first nut (10) is provided with a first screw thread (20), the second nut (40) is provided with a second screw thread (50), the screw threads of the first screw thread (20) and the second screw thread (50) are opposite in rotation direction, and the first nut (10) and the second nut (40) are in mutual contact through screwing to generate mutually abutting locking force.

2. A fastening nut according to claim 1, wherein: the first screw thread (20) and the second screw thread (50) are trapezoidal screw threads or triangular screw threads or rectangular screw threads, the first screw thread (20) is a positive screw thread, and the second screw thread (50) is a negative screw thread.

3. A fastening nut according to claim 1, wherein: the inner diameter of the first nut (10) is larger than that of the second nut (40).

4. A fastening nut according to claim 1, wherein: the first nut (10) is provided with a plurality of first nut teeth (30).

5. The screw nut according to claim 4, wherein: the second nut (40) is provided with a plurality of second nut teeth (60).

6. The screw nut according to claim 4, wherein: a plurality of first nut teeth (30) are respectively and uniformly arranged on the upper end face and the lower end face of the first nut (10) in the circumferential direction.

7. A fastening nut according to claim 5, wherein: a plurality of second screw nut teeth (60) may be fitted into the plurality of first screw nut teeth (30).

8. The screw nut according to claim 4, wherein: an inclined plane (31), a vertical plane (32) and an extrados (33) are arranged on the first screw female tooth (30), the inclined angle of the inclined plane (31) ranges from 0 degree to 360 degrees, the inclined angle of the extrados (33) ranges from-90 degrees to +90 degrees, and the first screw female tooth (30) and the second screw female tooth (60) are identical in structure.

9. A fastening nut according to claim 1, wherein: the first nut (10) is connected to the first screw column (81) through a screw thread, the second nut (40) is connected to the second screw column (82) through a screw thread, and the diameter of the first screw column (81) is larger than that of the second screw column (82).

10. A fastening nut according to claim 1, wherein: a screw column buckle groove (70) is arranged on the second screw nut (40).